阅读说明：本技术 一种安全气囊模块减振安装结构 (Air bag module damping mounting structure ) 是由 佟鑫 徐印 周云鹏 于 2021-09-02 设计创作，主要内容包括：一种安全气囊模块减振安装结构,包括方向盘骨架和气囊模块,在气囊模块的金属托板上设有三个定位组件,定位组件分别穿过方向盘骨架上的安装孔并通过卡簧卡接；所述定位组件包括定位销,在定位销下端设有与卡簧配合的环形卡槽,在定位销上由上至下依次套设有减振套、喇叭底座、按压弹簧和导向套,在导向套下端对称设有弹性卡爪并卡入定位销下部的环形凹槽内；在导向套内壁预埋有U型喇叭簧片,喇叭簧片两侧上端由导向套顶面露出；在喇叭底座外缘对称设有二个卡勾,并卡入到导向套底部的卡口内；在金属托板上对应每个喇叭簧片的两侧上端位置分别设有铜触点。该结构能够提高减振效果,简化喇叭结构,满足客户按压手感要求并减小触点接触异响。(A vibration damping mounting structure of an airbag module comprises a steering wheel framework and the airbag module, wherein three positioning assemblies are arranged on a metal supporting plate of the airbag module, and the positioning assemblies respectively penetrate through mounting holes in the steering wheel framework and are clamped through clamp springs; the positioning assembly comprises a positioning pin, an annular clamping groove matched with the clamp spring is formed in the lower end of the positioning pin, a damping sleeve, a horn base, a pressing spring and a guide sleeve are sequentially sleeved on the positioning pin from top to bottom, and elastic clamping claws are symmetrically arranged at the lower end of the guide sleeve and clamped into an annular groove in the lower portion of the positioning pin; u-shaped horn reeds are embedded in the inner wall of the guide sleeve, and the upper ends of the two sides of each horn reed are exposed out of the top surface of the guide sleeve; two clamping hooks are symmetrically arranged on the outer edge of the horn base and clamped into the clamping openings at the bottom of the guide sleeve; copper contacts are respectively arranged on the metal supporting plate corresponding to the upper ends of the two sides of each horn reed. This structure can improve the damping effect, simplifies the loudspeaker structure, satisfies the customer and presses the requirement of feeling and reduce the contact abnormal sound.)

1. A vibration damping mounting structure of an airbag module comprises a steering wheel framework and the airbag module, wherein three positioning assemblies are arranged on a metal supporting plate of the airbag module, and the positioning assemblies respectively penetrate through corresponding mounting holes in the steering wheel framework and are clamped through clamp springs; the method is characterized in that:

the positioning assembly comprises a positioning pin, the positioning pin penetrates through the metal supporting plate from top to bottom and is limited by the big end at the upper end of the metal supporting plate, an annular clamping groove matched with the clamp spring is formed in the lower end of the positioning pin, a damping sleeve, a horn base, a pressing spring and a guide sleeve are sequentially sleeved on the positioning pin from top to bottom, two elastic clamping claws are symmetrically arranged at the lower end of the guide sleeve and are clamped into an annular groove formed in the lower portion of the positioning pin; a U-shaped horn reed is embedded in the inner wall of the guide sleeve, the lower end of the horn reed is tightly attached to the outer edge of the positioning pin, and the upper ends of two sides of the horn reed are exposed out of the top surface of the guide sleeve and used as a cathode contact of the horn;

the horn base and the pressing spring are embedded into the guide sleeve, two clamping hooks are symmetrically arranged at the lower end of the outer edge of the horn base and clamped into corresponding clamping openings at the bottom of the guide sleeve; the device is used for realizing Z-direction limiting of the loudspeaker stroke and ensuring that the loudspeaker stroke meets the design requirement; the vibration damping sleeve is embedded into and clamped in the jack of the corresponding positioning pin of the metal supporting plate and is used for improving the vibration damping effect;

copper contacts are riveted at the upper ends of the two sides of each horn reed on the metal supporting plate respectively and are used as the anode contacts of the horn.

