Folding device locking structure

Abstract

The utility model discloses a folder locking structure, which comprises a folding upper seat and a folding lower seat, the folding lower seat is rotatably connected with the folding upper seat, the folding upper seat is provided with a lock tongue, the folding lower seat is provided with a wrench rotatably connected with the folding upper seat, the wrench is provided with a hook matched with the lock tongue for locking, and the hook is provided with a lock tongue. The folding lower seat is provided with a cam shaft in running fit, the cam shaft is fixedly connected with the wrench, the cam shaft is provided with a cam part acting on the hook, and the wrench is provided with a cam path groove matched with the cam part. And when the wrench rotates outwards to an unlocking position, the cam part drives the hook and the spring bolt to release the locking state through the cam path groove. The utility model aims to improve the reliability of the hook in the locking and unlocking processes through the matching design of the cam part of the cam shaft and the cam path groove of the hook.

Description

Technical Field

[0001] The utility model belongs to the technical field of folding bicycle parts, and in particular relates to a folder locking structure. Background Art

[0002] In order to reduce the overall size of the folded body, the folding scooters and folding bicycles currently on the market usually consider folding the handlebar stem, so the corresponding position of the handlebar stem involves a folding structure. For example, Chinese patent publication number: CN219989425U discloses a folding structure for a scooter, which can drive the hook to release the locked state of the folding structure by opening the wrench, thereby facilitating the folding of the stem. However, since the wrench drives the hook to move through the eccentric wheel, the hook will be disengaged before the wrench is fully rotated to the unlocking position, which is easy to trigger unlocking due to misoperation, so the reliability of the locking is difficult to ensure. Utility Model Content

[0003] The utility model provides a folder locking structure, which improves the reliability of the hook in the locking and unlocking process through the matching design of the cam part of the cam shaft and the cam path groove of the hook.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A folder locking structure comprises a folding upper seat and a folding lower seat, wherein the folding lower seat is rotatably connected with the folding upper seat, the folding upper seat is provided with a locking tongue, the folding lower seat is provided with a rotatably connected wrench, the wrench is provided with a hook that cooperates with the locking tongue to lock, the folding lower seat is provided with a rotatably matched cam shaft, the cam shaft is fixedly connected with the wrench, the cam shaft is provided with a cam portion that acts on the hook, the wrench is provided with a cam path groove that cooperates with the cam portion, and when the wrench is rotated outward to an unlocking position, the cam portion drives the hook and the locking tongue to release the locking state through the cam path groove. In this way, the wrench drives the cam shaft to rotate synchronously during the process of rotating outward to open, the cam portion is arranged in the cam path groove, and the hook can be driven to move and disengage from the locking tongue only when the wrench is rotated to the unlocking position, so as to prevent the wrench from directly triggering the unlocking process of the hook in the initial rotation stroke, and can effectively ensure the stability of the hook movement process, thereby ensuring the stability and reliability of the unlocking process.

[0006] Preferably, the cam portion includes an arc surface and a convex surface protruding from the arc surface. The cam path groove includes a guiding surface in contact with the arc surface and an abutting surface in contact with the convex surface. When the convex surface acts on the abutting surface, the cam portion drives the hook to move in a direction away from the locking tongue. During the rotation of the cam portion, the arc surface of the cam portion moves along the guiding surface of the cam path groove. After the convex surface of the cam portion contacts the abutting surface of the cam path groove, the cam portion will drive the hook to move and release the locking state with the locking tongue. And as the wrench is further rotated, it will drive the hook to also rotate outwards and separate from the locking tongue, so as to facilitate the relative rotation of the folding upper seat and the folding lower seat to complete the folding process.

[0007] Preferably, a torsion spring is provided between the folding lower seat and the hook, and the torsion spring drives the hook to rotate inwards to lock with the locking tongue. The torsion spring can keep the hook and the locking tongue in the locked state to ensure the stability of locking.

