Airbag rattle suppression structure

Abstract

The application discloses a kind of air bag rattle inhibiting structures, belong to the technical field of automobile safety equipment, air bag positioning pin is equipped on steering wheel framework, air bag positioning pin outer circumference is equipped with air bag guide sleeve, air bag guide sleeve is contacted with steering wheel framework connection, air bag guide sleeve circumferential direction is evenly equipped with rebound spring, air bag positioning pin outer circumference is equipped with shock pad base, and shock pad base outer circumference is provided with shock pad.The application is provided with self-positioning and self-guiding function by the interference fit between the inhibiting block of sleeve outer circumferential side wall and steering wheel framework, limit the movement of air bag in the normal direction of the axis of air bag positioning pin, eliminate the air bag rattle caused by relative movement.Adopt the upper clamping plate of sleeve upper end circumferential direction is located in the outer circumferential direction of air bag positioning pin, and the multiple lower clamping claws of sleeve lower end circumferential direction are respectively clamped with the first framework positioning hole, second framework positioning hole and third framework positioning hole of steering wheel framework, realize the function of inhibiting rattle noise in bumpy road surface.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile safety equipment, and particularly relates to a safety air bag shock suppression structure. BACKGROUND

[0002] With the rapid development of the automobile industry, people's attention to automobile safety is also increasing. The safety air bag aims to provide additional protection for the driver when the automobile collides, reducing the harm caused by the collision. In the 21st century, with the continuous progress of automobile safety technology and the continuous improvement of vehicle quality, the requirement for vehicle NVH performance is getting higher and higher. The shock produced by the air bag on the bumpy road greatly affects the driving experience.

[0003] The current driver air bag mounting structure only describes the mounting structure of the air bag and the steering wheel and the matching structure after adding the damping module. After adding the damping module, the damping module is generally made of silica gel material, which is relatively soft in material properties, resulting in relative movement of the air bag mounting pin in the normal direction of the axis. During the road test of the automobile, a click sound will be produced, so it is necessary to optimize the structure to eliminate the air bag shock caused by relative movement. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the shortcomings of the prior art and provide an air bag shock suppression structure.

[0005] The technical scheme adopted to solve the above technical problem is that an air bag positioning pin is arranged on the steering wheel framework, an air bag guide sleeve is arranged on the outer circumference of the air bag positioning pin, the air bag guide sleeve is in contact connection with the steering wheel framework, a rebound spring is uniformly arranged in the circumferential direction of the air bag guide sleeve, one end of the rebound spring is fixedly connected with the air bag guide sleeve, the other end of the rebound spring is fixedly connected with a spring base, the spring base is located on the outer circumference of the air bag positioning pin, a damping block base is arranged above the spring base on the outer circumference of the air bag positioning pin, a damping block is arranged on the outer circumference of the damping block base, a plastic-encased shell is arranged on the outer circumference of the damping block, and a shell pressing plate is arranged on the outer side of the plastic-encased shell.

[0006] Further, the air bag guide sleeve comprises an upper clamping plate, a sleeve, a lower clamping jaw, a suppression block and a through hole, the upper clamping plate is uniformly arranged on the outer circumference of the air bag positioning pin in the circumferential direction of the upper end of the sleeve, a plurality of lower clamping jaws in contact connection with the steering wheel framework are uniformly arranged on the lower end of the sleeve in the circumferential direction, a through hole in penetration connection with the air bag positioning pin is processed in the middle of the sleeve, and the outer circumferential side wall of the sleeve is in contact connection with the steering wheel framework.

[0007] Further, the steering wheel framework is processed with a first framework positioning hole, a second framework positioning hole and a third framework positioning hole, and three lower clamping claws are uniformly arranged in the circumferential direction of the lower end of the sleeve and are respectively clamped with the first framework positioning hole, the second framework positioning hole and the third framework positioning hole.

[0008] Further, the first framework positioning hole and the second framework positioning hole are symmetrically arranged, and the third framework positioning hole is located below the first framework positioning hole and the second framework positioning hole.

[0009] Further, the upper end surface diameter of the sleeve is larger than the lower end surface diameter of the sleeve.

[0010] Further, the sleeve is uniformly provided with a plurality of suppression blocks in contact with the steering wheel framework.

[0011] Further, the interference fit between the suppression blocks of the outer circumferential side wall of the sleeve and the steering wheel framework is 0.2mm.

[0012] Further, the suppression blocks are in the shape of wavy sawtooth.

[0013] Further, the shape of the suppression blocks is diamond, rectangle or triangle.

