CN114763172B

CN114763172B - Automatic folding baby stroller

Info

Publication number: CN114763172B
Application number: CN202110049754.6A
Authority: CN
Inventors: 赵金龙
Original assignee: Ch Baby Co ltd
Current assignee: Ch Baby Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2025-09-16
Anticipated expiration: 2041-01-14
Also published as: CN114763172A

Abstract

The application discloses an automatic folding baby stroller, which comprises a frame and a seat, wherein the seat is detachably arranged on the frame, the frame comprises two opposite side frames, each side frame comprises a front foot rod and a rear foot rod which are mutually hinged, an upper pushing handle rod and a lower pushing handle rod which are mutually hinged, the lower pushing handle rod is also hinged to the rear foot rod, a side rod is hinged between the upper pushing handle rod and the rear foot rod, the upper pushing handle rod, the side rod, the rear foot rod and the lower pushing handle rod form a first connecting rod mechanism capable of being switched between a folding state and an unfolding state, the seat comprises a seat plate and a backrest plate hinged to the seat plate, the backrest plate is provided with a folding state and a riding state, and the self gravity of the seat in the folding state can drive the first connecting rod mechanism releasing a lock to enter the folding state and keep the frame to stand. According to the technical scheme disclosed by the application, the frame is automatically folded through optimizing the relation of the frame rod pieces, and can be kept in a standing state after the folding action is finished, so that the user experience is good.

Description

Automatic folding baby stroller

Technical Field

The application relates to the field of children supplies, in particular to an automatic folding child cart.

Background

With the wide use of the child barrow, the functional requirements of people on the child barrow are also increasing. The baby stroller is not only expected to ensure that a baby can safely sit in the riding process, but also expected to ensure that the baby can sit comfortably and comfortably, and is more convenient to operate and use.

For example, chinese patent publication No. CN109720395A discloses a frame of a stroller for one-button automatic folding, which includes a front seat bar rotatably connected to a front leg group in front of a seat group, and a rear seat bar rotatably connected to a rear leg group in rear of the seat group, and a second elastic member is connected between the front seat bar and the rear seat bar.

Similar to the technical scheme, the prior art solves the problem of automatic folding, but the vehicle body can topple forwards or backwards in the folding process, so that automatic standing cannot be realized, and the cloth cover is easy to be stained.

Disclosure of Invention

In order to solve the technical problems, the application discloses an automatic folding child stroller, which comprises a frame and a seat detachably arranged on the frame, wherein the frame comprises two opposite side frames, each side frame comprises a front foot rod and a rear foot rod which are mutually hinged, an upper pushing hand rod and a lower pushing hand rod which are mutually hinged, the lower pushing hand rod is also hinged to the rear foot rod, a side rod is hinged between the upper pushing hand rod and the rear foot rod, and the upper pushing hand rod, the side rod, the rear foot rod and the lower pushing hand rod form a first connecting rod mechanism capable of being switched between a folding state and an unfolding state, and the first connecting rod mechanism is provided with a first locking mechanism;

The seat comprises a seat board and a backrest board hinged to the seat board, wherein the backrest board is provided with a folding state and a relative riding state, the folding state is rotated to a preset angle relative to the seat board, the self gravity of the seat in the folding state can drive the first connecting rod mechanism of the lock to enter the folding state and keep the frame to stand, the first connecting rod mechanism enters the folding state, and the front foot rod and the rear foot rod are mutually close to realize the standing of the frame.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, each of the side frames includes:

The front foot rod and the rear foot rod are hinged with each other at the top ends, and the front roller and the rear roller are respectively arranged at the bottom ends of the front foot rod and the rear foot rod;

The middle part of the pushing-down hand lever is hinged with the middle part of the rear foot lever, and the bottom of the pushing-down hand lever extends to the front foot lever beyond the rear foot lever;

The two ends of the side rod are respectively hinged with the push-up hand rod and the rear foot rod;

The two ends of the linkage rod are respectively hinged with the bottom of the pushing-down hand rod and the middle part of the front foot rod;

the rear foot rod, the front foot rod, the pushing-down hand rod and the linkage rod form a second link mechanism.

Optionally, the front part of the base is hinged with the front foot rod, the rear part of the base is hinged with the lower push rod, and the seat board is rotatably connected with the base, so that the seat has two orientations.