[0008] Preferably, a locking tongue fixing screw connected to the folding upper seat is provided in the middle of the locking tongue, and a locking tongue adjusting screw for changing the height of the outer end of the locking tongue is provided on the inner side of the locking tongue. When the hook or the locking tongue is severely worn after long-term use, by turning the adjusting screw, the outer end of the locking tongue is lifted to eliminate the possible gap caused by wear, so that the hook and the locking tongue are kept in a fastened state to avoid loosening or shaking.

[0009] Preferably, a rotating shaft is provided between the folding lower seat and the folding upper seat, and the folding lower seat is provided with a rotating seat for positioning the rotating shaft.

[0010] Preferably, a pair of side ears perpendicular to the axis direction of the folding lower seat are provided on the side of the folding lower seat where the wrench is provided, and the camshaft is arranged between the two side ears.

[0011] Preferably, one end of the camshaft is provided with a square tenon, the wrench is provided with a square hole matching with the square tenon, and a camshaft fixing screw is provided at the end of the camshaft where the square tenon is arranged.

[0012] Preferably, the folding upper seat is provided with a locking block, the wrench is provided with a slider for locking cooperation with the locking block, a chute arranged along the length direction of the wrench is provided at the upper end of the wrench, the slider is slidably arranged in the chute, and a compression spring acting on the slider is provided in the chute.

[0013] Preferably, the slider includes an outer slider and an inner slider, the inner slider and the outer slider are fixedly connected, and the inner slider is provided with a groove for positioning one end of the compression spring.

[0014] The beneficial effects of the present utility model are as follows: (1) By arranging the camshaft to cooperate with the cam path groove, the displacement process of the hook is accurately controlled, improving the stability of the hook during locking and unlocking; (2) When the wrench rotates outward to a predetermined angle, it drives the hook to rotate outward, improving the unlocking reliability and avoiding the slipping and overshooting phenomenon in the prior art; (3) The locking tongue has a certain adjustment ability, which is beneficial to eliminating the gap between the locking tongue and the hook due to wear after long-term use; (4) The unlocking process is convenient and labor-saving, improving the use comfort. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural view of the present utility model;

[0016] Figure 2 is a sectional view of the present utility model;

[0017] Figure 3 is a schematic view of the cooperation between the hook and the camshaft of the present utility model;

[0018] Figure 4 is a schematic structural view of the hook and the locking tongue of the present utility model in a locked state;

[0019] Figure 5 is a schematic structural view of the present utility model when the wrench rotates to the unlocking state;

[0020] Figure 6 is a schematic structural view of the present utility model when the wrench rotates completely open;

[0021] Figure 7 is a schematic structural view of the hook and the locking tongue of the present utility model in a separated state;

[0022] Figure 8 is a schematic structural view of the present utility model when the folding upper seat and the folding lower seat rotate and fold.

[0023] In the figures: wrench 1, chute 1a, slider 2, outer slider 2a, inner slider 2b, groove 21, camshaft 3, cam portion 31, arc surface 31a, convex surface 31b, square tenon 32, folding lower seat 4, rotating seat 4a, side ear 4b, rotating shaft 5, folding upper seat 6, vertical pipe 7, compression spring 8, locking block 9, hook 10, cam path groove 101, guiding surface 101a, abutting surface 101b, locking tongue 11, torsion spring 12, locking tongue fixing screw 13, locking tongue adjusting screw 14. Detailed Description of the Embodiment

[0024] The following further describes the present utility model in conjunction with the drawings and specific embodiments.

