JP2011230733A - Airbag device for motorcycle - Google Patents

Airbag device for motorcycle Download PDF

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JP2011230733A
JP2011230733A JP2010105139A JP2010105139A JP2011230733A JP 2011230733 A JP2011230733 A JP 2011230733A JP 2010105139 A JP2010105139 A JP 2010105139A JP 2010105139 A JP2010105139 A JP 2010105139A JP 2011230733 A JP2011230733 A JP 2011230733A
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airbag
door
support member
motorcycle
wall portion
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JP5494195B2 (en
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Kenji Hayakawa
健次 早川
Shigeyuki Suzuki
滋幸 鈴木
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an airbag device for a motorcycle capable of suppressing splash at the time of opening while enabling smooth opening of a door part at the time of protrusion of an airbag, even with such a configuration as the door part covers a wide area back and forth and has a front opening structure.SOLUTION: An airbag device M for a motorcycle includes an airbag 23 which develops and swells upward from a storing part P in the vicinity between two legs of a crew seated on a seat 10, and a support member 59 capable of supporting the front surface side of the airbag 23 when the swelling completes. An airbag cover 68 of synthetic resin which covers the upper part of the support member 59 and the collapsed airbag 23, includes a door part 76 which opens in such a manner that a rear edge side faces the front, with a hinge part 75 arranged in front of the support member 59 as a rotation center at the time of development and swelling of the airbag 23. The door part 76 can abut with a cowl 2 in front of the seat 10 at the time of opening, and a reinforcing part 78 is arranged at the portion abutting with the cowl 2.

Description

本発明は、自動二輪車に搭載されて、衝突時の乗員を保護するためのエアバッグを備えて構成される自動二輪車用エアバッグ装置に関する。   The present invention relates to an airbag apparatus for a motorcycle that is mounted on a motorcycle and includes an airbag for protecting an occupant during a collision.

従来、自動二輪車用エアバッグ装置としては、シートの前端付近であって、シートに着座した乗員の左右の脚部の間付近の収納部位に収納される構成として、この収納部位から上方側へ展開膨張して前方側へ移動する乗員を受け止めるエアバッグと、膨張するエアバッグとともに上昇移動させて膨張完了時のエアバッグの前面側を支持する支持部材と、を備える構成のものがあった(例えば、特許文献1参照)。   2. Description of the Related Art Conventionally, as a motorcycle airbag device, it is deployed near the front end of the seat and in a storage portion between the left and right legs of the occupant seated on the seat, and is expanded upward from the storage portion. There has been a configuration including an airbag that catches an occupant that inflates and moves forward, and a support member that moves upward together with the inflating airbag and supports the front side of the airbag when inflation is completed (for example, , See Patent Document 1).

また、自動二輪車用エアバッグ装置として、折り畳まれたエアバッグの側方から上方にかけてを、合成樹脂製のエアバッグカバーにより覆われる構成として、このエアバッグカバーが、折り畳まれたエアバッグの上方を覆うとともに、エアバッグの展開膨張時に、周囲に形成される破断予定部を破断させつつ、前縁側に配置されるヒンジ部を回転中心として、後縁側を前方に向けるように開く扉部を、備える構成のものもある(例えば、特許文献2参照)。   In addition, as an airbag device for a motorcycle, the airbag cover is configured to be covered with a synthetic resin airbag cover from the side to the upper side of the folded airbag. A cover portion that covers and opens the rear edge side forward with the hinge portion disposed on the front edge side as the rotation center while breaking the expected breakage portion formed around the airbag when the airbag is deployed and inflated. Some have a configuration (see, for example, Patent Document 2).

特許文献1には、エアバッグの外周側を覆うエアバッグカバーは開示されていないが、シートの前端付近に配設される構成であっても、エアバッグを保護するために、エアバッグの外周側をエアバッグカバーにより覆うことが好ましい。そして、この特許文献1のエアバッグ装置では、エアバッグは、乗員の左右の脚部の間から上方に突出する構成であることから、エアバッグの展開膨張時に、開いた扉部が乗員と干渉することを極力抑制するために、扉部を、折り畳まれたエアバッグと支持部材との上面側を全面にわたって覆うとともに、開き時に、後縁側を前方に向けるように前開きで開かせることが望ましい。   Patent Document 1 does not disclose an airbag cover that covers the outer peripheral side of the airbag. However, in order to protect the airbag even if it is configured near the front end of the seat, the outer periphery of the airbag is not disclosed. It is preferable to cover the side with an airbag cover. And in this airbag apparatus of patent document 1, since an airbag is a structure which protrudes upwards from between a passenger | crew's right and left leg parts, the open door part interferes with a passenger | crew at the time of expansion | deployment of an airbag. In order to suppress this as much as possible, it is desirable that the door portion covers the entire upper surface side of the folded airbag and the support member over the entire surface, and at the time of opening, the door portion is opened with the front opening so that the rear edge side is directed forward. .

特開2009−166571公報JP 2009-166571 A 特開2003−252269公報JP 2003-252269 A

しかしながら、特許文献1に記載の自動二輪車用エアバッグ装置は、エアバッグの前方側に、支持部材が配置されていることから、扉部は、支持部材から折り畳まれたエアバッグにかけての前後に広い範囲を覆うこととなる。換言すれば、扉部において、支持部材の前方に配置されて開き時の回転中心となるヒンジ部から開き時の先端(後縁)までの距離が大きくなることから、周囲の破断予定部を破断させつつ開く際の先端側の部位の回転速度が大きく、エアバッグを突出させた後にも、扉部が、さらに先端をヒンジ部に対して回転させるように過度に開く場合があって、扉部が、ヒンジ部の部位で、エアバッグカバーの他の部位から分断されて、飛散する虞れが生じることとなる。   However, in the airbag apparatus for a motorcycle described in Patent Document 1, since the support member is arranged on the front side of the airbag, the door portion is wide in the front and rear direction from the support member to the folded airbag. It will cover the range. In other words, in the door portion, the distance from the hinge portion, which is arranged in front of the support member and serves as the rotation center at the time of opening, to the front end (rear edge) at the time of opening increases, so the surrounding planned fracture portion is broken. The rotation speed of the part on the tip side when opening it is large, and even after the airbag protrudes, the door part may open excessively to further rotate the tip relative to the hinge part. However, at the part of the hinge part, it may be separated from other parts of the airbag cover and may be scattered.

本発明は、上述の課題を解決するものであり、エアバッグの突出時に、前後に広い領域を覆う扉部を前開きで開かせる構成であっても、開き時の飛散を抑制し、かつ、円滑に扉部を開き可能な自動二輪車用エアバッグ装置を提供することを目的とする。   The present invention solves the above-described problems, and when the airbag protrudes, even when the door portion covering a wide area in the front and rear is opened by opening the front, the scattering at the time of opening is suppressed, and An object of the present invention is to provide a motorcycle airbag device that can smoothly open a door.

本発明に係る自動二輪車用エアバッグ装置は、折り畳まれて収納されるとともに、膨張用ガスの流入時、シートに着座した乗員の脚部の間付近の収納部位から上方側へ展開膨張して、前方側へ移動する乗員を受け止め可能に膨張を完了させるエアバッグと、
膨張完了時のエアバッグの前面側を支持可能に、エアバッグの前方側に配置される支持部材と、
を備えて構成されるとともに、
エアバッグの展開膨張時に、支持部材が、収納位置から、エアバッグを支持可能な支持位置まで、上昇移動可能に構成される自動二輪車用エアバッグ装置であって、
収納部位が、合成樹脂製のエアバッグカバーを、備える構成とされ、
エアバッグカバーが、支持部材と折り畳まれたエアバッグとの上方を覆うとともに、エアバッグの展開膨張時に、周囲に形成される破断予定部を破断させつつ、支持部材の前方に配置される前縁側のヒンジ部を回転中心として、後縁側を前方に向けるように開く扉部を、有し、
扉部が、開き時に、シートの前方における自動二輪車の車体側の部材であるカウルに当接可能とされるとともに、カウルと当接する部位に補強部を配設させて構成されていることを特徴とする。
The airbag apparatus for a motorcycle according to the present invention is folded and stored, and when inflated gas flows in, the airbag device expands and expands upward from a storage portion near the occupant's leg seated on the seat, An airbag that can receive an occupant moving to the front side and completes inflation; and
A support member disposed on the front side of the airbag so as to be able to support the front side of the airbag when the inflation is completed;
And configured with
When the airbag is deployed and inflated, the support member is an airbag device for a motorcycle configured to be movable up from a storage position to a support position capable of supporting the airbag,
The storage part is configured to include a synthetic resin airbag cover,
The airbag cover covers the upper part of the support member and the folded airbag, and the front edge side disposed in front of the support member while breaking the planned breakage portion formed around the airbag when the airbag is deployed and inflated Having a door part that opens so that the rear edge side is directed forward, with the hinge part of
When the door is opened, the door is configured to be able to contact a cowl that is a member on the motorcycle body in front of the seat, and a reinforcing portion is provided at a portion that contacts the cowl. And

本発明の自動二輪車用エアバッグ装置では、合成樹脂製のエアバッグカバーが、支持部材と折り畳まれたエアバッグの上方を覆うとともに、エアバッグの展開膨張時に、周囲に形成される破断予定部を破断させつつ、支持部材の前方に配置される前縁側のヒンジ部を回転中心として、後縁側を前方に向けるように開く扉部を、備える構成であるものの、この扉部は、開き時に、シートの前方における自動二輪車の車体側の部材であるカウルに当接可能に構成されている。すなわち、本発明の自動二輪車用エアバッグ装置では、扉部が、シートの前方に配置されるカウルに当たって開きを止められることから、支持部材から折り畳まれたエアバッグにかけての前後に広い範囲を覆う構成であっても、エアバッグの突出後に、過度に開くことを抑制でき、ヒンジ部の部位で、エアバッグカバーの他の部位から分断されることを的確に抑制できる。また、本発明の自動二輪車用エアバッグ装置では、扉部におけるカウルと当接する部位に、補強部が配設されて、カウルと当接する部位の強度を向上させた構成とされていることから、扉部が、カウルと当たって破損することも抑制できる。   In the airbag apparatus for a motorcycle according to the present invention, the airbag cover made of a synthetic resin covers the upper part of the airbag folded up with the support member, and at the time of deployment and inflation of the airbag, a portion to be broken is formed around the airbag. The door portion is configured to include a door portion that opens to turn the rear edge side forward with the hinge portion on the front edge side disposed in front of the support member as a rotation center while being broken. The front side of the motorcycle is configured to be able to contact a cowl that is a member on the vehicle body side of the motorcycle. That is, in the airbag apparatus for a motorcycle according to the present invention, the door is configured to cover a wide range before and after the support member and the folded airbag since the door is prevented from opening by hitting a cowl disposed in front of the seat. Even so, after the airbag protrudes, it can be prevented from opening excessively, and it is possible to accurately prevent the hinge portion from being separated from other portions of the airbag cover. Further, in the airbag apparatus for a motorcycle according to the present invention, the reinforcing portion is disposed at a portion of the door portion that comes into contact with the cowl, and the strength of the portion that comes into contact with the cowl is improved. It is possible to suppress the door portion from being damaged by hitting the cowl.

