Safety air bag vibration suppression structure

Abstract

The invention discloses a shock suppression structure for a safety air bag, and belongs to the technical field of automobile safety equipment. An air bag positioning pin is arranged on a steering wheel framework, an air bag guide sleeve is arranged on the outer circumference of the air bag positioning pin and is in contact connection with the steering wheel framework, and rebound springs are uniformly arranged in the circumferential direction of the air bag guide sleeve; damping block bases are arranged on the outer circumferences of the air bag positioning pins, and damping blocks are arranged on the outer circumferences of the damping block bases. Through interference fit between the restraining blocks on the outer circumferential side wall of the sleeve and the steering wheel framework, the self-positioning and self-guiding functions are achieved, movement of the air bag in the normal direction of the axis of the air bag positioning pin is limited, and air bag vibration sound caused by relative movement is eliminated. An upper clamping plate in the circumferential direction of the upper end of a sleeve is located in the outer circumferential direction of an air bag positioning pin, a plurality of lower clamping jaws in the circumferential direction of the lower end of the sleeve are connected with a first framework positioning hole, a second framework positioning hole and a third framework positioning hole of a steering wheel framework in a clamped mode respectively, and the function of restraining vibration noise of a vehicle on a bumpy road surface is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile safety equipment, and in particular relates to a safety airbag vibration suppression structure. Background Art

[0002] With the rapid development of the automobile industry, people are paying more and more attention to automobile safety. Airbags are designed to provide additional protection for drivers when a car collides with other cars, reducing the damage caused by the collision. After entering the 21st century, with the continuous advancement of automobile safety technology and the continuous improvement of vehicle quality, the requirements for the NVH performance of the vehicle are getting higher and higher. The vibration caused by airbags on bumpy roads has greatly affected the driving experience.

[0003] The current driver airbag installation structure only describes the installation structure of the airbag and the steering wheel and the matching structure after adding a shock-absorbing module. After the shock-absorbing module is added, the shock-absorbing module is generally made of silicone, which has a relatively soft material property, resulting in relative movement of the airbag installation pin in the normal direction of the axis, which will produce a rattling sound during the vehicle road test. Therefore, it is necessary to optimize the structure for the road test vibration problem to eliminate the airbag vibration caused by relative movement. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a.

[0005] The technical solution adopted to solve the above technical problems is: an airbag locating pin is arranged on the steering wheel frame, an airbag guide sleeve is arranged on the outer circumference of the airbag locating pin, the airbag guide sleeve is in contact with the steering wheel frame, and rebound springs are evenly arranged in the circumferential direction of the airbag guide sleeve, one end of the rebound spring is fixedly connected to the airbag guide sleeve, and the other end of the rebound spring is fixedly connected to the spring base, the spring base is located on the outer circumference of the airbag locating pin, a shock-absorbing block base is arranged on the outer circumference of the airbag locating pin and is located above the spring base, a shock-absorbing block is arranged on the outer circumference of the shock-absorbing block base, a plastic-coated shell is arranged on the outer circumference of the shock-absorbing block, and a shell pressure plate is arranged on the outer side of the plastic-coated shell.

[0006] Furthermore, the airbag guide sleeve includes an upper clamping plate, a sleeve, a lower claw, a suppression block, and a through hole. The upper clamping plate located in the outer circumferential direction of the airbag locating pin is evenly arranged in the circumferential direction of the upper end of the sleeve, and multiple lower claws engaged with the steering wheel frame are evenly arranged in the circumferential direction of the lower end of the sleeve. A through hole connected to the airbag locating pin is processed in the middle of the sleeve, and the outer circumferential side wall of the sleeve is in contact and connected with the steering wheel frame.

[0007] Furthermore, the steering wheel skeleton is processed with a first skeleton positioning hole, a second skeleton positioning hole, and a third skeleton positioning hole, and three lower clamping claws are evenly arranged in the circumferential direction of the lower end of the sleeve and are respectively engaged with the first skeleton positioning hole, the second skeleton positioning hole, and the third skeleton positioning hole.

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

[0009] Furthermore, the diameter of the upper end surface of the sleeve is greater than the diameter of the lower end surface of the sleeve.

[0010] Furthermore, a plurality of restraining blocks in contact with the steering wheel frame are evenly arranged in the outer circumferential direction of the sleeve.

[0011] Furthermore, the interference fit between the restraining block on the outer circumferential side wall of the sleeve and the steering wheel frame is 0.2 mm.