Optionally, the seat has a forward direction with a seating space facing away from the frame and a reverse direction facing toward the frame, and in the unfolded state, the center of gravity of the seat in the forward direction is close to the hinge between the base and the lower push rod.

Optionally, in the unfolded state, the hinge parts between the base and the lower pushing handle bar and the hinge parts between the rear foot bar and the lower pushing handle bar are arranged in a staggered manner in the gravity direction.

Optionally, the base is hinged to the front foot rod through a swinging rod, and when the side frame enters the folded state from the unfolded state, the height of the hinged base and the swinging rod in the gravity direction is basically kept unchanged.

Optionally, the first locking mechanism is used for keeping the corresponding side frame in an unfolded state, the side bar of each side frame is abutted against the rear foot bar in a folded state, and a second locking mechanism matched with the side bar is arranged on one side frame or the rear foot bar of each side frame and used for keeping the corresponding side frame in the folded state.

Optionally, the second locking mechanism comprises a lock tongue and a lock catch which are matched with each other, wherein guide structures which are matched with each other are arranged on the lock tongue and the lock catch, when the side frame of the vehicle enters a folding state, the side rod and the rear foot rod are close to each other, and the lock tongue and the lock catch are locked with each other through the guide structures.

Optionally, in the folded state, each side frame is set as follows:

The side bars and the front foot bar are respectively abutted against the rear foot bar from two sides;

The push-up hand bar, the side bars, the rear foot bar and the front foot bar are sequentially abutted;

The push-down hand bar, the side bars and the front foot bar are respectively attached to the rear foot bar from three directions.

Optionally, a folding roller is arranged at the top end of the pushing down hand lever, and in a folded state, the folding roller and the front roller are respectively positioned at two sides of the rear roller, and the rear roller and the front roller are used for standing or the rear roller and the folding roller are used for standing.

Optionally, the front roller is a universal wheel, and in the folded state, the center of gravity of the seat is located at one side of the rear roller facing the folding roller.

Optionally, the seat includes folding support and installs the seat cover on folding support, folding support includes two seat side frames of symmetrical arrangement, and each seat side frame includes:

A seat plate which is matched with the base;

The lower end of the front seat rod is hinged with the front side of the seat plate;

the lower end of the squatting rod is hinged with the rear side of the seat plate;

One end of the first connecting rod is hinged with the middle part of the front sitting rod, and the other end of the first connecting rod is hinged with the upper end of the rear sitting rod;

the lower end of the handle rod is hinged with the upper end of the front seat rod;

One end of the second connecting rod is hinged with the upper end of the squat rod, and the other end of the second connecting rod is hinged with the lower end of the handle rod;

the bottom of the backboard is hinged with the rear side of the seat board;

The seat board, the front seat bar, the first connecting rod and the rear seat bar form a third connecting rod mechanism capable of deforming along with the folding bracket, and the front seat bar, the handle bar, the first connecting rod and the second connecting rod form a fourth connecting rod mechanism capable of deforming along with the folding bracket.

According to the technical scheme disclosed by the application, the frame is automatically folded through optimizing the relation of the frame rod pieces, and can be kept in a standing state after the folding action is finished, so that the user experience is good.

Specific advantageous technical effects will be further explained in the detailed description in connection with specific structures or steps.

Drawings

FIGS. 1 a-1 b are schematic views illustrating different states of a stroller according to an embodiment;

FIGS. 2 a-2 d are schematic views illustrating different states of a child car seat according to another embodiment;

fig. 3a to 3b are schematic views of the folding process of the stroller in fig. 2a to 2d (the backboard is omitted);

fig. 4a to 4c are schematic views of the folding state of the stroller in fig. 2a to 2d (the backboard is omitted);

fig. 5a and 5b are schematic views of different states of the seat according to an embodiment (the backboard is omitted).

