CN221457753U - Trailer type baby carrier with reversible seat - Google Patents

Abstract

The utility model belongs to the technical field of strollers, and particularly relates to a trailer type stroller with a reversible seat, which comprises a frame main body and an armrest assembly; a seat assembly for carrying an infant; a connection mechanism for removably connecting the seat assembly to the frame body in either a forward or reverse direction; the movable hinge mechanism is used for closing or opening the armrest assembly relative to the frame body so as to enable the armrest assembly and the frame body to form a containing space for bearing goods or form an opening into the containing space on one side of the frame body. The utility model realizes the multi-scene use mode of the baby carrier for carrying babies and objects through the detachable mode of the seat component and the frame main body, realizes the multi-form use mode of the baby carrier through the reversible mounting of the seat component on the frame main body, and has more practicability; the arrangement of the side opening of the frame body can facilitate the ingress and egress of a child, and the child is prevented from climbing or trying other unsafe actions to a certain extent.

Description

Trailer type baby carrier with reversible seat

[ Field of technology ]

The application belongs to the technical field of strollers, and particularly relates to a trailer type strollers with reversible seats.

[ Background Art ]

Most of the child seats on the market are usually designed in a fixed orientation, which makes it impossible for the caregivers to observe the child in time when the seat is facing forward, and the child cannot see the scene in front when the seat is facing backward, which may be inconvenient or impractical in many situations. In addition, most stroller designs that employ a rail-type seat, while providing additional safety in some respects, present other problems. For example, when a child tries to get on or off the vehicle, the design may cause them to climb or try other unsafe actions, and each time the child gets on or off the vehicle, the caretaker needs to hold the child's vehicle to the child's vehicle, and the fixed direction and rail type design is only suitable for carrying the child, and is not suitable for the daily carrying object.

[ utility model ]

In order to solve the problem of fixed orientation of the baby carriage seat in the prior art, the application provides the trailer type baby carriage with the reversible seat, which can meet the requirement of forward or backward installation of the seat.

The application is realized by the following technical scheme:

a trailer type baby carrier with reversible seat comprises

A frame body and a handrail assembly;

at least one seat assembly for supporting an infant;

a connection mechanism for removably connecting the seat assembly to the frame body in either a forward or reverse direction;

The armrest assembly is closed or opened relative to the frame body, so that the armrest assembly and the frame body form a containing space for bearing a child or goods, or an opening for entering the containing space is formed on one side of the frame body.

The trailer type baby carrier with the reversible seat is characterized in that a movable hinge mechanism is arranged between the armrest assembly and the frame body, the movable hinge mechanism comprises a hinge piece, one end of the hinge piece is rotatably connected with the frame body, the other end of the hinge piece is connected with one end of the armrest assembly, and the other end of the armrest assembly is detachably connected with the frame body.

A seat-reversible trailer-type stroller as described above, wherein the frame body comprises at least two oppositely disposed left and right sides, and the armrest assembly is located above the bottom of the accommodating space and spans between the left and right sides;

And/or the number of the groups of groups,

The seat assembly includes a base and/or a backrest; when the seat assembly is installed in the accommodating space towards the armrest assembly, the armrest assembly forms a guardrail for a child to sit on when being closed relative to the frame main body, and forms an opening for the child to enter and exit the accommodating space when being opened relative to the frame main body.

A seat-reversible trailer-type stroller as described above,

The armrest assembly is positioned on the front side or the rear side of the frame main body;

And/or the number of the groups of groups,

A front side or a rear side is formed between the armrest assembly and the frame main body, the front side or the rear side corresponding to the armrest assembly can be switched between a closed state and an open state, and when the armrest assembly is in the open state, feet of a child can extend out of the accommodating space;

And/or the number of the groups of groups,

The front side or the rear side of the frame main body is provided with a pedal.

The trailer type baby carrier with the reversible seat comprises the sliding block which is connected to the seat assembly in a sliding mode, and the clamping interface which is arranged on the frame body and used for clamping the sliding block to connect the seat assembly with the frame body, wherein when the seat assembly is connected to the frame body in the forward direction or the reverse direction, the sliding block corresponds to the clamping interface.

In one type of the trailer-type stroller with the reversible seat, a first elastic member is disposed between the seat assembly and the slider, and/or the connecting mechanism further includes an operating portion exposed on the seat assembly for driving the slider to disengage from the clamping interface.

A seat-reversible trailer-type stroller as described above, the frame body comprising a first frame set, a second frame set disposed symmetrically to the first frame set, and a locking mechanism for holding the first frame set and the second frame set in an extended or folded state;

And/or the number of the groups of groups,

The frame main body comprises a push rod assembly, and the push rod assembly can be switched to a pushing position, a dragging position and a folding position;

And/or the number of the groups of groups,

A pedal part which can be stepped on by a child to enter the accommodating space is arranged between the first frame set and the second frame set.

The trailer type baby carrier with the reversible seat corresponds to the bottom of the accommodating space, and the first frame set and the second frame set are rotatably connected through the locking mechanism;

the first frame group is connected with the second frame group through a dinner plate or a side guardrail corresponding to the top of the accommodating space;

When one end of the dinner plate or the side guard rail is detached from the frame main body, a child can enter and exit the accommodating space or the frame main body is allowed to be folded.

The trailer type baby carrier with the reversible seat comprises a first frame group, a second frame group, a third frame group and a fourth frame group, wherein the first frame group is arranged at the bottom of a containing space, the second frame group is arranged at the top of the containing space, the third frame group is respectively hinged with the first and second frame groups, and the fourth frame group is respectively hinged with the first and second frame groups;

The second frame group comprises a fifth rod connected with the first rod through the locking mechanism, a sixth rod arranged corresponding to the top of the accommodating space, a seventh rod with two ends respectively hinged with the fifth rod and the sixth rod, and an eighth rod with one end hinged with the fifth rod and the sixth rod and one end hinged with the fourth rod.

The trailer type baby carrier with the reversible seat, wherein an opening and a tread space which enter the accommodating space are formed between the fourth rod piece and the eighth rod piece;

And/or the number of the groups of groups,

The fourth rod piece and the eighth rod piece extend to the lower part of the locking mechanism or the accommodating space and form a pedal part.

A seat-reversible trailer-type stroller as described above, the first frame set comprising a first link, both ends of which are respectively hinged with a front-side wheel set and the fourth link extending below the first link, and a second link, one end of which is hinged with the first link and the other end of which is connected with the first link;

And/or the number of the groups of groups,

The second frame group comprises a third connecting rod, one end of the third connecting rod is hinged with the eighth rod extending to the lower part of the fifth rod, the other end of the third connecting rod is connected with the rear wheel group, and two ends of the fourth connecting rod are respectively hinged with the third connecting rod and the fifth rod.

The seat-reversible trailer-type baby carrier comprises a base and a backrest rotatably connected with the base, wherein a locking block capable of moving between a locking position and a locking position is arranged between the base and the backrest;

the backrest is locked in an unfolding position when the lock release block is positioned in the locking position, and can move relative to the base when the lock release block is positioned in the lock release position;

a lock release mechanism is arranged between the seat assembly and the frame main body and comprises a lock release push block movably connected to the base and an abutting piece arranged on the frame main body;

When the abutting piece moves along with folding of the frame main body, the abutting piece enables the lock release pushing block to drive the lock release block to move from the locking position to the lock release position.

