Adjustable metal hook claw lock disc for bicycle

Abstract

This utility model relates to the field of metal dropper lock disc technology, specifically an adjustable bicycle metal dropper lock disc. Its purpose is to solve the problem that traditional dropper lock discs have a fixed length and cannot adapt to different frame sizes or installation positions, thus enhancing the efficiency and effectiveness of the metal dropper lock disc. It includes a dropper lock disc body, a connecting plate, and an adjusting block. The dropper lock disc body and the connecting plate are slidably fitted onto the sides of the corresponding adjusting block. An adjusting mechanism is provided within the adjusting block. The adjusting mechanism further includes a first rack, a second rack, a rotating shaft, and a drive gear. A working cavity is provided within the adjusting block. The first rack is fixedly connected to one side of the corresponding dropper lock disc body, and one side of the second rack is fixedly connected to one side of the corresponding connecting plate. The first and second racks are slidably connected to the inner wall of the working cavity, and a drive gear is located in the middle of the inner wall of the working cavity.

Description

Technical Field

[0001] This utility model relates to the field of metal hook lock disc technology, specifically an adjustable bicycle metal hook lock disc. Background Technology

[0002] The bicycle metal dropout lock disc is a key component mounted on the rear hub of a bicycle. Its primary function is to secure the freewheel (cassette) and ensure the stability and safety of power transmission during riding. Its core function is to prevent the freewheel from loosening or slipping during high-speed rotation or under stress by tightly engaging the metal dropout with the freewheel's groove, thereby ensuring the normal operation of the shifting system.

[0003] In the use of an existing type of bicycle metal drop lock disc, it has been found that the traditional drop lock disc has a fixed length, which cannot adapt to the needs of different frame sizes or installation positions. Therefore, the efficiency and effectiveness of the metal drop lock disc are reduced, resulting in poor practicality. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an adjustable bicycle metal drop lock disc, aiming to solve the problem that traditional drop lock discs have a fixed length and cannot adapt to the needs of different frame sizes or installation positions. Therefore, it enhances the efficiency and effectiveness of the metal drop lock disc, thereby improving its practicality.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable bicycle metal hook lock disc, comprising a hook lock disc body, a connecting plate, and an adjusting block, wherein the hook lock disc body and the connecting plate are slidably fitted onto the sides of the corresponding adjusting block, and an adjusting mechanism is provided inside the adjusting block;

[0008] The adjustment mechanism also includes a first rack, a second rack, a rotating shaft, and a drive gear. The adjustment block has a working cavity. The first rack is fixedly connected to one side of the corresponding hook lock disc body, and one side of the second rack is fixedly connected to one side of the corresponding connecting plate. The first rack and the second rack are slidably connected to the inner wall of the working cavity. A drive gear is provided in the middle of the inner wall of the working cavity. The drive gear meshes with the corresponding first rack and the second rack. The rotating shaft is fixedly connected to the drive gear. Both sides of the rotating shaft are rotatably connected to the bearings on the inner wall of the corresponding working cavity. A drive mechanism is provided on the outer side of the rotating shaft.

[0009] Furthermore, to facilitate the rotation adjustment of the rotating shaft, the present invention includes an improvement in the drive mechanism, which further includes a worm gear, a worm, and a protective cover. A protective cover is provided in the middle of one side of the adjusting block, and a worm gear and a worm are provided inside the protective cover. The worm gear is fixedly connected to the outside of the rotating shaft, and the worm meshes with the corresponding worm gear. Both sides of the worm are rotatably connected to bearings on the inner wall of the protective cover.

[0010] Furthermore, to facilitate the adjustment of the worm gear rotation, the present invention includes a rotating handle, which is fixedly connected to one side of the worm gear.

[0011] Furthermore, in order to improve the friction, the present invention also includes a rubber strip, which is provided around the rotating handle.

[0012] Furthermore, in order to facilitate limiting the sliding position of the first rack and the second rack, the present invention includes a limiting block, wherein a limiting block is provided on the other side of both the first rack and the second rack.

[0013] Furthermore, in order to improve friction, the present invention includes an improvement in that the surface of the rubber strip is provided with anti-slip texture.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an adjustable bicycle metal pawl lock disc, which has the following advantages:

[0016] Solving the problem of fixed length and improving versatility: Through the meshing transmission of the first rack, the second rack and the drive gear, the length of the hook lock disc body and the connecting plate can be adjusted, which can be adapted to different sizes of frames and installation positions, overcome the limitations of the fixed length of traditional lock discs, and significantly enhance the adaptability to diverse usage scenarios.