2. The airbag module vibration damping mounting structure as set forth in claim 1, wherein: the inner hole of the damping sleeve is provided with a buckle which is connected with the damping sleeve into a whole, the buckle is sleeved on the locating pin through clearance fit, and the lower end of the outer edge of the buckle is symmetrically provided with two clamping jaws which are clamped in the horn base; the positioning device is used for realizing circumferential positioning of the guide sleeve and ensuring that the horn reed arranged in the guide sleeve corresponds to the copper contact position on the metal supporting plate.

3. The airbag module vibration damping mounting structure as set forth in claim 2, wherein: a protective sleeve is sleeved in the annular groove in the middle of the outer edge of the vibration damping sleeve, a plurality of elastic clamping claws are uniformly distributed on the outer edge of the protective sleeve, and the vibration damping sleeve is embedded in and clamped in the jack of the corresponding positioning pin of the metal supporting plate through the protective sleeve so as to prevent the metal supporting plate from directly contacting with the vibration damping sleeve; positioning planes which are mutually inserted and matched are symmetrically arranged between the upper end of the outer edge of the damping sleeve and the protective sleeve and are used for realizing circumferential positioning of the damping sleeve.

4. An airbag module vibration damping mounting structure according to claim 1 or 2, wherein: two positioning bosses are symmetrically arranged in the horn base, and the upper end of the pressing spring is sleeved on the positioning bosses and is screwed in to clamp and limit the horn base through spiral clamping teeth arranged at the outer edges of the positioning bosses.

5. An airbag module vibration damping mounting structure according to any one of claims 1 to 3, wherein: the damping cover is silica gel or rubber material, the buckle is plastics material and vulcanizes integratively with the damping cover.

6. The airbag module vibration damping mounting structure as set forth in claim 1, wherein: the bayonet socket clearance of trip both sides and uide bushing bottom is 0.1mm to realize the spline locate function of loudspeaker base and uide bushing.

7. An airbag module vibration damping mounting structure according to claim 1 or 6, wherein: the outer edge of the guide sleeve is in a step shape, two rectangular openings are symmetrically formed in the lower end of the guide sleeve, the outer diameter of the guide sleeve is in clearance fit with a corresponding mounting hole in a steering wheel framework, and the elastic clamping jaws are respectively arranged in the middles of the rectangular openings; to achieve X, Y-directional positioning of the airbag module.

8. The airbag module vibration damping mounting structure as set forth in claim 7, wherein: rectangular bosses are symmetrically arranged on two sides of the outer edge of the upper part of the guide sleeve so as to facilitate the embedding of the horn reed.

9. The airbag module vibration damping mounting structure as set forth in claim 7, wherein: the claw part of the elastic claw is in a right-angled triangle shape so as to be convenient to mount.

10. The airbag module vibration damping mounting structure as set forth in claim 1, wherein: be located every locating component both sides at steering wheel skeleton bottom surface and be equipped with spacing draw-in groove and spacing boss respectively, the jump ring is the unequal U shaped steel silk in both sides and middle part card in spacing draw-in groove, and the minor face card of jump ring is on spacing boss, and the long limit card of jump ring is in the ring groove of locating pin lower extreme.

Technical Field

The invention relates to the field of automobile safety airbags, in particular to a vibration reduction mounting structure of an air bag module.

Background

The existing automobile steering wheel is elastically connected with an air bag module through a spring, so that the vibration damping effect is not obvious, the vibration damping structure cannot be directly expanded, and the air bag often shakes seriously to cause discomfort and complaints of a user; to the steering wheel vibration abnormal sound problem, only can reduce the relative motion of steering wheel and gasbag module through the mode of increase spring rate, but this kind of mode can influence the loudspeaker pressing force of steering wheel and feel, need just can press the loudspeaker switch with very big power, has also increased the sound of loudspeaker contact resilience abnormal sound simultaneously.

