A structure for assembling an air bag for a driver's seat and a steering wheel

Abstract

This utility model relates to the field of automotive safety technology, specifically disclosing a structure for assembling a car driver's seat airbag and steering wheel. The structure includes: a steering wheel body, which is a wheel-shaped device for controlling the direction of the car's movement; the steering wheel body is assembled and connected to an airbag assembly component; the airbag assembly component includes an airbag shell, a frame, a spring, and a spring retainer. This structure for assembling a car driver's seat airbag and steering wheel utilizes a three- or four-hook structure on the airbag shell that engages with the hooks of the spring retainer. Combined with a pre-assembly structure using a snap-fit ​​spring, assembly only requires pressing down the airbag shell to engage the retainer with the hook grooves, simplifying the assembly process and improving the efficiency of large-scale production at vehicle manufacturers. This snap-fit ​​connection, combined with the elastic force of the spring, avoids the risk of bolt loosening, ensuring a stable connection between the airbag assembly component and the steering wheel body over a long period, providing a fundamental guarantee for the stable deployment of the airbag during a collision.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety technology, specifically a structure for assembling a driver's seat airbag and steering wheel in a car. Background Technology

[0002] In recent years, the automotive industry has developed rapidly, with the number of motor vehicles continuing to rise, and the incidence of road traffic accidents remaining high. Against this backdrop, motor vehicle collision accidents account for a prominent proportion, posing a serious threat to the lives of drivers and passengers. As a core component of passive safety, airbags can effectively reduce the probability and severity of injury when a vehicle is involved in a collision.

[0003] As a core safety module that directly protects the driver, the driver's side airbag has become a mandatory standard component in almost all motor vehicle models. The existing assembly structure of the driver's side airbag and steering wheel uses multiple sets of bolts for fastening. Not only is the assembly process cumbersome and requires special tools, reducing the assembly efficiency of vehicle manufacturers, but the bolts are also prone to loosening after long-term use, affecting the stability of airbag deployment. In addition, some structures use snap ring connections. Because the frame limit is only limited in one direction, the snap ring is prone to loosening under the impact force when the airbag is deployed, causing the airbag assembly components to shift and failing to guarantee the protective effect. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for assembling a car driver's seat airbag and steering wheel, in order to solve the problems mentioned in the background art. The existing assembly structure of the driver's seat airbag and steering wheel uses multiple sets of bolts for fastening, which makes the assembly process cumbersome. Moreover, after long-term use, the bolts are prone to loosening, affecting the stability of the airbag deployment. In addition, some structures use snap ring connections, but because the frame limit is only limited in one direction, the snap ring is prone to loosening under the impact force when the airbag is deployed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a structure for assembling an airbag and steering wheel in a car driver's seat, comprising a steering wheel body, which is a wheel-shaped device for controlling the direction of the car's travel, wherein the steering wheel body is assembled and connected to the airbag assembly assembly. The airbag assembly includes an airbag housing, a frame, a spring, and a spring clip. The airbag housing is assembled and connected to the steering wheel body through its own frame. The airbag housing has a groove for placing the driver's seat airbag, and a hook is provided at the bottom of the airbag housing. The hook of the airbag housing is fitted with a spring.

[0006] By adopting the above technical solution, the steering wheel body is integrated with the airbag assembly assembly containing the airbag housing, frame, spring, and spring clip. The frame is used to achieve a stable connection between the two. The airbag housing groove can reliably house the driver's seat airbag, and the hook sleeve with spring lays the foundation for subsequent fastening and buffering.

[0007] Preferably, the airbag shell is made of plastic or metal, and the airbag shell has three hook structures, and the airbag shell is hooked to the spring clip through the three hook structures.

[0008] Using the above technical solution, the three hooks are engaged with the spring clips, eliminating the need for bolts, simplifying the assembly process, and improving the assembly efficiency of vehicle manufacturers.

[0009] Preferably, the hook of the airbag shell is a columnar structure, and the surface of the columnar structure is provided with an inverted buckle structure, which is used to install a spring.

[0010] Using the above technical solution, the inverted structure of the columnar hook can accurately position and install the spring, prevent the spring from shifting after assembly, ensure the stable transmission of spring force, and provide reliable support for the firm connection between the airbag and the steering wheel and for pressure cushioning.

[0011] Preferably, the beveled surface of the hook of the airbag housing abuts against the elastic retaining spring, and the surface of the hook of the airbag housing is provided with a groove that matches the elastic retaining spring.

[0012] Using the above technical solution, the hook bevel facilitates the deformation of the spring retainer when pressed down, and the matching groove allows the retainer to be precisely positioned after rebounding, achieving rapid and secure fastening of the airbag shell without loosening, thus improving connection stability.

[0013] Preferably, the frame is configured as a composite structure in both horizontal and vertical directions, and the frame is installed and limited to the steering wheel body.

[0014] By adopting the above technical solution, the composite structure of horizontal and vertical frames can form a two-way installation limit for the steering wheel body, preventing frame displacement.

