JP2013082283A - Mounting part structure for airbag device - Google Patents

Mounting part structure for airbag device Download PDF

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Publication number
JP2013082283A
JP2013082283A JP2011222691A JP2011222691A JP2013082283A JP 2013082283 A JP2013082283 A JP 2013082283A JP 2011222691 A JP2011222691 A JP 2011222691A JP 2011222691 A JP2011222691 A JP 2011222691A JP 2013082283 A JP2013082283 A JP 2013082283A
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Prior art keywords
mounting
attachment
locking
airbag
trunk
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JP2011222691A
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JP5872237B2 (en
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Hidetaka Azuma
英孝 東
Nobuhiko Yoshii
暢彦 吉井
Keita Yamauchi
景太 山内
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Ashimori Industry Co Ltd
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Ashimori Industry Co Ltd
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Priority to JP2011222691A priority Critical patent/JP5872237B2/en
Priority to PCT/JP2012/074342 priority patent/WO2013051410A1/en
Publication of JP2013082283A publication Critical patent/JP2013082283A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B60R21/2035Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
    • B60R21/2037Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

PROBLEM TO BE SOLVED: To facilitate the work of inserting a mounting member into a mounting hole on a counter part side.SOLUTION: A mounting part structure for an airbag device includes a center member as an example of a first affixation member provided to a steering wheel side, and the airbag device having a mounting plate as an example of a second affixation member. The mounting member 22 is provided on one of the center member and the mounting plate in a protruding manner, and the mounting hole and an engagement body are provided on the other. The mounting member 22 has a column 23 and an engagement protrusion 24 formed with the column 23. A coiled spring 25 which is disposed in a compressed state between the center member 16 and the mounting plate is fitted over the mounting member 22. The coiled spring 25 has a barrel part 26 which can be fitted over the column 23, and an engagement end part 27 which is provided on the front end side of the barrel part 26 and which can be engaged with the engagement protrusion 24 from the base end side of the mounting member 22.

Description

この発明は、エアバッグ装置をステアリングホイールに取付ける技術に関する。   The present invention relates to a technique for attaching an airbag device to a steering wheel.

従来、エアバッグ装置をステアリングホイールに取付ける構成として、特許文献1に開示のものがある。   Conventionally, as a configuration for attaching an airbag device to a steering wheel, there is one disclosed in Patent Document 1.

特許文献1では、ベースプレートにピンが設けられると共に、スポーク側芯金に設けられた取付部にはガイド孔が形成されている。そして、ピンが取付部のガイド孔に挿入されると、取付部に嵌め込まれたスイッチワイヤがピンに係止するようになっている。また、ピンにはコイルバネが設けられており、ピンをガイド孔に挿入した状態で、コイルバネがベースプレートと取付部との間に圧縮状態で介在する。このコイルバネにより、ステアリングホイールに対してベースプレートが乗員側に付勢されている。   In Patent Document 1, a pin is provided on a base plate, and a guide hole is formed in an attachment portion provided on a spoke-side metal core. When the pin is inserted into the guide hole of the attachment portion, the switch wire fitted in the attachment portion is locked to the pin. The pin is provided with a coil spring, and the coil spring is interposed between the base plate and the mounting portion in a compressed state with the pin inserted into the guide hole. By this coil spring, the base plate is urged toward the occupant side with respect to the steering wheel.

特開2001−233159号公報JP 2001-233159 A

ところで、上記コイルバネは、ステアリングホイールに対してベースプレートを乗員側に付勢する役割を有するものであるため、通常、ピンよりも長い寸法に設定される。しかしながら、コイルバネがピンよりも突出していると、ピンをガイド孔に挿入し難くなる。   By the way, since the coil spring has a role of urging the base plate toward the occupant side with respect to the steering wheel, the coil spring is usually set to a dimension longer than that of the pin. However, if the coil spring protrudes beyond the pin, it is difficult to insert the pin into the guide hole.

そこで、本発明は、取付部材を相手側の取付孔に挿入する作業を容易に行えるようにすることを目的とする。   Therefore, an object of the present invention is to facilitate the operation of inserting the mounting member into the mounting hole on the other side.

上記課題を解決するため、第1の態様は、エアバッグ装置をステアリングホイールに取付けるためのエアバッグ装置の取付部構造であって、ステアリングホイール側に設けられた第1固定部材と、エアバッグと、前記エアバッグを膨張展開可能なインフレータと、折畳まれた前記エアバッグを覆うカバーと、前記エアバッグ、前記インフレータ及び前記カバーが固定される第2固定部材とを有するエアバッグ装置とを備え、前記第1固定部材及び前記第2固定部材の一方側に取付部材が突設され、前記第1固定部材及び前記第2固定部材の他方側に、前記取付部材を挿入可能な取付孔が形成されると共に、前記取付孔に挿入された前記取付部材に係止可能な係止体が設けられ、前記取付部材は、前記第1固定部材及び前記第2固定部材の前記一方側より突出する柱部と、前記柱部の先端部に形成された係止突部とを有し、前記取付部材に、前記取付孔に挿入された前記取付部材に前記係止体が係止した状態で、前記第1固定部材と前記第2固定部材との間に圧縮状態で配置されるコイルバネが外嵌めされ、前記コイルバネは、前記柱部に外嵌め可能な胴部と、前記胴部の先端側に設けられ、前記係止突部に前記取付部材の基端側から係止可能な部分を含む係止端部とを有する。   In order to solve the above-described problem, a first aspect is an airbag device mounting portion structure for mounting an airbag device to a steering wheel, the first fixing member provided on the steering wheel side, an airbag, An airbag device including an inflator capable of inflating and deploying the airbag, a cover covering the folded airbag, and a second fixing member to which the airbag, the inflator and the cover are fixed. A mounting member projects from one side of the first fixing member and the second fixing member, and a mounting hole into which the mounting member can be inserted is formed on the other side of the first fixing member and the second fixing member. And a locking body that can be locked to the mounting member inserted into the mounting hole is provided, and the mounting member includes the first fixing member and the second fixing member. And a locking projection formed at the tip of the column, and the locking body is engaged with the mounting member inserted into the mounting hole. In a stopped state, a coil spring disposed in a compressed state is externally fitted between the first fixing member and the second fixing member, and the coil spring includes a body part that can be externally fitted to the column part, and the body part. And a locking end including a portion that can be locked from the base end side of the mounting member.

第2の態様は、第1の態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を通る部分を含む。   A 2nd aspect is the attachment part structure of the airbag apparatus which concerns on a 1st aspect, Comprising: The said latching end part contains the part which passes the inner side of the said trunk | drum seeing from the axial center direction of the said trunk | drum. .

第3の態様は、第2の態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を横切るように折曲げられた部分を含む。   A third aspect is an airbag apparatus mounting portion structure according to the second aspect, wherein the locking end portion is folded so as to cross the inside of the trunk as viewed from the axial direction of the trunk. Includes bent parts.

第4の態様は、第2又は第3の態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を通るように偏心された部分を含む。   A 4th aspect is the attachment part structure of the airbag apparatus which concerns on a 2nd or 3rd aspect, Comprising: The said latching end part passes the inner side of the said trunk | drum seeing from the axial center direction of the said trunk | drum. So that it is eccentric.

第5の態様は、第1〜第4のいずれか1つの態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部を前記取付部材の基端側に押え付ける形状に形成されている。   A fifth aspect is an attachment structure of an airbag device according to any one of the first to fourth aspects, wherein the locking end holds the body part against the proximal end side of the attachment member. It is formed in a shape to be attached.

第6の態様は、第5の態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側にはみ出るように延出された先端部分を含む。   According to a sixth aspect, there is provided a structure for attaching an airbag device according to the fifth aspect, wherein the locking end portion extends so as to protrude outside the trunk portion when viewed from the axial center direction of the trunk portion. Includes the extended tip.

第7の態様は、第1〜第6のいずれか1つの態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側を通るように偏心された部分を含む。   A seventh aspect is an airbag device attachment structure according to any one of the first to sixth aspects, wherein the locking end portion is seen from the axial direction of the trunk portion. A portion eccentric to pass outside.

第8の態様は、第1〜第7のいずれか1つの態様に係るエアバッグ装置の取付部構造であって、前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側を通るように前記胴部よりも大径に形成された部分を含む。   An eighth aspect is an airbag device mounting portion structure according to any one of the first to seventh aspects, wherein the locking end portion is viewed from the axial direction of the trunk portion. A portion formed to have a diameter larger than that of the body portion so as to pass through the outside of the body.

第9の態様は、第1〜第8のいずれか1つの態様に係るエアバッグ装置の取付部構造であって、前記第1固定部材及び前記第2固定部材の前記一方側に、前記取付部材の基端部との間で前記コイルバネの基端部の位置規制を行う位置規制突起部が設けられている。   A ninth aspect is an attachment structure of an airbag device according to any one of the first to eighth aspects, wherein the attachment member is provided on the one side of the first fixing member and the second fixing member. A position restricting projection for restricting the position of the base end of the coil spring is provided between the base end and the base end of the coil spring.

第1の態様に係るエアバッグ装置の取付部構造によると、前記コイルバネの胴部の先端側に設けられた係止端部は、前記係止突部に前記取付部材の基端側から係止可能な部分を含むため、取付部材を取付孔に挿入する前の状態で、コイルバネの係止端部を係止突部に係止させておくことができる。従って、取付部材を取付孔に挿入する際に、コイルバネが邪魔になり難く、取付部材を取付孔に容易に挿入できる。   According to the mounting structure of the airbag device according to the first aspect, the locking end provided on the distal end side of the body portion of the coil spring is locked to the locking projection from the base end side of the mounting member. Since the possible portion is included, the locking end of the coil spring can be locked to the locking protrusion before the mounting member is inserted into the mounting hole. Therefore, when the attachment member is inserted into the attachment hole, the coil spring is unlikely to get in the way, and the attachment member can be easily inserted into the attachment hole.

第2の態様によると、前記胴部の軸心方向から視て前記胴部の内側を通る部分を、係止突部により確実に係止させることができる。   According to the 2nd aspect, the part which passes along the inner side of the said trunk | drum seeing from the axial center direction of the said trunk | drum can be reliably latched by the latching protrusion.

第3の態様によると、係止端部のうち胴部の軸心方向から視て前記胴部の内側を横切るように折曲げられた部分を、より確実に係止突部に係止させることができる。   According to the third aspect, the portion that is bent so as to cross the inside of the trunk portion as viewed from the axial direction of the trunk portion of the latching end portion is more reliably latched to the latching protrusion. Can do.

第4の態様によると、前記係止端部のうち前記胴部の軸心方向から視て前記胴部の内側を通るように偏心された部分を、より確実に係止突部に係止させることができる。   According to the fourth aspect, the portion of the locking end portion that is eccentric so as to pass through the inside of the trunk portion when viewed from the axial direction of the trunk portion is more reliably locked to the locking projection. be able to.

第5の態様によると、前記係止端部は、前記胴部を前記取付部材の基端側に押え付ける形状に形成されているため、コイルバネの胴部が係止端部を越えて取付部材の先端側に突出し難い。このため、取付部材を取付孔により容易に挿入できる。   According to the fifth aspect, the locking end portion is formed in a shape that presses the body portion against the proximal end side of the mounting member, so that the body portion of the coil spring exceeds the locking end portion and the mounting member. It is hard to protrude to the tip side of the. For this reason, the attachment member can be easily inserted through the attachment hole.