A trailer type baby carrier with reversible seat comprises

A foldable frame body and armrest assembly;

At least one seat assembly for supporting an infant, comprising a backrest that is deployable and collapsible relative to the frame body and/or a base connected to the backrest;

a connection mechanism for removably connecting the seat assembly to the frame body in either a forward or reverse direction;

The armrest assembly and the frame main body form a containing space for bearing children or cargoes, or the armrest assembly and one side surface of the frame main body form an opening of the containing space;

And/or the number of the groups of groups,

The seat assembly can be folded along with the frame main body when being in the forward direction or the reverse direction;

wherein, the seat subassembly detachably installs in the accommodation.

The trailer type baby carrier with the reversible seat comprises a sliding block which is connected to the seat assembly in a sliding way, and a clamping interface which is arranged on the frame body and is used for clamping the sliding block in order to connect the seat assembly with the frame body, wherein when the seat assembly is connected to the frame body in the forward direction or the reverse direction, the sliding block corresponds to the clamping interface;

The connecting mechanism further comprises an operation part arranged on the seat assembly and used for driving the sliding block to be separated from the card interface.

The seat-reversible trailer-type baby carrier comprises a frame body, wherein the frame body at least comprises a left side surface and a right side surface which are oppositely arranged, the armrest assembly is positioned on the bottom of the accommodating space and spans between the left side surface and the right side surface;

And/or the number of the groups of groups,

When the seat assembly is installed in the accommodating space towards the armrest assembly, the armrest assembly forms a guardrail for a child to sit on when being closed relative to the frame main body, and forms an opening for the child to enter and exit the accommodating space when being opened relative to the frame main body;

And/or the number of the groups of groups,

The front side or the rear side is formed between the armrest assembly and the frame main body, the front side or the rear side corresponding to the armrest assembly can be switched between a closed state and an open state, and when the armrest assembly is in the open state, the feet of a child can extend out of the accommodating space.

The trailer type baby carrier with the reversible seat is characterized in that the base is rotatably connected with the backrest, a locking block capable of moving between a locking position and a locking releasing position and a positioning structure matched with the locking block are arranged between the base and the backrest, and when the locking block is in the locking position, the backrest is locked at a unfolding position;

The seat assembly includes an unlocking operation member that links the unlocking block and is used for driving the unlocking block to move between a locking position and a unlocking position.

The trailer type baby carrier with the reversible seat is characterized in that a locking block capable of moving between a locking position and a unlocking position is arranged between the base and the backrest, when the locking block is positioned at the locking position, the backrest is locked at an unfolding position relative to the base, and when the locking block is positioned at the unlocking position, the backrest can move relative to the base;

a lock release mechanism is arranged between the seat assembly and the frame main body and comprises a lock release push block movably connected to the base and an abutting piece arranged on the frame main body;

When the abutting piece moves along with the folding of the frame body, the abutting piece enables the lock release pushing block to move so as to drive the lock release block to move from the locking position to the lock release position.

A seat-reversible trailer-type stroller as described above,

The frame main body comprises a foldable first frame group; the first frame group comprises a first four-bar structure formed by a first bar, a fourth bar, a first connecting bar and a second connecting bar, wherein the first bar, the fourth bar, the first connecting bar and the second connecting bar are arranged at the bottom of the accommodating space, the upper section of the second connecting bar is hinged with the first bar, the abutting piece is arranged on the second connecting bar and abuts against the lock release pushing block, and when the frame main body is folded, the lock release pushing block is driven to move by the abutting piece due to folding of the first four-bar structure;

And/or the number of the groups of groups,

The frame main body comprises a foldable second frame group; the second frame group comprises a second four-bar structure formed by a fifth bar, an eighth bar, a third bar and a fourth bar which are arranged at the bottom of the accommodating space, wherein the upper section of the fourth bar is hinged with the fifth bar, the abutting piece is arranged on the fourth bar and abuts against the lock release pushing block, and when the frame main body is folded, the folding of the second four-bar structure enables the abutting piece to drive the lock release pushing block to move.

A seat-reversible trailer-type stroller as described above, the frame body comprising a first foldable frame set and a second foldable frame set, and a locking mechanism for maintaining the first frame set and the second frame set in an extended or folded state;

The seat assembly is selectively mountable within the first frame set and/or the second frame set;

And/or the number of the groups of groups,

A pedal part for a child to pedal to enter the accommodating space is arranged between the first frame set and the second frame set

And/or

The push rod assembly can be switched among a pushing position, a dragging position and a folding position.

Compared with the prior art, the application has the following advantages:

The trailer type baby carrier with the reversible seat can realize the multi-scene use mode of bearing a child or bearing goods through the detachable mode of the seat component and the frame main body, and realize the multi-form baby carrier use mode through the reversible mounting of the seat component on the frame main body, thereby having more practicability; the arrangement of one side surface opening of the frame main body can facilitate the ingress and egress of a child, so that the child is prevented from climbing or trying other unsafe actions to a certain extent, and the child is also conveniently held by a caretaker to the baby carrier, so that the baby carrier has more practical advantages compared with other similar products.

[ Description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a three-dimensional perspective view of an embodiment of the present application;

FIG. 2 is a front view of an embodiment of the present application;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic view of the internal structure of FIG. 3;

FIG. 5 is a partial three-dimensional perspective view of an embodiment of the present application;

FIG. 6 is an exploded view I of the locking mechanism in an embodiment of the application;

FIG. 7 is an exploded view II of the locking mechanism in an embodiment of the application;

FIG. 8 is an exploded view of a bending joint mechanism in accordance with an embodiment of the present application;

FIG. 9 is a second exploded view of the articulation mechanism of the present application;

FIG. 10 is a schematic diagram of a first embodiment of the application;

FIG. 11 is a schematic diagram of a second embodiment of the present application;

FIG. 12 is a schematic diagram of a third embodiment of the application;

FIG. 13 is a schematic diagram of a fourth embodiment of the application;

FIG. 14 is a first folding schematic view of an embodiment of the application;

FIG. 15 is a second folding schematic view of an embodiment of the present application;

FIG. 16 is a third folding schematic in an embodiment of the application;

FIG. 17 is a fourth schematic folding view of an embodiment of the present application;

FIG. 18 is a schematic view of a lock release mechanism according to an embodiment of the present application;

FIG. 19 is a second schematic view of the lock release mechanism according to the embodiment of the present application;

FIG. 20 is a third schematic diagram of a lock release mechanism according to an embodiment of the present application;

FIG. 21 is a schematic view of a structure for use as a trailer in an embodiment of the application;

FIG. 22 is a schematic view of a portion of a coupling mechanism according to an embodiment of the present application;

Fig. 23 is a schematic diagram of a portion of a connection mechanism according to an embodiment of the present application.