Reference numerals in the drawings are described as follows:

1. The bicycle comprises a bicycle frame, a bicycle side frame, a 111, an upper pushing hand lever, a 112, a lower pushing hand lever, 1121, folding rollers, 113, a side lever, 114, a rear foot lever, 1141, a rear roller, 115, a front foot lever, 1151, a front roller, 116, a base, 117, a linkage lever, 118, a swinging lever, 12, a second locking mechanism, 121, a lock tongue, 122 and a lock catch;

2. The seat comprises a seat, 21, a seat plate, 22, a folding bracket, 221, a seat side frame, 222, a front seat rod, 2221, a lower joint seat, 223, a rear seat rod, 224, a first connecting rod, 225, a handle rod, 2251, an extension part, 2252, an upper joint seat, 226, a second connecting rod, 227, a rotary joint, 228, a backrest plate and 23, and a third locking mechanism.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the art, the rod member is a pipe member for reducing weight or arranging a pipeline therein, but the core purpose is to transmit torque and support the relation of the frame 1 no matter the rod member is a pipe member or a rod member, so that the rod member in the present invention can be realized in various ways, and is beneficial to hollow pipe members and the like to support multi-directional torque, thereby being a tensile, compression and bending resistant member.

Meanwhile, the hinging, rotating connection and the like are realized by common technical means in the field without specific description, for example, all parts are sequentially overlapped in the axial direction at the pivot position and are matched by the pivot, and the pivot can be a separate part or can be an integral structure with one of the parts. The former concept, without specific emphasis herein, should be understood as the positive direction of the child stroller in the normal push direction, and independent of the seat orientation. Likewise, the forward direction of the seat is understood to mean that the orientation of the seat coincides with the normal pushing direction of the buggy.

Referring to fig. 1a to 1b, the application discloses an automatic folding stroller, comprising a frame 1 and a seat 2 detachably mounted on the frame 1, wherein the frame 1 comprises two opposite side frames 11, each side frame 11 comprises a front foot bar 115 and a rear foot bar 114 which are hinged with each other, an upper push handle bar 111 and a lower push handle bar 112 which are hinged with each other, the lower push handle bar 112 is also hinged with the rear foot bar 114, a side bar 113 is hinged between the upper push handle bar 111 and the rear foot bar 114, the upper push handle bar 112, the side bar 113, the rear foot bar 114 and the lower push handle bar 112 form a first link mechanism which can be switched between a folded state and an unfolded state, and the first link mechanism is provided with a first locking mechanism (not shown);

The seat 2 comprises a seat board 21 and a backboard 228 hinged to the seat board 21, the backboard 228 has a folded state rotated to a preset angle relative to the seat board 21 and an opposite riding state, and the self gravity of the seat 2 in the folded state can drive a first link mechanism of the release lock to enter the folded state and keep the frame 1 to stand, and in the process of the first link mechanism entering the folded state, the front foot rod 115 and the rear foot rod 114 are close to each other to realize the standing of the frame 1.

The variation of the first link mechanism enables the spatial expansion and folding of the side frame 11. It will be appreciated that the side frames 11 can be moved synchronously by means of links to allow the frame 1 to be unfolded and folded in a spatial configuration. According to the technical scheme disclosed by the application, the automatic folding of the frame 1 is realized through the optimization of the relation of the frame rod pieces, the frame can be kept in a standing state after the folding action is finished, the operation is convenient, and the user experience is good. Keeping the frame 1 standing is understood to mean that the frame 1 is able to achieve a stable contact with the supporting surface, avoiding the occurrence of falls, jolts etc.

In the illustrated embodiment, the weight of the seat 2 acts on the push-down handle bar 112, and movement of the push-down handle bar 112 enables an overall change in the first link mechanism, thereby enabling an overall collapse of the truck side frame 11.

The folding state of the seat 2 is set differently according to the change of the relation of the frame bars, for example, in the scheme shown in the drawings, the back plate 228 is closed toward the seat plate 21 to enter the folding state, and in another embodiment, the back plate 228 is far away from the seat plate 21 to enter the folding state. In principle, the back plate 228 is understood to be in a sitting state when moving relative to the seat plate 21 to form a space structure to form a sitting space, and is understood to be in a folding state when moving relative to the seat plate 21 to destroy the sitting space on a three-dimensional structure, so as to achieve a more regular folding effect.

