Handlebar joint structure and stroller framework

Abstract

The utility model discloses a handle joint structure which comprises a handle connecting seat and a supporting rod connecting seat rotatably connected with the handle connecting seat, a clamping and locking groove is formed in the supporting rod connecting seat, a clamping and locking block which can slide in the handle connecting seat and can be clamped with or separated from the clamping and locking groove is arranged in the handle connecting seat, a sliding rod which can slide in the supporting rod connecting seat is arranged in the supporting rod connecting seat, and the sliding rod is connected with the supporting rod connecting seat. The upper end of the sliding rod is provided with an extending shaft extending transversely, and the handle connecting base is provided with a driving groove which allows the extending shaft to extend therein and can push the extending shaft to drive the sliding rod to slide upwards when the handle connecting base rotates and is folded relative to the supporting rod connecting base. And a torsional spring capable of pushing the handle connecting seat to automatically rotate and fold relative to the supporting rod connecting seat when the clamping and locking block is separated from the clamping and locking groove is also arranged between the handle connecting seat and the supporting rod connecting seat. The utility model further discloses a stroller framework adopting the handle joint structure. The handle joint structure and the stroller framework are simple in structure and convenient to fold and operate.

Description

Technical field

[0001] The utility model relates to a handle joint structure and a child stroller frame. [Background Technology]

[0002] Strollers are a common accessory for infants and young children as they grow. Current strollers are generally designed to be either unfolded or folded. In the unfolded position, infants and young children can sit or lie in the seat for travel, while the folded position allows for easy storage or portability. The stroller frame is a key component, typically comprising a base support frame, support rods, a handle, and a locking mechanism for locking the stroller in the unfolded position. However, when folding a conventional stroller frame, the locking mechanism is complex to unlock, making it difficult to do so with one hand, resulting in inconvenience.

[0003] Therefore, the present invention is just based on above deficiency and produces. [Utility Model Content]

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a handle joint structure with a simple structure. The child stroller frame using the handle joint structure can be unlocked with one hand, that is, the child stroller frame can be folded with one hand, making the child stroller more convenient to use.

[0005] The utility model also provides a child stroller frame with a simple structure and convenient folding operation.

[0006] The utility model is realized through the following technical solutions:

[0007] A handle joint structure, characterized in that it includes a handle connecting seat and a strut connecting seat rotatably connected to the handle connecting seat, the strut connecting seat is provided with a locking groove, the handle connecting seat is provided with a locking block that can slide therein and can engage or disengage with the locking groove, the strut connecting seat is provided with a sliding rod that can slide therein, the upper end of the sliding rod is provided with a transversely extending extension shaft, the handle connecting seat is provided with a driving groove for the extension shaft to extend into it and can push the extension shaft to drive the sliding rod to slide upward when the handle connecting seat is rotated and folded relative to the strut connecting seat, and a torsion spring is also provided between the handle connecting seat and the strut connecting seat, which can push the handle connecting seat to automatically rotate and fold relative to the strut connecting seat when the locking block disengages from the locking groove.

[0008] The driving groove includes an upper groove wall and a lower groove wall, the extension shaft is inserted between the upper groove wall and the lower groove wall and abuts against the lower groove wall, the driving groove has a starting end and an end end, and along the direction from the starting end to the end end, the distance L between the lower groove wall and the rotation axis of the handle connecting seat gradually decreases.

[0009] The handle connecting seat is also provided with a clearance groove connected to the driving groove. The clearance groove includes a first groove wall connected to the upper groove wall at the terminal end and a second groove wall connected to the lower groove wall, and the distance between the second groove wall and the rotation axis of the handle connecting seat is equal to the distance between the lower groove wall at the terminal end and the rotation axis of the handle connecting seat.

