Structure capable of adjusting offset distance and assembly height of front fork

By introducing an adjustable offset and height structure into the bicycle fork, and using a connecting column, shoulder cap, outer foot, and adjustment mechanism, the problem of fixed and non-adjustable fork offset and height has been solved, achieving flexible assembly and cost savings, and improving riding stability and comfort.

CN223644913UActive Publication Date: 2025-12-09SHEN ZHEN LIZHIXIN TECH CO LTD
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Patent Information

Application Number
CN202520074691.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-14
Publication Date
2025-12-09
Estimated Expiration
2035-01-14

AI Technical Summary

Technical Problem

The offset and height of existing bicycle front forks are fixed and cannot be adjusted. Different shoulder covers or outer foot molds are required to achieve adjustment, resulting in high design and mold costs and failing to meet various assembly needs.

Method used

Design an adjustable fork offset and height structure, employing a connecting column, shoulder cap, outer foot, shock absorber bar, and adjustment mechanism. The offset and height are adjusted through the cooperation of eccentric inserts and insert slots. Equipped with a stabilizer frame and aerodynamic cushioning components to improve stability and comfort.

Benefits of technology

It enables the same fork to be adjusted with different offsets and heights, improving assembly flexibility, saving design and molding costs, enhancing stability and riding comfort, and preventing rust.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a structure capable of adjusting offset distance and assembly height of a front fork, which relates to the technical field of front fork use, and comprises a connecting column, the bottom of the connecting column is fixedly connected with a shoulder cover, outer feet are symmetrically arranged below the shoulder cover, and the tops of the two outer feet are connected with damping rods in a sliding manner. The two damping rods are fixedly connected with the bottom of the shoulder cover, adjusting mechanisms are arranged on the outer sides of the two outer feet, and each adjusting mechanism comprises a front fork hook claw. According to the structure capable of adjusting the offset distance and the assembly height of the front fork, due to the arrangement of the adjusting mechanism, different offset distances and assembly heights of the same front fork can be adjusted, and various assembly requirements are better met; the defect that the offset distance and the assembly height of an existing front fork cannot be adjusted is overcome, and a product is more perfect; the design of making new shoulder covers and outer feet for different offset distances and the mold opening cost are saved; and the offset distance and group height of the front fork can be adjusted section by section or section-free, the device is very convenient and practical, and the product cost is saved.
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Description

Technical Field

[0001] This utility model relates to the field of front fork technology, and in particular to a structure for adjustable front fork offset and height. Background Technology

[0002] The bicycle's front fork is a crucial component connecting the handlebars and the front wheel, located at the front of the frame. It supports the front wheel, guides steering, and enhances riding comfort through its shock-absorbing structure. The rigidity and shock absorption performance of the front fork directly affect riding stability and handling, making it an indispensable part of the bicycle's structure.

[0003] Currently, the fork dropout holes on the market are all round holes that directly fit the outer diameter of the wheel axle. After assembly, the fork offset and assembly height are fixed and cannot be adjusted. When the offset is different, different shoulder covers or outer foot molds are required to achieve the desired result. In response to the above problems, we have introduced a structure with adjustable fork offset and assembly height. Utility Model Content

[0004] This utility model discloses a structure for adjustable fork offset and assembly height, aiming to solve the technical problem that the fork dropout holes on the market are all round holes that directly match the outer diameter of the wheel axle. After assembly, the fork offset and assembly height are fixed and cannot be adjusted. When the offset is different, different shoulder covers or outer foot molds are required to achieve the desired result.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable fork offset and height structure includes a connecting post, a shoulder cap fixedly connected to the bottom of the connecting post, symmetrically arranged outer feet below the shoulder cap, shock absorber rods slidably connected to the top of each of the two outer feet, both shock absorber rods fixedly connected to the bottom of the shoulder cap, and an adjustment mechanism provided on the outer side of each of the two outer feet. The adjustment mechanism includes a fork dropper, a fork dropper hole inside the fork dropper, an insert groove arranged in a circular array inside the fork dropper hole, an eccentric insert inside the fork dropper hole, an insert strip fixedly connected in a circular array on the outer side of the eccentric insert, a connecting hole inside the insert strip, and a threaded groove inside the connecting hole.

[0007] The adjustable mechanism allows for different offsets and heights to be adjusted on the same fork, better meeting various assembly needs; it solves the problem that existing forks cannot adjust offsets and heights, making the product more complete; it eliminates the need for designing new shoulder covers and outer feet for different offsets, as well as the associated mold costs; it allows for stepped or stepless adjustment of fork offsets and heights, making it very convenient, practical, and cost-effective.

