CN112440920B

CN112440920B - Shock attenuation owner drives air bag

Info

Publication number: CN112440920B
Application number: CN201910795713.4A
Authority: CN
Inventors: 杜宇; 朱隽玮
Original assignee: Ningbo Junsheng Automobile Safety System Co ltd
Current assignee: Ningbo Junsheng Automobile Safety System Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2022-11-01
Anticipated expiration: 2039-08-27
Also published as: CN112440920A

Abstract

The invention discloses a damping main driving safety airbag. One specific embodiment of this shock attenuation owner drives air bag includes: the air bag comprises a cover plate, a bag bracket, a shell, an air generator, a horn device, a plurality of metal hooks and a plurality of shock absorption elements; the cover plate is assembled with the shell, and a cavity is formed between the cover plate and the shell; the bag is positioned in the cavity, and the bag bracket is arranged in the bag and assembled with the shell; the inflation inlet of the gas generator is communicated with the bag; the bottom of the shell is provided with a plurality of through holes, and the horn device is provided with a plurality of mounting holes; each metal hook penetrates through one through hole and one mounting hole in the horn device and then is clamped into the steering wheel; a gap is formed between the top end of the metal hook and the capsular bag bracket; the shock-absorbing element is arranged in the through hole. The embodiment utilizes the whole main driving air bag or the main mass part of the main driving air bag as a shock-absorbing mass body, so that the problem that the space of other parts on the steering wheel is compressed due to the addition of a shock absorber can be avoided; and the vibration mass is larger, and the shock absorption effect is more obvious.

Description

Shock attenuation owner drives air bag

Technical Field

The invention relates to the technical field of automobile safety, in particular to a damping main driving safety airbag.

Background

With the increasing demand for comfort in automobiles by consumers, automobile manufacturers have put more research into improving NVH (Noise, vibration and Harshness) of automobiles. At present, because engine vibration can be transmitted to other parts to cause local vibration, most automobiles have the problem that steering wheels vibrate under various working conditions such as idling, high speed and bad roads, and how to reduce the vibration of the steering wheels becomes a hot point of current attention.

The prior art is to add a shock absorber, which is one kind of shock absorber and is composed of an elastic body and a mass block. The shock absorber is added on the vibrating body, and the reaction force generated by the shock absorber when the shock absorber and the vibrating body vibrate together can reduce the vibration of the vibrating body, thereby greatly reducing the system vibration amplitude.

At present, most customers add a shock absorber in a main driving safety airbag, utilize a gas generator as a mass body, or add an additional mass shock absorber on a steering wheel, so that the shock of the steering wheel can be effectively reduced, and the comfort of a driver is improved.

However, the mass dampers and the gas generator dampers have a relatively small vibration mass, cannot completely eliminate the vibration of the steering wheel, and can compress the space of other parts on the steering wheel to increase the product cost, thereby limiting the application.

Disclosure of Invention

In view of this, the embodiment of the present invention provides a shock-absorbing main driving airbag, which can utilize the whole main driving airbag or the main mass part of the main driving airbag as a shock-absorbing mass body without adding an additional shock absorber, so that the problem of compressing the space of other parts on a steering wheel due to the addition of the shock absorber can be avoided, and the shock-absorbing main driving airbag has a simple structure and low cost, and is beneficial to wide application; and the vibration mass is larger, and the shock absorption effect is more obvious.

To achieve the above object, according to an aspect of an embodiment of the present invention, there is provided a shock-absorbing main-driving airbag including: the air bag comprises a cover plate, a bag bracket, a shell, a gas generator, a horn device, a plurality of metal hooks and a plurality of shock absorption elements;

the cover plate is assembled with the shell, and a cavity is formed between the cover plate and the shell; the bag is positioned in the cavity, and the bag bracket is arranged in the bag and assembled with the shell; the inflation inlet of the gas generator is communicated with the bag;

the bottom of the shell is provided with a plurality of through holes, and the horn device is provided with a plurality of mounting holes; each metal hook penetrates through one through hole and one mounting hole in the horn device and then is clamped into the steering wheel; a gap is formed between the top end of the metal hook and the bag bracket; the damping element is arranged in the through hole;

when the function of the loudspeaker is operated, the metal hook is not fixed, the operating force is transmitted to the shell from the cover plate, the shell is transmitted to the damping element, the damping element is transmitted to the loudspeaker device, and the loudspeaker produces sound.

