A stroller joint folding and unlocking assembly

Abstract

The application belongs to the technical field of baby strollers, and particularly relates to a joint folding synchronous unlocking assembly of a baby stroller. The joint folding synchronous unlocking assembly comprises a seat unlocking mechanism for mounting a seat assembly, and a frame unlocking mechanism connected with the seat unlocking mechanism and a frame main body. The seat unlocking mechanism rotates relative to the frame unlocking mechanism, and drives the frame unlocking mechanism to unlock the frame main body for folding. The seat unlocking mechanism and the frame unlocking mechanism are linked to realize synchronous folding operation of the seat assembly and the frame main body. Compared with the traditional design of operating multiple keys respectively, the use process is greatly simplified, the operation convenience and efficiency are improved, the user only needs to operate the seat unlocking mechanism to complete the folding of the seat and the frame at the same time, and the risk of misoperation is effectively reduced. In addition, the linkage unlocking structure also reduces the number of independent keys and related parts, optimizes the whole vehicle structure, reduces the manufacturing cost and the difficulty of later maintenance, and has high practicability and popularization value.

Description

Technical Field

[0001] This application belongs to the field of children's vehicle technology, specifically relating to a children's vehicle joint folding and unlocking synchronous component. Background Technology

[0002] In existing stroller designs, folding the seat and the frame typically require two separate buttons for operation. This design makes operation cumbersome, requiring users to locate and operate two different buttons, which can be inconvenient in practical use. Furthermore, the presence of multiple buttons increases the manufacturing cost and maintenance difficulty of the stroller. Utility Model Content

[0003] To address the issue that existing technologies require separate button operations for seat folding and frame folding, which may lead to inconvenience in actual use, this application provides a stroller joint folding synchronous unlocking component.

[0004] This application is achieved through the following technical solution:

[0005] A stroller joint folding and unlocking assembly includes a seat unlocking mechanism for mounting a seat assembly, and a frame unlocking mechanism connecting the seat unlocking mechanism and the frame body. The seat unlocking mechanism rotates relative to the frame unlocking mechanism, causing the frame unlocking mechanism to unlock the frame body for folding.

[0006] As described above, a stroller joint folding synchronous unlocking assembly includes a seat unlocking mechanism comprising a drive ring coaxially connected to the seat assembly and a locking block slidably disposed on the drive ring. The frame body is provided with a first limiting groove for partial embedding of the locking block, and the drive ring is provided with a second limiting groove for partial embedding of the locking block. The locking block is simultaneously embedded in the first limiting groove and the second limiting groove to restrict the seat unlocking mechanism from rotating relative to the frame body.

[0007] As described above, in a stroller joint folding synchronous unlocking assembly, the seat unlocking mechanism further includes a first elastic element disposed between the locking block and the drive ring. The locking block has a slot for coaxial connection between the seat assembly and the frame body. The first elastic element drives the locking block to engage with the first limiting slot and the second limiting slot to restrict the seat unlocking mechanism from rotating relative to the frame body. When the locking block moves downward away from the first limiting slot, the restriction on the seat unlocking mechanism from rotating relative to the frame unlocking mechanism is released.

[0008] As described above, in a stroller joint folding synchronous unlocking assembly, the drive ring is provided with a movable slot for the locking block to partially protrude outward from the drive ring.

[0009] The stroller joint folding synchronous unlocking assembly described above further includes a connector connected to the drive ring and used to drive the drive ring to rotate relative to the frame unlocking mechanism.

[0010] As described above, a children's stroller joint folding synchronous unlocking assembly includes a frame unlocking mechanism comprising a joint unlocking slider disposed on the frame body and a joint locking pin that engages obliquely with the joint unlocking slider. The drive ring is provided with a drive abutment for pushing the joint unlocking slider to slide away from the drive ring. The frame body is provided with a locking hole for the joint locking pin to be inserted into, and the joint locking pin is inserted into the locking hole to restrict the folding of the frame body.

[0011] As described above, in a children's stroller joint folding synchronous unlocking assembly, the frame unlocking mechanism further includes a third elastic element disposed between the joint unlocking slider and the frame body. The joint unlocking slider is provided with a sliding groove for the joint locking pin to slide and engage, allowing the joint locking pin to insert into or withdraw from the locking hole. When the drive ring rotates, the drive abutment presses down on the joint unlocking slider, causing the joint locking pin to withdraw from the locking hole, thereby releasing the restriction on the frame body to fold. The third elastic element drives the joint unlocking slider to slide back to its original position, causing the joint locking pin to insert into the locking hole, thereby restricting the frame body to fold.