[ Detailed description ] of the invention

In order to make the technical scheme and beneficial effects of the technical problem solved by the application more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

Referring to FIGS. 1 to 23, a seat-reversible stroller for a trailer, comprises

A frame body 1 and a armrest assembly 2;

at least one seat assembly 3 for supporting an infant;

a connection mechanism 4 for removably connecting the seat assembly 3 to the frame body 1 in the forward or reverse direction;

The armrest assembly 2 is closed or opened with respect to the frame body 1 such that the armrest assembly 2 forms a receiving space 6 for carrying a child or goods with the frame body 1 or an opening into the receiving space 6 is formed at one side of the frame body 1.

The trailer type baby carrier with the reversible seat can realize the multi-scene use mode of bearing a child or bearing goods through the detachable mode of the seat component and the frame main body, and realize the multi-form baby carrier use mode through the reversible mounting of the seat component on the frame main body, thereby having more practicability; the arrangement of one side surface opening of the frame main body can facilitate the ingress and egress of a child, so that the child is prevented from climbing or trying other unsafe actions to a certain extent, and the child is also conveniently held by a caretaker to the baby carrier, so that the baby carrier has more practical advantages compared with other similar products.

Further, as a preferred embodiment of the present invention, but not limited thereto, the opening and closing of the armrest assembly 2 may be accomplished by the detachment and installation from the frame body 1.

Further, as a preferred embodiment of the present invention, but not limited to, a movable hinge mechanism 5 is provided between the armrest assembly 2 and the frame body 1, the movable hinge mechanism 5 includes a hinge member 51 having one end rotatably connected to the frame body 1 and the other end connected to one end of the armrest assembly 2, and the other end of the armrest assembly 2 is detachably connected to the frame body 1.

In this embodiment, the arrangement of the movable hinge mechanism enables the armrest assembly to be rotatably connected with the frame main body, which means that when the user dismounts one end of the armrest assembly from the frame main body, the other end of the armrest assembly is connected with the frame main body, and the armrest assembly can naturally hang down to adjust the position of the armrest, thereby obtaining more convenient use experience.

Further, as a preferred embodiment of the present invention, but not limited thereto, the frame body 1 includes at least a left side surface and a right side surface which are disposed opposite to each other, and the armrest assembly 2 is located above the bottom of the accommodating space 6 and spans between the left side surface and the right side surface;

And/or the number of the groups of groups,

The seat assembly 3 includes a base 31 and/or a backrest 32; when the seat assembly 3 is installed in the accommodating space 6 towards the armrest assembly 2, the armrest assembly 2 forms a guardrail for a child to sit on when being closed relative to the frame main body 1, and forms an opening for a child to enter and exit the accommodating space 6 when the armrest assembly 2 is opened relative to the frame main body 1.

In this embodiment, the armrest assembly may be positioned in front of/in/behind the frame body, and may be used as a dinner plate when positioned in the middle of the frame body. The movable hinge mechanism on the dinner plate can be a C-shaped buckle.

Further, as a preferred embodiment of the present invention, not limited thereto, the armrest assembly 2 is located at the front side or the rear side of the frame body 1;

And/or the number of the groups of groups,

A front side or a rear side is formed between the armrest assembly 2 and the frame body 1, the front side or the rear side corresponding to the armrest assembly 2 can be switched between a closed state and an open state, and when the armrest assembly is in the open state, feet of a child can extend out of the accommodating space 6;

And/or the number of the groups of groups,

The front side or the rear side of the frame body 1 is provided with a pedal.

In this embodiment, the front side and the rear side may be software, and are switched between a closed state and an open state by a zipper or a clasp; or may be a hard plate that is converted between a closed state and an open state by disassembly or pivoting.

Further, as a preferred embodiment of the present invention, but not limited to, the connection mechanism 4 includes a slider 41 slidably connected to the seat assembly 3, and a locking port 42 provided on the frame body 1 and into which the slider 41 is locked to connect the seat assembly 3 to the frame body 1, wherein the slider 41 corresponds to the locking port 42 when the seat assembly 3 is connected to the frame body 1 in the forward or reverse direction.

In this embodiment, through the design of slider and interface, the seat subassembly can be easily forward or reverse connection to the frame main part, need not complicated instrument or operation flow, has not only simplified the installation and the dismantlement process of seat, has ensured firm and the stability of connection moreover. When the sliding block slides into the clamping interface, the tight fit formed between the sliding block and the clamping interface ensures the tight connection between the seat assembly and the frame main body, and shaking or loosening possibly occurring in the using or moving process is effectively reduced.

Further, as a preferred embodiment of the present solution, but not limited to, the seat assembly 3 is provided with a limiting table 411, the slide block 41 is provided with a limiting groove 7 into which the limiting table 411 is inserted, a first elastic member 412 is disposed between the limiting groove 7 and the limiting table 411, when the slide block 41 is separated from the clamping interface 42, the seat assembly 3 is separated from the frame body 1, and meanwhile, the first elastic member 412 is compressed under force, when the action on the slide block 41 is released, the limiting table 411 moves in a direction away from the limiting groove 7 under the action of the elastic force of the first elastic member 412, and the slide block 41 is clamped into the clamping interface 42 to connect the seat assembly 3 with the frame body 1.

In this embodiment, the first elastic component is the spring, slide block and the interface structure of card that coupling mechanism adopted for the connection between seat subassembly and the frame main part is both firm and convenient dismantlement. When the seat assembly is required to be separated from the frame main body, the sliding block is only required to be pushed to be separated from the clamping interface, at the moment, the first elastic piece is compressed, and when the seat assembly is reconnected, the first elastic piece can generate a rebound effect to help the sliding block to be automatically clamped into the clamping interface, so that the firmness of connection is ensured. The design not only improves the connection efficiency of the seat assembly and the frame main body, but also ensures the stability and safety of connection, and brings great convenience to users.

Further, as a preferred embodiment of the present invention, but not limited to, the present invention includes two connecting mechanisms 4 symmetrically disposed, the connecting mechanisms 4 are disposed in the seat assembly 3, the seat assembly 3 is provided with a sliding groove 8 into which the sliding block 41 is inserted, and the connecting mechanisms 4 further include an operating portion 43 disposed on the sliding block 41 and/or exposed on the upper surface of the seat assembly 3.

In this embodiment, the two symmetrically arranged connection mechanisms not only ensure the stable connection between the seat assembly and the frame body, but also consider the overall aesthetic property and practicality of the seat assembly in design. By arranging the sliding groove for sliding the sliding block in the seat assembly, the moving track of the sliding block can be effectively guided, and the alignment precision of the seat assembly and the frame is enhanced. The operation part exposed on the upper surface of the seat component not only provides a clear and convenient operation point for a user, but also is convenient for the user to directly use the thumb and the index finger to press the sliding block, so that the user can directly dismantle the seat component upwards after pinching the seat component by the two fingers. The design not only improves the reliability and stability of connection, but also gives attention to the overall appearance and use experience of the product, and brings more perfect and comfortable seat experience for users.