Optionally, the horn device comprises an upper horn support, a lower horn support and a spring; the upper horn bracket is provided with a plurality of upper mounting holes, the lower horn bracket is provided with a plurality of lower mounting holes, and the spring is arranged between the upper horn bracket and the lower horn bracket; the upper mounting surface of the upper horn bracket is abutted with the bottom of the damping element, and the lower mounting surface of the lower horn bracket is abutted with the lower end of the metal hook;

go up and be equipped with a plurality of loudspeaker contacts on the horn bracket and the lower horn bracket, when operating force transmitted damping element, damping element made the contact of the loudspeaker contact on last horn bracket and the lower horn bracket through last horn bracket compression spring, loudspeaker sound production.

Optionally, a groove or a protrusion is arranged on the upper mounting surface of the upper horn bracket, and a matched protrusion or groove is arranged at the bottom of the damping element.

Optionally, a plurality of claws distributed along the lower mounting hole and extending toward the center of the lower mounting hole are arranged on the lower horn bracket, and the diameter of a circle surrounded by the claws is smaller than that of the metal hook.

Optionally, the lower end of the metal hook is provided with an installation groove, and the clamping jaw is arranged in the installation groove; when not operating the loudspeaker function, the outside of jack catch with the lower terminal surface butt of mounting groove, during operation loudspeaker function, the inboard of jack catch with the up end butt of mounting groove.

Optionally, the gap between the lower mounting hole and the metal hook after mounting is 0-0.3 mm.

Optionally, the shock absorbing main ride airbag further comprises: a fixing ring; the outer side of the fixing ring is fixed in the through hole, and the inner side of the fixing ring is assembled with the damping element.

Optionally, the shock absorbing element comprises: an elastic body and a support; the inner side of the supporting piece faces the metal hook, and the elastic body is arranged on the outer side of the supporting piece.

One embodiment of the above invention has the following advantages or benefits: by integrating the cushioning function and the independent horn device on the main driving airbag, the whole main driving airbag or the main mass part of the main driving airbag can be used as a shock-absorbing mass body, and an additional shock absorber is not required to be added, so that the problem that the space of other parts on a steering wheel is compressed due to the addition of the shock absorber can be avoided, the structure is simple, the cost is low, and the wide application is facilitated; and the vibration mass is larger, and the shock absorption effect is more obvious. When the horn function is operated, the metal clamping hook is fixed, so that the horn device can be prevented from being impacted to generate noise, and the commodity of the product is improved.

Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.

Drawings

The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:

FIG. 1 is a schematic view of a shock absorbing main drive airbag of an embodiment of the present invention;

FIG. 2 is an exploded view of a shock absorbing main drive airbag according to an embodiment of the present invention;

FIG. 3 is a schematic view of a main airbag half-assembly of an embodiment of the present invention;

FIG. 4 is a schematic view of a housing assembly of an embodiment of the present invention;

FIG. 5 is a schematic view of a retaining ring according to an embodiment of the present invention;

FIG. 6 is a schematic view of a metal hook according to an embodiment of the present invention;

FIG. 7 is a schematic view of a suspension element of an embodiment of the present invention;

FIG. 8 is a cross-sectional schematic view of a suspension element of an embodiment of the invention;

FIG. 9 is a schematic view of a horn device according to an embodiment of the present invention;

fig. 10 is an exploded view of a horn device according to an embodiment of the present invention;

FIG. 11 is a schematic view of portion A of FIG. 10;

FIG. 12 is a schematic view of portion B of FIG. 10;

FIG. 13 is a schematic view of a shock absorbing main drive airbag without the horn function being operated in some embodiments of the present invention;

FIG. 14 is a schematic view of a shock absorbing main drive airbag with horn function operated according to some embodiments of the present invention;

FIG. 15 is a schematic view of a shock absorbing main drive airbag without the horn function operated in accordance with further embodiments of the present invention.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

FIG. 1 is a schematic view of a shock absorbing main ride airbag according to an embodiment of the present invention. The damping main driving safety airbag is integrated with a damping function and an independent horn mechanism, is used for a main driving steering wheel of a vehicle, and can effectively reduce the vibration of the steering wheel.

