A child's pushchair foldable frame

Abstract

This utility model discloses a foldable stroller frame for children, including a back support and a lower support. The back support and the lower support are rotatably connected by a rotating component. A handlebar connecting seat is fixedly provided on the connecting end of the lower support and the handlebar connecting seat. A rotatable handlebar component is connected to the handlebar connecting seat. A movable locking fastener for rotatably unlocking or locking the handlebar component and the handlebar connecting seat is slidably installed between the handlebar component and the handlebar connecting seat. The lower support is provided with an unlocking part. When the back support and the lower support are folded and rotated, the unlocking part drives the movable locking fastener to rotate and unlock the handlebar component and the handlebar connecting seat. This utility model achieves the effect of rapid folding of the overall structure by pushing the unlocking part upward when rotating to unlock the rotation lock of the handlebar.

Description

Technical Field

[0001] This utility model relates to the field of baby strollers, and in particular to a foldable stroller frame for children. Background Technology

[0002] Existing foldable strollers typically fold the backrest and lower frame, while the front armrest is usually fixed. Folding requires removing the armrest first, which is quite cumbersome. Of course, there are also strollers with rotatable front armrests for easy folding, but folding requires manually unlocking the front armrest first. In other words, you need to manually unlock and fold the frame first, and then unlock and fold the front armrest, which is also quite cumbersome. Utility Model Content

[0003] The main purpose of this utility model is to provide a foldable stroller frame for children, which automatically unlocks the front armrest by manually unlocking the folding structure of the frame.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A foldable stroller frame includes a back support and a lower support, which are rotatably connected by a rotating assembly. The back support is fixedly provided with an armrest connector, and a rotatable armrest assembly is connected to the armrest connector. A movable locking fastener for rotatably unlocking or locking the armrest assembly and the armrest connector is slidably installed between the armrest assembly and the armrest connector. The lower support is provided with an unlocking part. When the back support and the lower support are folded and rotated, the unlocking part drives the movable locking fastener to rotate and unlock the armrest assembly and the armrest connector.

[0006] Furthermore, the handrail assembly includes a rotating connector, a handrail connector, and a handrail body. The handrail connector is fixedly connected to both ends of the handrail body. A locking male head is fixedly provided at the other end of the handrail connector. A locking groove is provided at one end of the rotating connector, and the locking male head is locked in the locking groove. The other end of the rotating connector is rotatably connected to the handrail connecting seat.

[0007] Furthermore, the rotating connector has an adjustment cavity, in which a movable locking device is slidably installed. A locking limit block is fixed on one side of the movable locking device, and an unlocking block is fixed on the other side. A limit cavity is provided on the armrest connector, in which a sliding connection groove is provided. The unlocking block is slidably disposed in the sliding connection groove and extends from the sliding connection groove to the outside of the limit cavity. The movable locking device is engaged in the limit cavity.

[0008] Furthermore, a locking groove is fixedly provided inside the adjustment cavity, and the locking limiting block is slidably installed in the locking groove. The number of locking grooves and locking limiting blocks is not less than two.

[0009] Furthermore, one end of the movable locking fastener is provided with two spring limiting protrusions, and a return spring is connected to the spring limiting protrusion. The other end of the return spring is connected to the inner wall of the limiting cavity.

[0010] Furthermore, a spring connecting groove is fixedly provided in the adjustment cavity, and an axial spring is slidably installed in the spring connecting groove. The two ends of the axial spring are respectively provided with reset connecting rods. The reset connecting rod at one end of the axial spring is fixedly connected to the rotating connecting piece, and the reset connecting rod at the other end of the axial spring is fixedly connected to the handrail connecting seat.

[0011] Furthermore, the unlocking part includes a beveled portion for guiding the unlocking block to rise and fall, and an unlocking support portion for supporting the unlocking block to maintain the unlocked state. The beveled portion and the unlocking support portion are integrally formed.

