A linkage structure of a steering wheel and a clock spring
By using the design of U-shaped linkage components and limiting ribs, the spatial adaptability and weight issues of the linkage structure between the car steering wheel and the clock spring are solved, achieving a lightweight, low-cost, and precise installation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EAST JOY LONG MOTOR AIRBAG
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-04
AI Technical Summary
The existing linkage structure between the automotive steering wheel and the clock spring has problems such as limited space, complexity, heavy weight, high cost, and difficult assembly, which cannot meet the requirements of compact and lightweight design.
The U-shaped linkage is made of nylon and glass fiber through integral injection molding. It combines X-direction limiting ribs and Y-direction limiting ribs with the outer periphery of the U-shaped linkage and is fastened with self-tapping screws to achieve precise positioning and fixed connection between the car steering wheel and the clock spring.
It enables flexible installation in confined spaces, saving 30% to 50% of installation space, reducing weight by 60% to 70%, lowering material costs by 40% to 50%, and providing high installation accuracy and a firm connection with a positioning accuracy of ±0.1mm.
Smart Images
Figure CN224589082U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive steering wheel technology, and in particular to a linkage mounting structure between an automotive steering wheel and a clock spring. Background Technology
[0002] The clock spring plays a crucial role in ensuring the smooth circuit connection of electrical components such as the driver's front airbag and horn switch. As an electrical rotating connector in the car's airbag system, it is located below the steering wheel and provides a highly reliable current transmission function between two relatively rotating parts. Its structure includes key components such as a flexible flat cable, a relatively rotating housing, a wiring harness (conductive lead wire), and connectors.
[0003] Currently, automotive steering wheel and clock springs mostly use a frame-hole linkage method, which often faces the problem of limited frame space. This results in the transmission metal linkage components being complex in structure, large in size, or heavy, making installation or stable transmission difficult. In addition, existing linkage structures mostly use metal materials and multiple component combinations, which have problems such as high processing costs, high assembly difficulty, and poor space adaptability, failing to meet the design requirements of compactness and lightweighting.
[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a linkage installation structure for a car steering wheel and clock spring that is spatially adaptable, securely installed, precisely positioned, lightweight, and low-cost, in order to address the shortcomings of the existing technology.
[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution: A linkage mounting structure for a car steering wheel and a clock spring includes a U-shaped linkage component located between the car steering wheel and the clock spring. The U-shaped linkage component has at least two threaded through holes spaced apart. A threaded mounting hole corresponding to each threaded through hole is formed on the surface of the car steering wheel frame. The U-shaped linkage component has at least two linkage mounting through holes spaced apart. A linkage post corresponding to each linkage mounting through hole is provided on the surface of the clock spring. During installation, self-tapping screws are passed through the threaded through holes on the U-shaped linkage and tightened into the threaded mounting holes on the frame to fix the U-shaped linkage to the frame. The linkage pin on the clock spring is then inserted into the linkage mounting through hole of the U-shaped linkage with an interference fit.
[0007] In a preferred embodiment of this utility model, there are two threaded through holes arranged symmetrically with respect to the center line of the U-shaped linkage, and there are two linkage mounting through holes arranged symmetrically with respect to the center line of the U-shaped linkage.
[0008] In a preferred embodiment of this utility model, a plurality of X-direction limiting ribs and a plurality of Y-direction limiting ribs are provided circumferentially at intervals on the surface of the skeleton for engaging with the outer periphery of the U-shaped linkage and for limiting the U-shaped linkage. In a preferred embodiment of this utility model, the U-shaped linkage is made of nylon and glass fiber materials.
[0009] In a preferred embodiment of this utility model, the U-shaped linkage is integrally injection molded.
[0010] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: 1. Strong spatial adaptability. This utility model adopts a unique irregular shape design and compact structure, which allows it to be flexibly installed in narrow frame spaces. Compared with traditional linkage structures, it can save about 30% to 50% of installation space.
[0011] 2. Secure and precise installation. This utility model achieves XY-direction positioning by cooperating with the outer periphery of the U-shaped linkage through the X-direction and Y-direction limiting ribs on the frame. It is then secured with self-tapping screws, resulting in high installation accuracy and a secure connection. This effectively prevents displacement or loosening during use, and the positioning accuracy can reach ±0.1mm.