Fig. 2 is an exploded view of a shock-absorbing main-ride airbag according to an embodiment of the present invention, and as shown in fig. 2, the shock-absorbing main-ride airbag 100 includes: cover plate 1, bag 2, bag holder 3, housing 5, gas generator 7, speaker device 9, and a plurality of metal hooks 4 and a plurality of shock absorbing elements 6. The part of the damping main driving airbag except the horn device 9 is called a main driving airbag semi-assembly, and the part of the main driving airbag semi-assembly except the metal clamping hook 4 and the damping element 6 is called a shell assembly. Fig. 3 is a schematic view of a main airbag half assembly of an embodiment of the present invention, and fig. 4 is a schematic view of a housing assembly of an embodiment of the present invention.

In this example, the cover plate 1 is assembled with the housing 5, forming a cavity therebetween; the bag 2 is positioned in the cavity, and the bag bracket 3 is arranged in the bag 2 and assembled with the shell 5; the inflation port of the gas generator 7 is connected to the bladder 2, and the position of the gas generator 7 may be fixed at the center of the housing 5 as shown in fig. 3, or may be fixed at other positions according to actual conditions, such as in a cavity formed between the housing 5 and the cover 1, or at the side of the housing 5 facing the steering wheel. The bottom of the shell 5 is provided with a plurality of through holes 5-1, and the horn device 9 is provided with a plurality of mounting holes, generally speaking, the number of the through holes 5-1 and the number of the mounting holes are the same as the number of the metal hooks 4.

Each metal hook 4 penetrates through one through hole 5-1 and one mounting hole on the horn device 9 and then is clamped on the steering wheel, and the mounting surface of the mounting hole on the steering wheel matched with the safety air bag is attached to the outer side part of the bottom of the horn device or has a small gap. When the speaker is not operated, there is a gap between the top of the metal hook 4 and the bag holder 3, and the gap is larger than the actuation distance of the speaker device 9. Because the metal hook 4 is stationary after installation, the gap may not sound the horn if it is too small. The shock-absorbing member 6 is disposed in the through-hole 5-1. When the horn function is operated, the metal hook 4 is not moved, the operation force is transmitted from the cover plate 1 to the shell 5, the shell 5 is transmitted to the shock absorption element 6, the shock absorption element 6 is transmitted to the horn device 9, and the horn produces sound.

By integrating the cushioning function and the independent horn device on the main driving airbag, the whole main driving airbag or the main mass part of the main driving airbag can be used as a shock-absorbing mass body, the shock of the steering wheel is transmitted to the airbag semi-assembly through the shock-absorbing element, the shock amplitude of the steering wheel is weakened by the self shock, and no extra shock absorber is needed to be added, so that the problem that the space of other parts on the steering wheel is compressed due to the addition of the shock absorber can be avoided, the structure is simple, the cost is low, and the wide application is facilitated; and the vibration mass is larger, and the shock absorption effect is more obvious. When the horn function is operated, the metal hook is fixed, so that the horn device can be prevented from being impacted to generate noise, and the commodity of the product is improved.

The horn device is an independent structure, can generate sound corresponding to the operation force transmitted to the horn device, does not need to be interacted with other parts in the air bag, and is simple in structure and convenient to detach and mount. In an alternative embodiment shown in fig. 10, the horn device 9 includes an upper horn support 9-1, a lower horn support 9-2, and a spring 9-3, and the spring 9-3 is disposed between the upper horn support 9-1 and the lower horn support 9-2. In fig. 10, the DAB side refers to the side facing the pocket. The upper horn bracket 9-1 is provided with a plurality of upper mounting holes 9-1-1, as shown in fig. 11. The lower horn bracket 9-2 is provided with a plurality of lower mounting holes 9-2-1, as shown in fig. 12. Generally, the number of the upper mounting holes 9-1-1 and the lower mounting holes 9-2-1 is the same as the number of the metal hooks 4. The upper mounting surface of the upper horn bracket 9-1 is abutted against the bottom of the damping element 6, and the lower mounting surface of the lower horn bracket 9-2 is abutted against the lower end of the metal hook 4, so that the horn device 9 is not in direct contact with the shell 5. The upper horn support 9-1 and the lower horn support 9-2 are provided with a plurality of horn contacts 9-4, and the horn device 9 can form a current loop when actuated. When the operation force is transmitted to the shock-absorbing element 6, the shock-absorbing element 6 compresses the spring 9-3 through the upper horn support 9-1, so that the horn contacts 9-4 on the upper horn support 9-1 and the lower horn support 9-2 are contacted, and the horn sounds. It should be noted that, when the horn is not operated, the bag holder 3 and the metal hook 4 maintain a gap which is larger than the minimum distance between the upper and lower horn holders (the actuation distance of the horn unit 9).

