Baby carriage

Abstract

The utility model provides a baby carriage, which comprises a seat, a carriage frame and a seat steering device, the steering device comprises a base, a steering wheel, a driving device and a driving device, the base is configured to install the seat steering device on the carriage frame; the sliding part is used for allowing the seat to move to a pivoting position along the lateral direction relative to the frame; the seat is arranged on the base, the seat is arranged on one side of the frame in an offset mode and located on the base, and the seat can rotate relative to the frame at the pivot part so as to allow the seat to be arranged to one of a forward position and a backward position relative to the frame. The seat comprises the steering device with a lateral sliding and rotating mechanism, so that the direction of the seat can be flexibly adjusted under the condition that the seat is not detached, the tedious steps of remounting and positioning in the traditional design are avoided, and more convenient operation experience is provided for a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of baby carriage. BACKGROUND

[0002] As an important tool for children's daily travel, baby carriages need to consider safety, comfort and convenience in their design. Modern baby carriages are usually composed of basic components such as front wheels, seats, and push rods. The front wheels are usually equipped with foot pedals to facilitate children's participation in activities during travel; the seat is located in the middle of the baby carriage to provide a comfortable seating space for children; the push rod is located at the rear of the body to facilitate adults to push the baby carriage. With the diversification of user needs, the functional design of baby carriages is also being optimized, with the adjustability of seat orientation becoming an important design direction.

[0003] In the prior art, the design of seat orientation is mainly divided into fixed and adjustable types. Fixed seats usually face a single direction, although the structure is simple, but cannot meet the use requirements in different scenarios. For example, when children need to face adults to enhance interaction, or face forward to observe the surrounding environment, fixed seats cannot be flexibly adapted. Therefore, adjustable seat design gradually becomes the mainstream, allowing the seat to face forward or backward to meet the needs of different use scenarios.

[0004] Some existing baby carriage designs achieve orientation adjustment by disassembling the seat. Although this method can achieve the conversion of seat orientation, the operation process is cumbersome, and users need to manually disassemble and reassemble the seat. This not only increases the user's operation burden, but also may cause parts to be lost or damaged during disassembly. In addition, frequent disassembly and installation of the seat may affect the stability of the connection between the seat and the frame, and there is a certain safety hazard. For users who need to frequently adjust the orientation of the seat, the user experience of this method is poor.

[0005] Another way is to design the whole frame so that the seat can be directly rotated and fixed. This method avoids the trouble of disassembly, but requires a larger frame design to ensure the stability and safety of the seat rotation. However, a larger frame not only increases the overall size and weight of the baby carriage, but also affects the maneuverability and portability of the baby carriage. Especially in the case where the overall design of the frame needs to be compact to improve maneuverability, this method is not suitable. In addition, a larger frame may also increase production costs, leading to an increase in product prices.

[0006] In summary, the prior art has obvious deficiencies in the adjustment of the stroller seat orientation. The disassembly adjustment is simple in structure but inconvenient in operation; the integral rotation adjustment is convenient in operation but difficult to balance the compactness and stability of the stroller frame. Therefore, there is an urgent need for a new solution that can adjust the seat orientation conveniently and quickly while maintaining the compact design of the stroller frame. Such a solution not only improves the user experience but also enhances the maneuverability and portability of the stroller, meeting the demand of modern families for the multi-functionality and high practicality of strollers. Summary of the Invention

[0007] To overcome the deficiencies of the prior art, the present utility model provides a stroller, which comprises a seat, a stroller frame and a seat steering device, the seat is installed on the stroller frame through the seat steering device, the seat steering device is configured to rotate the seat between a forward position facing the front of the stroller frame and a rearward position facing the rear of the stroller frame, and the seat steering device comprises a base configured to be installed on the stroller frame, a sliding part configured to allow the seat to move from one of the forward position and the rearward position to a pivotal position along a lateral direction of the stroller frame, and a pivotal part biased on the base on one side of the stroller frame, the pivotal part is configured to allow the seat to rotate relative to the stroller frame to allow the seat to rotate to one of the forward position and the rearward position.