[0017] Stable and reliable adjustment with good anti-loosening effect: The drive mechanism adopts worm gear transmission, which utilizes its self-locking characteristics to firmly maintain the current length after adjustment, avoiding position displacement caused by vibration during riding, and improving the stability and safety of the connection between the lock disc and the flywheel.

[0018] Easy and effortless to operate, with a superior user experience: The worm gear is driven by turning the handle, which, in conjunction with the worm wheel reduction transmission, reduces the force required for adjustment; the rubber strip and anti-slip texture design increase hand friction, prevents slippage during operation, and improves the comfort and convenience of the adjustment process.

[0019] The structure is safe and reliable, extending its service life: the limit block can effectively prevent the first and second racks from coming out of the adjusting block, avoiding damage to the components; the overall structure is simple and compact, easy to assemble and maintain, reducing the probability of failure and extending the service life of the lock disc. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an adjustable bicycle metal hook lock disc according to the present invention;

[0021] Figure 2 This is an exploded view of the drive mechanism of an adjustable bicycle metal hook lock disc according to the present invention.

[0022] Figure 3 This is a partially enlarged structural diagram of A, which is an adjustable bicycle metal hook lock disc according to this utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of the adjusting block of an adjustable bicycle metal hook lock disc according to the present invention.

[0024] In the diagram: 1. Hook and claw lock disc body; 2. Connecting plate; 3. Adjusting block; 4. First rack; 5. Second rack; 6. Rotating shaft; 7. Drive gear; 8. Working chamber; 9. Worm gear; 10. Worm; 11. Protective cover; 12. Rotating handle; 13. Rubber strip; 14. Limit stop. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 An adjustable bicycle metal hook lock disc includes a hook lock disc body 1, a connecting plate 2, and an adjusting block 3. The hook lock disc body 1 and the connecting plate 2 are respectively slidably fitted onto the sides of the corresponding adjusting block 3. An adjusting mechanism is provided inside the adjusting block 3.

[0027] The adjustment mechanism also includes a first rack 4, a second rack 5, a rotating shaft 6, and a drive gear 7. The adjustment block 3 is provided with a working cavity 8. The first rack 4 is fixedly connected to one side of the corresponding hook lock disc body 1. One side of the second rack 5 is fixedly connected to one side of the corresponding connecting plate 2. The first rack 4 and the second rack 5 are slidably connected to the inner wall of the working cavity 8. The drive gear 7 is provided in the middle of the inner wall of the working cavity 8. The drive gear 7 meshes with the corresponding first rack 4 and the second rack 5. The rotating shaft 6 is fixedly connected to the drive gear 7. Both sides of the rotating shaft 6 are rotatably connected to the bearings on the inner wall of the corresponding working cavity 8. A drive mechanism is provided on the outer side of the rotating shaft 6.

[0028] It is worth noting that the hook-claw locking disc body 1 used in this new invention is existing technology.

[0029] When this device is in use

[0030] Initial state: The pawl lock disc body 1 and the connecting plate 2 are respectively slidably mounted on both sides of the adjusting block 3, the first rack 4 and the second rack 5 are in the initial meshing position, and the overall length of the lock disc is in the default state.

[0031] Length adjustment operation:

[0032] The operator holds the rotating handle 12 with rubber strip 13 and rotates the handle by applying force with his hand (the anti-slip texture enhances grip stability);

[0033] Turning the handle 12 causes the worm 10 to rotate, and the worm 10 meshes with the worm wheel 9 to drive the worm wheel 9 to rotate the rotating shaft 6 synchronously.

[0034] The rotating shaft 6 drives the drive gear 7 in the working cavity 8 of the adjusting block 3 to rotate. Since the drive gear 7 meshes with the first rack 4 and the second rack 5 at the same time, and the two racks are respectively connected to the hook lock disc body 1 and the connecting plate 2, the rotation of the drive gear 7 will drive the first rack 4 and the second rack 5 to slide along the inner wall of the working cavity 8. The two racks extend or retract at the same time, thereby adjusting the total length of the lock disc.