[0012] As described above, in a stroller joint folding synchronous unlocking assembly, the driving abutment is disposed along the outer edge of the driving ring, the driving abutment has a first driving slope near the joint unlocking slider, and the joint unlocking slider has a second driving slope that cooperates with the first driving slope.

[0013] As described above, a children's stroller joint folding and unlocking assembly includes a frame body comprising a connecting block, a rear leg assembly connected to the connecting block, a front leg assembly hinged to the connecting block, and a handlebar assembly, as well as a synchronization mechanism for folding the front leg assembly and the handlebar assembly synchronously towards the rear leg assembly.

[0014] As described above, a children's stroller joint folding synchronous unlocking assembly includes a synchronization mechanism comprising a connecting rod, a first connecting hole on the front leg assembly for inserting one end of the connecting rod, a second connecting hole on the handle assembly for inserting the other end of the connecting rod, a first clearance groove on the connecting block corresponding to the displacement trajectory of the first connecting hole, and a second clearance groove corresponding to the displacement trajectory of the second connecting hole. When the handle assembly moves towards the rear leg assembly, the connecting rod synchronously moves the front leg assembly towards the rear leg assembly; when the front leg assembly moves towards the rear leg assembly, the connecting rod synchronously moves the handle assembly towards the rear leg assembly.

[0015] Compared with the prior art, this application has the following advantages:

[0016] This application discloses a children's stroller joint folding synchronous unlocking component. By linking the seat unlocking mechanism with the frame unlocking mechanism, it achieves synchronous folding of the seat assembly and the main frame. Compared with the traditional design that requires operating multiple buttons separately, it greatly simplifies the usage process and improves the convenience and efficiency of operation. Users only need to operate the seat unlocking mechanism to complete the folding of the seat and frame simultaneously, effectively reducing the risk of misoperation. In addition, this linked unlocking structure also reduces the number of independent buttons and related parts, optimizes the overall structure of the stroller, reduces manufacturing costs and the difficulty of later maintenance, and has high practicality and promotional value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional perspective view of an embodiment of this application;

[0019] Figure 2 yes Figure 1 Installation diagram;

[0020] Figure 3 It is a partial exploded view of the frame body. Figure 1 ;

[0021] Figure 4 yes Figure 3 Enlarged view at point A in the middle;

[0022] Figure 5 It is a partial exploded view of the frame body. Figure 2 ;

[0023] Figure 6 yes Figure 5 Enlarged view at point B;

[0024] Figure 7 This is a schematic diagram of the internal structure before unlocking in an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of the internal structure after unlocking in an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the internal structure of the synchronization mechanism in the embodiment of this application when it is deployed;

[0027] Figure 10 This is a schematic diagram of the internal structure of the synchronization mechanism during folding in an embodiment of this application. Detailed Implementation

[0028] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0029] Please see Figures 1 to 10 A children's stroller joint folding and unlocking assembly includes a seat unlocking mechanism 5 for mounting a seat assembly 2, and a frame unlocking mechanism 6 connecting the seat unlocking mechanism 5 and the frame body 1. The seat unlocking mechanism 5 rotates relative to the frame unlocking mechanism 6, driving the frame unlocking mechanism 6 to unlock the frame body 1 for folding.

[0030] This application discloses a children's stroller joint folding synchronous unlocking component. By linking the seat unlocking mechanism with the frame unlocking mechanism, it achieves synchronous folding of the seat assembly and the main frame. Compared with the traditional design that requires operating multiple buttons separately, it greatly simplifies the usage process and improves the convenience and efficiency of operation. Users only need to operate the seat unlocking mechanism to complete the folding of the seat and frame simultaneously, effectively reducing the risk of misoperation. In addition, this linked unlocking structure also reduces the number of independent buttons and related parts, optimizes the overall structure of the stroller, reduces manufacturing costs and the difficulty of later maintenance, and has high practicality and promotional value.

[0031] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the seat unlocking mechanism 5 includes a drive ring 51 coaxially connected to the seat assembly 2 and a locking block 53 slidably disposed on the drive ring 51. The frame body 1 is provided with a first limiting groove 55 for the locking block 53 to be partially embedded, and the drive ring 51 is provided with a second limiting groove 56 for the locking block 53 to be partially embedded. The locking block 53 is simultaneously embedded in the first limiting groove 55 and the second limiting groove 56 to restrict the seat unlocking mechanism 5 from rotating relative to the frame body 1.