[0008] According to one aspect of the present utility model, the sliding part comprises a sliding groove, the sliding groove has a first end and a second end, the first end is located at or close to the longitudinal middle plane of the stroller frame, the second end is laterally offset further away from the longitudinal middle plane than the first end, the pivotal part is arranged at the second end of the sliding groove, the pivotal part is formed as a pivotal hole with a diameter greater than the width of the sliding groove, the bottom of the seat is provided with a pivot capable of sliding relative to the sliding part and pivoting relative to the pivotal part, and the pivot is non-detachably installed on the sliding part.

[0009] According to another aspect of the present utility model, the sliding part comprises a first end and a second end, the extension direction of the sliding part is deflected towards the front of the stroller, so that the second end of the sliding part is closer to the front of the stroller than the first end of the sliding part. Preferably, the sliding part is linear, and the angle between the extension direction of the sliding part and the longitudinal direction of the stroller is between 75 degrees and 85 degrees.

[0010] According to another aspect of the present utility model, the seat steering device further comprises a locking device capable of locking the seat steering device relative to the seat at both the forward position and the rearward position, and when the locking device is actuated to be unlocked, the seat steering device can slide along the sliding part.

[0011] According to another aspect of the utility model, the locking device is an elastic locking device, the elastic locking device includes a hook portion, a spring and a button, the spring keeps locking in a natural state, the hook portion is in a locking state, when the button is actuated, the spring is compressed or stretched, the locking state of the hook portion is released, the bottom of the seat is equipped with two recesses suitable for clamping the hook portion, the two recesses are located on both sides of the pivot of the bottom of the seat.

[0012] According to another aspect of the utility model, the seat steering device further includes a first limiting portion and a second limiting portion, the bottom of the seat is equipped with a matching limiting portion, one of the first limiting portion and the second limiting portion is engaged with the matching limiting portion in the sliding process, when the seat is in the forward position on the frame, the first limiting portion cooperates with the matching limiting portion, when the seat is in the rearward position on the frame, the second limiting portion cooperates with the matching limiting portion.

[0013] According to another aspect of the utility model, the first limiting portion includes a first flange on one side of the base, the second limiting portion includes a second flange on the other side of the base, the first flange and the second flange extend parallel to the sliding portion, the matching limiting portion includes a clamping groove arranged on the bottom of the seat, the first flange and the second flange can be clamped and cooperated into the clamping groove in the sliding process.

[0014] According to another aspect of the utility model, the clamping groove is arranged on the front side of the bottom of the seat.

[0015] According to another aspect of the utility model, the frame of the baby carriage includes a cross beam, a front handle portion located in front of the cross beam and a push rod located behind the cross beam, the base of the seat steering device is fixed to the cross beam and is installed between the front handle portion and the push rod, the seat steering device is on the cross beam and is close to the push rod.

[0016] According to another aspect of the utility model, the pivot position of the seat is laterally offset by at least 10cm relative to the forward position or the rearward position.

[0017] The seat according to the utility model includes a steering device with a lateral sliding and rotating mechanism, so that the seat can be flexibly adjusted in direction without disassembly, avoiding the cumbersome steps of reinstallation and positioning in the traditional design, and providing a more convenient operation experience for the user. The seat can be made wider to improve comfort. BRIEF DESCRIPTION OF DRAWINGS

[0018] For a more complete understanding of the present application, reference is made to the following description taken in connection with the accompanying drawings in which:

[0019] Figure 1 A perspective view of a stroller according to a preferred embodiment of the present application is shown, with the seat and frame in a separated condition.

[0020] Figure 2 A top perspective view of a stroller according to a preferred embodiment of the present application is shown, with the seat removed to show the seat steering device mounted on the frame.

[0021] Figure 3 A top view of a stroller according to a preferred embodiment of the present application is shown.