[0010] A shed pole connecting seat that can rotate relative to the handle connecting seat is provided on the inner side of the handle connecting seat, and a positioning structure that can locate the position of the shed pole connecting seat is provided between the shed pole connecting seat and the handle connecting seat. The positioning structure includes at least two positioning holes provided on the handle connecting seat along the circumferential direction, and a positioning pin that can move laterally therein is provided in the shed pole connecting seat. A first reset spring that pushes the positioning pin to slide and reset is provided between the positioning pin and the shed pole connecting seat, and the end of the positioning pin is provided with an arc surface that can be squeezed by the edge of the positioning hole.

[0011] The handle connecting seat is provided with an arc groove, and at least two positioning holes are provided at both ends of the bottom of the arc groove. The shed pole connecting seat is provided with a protruding seat extending into the arc groove, and the positioning pin is provided in the protruding seat.

[0012] The yoke is secured to the bottom of the stroller frame by means of a lever, which is secured to the bottom of the stroller frame by means of a lever, which is secured to the bottom of the stroller frame by means of a lever, which is secured to the bottom of the stroller frame by means of a lever.

[0013] The operating part includes an operating button arranged on the hand push handle, a first pull rope that can pull the locking block to move is provided between the operating button and the locking block, and a third reset spring that can push the locking block to slide and reset is provided between the handle connecting seat or the hand push handle and the locking block.

[0014] The linkage member is a second pull rope, one end of which is connected to the locking device, and the other end is connected to the lower end of the sliding rod.

[0015] The front legs, rear legs and support rods are coaxially connected.

[0016] The bottom support frame is also connected to a seat assembly which can be rotated and unfolded or rotated and folded relative to the bottom support frame. The seat assembly includes a seat portion and an armrest which can be rotated relative to the bottom support frame.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. When the handle joint structure of the present invention is folded, the locking block in the handle connecting seat only needs to be disengaged from the locking groove on the support rod connecting seat. Once disengaged, the torsion spring elastically resets, allowing the handle connecting seat to automatically rotate and fold relative to the support rod connecting seat. During this process, the groove wall of the driving groove on the handle rotating seat can also push the extension shaft, thereby causing the sliding rod to slide upward within the support rod connecting seat. When the handle joint structure of the present invention is assembled and applied to a child stroller frame, the upward sliding rod can pull the locking device between the bottom support frame and the support rod through a linkage to unlock. Once the locking device is unlocked, the child stroller frame can be folded. Therefore, when the child stroller frame is folded, it is only necessary to operate the locking block to disengage from the locking groove through the operating member on the handle rod. At this time, the handle rod automatically rotates closer to the support rod. During this process, the sliding rod moves upward, driving the locking device to unlock through the linkage, thereby achieving folding of the child stroller frame. The user can complete the folding operation in one go with one hand, which is very convenient to use.

[0019] 2. When the handlebar connector of the present invention is rotated and folded relative to the strut connector, the distance L between the lower groove wall and the handlebar connector's rotation axis gradually decreases from the starting end to the end end. Therefore, during the handlebar connector's rotation, the lower groove wall pushes the extension shaft upward, thereby moving the sliding rod upward, achieving linkage between the handlebar connector and the sliding rod. This is an ingenious design.

[0020] 3. When the handlebar connector of the present invention rotates relative to the strut connector and the extension shaft enters the clearance groove from the terminal end, the distance between the second groove wall of the clearance groove and the handlebar connector's rotation axis is equal to the distance between the lower groove wall at the terminal end and the handlebar connector's rotation axis. Therefore, when the handlebar connector continues to rotate and fold, the second groove wall no longer pushes upward against the extension shaft. At this time, the sliding rod no longer moves relative to the strut connector, and the unlocked state of the locking device is maintained. Moreover, when the handlebar connector rotates a certain angle, the sliding rod pulls the linkage to unlock the locking device. This also prevents the sliding rod from moving too long due to the wide range of rotation of the handlebar connector, thereby ensuring structural stability or avoiding structural interference.

[0021] 4. The handle joint structure and the child stroller frame structure of the utility model are simple, realize linkage, and are easy to fold and operate, and are suitable for popularization and application.