したがって、本発明の自動二輪車用エアバッグ装置では、エアバッグの突出時に、前後に広い領域を覆う扉部を前開きで開かせる構成であっても、開き時の飛散を抑制し、かつ、円滑に扉部を開かせることができる。   Therefore, in the airbag apparatus for a motorcycle according to the present invention, even when the door covers a wide area in the front and rear directions when the airbag protrudes, the scattering at the time of opening is suppressed and smooth. Can open the door.

また、本発明の自動二輪車用エアバッグ装置において、扉部を、扉本体と、開き前の扉本体から下方に向かって延びる複数のリブと、を備える構成とし、リブを、補強部を構成するとともに、折り畳まれたエアバッグと扉本体との間の隙間を埋めるスペーサを兼用させる構成とすれば、エアバッグの展開膨張時に、膨張するエアバッグがリブの部位を押し上げるようにして、扉部を開かせることとなり、膨張するエアバッグにより扉部を迅速に押し開くことができて、好ましい。   Moreover, in the airbag apparatus for a motorcycle of the present invention, the door portion includes a door main body and a plurality of ribs extending downward from the door main body before opening, and the rib constitutes a reinforcing portion. At the same time, if it is configured to also serve as a spacer that fills the gap between the folded airbag and the door body, when the airbag is deployed and inflated, the inflating airbag pushes up the rib part, This is preferable because the door can be quickly opened by the inflating airbag.

さらに、上記構成の自動二輪車用エアバッグ装置において、リブを、扉部の開き前の状態において、支持部材の上方を覆う領域まで延びるように形成させるとともに、下面側に、支持部材の上方を覆う部位からスペーサの兼用部位まで、なだらかに連なるような滑り面を、配設させる構成とすれば、一旦開いた扉部が、カウルに当たった後にリバウンドして、上昇移動する支持部材の上方に被るように、支持部材に干渉することとなっても、支持部材が、リブと扉本体との境界部位に引っ掛かって上昇移動を阻害されることを抑制できる。そのため、支持部材が、リブに形成される滑り面に沿って、扉部を前方移動させつつ、上昇移動することから、支持部材を円滑に上昇移動させることができて、好ましい。   Furthermore, in the motorcycle airbag device having the above-described configuration, the rib is formed so as to extend to a region covering the upper portion of the support member in a state before the door portion is opened, and the upper surface of the support member is covered on the lower surface side. If the sliding surface that is gently connected from the part to the part where the spacer is used is arranged, the door part that has been opened once rebounds after hitting the cowl and covers the support member that moves upward. Thus, even if it interferes with the support member, the support member can be prevented from being caught by the boundary portion between the rib and the door main body and hindering the upward movement. Therefore, the support member moves upward while moving the door portion forward along the sliding surface formed on the rib, which is preferable because the support member can be smoothly moved upward.

本発明の一実施形態である自動二輪車用エアバッグ装置を搭載した自動二輪車の側面図である。1 is a side view of a motorcycle equipped with a motorcycle airbag device according to an embodiment of the present invention. 図1の自動二輪車の平面図である。Fig. 2 is a plan view of the motorcycle shown in Fig. 1. 実施形態のエアバッグ装置の前後方向に沿った概略部分拡大縦断面図である。It is a general | schematic partial expansion longitudinal cross-sectional view along the front-back direction of the airbag apparatus of embodiment. 実施形態のエアバッグ装置を前方から見た概略正面図である。It is the schematic front view which looked at the airbag apparatus of embodiment from the front. 実施形態のエアバッグ装置に使用するエアバッグを、リテーナを内部に配置させた状態で単独で膨張させた状態を示す概略斜視図である。It is a schematic perspective view which shows the state which independently inflated the airbag used for the airbag apparatus of embodiment in the state which has arrange | positioned the retainer inside. 図5のエアバッグを構成する構成材料を平らに展開して並べた平面図である。FIG. 6 is a plan view in which constituent materials constituting the airbag of FIG. 5 are flatly developed and arranged. 実施形態のエアバッグ装置に使用するエアバッグカバーを後方側から見た概略斜視図である。It is the schematic perspective view which looked at the airbag cover used for the airbag apparatus of embodiment from the back side. 図7のエアバッグカバーの底面図である。It is a bottom view of the airbag cover of FIG. 図8のIX−IX部位の断面図である。It is sectional drawing of the IX-IX site | part of FIG. 図8のX−X部位の断面図である。It is sectional drawing of the XX site | part of FIG. 実施形態のエアバッグ装置の作動当初を説明する図であり、前後方向に沿った概略縦断面図である。It is a figure explaining the operation | movement initial stage of the airbag apparatus of embodiment, and is a schematic longitudinal cross-sectional view along the front-back direction. 実施形態のエアバッグ装置において、エアバッグが膨張を完了させた状態を示す前後方向に沿った概略縦断面図である。In the airbag apparatus of embodiment, it is a schematic longitudinal cross-sectional view along the front-back direction which shows the state which the airbag completed inflation. 実施形態のエアバッグ装置の作動当初において、一旦開いた扉部がカウルに当たってリバウンドした状態を説明する前後方向に沿った概略縦断面図である。It is a schematic longitudinal cross-sectional view along the front-back direction explaining the state which the door part once opened at the beginning of the action | operation of the airbag apparatus of embodiment hits the cowl, and rebounded.

以下、本発明の一実施形態を図面に基づいて説明すると、実施形態の自動二輪車用エアバッグ装置(以下、単にエアバッグ装置とする)Mは、図1,2に示すように、スクータ型の自動二輪車(以下、単に二輪車という)Bに搭載されるものである。二輪車Bは、図1,2に示すように、乗員Dの着座するシート10と、シート10の前方に配置されるハンドル8と、シート10の左右両側に配置されて乗員Dの足部Fを載せるステップ9,9と、を備える構成とされている。実施形態の二輪車Bでは、乗員Dは、シート10を跨ぐように着座して、左右のステップ9,9に足部Fを載せつつ、二輪車Bを運転することとなる。そして、実施形態の二輪車Bでは、エアバッグ装置Mは、図2に示すように、シート10の前側に隣接して、配設されている。具体的には、エアバッグ装置Mは、シート10に着座してステップ9,9に足部Fを載せるようにして開いている乗員Dの脚部L,L間付近の部位に、配設されている。また、二輪車Bにおけるシート10の前方(エアバッグ装置Mの前方)におけるハンドル8のグリップ8a,8a間の車体(ボディ1)側の部位には、後方に突出するようなカウル2が、配置されている(図1及び図3の二点鎖線参照)。このカウル2は、シート10の前方において、図示しないハンドルポストの後方を覆うボディ1側の部材であり、実施形態の二輪車Bでは、図示しない計器盤の下方において、左右の中央を後方に突出させるように、形成されている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An airbag apparatus for a motorcycle (hereinafter simply referred to as an airbag apparatus) M of the embodiment is a scooter type as shown in FIGS. It is mounted on a motorcycle (hereinafter simply referred to as a motorcycle) B. As shown in FIGS. 1 and 2, the motorcycle B has a seat 10 on which the occupant D is seated, a handle 8 that is disposed in front of the seat 10, and a foot F of the occupant D that is disposed on both left and right sides of the seat 10. Steps 9 and 9 to be placed are provided. In the motorcycle B of the embodiment, the occupant D sits so as to straddle the seat 10 and drives the motorcycle B while placing the foot F on the left and right steps 9 and 9. And in the two-wheeled vehicle B of embodiment, the airbag apparatus M is arrange | positioned adjacent to the front side of the sheet | seat 10, as shown in FIG. Specifically, the airbag apparatus M is disposed at a position in the vicinity of the legs L of the occupant D that is open so as to sit on the seat 10 and place the foot F on the steps 9 and 9. ing. Further, a cowl 2 that protrudes rearward is disposed at a position on the vehicle body (body 1) side between the grips 8a and 8a of the handle 8 in front of the seat 10 in the motorcycle B (in front of the airbag apparatus M). (See the two-dot chain line in FIGS. 1 and 3). The cowl 2 is a member on the body 1 side that covers the rear of a handle post (not shown) in front of the seat 10. In the two-wheeled vehicle B of the embodiment, the center of the left and right is protruded rearward under the instrument panel (not shown). So that it is formed.

なお、本願の明細書等での前後左右の方向は、前進時の二輪車Bを基準としており、二輪車Bに着座した乗員Dの前後左右の方向と一致するものである。   Note that the front-rear and left-right directions in the specification and the like of the present application are based on the two-wheeled vehicle B at the time of forward movement, and coincide with the front-rear, left-right directions of the passenger D seated on the two-wheeled vehicle B.

エアバッグ装置Mは、図3,4に示すように、エアバッグ23と、エアバッグ23に膨張用ガスを供給するインフレーター18と、折り畳まれたエアバッグ23を収納して保持するとともにインフレーター18を保持するケース13と、膨張完了時のエアバッグ23の前面24c側を支持する支持部材59と、支持部材59とエアバッグ23との外周側を覆うエアバッグカバー68と、を備える構成とされている。なお、実施形態の場合、エアバッグ装置Mは、図2,3に示すように、シート10の前側であって、シート10に着座した乗員Dの脚部L間の部位において、エアバッグカバー68の後述する天井壁部73の部位を外部に露出させるようにして、二輪車Bに搭載されている。また、実施形態では、エアバッグ装置Mの左右の側方は、シート10によって覆われている(図1参照)。   As shown in FIGS. 3 and 4, the airbag apparatus M stores and holds the airbag 23, the inflator 18 that supplies the inflation gas to the airbag 23, and the folded airbag 23, and also holds the inflator 18. The holding case 13, a support member 59 that supports the front surface 24c side of the airbag 23 when inflation is completed, and an airbag cover 68 that covers the outer peripheral side of the support member 59 and the airbag 23 are provided. Yes. In the case of the embodiment, as shown in FIGS. 2 and 3, the airbag device M is the front side of the seat 10, and at the portion between the legs L of the occupant D seated on the seat 10. Is mounted on the two-wheeled vehicle B so that a portion of a ceiling wall portion 73 described later is exposed to the outside. In the embodiment, the left and right sides of the airbag apparatus M are covered with the seat 10 (see FIG. 1).

