Stroller reversing and folding structure

Abstract

The utility model relates to a children's push car reversing and folding structure and belongs to the technical field of children's push car production. The inner chamber of push rod connecting seat has plug shaft A, plug shaft A penetrates rear support connecting seat and is connected with the plug-in connection of rotation bearing socket A in the inner chamber of front support connecting seat, and the both can rotate each other, the push rod locking tooth that moves along the length direction of plug shaft A is equipped on plug shaft A between rear support connecting seat and push rod connecting seat, the inner chamber of push rod connecting seat has linkage unlocking assembly that cooperates with front support locking tooth, plug shaft A in the inner chamber of front support connecting seat is provided with front support locking tooth push block that cooperates with front support locking tooth slider, plug shaft A in the inner chamber of rear support connecting seat is provided with rear support push block that cooperates with rear support slider. The utility model has the following beneficial effects: realize the synchronous turnover folding of rear support, push rod frame and front support, the height and volume of whole child's car chair are greatly compressed, and it is convenient to transport, store and transport.

Description

Technical Field

[0001] This utility model relates to a reversible folding structure for a children's stroller, belonging to the field of children's stroller manufacturing technology. Background Technology

[0002] Strollers offer great convenience for adults to take young children on outdoor activities, and have thus gradually become an essential item for adults taking children out. To facilitate carrying and storing, the stroller frame is generally foldable.

[0003] There are many types of strollers available, with varying numbers of frame members and different connection positions between the members, resulting in different folding principles, folding methods, and folded effects.

[0004] Most existing strollers have a folding function, meaning they unfold when in use and fold up when not in use. However, current technology is not comprehensive and has the following drawbacks: 1. Traditional strollers often fold in stages, making it difficult for the front frame, rear frame, and push rod to flip simultaneously. Even when folded, they retain a three-dimensional shape, resulting in a large height and volume, taking up a lot of space when stored, and making them inconvenient to carry and transport. 2. Changing the direction and folding the stroller often requires multiple steps, multiple people working together, and even additional tools, leading to low efficiency and poor convenience, especially when traveling alone with a child. 3. Setting / unsetting the direction of the front and rear wheels of traditional strollers often requires manual operation one by one, or the adjustment structure is complex and laborious, making it troublesome to switch directions during daily use.

[0005] To solve one of the above problems, there is an urgent need for a reversible folding structure for children's strollers. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to achieve the synchronous flipping and folding of the rear support, push rod frame and front support, so that the spatial posture of the three components changes from a three-dimensional unfolded form in the use state to a flat stacked form in the folded state, and the overall height and volume of the stroller chair are greatly reduced, making it easier to store and transport. To this end, a reversible folding structure for a children's stroller is provided.

[0007] The stroller reversing and folding structure of this utility model includes a front support connecting seat installed at the end of the front support, a rear support connecting seat installed at the end of the rear support, and a push rod connecting seat installed at the end of the push rod frame, and the three are connected together. The front support connecting seat and the push rod connecting seat are located on both sides of the rear support connecting seat. A front support slider is slidably disposed in the hollow rod of the front support, a rear support slider is slidably disposed in the hollow rod of the rear support, and a pull block is slidably disposed in the hollow rod of the push rod frame. The characteristic feature is that the inner cavity of the push rod connecting seat has a insertion shaft A, which passes through the rear support connecting seat and inserts into a rotating bearing socket A in the inner cavity of the front support connecting seat. The two are connected and can rotate relative to each other. A push rod locking tooth that moves along the length direction of the insert shaft A is sleeved on the insert shaft A between the rear bracket connecting seat and the push rod connecting seat. The inner cavity of the push rod connecting seat has a first unlocking component that cooperates with the push rod locking tooth. A front bracket locking tooth that moves along the length direction of the insert shaft A is sleeved on the insert shaft A between the rear bracket connecting seat and the front bracket connecting seat. The inner cavity of the push rod connecting seat has a linkage unlocking component that cooperates with the front bracket locking tooth. A front bracket locking tooth paddle block that cooperates with the front bracket slider is provided on the insert shaft A in the front bracket connecting seat. A rear bracket paddle block that cooperates with the rear bracket slider is provided on the insert shaft A in the rear bracket connecting seat.