[0014] Further, the airbag guide sleeve is connected with the lower contact point of the horn, and the spring base is connected with the upper contact point of the horn through the rebound spring.

[0015] The beneficial effects of the present application are as follows: (1) the interference fit between the suppression blocks of the outer circumferential side wall of the sleeve and the steering wheel framework is adopted, the suppression blocks have self-positioning and self-guiding functions, the movement of the airbag in the normal direction of the axis of the airbag positioning pin is limited, and the airbag shock caused by relative movement is eliminated.

[0016] (2) the upper clamping plate in the circumferential direction of the upper end of the sleeve is located in the outer circumferential direction of the airbag positioning pin, and the plurality of lower clamping claws in the circumferential direction of the lower end of the sleeve are respectively clamped with the first framework positioning hole, the second framework positioning hole and the third framework positioning hole of the steering wheel framework, so as to realize the function of suppressing the shock noise of the vehicle in the bumpy road. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0018] Figure 1 is a structural schematic diagram of one embodiment of the airbag shock suppression structure of the present application.

[0019] Figure 2 is a structural schematic diagram of the steering wheel framework.

[0020] Figure 3 is a structural schematic diagram of the airbag guide sleeve.

[0021] Figure 4 is Figure 3 is a bottom plan structural schematic diagram of the airbag guide sleeve.

[0022] Figure 5 is Figure 4 is a sectional view of A-A in the airbag guide sleeve.

[0023] Reference signs: 1, lower horn contact; 2, upper horn contact; 3, plastic-encased shell; 4, shell pressing plate; 5, shock-absorbing block base; 6, shock-absorbing block; 7, spring base; 8, rebound spring; 9, airbag guide sleeve; 901, upper clamping plate; 902, sleeve; 903, lower clamping jaw; 904, restraining block; 905, through hole; 10, steering wheel skeleton; 1001, first skeleton positioning hole; 1002, second skeleton positioning hole; 1003, third skeleton positioning hole; 11, airbag positioning pin. DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] The following detailed description is exemplary and is intended to provide further details in the present application. Unless otherwise specified, all technical terms used in the present application have the same meanings as those generally understood by those skilled in the art. The terms used in the present application are only for describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0026] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0027] As shown in Figure 1 , the present embodiment is coupled by the lower horn contact 1, the upper horn contact 2, the plastic-encased shell 3, the shell pressing plate 4, the shock-absorbing block base 5, the shock-absorbing block 6, the spring base 7, the rebound spring 8, the airbag guide sleeve 9, the steering wheel skeleton 10, and the airbag positioning pin 11.

[0028] Air bag positioning pin 11 is arranged on steering wheel skeleton 10, air bag positioning pin 11 is arranged with air bag guide sleeve 9 on the outer circumference, air bag guide sleeve 9 is connected with steering wheel skeleton 10, air bag guide sleeve 9 is uniformly arranged with rebound spring 8 in the circumferential direction, one end of rebound spring 8 is fixedly connected with air bag guide sleeve 9, the other end of rebound spring 8 is fixedly connected with spring base 7, spring base 7 is located on the outer circumference of air bag positioning pin 11, shock block base 5 is arranged on the outer circumference of air bag positioning pin 11, shock block 6 is arranged on the outer circumference of shock block base 5, plastic-encased housing 3 is arranged on the outer circumference of shock block 6, and housing pressure plate 4 is arranged on the outer side of plastic-encased housing 3. Air bag guide sleeve 9 is connected with lower horn contact 1, and spring base 7 is connected with upper horn contact 2 through rebound spring 8.

[0029] As shown in Figures 3 to 5 , air bag guide sleeve 9 includes upper clamping plate 901, sleeve 902, lower clamping jaw 903, suppression block 904, and through hole 905, upper clamping plate 901 is uniformly arranged on the outer circumference of air bag positioning pin 11 in the circumferential direction of the upper end of sleeve 902, a plurality of lower clamping jaws 903 are uniformly arranged on the outer circumference of air bag positioning pin 11 in the circumferential direction of the lower end of sleeve 902, through hole 905 is arranged in sleeve 902, and air bag positioning pin 11 penetrates through hole 905, and the outer circumferential side wall of sleeve 902 is connected with steering wheel skeleton 10. The diameter of the upper end surface of sleeve 902 is greater than the diameter of the lower end surface of sleeve 902. A plurality of suppression blocks 904 are uniformly arranged on the outer circumference of sleeve 902 and are in contact with steering wheel skeleton 10. The interference fit between suppression block 904 on the outer circumferential side wall of sleeve 902 and steering wheel skeleton 10 is 0.2mm, suppression block 904 is in the shape of a wave sawtooth, suppression block 904 is in the shape of a rhombus or a rectangle or a triangle, suppression block 904 has self-positioning and self-guiding functions, and the movement of the air bag in the normal direction of the axis of air bag positioning pin 11 is limited.