Further, as a preferred embodiment of the present invention, not limited thereto, the frame body 1 includes a first frame group 11, a second frame group 12 disposed symmetrically to the first frame group 11, and a locking mechanism 13 for holding the first frame group 11 and the second frame group 12 in an expanded or folded state;

And/or the number of the groups of groups,

The frame body 1 comprises a push rod assembly 500, and the push rod assembly 500 can be switched to a pushing position, a dragging position and a folding position;

And/or the number of the groups of groups,

A pedal portion for a child to tread on to enter the accommodating space 6 is provided between the first frame set 11 and the second frame set 12.

In this embodiment, the design of the first frame group and the second frame group symmetrically disposed thereto enhances the stability and load bearing capacity of the seat, ensuring the firmness and safety of the entire seat structure. Secondly, through setting up the locking mechanical system that is used for keeping expansion or folding for the user can easily expand or fold the frame according to actual demand, thereby realizes convenient storage and the carrying of seat. The design not only enhances the use flexibility and convenience of the seat, but also meets the requirements of users on portability and space efficiency, and provides more comfortable and convenient use experience for the users.

Further, as a preferred embodiment of the present invention, but not limited to, the first frame set 11 and the second frame set 12 are rotatably connected to each other through the locking mechanism 13 corresponding to the bottom of the accommodating space 6;

Corresponding to the top of the accommodating space 6, the first frame set 11 and the second frame set 12 are connected through the dinner plate 300 or a side guard rail;

when the dinner plate 300 or one end of the side guard rail is detached from the frame body 1, a child can enter and exit the accommodating space 6 or allow the frame body 1 to be folded.

In this embodiment, one end of the dinner plate may be pivotally connected to one frame set, and the other end may be detachably connected to the other frame set; or the dinner plate can be detachably arranged between the two frame groups and can be used as a side guard rail; or the left side and the right side of the first frame set 11 corresponding to the second frame set 12 are respectively connected through a rod-shaped side guard bar, one end of the side guard bar can be pivoted to one frame set, the other end of the side guard bar is detachably connected to the other frame set, or both ends of the side guard bar are detachably arranged between the two frame sets, when the frame is unfolded, a dinner plate can be additionally arranged between the left side guard bar and the right side guard bar, and both sides of the dinner plate are buckled with the left side guard bar and the right side guard bar. The side rail may alternatively be considered as a dinner plate body.

Further, as a preferred embodiment of the present invention, but not limited to, the first frame set 11 includes a first rod 111 disposed corresponding to the bottom of the accommodating space 6, a second rod 112 disposed corresponding to the top of the accommodating space 6, a third rod 113 having both ends hinged to the first rod 111 and the second rod 112, respectively, and a fourth rod 114 hinged to the first rod 111 and the second rod 112;

The second frame set 12 includes a fifth rod 121 connected to the first rod 111 through the locking mechanism 13, a sixth rod 122 disposed corresponding to the top of the accommodating space 6, a seventh rod 123 with two ends hinged to the fifth rod 121 and the sixth rod 122, and an eighth rod 124 hinged to the fifth rod 121 and the sixth rod 122, and one end hinged to the fourth rod 114.

In this embodiment, the structural design of the first frame set and the second frame set provides excellent stability and flexibility for the seat system. The first frame group effectively supports and fixes the bottom and the top of the accommodating space 6 through the design of a plurality of articulated rods of the first frame group, so that the whole seat structure is kept stable in the bearing and using processes, and the connection of the first connecting rod and the second connecting rod enhances the bearing capacity and the structural firmness of the frame. In addition, the combination of the eighth rod and the third connecting rod and the design of the fourth connecting rod enhance the connection and stability between the second frame group and the rear wheel group. The whole design structure considers the structural change requirement of the seat when the seat is folded and folded under different application scenes, ensures that the baby carrier can be minimized in size when being folded, and reduces the space occupied by the baby carrier during transportation and storage.

Further, as a preferred embodiment of the present invention, but not limited to, an opening 9 and a tread space 10 are formed between the fourth rod 114 and the eighth rod 124, which enter the accommodating space 6;

And/or the number of the groups of groups,

The fourth rod 114 and the eighth rod 124 extend below the locking mechanism 13 or the accommodating space 6, and form a pedal portion.

In this embodiment, the opening formed between the fourth rod and the eighth rod and entering the accommodating space and the stepping space increase the convenience and versatility of the seat system. The opening provides a convenient path for a child to easily enter and leave the receiving space, avoiding the risk of climbing the stroller, which could be unnecessary. Meanwhile, the pedal space enables the user to obtain enough supporting steps when the user needs to pedal or perform other related operations, so that the use comfort is improved, the maximum functionality and practicability are realized in the limited space, and more convenient and pleasant use experience is brought to the user.

Further, as a preferred embodiment of the present invention, but not limited thereto, the first frame group 11 includes a first link 115, both ends of which are respectively hinged to the front side wheel group 100 and the fourth link 114 extending below the first link 111, and a second link 116, one end of which is hinged to the first link 111 and the other end of which is connected to the first link 115;

And/or the number of the groups of groups,

The second frame unit 12 includes a third link 125 having one end hinged to the eighth link 124 extending below the fifth link 121 and the other end connected to the rear wheel unit 200, and a fourth link 126 having both ends hinged to the third link 125 and the fifth link 121, respectively.

Further, as a preferred embodiment of the present invention, but not limited to, when the locking mechanism 13 is unlocked, the locking mechanism 13 is lifted upwards, the first rod 111 and the fifth rod 121 are folded downwards under the action of gravity, so as to drive the fourth rod 114 and the eighth rod 124 to fold towards the direction approaching the locking mechanism 13, the third rod 113 and the seventh rod 123 are moved towards the direction approaching the fourth rod 114 and the eighth rod 124, respectively, the second rod 112 and the sixth rod 122 are moved towards the direction approaching the first rod 111 and the fifth rod 121, respectively, and the first link 115 and the third link 125 drive the front wheel set 100 and the rear wheel set 200 to approach each other to fold the frame body 1, respectively.

Fig. 14-17 are schematic illustrations of the seat assembly of the present embodiment in a folded configuration with the seat assembly mounted in different orientations.

Further, as a preferred embodiment of the present invention, but not limited to, when the first rod 111 and the fifth rod 121 are unfolded upwards, the fourth rod 114 and the eighth rod 124 are driven to be extended away from the locking mechanism 13, the third rod 113 and the seventh rod 123 are respectively moved away from the fourth rod 114 and the eighth rod 124, the second rod 112 and the sixth rod 122 are respectively moved away from the first rod 111 and the fifth rod 121, and the first link 115 and the third link 125 respectively drive the front wheel set 100 and the rear wheel set 200 to be separated from each other to unfold the frame body 1.

