Wheel structure and baby carriage

Abstract

The utility model relates to the technical field of wheels, in particular to a wheel structure and a baby carriage. The baby carriage comprises a frame, a wheel structure is arranged on the frame, the wheel structure comprises a support, a wheel and a brake mechanism, a plurality of brake grooves are formed in the wheel, and the brake grooves are distributed in an array mode in the circumferential direction of a hinge shaft of the wheel and the support; the brake mechanism comprises a pull rope, a brake module, a transmission assembly connecting the pull rope and the brake module and a reset assembly connected with the transmission assembly, the brake module is hinged to the support and provided with a linkage end and a brake end, the linkage end of the brake module is connected with the transmission assembly, and the brake end of the brake module is provided with a brake rod capable of being matched with the brake groove; when the pull rope is pulled, the transmission assembly moves to drive the brake module to rotate and drive the brake rod to enter the brake groove. When the pull rope is loosened, the reset assembly drives the transmission assembly to move reversely, the brake module is driven to rotate reversely, the brake rod is driven to retreat from the brake groove, and use is quite convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheel technical field, concretely a kind of wheel structure and baby carriage. BACKGROUND

[0002] Baby carriage generally includes frame and the wheel on the bottom of frame, brake mechanism is equipped on wheel, user can brake baby carriage by brake mechanism when needing to stop during pushing child to walk, when needing to brake baby carriage in existing baby carriage, user needs to step down brake pad, the frictional force between brake pad and wheel is used to limit wheel rotation, when needing to release brake, user needs to pick up foot back or bend waist and manually operate brake pad, so that brake pad is separated from wheel, to make wheel can rotate, it is more troublesome to use. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of wheel structure and baby carriage, solve the problem of using trouble caused by the difficult posture such as needing to step down brake pad by foot when braking the wheel of existing wheel, needing to pick up foot back or bend waist and manually operate brake pad when releasing brake.

[0004] To solve the above problems, the utility model provides technical scheme as follows:

[0005] A kind of wheel structure, including support, wheel being hinged with the support, and brake mechanism being cooperated with the wheel, the wheel is equipped with several brake grooves, and several brake grooves are arranged along the circumferential direction of the hinge shaft of the wheel and the support;The brake mechanism includes pull rope, brake module, transmission assembly connecting the pull rope and the brake module, reset component being connected with the transmission assembly, the brake module is hinged with the support, the brake module has linkage end and brake end, the linkage end of the brake module is connected with the transmission assembly, and the brake end of the brake module is equipped with brake rod that can be cooperated with the brake groove;When pulling the pull rope, the transmission assembly moves, drives the brake module to rotate, and drives the brake rod to enter the brake groove, to limit the rotation of the wheel;When the pull rope is loosened, the reset component drives the transmission assembly to move reversely, drives the brake module to rotate reversely, and drives the brake rod to exit the brake groove, to release the restriction to the wheel.

[0006] As described above, a kind of wheel structure, the hinge shaft of the brake module and the support is parallel to the hinge shaft of the wheel and the support, when the brake module rotates, the brake rod moves into the brake groove along the radial inner side of the wheel towards the radial outer side of the wheel or along the radial outer side of the wheel towards the radial inner side of the wheel.

[0007] A wheel structure as described above, wherein the wheel is provided with a ring groove in communication with a plurality of brake grooves, the ring groove is located at the inner radial side of the wheel, and the brake grooves are located at the outer radial side of the wheel, the brake module drives the brake lever to enter the brake groove from the ring groove when rotating, and drives the brake lever to enter the ring groove from the brake groove when reversely rotating.

[0008] A wheel structure as described above, wherein the brake end of the brake module is provided with a first limiting hole, the brake lever is movably arranged in the first limiting hole, the first limiting hole has a first movable end and a second movable end, the brake module is provided with a first elastic member matched with the brake lever, and the first elastic member has a tendency to drive the brake lever to be maintained at the first movable end.

