JP2008189155A - Car body strength adjusting device of vehicle - Google Patents

Car body strength adjusting device of vehicle Download PDF

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Publication number
JP2008189155A
JP2008189155A JP2007025846A JP2007025846A JP2008189155A JP 2008189155 A JP2008189155 A JP 2008189155A JP 2007025846 A JP2007025846 A JP 2007025846A JP 2007025846 A JP2007025846 A JP 2007025846A JP 2008189155 A JP2008189155 A JP 2008189155A
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Prior art keywords
buckling
plate
load
plates
vehicle
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JP2007025846A
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Japanese (ja)
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Shunji Suzuki
俊次 鈴木
Yuta Urushiyama
雄太 漆山
Yasuaki Gunji
泰明 郡司
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2007025846A priority Critical patent/JP2008189155A/en
Priority to US12/009,614 priority patent/US7708323B2/en
Publication of JP2008189155A publication Critical patent/JP2008189155A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To surely exhibit the shock absorbing effect by preventing a fall of buckling plates of a collapse strength variable device when a collision load in the oblique direction is applied to a bumper beam. <P>SOLUTION: The collapse strength variable device 13 having a front base board 35 fixed to the bumper beam and having a rear base board 16 fixed to a car body frame, has the right-left buckling plates 24 and 25 absorbing a shock by buckling by the load inputted in the car body longitudinal direction along the axis L, and a trapezoidal fall preventive plate 39 arranged between the right-left bucking plates 24 and 25 and preventing the fall of the buckling plates 24 and 25 by the load inputted in the inclined direction to the car body longitudinal direction. Thus, even when the load is inputted in the inclined direction to the car body longitudinal direction, the shock absorbing effect can be exhibited by surely buckling the buckling plates 24 and 25 by a component in the car body longitudinal direction of the load by preventing the fall of the buckling plates 24 and 15 by the fall preventive plate 39. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、バンパービームと車体フレームとの間に、車体前後方向の衝突荷重を受けて圧壊する圧壊強度が可変な圧壊強度可変装置を配置した車両の車体強度調整装置に関する。   The present invention relates to a vehicle body strength adjusting device for a vehicle in which a crushing strength variable device is provided between a bumper beam and a vehicle body frame, and a crushing strength variable device that can be crushed by receiving a collision load in the longitudinal direction of the vehicle body.

自動車のフロントサイドフレームの前端に取り付けられるバンパービームを、相互に平行に配置された前後一対のビーム部材と、両ビーム部材間に所定間隔で配置された複数の圧壊強度可変装置とで構成したものが、下記特許文献1により公知である。   A bumper beam attached to the front end of the front side frame of an automobile is composed of a pair of front and rear beam members arranged in parallel to each other and a plurality of variable crushing strength devices arranged at predetermined intervals between both beam members. Is known from Patent Document 1 below.

前記圧壊強度可変装置は衝突の衝撃で座屈するように隣接して配置された複数の形状記憶合金製の座屈板と、それらの座屈板を一体に連結した状態および相互に分離した状態に切り換えるアクチュエータとを備えており、座屈板を一体に連結した状態では座屈強度を高めて吸収可能な衝突エネルギーを増加させることができ、また座屈板を相互に分離した状態では座屈強度を低めて吸収可能な衝突エネルギーを減少させることができる。
特開2006−8106号公報
The crushing strength variable device has a plurality of shape memory alloy buckling plates arranged adjacent to each other so as to buckle by the impact of a collision, and these buckling plates are integrally connected and separated from each other. It is possible to increase the impact energy that can be absorbed by increasing the buckling strength when the buckling plates are connected together, and the buckling strength when the buckling plates are separated from each other. Can be absorbed to reduce the impact energy that can be absorbed.
JP 2006-8106 A

ところで、車両が正面衝突してバンパービームに車体前後方向の荷重が入力した場合には、圧壊強度可変装置の座屈板は横方向に倒れることなく座屈して衝撃吸収効果を発揮することができるが、車両が斜め衝突してバンパービームに車体前後方向に対して傾斜した方向の荷重が入力した場合には、座屈板が座屈することなく左右方向に倒れてしまい、充分な衝撃吸収効果を発揮することができなくなる可能性がある。   By the way, when the vehicle collides head-on and a load in the longitudinal direction of the vehicle body is input to the bumper beam, the buckling plate of the variable crushing strength device can buckle without falling laterally and exert an impact absorbing effect. However, if the vehicle collides diagonally and a load in the direction inclined with respect to the longitudinal direction of the vehicle body is input to the bumper beam, the buckling plate falls down in the lateral direction without buckling, and a sufficient impact absorbing effect is obtained. You may not be able to demonstrate it.