[0022] Figure 4 A perspective view of the bottom of a stroller according to a preferred embodiment of the present application is shown.

[0023] Figure 5 A side view of a seat steering device according to a preferred embodiment of the present application is shown.

[0024] Figure 6 A schematic cross-sectional view of the bottom of a seat and a seat steering device cooperating according to a preferred embodiment of the present application is shown.

[0025] Figures 7A-7D Schematic perspective views of the various stages of a stroller seat steering process according to a preferred embodiment of the present application are shown.

[0026] Figures 8A-8D Schematic views of the seat bottom and seat steering device cooperating structure at various stages of a stroller seat steering process according to a preferred embodiment of the present application are shown.

[0027] List of reference signs

[0028] 1 stroller

[0029] 10 frame

[0030] 11 crossbar

[0031] 12 push rod

[0032] 13 lower support rod

[0033] 14 front handle portion

[0034] 15 rear support rod

[0035] 16 front wheel

[0036] 17 rear wheel

[0037] 18 footrest portion

[0038] 20 seat

[0039] 23 leg rest

[0040] 25 pivot

[0041] 26 recess

[0042] 27 clamping slot

[0043] 30 seat steering device

[0044] 31 base

[0045] 32 sliding portion

[0046] 321 first end

[0047] 322 second end

[0048] 33 pivoting portion

[0049] 34 locking device

[0050] 341 clamping hook portion

[0051] 35 first flange

[0052] 36 second flange DETAILED DESCRIPTION

[0053] The utility model will be further explained in combination with specific embodiments and drawings, more details are set forth in the following description in order to fully understand the utility model, but the utility model can obviously be implemented in many other ways different from this description, and the person skilled in the art can make similar generalization, deduction according to actual application condition without violating the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of this specific embodiment.

[0054] In the following description, "front" generally refers to the direction in which the stroller advances in a straight line; "rear" generally refers to the direction opposite to "front"; "longitudinal direction" generally refers to the front-rear direction of the stroller; and "lateral direction" refers to the direction transverse to the longitudinal direction, and is not limited to be in a perpendicular relationship unless otherwise specified.

[0055] According to the preferred embodiment of the present application, the stroller 1 mainly comprises a frame 10 and a seat 20. The main body of the frame 10 adopts a triangular main frame structure design to ensure the stability of the frame 10. The frame 10 mainly comprises a cross beam 11, a lower support rod 13 and a rear support rod 15. The cross beam 11 and the lower support rod 13 are arranged in an up-down manner, and the lower support rod 13 and the cross beam 11 both extend along the longitudinal direction of the frame 10. The front ends of the lower support rod 13 and the cross beam 11 are provided with a steerable front wheel 16 and a front handle portion 14 through a front fork portion. The pivot shaft of the front wheel 16 is connected with a pedal portion 18 for use when a child rides. A push rod 12 is arranged at the rear end of the lower support rod 13 and the cross beam 11 and extends upwardly and obliquely. The push rod 12 is preferably of a telescopic structure, and a rear handle portion is arranged at the top of the push rod 12, which is usually used for being manipulated by a person taking care of a child, and is convenient for holding to push the stroller 1. In addition, the rear support rod 15 of the frame 10 is arranged in pairs, and the rear support rod 15 extends from the rear end of the lower support rod 13 and the cross beam 11 to the outside of the rear. A pair of rear wheels 17 are arranged on the rear end portion of the rear support rod 15. The entire frame 20 is symmetrically arranged about the longitudinal middle plane of the frame, and the cross beam 11 and the lower support rod 13 are substantially located on the longitudinal middle plane.

[0056] The seat 20 of the stroller 1 is arranged between the front handle portion 14 and the push rod 12 and is mounted on the cross beam 11 of the frame 10 through a seat steering device 30. As shown in Figure 1 , the seat 20 preferably comprises a backrest portion, a seat portion and two leg supporting portions 23. The two leg supporting portions 23 are detachably mounted on the arc-shaped front edge of the seat portion through a quick release structure such as a clamping structure. In the use state, the two leg supporting portions 23 are arranged on the two sides of the cross beam 11 and the lower support rod 13. In addition, the seat 20 preferably further comprises a detachable or rotatable fence.