[0012] Furthermore, the suppression block is in a wavy sawtooth shape.

[0013] Furthermore, the shape of the suppression block is rhombus, rectangle or triangle.

[0014] Furthermore, the airbag guide sleeve is connected to the lower contact of the speaker, and the spring base is connected to the upper contact of the speaker through a rebound spring.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention adopts an interference fit between the suppression block on the outer circumferential side wall of the sleeve and the steering wheel frame. The suppression block has self-positioning and self-guiding functions, which limits the movement of the airbag in the normal direction of the axis of the airbag positioning pin and eliminates the airbag vibration caused by relative movement.

[0016] (2) The present invention adopts an upper clamping plate in the circumferential direction of the upper end of the sleeve, which is located in the outer circumferential direction of the airbag positioning pin, and a plurality of lower clamping claws in the circumferential direction of the lower end of the sleeve are respectively engaged with the first frame positioning hole, the second frame positioning hole, and the third frame positioning hole of the steering wheel frame, thereby realizing the function of suppressing vibration noise of the vehicle on bumpy roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic structural diagram of an embodiment of the airbag shock suppression structure of the present invention.

[0018] Figure 2 It is a structural diagram of the steering wheel skeleton.

[0019] Figure 3 It is a schematic diagram of the structure of the airbag guide sleeve.

[0020] Figure 4 yes Figure 3 Schematic diagram of the bottom plane structure.

[0021] Figure 5 yes Figure 4 Sectional view of AA.

[0022] Figure numerals: 1. lower contact of the speaker; 2. upper contact of the speaker; 3. plastic-coated shell; 4. shell pressure 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 claw; 904. suppression block; 905. through hole; 10. steering wheel frame; 1001. first frame positioning hole; 1002. second frame positioning hole; 1003. third frame positioning hole; 11. airbag positioning pin. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0024] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] like Figure 1 As shown, this embodiment is composed of a lower speaker contact 1, an upper speaker contact 2, a plastic-coated shell 3, a shell pressure plate 4, a shock-absorbing block base 5, a shock-absorbing block 6, a spring base 7, a rebound spring 8, an airbag guide sleeve 9, a steering wheel frame 10, and an airbag positioning pin 11.

[0027] An airbag positioning pin 11 is arranged on the steering wheel frame 10, and an airbag guide sleeve 9 is arranged on the outer circumference of the airbag positioning pin 11. The airbag guide sleeve 9 is in contact with the steering wheel frame 10, and a rebound spring 8 is evenly arranged on the circumferential direction of the airbag guide sleeve 9. One end of the rebound spring 8 is fixedly connected to the airbag guide sleeve 9, and the other end of the rebound spring 8 is fixedly connected to the spring base 7. The spring base 7 is located on the outer circumference of the airbag positioning pin 11. A shock-absorbing block base 5 located above the spring base 7 is arranged on the outer circumference of the airbag positioning pin 11. A shock-absorbing block 6 is arranged on the outer circumference of the shock-absorbing block base 5. A plastic-coated shell 3 is arranged on the outer circumference of the plastic-coated shell 3, and a shell pressure plate 4 is arranged on the outer side of the plastic-coated shell 3. The airbag guide sleeve 9 is connected to the lower contact 1 of the speaker, and the spring base 7 is connected to the upper contact 2 of the speaker through the rebound spring 8.

[0028] like Figures 3 to 5 As shown, the airbag guide sleeve 9 includes an upper clamping plate 901, a sleeve 902, a lower clamping claw 903, a suppression block 904, and a through hole 905. The upper clamping plate 901 is evenly arranged in the circumferential direction of the upper end of the sleeve 902 and is located in the outer circumferential direction of the airbag positioning pin 11. A plurality of lower clamping claws 903 that are engaged with the steering wheel skeleton 10 are evenly arranged in the circumferential direction of the lower end of the sleeve 902. A through hole 905 that is connected to the airbag positioning pin 11 is processed in the middle of the sleeve 902, and the outer circumferential side wall of the sleeve 902 is in contact with the steering wheel skeleton 10. The diameter of the upper end face of the sleeve 902 is greater than the diameter of the lower end face of the sleeve 902. A plurality of suppression blocks 904 that are in contact with the steering wheel skeleton 10 are evenly arranged in the outer circumferential direction of the sleeve 902. The interference fit between the suppression block 904 on the outer circumferential side wall of the sleeve 902 and the steering wheel frame 10 is 0.2 mm. The suppression block 904 is in a wavy serrated shape. The shape of the suppression block 904 is a diamond, a rectangle or a triangle. The suppression block 904 has self-positioning and self-guiding functions, limiting the movement of the airbag in the normal direction of the axis of the airbag positioning pin 11.