[0032] In this embodiment, the seat unlocking mechanism 5, through the coordinated operation of the drive ring 51, the seat unlocking slider 52, and the locking block 53, constructs a structure with limiting and linkage unlocking functions. This effectively controls the rotation of the seat assembly 2 relative to the vehicle frame body 1 and achieves automatic unlocking and resetting operations. By applying external force to press down the locking block 53, the locking block 53 disengages from the first limiting groove 55 on the vehicle frame body 1, thereby unlocking the seat assembly 2. In the unlocked state, the seat unlocking mechanism 5 can rotate relative to the vehicle frame body 1.

[0033] Furthermore, as a preferred embodiment of this solution and not a limitation, the seat unlocking mechanism 5 further includes a first elastic element 57 disposed between the locking block 53 and the drive ring 51. The locking block 53 is provided with a slot 59 for coaxial connection between the seat assembly 2 and the vehicle frame body 1. The first elastic element 57 drives the locking block 53 to be embedded in the first limiting slot 55 and the second limiting slot 56 to restrict the rotation of the seat unlocking mechanism 5 relative to the vehicle frame body 1. When the locking block 53 moves downward away from the first limiting slot 55, the restriction on the rotation of the seat unlocking mechanism 5 relative to the vehicle frame unlocking mechanism 6 is released.

[0034] In this embodiment, the seat unlocking mechanism 5 constructs a linkage locking structure with elastic self-resetting and precise limiting functions by setting a first elastic element 57 between the locking block 53 and the drive ring 51, and providing a hole groove 59 on the locking block 53 for coaxial connection between the seat assembly 2 and the frame body 1. When no operation is performed, the first elastic element 57 pushes the locking block 53 into the first limiting groove 55 on the frame body 1 and the second limiting groove 56 on the drive ring 51, realizing the stable locking of the seat assembly 2 relative to the frame body 1, ensuring the structural stability and safety of the stroller under normal use. The locking block 53 moves downward, disengaging from the first limiting groove 55, thereby releasing the rotation restriction of the seat assembly 2 relative to the frame body 1, thus realizing the smooth unlocking of the seat assembly 2. This greatly improves the convenience and humanized design level, while also ensuring the reliability of the locked state.

[0035] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the drive ring 51 is provided with an movable slot 511 for the locking block 53 to partially protrude outward from the drive ring 51.

[0036] In this embodiment, an active slot is provided on the drive ring for the lock block to protrude partially outward, so that the lock block can extend out of the drive ring at a specific position, thereby locking or releasing the corresponding component. Alternatively, the lock block can be manually pressed down by applying external force. This structural design not only ensures the guiding stability of the lock block during operation.

[0037] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, it also includes a connector 512 connected to the drive ring 51 and used to drive the drive ring 51 to rotate relative to the frame unlocking mechanism 6.

[0038] In this embodiment, the connector 512 can be a pull rope, which rotates the drive ring by pulling the rope. Alternatively, the seat assembly can be replaced by the connector, which rotates the drive ring by rotating the seat assembly. By setting a connector connected to the drive ring, which can be either a pull rope or a seat assembly, the drive ring can rotate flexibly under different operating modes, thereby driving the frame unlocking mechanism to operate. This structure not only expands the diversity of operating modes, making it easier for users to choose between pull rope or seat linkage drive according to actual needs, thus improving the adaptability and compatibility of the overall vehicle design, but also simplifies the transmission path, improves the response efficiency and reliability of the unlocking operation, and is conducive to achieving a compact and convenient integrated folding function.

[0039] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the frame unlocking mechanism 6 includes a joint unlocking slider 61 disposed on the frame body 1, and a joint locking pin 62 that obliquely engages with the joint unlocking slider 61. The drive ring 51 is provided with a drive abutment 63 for pushing the joint unlocking slider 61 to slide away from the drive ring 51. The frame body 1 is provided with a locking hole 64 for the joint locking pin 62 to be inserted. The joint locking pin 62 is inserted into the locking hole 64 to restrict the folding of the frame body 1.