[0057] According to the present application, the seat steering device 30 of the stroller 1 not only provides a mounting structure between the seat 20 and the frame 10, but also gives the seat 20 the ability to flexibly rotate between a forward position (as shown in Figure 7A ) and a rearward position (as shown in Figure 7D ). In this article, the "forward position" is that the seat 20 faces the front of the frame 10, and the "rearward position" is a position rotated 180 degrees relative to the "forward position", at which time the seat 20 faces away from the front of the frame 10. The flexible rotation of the seat 20 between the forward position and the rearward position can meet the use requirements of the stroller 1 in different scenes.

[0058] In the preferred embodiment, the seat steering device 30 mainly comprises a base 31 for fixing the seat steering device 30 to the frame 10, a sliding portion 32 for providing lateral sliding of the seat 20 and a pivoting portion 33 for providing forward and rearward rotation of the seat 20.

[0059] The base 31 of the seat turning device 30 comprises a mounting portion at the bottom of the seat turning device 30 for firmly fixing the whole turning device 30 on the cross beam 11 of the vehicle frame 10. The mounting portion preferably has a shape matching the outer profile shape of the cross beam 11, and the base 31 is detachably mounted on the cross beam 11 of the vehicle frame 10 by means of a gasket and fasteners.

[0060] The sliding portion 32 of the seat turning device 30 allows the seat 20 to move in the lateral direction of the vehicle frame 10 until the seat 20 reaches the pivotal position (as shown in Figure 7B and Figure 7C In other words, the pivotal position in the present application is laterally offset from the forward position or the rearward position by a distance, and the seat 20 can be laterally moved between the pivotal position and the forward position or between the pivotal position and the rearward position by means of the sliding portion 32.

[0061] In the preferred embodiment, the sliding portion 32 of the seat turning device 30 is formed by a sliding groove formed in the base 31 of the seat turning device 30. The sliding groove preferably has a straight line shape and extends in the lateral direction of the vehicle frame 10. The sliding groove has a first end 321 and a second end 322, and the seat 20 can reciprocally slide between the first end 321 and the second end 322. As shown in Figure 3 The first end 321 of the sliding groove can be located at the longitudinal middle plane of the vehicle frame 10, and more specifically, the first end 321 of the sliding groove can be located directly above the cross beam 11, and the first end 321 of the sliding groove provides the forward position and the rearward position of the seat 20. The second end 322 of the sliding groove is offset to one side in the lateral direction of the vehicle frame 10 and away from the longitudinal middle plane. Here, the longitudinal middle plane generally refers to the middle position along the cross beam. The pivotal portion 33 is arranged at the second end 322 of the sliding groove, and thus the second end 322 of the sliding groove provides the pivotal position of the seat 20.

[0062] As shown in Figure 3 In the preferred embodiment, the pivotal portion 33 at the second end of the sliding groove is configured as a pivotal hole, and the diameter of the pivotal hole is greater than the width of the rest of the sliding groove. Corresponding to the structure of the sliding groove and the pivotal hole, the bottom of the seat 20 is provided with a pivotal shaft 25 that can slide relative to the sliding groove and pivot relative to the pivotal hole, as shown in Figure 4When the pivot 25 is at the first end 321 of the slide, the rotation of the pivot 25 relative to the slide is limited and only lateral sliding along the slide is possible. When the pivot 25 slides to the second end 322 of the slide, the pivot 25 enters the pivot hole, allowing the pivot 25 to rotate. This design allows the seat 20 to slide laterally out of the area between the push bar 12 and the front handle portion 14, and to switch between the forward position and the rearward position in the pivot position biased to one side of the frame 10. In this way, the distance between the push bar 12 and the front handle portion 14 in the longitudinal direction can be reduced, facilitating the operation of the footrest by children, or a larger seat 20 can be installed, thereby improving the comfort of the seat.

