Joint folding mechanism and stroller

Abstract

The joint folding mechanism comprises a seat body, a stroller handle seat, a locking structure and a shielding structure, the stroller handle seat is rotationally connected to the seat body, the locking structure comprises a locking groove, and the locking groove is formed in the seat body and provided with a notch located in the circumferential side face of the seat body; the shielding structure comprises a shielding piece movably arranged in the locking groove, the shielding piece has a shielding position and an avoiding position on the movable track of the shielding piece, when the shielding piece is located at the shielding position, the shielding piece covers the notch, and when the shielding piece is located at the avoiding position, the shielding piece is located in the locking groove; the shielding piece is movably connected with the handlebar seat, and the handlebar seat drives the shielding piece to be switched between the shielding position and the avoiding position when rotating relative to the seat body. The joint folding mechanism aims at preventing most of a locking opening of the joint folding mechanism from being exposed, and the possibility that the joint folding mechanism is clamped by foreign matter is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of children's products, and in particular to a joint folding mechanism and a child stroller. Background Art

[0002] A child stroller, often referred to as a baby carriage or a child vehicle, is a portable vehicle used to carry and transport infants or young children. There are various designs of child strollers, among which a foldable child stroller can be folded into a smaller volume by its own folding joints when not in use, making it easier to store and carry.

[0003] Currently, when a foldable stroller is folded, the locking opening of the folding joint is exposed, which poses a safety hazard. Utility Model Content

[0004] The embodiments of the present application provide a joint folding mechanism and a child stroller, which can prevent a large portion of a locking opening of the joint folding mechanism from being exposed, thereby reducing the possibility of the joint folding mechanism being stuck by foreign objects.

[0005] In the first aspect, an embodiment of the present application provides a joint folding mechanism, including a seat body, a driver seat, a locking structure and a shielding structure, wherein the driver seat is rotatably connected to the seat body, and the locking structure includes a locking groove, which is provided on the seat body and has a groove on the peripheral side of the seat body; the shielding structure includes a shielding member movably provided in the locking groove, and the shielding member has a shielding position and an avoidance position on a movable trajectory of the shielding member, when the shielding member is in the shielding position, the shielding member covers the groove, and when the shielding member is in the avoidance position, the shielding member is located in the locking groove; the shielding member is movably connected to the driver seat, and when the driver seat rotates relative to the seat body, the shielding member is driven to switch between the shielding position and the avoidance position.

[0006] In some embodiments, the driver's seat includes a driving seat, which is rotatably connected to the seat body; the joint folding mechanism also includes a transmission structure, which includes a first abutment wall and a second abutment wall arranged on the driving seat, and the shielding member partially extends between the first abutment wall and the second abutment wall, so as to drive the shielding member to move outward to the shielding position when the first abutment wall abuts against the shielding member, and drive the shielding member to move inward to the avoidance position when the second abutment wall abuts against the shielding member.

[0007] In some of the embodiments, the driving seat is formed with a driving through hole, the driving through hole has a first abutting wall and a second abutting wall, and the shielding member is partially disposed through the driving through hole.

[0008] In some embodiments, the driving through hole includes a first through hole section and a second through hole section which are interconnected, the first through hole section is extended in an arc shape along the direction of rotation of the driving seat, the first through hole section has a first hole section wall and a second hole section wall relative to each other, and the second through hole section has a first hole wall and a second hole wall relative to each other; the distance between the first hole section wall and the rotation center of the driving seat is greater than the distance between the first hole wall and the rotation center of the driving seat, and the distance between the second hole section wall and the rotation center of the driving seat is greater than the distance between the second hole wall and the rotation center of the driving seat.