[0009] A wheel structure as described above, wherein the bracket is provided with a movable connecting groove and a movable limiting hole in communication with the movable connecting groove, the linkage end of the brake module is provided with a second limiting hole, the transmission assembly comprises a transmission lever and a linkage lever which are perpendicular to each other and arranged in sequence, the transmission lever is movably arranged in the movable connecting groove and connected with the pull rope, one end of the linkage lever is movably arranged in the movable connecting groove, and the other end passes through the movable limiting hole and is matched with the second limiting hole, when the pull rope is pulled, the transmission lever and the linkage lever move upward or downward along the movable connecting groove to drive the brake module to rotate.

[0010] A wheel structure as described above, wherein the transmission assembly comprises a first mounting module, a second mounting module and a pull rope guide, the first mounting module is arranged above the transmission lever and connected with the transmission lever and the pull rope, the second mounting module is arranged below the transmission lever and connected with the linkage lever, and the pull rope guide is arranged below the connection between the pull rope and the first mounting module, when the pull rope is pulled, the transmission lever and the linkage lever move downward to drive the linkage end of the brake module to rotate downward, and the brake end of the brake module to rotate upward.

[0011] A wheel structure as described above, wherein the reset assembly comprises a first reset member arranged between the second mounting module and the movable connecting groove.

[0012] A wheel structure as described above, wherein the bracket is provided with a guide groove parallel to the movable connecting groove, the first mounting module is provided with a guide block matched with the guide groove, and the reset assembly comprises a second reset member arranged between the guide block and the guide groove.

[0013] The wheel structure as described above, the support comprises a fixed seat and a rotating seat, the rotating seat is coaxially connected with the fixed seat, and the rotating seat can rotate relative to the fixed seat, the brake module and the wheel are hinged with the rotating seat.

[0014] A baby carriage comprising a frame, wherein the frame is provided with a wheel structure as described above.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1、 the utility model provides a wheel structure and baby carriage, when needing to brake, the brake can be realized by pulling the pull rope, when needing to release the brake, the brake can be released by loosening the pull rope, it is not necessary to adopt the difficult posture such as foot back and bent waist, and it is very convenient to use.

[0017] 2、 the utility model provides a wheel structure and baby carriage, the brake module and the wheel can rotate with the rotating seat, no matter the wheel rotates to which angle of 360 degrees, the brake mechanism can realize the brake to the wheel, and it is favorable to improve user experience. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a structure schematic view of the wheel structure of the utility model embodiment.

[0020] Figure 2 It is an exploded view of the wheel structure of the utility model embodiment.

[0021] Figure 3 It is a sectional view of the wheel structure of the utility model embodiment in the state of loosening the pull rope.

[0022] Figure 4 It is a sectional view of the wheel structure of the utility model embodiment in the state of pulling the pull rope.

[0023] Figure 5 It is a partial structure exploded view of the wheel structure of the utility model embodiment.

[0024] Among them, the corresponding number of the sign is as follows:

[0025] 1, support; 101, movable connection groove; 102, movable limiting hole; 103, guide groove; 11, fixed seat; 12, rotating seat; 2, wheel; 21, brake groove; 22, ring groove; 31, pull rope; 32, brake module; 321, first limiting hole; 322, second limiting hole; 33, brake lever; 34, first elastic member; 35, transmission assembly; 351, transmission lever; 352, linkage lever; 353, first mounting module; 3531, guide block; 354, second mounting module; 355, pull rope guide; 36, reset assembly; 361, first reset member; 362, second reset member. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to the drawings in the embodiments of the utility model Figure 1 to the drawings in the embodiments of the utility model Figure 5 , the embodiment provides a wheel structure, it includes support 1, with the support 1 hinged wheel 2, and with the wheel 2 cooperation brake mechanism, the wheel 2 is equipped with a plurality of brake grooves 21, a plurality of brake grooves 21 along the circumferential array arrangement of the hinge shaft of the wheel 2 and the support 1;The brake mechanism includes pull rope 31, brake module 32, transmission assembly 35 connected with the pull rope 31 and the brake module 32, reset assembly 36 connected with the transmission assembly 35, the brake module 32 is hinged with the support 1, the brake module 32 has linkage end and brake end, the linkage end of the brake module 32 is connected with the transmission assembly 35, the brake end of the brake module 32 is equipped with brake lever 33 that can cooperate with the brake groove 21;When pulling the pull rope 31, the transmission assembly 35 moves, drives the brake module 32 to rotate, and drives the brake lever 33 to enter the brake groove 21, to restrict the wheel 2 rotation;When the pull rope 31 is loosened, the reset assembly 36 drives the transmission assembly 35 to move reversely, drives the brake module 32 to rotate reversely, and drives the brake lever 33 to exit the brake groove 21, to remove the restriction of the wheel 2.