ケース13は、図3に示すように、折り畳まれたエアバッグ23を収納する収納部位Pを構成するもので、実施形態の場合、上方を開口させた板金製の箱形状として、長方形板状の底壁部14と、底壁部14の外周縁付近から上方に延びる略四角筒形状の周壁部15と、を備えて構成されている。底壁部14には、インフレーター18の本体部18aを下方から挿入させる円形の開口14aが、形成されている。このケース13には、図示しない連結ブラケットが配設され、この連結ブラケットを、二輪車Bのボディ(車体)1側のフレーム4から延びるブラケット5に連結させることにより、ケース13が、ボディ1側に連結されている。また、ケース13の周壁部15において左右に配置される領域には、図示しない押えプレートを利用してケース13とエアバッグカバー68と連結させるための、図示しない突起部が、形成されている。さらに、ケース13における底壁部14には、周壁部15より後方に突出した部位の上面側に、エアバッグ23の後面における下部側に設けた規制ベルト50の先端(下端)50bを固定する固定杆16が、配設されている。   As shown in FIG. 3, the case 13 constitutes a storage part P that stores the folded airbag 23. In the case of the embodiment, the case 13 is a rectangular plate-shaped box-shaped box that opens upward. The bottom wall portion 14 and a peripheral wall portion 15 having a substantially rectangular tube shape extending upward from the vicinity of the outer peripheral edge of the bottom wall portion 14 are configured. The bottom wall portion 14 is formed with a circular opening 14a into which the main body portion 18a of the inflator 18 is inserted from below. The case 13 is provided with a connection bracket (not shown). By connecting the connection bracket to a bracket 5 extending from the frame 4 on the body (vehicle body) 1 side of the motorcycle B, the case 13 is moved to the body 1 side. It is connected. Further, in a region disposed on the left and right sides of the peripheral wall portion 15 of the case 13, a projection portion (not shown) for connecting the case 13 and the airbag cover 68 using a press plate (not shown) is formed. Further, the bottom wall portion 14 of the case 13 is fixed to fix the front end (lower end) 50 b of the regulation belt 50 provided on the lower side of the rear surface of the airbag 23 on the upper surface side of the portion protruding rearward from the peripheral wall portion 15. A trough 16 is provided.

インフレーター18は、図3に示すように、上部側に複数のガス吐出口18bを備えた円柱状の本体部18aと、本体部18aの外周面から突出するフランジ部18cと、を備えて構成され、フランジ部18cが、エアバッグ23の流入用開口25a周縁をケース13に取り付けるためのリテーナ19を利用して、ケース13の底壁部14の下面側に固定されている。   As shown in FIG. 3, the inflator 18 includes a cylindrical main body portion 18a having a plurality of gas discharge ports 18b on the upper side, and a flange portion 18c protruding from the outer peripheral surface of the main body portion 18a. The flange portion 18 c is fixed to the lower surface side of the bottom wall portion 14 of the case 13 by using a retainer 19 for attaching the periphery of the inflow opening 25 a of the airbag 23 to the case 13.

リテーナ19は、図3,5に示すように、四隅にボルト19aを備えた略四角環状とされるもので、エアバッグ23の後述するバッグ本体24の内部において、流入用開口25aの周縁に、ボルト19aを突出させた状態で配置されている。そして、このバッグ本体24の流入用開口25aの周縁から突出しているボルト19aを、ケース13の底壁部14及びインフレーター18のフランジ部18cに貫通させて、ナット20止めすることにより、インフレーター18のフランジ部18cが、エアバッグ23とともに、ケース13の底壁部14に対して固定されている。   As shown in FIGS. 3 and 5, the retainer 19 has a substantially square ring shape with bolts 19 a at the four corners. In the bag body 24, which will be described later of the airbag 23, on the periphery of the inflow opening 25 a, It arrange | positions in the state which protruded the volt | bolt 19a. Then, the bolt 19a protruding from the peripheral edge of the inflow opening 25a of the bag body 24 is passed through the bottom wall portion 14 of the case 13 and the flange portion 18c of the inflator 18, and the nut 20 is fixed, whereby the inflator 18 is The flange portion 18 c is fixed to the bottom wall portion 14 of the case 13 together with the airbag 23.

また、インフレーター18は、図示しないリード線によって、二輪車Bに搭載された図示しない制御回路に電気的に接続されている。そして、二輪車Bに衝撃が作用した際に、制御回路が、衝撃を検知した所定の検知センサからの信号を入力して、インフレーター18に作動信号を出力することとなる。   The inflator 18 is electrically connected to a control circuit (not shown) mounted on the motorcycle B by a lead wire (not shown). When an impact is applied to the two-wheeled vehicle B, the control circuit inputs a signal from a predetermined detection sensor that detects the impact, and outputs an operation signal to the inflator 18.

支持部材59は、チタン等の軽量な金属製として、図3,4に示すように、エアバッグ23の前方となるケース13の前方に、配設されている。実施形態の場合、支持部材59は、上下方向に延びる1本の四角筒形状の縦材部60(縦杆部)と、縦材部60の上端60aで左右方向に延びる横材部61(横杆部)と、を備えて構成されている。横材部61は、縦材部60の上下方向に延びた軸心VCDと直交する方向に沿って左右に延びるように構成されている。縦材部60は、摺動しつつ上昇移動可能に、ケース13の前方に配置される案内部材65に、保持されている。また、横材部61は、円筒状のパイプ材から形成されて、図3に示すように、左右方向に延びる軸心LCDを、縦材部60の軸心VCDより若干後方にオフセットさせるようにして、左右の中央付近を、縦材部60の上端60aに固着されている。すなわち、横材部61は、図4に示すように、縦材部60の上端60aに結合される中央部61cと、中央部61cから左右両側に延びる左右対称形の左側部61a,右側部61bと、を備えて構成されている。左側部61aと右側部61bとには、前面側に、前後方向に貫通するねじ孔からなる締結孔63が、形成されている。各締結孔63には、エアバッグ23における連結ベルト39の先端45を横材部61の左側部61aと右側部61bとに固着させるためのボルト48が、締結されることとなる。   As shown in FIGS. 3 and 4, the support member 59 is made of a lightweight metal such as titanium, and is disposed in front of the case 13 in front of the airbag 23. In the case of the embodiment, the support member 59 includes a single rectangular tube-shaped vertical member 60 (vertical hook) extending in the vertical direction and a horizontal member 61 (horizontal) extending in the left-right direction at the upper end 60 a of the vertical member 60. ). The cross member 61 is configured to extend left and right along a direction orthogonal to the axial center VCD extending in the vertical direction of the vertical member 60. The vertical member 60 is held by a guide member 65 disposed in front of the case 13 so as to be able to move upward while sliding. Further, the cross member 61 is formed of a cylindrical pipe material, and as shown in FIG. 3, the axial center LCD extending in the left-right direction is offset slightly rearward from the axial center VCD of the vertical member 60. Thus, the vicinity of the left and right centers is fixed to the upper end 60 a of the vertical member 60. That is, as shown in FIG. 4, the cross member portion 61 includes a central portion 61 c coupled to the upper end 60 a of the vertical member portion 60, and left and right symmetrical left and right portions 61 a and 61 b extending from the central portion 61 c to the left and right sides. And is configured. A fastening hole 63 formed of a screw hole penetrating in the front-rear direction is formed on the front side of the left side 61a and the right side 61b. A bolt 48 for fixing the tip 45 of the connecting belt 39 in the airbag 23 to the left side 61a and the right side 61b of the cross member 61 is fastened to each fastening hole 63.

なお、支持部材59の縦材部60と横材部61とには、強度を確保できる範囲で、一層の軽量化を図れるように、適宜、複数の肉盗み孔を設けてもよい。また、案内部材65は、図3,4に示すように、支持部材59の縦材部60を挿通可能に、断面略四角形状に開口した挿通路65aを上下に貫通させて構成されるもので、この挿通路65aの領域に図示しないベアリングを配置させて、縦材部60を、上下に円滑に摺動可能に保持させる構成とされている。この案内部材65は、図示しない連結ブラケット等を利用して、ボディ1側のフレーム4から延びるブラケット6や、ケース13の周壁部15に、固定されている。   The vertical member 60 and the horizontal member 61 of the support member 59 may be appropriately provided with a plurality of meat stealing holes so that the weight can be further reduced as long as the strength can be secured. As shown in FIGS. 3 and 4, the guide member 65 is configured by vertically penetrating an insertion passage 65 a opened in a substantially square cross section so that the longitudinal member 60 of the support member 59 can be inserted. Further, a bearing (not shown) is disposed in the region of the insertion passage 65a to hold the longitudinal member 60 so that it can slide smoothly up and down. The guide member 65 is fixed to the bracket 6 extending from the frame 4 on the body 1 side and the peripheral wall portion 15 of the case 13 using a connection bracket (not shown).

また、支持部材59は、左右方向の幅寸法を、収納位置WPから、乗員Dの左右の脚部L間を経て、上方に突出可能に、設定されている。また、支持部材59は、図12に示すように、上方への突出を完了させた位置、すなわち、エアバッグ23を支持可能な支持位置(引き上げ完了位置)SPに配置された状態で、上端59a側に位置する横材部61と縦材部60の上端60a側の領域とにより、膨張を完了させたエアバッグ23(バッグ本体24)の上部24aの前面側を支持でき、かつ、後面59bを、エアバッグ23(バッグ本体24)によって覆われるように、構成されている。なお、支持部材59には、支持位置SPに配置された際の位置決め用に、フレーム4や案内部材65等に当接して位置規制される図示しないストッパが、配設されている。   Further, the support member 59 is set such that the width dimension in the left-right direction can protrude upward from the storage position WP through the left and right leg portions L of the occupant D. Further, as shown in FIG. 12, the support member 59 is disposed at a position where the upward protrusion is completed, that is, at a support position (lifting completion position) SP capable of supporting the airbag 23, and at the upper end 59a. The front side of the upper part 24a of the airbag 23 (bag main body 24) that has been inflated can be supported by the cross member 61 located on the side and the region on the upper end 60a side of the vertical member 60, and the rear face 59b The air bag 23 (bag body 24) is configured to be covered. The support member 59 is provided with a stopper (not shown) that is positioned so as to abut against the frame 4 and the guide member 65 for positioning when the support member 59 is disposed at the support position SP.

エアバッグ23は、折り畳まれてケース13内に収納されるもので、実施形態の場合、図5に示すように、内部に膨張用ガスを流入させて膨張する袋状のバッグ本体24と、支持部材59を引き上げるための連結ベルト39と、バッグ本体24の後面24d側の下部に配置される規制ベルト50と、を備えて構成されている。実施形態の場合、折り畳まれたエアバッグ23(折り完了体82)は、図3に示すように、上面82aを、ケース13の周壁部15より上方に位置させるようにして、ケース13内に収納されている。また、実施形態の場合、ケース13内に収納される折り完了体82は、上面82aを、収納位置WPの支持部材59よりも上方に位置させている。   The airbag 23 is folded and stored in the case 13. In the case of the embodiment, as shown in FIG. 5, as shown in FIG. The connecting belt 39 for pulling up the member 59 and the regulating belt 50 disposed at the lower part on the rear surface 24d side of the bag body 24 are provided. In the case of the embodiment, the folded airbag 23 (folding completion body 82) is housed in the case 13 with the upper surface 82a positioned above the peripheral wall portion 15 of the case 13, as shown in FIG. Has been. In the case of the embodiment, the folding completion body 82 housed in the case 13 has the upper surface 82a positioned above the support member 59 at the housing position WP.