[0063] In the present application, the pivot 25 at the bottom of the seat 20 is non-detachably mounted to the sliding portion 32. In other words, after the pivot 25 is mounted relative to the slide, the seat 20 and the seat rotating device 30 always remain in a connected relationship, and the seat 20 can slide along the slide, but cannot be detached from the seat rotating device. For example, the pivot 25 is inserted into the slide, and the bottom end of the pivot 25 can extend out of the slide and be mounted with a stop block by a fastener, thereby keeping the pivot 25 from being detached from the slide.

[0064] As shown in Figure 3 , the mounting position of the seat rotating device 30 on the cross beam 11 is closer to the push bar 12, and a space is left between the seat rotating device 30 and the front end of the cross beam 11. In a preferred embodiment, the slide extends in a straight line. The extension direction of the slide is deflected towards the front of the stroller 1, so that the second end 322 of the slide is closer to the front of the stroller than the first end 321 of the slide. The angle between the extension direction of the slide and the longitudinal direction of the frame 10 of the stroller 1 is not perpendicular, but at an angle a, which is preferably between 75-85 degrees, and preferably 80 degrees.

[0065] In an alternative embodiment, the slide can be arcuately deflected towards the front of the stroller 1, so that the second end 322 of the slide is closer to the front of the stroller than the first end 321 of the slide. In another alternative embodiment, the sliding portion 32 can be formed by two straight-line slides in different directions, including a first segment of the slide extending in the longitudinal direction and a second segment of the slide extending in the lateral direction.

[0066] In addition, as shown in Figure 5 and Figure 6 , the seat rotating device 30 further comprises a locking device 34, which can lock the seat 20 on the seat rotating device 30 in both the forward position and the rearward position.

[0067] In the preferred embodiment, the locking device 34 is a resilient locking device which utilizes the elasticity of a spring to achieve the locking and unlocking functions of the locking device 34, and is capable of achieving quick locking and releasing of the seat 20. Specifically, the resilient locking device can include a hook portion 341, a spring, a button and a fixing base. The hook portion 341 is generally designed as a hook-like or protruding structure for fitting into the recess 26 or other matching structure on the bottom of the seat 20 to achieve the locking function. The shape of the hook portion 341 is optimized to ensure that it can firmly secure the recess 26 of the seat 20 in the locked state, as shown in Figure 6 , while easily disengaging in the unlocked state. The spring provides the hook portion 341 with an elastic force, which keeps the hook portion 341 in the locked state in the natural state. When unlocking is required, the spring is compressed or stretched by pressing or actuating the button with an external force, thereby releasing the locked state of the hook portion 341. Preferably, the button is arranged on the side of the seat swivel device 30 for easy operation by the user.

[0068] As can be seen from Figure 4 , the bottom of the seat 20 is provided with two recesses 26 adapted to be engaged by the hook portion 341 of the locking device 34, which are arranged on both sides of the pivot 25 of the bottom of the seat 20 and cooperate with the hook portion 341 when the seat 20 is in the forward position and the rearward position, respectively.

[0069] In addition to the locking device 34, the seat swivel device 30 also includes a first limiting portion and a second limiting portion, and the bottom of the seat 20 is provided with matching limiting portions which engage the first limiting portion and the second limiting portion during sliding. When the seat 20 slides relative to the frame 10 into the forward position, the first limiting portion cooperates with the matching limiting portion; when the seat 20 slides relative to the frame 10 into the rearward position, the second limiting portion cooperates with the matching limiting portion.

