JP2018043590A - Stopper device of vehicle with frame - Google Patents

Stopper device of vehicle with frame Download PDF

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JP2018043590A
JP2018043590A JP2016178758A JP2016178758A JP2018043590A JP 2018043590 A JP2018043590 A JP 2018043590A JP 2016178758 A JP2016178758 A JP 2016178758A JP 2016178758 A JP2016178758 A JP 2016178758A JP 2018043590 A JP2018043590 A JP 2018043590A
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stopper
vehicle
frame
movable
movable member
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JP6754095B2 (en
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惇 宮前
Atsushi Miyamae
惇 宮前
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Abstract

PROBLEM TO BE SOLVED: To reduce the maximum deceleration of an occupant by enhancing ride-down efficiency at a front face collision of a vehicle.SOLUTION: A stopper device 10 comprises a first stopper 15 fixed to a floor member 12, and a second stopper 16 fixed to a frame 2. In the second stopper 16, a support member 21 is fixed to the frame 2, a movable member 22 is movably supported to the support member 21 in a fore-and-aft direction, and a collar 23, a socket 24 and a fuse bolt 25 hold a position of the movable member 22 with respect to the support member 21 at a first regulation position. After a vehicle 1 collides at a front face, and the movable member 22 of the second stopper 16 in the first regulation position and the first stopper 15 abut on each other, when the deceleration of a body 5 exceeds a threshold K, the holding of the movable member 22 to the first regulation position with respect to the support member 21 is released. The movable member 22 which has arrived at a second regulation position from the first regulation position regulates the movement of the body 5 to a front part with respect to the frame 2 once again.SELECTED DRAWING: Figure 4

Description

本発明は、フレーム付車両のストッパ装置に関する。   The present invention relates to a stopper device for a vehicle with a frame.

特許文献1には、フレームに支持ブラケットを固定し、支持ブラケットにストッパ装置を装備し、ストッパ装置に対向する突出部を車体の下面に設けたフレーム付車両の車体構造が記載されている。ストッパ装置は第1及び第2のストッパ部材を備え、第1のストッパ部材は突出部に対して間隔を有する位置に配設される。車体は、フレームに対してゴム部材等の弾性部材を介して搭載され、通常の走行状態にあっても、車体はフレームに対して水平方向にある程度の距離内で移動する。車両が前面衝突を起こすと、フレームに大きな負の加速度が作用し、車体は慣性力の作用により前方へ移動し、突起部が第1のストッパ部材に衝突する。第1のストッパ部材が車体の慣性力により変形して第2のストッパ部材に当接すると、第2のストッパ部材によって車体の前方への移動が規制される。   Patent Document 1 describes a vehicle body structure of a vehicle with a frame in which a support bracket is fixed to a frame, a stopper device is provided on the support bracket, and a protruding portion facing the stopper device is provided on the lower surface of the vehicle body. The stopper device includes first and second stopper members, and the first stopper member is disposed at a position having an interval with respect to the protruding portion. The vehicle body is mounted on the frame via an elastic member such as a rubber member, and the vehicle body moves within a certain distance in the horizontal direction with respect to the frame even in a normal traveling state. When the vehicle has a frontal collision, a large negative acceleration is applied to the frame, the vehicle body is moved forward by the action of inertial force, and the protrusion collides with the first stopper member. When the first stopper member is deformed by the inertial force of the vehicle body and contacts the second stopper member, the forward movement of the vehicle body is restricted by the second stopper member.

特開平10−338162号公報Japanese Patent Laid-Open No. 10-338162

ところで、乗員がシートベルトで着座シート側に拘束されている場合には、車両の前面衝突時に、慣性による乗員からの力がシートベルト及び着座シートを介して車体側に伝わり、乗員の運動エネルギーの一部が車体の破損エネルギーで消費される。このように、車両の前面衝突時に乗員の運動エネルギーを車体の破損エネルギーで消費させることによって、乗員の傷害値指標の一つである乗員の最大減速度を低減して、乗員の傷害を低減できることが知られている(ライドダウン効果)。   By the way, when the occupant is restrained to the seating seat side by the seat belt, the force from the occupant due to inertia is transmitted to the vehicle body side through the seat belt and the seating seat at the time of the frontal collision of the vehicle, and the kinetic energy of the occupant is A part is consumed by the damage energy of the car body. In this way, the occupant's kinetic energy is consumed by the damage energy of the vehicle body at the time of a frontal collision of the vehicle, thereby reducing the occupant's maximum deceleration, which is one of the occupant's injury value indicators, and reducing the occupant's injury. Is known (ride down effect).

上記特許文献1の構造では、車両が前面衝突時してフレームに対する車体の前方への移動が規制された際、乗員は、シートベルトが効き始めるまで着座シートに対して前方へ移動する。すなわち、シートベルトが効き始めるまでは、車体側の着座シートの速度よりも乗員側の速度の方が高い状態となり、車体と乗員とに速度差が生じている。この速度差が大きいほどシートベルトが効き始めた際のライドダウン効果の効率(ライドダウン効率)が低く、乗員の最大減速度が高くなってしまう可能性がある。   In the structure of Patent Document 1, when the frontal collision of the vehicle restricts the forward movement of the vehicle body relative to the frame, the occupant moves forward with respect to the seating seat until the seat belt starts to work. That is, until the seat belt starts to work, the speed on the occupant side is higher than the speed of the seating seat on the vehicle body side, and a speed difference is generated between the vehicle body and the occupant. The larger the speed difference, the lower the efficiency of the ride down effect (ride down efficiency) when the seat belt starts to work, and the maximum deceleration of the occupant may be increased.

そこで、本発明は、車両の前面衝突時にライドダウン効率を高めて乗員の最大減速度を低減することが可能なフレーム付車両のストッパ装置の提供を目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a frame-equipped vehicle stopper device that can increase ride-down efficiency and reduce the maximum deceleration of an occupant during a frontal collision of the vehicle.

上記課題を解決するため、本発明は、車室の下方を区画するフロア部材がフレームによって弾性支持されるフレーム付車両のストッパ装置であって、第1ストッパと第2ストッパと保持手段とを備える。第1ストッパは、前後方向と交叉する対向面を有し、フレーム又はフロア部材の一方側に固定される。第2ストッパは、第1ストッパの対向面から離間して対向する位置に配置されてフレーム又はフロア部材の他方側に固定される支持部と、支持部と第1ストッパの対向面との間に配置されて支持部に支持される可動部とを有し、可動部が、対向面から離間して対向面との間に可動空間を区画する第1規制位置と、第1規制位置よりも支持部側の第2規制位置との間で、支持部に対して前後方向に移動可能である。保持手段は、車両の通常走行時に、第2ストッパの支持部に対する可動部の位置を第1規制位置に保持する。第1ストッパまたは第2ストッパのうちフロア部材側のストッパは、フレーム側のストッパよりも後方に配置される。可動空間は、第2ストッパと第1ストッパとの相対的な前後方向の移動を許容する。保持手段による支持部に対する可動部の保持は、車両が前面衝突してフロア部材がフレームに対して前方へ移動し、第1規制位置の第2ストッパの可動部と第1ストッパの対向面とが当接した後の所定のタイミングで解除される。第2規制位置の第2ストッパの可動部は、支持部に支持されて、支持部側への第1ストッパの移動を規制する。   In order to solve the above problems, the present invention is a stopper device for a vehicle with a frame in which a floor member defining a lower part of a passenger compartment is elastically supported by a frame, and includes a first stopper, a second stopper, and a holding means. . The first stopper has a facing surface that intersects with the front-rear direction, and is fixed to one side of the frame or the floor member. The second stopper is disposed at a position facing and spaced from the facing surface of the first stopper and is fixed to the other side of the frame or the floor member, and between the supporting portion and the facing surface of the first stopper. A movable part that is disposed and supported by the support part, and the movable part is spaced apart from the opposing surface and defines a movable space between the opposing surface and the first restricting position. It can move in the front-rear direction with respect to the support part between the second restriction position on the part side. The holding means holds the position of the movable portion with respect to the support portion of the second stopper at the first restriction position during normal traveling of the vehicle. Of the first stopper and the second stopper, the stopper on the floor member side is arranged behind the stopper on the frame side. The movable space allows the relative movement of the second stopper and the first stopper in the front-rear direction. The movable portion is held by the holding means with respect to the support portion when the vehicle collides frontward and the floor member moves forward with respect to the frame, and the movable portion of the second stopper at the first restriction position and the opposing surface of the first stopper It is released at a predetermined timing after the contact. The movable part of the second stopper at the second restriction position is supported by the support part and restricts the movement of the first stopper toward the support part.

上記構成では、第1ストッパが、フレーム又はフロア部材の一方側に固定され、第2ストッパの支持部が、他方側に固定され、第1ストッパまたは第2ストッパのうちフロア部材側のストッパが、フレーム側のストッパよりも後方に配置される。例えば、第1ストッパをフレーム側に固定した場合には、第2ストッパの支持部を、第1ストッパの後面(対向面)よりも後方に離間した位置に配置してフロア部材側に固定し、第1ストッパをフロア部材側に固定した場合には、第2ストッパの支持部を、第1ストッパの前面(対向面)よりも前方に離間した位置に配置してフレーム側に固定する。   In the above configuration, the first stopper is fixed to one side of the frame or the floor member, the support portion of the second stopper is fixed to the other side, and the stopper on the floor member side of the first stopper or the second stopper is It is arranged behind the stopper on the frame side. For example, when the first stopper is fixed to the frame side, the support portion of the second stopper is disposed at a position separated rearward from the rear surface (opposing surface) of the first stopper and fixed to the floor member side, When the first stopper is fixed to the floor member side, the support portion of the second stopper is arranged at a position spaced forward from the front surface (opposing surface) of the first stopper and fixed to the frame side.

保持手段による支持部に対する可動部の保持は、車両が前面衝突してフロア部材がフレームに対して前方へ移動し、第1規制位置の第2ストッパの可動部と第1ストッパの対向面とが当接した後の所定のタイミングで解除される。すなわち、車両が前面衝突した際に、第1規制位置の第2ストッパの可動部と第1ストッパの対向面とが当接した後の所望のタイミングで、保持手段による支持部に対する可動部の保持を解除することができる。   The movable portion is held by the holding means with respect to the support portion when the vehicle collides frontward and the floor member moves forward with respect to the frame, and the movable portion of the second stopper at the first restriction position and the opposing surface of the first stopper It is released at a predetermined timing after the contact. In other words, when the vehicle collides with the front, the movable unit is held by the holding unit with respect to the support unit at a desired timing after the movable unit of the second stopper at the first restriction position comes into contact with the opposing surface of the first stopper. Can be released.