[0008] Through the modular hinge design of the front support connector, rear support connector, and push rod connector, combined with the core structure of the linkage of the insert shaft drive, locking gear engagement, compression spring drive, and unlocking components, the rear support, push rod frame, and front support can be flipped and folded synchronously. The spatial posture of the three is transformed from a three-dimensional unfolded form in the use state to a flat stacked form in the folded state. The overall height and volume of the stroller chair are greatly reduced, making it easier to store and transport.

[0009] It enables the rear support, push rod bracket and front support to be flipped, folded or unfolded and reset simultaneously without the need for additional tools, thus balancing ease of operation and efficiency of use.

[0010] In any of the above embodiments, it is preferred that the center of the front bracket locking tooth block has a mounting hole A, the insert shaft A is inserted into the mounting hole A and fixedly connected to the front bracket locking tooth block, and the abutment A at the end of the front bracket slider abuts against the cam surface of the front bracket locking tooth block.

[0011] In any of the above embodiments, it is preferred that the center of the rear support block has a mounting hole B, the insert shaft A is inserted into the mounting hole B and fixedly connected to the rear support block, and the abutment B at the end of the rear support slider abuts against the cam surface of the rear support block.

[0012] In any of the above embodiments, preferably, the inner ring wall of the rear bracket connecting seat and the push rod connecting seat has a meshing groove A that engages with the push rod locking teeth. The first unlocking component includes a sliding block sleeved on the insert shaft A and movable along the length direction of the insert shaft A. The sliding block is provided with a driving inclined surface A, and the sliding block is provided with an abutting inclined surface A that abuts against the driving inclined surface A, forming an inclined surface driving engagement. The left side of the sliding block abuts against the push rod locking teeth. The inclined driving force provided by the driving inclined surface A can drive the sliding block to slide away from the push rod connecting seat. The sliding block pushes the push rod locking teeth out of the push rod connecting seat and completely enters the rear bracket connecting seat, releasing the rotation restriction on the push rod connecting seat.

[0013] In any of the above embodiments, preferably, the inner ring walls of the inner cavities of the front bracket connecting seat and the rear bracket connecting seat are provided with engagement grooves B that engage with the locking teeth of the front bracket. The linkage unlocking assembly includes a push plate sleeved on the insertion shaft A and movable along the length direction of the insertion shaft A. A detachable unlocking block is fixed in the inner cavity of the push rod connecting seat. The center of the unlocking block has a circular clearance hole. A driving inclined surface B is provided on the outer wall of the unlocking block. A push rod is provided on the push plate that abuts against the driving inclined surface B, forming an inclined surface driving engagement. The left side of the push plate abuts against the locking teeth of the front bracket. The inclined driving force provided by the driving inclined surface B can drive the push plate to slide away from the rear bracket connecting seat. The push plate pushes the locking teeth of the front bracket out of the rear bracket connecting seat and completely into the front bracket connecting seat, releasing the rotation restriction on the front bracket connecting seat.

[0014] In any of the above embodiments, it is preferred that the push plate is a disc, and two sets of push rods are provided, both of which are arranged around the central hole of the push plate. The push rods are integrally formed on the push plate, and the end of the push rod away from the push plate abuts against the driving inclined surface B.

[0015] In any of the above embodiments, it is preferred that one end of the pull block is located in the inner cavity, and the pull block is provided with a strip-shaped clearance hole for the insertion shaft A to pass through.

[0016] In any of the above embodiments, preferably, a return spring A is sleeved on the insert shaft A between the rear bracket lever and the push rod locking tooth, and the inclined driving force provided by the driving inclined surface A can be converted into the elastic driving force stored in the compression spring A for the reset of the push rod locking tooth; a return spring B is sleeved on the insert shaft A between the front bracket locking tooth lever and the front bracket locking tooth, and the inclined driving force provided by the driving inclined surface B can be converted into the elastic driving force stored in the compression spring B for the reset of the front bracket locking tooth.