[0009] In some of the embodiments, the driver seat also includes a driver tube integrally arranged with the driving seat, and the locking structure also includes a locking member, which is movably arranged in the driver tube. On the movable track of the locking member, the locking member has a locking position and an unlocking position. When the locking member is in the locking position, the locking member cooperates with the locking groove, and when the locking member is in the unlocking position, the locking member is outside the locking groove. The driving seat is provided with a first limiting wall, and the seat body is provided with a first stop body. When the first limiting wall abuts against the first stop body, the locking member can move along the length direction of the driver tube to the locking position.

[0010] In some of the embodiments, an avoidance hole is provided at the bottom of the locking groove, and the shielding structure also includes a limiting body, a limiting block is protruding from one end of the limiting body, and the other end of the limiting body passes through the avoidance hole and is fixed to the shielding member, so that when the shielding member moves outward to be flush with the groove, the limiting block abuts against the bottom of the locking groove.

[0011] In some of the embodiments, the seat body is provided with a guide groove communicated with the avoidance hole, and the limiting body is movably arranged in the guide groove.

[0012] In some of the embodiments, the handlebars are provided with a locking hole and a through hole extending along the length direction thereof, the joint folding mechanism also includes a release structure, the release structure includes a linkage, an elastic member, a pull handle and a release button, one end of the linkage is provided with a second limiting wall, and the other end is connected to the locking member, the two ends of the elastic member are respectively connected to the locking member and the handlebars, the pull handle is movably sleeved on the handlebars, the pull handle is provided with a second stop body, the second stop body passes through the through hole and abuts against the second limiting wall, the release button is rotatably installed on the pull handle, the release button has a relative pressing section and a stop section, the stop section can pass through the locking hole and extend into the interior of the handlebars.

[0013] In some embodiments, the locking member is provided with a first limiting protrusion, and a second limiting protrusion is provided in the handlebar tube. When the locking member is located in the locking position, the first limiting protrusion and the second limiting protrusion abut against each other to space the locking member from the shielding member.

[0014] In a second aspect, an embodiment of the present application further provides a child stroller, comprising a cover body and a joint folding mechanism as in any of the above embodiments, wherein the cover body is disposed on a side of the driver's seat facing away from the seat body.

[0015] Based on the joint folding mechanism of the embodiment of the present application, by providing a covering piece, when the frame of the child stroller needs to be folded, the driver's seat can be rotated relative to the seat body and drive the covering piece to move from the locking groove toward the notch of the locking groove, so that the covering piece covers the notch of the locking groove, which can avoid that most of the notch of the locking groove is exposed, reduce the possibility of foreign matter falling into the locking groove and causing the joint folding mechanism to get stuck, and thus facilitate the unfolding and folding of the frame of the child stroller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the child stroller of the present application after unfolding;

[0018] Figure 2 This is a schematic diagram of the structure of the child stroller of the present application after folding;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the joint folding mechanism of the present application;

[0020] Figure 4 for Figure 1 A structural diagram of the joint folding mechanism in FIG.

[0021] Figure 5 for Figure 4 A schematic diagram of the structure of the middle joint folding mechanism having a driving through hole and a limiting hole;

[0022] Figure 6 for Figure 2 A structural diagram of the joint folding mechanism in FIG.

[0023] Figure 7 for Figure 6 A schematic diagram of the structure of the middle joint folding mechanism having a driving through hole and a limiting hole;

[0024] Figure 8 It is a structural schematic diagram of the unlocking structure in this application.

[0025] Description of reference numerals:

[0026] 100, joint folding mechanism; 200, stroller; 300, cover body; 1, seat body; 11, first stopper; 12, guide groove; 2, driver seat; 21, driver tube; 211, second limiting protrusion; 212, locking hole; 213, through hole; 22, driving seat; 221, driving through hole; 2211, second through hole section; 2211a, first hole wall; 2211b, second hole wall; 2212, first through hole section; 2212a, first hole section wall; 2212b, second hole section wall; 221 3. First abutment wall; 223. First limiting wall; 222. Limiting hole; 3. Locking structure; 31. Locking groove; 311. Avoidance hole; 32. Locking member; 321. First limiting protrusion; 4. Shielding structure; 41. Shielding member; 42. Limiting body; 421. Limiting block; 422. Columnar protrusion; 5. Release structure; 51. Linking member; 511. Second limiting wall; 52. Pull handle; 521. Second stopping body; 53. Release button; 531. Pressing section; 532. Stopping section; 54. Elastic member.