第6の態様によると、係止端部のうち胴部の軸心方向から視て前記胴部の外側にはみ出るように延出された先端部分によって、コイルバネの胴部が係止端部を越えて取付部材の先端側に突出し難いようにすることができ、取付部材を取付孔により容易に挿入できる。   According to the sixth aspect, the trunk portion of the coil spring exceeds the latching end portion by the tip end portion extending so as to protrude outside the trunk portion when viewed from the axial center direction of the trunk portion. Thus, it can be made difficult to project to the tip end side of the mounting member, and the mounting member can be easily inserted through the mounting hole.

第7の態様によると、係止端部のうち胴部の軸心方向から視て前記胴部の外側を通るように偏心された部分によって、コイルバネを第1固定部材及び第2固定部材の他方側に安定して押し当てることができる。   According to the seventh aspect, the coil spring is connected to the other of the first fixing member and the second fixing member by the portion of the locking end portion that is eccentric so as to pass through the outside of the trunk portion when viewed from the axial direction of the trunk portion. It can be pressed to the side stably.

第8の態様によると、係止端部のうち胴部の軸心方向から視て前記胴部の外側を通るように前記胴部よりも大径に形成された部分によって、コイルバネを第1固定部材及び第2固定部材の他方側に安定して押し当てることができる。   According to the eighth aspect, the coil spring is first fixed by the portion of the locking end portion that is formed to have a larger diameter than the body portion so as to pass outside the body portion when viewed from the axial center direction of the body portion. It can be stably pressed against the other side of the member and the second fixing member.

第9の態様によると、位置規制突起部によってコイルバネの基端部を位置規制できる。   According to the ninth aspect, the position of the base end of the coil spring can be regulated by the position regulating projection.

実施形態に係るステアリングホイール及びエアバッグ装置を示す分解斜視図である。It is a disassembled perspective view which shows the steering wheel and airbag apparatus which concern on embodiment. 同上のステアリングホイール及びエアバッグ装置を示す分解斜視図である。It is a disassembled perspective view which shows a steering wheel and airbag apparatus same as the above. 取付部材を示す斜視図である。It is a perspective view which shows an attachment member. 取付部材を示す平面図である。It is a top view which shows an attachment member. 取付部材を示す側面図である。It is a side view which shows an attachment member. 図4のVI−VI線断面図である。It is the VI-VI sectional view taken on the line of FIG. エアバッグ装置を示す背面図である。It is a rear view which shows an airbag apparatus. エアバッグ装置を示す斜視図である。It is a perspective view which shows an airbag apparatus. エアバッグ装置を示す分解斜視図である。It is a disassembled perspective view which shows an airbag apparatus. 取付プレート及び係止体を示す背面図である。It is a rear view which shows an attachment plate and a latching body. 図10のXI−XI線断面図である。It is the XI-XI sectional view taken on the line of FIG. 取付プレート及び係止体を示す部分斜視図である。It is a fragmentary perspective view which shows a mounting plate and a latching body. 取付プレート及び係止体を示す部分斜視図である。It is a fragmentary perspective view which shows a mounting plate and a latching body. 取付プレートを示す背面図である。It is a rear view which shows an attachment plate. 係止体を示す斜視図である。It is a perspective view which shows a latching body. 係止体を示す斜視図である。It is a perspective view which shows a latching body. 係止体を示す正面図である。It is a front view which shows a locking body. 図17のXVIII−XVIII線断面図である。It is the XVIII-XVIII sectional view taken on the line of FIG. 図17のXIX−XIX線断面図である。It is the XIX-XIX sectional view taken on the line of FIG. 図17のXX−XX線断面図である。It is the XX-XX sectional view taken on the line of FIG. 図17のXXI−XXI線断面図である。It is the XXI-XXI sectional view taken on the line of FIG. 図17のXXII−XXII線断面図である。It is XXII-XXII sectional view taken on the line of FIG. 係止体の分解斜視図である。It is a disassembled perspective view of a locking body. 係止体の分解斜視図である。It is a disassembled perspective view of a locking body. 係止体を取付部材に取付ける工程を示す説明図である。It is explanatory drawing which shows the process of attaching a latching body to an attachment member. ステアリングホイールとエアバッグ装置との取付部分を示す分解斜視図である。It is a disassembled perspective view which shows the attachment part of a steering wheel and an airbag apparatus. ステアリングホイールとエアバッグ装置との取付部分を示す側面図である。It is a side view which shows the attachment part of a steering wheel and an airbag apparatus. ステアリングホイールとエアバッグ装置との取付部分を示す断面図である。It is sectional drawing which shows the attachment part of a steering wheel and an airbag apparatus. 第1変形例を示す平面図である。It is a top view which shows a 1st modification. 第1変形例を示す側面図である。It is a side view which shows a 1st modification. 第2変形例を示す平面図である。It is a top view which shows the 2nd modification. 第2変形例を示す側面図である。It is a side view which shows a 2nd modification. 第2変形例を示す断面図である。It is sectional drawing which shows a 2nd modification. 第3変形例を示す平面図である。It is a top view which shows a 3rd modification. 第3変形例を示す側面図である。It is a side view which shows a 3rd modification. 第4変形例を示す側面図である。It is a side view which shows a 4th modification.

以下、実施形態に係るエアバッグ装置の取付部構造について説明する。図1及び図2はステアリングホイール10及びエアバッグ装置30を示す分解斜視図である。   Hereinafter, the attachment part structure of the airbag apparatus which concerns on embodiment is demonstrated. 1 and 2 are exploded perspective views showing the steering wheel 10 and the airbag device 30. FIG.

<ステアリングホイール10とエアバッグ装置30との全体構成>
エアバッグ装置の取付部構造は、エアバッグ装置30を、車両におけるステアリングホイール10に取付けるための構成である。ステアリングホイール10及びエアバッグ装置30の全体構成について概略的に説明する。
<Overall Configuration of Steering Wheel 10 and Airbag Device 30>
The attachment structure of the airbag device is a configuration for attaching the airbag device 30 to the steering wheel 10 in the vehicle. The overall configuration of the steering wheel 10 and the airbag device 30 will be schematically described.

ステアリングホイール10は、車両の操舵を行うためのものであり、ホイール本体12とスポーク14と第1固定部材としての中央部材16とを備えている。ホイール本体12は、リング状に形成されており、人による操舵力を受ける部分である。中央部材16は、ステアリングホイール10側に設けられた固定用の部材である。ここでは、中央部材16は、車体の運転席前方より後方に向けて延出するステアリングシャフトの先端部に連結可能に構成されている。スポーク14は、ホイール本体12の内周部分からその中央に向けて延びる長尺形状(ここでは細長板状)に形成されており、ホイール本体12の中央で中央部材16に連結されている。ここでは、スポーク14は、3本設けられているが、2本等であってもよい。そして、ステアリングホイール10を回転させると、その回転運動がスポーク14及び中央部材16を介してステアリングシャフトに伝達されるようになっている。なお、通常、上記ステアリングホイール10、スポーク14及び中央部材16は、樹脂等で形成された外装部材によって覆われる。   The steering wheel 10 is for steering the vehicle, and includes a wheel body 12, spokes 14, and a central member 16 as a first fixing member. The wheel main body 12 is formed in a ring shape and is a portion that receives a steering force by a person. The central member 16 is a fixing member provided on the steering wheel 10 side. Here, the central member 16 is configured to be connectable to a front end portion of a steering shaft that extends rearward from the front of the driver seat of the vehicle body. The spoke 14 is formed in a long shape (herein, an elongated plate shape) extending from the inner peripheral portion of the wheel main body 12 toward the center thereof, and is connected to the central member 16 at the center of the wheel main body 12. Here, three spokes 14 are provided, but two or the like may be provided. When the steering wheel 10 is rotated, the rotational motion is transmitted to the steering shaft via the spoke 14 and the central member 16. Normally, the steering wheel 10, the spoke 14 and the central member 16 are covered with an exterior member formed of resin or the like.

上記中央部材16には、取付部材22が突設されている。この取付部材22を用いてステアリングホイール10にエアバッグ装置30が取付固定される。   A mounting member 22 projects from the central member 16. The airbag device 30 is attached and fixed to the steering wheel 10 using the attachment member 22.

また、取付部材22には、コイルバネ25が外嵌めされている。このコイルバネ25により、中央部材16に対して離れる方向にエアバッグ装置30が付勢される。   A coil spring 25 is externally fitted to the mounting member 22. The airbag device 30 is urged by the coil spring 25 in a direction away from the central member 16.

エアバッグ装置30は、エアバッグ32と、インフレータ34と、カバー36と、第2の固定部材である取付プレート40と、係止体60とを備えている。   The airbag device 30 includes an airbag 32, an inflator 34, a cover 36, a mounting plate 40 that is a second fixing member, and a locking body 60.

エアバッグ32は、布等で袋状に形成されており、カバー36内に収容可能なように折畳まれている。   The airbag 32 is formed in a bag shape with cloth or the like, and is folded so as to be accommodated in the cover 36.

インフレータ34は、エアバッグ32を膨張展開可能に構成されている。ここでは、インフレータ34は、短円柱状のインフレータ本体部34aと、インフレータ本体部34aの外周に形成された取付フランジ34bとを有している。インフレータ本体部34aには、点火装置及びガス発生剤等が組込まれている。そして、車両衝突時に衝撃検知部等からの検知信号等を受けると、前記点火装置がガス発生剤を点火する。これにより、ガス発生剤が燃焼し、この燃焼によって発生するガスがエアバッグ32内に供給される。これにより、エアバッグ32が運転手に向けて膨張展開する。取付フランジ34bは、外周縁が方形状をなすように延出する板状に形成され、その4つの角部分に固定孔34cが形成されている。   The inflator 34 is configured so that the airbag 32 can be inflated and deployed. Here, the inflator 34 has a short cylindrical inflator body 34a and a mounting flange 34b formed on the outer periphery of the inflator body 34a. The inflator body 34a incorporates an ignition device, a gas generating agent, and the like. And when the detection signal etc. from an impact detection part etc. are received at the time of a vehicle collision, the said ignition device will ignite a gas generating agent. As a result, the gas generating agent burns, and the gas generated by this combustion is supplied into the airbag 32. As a result, the airbag 32 is inflated and deployed toward the driver. The attachment flange 34b is formed in a plate shape extending so that the outer peripheral edge forms a square shape, and fixing holes 34c are formed at four corner portions thereof.

カバー36は、樹脂等により形成された部材であり、カバー本体37と立壁38とを有している。カバー本体37は、なだらかに湾曲するドーム状に形成されている。このカバー本体37の内面側に折畳まれたエアバッグ32の周りを囲う立壁38が突設されている。ここでは、立壁38は、円筒状に形成されているが、その他、角筒状、或は、エアバッグ32の周りを部分的に囲う形状に形成されていてもよい。そして、折畳まれたエアバッグ32が、前記カバー本体37及び立壁38で囲まれる空間内に収容される。なお、カバー本体37には、エアバッグ32の膨張展開力を受けて割れ容易なティアラインが形成されている。   The cover 36 is a member formed of resin or the like, and includes a cover main body 37 and a standing wall 38. The cover body 37 is formed in a dome shape that gently curves. A standing wall 38 surrounding the airbag 32 folded on the inner surface side of the cover main body 37 is projected. Here, the standing wall 38 is formed in a cylindrical shape, but may alternatively be formed in a rectangular tube shape or a shape that partially surrounds the airbag 32. The folded airbag 32 is accommodated in a space surrounded by the cover body 37 and the standing wall 38. The cover body 37 is formed with a tear line that is easily broken by receiving the inflating and deploying force of the airbag 32.