[0035] Positioning and self-locking: When the lock disc length is adjusted to the position suitable for the frame, stop turning the handle 12. Because the worm gear 9 and worm 10 transmission has a self-locking function (only the worm 10 can drive the worm gear 9, and the worm gear 9 cannot drive the worm 10 in the reverse direction), the lock disc length can remain stable and prevent it from loosening on its own.

[0036] Limit protection: During the adjustment process, if the first rack 4 or the second rack 5 slides to the limit position, the limit block 14 at its end will contact the inner wall of the adjusting block 3 to prevent the rack from falling out of the adjusting block 3 and ensure the structural integrity.

[0037] In actual use, it was found that it was inconvenient to adjust the rotation of the rotating shaft 6. To solve the above problem, in this embodiment, the drive mechanism also includes a worm gear 9, a worm 10 and a protective cover 11. The protective cover 11 is provided in the middle of one side of the adjusting block 3. The worm gear 9 and the worm 10 are provided inside the protective cover 11. The worm gear 9 is fixedly connected to the outside of the rotating shaft 6. The worm 10 meshes with the corresponding worm gear 9. The two sides of the worm 10 are rotatably connected to the bearings on the inner wall of the protective cover 11.

[0038] In actual use, it was found that it was inconvenient to adjust the rotation of the worm gear 10. In order to solve the above problem, this embodiment also includes a rotating handle 12, which is fixedly connected to one side of the worm gear 10.

[0039] In actual use, it was found that it was not convenient to increase the friction. In order to solve the above problem, this embodiment also includes a rubber strip 13, and the rotating handle 12 is provided with a rubber strip 13 around it.

[0040] In actual use, it was found that it was inconvenient to limit the sliding position of the first rack 4 and the second rack 5. In order to solve the above problem, this embodiment also includes a limiting block 14, and a limiting block 14 is provided on the other side of the first rack 4 and the second rack 5.

[0041] As a preferred embodiment of the above, the surface of the rubber strip 13 is provided with anti-slip texture.

[0042] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0043] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0044] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable bicycle metal hook lock disc, comprising a hook lock disc body (1), a connecting plate (2) and an adjusting block (3), wherein the hook lock disc body (1) and the connecting plate (2) are respectively slidably fitted on both sides of the corresponding adjusting block (3), and an adjusting mechanism is provided inside the adjusting block (3); characterized in that The adjustment mechanism also includes a first rack (4), a second rack (5), a rotating shaft (6), and a drive gear (7). The adjustment block (3) is provided with a working cavity (8). The first rack (4) is fixedly connected to one side of the corresponding hook lock disc body (1). One side of the second rack (5) is fixedly connected to one side of the corresponding connecting plate (2). The first rack (4) and the second rack (5) are slidably connected to the inner wall of the working cavity (8). The drive gear (7) is provided in the middle of the inner wall of the working cavity (8). The drive gear (7) meshes with the corresponding first rack (4) and the second rack (5). The rotating shaft (6) is fixedly connected to the drive gear (7). The two sides of the rotating shaft (6) are rotatably connected to the bearings of the inner wall of the corresponding working cavity (8). A drive mechanism is provided on the outer side of the rotating shaft (6).

2. An adjustable bicycle hooking lock disc according to claim 1, characterized in that, The drive mechanism also includes a worm wheel (9), a worm (10) and a protective cover (11). The protective cover (11) is provided in the middle of one side of the adjusting block (3). The worm wheel (9) and the worm (10) are provided inside the protective cover (11). The worm wheel (9) is fixedly connected to the outside of the rotating shaft (6). The worm (10) meshes with the corresponding worm wheel (9). The two sides of the worm (10) are rotatably connected to the bearings on the inner wall of the protective cover (11).

3. An adjustable bicycle hooking disc lock according to claim 2, wherein, It also includes a rotating handle (12), which is fixedly connected to one side of the worm (10).

4. An adjustable bicycle hooking disc lock according to claim 3, wherein, It also includes a rubber strip (13), which is provided around the rotating handle (12).

5. An adjustable bicycle hooking disc lock according to claim 4, wherein, It also includes a limiting block (14), and the first rack (4) and the second rack (5) are provided with a limiting block (14) on the other side.

6. An adjustable bicycle hooking lock disc according to claim 5, characterized in that, The surface of the rubber strip (13) is provided with anti-slip texture.

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