[0012] 3. Lightweight and low cost. This utility model uses injection-molded nylon and glass fiber materials, which reduces the weight by about 60% to 70% compared to metal linkage parts of the same volume, while reducing material costs by about 40% to 50%. Moreover, the injection molding process is simple and has high production efficiency. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the assembly structure of this utility model.
[0015] Figure 2 This is an exploded structural diagram of the present invention.
[0016] Figure 3This is a structural schematic diagram of the U-shaped linkage component of this utility model. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0018] See Figure 1 and Figure 2 and combined Figure 3 The figure shows a linkage installation structure between a car steering wheel and a clock spring, including a U-shaped linkage 100, which is located between the car steering wheel and the clock spring 20.
[0019] The U-shaped linkage 100 is made of nylon and glass fiber through one-piece injection molding, which reduces the weight by about 60% to 70% compared to metal linkages of the same volume. At the same time, the material cost is reduced by about 40% to 50%, and the injection molding process is simple and has high production efficiency.
[0020] Two threaded through holes 110 are spaced apart on the U-shaped linkage 100 and arranged symmetrically around the center line of the U-shaped linkage 100. Of course, the number of threaded through holes 110 is not limited to that in this embodiment, and should be set according to the fixed installation requirements. Threaded mounting holes 11 corresponding to each threaded through hole 110 are provided on the surface of the car steering wheel frame 10.
[0021] The U-shaped linkage 100 has two linkage mounting through holes 120 spaced apart and arranged symmetrically around the center line of the U-shaped linkage 100. Of course, the number of linkage mounting through holes 120 is not limited to that in this embodiment, and should be set according to the installation requirements. A linkage post 21 corresponding to each linkage mounting through hole 120 is provided on the surface of the clock spring 20.
[0022] A plurality of X-direction limiting ribs 12 and a plurality of Y-direction limiting ribs 13 are provided circumferentially on the surface of the skeleton 10. The plurality of X-direction limiting ribs 12 and the plurality of Y-direction limiting ribs 13 cooperate with the outer periphery 130 of the U-shaped linkage 100 to limit the U-shaped linkage 100 and realize XY direction limiting.
[0023] During installation, self-tapping screws 200 are passed through the threaded through-hole 110 on the U-shaped linkage 100 and tightened into the threaded mounting hole 11 on the frame 10, so that the U-shaped linkage 100 is fixed on the frame 10. The linkage pin 21 on the clock spring 20 is inserted into the linkage mounting through-hole 120 of the U-shaped linkage 100 with an interference fit, so that the clock spring 20 is fixedly connected to the U-shaped linkage 100. The linkage between the car steering wheel and the clock spring is realized through the U-shaped linkage 100.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A linkage mounting structure for an automobile steering wheel and a clock spring, characterized in that, The system includes a U-shaped linkage component located between the car steering wheel and the clock spring. The U-shaped linkage component has at least two threaded through holes spaced apart. A threaded mounting hole corresponding to each threaded through hole is provided on the surface of the car steering wheel frame. The U-shaped linkage component has at least two linkage mounting through holes spaced apart. A linkage post corresponding to each linkage mounting through hole is provided on the surface of the clock spring. During installation, self-tapping screws are passed through the threaded through holes on the U-shaped linkage and tightened into the threaded mounting holes on the frame to fix the U-shaped linkage to the frame. The linkage pin on the clock spring is then inserted into the linkage mounting through hole of the U-shaped linkage with an interference fit.
2. The linkage mounting structure of the automobile steering wheel and clock spring as described in claim 1, characterized in that, The threaded through holes are two in number and are arranged symmetrically with respect to the center line of the U-shaped linkage. The linkage mounting through holes are two in number and are arranged symmetrically with respect to the center line of the U-shaped linkage.
3. The linkage mounting structure of the automobile steering wheel and clock spring as described in claim 1, characterized in that, The surface of the skeleton is provided with several X-direction limiting ribs and several Y-direction limiting ribs that are spaced apart circumferentially to cooperate with the outer periphery of the U-shaped linkage and to limit the U-shaped linkage.
4. The linkage mounting structure of the automobile steering wheel and clock spring as described in claim 1, characterized in that, The U-shaped linkage is made of nylon and fiberglass materials.
5. The linkage mounting structure of the automobile steering wheel and clock spring as described in claim 4, characterized in that, The U-shaped linkage component is integrally injection molded.