バッグ本体24は、図5に示すように、略正方形状の底壁部25と、底壁部25の外周縁から上方に延びる略四角筒形状の周壁部26と、底壁部25の上方で底壁部25と対向して配置される天井壁部29と、から構成されている。周壁部26は、バッグ本体24の前面24c側を構成する前壁部27と、バッグ本体24の後面24d側を構成する後壁部28と、から構成されている。前壁部27と後壁部28とは、左右両縁で相互に結合(縫着)されて、周壁部26を構成している。また、天井壁部29は、外周縁を、前壁部27及び後壁部28の上縁に結合(縫着)されている。そして、バッグ本体24は、具体的に説明すれば、膨張完了時における前方側から見た外形形状を、下部24b側より上部24a側の左右方向の幅寸法を大きくした上広がりの略台形形状とするとともに(図4の二点鎖線参照)、膨張完了時における側方から見た外形形状を、下部24b側から上部24a側に向かうにつれて、前後方向の厚さ寸法を増大させるようなテーパ形状として(図12参照)、構成されている。そして、バッグ本体24は、膨張完了時の後面24d側を、乗員Dの上半身を受け止める拘束面37としている。   As shown in FIG. 5, the bag body 24 includes a substantially square bottom wall portion 25, a substantially rectangular tube-shaped peripheral wall portion 26 extending upward from the outer peripheral edge of the bottom wall portion 25, and an upper portion of the bottom wall portion 25. And a ceiling wall portion 29 disposed to face the bottom wall portion 25. The peripheral wall portion 26 includes a front wall portion 27 that forms the front surface 24 c side of the bag main body 24, and a rear wall portion 28 that forms the rear surface 24 d side of the bag main body 24. The front wall portion 27 and the rear wall portion 28 are joined (sewn) to each other at both the left and right edges to constitute the peripheral wall portion 26. The ceiling wall portion 29 has an outer peripheral edge joined (sewn) to the upper edges of the front wall portion 27 and the rear wall portion 28. More specifically, the bag body 24 has a substantially trapezoidal shape in which the outer shape viewed from the front side at the time of completion of the expansion is widened by increasing the width in the left-right direction on the upper portion 24a side from the lower portion 24b side. In addition, (see the two-dot chain line in FIG. 4), the outer shape seen from the side when the expansion is completed is a taper shape that increases the thickness dimension in the front-rear direction as it goes from the lower part 24b side to the upper part 24a side. (See FIG. 12). And the bag main body 24 is using the rear surface 24d side at the time of completion of expansion as a restraint surface 37 for receiving the upper body of the occupant D.

また、実施形態の場合、バッグ本体24は、外周壁を構成するアウタバッグとしての二次膨張バッグ部35と、二次膨張バッグ部35内に配置されるインナバッグとしての一次膨張バッグ部31と、を備えて構成されている。一次膨張バッグ部31と二次膨張バッグ部35とは、底壁部25を共用するように、底壁部25の部位で相互に重ねられている。また、一次膨張バッグ部31は、底壁部25から延びる前壁部31cを、二次膨張バッグ部35の外周壁36の前壁部、すなわち、バッグ本体24の前壁部27、に、結合させて配設されている。実施形態の場合、前壁部31cと前壁部27との相互の結合部位27a,27aは、一次膨張バッグ部31の左右両縁付近で、上下方向に沿わせるように縫合して、形成されている。   In the case of the embodiment, the bag body 24 includes a secondary inflation bag portion 35 as an outer bag constituting the outer peripheral wall, and a primary inflation bag portion 31 as an inner bag disposed in the secondary inflation bag portion 35. , And is configured. The primary inflatable bag portion 31 and the secondary inflatable bag portion 35 are overlapped with each other at the site of the bottom wall portion 25 so as to share the bottom wall portion 25. In addition, the primary inflatable bag portion 31 connects the front wall portion 31 c extending from the bottom wall portion 25 to the front wall portion of the outer peripheral wall 36 of the secondary inflatable bag portion 35, that is, the front wall portion 27 of the bag body 24. Are arranged. In the case of the embodiment, the mutual connecting portions 27a and 27a of the front wall portion 31c and the front wall portion 27 are formed by stitching so as to be along the vertical direction in the vicinity of both left and right edges of the primary inflatable bag portion 31. ing.

バッグ本体24の底壁部25には、膨張用ガスを流入させるための円形の流入用開口25aが形成されており、流入用開口25aの周縁には、リテーナ19の各ボルト19aを挿通させるための取付孔25b(図6参照)が、形成されている。そして、この流入用開口25aの周縁は、上述したごとく、リテーナ19に押えられて、ケース13の底壁部14に取り付けられることとなる(図3参照)。   The bottom wall 25 of the bag body 24 is formed with a circular inflow opening 25a for allowing the inflating gas to flow in, and the bolt 19a of the retainer 19 is inserted through the periphery of the inflow opening 25a. A mounting hole 25b (see FIG. 6) is formed. As described above, the peripheral edge of the inflow opening 25a is pressed by the retainer 19 and attached to the bottom wall portion 14 of the case 13 (see FIG. 3).

実施形態のエアバッグ装置Mでは、バッグ本体24における一次膨張バッグ部31が、支持部材59を引き上げるための駆動源を構成している。一次膨張バッグ部31は、流入用開口25aと取付孔25bとを有した底壁部31aと、底壁部31aの外周縁から上方に延びる周壁部31bと、から構成されている。周壁部31bは、左右両縁と上縁とを相互に結合させた前壁部31cと後壁部31dとから構成されている。この一次膨張バッグ部31は、上述したごとく、前壁部31cの領域を、上下の略全域にわたって、二次膨張バッグ部35の前壁部(バッグ本体24の前壁部27)に結合されるとともに、膨張完了時の高さ寸法を、二次膨張バッグ部35(バッグ本体24)より若干小さくして、構成されている。また、一次膨張バッグ部31の後壁部31dには、バッグ本体24の膨張完了時において、一次膨張バッグ部31の上端から下方に下がった左右方向の中央となる位置に、供給口33が、円形に開口して形成されている。この供給口33は、図11,12に示すように、一次膨張バッグ部31内に流入した膨張用ガスを、二次膨張バッグ部35内に流出させる部位である。そして、この一次膨張バッグ部31では、供給口33の上方の領域が、支持部材59を引き上げるために膨張用ガスを貯留させるガス溜り部34を、形成している。   In the airbag apparatus M of the embodiment, the primary inflation bag portion 31 in the bag main body 24 constitutes a drive source for pulling up the support member 59. The primary inflatable bag portion 31 includes a bottom wall portion 31a having an inflow opening 25a and a mounting hole 25b, and a peripheral wall portion 31b extending upward from the outer peripheral edge of the bottom wall portion 31a. The peripheral wall portion 31b includes a front wall portion 31c and a rear wall portion 31d in which both left and right edges and an upper edge are coupled to each other. As described above, the primary inflatable bag portion 31 is coupled to the front wall portion of the secondary inflatable bag portion 35 (the front wall portion 27 of the bag body 24) over the substantially entire upper and lower regions of the front wall portion 31c. At the same time, the height dimension at the completion of the inflation is slightly smaller than the secondary inflation bag portion 35 (bag body 24). Further, at the rear wall portion 31d of the primary inflatable bag portion 31, the supply port 33 is located at the center in the left-right direction that is lowered downward from the upper end of the primary inflatable bag portion 31 when the inflating of the bag body 24 is completed. A circular opening is formed. As shown in FIGS. 11 and 12, the supply port 33 is a part that causes the inflation gas that has flowed into the primary inflation bag portion 31 to flow out into the secondary inflation bag portion 35. In the primary inflatable bag portion 31, the region above the supply port 33 forms a gas reservoir portion 34 for storing inflation gas in order to pull up the support member 59.

連結ベルト39は、バッグ本体24における前面24cの左右方向の中央の上端側となる天井壁部29の左右方向の中央の前縁29aに、元部端40を連結されている。この連結ベルト39は、バッグ本体24に結合される略正方形板状の元部端40と、元部端40から左右方向に広がりつつ先端側に延びる略台形板状の中間部41と、中間部41から左右に二又状に延びる先端側部位42と、を備えて構成されている。元部端40は、天井壁部29の外表面側の前縁29aに、縫合により、結合されている。先端側部位42は、二股に分かれる分岐部43と、横材部61に固着される二つの先端45,45と、を備え、左右に配置される各先端45には、ボルト48を挿通させる取付孔45aが、左右方向の中央付近に、それぞれ、形成されている。そして、実施形態の場合、連結ベルト39は、各分岐部43を、支持部材59の横材部61の外周面62における後面側に配置させ、分岐部43と先端45との間の部位である巻き付け部44を、横材部61の下面の外周側を覆うように配置させて、横材部61の前面に配置される先端45を、板金製の当て板47とボルト48とを使用して横材部61に固定させることにより、横材部61の周囲に巻き付けられるようにして、配置されることとなる。この連結ベルト39は、全体の長さ寸法を、一次膨張バッグ部31の膨張に伴って、支持部材59を支持位置SPまで引き上げ可能な寸法に、設定されている。   The connecting belt 39 has a base end 40 connected to the front edge 29a in the center in the left-right direction of the ceiling wall portion 29 which is the upper end side in the center in the left-right direction of the front surface 24c of the bag body 24. The connection belt 39 includes a substantially square plate-shaped base portion end 40 coupled to the bag body 24, a substantially trapezoidal plate-shaped intermediate portion 41 extending from the base portion end 40 in the left-right direction and extending to the distal end side, and an intermediate portion. 41, and a distal end side portion 42 extending in a bifurcated shape from side to side. The base end 40 is joined to the front edge 29a on the outer surface side of the ceiling wall portion 29 by sewing. The distal end portion 42 includes a bifurcated branch 43 and two distal ends 45, 45 fixed to the cross member 61, and a bolt 48 is inserted into each distal end 45 disposed on the left and right. A hole 45a is formed in the vicinity of the center in the left-right direction. In the case of the embodiment, the connecting belt 39 is a portion between the branch portion 43 and the tip 45, in which each branch portion 43 is disposed on the rear surface side of the outer peripheral surface 62 of the cross member portion 61 of the support member 59. The winding portion 44 is disposed so as to cover the outer peripheral side of the lower surface of the cross member portion 61, and the tip 45 disposed on the front surface of the cross member portion 61 is used by using a sheet metal contact plate 47 and a bolt 48. By being fixed to the cross member 61, it is arranged so as to be wound around the cross member 61. The entire length of the connecting belt 39 is set such that the support member 59 can be pulled up to the support position SP as the primary inflatable bag portion 31 is inflated.