In an alternative embodiment shown in fig. 11, the upper horn support 9-1 is provided with a recess or projection 9-1-2 on the upper mounting surface and the bottom of the shock absorbing member 6 is provided with a mating projection or recess. Therefore, on one hand, the compactness of the structure can be ensured, and the volume of the air bag is reduced; on the other hand, the stability of the structure can be ensured, so that the operation force for operating the horn function is transmitted to the upper horn bracket 9-1, and the sensitivity of the horn function is improved.

In an alternative embodiment shown in fig. 12, the lower horn bracket 9-2 is provided with a plurality of claws 9-2-2 distributed along the lower mounting hole 9-2-1 and extending towards the center of the lower mounting hole 9-2-1, and the diameter of the circle surrounded by the claws 9-2-2 is smaller than that of the metal hook 4. When the horn device 9 is installed, the metal hook 4 passes through the upper installation hole 9-1-1 on the upper horn support and the lower installation hole 9-2-1 on the lower horn support 9-2, the claw 9-2-2 at the bottom of the lower horn support 9-2 is elastically deformed by applying force and passes through the lower horn support 9-2 until the claw 9-2-2 at the bottom of the lower horn support 9-2 is arranged in the installation groove 4-1 of the metal hook 4. So can guarantee the stability of connecting between 9 surplus metal trip 4 of horn device.

In the alternative embodiment shown in fig. 6, the lower end of the metal hook 4 is provided with an installation groove 4-1, and the claw 9-2-2 on the lower horn bracket 9-2 is arranged in the installation groove 4-1. Fig. 13 is a schematic view of a shock-absorbing main drive airbag in some embodiments of the present invention, in which the horn function is not operated, and as shown in fig. 13, the outer side of the claw 9-2-2 abuts against the lower end surface of the mounting groove 4-1 in the non-operated horn function. Fig. 14 is a schematic view of a shock-absorbing main ride airbag according to some embodiments of the present invention, in which the horn function is operated, as shown in fig. 14, the inner sides of the claws 9-2-2 abut against the upper end surface of the mounting groove 4-1.

The mounting hole 9-1-1 of the upper horn bracket 9-1 is larger than the diameter of the metal hook 4, so that the metal hook 4 can freely pass through. The mounting hole 9-2-1 of the lower horn bracket 9-2 and the metal hook 4 can be attached or have a gap after being mounted, for example, the gap between the lower mounting hole 9-2-1 and the metal hook 4 after being mounted is 0-0.3 mm.

The shock-absorbing main driving airbag of the present invention may further include: and a fixing ring 5-2. As shown in FIG. 3, the outer side of the fixing ring 5-2 is fixed in the through hole 5-1, for example, the outer side of the fixing ring 5-2 is fixed with the housing 5 by clamping or plastic coating. The fixing ring 5-2 is assembled with the damping member 6 inside. The fixing ring 5-2 is arranged to fix the metal clamping hook 4 conveniently. The fixing ring 5-2 may be in contact with the outside of the housing 5 as shown in fig. 13, or may not be in contact with the outside of the housing 5 as shown in fig. 15.

In the embodiment shown in fig. 8, the shock-absorbing element 6 comprises: an elastic body 6-1 and a support 6-2; the inner side of the supporting part 6-2 faces the metal hook 4, and the elastic body 6-1 is arranged on the outer side of the supporting part 6-2. The elastic body 6-1 and the supporting member 6-2 may be two separate parts or may be integrally molded as one part. The support member 6-2 is not or only slightly elastic. In this example, the elastic body 6-1 is disposed outside the support member 6-2, which can reduce the volume of the shock absorbing element, and thus the volume of the entire airbag.