Meanwhile, the horn function of the traditional airbag is realized by a shared structure of an airbag module and a steering wheel, so that the requirement on installation precision is high, and the stability and the reliability are poor; even if an independent horn structure is arranged on the airbag module, the structure is complex, and a plurality of wire harnesses are required to be added for connection so as to realize the horn function.

Disclosure of Invention

The invention aims to provide a vibration reduction mounting structure of an airbag module, which can improve the vibration reduction effect, simplify the horn structure, meet the requirement of a user on pressing hand feeling and reduce contact abnormal sound.

The technical scheme of the invention is as follows:

a vibration damping mounting structure of an airbag module comprises a steering wheel framework and the airbag module, wherein three positioning assemblies are arranged on a metal supporting plate of the airbag module, and the positioning assemblies respectively penetrate through corresponding mounting holes in the steering wheel framework and are clamped through clamp springs; it is characterized in that:

the positioning assembly comprises a positioning pin, the positioning pin penetrates through the metal supporting plate from top to bottom and is limited by the big end at the upper end of the metal supporting plate, an annular clamping groove matched with the clamp spring is formed in the lower end of the positioning pin, a damping sleeve, a horn base, a pressing spring and a guide sleeve are sequentially sleeved on the positioning pin from top to bottom, two elastic clamping claws are symmetrically arranged at the lower end of the guide sleeve and are clamped into an annular groove formed in the lower portion of the positioning pin; a U-shaped horn reed is embedded in the inner wall of the guide sleeve, the lower end of the horn reed is tightly attached to the outer edge of the positioning pin, and the upper ends of two sides of the horn reed are exposed out of the top surface of the guide sleeve and used as a cathode contact of the horn;

the horn base and the pressing spring are embedded into the guide sleeve, two clamping hooks are symmetrically arranged at the lower end of the outer edge of the horn base and clamped into corresponding clamping openings at the bottom of the guide sleeve; the device is used for realizing Z-direction limiting of the loudspeaker stroke and ensuring that the loudspeaker stroke meets the design requirement; the vibration damping sleeve is embedded into and clamped in the jack of the corresponding positioning pin of the metal supporting plate and is used for improving the vibration damping effect;

copper contacts are riveted at the upper ends of the two sides of each horn reed on the metal supporting plate respectively and are used as the anode contacts of the horn.

Preferably, the inner hole of the damping sleeve is provided with a buckle which is connected with the damping sleeve into a whole, the buckle is sleeved on the locating pin through clearance fit, and the lower end of the outer edge of the buckle is symmetrically provided with two clamping jaws which are clamped in the horn base; the positioning device is used for realizing circumferential positioning of the guide sleeve and ensuring that the horn reed arranged in the guide sleeve corresponds to the copper contact position on the metal supporting plate, thereby ensuring that the horn is pressed and contacted stably.

Preferably, a protective sleeve is sleeved in the annular groove in the middle of the outer edge of the vibration damping sleeve, a plurality of elastic clamping claws are uniformly distributed on the outer edge of the protective sleeve, and the vibration damping sleeve is embedded and clamped in the jack of the corresponding positioning pin of the metal supporting plate through the protective sleeve so as to prevent the metal supporting plate from directly contacting with the vibration damping sleeve; positioning planes which are mutually inserted and matched are symmetrically arranged between the upper end of the outer edge of the damping sleeve and the protective sleeve and are used for realizing circumferential positioning of the damping sleeve.

Preferably, the horn base is symmetrically provided with two positioning bosses, and the upper end of the pressing spring is sleeved on the positioning bosses and is screwed in to clamp and limit the position through spiral clamping teeth arranged on the outer edges of the positioning bosses.

Preferably, the damping sleeve is made of silica gel or rubber, and the buckle is made of plastic and is vulcanized with the damping sleeve into a whole.