[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] Currently, when a foldable stroller is folded, the locking opening of the folding joint is exposed, which poses a safety hazard.

[0030] In view of this, the present application provides a joint folding mechanism and a child stroller. Figures 1 to 8 It is a schematic structural diagram of the joint folding mechanism and the child stroller according to an embodiment of the present application.

[0031] First, see Figures 1 to 5 The present application proposes a joint folding mechanism 100, which includes a seat body 1, a driver seat 2, a locking structure 3 and a shielding structure 4. The driver seat 2 is rotatably connected to the seat body 1, and the locking structure 3 includes a locking groove 31, which is arranged on the seat body 1 and has a groove on the side surface of the seat body 1; the shielding structure 4 includes a shielding member 41 movably arranged in the locking groove 31, and on the movable track of the shielding member 41, the shielding member 41 has a shielding position and an avoidance position. When the shielding member 41 is located at the shielding position, the shielding member 41 covers the groove, and when the shielding member 41 is located at the avoidance position, the shielding member 41 is located in the locking groove 31; the shielding member 41 is movably connected to the driver seat 2, and when the driver seat 2 rotates relative to the seat body 1, it drives the shielding member 41 to switch between the shielding position and the avoidance position.

[0032] In the embodiment provided by the present application, the seat body 1 can be arranged in a circular shape, and the shielding member 41 can be arranged in an arc shape accordingly, so as to cover the notch of the locking groove 31 on the side of the seat body 1 to a greater extent. The locking groove 31 arranged on the seat body 1 can have only one bottom wall, two opposite side walls and three notches. Of course, the locking groove 31 can also have only three side walls, one bottom wall and two notches. The driver seat 2 can pass through the notch of the locking groove 31 close to the driver seat 2 and be connected to the shielding member 41, and then the shielding member 41 can be driven to move outward to the notch of the locking groove 31 on the side of the seat body 1. The locking groove 31 can extend from the side of the seat body 1 toward the middle of the seat body 1, and the locking groove 31 can also extend from the side of the seat body 1 toward other parts of the seat body 1. When the frame of the child stroller 200 is unfolded, the shielding member 41 is located inside the locking groove 31. When the frame of the stroller 200 needs to be folded, the driver seat 2 can be rotated clockwise to rotate the driver seat 2 relative to the seat body 1. During the rotation of the driver seat 2, the shielding member 41 will be subjected to the force exerted by the driver seat 2 toward the groove wall of the locking groove 31 and the force toward the notch of the locking groove 31 on the side of the seat body 1. In the direction close to the groove wall of the locking groove 31, the shielding member 41 will be resisted by the groove wall of the locking groove 31, and then the shielding member 41 will be able to move toward the notch of the locking groove 31 on the side of the seat body 1, so that the rotation stroke of the driver seat 2 is converted into an activity stroke of the shielding member 41 from the avoidance position to the shielding position, and the shielding member 41 shields the notch of the locking groove 31 on the side of the seat body 1.