例えば、車室の座席シートに乗員が着座してシートベルトを締めた状態で車両が前面衝突してフレームの前端部が衝突物と衝突すると、フロア部材がフレームに対して前方へ慣性によって移動する。フロア部材がフレームに対して前方へ移動して第2ストッパの可動部と第1ストッパの対向面とが当接すると、フレームに対する前方へのフロア部材の移動が規制されてフロア部材の減速度が急激に増大し、乗員は、シートベルトが効き始めるまでフロア部材側の着座シートに対して前方へ慣性によって移動する。すなわち、乗員の速度が、フロア部材側の着座シートの速度よりも速くなる。ここで、第2ストッパの可動部と第1ストッパの対向面とが当接した後の所定のタイミングで、支持部に対する可動部の第1規制位置への保持を解除すると、可動部が第1規制位置から第2規制位置側へ移動し、この可動部の移動に伴って、フロア部材側(車体側)がフレームに対して前方へ移動する。このように、車体がフレームに対して前方へ移動することによって車体の減速度が減少して車体の速度低下が抑制される一方で、乗員はシートベルトによって減速度が増大して減速し始めるので、乗員と着座シートとの速度差を小さくすることができる。また、第2規制位置の第2ストッパの可動部は、支持部に支持されて、支持部側への第1ストッパの移動を規制するので、フレームに対する前方への車体の移動が再度規制される。すなわち、乗員と車体との速度差を小さくした状態で、シートベルトによって乗員を着座シートへ拘束して車体と乗員とを減速させることができるので、車両の前面衝突時に乗員の運動エネルギーを車体等(フレームを含む)の破損エネルギーで消費させる効率(ライドダウン効率)を高めることができ、乗員の傷害値指標の一つである乗員の最大減速度を低減して乗員の傷害を低減することができる。   For example, when the vehicle is collided with the front seat and the front end of the frame collides with a collision object with an occupant seated on the seat in the passenger compartment and the seat belt fastened, the floor member moves forward by inertia with respect to the frame. . When the floor member moves forward with respect to the frame and the movable portion of the second stopper contacts the opposing surface of the first stopper, the movement of the floor member forward with respect to the frame is restricted, and the deceleration of the floor member is reduced. The occupant rapidly increases and moves forward by inertia with respect to the seat on the floor member side until the seat belt starts to work. That is, the speed of the occupant becomes faster than the speed of the seating seat on the floor member side. Here, at a predetermined timing after the movable part of the second stopper comes into contact with the opposing surface of the first stopper, when the holding of the movable part to the first restriction position with respect to the support part is released, the movable part becomes the first Moving from the restriction position to the second restriction position side, the floor member side (vehicle body side) moves forward with respect to the frame as the movable part moves. Thus, while the vehicle body moves forward with respect to the frame, the deceleration of the vehicle body is reduced and the decrease in the vehicle body speed is suppressed, while the occupant begins to decelerate due to the increase in deceleration due to the seat belt. The speed difference between the passenger and the seat can be reduced. In addition, since the movable portion of the second stopper at the second restriction position is supported by the support portion and restricts the movement of the first stopper toward the support portion, the forward movement of the vehicle body relative to the frame is again restricted. . In other words, in a state where the speed difference between the occupant and the vehicle body is small, the occupant can be decelerated by restraining the occupant to the seating seat by the seat belt, so that the kinetic energy of the occupant can be reduced by the vehicle body It is possible to increase the efficiency (ride down efficiency) to be consumed with the broken energy (including the frame) and to reduce the occupant's injury by reducing the occupant's maximum deceleration, which is one of the occupant's injury value indicators. it can.

また、保持手段は、車両の通常走行時に、第2ストッパの支持部に対する可動部の位置を第1規制位置に保持する。第1規制位置の可動部は、第1ストッパの対向面から離間して対向面との間に可動空間を区画し、可動空間は、第2ストッパと第1ストッパとの相対的な前後方向の移動を許容する。このため、車両の通常走行時に、フレームに弾性支持されたフロア部材がフレームに対して前方へ移動した場合であっても、第1ストッパと第2ストッパとが干渉せず、フレームによるフロア部材の弾性支持が損なわれることがないので、車両の通常走行時の乗り心地の低下を抑制することができる。   The holding means holds the position of the movable portion with respect to the support portion of the second stopper at the first restriction position during normal traveling of the vehicle. The movable portion at the first restricting position is separated from the facing surface of the first stopper and defines a movable space between the facing surface, and the movable space is in a relative front-rear direction between the second stopper and the first stopper. Allow movement. For this reason, even when the floor member elastically supported by the frame moves forward with respect to the frame during normal traveling of the vehicle, the first stopper and the second stopper do not interfere with each other, and the floor member by the frame does not interfere. Since the elastic support is not impaired, it is possible to suppress a decrease in riding comfort during normal driving of the vehicle.

本発明によれば、車両の前面衝突時にライドダウン効率を高めて乗員の最大減速度を低減することができる。   According to the present invention, it is possible to increase ride down efficiency and reduce the maximum deceleration of the occupant during a frontal collision of the vehicle.

本発明の第1実施形態に係るフレーム付車両の概略図であり、(a)は側面図、(b)は(a)を矢印Ib方向から視た底面図である。It is the schematic of the vehicle with a frame which concerns on 1st Embodiment of this invention, (a) is a side view, (b) is the bottom view which looked at (a) from the arrow Ib direction. 図1(b)のストッパ装置の要部の拡大図である。It is an enlarged view of the principal part of the stopper apparatus of FIG.1 (b). 図2のストッパ装置の第2ストッパの概略構成図である。It is a schematic block diagram of the 2nd stopper of the stopper apparatus of FIG. 第2ストッパの動きの説明図であり、(a)は第1状態を、(b)は第2状態を、(c)は第3状態を、(d)は第4状態をそれぞれ示す。It is explanatory drawing of a motion of a 2nd stopper, (a) shows a 1st state, (b) shows a 2nd state, (c) shows a 3rd state, (d) shows a 4th state, respectively. 図1(a)のフレーム付車両が前面衝突したときの状態を示す概略図である。It is the schematic which shows a state when the vehicle with a frame of Fig.1 (a) collides front. 本発明の第2実施形態に係るストッパ装置の第2ストッパの概略構成図であり、(a)は第1規制位置に、(b)は第2規制位置に可動部材が配置された状態をそれぞれ示す。It is a schematic block diagram of the 2nd stopper of the stopper apparatus which concerns on 2nd Embodiment of this invention, (a) is a 1st control position, (b) shows the state by which the movable member is arrange | positioned in the 2nd control position, respectively. Show.

以下、本発明の第1実施形態に係るフレーム付車両(以下、単に車両と称する)1のストッパ装置10について、図面に基づいて説明する。なお、各図において、FRは車両の前方を、UPは上方を、INは車幅方向内側をそれぞれ示す。また、以下の説明において、左右方向は車両前方を向いた状態での左右方向を意味する。また、図2は、図1(b)の車両1の右側の要部の拡大図である。   Hereinafter, a stopper device 10 of a vehicle with a frame (hereinafter simply referred to as a vehicle) 1 according to a first embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward. FIG. 2 is an enlarged view of a main part on the right side of the vehicle 1 in FIG.

図1(a)及び図1(b)に示すように、車両1は、ボディ5がラバー等のマウント機構(図示省略)を介してフレーム2に弾性支持されるフレーム付車両である。   As shown in FIGS. 1A and 1B, the vehicle 1 is a vehicle with a frame in which a body 5 is elastically supported by the frame 2 via a mounting mechanism (not shown) such as a rubber.

車両1のフレーム2は、車幅方向の両側で前後方向に延びる左右1対のサイドメンバ3(3L,3R)と、車幅方向に延びて左右のサイドメンバ3を連結する複数のクロスメンバ4とを有するはしご形フレーム(ラダーフレーム)である。複数のクロスメンバ4は、前後方向に相互に離間して配置される。   A frame 2 of the vehicle 1 includes a pair of left and right side members 3 (3L, 3R) extending in the front-rear direction on both sides in the vehicle width direction, and a plurality of cross members 4 extending in the vehicle width direction and connecting the left and right side members 3. It is a ladder-shaped frame (ladder frame). The plurality of cross members 4 are spaced apart from each other in the front-rear direction.

車両1のボディ5は、車室11の下方を区画するフロア部材12を有し、フレーム2に弾性支持される。フロア部材12は、フロアパネル6と左右1対のサイドシル7(7L,7R)とを有する。フロアパネル6は、フレーム2の上方に配置されて車室11の底面を形成するパネル部材であって、その車幅方向の中央には、円弧状に上方へ膨出するトンネル部9が曲折形成されている。車室11には、乗員が着座する着座シート(座席)8が配置されてフロアパネル6に対して固定される。フロアパネル6は、着座シート8を下方から支持する。左右のサイドシル7は、左右のサイドメンバ3の車幅方向外側にそれぞれ配置されて前後方向に延び、フロアパネル6の車幅方向両側に固定される。左右のサイドメンバ3は、フロアパネル6及び左右のサイドシル7の前端よりも前方へ延び、左右のサイドメンバ3の前端が、フロアパネル6及び左右のサイドシル7の前端よりも前方に配置される。左右のサイドシル7は、ラバー等のマウント機構(図示省略)を介して左右のサイドメンバ3に弾性支持される。   The body 5 of the vehicle 1 includes a floor member 12 that defines a lower portion of the passenger compartment 11 and is elastically supported by the frame 2. The floor member 12 includes a floor panel 6 and a pair of left and right side sills 7 (7L, 7R). The floor panel 6 is a panel member that is disposed above the frame 2 and forms the bottom surface of the vehicle compartment 11, and a tunnel portion 9 that bulges upward in an arc shape is bent at the center in the vehicle width direction. Has been. A seating seat (seat) 8 on which an occupant sits is disposed in the passenger compartment 11 and fixed to the floor panel 6. The floor panel 6 supports the seating seat 8 from below. The left and right side sills 7 are respectively arranged on the outer sides in the vehicle width direction of the left and right side members 3 and extend in the front-rear direction, and are fixed to both sides of the floor panel 6 in the vehicle width direction. The left and right side members 3 extend forward from the front ends of the floor panel 6 and the left and right side sills 7, and the front ends of the left and right side members 3 are disposed in front of the floor panel 6 and the front ends of the left and right side sills 7. The left and right side sills 7 are elastically supported by the left and right side members 3 via a mounting mechanism (not shown) such as a rubber.