[0012] Furthermore, both the back support and the lower support are equipped with a handle unlocking assembly. The handle unlocking assembly includes a fixed base, a handle body, and an unlocking button. The handle body has a movable connecting groove, in which the unlocking button is slidably installed. The unlocking button has a guide hole, in which a rotating shaft is slidably installed. Both ends of the rotating shaft extend out of the handle body and are rotatably connected to the fixed base.

[0013] Furthermore, a reset spring is provided between the unlock button and the bottom of the active connection slot, and the number of such reset springs is not less than one.

[0014] Furthermore, the fixed base is fixedly connected to the back support or the lower support, the fixed base is provided with a wire groove, and the handle body is fixedly provided with a locking groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model unlocks the front armrest by pushing the unlocking part upward when rotating, thus achieving automatic unlocking of the front armrest and enabling the overall structure to fold quickly.

[0017] Meanwhile, by setting an unlock button on the handle, the accidental activation of the handle can be prevented from causing the vehicle to fold and unlock, thus providing protection against accidental activation when folding and unlocking the vehicle. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a three-dimensional enlarged view of the rotating component of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Another angle view;

[0021] Figure 4 This is a three-dimensional enlarged view of the interior of the rotating connector of this utility model;

[0022] Figure 5 This is a three-dimensional enlarged view of the rotating connector of this utility model;

[0023] Figure 6 This is a three-dimensional enlarged view of the movable locking device of this utility model;

[0024] Figure 7 This is a three-dimensional enlarged view of the handle unlocking component of this utility model;

[0025] Figure 8 This is a three-dimensional cross-sectional view of the handle unlocking component of this utility model;

[0026] Figure 9 This is a three-dimensional enlarged view of the back of the handle unlocking component of this utility model.

[0027] Figure Labels

[0028] 1. Backrest support; 2. Lower support; 3. Rotating assembly; 4. Handrail connector; 50. Handrail assembly; 51. Rotating connector; 52. Handrail connector; 6. Handrail body; 7. Adjustment cavity; 8. Movable locking component; 9. Locking limit block; 10. Unlocking block; 11. Limiting cavity; 12. Sliding connecting groove; 13. Unlocking part; 14. Locking groove; 15. Spring limiting protrusion; 16. Axial spring; 17. Reset connecting rod; 18. Angled part; 19. Unlocking holding part; 20. Handle unlocking assembly; 21. Fixed base; 22. Handle body; 23. Unlocking button; 24. Movable connecting groove; 25. Guide hole; 26. Wire groove; 27. Locking groove. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0030] See Figure 1 , Figure 7 and Figure 8As shown, a foldable stroller frame includes a back support 1 and a lower support 2, which are connected by a rotating assembly 3. The rotating assembly 3 enables the back support and lower support to be rotated and locked or rotated and unlocked. Both the back support 1 and the lower support 2 are equipped with a handle unlocking assembly 20, which includes a fixed base 21, a handle body 22, and an unlocking button 23. The handle body 22 has a movable connecting groove 24, within which the unlocking button 23 is slidably mounted. The upper side of the unlocking button 23 is slidably connected to the fixed base 21. A rounded chamfer is formed on the connection surface between the unlocking button 23 and the fixed base 21. The fixed base 21 has a guide arc groove. When the handle body 22 is at its maximum stroke in the movable connecting groove 24, the rounded chamfer matches the guide rounded groove. At this time, the handle body 22 can rotate around the rotating shaft, thereby pulling the pull rope to unlock the rotating component 3. The unlocking button 23 has a guide hole 25, and a rotating shaft is slidably installed in the guide hole 25. The two ends of the rotating shaft extend to the outside of the handle body 22 and are rotatably connected to the fixed base 21. The fixed base 21 is fixedly connected to the back support 1 or the lower support 2. The fixed base 21 has a wire groove 26, and the handle body 22 is fixedly provided with a locking groove 27. One end of the pull rope is fixedly installed in the locking groove 27, and the other end of the pull rope is the same as in the prior art: it enters the interior of the support along the wire groove 26 or is connected to the unlocking switch of the rotating component 3 along the support guide.

[0031] like Figure 9 As shown, a reset spring (not shown) for the unlock button 23 to pop up is provided between the bottom of the movable connecting groove 24 and the unlock button 23, and the number of such reset springs is not less than one.