本発明は前述の事情に鑑みてなされたもので、バンパービームに斜め方向の衝突荷重が加わったときに圧壊強度可変装置の座屈板の倒れを防止して衝撃吸収効果を確実に発揮させることを目的とする。   The present invention has been made in view of the above-described circumstances, and when the bumper beam is subjected to an oblique collision load, the buckling plate of the variable crushing strength device is prevented from falling and the shock absorbing effect is reliably exhibited. With the goal.

上記目的を達成するために、請求項1に記載された発明によれば、バンパービームと車体フレームとの間に、車体前後方向の衝突荷重を受けて圧壊する圧壊強度が可変な圧壊強度可変装置を配置した車両の車体強度調整装置において、前記圧壊強度可変装置は、車体前後方向に入力する荷重により座屈して衝撃を吸収する座屈板と、車体前後方向に対して傾斜した方向に入力する荷重による前記座屈板の倒れを防止する倒れ防止板とを備えたことを特徴とする車両の車体強度調整装置が提案される。   In order to achieve the above object, according to the first aspect of the present invention, a crushing strength varying device capable of varying a crushing strength that is crushed by receiving a collision load in the longitudinal direction of the vehicle body between the bumper beam and the vehicle body frame. In the vehicle body strength adjusting device of the vehicle, the crushing strength varying device inputs the buckling plate that buckles by a load input in the longitudinal direction of the vehicle body and absorbs the impact, and the direction that is inclined with respect to the longitudinal direction of the vehicle body. There is proposed a vehicle body strength adjusting device for a vehicle, comprising a fall prevention plate for preventing the buckling plate from falling due to a load.

また請求項2に記載された発明によれば、請求項1の構成に加えて、倒れ防止板は、車体前後方向に入力する荷重に対する座屈剛性よりも、車体前後方向に対して傾斜した方向に入力する荷重に対する座屈剛性を高く設定したことを特徴とする車両の車体強度調整装置が提案される。   According to the second aspect of the present invention, in addition to the configuration of the first aspect, the fall prevention plate is inclined in the vehicle longitudinal direction rather than the buckling rigidity with respect to the load input in the vehicle longitudinal direction. A vehicle body strength adjusting device is proposed in which the buckling rigidity with respect to the load inputted to the vehicle is set high.

尚、実施の形態のフロントサイドフレーム12は本発明の車体フレームに対応し、実施の形態の第1、第2座屈板24,25は本発明の座屈板に対応し、実施の形態の第1、第2倒れ防止板39,39A,39B,41は本発明の倒れ防止板に対応する。   The front side frame 12 of the embodiment corresponds to the body frame of the present invention, and the first and second buckling plates 24 and 25 of the embodiment correspond to the buckling plate of the present invention. The first and second fall prevention plates 39, 39A, 39B, and 41 correspond to the fall prevention plates of the present invention.

請求項1の構成によれば、バンパービームと車体フレームとの間に配置した圧壊強度可変装置が、車体前後方向に入力する荷重により座屈して衝撃を吸収する座屈板と、車体前後方向に対して傾斜した方向に入力する荷重による座屈板の倒れを防止する倒れ防止板とを備えるので、車体前後方向に対して傾斜した方向に荷重が入力したときでも、倒れ防止板で座屈板の倒れを防止することで、前記荷重の車体前後方向の成分で座屈板を確実に座屈させて衝撃吸収効果を発揮させることができる。   According to the configuration of the first aspect, the variable crushing strength device disposed between the bumper beam and the vehicle body frame includes a buckling plate that buckles by a load input in the vehicle longitudinal direction and absorbs an impact, and the vehicle longitudinal direction. The anti-falling plate prevents the buckling plate from collapsing due to the load input in the direction inclined to the buckling plate. By preventing the tilting of the body, the buckling plate can be reliably buckled by the component of the load in the longitudinal direction of the vehicle body, and the impact absorbing effect can be exhibited.