図2及び図3に示すように、ストッパ装置10は、加速度センサ13と、ECU(Electric Control Unit)14と、左右の第1ストッパ15(15L,15R)と、左右の第2ストッパ16(16L,16R)とを備える。なお、図2及び図3には、右側の第1ストッパ15Rと右側の第2ストッパ16Rとが図示されている。また、左右の第1ストッパ15と左右の第2ストッパ16とは、車両1の左右に対照的に設けられ、ほぼ同様の構成を有するため、以下では、一方について説明し、他方の説明を省略する。   2 and 3, the stopper device 10 includes an acceleration sensor 13, an ECU (Electric Control Unit) 14, left and right first stoppers 15 (15L and 15R), and left and right second stoppers 16 (16L). , 16R). 2 and 3 show the first stopper 15R on the right side and the second stopper 16R on the right side. The left and right first stoppers 15 and the left and right second stoppers 16 are provided in contrast to the left and right sides of the vehicle 1 and have substantially the same configuration. Therefore, one of them will be described below, and the description of the other will be omitted. To do.

図1(a)及び図3に示すように、加速度センサ13は、車両1のボディ5側(例えば、フロア部材12)に設けられ、ボディ5の減速度(負の加速度)を逐次検出する。   As shown in FIGS. 1A and 3, the acceleration sensor 13 is provided on the body 5 side (for example, the floor member 12) of the vehicle 1, and sequentially detects the deceleration (negative acceleration) of the body 5.

図1(b)及び図3に示すように、第1ストッパ15は、上下方向に延びる金属製の部材であって、サイドシル7の車幅方向内側に配置されてサイドシル7の車幅方向内側面17に固定され、サイドシル7よりも下方へ延びる。第1ストッパ15は、少なくともサイドメンバ3側の第2ストッパ16よりも下方まで延び、第1ストッパ15の前面(対向面)18は、第2ストッパ16から後方に離間した位置に配置される。第1ストッパ15の後面側には、ほぼ直角三角形状の補強部19が設けられる。補強部19は、その第1辺がサイドシル7の車幅方向内側面17に沿って前後方向に延びてサイドシル7の車幅方向内側面17に固定され、第2辺が第1ストッパ15の後面に沿って車幅方向に延びて第1ストッパ15の後面に固定される。なお、本実施形態では、第1ストッパ15をサイドシル7に固定したが、これに限定されるものではなく、第1ストッパ15は、車室11の下方を区画するフロア部材12に対して固定されていればよい。また、第1ストッパ15の素材や形状は、上記に限定されず、高い強度を有する様々な形状の部材を適用することができる。   As shown in FIGS. 1B and 3, the first stopper 15 is a metal member that extends in the vertical direction, and is disposed on the inner side in the vehicle width direction of the side sill 7, and the inner side surface in the vehicle width direction of the side sill 7. 17 and is extended below the side sill 7. The first stopper 15 extends at least below the second stopper 16 on the side member 3 side, and the front surface (opposing surface) 18 of the first stopper 15 is disposed at a position spaced rearward from the second stopper 16. On the rear surface side of the first stopper 15, a reinforcing portion 19 having a substantially right triangle shape is provided. The reinforcing portion 19 has a first side that extends in the front-rear direction along the vehicle width direction inner side surface 17 of the side sill 7 and is fixed to the vehicle width direction inner side surface 17 of the side sill 7, and a second side that is the rear surface of the first stopper 15. And extending in the vehicle width direction along the rear end of the first stopper 15. In the present embodiment, the first stopper 15 is fixed to the side sill 7, but the present invention is not limited to this, and the first stopper 15 is fixed to the floor member 12 that defines the lower side of the passenger compartment 11. It only has to be. Further, the material and shape of the first stopper 15 are not limited to the above, and various shapes of members having high strength can be applied.

図2及び図3に示すように、第2ストッパ16は、支持部材(支持部)21と、可動部材(可動部)22と、カラー23と、ソケット24と、ヒューズボルト25とを有し、第1ストッパ15の前面18から前方へ離間した位置に配置され、サイドメンバ3の車幅方向外側面20に固定される。なお、本実施形態では、第2ストッパ16をサイドメンバ3に固定したが、これに限定されるものではなく、第2ストッパ16は、フレーム2に対して固定されていればよい。   As shown in FIGS. 2 and 3, the second stopper 16 includes a support member (support portion) 21, a movable member (movable portion) 22, a collar 23, a socket 24, and a fuse bolt 25. It arrange | positions in the position spaced apart from the front surface 18 of the 1st stopper 15, and is fixed to the vehicle width direction outer side surface 20 of the side member 3. As shown in FIG. In the present embodiment, the second stopper 16 is fixed to the side member 3, but the present invention is not limited to this, and the second stopper 16 may be fixed to the frame 2.

支持部材21は、金属製の部材であって、前後方向に延びる略円柱状の柱状部26を有する。柱状部26は、サイドメンバ3の車幅方向外側面20から車幅方向外側に離間し、且つ第1ストッパ15の前面18から前方へ離間した位置に配置される。柱状部26の後面は、第1ストッパ15の前面18に対向する。柱状部26の前端部の車幅方向内側面には、車幅方向内側へ延びる連結部27が一体的に設けられ、連結部27の車幅方向内端部がサイドメンバ3の車幅方向外側面20に固定される。すなわち、連結部27は、柱状部26とサイドメンバ3とを連結する。また、柱状部26及び連結部27の前端面と、サイドメンバ3の車幅方向外側面20との間には、ほぼ直角三角形状の補強部28が設けられる。補強部28は、柱状部26及び連結部27の前端面と、サイドメンバ3の車幅方向外側面20とに固定される。   The support member 21 is a metal member, and has a substantially columnar columnar portion 26 extending in the front-rear direction. The columnar portion 26 is disposed at a position spaced apart from the vehicle width direction outer side surface 20 of the side member 3 to the vehicle width direction outer side and spaced forward from the front surface 18 of the first stopper 15. The rear surface of the columnar portion 26 faces the front surface 18 of the first stopper 15. A connecting portion 27 extending inward in the vehicle width direction is integrally provided on the inner side surface in the vehicle width direction of the front end portion of the columnar portion 26, and the inner end portion in the vehicle width direction of the connecting portion 27 is outside the vehicle width direction of the side member 3. It is fixed to the side surface 20. That is, the connecting portion 27 connects the columnar portion 26 and the side member 3. A substantially right-angled triangular reinforcing portion 28 is provided between the front end surfaces of the columnar portion 26 and the connecting portion 27 and the outer side surface 20 of the side member 3 in the vehicle width direction. The reinforcing portion 28 is fixed to the front end surfaces of the columnar portion 26 and the connecting portion 27 and the vehicle width direction outer side surface 20 of the side member 3.

柱状部26は、大径部26aと、大径部26aよりも小径の小径部26bとを有する。小径部26bは、大径部26aと同軸に配置されて大径部26aの後面29から後方へ突出する。小径部26bの外周面には、その周方向に沿って延びる溝部32が形成される。柱状部26は、小径部26bの後面30から前方へ直線状に延びる開口部31を有する。開口部31は、小径部26bの後面30から連続して大径部26aの内部まで延びる。開口部31の内部には、インフレータ33が設けられる。インフレータ33は、ECU14からの信号によって作動して開口部31内にガスを発生させる。   The columnar portion 26 includes a large diameter portion 26a and a small diameter portion 26b having a smaller diameter than the large diameter portion 26a. The small diameter portion 26b is disposed coaxially with the large diameter portion 26a and protrudes rearward from the rear surface 29 of the large diameter portion 26a. A groove portion 32 extending along the circumferential direction is formed on the outer peripheral surface of the small diameter portion 26b. The columnar portion 26 has an opening 31 that linearly extends forward from the rear surface 30 of the small diameter portion 26b. The opening 31 continuously extends from the rear surface 30 of the small diameter portion 26b to the inside of the large diameter portion 26a. An inflator 33 is provided inside the opening 31. The inflator 33 is activated by a signal from the ECU 14 to generate gas in the opening 31.

可動部材22は、金属製の部材であって、前方へ開口する有底の筒状に形成される。可動部材22の内周面は、前方の開口34から同径で後方へ延びる第1領域35と、第1領域35よりも小径に形成されて第1領域35の後端から連続して後方へ延びる第2領域36と、第2領域36よりも小径に形成されて第2領域36の後端から連続して後方へ延びる第3領域37とを有する。第1領域35と第2領域36との間には、第1段差部38が形成され、第2領域36と第3領域37との間には、第2段差部39が形成される。第2領域36の内径は、柱状部26の大径部26aの挿入を許容するように、柱状部26の大径部26aの外径よりも僅かに大きく形成される。第3領域37の内径は、柱状部26の大径部26aの外径よりも小さく、且つ小径部26b外径よりも大きく形成される。可動部材22は、支持部材21の柱状部26と第1ストッパ15の前面18との間に配置され、柱状部26の後端部側(小径部26b側)を開口34から挿入した状態で、カラー23、ソケット24及びヒューズボルト25を介して柱状部26に前後方向に移動可能に支持される。   The movable member 22 is a metal member and is formed in a bottomed cylindrical shape that opens forward. The inner peripheral surface of the movable member 22 is formed with a first region 35 having the same diameter and extending rearward from the front opening 34, and having a smaller diameter than the first region 35, and continuously rearward from the rear end of the first region 35. A second region 36 that extends, and a third region 37 that is formed to have a smaller diameter than the second region 36 and continuously extend rearward from the rear end of the second region 36 are included. A first step portion 38 is formed between the first region 35 and the second region 36, and a second step portion 39 is formed between the second region 36 and the third region 37. The inner diameter of the second region 36 is slightly larger than the outer diameter of the large-diameter portion 26a of the columnar portion 26 so as to allow insertion of the large-diameter portion 26a of the columnar portion 26. The inner diameter of the third region 37 is smaller than the outer diameter of the large diameter part 26a of the columnar part 26 and larger than the outer diameter of the small diameter part 26b. The movable member 22 is disposed between the columnar portion 26 of the support member 21 and the front surface 18 of the first stopper 15, and the rear end portion side (small diameter portion 26b side) of the columnar portion 26 is inserted from the opening 34. It is supported by the columnar portion 26 through the collar 23, the socket 24 and the fuse bolt 25 so as to be movable in the front-rear direction.