Further, as a preferred embodiment of the present invention, but not limited to, the locking mechanism 13 includes a first connecting member 131 connected to the first rod 111, a second connecting member 132 connected to the fifth rod 121, an outer cover 133 connected to the first connecting member 131, a linkage member 134 disposed between the outer cover 133 and the first connecting member 131, a key 135 passing through the outer cover 133 and connected to the linkage member 134, and a second elastic member 136 disposed between the outer cover 133 and the key 135 and along a moving direction of the key 135 relative to the outer cover 133, a middle shaft cylinder 1331 and a locking member 1332 are disposed on the outer cover 133, a bar-shaped groove 1341 and a top block 1342 are disposed on the linkage member 134, a slope 1311 abutting against the top block 1342 and gradually separating from the first connecting member 131 along a moving direction of the key 135, a groove 1312 disposed around a center of the first connecting member 131, the second connecting member 132 is disposed on the outer cover 133, the middle shaft cylinder 1331 and the locking member 1332 sequentially passes through the bar-shaped groove 1341, the bar-shaped groove 1331 and the bar-shaped groove 1332.

In this embodiment, the second elastic member is a spring, and the provision of the locking mechanism provides an efficient locking and releasing function while ensuring stability and safety. Through the connection of the first connecting piece and the second connecting piece, the locking mechanism can firmly fix the first frame group and the second frame group, and stability of the seat is ensured. The combination of the linkage piece and the key realizes quick and convenient locking/unlocking operation, so that when a user presses the key to unlock, the child car can be easily lifted upwards to unlock so as to fold the child car, and the operability and the use convenience of the seat are enhanced. The structural design of the inclined plane, the arc-shaped groove and the limiting hole is combined with the strip-shaped groove and the top block on the linkage piece, so that a highly accurate locking and releasing mechanism is realized. When the key is pushed, the second elastic member provides necessary feedback and force to ensure smooth locking and releasing operations.

Further, as a preferred embodiment of the present invention, but not limited to, the key 135 drives the linkage 134 to move upward relative to the outer cover 133, the top block 1342 slides upward along the inclined plane 1311, so that the outer cover 133 moves away from the second connecting piece 132, and the locking piece 1332 is further moved out of the limiting hole 1321 to unlock the first connecting piece 131 and the second connecting piece 132, and meanwhile, the second elastic piece 136 is compressed under force, the key 135 drives the linkage 134 to move downward relative to the outer cover 133 under the elastic force of the second elastic piece 136, and the top block 1342 slides downward along the inclined plane 1311, so that the outer cover 133 moves toward the second connecting piece 132, and the locking piece 1332 penetrates into the limiting hole 1321 to lock the first connecting piece 131 and the second connecting piece 132.

Further, as a preferred embodiment of the present solution, but not limiting, two of said seat assemblies 3 are included.

In the first embodiment, two seat assemblies may be installed in opposite directions to each other;

In the second embodiment, both seat assemblies may be mounted forward;

In the third embodiment, two seat assemblies may be mounted opposite each other;

In the fourth embodiment, both seat assemblies may be installed rearward.

Wherein the seat assembly 3 comprises a base 31 and/or a backrest 32.

The seat assembly 3 comprises a backrest 32, the backrest 32 is detachably connected with the frame body 1 through the connecting mechanism 4, when a child sits on the bottom of the frame body 1 or the accommodating space 6, the backrest 32 can support the back of the child and can be matched with the child to sit forwards or backwards to change the backrest position, namely, the seat assembly 3 is installed forwards or backwards; the seat assembly 3 may include a base 31 connected to the backrest 32, the base 31 serving as a connecting seat, and the slider 41 being selectively provided to the base 31 or the backrest 32; the base 31 may also be a seat plate coupled to the backrest 32 for seating a child.

Another variation of the seat assembly 3 includes a base 31, the base 31 is detachably connected to the frame body 1 through the connecting mechanism 4, and can support a child when the child sits on the bottom of the frame body 1 or the accommodating space 6, and can cooperate with the child to sit forward or backward to change the direction of the base, i.e. the seat assembly 3 is installed forward or backward; wherein the base 31 comprises a front section and a rear section, the front section may be provided with an ergonomic shape to support the buttocks and thighs of a child, or the rear section may have an integrally formed backrest or be connected to the backrest 32.

Further, as a preferred embodiment of the present invention, but not limited to, the seat assembly 3 includes a base 31 and a backrest 32 rotatably connected to the base 31, a lock release block 332 movable between a locking position and a lock release position is provided between the base 31 and the backrest 32, the lock release block 331 is provided with an abutment portion 3311, a trigger portion 3317, a driving portion 3318 for pushing the lock release block 332 and having a slant protrusion, and a locking groove 3312 for sliding the lock release block 332 in, an abutment member 3313 abutting against the trigger portion 3317 is provided at a hinge joint between the fourth link 126 and the fifth link 121, a third elastic member 3314 is provided between the lock release block 332 and the backrest 32, a fourth elastic member 3315 is provided at a side of the abutment portion 3311 close to the backrest 32, and a fifth elastic member 3316 is provided at a side of the abutment portion 3311 remote from the backrest 32.

In this embodiment, when the vehicle frame body is unfolded to a specific angle, the backrest of the seat is pushed by the armrest assembly to be unfolded, so as to avoid the influence of the unfolding of the seat to the locking angle, the abutting piece on the vehicle frame body pushes the release lock push block to enable the backrest to be kept in a release state, and further the vehicle can be unfolded smoothly. The seat assembly provides an efficient, stable locking and release function that enhances the safety and convenience of use of the seat. The design of the unlocking mechanism not only simplifies the operation flow of the seat, but also ensures that the locking effect can be obtained stably, safely and reliably under various use scenes, and provides a comfortable, safe and convenient seat use experience for users.

Further, as a preferred embodiment of the present invention, but not limited to, when the frame body 1 is unfolded, the fourth link 126 rotates relative to the fifth link 121, the abutting piece 3313 pushes the lock release pushing piece 331 to move away from the backrest 32, the lock release piece 332 is pushed by the driving part 3318 with the inclined surface protrusion to slide out of the locking groove 3312 so as to unlock the base 31 and the backrest 32, and at the same time, the third elastic piece 3314 and the fifth elastic piece 3316 are compressed by force, the lock release pushing piece 331 moves towards the direction approaching the backrest 32 under the elastic force of the fifth elastic piece 3316, and the lock release piece 332 slides into the locking groove 3312 under the elastic force of the third elastic piece 3314 so as to keep the base 31 and the backrest 32 locked.

Further, as a preferred embodiment of the present invention, but not limited to, the seat assembly 3 includes a base 31 and a backrest 32 rotatably connected to the base 31, and a locking block 332 movable between a locking position and a locking position is provided between the base 31 and the backrest 32;

The backrest 32 is locked in the extended position when the release block 332 is in the locked position, and the backrest 32 is movable relative to the base 31 when the release block 332 is in the release position;

A lock release mechanism 33 is arranged between the seat assembly 3 and the frame body 1, and the lock release mechanism 33 comprises a lock release push block 331 movably connected to the base 31 and an abutting piece 3313 arranged on the frame body 1;

When the abutting piece 3313 moves with the folding of the frame body 1, the abutting piece 3313 will cause the lock release pushing block 331 to drive the lock release block 332 to move from the lock position to the lock release position.

Further, as a preferred embodiment of the present invention, but not limited thereto, a dinner plate 300 is detachably connected between the second rod 112 and the fourth rod 114.

