CN111361625A

CN111361625A - Foldable baby carriage

Info

Publication number: CN111361625A
Application number: CN201811592385.XA
Authority: CN
Inventors: 沈俭
Original assignee: Guangzhou Aofei Baby Supplies Co ltd
Current assignee: Guangzhou Aofei Baby Supplies Co ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-07-03

Abstract

The invention discloses a foldable stroller, comprising: a front bracket; the front bracket is rotatably connected with the rear bracket through a first hinge point; the front end of the side handrail is rotationally connected with the rear support through a third hinge point; the third hinge point is positioned above the first hinge point, and the end of the side handrail, which is connected with the rear support, is an arc-shaped bent part; the foldable stroller has an unfolded state and a folded state, wherein the side handrails and the rear support form a V shape in the unfolded state, the lower end of the front support, the upper end of the side handrails and the upper end of the support rod are folded towards the lower end of the rear support in the folded state, and the upper end of the push rod is folded towards the upper end of the rear support. According to the foldable stroller disclosed by the embodiment of the invention, the state is stable in the unfolded state, the occupied space is small in the folded state, and the foldable stroller is convenient to carry.

Description

Foldable baby carriage

Technical Field

The invention relates to the technical field of baby carriers, in particular to a foldable baby stroller.

Background

A plurality of trolleys with folding functions are disclosed in the related art, and the support of the trolley is quite complex in design and complex in operation. Especially, the existing high-landscape portable frame utilizes the quadrilateral principle, has large size after being folded, and is inconvenient for the push rod to fold and unfold downwards.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a foldable baby stroller which is simple, compact and stable in structure, convenient to carry and small in occupied space.

The invention also provides a trolley with the foldable baby trolley.

A foldable stroller in accordance with an embodiment of a first aspect of the present invention comprises:

a front bracket;

the front bracket is rotatably connected with the rear bracket through a first hinge point;

the side handrail is arranged above the rear support, and the front end of the side handrail is rotatably connected with the rear support through the third hinge point;

a push rod rotatably connected to the top end of the side rail,

the upper end of the support rod is rotatably connected with the push rod, and the lower end of the support rod is rotatably connected with the rear support;

the two ends of the connecting rod are respectively and rotatably connected with the front bracket and the lower end of the support rod;

the third hinge point is positioned above the first hinge point, one end of the side handrail, which is connected with the rear support, is an arc-shaped bent part,

the front end of the seat board is rotatably connected to the third hinge point, and a sliding groove is formed in the seat board; the sliding rod is telescopically matched in the sliding groove, and the rear end of the sliding rod is connected with the upper support rod;

collapsible children's shallow has expansion state and accomodates the state, and under expansion state, the side handrail forms the V-arrangement with the after-poppet, under the state of accomodating, the lower extreme of fore-stock the upper end of side handrail the upper end of vaulting pole all moves towards the lower extreme of after-poppet is drawn close foldingly, the upper end orientation of push rod the upper end of after-poppet is drawn close foldingly.

In some embodiments of the present invention, the foldable stroller further includes an unlocking belt disposed on the seat, the unlocking belt is connected to the connecting rod or the supporting rod, and the eighth hinge point is driven to move closer upward when the unlocking belt is pulled upward.

Further, an end of the unlocking strap extends into the stay from a lower end of the stay and is connected to an upper end of the stay.

Optionally, the unlocking strap comprises: an elastic band arranged on the chair seat and a guy cable arranged in the stay bar.

According to some embodiments of the present invention, the rear bracket is provided with a matching rotary rod, the upper end of the front bracket is provided with a matching rotary groove, and the matching rotary rod is arranged in the matching rotary groove and connected through a rotary pin.

According to some embodiments of the invention, further comprising a second limiting mechanism, the second limiting mechanism comprising: the clamping device comprises a clamping table arranged on the side handrail and a clamping tenon arranged on the upper support rod, wherein the clamping tenon is clamped on the clamping table in an unfolding state.

Furthermore, the clamping tenon is arranged at the top of the upper support rod and is positioned above the rotary connection point of the support rod and the push rod, a first matching groove matched with the clamping table is formed in the bottom of the push rod, and a second matching groove matched with the clamping tenon is formed in the side handrail.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a foldable stroller according to an embodiment of the present invention.