[0015] Preferably, the elastic retaining ring is connected to the surface structure of the skeleton.

[0016] By adopting the above technical solution, the elastic retaining ring is connected to the surface structure of the skeleton, and can be stably fixed by relying on the skeleton structure to avoid the retaining ring from being installed off-center.

[0017] Preferably, the assembly height of the steering wheel body and the airbag assembly assembly is adjusted to set the pressing stroke.

[0018] By adopting the above technical solution, the pressing stroke can be set by adjusting the assembly height of the steering wheel body and the airbag assembly components. This can be combined with the spring elasticity coefficient to accurately match the pressing requirements of different models, ensuring a stable and consistent pressing feel in daily use.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the structure for assembling a car driver's seat airbag and steering wheel is as follows: 1. By using three or four hooks on the airbag housing to engage with the hooks of the spring retainer, and combining the spring with the pre-assembly structure of the inverted structure, the airbag housing only needs to be pressed down during assembly to lock the retainer into the hook groove to complete the fastening. This simplifies the assembly process, improves the efficiency of large-scale production at vehicle manufacturers, and at the same time, the snap-fit ​​connection, combined with the elastic force of the spring, can avoid the risk of bolt loosening and ensure that the airbag assembly components and the steering wheel body maintain a stable connection for a long time, providing a basic guarantee for the stable deployment of the airbag during a collision. 2. The frame adopts a composite limiting structure in the horizontal and vertical directions, which can form a two-way constraint on the elastic retaining ring. When the airbag is deployed and generates impact force, the two-way limiting of the frame can effectively offset the impact force on the retaining ring, prevent the retaining ring from shifting or loosening, and ensure that the airbag assembly components are always firmly connected to the steering wheel body, preventing the airbag deployment position from shifting due to component loosening, and ensuring that the protective function is effectively performed. 3. Furthermore, relying on the inverted connection between the spring and the airbag housing, and the adjustable assembly height of the steering wheel body and the airbag assembly components, the pressing stroke of the airbag module can be precisely set by adjusting the spring elastic coefficient and the assembly height. At the same time, since the overall structure adopts a snap-fit ​​and elastic connection rather than bolt fixation, there is no need to remove the bolts during later maintenance. The components can be disassembled simply by using external force to disengage the elastic spring from the hook groove, reducing maintenance time and cost, and further improving the practicality of the structure. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the overall external structure of this utility model. Figure 2 This is a schematic diagram of the overall three-dimensional side view of the present invention; Figure 3 This utility model Figure 1 Enlarged structural diagram at point B; Figure 4 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point A-A'; Figure 5 This is a schematic diagram of the assembly process of this utility model.

[0021] In the diagram: 1. Airbag assembly; 101. Airbag shell; 102. Frame; 103. Spring; 104. Elastic retaining ring; 2. Steering wheel body. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a structure for assembling an airbag and steering wheel in a car driver's seat, including an airbag assembly component 1, an airbag shell 101, a frame 102, a spring 103, a spring retaining ring 104, and a steering wheel body 2. Among them, the steering wheel body 2 is a wheel-shaped device for controlling the direction of the car's driving, and the steering wheel body 2 is assembled and connected to the airbag assembly assembly 1. The airbag assembly 1 includes an airbag housing 101, a frame 102, a spring 103, and a spring retainer 104. The airbag housing 101 is assembled and connected to the steering wheel body 2 through its frame 102. The airbag housing 101 has a groove for accommodating the driver's seat airbag, and a hook is provided at the bottom of the airbag housing 101. The spring 103 is sleeved on the hook of the airbag housing 101. The airbag housing 101 is made of plastic or metal, and the airbag housing 101 has three hook structures, which are used to connect the airbag housing 101 to the spring retainer 104. The hook of the airbag housing 101 is a columnar structure, and the surface of the columnar structure is provided with an inverted structure, which is used to install the spring 103. The inclined surface of the hook of the airbag housing 101 abuts against the elastic spring 104, and the surface of the hook of the airbag housing 101 is provided with a groove that matches the elastic spring 104. The frame 102 is set as a composite structure in the horizontal and vertical directions, and the frame 102 is installed and limited with the steering wheel body 2. The elastic spring 104 is connected to the surface structure of the frame 102. The assembly height of the steering wheel body 2 and the airbag assembly assembly 1 is adjusted by setting the pressing stroke. Referring to the attached diagrams in the instruction manual Figures 1-5 As shown, the frame 102 is installed and positioned with the steering wheel body 2 through its composite structure in the horizontal and vertical directions, forming the basic support of the entire assembly structure and ensuring that the frame 102 is stable on the steering wheel body 2. The elastic retaining ring 104 is connected and fixed to the surface structure of the frame 102. With the help of the limiting structure of the frame 102 itself, the elastic retaining ring 104 is initially positioned. The spring 103 is installed in place through the inverted buckle structure on the hook of the airbag housing 101, completing the pre-assembly of the airbag housing 101 and the spring 103, ensuring that the connection between the spring 103 and the airbag housing 101 is stable. The airbag housing 101 with the pre-installed spring 103 is pressed down, so that the inclined surface of the hook of the airbag housing 101 abuts against the elastic retaining ring 104. The pressure is continuously applied to compress and deform the elastic retaining ring 104 until the elastic retaining ring 104 is inserted into the matching groove on the surface of the hook of the airbag housing 101, completing the overall fastening connection between the airbag assembly component 1 and the steering wheel body 2. During the above assembly process, by adjusting the assembly height of the steering wheel body 2 and the airbag assembly component 1, and combining the elastic coefficient of the spring 103 itself, the pressing stroke of the airbag module is set to ensure that the preset operating parameter requirements are met. During normal operation, when the airbag housing 101 is pressed, the airbag housing 101 drives the spring 103 to produce elastic deformation. The deformation of the spring 103 provides a pressing buffer force. At the same time, the cooperation between the elastic retaining ring 104 and the hook groove of the airbag housing 101 can limit the excessive displacement of the airbag housing 101, ensuring a stable pressing feel and avoiding excessive displacement. When a vehicle collision occurs and the airbag needs to deploy, the horizontal and vertical composite structure of the frame 102 will form a bidirectional limit on the elastic retaining ring 104, effectively preventing the elastic retaining ring 104 from loosening under the impact force of airbag deployment. This ensures the firm connection between the airbag assembly 1 and the steering wheel body 2, provides reliable structural support for the smooth inflation and deployment of the airbag, and ensures the effective realization of the safety protection function.