取付プレート40は、上記エアバッグ32及びインフレータ34が取付けられた状態で、上記カバー36に取付固定可能に構成されている。   The mounting plate 40 is configured to be fixed to the cover 36 in a state where the airbag 32 and the inflator 34 are mounted.

すなわち、取付プレート40は、立壁38の開口を閉塞可能な程度の広がりを有する板状部材に形成されている。ここでは、取付プレート40は、立壁38の開口と同じ形状の円形板部42と、円形板部42の外周囲に形成された周壁48とを有している。そして、円形板部42が立壁38の開口を閉塞した状態で、周壁48が立壁38の開口外周縁部に外嵌めされる。   In other words, the mounting plate 40 is formed as a plate-like member having an extent that can close the opening of the standing wall 38. Here, the mounting plate 40 includes a circular plate portion 42 having the same shape as the opening of the standing wall 38, and a peripheral wall 48 formed on the outer periphery of the circular plate portion 42. Then, with the circular plate portion 42 closing the opening of the standing wall 38, the peripheral wall 48 is externally fitted to the opening outer peripheral edge portion of the standing wall 38.

円形板部42の中央部には、開口42hが形成され、この開口42h内にインフレータ34が配設される。   An opening 42h is formed at the center of the circular plate portion 42, and the inflator 34 is disposed in the opening 42h.

また、円形板部42のうち開口42h外周には、ネジ挿通孔42cが形成されており、このネジ挿通孔42cを利用して、インフレータ34及びエアバッグ32が次のようにして取付けられる。すなわち、上記エアバッグ32内であってそのガス導入口32h周りに挟込ブラケット50が配設される。挟込ブラケット50は、金属板等で形成された部材であり、ここでは、略方形板形状に形成されている。挟込ブラケット50の中央部には、インフレータ34を配設可能な開口50hが形成されている。また、挟込ブラケット50の各角部にネジ部51が突設されている。挟込ブラケット50がエアバッグ32内に配設された状態で、各ネジ部51はエアバッグ32のうちガス導入口32h周りに形成された孔を通ってエアバッグ32外に突出している。また、インフレータ本体部34aが取付プレート40の開口42h内に配設されると共に、取付フランジ34bが、その固定孔34cをネジ挿通孔42cと同じ位置に配設した状態で取付プレート40に重ねて配設される。この状態で、各ネジ部51がネジ挿通孔42c及び固定孔34cを通って取付プレート40から突出するように、挟込ブラケット50が取付プレート40に重ね合される。そして、取付プレート40から突出する各ネジ部51に、ナット52を螺合締結する。これにより、インフレータ34が取付プレート40に取付固定されると共に、エアバッグ32が挟込ブラケット50と取付プレート40との間に挟込まれた状態で取付プレート40に取付固定される。この状態では、インフレータ34の少なくとも一部はエアバッグ32内に配設されている。   Further, a screw insertion hole 42c is formed on the outer periphery of the opening 42h in the circular plate portion 42, and the inflator 34 and the airbag 32 are attached as follows using the screw insertion hole 42c. That is, the sandwiching bracket 50 is disposed in the airbag 32 and around the gas inlet 32h. The sandwiching bracket 50 is a member formed of a metal plate or the like, and is here formed in a substantially rectangular plate shape. An opening 50 h in which the inflator 34 can be disposed is formed at the center of the sandwiching bracket 50. In addition, threaded portions 51 protrude from the corner portions of the sandwiching bracket 50. In a state where the sandwiching bracket 50 is disposed in the airbag 32, each screw portion 51 protrudes out of the airbag 32 through a hole formed in the airbag 32 around the gas inlet 32h. The inflator body 34a is disposed in the opening 42h of the mounting plate 40, and the mounting flange 34b is overlapped with the mounting plate 40 with the fixing hole 34c disposed at the same position as the screw insertion hole 42c. Arranged. In this state, the sandwiching bracket 50 is overlapped with the mounting plate 40 so that each screw portion 51 protrudes from the mounting plate 40 through the screw insertion hole 42c and the fixing hole 34c. Then, a nut 52 is screwed and fastened to each screw portion 51 protruding from the mounting plate 40. Thereby, the inflator 34 is attached and fixed to the attachment plate 40, and the airbag 32 is attached and fixed to the attachment plate 40 in a state where the airbag 32 is sandwiched between the sandwiching bracket 50 and the attachment plate 40. In this state, at least a part of the inflator 34 is disposed in the airbag 32.

この取付プレート40に対して上記カバー36も取付固定される。その取付構造については後に説明する。   The cover 36 is also fixedly attached to the mounting plate 40. The mounting structure will be described later.

また、取付プレート40には、ステアリングホイール10側の取付部材22と対応する位置に取付孔43hが形成されている。取付プレート40のうち各取付孔43hに対応する部分に係止体60が取付けられている。エアバッグ装置30をステアリングホイール10に向けて押込み、各取付部材22を対応する各取付孔43hに挿通すると、各取付部材22に係止体60が係止して、エアバッグ装置30がステアリングホイール10に取付けられるようになっている。   The mounting plate 40 has a mounting hole 43h at a position corresponding to the mounting member 22 on the steering wheel 10 side. A locking body 60 is attached to a portion of the attachment plate 40 corresponding to each attachment hole 43h. When the airbag device 30 is pushed toward the steering wheel 10 and each mounting member 22 is inserted into the corresponding mounting hole 43h, the locking body 60 is locked to each mounting member 22, and the airbag device 30 is moved to the steering wheel. 10 can be attached.

<ステアリングホイール10にエアバッグ装置30を取付ける構成>
ステアリングホイール10に上記エアバッグ装置30を取付けるための構成についてより具体的に説明する。
<Configuration in which the airbag device 30 is attached to the steering wheel 10>
The configuration for attaching the airbag device 30 to the steering wheel 10 will be described more specifically.

図3は取付部材22を示す斜視図であり、図4は取付部材22を示す平面図であり、図5は取付部材22を示す側面図であり、図6は図4のVI−VI線断面図である。   3 is a perspective view showing the mounting member 22, FIG. 4 is a plan view showing the mounting member 22, FIG. 5 is a side view showing the mounting member 22, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG.

図1〜図6に示すように、ステアリングホイール10の中央部材16は、金属等の導電性部材により形成されており、この中央部材16に取付部材22が突設されている。ここでは、中央部材16の中心周りに3つの取付ベース20が設けられ、それぞれの取付ベース20に固定側接点21及び取付部材22が突設されている。   As shown in FIGS. 1 to 6, the central member 16 of the steering wheel 10 is formed of a conductive member such as a metal, and an attachment member 22 is projected from the central member 16. Here, three attachment bases 20 are provided around the center of the central member 16, and a fixed-side contact 21 and an attachment member 22 project from each attachment base 20.

より具体的には、取付ベース20、固定側接点21及び取付部材22は、金属等の導電性部材により一体形成されている。   More specifically, the mounting base 20, the fixed contact 21 and the mounting member 22 are integrally formed of a conductive member such as metal.

取付ベース20は、方形板状に形成されており、その一主面に固定側接点21及び取付部材22が突設されている。なお、取付ベース20は、中央部材16に対して一体形成されたものであっても、ねじ止等で取付けられたものであってもよい。   The mounting base 20 is formed in a square plate shape, and a fixed side contact 21 and a mounting member 22 project from one main surface thereof. The mounting base 20 may be integrally formed with the central member 16 or may be mounted by screwing or the like.

固定側接点21は、短円柱状部分の先端部により細径の短円柱状部分が突設された形状とされている。   The fixed-side contact 21 has a shape in which a short cylindrical portion having a small diameter protrudes from the tip of the short cylindrical portion.

取付部材22は、柱部23と係止突部24とを有している。柱部23は、取付ベース20よりステアリングホイール10の前方側(エアバッグ装置30側)に突出するように形成されている。ここでは、柱部23は、半円柱状に形成されている。この柱部23の先端に係止突部24が突設されている。ここでは、係止突部24は、ステアリングホイール10の中央側に向けて突出するように形成されている。また、この係止突部24のうちエアバッグ装置30側の先端部には、ステアリングホイール10の中心に向けて順次高さ寸法が低くなるように傾斜する傾斜面22aが形成されている。また、この係止突部24を、柱部23の軸方向に沿って視ると円形状をなしている。   The attachment member 22 has a column portion 23 and a locking projection 24. The column portion 23 is formed so as to protrude from the mounting base 20 to the front side (airbag device 30 side) of the steering wheel 10. Here, the column portion 23 is formed in a semi-cylindrical shape. A locking projection 24 projects from the tip of the column portion 23. Here, the locking protrusion 24 is formed so as to protrude toward the center side of the steering wheel 10. In addition, an inclined surface 22 a is formed at the distal end portion of the locking projection 24 on the airbag device 30 side so as to incline so that the height dimension gradually decreases toward the center of the steering wheel 10. Further, the locking projection 24 has a circular shape when viewed along the axial direction of the column portion 23.

なお、柱部は、円柱状、角柱状、筒状等であってもよい。また、係止突部24は、係止体60に係止可能な形状であればよく、例えば、柱部の先端部の外周囲全体に突出する鍔形状であってもよい。つまり、係止突部は、柱部の外周の少なくとも一部で外側に突出する形状であればよい。   The column portion may be a columnar shape, a prismatic shape, a cylindrical shape, or the like. Moreover, the latching protrusion 24 should just be a shape which can be latched to the latching body 60, for example, may be a hook shape which protrudes to the whole outer periphery of the front-end | tip part of a pillar part. That is, the latching protrusion should just be the shape which protrudes outside in at least one part of the outer periphery of a pillar part.

また、この取付部材22にコイルバネ25が外嵌めされる。コイルバネ25は、胴部26と係止端部27とを有している。胴部26は、上記柱部23に外嵌め可能な内径を有している。換言すれば、胴部26の内周部の曲げ半径は、柱部23の横断面形状における弧状周縁部の曲げ半径よりも大きい。これにより、胴部26が上記柱部23に外嵌めされた状態で、胴部26は柱部23の軸方向に沿って伸縮変形可能とされている。   In addition, a coil spring 25 is externally fitted to the mounting member 22. The coil spring 25 has a body portion 26 and a locking end portion 27. The body portion 26 has an inner diameter that can be fitted onto the column portion 23. In other words, the bending radius of the inner peripheral portion of the body portion 26 is larger than the bending radius of the arc-shaped peripheral edge portion in the cross-sectional shape of the column portion 23. As a result, the body portion 26 can be stretched and deformed along the axial direction of the column portion 23 in a state where the body portion 26 is externally fitted to the column portion 23.