[0029] like Figure 2 As shown, the steering wheel frame 10 is processed with a first frame positioning hole 1001, a second frame positioning hole 1002, and a third frame positioning hole 1003, and three lower clamping claws 903 are evenly arranged in the circumferential direction of the lower end of the sleeve 902, which are respectively engaged with the first frame positioning hole 1001, the second frame positioning hole 1002, and the third frame positioning hole 1003. The first frame positioning hole 1001 and the second frame positioning hole 1002 are symmetrically arranged, and the third frame positioning hole 1003 is located below the first frame positioning hole 1001 and the second frame positioning hole 1002, thereby realizing the function of suppressing vibration noise of the vehicle on bumpy roads.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An airbag vibration suppression structure, characterized in that: An airbag positioning pin (11) is arranged on the steering wheel frame (10), an airbag guide sleeve (9) is arranged on the outer circumference of the airbag positioning pin (11), the airbag guide sleeve (9) is in contact with the steering wheel frame (10), a rebound spring (8) is evenly arranged on the circumferential direction of the airbag guide sleeve (9), one end of the rebound spring (8) is fixedly connected to the airbag guide sleeve (9), the other end of the rebound spring (8) is fixedly connected to a spring base (7), the spring base (7) is located on the outer circumference of the airbag positioning pin (11), a shock absorbing block base (5) is arranged on the outer circumference of the airbag positioning pin (11) and is located above the spring base (7), a shock absorbing block (6) is arranged on the outer circumference of the shock absorbing block base (5), a plastic-coated shell (3) is arranged on the outer circumference of the plastic-coated shell (3), and a shell pressure plate (4) is arranged on the outer side of the plastic-coated shell (3).

2. The airbag noise suppression structure according to claim 1, characterized in that: The airbag guide sleeve (9) comprises an upper clamping plate (901), a sleeve (902), a lower clamping claw (903), a suppression block (904), and a through hole (905). The upper clamping plate (901) is evenly arranged in the circumferential direction of the upper end of the sleeve (902) and is located in the outer circumferential direction of the airbag positioning pin (11). A plurality of lower clamping claws (903) that are engaged with the steering wheel frame (10) are evenly arranged in the circumferential direction of the lower end of the sleeve (902). A through hole (905) that is connected to the airbag positioning pin (11) is processed in the middle of the sleeve (902). The outer circumferential side wall of the sleeve (902) is in contact with the steering wheel frame (10).

3. The airbag noise suppression structure according to claim 2, characterized in that: The steering wheel skeleton (10) is machined with a first skeleton positioning hole (1001), a second skeleton positioning hole (1002), and a third skeleton positioning hole (1003), and three lower clamping claws (903) are evenly arranged in the circumferential direction of the lower end of the sleeve (902) and are respectively clamped with the first skeleton positioning hole (1001), the second skeleton positioning hole (1002), and the third skeleton positioning hole (1003).

4. The airbag noise suppression structure according to claim 3, characterized in that: The first skeleton positioning hole (1001) and the second skeleton positioning hole (1002) are arranged symmetrically to each other, and the third skeleton positioning hole (1003) is located below the first skeleton positioning hole (1001) and the second skeleton positioning hole (1002).

5. The airbag noise suppression structure according to claim 2, characterized in that: The diameter of the upper end surface of the sleeve (902) is greater than the diameter of the lower end surface of the sleeve (902).

6. The airbag noise suppression structure according to claim 2, characterized in that: A plurality of restraining blocks (904) in contact with the steering wheel skeleton (10) are evenly arranged in the outer circumferential direction of the sleeve (902).

7. The airbag noise suppression structure according to claim 6, characterized in that: The interference fit between the suppression block (904) on the outer circumferential side wall of the sleeve (902) and the steering wheel skeleton (10) is 0.2 mm.

8. The airbag rattle suppression structure according to claim 6, characterized in that: The suppression block (904) is in a wave-like sawtooth shape.

9. The airbag rattle suppression structure according to claim 6, characterized in that: The shape of the suppression block (904) is rhombus, rectangle or triangle.

10. The airbag rattle suppression structure according to claim 1, characterized in that: The airbag guide sleeve (9) is connected to the lower contact point (1) of the horn, and the spring base (7) is connected to the upper contact point (2) of the horn via a rebound spring (8).

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