Brief Description of the Drawings

[0022] Figure 1 This is a three-dimensional diagram of the handle joint structure of the utility model;

[0023] Figure 2 This is a cross-sectional view of the handle joint structure of the utility model;

[0024] Figure 3 This is one of the exploded views of the components of the child stroller frame of the present invention;

[0025] Figure 4 This is the second exploded view of the components of the child stroller frame of the present invention;

[0026] Figure 5 It is a side view of the handlebar connecting seat of the utility model;

[0027] Figure 6 This is a side view of the utility model stroller frame in an unfolded state;

[0028] Figure 7 This is one of the side views of the utility model stroller frame during folding;

[0029] Figure 8 This is the second side view of the child stroller frame during the folding process of the utility model;

[0030] Figure 9 It is a side view of the frame of the child stroller of the utility model in the folded state. [Specific implementation method]

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] like Figures 1 to 9As shown, a handle joint structure 2 includes a handle connecting seat 21 and a strut connecting seat 22 rotatably connected to the handle connecting seat 21, the strut connecting seat 22 is provided with a locking groove 23, the handle connecting seat 21 is provided with a locking block 24 which can slide therein and engage or disengage with the locking groove 23, the strut connecting seat 22 is provided with a sliding rod 25 which can slide therein, and the upper end of the sliding rod 25 is provided with a transversely extending extension shaft 26. The handle connecting seat 21 is provided with a driving groove 27 for the extension shaft 26 to extend therein and which can push the extension shaft 26 to drive the sliding rod 25 to slide upward when the handle connecting seat 21 is rotated and folded relative to the strut connecting seat 22. A torsion spring 28 is also provided between the handle connecting seat 21 and the strut connecting seat 22, which can push the handle connecting seat 21 to automatically rotate and fold relative to the strut connecting seat 22 when the locking block 24 disengages from the locking groove 23. When the handle joint structure 2 is assembled and applied to the stroller frame, the locking block 24 is first operated to disengage from the locking slot 23. Once disengaged, the handle connecting base 21 rotates and folds relative to the strut connecting base 22 under the action of the torsion spring 28. During the rotation process, the wall of the driving slot 27 on the handle connecting base 21 pushes the extension shaft 26 upward, which in turn drives the sliding rod 25 upward. The upward sliding rod 25 can then be pulled by the linkage 4 on the stroller frame to unlock the locking device between the bottom support frame 1 and the strut 3. Once the locking device is unlocked, the stroller frame can be folded. Therefore, when the stroller frame is folded, the locking block 24 can be disengaged from the locking slot 23 by the operating member 7 on the handle bar 6, so that the handle bar 6 can automatically rotate toward the strut 3. During this process, the sliding rod 25 moves upward, driving the locking device to unlock via the linkage 4, and the stroller frame can be folded. The user can fold the stroller frame in one go, making the operation very convenient and quick.

[0033] like Figure 2 and Figure 5 As shown, the drive slot 27 includes an upper slot wall 271 and a lower slot wall 272. The extension shaft 26 is inserted between the upper slot wall 271 and the lower slot wall 272 and abuts against the lower slot wall 272. The drive slot 27 has a starting end 27a and an ending end 27b. From the starting end 27a to the ending end 27b, the distance L between the lower slot wall 272 and the rotation axis of the handlebar connector 21 gradually decreases. Therefore, during the rotation of the handlebar connector 21, the lower slot wall 272 can push the extension shaft 26 upward, thereby moving the sliding rod 25 upward, achieving a linkage with the sliding rod 25, and facilitating the sliding rod 25 to unlock the locking device of the child stroller frame. This is an ingenious design.