規制ベルト50は、バッグ本体24の後面24dにおいて左右方向の中央の下端付近に、元部端50aを連結させている。この規制ベルト50は、図3に示すように、先端(下端)50b側を、ケース13の固定杆16に連結させており、バッグ本体24の膨張完了後、後面24d側の拘束面37によって前進移動する乗員Dの上半身Uを受け止めた際、バッグ本体24の流入用開口25aの周縁の後縁側が、捲れるように前進移動して、破損しないように、拘束面37の上方移動を規制するための部材である。   The regulation belt 50 has a base end 50 a connected to the rear surface 24 d of the bag body 24 near the lower end in the center in the left-right direction. As shown in FIG. 3, the regulation belt 50 has a front end (lower end) 50b side connected to the fixing rod 16 of the case 13, and after the bag body 24 is completely inflated, it is moved forward by a restraining surface 37 on the rear surface 24d side. When the upper body U of the moving occupant D is received, the rear edge side of the peripheral edge of the inflow opening 25a of the bag body 24 moves forward so as to curl and restricts the upward movement of the restraint surface 37 so as not to be damaged. It is a member for.

実施形態のエアバッグ23は、図6に示すように、バッグ本体24を構成する第1基布52,第2基布53,第3基布54、連結ベルト用基布55、及び、規制ベルト用基布56、から、構成されている。これらの第1基布52,第2基布53,第3基布54,連結ベルト用基布55,規制ベルト用基布56は、可撓性を有したポリアミド糸やポリエステル糸等からなる織布から、形成されている。第1基布52は、アウタバッグとしての二次膨張バッグ部35の底壁部25、前壁部27、及び、後壁部28を、形成するもので、底壁部25から前後両側に延びるように前壁部27と後壁部28とを配設させて、外形形状を略鼓形状として、構成されている。第2基布53は、外形形状を略楕円形状として、二次膨張バッグ部35の天井壁部29を形成している。第3基布54は、インナバッグとしての一次膨張バッグ部31を形成するもので、底壁部31aから前後両側に延びるように前壁部31cと後壁部31dとを配設させて、外形形状を帯状として構成されている。なお、第1基布52や第3基布54の流入用開口25aの周縁には、補強のための円環状の補強布(図符号省略)を設けてもよい。連結ベルト39は、連結ベルト用基布55を二枚重ねとして、縫合して形成されている。規制ベルト50は、規制ベルト用基布56を二つ折りして、形成されている。   As shown in FIG. 6, the airbag 23 according to the embodiment includes a first base fabric 52, a second base fabric 53, a third base fabric 54, a connecting belt base fabric 55, and a regulation belt that constitute the bag main body 24. The base fabric 56 is comprised. The first base fabric 52, the second base fabric 53, the third base fabric 54, the connecting belt base fabric 55, and the regulating belt base fabric 56 are woven made of flexible polyamide yarn, polyester yarn, or the like. It is formed from cloth. The 1st base fabric 52 forms the bottom wall part 25, the front wall part 27, and the rear wall part 28 of the secondary expansion bag part 35 as an outer bag, and is extended from the bottom wall part 25 to the front-back both sides. In this way, the front wall portion 27 and the rear wall portion 28 are arranged, and the outer shape is configured as a substantially drum shape. The second base fabric 53 has a substantially elliptical outer shape, and forms the ceiling wall portion 29 of the secondary inflatable bag portion 35. The third base fabric 54 forms a primary inflatable bag portion 31 as an inner bag. A front wall portion 31c and a rear wall portion 31d are disposed so as to extend from the bottom wall portion 31a to the front and rear sides, The shape is configured as a band. In addition, you may provide the annular | circular shaped reinforcement cloth (a figure symbol abbreviation) for reinforcement | strengthening in the periphery of the inflow opening 25a of the 1st base cloth 52 or the 3rd base cloth 54. FIG. The connecting belt 39 is formed by stitching together two connecting belt base fabrics 55. The regulation belt 50 is formed by folding a regulation belt base fabric 56 in two.

エアバッグカバー68は、折り畳まれたエアバッグ23を収納する収納部位Pを構成するもので、オレフィン系熱可塑性エラストマー(TPO)等の合成樹脂製とされている。実施形態の場合、エアバッグカバー68は、支持部材59と折り畳まれたエアバッグ23(折り完了体82)との側方から上方にかけてを略全面にわたって覆うように、下面側を開口させた略直方体形状として、構成され、図2,3に示すように、上面側を露出させるようにして、二輪車Bに搭載されている。エアバッグカバー68は、図7〜10に示すように、支持部材59と折り畳まれたエアバッグ23を収納させたケース13との側方を覆う略四角筒形状の周壁部69と、周壁部69の上方の開口を塞ぐように配設される略長方形板状の天井壁部73と、を備えている。実施形態の場合、周壁部69の下端付近には、前後に突出する取付片部70,71が、形成されている。この取付片部70,71は、フレーム4から延びるブラケット5,6にボルト止めされる部位であり、エアバッグカバー68は、この取付片部70,71をブラケット5,6に固定させることにより、ボディ1側に連結されている。周壁部69の下端付近における左右方向側の部位には、略四角形状の開口69aが、形成されている(図7,9,10参照)。この開口69aは、ケース13の周壁部15に形成される図示しない突起部を貫通させるためのもので、周壁部69は、図示しない押えプレートを利用してケース13と連結されている。また、実施形態の場合、天井壁部73は、図3に示すように、隣接されるシート10から連ならせるように、側方から見て、前下がりに傾斜して形成されている。   The airbag cover 68 constitutes a storage part P for storing the folded airbag 23, and is made of a synthetic resin such as an olefin-based thermoplastic elastomer (TPO). In the case of the embodiment, the airbag cover 68 is a substantially rectangular parallelepiped whose lower surface side is opened so as to cover substantially the entire surface from the side to the upper side of the support member 59 and the folded airbag 23 (folded body 82). It is configured as a shape, and is mounted on the motorcycle B so that the upper surface side is exposed as shown in FIGS. As shown in FIGS. 7 to 10, the airbag cover 68 includes a substantially rectangular tubular peripheral wall 69 that covers the side of the support member 59 and the case 13 in which the folded airbag 23 is accommodated, and a peripheral wall 69. A substantially rectangular plate-like ceiling wall portion 73 disposed so as to close the upper opening. In the case of the embodiment, attachment piece portions 70 and 71 protruding in the front-rear direction are formed near the lower end of the peripheral wall portion 69. The attachment pieces 70 and 71 are bolted to the brackets 5 and 6 extending from the frame 4, and the airbag cover 68 is fixed to the brackets 5 and 6 by fixing the attachment pieces 70 and 71 to the brackets 5 and 6. It is connected to the body 1 side. A substantially square-shaped opening 69a is formed in a portion on the left and right direction side in the vicinity of the lower end of the peripheral wall portion 69 (see FIGS. 7, 9, and 10). The opening 69a is for penetrating a projection (not shown) formed on the peripheral wall 15 of the case 13, and the peripheral wall 69 is connected to the case 13 using a pressing plate (not shown). In the case of the embodiment, as shown in FIG. 3, the ceiling wall portion 73 is formed so as to be inclined forward and downward as viewed from the side so as to be connected to the adjacent sheet 10.

天井壁部73には、エアバッグ23の展開膨張時に開く扉部76が、形成されている。扉部76は、支持部材59と折り畳まれたエアバッグ23との上方を覆う構成とされて、支持部材59の前方に位置する前縁76a側を開き時の回転中心となるヒンジ部75として、残りの周縁に、エアバッグ23に押されて破断可能な破断予定部74を、図8〜10に示すように、天井壁部73を裏面(下面)側から連続的に切り欠くようにして、配設させて、開き時に、後縁76b側を前方に向けるように、前開きで開く構成とされている。この扉部76は、外形形状を、開き時に、支持部材59とエアバッグ23とを突出可能な開口を形成可能な大きさに、設定されるとともに、前後方向の長さ寸法を、開いた際に、シート10の前方に配置されるボディ1側のカウル2に当接可能な寸法に、設定されている。詳細に説明すれば、実施形態の場合、扉部76において、開き前の状態で折り畳まれたエアバッグ23の上方を覆っている後側の部位が、開き時に、カウル2に当接することとなる(図11のB参照)。   The ceiling wall portion 73 is formed with a door portion 76 that opens when the airbag 23 is deployed and inflated. The door portion 76 is configured to cover the upper side of the support member 59 and the folded airbag 23, and as a hinge portion 75 serving as a rotation center when the front edge 76a located in front of the support member 59 is opened. As shown in FIGS. 8 to 10, as shown in FIGS. 8 to 10, on the remaining peripheral edge, the planned break portion 74 that can be broken by being pushed by the airbag 23 is continuously cut out from the back surface (lower surface) side, It is arranged and opened at the front opening so that the rear edge 76b faces forward when opening. When the door 76 is opened, the outer shape is set to a size capable of forming an opening through which the support member 59 and the airbag 23 can protrude, and the length in the front-rear direction is opened. Further, the dimension is set so as to be able to come into contact with the cowl 2 on the body 1 side disposed in front of the seat 10. If it demonstrates in detail, in the case of embodiment, in the door part 76, the rear site | part which covers the upper direction of the airbag 23 folded in the state before opening will contact | abut to the cowl 2 at the time of opening. (See B in FIG. 11).

詳細には、エアバッグカバー68の天井壁部73において、扉部76の前後方向の長さ寸法と、前縁76a側のヒンジ部75の配置位置と、は、扉部76の開き時において、カウル2と当接した際の開き角度θ(周囲の天井壁部63との交差角度、図11のB参照)を、90〜180°程度(望ましくは、100〜140°程度)の範囲内とするような長さ寸法及び配置位置に、設定されている。実施形態の場合、扉部76の開き角度θは、110°に設定されている。   Specifically, in the ceiling wall portion 73 of the airbag cover 68, the length dimension in the front-rear direction of the door portion 76 and the arrangement position of the hinge portion 75 on the front edge 76a side are determined when the door portion 76 is opened. The opening angle θ when contacting the cowl 2 (intersection angle with the surrounding ceiling wall 63, see FIG. 11B) is in the range of about 90 to 180 ° (preferably about 100 to 140 °). It is set to such a length dimension and arrangement position. In the case of the embodiment, the opening angle θ of the door portion 76 is set to 110 °.