[0017] In any of the above embodiments, it is preferred that the push rod frame is equipped with an unlocking / locking structure that drives the pull block to move, and the unlocking / locking structure is driven by the pull rope A; The front bracket is equipped with a front wheel positioning / de-orientation structure, which is driven by the front bracket slider through the pull rope B to drive the movement of the front bracket directional pin; The rear support is equipped with a rear wheel positioning / de-orientation structure, which is transmitted to the rear support slider via a pull rope C to drive the movement of the rear support directional pin; The aforementioned unlocking / locking structure, front wheel fixed / unfixed orientation structure, and rear wheel fixed / unfixed orientation structure can all adopt existing structures.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The stroller reversible folding structure described in this utility model uses a modular hinged design of the front support connecting seat, rear support connecting seat, and push rod connecting seat, combined with a core structure that links the insert shaft drive, locking gear engagement, compression spring drive, and unlocking components to achieve synchronous flipping and folding of the rear support, push rod frame, and front support. The spatial posture of the three components changes from a three-dimensional unfolded form in the use state to a flat stacked form in the folded state. The overall height and volume of the stroller seat are greatly reduced, making it easier to store and transport.

[0019] The stroller reversing and folding structure described in this utility model enables the rear support, push rod frame, and front support to be flipped, folded, unfolded, and reset simultaneously without the need for additional tools, thus balancing ease of operation and efficiency of use.

[0020] The stroller reversing and folding structure of this utility model has a front wheel fixing / unfixing structure installed on the front bracket. The front wheel fixing / unfixing structure is driven by a pull rope B and a front bracket slider to drive the movement of the front bracket fixing pin. The rear bracket has a rear wheel fixing / unfixing structure installed on the rear bracket. The rear wheel fixing / unfixing structure is driven by a pull rope C and a rear bracket slider to drive the movement of the rear bracket fixing pin. No additional tools are required, which takes into account both ease of operation and efficiency of use. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 (Expanded state); Figure 2 This is a partial exploded view of the present invention; Figure 3 This is a schematic diagram of the external structure of the pull block of this utility model; Figure 4 This is a schematic diagram of the external structure of the sliding block of this utility model; Figure 5 This is a schematic diagram of the external structure of the unlocking block of this utility model; Figure 6 This is a schematic diagram of the structure of the present invention. Figure 2 (After reversing); Figure 7 This is a schematic diagram of the structure of the present invention. Figure 3 (Folded state).

[0023] In the diagram: 1. Front bracket connecting seat; 1.1. Rotary bearing socket A; 2. Front bracket slider; 3. Front bracket toggle block; 4. Push plate; 4.1. Push rod; 5. Rear bracket connecting seat; 6. Rear bracket slider; 7. Rear bracket toggle block; 8. Sliding block; 8.1. Abutting inclined surface A; 9. Push rod connecting seat; 9.1. Insert shaft A; 10. Push rod locking tooth; 11. Unlocking block; 11.1. Driving inclined surface B; 12. Pull block; 12.1. Driving inclined surface A; 12.2. Strip-shaped clearance hole; 13. Front bracket locking tooth; 14. Rear bracket; 15. Push rod bracket; 16. Front bracket. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0025] Example 1, as Figure 1-7As shown, the stroller's reversible folding structure includes a front support connecting seat 1 installed at the end of the front support 16, a rear support connecting seat 5 installed at the end of the rear support 14, and a push rod connecting seat 9 installed at the end of the push rod frame 15, all three being interconnected. The front support connecting seat 1 and the push rod connecting seat 9 are located on either side of the rear support connecting seat 5. A front support slider 2 is slidably disposed in the hollow rod of the front support 16, a rear support slider 6 is slidably disposed in the hollow rod of the rear support 14, and a pull block 12 is slidably disposed in the hollow rod of the push rod frame 15. The inner cavity of the push rod connecting seat 9 has a insertion shaft A9.1, which passes through the rear support connecting seat 5 and is inserted into the swivel bearing socket A1.1 in the inner cavity of the front support connecting seat 1. The components can rotate relative to each other. A push rod locking tooth 10 that moves along the length direction of the insert shaft A9.1 between the rear bracket connecting seat 5 and the push rod connecting seat 9 is sleeved on the insert shaft A9.1. The inner cavity of the push rod connecting seat 9 has a first unlocking component that cooperates with the push rod locking tooth 10. A front bracket locking tooth 13 that moves along the length direction of the insert shaft A9.1 between the rear bracket connecting seat 5 and the front bracket connecting seat 1 is sleeved on the insert shaft A9.1. The inner cavity of the push rod connecting seat 9 has a linkage unlocking component that cooperates with the front bracket locking tooth 13. A front bracket locking tooth lever 3 that cooperates with the front bracket slider 2 is provided on the insert shaft A9.1 in the front bracket connecting seat 1. A rear bracket lever 7 that cooperates with the rear bracket slider 6 is provided on the insert shaft A9.1 in the rear bracket connecting seat 5.