[0033] In some embodiments of the present application, the driver's seat 2 includes a driving seat 22, which is rotatably connected to the seat body 1; the joint folding mechanism also includes a transmission structure, which includes a first abutting wall 2213 and a second abutting wall arranged on the driving seat 22, and the shielding member 41 partially extends between the first abutting wall 2213 and the second abutting wall, so as to drive the shielding member 41 to move outward to the shielding position when the first abutting wall 2213 abuts against the shielding member 41, and drive the shielding member 41 to move inward to the avoidance position when the second abutting wall abuts against the shielding member 41. When the driving seat 22 rotates clockwise to fold the frame of the child stroller 200, the first abutting wall 2213 and the second abutting wall will rotate accordingly, and the first abutting wall 2213 will directly contact the shielding member 41. As the driving seat 22 continues to rotate, the first abutting wall 2213 will drive the shielding member 41 to move outward to the notch of the locking groove 31 and block the notch of the locking groove 31 on the side surface of the seat body 1; when unfolding the frame of the child stroller 200, the driving seat 22 is rotated counterclockwise, and the second abutting wall will directly contact the shielding member 41. As the driving seat 22 continues to rotate, the second abutting wall will drive the shielding member 41 to move into the locking groove 31. Among them, when the drive seat 22 rotates relative to the seat body 1, it can drive the shielding member 41 to switch between the shielding position and the avoidance position. The locking groove 31 can have three groove walls and two notches. The drive seat 22 can partially pass through the notch of the locking groove 31 close to the drive seat 22 to connect with the shielding member 41, or the shielding member 41 can partially pass through the notch of the locking groove 31 close to the drive seat 22 and be connected to the drive seat 22. The drive seat 22 can be arranged in a circular shape, and the drive seat 22 can rotate relative to the middle part of the seat body 1. The size of the drive seat 22 can be the same as the size of the seat body 1. In this way, not only can the space occupied by the drive seat 22 be saved, but the locking groove 31 on the seat body 1 can also be shielded to prevent foreign matter from entering the locking groove 31 from the notch of the locking groove 31 close to the drive seat 22. The joint action of the drive seat 22 and the shielding member 41 can further improve the blocking effect of foreign matter. The first abutting wall 2213 and the second abutting wall can be arranged at intervals along the circumference of the driving seat 22, so that when the driving seat 22 rotates in the clockwise and counterclockwise directions, the first abutting wall 2213 and the second abutting wall can both contact the shielding member 41. The shielding member 41 partially extends between the first abutting wall 2213 and the second abutting wall, and the portion of the shielding member 41 extending between the first abutting wall 2213 and the second abutting wall can be a cylindrical protrusion 422 protruding from the shielding member 41. The first abutting wall 2213 and the second abutting wall can be arranged in an arc shape, so that there can be more contact area with the cylindrical protrusion 422, and the shielding member 41 can be pushed to move more stably, and the two sides of the cylindrical protrusion 422 can be resisted to prevent the cylindrical protrusion 422 from being out of contact due to relative movement after contacting the first abutting wall 2213 or the second abutting wall.The transmission structure can also be a driving groove extending in a circumferential arc along the driving seat 22. The first abutment wall 2213 and the second abutment wall can be two groove side walls opposite to each other in the extension direction of the driving groove. The groove opening of the driving groove is close to the seat body 1. The shielding member 41 can be partially located in the driving groove, which can limit the movement of the shielding member 41 out of the driving groove, thereby preventing the shielding member 41 from being unable to contact the first abutment wall 2213 or the second abutment wall after moving in other directions before contacting the first abutment wall 2213 or the second abutment wall.

[0034] Further, the drive seat 22 is formed with a drive through hole 221, and the drive through hole 221 has a first abutting wall 2213 and a second abutting wall, and the shielding member 41 is partially penetrated in the drive through hole 221. In this way, the shielding member 41 can more accurately contact the first abutting wall 2213 and the second abutting wall, which is convenient for the shielding member 41 to switch between the shielding position and the avoidance position. In addition, the setting of the drive through hole 221 can also not limit the extension length of the shielding member 41 part that is penetrated in the drive through hole 221, that is, it does not limit the length of the columnar protrusion 422. When the shielding member 41 partially passes through the drive through hole 221, the shielding member 41 can also be manually operated to move to the notch of the locking groove 31 located on the side of the seat body 1. Among them, the drive through hole 221 can be a hole that passes through the drive seat 22, and the first abutting wall 2213 and the second abutting wall can be two inner walls of the hole that are opposite to each other in the extension direction of the drive through hole 221.