Preferably, the gap between the two sides of the clamping hook and the bayonet at the bottom of the guide sleeve is 0.1mm, so that the rotation stopping and positioning functions of the horn base and the guide sleeve are realized.

Preferably, the outer edge of the guide sleeve is in a step shape, the lower end of the guide sleeve is symmetrically provided with two rectangular notches, the outer diameter of the guide sleeve is in clearance fit with the corresponding mounting hole on the steering wheel framework, and the elastic clamping jaws are respectively arranged in the middles of the rectangular notches; to achieve X, Y-directional positioning of the airbag module.

Preferably, rectangular bosses are symmetrically arranged on two sides of the outer edge of the upper part of the guide sleeve so as to facilitate embedding of the horn reed.

Preferably, the claw part of the elastic claw is in a right-angled triangle shape for easy installation.

As further preferred, be located every locating component both sides at steering wheel skeleton bottom surface and be equipped with spacing draw-in groove and spacing boss respectively, the jump ring is the unequal U shaped steel silk in both sides and middle part card in spacing draw-in groove, and the minor face card of jump ring is on spacing boss, and the long limit card of jump ring is in the ring groove of locating pin lower extreme.

Preferably, the protective sleeve is made of plastic.

The invention has the beneficial effects that:

1. the positioning assembly comprises a positioning pin, the positioning pin penetrates through the metal supporting plate from top to bottom and is limited by the big end at the upper end of the metal supporting plate, an annular clamping groove matched with the clamp spring is formed in the lower end of the positioning pin, a damping sleeve, a horn base, a pressing spring and a guide sleeve are sequentially sleeved on the positioning pin from top to bottom, two elastic clamping claws are symmetrically arranged at the lower end of the guide sleeve and are clamped in an annular groove formed in the lower portion of the positioning pin; damping cover embedding and card are in the jack that metal support plate corresponds the locating pin, can make whole gasbag module as the damping piece through the cooperation of pressing spring and damping cover, and the increase of contrast tradition damping mechanism weight can improve the damping effect, satisfies the customer and presses the requirement of feeling.

2. The lower end of the positioning pin is clamped on the steering wheel framework through the clamp spring, the U-shaped horn reed is embedded in the inner wall of the guide sleeve, the lower end of the horn reed is tightly attached to the outer edge of the positioning pin, and the upper ends of two sides of the horn reed are exposed out of the top surface of the guide sleeve and used as a horn negative electrode contact; therefore, the inserting sheet is led out through the steering wheel framework, and the cathode function of the loudspeaker can be integrally realized; because the metal supporting plate is arranged on the positioning pins of the three positioning components in a floating mode through the loudspeaker base and the elastic support of the pressing spring, copper contacts are riveted at the positions, corresponding to the upper ends of two sides of each loudspeaker reed, on the metal supporting plate respectively and are used as loudspeaker positive contacts; the metal supporting plate is led out of the inserting sheet to be connected with a loudspeaker wire harness, so that the positive electrode function of the loudspeaker can be integrally realized, the mounting structure can simplify the loudspeaker structure and the steering wheel structure, and the cost is reduced; through pressing the gasbag module, make copper contact and the contact of the loudspeaker reed that corresponds, alright realize the loudspeaker function, can reduce the contact abnormal sound.

3. The horn base and the pressing spring are embedded into the guide sleeve, and the lower end of the outer edge of the horn base is symmetrically provided with two clamping hooks which are clamped into corresponding clamping openings at the bottom of the guide sleeve; therefore, the Z-direction limit of the loudspeaker stroke can be realized, the loudspeaker stroke is guaranteed to meet the design requirement, and the loudspeaker is ensured to work stably.