[0034] like Figure 2 and Figure 5As shown, the handle connecting seat 21 is also provided with a clearance groove 29 that is connected to the driving groove 27. The clearance groove 29 includes a first groove wall 291 connected to the upper groove wall 271 at the terminal end 27b and a second groove wall 292 connected to the lower groove wall 272, and the distance between the second groove wall 292 and the rotation axis of the handle connecting seat 21 is equal to the distance between the lower groove wall 292 and the rotation axis of the handle connecting seat 21 at the terminal end 272. After the handlebar connecting base 21 rotates a certain angle relative to the strut connecting base 22 (approximately 90 degrees in this embodiment), the extension shaft 26 enters the clearance groove 29 from the terminal end 27b. Since the distance between the second groove wall 292 of the clearance groove 29 and the rotation axis of the handlebar connecting base 21 is equal to the distance between the lower groove wall 272 at the terminal end 27b and the rotation axis of the handlebar connecting base 21, when the handlebar connecting base 21 continues to rotate and fold, the second groove wall 292 no longer pushes the extension shaft 26 upward. At this time, the sliding rod 25 no longer moves relative to the strut connecting base 22, and the unlocked state of the locking device can be maintained. Moreover, when the handlebar connecting base 21 rotates a certain angle (approximately 90 degrees in this embodiment), the sliding rod 25 can be pulled to unlock the locking device by pulling the linkage member 4. This can also prevent the sliding rod 25 from moving too long due to the large rotation angle range of the handlebar connecting base 21, thereby ensuring structural stability or avoiding structural interference.

[0035] like Figure 3 、 Figure 4 and Figure 6 As shown, the inner side of the handle connecting seat 21 is provided with a shed pole connecting seat 20 that can rotate relative to it, and the shed pole 205 supporting the ceiling can be inserted into the shed pole connecting seat 20, and a positioning structure that can position the shed pole connecting seat 20 is provided between the shed pole connecting seat 20 and the handle connecting seat 21. The positioning structure includes at least two positioning holes 201 provided on the handle connecting seat 21 along the circumferential direction, and a positioning pin 202 that can move laterally therein is provided in the shed pole connecting seat 20, and a first return spring 203 that pushes the positioning pin 202 to slide and return is provided between the positioning pin 202 and the shed pole connecting seat 20, and the end of the positioning pin 202 is provided with an arc surface that can be squeezed by the edge of the positioning hole 201. When the roof of the stroller needs to be opened or folded, it is only necessary to pull the roof rod 205, and the edge of the positioning hole 201 will squeeze the arc surface of the end of the positioning pin 202, so that the positioning pin 202 will exit the positioning hole 201. When the roof rod connecting seat 20 rotates to face the other positioning hole 201, the first return spring 203 pushes the positioning pin 203 to return to its original position, and the positioning pin 203 is stuck in the other positioning hole 201, thereby realizing the positioning of the roof rod connecting seat 20, so that the roof is in the expanded or folded state.

[0036] like Figure 4As shown, the handle connecting base 21 is provided with an arcuate groove 211, and at least two positioning holes 201 are provided at both ends of the bottom of the arcuate groove 211. The shed pole connecting base 20 is provided with a protruding seat 204 extending into the arcuate groove 211, and the positioning pin 202 is disposed in the protruding seat 204. The protruding seat 204 can abut against the arcuate groove 211, thereby limiting the rotation angle of the shed pole connecting base 21.