[0030] As shown in Figure 2 , first skeleton positioning hole 1001, second skeleton positioning hole 1002 and third skeleton positioning hole 1003 are arranged on steering wheel skeleton 10, three lower clamping jaws 903 are uniformly arranged on the lower end of sleeve 902 and are respectively clamped with first skeleton positioning hole 1001, second skeleton positioning hole 1002 and third skeleton positioning hole 1003, first skeleton positioning hole 1001 and second skeleton positioning hole 1002 are symmetrically arranged, and third skeleton positioning hole 1003 is located below first skeleton positioning hole 1001 and second skeleton positioning hole 1002, thereby realizing the function of suppressing shock noise of the vehicle on a bumpy road.

[0031] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit it. Although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered in the protection scope of the claims of the present application.

Claims

1. An airbag rattle suppressing structure characterized by comprising: Air bag positioning pin (11) is arranged on steering wheel skeleton (10), air bag positioning pin (11) is provided with air bag guide sleeve (9) on outer circumference, air bag guide sleeve (9) is connected with steering wheel skeleton (10), air bag guide sleeve (9) is uniformly provided with rebound spring (8) in circumferential direction, one end of rebound spring (8) is fixedly connected with air bag guide sleeve (9), the other end of rebound spring (8) is fixedly connected with spring base (7), spring base (7) is located on the outer circumference of air bag positioning pin (11), the outer circumference of air bag positioning pin (11) is provided with damping block base (5) located above spring base (7), damping block base (5) is provided with damping block (6) on outer circumference, damping block (6) is provided with plastic-coated shell (3) on outer circumference, plastic-coated shell (3) is provided with shell pressing plate (4) on outer side; The air bag guide sleeve (9) comprises an upper clamping plate (901), a sleeve (902), a lower jaw (903), a suppression block (904) and a through hole (905), the upper clamping plate (901) is uniformly arranged on the outer circumference of the sleeve (902) and located on the outer circumference of the air bag positioning pin (11), a plurality of lower jaws (903) are uniformly arranged on the lower end of the sleeve (902) and connected with the steering wheel skeleton (10), the through hole (905) is arranged in the sleeve (902) and connected with the air bag positioning pin (11), and the outer circumferential side wall of the sleeve (902) is connected with the steering wheel skeleton (10). The first skeleton positioning hole (1001), the second skeleton positioning hole (1002) and the third skeleton positioning hole (1003) are arranged on the steering wheel skeleton (10), and the three lower jaws (903) are uniformly arranged on the lower end of the sleeve (902) and connected with the first skeleton positioning hole (1001), the second skeleton positioning hole (1002) and the third skeleton positioning hole (1003) respectively. The sleeve (902) is uniformly provided with a plurality of suppression blocks (904) in contact with the steering wheel skeleton (10) on the outer circumferential side wall. The suppression blocks (904) on the outer circumferential side wall of the sleeve (902) are in interference fit with the steering wheel skeleton (10).

2. The airbag rattle suppressing structure according to claim 1, characterized by: The first skeleton positioning hole (1001) and the second skeleton positioning hole (1002) are symmetrically arranged, and the third skeleton positioning hole (1003) is located below the first skeleton positioning hole (1001) and the second skeleton positioning hole (1002).

3. The airbag rattle suppression structure according to claim 1, characterized by: The upper end face diameter of the sleeve (902) is greater than the lower end face diameter of the sleeve (902).

4. The airbag rattle suppression structure according to claim 1, characterized by: The interference fit between the suppression blocks (904) on the outer circumferential side wall of the sleeve (902) and the steering wheel skeleton (10) is 0.2mm.

5. The airbag rattle suppression structure according to claim 1, characterized by: The suppression blocks (904) are in the shape of wavy sawtooth.

6. The airbag rattle suppression structure according to claim 1, characterized by: The suppression blocks (904) are in the shape of rhombus, rectangle or triangle.

7. The airbag rattle suppression structure according to claim 1, characterized by: The air bag guide sleeve (9) is connected with the lower contact (1) of the horn, and the spring base (7) is connected with the upper contact (2) of the horn through the rebound spring (8).

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