[0025] As Figure 1 、 Figure 2In the illustrated embodiment, a folding device locking structure includes an upper folding seat 6 and a lower folding seat 4. A riser pipe 7 is fixed to the upper folding seat 6. A rotating seat 4a is provided on one side of the lower folding seat 4, and a rotating shaft 5 is provided on the rotating seat 4a. The lower folding seat 4 and the upper folding seat 6 are rotatably connected through the rotating shaft 5. The lower folding seat 4 is provided with a wrench 1 that is rotatably connected. The wrench 1 is located on the side of the lower folding seat 4 opposite to the side where the rotating shaft 5 is provided. The upper folding seat 6 is provided with a locking tongue 11, and the wrench 1 is provided with a hook 10 that cooperates with the locking tongue 11 for locking. The lower folding seat 4 is provided with a camshaft 3 that is rotatably engaged. The camshaft 3 is fixedly connected to the wrench 1. When the wrench 1 rotates and opens relative to the lower folding seat 4, it drives the camshaft 3 to rotate synchronously. A torsion spring 12 is provided between the lower folding seat 4 and the hook 10, and the torsion spring 12 drives the hook 10 to rotate inward to lock with the locking tongue 11.

[0026] As Figure 2 shown, a locking tongue fixing screw 13 connecting the locking tongue 11 to the upper folding seat 6 is provided in the middle of the locking tongue 11, and a locking tongue adjusting screw 14 for changing the height of the outer end of the locking tongue 11 is provided inside the locking tongue 11. The outer end of the locking tongue 11 cooperates with the hook 10. When the hook 10 or the locking tongue 11 is severely worn after long-term use, the outer end of the locking tongue 11 is lifted by screwing the locking tongue adjusting screw 14, thereby eliminating the clearance between the outer end of the locking tongue 11 and the hook 10 and ensuring the locking performance of the two.

[0027] As Figure 2 shown, a pair of side ears 4b perpendicular to the axis direction of the lower folding seat 4 are provided on the side of the lower folding seat 4 where the wrench 1 is provided. The camshaft 3 is arranged between the two side ears 4b, thereby positioning the rotation axis of the camshaft 3. One end of the camshaft 3 is provided with a square tenon 32, and the wrench 1 is provided with a square hole that cooperates with the square tenon 32. A camshaft fixing screw is provided at the end of the camshaft 3 where the square tenon 32 is provided. When the wrench 1 rotates, it drives the camshaft 3 to rotate synchronously, preventing the two from slipping.

[0028] As Figure 3 、 Figure 4 shown, the camshaft 3 is provided with a cam portion 31 acting on the hook 10, and the wrench 1 is provided with a cam path groove 101 that cooperates with the cam portion 31. The cam portion 31 includes an arc surface 31a and a raised surface 31b protruding from the arc surface 31a. The cam path groove 101 includes a guiding surface 101a in contact with the arc surface 31a and a abutting surface 101b in contact with the raised surface 31b.

[0029] As Figure 2As shown, the upper folding seat 6 is provided with a locking block 9. The locking block 9 is located above the locking tongue 11. The wrench 1 is provided with a slider 2 that cooperates with the locking block 9 for locking. The upper end of the wrench 1 is provided with a chute 1a arranged along the length direction of the wrench 1. The slider 2 is slidably arranged in the chute 1a, and a compression spring 8 acting on the slider 2 is arranged in the chute 1a. The slider 2 includes an outer slider 2a and an inner slider 2b, which are fixedly connected to each other. The inner slider 2b is provided with a groove 21 for positioning one end of the compression spring 8. The slider 2 can move along the length direction of the wrench 1 in the chute 1a of the wrench 1. When the slider 2 is operated to move away from the locking block 9, the outer slider 2a drives the inner slider 2b to disengage from the positioning of the locking block 9, so that the wrench 1 can rotate outward.

[0030] Combined with Figure 2 、 Figure 4 As shown, when the upper folding seat 6 and the lower folding seat 4 are in the locked state, there is a certain gap between the convex surface 31b of the cam portion 31 and the abutting surface 101b of the cam path groove 101. This enables that within the initial outward rotation stroke of the wrench 1, the convex surface 31b of the cam portion 31 does not directly act on the abutting surface 101b. Instead, when it rotates to a certain angle to the unlocking position, as Figure 5 shown, the convex surface 31b acts on the abutting surface 101b. As the wrench 1 continues to rotate outward, the cam portion 31 drives the hook 10 to move in the direction away from the locking tongue 11. After that, as Figure 6 、 Figure 7 shown, the wrench 1 continues to drive the hook 10 to rotate outward through the cam portion 31 of the camshaft 3, and the hook 10 is completely separated from the locking tongue 11. As Figure 8 shown, at this time, the upper folding seat 6 can rotate relative to the lower folding seat 4, thereby driving the riser 7 to rotate to realize the folding of the riser 7.