[0070] In the preferred embodiment, as shown in Figures 8A-8D , the seat swivel device 30 includes a wider portion and a narrower portion, wherein the first limiting portion is a first flange 35 located on one side of the wider portion of the base 31, and the second limiting portion is a second flange 36 located on the opposite side of the wider portion of the base 31, and the first flange 35 and the second flange 36 are arranged on both sides of the sliding portion 32, preferably parallel to the extension of the sliding portion 32. The matching limiting portions of the seat 20 include a clamping groove 27 located on the front side of the bottom of the seat 20. The first flange 35 and the second flange 36 are engaged and fitted into the clamping groove 27 during sliding, thereby respectively playing a role of auxiliary guiding during the seat 20 entering the forward position and the rearward position, and playing a role of controlling the gap between the bottom of the seat 20 and the cross beam 11 when the seat 20 reaches the forward position and the rearward position.

[0071] Next, with reference to the accompanying Figures 7A-7D andFigures 8A-8D The turning operation of the seat 20 of the stroller 1 according to the present application is described.

[0072] Figure 7A The seat 20 is shown locked in its forward position, i.e. when a child is seated in the stroller 1, facing forward, at this time the leg rest 23 of the seat 20 has been removed. Figure 8A The seat 20 is shown in the forward position, the pivot 25 of the seat 20 bottom is located at the first end of the sliding part, and the first flange 35 cooperates with the clamping groove 27 of the seat 20 bottom. In order to rotate the seat 20, the user presses the button of the locking device 34 on the side of the seat turning device 30 to unlock the seat turning device 30 relative to the seat 20, and the user slides the seat 20 along the sliding part 32 in the lateral direction, during the sliding process, the seat 20 is basically kept in the forward direction.

[0073] As shown in Figure 7B , the seat 20 has been laterally offset to the outside relative to the frame 10, as shown in Figure 8B , at this time the pivot 25 of the seat 20 bottom has moved to the pivot part 33, and the first flange 35 has been disengaged from the cooperation with the clamping groove 27. At this time, the user can rotate the seat 20 relative to the frame 10 to enter the state as shown in Figure 7C .

[0074] As shown in Figure 7C , the seat 20 has been rotated by 180 degrees, as shown in Figure 8C , the clamping groove 27 of the seat 20 bottom has been rotated to the side where the second flange 36 is located. Then, the seat 20 is moved again to the inside along the sliding part 32, so that the seat 20 returns to the state of being centered with the frame 10, as shown in Figure 7D , the seat 20 reaches the rearward position. At this time, as shown in Figure 8D , the hook part 341 of the locking device 34 is clamped with the other recess 26 of the seat 20 bottom, and the second flange 36 cooperates with the clamping groove 27, at this time the seat 20 is locked and cannot be moved. After the seat 20 is turned, the leg rest 23 can be installed on the seat 20 as needed.

[0075] Preferably, as shown in Figure 3 , the pivot position of the seat 20 is laterally offset relative to the forward position or the rearward position by a distance of at least 10 cm to the frame 10. In other words, the distance L between the first end 321 and the second end 322 of the sliding part 32 on the seat turning device 30 is at least 10 cm.

[0076] The seat turning device 30 of the stroller 1 of the present application adopts the design of combining the sliding part 32 with the pivot part 33, successfully realizing the function of installing a rotatable seat on a compact frame, greatly improving the practicability and convenience of the stroller 1.

[0077] The lateral sliding and rotating mechanism of the seat 20 enables flexible adjustment of the direction of the seat without disassembly, avoiding the cumbersome steps of reinstallation and positioning in traditional designs, and providing a more convenient operation experience for the user.

[0078] In addition, the locking device and the limiting structure of the present application further improve the stability and safety of the seat. Whether in the forward position or the rearward position, the locking device can ensure reliable locking of the seat to prevent accidental movement of the seat during use. The limiting structure of the double-sided flange and the clamping groove ensures that the seat and the frame always maintain a predetermined gap, avoiding the problems of jamming or friction caused by a gap that is too large or too small, while providing auxiliary guidance during sliding to ensure the accuracy of the sliding direction.