[0040] In this embodiment, the frame unlocking mechanism 6, through the joint unlocking slider 61 and the joint locking pin 62 wedge-fitting it on the frame body 1, and combined with the driving abutment 63 on the drive ring 51, constitutes a compact, precise, and highly interconnected unlocking and limiting mechanism. When the seat assembly 2 starts to rotate, the driving abutment 63 on the drive ring 51 will move synchronously and push the joint unlocking slider 61 to slide away from the drive ring 51. Since the sliding process is wedge-fitting with the joint locking pin 62, it will drive the joint locking pin 62 to move axially, thereby pulling it out of the locking hole 64 on the frame body 1, realizing the unlocking of the frame body 1 folding action. With the locking pin inserted into the lock hole, the frame can be firmly restricted from unfolding, ensuring structural stability. The frame cannot be folded directly without operating the seat, improving the overall safety and preventing accidental operation. When the seat assembly rotates to fold, the unlocking slider is driven by the drive ring, and the locking pin is unlocked through the wedge linkage. This process not only links the frame unlocking action with the seat action, but also avoids the problem of having to manually operate the frame locking pin separately in traditional structures. This greatly simplifies the operation process and improves efficiency and user experience.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, the frame unlocking mechanism 6 further includes a third elastic element 65 disposed between the joint unlocking slider 61 and the frame body 1. The joint unlocking slider 61 is provided with a sliding groove 66 for the joint locking pin 62 to slide and engage, allowing the joint locking pin 62 to insert into or withdraw from the locking hole 64. When the drive ring 51 rotates, the drive abutment 63 presses down on the joint unlocking slider 61, causing the joint locking pin 62 to withdraw from the locking hole 64, thereby releasing the restriction on the frame body 1 to fold. The third elastic element 65 drives the joint unlocking slider 61 to slide back to its original position, causing the joint locking pin 62 to insert into the locking hole 64, thereby restricting the frame body 1 from folding.

[0042] In this embodiment, a linkage-type unlocking and locking structure with a self-resetting function is achieved by setting a third elastic element 65 between the joint unlocking slider 61 and the frame body 1, and forming a sliding groove 66 on the joint unlocking slider 61 for sliding engagement of the joint locking pin 62. When the seat assembly 2 rotates, the driving abutment 63 on the driving ring 51 simultaneously presses the joint unlocking slider 61 downward, causing the slider 61 to move along the sliding direction. The sliding groove 66 drives the joint locking pin 62, which is wedge-engaged with it, to slide axially, thereby causing the locking pin 62 to be pulled out of the lock hole 64 on the frame body 1, completing the unlocking operation of the frame in the unfolded state, making the frame body 1 possible to fold. When the seat assembly resets or no longer triggers the unlocking action, the third elastic element 65 will drive the joint unlocking slider 61 to slide back to its original position, thereby driving the locking pin 62 to re-insert into the lock hole 64, realizing the re-locking of the frame structure. In terms of operation, this structure enables the seat component rotation to trigger the frame unlocking action, allowing users to complete both unlocking steps with just one operation. This effectively improves the efficiency of the stroller folding process, reduces repetitive steps, and significantly enhances convenience. Secondly, the third elastic element 65 provides the structure with automatic reset capability, allowing the unlocking structure to automatically return to its original position and restore the locking function after operation without user intervention. This effectively avoids safety hazards such as structural loosening or accidental folding caused by forgetting to reset or improper operation.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation, the driving abutment 63 is disposed along the outer edge of the driving ring, and a first driving inclined surface 67 is provided on the driving abutment 63 near the joint unlocking slider 61, and a second driving inclined surface 68 is provided on the joint unlocking slider 61 to cooperate with the first driving inclined surface 67.

[0044] In this embodiment, when the seat assembly 2 rotates, causing the drive ring 51 to rotate, the drive abutment 63 moves accordingly. Its first drive ramp 67 gradually slides into and presses against the second drive ramp 68 on the joint unlocking slider 61. Utilizing the relative sliding and contact pressure between the ramps, the circular motion of the drive ring is effectively converted into the axial sliding of the joint unlocking slider 61, thereby causing the joint locking pin 62 to disengage from the locking hole 64, achieving smooth unlocking of the frame body 1. This structure, on the one hand, forms an adaptive contact through ramp engagement, ensuring smooth transmission and possessing a certain degree of self-positioning and self-alignment, effectively mitigating meshing problems caused by component manufacturing errors or installation deviations, and improving the reliability and consistency of the structural transmission. On the other hand, the wedge structure has the mechanical advantage of amplifying force, achieving a larger pushing stroke with a smaller driving force, helping to reduce user operating force and improve operating feel and user comfort.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the frame body 1 includes a connecting block 11, a rear leg assembly 12 connected to the connecting block 11, a front leg assembly 13 hinged to the connecting block 11 and a handlebar assembly 14, and a synchronization mechanism 15 for folding the front leg assembly 13 and the handlebar assembly 14 together towards the rear leg assembly 12.