[0026] Through the modular hinge design of the front bracket connecting seat 1, the rear bracket connecting seat 5 and the push rod connecting seat 9, combined with the core structure of the linkage of the insert shaft drive, locking gear engagement, compression spring drive and unlocking component, the rear bracket 14, the push rod frame 15 and the front bracket 16 can be flipped and folded synchronously. The spatial posture of the three is transformed from a three-dimensional unfolded form in the use state to a flat stacked form in the folded state. The overall height and volume of the stroller chair are greatly reduced, making it easier to store and transport.

[0027] The rear bracket 14, push rod bracket 15 and front bracket 16 can be flipped, folded or unfolded and reset simultaneously without the need for additional tools, thus balancing ease of operation and efficiency of use.

[0028] Example 2, as Figure 1-7As shown, the stroller's reversible folding structure includes a front support connecting seat 1 installed at the end of the front support 16, a rear support connecting seat 5 installed at the end of the rear support 14, and a push rod connecting seat 9 installed at the end of the push rod frame 15, all three being interconnected. The front support connecting seat 1 and the push rod connecting seat 9 are located on either side of the rear support connecting seat 5. A front support slider 2 is slidably disposed in the hollow rod of the front support 16, a rear support slider 6 is slidably disposed in the hollow rod of the rear support 14, and a pull block 12 is slidably disposed in the hollow rod of the push rod frame 15. The inner cavity of the push rod connecting seat 9 has a insertion shaft A9.1, which passes through the rear support connecting seat 5 and is inserted into the swivel bearing socket A1.1 in the inner cavity of the front support connecting seat 1. The components can rotate relative to each other. A push rod locking tooth 10 that moves along the length direction of the insert shaft A9.1 between the rear bracket connecting seat 5 and the push rod connecting seat 9 is sleeved on the insert shaft A9.1. The inner cavity of the push rod connecting seat 9 has a first unlocking component that cooperates with the push rod locking tooth 10. A front bracket locking tooth 13 that moves along the length direction of the insert shaft A9.1 between the rear bracket connecting seat 5 and the front bracket connecting seat 1 is sleeved on the insert shaft A9.1. The inner cavity of the push rod connecting seat 9 has a linkage unlocking component that cooperates with the front bracket locking tooth 13. A front bracket locking tooth lever 3 that cooperates with the front bracket slider 2 is provided on the insert shaft A9.1 in the front bracket connecting seat 1. A rear bracket lever 7 that cooperates with the rear bracket slider 6 is provided on the insert shaft A9.1 in the rear bracket connecting seat 5.

[0029] Furthermore, the center of the front bracket locking tooth block 3 has a mounting hole A, the insert shaft A9.1 is inserted into the mounting hole A and fixedly connected to the front bracket locking tooth block 3, and the abutment A at the end of the front bracket slider 2 abuts against the cam surface of the front bracket locking tooth block 3.