カラー23は、樹脂製の部材であって、前後方向と交叉する円板状のベース部40と、ベース部40の前面側の中央部から前方へ突出する円柱状の蓋部41と、ベース部40の前面側の外周縁部から前方へ突出する円環状の側壁部42とを有し、支持部材21の柱状部26の後方に配置されて、柱状部26の小径部26bに前後方向に移動可能に支持される。ベース部40の外径は、可動部材22の第3領域37の内径よりも僅かに小さく形成される。蓋部41は、その外径が柱状部26の開口部31の内径と略同じ大きさに形成され、柱状部26の開口部31に後方から圧入された状態で開口部31の開口を密閉して塞ぐ。側壁部42の外周面は、ベース部40の外径と同径でベース部40の外周縁から連続して前方へ延びる第1領域43と、第1領域43よりも小径に形成されて第1領域43の前端から連続して前方へ延びる第2領域44とを有する。側壁部42の外周面の第2領域44の外径は、柱状部26の小径部26bの外径よりも大きい。側壁部42の内径は、柱状部26の小径部26bの外径よりも僅かに大きく形成され、柱状部26の小径部26bの挿入を許容する。側壁部42の前端部には、側壁部42の内周面46から径方向の内側へ突出する円環状の突出部45が形成される。突出部45は、柱状部26の小径部26bの溝部32内に配置される。突出部45の前後方向の厚さは、柱状部26の溝部32の幅(前後方向の長さ)よりも短い。柱状部26の小径部26bをカラー23の側壁部42の内側に挿入し、蓋部41を柱状部26の開口部31に圧入し、突出部45を柱状部26の溝部32内に配置した状態で、カラー23は、柱状部26の小径部26bに支持される。   The collar 23 is a resin member, and includes a disk-shaped base portion 40 that intersects with the front-rear direction, a columnar lid portion 41 that protrudes forward from a central portion on the front side of the base portion 40, and a base portion 40 and an annular side wall portion 42 protruding forward from the outer peripheral edge portion of the front surface side, and disposed behind the columnar portion 26 of the support member 21 and moved in the front-rear direction to the small-diameter portion 26b of the columnar portion 26. Supported as possible. The outer diameter of the base portion 40 is formed slightly smaller than the inner diameter of the third region 37 of the movable member 22. The lid 41 has an outer diameter that is substantially the same as the inner diameter of the opening 31 of the columnar portion 26, and seals the opening of the opening 31 in a state of being press-fitted into the opening 31 of the columnar portion 26 from the rear. Close up. The outer peripheral surface of the side wall portion 42 has a first region 43 having the same diameter as the outer diameter of the base portion 40 and continuously extending forward from the outer peripheral edge of the base portion 40. The first region 43 has a smaller diameter than the first region 43. And a second region 44 extending continuously forward from the front end of the region 43. The outer diameter of the second region 44 on the outer peripheral surface of the side wall part 42 is larger than the outer diameter of the small diameter part 26 b of the columnar part 26. The inner diameter of the side wall part 42 is formed slightly larger than the outer diameter of the small diameter part 26 b of the columnar part 26, and the insertion of the small diameter part 26 b of the columnar part 26 is allowed. An annular projecting portion 45 projecting inward in the radial direction from the inner peripheral surface 46 of the side wall portion 42 is formed at the front end portion of the side wall portion 42. The protruding part 45 is disposed in the groove part 32 of the small diameter part 26 b of the columnar part 26. The thickness of the protrusion 45 in the front-rear direction is shorter than the width (length in the front-rear direction) of the groove 32 of the columnar part 26. The small diameter portion 26b of the columnar portion 26 is inserted inside the side wall portion 42 of the collar 23, the lid portion 41 is press-fitted into the opening portion 31 of the columnar portion 26, and the protruding portion 45 is disposed in the groove portion 32 of the columnar portion 26. Thus, the collar 23 is supported by the small diameter part 26 b of the columnar part 26.

ソケット24は、Cリング状に形成された金属製の板状部材であって、径方向に弾性変形可能であり、支持部材21の柱状部26の小径部26bの径方向外側で小径部26bの周方向に沿って延びる。ソケット24の外周面には、後端側の第1領域48と、第1領域48よりも大径に形成されて第1領域48の前方に配置される第2領域49とを有する。第1領域48と第2領域49との間には、段差部50が形成される。ソケット24が縮径してソケット24の内周面47と柱状部26の小径部26bの外周面とが当接した状態(図4(c)参照)でのソケット24の第2領域49の外径は、柱状部26の大径部26aの外径よりも小さい。   The socket 24 is a metal plate-like member formed in a C-ring shape, and is elastically deformable in the radial direction. The socket 24 is formed on the outer side in the radial direction of the small-diameter portion 26 b of the columnar portion 26 of the support member 21. It extends along the circumferential direction. The outer peripheral surface of the socket 24 includes a first region 48 on the rear end side and a second region 49 that is formed in a larger diameter than the first region 48 and is disposed in front of the first region 48. A step portion 50 is formed between the first region 48 and the second region 49. Outside the second region 49 of the socket 24 in a state where the diameter of the socket 24 is reduced and the inner peripheral surface 47 of the socket 24 is in contact with the outer peripheral surface of the small diameter portion 26b of the columnar portion 26 (see FIG. 4C). The diameter is smaller than the outer diameter of the large diameter part 26 a of the columnar part 26.

ヒューズボルト25は、所定の大きさ以上の荷重が入力した際に破断可能なボルトであって、後述するように、可動部材22と支持部材21の柱状部26とを固定する。ヒューズボルト25の強度は、車両1の通常走行中の振動等によっては破断せず、且つ後述する車両1の前面衝突時に可動部材22から前方への荷重が入力した際に容易に破断する強度に設定される。   The fuse bolt 25 is a bolt that can be broken when a load of a predetermined size or more is input, and fixes the movable member 22 and the columnar portion 26 of the support member 21 as described later. The fuse bolt 25 does not break due to vibration or the like during normal traveling of the vehicle 1 and is easily broken when a forward load is input from the movable member 22 at the time of a frontal collision of the vehicle 1 described later. Is set.

図3に示すように、インフレータ33が作動していない通常時(以下、単に通常時という)には、柱状部26の小径部26bの後面30がカラー23のベース部40の前面に当接し、カラー23の突出部45の前面が柱状部26の溝部32の前壁に当接することによって、柱状部26の小径部26bに対するカラー23の前方への移動が規制される。また、カラー23の蓋部41が、柱状部26の開口部31に圧入されて開口部31の内周面を押圧する状態で開口部31の内周面に密接し、柱状部26の小径部26bに対するカラー23の後方への移動を規制する。ソケット24は、径方向外側に拡径された状態で、ソケット24の内周面47がカラー23の外周面の第2領域44に当接し、該当接によってソケット24の径方向内側への収縮(縮径)が規制される。ソケット24の前面51は、柱状部26の大径部26aの後面29に当接する。ソケット24の外周面の第1領域48が、可動部材22の内周面の第2領域36に当接し、ソケット24の外周面の第2領域49が、可動部材22の内周面の第1領域35に当接し、ソケット24の段差部50が、可動部材22の第1段差部38に前方から当接する。このように、可動部材22の第1段差部38がソケット24の段差部50に当接し、且つソケット24の前面51が柱状部26の大径部26aの後面29に当接することによって、ソケット24が可動部材22と支持部材21との間に挟まれて、支持部材21に対する前方への可動部材22の移動が規制される。可動部材22の前端22aが、柱状部26の大径部26aの後面29の位置よりも前方に配置され、可動部材22のうち柱状部26の大径部26aと重なる領域が、柱状部26の大径部26aの後端部に対してヒューズボルト25によって固定される。ヒューズボルト25は、支持部材21に対する前後方向の(主に後方への)可動部材22の移動を規制する。可動部材22は、カラー23、ソケット24、及びヒューズボルト25によって支持部材21に対する前後方向の移動が規制されて第1規制位置(図2中の実線で示す位置)に保持され、カラー23、ソケット24及びヒューズボルト25を介して柱状部26に支持される。すなわち、カラー23、ソケット24、及びヒューズボルト25は、支持部材21に対する可動部材22の位置を第1規制位置に保持する保持手段として機能する。図2に示すように、ボディ5のフロア部材12がフレーム2に対して前後方向に移動していない状態で、第1規制位置の可動部材22は、第1ストッパ15の前面18から前方に離間して、第1ストッパ15の前面18との間に可動空間52を区画する。可動空間52は、車両1の通常走行時に第1ストッパ15と第2ストッパ16との相対的な前後方向の移動を許容することにより、通常走行時にフレーム2に対する前方へのフロア部材12の移動を許容する。   As shown in FIG. 3, when the inflator 33 is not operating normally (hereinafter simply referred to as normal operation), the rear surface 30 of the small-diameter portion 26b of the columnar portion 26 contacts the front surface of the base portion 40 of the collar 23, When the front surface of the protruding portion 45 of the collar 23 comes into contact with the front wall of the groove portion 32 of the columnar portion 26, the forward movement of the collar 23 with respect to the small diameter portion 26 b of the columnar portion 26 is restricted. In addition, the lid portion 41 of the collar 23 is pressed into the opening portion 31 of the columnar portion 26 and presses against the inner peripheral surface of the opening portion 31 so as to be in close contact with the inner peripheral surface of the opening portion 31. The rearward movement of the collar 23 relative to 26b is restricted. In the state where the diameter of the socket 24 is expanded radially outward, the inner peripheral surface 47 of the socket 24 abuts on the second region 44 of the outer peripheral surface of the collar 23, and the socket 24 contracts radially inward ( (Diameter reduction) is regulated. The front surface 51 of the socket 24 abuts on the rear surface 29 of the large diameter portion 26 a of the columnar portion 26. The first region 48 on the outer peripheral surface of the socket 24 abuts on the second region 36 on the inner peripheral surface of the movable member 22, and the second region 49 on the outer peripheral surface of the socket 24 is the first region on the inner peripheral surface of the movable member 22. In contact with the region 35, the stepped portion 50 of the socket 24 contacts the first stepped portion 38 of the movable member 22 from the front. As described above, the first step portion 38 of the movable member 22 contacts the step portion 50 of the socket 24, and the front surface 51 of the socket 24 contacts the rear surface 29 of the large diameter portion 26 a of the columnar portion 26. Is sandwiched between the movable member 22 and the support member 21, and the movement of the movable member 22 forward with respect to the support member 21 is restricted. The front end 22a of the movable member 22 is arranged in front of the position of the rear surface 29 of the large-diameter portion 26a of the columnar portion 26, and the region of the movable member 22 that overlaps the large-diameter portion 26a of the columnar portion 26 is The fuse bolt 25 fixes the rear end portion of the large diameter portion 26a. The fuse bolt 25 regulates the movement of the movable member 22 in the front-rear direction (mainly rearward) with respect to the support member 21. The movable member 22 is held in a first restricting position (a position indicated by a solid line in FIG. 2) by the collar 23, the socket 24, and the fuse bolt 25 being restricted from moving in the front-rear direction with respect to the support member 21. 24 and the fuse bolt 25 are supported by the columnar portion 26. That is, the collar 23, the socket 24, and the fuse bolt 25 function as a holding unit that holds the position of the movable member 22 with respect to the support member 21 at the first restriction position. As shown in FIG. 2, the movable member 22 at the first restriction position is separated forward from the front surface 18 of the first stopper 15 in a state where the floor member 12 of the body 5 is not moved in the front-rear direction with respect to the frame 2. Thus, the movable space 52 is defined between the first stopper 15 and the front surface 18. The movable space 52 allows the first stopper 15 and the second stopper 16 to move relative to each other in the front-rear direction during normal travel of the vehicle 1, thereby allowing the floor member 12 to move forward relative to the frame 2 during normal travel. Allow.