The first link mechanism realizes state switching of the main body of the side frame 11, and other bars can be arranged on the frame 1. For the simultaneous realization of the movements of the individual rods, corresponding transmission mechanisms can be provided. Referring to an embodiment, each truck side frame 11 includes:

Front foot bar 115 and rear foot bar 114 are hinged at their top ends and mounted with front roller 1151 and rear roller 1141 at their bottom ends, respectively;

an upper push handle bar 111 and a lower push handle bar 112, the middle of the lower push handle bar 112 is hinged with the middle of the rear foot bar 114, and the bottom of the lower push handle bar 112 extends to the front foot bar 115 beyond the rear foot bar 114;

a side lever 113, both ends of which are hinged with the push-up lever 111 and the rear foot lever 114, respectively;

A base 116 for mounting the seat 2 and having both ends respectively hinged to the push-down hand lever 112 and the front foot lever 115;

a linkage rod 117, both ends of which are respectively hinged with the bottom of the lower push rod 112 and the middle of the front foot rod 115;

the rear foot bar 114, the front foot bar 115, the push-down hand bar 112 and the link bar 117 constitute a second link mechanism;

In the unfolded state, the center of gravity of the seat 2 is close to the hinge between the base 116 and the push-down lever 112.

The second link mechanism is used to realize the linkage of the front foot bar 115 and the first link mechanism, wherein the first link mechanism and the second link mechanism share the rear foot bar 114, so that the two link mechanisms can easily realize the linkage.

In the base drive implementation, the base 116 is hinged at the front to the front foot bar 115 and at the rear to the lower push bar 112, and the seat pan 21 is rotatably connected to the base 116 such that the seat has two orientations. It will be appreciated that the seat has a forward direction with the seating space facing away from the frame and a reverse direction towards the frame, the centre of gravity of the seat in the forward direction being adjacent the hinge between the base and the push down lever in the deployed condition.

Referring to the drawings, two ends of the base 116 are respectively hinged to the push-down hand lever 112 and the front foot lever 115, so as to better drive the first link mechanism by gravity of the seat 2, in this embodiment, the center of gravity of the seat 2 is set. In an actual product, the center of gravity setting of the seat 2 may be achieved by setting components, such as the backboard 228, the bar of the seat 2, and the side of the seat 2 near the push down lever 112. Referring to fig. 2b and 2d, the seat 2 of the present application may further implement a change in the center of gravity of the changed seat 2, thereby providing a structural basis for other functions. For example, in fig. 2d, the seat 2 is shifted rearward with the center of gravity near the hinge between the base 116 and the forefoot bar 115, at which point the weight of the seat 2 can drive the first link mechanism of the release lock into the deployed state, thereby remaining stable.

The important point of the application is that the first link mechanism can be brought into a folded state by its own weight when the seat 2 is in the forward direction, so the setting of the weight is very critical. In one embodiment, the hinge between the base 116 and the lower push rod 112 and the hinge between the rear foot rod 114 and the lower push rod 112 are offset in the direction of gravity.

The torque can be realized at the hinge position with staggered arrangement. The hinge between the base 116 and the lower push rod 112 is driven vertically downwards by the gravity of the seat 2, and the hinge between the rear foot rod 114 and the lower push rod 112 is relatively stable by the support of the rear foot rod 114 and the front foot rod 115, so that the lower push rod 112 can generate a movement trend of rotating clockwise in fig. 1b, thereby folding the first link mechanism, and the distance between the hinge between the base 116 and the lower push rod 112 and the hinge between the rear foot rod 114 and the lower push rod 112 is the length of a driving arm, and the specific length can be adjusted according to the specific proportion of the frame 1.

As described above, the driving effect by the gravity of the seat 2 is multidimensional, for example, the gravity of the seat 2 at the hinge between the base 116 and the push-down lever 112 can drive the first link mechanism into the folded state, and the gravity of the seat 2 at the hinge between the base 116 and the front foot lever 115 can cause the movement tendency of the front foot lever 115 and the rear foot lever 114 to be separated from each other, i.e., the first link mechanism is kept in the unfolded state. In addition to the technical route described above in which this problem is avoided by the center of gravity arrangement, the embodiment disclosed with reference to fig. 2a can also be constructed such that the base 116 and the front foot bar 115 are hinged to each other by the swing bar 118, and the height of the hinge between the base 116 and the swing bar 118 is maintained substantially constant when the side frame 11 is moved from the unfolded state to the folded state.

When the frame 1 is kept in the unfolded state, the rear end of the base 116 and the position of the push-down lever 112 are determined, the swing lever 118 has a stable spatial position, so that the base 116 is stable, and when the frame 1 is put in the folded state from the unfolded state, the swing lever 118 can release the movement stroke between the front foot lever 115 and the push-down lever by its own movement. From the practical working effect, because of the arrangement of the swinging rod 118, the height of the front end of the base 116 in the gravity direction can be basically kept unchanged, so that the gravity applied by the seat 2 is avoided to do work, and the moment effect that the gravity of the seat 2 keeps the frame 1 in the unfolded state is avoided. The automatic vehicle collection of the vehicle frame 1 can be realized by cooperating with the arrangement that the gravity center of the seat 2 is close to the rear end of the base 116.