また、係止端部27は、上記係止突部24に取付部材22の基端側から係止可能な部分を含む。かかる係止端部27を形成するためには、コイルバネ25の先端部の少なくとも一部を、胴部26の軸方向から視て胴部の内側を通るように形成すればよい。ここでは、係止端部27は、胴部26の端部より延出する部分が胴部26の内周を、横切るように(より具体的にはやや外向きの弧を描きつつ横切るように)折曲げられた構成とされている。   The locking end portion 27 includes a portion that can be locked to the locking protrusion 24 from the proximal end side of the mounting member 22. In order to form the locking end portion 27, at least a part of the tip end portion of the coil spring 25 may be formed so as to pass through the inside of the trunk portion when viewed from the axial direction of the trunk portion 26. Here, the locking end portion 27 extends so that the portion extending from the end portion of the body portion 26 crosses the inner periphery of the body portion 26 (more specifically, while drawing a slightly outward arc). ) It is a folded configuration.

また、胴部26の軸方向から視て胴部26と係止端部27との間には柱部23が通過可能な空間が設けられている。つまり、コイルバネ25の軸心と取付部材22の軸心とが一致するようにコイルバネ25を取付部材22に取付けた状態で、胴部26の軸方向から視ると、係止端部27は係止突部24には重複するが、柱部23には重複しないように形成されている。従って、コイルバネ25のうち係止端部27が設けられた部分も、柱部23の軸方向に沿って移動できるようになっている。なお、コイルバネ25の自然長は、取付部材22の基端部と係止端部27との間の長さ寸法よりも長く、好ましくは、取付部材22の全体長よりも長い。   Further, a space through which the column part 23 can pass is provided between the body part 26 and the locking end part 27 when viewed from the axial direction of the body part 26. That is, when the coil spring 25 is attached to the attachment member 22 so that the axis of the coil spring 25 and the axis of the attachment member 22 coincide with each other, when viewed from the axial direction of the trunk portion 26, the locking end 27 is engaged. Although it overlaps with the stop protrusion 24, it is formed so that it may not overlap with the pillar part 23. Therefore, the portion of the coil spring 25 where the locking end portion 27 is provided can also move along the axial direction of the column portion 23. The natural length of the coil spring 25 is longer than the length dimension between the base end portion of the attachment member 22 and the locking end portion 27, and preferably longer than the entire length of the attachment member 22.

そして、取付部材22に係止体60が係止する前の状態では、係止端部27を係止突部24に対して取付部材22の基端側より係止させて、コイルバネ25を取付部材22の先端側に突出させないように圧縮状態に維持できるようになっている。   In a state before the locking body 60 is locked to the mounting member 22, the locking end 27 is locked to the locking protrusion 24 from the base end side of the mounting member 22, and the coil spring 25 is mounted. The member 22 can be maintained in a compressed state so as not to protrude toward the distal end side.

また、取付部材22に係止体60が係止した状態では、コイルバネ25は、中央部材16に設けられた取付ベース20と取付プレート40との間に圧縮状態で介在配置される。そして、コイルバネ25が自然長に復帰しようとする弾性力によって、中央部材16に対して取付プレート40を離反する方向に付勢することができる。   Further, in a state where the locking body 60 is locked to the mounting member 22, the coil spring 25 is disposed in a compressed state between the mounting base 20 provided on the central member 16 and the mounting plate 40. Then, the mounting plate 40 can be urged away from the central member 16 by the elastic force of the coil spring 25 trying to return to the natural length.

図7はエアバッグ装置30を示す背面図であり、図8はエアバッグ装置30を示す斜視図であり、図9はエアバッグ装置30を示す分解斜視図である。なお、図8及び図9において、インフレータ34及びエアバッグ32は省略されている。図10は取付プレート40及び係止体60を示す背面図であり、図11は図10のXI−XI線断面図であり、図12及び図13は取付プレート40及び係止体60を示す部分斜視図であり、図14は取付プレート40を示す背面図である。また、図15及び図16は係止体60を示す斜視図であり、図17は係止体60を示す正面図であり、図18〜図22は図17に示す係止体60の断面図であり、図23及び図24は係止体60の分解斜視図であり、図25は係止体60を取付部材22に取付ける工程を示す説明図である。   FIG. 7 is a rear view showing the airbag device 30, FIG. 8 is a perspective view showing the airbag device 30, and FIG. 9 is an exploded perspective view showing the airbag device 30. 8 and 9, the inflator 34 and the airbag 32 are omitted. 10 is a rear view showing the mounting plate 40 and the locking body 60, FIG. 11 is a sectional view taken along line XI-XI in FIG. 10, and FIGS. 12 and 13 are parts showing the mounting plate 40 and the locking body 60. FIG. 14 is a rear view showing the mounting plate 40. 15 and 16 are perspective views showing the locking body 60, FIG. 17 is a front view showing the locking body 60, and FIGS. 18 to 22 are sectional views of the locking body 60 shown in FIG. 23 and 24 are exploded perspective views of the locking body 60, and FIG. 25 is an explanatory view showing a process of mounting the locking body 60 to the mounting member 22.

取付プレート40には、上記各取付部材22に対応して各係止体支持部44が設けられ、それぞれの係止体支持部44により係止体60が支持される。   The mounting plate 40 is provided with each locking body support portion 44 corresponding to each mounting member 22, and the locking body 60 is supported by each locking body support portion 44.

係止体60は、弾性変形可能な線状体によって形成されている。より具体的には、係止体60は、弾性変形可能な金属ワイヤを曲げ変形させることによって形成されており、取付部材22が係止可能な直線状部分61と、直線状部分61の一端部から折返すU字状部分62を有している。U字状部分62は、半円弧を描くように折返す円弧状曲げ部分62aと、その円弧状曲げ部分62aの一端側に直線状に延出する固定端部62bとを有している。つまり、円弧状曲げ部分62aは、直線状部分61と固定端部62bとの間に介在し、両者を連結している。固定端部62bは、前記直線状部分61より短く、かつ、直線状部分61に対して平行状態となっている。つまり、係止体60は、全体としてJ字状に形成されている。なお、後述する係止体60の取付作業を実施できる範囲であれば、上記直線状部分61は多少曲っていてもよい。また、固定端部62bと直線状部分61とは斜め姿勢となっていてもよい。   The locking body 60 is formed of a linear body that can be elastically deformed. More specifically, the locking body 60 is formed by bending and deforming an elastically deformable metal wire, and a linear portion 61 to which the mounting member 22 can be locked, and one end portion of the linear portion 61. It has a U-shaped part 62 that turns back from the side. The U-shaped portion 62 includes an arc-shaped bent portion 62a that is folded back so as to draw a semicircular arc, and a fixed end portion 62b that extends linearly on one end side of the arc-shaped bent portion 62a. That is, the arc-shaped bent portion 62a is interposed between the linear portion 61 and the fixed end portion 62b and connects the two. The fixed end portion 62 b is shorter than the linear portion 61 and is in a parallel state with respect to the linear portion 61. That is, the locking body 60 is formed in a J shape as a whole. It should be noted that the linear portion 61 may be slightly bent as long as it is within a range in which an attaching operation of a locking body 60 described later can be performed. Further, the fixed end portion 62b and the linear portion 61 may be inclined.

係止体60を全体としてJ字状に形成しているのは、取付プレート40に固定された固定端部62bと、係止体60が係止する直線状部分61との間で、曲げ変形容易な円弧状曲げ部分62aを設けることで、取付部材22を係止する際の直線状部分61の変位を容易にするためである。   The locking body 60 is formed in a J-shape as a whole between the fixed end 62b fixed to the mounting plate 40 and the linear portion 61 locked by the locking body 60. This is because the provision of the easy arc-shaped bent portion 62a facilitates the displacement of the linear portion 61 when the mounting member 22 is locked.

また、取付部材に係止する係止体の構成は上記例に限られない。例えば、複数の取付部材22に対して、環状又はU字状に曲げられた単一の係止体が係止する構成であってもよい。   Moreover, the structure of the latching body latched to an attachment member is not restricted to the said example. For example, the structure which the single latching body bent in cyclic | annular form or U shape with respect to the some attachment member 22 may latch.

また、ここでは、係止体60は樹脂被覆部64により覆われている。樹脂被覆部64は、上記直線状部分61を覆う直線状被覆部分65と、固定端部62bを覆う固定被覆部分66と、円弧状曲げ部分62aを覆う曲げ被覆部分67とを有している。これらの直線状被覆部分65、固定被覆部分66及び曲げ被覆部分67は、係止体60の形状に沿ってJ字状に曲るように、樹脂により一体形成されている。   Here, the locking body 60 is covered with a resin coating portion 64. The resin coating portion 64 includes a linear coating portion 65 that covers the linear portion 61, a fixed coating portion 66 that covers the fixed end 62b, and a bending coating portion 67 that covers the arc-shaped bending portion 62a. The linear covering portion 65, the fixed covering portion 66, and the bending covering portion 67 are integrally formed of resin so as to be bent in a J shape along the shape of the locking body 60.

直線状被覆部分65は、直線状部分61の中間部及び円弧状曲げ部分62a側の部分の内側及び両側方を覆う半管状部分と、当該半管状部分の一端側で直線状部分61の外向き端部の外周囲全体を覆う管状部分とを有する形状とされている。   The linear covering portion 65 includes a semi-tubular portion covering the inside and both sides of the intermediate portion of the linear portion 61 and the arc-shaped bent portion 62a side, and outward of the linear portion 61 on one end side of the semi-tubular portion. It is made into the shape which has a tubular part which covers the whole outer periphery of an edge part.

また、固定被覆部分66は、固定端部62bの外周囲全体を覆う管状部分に形成され、その外形は、角柱状をなすように形成されている。また、固定被覆部分66のうち曲げ被覆部分67に連なる部分には、固定被覆部分66の先端側に面する当接面66fを有する位置決め突部66aが形成されている。   The fixed covering portion 66 is formed in a tubular portion that covers the entire outer periphery of the fixed end portion 62b, and its outer shape is formed in a prismatic shape. Further, a positioning projection 66 a having a contact surface 66 f facing the front end side of the fixed coating portion 66 is formed in a portion of the fixed coating portion 66 that is continuous with the bending coating portion 67.

また、曲げ被覆部分67は、円弧状曲げ部分62aに沿って曲りつつ円弧状曲げ部分62aの内周側のみを覆う形状に形成されている。   The bend covering portion 67 is formed in a shape that covers only the inner peripheral side of the arc-shaped bent portion 62a while bending along the arc-shaped bent portion 62a.

なお、ここでは、曲げ被覆部分67のうち直線状被覆部分65の延長上に、一対の挟込片68が延設され、一対の挟込片68の内側に抜止め突部68aが突設されている。そして、一対の挟込片68が、曲げ被覆部分67の外周に沿って配設された円弧状曲げ部分62aを挟込むと共に、抜止め突部68aが円弧状曲げ部分62aの外周側に当接可能な位置に配設される。これにより、円弧状曲げ部分62aの抜止めが図られ、もって、係止体60と樹脂被覆部64との合体状態が維持される。   Here, a pair of sandwiching pieces 68 are extended on the extension of the linear covering portion 65 in the bending covering portion 67, and a retaining projection 68 a is projected inside the pair of sandwiching pieces 68. ing. Then, the pair of sandwiching pieces 68 sandwich the arc-shaped bent portion 62a disposed along the outer periphery of the bent covering portion 67, and the retaining projection 68a contacts the outer peripheral side of the arc-shaped bent portion 62a. It is arranged at a possible position. As a result, the arc-shaped bent portion 62a is prevented from being pulled out, so that the combined state of the locking body 60 and the resin coating portion 64 is maintained.