[0032] like Figure 2-6 As shown, an armrest connector 4 extends from the back support, and a rotatable armrest assembly is mounted on the armrest connector 4. A movable locking fastener for rotating and unlocking or locking the armrest assembly and the armrest connector is slidably installed between the armrest assembly and the armrest connector. An unlocking part is provided on the lower support. When the back support and the lower support are folded and rotated, the unlocking part drives the movable locking fastener to rotate and unlock the armrest assembly and the armrest connector.

[0033] The handrail assembly includes a rotating connector, a handrail connector, and a handrail body. The handrail connector is fixedly connected to both ends of the handrail body. A locking male head is fixedly provided at the other end of the handrail connector. A locking groove is provided at one end of the rotating connector, and the locking male head is locked in the locking groove. The other end of the rotating connector is rotatably connected to the handrail connecting seat.

[0034] An adjustment cavity 7 is provided on the end face of the rotating connector and the armrest connecting seat. A movable locking member 8 is slidably installed in the adjustment cavity 7. The movable locking member 8 is used for the rotation locking or unlocking of the rotating connector 5. A locking limit block 9 is fixed on one side of the movable locking member 8, and an unlocking block 10 is fixed on the other side. A limit cavity 11 is provided on the armrest connecting seat 4. A sliding connecting groove 12 is provided in the limit cavity 11. The unlocking block 10 is slidably disposed in the connecting groove and extends out from the connecting groove. The movable locking member 8 is locked in the limit cavity 11 and will not rotate with the rotation of the rotating connector 5. The angle of the movable locking member 8 is fixed and can move longitudinally along the limit cavity 11. An unlocking part 13 is provided on the rotating component 3. The unlocking part 13 is slidably connected to the unlocking block 10.

[0035] The unlocking part 13 includes a sloped part 18 for guiding the lifting of the unlocking block 10 and an unlocking support part 19 for supporting the unlocking block 10 to maintain the unlocked state. The sloped part 18 and the unlocking support part 19 are integrally formed.

[0036] When the rotating component 3 rotates, the inclined part 18 of the unlocking part 13 of the lower bracket will gradually push up the unlocking block 10 until the unlocking block 10 is at its maximum stroke and the height of the unlocking block 10 is maintained by the unlocking holding part 19. During this process, the locking limit block 9 will move in the sliding connecting groove 12 along the A direction until it falls into the movement requirement in the B direction. At this time, the rotating connector 5 is in the rotating unlocking state and can rotate along the B direction due to the pressure of the back bracket 1 and the lower bracket 2.

[0037] The adjustment cavity 7 is fixedly provided with a locking groove 14, and the locking limiting block 9 is slidably installed in the locking groove 14. The number of locking grooves 14 and locking limiting blocks 9 is not less than two.

[0038] The arrangement of the two locking slots 14 and the locking limit block 9 is more stable.

[0039] One end of the movable locking device 8 is provided with two spring limiting protrusions 15, and a return spring is connected to the spring limiting protrusion 15. The other end of the return spring is connected to the inner wall of the limiting cavity 11. When the vehicle is unfolded, the locking limiting block 9 rotates in the opposite direction of B and falls into the travel of A. It then falls back to the locking point in the direction of A through the return spring.

[0040] The adjustment cavity 7 is also fixedly provided with a spring connecting groove, in which an axial spring 16 is slidably installed. The two ends of the axial spring 16 are respectively provided with reset connecting rods 17. The reset connecting rod 17 at one end of the axial spring 16 is fixedly connected to the rotating connecting piece 5, and the reset connecting rod 17 at the other end of the axial spring 16 is fixedly connected to the handrail connecting seat 4.

[0041] Axial spring 16 is used for the rotational return of rotary connector 5.