[0035] In order to make the shielding member 41 move more smoothly between the shielding position and the avoidance position, in some embodiments of the present application, the driving through hole 221 includes a first through hole section 2212 and a second through hole section 2211 which are connected to each other, and the first through hole section 2212 is extended in an arc shape along the rotation direction of the driving seat 22, and the first through hole section 2212 has a first hole section wall 2212a and a second hole section wall 2212b opposite to each other, and the second through hole section 2211 has a first hole wall 2211a and a second hole wall 2211b opposite to each other; the distance between the first hole section wall 2212a and the rotation center of the driving seat 22 is greater than the distance between the first hole wall 2211a and the rotation center of the driving seat 22, and the distance between the second hole section wall 2212b and the rotation center of the driving seat 22 is greater than the distance between the second hole wall 2211b and the rotation center of the driving seat 22. In this way, when the driving seat 22 is rotated clockwise, the portion of the shielding member 41 that passes through the second through hole section 2211 will be subjected to a force toward the notch of the locking groove 31 exerted by the first hole wall 2211a, so that the shielding member 41 only moves along the direction of the notch of the locking groove 31 on the side surface of the seat body 1 without being blocked by the side wall of the locking groove 31, so that the shielding member 41 can move to the shielding position more smoothly. As the shielding member 41 is pushed and moved by the first hole wall 2211a, the shielding member 41 will gradually move away from the rotation center of the driving seat 22. When the shielding member 41 is in the shielding position, the first through hole section 2212 will move relative to the shielding member 41, thereby allowing the shielding member 41 to smoothly enter the first through hole section 2212. The portion of the shielding member 41 that passes through the first through hole section 2212 can be separated from the side wall of the first through hole section 2212 by a certain gap. When the frame of the child stroller 200 is folded, the shielding member 41 is not only in the shielding position, but part of the shielding member 41 also passes through the portion of the first through hole section 2212 that covers the second through hole section 2211. When the driving seat 22 is rotated counterclockwise, part of the shielding member 41 will be located at the connection between the first through hole section 2212 and the second through hole section 2211. As the driving seat 22 continues to rotate, the second hole wall 2211b will apply a force to the shielding member 41 in the direction away from the side notch of the locking groove 31 around the seat body 1, so that the shielding member 41 moves from the shielding position to the avoidance position. When in the avoidance position, part of the shielding member 41 is inserted into the second through hole section 2211.

[0036] In order to prevent the driving seat 22 from rotating too much counterclockwise when the frame of the child stroller 200 is unfolded, in some embodiments of the present application, the driver seat 2 also includes a driver tube 21 integrally arranged with the driving seat 22, and the locking structure 3 also includes a locking member 32, which is movably arranged in the driver tube 21, and on the movable track of the locking member 32, the locking member 32 has a locking position and an unlocking position, when the locking member 32 is in the locking position, the locking member 32 cooperates with the locking groove 31, and when the locking member 32 is in the unlocking position, the locking member 32 is located outside the locking groove 31; the driving seat 22 is provided with a first limiting wall 223, and the seat body 1 is provided with a first stop body 11, when the first limiting wall 223 abuts against the first stop body 11, the locking member 32 can move to the locking position along the length direction of the driver tube 21. In this way, when the driving seat 22 rotates counterclockwise, the first stopper 11 will touch the first limiting wall 223 and form a block to the first limiting wall 223, which can limit the continued rotation of the driving seat 22, causing the driving seat 22 to stop, and can make the notch of the locking groove 31 on the driving seat 22 correspond to the pipe opening of the handle tube 21, at this time, the locking member 32 can pass through the pipe opening of the handle tube 21 and the notch of the locking groove 31 in sequence along the length direction of the handle tube 21 and move to the inside of the locking groove 31, so that the locking member 32 can accurately reach the locking position to position the handle seat 2 on the seat body 1. When the frame of the child stroller 200 is to be folded, the locking member 32 is pulled out of the locking groove 31, so that the locking member 32 is in the unlocking position, and the lock of the handle seat 2 is released. At this time, the driving seat 22 can rotate relative to the seat body 1, and the handle tube 21 can be manually pressed down to make the driving seat 22 rotate clockwise, thereby completing the folding of the frame of the child stroller 200. Two drive seats 22 can be provided, and both drive seats 22 can be integrally provided with the handlebars 21, and the seat body 1 is provided between the two drive seats 22. In this way, when the locking groove 31 has three notches, the two drive seats 22 can block the two notches opposite to each other in the thickness direction of the locking groove 31, and can further prevent foreign matter from entering the locking groove 31. The first limiting wall 223 can be a groove side wall of the limiting groove extending in an arc shape along the rotation direction of the drive seat 22, or the first limiting wall 223 can also be a hole wall of the limiting hole 222 extending in an arc shape along the rotation direction of the drive seat 22, and the first stop plate can be a pin extending into the limiting groove, or a pin penetrating the limiting hole 222. Among them, the limiting hole 222 can be provided at the periphery of the driving through hole 221, and the arc length of the limiting hole 222 can be greater than the arc length of the driving through hole 221.