4. The vibration reduction mounting structure of the safety airbag module not only realizes the mounting of the airbag module, but also realizes the pressing and conducting functions of the horn contact, structurally reduces the problem of abnormal sound caused by the contact of the horn contact, and increases the interconversion between the Damper function and the non-Damper function; parts such as the loudspeaker subassembly, locating pin, damping cover, jump ring all adopt standard component, can realize that the part is standardized and structural platform ization.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a partial sectional view B-B of fig. 1.

Fig. 4 is a partial rear view of fig. 1.

Fig. 5 is a partially enlarged view of fig. 2.

Fig. 6 is a partially enlarged view of fig. 3.

Fig. 7 is a schematic structural view of the guide sleeve.

Fig. 8 is a schematic structural view of the horn base.

Figure 9 is a schematic view of a protective sheath.

In the figure: the device comprises a steering wheel framework 1, a horn base 2, a pressing spring 3, a guide sleeve 4, a positioning pin 5, a horn reed 6, a plug-in sheet 7, a copper contact 8, a damping sleeve 9, an airbag module 10, a buckle 11, a protective sleeve 12, a metal supporting plate 13 and a clamp spring 14; the clamping device comprises a mounting hole 101, a clamping hook 201, a positioning boss 202, a spiral clamping tooth 203, an arc-shaped clamping groove 204, an elastic clamping claw 401, a rectangular opening 402, a rectangular boss 403, an annular groove 501, an elastic clamping claw 1201 and a positioning plane 1202.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 9, the airbag module vibration damping mounting structure according to the present invention includes a steering wheel frame 1 and an airbag module 10, three positioning assemblies are disposed on a metal supporting plate 13 of the airbag module 10, and the positioning assemblies respectively pass through corresponding stepped mounting holes 101 on the steering wheel frame 1 and are clamped by a clamp spring 14.

The positioning assembly comprises a positioning pin 5, the positioning pin 5 penetrates through the metal supporting plate 13 from top to bottom and is clamped in the metal supporting plate 13 through the large end at the upper end of the positioning pin 5, the lower end of the positioning pin 5 is provided with an annular clamping groove matched with the clamp spring 14, the positioning pin 5 is sequentially sleeved with a damping sleeve 9, a horn base 2, a pressing spring 3 and a guide sleeve 4 from top to bottom, the lower end of the guide sleeve 4 is symmetrically provided with two elastic clamping claws 401 and is clamped in an annular groove 501 arranged at the lower part of the positioning pin 5, so that the positioning pin 5, the guide sleeve 4 and the clamp spring 14 are respectively clamped without relative movement; the claw part of the elastic claw 401 is in a right triangle shape so as to facilitate installation. U-shaped horn reeds 6 are embedded in the inner wall of the guide sleeve 4, the lower ends of the horn reeds 6 are tightly attached to the outer edge of the positioning pin 5, and the upper ends of the two sides of each horn reed 6 are exposed out of the top surface of the guide sleeve 4 and used as a horn negative contact.

The outer edge of the guide sleeve 4 is in a step shape, the lower end of the guide sleeve is symmetrically provided with two rectangular notches 402, the outer diameter of the guide sleeve is in clearance fit with the corresponding mounting hole 101 on the steering wheel framework 1, and the elastic clamping jaws 401 are respectively arranged in the middle of the rectangular notches 402; to achieve the X, Y-oriented positioning of the airbag module 10. Two rectangular bosses 403 are symmetrically arranged on two sides of the outer edge of the upper part of the guide sleeve 4 so as to pre-embed the horn reed 6.

The horn base 2 and the pressing spring 3 are embedded into the guide sleeve 4, two elastic clamping hooks 201 are symmetrically arranged at the lower end of the outer edge of the horn base 2 and clamped into corresponding bayonets at the bottom of the guide sleeve 4; the device is used for realizing Z-direction limiting of the loudspeaker stroke and ensuring that the loudspeaker stroke meets the design requirement; the bayonet socket clearance of trip 201 both sides and uide bushing 4 bottom is 0.1mm to realize loudspeaker base 2 and uide bushing 4's spline locate function. Two positioning bosses 202 are symmetrically arranged in the horn base 2, and the upper end of the pressing spring 3 is sleeved on the positioning bosses 202 and is screwed in for clamping and limiting through spiral clamping teeth 203 arranged at the outer edges of the positioning bosses; the lower end of the pressing spring 3 is sleeved on a spigot at the center inside the guide sleeve 4.