[0024] Working principle: When using this structure for assembling car driver's seat airbags and steering wheels, firstly, the frame 102 is installed and positioned with the steering wheel body 2 through a composite structure in the horizontal and vertical directions to form an assembly base. Then, the spring clip 104 is connected and fixed to the surface structure of the frame 102. The initial positioning is achieved with the help of the positioning structure of the frame 102. Next, the spring 103 is installed in place through the inverted buckle structure on the hook of the airbag housing 101. Then, the airbag housing 101 is pressed down, and its hook inclined surface abuts against the spring clip 104 and forces the clip to compress and deform until the spring clip 104 is inserted into the matching groove on the hook surface, thus completing the fastening connection between the airbag assembly component 1 and the steering wheel body 2. During assembly, the assembly height of the steering wheel body 2 and the airbag assembly component 1 is adjusted, and the spring coefficient of the spring 103 is combined to set the pressing stroke of the airbag module. In daily operation, when the airbag housing 101 is pressed, the spring 103 generates elastic deformation to provide cushioning, and the cooperation between the elastic retaining spring 104 and the hook groove limits excessive displacement and ensures a stable pressing feel. When the airbag deploys, the horizontal and vertical composite structure of the frame 102 forms a two-way limit on the elastic retaining spring 104, effectively preventing the retaining spring from loosening, ensuring the firm connection between the airbag assembly 1 and the steering wheel body 2, providing structural support for the smooth inflation and deployment of the airbag, and increasing the overall practicality.

[0025] 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. A structure for assembling a driver's seat airbag and steering wheel in an automobile, comprising: The steering wheel body (2) is a wheel-shaped device for controlling the direction of the car's travel. The steering wheel body (2) is assembled and connected to the airbag assembly (1). The airbag assembly (1) is characterized in that: the airbag assembly component (1) includes an airbag housing (101), a frame (102), a spring (103) and a spring clip (104), and the airbag housing (101) is assembled and connected to the steering wheel body (2) through the frame (102) contained therein. The airbag housing (101) is provided with a groove for placing the driver's seat airbag, and a hook is provided at the bottom end of the airbag housing (101). The hook of the airbag housing (101) is fitted with a spring (103).

2. The structure for assembling a car driver's seat airbag and steering wheel according to claim 1, characterized in that: The airbag housing (101) is made of plastic or metal, and the airbag housing (101) is provided with three hook structures, and the airbag housing (101) is connected to the spring clip (104) through the three hook structures.

3. The structure for assembling a car driver's seat airbag and steering wheel according to claim 2, characterized in that: The hook of the airbag housing (101) is a columnar structure, and the surface of the columnar structure is provided with an inverted buckle structure, which is used to install the spring (103).

4. The structure for assembling a car driver's seat airbag and steering wheel according to claim 1, characterized in that: The hook bevel of the airbag housing (101) abuts against the elastic spring clip (104), and the surface of the hook of the airbag housing (101) is provided with a groove that is adapted to the elastic spring clip (104).

5. The structure for assembling a car driver's seat airbag and steering wheel according to claim 1, characterized in that: The frame (102) is configured as a composite structure in the horizontal and vertical directions, and the frame (102) is installed and limited to the steering wheel body (2).

6. The structure for assembling a car driver's seat airbag and steering wheel according to claim 1, characterized in that: The elastic snap ring (104) is connected to the surface structure of the skeleton (102).

7. The structure for assembling a car driver's seat airbag and steering wheel according to claim 1, characterized in that: The assembly height of the steering wheel body (2) and the airbag assembly assembly (1) is adjusted to set the pressing stroke.

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