[0046] In this embodiment, the front leg assembly 13 and the handlebar assembly 14 can simultaneously and collaboratively move towards the rear leg assembly 12 during the folding process, forming an integrated folding motion. When the user performs the folding operation, the synchronization mechanism 15 links the front leg assembly 13 and the handlebar assembly 14 through the mechanical transmission structure, so that the two move synchronously along the corresponding trajectory in the same amount of time, thereby achieving fast, simple, and symmetrical folding of the entire frame. This structure not only effectively improves folding efficiency and avoids the jamming, swaying, or chaotic operation caused by the individual movement of parts during the folding process of traditional children's vehicles, but also makes the frame shape more compact and regular after folding, which is convenient for storage and transportation, and improves the overall user experience and space utilization.

[0047] Furthermore, as a preferred embodiment of this solution and not a limitation, the synchronization mechanism 15 includes a connecting rod 151, a first connecting hole 152 on the front foot assembly 13 for inserting one end of the connecting rod 151, a second connecting hole 153 on the handle assembly 14 for inserting the other end of the connecting rod 151, and a first clearance groove 154 and a second clearance groove 155 on the connecting block 11 corresponding to the displacement trajectory of the first connecting hole 152 and the second clearance groove 155 corresponding to the displacement trajectory of the second connecting hole 153. The handle assembly 14 moves closer to the rear foot assembly 12, driving the connecting rod 151 to synchronously drive the front foot assembly 13 to move closer to the rear foot assembly 12; the front foot assembly 13 moves closer to the rear foot assembly 12, driving the connecting rod 151 to synchronously drive the handle assembly 14 to move closer to the rear foot assembly 12.

[0048] In this embodiment, a transmission connection is formed between the first connecting hole 152 and the second connecting hole 153 between the connecting rod 151 and the front foot assembly 13 and the handlebar assembly 14. A first clearance groove 154 and a second clearance groove 155 corresponding to the displacement trajectory of the two connecting holes are provided on the connecting block 11, thereby constructing a folding synchronization system with structural guidance function and bidirectional linkage capability. When the handlebar assembly 14 or the front foot assembly 13 moves towards the rear foot assembly 12, the transmission action of the connecting rod 151 can drive another component to move towards the rear foot assembly 12 synchronously, realizing bidirectional drive-type coordinated folding of the front foot assembly 13 and the handlebar assembly 14. This significantly improves the folding smoothness and consistency of the whole vehicle, avoiding the problems of step sequence disorder and jamming caused by the independent folding of multiple parts in the traditional structure. It allows the user to complete the folding action of the entire frame by pushing only one part, greatly improving the convenience and intelligence of operation. Meanwhile, the clearance slots 154 and 155 provide necessary spatial guidance for the connecting rod 151 during the folding motion, ensuring that the connecting rod maintains a reasonable movement path during the overall structural deformation process, avoiding deformation jamming caused by spatial interference or sliding offset, thereby improving the reliability of the structural movement.

[0049] The working principle of this embodiment is as follows:

[0050] This application discloses a children's stroller joint folding synchronous unlocking component. By linking the seat unlocking mechanism with the frame unlocking mechanism, it achieves synchronous folding of the seat assembly and the main frame. Compared with the traditional design that requires operating multiple buttons separately, it greatly simplifies the usage process and improves the convenience and efficiency of operation. Users only need to operate the seat unlocking mechanism to complete the folding of the seat and frame simultaneously, effectively reducing the risk of misoperation. In addition, this linked unlocking structure also reduces the number of independent buttons and related parts, optimizes the overall structure of the stroller, reduces manufacturing costs and the difficulty of later maintenance, and has high practicality and promotional value.

[0051] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A stroller joint folding and unlocking synchronous component, characterized in that, Includes a seat unlocking mechanism (5) for mounting the seat assembly (2), and a frame unlocking mechanism (6) connecting the seat unlocking mechanism (5) and the frame body (1). The seat unlocking mechanism (5) rotates relative to the frame unlocking mechanism (6) to drive the frame unlocking mechanism (6) to unlock the frame body (1) for folding.

