Door lock cable anti-disengagement device

Abstract

The utility model discloses a door lock cable anti -disengagement device relates to the technical field of automobile parts, including the connecting buckle, the connecting buckle includes the card post, chuck and dog structure, the center of card post, chuck and dog structure is provided with the through -hole for longitudinal axle insertion, the side wall of card post is provided with the avoidance hole of intercommunication through -hole, the avoidance hole includes the limiting hole of setting in the middle part of card post and the connecting hole of connecting limiting hole and card post top, limiting hole diameter and horizontal axis diameter match, and the diameter of connecting hole is less than limiting hole diameter, and horizontal axis is limited in limiting hole after being inserted into the connecting hole, and dog structure is inserted into the hanging hole, and it includes a plurality of card legs that extend vertically downward from the chuck, and the length of the card leg is equal to the wall thickness of the hanging hole, and the free end of the card leg is provided with a clamping head. Through setting the connecting buckle between the unlocking rotary arm and the zipper hanging piece, and the connecting buckle is designed through the card post, chuck and dog structure, reduces the risk of falling out, and guarantees the connection stability.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a door lock cable anti-detachment device. Background Technology

[0002] Cable-driven systems play a crucial role in operations such as seat back folding, seat rail movement, and door unlocking. Typically, these systems rely on an input operation, such as a handle or strap, to trigger the unlocking action. In this process, the unlocking cable connects to the seat frame and the door lock's unlocking mechanism via a hook. When the input performs an unlocking operation, the hook actuates the relevant unlocking mechanism, ultimately achieving the functions of seat back folding, rail movement, and door opening.

[0003] However, with the existing cable hangers on the market, the hangers are prone to detaching from the mounting holes of the unlocking arm. Once the hangers detach, the seat back cannot be rotated properly, the seat rails cannot move smoothly, and the doors cannot be unlocked effectively. The function of the entire cable drive system will be severely affected, or even completely fail, greatly reducing the reliability and stability of the related equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a door lock cable anti-disengagement device. By setting a connecting buckle between the unlocking arm and the zipper, and by designing a buckle with a buckle post, buckle plate and buckle claw structure, the risk of disengagement is reduced and the connection stability is guaranteed.

[0005] To achieve the above objectives, this utility model provides a door lock cable anti-derailment device, including a connecting buckle; the connecting buckle is installed between the hook hole of the unlocking arm and the zipper hook; the zipper hook includes a horizontal axis and a vertical axis arranged perpendicularly to each other; the connecting buckle includes a locking post, a locking disc, and a locking claw structure integrally formed from top to bottom; a through hole for the vertical axis to be inserted is provided at the center of the locking post, the locking disc, and the locking claw structure; an avoidance hole communicating with the through hole is provided on the side wall of the locking post; the avoidance hole includes a limiting hole and a limiting hole provided in the middle of the locking post. The connecting hole connects the limiting hole to the top of the locking post; the diameter of the limiting hole matches the diameter of the horizontal axis, and the diameter of the connecting hole is smaller than the diameter of the limiting hole; after the horizontal axis is inserted into the connecting hole, it is limited within the limiting hole; the diameter of the chuck is larger than the diameter of the hook hole; the claw structure is inserted into the hook hole, which includes multiple claw legs extending vertically downward from the chuck, the length of which is equal to the wall thickness of the hook hole; the free end of the claw leg is provided with a locking head, the diameter of the locking head in the released state is larger than the diameter of the hook hole, and the diameter in the compressed state is smaller than the diameter of the hook hole.

[0006] With the above structure, the horizontal shaft cannot come out on its own after being inserted through the "connecting hole insertion + limiting hole fixing" clearance hole structure, thus achieving a stable connection between the cable hanger and the connecting buckle. The claw structure's clamp head is compressed and inserted into the hanging hole and then released, forming an upper and lower clamping fixation with the chuck, allowing the connecting buckle to fit tightly with the unlocking rotating arm. The dual structure completely solves the problem of the hanger easily coming out. The one-piece molding design ensures structural strength, and the installation can be completed simply by snapping it in and inserting it during assembly. It is compatible with existing components and greatly improves the reliability and stability of the cable drive system.

[0007] Preferably, multiple clips form a conical head; when inserted downwards into the mounting hole, the bottom conical surface contacts the mounting hole first. The inclined surface of the conical head has a guiding function, eliminating the need for precise alignment during insertion. The conical surface guides the clips to automatically calibrate their position and compress, reducing the resistance of the clip structure when inserting into the mounting hole, making the installation operation smoother, and avoiding the problem of improper installation caused by clip misalignment due to force.