[0037] In order to prevent the shielding member 41 from passing through the slot of the locking slot 31 and moving outside the periphery of the seat body 1, thereby reducing the blocking effect on foreign objects, in some embodiments of the present application, an avoidance hole 311 is provided at the bottom of the locking slot 31, and the shielding structure 4 also includes a limiting body 42, one end of the limiting body 42 is protrudingly provided with a limiting block 421, and the other end of the limiting body 42 passes through the avoidance hole 311 and is fixedly connected to the shielding member 41, so that when the shielding member 41 moves outward to be flush with the slot, the limiting block 421 abuts against the bottom of the locking slot 31. When the driving seat 22 rotates clockwise, the shielding member 41 and the limiting body 42 will move toward the shielding position together. When the shielding member 41 moves to be flush with the notch of the locking groove 31, the limiting block 421 will contact the side of the bottom of the locking groove 31 away from the notch, and the bottom of the locking groove 31 will resist the limiting block 421, thereby preventing the shielding member 41 from continuing to move, so that the shielding member 41 stops at a position flush with the notch of the locking groove 31, which can not only prevent the shielding member 41 from moving outside the locking groove 31, but also prevent foreign matter from entering the locking groove 31 to a greater extent. Among them, the locking groove 31 can have only one notch, which is located on the peripheral side of the seat body 1, and the driving seat 22 can be connected to the limiting body 42, and the movement of the shielding member 41 is driven by the movement of the limiting body 42.

[0038] Furthermore, the seat body 1 is provided with a guide groove 12 connected to the avoidance hole 311, and the limiter 42 is movably provided in the guide groove 12. By providing the guide groove 12, the two opposite groove side walls of the guide groove 12 can reduce the range of movement of the limiter 42 in other directions, so that the limiter 42 can move along the direction in which the guide groove 12 extends, so that it is not only convenient for the shielding member 41 to move to the shielding position, but also can guide the limiter 421 to accurately contact the groove bottom of the locking groove 31, so as to prevent the limiter 421 from being separated from the resistance of the groove bottom of the locking groove 31.