[0031] The embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A folder locking structure, comprising a folding upper seat (6) and a folding lower seat (4), wherein the folding lower seat (4) is rotatably connected to the folding upper seat (6), the folding upper seat (6) is provided with a locking tongue (11), the folding lower seat (4) is provided with a rotatably connected wrench (1), the wrench (1) is provided with a hook (10) that cooperates with the locking tongue (11) to lock, wherein the structure is characterized in that: The folding lower seat (4) is provided with a rotatably matched cam shaft (3), the cam shaft (3) is fixedly connected to the wrench (1), the cam shaft (3) is provided with a cam portion (31) acting on the hook (10), the wrench (1) is provided with a cam path groove (101) matched with the cam portion (31), and when the wrench (1) is rotated outward to an unlocking position, the cam portion (31) drives the hook (10) and the lock tongue (11) to release the locked state through the cam path groove (101).

2. A folder locking structure according to claim 1, characterized in that: The cam portion (31) comprises an arcuate surface (31a) and a raised surface (31b) raised from the arcuate surface (31a); the cam path groove (101) comprises a guide surface (101a) in contact with the arcuate surface (31a) and a supporting surface (101b) in contact with the raised surface (31b); when the raised surface (31b) acts on the supporting surface (101b), the cam portion (31) drives the hook (10) to move in a direction of disengaging from the locking tongue (11).

3. A folder locking structure according to claim 1, characterized in that: A torsion spring (12) is provided between the folding lower seat (4) and the hook (10), and the torsion spring (12) drives the hook (10) to rotate inwards and lock with the locking tongue (11).

4. A folder locking structure according to claim 1, characterized in that: A lock tongue fixing screw (13) connected to the folding upper seat (6) is provided at the middle of the lock tongue (11), and a lock tongue adjusting screw (14) for changing the height of the outer end of the lock tongue (11) is provided at the inner side of the lock tongue (11).

5. A folder locking structure according to claim 1, characterized in that: A rotating shaft (5) is provided between the folding lower seat (4) and the folding upper seat (6), and the folding lower seat (4) is provided with a rotating seat (4a) for positioning the rotating shaft (5).

6. A folder locking structure according to claim 1, characterized in that: A side of the folding lower seat (4) on which the wrench (1) is arranged is provided with a pair of side ears (4b) perpendicular to the axis direction of the folding lower seat (4), and the cam shaft (3) is arranged between the two side ears (4b).

7. A folder locking structure according to claim 6, characterized in that: One end of the camshaft (3) is provided with a square tenon (32), the wrench (1) is provided with a square hole matching the square tenon (32), and one end of the camshaft (3) provided with the square tenon (32) is provided with a camshaft fixing screw.

8. The folder locking structure according to claim 1, characterized in that: The folding upper seat (6) is provided with a locking block (9), the wrench (1) is provided with a slider (2) that cooperates with the locking block (9) to lock, the upper end of the wrench (1) is provided with a slide groove (1a) arranged along the length direction of the wrench (1), the slider (2) is slidably arranged in the slide groove (1a), and the slide groove (1a) is provided with a compression spring (8) that acts on the slider (2).

9. A folder locking structure according to claim 8, characterized in that: The slider (2) comprises an outer slider (2a) and an inner slider (2b), wherein the inner slider (2b) and the outer slider (2a) are fixedly connected, and the inner slider (2b) is provided with a groove (21) for positioning with one end of a compression spring (8).

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