Fig. 2 is a schematic view of a cart (during deployment) according to an embodiment of the present invention.

Fig. 3 is another schematic view of a cart according to an embodiment of the invention (the cart in a stowed position).

Reference numerals:

the foldable stroller 100, the front wheel 200, the rear wheel 300,

a front bracket 10, a first hinge point 11, a second hinge point 12, a matching rotating rod 13, a rotating pin 14, a rear bracket 20, a third hinge point 21, a fourth hinge point 22, a fifth hinge point 23,

the length of the side rail 30, the chuck 31,

a stay 40, a sixth hinge point 41, a seventh hinge point 42, an eighth hinge point 43, an upper stay 44, a tenon 441, a relief recess 442, a lower stay 45,

a connecting rod 50, a push rod 60, a chair seat 70, a chair plate 71, a sliding rod 72, an unlocking belt 80, an elastic band 81, a pull rope 82,

a first limiting mechanism A and a second limiting mechanism B.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered limiting. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A foldable stroller 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.

The foldable stroller 100 according to an embodiment of the first aspect of the present invention comprises: a front bracket 10, a rear bracket 20, a side rail 30, a stay 40, a link 50, and a push rod 60.

As shown in fig. 1 and 2, the front bracket 10 extends upward in an inclined manner from front to back, the front bracket 10 is provided with a first hinge point 11 and a second hinge point 12, the first hinge point 11 is located above the second hinge point 12, the rear bracket 20 extends downward in an inclined manner from front to back, the rear bracket 20 is provided with a third hinge point 21, a fourth hinge point 22 and a fifth hinge point 23 in sequence from top to bottom, and the fourth hinge point 22 is rotatably connected with the first hinge point 11.

The side arm rest 30 is arranged above the rear support 20, the front end of the side arm rest 30 is rotatably connected with the third hinge point 21, the support rod 40 extends obliquely upwards from front to back, a sixth hinge point 41, a seventh hinge point 42 and an eighth hinge point 43 are sequentially arranged on the support rod 40 from top to bottom, the seventh hinge point 42 is rotatably connected with the fifth hinge point 23, the part of the support rod 40 between the sixth hinge point 41 and the seventh hinge point 42 forms an upper support rod 44, the part of the support rod 40 between the seventh hinge point 42 and the eighth hinge point 43 forms a lower support rod 45, two ends of the connecting rod 50 are rotatably connected with the second hinge point 12 and the eighth hinge point 43 respectively, the push rod 60 is rotatably connected with the top end of the side arm rest 30, and the lower end of the push rod 60 is rotatably connected with the sixth hinge point 41.

The third hinge point 21 is positioned above the first hinge point 11, and the end of the side handrail 30 connected with the rear support 20 is an arc-shaped bent part; in the unfolded state, the side rail 30 forms a V-shape with the rear bracket 20.

The foldable stroller 100 can be folded and stored by the pivotally connected fourth hinge point 22 and the first hinge point 11, the front end and the third hinge point 21 of the side rail 30, the fifth hinge point 23 and the seventh hinge point 42, the front end and the second hinge point 12 of the link 50, the rear end and the eighth hinge point 43 of the link 50, and the push rod 60 and the rear end of the side rail 30.

Referring to fig. 1, a front bracket 10, a rear bracket 20, a link 50 and a lower strut 45 constitute a first four-bar link mechanism, a rear bracket 20, a side rail 30, a push rod 60 and an upper strut 44 constitute a second four-bar link mechanism, a first limiting mechanism a is provided between the front bracket 10 and the rear bracket 20 to limit a maximum unfolded angle between the front bracket 10 and the rear bracket 20, a second limiting mechanism B is provided between the side rail 30 and the upper strut 44 to limit a sixth hinge point 41 on the side rail 30, and the foldable stroller 100 has an unfolded state and a stored state.

As shown in fig. 2 and 3, in the stored state, the lower end of the front bracket 10, the upper end of the side rail 30, and the upper end of the stay 40 are folded toward the lower end of the rear bracket 20, and the upper end of the push rod 60 is folded toward the upper end of the rear bracket 20.

It will be understood herein that the rear bracket 20 and the strut 40 are constituent members of two four-bar linkages, and thus the two four-bar linkages are in a linked relationship.

As can be seen from fig. 1, when the foldable stroller 100 is in the unfolded state, the first four-bar linkage is located below the second four-bar linkage, and the two form an opposite double-triangle structure.

The upper ends of the front and

rear brackets

10 and 20 are connected to each other obliquely to form the apex angle of a triangle when the foldable stroller 100 is in the unfolded state. By the limitation of the first limiting mechanism a, when the maximum deployment angle between the front bracket 10 and the rear bracket 20 is reached, the front bracket 10 and the rear bracket 20 cannot be opened more, and at the same time, the link 50 and the lower support bar 45 are connected between the front bracket 10 and the rear bracket 20, so that the front bracket 10, the rear bracket 20, the link 50 and the lower support bar 45 form a stable upright triangle structure.

In the second four-bar linkage mechanism, when the foldable stroller 100 is in the unfolded state, the lower end of the rear bracket 20 and the lower end of the upper stay 44 are connected to each other obliquely to form the apex angle of the triangle. The sixth hinge point 41 is restrained on the side rail 30 by the second restraining mechanism B, and thus the rear bracket 20, the upper support rod 44, and the side rail 30 form a stable inverted triangle structure.

The front support 10, the rear support 20, the side arm rests 30, the support rods 40, the connecting rods 50 and the push rods 60 form an integral framework of the foldable stroller 100, the foldable stroller 100 is in a stable state in an unfolded state, the seat 70 installed in the stable state is also in a stable state, and a user can sit on the seat 70 stably.

Moreover, due to the connection of the two sets of four-bar linkage mechanisms, the overall height of the foldable stroller 100 can be designed to be very high, and the seat 70 can be positioned at a high place when being unfolded, so that the view at the high place can be conveniently seen.

As shown in fig. 3, when the foldable stroller 100 needs to be stored, one of the four-bar linkages is actuated to drive the other four-bar linkage to move. In a folded state, the lower ends of the front support 10 and the rear support 20 are gathered together, and meanwhile, the upper ends of the front support 10, the rear support 20 and the push rod 60 are gathered together, so that the whole portable bicycle is convenient to carry.

According to the foldable stroller 100 of the embodiment of the present invention, the front frame 10, the rear frame 20, the connecting rods 50 and the lower supporting rods 45 form a first four-bar linkage, the rear frame 20, the side arm rests 30, the pushing rods 60 and the upper supporting rods 44 form a second four-bar linkage, the first limiting mechanism a is disposed between the front frame 10 and the rear frame 20 of the first four-bar linkage, the second limiting mechanism B is disposed in the hinge area between the side arm rests 30 and the upper supporting rods 44 of the second four-bar linkage, and the first limiting mechanism a is linked with the second limiting mechanism B, so that when the foldable stroller 100 is in the unfolded state, the first limiting mechanism a and the second limiting four-bar linkage function to stabilize the structure of the foldable stroller 100, and when the foldable stroller 100 is in the folded state, the first limiting mechanism and the second limiting mechanism are retracted and the pushing rods 60 are upward, the foldable stroller 100 occupies a small space, and push rod 60 is upwardly directed for portability.

According to some embodiments of the invention, the foldable stroller 100 further comprises: a seat 70, the front end of the seat 70 being connected to the side arm rests 30 or the rear bracket 20, and the rear end of the seat 70 being connected to the upper support bar 44. So that the seat 70 is generally horizontal and ready for seating when the foldable stroller 100 is in the unfolded position.

In the embodiment shown in fig. 2, the seat 70 is connected to the rear frame 20 at the front end, the upper support bar 44 is connected to the rear end of the seat 70, and the seat 70 is pivotally connected to the rear frame 20 and the upper support bar 44, so that the seat 70 is installed in the space defined by the upper support bar 44 and the side arm rests 30, and thus, not only is the space occupied by the seat 70 when the foldable stroller 100 is unfolded large, but also the seat 70 can move along with the support bar 40, thereby facilitating the storage operation of the foldable stroller 100.

It should be noted that the first four-bar linkage and the second four-bar linkage of the foldable stroller 100 of the present invention are disposed opposite to each other in the vertical direction. Thus, the foldable stroller 100 is suitable for high-landscape strollers, and the higher seat 70 effectively prevents the child from inhaling heavy metal contaminants such as lead and mercury, which may be deposited in areas below one meter from the ground when the child is seated on the stroller.

In some embodiments of the present invention, as shown in fig. 1 and 2, the seat 70 comprises: a seat plate 71 and a sliding rod 72, wherein the front end of the seat plate 71 is rotatably connected to the third hinge point 21, the seat plate 71 is provided with a sliding slot (not shown), the sliding rod 72 is telescopically fitted in the sliding slot, and the rear end of the sliding rod 72 is connected with the upper support rod 44.

Specifically, the seat plate 71 has a slide groove, the slide rod 72 is fitted to the slide groove in an insertion manner, and a front end of the slide rod 72 is movable in the front-rear direction with respect to the front end of the slide groove. Thus, when the foldable stroller 100 is unfolded, the front end of the slide rod 72 moves forward relative to the front end of the seat plate 71 until the front end of the slide rod 72 abuts against the front end surface of the seat plate 71, the foldable stroller 100 is completely unfolded, and when the front end of the slide rod 72 abuts against the rear end of the seat plate 71, the foldable stroller 100 is in the storage state. Therefore, the seat 70 is more stable in the unfolded state of the foldable stroller 100, and the seat 70 does not need to be detached when the foldable stroller 100 is stored or unfolded due to the cooperation of the sliding grooves and the sliding rods 72, thereby facilitating the storage and unfolding operations of the foldable stroller 100.

Of course, the present invention is not limited thereto, and for example, the seat 70 may be pivotally connected to the rear frame 20 at one end, and the other end of the seat 70 may be engaged with the upper stay 44. The other end of the seat 70 can be removed from the upper support bar 44 when the foldable stroller 100 is stowed; conversely, the other end of the seat 70 can be snapped onto the upper support bar 44 when the foldable stroller 100 is unfolded.

For another example, the seat 70 may have one end pivotally connected to the upper support rod 44 and the other end of the seat 70 snap-fit to the rear frame 20. The other end of the seat 70 can be removed from the rear support 20 when the foldable stroller 100 is stowed; conversely, the other end of the seat 70 can be snapped onto the rear bracket 20 when the foldable stroller 100 is unfolded.

Also for example, the seat 70 is a flexible piece of cloth that expands when the foldable stroller 100 is unfolded and contracts when the foldable stroller 100 is stowed.

In short, the seat 70 is not unique in terms of how the stroller 100 is mounted, but rather how the stroller 100 is secured to facilitate the storage and deployment operations of the stroller 100 is an alternative to the embodiments of the present invention.

In some embodiments of the present invention, as shown in fig. 1, the foldable stroller 100 further comprises an unlocking belt 80 disposed on the seat 70, wherein the unlocking belt 80 is connected to the connecting rod 50 or the supporting rod 40, and the eighth hinge point 43 is moved upward when the unlocking belt 80 is pulled upward. As a result, the stable triangular structure of the first four-bar link mechanism in the unfolded state of the foldable stroller 100 is broken, and the foldable stroller 100 can be stored.

Specifically, when the foldable stroller 100 is in the unfolded state, the foldable stroller 100 is a stable structure, the first four-bar linkage and the second four-bar linkage are both formed in a triangular structure, the structure is very stable, and at this time, the connecting end of the link 50 and the stay 40 is moved upward by pulling the unlocking belt 80 upward, so that the front bracket 10 and the rear bracket 20 in the first four-bar linkage are drawn together, and at the same time, the rear end of the stay 40 is moved downward, so that the upper end of the side rail 30 is driven to move downward, and the foldable stroller 100 is stored.

According to some embodiments of the present invention, the rear bracket 20 is provided with a matching rotary rod 13, the upper end of the front bracket 10 is provided with a matching rotary groove (not shown), the matching rotary rod 13 is arranged in the matching rotary groove and connected by a rotary pin 14, and when the front bracket 10 rotates to the maximum unfolding angle relative to the rear bracket 20, the upper end of the front bracket 10 stops against the front side of the fourth hinge point 22 to form a first limiting mechanism a.