[0028] The pull rope 31 can extend to a suitable position of the frame, and a corresponding sliding block or handle or other operation structure capable of pulling the pull rope 31 can be arranged, so as to facilitate the user to pull the pull rope 31. The wheel structure provided by the embodiment can realize braking by pulling the pull rope 31, and can release the braking by releasing the pull rope 31, without the need to adopt a difficult posture such as lifting the foot or bending the waist, and is very convenient to use.

[0029] In some embodiments, the brake module 32 is perpendicular to the hinge shaft of the support 1 and the wheel 2, and when the brake module 32 rotates, the brake rod 33 moves along the axial direction of the wheel 2 into the brake groove 21. This embodiment has a simple structure, but when the brake rod 33 moves along the axial direction of the wheel 2, an axial force is inevitably generated on the wheel 2. If the wheel 2 is affected by the force for a long time, the stability of the hinge structure of the wheel 2 and the support 1 will be affected.

[0030] Further, in order to improve the stability and adaptability of the structure, the brake module 32 is parallel to the hinge shaft of the support 1 and the wheel 2, and when the brake module 32 rotates, the brake rod 33 moves along the radial direction of the wheel 2 from the inside to the outside or from the outside to the inside into the brake groove 21. In this embodiment, the brake rod 33 moves from the inside to the outside or from the outside to the inside along the radial direction of the wheel 2, and no axial force is generated on the wheel 2, which is beneficial to maintaining the stability of the hinge structure of the wheel 2 and the support 1, and is also beneficial to maintaining the stability of the hinge structure of the brake module 32 and the support 1.

[0031] Further, in order to improve the stability of the structure, the wheel 2 is provided with a ring groove 22 in communication with a plurality of brake grooves 21, the ring groove 22 is located on the radial inside of the wheel 2, and a plurality of brake grooves 21 are located on the radial outside of the wheel 2. When the brake module 32 rotates, the brake rod 33 is driven from the ring groove 22 into the brake groove 21, and when the brake module 32 reversely rotates, the brake rod 33 is driven from the brake groove 21 into the ring groove 22. When the wheel 2 normally rotates, the brake rod 33 is located in the ring groove 22, effectively avoiding interference with the rotation of the wheel 2, and when the wheel 2 brakes, the brake rod 33 is located in the brake groove 21, effectively limiting the rotation of the wheel 2.

[0032] Further, the brake end of the brake module 32 is provided with a first limiting hole 321, the brake lever 33 is movably arranged in the first limiting hole 321, the first limiting hole 321 has a first movable end and a second movable end, the brake module 32 is provided with a first elastic member 34 matched with the brake lever 33, the first elastic member 34 has a tendency to drive the brake lever 33 to maintain at the first movable end. The first elastic member 34 of the embodiment is a torsion spring. When the pull rope 31 is pulled, the transmission assembly 35 moves, driving the brake module 32 to rotate, at this time the brake lever 33 enters the brake groove 21 under the driving of the brake module 32, the brake lever 33 can move from the first movable end to the second movable end of the first limiting hole 321, the first elastic member 34 has a tendency to drive the brake lever 33 to return to the first movable end; when the pull rope 31 is released, the transmission assembly 35 moves reversely, driving the brake module 32 to rotate reversely, at this time the brake lever 33 exits the brake groove 21 under the driving of the brake module 32, the first elastic member 34 pushes the brake lever 33 to move from the second movable end to the first movable end of the first limiting hole 321. Through the cooperation of the first elastic member 34 and the first limiting hole 321, an elastic connection structure is formed between the brake lever 33 and the brake module 32, compared with rigid connection, the elastic connection structure can absorb the impact and vibration in the mechanical system, reduce the wear of mechanical parts, and prolong the service life.