[0039] In some embodiments of the present application, the handle tube 21 is provided with a locking hole 212 and a through hole 213 extending along its length direction, and the joint folding mechanism also includes a release structure 5, the release structure 5 includes a linkage 51, an elastic member 54, a handle 52 and a release button 53, one end of the linkage 51 is provided with a second limiting wall 511, and the other end is connected to the locking member 32, the two ends of the elastic member 54 are respectively connected to the locking member 32 and the handle tube 21, the handle 52 is movably sleeved on the handle tube 21, the handle 52 is provided with a second stop body 521, the second stop body 521 passes through the through hole 213 and abuts against the second limiting wall 511, the release button 53 is rotatably installed on the handle 52, the release button 53 has a relative pressing section 531 and a stop section 532, the stop section 532 can pass through the locking hole 212 and extend into the interior of the handle tube 21. When it is necessary to pull the locking member 32 out to the unlocking position, the pressing section 531 of the unlocking button 53 is manually pressed to disengage the abutting section 532 from the locking hole 212, and then the pull handle 52 can be pulled. In the process of pulling the pull handle 52, the second stop body 521 will contact and pull the second limiting wall 511 on the linking member 51 to move, so that the locking member 32 connected to the linking member 51 is pulled out of the locking groove 31, and the locking member 32 will compress the elastic member 54 and rotate the handle tube 21 clockwise, and the locking member 32 will abut against the peripheral side of the seat body 1. At this time, there is no need to pull the pull handle 52 anymore, and the handle tube 21 can continue to be rotated clockwise to complete the folding of the frame of the child stroller. When the driver's seat 2 needs to be locked, the driver's tube 21 is rotated counterclockwise so that the tube opening of the driver's tube 21 corresponds to the notch of the locking groove 31, and the locking member will move toward the direction close to the locking groove 31 and enter the locking groove 31 under the elastic force of the elastic member 54, and the linking member 51 and the pull handle 52 will also move toward the direction close to the locking groove 31 together with the locking member. After the locking member enters the locking groove 31, the stop section 532 of the release button 53 will pass through the locking hole 212 and abut against the hole wall of the locking hole 212, which can prevent the locking member 32 from being pulled out of the locking groove 31 due to misoperation after the driver's seat 2 is locked. Among them, the second limiting wall 511 can be a hole wall of a connecting hole extending along the length direction of the linking member 51, and the second stop body 521 can be a pin. The elastic member 54 can include a coil spring.

[0040] In order to prevent the locking member 32 from colliding with the shielding member 41 after entering the locking groove 31, in some embodiments of the present application, the locking member 32 is provided with a first limiting protrusion 321, and a second limiting protrusion 211 is provided in the handlebar 21. When the locking member 32 is located at the locking position, the first limiting protrusion 321 and the second limiting protrusion 211 abut against each other, so that the locking member 32 is spaced apart from the shielding member 41. When the locking member 32 moves toward the locking groove 31, the first limiting protrusion 321 contacts the second limiting protrusion 211, and the second limiting protrusion 211 stops the first limiting protrusion 321 from continuing to move, thereby blocking the locking member 32 from continuing to move, so that the locking member 32 stops at the locking position. At the locking position, the locking member 32 is spaced apart from the shielding member 41 by a certain distance. In this way, the locking member 32 can be prevented from damaging the shielding member 41, and the portion of the shielding member 41 that passes through the second through hole section 2211 can be prevented from being hit and entering the first through hole section 2212, thereby preventing the shielding member 41 from covering the notch of the locking groove 31 when the stroller 200 frame is folded.

[0041] In the second aspect, the embodiment of the present application further provides a child stroller 200, comprising a cover body 300 and a joint folding mechanism as in any of the above embodiments, wherein the cover body 300 is disposed on the side of the driver seat 2 away from the seat body 1. The cover body 300 can shield the shielding structure 4 and the locking groove 31, thereby preventing the shielding structure 4 from being affected by external forces, improving the blocking effect of the joint folding mechanism on foreign objects, and thereby enabling the frame of the child stroller 200 to be more smoothly unfolded and folded.

[0042] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A joint folding mechanism, characterized in that: include: seat body; A driver's seat, rotatably connected to the seat body; A locking structure, comprising a locking groove, the locking groove being arranged on the seat body and having a notch located on a peripheral side surface of the seat body; as well as, The shielding structure includes a shielding member movably arranged in the locking groove. On the movable track of the shielding member, the shielding member has a shielding position and an avoidance position. When the shielding member is located at the shielding position, the shielding member covers the slot. When the shielding member is located at the avoidance position, the shielding member is located in the locking groove. The shielding member is movably connected to the driver's seat. When the driver's seat rotates relative to the seat body, the shielding member is driven to switch between the shielding position and the avoidance position.