係止体60に対する樹脂被覆部64の装着は次のようにして行われる。すなわち、直線状部分61をその長手方向に沿って直線状被覆部分65に挿入すると共に、固定端部62bをその長手方向に沿って固定被覆部分66に挿入する(図23及び図24参照)。直線状部分61及び固定端部62bを直線状被覆部分65及び固定被覆部分66に完全に挿入すると、曲げ被覆部分67の外周に円弧状曲げ部分62aが配設される。上記挿入途中で、円弧状曲げ部分62aを抜止め突部68aに当接させて、一対の挟込片68を押広げる。そして、円弧状曲げ部分62aが抜止め突部68aを越えると、円弧状曲げ部分62aが一対の挟込片68間に配設されると共に、抜止め突部68aが円弧状曲げ部分62aの外周側に当接可能な位置に配設される。これにより、樹脂被覆部64からの係止体60の抜止めが図られる。このようにして、樹脂被覆部64が係止体60に装着される。   The resin covering portion 64 is attached to the locking body 60 as follows. That is, the linear portion 61 is inserted into the linear covering portion 65 along the longitudinal direction, and the fixed end portion 62b is inserted into the fixed covering portion 66 along the longitudinal direction (see FIGS. 23 and 24). When the linear portion 61 and the fixed end portion 62 b are completely inserted into the linear covering portion 65 and the fixed covering portion 66, the arc-shaped bending portion 62 a is disposed on the outer periphery of the bending covering portion 67. In the middle of the insertion, the arcuate bent portion 62a is brought into contact with the retaining projection 68a, and the pair of sandwiching pieces 68 are expanded. When the arc-shaped bent portion 62a exceeds the retaining projection 68a, the arc-shaped bent portion 62a is disposed between the pair of sandwiching pieces 68, and the retaining projection 68a is the outer periphery of the arc-shaped bent portion 62a. It arrange | positions in the position which can contact | abut to the side. Thereby, the retaining body 60 is prevented from being detached from the resin coating portion 64. In this way, the resin coating portion 64 is attached to the locking body 60.

上記樹脂被覆部64は、係止体60の金属部分が取付部材22及び取付プレート40に直接接触することを抑制する役割を果す。これにより、振動等による、係止体60と取付部材22及び取付プレート40との間での異音が抑制される。また、通常状態での取付部材22と取付プレート40とが電気的に絶縁された状態に維持され、ホーンをならすためのオンオフスイッチ構成を組込むことが可能となる。   The resin coating portion 64 plays a role of suppressing the metal portion of the locking body 60 from directly contacting the mounting member 22 and the mounting plate 40. Thereby, the abnormal noise between the latching body 60, the attachment member 22, and the attachment plate 40 by vibration etc. is suppressed. Further, the mounting member 22 and the mounting plate 40 in the normal state are maintained in an electrically insulated state, and an on / off switch configuration for leveling the horn can be incorporated.

この係止体60が直線状部分61に沿って係止体支持部44に押込み装着されると、直線状部分61が、取付部材22が係止可能な位置に配設された状態で、係止体支持部44によって支持される。   When the locking body 60 is pushed and attached to the locking body support portion 44 along the linear portion 61, the linear portion 61 is disposed in a position where the mounting member 22 can be locked. It is supported by the stop support part 44.

すなわち、取付プレート40の円形板部42のうちステアリングホイール10の取付部材22と対応する各部分が、その周辺部に対して周壁48とは反対側に隆起するようにプレスされた支持段部44sに形成されている。この支持段部44sに取付部材22を挿通可能な取付孔43hが形成されている。ここでは、取付孔43hに後述する筒部材54が内嵌めされるため、取付孔43hは、当該筒部材54の厚み分を考慮して、取付部材22を挿通可能な大きさに設定されている。また、取付孔43hは、コイルバネ25の胴部の外周部よりも小さく、好ましくは、係止端部27に当接可能な大きさに形成されている。ここで、取付孔43hの大きさは、筒部材54が取付けられている場合には、当該筒部材54の厚み分を考慮した大きさをいう。   That is, the support step portion 44 s pressed so that each portion of the circular plate portion 42 of the mounting plate 40 corresponding to the mounting member 22 of the steering wheel 10 protrudes on the opposite side of the peripheral wall 48 with respect to the peripheral portion. Is formed. An attachment hole 43h through which the attachment member 22 can be inserted is formed in the support step 44s. Here, since a cylinder member 54 to be described later is fitted into the attachment hole 43h, the attachment hole 43h is set to a size that allows the attachment member 22 to be inserted in consideration of the thickness of the cylinder member 54. . Further, the mounting hole 43h is smaller than the outer peripheral portion of the body portion of the coil spring 25, and is preferably formed in a size capable of contacting the locking end portion 27. Here, the size of the mounting hole 43h refers to a size in consideration of the thickness of the cylindrical member 54 when the cylindrical member 54 is mounted.

係止体支持部44は、取付孔43hを挟むように形成された一対の挿通孔44a、44bと、取付孔43hに隣設され、前記U字状部分62の先端部の固定端部62bを挿入固定可能な固定部45とを有している。   The locking body support portion 44 is provided adjacent to the pair of insertion holes 44a and 44b formed so as to sandwich the attachment hole 43h, and the attachment hole 43h, and the fixed end portion 62b of the distal end portion of the U-shaped portion 62 is provided. And a fixing portion 45 that can be inserted and fixed.

ここでは、一対の挿通孔44a、44bは、支持段部44sの周囲の立上がり壁部分のうち前記取付孔43hを取付プレート40の内外方向(取付プレート40の中心に対する放射方向)に対して直交する方向で挟む位置に形成されている。従って、上記直線状部分61を一対の挿通孔44a、44bに挿入すると、係止体60の直線状部分61が取付プレート40の内外方向に対して直交する姿勢で、取付孔43hを横切るように配設される。   Here, the pair of insertion holes 44a and 44b are orthogonal to the inner and outer direction of the mounting plate 40 (radial direction with respect to the center of the mounting plate 40) in the rising wall portion around the support step 44s. It is formed at a position sandwiched by the direction. Therefore, when the linear portion 61 is inserted into the pair of insertion holes 44 a and 44 b, the linear portion 61 of the locking body 60 crosses the mounting hole 43 h in a posture orthogonal to the inner and outer directions of the mounting plate 40. Arranged.

また、一対の挿通孔44a、44bは、取付孔43hの周りで前記直線状部分61と交差する方向に長い孔形状に形成されている。従って、係止体60の直線状部分61は、取付プレート40の内外方向に変位できるようになっている。   The pair of insertion holes 44a and 44b are formed in a long hole shape in a direction intersecting with the linear portion 61 around the attachment hole 43h. Accordingly, the linear portion 61 of the locking body 60 can be displaced in the inner and outer directions of the mounting plate 40.

固定部45は、上記のように、取付孔43hを横切るように直線状部分61を配設した状態で、固定端部62bが配設される位置に設けられている。固定部45は、上記支持段部44sの周囲の立上がり壁部分の一部に、固定端部62bを挿入可能な挿入孔45aを形成すると共に、その挿入孔45aの内側に固定端部62bを位置決め可能な凹溝45b(図11参照)を形成することにより形成されている。凹溝45bは上記のように配設される直線状部分61の長手方向に沿って延在しており、挿入孔45aは、凹溝45bに対して取付孔43hの反対側に開口している。   As described above, the fixed portion 45 is provided at a position where the fixed end portion 62b is disposed in a state where the linear portion 61 is disposed so as to cross the mounting hole 43h. The fixing portion 45 forms an insertion hole 45a into which the fixed end portion 62b can be inserted in a part of the rising wall portion around the support step portion 44s, and positions the fixed end portion 62b inside the insertion hole 45a. It is formed by forming a possible groove 45b (see FIG. 11). The concave groove 45b extends along the longitudinal direction of the linear portion 61 arranged as described above, and the insertion hole 45a opens to the opposite side of the mounting hole 43h with respect to the concave groove 45b. .

そして、直線状部分61を一対の挿通孔44a、44bに通しつつ、固定被覆部分66の当接面66fが挿入孔45aの周縁部に当接するまで、固定端部62bを上記固定部45内に押込む(図25参照)。すると、固定端部62bが固定部45によりその挿入方向及び幅方向への位置決めをなされた状態で支持される。この状態で、直線状部分61が一対の挿通孔44a、44b間で取付孔43hを横切るように配設される。   Then, while passing the linear portion 61 through the pair of insertion holes 44a and 44b, the fixed end portion 62b is inserted into the fixed portion 45 until the contact surface 66f of the fixed covering portion 66 contacts the peripheral edge of the insertion hole 45a. Push in (see FIG. 25). Then, the fixed end 62b is supported in a state in which the fixed end 45 is positioned in the insertion direction and the width direction. In this state, the linear portion 61 is disposed across the attachment hole 43h between the pair of insertion holes 44a and 44b.

なお、係止体60の挿入方向への位置決めは、上記構成の他、係止体60のU字状部分62の内周部或は係止体60の挿入方向の先端側の部分を、取付プレート40等に設けられた部材に押し当てる構成等により実現されてもよい。   In addition, the positioning of the locking body 60 in the insertion direction is performed by attaching the inner peripheral portion of the U-shaped portion 62 of the locking body 60 or the tip side in the insertion direction of the locking body 60 in addition to the above configuration. You may implement | achieve by the structure etc. which press on the member provided in plate 40 grade | etc.,.

また、上記取付孔43hには、樹脂製の筒部材54が内嵌めされる。筒部材54の一端部の外周には鍔状部54aが形成され、当該鍔状部54aが取付孔43hの外周に接するまで筒部材54の一端部が取付孔43hに内嵌めされる(図1、図8等参照)。また、筒部材54の外周囲には、上記一対の挿通孔44a、44bの内周側で筒部材54の周方向に沿って延びる挿通溝54bが形成されており、上記直線状部分61は、当該挿通溝54bを通って取付孔43hを横切るように配設される(図1、図8等参照)。この筒部材54は、係止体60が取付プレート40に直接接触することを抑制する役割を果している。これにより、振動等による、取付部材22と取付プレート40との間での異音が抑制される。また、通常状態での取付部材22と取付プレート40とが電気的に絶縁された状態に維持され、ホーンをならすためのオンオフスイッチ構成を組込むことが可能となる。もっとも、筒部材54は必須ではない。つまり、筒部材54は、取付孔43hの内周縁部及びその周囲を覆う、任意構成要素である一種のカバーであり、ここでは、筒部材54の有無に拘らず、取付部材22の挿入対象である孔を取付孔43hとして説明する場合がある。   In addition, a resin cylindrical member 54 is fitted in the mounting hole 43h. A flange portion 54a is formed on the outer periphery of one end portion of the cylindrical member 54, and one end portion of the cylindrical member 54 is fitted into the mounting hole 43h until the flange portion 54a contacts the outer periphery of the mounting hole 43h (FIG. 1). , See FIG. Further, on the outer periphery of the cylindrical member 54, an insertion groove 54b extending along the circumferential direction of the cylindrical member 54 is formed on the inner peripheral side of the pair of insertion holes 44a and 44b. It is disposed so as to cross the mounting hole 43h through the insertion groove 54b (see FIGS. 1 and 8). The cylindrical member 54 plays a role of suppressing the locking body 60 from coming into direct contact with the mounting plate 40. Thereby, the abnormal noise between the attachment member 22 and the attachment plate 40 by vibration etc. is suppressed. Further, the mounting member 22 and the mounting plate 40 in the normal state are maintained in an electrically insulated state, and an on / off switch configuration for leveling the horn can be incorporated. However, the cylindrical member 54 is not essential. That is, the cylindrical member 54 is a kind of cover that is an optional component that covers the inner peripheral edge of the mounting hole 43h and the periphery thereof. Here, the cylindrical member 54 is an insertion target of the mounting member 22 regardless of the presence or absence of the cylindrical member 54. A certain hole may be described as the attachment hole 43h.