In the maintenance of each state of the frame 1, referring to an embodiment, the first locking mechanism is used for maintaining the corresponding side frame 11 in an unfolded state, in a folded state, the side bar 113 of each side frame 11 is abutted against the rear foot bar 114, the side frame 11 or the rear foot bar 114 of each side frame 11 is provided with the second locking mechanism 12 matched with the side bar 113, and the second locking mechanism 12 is used for maintaining the corresponding side frame 11 in a folded state.

The first locking mechanism enables the frame 1 to be stable in the deployed state, thereby providing a comfortable ride for children and a user push. The second locking mechanism 12 can realize the stability of the frame 1 in the folded state, thereby facilitating the transportation and storage of the automatically folded frame 1 for a user.

The second locking mechanism 12 may be provided as a single locking mechanism or may be provided as an automatic locking mechanism to further enhance the convenience of automatic folding operation. In one embodiment, the second locking mechanism 12 comprises a latch 121 and a latch 122, wherein the latch 121 and the latch 122 are provided with guiding structures, and when the side frame 11 is folded, the side bar 113 and the rear foot bar 114 are close to each other, and the latch 121 and the latch 122 are locked by the guiding structures.

In a specific product, the lock tongue 121 is an elastic component, and can deform under the action of the guiding structure to avoid the lock catch 122 to realize locking. The release process may release the shackle 122 by deformation of the locking tongue 121.

In the specific form of the frame 1 in the folded state, referring to an embodiment, in the folded state, each of the side frames 11 is provided as follows:

the side bars 113 and the front foot bar 115 are respectively abutted against the rear foot bar 114 from both sides;

The push-up hand bar 111, the side bar 113, the rear foot bar 114, and the front foot bar 115 are sequentially abutted;

the push-down hand lever 112, the side lever 113, and the front foot lever 115 are respectively abutted against the rear foot lever 114 from three directions.

The whole appearance and the volume of the frame 1 in the folded state can be optimized by the sequential leaning of the rod pieces, and the storage and transportation are convenient. It is noted that the bars on each side frame 11 may be disposed out of plane so as to spatially avoid interference between the bars. For example, in the present embodiment, the push-down lever 112, the side lever 113, and the front foot lever 115 are respectively abutted against the rear foot lever 114 from three directions, which means three mutually-exclusive faces of the rear foot lever 114 in space. This setting can fully utilize the interrelationship of member to realize more reasonable accomodating volume and show.

In the standing of the frame 1 in the folded state, in the reference embodiment, the top end of the lower push rod 112 is provided with the folding roller 1121, and in the folded state, the folding roller 1121 and the front roller 1151 are respectively located at two sides of the rear roller 1141, and the rear roller 1141 and the front roller 1151 realize standing or the rear roller 1141 and the folding roller 1121 realize standing.

The rear roller 1141 and the front roller 1151 can realize a set of supporting structures, and the rear roller 1141 and the folding roller 1121 can also realize a set of supporting structures, and the arrangement mode in the embodiment provides a structural basis for automatic folding and standing of the frame 1, and can flexibly set the rod relation of the frame 1 according to different conditions.

In one embodiment, the front roller 1151 is a universal wheel, and in the folded state, the center of gravity of the seat 2 is located on the side of the rear roller 1141 facing the folding roller.

When the front roller 1151 is a universal wheel or the front foot bar 115 is short, the frame 1 in the folded state cannot stably stand through the front roller 1151 and the rear roller 1141, and the center of gravity of the seat 2 is set to ensure that the frame 1 in the folded state stably stands through the rear roller 1141 and the folding roller. Especially, the frame 1 can be disturbed due to the action of the rod piece of the frame 1 in the automatic folding process, and the gravity center of the seat 2 can well inhibit the movement trend, so that the stable automatic folding of the frame 1 is realized.