2. The joint folding mechanism according to claim 1, characterized in that: The driver's seat includes a driving seat, and the driving seat is rotatably connected to the seat body; The joint folding mechanism also includes a transmission structure, which includes a first abutment wall and a second abutment wall arranged on the driving seat, and the shielding member partially extends between the first abutment wall and the second abutment wall to drive the shielding member to move outward to a shielding position when the first abutment wall abuts against the shielding member, and drive the shielding member to move inward to an avoidance position when the second abutment wall abuts against the shielding member.

3. The joint folding mechanism according to claim 2, characterized in that: The driving seat is formed with a driving through hole, the driving through hole has the first abutting wall and the second abutting wall, and the shielding member is partially disposed through the driving through hole.

4. The joint folding mechanism according to claim 3, characterized in that: The driving through hole includes a first through hole section and a second through hole section which are interconnected, the first through hole section extending in an arc shape along the direction of rotation of the driving seat, the first through hole section having a first hole section wall and a second hole section wall opposite to each other, and the second through hole section having a first hole wall and a second hole wall opposite to each other; the distance between the first hole section wall and the rotation center of the driving seat is greater than the distance between the first hole wall and the rotation center of the driving seat, and the distance between the second hole section wall and the rotation center of the driving seat is greater than the distance between the second hole wall and the rotation center of the driving seat.

5. The joint folding mechanism according to claim 2, characterized in that: The driver seat further comprises a driver tube integrally arranged with the driving seat, and the locking structure further comprises a locking member, which is movably arranged in the driver tube, and has a locking position and an unlocking position on a movable track of the locking member, and when the locking member is located at the locking position, the locking member cooperates with the locking groove, and when the locking member is located at the unlocking position, the locking member is located outside the locking groove; The driving seat is provided with a first limiting wall, and the seat body is provided with a first stop body. When the first limiting wall abuts against the first stop body, the locking member can move to the locking position along the length direction of the handlebar tube.

6. The joint folding mechanism according to claim 1, characterized in that: An avoidance hole is provided at the bottom of the locking groove, and the shielding structure also includes a limiting body, one end of which is protruding with a limiting block, and the other end of the limiting body passes through the avoidance hole and is fixed to the shielding member, so that when the shielding member moves outward to be flush with the groove, the limiting block abuts against the bottom of the locking groove.

7. The joint folding mechanism according to claim 6, characterized in that: The seat body is provided with a guide groove communicated with the avoidance hole, and the limiting body is movably arranged in the guide groove.

8. The joint folding mechanism according to claim 5, characterized in that: The handlebar tube is provided with a locking hole and a through hole extending along its length direction, and the joint folding mechanism further includes a release structure, which includes: A linkage member, one end of which is provided with a second limiting wall, and the other end of which is connected to the locking member; An elastic member, two ends of which are respectively connected to the locking member and the handlebar tube; A handle, movably sleeved on the handlebar, the handle is provided with a second stopper, the second stopper passes through the through hole and abuts against the second limiting wall; and A release button is rotatably mounted on the pull handle, and the release button has a pressing section and a stop section relative to each other, and the stop section can pass through the locking hole and extend into the interior of the handlebar tube.

9. The joint folding mechanism according to claim 5, characterized in that: The locking member is provided with a first limiting protrusion, and a second limiting protrusion is provided in the handlebar. When the locking member is located at the locking position, the first limiting protrusion abuts against the second limiting protrusion to space the locking member from the shielding member.

10. A baby stroller, characterized in that: It comprises a cover body and a joint folding mechanism as claimed in any one of claims 1 to 9, wherein the cover body is arranged on a side of the driver's seat away from the seat body.

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