[0030] Furthermore, the rear support block 7 has a mounting hole B at its center, the insert shaft A9.1 is inserted into the mounting hole B and fixedly connected to the rear support block 7, and the abutment B at the end of the rear support slider 6 abuts against the cam surface of the rear support block 7.

[0031] Furthermore, the inner ring walls of the rear bracket connecting seat 5 and the push rod connecting seat 9 each have a meshing groove A that engages with the push rod locking tooth 10. The first unlocking component includes a sliding block 8 that is sleeved on the insert shaft A9.1 and can move along the length of the insert shaft A9.1. The pull block 12 is provided with a driving inclined surface A12.1, and the sliding block 8 is provided with an abutting inclined surface A8.1 that abuts against the driving inclined surface A12.1, forming an inclined surface driving engagement. The left side of the sliding block 8 abuts against the push rod locking tooth 10. The inclined driving force provided by the driving inclined surface A can drive the sliding block 8 to slide away from the push rod connecting seat 9. The sliding block 8 pushes the push rod locking tooth 10 out of the push rod connecting seat 9 and completely enters the rear bracket connecting seat 5, releasing the rotation restriction on the push rod connecting seat 9.

[0032] Furthermore, the inner ring walls of the inner cavities of the front bracket connecting seat 1 and the rear bracket connecting seat 5 each have a meshing groove B that engages with the front bracket locking tooth 13. The linkage unlocking assembly includes a push plate 4 sleeved on the insert shaft A9.1 and movable along the length of the insert shaft A9.1. A detachable unlocking block 11 is fixed in the inner cavity of the push rod connecting seat 9. The center of the unlocking block 11 has a circular clearance hole. The outer wall of the unlocking block 11 is provided with a driving inclined surface B11.1. The push plate 4 is provided with a push rod 4.1 that abuts against the driving inclined surface B11.1, forming an inclined surface driving engagement. The left side of the push plate 4 abuts against the front bracket locking tooth 13. The inclined driving force provided by the driving inclined surface B11.1 can drive the push plate 4 to slide away from the rear bracket connecting seat 5. The push plate 4 pushes the front bracket locking tooth 13 out of the rear bracket connecting seat 5 and completely into the front bracket connecting seat 1, releasing the rotation restriction on the front bracket connecting seat 1.

[0033] Furthermore, the push plate 4 is a disc, and two sets of push rods 4.1 are provided, both of which are arranged around the central hole of the push plate 4. The push rods 4.1 are integrally formed on the push plate 4, and the end of the push rod 4.1 away from the push plate 4 abuts against the driving inclined surface B11.1.

[0034] Furthermore, one end of the pull block 12 is located in the inner cavity, and the pull block 12 is provided with a strip-shaped clearance hole 12.2 for the insertion shaft A9.1 to pass through.

[0035] Furthermore, a return spring A is sleeved on the insertion shaft A9.1 between the rear bracket lever 7 and the push rod locking tooth 10. The inclined driving force provided by the driving inclined surface A12.1 can be converted into the elastic driving force stored in the compression spring A6 for the reset of the push rod locking tooth 10. A return spring B is sleeved on the insertion shaft A9.1 between the front bracket locking tooth lever 3 and the front bracket locking tooth 13. The inclined driving force provided by the driving inclined surface B11.1 can be converted into the elastic driving force stored in the compression spring B for the reset of the front bracket locking tooth 13.

[0036] Furthermore, the push rod frame 15 is equipped with an unlocking / locking structure that drives the pull block 12 to move. The unlocking / locking structure is transmitted to the pull block 12 via a pull rope A. The front bracket 16 is equipped with a front wheel positioning / unpositioning structure. The front wheel positioning / unpositioning structure is transmitted to the front bracket slider 2 via a pull rope B to drive the movement of the front bracket directional pin. The rear bracket 14 is equipped with a rear wheel positioning / unpositioning structure. The rear wheel positioning / unpositioning structure is transmitted to the rear bracket slider 6 via a pull rope C to drive the movement of the rear bracket directional pin. The unlocking / locking structure, the front wheel positioning / unpositioning structure, and the rear wheel positioning / unpositioning structure can all use existing structures.