上記係止体60の挿入方向反対側への抜止めを図る構成について説明する。   A configuration for securing the locking body 60 to the side opposite to the insertion direction will be described.

すなわち、上記取付プレート40に規制片挿通孔47hが形成されている。より具体的には、上記各挿入孔45aから取付プレート40の周縁方向に沿って離れた位置に規制片挿通孔47hが形成されている。ここでは、規制片挿通孔47hは、取付プレート40の円形板部42の周縁に沿った弧状孔形状に形成されているが、これは必須ではない。   That is, a restriction piece insertion hole 47 h is formed in the mounting plate 40. More specifically, a restriction piece insertion hole 47h is formed at a position away from each insertion hole 45a along the peripheral direction of the mounting plate 40. Here, the restricting piece insertion hole 47h is formed in an arcuate hole shape along the peripheral edge of the circular plate portion 42 of the mounting plate 40, but this is not essential.

立壁38の開口側周縁部のうち上記各規制片挿通孔47hに対応する位置に、規制片39が突設されている。規制片39は、規制片挿通孔47hの延在方向に沿った弧状片形状で、かつ、規制片挿通孔47hの長さ寸法とほぼ同じ長さ寸法に設定されている。もっとも、規制片39は、規制片挿通孔47hに挿通可能な形状であればよい。   A restricting piece 39 protrudes at a position corresponding to each restricting piece insertion hole 47 h in the opening side peripheral edge of the standing wall 38. The restricting piece 39 has an arcuate piece shape along the extending direction of the restricting piece insertion hole 47h, and is set to have the same length as the length of the restricting piece insertion hole 47h. But the restriction | limiting piece 39 should just be a shape which can be inserted in the restriction | limiting piece insertion hole 47h.

そして、立壁38の開口側周縁部を取付プレート40の周壁48内に嵌め込み、規制片39を規制片挿通孔47hに挿通させると共に、立壁38の開口側周縁部の他の部分を円形板部42の内面に当接させる。すると、規制片39が取付プレート40のうち係止体60の円弧状曲げ部分62aの外周側の位置に突出する。これにより、規制片39が円弧状曲げ部分62aの外周側の部分に当接可能な位置に配設され、係止体60の直線状部分61の長手方向の少なくとも一方側(ここでは、係止体60の挿入方向の反対側)から係止体60の抜止め規制が行われる。   Then, the opening side peripheral edge portion of the standing wall 38 is fitted into the peripheral wall 48 of the mounting plate 40, the restriction piece 39 is inserted into the restriction piece insertion hole 47h, and the other portion of the opening side peripheral edge portion of the standing wall 38 is the circular plate portion 42. It is made to contact with the inner surface. Then, the restricting piece 39 protrudes to a position on the outer peripheral side of the arcuate bent portion 62a of the locking body 60 in the mounting plate 40. As a result, the restricting piece 39 is disposed at a position where it can contact the outer peripheral side portion of the arc-shaped bent portion 62a, and at least one side in the longitudinal direction of the linear portion 61 of the locking body 60 (here, the locking portion From the side opposite to the direction in which the body 60 is inserted, the retaining body 60 is prevented from being removed.

また、上記規制片挿通孔47hの周縁部にはカバー固定片47haが突設されている。ここでは、規制片挿通孔47hの外周側の長手方向中間部にカバー固定片47haが突設されている。また、規制片39が規制片挿通孔47hに挿通された状態で、カバー固定片47haと対応する位置にカバー固定孔39hが形成されている。上記のように規制片39が規制片挿通孔47hに挿通された状態で、カバー固定片47haがカバー固定孔39h内に配設されることで、カバー36と取付プレート40との固定が行われる。なお、本実施形態では、3つの規制片39の他に、当該規制片39と同様構成のカバー固定片39dが設けられている。また、取付プレート40のうちカバー固定片39dに対応する位置に、規制片挿通孔47hと同様構成のカバー固定片挿通孔47dが形成されている(図7、図8等参照)。このカバー固定片39dも、カバー36と取付プレート40とを固定する役割を有している。なお、カバー36と取付プレート40との固定は、その他、ねじ止、リベット固定等によって行われてもよい。   Further, a cover fixing piece 47ha projects from the peripheral edge of the restriction piece insertion hole 47h. Here, a cover fixing piece 47ha is projected from the longitudinal intermediate portion on the outer peripheral side of the restriction piece insertion hole 47h. Further, a cover fixing hole 39h is formed at a position corresponding to the cover fixing piece 47ha in a state where the restricting piece 39 is inserted into the restricting piece insertion hole 47h. The cover 36 and the mounting plate 40 are fixed by the cover fixing piece 47ha being disposed in the cover fixing hole 39h in a state where the restricting piece 39 is inserted into the restricting piece insertion hole 47h as described above. . In the present embodiment, in addition to the three restricting pieces 39, a cover fixing piece 39d having the same configuration as the restricting piece 39 is provided. Further, a cover fixing piece insertion hole 47d having the same configuration as that of the restriction piece insertion hole 47h is formed in the mounting plate 40 at a position corresponding to the cover fixing piece 39d (see FIGS. 7 and 8). The cover fixing piece 39d also has a role of fixing the cover 36 and the mounting plate 40. The cover 36 and the mounting plate 40 may be fixed by screwing, rivet fixing, or the like.

なお、係止体60の挿入方向側への位置規制についても、上記と同様に、立壁38に別途設けられた規制片によって行うようにしてもよい。   Note that the position restriction of the locking body 60 in the insertion direction may be performed by a restriction piece separately provided on the standing wall 38 as described above.

また、規制片39は、必ずしも取付プレート40に形成された規制片挿通孔47hに挿通された状態で位置規制を行う必要はない。規制片が、取付プレートの外周側から取付プレートに対して突出して係止体の位置決めを図るようにしてもよい。また、上記規制片39によって係止体60の抜止めを図る構成は必須ではない。その他の抜止め用の部材を取付プレート40に取付ける等して、係止体60の抜止めを図ってもよい。   Further, it is not always necessary to restrict the position of the restricting piece 39 in a state in which the restricting piece 39 is inserted into the restricting piece insertion hole 47 h formed in the mounting plate 40. The restricting piece may protrude from the outer peripheral side of the mounting plate with respect to the mounting plate so as to position the locking body. In addition, a configuration that prevents the locking body 60 from being removed by the restriction piece 39 is not essential. The retaining member 60 may be prevented from being removed by attaching another retaining member to the attachment plate 40.

上記エアバッグ装置30は次のようにしてステアリングホイール10に取付けられる。   The airbag device 30 is attached to the steering wheel 10 as follows.

すなわち、上記各取付部材22にコイルバネ25が装着されたものを準備する。この際、コイルバネ25の係止端部27を係止突部24に対して取付部材22の基端側より係止させて、コイルバネ25を取付部材22の先端側に突出させないように圧縮状態に維持しておく。   That is, the mounting members 22 provided with the coil springs 25 are prepared. At this time, the locking end 27 of the coil spring 25 is locked to the locking projection 24 from the proximal end side of the mounting member 22, and the coil spring 25 is compressed so as not to protrude toward the distal end side of the mounting member 22. Keep it.

上記状態では、コイルバネ25の先端側に係止突部24が延出している。このため、コイルバネ25が邪魔にならないようにしつつ、係止突部24を取付孔43h内(より具体的には筒部材54内)に挿入することができる。つまり、取付部材22を取付孔43h内に深く挿入するように、エアバッグ装置30をステアリングホイール10に向けてさらに押込む。すると、取付部材22の傾斜面22aが係止体60の直線状部分61に押し当てられる。これにより、直線状部分61がU字状部分62を中心として取付部材22の内側に曲げられる(図28参照)。また、係止突部24に取付部材22の基端側より係止しているコイルバネ25の係止端部27は、取付プレート40に押し当てられ、圧縮変形する。そして、係止体60の直線状部分61が取付部材22の係止突部24を乗越えると、係止体60の直線状部分61が元の取付孔43hを横切る位置に復帰移動し、係止突部24に係止するようになる。また、取付プレート40と取付ベース20との間で圧縮変形したコイルバネ25の弾性力によって、取付プレート40と取付ベース20とが離反方向に付勢される。これにより、取付プレート40と取付ベース20とが離反方向に付勢された状態で、係止体60が係止突部24に取付部材22の基端側より係止し、エアバッグ装置30がステアリングホイール10に対して取付けられる(図26〜図27参照)。   In the above state, the locking projection 24 extends on the tip side of the coil spring 25. For this reason, the latching protrusion 24 can be inserted into the mounting hole 43h (more specifically, into the cylindrical member 54) while preventing the coil spring 25 from interfering. That is, the airbag device 30 is further pushed toward the steering wheel 10 so that the attachment member 22 is inserted deeply into the attachment hole 43h. Then, the inclined surface 22 a of the mounting member 22 is pressed against the linear portion 61 of the locking body 60. Thereby, the linear part 61 is bent inside the attachment member 22 centering on the U-shaped part 62 (refer FIG. 28). The locking end 27 of the coil spring 25 locked to the locking projection 24 from the base end side of the mounting member 22 is pressed against the mounting plate 40 and is compressed and deformed. When the linear portion 61 of the locking body 60 gets over the locking protrusion 24 of the mounting member 22, the linear portion 61 of the locking body 60 moves back to a position crossing the original mounting hole 43h, and It comes to be locked to the stop projection 24. Further, the mounting plate 40 and the mounting base 20 are urged away from each other by the elastic force of the coil spring 25 compressed and deformed between the mounting plate 40 and the mounting base 20. As a result, in a state where the mounting plate 40 and the mounting base 20 are biased away from each other, the locking body 60 is locked to the locking projection 24 from the base end side of the mounting member 22, and the airbag device 30 is It is attached to the steering wheel 10 (see FIGS. 26 to 27).

なお、上記状態で取付ベース20側の固定側接点21は、支持段部44sに対して離れた位置に配設されている。そして、エアバッグ装置30をステアリングホイール10に向けて押込むと、コイルバネ25の付勢力に抗して取付プレート40がステアリングホイール10側に向けて接近移動し、固定側接点21と取付プレート40とが接触する。これにより、固定側接点21を一方側の接点、取付プレート40を他方側の接点とする、ホーン鳴動回路用のスイッチを組込むことができる。すなわち、本エアバッグ装置30がステアリングホイール10に取付けられた状態では、コイルバネ25の付勢力によって固定側接点21と取付プレート40とは非接触状態となっており、両者は非導通状態となっている。この状態で、運転者がカバー36を押すと、コイルバネ25の付勢力に抗して取付プレート40がステアリングホイール10側に押される。これにより、固定側接点21が他方側の接点としての取付プレート40に接触し、両者が導通状態となり、ホーンが鳴動するように構成することができる。   In the above state, the stationary contact 21 on the mounting base 20 side is disposed at a position away from the support step 44s. When the airbag device 30 is pushed toward the steering wheel 10, the mounting plate 40 moves toward the steering wheel 10 against the urging force of the coil spring 25, and the fixed contact 21, the mounting plate 40, Touch. Thereby, the switch for a horn ringing circuit which uses the fixed side contact 21 as a contact on one side and the mounting plate 40 as a contact on the other side can be incorporated. That is, in a state where the airbag device 30 is attached to the steering wheel 10, the stationary contact 21 and the attachment plate 40 are in a non-contact state by the biasing force of the coil spring 25, and both are in a non-conductive state. Yes. When the driver pushes the cover 36 in this state, the mounting plate 40 is pushed toward the steering wheel 10 against the urging force of the coil spring 25. Thereby, it can comprise so that the fixed side contact 21 may contact the attachment plate 40 as a contact on the other side, both will be in a conduction | electrical_connection state, and a horn will sound.