[0008] In a preferred embodiment, a connecting sleeve is fixedly connected to the outer side of each of the two outer feet, and a stabilizing frame is fixedly connected to the outer side of each of the two connecting sleeves.

[0009] By using a stabilizing bracket, the stability between the two outer feet can be improved.

[0010] In a preferred embodiment, both outer feet are equipped with pneumatic cushioning components, which work in conjunction with the shock absorber rod.

[0011] The shock absorbers and pneumatic cushioning components help to reduce shock and improve riding comfort.

[0012] In a preferred embodiment, the size of the insert strip matches the size of the insert groove, and the insert strip and the insert groove are used in conjunction with each other.

[0013] Matching the size of the insert strip to the size of the insert groove can improve installation stability and prevent loosening.

[0014] In a preferred embodiment, tensioning grooves are provided inside both of the fork pawl holes.

[0015] The tension groove allows for the installation and connection of mounting columns of different sizes.

[0016] In a preferred embodiment, the outer sides of the connecting column, shoulder cover, outer foot, and shock absorber are all provided with an anti-rust coating.

[0017] The rust-proof coating on the outer side of the connecting column, shoulder cover, outer foot, and shock absorber bar can prevent rusting.

[0018] The adjustable fork offset and height structure provided by this utility model has the following advantages:

[0019] Firstly, the adjustable mechanism allows for different offsets and heights to be adjusted on the same fork, better meeting various assembly needs; it solves the problem that existing forks cannot adjust offsets and heights, making the product more complete; it eliminates the need for designing new shoulder covers and outer feet for different offsets, as well as the associated mold costs; it allows for stepped or stepless adjustment of fork offsets and heights, which is very convenient, practical, and saves on product costs.

[0020] Secondly, the stabilizer frame enhances stability between the two outer feet, the tension groove allows for the connection of mounting posts of different sizes, and the shock absorber and pneumatic buffer components provide shock absorption, improving riding comfort. The size of the insert strip matches the size of the insert groove, enhancing installation stability and preventing loosening. The rust-proof coating on the outer sides of the connecting post, shoulder cap, outer feet, and shock absorber prevents rusting. Attached Figure Description

[0021] Figure 1This is a three-dimensional schematic diagram of an adjustable front fork offset and height structure proposed in this utility model.

[0022] Figure 2 This is a front view schematic diagram of an adjustable front fork offset and height structure proposed in this utility model.

[0023] Figure 3 This is a three-dimensional cross-sectional schematic diagram of an adjustable front fork offset and height structure proposed in this utility model.

[0024] Figure 4 This is a three-dimensional cross-sectional schematic diagram of an adjustable front fork offset and height structure proposed in this utility model.

[0025] Figure 5 This is a three-dimensional schematic diagram of an eccentric insert for an adjustable fork offset and height structure proposed in this utility model.

[0026] Figure 6 This utility model proposes a structure for adjustable front fork offset and height. Figure 1 A magnified diagram of point A.

[0027] In the attached diagram: 1. Connecting post; 2. Shoulder cap; 3. Outer foot; 4. Shock absorber bar; 5. Connecting sleeve; 6. Fork pawl; 7. Fork pawl hole; 8. Insert groove; 9. Eccentric insert; 10. Insert strip; 11. Connecting hole; 12. Threaded groove; 13. Tensioning groove; 14. Stabilizer. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] The adjustable fork offset and height structure disclosed in this utility model is mainly applied to scenarios where front forks are used.

[0030] Reference Figure 1 - Figure 6An adjustable fork offset and height structure includes a connecting post 1. A shoulder cover 2 is fixedly connected to the bottom of the connecting post 1. Symmetrically arranged outer feet 3 are located below the shoulder cover 2. Shock absorber rods 4 are slidably connected to the tops of both outer feet 3. Both shock absorber rods 4 are fixedly connected to the bottom of the shoulder cover 2. An adjustment mechanism is provided on the outer sides of both outer feet 3. The adjustment mechanism includes a fork pawl 6. A fork pawl hole 7 is formed inside the fork pawl 6. Embedding grooves 8 are arranged in a circular array inside the fork pawl hole 7. An eccentric insert 9 is provided inside the fork pawl hole 7. Embedding strips 10 are fixedly connected in a circular array on the outer sides of the eccentric insert 9. Connecting holes 11 are formed inside the embedding strips 10. Threaded grooves 12 are formed inside the connecting holes 11. Connecting sleeves 5 are fixedly connected to the outer sides of both outer feet 3. Stabilizers 14 are fixedly connected to the outer sides of both connecting sleeves 5.