In this embodiment, the removable design of the dinner plate increases the versatility and convenience of use for the seat assembly. By being detachably connected between the second bar and the fourth bar, the user can easily mount the dinner plate on the seat when needed, providing a convenient table for dining or placing articles. The design characteristics enable the seat to not only meet basic sitting and lying functions, but also provide a practical dining space for users. The use value and the practicability of the seat are enhanced. In addition, when the user does not need to use the dinner plate, the dinner plate can be detached easily, space is saved, the dinner plate is convenient to clean, and maintenance and management of the chair are simpler and more efficient. Overall, this design provides a practical and convenient seat use experience for the user, enhancing the functionality of the seat and the satisfaction of the user.

Further, as a preferred embodiment of the present invention, but not limited thereto, the push rod assembly 500 further includes a push rod assembly 500, the push rod assembly 500 includes a bending joint mechanism 510, a lower connection rod 520 hinged to the frame body 1, an upper connection rod 530 hinged to the lower connection rod 520 through the bending joint mechanism 510, the bending joint mechanism 510 includes an upper joint member 511 connected to the upper connection rod 530, a lower joint member 512 connected to the lower connection rod 520, a latch member 513 provided between the upper joint member 511 and the lower joint member 512, a button 514 passing through the upper joint member 511 and abutting the latch member 513, and a sixth elastic member 515 provided between the lower joint member 512 and the latch member 513, a latch 5111 and a first positioning tooth 5112 are provided on the upper joint member 511, a latch groove 5131 and a second positioning tooth 5132 are provided on the latch member 513, the lower joint member 512 is provided with a third positioning tooth 5121, the locking groove 5131 is used for inserting the clamping block 5111 to limit the rotation angle of the upper joint member 511 relative to the lower joint member 512, the second positioning tooth 5132 is respectively meshed with the first positioning tooth 5112 and the third positioning tooth 5121 to keep the upper joint member 511 and the lower joint member 512 positioned, the button 514 drives the locking member 513 to move towards the direction close to the lower joint member 512, the second positioning tooth 5132 is separated from the first positioning tooth 5112 to unlock the upper joint member 511 and the lower joint member 512, the upper connecting rod 530 is rotated downwards, the clamping block 5111 is rotated along the locking groove 5131 to enable the upper connecting rod 530 and the lower connecting rod 520 to be folded, simultaneously the sixth elastic member 515 is compressed by force to rotate the upper connecting rod 530 upwards, the locking member 513 is moved away from the lower joint member 512 by the elastic force of the sixth elastic member 515, and the second positioning teeth 5132 are engaged with the first positioning teeth 5112 to maintain the locking of the upper joint member 511 and the lower joint member 512.

A trailer type baby carrier with reversible seat comprises

The foldable frame body 1 comprises a push rod assembly 500, wherein the push rod assembly 500 can be switched to a pushing position, a dragging position and a folding position;

A handrail assembly 2;

at least one seat assembly 3 for supporting an infant, comprising a backrest 32 which can be unfolded and folded with respect to the frame body 1 and/or a base 31 connected to the backrest;

a connection mechanism 4 for removably connecting the seat assembly 3 to the frame body 1 in the forward or reverse direction;

The armrest assembly 2 and the frame body 1 form a containing space 6 for bearing children or cargoes, or the armrest assembly 2 and one side surface of the frame body 1 form an opening of the containing space 6;

And/or the number of the groups of groups,

The seat assembly 3 can be folded along with the frame body 1 when being in the forward direction or the reverse direction;

Wherein the seat assembly 3 is detachably mounted in the accommodating space 6.

Further, as a preferred embodiment of the present invention, but not limited to, the connection mechanism 4 includes a slider 41 slidably connected to the seat assembly 3, and a clip port 42 provided on the frame body 1 and into which the slider 41 is clipped to connect the seat assembly 3 to the frame body 1, wherein the slider 41 corresponds to the clip port 42 when the seat assembly 3 is connected to the frame body 1 in the forward or reverse direction;

The connecting mechanism 4 further comprises an operating part 43 exposed on the seat assembly 3 for driving the sliding block 41 to be separated from the card interface 42.

In this embodiment, the backrest 32 is detachably connected to the frame body 1 through the base 31, when a child sits on the frame body 1 or the bottom of the accommodating space 6, the backrest 31 serves as a connecting seat for supporting the back of the child, and the backrest is changed in position in cooperation with the child sitting forward or backward; further, the base 31 is a seat board, and is connected to the backrest 32 for a child to sit on.

Further, as a preferred embodiment of the present invention, but not limited thereto, the frame body 1 includes at least a left side surface and a right side surface which are disposed opposite to each other, and the armrest assembly 2 is located above the bottom of the accommodating space 6 and spans between the left side surface and the right side surface;

And/or the number of the groups of groups,

When the seat assembly 3 is installed in the accommodating space 6 towards the armrest assembly 2, the armrest assembly 2 forms a guardrail for a child to sit when being closed relative to the frame main body 1, and an opening for a child to enter and exit the accommodating space 6 is formed when the armrest assembly 2 is opened relative to the frame main body 1;

And/or the number of the groups of groups,

The front side or the rear side is formed between the armrest assembly 2 and the frame body 1, the front side or the rear side corresponding to the armrest assembly can be switched between a closed state and an open state, and when the armrest assembly is in the open state, the feet of a child can extend out of the accommodating space 6.

Further, as a preferred embodiment of the present invention, but not limited to, the base 31 is rotatably connected to the backrest 32, and a locking block 332 that can be moved between a locking position and a positioning structure that cooperates with the locking block 332 are provided between the base 31 and the backrest 32, and when the locking block 332 is in the locking position, the backrest 32 is locked in a deployed position;

the seat assembly 3 includes an unlocking operation member 600 that is linked to the unlocking block 332 and is used to drive the unlocking block 332 to move between a locking position and a unlocking position.

Further, as a preferred embodiment of the present invention, but not limited to, a lock release block 332 that is movable between a locking position and a lock release position is provided between the base 31 and the backrest 32, when the lock release block 332 is in the locking position, the backrest 32 is locked in an extended position with respect to the base 31, and when the lock release block 332 is in the lock release position, the backrest 32 is movable with respect to the base 31;

A lock release mechanism 33 is arranged between the seat assembly 3 and the frame body 1, and the lock release mechanism 33 comprises a lock release push block 331 movably connected to the base 31 and an abutting piece 3313 arranged on the frame body 1;

When the abutment 3313 moves with the folding of the frame body 1, the abutment 3313 moves the lock release pushing block 331 to drive the lock release block 332 to move from the locking position to the lock release position.