また、実施形態の場合、扉部76は、図8〜10に示すように、略長方形板状の扉本体77と、開き前の扉本体77から下方に向かって延びる複数のリブ78と、を備えている。扉本体77は、側方から見て前下がりに傾斜するとともに、長手方向を前後方向に略沿わせた略長方形板状とされている。リブ78は、開き時の扉本体77において、カウル2と当接する部位に配設されるもので、扉本体77の強度を補強する補強部を、構成している。詳細には、リブ78は、扉本体77において、折り畳まれたエアバッグ23の上方を覆っている後側部位77bに、形成されている。実施形態の場合、リブ78は、前後方向に沿った薄肉の板状とされるとともに左右方向に沿って複数並設される縦リブ79と、左右方向に沿った薄肉の板状とされるとともに前後方向に沿って複数並設される横リブ80とを交差させるようにして、下面側から見て略格子状に形成されている(図8参照)。また、リブ78(各縦リブ79,横リブ80)は、図3に示すように、折り畳まれたエアバッグ23(折り完了体82)の上方近傍となる位置まで、扉本体77から下方に延びるように、形成されている。すなわち、このリブ78は、扉本体77とエアバッグ23との間の隙間を埋めるスペーサを、兼用している。   In the case of the embodiment, as shown in FIGS. 8 to 10, the door portion 76 includes a substantially rectangular plate-shaped door body 77 and a plurality of ribs 78 extending downward from the door body 77 before opening. I have. The door main body 77 has a substantially rectangular plate shape that inclines forward and downward as viewed from the side, and whose longitudinal direction is substantially along the front-rear direction. The rib 78 is disposed in a portion of the door main body 77 that is in contact with the cowl 2 in the opened state, and constitutes a reinforcing portion that reinforces the strength of the door main body 77. Specifically, the rib 78 is formed in the rear portion 77 b of the door body 77 that covers the upper portion of the folded airbag 23. In the case of the embodiment, the rib 78 has a thin plate shape along the front-rear direction and a plurality of vertical ribs 79 arranged side by side along the left-right direction, and a thin plate shape along the left-right direction. A plurality of horizontal ribs 80 arranged side by side in the front-rear direction are crossed to form a substantially lattice shape when viewed from the lower surface side (see FIG. 8). Further, as shown in FIG. 3, the ribs 78 (the respective vertical ribs 79 and the horizontal ribs 80) extend downward from the door body 77 to a position near the upper side of the folded airbag 23 (folded body 82). So that it is formed. In other words, the rib 78 also serves as a spacer that fills the gap between the door body 77 and the airbag 23.

また、実施形態の場合、リブ78(縦リブ79,横リブ80)は、図3に示すように、支持部材59の上方を覆う領域まで延びるとともに、下面78aを、水平方向に略沿わせるように構成されている。実施形態の場合、このリブ78(縦リブ79,横リブ80)は、前端側の領域において、扉本体77との間に段差を生じさせないように、前下がりに傾斜している扉本体77に対して、前方にかけて収束するように(扉本体77の下面77aに連ならせるように)、形成されている。すなわち、このリブ78(縦リブ79,横リブ80)の下面78aは、水平方向に沿った状態を維持されつつ、支持部材59の上方の領域において、扉本体77の下面77aからなだらかに連なるように、構成されている。そして、実施形態では、このリブ78(縦リブ79,横リブ80)の下面78aが、開き後の扉部76が支持部材59と干渉した際に、支持部材59に対して滑り可能な滑り面SFを、構成している。   In the case of the embodiment, as shown in FIG. 3, the ribs 78 (vertical ribs 79, horizontal ribs 80) extend to a region covering the upper side of the support member 59, and the lower surface 78a is substantially along the horizontal direction. It is configured. In the case of the embodiment, the ribs 78 (vertical ribs 79, horizontal ribs 80) are formed on the door main body 77 that is inclined forward and downward so as not to cause a step with the door main body 77 in the region on the front end side. On the other hand, it forms so that it may converge toward the front (it is connected with the lower surface 77a of the door main body 77). That is, the lower surface 78a of the rib 78 (vertical rib 79, horizontal rib 80) is connected to the lower surface 77a of the door body 77 gently in the region above the support member 59 while maintaining a state along the horizontal direction. It is configured. In the embodiment, the lower surface 78a of the rib 78 (vertical rib 79, horizontal rib 80) is a sliding surface that can slide with respect to the support member 59 when the door 76 after opening interferes with the support member 59. SF is configured.

次に、実施形態のエアバッグ装置Mの二輪車Bへの搭載について説明する。まず、エアバッグ23を製造する。第1基布52と第3基布54とに、予め、流入用開口25aと取付孔25bとを設け、さらに、予め形成しておいた連結ベルト39と規制ベルト50との元部端40,50aを、第2基布53や第1基布52の所定位置に縫着させておく。そして、第3基布54における一次膨張バッグ部31の前壁部31cを、縫合により、第1基布52におけるバッグ本体24の内周面側となる二次膨張バッグ部35の前壁部27に、結合部位27a,27aを設けて結合させ、次いで、第3基布54における一次膨張バッグ部31の前壁部31cと後壁部31dとの外周縁相互を重ねて縫合し、一次膨張バッグ部31を形成しておく。   Next, the mounting of the airbag apparatus M of the embodiment on the motorcycle B will be described. First, the airbag 23 is manufactured. The first base fabric 52 and the third base fabric 54 are provided with inflow openings 25a and attachment holes 25b in advance, and further, the base end 40 of the connection belt 39 and the regulation belt 50 formed in advance. 50 a is sewn to a predetermined position of the second base fabric 53 or the first base fabric 52. And the front wall part 27 of the secondary expansion bag part 35 used as the inner peripheral surface side of the bag main body 24 in the 1st base fabric 52 by sewing the front wall part 31c of the primary expansion bag part 31 in the 3rd base fabric 54. Are joined to each other, and then the outer peripheral edges of the front wall portion 31c and the rear wall portion 31d of the primary inflatable bag portion 31 of the third base fabric 54 are overlapped and stitched together to form a primary inflatable bag. The part 31 is formed.

次いで、第2基布53の外周縁と、第1基布52における一次膨張バッグ部31の前壁部31c及び後壁部31dを構成する各部位の上縁と、を、縫合糸を用いて結合させ、第1基布52における残りの縁部を、縫合糸を用いて結合させる。その後、縫合代がバッグ本体24の外周側に露出しないように、二次膨張バッグ部35の流入用開口25aを利用して、一次膨張バッグ部31を内部に入れながら、二次膨張バッグ部35を反転させれば、エアバッグ23を製造することができる。   Next, the outer peripheral edge of the second base fabric 53 and the upper edges of the portions constituting the front wall portion 31c and the rear wall portion 31d of the primary inflatable bag portion 31 in the first base fabric 52 are used with sutures. The remaining edges of the first base fabric 52 are bonded using a suture. Thereafter, the secondary inflatable bag portion 35 is inserted into the primary inflatable bag portion 31 using the inflow opening 25a of the secondary inflatable bag portion 35 so that the stitching margin is not exposed to the outer peripheral side of the bag body 24. Is reversed, the airbag 23 can be manufactured.

その後、エアバッグ23の内部に、ボルト19aを取付孔25bから外部に突出させるようにして、リテーナ19を挿入した状態で、エアバッグ23を折り畳む。詳細には、エアバッグ23を、ケース13内に収納可能に、前後左右の幅を縮めるように、折り畳み、折り完了体82を形成する。折り完了体82は、折り崩れしないように、破断可能な図示しないラッピング材で包んでおく。なお、連結ベルト39や規制ベルト50は、先端45,50b側を、ラッピング材から突出させるとともに、リテーナ19の各ボルト19aも、ラッピング材から突出させておく。また、エアバッグ23の流入用開口25aも、インフレーター18の本体部18aを挿入可能なように、開口させておく。   Thereafter, the airbag 23 is folded in a state in which the retainer 19 is inserted so that the bolt 19a protrudes from the mounting hole 25b to the inside of the airbag 23. Specifically, the airbag 23 is folded so as to reduce the width of the front, rear, left, and right so that the airbag 23 can be stored in the case 13, and the folded body 82 is formed. The folding completion body 82 is wrapped with a wrapping material (not shown) that can be broken so as not to collapse. The connecting belt 39 and the regulating belt 50 are protruded from the wrapping material at the ends 45 and 50b, and the bolts 19a of the retainer 19 are also protruded from the wrapping material. The inflow opening 25a of the airbag 23 is also opened so that the main body 18a of the inflator 18 can be inserted.

そして、折り畳んだエアバッグ23(折り完了体82)を、各ボルト19aを底壁部14から突出させるようにして、ケース13内に収納させる。その後、各ボルト19aをフランジ部18cから突出させるようにして、ケース13の底壁部14の下方から、インフレーター18の本体部18aを、開口14a,流入用開口25aに挿入させ、フランジ部18cから突出している各ボルト19aにナット20を締結させて、エアバッグ23とインフレーター18とをケース13に取り付ける。次いで、規制ベルト50のループ状の下端(先端)50bを、固定杆16に連結させるとともに、ケース13を、図示しない連結ブラケットを利用して、ブラケット5に取り付け、ボディ1側に固定させる。また、連結ベルト39の左右の先端45を、案内部材65とともにフレーム4側に取り付け済みの支持部材59の横材部61における左側部61aと右側部61bとに、当て板47とボルト48とを用いて、連結させる。   Then, the folded airbag 23 (folded body 82) is housed in the case 13 such that each bolt 19a protrudes from the bottom wall portion 14. Thereafter, the main body portion 18a of the inflator 18 is inserted into the opening 14a and the inflow opening 25a from below the bottom wall portion 14 of the case 13 so that each bolt 19a protrudes from the flange portion 18c. The nuts 20 are fastened to the projecting bolts 19 a to attach the airbag 23 and the inflator 18 to the case 13. Next, the loop-shaped lower end (tip) 50b of the regulation belt 50 is connected to the fixing rod 16, and the case 13 is attached to the bracket 5 using a connection bracket (not shown) and fixed to the body 1 side. Further, the left and right ends 45 of the connecting belt 39 are connected to the left side 61a and the right side 61b of the cross member 61 of the support member 59 already attached to the frame 4 together with the guide member 65, and the contact plate 47 and the bolt 48 are attached. And connect.

その後、エアバッグカバー68を、支持部材59及び折り畳まれたエアバッグ23の上方から被せ、周壁部69の下端付近における左右方向側の部位を、図示しない押えプレートを利用してケース13に連結させる。同時に、周壁部69の前後両側に形成される取付片部70,71を、フレーム4から延びるブラケット5,6にボルト止めして、エアバッグカバー68を、ボディ1側に固定させる。そして、インフレーター18に、所定の作動信号を入力させるリード線を結線するとともに、シート10を装着すれば、エアバッグ装置Mを二輪車Bに搭載することができる。   Thereafter, the airbag cover 68 is covered from above the support member 59 and the folded airbag 23, and the left and right side portions near the lower end of the peripheral wall portion 69 are connected to the case 13 using a pressing plate (not shown). . At the same time, the attachment piece portions 70 and 71 formed on both front and rear sides of the peripheral wall portion 69 are bolted to the brackets 5 and 6 extending from the frame 4 to fix the airbag cover 68 to the body 1 side. The airbag device M can be mounted on the motorcycle B by connecting a lead wire for inputting a predetermined operation signal to the inflator 18 and mounting the seat 10.