図3に示すように、ECU14は、CPU(Central Processing Unit)53や記憶部54を有する。記憶部54は、例えば、ROM(Read Only Memory)やRAM(Random Access Memory)などの記録媒体によって構成される。記憶部54には、ボディ5の減速度の閾値Kが予め記憶される。また、記憶部54には、加速度センサ13からの情報や各種データなどが読み書き自在に記憶されるデータ記憶領域が予め設定されている。記憶部54は、上記データ記憶領域以外にも、CPU53の演算結果の一時記憶領域等として機能する。なお、記憶部54に予め記憶されるボディ5の減速度の閾値Kには、車両1が所定の速度で走行中に前面衝突して、第1ストッパ15の前面18と第2ストッパ16の第1規制位置の可動部材22とが当接した後にフロア部材12の減速度が増大する際の増大中の所定の値(減速度)が、実験やシミュレーション等によって求められて設定される。   As shown in FIG. 3, the ECU 14 includes a CPU (Central Processing Unit) 53 and a storage unit 54. The storage unit 54 is configured by a recording medium such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 54 stores a deceleration threshold K of the body 5 in advance. In the storage unit 54, a data storage area in which information from the acceleration sensor 13, various data, and the like are stored in a readable and writable manner is set in advance. In addition to the data storage area, the storage unit 54 functions as a temporary storage area for calculation results of the CPU 53. Note that the threshold value K of the deceleration of the body 5 stored in advance in the storage unit 54 has a frontal collision while the vehicle 1 is traveling at a predetermined speed, and the first front surface 18 of the first stopper 15 and the second stopper 16 A predetermined value (deceleration) that is increasing when the deceleration of the floor member 12 is increased after the movable member 22 is in contact with the one restricting position is obtained and set by experiment, simulation, or the like.

ECU14のCPU53は、加速度センサ13からの情報に基づいて、車両1のボディ5の減速度と予め記憶部54に記憶された閾値Kとを比較する。CPU53は、ボディ5の減速度が、閾値Kを超えた場合、インフレータ33に信号を出力してインフレータ33を作動させる。   Based on information from the acceleration sensor 13, the CPU 53 of the ECU 14 compares the deceleration of the body 5 of the vehicle 1 with a threshold value K stored in advance in the storage unit 54. When the deceleration of the body 5 exceeds the threshold value K, the CPU 53 outputs a signal to the inflator 33 to operate the inflator 33.

次に、第2ストッパ16の動きについて、図4(a)〜図4(d)に基づいて説明する。なお、図4(a)〜図4(d)には、右側の第1ストッパ15Rと右側の第2ストッパ16Rとが図示されている。図4(a)は、第2ストッパ16に第1ストッパ15が当接した第1状態を、図4(b)は、インフレータ33が作動した第2状態を、図4(c)は、ソケット24が収縮した第3状態を、図4(d)は、可動部材22が第1規制位置から第2規制位置へ移動した第4状態をそれぞれ示す。   Next, the movement of the second stopper 16 will be described with reference to FIGS. 4 (a) to 4 (d). 4A to 4D show the first stopper 15R on the right side and the second stopper 16R on the right side. 4A shows a first state in which the first stopper 15 is in contact with the second stopper 16, FIG. 4B shows a second state in which the inflator 33 is operated, and FIG. 4C shows a socket. FIG. 4D shows a fourth state in which the movable member 22 has moved from the first restriction position to the second restriction position.

図4(a)に示す第1状態の第2ストッパ16は、上述した通常時(インフレータ33が作動していない時)の状態であり、可動部材22が、カラー23、ソケット24、及びヒューズボルト25によって支持部材21に対して第1規制位置に保持される。第2ストッパ16は、車両1の通常走行時、及び図4(a)に示すように車両1が前面衝突して第2ストッパ16に第1ストッパ15が当接した後、インフレータ33が作動するまで第1状態を維持する。第2ストッパ16は、インフレータ33が作動すると、第1状態から第2状態へ移行する。   The second stopper 16 in the first state shown in FIG. 4A is in the above-described normal state (when the inflator 33 is not operating), and the movable member 22 includes the collar 23, the socket 24, and the fuse bolt. 25, the support member 21 is held at the first restriction position. The second stopper 16 operates when the vehicle 1 is traveling normally, and after the vehicle 1 collides with the front and the first stopper 15 comes into contact with the second stopper 16 as shown in FIG. Until the first state is maintained. The second stopper 16 shifts from the first state to the second state when the inflator 33 operates.

図4(b)に示すように、ECU14(図3参照)からの信号によってインフレータ33が作動すると、インフレータ33が発生したガスによって支持部材21の柱状部26の開口部31内の圧力が急激に上昇してカラー23の蓋部41が後方へ押し出され、カラー23が柱状部26の小径部26bに対して後方(図4(b)の矢印方向)へ移動し、第2ストッパ16が第2状態となる。第2状態では、カラー23の突出部45の後面が、柱状部26の小径部26bの溝部32の後壁に当接し、この当接によって小径部26bに対する後方へのカラー23の移動が規制される。カラー23の後端部は、可動部材22の内周面の第3領域37の内側に挿入され、カラー23の外周面の第1領域43が、可動部材22の内周面の第3領域37に沿って配置される。また、第2状態では、カラー23の外周面の第2領域44が、ソケット24の内周面47の後端よりも後方へ移動し、カラー23がソケット24の縮径の規制を解除する。第2ストッパ16は、ソケット24が縮径して、第2状態から第3状態へ移行する。   As shown in FIG. 4B, when the inflator 33 is actuated by a signal from the ECU 14 (see FIG. 3), the pressure in the opening 31 of the columnar portion 26 of the support member 21 is suddenly caused by the gas generated by the inflator 33. The cover portion 41 of the collar 23 is raised and pushed backward, the collar 23 moves rearward (in the direction of the arrow in FIG. 4B) with respect to the small diameter portion 26b of the columnar portion 26, and the second stopper 16 is second. It becomes a state. In the second state, the rear surface of the protruding portion 45 of the collar 23 abuts against the rear wall of the groove portion 32 of the small diameter portion 26b of the columnar portion 26, and the movement of the collar 23 to the rear with respect to the small diameter portion 26b is restricted by this contact. The The rear end portion of the collar 23 is inserted inside the third region 37 on the inner peripheral surface of the movable member 22, and the first region 43 on the outer peripheral surface of the collar 23 is inserted into the third region 37 on the inner peripheral surface of the movable member 22. It is arranged along. In the second state, the second region 44 on the outer peripheral surface of the collar 23 moves rearward from the rear end of the inner peripheral surface 47 of the socket 24, and the collar 23 releases the restriction on the diameter reduction of the socket 24. The second stopper 16 shifts from the second state to the third state as the socket 24 is reduced in diameter.

図4(c)に示すように、第3状態の第2ストッパ16は、ソケット24が径方向内側(図4(c)の矢印方向)へ収縮(縮径)した状態である。第3状態では、ソケット24が縮径してソケット24の内周面47が柱状部26の小径部26bの外周面に当接する。縮径した状態のソケット24は、ソケット24の外周面の第1領域48の外径が、可動部材22の内周面の第3領域37の内径よりも小さく、ソケット24の外周面の第2領域49の外径が、可動部材22の内周面の第3領域37の内径よりも大きく、且つ可動部材22の内周面の第2領域36の内径よりも小さい。ソケット24の段差部50は、可動部材22の第1段差部38よりも径方向内側に移動して、ソケット24は、支持部材21に対する前方への可動部材22の移動の規制を解除する。第3状態で、ヒューズボルト25に対して可動部材22から前方への上記所定の大きさ以上の荷重が入力し、ヒューズボルト25が破断すると、可動部材22が支持部材21に対して前方(図4(d)の矢印方向)へ移動して、第2ストッパ16が第3状態から第4状態へ移行する。   As shown in FIG. 4C, the second stopper 16 in the third state is a state in which the socket 24 is contracted (reduced) radially inward (in the direction of the arrow in FIG. 4C). In the third state, the diameter of the socket 24 is reduced, and the inner peripheral surface 47 of the socket 24 comes into contact with the outer peripheral surface of the small diameter portion 26 b of the columnar portion 26. In the reduced diameter socket 24, the outer diameter of the first region 48 on the outer peripheral surface of the socket 24 is smaller than the inner diameter of the third region 37 on the inner peripheral surface of the movable member 22. The outer diameter of the region 49 is larger than the inner diameter of the third region 37 on the inner peripheral surface of the movable member 22 and smaller than the inner diameter of the second region 36 on the inner peripheral surface of the movable member 22. The step portion 50 of the socket 24 moves radially inward from the first step portion 38 of the movable member 22, and the socket 24 releases the restriction of the movement of the movable member 22 forward with respect to the support member 21. In the third state, when a load of the predetermined size or more forward from the movable member 22 is input to the fuse bolt 25 and the fuse bolt 25 is broken, the movable member 22 is forward of the support member 21 (see FIG. 4 (d) direction), the second stopper 16 shifts from the third state to the fourth state.