[0042] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A foldable stroller frame for children, comprising a back support (1) and a lower support (2), wherein the back support (1) and the lower support (2) are rotatably connected by a rotating assembly (3), and a handlebar connecting seat (4) is fixedly provided on the back support (1), wherein a rotatable handlebar assembly (50) is connected to the handlebar connecting seat (4), characterized in that: The armrest assembly (50) and the armrest connecting seat (4) are slidably installed with a movable locking fastener (8) for rotating and unlocking or locking the armrest assembly (50) and the armrest connecting seat (4). The lower bracket (2) is provided with an unlocking part (13). When the back bracket (1) and the lower bracket (2) are folded and rotated, the unlocking part (13) drives the movable locking fastener (8) to rotate and unlock the armrest assembly (50) and the armrest connecting seat (4).

2. The foldable stroller frame according to claim 1, characterized in that: The handrail assembly (50) includes a rotating connector (51), a handrail connector (52), and a handrail body (6). The two ends of the handrail body (6) are respectively fixedly connected to the handrail connector (52). The other end of the handrail connector (52) is fixedly provided with a locking male head. One end of the rotating connector (51) is provided with a locking groove (27), and the locking male head is locked in the locking groove (27). The other end of the rotating connector (51) is rotatably connected to the handrail connecting seat (4).

3. The foldable stroller frame according to claim 2, characterized in that: The rotating connector (51) has an adjustment cavity (7) inside, and a movable locking fastener (8) is slidably installed in the adjustment cavity (7). A locking limit block (9) is fixed on one side of the movable locking fastener (8), and an unlocking block (10) is fixed on the other side of the movable locking fastener (8). A limit cavity (11) is opened on the armrest connecting seat (4), and a sliding connecting groove (12) is opened in the limit cavity (11). The unlocking block (10) is slidably installed in the sliding connecting groove (12), and the unlocking block (10) extends from the sliding connecting groove (12) to the outside of the limit cavity (11). The movable locking fastener (8) is locked in the limit cavity (11).

4. The foldable stroller frame according to claim 3, characterized in that: The adjustment cavity (7) is fixedly provided with a locking groove (14), and the locking limiting block (9) is slidably installed in the locking groove (14). The number of locking grooves (14) and locking limiting blocks (9) is not less than two.

5. A foldable stroller frame according to claim 3, characterized in that: One end of the movable locking fastener (8) is provided with two spring limiting protrusions (15), and a reset spring is connected to the spring limiting protrusions (15). The other end of the reset spring is connected to the inner wall of the limiting cavity (11).

6. A foldable stroller frame according to claim 3, characterized in that: The adjustment cavity (7) is also fixedly provided with a spring connecting groove, and an axial spring (16) is slidably installed in the spring connecting groove. The two ends of the axial spring (16) are respectively provided with reset connecting rods (17). The reset connecting rod (17) at one end of the axial spring (16) is fixedly connected to the rotating connector (51), and the reset connecting rod (17) at the other end of the axial spring (16) is fixedly connected to the handrail connecting seat (4).

7. A foldable stroller frame according to claim 3, characterized in that: The unlocking part (13) includes a beveled part (18) for guiding the lifting of the unlocking block (10) and an unlocking support part (19) for supporting the unlocking block (10) to maintain the unlocked state. The beveled part (18) and the unlocking support part (19) are integrally formed.

8. A foldable stroller frame according to claim 1, characterized in that: Both the back support (1) and the lower support (2) are equipped with handle unlocking components (20). The handle unlocking components (20) include a fixed base (21), a handle body (22) and an unlocking button (23). The handle body (22) has a movable connecting groove (24). The unlocking button (23) is slidably installed in the movable connecting groove (24). The unlocking button (23) has a guide hole (25). A rotating shaft is slidably installed in the guide hole (25). The two ends of the rotating shaft extend to the outside of the handle body (22) and are rotatably connected to the fixed base (21).

9. A foldable stroller frame according to claim 8, characterized in that: A reset spring is provided between the unlock button (23) and the bottom of the movable connecting groove (24), and the number of the reset springs is not less than one.

10. A foldable stroller frame according to claim 8, characterized in that: The fixed base (21) is fixedly connected to the back support (1) or the lower support (2). The fixed base (21) is provided with a wire groove (26), and the handle body (22) is provided with a locking groove (27).

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