[0008] Preferably, the contact point between the top of the clip and the bottom of the mounting hole is a planar structure. Compared with point contact or line contact, planar contact increases the force-bearing area between the clip and the bottom of the mounting hole, making the tensile force on the clip evenly distributed, avoiding deformation or loosening of the clip caused by local stress concentration, further consolidating the connection stability between the connecting buckle and the unlocking arm, and extending the service life.

[0009] Preferably, the two opposing legs are provided with protrusions extending towards the sidewall of the mounting hole. The protrusions fit tightly against the sidewall of the mounting hole, filling the gap between the legs and the mounting hole, limiting the radial movement of the legs within the mounting hole, avoiding wear caused by movement during long-term use, and improving the overall installation accuracy of the connecting buckle, preventing the risk of the buckle head falling off due to movement.

[0010] Preferably, the inlet of the connecting hole is provided with a guide ramp that slopes to both sides. The guide ramp widens the inlet channel of the connecting hole, providing a guiding path for the horizontal shaft of the cable hanger. When installing the horizontal shaft, it is not necessary to precisely align it with the connecting hole. The guide ramp can guide the horizontal shaft to slide into the limiting hole along the ramp, simplifying the assembly steps, improving installation efficiency, and avoiding damage caused by the horizontal shaft colliding with the edge of the connecting hole.

[0011] Preferably, a limiting ring is rotatably mounted on the locking pin above the limiting hole, and the limiting ring has an opening; the width of the opening is not less than the width of the limiting hole; rotating the limiting ring allows the limiting hole to open or close. The opening design of the limiting ring ensures that it does not affect the installation and removal of the horizontal shaft. When open, the horizontal shaft can freely enter and exit the limiting hole; when closed, the limiting ring blocks the connecting hole, forming a secondary limiting, preventing the horizontal shaft from coming out of the limiting hole due to vibration or external force. The rotary structure is easy to operate and further improves the reliability of preventing detachment without increasing the assembly difficulty.

[0012] Preferably, an annular groove is provided on the side wall of the retaining post; the limiting ring is rotatably installed in the annular groove. The annular groove provides precise installation positioning for the limiting ring, restricts the axial displacement of the limiting ring, and prevents the limiting ring from falling off during use; at the same time, the structural design of the annular groove ensures that the limiting ring rotates smoothly without jamming, ensuring that the opening and closing functions of the limiting ring are stably performed.

[0013] Preferably, the outer circumferential surface of the limiting ring is provided with an annular protrusion, and the annular protrusion is provided with anti-slip texture.

[0014] Preferably, a partition is provided on one side of the connecting hole within the annular groove; when the end of the limiting ring abuts against the partition, its front end is located on the other side of the connecting hole; when the front end abuts against the partition, the limiting ring closes the connecting hole; a hook extending towards the partition is provided on the outer side of the front end of the limiting ring, and when the front end of the limiting ring abuts against the partition, the hook hook is engaged with the partition. The partition clearly defines the two working positions of the limiting ring (open / closed), ensuring that the limiting ring rotates to the correct position and avoiding limiting failure due to insufficient rotation angle; the hook hook engaging the partition can fix the closed state of the limiting ring, preventing the limiting ring from accidentally rotating due to vibration during vehicle operation, ensuring the stability of the secondary limiting, and further enhancing the anti-detachment effect.

[0015] Preferably, the hook includes an extension arm fixed to the outside of the limiting ring and extending towards the partition, and a hook fixed to the end of the extension arm and protruding into the annular groove. A lever is provided on the other end of the extension arm near the hook; moving the lever expands the extension arm, allowing the hook to avoid the partition. The lever provides a convenient operating point for releasing the hook; the operator only needs to move the lever to disengage the hook from the partition and easily rotate the limiting ring. The elastic design of the extension arm ensures the tightness of the hook when it is engaged, while the lever operation is labor-saving and does not damage components, thus balancing the reliability of the limiting mechanism with ease of operation.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are: This utility model provides a door lock cable anti-detachment device, which solves the technical problem of easy detachment between the unlocking arm and the zipper in the prior art. This utility model sets a connecting buckle between the unlocking arm and the zipper, and the connecting buckle is designed with a buckle post, buckle plate and buckle claw structure to reduce the risk of detachment and ensure connection stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a door lock cable anti-derailment device according to the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the connecting buckle (connecting hole open state); Figure 3 yes Figure 1A schematic diagram of the structure of the connecting buckle (connecting hole closed); Figure 4 yes Figure 2 Side section view; Figure 5 yes Figure 4 BB section view; Figure 6 yes Figure 4 CC section view.