図4(d)に示すように、第4状態の第2ストッパ16は、可動部材22が第1規制位置よりも前方の第2規制位置に配置される。図2に示すように、第2規制位置(図2中の二点鎖線で示す位置)は、ボディ5がフレーム2に対して前後方向に移動していない状態における第1ストッパ15の前面18から、第1規制位置(図2中の実線で示す位置)よりもさらに前方の位置である。図4(d)に示すように、第4状態では、ソケット24の後端部が、可動部材22の内周面の第3領域37の内側に挿入され、ソケット24の外周面の第1領域48が、可動部材22の内周面の第3領域37に沿って配置される。また、可動部材22の第2段差部39がソケット24の段差部50に後方から当接し、且つソケット24の前面51が柱状部26の大径部26aの後面29に当接することによって、支持部材21に対する前方への可動部材22の移動が第2規制位置に規制される。すなわち、第2規制位置の可動部材22は、ソケット24を介して支持部材21に支持される。   As shown in FIG. 4D, in the second stopper 16 in the fourth state, the movable member 22 is disposed at the second restriction position in front of the first restriction position. As shown in FIG. 2, the second restriction position (the position indicated by the two-dot chain line in FIG. 2) is from the front surface 18 of the first stopper 15 in a state where the body 5 does not move in the front-rear direction with respect to the frame 2. The position is further forward than the first restriction position (the position indicated by the solid line in FIG. 2). As shown in FIG. 4D, in the fourth state, the rear end portion of the socket 24 is inserted inside the third region 37 on the inner peripheral surface of the movable member 22, and the first region on the outer peripheral surface of the socket 24 is inserted. 48 is arranged along the third region 37 of the inner peripheral surface of the movable member 22. Further, the second step portion 39 of the movable member 22 abuts on the step portion 50 of the socket 24 from the rear, and the front surface 51 of the socket 24 abuts on the rear surface 29 of the large-diameter portion 26a of the columnar portion 26. The movement of the movable member 22 forward with respect to 21 is restricted to the second restriction position. That is, the movable member 22 at the second restriction position is supported by the support member 21 via the socket 24.

次に、車両1の着座シート8に乗員が着座してシートベルト90(図1(a)参照)を締めた状態で、車両1が通常走行中に前面衝突した場合について説明する。   Next, a case will be described in which a frontal collision occurs during normal traveling of the vehicle 1 in a state where an occupant is seated on the seating seat 8 of the vehicle 1 and the seat belt 90 (see FIG. 1A) is fastened.

図5に示すように、車両1が衝突物100に前面衝突すると、先ずフレーム2(図1(a)参照)の前端部が衝突物100に衝突し、フレーム2の減速度が急激に増大し、ボディ5のフロア部材12(図1(a)参照)が慣性によってフレーム2に対して前方へ移動する。フロア部材12が前方へ移動すると、フロア部材12側の第1ストッパ15が、フレーム2側の第1状態(図4(a)参照)の第2ストッパ16の可動部材22に当接し、第2ストッパ16に対する前方への第1ストッパ15の移動が規制され、フレーム2に対する前方へのフロア部材12の移動が規制されてボディ5の減速度が急激に増大する。ボディ5の減速度が急激に増大すると、乗員は、シートベルト90が効き始めるまで着座シート8に対して前方へ慣性によって移動し、乗員の速度は、着座シート8側(フロア部材12側)の速度よりも速くなる。ボディ5の減速度が急激に増大して閾値Kを超えて、ECU14が、インフレータ33を作動させると、カラー23が支持部材21に対して後方へ移動して(図4(b)参照)、ソケット24が縮径し(図4(c)参照)、ヒューズボルト25が破断して、可動部材22が支持部材21に対して前方へ移動する。すなわち、カラー23、ソケット24、及びヒューズボルト25による支持部材21に対する可動部材22の第1規制位置への保持は、車両1が前面衝突して、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後、ボディ5の減速度が閾値Kを超えたとき(所定のタイミング)に、ECU14によるインフレータ33の作動によって解除される。可動部材22が支持部材21に対して前方へ移動すると、この移動に伴ってボディ5側(車体側)がフレーム2に対して前方へ移動し、可動部材22が第2規制位置に到達すると(図4(d)参照)、フレーム2に対する前方へのボディ5の移動が再度規制される。   As shown in FIG. 5, when the vehicle 1 collides front with the colliding object 100, the front end of the frame 2 (see FIG. 1 (a)) first collides with the colliding object 100, and the deceleration of the frame 2 increases rapidly. The floor member 12 (see FIG. 1A) of the body 5 moves forward relative to the frame 2 due to inertia. When the floor member 12 moves forward, the first stopper 15 on the floor member 12 side comes into contact with the movable member 22 of the second stopper 16 in the first state (see FIG. 4A) on the frame 2 side, and the second The movement of the first stopper 15 forward with respect to the stopper 16 is restricted, the movement of the floor member 12 forward with respect to the frame 2 is restricted, and the deceleration of the body 5 increases rapidly. When the deceleration of the body 5 increases rapidly, the occupant moves forward by inertia with respect to the seating seat 8 until the seat belt 90 begins to work, and the occupant speed is on the seating seat 8 side (floor member 12 side). Be faster than speed. When the deceleration of the body 5 suddenly increases and exceeds the threshold value K and the ECU 14 operates the inflator 33, the collar 23 moves rearward with respect to the support member 21 (see FIG. 4B). The socket 24 is reduced in diameter (see FIG. 4C), the fuse bolt 25 is broken, and the movable member 22 moves forward relative to the support member 21. That is, when the movable member 22 is held at the first restriction position with respect to the support member 21 by the collar 23, the socket 24, and the fuse bolt 25, the vehicle 1 collides with the front and the movable member of the second stopper 16 at the first restriction position. When the deceleration of the body 5 exceeds the threshold value K (predetermined timing) after 22 and the front surface 18 of the first stopper 15 come into contact with each other, the ECU 14 releases the inflator 33. When the movable member 22 moves forward with respect to the support member 21, the body 5 side (vehicle body side) moves forward with respect to the frame 2 along with this movement, and when the movable member 22 reaches the second restriction position ( 4 (d), the movement of the body 5 forward relative to the frame 2 is again restricted.

上記のように構成されたストッパ装置10では、車両1が前面衝突して、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後、ボディ5の減速度が閾値Kを超えるまでは、可動部材22が第1規制位置に保持されるので、その間、ボディ5側の運動エネルギーをフレーム2側で消費することができる。   In the stopper device 10 configured as described above, after the vehicle 1 has collided with the front surface, the movable member 22 of the second stopper 16 at the first restriction position and the front surface 18 of the first stopper 15 come into contact with each other. Since the movable member 22 is held at the first restricting position until the deceleration exceeds the threshold value K, the kinetic energy on the body 5 side can be consumed on the frame 2 side.

また、車両1が前面衝突して、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後、ボディ5の減速度が閾値Kを超えた時に、支持部材21に対する可動部材22の第1規制位置への保持を解除する。このため、フレーム2に対する前方へのボディ5の移動が許容され、ボディ5の減速度が減少してボディ5の速度低下が抑制される。その一方で、シートベルト90が効き始めると、乗員が着座シート8側に拘束されるので、乗員の減速度が増大して減速し始める。このように、ボディ5の減速度が減少する一方で、乗員の減速度が増大するので、乗員と着座シート8との速度差を小さくすることができる。その後、第2規制位置に到達した可動部材22が、フレーム2に対する前方へのボディ5の移動を再度規制する。すなわち、乗員とボディ5側の着座シート8との速度差を小さくした状態で、乗員をシートベルト90によって着座シート8に拘束してボディ5を減速させることができるので、車両1の前面衝突時に乗員の運動エネルギーを車体等(フレーム2を含む)の破損エネルギーで消費させる効率(ライドダウン効率)を高めることができ、乗員の傷害値指標の一つである乗員の最大減速度を低減して乗員の傷害を低減することができる。   Further, when the vehicle 1 collides with the front and the movable member 22 of the second stopper 16 in the first restricting position comes into contact with the front surface 18 of the first stopper 15 and then the deceleration of the body 5 exceeds the threshold value K. Then, the holding of the movable member 22 with respect to the support member 21 at the first restriction position is released. For this reason, the movement of the body 5 forward with respect to the frame 2 is allowed, the deceleration of the body 5 is reduced, and the speed reduction of the body 5 is suppressed. On the other hand, when the seat belt 90 starts to work, the occupant is restrained to the seating seat 8 side, so that the deceleration of the occupant increases and begins to decelerate. Thus, while the deceleration of the body 5 decreases, the deceleration of the occupant increases, so that the speed difference between the occupant and the seating seat 8 can be reduced. Thereafter, the movable member 22 that has reached the second restricting position restricts the movement of the body 5 forward relative to the frame 2 again. That is, in the state where the speed difference between the occupant and the seat 5 on the body 5 side is reduced, the occupant can be restrained to the seat 8 by the seat belt 90 and the body 5 can be decelerated. The efficiency (ride down efficiency) that consumes the kinetic energy of the occupant with the damaging energy of the vehicle body etc. (including the frame 2) can be increased, and the maximum deceleration of the occupant, which is one of the injury value indicators of the occupant, is reduced. Occupant injury can be reduced.

また、車両1の通常走行時に、第1規制位置の可動部材22が、カラー23、ソケット24、及びヒューズボルト25によって第1規制位置に保持され、第1規制位置の可動部材22と第1ストッパ15の前面18との間の可動空間52が、第1ストッパ15と第2ストッパ16との相対的な前後方向の移動を許容し、通常走行時のフレーム2に対するボディ5の前方への移動が許容される。このため、車両1の通常走行時に、フレーム2に弾性支持されたフロア部材12がフレーム2に対して前方へ移動した場合であっても、第1ストッパ15と第2ストッパ16とが干渉せず、フレーム2によるフロア部材12の弾性支持が損なわれることがないので、車両1の通常走行時の乗り心地の低下を抑制することができる。   Further, when the vehicle 1 is traveling normally, the movable member 22 at the first restriction position is held at the first restriction position by the collar 23, the socket 24, and the fuse bolt 25, and the movable member 22 and the first stopper at the first restriction position. The movable space 52 between the front face 18 and the front face 18 allows the first stopper 15 and the second stopper 16 to move relative to each other in the front-rear direction, so that the body 5 moves forward relative to the frame 2 during normal travel. Permissible. For this reason, even when the floor member 12 elastically supported by the frame 2 moves forward with respect to the frame 2 during normal traveling of the vehicle 1, the first stopper 15 and the second stopper 16 do not interfere with each other. In addition, since the elastic support of the floor member 12 by the frame 2 is not impaired, it is possible to suppress a decrease in riding comfort when the vehicle 1 is traveling normally.