もっとも、この部分にホーンスイッチ構造を組込む必要はなく、カバー36の表面部分にホーンスイッチが組込まれていてもよい。   However, it is not necessary to incorporate a horn switch structure in this portion, and a horn switch may be incorporated in the surface portion of the cover 36.

以上のように構成されたエアバッグ装置30の取付部構造によると、コイルバネ25の胴部26の端部に設けられた係止端部27が、取付部材22の係止突部24に取付部材22の基端側より係止可能に形成されているため、取付部材22を取付孔43hに挿入する前の状態で、コイルバネ25の先端部の係止端部24を係止突部24に係止させておくことができる。従って、取付部材22を取付孔43hに挿入する際に、コイルバネ25が邪魔になり難く、取付部材22を取付孔43h内に容易に挿入できる。また、別観点からいうと、コイルバネ25の係止端部27を取付部材22の係止突部24に係止させる構成としているため、作業容易性の観点から、取付部材22の長さ寸法或はコイルバネ25の長さ寸法を考慮する必要がなくなる。このため、設計自由度が向上し、操作力の観点からのコイルバネ25の長さを設定等が容易となる。   According to the mounting portion structure of the airbag device 30 configured as described above, the locking end portion 27 provided at the end portion of the body portion 26 of the coil spring 25 is attached to the locking protrusion 24 of the mounting member 22. 22 is configured so that it can be locked from the base end side thereof, so that the locking end 24 at the distal end of the coil spring 25 is engaged with the locking projection 24 before the mounting member 22 is inserted into the mounting hole 43h. It can be stopped. Therefore, when the attachment member 22 is inserted into the attachment hole 43h, the coil spring 25 is unlikely to get in the way, and the attachment member 22 can be easily inserted into the attachment hole 43h. From another point of view, since the locking end 27 of the coil spring 25 is locked to the locking protrusion 24 of the mounting member 22, the length dimension of the mounting member 22 or This eliminates the need to consider the length dimension of the coil spring 25. For this reason, the degree of freedom in design is improved, and it is easy to set the length of the coil spring 25 from the viewpoint of operating force.

また、取付部材22を取付孔43h内(より具体的には筒部材54内)に挿入すると、コイルバネ25の先端部は取付孔43hの周囲部分に筒部材54を介して当接して係止突部24から離れ、取付ベース20と取付プレート40との間に圧縮状態で介在配置される。これにより、コイルバネ25が取付ベース20と取付プレート40とを互いに離れる方向に付勢することができ、係止体60と取付部材22との係止状態の維持を実現し、また、上記ホーンをならすためのオンオフスイッチ構成を組込むことが可能となる。   Further, when the mounting member 22 is inserted into the mounting hole 43h (more specifically, into the cylindrical member 54), the tip end portion of the coil spring 25 comes into contact with the peripheral portion of the mounting hole 43h via the cylindrical member 54 to engage the locking projection. It is separated from the portion 24 and is disposed between the mounting base 20 and the mounting plate 40 in a compressed state. As a result, the coil spring 25 can urge the mounting base 20 and the mounting plate 40 in a direction away from each other, and the locking state between the locking body 60 and the mounting member 22 can be maintained. It is possible to incorporate an on / off switch configuration for leveling.

特に、係止端部27は、胴部26の軸方向から視て胴部26の内側を通る部分を含むため、当該部分を係止突部により確実に係止させることができる。そのような係止端部27は、上記実施形態のように、コイルバネ25の先端部を折曲げることで、容易に形成できる。   In particular, since the locking end portion 27 includes a portion that passes through the inside of the trunk portion 26 when viewed from the axial direction of the trunk portion 26, the portion can be reliably locked by the locking projection. Such a locking end 27 can be easily formed by bending the tip of the coil spring 25 as in the above embodiment.

{変形例}
なお、上記実施形態において、係止端部を、胴部26を取付部材22の基端側に押える形状に形成するとよい。これにより、係止端部によってより確実にコイルバネ25が取付部材22の先端側に突出しないように胴部26を押え付けることができる。
{Modification}
In the above embodiment, the locking end portion may be formed in a shape that presses the body portion 26 against the proximal end side of the mounting member 22. Thereby, the trunk | drum 26 can be pressed down so that the coil spring 25 may not more reliably project to the front end side of the attachment member 22 by the latching end part.

より具体的には、図29及び図30に示す第1変形例では、係止端部27に相当する係止端部27Bは、胴部26の内周部を通るように折曲げられている。また、係止端部27Bの先端部27Baが胴部26の外側にはみ出るように延出されている。そして、当該先端部27Baが胴部26を押え込むようになっている。   More specifically, in the first modification shown in FIGS. 29 and 30, the locking end portion 27 </ b> B corresponding to the locking end portion 27 is bent so as to pass through the inner peripheral portion of the body portion 26. . Further, the distal end portion 27Ba of the locking end portion 27B extends so as to protrude outside the body portion 26. And the said front-end | tip part 27Ba presses down the trunk | drum 26. FIG.

これにより、胴部26が係止端部27Bよりもコイルバネ25の先端側に突出することがより確実に抑制される。   Thereby, it is suppressed more reliably that the trunk | drum 26 protrudes in the front end side of the coil spring 25 rather than the latching end part 27B.

また、上記実施形態において、係止端部が取付プレート40に対して安定的に押し当てられるようにするためには、下記のようにするとよい。   Moreover, in the said embodiment, in order to make a latching edge part press stably with respect to the attachment plate 40, it is good to do as follows.

すなわち、図31〜図33に示す第2変形例では、係止端部27に相当する係止端部27Cは、胴部26の内周部を通るように折曲げられた部分27Caを含んでいる。また、係止端部27Cのうち前記部分27Caの手前側の部分27Cbは、胴部26よりも係止突部24の突出方向反対側に偏心されている。すなわち、前記部分27Cbの中心軸X2は、胴部26の中心軸X1よりも係止突部24の突出方向反対側にシフトしている。従って、偏心した部分27Cbが係止突部24の突出方向反対側で取付プレート40に対して筒部材54を介して押し当てられる。これにより、偏心した部分27Cbが取付プレート40に対して筒部材54を介して安定的に押し当てられる。また、部分27Cbは係止突部24の突出方向反対側にシフトするように偏心しているため、取付部材22と部分27Cbとの間にある程度の隙間が形成されている。このため、部分27Caを係止突部24に係止させる際に、前記隙間を小さくするように当該部分27Caを係止突部24の突出方向側に容易に移動させることができ、前記係止作業を容易に行える。   That is, in the second modification shown in FIGS. 31 to 33, the locking end portion 27 </ b> C corresponding to the locking end portion 27 includes a portion 27 </ b> Ca bent so as to pass through the inner peripheral portion of the body portion 26. Yes. In addition, the portion 27Cb on the front side of the portion 27Ca in the locking end portion 27C is eccentric from the trunk portion 26 on the opposite side to the protruding direction of the locking projection 24. That is, the central axis X2 of the portion 27Cb is shifted to the opposite side of the locking projection 24 in the protruding direction from the central axis X1 of the body 26. Accordingly, the eccentric portion 27 </ b> Cb is pressed against the mounting plate 40 via the cylindrical member 54 on the opposite side of the locking projection 24 in the protruding direction. Thereby, the eccentric portion 27Cb is stably pressed against the mounting plate 40 via the cylindrical member 54. Further, since the portion 27Cb is eccentric so as to shift to the opposite side of the protruding direction of the locking projection 24, a certain gap is formed between the mounting member 22 and the portion 27Cb. Therefore, when the portion 27Ca is locked to the locking projection 24, the portion 27Ca can be easily moved to the protruding direction side of the locking projection 24 so as to reduce the gap. Work can be done easily.

また、図34及び図35に示す第3変形例では、係止端部27に相当する係止端部27Dは、胴部26の内周部を通るように折曲げられた部分27Daを含んでいる。また、係止端部27Dのうち前記部分27Daの手前側の部分27Dbは、胴部26よりも係止突部24の突出方向反対側に偏心され、さらに、胴部26よりも大きい曲率半径を描くように曲げられている。   34 and 35, the locking end portion 27D corresponding to the locking end portion 27 includes a portion 27Da bent so as to pass through the inner peripheral portion of the body portion 26. Yes. Further, the portion 27Db on the front side of the portion 27Da of the locking end portion 27D is eccentrically located on the opposite side to the protruding direction of the locking projection 24 with respect to the barrel portion 26, and further has a larger radius of curvature than the barrel portion 26. It is bent to draw.

従って、偏心及び大きい曲率半径に形成されることによって、胴部26より外側にはみ出た部分27Dbが、取付プレート40に対して筒部材54を介して押し当てられる。これにより、部分27Dbが取付プレート40に対して筒部材54を介して安定的に押し当てられる。この場合でも、上記と同様に、部分27Daを係止突部24に係止させる際に、当該部分27Daを係止突部24の突出方向側に容易に移動させることができ、前記係止作業を容易に行える。   Therefore, the portion 27 </ b> Db that protrudes outward from the body portion 26 is pressed against the mounting plate 40 via the cylindrical member 54 by being formed with an eccentricity and a large curvature radius. Thereby, the portion 27Db is stably pressed against the mounting plate 40 via the cylindrical member 54. Even in this case, similarly to the above, when the portion 27Da is locked to the locking projection 24, the portion 27Da can be easily moved to the protruding direction side of the locking projection 24. Can be easily performed.

なお、本第3変形例において、係止端部の少なくとも一部を胴部26に対して偏心させないで当該胴部26よりも大きな曲率半径部分に形成することによっても、係止端部27Dを取付プレート40に対して筒部材54を介して安定的に押し当てることができる。   In the third modification, the locking end portion 27D can also be formed by forming at least a part of the locking end portion at a radius of curvature larger than the barrel portion 26 without decentering the barrel end portion 26. The mounting plate 40 can be stably pressed through the cylindrical member 54.

また、図31において2点鎖線で示すように、前記偏心した部分27Cbと同じ曲率半径で延出している部分27Faによっても、係止突部24に係止させることができる。つまり、係止突部24に係止可能な係止端部は、胴部26の内側を通るように偏心された部分27Faを含む構成であってもよい。   Further, as shown by a two-dot chain line in FIG. 31, the locking projection 24 can be locked by a portion 27Fa extending at the same radius of curvature as the eccentric portion 27Cb. In other words, the locking end portion that can be locked to the locking protrusion 24 may include a portion 27Fa that is eccentric so as to pass through the inside of the body portion 26.