[0033] Further, the support 1 is provided with a movable connection groove 101 and a movable limiting hole 102 communicated with the movable connection groove 101, the linkage end of the brake module 32 is provided with a second limiting hole 322, the transmission assembly 35 includes a transmission rod 351 and a linkage rod 352 which are perpendicular to each other and arranged in sequence, the transmission rod 351 is movably arranged in the movable connection groove 101 and connected with the pull rope 31, one end of the linkage rod 352 is movably arranged in the movable connection groove 101, the other end passes through the movable limiting hole 102 and matches with the second limiting hole 322, when the pull rope 31 is pulled, the transmission rod 351 and the linkage rod 352 move upward or downward along the movable connection groove 101 to drive the brake module 32 to rotate. The second limiting hole 322 of the embodiment is an arc-shaped hole, through the movable limiting hole 102 and the second limiting hole 322, the movement stroke of the linkage rod 352 can be effectively limited, the rotation angle of the brake module 32 is limited, and the movement distance of the brake lever 33 is limited, so that the brake lever 33 can move between the annular groove 22 and the brake groove 21.

[0034] Further, the transmission assembly 35 comprises a first mounting module 353, a second mounting module 354 and a pull rope guide 355. The first mounting module 353 is arranged above the transmission rod 351 and connected with the transmission rod 351 and the pull rope 31. The second mounting module 354 is arranged below the transmission rod 351 and connected with the linkage rod 352. The pull rope guide 355 is arranged below the connection between the pull rope 31 and the first mounting module 353. When the pull rope 31 is pulled, the transmission rod 351 and the linkage rod 352 move downward to drive the linkage end of the brake module 32 to rotate downward and the brake end of the brake module 32 to rotate upward, thereby driving the brake rod 33 to enter the brake groove 21. The first mounting module 353, the second mounting module 354 and the transmission rod 351 can be integrally formed or detachably connected. The second mounting module 354 is provided with a mounting hole, and the linkage rod 352 is arranged in the mounting hole.

[0035] Further, the reset assembly 36 comprises a first reset member 361 arranged between the second mounting module 354 and the movable connection groove 101. The first reset member 361 in the embodiment is a spring. When the pull rope 31 is pulled, the transmission rod 351, the linkage rod 352, the first mounting module 353 and the second mounting module 354 move downward synchronously to compress the spring. At this time, the first reset member 361 has a tendency to drive the transmission rod 351, the linkage rod 352, the first mounting module 353 and the second mounting module 354 to move upward to reset. At the same time, the linkage rod 352 drives the brake module 32 to rotate and drives the brake rod 33 to enter the brake groove 21 to restrict the rotation of the wheel 2. When the pull rope 31 is released, the first reset member 361 drives the transmission rod 351, the linkage rod 352, the first mounting module 353 and the second mounting module 354 to move upward to reset, thereby driving the brake module 32 to rotate reversely and driving the brake rod 33 to exit the brake groove 21 to release the restriction on the wheel 2. The structure is simple, reliable and reasonable.

[0036] Further, the support 1 is provided with a guide slot 103 parallel to the movable connection slot 101, the first installation module 353 is provided with a guide block 3531 matched with the guide slot 103, and the reset assembly 36 comprises a second reset member 362 arranged between the guide block 3531 and the guide slot 103. The second reset member 362 in the embodiment is a spring. When the pull rope 31 is pulled, the transmission rod 351, the linkage rod 352, the first installation module 353 and the second installation module 354 move downward synchronously, at this time, the second reset member 362 has a tendency to reset the first installation module 353 to move upward. When the pull rope 31 is released, the first reset member 361 drives the first installation module 353 to move upward for resetting. Through the cooperation of the second reset member 362 and the guide slot 103, the stability of the movement of the transmission rod 351, the linkage rod 352, the first installation module 353 and the second installation module 354 can be effectively improved.