[0037] Working principle: Pulling block 12 upward through the unlocking / locking mechanism causes sliding block 8 to slide along the insertion shaft A9.1 under the push of pull block 12. Sliding block 8 pushes push rod locking tooth 10 to slide along insertion shaft A9.1 and slide out from push rod connecting seat 9, thereby unlocking the push rod. The push rod rotates around the axis of insertion shaft A9.1 to the opposite side. When the push rod rotates, rear bracket toggle block 7 pushes rear bracket slider 6 to slide, and front bracket toggle block 3 pushes front bracket slider 2 to slide, thereby realizing the orientation and deorientation of the front and rear wheels.

[0038] Pulling block 12 upward via the unlocking / locking mechanism causes sliding block 8 to slide along insertion shaft A9.1 under the push of pull block 12. Sliding block 8 pushes push rod locking tooth 10 to slide along insertion shaft A9.1 and slide out from push rod connecting seat 9, thereby unlocking push rod. Push rod rotates downward around the axis of insertion shaft A9.1. When push rod rotates, push rod connecting seat 9 drives unlocking block 11 to rotate. The driving inclined surface B11.1 on unlocking block 11 pushes push rod 4.1 and push plate 4 to slide along the axis. Push plate 4 pushes front bracket locking tooth 13 to slide. Front bracket locking tooth 13 slides out from rear bracket connecting seat 5, thereby unlocking front bracket. Front bracket connecting seat 1 rotates inward, thereby realizing frame folding.

[0039] The stroller reversible folding structure described in this utility model uses a modular hinged design of the front support connecting seat, rear support connecting seat, and push rod connecting seat, combined with a core structure that links the insert shaft drive, locking gear engagement, compression spring drive, and unlocking components to achieve synchronous flipping and folding of the rear support, push rod frame, and front support. The spatial posture of the three components changes from a three-dimensional unfolded form in the use state to a flat stacked form in the folded state. The overall height and volume of the stroller seat are greatly reduced, making it easier to store and transport.

[0040] The stroller reversing and folding structure described in this utility model enables the rear support, push rod frame, and front support to be flipped, folded, unfolded, and reset simultaneously without the need for additional tools, thus balancing ease of operation and efficiency of use.

[0041] The front bracket is equipped with a front wheel positioning / depositioning structure, which is driven by a pull rope B and a front bracket slider to move the front bracket positioning pin. The rear bracket is equipped with a rear wheel positioning / depositioning structure, which is driven by a pull rope C and a rear bracket slider to move the rear bracket positioning pin. No additional tools are required, which balances ease of operation and efficiency.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0043] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A reversible folding structure for a child stroller, comprising a front support connecting seat (1) installed at the end of a front support (16), a rear support connecting seat (5) installed at the end of a rear support (14), and a push rod connecting seat (9) installed at the end of a push rod frame (15), and the three are connected together. The front support connecting seat (1) and the push rod connecting seat (9) are located on both sides of the rear support connecting seat (5). A front support slider (2) is slidably disposed in the hollow rod of the front support (16), a rear support slider (6) is slidably disposed in the hollow rod of the rear support (14), and a pull block (12) is slidably disposed in the hollow rod of the push rod frame (15), characterized in that: The inner cavity of the push rod connecting seat (9) has a insertion shaft A (9.1). The insertion shaft A (9.1) passes through the rear bracket connecting seat (5) and is inserted into the swivel bearing socket A (1.1) in the inner cavity of the front bracket connecting seat (1). The two can rotate relative to each other. A push rod locking tooth (10) that moves along the length direction of the insertion shaft A (9.1) is sleeved on the insertion shaft A (9.1) between the rear bracket connecting seat (5) and the push rod connecting seat (9). The inner cavity of the push rod connecting seat (9) has a first unlocking component that cooperates with the push rod locking tooth (10). The rear bracket A front bracket locking tooth (13) that moves along the length of the insertion shaft A (9.1) is sleeved on the insertion shaft A (9.1) between the connecting seat (5) and the front bracket connecting seat (1). The inner cavity of the push rod connecting seat (9) has a linkage unlocking component that cooperates with the front bracket locking tooth (13). The insertion shaft A (9.1) in the front bracket connecting seat (1) is provided with a front bracket locking tooth paddle (3) that cooperates with the front bracket slider (2). The insertion shaft A (9.1) in the rear bracket connecting seat (5) is provided with a rear bracket paddle (7) that cooperates with the rear bracket slider (6).