実施形態のエアバッグ装置Mでは、二輪車Bが走行時に四輪自動車等と衝突して、インフレーター18が作動すれば、インフレーター18のガス吐出口18bから吐出された膨張用ガスを内部に流入させて膨張するエアバッグ23(バッグ本体24)が、図11のAに示すように、エアバッグカバー68の扉部76を押し開き、シート10に着座した乗員Dの左右の脚部L間の収納部位Pから上方側へ展開膨張して、前方側へ移動する乗員Dの上半身Uを拘束可能に、膨張を完了させることとなる(図12参照)。また、エアバッグ23の上方への突出に伴って、支持部材59も上昇移動することとなり(図11のB参照)、エアバッグ23の膨張完了時には、支持位置SPまで上昇移動した支持部材59が、エアバッグ23の前面24c側を支持することとなる(図12参照)。   In the airbag apparatus M of the embodiment, when the two-wheeled vehicle B collides with a four-wheeled vehicle or the like during traveling and the inflator 18 is activated, the inflation gas discharged from the gas discharge port 18b of the inflator 18 is caused to flow inside. As shown in FIG. 11A, the inflating airbag 23 (bag main body 24) pushes open the door 76 of the airbag cover 68, and the storage site between the left and right legs L of the occupant D seated on the seat 10 Expansion is completed so that the upper body U of the occupant D that expands and inflates from P and moves to the front side can be restrained (see FIG. 12). As the airbag 23 projects upward, the support member 59 also moves upward (see FIG. 11B). When the airbag 23 is completely inflated, the support member 59 that has moved upward to the support position SP is moved. The front surface 24c side of the airbag 23 is supported (see FIG. 12).

詳細に説明すれば、実施形態のエアバッグ装置Mでは、インフレーター18から吐出される膨張用ガスは、まず、一次膨張バッグ部31内に流入することとなり、図11のAに示すように、一次膨張バッグ部31が内部に膨張用ガスGを流入させて膨張して、エアバッグカバー68の扉部76を押し開くこととなる。そして、一次膨張バッグ部31が、扉部76が開いて形成された開口から上方に向かって突出し、このとき、支持部材59も、図11のBに示すように、上方に突出する一次膨張バッグ部31により上方に引き上げられて、扉部76が開いて形成された開口から上昇移動することとなる。この一次膨張バッグ部31は、供給口33の上方の領域のガス溜り部34(図5,11のB参照)を上昇移動させるように、上方へ突出し、支持部材59を支持位置SPまで引き上げることとなる。そして、支持部材59を支持位置SPまで引き上げた後には、一次膨張バッグ部31の供給口33から多量の膨張用ガスGが二次膨張バッグ部35内へ流入し、二次膨張バッグ部35が、後方へ大きく膨らむように膨張して、図12に示すように、エアバッグ23(バッグ本体24)が膨張を完了させることとなる。   More specifically, in the airbag apparatus M of the embodiment, the inflation gas discharged from the inflator 18 first flows into the primary inflation bag portion 31, and as shown in FIG. The inflating bag portion 31 is inflated by flowing the inflating gas G into the inside, and pushes and opens the door portion 76 of the airbag cover 68. The primary inflatable bag portion 31 projects upward from an opening formed by opening the door portion 76. At this time, the support member 59 also projects upward as shown in FIG. 11B. The door 31 is lifted upward by the portion 31 and moves upward from the opening formed by opening the door portion 76. The primary inflating bag portion 31 protrudes upward to raise the gas reservoir 34 (see B in FIGS. 5 and 11) in the region above the supply port 33, and pulls up the support member 59 to the support position SP. It becomes. After the support member 59 is pulled up to the support position SP, a large amount of inflation gas G flows from the supply port 33 of the primary inflation bag portion 31 into the secondary inflation bag portion 35, and the secondary inflation bag portion 35 is Then, the airbag 23 (bag body 24) is completely inflated as shown in FIG.

そして、実施形態のエアバッグ装置Mでは、合成樹脂製のエアバッグカバー68が、支持部材59とエアバッグ23の上方を覆うとともに、エアバッグ23の展開膨張時に、周囲に形成される破断予定部74を破断させつつ、支持部材59の前方に配置される前縁76a側のヒンジ部75を回転中心として、後縁76b側を前方に向けるように開く扉部76を、備える構成であるものの、この扉部76は、開き時に、シート10の前方における二輪車Bの車体(ボディ1)側の部材であるカウル2に当接可能に構成されている。すなわち、実施形態のエアバッグ装置Mでは、扉部76が、図11のB及び図12に示すように、シート10の前方に配置されるカウル2に当たって開きを止められることから、支持部材59から折り畳まれたエアバッグ23にかけての前後に広い範囲を覆う構成であっても、エアバッグ23の突出後に、過度に開くことを抑制でき、ヒンジ部75の部位で、エアバッグカバー68の他の部位(天井壁部73)から分断されることを的確に抑制できる。また、実施形態のエアバッグ装置Mでは、扉部76におけるカウル2と当接する部位に、補強部(リブ78)が配設されて、カウル2と当接する部位(後側部位77b)の強度を向上させた構成とされていることから、扉部76が、カウル2と当たって破損することも抑制できる。   In the airbag apparatus M according to the embodiment, the airbag cover 68 made of synthetic resin covers the support member 59 and the airbag 23, and the portion to be broken is formed around the airbag 23 when the airbag 23 is deployed and inflated. Although it is a structure provided with the door part 76 opened so that the rear edge 76b side may turn to the front centering on the hinge part 75 by the side of the front edge 76a arranged at the front of support member 59, breaking 74, When the door 76 is opened, the door 76 is configured to be able to come into contact with a cowl 2 that is a member on the vehicle body (body 1) side of the two-wheeled vehicle B in front of the seat 10. That is, in the airbag apparatus M according to the embodiment, the door 76 is stopped from hitting the cowl 2 disposed in front of the seat 10 as shown in FIG. 11B and FIG. Even if it is the structure which covers the wide range before and behind over the folded airbag 23, it can suppress opening too much after the airbag 23 protrudes, and it is the site | part of the hinge part 75, and other site | parts of the airbag cover 68 It can suppress exactly that it is divided from (ceiling wall part 73). Further, in the airbag apparatus M of the embodiment, the reinforcing portion (rib 78) is disposed at the portion of the door portion 76 that contacts the cowl 2, and the strength of the portion that contacts the cowl 2 (rear side portion 77b) is increased. Since it is set as the improved structure, it can also suppress that the door part 76 hits the cowl 2 and is damaged.

したがって、実施形態のエアバッグ装置Mでは、エアバッグ23の突出時に、前後に広い領域を覆う扉部76を前開きで開かせる構成であっても、開き時の飛散を抑制し、かつ、円滑に扉部76を開かせることができる。   Therefore, in the airbag device M of the embodiment, even when the door portion 76 that covers a wide area in the front-rear direction is opened by the front opening when the airbag 23 protrudes, scattering at the time of opening is suppressed and smooth. The door 76 can be opened.

また、実施形態のエアバッグ装置Mでは、扉部76が、扉本体77と、開き前の扉本体77から下方に向かって延びる複数のリブ78と、を備え、このリブ78が、補強部を構成するとともに、折り畳まれたエアバッグ23と扉本体77との間の隙間を埋めるスペーサを兼用している。そのため、実施形態のエアバッグ装置Mでは、エアバッグ23の展開膨張時に、膨張するエアバッグ23(バッグ本体24)がリブ78の部位を押し上げるようにして、扉部76を開かせることとなり、膨張するエアバッグ23により扉部76(扉本体77)を迅速に押し開くことができる。勿論、このような点を考慮しなければ、扉部に形成される補強部を、下方に突出するリブから構成しなくともよく、例えば、扉部におけるカウルの当たる領域に、補強部として、板金素材を固着させるような構成としてもよい。   Moreover, in the airbag apparatus M of the embodiment, the door portion 76 includes a door main body 77 and a plurality of ribs 78 extending downward from the door main body 77 before opening, and the rib 78 serves as a reinforcing portion. While constituting, it also serves as a spacer that fills the gap between the folded airbag 23 and the door body 77. Therefore, in the airbag apparatus M of the embodiment, when the airbag 23 is deployed and inflated, the inflating airbag 23 (bag body 24) pushes up the portion of the rib 78 to open the door portion 76. The door part 76 (door main body 77) can be quickly pushed open by the airbag 23 to be performed. Of course, if such a point is not taken into consideration, the reinforcing portion formed on the door portion does not have to be configured by a rib protruding downward, for example, a sheet metal as a reinforcing portion in a region where the cowl hits the door portion. It is good also as a structure which fixes a raw material.

さらに、実施形態のエアバッグ装置Mでは、扉部76に形成されるリブ78が、開き前の状態において、支持部材59の上方を覆う領域まで延びるように形成されるとともに、支持部材59の上方を覆う部位からスペーサの兼用部位(折り畳まれたエアバッグ23の上方に配置される領域)まで、なだらかに連なるような滑り面SFを、有している。詳細に説明すれば、実施形態の場合、リブ78が、縦リブ79と横リブ80とを有して、下面側から見て略格子状に形成されるとともに、下面78aを水平方向に沿わせて、前後方向に対して前下がりで傾斜している扉本体77の前方にかけて収束するように、形成されており、このリブ78の下面78aが、滑り面SFを構成している。そのため、実施形態のエアバッグ装置Mでは、仮に、支持部材59の上昇移動開始が遅れて、図13のAに示すように、一旦開いた扉部76が、カウル2に当たった後にリバウンドして、上昇移動する支持部材59の上方に被るように、支持部材59に干渉する場合があっても、支持部材59が、リブ78と扉本体77との境界部位に引っ掛かって上昇移動を阻害されることを抑制でき、リブ78に形成される滑り面SF(下面78a)に沿って、扉部76を前方移動させつつ、上昇移動することとなって、支持部材59を円滑に上昇移動させることができる(図13のB,C参照)。なお、実施形態では、リブ78は、前端側において扉本体77との間に段差を生じさせないように、扉本体77の前方にかけて収束するように、形成されているが、リブとして、支持部材の上方を覆う領域を備える構成であれば、扉部の開き前の状態において、支持部材の前方となる位置に配置される前端と扉本体との間に段差を有する構成としてもよい。また、勿論、このような点を考慮しなければ、リブを、支持部材の上方を覆う領域まで延設させず、折り畳まれたエアバッグの上方を覆う領域のみに、配設させる構成としてもよい。   Furthermore, in the airbag apparatus M of the embodiment, the rib 78 formed on the door portion 76 is formed so as to extend to a region covering the upper side of the support member 59 in a state before opening, and above the support member 59. From the part which covers the region to the part which also serves as the spacer (the region which is arranged above the folded airbag 23), there is a sliding surface SF which is smoothly connected. More specifically, in the case of the embodiment, the rib 78 includes the vertical rib 79 and the horizontal rib 80, is formed in a substantially lattice shape when viewed from the lower surface side, and the lower surface 78a is aligned along the horizontal direction. The lower surface 78a of the rib 78 forms a sliding surface SF. The lower surface 78a of the rib 78 is formed so as to converge toward the front of the door main body 77 that is inclined forward and downward with respect to the front-rear direction. Therefore, in the airbag apparatus M of the embodiment, the start of the upward movement of the support member 59 is delayed, and the door 76 that has once opened rebounds after hitting the cowl 2 as shown in FIG. Even if the support member 59 may interfere with the support member 59 that moves upward, the support member 59 is caught by the boundary portion between the rib 78 and the door main body 77 to prevent the upward movement. This can be suppressed, and the support member 59 can be smoothly moved up and down by moving upward while moving the door 76 forward along the sliding surface SF (lower surface 78a) formed on the rib 78. Yes (see B and C in FIG. 13). In the embodiment, the rib 78 is formed so as to converge toward the front of the door body 77 so as not to cause a step with the door body 77 on the front end side. If it is the structure provided with the area | region which covers the upper part, it is good also as a structure which has a level | step difference between the front end arrange | positioned in the position used as the front of a supporting member in the state before the door part opens, and a door main body. Of course, if such a point is not taken into consideration, the rib may be disposed only in the region covering the upper portion of the folded airbag without extending to the region covering the upper portion of the support member. .