Referring to fig. 5a to 5b, in one embodiment, the seat 2 includes a folding bracket 22 and a seat cover mounted on the folding bracket 22, the folding bracket 22 includes two seat side frames 221 symmetrically arranged, and each seat side frame 221 includes:

a seat plate 21 engaged with the base 116;

a front seat bar 222, the lower end of which is hinged with the front side of the seat plate 21;

A squatting bar 223, the lower end of which is hinged with the rear side of the seat plate 21;

A first link 224, one end of which is hinged with the middle of the front seat bar 222 and the other end of which is hinged with the upper end of the rear seat bar 223;

A handle bar 225, the lower end of which is hinged with the upper end of the front seat bar 222;

A second link 226 having one end hinged to the upper end of the squat bar 223 and the other end hinged to the lower end of the handle bar 225;

a backboard 228, the bottom of which is hinged with the rear side of the seat board 21;

The seat plate 21, the front seat bar 222, the first link 224, and the squat bar 223 constitute a third link mechanism deformable with the folding bracket 22, and the front seat bar 222, the handle bar 225, the first link 224, and the second link 226 constitute a fourth link mechanism deformable with the folding bracket 22.

The third link mechanism and the fourth link mechanism structurally share the first link 224 and the front seat lever 222, and thus the change in spatial configuration of the third link mechanism is synchronized to the fourth link mechanism, thereby achieving folding and unfolding of the seat 2. The front seat post 222 and the rear seat post 223 need to be hinged with the seat plate 21 in different axes, i.e. a single side edge of the seat plate 21 is provided with a first hinge point and a second hinge point at different positions, the lower end of the front seat post 222 is hinged with the first hinge point, and the lower end of the rear seat post 223 is hinged with the second hinge point.

The seat board 21 is used for realizing the forward and backward rotation of the seat 2 relative to the frame 1, and the folding bracket 22 is used as a framework and is mainly used for supporting a cloth cover and a awning, and has two states of folding and unfolding.

In one embodiment, the first link 224, the upper end of the squat bar 223, and the second link 226 are coaxially hinged, and the handlebar 225 is provided with an extension 2251 extending toward the squat bar 222, and the second link 226 is hinged to the handlebar 225 via the extension 2251.

Since the two link mechanisms share the first link 224, the first link 224 is in a connection relationship with two members, which in this embodiment takes the form of a coaxial hinge for simplicity of construction and ease of assembly. The order of arrangement of the specific components can be adjusted according to the folding requirements of the folding bracket 22.

The extension 2251 is actually part of the handle bar 225, and in order to avoid a pinch gap, in one embodiment the extension 2251 abuts the front seat bar 222 in the unfolded state of the folding bracket 22.

In the mating relationship of the bars, in one embodiment, the folding bracket 22 is in a folded state with the handle bar 225 and the squat bar 223 respectively abutting against both sides of the front squat bar 222.

The folding state of the form can obtain more regular folding performance, and is convenient for users to use under different conditions.

The articulation between the bars can be achieved by a simple shaft or by the provision of a swivel 227. In an embodiment, the bottom of the handle 225 is provided with an upper joint seat 2252, the top of the front seat 222 is provided with a lower joint seat 2221, the upper joint seat 2252 and the lower joint seat 2221 are mutually buckled to form a rotary joint 227 by taking the first rotation axis as the rotation center, and a third locking mechanism 23 for restraining the two from rotating mutually is arranged inside the rotary joint 227.

In this embodiment, the revolute joint 227 enables articulation of the side bar 113 and the forefoot bar 115. The advantage of the joint seat is that the occurrence of a grip gap can be avoided while at the same time more components, such as the third locking mechanism 23, can be accommodated. In order to avoid the influence of the larger joint seat on the movement relationship of the rod, in an embodiment, the extending path of the second link 226 is curved, and the second link 226 is attached to the outer peripheral surface of the rotating joint 227 when the folding bracket 22 is in the folded state. The provision of the second link 226 as an arcuate bar also provides a degree of assistance in the folding effect of the folding bracket 22, allowing for a more orderly folded appearance.

Referring to fig. 1a to 4c, the present application also discloses an automatic folding method of a child stroller, comprising:

Unlocking the first locking mechanism;

The rear end of the base 116 moves downwards in the gravity direction under the action of the gravity of the seat 2 until the side rods 113 and the rear foot rods 114 of each frame 1 are mutually abutted, and the frame 1 in the folded state realizes self-standing in any one of the following modes:

By the front roller 1151 at the bottom of the front foot bar 115 and the rear roller 1141 at the bottom of the rear foot bar 114, or

The rear roller 1141 at the bottom of the rear foot bar 114 and the folding roller 1121 at the top of the lower push handle bar 112 are abutted against the supporting surface.