The damping sleeve 9 is embedded and clamped in the jack of the metal supporting plate 13 corresponding to the positioning pin 5, and is used for improving the damping effect; the inner hole of the damping sleeve 9 is provided with a buckle 11 which is connected with the damping sleeve 9 into a whole, the buckle 11 is sleeved on the positioning pin 5 through clearance fit, and the lower end of the outer edge of the buckle 11 is symmetrically provided with two clamping jaws 1101 and clamped in arc-shaped clamping grooves 204 arranged at two sides in the central hole of the horn base 2 through clearance fit; the positioning device is used for realizing circumferential positioning of the guide sleeve 4 and ensuring that the horn reed 6 arranged in the guide sleeve 4 corresponds to the copper contact 8 on the metal supporting plate 13, so that the horn is ensured to be pressed and contacted stably.

A protective sleeve 12 is sleeved in a ring groove in the middle of the outer edge of the vibration damping sleeve 9, a plurality of elastic clamping claws 1201 are uniformly distributed on the outer edge of the protective sleeve 12, and the vibration damping sleeve 9 is embedded in and clamped in a jack of the metal supporting plate 13 corresponding to the positioning pin 5 through the protective sleeve 12 so as to prevent the metal supporting plate 13 from directly contacting with the vibration damping sleeve 9; positioning planes 1202 which are mutually inserted and matched are symmetrically arranged between the upper end of the outer edge of the damping sleeve 9 and the protective sleeve 12 and are used for realizing circumferential positioning of the damping sleeve 9.

Damping cover 9 is silica gel or rubber material, buckle 11 is the plastics material and fuses integratively with damping cover 9. The protective sleeve 12 is made of plastic.

Copper contacts 8 are riveted on the metal supporting plate 13 corresponding to the upper ends of the two sides of each horn reed 6 respectively and are used as horn positive contacts. The metal supporting plate 13 is led out to connect the inserting piece 7, so that the positive function of the loudspeaker can be integrally realized.

A limiting clamping groove 102 and a limiting boss 103 which are connected with the steering wheel framework 1 into a whole are respectively arranged on two sides of each positioning component on the bottom surface of the steering wheel framework 1, the clamping springs 14 are U-shaped steel wires with two unequal sides, the joints of the middle parts of the clamping springs are clamped in the limiting clamping grooves 102, the short edges of the clamping springs 14 are clamped on the limiting bosses 103, and the long edges of the clamping springs 14 are clamped in annular clamping grooves at the lower ends of the positioning pins 5; the positioning device is used for realizing Z-direction positioning and detonation drop prevention of the air bag module 10. Because the loudspeaker reed 6 is in clamping contact with the clamp spring 14 and the steering wheel framework 1 through the positioning pin 5, the inserting piece is led out through the steering wheel framework 1, and the cathode function of the loudspeaker can be integrally realized.

When the air bag module 10 is used, the metal supporting plate 13 of the air bag module 10 is respectively arranged on the steering wheel framework 1 through the three positioning components by using the snap springs 14, and the metal supporting plate 13 is elastically supported and floatingly arranged on the positioning pins 5 of the three positioning components through the horn base 2 and the pressing spring 3, so that the metal supporting plate 13 of the air bag module 10 is in a floating state on the positioning pins 5 of the three positioning components; not only can improve the damping effect, drive the press motion of metal layer board 13 through gasbag module 10 moreover, make the copper contact 8 of metal layer board 13 and the contact of the loudspeaker reed 6 upper end that corresponds, alright realize loudspeaker function.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.