なお、実施形態では、リブ78が、薄肉状の複数の縦リブと薄肉状の複数の横リブとを交差させた略格子状として、形成されているが、リブの外形形状は、実施形態に限られるものではない。例えば、リブを、前後方向に沿うとともに左右方向側で多数並設される縦リブのみからなる構成としてもよい。また、相互の離隔距離を、支持部材を進入させないような寸法に設定したり、下端側に水平方向に沿って突出するとともに横リブ間の隙間を埋めるようなフランジを配置させる構成とすれば、左右方向に沿うとともに、前後方向側で多数並設される横リブのみから、リブを構成してもよい。   In the embodiment, the rib 78 is formed as a substantially lattice shape in which a plurality of thin-walled vertical ribs and a plurality of thin-walled horizontal ribs are intersected, but the outer shape of the ribs is the same as that of the embodiment. It is not limited. For example, it is good also as a structure which consists only of the vertical rib in which a rib follows the front-back direction and many are arranged in parallel by the left-right direction side. Also, if the distance between each other is set to a dimension that does not allow the support member to enter, or a flange that protrudes along the horizontal direction at the lower end side and fills the gap between the lateral ribs is arranged, You may comprise a rib only from the horizontal rib arranged in parallel with the left-right direction at the front-back direction side.

また、実施形態のエアバッグ装置Mでは、支持部材59を引き上げる駆動源が、エアバッグ23(バッグ本体24)の一次膨張バッグ部31から構成されているが、支持部材を引き上げる駆動源として、エアバッグ及び支持部材と別体の駆動機構を、配置させる構成としてもよい。なお、支持部材を引き上げるための駆動機構を別途配置させる場合、支持部材が上昇移動時に扉部と干渉することを抑制するために、支持部材の上昇移動開始を、エアバッグの膨張開始よりも遅らせるように、駆動を制御する構成のものを使用することが望ましい。   In the airbag apparatus M according to the embodiment, the drive source for lifting the support member 59 is composed of the primary inflating bag portion 31 of the airbag 23 (bag body 24). It is good also as a structure which arrange | positions the drive mechanism separate from a bag and a supporting member. In addition, when arrange | positioning the drive mechanism for raising a support member separately, in order to suppress that a support member interferes with a door part at the time of a raise movement, the rise start of a support member is delayed from the start of inflation of an airbag. Thus, it is desirable to use a configuration that controls driving.

なお、実施形態では、支持部材59として、縦材部60と縦材部60の上端から左右に延びる横材部61とを有して前方から見た外形形状を略T字形状としたものを使用しているが、支持部材の外形形状は実施形態に限られるものではなく、支持部材として、前方から見て略逆U字形状とされるものや、平板状のものを、使用してもよい。   In the embodiment, the support member 59 has a vertical member 60 and a horizontal member 61 extending left and right from the upper end of the vertical member 60, and the outer shape viewed from the front is substantially T-shaped. Although it is used, the outer shape of the support member is not limited to the embodiment, and a support member that has a substantially inverted U shape when viewed from the front or a flat plate may be used. Good.

また、実施形態では、エアバッグ装置Mを、スクータ型の二輪車Bに搭載した場合を示したが、他のスポーツバイクタイプ等の自動二輪車に、本発明のエアバッグ装置を搭載してもよい。   Moreover, although the case where the airbag apparatus M was mounted in the scooter type motorcycle B was shown in the embodiment, the airbag apparatus of the present invention may be mounted on a motorcycle such as another sports bike type.

1…ボディ(車体)、
2…カウル、
10…シート、
13…ケース、
18…インフレーター、
23…エアバッグ、
59…支持部材、
68…エアバッグカバー、
73…天井壁部、
74…破断予定部、
75…ヒンジ部、
76…扉部、
76a…前縁、
76b…後縁、
77…扉本体、
77a…下面、
78…リブ、
78a…下面、
D…乗員、
L…脚部、
P…収納部位、
SF…滑り面、
WP…収納位置、
SP…支持位置、
B…自動二輪車、
M…自動二輪車用エアバッグ装置。
1 ... Body
2 ... Cowl,
10 ... sheet,
13 ... Case,
18 ... Inflator,
23 ... Airbag,
59 ... support member,
68 ... Airbag cover,
73 ... ceiling wall,
74: Planned fracture part,
75 ... Hinge part,
76 ... the door,
76a ... Leading edge,
76b ... trailing edge,
77 ... the door body,
77a ... the lower surface,
78 ... Ribs,
78a ... lower surface,
D ... Crew,
L ... Leg,
P: Storage part,
SF ... Sliding surface,
WP ... Storage position,
SP: Support position,
B ... motorcycle
M: An airbag device for a motorcycle.

Claims (3)

折り畳まれて収納されるとともに、膨張用ガスの流入時、シートに着座した乗員の脚部の間付近の収納部位から上方側へ展開膨張して、前方側へ移動する乗員を受け止め可能に膨張を完了させるエアバッグと、
膨張完了時の前記エアバッグの前面側を支持可能に、前記エアバッグの前方側に配置される支持部材と、
を備えて構成されるとともに、
前記エアバッグの展開膨張時に、前記支持部材が、収納位置から、前記エアバッグを支持可能な支持位置まで、上昇移動可能に構成される自動二輪車用エアバッグ装置であって、
前記収納部位が、合成樹脂製のエアバッグカバーを、備える構成とされ、
該エアバッグカバーが、前記支持部材と折り畳まれた前記エアバッグとの上方を覆うとともに、前記エアバッグの展開膨張時に、周囲に形成される破断予定部を破断させつつ、前記支持部材の前方に配置される前縁側のヒンジ部を回転中心として、後縁側を前方に向けるように開く扉部を、有し、
該扉部が、開き時に、前記シートの前方における自動二輪車の車体側の部材であるカウルに当接可能とされるとともに、該カウルと当接する部位に補強部を配設させて構成されていることを特徴とする自動二輪車用エアバッグ装置。
In addition to being folded and stored, when inflating gas flows in, it expands and expands upward from the storage area near the occupant's legs seated on the seat and expands so that it can receive the occupant moving forward An airbag to be completed;
A support member disposed on the front side of the airbag so as to be able to support the front side of the airbag when the inflation is completed;
And configured with
When the airbag is deployed and inflated, the support member is an airbag device for a motorcycle configured to be movable up from a storage position to a support position capable of supporting the airbag,
The storage part is configured to include a synthetic resin airbag cover,
The airbag cover covers the upper portion of the support member and the folded airbag, and at the front of the support member while breaking the planned breakage portion formed around the airbag when the airbag is deployed and inflated. Having a door portion that opens so that the rear edge side is directed forward, with the hinge portion on the front edge side being arranged as the rotation center,
When the door is opened, the door is configured to be able to contact a cowl, which is a member on the motorcycle body in front of the seat, and a reinforcing portion is provided at a portion that contacts the cowl. An air bag apparatus for a motorcycle characterized by that.
前記扉部が、扉本体と、開き前の前記扉本体から下方に向かって延びる複数のリブと、を備える構成とされ、
前記リブが、前記補強部を構成するとともに、折り畳まれた前記エアバッグと前記扉本体との間の隙間を埋めるスペーサを兼用していることを特徴とする請求項1に記載の自動二輪車用エアバッグ装置。
The door portion is configured to include a door main body and a plurality of ribs extending downward from the door main body before opening,
2. The motorcycle air according to claim 1, wherein the rib serves as a spacer that fills a gap between the folded airbag and the door main body while constituting the reinforcing portion. 3. Bag device.
前記リブが、前記扉部の開き前の状態において、前記支持部材の上方を覆う領域まで延びるように形成されるとともに、下面側に、前記支持部材の上方を覆う部位から前記スペーサの兼用部位まで、なだらかに連なるような滑り面を、配設させて構成されていることを特徴とする請求項2に記載の自動二輪車用エアバッグ装置。   The rib is formed so as to extend to a region covering the upper side of the support member in a state before the door portion is opened, and from the portion covering the upper side of the support member to the combined portion of the spacer on the lower surface side. 3. The airbag apparatus for a motorcycle according to claim 2, wherein a sliding surface that is gently connected is disposed.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011235693A (en) * 2010-05-07 2011-11-24 Toyoda Gosei Co Ltd Airbag device for motorcycle
JPWO2018221178A1 (en) * 2017-06-02 2020-04-23 本田技研工業株式会社 Airbag device for saddle type vehicles

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761310A (en) * 1993-08-30 1995-03-07 Toyoda Gosei Co Ltd Lid material for air bag device
JPH0885406A (en) * 1994-09-16 1996-04-02 Inoac Corp Structure for air bag door for automoible
JP2001114055A (en) * 1999-10-20 2001-04-24 Toyota Motor Corp Air bag device for front passenger seat
JP2003252269A (en) * 2002-03-01 2003-09-10 Honda Motor Co Ltd Small vehicle
JP2003327182A (en) * 2002-03-06 2003-11-19 Honda Motor Co Ltd Air bag device for scooter type motorcycle
JP2007125983A (en) * 2005-11-02 2007-05-24 Toyoda Gosei Co Ltd Airbag device for motorcycle
JP2009166571A (en) * 2008-01-11 2009-07-30 Toyoda Gosei Co Ltd Airbag device for motorcycle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761310A (en) * 1993-08-30 1995-03-07 Toyoda Gosei Co Ltd Lid material for air bag device
JPH0885406A (en) * 1994-09-16 1996-04-02 Inoac Corp Structure for air bag door for automoible
JP2001114055A (en) * 1999-10-20 2001-04-24 Toyota Motor Corp Air bag device for front passenger seat
JP2003252269A (en) * 2002-03-01 2003-09-10 Honda Motor Co Ltd Small vehicle
JP2003327182A (en) * 2002-03-06 2003-11-19 Honda Motor Co Ltd Air bag device for scooter type motorcycle
JP2007125983A (en) * 2005-11-02 2007-05-24 Toyoda Gosei Co Ltd Airbag device for motorcycle
JP2009166571A (en) * 2008-01-11 2009-07-30 Toyoda Gosei Co Ltd Airbag device for motorcycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011235693A (en) * 2010-05-07 2011-11-24 Toyoda Gosei Co Ltd Airbag device for motorcycle
JPWO2018221178A1 (en) * 2017-06-02 2020-04-23 本田技研工業株式会社 Airbag device for saddle type vehicles

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