Further, as a preferred embodiment of the present solution, not limiting,

The frame body 1 comprises a foldable first frame set 11; the first frame set 11 includes a first four-bar structure composed of a first bar 111, a fourth bar 114, a first link 115, and a second link 116 disposed at the bottom of the accommodating space 6, wherein the upper section of the second link 116 is hinged to the first bar 111, the abutment 3313 is disposed on the second link 116 and abuts against the lock release push block 331, and when the frame body 1 is folded, the folding of the first four-bar structure drives the abutment 3313 to drive the lock release push block 331 to move;

And/or the number of the groups of groups,

The frame body 1 comprises a foldable second frame set 12; the second frame set 12 includes a second four-bar structure composed of a fifth bar 121, an eighth bar 124, a third bar 125, and a fourth bar 126 disposed at the bottom of the accommodating space 6, wherein the upper section of the fourth bar 126 is hinged to the fifth bar 121, the abutting part 3313 is disposed on the fourth bar 126 and abuts against the lock release push block 331, and when the frame body 1 is folded, the folding of the second four-bar structure drives the abutting part 3313 to move the lock release push block 331.

Further, as a preferred embodiment of the present embodiment, not by way of limitation, the frame body 1 includes a foldable first frame group 11 and a foldable second frame group 12, and a locking mechanism 13 for holding the first frame group 11 and the second frame group 12 in an expanded or folded state;

The seat assembly 3 is selectively mounted within the first frame set 11 and/or the second frame set 12;

And/or the number of the groups of groups,

A pedal portion is provided between the first frame set 11 and the second frame set 12 for a child to tread to enter the accommodating space 6.

The working principle of this embodiment is as follows:

the application relates to a trailer type baby carrier with a reversible seat,

When the seat assembly is detached, the seat assembly can be used for carrying cargoes; when the seat components are installed, the seat components can be used for bearing a child and can be used for placing two seat components, the two seat components can be installed in a common forward direction, or in a common reverse direction, or in a reverse direction, and when the armrest components are opened relative to the frame main body, an opening for enabling the child to enter and exit the accommodating space is formed;

The seat is installed forward or backward, the seat can be folded along with the frame, the left side and the right side corresponding to the first frame group and the second frame group are respectively connected through a rod-shaped side guardrail, one end of the side guardrail can be pivoted to one frame group, the other end of the side guardrail is detachably connected to the other frame group, or both ends of the side guardrail are detachably installed between the two frame groups, when the frame is unfolded, a dinner plate can be additionally installed between the left side guardrail and the right side guardrail, both sides of the dinner plate are buckled with the left side guardrail and the right side guardrail, and the side guardrail can be regarded as a dinner plate body.

The embodiments provided above in connection with the specific disclosure are not intended to limit the practice of the application to those descriptions. The present application should be considered as the protection scope of the present application, if the structure of the method is similar to that of the present application, or if several technical deductions or substitutions are made on the premise of the present application.

Claims (19)

1. A seat-reversible, trailer-type stroller comprising

A frame body (1) and an armrest assembly (2);

At least one seat assembly (3) for supporting an infant;

A connection mechanism (4) for removably connecting the seat assembly (3) to the frame body (1) in a forward or reverse direction;

The armrest assembly (2) is closed or opened relative to the frame body (1) so that the armrest assembly (2) and the frame body (1) form a containing space (6) for bearing a child or goods, or an opening which enters the containing space (6) is formed on one side of the frame body (1).

2. A seat-reversible pushchair according to claim 1, wherein a movable hinge mechanism (5) is provided between the armrest assembly (2) and the frame body (1), the movable hinge mechanism (5) comprising a hinge (51) having one end rotatably connected to the frame body (1) and the other end connected to one end of the armrest assembly (2), the other end of the armrest assembly (2) being detachably connected to the frame body (1).

3. A seat-reversible pushchair according to claim 1, wherein said frame body (1) comprises at least a left side and a right side arranged opposite each other, said armrest assembly (2) being located above the bottom of said receiving space (6) and spanning between said left side and said right side;

And/or the number of the groups of groups,

The seat assembly (3) comprises a base (31) and/or a backrest (32); when the seat assembly (3) is arranged in the accommodating space (6) towards the armrest assembly (2), the armrest assembly (2) forms a guardrail when being closed relative to the frame main body (1), and when the armrest assembly (2) is opened relative to the frame main body (1), an opening for a child to enter and exit the accommodating space (6) is formed.

4. A seat-reversible stroller as defined in claim 1, wherein,

The armrest assembly (2) is positioned at the front side or the rear side of the frame main body (1);

And/or the number of the groups of groups,

A front side or a rear side is formed between the armrest assembly (2) and the frame main body (1), the front side or the rear side corresponding to the armrest assembly (2) can be switched between a closed state and an open state, and when the armrest assembly is in the open state, feet of a child can extend out of the accommodating space (6);

And/or the number of the groups of groups,

The front side or the rear side of the frame main body (1) is provided with a pedal.

5. A seat-reversible pushchair according to claim 1, wherein said connection means (4) comprise a slider (41) slidably connected to said seat assembly (3), and a snap-in interface (42) provided on said frame body (1) for said slider (41) to snap into to connect said seat assembly (3) to said frame body (1), said slider (41) corresponding to said snap-in interface (42) when said seat assembly (3) is connected to said frame body (1) in either the forward or reverse direction.

6. A seat-reversible pushchair according to claim 5, wherein a first elastic member (412) is provided between the seat assembly (3) and the slide (41), and/or wherein the connection mechanism (4) further comprises an operating portion (43) provided on the seat assembly (3) for driving the slide (41) out of the card interface (42).

7. A seat-reversible pushchair according to claim 1, wherein said frame body (1) comprises a first frame set (11), a second frame set (12) arranged symmetrically to said first frame set (11), and a locking mechanism (13) for holding said first frame set (11) and said second frame set (12) unfolded or folded;

And/or the number of the groups of groups,

The frame main body (1) comprises a push rod assembly (500), and the push rod assembly (500) can be switched to a pushing position, a dragging position and a folding position;

And/or the number of the groups of groups,

A pedal part which can be stepped on by a child to enter the accommodating space (6) is arranged between the first frame set (11) and the second frame set (12).

8. A seat-reversible pushchair according to claim 7, wherein said first frame set (11) and said second frame set (12) are rotatably connected by means of said locking mechanism (13) in correspondence of the bottom of said housing space (6);

The first frame group (11) is connected with the second frame group (12) through a dinner plate (300) or a side guardrail corresponding to the top of the accommodating space (6);

When the dinner plate (300) or one end of the side guard rail is detached from the frame main body (1), a child can enter and exit the accommodating space (6) or the frame main body (1) is allowed to be folded.

9. A seat-reversible pushchair according to claim 7, wherein said first frame group (11) comprises a first bar (111) arranged in correspondence of the bottom of said housing space (6), a second bar (112) arranged in correspondence of the top of said housing space (6), a third bar (113) hinged at both ends to said first bar (111) and to said second bar (112), respectively, and a fourth bar (114) hinged to said first bar (111) and to said second bar (112);

the second frame group (12) comprises a fifth rod (121) connected with the first rod (111) through the locking mechanism (13), a sixth rod (122) arranged at the top of the accommodating space (6), a seventh rod (123) with two ends respectively hinged with the fifth rod (121) and the sixth rod (122), and an eighth rod (124) hinged with the fifth rod (121) and the sixth rod (122) and with one end hinged with the fourth rod (114).