According to the technical scheme of the embodiment of the invention, the whole main driving air bag or the main mass part of the main driving air bag can be used as a shock-absorbing mass body, and an additional shock absorber is not required to be added, so that the problem that the space of other parts on a steering wheel is compressed due to the addition of the shock absorber can be avoided, and the steering wheel has the advantages of simple structure, low cost and high commodity, and is beneficial to wide application; and the vibration mass is larger, and the shock absorption effect is more obvious.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock-absorbing main-driving airbag is characterized by comprising: the device comprises a cover plate (1), a bag (2), a bag bracket (3), a shell (5), a gas generator (7), a horn device (9), a plurality of metal clamping hooks (4) and a plurality of shock absorption elements (6);

the cover plate (1) is assembled with the shell (5), and a cavity is formed between the cover plate and the shell; the bag (2) is positioned in the cavity, and the bag bracket (3) is arranged in the bag (2) and assembled with the shell (5); the inflation inlet of the gas generator (7) is communicated with the bag (2);

the bottom of the shell (5) is provided with a plurality of through holes (5-1), and the horn device (9) is provided with a plurality of mounting holes; each metal hook (4) penetrates through one through hole (5-1) and one mounting hole in the horn device (9) and then is clamped into the steering wheel; a gap exists between the top end of the metal hook (4) and the bag bracket (3), and the gap is larger than the actuating distance of the horn device (9); the damping element (6) is arranged in the through hole (5-1);

when the loudspeaker function is operated, the metal hook (4) is not moved, the operating force is transmitted to the shell (5) from the cover plate (1), the shell (5) is transmitted to the damping element (6), the damping element (6) is transmitted to the loudspeaker device (9), and the loudspeaker produces sound.

2. A shock absorbing main ride airbag according to claim 1, wherein the horn device (9) comprises an upper horn support (9-1), a lower horn support (9-2) and a spring (9-3); a plurality of upper mounting holes (9-1-1) are formed in the upper horn support (9-1), a plurality of lower mounting holes (9-2-1) are formed in the lower horn support (9-2), and the spring (9-3) is arranged between the upper horn support (9-1) and the lower horn support (9-2); the upper mounting surface of the upper horn bracket (9-1) is abutted against the bottom of the damping element (6), and the lower mounting surface of the lower horn bracket (9-2) is abutted against the lower end of the metal hook (4);

a plurality of horn contacts (9-4) are arranged on the upper horn support (9-1) and the lower horn support (9-2), when an operating force is transmitted to the damping element (6), the damping element (6) compresses the spring (9-3) through the upper horn support (9-1), so that the horn contacts (9-4) on the upper horn support (9-1) and the lower horn support (9-2) are contacted, and the horn sounds.

3. A shock absorbing primary ride airbag according to claim 2 wherein the upper horn support (9-1) has a recess or protrusion (9-1-2) on the mounting surface and the bottom of the shock absorbing element (6) has a mating protrusion or recess.

4. A shock-absorbing main ride airbag according to claim 2, wherein the lower horn bracket (9-2) is provided with a plurality of claws (9-2-2) distributed along the lower mounting hole (9-2-1) and extending toward the center of the lower mounting hole (9-2-1), and the diameter of the circle surrounded by the plurality of claws (9-2-2) is smaller than the diameter of the metal hook (4).

5. The shock-absorbing main ride airbag according to claim 4, wherein the lower end of the metal hook (4) is provided with an installation groove (4-1), and the claw (9-2-2) is arranged in the installation groove (4-1); when the horn function is not operated, the outer side of the clamping jaw (9-2-2) is abutted against the lower end face of the mounting groove (4-1), and when the horn function is operated, the inner side of the clamping jaw (9-2-2) is abutted against the upper end face of the mounting groove (4-1).

6. A shock-absorbing main ride airbag according to claim 2, wherein the gap between the lower mounting hole (9-2-1) and the metal hook (4) is 0 to 0.3mm after mounting.

7. The shock absorbing main ride airbag of claim 1, further comprising: a fixed ring (5-2); the outer side of the fixing ring (5-2) is fixed in the through hole (5-1), and the inner side is assembled with the damping element (6).

8. A shock absorbing main ride airbag according to claim 1, wherein the shock absorbing element (6) comprises: an elastic body (6-1) and a support member (6-2); the inner side of the supporting piece (6-2) faces the metal hook (4), and the elastic body (6-1) is arranged on the outer side of the supporting piece (6-2).