[0018] In the diagram, 1. Connecting buckle, 11. Clamping post, 12. Clamping disc, 13. Clamping claw structure, 131. Clamping leg, 132. Clamping head, 14. Through hole, 15. Clearance hole, 151. Limiting hole, 152. Connecting hole, 153. Annular groove, 154. Partition, 16. Limiting ring, 161. Opening, 162. Extension arm, 163. Hook, 164. Paddle, 2. Unlocking rotating arm, 21. Hanging hole, 3. Pull lock hook, 31. Horizontal axis, 32. Vertical axis, 4. Steel wire rope. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] The orientations mentioned in this specification are based on the orientation of the door lock cable anti-derailment device of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0021] like Figure 1 As shown, a door lock cable anti-derailment device includes a connecting buckle 1; the connecting buckle 1 is installed between the hook hole 21 of the unlocking rotating arm 2 and the zipper hook 3. The unlocking rotating arm 2 is an important component in the entire system that receives the movement of the cable hook and transmits it to the unlocking mechanism. The zipper hook 3 is connected to a handle via a steel wire rope 4. The handle drives the steel wire rope 4 to move in the direction of the arrow, thereby driving the unlocking rotating arm 2 to rotate in the direction of the arrow, realizing the unlocking of the corresponding component. The zipper hook 3 includes a horizontal axis 31 and a vertical axis 32 arranged perpendicularly to each other.

[0022] The connecting buckle 1 is installed between the hook hole 21 of the unlocking rotating arm 2 and the zipper hook 3, so as to connect the zipper hook and the unlocking rotating arm 2 tightly and securely. like Figures 2-6 As described above, the connecting buckle 1 includes a snap post 11, a chuck 12, and a claw structure 13 integrally formed from top to bottom. The snap post 11, the chuck 12, and the claw structure 13 are provided with a through hole 14 for the longitudinal shaft 32 to be inserted, so as to achieve precise assembly.

[0023] The side wall of the locking post 11 is provided with a clearance hole 15 that connects to the through hole 14; the clearance hole 15 is used to accommodate the horizontal shaft 31 of the cable hanger, realizing the effective connection between the two. The clearance hole 15 includes a limiting hole 151 located in the middle of the locking post 11 and a connecting hole 152 connecting the limiting hole 151 and the top of the locking post 11; the diameter of the limiting hole 151 matches the diameter of the horizontal shaft 31, and the diameter of the connecting hole 152 is smaller than the diameter of the limiting hole 151; after the horizontal shaft 31 is inserted into the connecting hole 152, it is limited within the limiting hole 151. This size design ensures that the horizontal shaft 31 will not come out during normal use, while it can be smoothly inserted during installation. The entrance position of the connecting hole 152 is provided with a guide slope inclined to both sides.

[0024] The diameter of the chuck 12 is larger than the diameter of the mounting hole 21. After installation, the chuck 12 can prevent the connecting buckle 1 from being completely inserted into the mounting hole 21, thus playing a role in positioning and limiting.

[0025] The claw structure 13 is inserted into the mounting hole 21. It includes multiple claw legs 131 extending vertically downward from the chuck 12. The length of the claw legs 131 is equal to the wall thickness of the mounting hole 21, ensuring that the claw structure 13 can fully contact the mounting hole 21 and provide a stable connection force. The free end of the claw legs 131 is provided with a locking head 132. The diameter of the locking head 132 in the released state is larger than the diameter of the mounting hole 21, and the diameter in the compressed state is smaller than the diameter of the mounting hole 21. This allows the claw legs 131 to be smoothly inserted into the mounting hole 21, and after insertion, the locking head 132 tightly locks the bottom of the mounting hole 21, preventing the connecting buckle 1 from coming off. In this embodiment, four claw legs 131 are provided; in practical applications, three or six can also be provided. The upper part of the locking head 132 has a planar contact position with the bottom of the mounting hole 21. Multiple locking heads 132 form a conical head; when inserted downward into the mounting hole 21, its bottom conical surface contacts the mounting hole 21 first. This shape design helps guide the claw structure 13 to be smoothly inserted into the hook hole 21, reducing resistance during insertion.

[0026] like Figure 6 As shown, in order to prevent the clamping legs 131 from wobbling in the mounting hole 21, protrusions extending towards the side wall of the mounting hole 21 are provided on the two opposite clamping legs 131. The stability of the clamping legs 131 can be increased by the protrusions.

[0027] An annular groove 153 is provided on the side wall of the locking post 11 above the limiting hole 151. A limiting ring 16 is rotatably installed in the annular groove 153. The limiting ring 16 has an opening 161, the width of which is not less than the width of the limiting hole 151. Rotating the limiting ring 16 can open or close the limiting hole 151. The limiting ring 16 has a C-shaped structure, which is snapped into the annular groove 153 and can be rotated. When it is necessary to install or remove the cable hanger, the limiting ring 16 can be rotated to open the limiting hole 151, facilitating the entry and exit of the horizontal shaft 31. After installation, the limiting ring 16 is rotated to close the limiting hole 151, further enhancing the limiting effect on the horizontal shaft 31. An annular protrusion with anti-slip texture is provided on the outer circumferential surface of the limiting ring 16, which facilitates manual rotation of the limiting ring 16 by the operator, improving the convenience of operation.