[0037] like Figures 1 to 9 As shown, a child stroller frame includes a bottom support frame 1, the bottom support frame 1 includes a front leg 11 and a rear leg 12 rotatably connected to the front leg 11 around a first axis A, the lower ends of the front leg 11 and the rear leg 12 are provided with wheels 13, and the upper end of the bottom support frame 1 is rotatably connected to a support rod 3 around a second axis B. In this embodiment, the front leg 11, the rear leg 12 and the support rod 3 are coaxially connected. The upper end of the support rod 3 is connected to the handle joint structure 2 as described above, and the upper end of the support rod 3 is fixedly connected to the support rod connecting seat 22. A locking device is provided between the bottom support frame 1 and the lower end of the support rod 3. A linkage part 4 is provided between the locking device and the sliding rod 25, which can drive the locking device to unlock when the sliding rod 25 slides upward. The linkage part 4 is a second pull rope, one end of the pull rope is connected to the locking device, and the other end is connected to the lower end of the sliding rod 25. A second return spring 5 that can push the sliding rod 25 to return to its original position is also provided in the support rod 3 or the support rod connecting seat 22. A hand push handle 6 is connected to the upper end of the handle connecting seat 21, and an operating part 7 that can drive the locking block 24 to disengage from the locking groove 23 is provided on the hand push handle 6. When the stroller frame needs to be folded, the locking block 24 is disengaged from the locking slot 23 via the operating member 7. The handlebar connector 21, under the action of the torsion spring 28, rotates and folds relative to the strut connector 22. During this rotation, the sliding rod 25 is driven upward via the drive slot 27. When the push handle 6 rotates to approximately 90 degrees, the sliding rod 25 unlocks the locking mechanism via the linkage 4. As the push handle 6 continues to rotate, the extension shaft 26 is positioned within the clearance slot 29, maintaining the unlocked state of the locking mechanism. During this process, the bottom support frame 1 and strut 3 also rotate relative to each other, moving closer together, and ultimately, the push handle 6 is folded onto the strut 3. The entire folding operation can be performed with one hand, and the sliding rod 25 is driven by the drive slot 27 on the handlebar connector 21, providing flexibility and reliability. In this embodiment, the specific structure of the locking mechanism is not essential to the present invention; a conventional gear-engaging structure can be employed, and will not be described in detail here. Of course, the locking device may also adopt a block and slot structure similar to the locking block 24 and the locking slot 23. When the sliding rod 25 moves upward, the second pull rope is used to pull the block and the slot apart, thereby achieving unlocking.

[0038] like Figure 3 and Figure 4As shown, the operating member 7 includes an operating button (not shown) provided on the hand push handle 6. A first pull cord 71 capable of pulling the locking block 24 to move is provided between the operating button and the locking block 24. A third return spring 72 capable of pushing the locking block 24 to slide and return to its original position is provided between the handle connecting base 21 or the hand push handle 6 and the locking block 24. When the button is pressed, the button pulls the first pull cord 71, which in turn pulls the locking block 24 to move, thereby disengaging the locking block 24 from the locking groove 23.

[0039] like Figure 6 As shown, the bottom support frame 1 is further connected to a seat assembly 8 that can be rotated and unfolded or rotated and folded relative to the bottom support frame 1. The seat assembly 8 includes a seat portion 81 and an armrest 82 that can be rotated relative to the bottom support frame 1.

[0040] The embodiment is described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiment. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the present invention.

Claims

1. A handle joint structure (2), characterized in that: The invention comprises a handlebar connecting seat (21) and a strut connecting seat (22) rotatably connected to the handlebar connecting seat (21), wherein the strut connecting seat (22) is provided with a locking groove (23), wherein the handlebar connecting seat (21) is provided with a locking block (24) which can slide therein and can engage or disengage with the locking groove (23), wherein the strut connecting seat (22) is provided with a sliding rod (25) which can slide therein, wherein the upper end of the sliding rod (25) is provided with a transversely extending extension shaft (26), wherein the The handle connecting seat (21) is provided with a driving groove (27) for the extension shaft (26) to extend therein and can push the extension shaft (26) to drive the sliding rod (25) to slide upward when the handle connecting seat (21) is rotated and folded relative to the support rod connecting seat (22). A torsion spring (28) is also provided between the handle connecting seat (21) and the support rod connecting seat (22) and can push the handle connecting seat (21) to automatically rotate and fold relative to the support rod connecting seat (22) when the locking block (24) is disengaged from the locking groove (23).

2. The handle joint structure according to claim 1, characterized in that: The driving groove (27) includes an upper groove wall (271) and a lower groove wall (272); the extension shaft (26) is inserted between the upper groove wall (271) and the lower groove wall (272) and abuts against the lower groove wall (272); the driving groove (27) has a starting end (27a) and an end end (27b); and along the direction from the starting end (27a) to the end end (27b), the distance L between the lower groove wall (272) and the rotation axis of the handle connecting seat (21) gradually decreases.