2. The stroller joint folding and unlocking synchronous component according to claim 1, characterized in that, The seat unlocking mechanism (5) includes a drive ring (51) coaxially connected to the seat assembly (2) and a locking block (53) slidably disposed on the drive ring (51). The frame body (1) is provided with a first limiting groove (55) for the locking block (53) to be partially embedded. The drive ring (51) is provided with a second limiting groove (56) for the locking block (53) to be partially embedded. The locking block (53) is simultaneously embedded in the first limiting groove (55) and the second limiting groove (56) to restrict the seat unlocking mechanism (5) from rotating relative to the frame body (1).

3. A stroller joint folding and unlocking synchronous component according to claim 2, characterized in that, The seat unlocking mechanism (5) further includes a first elastic element (57) disposed between the locking block (53) and the drive ring (51). The locking block (53) is provided with a slot (59) for the seat assembly (2) and the frame body (1) to be coaxially connected. The first elastic element (57) drives the locking block (53) to be embedded in the first limiting slot (55) and the second limiting slot (56) to restrict the seat unlocking mechanism (5) from rotating relative to the frame body (1). When the locking block (53) moves downward away from the first limiting slot (55), the restriction on the seat unlocking mechanism (5) from rotating relative to the frame unlocking mechanism (6) is released.

4. A stroller joint folding and unlocking synchronous component according to claim 2, characterized in that, The drive ring (51) is provided with a movable slot (511) for the locking block (53) to partially protrude outward from the drive ring (51).

5. A stroller joint folding and unlocking synchronous component according to claim 2, characterized in that, It also includes a connector (512) connected to the drive ring (51) and used to drive the drive ring (51) to rotate relative to the frame unlocking mechanism (6).

6. A stroller joint folding and unlocking synchronous component according to claim 2, characterized in that, The frame unlocking mechanism (6) includes a joint unlocking slider (61) disposed on the frame body (1) and a joint locking pin (62) that cooperates obliquely with the joint unlocking slider (61). The drive ring (51) is provided with a drive abutment (63) for pushing the joint unlocking slider (61) to slide away from the drive ring (51). The frame body (1) is provided with a locking hole (64) for the joint locking pin (62) to be inserted. The joint locking pin (62) is inserted into the locking hole (64) to restrict the folding of the frame body (1).

7. A stroller joint folding and unlocking synchronous component according to claim 6, characterized in that, The frame unlocking mechanism (6) further includes a third elastic element (65) disposed between the joint unlocking slider (61) and the frame body (1). The joint unlocking slider (61) is provided with a sliding groove (66) for the joint locking pin (62) to slide and engage, allowing the joint locking pin (62) to insert or withdraw from the lock hole (64). When the drive ring (51) rotates, the drive abutment (63) presses down on the joint unlocking slider (61) to drive the joint locking pin (62) to withdraw from the lock hole (64), thereby releasing the restriction on the frame body (1) to fold. The third elastic element (65) drives the joint unlocking slider (61) to slide back to its original position, thereby driving the joint locking pin (62) to insert into the lock hole (64) to restrict the frame body (1) from folding.

8. A stroller joint folding and unlocking synchronous component according to claim 6, characterized in that, The driving abutment (63) is provided along the outer edge of the driving ring. The driving abutment (63) has a first driving slope (67) near the joint unlocking slider (61). The joint unlocking slider (61) has a second driving slope (68) that cooperates with the first driving slope (67).

9. A stroller joint folding and unlocking synchronous component according to claim 6, characterized in that, The frame body (1) includes a connecting block (11), a rear leg assembly (12) connected to the connecting block (11), a front leg assembly (13) hinged to the connecting block (11), and a handlebar assembly (14), as well as a synchronizing mechanism (15) for folding the front leg assembly (13) and the handlebar assembly (14) together towards the rear leg assembly (12).

10. A stroller joint folding and unlocking synchronous component according to claim 9, characterized in that, The synchronization mechanism (15) includes a connecting rod (151), a first connecting hole (152) on the front foot assembly (13) for inserting one end of the connecting rod (151), a second connecting hole (153) on the handle assembly (14) for inserting the other end of the connecting rod (151), a first clearance groove (154) on the connecting block (11) corresponding to the displacement trajectory of the first connecting hole (152), and a second clearance groove (155) corresponding to the displacement trajectory of the second connecting hole (153). The handle assembly (14) moves closer to the rear foot assembly (12), driving the connecting rod (151) to synchronously drive the front foot assembly (13) to move closer to the rear foot assembly (12); the front foot assembly (13) moves closer to the rear foot assembly (12), driving the connecting rod (151) to synchronously drive the handle assembly (14) to move closer to the rear foot assembly (12).

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