即ち、コイルバネ25の端部を係止突部24に係止させる構成は、コイルバネ25の端部の少なくとも一部を、胴部26の内側を横切るように折曲げた構成、コイルバネ25の端部の少なくとも一部を、胴部26の内側を通るように偏心させた構成、コイルバネ25の端部の少なくとも一部を、胴部26の内側を通るように胴部26よりも小径に形成した構成等の1つの部分又は複数の組合わせ部分を有する構成によって実現することができる。   That is, the configuration in which the end portion of the coil spring 25 is locked to the locking protrusion 24 is a configuration in which at least a part of the end portion of the coil spring 25 is bent so as to cross the inside of the body portion 26, and the end portion of the coil spring 25 At least a portion of the coil spring 25 is eccentric so as to pass through the inside of the body portion 26, and at least a portion of the end of the coil spring 25 is formed with a smaller diameter than the body portion 26 so as to pass through the inside of the body portion 26. Etc., and a configuration having a plurality of combined parts.

また、コイルバネ25の端部により胴部26を押える構成は、コイルバネ25の先端部を、胴部26の外側にはみ出るように延出させた構成等によって実現することができる。   The configuration in which the body portion 26 is pressed by the end portion of the coil spring 25 can be realized by a configuration in which the distal end portion of the coil spring 25 extends so as to protrude outside the body portion 26.

また、コイルバネ25を取付プレート40に対して安定的に押し当てる構成は、コイルバネの端部の少なくとも一部を、胴部26軸心方向から視て胴部26の外側を通るように偏心させる構成、胴部26の軸心方向から視て胴部26の外側を通るように胴部26よりも大径に形成する構成等によって実現することができる。   In addition, the configuration in which the coil spring 25 is stably pressed against the mounting plate 40 is a configuration in which at least a part of the end portion of the coil spring is decentered so as to pass through the outside of the body portion 26 when viewed from the axial direction of the body portion 26. Further, it can be realized by a configuration in which the diameter is larger than that of the body part 26 so as to pass outside the body part 26 when viewed from the axial direction of the body part 26.

また、コイルバネ25の端部を係止突部24に係止させると、係止突部24による偏った押え込みによって、コイルバネ25の基端部が係止突部24の突出方向の反対側に位置ずれする恐れがある(図36の矢符A参照)。そこで、図36に示す第4変形例のように、取付部材22の基端部から係止突部24の突出方向の反対側に離れた位置に、コイルバネ25の基端部の位置規制を行う位置規制突起部90を設けるとよい。   Further, when the end portion of the coil spring 25 is locked to the locking projection 24, the base end portion of the coil spring 25 is positioned on the opposite side of the protruding direction of the locking projection 24 due to uneven pressing by the locking projection 24. There is a risk of displacement (see arrow A in FIG. 36). Therefore, as in the fourth modification shown in FIG. 36, the position of the base end portion of the coil spring 25 is regulated at a position away from the base end portion of the mounting member 22 on the side opposite to the protruding direction of the locking projection 24. A position restricting protrusion 90 may be provided.

ここでは、取付ベース20上であって取付部材22の基端部から係止突部24の突出方向の反対側に、コイルバネ25の直径寸法分離れた位置に、位置規制突起部90が設けられている。位置規制突起部90は、取付部材22側に向けて順次高さ寸法が大きくなる突起形状に形成され、取付部材22の基端部を向く面が、取付部材22の突出方向に沿って延在する当接面90aに形成されている。   Here, the position restricting projection 90 is provided on the mounting base 20 at a position separated from the base end of the mounting member 22 in the protruding direction of the locking projection 24 at the diameter dimension of the coil spring 25. ing. The position restricting protrusion 90 is formed in a protrusion shape whose height dimension gradually increases toward the mounting member 22, and the surface facing the base end of the mounting member 22 extends along the protruding direction of the mounting member 22. The contact surface 90a is formed.

これにより、コイルバネ25の基端部が取付部材22の基端部と外周面と位置規制突起部90との間に挟込まれるように位置規制され、コイルバネ25の基端部の位置ずれが抑制されている。取付部材22を取付孔43hに挿入する際に、コイルバネ25が取付孔43h内(ここでは、筒部材54内)に嵌り込み難く、コイルバネ25を取付ベース20と取付プレート40との間に、より確実に正常姿勢で配設することができる。   As a result, the position of the base end of the coil spring 25 is restricted so that the base end of the coil spring 25 is sandwiched between the base end of the mounting member 22, the outer peripheral surface, and the position restricting projection 90, and displacement of the base end of the coil spring 25 is suppressed. Has been. When the mounting member 22 is inserted into the mounting hole 43h, the coil spring 25 is difficult to fit into the mounting hole 43h (here, the cylindrical member 54). It can be surely arranged in a normal posture.

また、上記実施形態及び変形例において、第2固定部材である取付プレート40に取付部材22が設けられ、第1固定部材である中央部材16に係止体60が支持されてもよい。   Moreover, in the said embodiment and modification, the attachment member 22 is provided in the attachment plate 40 which is a 2nd fixing member, and the latching body 60 may be supported by the center member 16 which is a 1st fixing member.

なお、上記実施形態及び各変形例で説明した各構成は、相互に矛盾しない限り適宜組合わせることができる。   In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

以上のようにこの発明は詳細に説明されたが、上記した説明は、すべての局面において、例示であって、この発明がそれに限定されるものではない。例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。   As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

10 ステアリングホイール
16 中央部材
22 取付部材
23 柱部
24 係止突部
25 コイルバネ
26 胴部
27、27B、27C、27D 係止端部
30 エアバッグ装置
32 エアバッグ
34 インフレータ
36 カバー
40 取付プレート
44 係止体支持部
60 係止体
90 位置規制突起部
DESCRIPTION OF SYMBOLS 10 Steering wheel 16 Central member 22 Mounting member 23 Column part 24 Locking protrusion 25 Coil spring 26 Trunk part 27, 27B, 27C, 27D Locking end part 30 Airbag apparatus 32 Airbag 34 Inflator 36 Cover 40 Mounting plate 44 Locking Body support 60 Locking body 90 Position restricting projection

Claims (9)

エアバッグ装置をステアリングホイールに取付けるためのエアバッグ装置の取付部構造であって、
ステアリングホイール側に設けられた第1固定部材と、
エアバッグと、前記エアバッグを膨張展開可能なインフレータと、折畳まれた前記エアバッグを覆うカバーと、前記エアバッグ、前記インフレータ及び前記カバーが固定される第2固定部材とを有するエアバッグ装置と、
を備え、
前記第1固定部材及び前記第2固定部材の一方側に取付部材が突設され、
前記第1固定部材及び前記第2固定部材の他方側に、前記取付部材を挿入可能な取付孔が形成されると共に、前記取付孔に挿入された前記取付部材に係止可能な係止体が設けられ、
前記取付部材は、前記第1固定部材及び前記第2固定部材の前記一方側より突出する柱部と、前記柱部の先端部に形成された係止突部とを有し、
前記取付部材に、前記取付孔に挿入された前記取付部材に前記係止体が係止した状態で、前記第1固定部材と前記第2固定部材との間に圧縮状態で配置されるコイルバネが外嵌めされ、
前記コイルバネは、前記柱部に外嵌め可能な胴部と、前記胴部の先端側に設けられ、前記係止突部に前記取付部材の基端側から係止可能な部分を含む係止端部とを有する、エアバッグ装置の取付部構造。
An airbag device mounting structure for mounting an airbag device to a steering wheel,
A first fixing member provided on the steering wheel side;
An airbag device comprising: an airbag; an inflator capable of inflating and deploying the airbag; a cover covering the folded airbag; and a second fixing member to which the airbag, the inflator and the cover are fixed. When,
With
A mounting member projects from one side of the first fixing member and the second fixing member,
An attachment hole into which the attachment member can be inserted is formed on the other side of the first fixing member and the second fixing member, and an engaging body that can be engaged with the attachment member inserted into the attachment hole is provided. Provided,
The mounting member has a column portion protruding from the one side of the first fixing member and the second fixing member, and a locking protrusion formed at a tip portion of the column portion,
A coil spring arranged in a compressed state between the first fixing member and the second fixing member in a state where the locking member is locked to the mounting member inserted into the mounting hole. Fitted,
The coil spring includes a barrel portion that can be fitted onto the column portion, and a locking end that is provided on the distal end side of the barrel portion and includes a portion that can be locked to the locking projection from the base end side of the mounting member. A mounting structure for an airbag device, comprising:
請求項1記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を通る部分を含む、エアバッグ装置の取付部構造。
The airbag device mounting portion structure according to claim 1,
The locking end portion includes a portion passing through the inside of the trunk portion as viewed from the axial center direction of the trunk portion.
請求項2記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を横切るように折曲げられた部分を含む、エアバッグ装置の取付部構造。
The airbag device mounting portion structure according to claim 2,
The attachment part structure of an airbag apparatus including the part by which the said latching end part was bent so that the inner side of the said trunk | drum could be crossed seeing from the axial center direction of the said trunk | drum.
請求項2又は請求項3記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の内側を通るように偏心された部分を含む、エアバッグ装置の取付部構造。
The mounting structure of the airbag device according to claim 2 or claim 3,
The attachment portion structure of the airbag device, wherein the locking end portion includes a portion that is eccentric so as to pass through the inside of the trunk portion when viewed from the axial direction of the trunk portion.
請求項1〜請求項4のいずれか1つに記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部を前記取付部材の基端側に押え付ける形状に形成されている、エアバッグ装置の取付部構造。
It is the attachment part structure of the airbag apparatus as described in any one of Claims 1-4,
The attachment part structure of the airbag apparatus, wherein the locking end part is formed in a shape that presses the body part against a base end side of the attachment member.
請求項5記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側にはみ出るように延出された先端部分を含む、エアバッグ装置の取付部構造。
The mounting structure of the airbag device according to claim 5,
The attachment part structure of an airbag apparatus including the front-end | tip part which the said latching end part extended so that it might see outside from the said trunk | drum, seeing from the axial center direction of the said trunk | drum.
請求項1〜請求項6のいずれか1つに記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側を通るように偏心された部分を含む、エアバッグ装置の取付部構造。
It is the attachment part structure of the airbag apparatus as described in any one of Claims 1-6,
The attachment portion structure of the airbag device, wherein the locking end portion includes a portion that is eccentric so as to pass outside the trunk portion as viewed from the axial direction of the trunk portion.
請求項1〜請求項7のいずれか1つに記載のエアバッグ装置の取付部構造であって、
前記係止端部は、前記胴部の軸心方向から視て前記胴部の外側を通るように前記胴部よりも大径に形成された部分を含む、エアバッグ装置の取付部構造。
It is the attachment part structure of the airbag apparatus as described in any one of Claims 1-7,
The attachment portion structure of the airbag device, wherein the locking end portion includes a portion formed to have a larger diameter than the trunk portion so as to pass outside the trunk portion as viewed from the axial direction of the trunk portion.
請求項1〜請求項8のいずれか1つに記載のエアバッグ装置の取付部構造であって、
前記第1固定部材及び前記第2固定部材の前記一方側に、前記取付部材の基端部との間で前記コイルバネの基端部の位置規制を行う位置規制突起部が設けられている、エアバッグ装置の取付部構造。
It is the attachment part structure of the airbag apparatus as described in any one of Claims 1-8,
A position restricting projection for restricting the position of the base end of the coil spring between the first end of the first fixing member and the second fixing member and the base end of the mounting member is provided. Attachment structure of the bag device.
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