The method can be realized by the automatic folding child cart in the technical scheme, and the unfolding process is performed reversely, so that the description is omitted.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.

Claims

1. The automatic folding baby stroller comprises a frame and a seat which is detachably arranged on the frame, wherein the frame comprises two side frames which are oppositely arranged, and the automatic folding baby stroller is characterized in that each side frame comprises a front foot rod and a rear foot rod which are mutually hinged, an upper pushing hand rod and a lower pushing hand rod which are mutually hinged, the middle part of the lower pushing hand rod is also hinged to the middle part of the rear foot rod, a side rod is hinged between the upper pushing hand rod and the rear foot rod, the upper pushing hand rod, the side rod, the rear foot rod and the lower pushing hand rod form a first connecting rod mechanism which can be switched between a folding state and an unfolding state, the first connecting rod mechanism is provided with a first locking mechanism, the bottom of the lower pushing hand rod extends to the front foot rod beyond the rear foot rod, the bottom of the lower pushing hand rod is hinged with the middle part of the front foot rod, and the rear foot rod, the front foot rod, the lower pushing hand rod and the rods form a second connecting rod mechanism, and a first connecting rod mechanism is arranged between the two side frames, and the front foot rod are hinged;

The seat comprises a seat board connected to the base and a backrest board hinged to the seat board, wherein the backrest board is provided with a folding state and a relative riding state, the folding state is rotated to a preset angle relative to the seat board, the seat is provided with a forward direction of a riding space facing away from the frame and a reverse direction of the riding space facing towards the frame, when the seat is in the forward direction, the self gravity of the seat in the folding state can drive the first link mechanism of the release lock to enter the folding state and keep the frame to stand, and in the process of entering the folding state, the front foot bar and the rear foot bar are mutually closed to realize the standing of the frame;

in the unfolding state, the center of gravity of the seat is close to the hinge joint between the base and the lower push rod, the center of gravity of the seat after the change is close to the hinge joint between the base and the front foot rod, so that the front foot rod and the rear foot rod generate a movement trend of being separated from each other, and the first connecting rod mechanism is kept in the unfolding state.

2. The automated collapsible stroller of claim 1, wherein,

The top ends of the front foot rod and the rear foot rod are hinged with each other, and the bottom ends of the front foot rod and the rear foot rod are respectively provided with a front roller and a rear roller.

3. The automatic folding stroller of claim 2, wherein a folding roller is provided at a top end of the push-down hand lever, and in a folded state, the folding roller and the front roller are respectively located at two sides of the rear roller, and the rear roller and the front roller are standing or the rear roller and the folding roller are standing.

4. The automated folding stroller of claim 3, wherein the front rollers are universal wheels and the center of gravity of the seat is located on a side of the rear rollers facing the folding rollers in the folded position.

5. The automated folding stroller of claim 1, wherein in the unfolded state, the hinge between the base and the lower push handle bar and the hinge between the rear foot bar and the lower push handle bar are offset in the direction of gravity.

6. The automated folding child stroller of claim 1, wherein the height of the base and swing link hinge in the direction of gravity remains substantially unchanged as the side frame moves from the unfolded state to the folded state.

7. The automated folding stroller of claim 1, wherein the seat comprises a folding leg and a seat cover mounted on the folding leg, the folding leg comprising two symmetrically disposed seat side frames, each seat side frame comprising:

A seat plate which is matched with the base;

the bottom of the backboard is hinged with the rear side of the seat board;

8. The automatic folding child stroller of claim 1, wherein the first locking mechanism is configured to hold the corresponding sideframe in an unfolded state, wherein in a folded state, the side bar of each sideframe abuts against the rear foot bar, and wherein a second locking mechanism that cooperates with the side bar is provided on the rear foot bar of one or each sideframe, and wherein the second locking mechanism is configured to hold the corresponding sideframe in a folded state;

The second locking mechanism comprises a lock tongue and a lock catch which are matched with each other, wherein guide structures which are matched with each other are arranged on the lock tongue and the lock catch, when the side frame of the vehicle enters a folding state, the side rod and the rear foot rod are close to each other, and the lock tongue and the lock catch are locked with each other through the guide structures.

9. The self-collapsing stroller of claim 1, wherein each side frame is configured in a collapsed condition as follows: