CN208198538U - A kind of children trolley - Google Patents

Abstract

The utility model relates to a children's stroller, which comprises a foldable vehicle frame, a foldable sleeping basket detachably connected to the vehicle frame, a connecting piece and a support seat, and the sleeping basket includes a cowl rod, a linkage mechanism, and a The rear wall rod connected with the linkage mechanism in rotation, the rear wall rod and the push rod are detachably connected through the connecting piece, and the linkage mechanism is detachably connected with the support seat; When the baby stroller is in use, the frame is unfolded and the sleeping basket is connected to the frame, and the rear wall bar is connected to the push rod through the connecting piece; When in the folded state, the front wall bar, the rear wall bar, and the folded vehicle frame are folded together, and the rear wall bar and the push rod are connected or not connected to each other through the connecting piece; the utility model can realize the common folding of the vehicle frame and the sleeping basket, It is unfolded and detachable, which is convenient for consumers to use.

Description

a stroller for children

technical field

The utility model belongs to the field of children's products, in particular to a children's cart.

Background technique

At present, seatpost assemblies, seat pockets or sleeping baskets, etc. are arranged on children's strollers for children or babies to sit on, and children's strollers can basically be folded. In the prior art, the frame of the sleeping basket is basically formed by grafting or several rods arranged on the frame of the stroller. When the stroller is folded, or after the sleeping basket is taken off, the sleeping basket is folded. Operation, or folded together by the sleeping basket rods formed on the frame of the stroller. On the one hand, it will be troublesome to fold after taking it off, making the folding operation more cumbersome. The carrying basket rod on the frame is folded together with the frame, which not only makes the frame very complicated and bloated, but also increases the difficulty of installation, and it is difficult to realize the frame and carrying basket when it is necessary to simplify the mechanism and reduce the volume occupied by the whole vehicle. separation.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved stroller for children.

For solving above technical problem, a kind of technical scheme that the utility model takes is as follows:

A stroller for children, comprising a vehicle frame with an expanded state and a folded state, a locking mechanism for locking the vehicle frame in the expanded state, a sleeper detachably arranged on the vehicle frame, a front wheel assembly and The rear wheel assembly, the vehicle frame includes side brackets located on the left and right sides of the stroller, the side brackets include a push rod, a front bracket with the front wheel assembly at the bottom, and a rear wheel assembly at the bottom The rear bracket of the baby stroller is in the use state of the sleeping basket. When it is in the use state of the sleeping basket, the frame is in the unfolded state and the sleeping basket is connected to the frame. The sleeping basket includes The cowl bars on the left and right sides of the children's stroller, the linkage mechanism, and the rear wall bars that are rotatably connected to the front wall bars through the linkage mechanism, and the children's stroller also includes connecting the rear wall bars to the a connecting piece detachably connected to the push rod, and a support seat arranged on the vehicle frame, and the linkage mechanism is detachably connected to the support seat;

The baby stroller also has a co-folding state of the sleeping basket frame. When the baby stroller is in the co-folding state of the sleeping basket and the sleeping basket frame, the linkage mechanism is connected with the support seat, wherein when the When the baby stroller is in the state of using the sleeping basket, the front wall bar and the rear wall bar are mutually extended, and the rear wall bar is connected to the push rod through the connecting piece; when the child pushes When the car is in the co-folding state of the sleeping basket frame, the frame is in the folded state, the front wall bar, the rear wall bar, and the vehicle frame are folded together, and the rear wall bar and the push rod Connected or not connected to each other via the connectors.

According to the utility model, when the stroller is folded, turning the push rod backward and downward can drive the rear wall bar to turn backward and downward, and then drive the front wall bar to Front flip down.

According to some preferred aspects of the present utility model, the connecting piece is a hook, and the hook includes a hanging rod, a hook part fixedly connected with one end of the hanging rod or integrally formed, and the other end of the hanging rod is fixedly arranged on the On one of the two components of the rear wall bar and the push rod, the hook portion is hooked on the other of the two parts of the rear wall bar and the push rod.

According to some specific and preferred aspects of the present utility model, the hanging rod is fixedly arranged on the front part of the rear wall rod, and the hook part is hooked on the lower part of the push rod. , the hanging rod extends in the up and down direction.

According to some specific and preferred aspects of the present utility model, the hook portion includes a first covering part located inside the vehicle frame and covering the push rod or the rear wall bar and a The second wrapping part on the front side and wrapping on the push rod or the rear wall bar, the first wrapping part and the second wrapping part are fixedly connected or integrally formed.

According to some preferred aspects of the present utility model, an accommodating cavity is formed on the support seat, and the linkage mechanism is located in the accommodating cavity, and there are also formed on the support seat two front and rear sides of the stroller. The side is used to allow the cowl bar and the back bar to pass through and be able to rotate, and the cowl bar passes through the front side and is connected to the linkage mechanism. The rear wall rod is connected with the linkage mechanism through the relief part on the rear side.

According to some specific and preferred aspects of the present utility model, the support seat includes a first support shell fixedly arranged on the front bracket, and a second support shell detachably connected to the first support shell body, the accommodating cavity is formed when the first supporting shell and the second supporting shell are connected together.

According to some preferred aspects of the present utility model, the linkage mechanism includes a first joint arranged at the rear of the cowl bar, a second joint set at the front of the rear wall bar, a base, and the The rotating shaft rotatably connected to the base and the linkage member slidably arranged on the base along the up and down direction of the stroller, the first joint and the second joint are rotatably connected to the Together, a first arc-shaped slot is formed on the first joint, a second arc-shaped slot is formed on the second joint, the center line of rotation of the first arc-shaped slot, the center line of the second arc-shaped slot The rotation center lines deviate from the axis lines of the rotating shafts respectively, and the linking member includes a linking pin, and the linking pin is slidably inserted in the first arc-shaped slot and the second arc-shaped slot.

According to a specific aspect of the present utility model, the first arc-shaped groove and the second arc-shaped groove respectively have a proximal end close to the rotating shaft and a distal end away from the rotating shaft, when the vehicle frame is in the unfolded state , the linkage pin is slidably inserted into the proximal end of the first arc-shaped groove and the proximal end of the second arc-shaped groove, and when the frame is in the folded state, the linkage pin is slidably Inserted in the distal end of the first arc-shaped slot and the distal end of the second arc-shaped slot.

According to some specific and preferred aspects of the present utility model, the linkage also includes a sliding piece that is fixedly connected with the linkage pin or integrally formed, and the sliding piece is formed with a A chute, the rotating shaft passes through the chute.

According to some specific and preferred aspects of the present utility model, the linkage mechanism further includes a self-locking mechanism for relatively locking the front wall bar and the rear wall bar, and the self-locking mechanism includes a A lock pin slidably arranged on the base in the left and right direction, and a lock pin matching part formed on the first joint and/or the second joint, the lock pin and the lock pin matching part cooperate with each other Locking is realized, and the lock pin is separated from the lock pin matching part to realize unlocking. The linkage mechanism also optionally includes a sliding arrangement on the base along the up and down direction of the stroller for driving the Drive part for locking pin slide.

According to some specific aspects of the present utility model, the sleeper basket also includes a front arc-shaped rod whose two ends are fixedly connected to the front wall rods on the left and right sides or integrally formed, and the two ends are respectively connected to the rear rods on the left and right sides. The surrounding bars are fixedly connected or integrally formed rear arc-shaped bars. When the vehicle frame is in the unfolded state, the front surrounding bars located on the left and right sides of the stroller, and all the front surrounding bars located on the left and right sides of the stroller The rear wall bar, the linkage mechanism located on the left and right sides of the stroller, the front arc bar and the rear arc bar form a ring-shaped closed enclosure.

Due to the adoption of the above technical solutions, the utility model has the following advantages compared with the prior art:

The children's stroller of the utility model can realize the co-folding and unfolding of the foldable sleeping basket and the foldable vehicle frame, and can also be disassembled when necessary, so that the sleeping basket and the vehicle frame can be independently folded and stored or used. It is relatively simple and easy to operate, which greatly facilitates the use of consumers.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the utility model children's stroller;

Fig. 2 is a schematic side view of the utility model children's stroller;

Fig. 3 is a half-folded schematic diagram of the utility model children's stroller;

Fig. 4 is a schematic diagram of the folded state of the children's stroller of the present invention;

Fig. 5 is a schematic side view of the sleeping basket of the children's stroller of the present invention;

Fig. 6 is the enlarged view of place A in Fig. 5;

Fig. 7 is a schematic diagram of the cooperation between the components at A in Fig. 5 when the sleeping basket is in the unfolded state;

Figure 8 is an exploded schematic view of the linkage mechanism;

Fig. 9 is an enlarged view of place B in Fig. 8;

Figure 10 is a schematic top view of the linkage mechanism;

Figure 11 is a schematic cross-sectional view of the C-C direction in Figure 10 (the linkage mechanism is in a locked state);

Figure 12 is a schematic cross-sectional view of the C-C direction in Figure 10 (the linkage mechanism is in an unlocked state);

Among them, 1. front bracket; 2. rear bracket; 3. push rod; 4. sleeping basket; 41. front wall bar; 42. rear wall bar; 431. first joint; The second joint; 4321, the second arc groove; 433, the base; 4331, the first housing; 43311, the limit chute; 4332, the second housing; 434, the rotating shaft; 435, the linkage; 4351, the linkage Pin; 4352, sliding part; 43521, chute; 4361, lock pin; 4362, lock pin matching part; 437, driving part; 44, strut; 45, tent frame; 46, sleeping bag; 51, hanging rod; 522, the second covering part; 6, the supporting seat; 61, the first supporting shell; 62, the second supporting shell; 7, the front wheel assembly; 8, the rear wheel assembly.

Detailed ways

Below in conjunction with accompanying drawing and preferred embodiment of the utility model, the utility model is further described.

In the following embodiments, for the convenience of description, the left, right, up, down, front, and back mentioned in the definition of directions are all orientations with reference to the stroller.

Referring to the children's stroller shown in Figures 1 to 12, it includes a vehicle frame with an unfolded state and a folded state, a locking mechanism for locking the vehicle frame in the expanded state, and a sleeping basket 4 detachably arranged on the vehicle frame , the front wheel assembly 7 and the rear wheel assembly 8, the vehicle frame includes side brackets located on the left and right sides of the stroller, the side brackets include push rods 3, the front bracket 1 with the front wheel assembly 7 at the bottom and the rear wheel assembly at the bottom 8 of the rear bracket 2, the top of the front bracket 1 is rotatably connected to the bottom of the push rod 3, and the middle part of the front bracket 1 is rotatably connected to the rear bracket 2. When the vehicle frame is in the expanded state, the front bracket 1 and the push rod 3 The extension directions are from front to back and upward respectively, and the extension direction of the rear bracket 2 is from back to front and upward.

In this example, the sleeping basket 4 includes a front wall bar 41 respectively located on the left and right sides of the stroller, a linkage mechanism, and a rear wall bar 42 that is rotatably connected to the front wall bar 41 through a linkage mechanism. The connecting piece for the detachable connection between the rod 42 and the push rod 3, and the support seat 6 arranged on the vehicle frame, and the linkage mechanism is detachably connected with the support seat 6;

As shown in Figure 1-4, the baby stroller is in the use state of the sleeping basket. When it is in the use state of the sleeping basket, the frame is in the unfolded state and the sleeping basket 4 is connected to the frame. The baby stroller also has a sleeping basket and the frame is folded together. state, when the stroller is in the state of using the sleeping basket and the frame of the sleeping basket is folded together, the linkage mechanism is connected with the support seat 6, wherein when the stroller is in the state of using the sleeping basket, the front wall bar 41 and the rear wall bar 42 Expand each other, and the rear wall bar 42 is connected on the push rod 3 through the connecting piece; The frame is closed and folded, and the back wall bar 42 and the push rod 3 are connected or not connected to each other by a connecting piece.

Specifically, when the stroller is folded, turning the push rod 3 backward and downward can drive the rear wall bar 42 to turn backward and downward, and then drive the front wall bar 41 to turn forward and downward through the linkage mechanism. When the folding is completed, The front support 1, the rear support 2, the push rod 3, the front wall bar 41 and the rear wall bar 42 are closed together and folded together.

As shown in Figure 1-2, the sleeping basket 4 also includes a front curved bar whose two ends are respectively fixedly connected to the left and right sides of the front wall bar 41 or integrally formed, and both ends are respectively fixedly connected to the left and right sides of the rear wall bar 42 Or an integrally formed rear arc bar, when the vehicle frame is in the unfolded state, the front wall bar 41 located at the left and right sides of the stroller, the rear wall bar 42 located at the left and right sides of the child stroller, and the rear wall bar 42 located at the left and right sides of the child stroller The linkage mechanism, the front arc bar and the back arc bar form a ring-shaped closed enclosure.

Sleeping basket 4 also comprises the strut bar 44 that is respectively arranged on the front wall bar 41 below and the rear wall bar 42 below, and the canopy frame 45 and the upper end that are arranged on the front wall bar 41 are respectively connected with the front wall bar 41, the back wall bar 42, The sleeping bag 46 connected by the front arc bar and the back arc bar, the sleeping bag 46 can be made of cloth.

In this example, specifically, the connector is a hook, and the hook includes a hanging rod 51, a hook part fixedly connected with one end of the hanging rod 51 or integrally formed; The hook portion is hooked on the bottom of the push rod 3, and when the vehicle frame is in the unfolded state, the hanging rod 51 extends along the up and down direction. In the application process of this example, when the stroller is in the co-folded state of the sleeping basket frame, the hook portion of the hook is disengaged from the push rod 3 , that is, the rear wall bar 42 is temporarily disengaged from the push rod 3 and is not connected.

As shown in FIG. 1 , the hook portion includes a first covering member 521 located inside the vehicle frame and covering the push rod 3 and a second covering member 522 located at the front side of the vehicle frame and covering the push rod 3 , The first covering part 521 and the second covering part 522 are fixedly connected or integrally formed.

In this example, an accommodating cavity is formed on the supporting base 6, and the linkage mechanism is located in the accommodating cavity. The supporting base 6 is also formed with a front wall bar 41 and a rear wall bar 42 arranged on the front and rear sides of the stroller. Can pass through and can rotate the relief part, the front wall rod 41 is connected with the linkage mechanism through the relief part of the front side, and the rear wall rod 42 is connected with the linkage mechanism through the relief part of the rear side, specifically, the support base 6 It includes a first support shell 61 fixedly arranged on the front bracket 1, and a second support shell 62 detachably connected with the first support shell 61. When the first support shell 61 and the second support shell 62 The above-mentioned accommodating cavity is formed when they are connected together. Through this arrangement, when the baby stroller is in the use state of the sleeping basket, the linkage mechanism of the sleeping basket is always connected with the supporting seat 6, and the supporting seat 6 can not only provide a certain supporting effect for the sleeping basket 4, but also utilize the accommodating cavity Cooperating with the step-off part further improves the stability of the sleeping basket 4 in the horizontal direction, prevents or even prevents the sleeping basket 4 from tilting, and when the stroller is in the co-folding state of the sleeping basket frame, the push rod 3 acts through the hook The force on the back wall bar 42 disappears, and the support seat 6 can be used as a support point for the front wall bar 41 and the back wall bar 42 to rotate and has a position-limiting effect to prevent the sleeping basket 4 from moving. Further, when the sleeping basket 4 needs to be disassembled, the first supporting shell 61 and the second supporting shell 62 can be disassembled, and then the sleeping basket 4 can be directly removed, that is, the vehicle frame and the sleeping basket are realized. 4, and then the two can be used separately or folded.

As shown in FIGS. 5-12 , in this example, the linkage mechanism includes a first joint 431 arranged at the rear of the cowl bar 41 , a second joint 432 arranged at the front of the rear bar 42 , a base 433 , and The base 433 is rotatably connected to the rotating shaft 434 and the linkage 435 that is slidably arranged on the base 433 along the up and down direction of the stroller. The first joint 431 and the second joint 432 are rotationally connected around the rotating shaft 434. The first A first arc-shaped groove 4311 is formed on the joint 431, and a second arc-shaped groove 4321 is formed on the second joint 432. The rotation centerline of the first arc-shaped groove 4311 and the rotation centerline of the second arc-shaped groove 4321 are respectively aligned with the rotating shaft. The axis lines of 434 deviate from each other, and the linkage 435 includes a linkage pin 4351 , and the linkage pin 4351 is slidably inserted in the first arc-shaped slot 4311 and the second arc-shaped slot 4321 .

Specifically, the first arc-shaped groove 4311 and the second arc-shaped groove 4321 have a proximal end close to the rotating shaft 434 and a distal end away from the rotating shaft 434 respectively. In the proximal end of the arc-shaped groove 4311 and the proximal end of the second arc-shaped groove 4321, when the vehicle frame is in the folded state, the linkage pin 4351 is slidably inserted in the distal end of the first arc-shaped groove 4311 and the second arc-shaped groove In the far end of 4321.

The linkage member 435 also includes a sliding member 4352 fixedly connected with the linkage pin 4351 or formed integrally. The sliding member 4352 is formed with a sliding slot 43521 extending along the up and down direction of the stroller, and the rotating shaft 434 passes through the sliding slot 43521 . This arrangement can effectively limit the position of the linkage member 435 so that it can only be displaced in the up and down direction, so as to avoid unreasonable deviation and thus cause failure of the linkage function of the linkage mechanism.

The linkage mechanism also includes a self-locking mechanism for relatively locking the front wall bar 41 and the rear wall bar 42. The self-locking mechanism includes a lock pin 4361 that is slidably arranged on the base 433 along the left-right direction of the stroller, and is formed on the second page. The lock pin matching part 4362 on the first joint 431 and/or the second joint 432, the lock pin 4361 cooperates with the lock pin matching part 4362 to realize locking, and the lock pin 4361 is separated from the lock pin matching part 4362 to realize unlocking, and the linkage mechanism also includes A driving component 437 for driving the locking pin 4361 to slide is provided on the base 433 to slide along the up and down direction of the stroller. The setting of the self-locking mechanism and the driving part 437 can realize that when the sleeping basket 4 is placed on the vehicle frame, the movement of the locking pin 4361 driven by the driving part 437 can realize the unlocking of the linkage mechanism, and the linkage effect of the linkage mechanism can be realized. If the linkage action needs to take effect (for example, the sleeping basket 4 is removed), the lock pin 4361 can be reset by canceling the force exerted by the driving part 437 on the lock pin 4361 to realize the self-locking of the linkage mechanism.

In this example, the base 433 is set as a first housing 4331 and a second housing 4332 that are detachably connected to each other, and a limit stop that extends in the same direction as the sliding direction of the slider 4352 is provided on the first housing 4331 The sliding slot 43311 can place the sliding piece 4352 in the limiting sliding slot 43311, so that the positioning of the linkage piece 435 can be better realized, and the unreasonable deviation of it can be prevented from causing the failure of the linkage effect of the linkage mechanism. Through holes for allowing the shaft 434 to pass through are respectively provided on the first housing 4331 and the second housing 4332 , so as to better achieve stability among the components of the linkage mechanism. Wherein, the aforementioned locking pins 4361 are slidably disposed on the first housing 4331 and the second housing 4332 , and the driving component 437 is also slidably disposed on the second housing 4332 .

Working principle and process: when the sleeping basket 4 is used together with the vehicle frame, when it is folded, the push rod 3 is driven to turn backwards and downwards. At this time, the force acting on the rear wall rod 42 through the hook will disappear, and the rear wall rod 42 will It will also turn backwards and downwards under the action of gravity, etc., and then the rotation of the rear wall rod 42 can realize the forward and downward flip of the front wall rod 41 through the action of the linkage mechanism. The common synchronous folding of the basket 4, when changing from the folded state to the unfolded state, the driving push rod 3 is turned forward and upward, rotated to a certain position, the hook and the push rod 3 interact, and the rear wall rod 42 passes through the push rod 3 Under the action of the power transmitted by the hook, the forward and upward turnover occurs, and then the rear wall bar 42 drives the front wall bar 41 to turn backward and upward through the action of the linkage mechanism, and then the couch 4 is jointly and synchronously deployed when the vehicle frame is opened.

To sum up, the children's stroller of the present utility model can realize the co-folding and unfolding of the foldable sleeping basket 4 and the foldable frame, and can also be disassembled when necessary to realize the independent folding and storage of the sleeping basket 4 and the frame Or use, while the structure is relatively simple, easy to operate, which greatly facilitates the use of consumers.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the present utility model and implement it accordingly, and cannot limit the protection scope of the present utility model. Equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (10)

1. A child stroller, comprising a vehicle frame with an unfolded state and a folded state, a locking mechanism for locking the vehicle frame in the unfolded state, a sleeper detachably arranged on the vehicle frame, a front wheel Assembly and rear wheel assembly, the vehicle frame includes side brackets located on the left and right sides of the stroller, the side brackets include push rods, a front bracket with the front wheel assembly at the bottom, and a rear bracket with the rear wheel assembly at the bottom. The rear bracket of the wheel assembly, the baby stroller has a sleeping basket in use state, when in the sleeping basket using state, the vehicle frame is in an unfolded state and the sleeping basket is connected to the vehicle frame, it is characterized in that the The sleeping basket includes a front wall bar located on the left and right sides of the stroller, a linkage mechanism, and a rear wall bar that is rotatably connected to the front wall bar through the linkage mechanism. The baby stroller also includes the a connecting piece detachably connected to the rear wall bar and the push rod, and a support seat arranged on the vehicle frame, and the linkage mechanism is detachably connected to the support seat; The baby stroller also has a co-folding state of the sleeping basket frame. When the baby stroller is in the co-folding state of the sleeping basket and the sleeping basket frame, the linkage mechanism is connected with the support seat, wherein when the When the baby stroller is in the state of using the sleeping basket, the front wall bar and the rear wall bar are mutually extended, and the rear wall bar is connected to the push rod through the connecting piece; when the child pushes When the car is in the co-folding state of the sleeping basket frame, the frame is in the folded state, the front wall bar, the rear wall bar, and the vehicle frame are folded together, and the rear wall bar and the push rod Connected or not connected to each other via the connectors. 2. The children's stroller according to claim 1, wherein when the children's stroller is folded, turning the push rod backwards and downwards can drive the rear wall bar to turn backwards and downwards, and then The cowl bar is driven to turn forward and downward through the linkage mechanism. 3. The children's stroller according to claim 1, wherein the connecting piece is a hook, and the hook includes a hanging rod, a hook part fixedly connected to or integrally formed with one end of the hanging rod, and the hanging rod The other end of the rod is fixedly arranged on one of the two parts of the rear wall rod and the push rod, and the hook is hooked on the other of the two parts of the rear wall rod and the push rod . 4. The children's stroller according to claim 3, wherein the hanging rod is fixedly arranged on the front part of the rear wall rod, and the hook part is hooked on the lower part of the push rod, when the When the vehicle frame is in the unfolded state, the hanging rod extends in the up and down direction. 5. The children's stroller according to claim 3 or 4, wherein the hook portion comprises a first coating located on the inner side of the vehicle frame and coated on the push rod or the rear wall bar A component and a second covering component located at the front side of the vehicle frame and covering the push rod or the rear wall bar, the first covering component and the second covering component are fixedly connected or integrally formed. 6. The children's stroller according to claim 1, characterized in that, an accommodating cavity is formed on the support base, the linkage mechanism is located in the accommodating cavity, and a row is formed on the support base The front and rear sides of the stroller are used to allow the front wall bar and the rear wall bar to pass through and be able to rotate. The front wall bar passes through the front side and the The linkage mechanism is connected, and the rear wall rod is connected with the linkage mechanism through the relief portion on the rear side. 7. The children's stroller according to claim 6, wherein the support seat comprises a first support shell fixedly arranged on the front bracket, and is detachably connected with the first support shell The second supporting shell, the accommodating cavity is formed when the first supporting shell and the second supporting shell are connected together. 8. The children's stroller according to claim 1, wherein the linkage mechanism comprises a first joint arranged at the rear of the cowl bar, a second joint arranged at the front of the rear bar. A joint, a base, a rotating shaft rotatably connected to the base, and a linkage member slidably arranged on the base along the up and down direction of the stroller, the first joint and the second joint rotate around The shafts are rotatably connected together, a first arc-shaped slot is formed on the first joint, a second arc-shaped slot is formed on the second joint, the center line of rotation of the first arc-shaped slot, the The rotation centerlines of the second arc-shaped slots are respectively deviated from the axis lines of the rotating shafts, and the linkage member includes a linkage pin, and the linkage pin is slidably inserted in the first arc-shaped groove and the first arc-shaped groove. In two arc grooves. 9. The stroller according to claim 8, characterized in that, the linkage further comprises a sliding piece which is fixedly connected with the linkage pin or integrally formed, and the sliding piece is formed with a The chute extending in the up and down direction, the rotating shaft passes through the chute. 10. The children's stroller according to claim 8, wherein the linkage mechanism further includes a self-locking mechanism for relatively locking the front wall bar and the rear wall bar, and the self-locking mechanism includes The lock pin that is slidably arranged on the base in the left and right direction of the baby stroller, and the lock pin matching part formed on the first joint and/or the second joint, the lock pin and the lock The pin matching parts cooperate with each other to realize locking, and the lock pin is separated from the locking pin matching part to realize unlocking. The linkage mechanism also optionally includes a A drive component for driving the lock pin to slide.