10. A seat-reversible pushchair according to claim 9, wherein an opening (9) into the receiving space (6) and a tread space (10) are formed between the fourth bar (114) and the eighth bar (124);

And/or the number of the groups of groups,

The fourth rod (114) and the eighth rod (124) extend to the lower part of the locking mechanism (13) or the accommodating space (6) and form a pedal part.

11. A seat-reversible pushchair according to claim 9, wherein said first frame group (11) comprises a first link (115) hinged at both ends to the front wheel group (100) and to said fourth bar (114) extending under said first bar (111), respectively, and a second link (116) hinged at one end to said first bar (111) and connected at the other end to said first link (115);

And/or the number of the groups of groups,

The second frame group (12) comprises a third connecting rod (125) with one end hinged with the eighth rod (124) extending to the lower part of the fifth rod (121) and the other end connected with the rear side wheel group (200), and a fourth connecting rod (126) with two ends hinged with the third connecting rod (125) and the fifth rod (121) respectively.

12. A seat-reversible pushchair according to claim 1, 7, 9 or 11, wherein said seat assembly (3) comprises a base (31) and a backrest (32) rotatably connected to said base (31), said base (31) and backrest (32) being provided with a release block (332) movable between a locking position and a release position;

The backrest (32) is locked in a deployed position when the release block (332) is in the locked position, the backrest (32) being movable relative to the base (31) when the release block (332) is in the release position;

A lock release mechanism (33) is arranged between the seat assembly (3) and the frame main body (1), and the lock release mechanism (33) comprises a lock release push block (331) movably connected to the base (31) and an abutting piece (3313) arranged on the frame main body (1);

When the abutting piece (3313) moves along with the folding of the frame body (1), the abutting piece (3313) enables the lock release pushing block (331) to drive the lock release block (332) to move from the locking position to the lock release position.

13. A seat-reversible, trailer-type stroller comprising

A foldable frame main body (1) and an armrest component (2);

At least one seat assembly (3) for supporting an infant, comprising a backrest (32) which can be unfolded and folded with respect to the frame body (1) and/or a base (31) connected to the backrest;

A connection mechanism (4) for removably connecting the seat assembly (3) to the frame body (1) in a forward or reverse direction;

The frame main body (1) comprises a push rod assembly (500), and the push rod assembly (500) can be switched to a pushing position, a dragging position and a folding position;

The armrest assembly (2) and the frame main body (1) form a containing space (6) for bearing children or cargoes, or the armrest assembly (2) and one side surface of the frame main body (1) form an opening of the containing space (6);

And/or the number of the groups of groups,

The seat component (3) can be folded along with the frame main body (1) when being in the forward direction or the reverse direction;

Wherein, the seat component (3) is detachably arranged in the accommodating space (6).

14. A seat-reversible pushchair according to claim 13, wherein said connection means (4) comprises a slider (41) slidingly connected to said seat assembly (3), and a snap-in interface (42) provided on said frame body (1) for said slider (41) to snap in to connect said seat assembly (3) to said frame body (1), said slider (41) corresponding to said snap-in interface (42) when said seat assembly (3) is connected to said frame body (1) in a forward or reverse direction;

the connecting mechanism (4) further comprises an operation part (43) arranged on the seat assembly (3) for driving the sliding block (41) to be separated from the clamping interface (42).

15. A seat-reversible pushchair according to claim 13, wherein said frame body (1) comprises at least a left side and a right side arranged opposite each other, said armrest assembly (2) being located above the bottom of said receiving space (6) and spanning between said left and right sides;

And/or the number of the groups of groups,

When the seat assembly (3) is installed in the accommodating space (6) towards the armrest assembly (2), the armrest assembly (2) forms a guardrail for a child to sit when being closed relative to the frame main body (1), and an opening for the child to enter and exit the accommodating space (6) is formed when the armrest assembly (2) is opened relative to the frame main body (1);

And/or the number of the groups of groups,

The front side or the rear side is formed between the armrest assembly (2) and the frame main body (1), the front side or the rear side corresponding to the armrest assembly can be switched between a closed state and an open state, and when the armrest assembly is in the open state, feet of a child can extend out of the accommodating space (6).

16. A seat-reversible pushchair according to claim 13, wherein the base (31) is rotatably connected to the backrest (32), and wherein a release catch (332) movable between a locking position and a release position and a positioning structure cooperating with the release catch (332) are provided between the base (31) and the backrest (32), the backrest (32) locking in the extended position when the release catch (332) is in the locking position;

The seat assembly (3) comprises an unlocking operation member (600) which is used for linking the unlocking block (332) and driving the unlocking block (332) to move between a locking position and a unlocking position.

17. A seat-reversible pushchair according to claim 13, wherein a release catch (332) is arranged between the base (31) and the backrest (32) and is movable between a locking position and a release position, the backrest (32) being locked in an extended position relative to the base (31) when the release catch (332) is in the locking position and the backrest (32) being movable relative to the base (31) when the release catch (332) is in the release position;

A lock release mechanism (33) is arranged between the seat assembly (3) and the frame main body (1), and the lock release mechanism (33) comprises a lock release push block (331) movably connected to the base (31) and an abutting piece (3313) arranged on the frame main body (1);

When the abutting piece (3313) moves along with the folding of the frame body (1), the abutting piece (3313) moves the lock release pushing block (331) to drive the lock release block (332) to move from the locking position to the lock release position.

18. A seat-reversible stroller according to claim 17, characterized in that,

The frame main body (1) comprises a foldable first frame group (11); the first frame set (11) comprises a first four-bar structure formed by a first bar (111), a fourth bar (114), a first connecting bar (115) and a second connecting bar (116) which are arranged at the bottom of the accommodating space (6), wherein the upper section of the second connecting bar (116) is hinged with the first bar (111), the abutting piece (3313) is arranged on the second connecting bar (116) and abuts against the lock release pushing block (331), and when the frame body (1) is folded, the abutting piece (3313) drives the lock release pushing block (331) to move by folding the first four-bar structure;

And/or the number of the groups of groups,

The frame body (1) comprises a foldable second frame group (12); the second frame set (12) comprises a second four-bar structure formed by a fifth bar (121), an eighth bar (124), a third bar (125) and a fourth bar (126) which are arranged at the bottom of the accommodating space (6), wherein the upper section of the fourth bar (126) is hinged with the fifth bar (121), the abutting piece (3313) is arranged on the fourth bar (126) and abuts against the lock release pushing block (331), and when the frame body (1) is folded, the second four-bar structure is folded to enable the abutting piece (3313) to drive the lock release pushing block (331) to move.

19. A seat-reversible pushchair according to claim 13, wherein said frame body (1) comprises a first foldable frame set (11) and a second foldable frame set (12), and a locking mechanism (13) for holding said first frame set (11) and said second frame set (12) unfolded or folded;

-said seat assembly (3) being optionally mounted in said first frame set (11) and/or in said second frame set (12);

And/or the number of the groups of groups,

A pedal part which can be stepped on by a child to enter the accommodating space (6) is arranged between the first frame group (11) and the second frame group (12);

And/or;

the push rod assembly (500) is switchable between a pushing position, a pulling position and a folding position.