That is, the front bracket 10 and the rear bracket 20 can rotate relatively, and in a connection region where the front bracket 10 and the rear bracket 20 rotate relatively, a right angle connection is formed between the top wall and the front side wall of the front bracket 10, and an arc-shaped transition connection is formed between the top wall and the rear side wall of the front bracket 10, so that after the maximum angle is reached between the front bracket 10 and the rear bracket 20, the top wall of the front bracket 10 vertically abuts against the rear bracket 20, and further, after the maximum angle is reached between the front bracket 10 and the rear bracket 20, the front bracket 10 cannot continue to rotate forward. This stabilizes the structure of the foldable stroller 100 in the unfolded state.

According to some embodiments of the invention, as shown in fig. 2, the second limiting mechanism B comprises: the catch 31 provided on the side rail 30 and the catch 441 provided on the upper stay 44 catch the catch 441 on the catch 31 in the expanded state.

Specifically, as shown in fig. 2, the catch platform 31 of the side armrest 30 is engaged with the catch tongue 441 of the upper stay 44, wherein the catch tongue 441 forms a step surface on one side engaged with the catch platform 31, and is provided with an escape recess 442 on the other side. Therefore, not only the engagement between the tenon 441 and the abutment 31 in the expanded state improves the connection tightness between the side rail 30 and the upper stay 44, but also the provision of the escape recess 442 in the stored state effectively avoids interference when the side rail 30 and the upper stay 44 move relative to each other.

Further, the tenon 441 is disposed on the top of the upper supporting rod 44 and above the sixth hinge point 41, the bottom of the push rod 60 is disposed with a first engaging groove for engaging with the clamping platform 31, and the side rail 30 is disposed with a second engaging groove for engaging with the tenon 441. The first and second fitting grooves improve the connection tightness between the tenon 441 and the clamping platform 31, and the first and second fitting grooves prevent interference during relative movement between the side rail 30, the stay bar 40 and the push rod 60.

Referring to fig. 1, the unlocking strap 80 includes: an elastic band 81 provided on the seat 70 and a stay 82 provided in the stay 40. The end of the unlocking strap 80 extends from the lower end of the stay 40 into the stay 40 and is connected to the upper end of the stay 40. Thus, when the unlocking belt 80 is pulled, the unlocking belt 80 can drive the whole first four-bar linkage mechanism to move towards the rear support 20, and can also drive the second four-bar linkage mechanism to approach the rear support 20, so that the whole foldable stroller 100 finishes the storage action. In other words, the provision of the unlocking strap 80 facilitates the stowing operation of the foldable stroller 100.

Here, the unlocking strap 80 is provided in a combined structure of an elastic band 81 and a pulling string 82, the wide elastic band 81 facilitates the user to lift the foldable stroller 100, and the narrow pulling string 82 not only ensures the connection reliability but also facilitates the insertion into the stay 40.

A trolley according to an embodiment of the second aspect of the invention comprises: a foldable stroller 100, a front wheel 200 and a rear wheel 300, wherein the front wheel 200 is arranged at the bottom of the front frame 10 of the foldable stroller 100, and the rear wheel 300 is arranged at the bottom of the rear frame 20 of the foldable stroller 100.

Specifically, the foldable stroller 100 according to the embodiment of the present invention has a front wheel 200 mounted on the lower end of the front frame 10 and a rear wheel 300 mounted on the lower end of the rear frame 20, wherein at least one of the pair of front wheels 200 and the pair of rear wheels 300 is a universal wheel. Therefore, the trolley can conveniently move on the road.

In the stroller of the embodiment of the present invention, the push rod 60 may further include a sunshade supported forward, the seat 70 may further include a child armrest, the side armrest 30 may include a protrusion protruding upward, the protrusion protruding upward and the sunshade of the side armrest 30 may improve the comfort of the stroller, and the child armrest disposed on the seat 70 may improve the safety of the stroller. Thus, the comfort and safety of the trolley are improved.

The switching operation of the cart between the deployed state and the stowed state is described in detail below with reference to fig. 1 to 3.

When the cart is switched from the unfolded state to the storage state, the unlocking belt 80 is pulled upward, the unlocking belt 80 moves upward to drive the connecting end of the connecting rod 50 and the lower stay 45 to move, and meanwhile, the unlocking belt 80 moves downward through one end connected with the second limiting mechanism B, so that the upper end of the stay 40 moves downward.

When the connecting end of the link 50 and the lower stay 45 moves upward, the lower end of the front bracket 10 is driven to move toward the rear bracket 20, so that the first four-bar link mechanism is folded.

Meanwhile, as the lower end of the stay 40 moves upward, the upper end of the stay 40 moves downward, which drives the upper end of the side rail 30 and the lower end of the push rod 60 to move downward, the upper end of the push rod 60 moves toward the upper end of the rear bracket 20, and the second limiting mechanism B is unlocked, so that the second four-bar link mechanism is folded.

As shown in fig. 2, in the storage state, the lower end of the front frame 10, the upper end of the side rail 30, and the upper end of the stay 40 are folded toward the lower end of the rear frame 20, and the upper end of the push rod 60 is folded toward the upper end of the rear frame 20, thereby completing the storage operation of the cart, and the cart in the storage state is as shown in fig. 3. The operation process of switching the cart from the storage state to the unfolding state is opposite to the above process, and a person skilled in the art can know the operation process according to the above operation, so the description is omitted here.

According to the handcart of the embodiment of the invention, a first four-bar linkage mechanism is formed by the front support 10, the rear support 20, the connecting rods 50 and the lower supporting rods 45, a second four-bar linkage mechanism is formed by the rear support 20, the side handrails 30, the push rods 60 and the upper supporting rods 44, a first limiting mechanism A is arranged between the front support 10 and the rear support 20 of the first four-bar linkage mechanism, a second limiting mechanism B is arranged in the hinging area of the side handrails 30 and the upper supporting rods 44 of the second four-bar linkage mechanism, and the first limiting mechanism A is linked with the second limiting mechanism B. Therefore, when the foldable stroller 100 is in the unfolded state, the first limiting mechanism a and the second limiting mechanism B stabilize the structure of the foldable stroller 100, and when the foldable stroller 100 is in the storage state, the first four-bar linkage mechanism and the second four-bar linkage mechanism are contracted and the push rod 60 faces upward, so that not only is the space occupied by the foldable stroller 100 smaller, but also the push rod 60 faces upward to facilitate carrying the stroller.

In short, the trolley according to the embodiment of the invention can be switched between the unfolding state and the storage state at will, so that not only can the space occupation of the trolley be effectively reduced, but also the trolley has high structural stability and simple operation, and is convenient and high in safety when in use.

In the description herein, references to the description of the terms "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A foldable stroller, comprising:

a front bracket;

a push rod rotatably connected to the top end of the side rail,

the third hinge point is positioned above the first hinge point, and one end of the side handrail, which is connected with the rear support, is an arc-shaped bent part;

2. The foldable stroller of claim 1, further comprising an unlocking strap disposed on the seat, wherein the unlocking strap is connected to the link or the stay, and when the unlocking strap is pulled upward, the link and the stay are rotated relative to each other.

3. The collapsible stroller of claim 2, wherein the ends of the unlatching strap extend into the brace from the lower end of the brace and are connected to the upper end of the brace.

4. The foldable stroller of claim 3, wherein the unlocking strap comprises: an elastic band arranged on the chair seat and a guy cable arranged in the stay bar.

5. The foldable stroller of claim 1, wherein a first limiting mechanism is provided between the front support and the rear support to limit a maximum deployment angle between the front support and the rear support.

6. The foldable stroller of claim 1, further comprising a second restraint mechanism, the second restraint mechanism comprising:

the clamping table is arranged on the side handrail;

the clamping tenon is arranged on the upper supporting rod and clamped on the clamping table in an unfolding state.

7. The foldable stroller of claim 6,

the clamping tenon is arranged at the top of the upper support rod and located above the rotary connection point of the support rod and the push rod, a first matching groove matched with the clamping table is formed in the bottom of the push rod, and a second matching groove matched with the clamping tenon is formed in the side armrest.