2. The stroller reversing folding structure according to claim 1, characterized in that, The center of the front bracket locking tooth block (3) has a mounting hole A. The insert shaft A (9.1) is inserted into the mounting hole A and fixedly connected to the front bracket locking tooth block (3). The abutment A at the end of the front bracket slider (2) abuts against the cam surface of the front bracket locking tooth block (3).

3. The stroller reversing folding structure according to claim 2, characterized in that, The rear support block (7) has a mounting hole B at its center. The insert shaft A (9.1) is inserted into the mounting hole B and fixedly connected to the rear support block (7). The abutment B at the end of the rear support slider (6) abuts against the cam surface of the rear support block (7).

4. The stroller reversing folding structure according to claim 3, characterized in that, The inner ring wall of the rear bracket connecting seat (5) and the push rod connecting seat (9) has a meshing groove A that engages with the push rod locking tooth (10). The first unlocking component includes a sliding block (8) sleeved on the insert shaft A (9.1) and movable along the length direction of the insert shaft A (9.1). The pull block (12) is provided with a driving inclined surface A (12.1). The sliding block (8) is provided with an abutting inclined surface A (8.1) that abuts against the driving inclined surface A (12.1), forming an inclined surface driving engagement. The left side of the sliding block (8) abuts against the push rod locking tooth (10). The inclined driving force provided by the driving inclined surface A can drive the sliding block (8) to slide away from the push rod connecting seat (9). The sliding block (8) pushes the push rod locking tooth (10) out of the push rod connecting seat (9) and completely enters the rear bracket connecting seat (5), releasing the rotation restriction on the push rod connecting seat (9).

5. The stroller reversing folding structure according to claim 4, characterized in that, The inner walls of the front bracket connecting seat (1) and the rear bracket connecting seat (5) are provided with engagement grooves B that cooperate with the locking teeth (13) of the front bracket. The linkage unlocking assembly includes a push plate (4) sleeved on the insertion shaft A (9.1) and movable along the length of the insertion shaft A (9.1). A detachable unlocking block (11) is fixed in the inner cavity of the push rod connecting seat (9). The center of the unlocking block (11) has a circular clearance hole. The outer wall of the unlocking block (11) is provided with a driving inclined surface B (11.1). The push plate ( 4) A push rod (4.1) is provided on the push plate (4) to abut against the drive inclined surface B (11.1) to form an inclined surface drive engagement. The left side of the push plate (4) abuts against the front bracket locking tooth (13). The inclined surface driving force provided by the drive inclined surface B (11.1) can drive the push plate (4) to slide away from the rear bracket connecting seat (5). The push plate (4) pushes the front bracket locking tooth (13) out of the rear bracket connecting seat (5) and completely enters the front bracket connecting seat (1), releasing the rotation restriction on the front bracket connecting seat (1).

6. The stroller reversing folding structure according to claim 5, characterized in that, The push plate (4) is a disc, and there are two sets of push rods (4.1), which are arranged around the central hole of the push plate (4). The push rods (4.1) are integrally formed on the push plate (4), and the end of the push rod (4.1) away from the push plate (4) abuts against the driving inclined surface B (11.1).

7. The stroller reversing folding structure according to claim 6, characterized in that, One end of the pull block (12) is located in the inner cavity, and the pull block (12) is provided with a strip-shaped clearance hole (12.2) for the insertion shaft A (9.1) to pass through.

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