なお、本実施形態では、車両1が前面衝突して、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後、ボディ5の減速度が閾値Kを超えたとき(所定のタイミング)に、支持部材21に対する可動部材22の第1規制位置への保持を解除したが、これに限定されるものではない。本発明における上記所定のタイミングとは、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後に、所定の条件を満たしたとき(本実施形態では、ボディ5の減速度が閾値Kを超えたとき)という意味である。例えば、第1規制位置の第2ストッパ16の可動部材22と第1ストッパ15の前面18とが当接した後、所定の時間が経過したときであってもよい。また、上記所定の条件を満たすか否かを判定する所定の閾値(上記閾値Kや上記所定の時間など)は、車両1の車速に応じて変化する値であってもよい。例えば、車両1に車速検出手段(車速センサ等)を設け、車速に対応する様々な所定の閾値を記憶部54に予め記憶し、車両1の前面衝突時の車速に応じた上記所定の閾値を用いて、上記所定の条件を満たすか否かを判定してもよい。また、上記所定の閾値は、車両1の衝突状態(例えば、車両1の前面の略全域が衝突物100と衝突するフルラップ衝突や、車両1の前面のうちの車幅方向の一側が衝突物100と衝突するオフセット衝突)に応じて変化する値であってもよい。また、乗員とボディ5との速度差を小さくするために可動部材22の移動規制を解除する最適な上記所定のタイミングは、車両の諸元(シートベルト90の性能やボディ5のつぶれ構造等)によって異なるので、その車両に応じたタイミングを実験やシミュレーション等によって求めて、求めたタイミングに応じた上記所定の閾値を設定してもよい。   In the present embodiment, after the vehicle 1 collides with the front and the movable member 22 of the second stopper 16 at the first restriction position contacts the front 18 of the first stopper 15, the deceleration of the body 5 is the threshold value. When K is exceeded (predetermined timing), the holding of the movable member 22 with respect to the support member 21 at the first restriction position is released, but the present invention is not limited to this. The predetermined timing in the present invention is when a predetermined condition is satisfied after the movable member 22 of the second stopper 16 in the first restriction position and the front surface 18 of the first stopper 15 are in contact (in this embodiment). , When the deceleration of the body 5 exceeds the threshold value K). For example, it may be when a predetermined time has elapsed after the movable member 22 of the second stopper 16 in the first restricting position and the front surface 18 of the first stopper 15 are in contact with each other. Further, the predetermined threshold (such as the threshold K or the predetermined time) for determining whether or not the predetermined condition is satisfied may be a value that changes according to the vehicle speed of the vehicle 1. For example, vehicle speed detection means (vehicle speed sensor or the like) is provided in the vehicle 1, various predetermined threshold values corresponding to the vehicle speed are stored in the storage unit 54 in advance, and the predetermined threshold value corresponding to the vehicle speed at the time of a frontal collision of the vehicle 1 is set. It may be used to determine whether or not the predetermined condition is satisfied. In addition, the predetermined threshold is a collision state of the vehicle 1 (for example, a full lap collision in which substantially the entire front surface of the vehicle 1 collides with the collision object 100, or one side of the front surface of the vehicle 1 in the vehicle width direction is the collision object 100. It may be a value that changes according to an offset collision). The optimum predetermined timing for releasing the movement restriction of the movable member 22 in order to reduce the speed difference between the passenger and the body 5 is the vehicle specifications (performance of the seat belt 90, collapsed structure of the body 5, etc.). Therefore, the predetermined threshold value corresponding to the obtained timing may be set by obtaining the timing according to the vehicle by experiments or simulations.

また、本実施形態では、インフレータ33を設け、インフレータ33が発生したガスによって支持部材21の柱状部26の開口部31内からカラー23の蓋部41を後方へ押し出したが、カラー23を後方へ移動させる方法は、これに限定されるものではない。例えば、柱状部26の開口部31内に、カラー23の蓋部41を直接的に後方へ押圧可能な押圧部材を設け、この押圧部材を後方へ移動させることによってカラー23を後方へ移動させてもよい。   Further, in the present embodiment, the inflator 33 is provided, and the lid portion 41 of the collar 23 is pushed backward from the opening 31 of the columnar portion 26 of the support member 21 by the gas generated by the inflator 33, but the collar 23 is moved backward. The method of moving is not limited to this. For example, a pressing member capable of directly pressing the lid portion 41 of the collar 23 backward is provided in the opening 31 of the columnar portion 26, and the collar 23 is moved rearward by moving the pressing member rearward. Also good.

また、支持部材21の形状や構造は、上記に限定されるものではなく、第1ストッパ15の前面18から前方へ離間して対向する位置に配置されてサイドメンバ3に固定されるものであればよい。   Further, the shape and structure of the support member 21 are not limited to those described above, and the support member 21 may be disposed at a position facing the front surface 18 of the first stopper 15 so as to be opposed to the front and fixed to the side member 3. That's fine.

また、可動部材22の形状や構造は、上記に限定されるものではなく、支持部材21と第1ストッパ15の前面18との間に配置され、支持部材21に前後方向に移動可能に支持されるものであればよい。   The shape and structure of the movable member 22 are not limited to the above, and are arranged between the support member 21 and the front surface 18 of the first stopper 15 and supported by the support member 21 so as to be movable in the front-rear direction. Anything is acceptable.

次に、本発明の第2実施形態を図面に基づいて説明する。なお、第2実施形態に係るストッパ装置60は、加速度センサ13とECU14とを備えない点、及び第2ストッパ61の構造が上記第1実施形態に係るストッパ装置10と異なる。また、第1実施形態と同様の構成については、同一の符号を付してその説明を省略する。   Next, 2nd Embodiment of this invention is described based on drawing. The stopper device 60 according to the second embodiment is different from the stopper device 10 according to the first embodiment in that the acceleration sensor 13 and the ECU 14 are not provided and the structure of the second stopper 61 is different. Moreover, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図6(a)及び図6(b)に示すように、第2ストッパ61は、支持部材(支持部)62と、可動部材(可動部)63と、ヒューズボルト(保持手段)64とを有する。   As shown in FIGS. 6A and 6B, the second stopper 61 includes a support member (support portion) 62, a movable member (movable portion) 63, and a fuse bolt (holding means) 64. .

支持部材62は、金属製の部材であって、サイドメンバ3の車幅方向外側面20から車幅方向外側に離間し、且つ第1ストッパ15の前面18から前方へ離間した位置に配置されて前後方向に延びる柱状部65を有する。柱状部65の前端部は、サイドメンバ3の車幅方向外側面20に対して固定される。   The support member 62 is a metal member, and is disposed at a position that is separated from the vehicle width direction outer side surface 20 of the side member 3 to the vehicle width direction outer side and that is spaced forward from the front surface 18 of the first stopper 15. It has the columnar part 65 extended in the front-back direction. The front end portion of the columnar portion 65 is fixed to the outer side surface 20 of the side member 3 in the vehicle width direction.

可動部材63は、金属製の部材であって、前方へ開口する有底の筒状に形成される。可動部材63の内周面66は、可動部材63の前端の開口67から連続して後方へ直線状に延び、可動部材63の内径は、支持部材62の挿入を許容するように、支持部材62の外形よりも僅かに大きく形成される。可動部材63は、支持部材62の柱状部65と第1ストッパ15の前面18との間に配置される。図6(a)に示すように、可動部材63には、開口67から柱状部65の後端部が挿入され、可動部材63の底面69(内部の後壁の前面)と柱状部65の後面68との間に空間70を区画した状態で、可動部材63が、ヒューズボルト64によって柱状部26に固定され、柱状部26に支持される。可動部材63がヒューズボルト64によって柱状部26に固定されていない状態では、可動部材63は、柱状部26に前後方向にスライド移動自在に支持される。   The movable member 63 is a metal member and is formed in a bottomed cylindrical shape that opens forward. The inner peripheral surface 66 of the movable member 63 extends linearly rearward continuously from the opening 67 at the front end of the movable member 63, and the inner diameter of the movable member 63 allows the support member 62 to be inserted. It is formed slightly larger than the outer shape. The movable member 63 is disposed between the columnar portion 65 of the support member 62 and the front surface 18 of the first stopper 15. As shown in FIG. 6A, the rear end portion of the columnar portion 65 is inserted into the movable member 63 from the opening 67, and the bottom surface 69 (front surface of the inner rear wall) of the movable member 63 and the rear surface of the columnar portion 65. The movable member 63 is fixed to the columnar portion 26 by the fuse bolt 64 and supported by the columnar portion 26 in a state in which the space 70 is partitioned between the columnar portion 68 and the columnar portion 26. In a state where the movable member 63 is not fixed to the columnar portion 26 by the fuse bolt 64, the movable member 63 is supported by the columnar portion 26 so as to be slidable in the front-rear direction.

ヒューズボルト64は、所定の大きさ以上の荷重が入力した際に破断可能なボルトであって、支持部材62に対する可動部材63の位置を第1規制位置(図6(a)に示す可動部材63の位置)に保持する。第1規制位置の可動部材63は、第1ストッパ15の前面18から前方に離間して、第1ストッパ15の前面18との間に可動空間52を区画する。これにより、第2ストッパ61の可動部材63は、車両1の通常走行時、及び車両1が前面衝突してヒューズボルト64が破断するまで、支持部材62に対する位置がヒューズボルト64によって第1規制位置に保持される。   The fuse bolt 64 is a bolt that can be broken when a load of a predetermined magnitude or more is input, and the position of the movable member 63 relative to the support member 62 is the first restriction position (the movable member 63 shown in FIG. 6A). At the position). The movable member 63 at the first restriction position is spaced forward from the front surface 18 of the first stopper 15 and defines a movable space 52 between the front surface 18 of the first stopper 15. As a result, the movable member 63 of the second stopper 61 is positioned at the first restriction position by the fuse bolt 64 when the vehicle 1 is traveling normally and until the vehicle 1 collides with the front and the fuse bolt 64 is broken. Retained.