[0031] In this embodiment, two eccentric inserts 9 are assembled into the fork pawl holes 7, and the insert strip 10 is inserted into the insert groove 8. The fork pawl 6 is connected to the external mounting post through the threaded groove 12. When the eccentric insert 9 rotates to different directions with toothed positioning, its center is constantly changing. Through the set adjustment mechanism, different offsets and group heights of the same fork can be adjusted, which better meets various assembly requirements. It solves the defect that the existing forks cannot adjust the offset and group height, making the product more perfect. It saves the design and mold opening costs of new shoulder covers 2 and outer feet 3 for different offsets. It can achieve stepped or stepless adjustment of the fork offset and group height, which is very convenient, practical and saves product costs.

[0032] In the above technical solution, considering that the front fork dropout holes on the market are all round holes that directly fit the outer diameter of the wheel axle, the front fork offset and assembly height are fixed and cannot be adjusted after assembly. When the offset is different, different shoulder cover 2 or outer foot 3 molds are required to achieve the desired result. In order to solve this problem, the specific operation is as follows:

[0033] Reference Figure 1 - Figure 6 In a preferred embodiment, both outer feet 3 are internally equipped with pneumatic buffer components, which cooperate with the shock absorber 4. The size of the insert strip 10 matches the size of the insert groove 8, and the insert strip 10 and the insert groove 8 cooperate with each other. Tensioning grooves 13 are provided inside both fork pawl holes 7. The outer sides of the connecting post 1, shoulder cap 2, outer feet 3, and shock absorber 4 are all coated with anti-rust coating.

[0034] In this embodiment: the stabilizer 14 improves the stability between the two outer feet 3; the tension groove 13 allows for the installation and connection of mounting posts of different sizes; the shock absorber 4 and pneumatic buffer assembly provide shock absorption, improving riding comfort; the size of the insert strip 10 matches the size of the insert groove 8, enhancing installation stability and preventing loosening; tension grooves 13 are provided inside the two fork dropout holes 7; and the rust-proof coating on the outer sides of the connecting post 1, shoulder cover 2, outer feet 3, and shock absorber 4 prevents rusting.

[0035] Working principle: In actual use, two eccentric inserts 9 are assembled into the fork pawl holes 7, and the insert strip 10 is inserted into the insert groove 8. The fork pawl 6 is connected to the external mounting post through the threaded groove 12. When the eccentric insert 9 rotates to different directions with tooth positioning, its center is constantly changing, which can achieve stepless or stepless adjustment of the fork offset and height. It is very convenient, practical and saves product costs. The stability frame 14 can improve the stability between the two outer feet 3. The tension groove 13 can be used to install and connect mounting posts of different sizes. The shock absorber 4 and the aerodynamic buffer assembly can absorb shock and improve riding comfort.

[0036] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A structure for adjustable fork offset and height, comprising a connecting post (1), characterized in that: The bottom of the connecting column (1) is fixedly connected to a shoulder cover (2), and the shoulder cover (2) is symmetrically provided with outer feet (3) below it. The top of the two outer feet (3) is slidably connected to a shock absorber (4), and the two shock absorber (4) are fixedly connected to the bottom of the shoulder cover (2). The outer side of the two outer feet (3) is provided with an adjustment mechanism. The adjustment mechanism includes a fork pawl (6), the fork pawl (6) has a fork pawl hole (7) inside, the fork pawl hole (7) has an insert groove (8) arranged in a circular array inside, the fork pawl hole (7) has an eccentric insert (9) inside, the eccentric insert (9) has an insert strip (10) fixedly connected in a circular array on the outside, the insert strip (10) has a connecting hole (11) inside, and the connecting hole (11) has a threaded groove (12) inside.

2. The structure of an adjustable fork offset and height according to claim 1, characterized in that: A connecting sleeve (5) is fixedly connected to the outer side of each of the two outer feet (3), and a stabilizing frame (14) is fixedly connected to the outer side of each of the two connecting sleeves (5).

3. The structure of an adjustable fork offset and height according to claim 1, characterized in that: Both of the outer feet (3) are equipped with pneumatic buffer components inside, and the pneumatic buffer components and the shock absorber (4) are used in conjunction with each other.

4. The structure of an adjustable fork offset and height according to claim 1, characterized in that: The size of the embedding strip (10) matches the size of the embedding groove (8), and the embedding strip (10) and the embedding groove (8) are used in conjunction with each other.

5. The structure of an adjustable front fork offset and height according to claim 1, characterized in that: Tensioning grooves (13) are provided inside both of the fork hook holes (7).

6. The structure of an adjustable fork offset and height according to claim 1, characterized in that: The outer sides of the connecting column (1), shoulder cover (2), outer foot (3) and shock absorber (4) are all provided with anti-rust coating.