[0028] Furthermore, within the annular groove 153, a partition 154 is provided on one side of the connecting hole 152; when the end of the limiting ring 16 abuts against the partition 154, its front end is located on the other side of the connecting hole 152 (e.g., Figure 2 (As shown); when the front end abuts against the partition 154, the limiting ring 16 closes the connecting hole 152 (as shown). Figure 3 (As shown in the diagram) A hook extending towards the partition 154 is provided on the outer front end of the limiting ring 16. When the front end of the limiting ring 16 abuts against the partition 154, the hook hook is engaged with the partition 154. The hook includes an extension arm 162 fixed to the outer side of the limiting ring 16 and extending towards the partition 154, and a hook 163 fixed to the end of the extension arm 162 and protruding into the annular groove 153. A lever 164 is provided on the other end of the extension arm 162 at the hook 163. By levering the lever 164, the extension arm 162 expands, thereby causing the hook 163 to avoid the partition 154.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A door lock cable anti-derailment device, characterized in that: Includes a connecting buckle; the connecting buckle is installed between the hook hole of the unlocking rotating arm and the zipper hook; the zipper hook includes a horizontal axis and a vertical axis arranged perpendicularly to each other; The connecting buckle includes a snap pin, a chuck, and a claw structure integrally formed from top to bottom; the center of the snap pin, chuck, and claw structure is provided with a through hole for the longitudinal axis to be inserted; The side wall of the locking post is provided with a clearance hole communicating with the through hole; the clearance hole includes a limiting hole provided in the middle of the locking post and a connecting hole connecting the limiting hole and the top of the locking post; the diameter of the limiting hole matches the diameter of the horizontal axis, and the diameter of the connecting hole is smaller than the diameter of the limiting hole; after the horizontal axis is inserted from the connecting hole, it is limited to the limiting hole. The diameter of the chuck is larger than the diameter of the mounting hole; The claw structure is inserted into the mounting hole, and includes multiple claw legs extending vertically downward from the chuck. The length of the claw legs is equal to the wall thickness of the mounting hole. The free end of each claw leg is provided with a claw head. The diameter of the claw head in the released state is larger than the diameter of the mounting hole, and the diameter in the compressed state is smaller than the diameter of the mounting hole.

2. The door lock cable anti-derailment device according to claim 1, characterized in that: The multiple card heads form a conical head; when inserted downwards into the hook hole, the bottom conical surface first contacts the hook hole.

3. The door lock cable anti-derailment device according to claim 2, characterized in that: The contact area between the top of the card head and the bottom of the mounting hole is a planar structure.

4. The door lock cable anti-derailment device according to claim 1, characterized in that: The two opposite legs are provided with protrusions extending toward the side wall of the mounting hole.

5. A door lock cable anti-derailment device according to claim 1, characterized in that: The inlet of the connection hole is provided with a guide slope that is inclined to both sides.

6. The door lock cable anti-derailment device according to claim 1, characterized in that: A limiting ring is rotatably mounted on the locking post above the limiting hole, and the limiting ring has an opening; the width of the opening is not less than the width of the limiting hole. Rotating the limiting ring can open or close the limiting hole.

7. A door lock cable anti-derailment device according to claim 6, characterized in that: An annular groove is provided on the side wall of the locking post; the limiting ring is rotatably installed in the annular groove.

8. A door lock cable anti-derailment device according to claim 6, characterized in that: The outer circumferential surface of the limiting ring is provided with an annular protrusion, and the annular protrusion is provided with anti-slip texture.

9. A door lock cable anti-derailment device according to claim 7, characterized in that: A partition is provided on one side of the connecting hole within the annular groove; when the end of the limiting ring abuts against the partition, its front end is located on the other side of the connecting hole; when the front end abuts against the partition, the limiting ring closes the connecting hole; a hook extending towards the partition is provided on the outer side of the front end of the limiting ring, and when the front end of the limiting ring abuts against the partition, the hook hooks onto the partition.

10. A door lock cable anti-derailment device according to claim 9, characterized in that: The hook includes an extension arm fixed to the outside of the limiting ring and extending in the direction of the partition, and a hook fixed to the end of the extension arm and protruding into the annular groove. A lever is provided on the extension arm at the other end of the pawl. Moving the lever causes the extension arm to expand, thereby allowing the pawl to avoid the partition.

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