車両1が前面衝突してフレーム2の前端部が衝突物100に衝突し、フレーム2に対してボディ5が前方へ移動すると、ボディ5側の第1ストッパ15が、フレーム2側の第2ストッパ61の第1規制位置の可動部材63に当接する(図6(a)の二点鎖線参照)。ヒューズボルト64は、可動部材63を介して入力する第1ストッパ15側からの荷重が上記所定の大きさ以上になるまで、支持部材62に対して可動部材63を第1規制位置に保持し、前記荷重が上記所定の大きさ以上になると破断する。ヒューズボルト64の破断によって、支持部材62に対する第1規制位置への可動部材63の保持が解除される。すなわち、ヒューズボルト64による支持部材62に対する可動部材63の第1規制位置への保持は、車両1が前面衝突した際に、第1規制位置の第2ストッパ61の可動部材63と第1ストッパ15の前面18とが当接した後、第1ストッパ15側からの荷重が上記所定の大きさ以上になったとき(所定のタイミング)に解除される。支持部材62に対する第1規制位置への可動部材63の保持が解除されると、可動部材63が、第1ストッパ15に押されて支持部材62に対して前方へ移動し、可動部材63の底面69と柱状部65の後面68とが当接する(図6(b)参照)。これにより、支持部材62に対する前方への可動部材63の移動が第2規制位置(図6(b)に示す可動部材63の位置)に規制される。第2規制位置の可動部材63は、支持部材62に前方から支持されて、前方への第1ストッパ15の移動を規制する。   When the vehicle 1 collides in front and the front end of the frame 2 collides with the colliding object 100, and the body 5 moves forward relative to the frame 2, the first stopper 15 on the body 5 side becomes the second stopper on the frame 2 side. 61 abuts on the movable member 63 at the first restriction position 61 (see the two-dot chain line in FIG. 6A). The fuse bolt 64 holds the movable member 63 in the first restricting position with respect to the support member 62 until the load from the first stopper 15 input via the movable member 63 becomes equal to or greater than the predetermined magnitude. It breaks when the load exceeds the predetermined size. When the fuse bolt 64 is broken, the holding of the movable member 63 at the first restriction position with respect to the support member 62 is released. That is, the holding of the movable member 63 to the first restriction position with respect to the support member 62 by the fuse bolt 64 is performed when the vehicle 1 collides frontward with the movable member 63 and the first stopper 15 of the second stopper 61 at the first restriction position. Is released when the load from the first stopper 15 side exceeds the predetermined magnitude (predetermined timing). When the holding of the movable member 63 at the first restriction position with respect to the support member 62 is released, the movable member 63 is pushed by the first stopper 15 and moves forward with respect to the support member 62, and the bottom surface of the movable member 63. 69 and the rear surface 68 of the columnar portion 65 abut (see FIG. 6B). As a result, the movement of the movable member 63 forward relative to the support member 62 is restricted to the second restriction position (position of the movable member 63 shown in FIG. 6B). The movable member 63 at the second restriction position is supported from the front by the support member 62 and restricts the movement of the first stopper 15 forward.

上記のように構成されたストッパ装置60では、車両1が前面衝突した際に、第1規制位置の第2ストッパ61の可動部材63と第1ストッパ15の前面18とが当接した後、第1ストッパ15側からの荷重が上記所定の大きさ以上になったときにヒューズボルト64が破断して、支持部材62に対する第1規制位置への可動部材63の保持を解除する。このため、支持部材62に対する第1規制位置への可動部材63の保持を解除するインフレータや、該インフレータを制御するためのECU等を設ける必要がなく、ストッパ装置60を簡易な構造にすることができる。   In the stopper device 60 configured as described above, when the vehicle 1 collides with the front, the movable member 63 of the second stopper 61 at the first restriction position and the front surface 18 of the first stopper 15 come into contact with each other. When the load from the one stopper 15 side becomes equal to or greater than the predetermined magnitude, the fuse bolt 64 is broken, and the holding of the movable member 63 at the first restriction position with respect to the support member 62 is released. For this reason, there is no need to provide an inflator for releasing the holding of the movable member 63 from the support member 62 to the first restriction position, an ECU for controlling the inflator, and the like, and the stopper device 60 can have a simple structure. it can.

以上、本発明について、上記実施形態に基づいて説明を行ったが、本発明は上記実施形態の内容に限定されるものではなく、当然に本発明を逸脱しない範囲で適宜変更が可能である。すなわち、この実施形態に基づいて当業者等によりなされる他の実施形態、実施例および運用技術等は全て本発明の範疇に含まれることは勿論である。   As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the content of the said embodiment, Of course, it can change suitably in the range which does not deviate from this invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

例えば、上記第1実施形態及び上記第2実施形態では、第1ストッパ15を、フロア部材12側(一方側)に固定し、第2ストッパ16,61の支持部材21,62を、第1ストッパ15の前面18よりも前方に配置してフレーム2側(他方側)に固定したが、これに限定されるものではなく、フレーム2側のストッパがフロア部材12側のストッパよりも前方に配置されていればよい。すなわち、第1ストッパ15を、フレーム2側(一方側)に固定し、第2ストッパ16,61の支持部材21,62を、第1ストッパ15の後面(対向面)よりも後方に配置してフロア部材12側(他方側)に固定してもよい。   For example, in the first embodiment and the second embodiment, the first stopper 15 is fixed to the floor member 12 side (one side), and the support members 21 and 62 of the second stoppers 16 and 61 are fixed to the first stopper. However, the present invention is not limited to this, and the stopper on the frame 2 side is arranged in front of the stopper on the floor member 12 side. It only has to be. That is, the first stopper 15 is fixed to the frame 2 side (one side), and the support members 21 and 62 of the second stoppers 16 and 61 are arranged behind the rear surface (opposing surface) of the first stopper 15. You may fix to the floor member 12 side (other side).

また、上記第1実施形態及び上記第2実施形態では、支持部材21,62に対して可動部材22,63を第1規制位置に保持する保持手段を、第2ストッパ16,61に設けたが、第2ストッパとは別体の保持装置(保持手段)を設けてもよい。   In the first embodiment and the second embodiment, the second stoppers 16 and 61 are provided with holding means for holding the movable members 22 and 63 in the first restricting position with respect to the support members 21 and 62. In addition, a holding device (holding means) separate from the second stopper may be provided.

また、可動部材22,63を支持部材21,62に対して第1規制位置に保持する保持手段や、上記所定のタイミングで支持部材21,62に対する可動部材22,63の第1規制位置への保持を解除する方法は、上記第1実施形態及び上記第2実施形態に限定されない。   Further, the holding means for holding the movable members 22 and 63 in the first restriction position with respect to the support members 21 and 62, and the movable members 22 and 63 to the first restriction position with respect to the support members 21 and 62 at the predetermined timing. The method for releasing the holding is not limited to the first embodiment and the second embodiment.

1:車両
2:フレーム
10,60:ストッパ装置
11:車室
12:フロア部材
15:第1ストッパ
16,61:第2ストッパ
18:第1ストッパの前面(対向面)
21,62:支持部材(支持部)
22,63:可動部材(可動部)
23:カラー(保持手段)
24:ソケット(保持手段)
25,64:ヒューズボルト(保持手段)
52:可動空間
1: Vehicle 2: Frame 10, 60: Stopper device 11: Vehicle compartment 12: Floor member 15: First stopper 16, 61: Second stopper 18: Front surface of first stopper (opposing surface)
21, 62: Support member (support part)
22, 63: Movable member (movable part)
23: Color (holding means)
24: Socket (holding means)
25, 64: fuse bolt (holding means)
52: Movable space

Claims (1)

車室の下方を区画するフロア部材がフレームによって弾性支持されるフレーム付車両のストッパ装置であって、
前後方向と交叉する対向面を有し、前記フレーム又は前記フロア部材の一方側に固定される第1ストッパと、
前記第1ストッパの前記対向面から離間して対向する位置に配置されて前記フレーム又は前記フロア部材の他方側に固定される支持部と、前記支持部と前記第1ストッパの前記対向面との間に配置されて前記支持部に支持される可動部とを有し、前記可動部が、前記対向面から離間して前記対向面との間に可動空間を区画する第1規制位置と、前記第1規制位置よりも前記支持部側の第2規制位置との間で、前記支持部に対して前後方向に移動可能な第2ストッパと、
前記車両の通常走行時に、前記第2ストッパの前記支持部に対する前記可動部の位置を前記第1規制位置に保持する保持手段と、を備え、
前記第1ストッパまたは前記第2ストッパのうち前記フロア部材側のストッパは、前記フレーム側のストッパよりも後方に配置され、
前記可動空間は、前記第2ストッパと前記第1ストッパとの相対的な前後方向の移動を許容し、
前記保持手段による前記支持部に対する前記可動部の保持は、前記車両が前面衝突して前記フロア部材が前記フレームに対して前方へ移動し、前記第1規制位置の前記第2ストッパの前記可動部と前記第1ストッパの前記対向面とが当接した後の所定のタイミングで解除され、
前記第2規制位置の前記第2ストッパの前記可動部は、前記支持部に支持されて、前記支持部側への前記第1ストッパの移動を規制する
ことを特徴とするフレーム付車両のストッパ装置。
A floor device that divides the lower part of the passenger compartment is a stopper device for a vehicle with a frame that is elastically supported by the frame,
A first stopper having a facing surface intersecting with the front-rear direction and fixed to one side of the frame or the floor member;
A support portion disposed at a position facing the first stopper so as to be separated from the facing surface and fixed to the other side of the frame or the floor member; and the supporting portion and the facing surface of the first stopper. A movable portion that is disposed between and supported by the support portion, the movable portion being spaced apart from the facing surface and defining a movable space with the facing surface; and A second stopper that is movable in the front-rear direction with respect to the support portion between the second restriction position on the support portion side relative to the first restriction position;
Holding means for holding the position of the movable portion with respect to the support portion of the second stopper at the first restriction position during normal travel of the vehicle;
Of the first stopper or the second stopper, the stopper on the floor member side is disposed behind the stopper on the frame side,
The movable space allows relative movement in the front-rear direction of the second stopper and the first stopper,
The movable unit is held by the holding unit with respect to the support unit when the vehicle collides with the front and the floor member moves forward with respect to the frame, and the movable unit of the second stopper at the first restriction position. And at a predetermined timing after the opposing surface of the first stopper abuts,
The movable part of the second stopper at the second restriction position is supported by the support part and restricts the movement of the first stopper toward the support part side. .
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07267132A (en) * 1994-03-30 1995-10-17 Nissan Shatai Co Ltd Car body structure
JPH10338162A (en) * 1997-06-06 1998-12-22 Isuzu Motors Ltd Body structure of framed vehicle
JP2003026039A (en) * 2001-07-18 2003-01-29 Honda Motor Co Ltd Occupant protecting device
JP2016078660A (en) * 2014-10-17 2016-05-16 いすゞ自動車株式会社 Body structure of vehicle with frame

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07267132A (en) * 1994-03-30 1995-10-17 Nissan Shatai Co Ltd Car body structure
JPH10338162A (en) * 1997-06-06 1998-12-22 Isuzu Motors Ltd Body structure of framed vehicle
JP2003026039A (en) * 2001-07-18 2003-01-29 Honda Motor Co Ltd Occupant protecting device
JP2016078660A (en) * 2014-10-17 2016-05-16 いすゞ自動車株式会社 Body structure of vehicle with frame

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