[0037] Further, in order to improve the applicability of the structure, the support 1 comprises a fixed seat 11 and a rotating seat 12, the rotating seat 12 is coaxially connected with the fixed seat 11, and the rotating seat 12 can rotate relative to the fixed seat 11, and the brake module 32 and the wheel 2 are hingedly connected with the rotating seat 12. The fixed seat 11 can be fixedly connected with a frame, the movable connection slot 101 is arranged along the rotation axis of the rotating seat 12, one end of the transmission rod 351 is arranged in the movable connection slot 101 of the fixed seat 11 and sleeved with the first installation module 353, the other end of the transmission rod 351 is arranged in the movable connection slot 101 of the rotating seat 12, and the transmission rod 351 can rotate relative to the first installation module 353 or rotate relative to the movable connection slot 101; the linkage rod 352 and the second installation module 354 are movably arranged in the movable connection slot 101 of the rotating seat 12, the pull rope guide 355 is fixedly arranged on the fixed seat 11, and when the rotating seat 12 rotates, the second installation module 354, the linkage rod 352, the brake module 32, the brake rod 33, the first elastic member 34 and the wheel 2 rotate together. No matter at which angle the wheel 2 rotates within 360 degrees, the brake mechanism can brake the wheel, which is beneficial to improve the user experience.

[0038] The embodiment also provides a baby carriage, which comprises a frame, and a wheel structure arranged on the frame, wherein the wheel structure comprises a support 1, a wheel 2 hinged to the support 1, and a brake mechanism matched with the wheel 2, the wheel 2 is provided with a plurality of brake grooves 21, and the brake grooves 21 are arranged in a circumferential array along a hinge shaft of the wheel 2 and the support 1; the brake mechanism comprises a pull rope 31, a brake module 32, a transmission assembly 35 connecting the pull rope 31 and the brake module 32, and a reset assembly 36 connected with the transmission assembly 35, the brake module 32 is hinged to the support 1, the brake module 32 has a linkage end and a brake end, the linkage end of the brake module 32 is connected with the transmission assembly 35, and the brake end of the brake module 32 is provided with a brake rod 33 matched with the brake grooves 21; when the pull rope 31 is pulled, the transmission assembly 35 moves, drives the brake module 32 to rotate, and drives the brake rod 33 to enter the brake grooves 21, so as to restrict the rotation of the wheel 2; when the pull rope 31 is released, the reset assembly 36 drives the transmission assembly 35 to move reversely, drives the brake module 32 to rotate reversely, and drives the brake rod 33 to exit the brake grooves 21, so as to release the restriction on the wheel 2. The baby carriage provided by the embodiment can realize braking by pulling the pull rope 31 when braking is needed, and can release the braking by releasing the pull rope 31 when the braking is needed to be released, without adopting difficult postures such as lifting the instep or bending the waist, and is very convenient to use.

[0039] It should be understood that the terms "first", "second" and the like in the present application are used to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information. In addition, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications are also considered within the protection scope of the present application.

Claims

1. A wheel structure comprising a support (1), a wheel (2) hinged to the support (1), and a brake mechanism cooperating with the wheel (2), characterized in that, a plurality of brake grooves (21) are arranged on the wheel (2), and the brake grooves (21) are arranged in an array along a circumferential direction of a hinge shaft of the wheel (2) and the support (1); the brake mechanism comprises a pull rope (31), a brake module (32), a transmission assembly (35) connecting the pull rope (31) and the brake module (32), and a reset assembly (36) connected to the transmission assembly (35), the brake module (32) is hinged to the support (1), the brake module (32) has a linkage end and a brake end, the linkage end of the brake module (32) is connected to the transmission assembly (35), and the brake end of the brake module (32) is provided with a brake rod (33) capable of cooperating with the brake groove (21); when the pull rope (31) is pulled, the transmission assembly (35) moves, drives the brake module (32) to rotate, and drives the brake rod (33) to enter the brake groove (21) to restrict the rotation of the wheel (2); when the pull rope (31) is released, the reset assembly (36) drives the transmission assembly (35) to move reversely, drives the brake module (32) to rotate reversely, and drives the brake rod (33) to exit the brake groove (21) to release the restriction on the wheel (2).