[0079] Although the present application is disclosed in the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, any modification, equivalent change and modification made to the above embodiments in accordance with the technical essence of the present application, which does not deviate from the technical solutions of the present application, falls within the protection scope defined by the claims of the present application.

Claims

1. A stroller comprising a seat (20), a frame (10) and a seat steering device (30), the seat being mounted on the frame by the seat steering device, the seat steering device being configured to rotate the seat between a forward position facing forward of the frame and a rearward position facing rearward of the frame, characterized in that the seat steering device comprising: a base (31) configured to be mounted to the frame; a sliding portion (32) configured to allow the seat to move along a lateral direction of the frame from one of the forward position and the rearward position to a pivotal position; and a pivotal portion (33) disposed on the base and offset to one side of the frame, the pivotal portion being configured to allow rotation of the seat relative to the frame to allow the seat to rotate to one of the forward position and the rearward position.

2. The stroller of claim 1, wherein, the sliding portion comprises a sliding slot having a first end (321) and a second end (322), the first end being located at or near a longitudinal midplane of the frame, the second end being laterally offset from the longitudinal midplane compared to the first end, the pivotal portion is disposed at the second end of the sliding slot, the pivotal portion being formed as a pivotal hole having a diameter greater than a width of the sliding slot, a bottom of the seat (20) is provided with a pivot (25) slidable relative to the sliding portion and pivotable relative to the pivotal portion, the pivot is non-detachably mounted to the sliding portion.

3. The stroller of claim 1, wherein, the sliding portion comprises a first end and a second end, an extension direction of the sliding portion being deflected toward a front of the stroller such that the second end of the sliding portion is closer to the front of the stroller than the first end of the sliding portion, the sliding portion is linear, an angle between the extension direction of the sliding portion and a longitudinal direction of the stroller being between 75 degrees and 85 degrees.

4. The stroller of claim 1, wherein the seat steering device further comprises a locking device capable of limiting the seat steering device relative to the seat in both the forward position and the rearward position, the seat steering device being slidable along the sliding portion when the locking device is actuated to be unlocked.

5. The stroller of claim 4, wherein, the locking device is a resilient locking device, the resilient locking device comprising a hook portion, a spring and a button, the spring being kept in a locked state in a natural state, the hook portion being in a locked state, the spring being compressed or stretched and the locked state of the hook portion being released when the button is actuated; a bottom of the seat is provided with two recesses adapted to be engaged by the hook portion, the two recesses being disposed on two sides of the pivot at the bottom of the seat.

6. The stroller of claim 1, wherein the seat steering device further comprises a first limiting portion and a second limiting portion, a bottom of the seat being provided with a matching limiting portion, one of the first limiting portion and the second limiting portion being engaged with the matching limiting portion during sliding, the first limiting portion cooperates with the matching limiting portion when the seat is in the forward position on the frame; the second limiting portion cooperates with the matching limiting portion when the seat is in the rearward position on the frame.

7. The stroller of claim 6, wherein The first limiting part comprises a first flange (35) on one side of the base, and the second limiting part comprises a second flange (36) on the other side of the base; The matching limiting part comprises a clamping groove (27) arranged on the bottom of the seat; The first flange and the second flange can be clamped into the clamping groove during sliding.

8. The stroller of claim 6, wherein, The matching limiting part is arranged on the front side of the bottom of the seat, And the first limiting part and the second limiting part extend parallel to the sliding part.

9. The stroller of claim 1, wherein, The frame of the stroller comprises a crossbeam (11), a front handle part (14) in front of the crossbeam, and a push rod (12) behind the crossbeam, The base of the seat turning device is fixed to the crossbeam and is installed between the front handle part and the push rod; the seat turning device is above the crossbeam and close to the push rod, The stroller further comprises a steerable front wheel and a footrest part for driving the front wheel.

10. The stroller of claim 1, wherein, The lateral offset distance between the pivotal position of the seat and the forward position or the backward position is at least 10 cm.

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