3. The handle joint structure according to claim 2, characterized in that: The handle connecting seat (21) is further provided with a clearance groove (29) connected to the driving groove (27). The clearance groove (29) includes a first groove wall (291) connected to the upper groove wall (271) at the terminal end (27b) and a second groove wall (292) connected to the lower groove wall (272). In addition, the distance between the second groove wall (292) and the rotation axis of the handle connecting seat (21) is equal to the distance between the lower groove wall (292) and the rotation axis of the handle connecting seat (21) at the terminal end (272).

4. The handle joint structure according to claim 1, characterized in that: The handle connecting seat (21) is provided with a trellis connecting seat (20) which can rotate relative to the handle connecting seat (21), and a positioning structure which can locate the position of the trellis connecting seat (20) is provided between the trellis connecting seat (20) and the handle connecting seat (21), and the positioning structure includes at least two positioning holes (201) provided on the handle connecting seat (21) along the circumferential direction, and a positioning pin (202) which can move laterally therein is provided in the trellis connecting seat (20), and a first return spring (203) which pushes the positioning pin (202) to slide and return is provided between the positioning pin (202) and the trellis connecting seat (20), and the end of the positioning pin (202) is provided with an arc surface which can be squeezed by the edge of the positioning hole (201).

5. The handle joint structure according to claim 4, characterized in that: The handle connecting seat (21) is provided with an arc-shaped groove (211), and at least two positioning holes (201) are provided at both ends of the bottom of the arc-shaped groove (211); the shed pole connecting seat (20) is provided with a protruding seat (204) extending into the arc-shaped groove (211), and the positioning pin (202) is provided in the protruding seat (204).

6. A child stroller frame, characterized by: The invention comprises a bottom support frame (1), wherein the bottom support frame (1) comprises a front leg (11) and a rear leg (12) rotatably connected to the front leg (11) around a first axis (A), the lower ends of the front leg (11) and the rear leg (12) are provided with wheels (13), the upper end of the bottom support frame (1) is rotatably connected to a support rod (3) around a second axis (B), the upper end of the support rod (3) is connected to the handlebar joint structure (2) according to any one of claims 1 to 5, the upper end of the support rod (3) is fixedly connected to the support rod connecting seat (22), and the A locking device is provided between the bottom support frame (1) and the lower end of the support rod (3); a linkage member (4) is provided between the locking device and the sliding rod (25) and can drive the locking device to unlock when the sliding rod (25) slides upward; a second reset spring (5) is also provided in the support rod (3) or the support rod connecting seat (22) and can push the sliding rod (25) to reset; a hand push handle (6) is connected to the upper end of the handle connecting seat (21); an operating member (7) is provided on the hand push handle (6) and can drive the locking block (24) to disengage from the locking groove (23).

7. The stroller frame according to claim 6, characterized in that: The operating member (7) includes an operating button provided on the hand push handle (6), a first pull rope (71) capable of pulling the locking block (24) to move is provided between the operating button and the locking block (24), and a third return spring (72) capable of pushing the locking block (24) to slide and return is provided between the handle connecting seat (21) or the hand push handle (6) and the locking block (24).

8. The stroller frame according to claim 7, characterized in that: The linkage member (4) is a second pull rope, one end of which is connected to the locking device, and the other end is connected to the lower end of the sliding rod (25).

9. The stroller frame according to claim 6, characterized in that: The front leg (11), the rear leg (12) and the support rod (3) are coaxially connected.

10. The stroller frame according to claim 6, characterized in that: The bottom support frame (1) is also connected to a seat assembly (8) that can be rotated and unfolded or rotated and folded relative to the bottom support frame. The seat assembly (8) includes a seat portion (81) and an armrest (82) that can be rotated relative to the bottom support frame (1).

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