2. A wheel structure according to claim 1, wherein The hinge shaft of the brake module (32) and the support (1) is parallel to the hinge shaft of the wheel (2) and the support (1), and when the brake module (32) rotates, the brake rod (33) moves along the radial inner side of the wheel (2) to the radial outer side of the wheel (2) to enter the brake groove (21) or moves along the radial outer side of the wheel (2) to the radial inner side of the wheel (2) to enter the brake groove (21).

3. A wheel construction according to claim 2, wherein The wheel (2) is provided with an annular groove (22) communicating with the plurality of brake grooves (21), the annular groove (22) is located on the radial inner side of the wheel (2), the plurality of brake grooves (21) are located on the radial outer side of the wheel (2), the brake module (32) drives the brake rod (33) to enter the brake groove (21) from the annular groove (22) when the brake module (32) rotates, and the brake module (32) drives the brake rod (33) to enter the annular groove (22) from the brake groove (21) when the brake module (32) reversely rotates.

4. A vehicle wheel structure according to claim 1, wherein The brake end of the brake module (32) is provided with a first limiting hole (321), the brake rod (33) is movably arranged in the first limiting hole (321), the first limiting hole (321) has a first movable end and a second movable end, the brake module (32) is provided with a first elastic member (34) cooperating with the brake rod (33), and the first elastic member (34) has a tendency to drive the brake rod (33) to maintain at the first movable end.

5. A wheel structure according to claim 1, wherein The support (1) is provided with a movable connecting groove (101) and a movable limiting hole (102) communicated with the movable connecting groove (101), the linkage end of the brake module (32) is provided with a second limiting hole (322), the transmission assembly (35) comprises a transmission rod (351) and a linkage rod (352) which are perpendicular to each other and are sequentially arranged, the transmission rod (351) is movably arranged in the movable connecting groove (101) and is connected with the pull rope (31), one end of the linkage rod (352) is movably arranged in the movable connecting groove (101), the other end passes through the movable limiting hole (102) and is matched with the second limiting hole (322), when the pull rope (31) is pulled, the transmission rod (351) and the linkage rod (352) move upwards or downwards along the movable connecting groove (101), so as to drive the brake module (32) to rotate.

6. A vehicle wheel construction according to claim 5, characterised in that The transmission assembly (35) comprises a first mounting module (353), a second mounting module (354) and a pull rope guide (355), the first mounting module (353) is arranged above the transmission rod (351) and is connected with the transmission rod (351) and the pull rope (31), the second mounting module (354) is arranged below the transmission rod (351) and is connected with the linkage rod (352), the pull rope guide (355) is arranged below the position where the pull rope (31) is connected with the first mounting module (353), when the pull rope (31) is pulled, the transmission rod (351) and the linkage rod (352) move downwards, so as to drive the linkage end of the brake module (32) to rotate downwards and the brake end of the brake module (32) to rotate upwards.

7. A wheel construction according to claim 6, wherein The reset assembly (36) comprises a first reset member (361) arranged between the second mounting module (354) and the movable connecting groove (101).

8. A wheel construction according to claim 7, wherein The support (1) is provided with a guide groove (103) parallel to the movable connecting groove (101), the first mounting module (353) is provided with a guide block (3531) matched with the guide groove (103), and the reset assembly (36) comprises a second reset member (362) arranged between the guide block (3531) and the guide groove (103).

9. A wheel construction according to any one of claims 1-8, characterised in that The support (1) comprises a fixed seat (11) and a rotating seat (12), the rotating seat (12) is coaxially connected with the fixed seat (11), and the rotating seat (12) can rotate relative to the fixed seat (11), the brake module (32) and the wheel (2) are both hinged with the rotating seat (12).

10. A stroller comprising a frame, characterized in that, The frame is provided with the wheel structure according to any one of claims 1-9.

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