また請求項2の構成によれば、車体前後方向に入力する荷重に対する倒れ防止板の座屈剛性よりも、車体前後方向に対して傾斜した方向に入力する荷重に対する倒れ防止板の座屈剛性を高く設定したので、車体前後方向に荷重が入力したときには、倒れ防止板を容易に座屈させて座屈板の荷重特性に影響を与えないようにし、また車体前後方向に対して傾斜した方向に荷重が入力したときには、倒れ防止板を座屈し難くして座屈板の倒れを防止し、座屈板を確実に座屈させて衝撃吸収性能を充分に発揮させることができる。   According to the second aspect of the present invention, the buckling rigidity of the fall prevention plate against the load input in the direction inclined with respect to the vehicle longitudinal direction is greater than the buckling rigidity of the fall prevention plate against the load inputted in the vehicle longitudinal direction. Since it is set high, when a load is input in the longitudinal direction of the vehicle body, the fall prevention plate is easily buckled so as not to affect the load characteristics of the buckling plate, and in a direction inclined with respect to the longitudinal direction of the vehicle body. When a load is input, it is difficult to buckle the fall-preventing plate to prevent the buckling plate from falling, and the buckling plate can be reliably buckled to fully exhibit the shock absorbing performance.

以下、本発明の実施の形態を添付の図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図1〜図13は本発明の第1の実施の形態を示すもので、図1は車両の車体前部の平面図、図2は図1の2部拡大図、図3は圧壊強度可変装置の斜視図、図4は圧壊強度可変装置の分解斜視図、図5は図2の5−5線断面図、図6は図5の6−6線断面図、図7は図2の7−7線断面図、図8は図2の8方向矢視図、図9は高荷重モードの作用説明図、図10は低荷重モードの作用説明図、図11は第1、第2倒れ防止板の作用説明図、図12は第1、第2座屈板の座屈時の作用説明図、図13は衝突時のバンパービームの伸び変形の作用説明図である。   1 to 13 show a first embodiment of the present invention. FIG. 1 is a plan view of a front part of a vehicle body of a vehicle, FIG. 2 is an enlarged view of part 2 of FIG. 1, and FIG. 4 is an exploded perspective view of the crushing strength varying device, FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 2, FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 7 is a sectional view taken along the line 7; FIG. 8 is a view taken in the direction of the arrow 8 in FIG. 2; FIG. FIG. 12 is a diagram for explaining the action of the first and second buckling plates during buckling, and FIG. 13 is a diagram for explaining the action of the bumper beam extending and deforming at the time of collision.

図1に示すように、四輪の車両の車体前部に配置されたバンパービーム11は、車幅方向に直線状に延びる本体部11aと、本体部11aの左右両端から車体後方に向けて傾斜する左右の傾斜部11b,11bとを備える。車体の両側部に前後方向に配置されたフロントサイドフレーム12,12の先端とバンパービーム11の左右の傾斜部11b,11bとが、圧壊強度を変更可能な圧壊強度可変装置13,13により接続される。左右の圧壊強度可変装置13,13は実質的に同じ構造を有しているため、以下、左側の圧壊強度可変装置13を例に取って構造を説明する。   As shown in FIG. 1, a bumper beam 11 disposed at the front of a vehicle body of a four-wheel vehicle is inclined toward the rear of the vehicle body from a body portion 11a extending linearly in the vehicle width direction and from both left and right ends of the body portion 11a. Left and right inclined portions 11b, 11b. Front ends of front side frames 12, 12 arranged in the front-rear direction on both sides of the vehicle body and left and right inclined portions 11 b, 11 b of the bumper beam 11 are connected by crushing strength variable devices 13, 13 that can change the crushing strength. The Since the left and right crushing strength varying devices 13 and 13 have substantially the same structure, the structure will be described below by taking the left crushing strength varying device 13 as an example.

図2〜図7に示すように、ボックス断面を有するフロントサイドフレーム12の前端開口を閉塞する端板12aに圧壊強度可変装置13の取付板14が4本のボルト15…で固定され、取付板14の前面に円板状の厚板で構成される後部基板16が4本のボルト17…で固定される。後部基板16の前面にスペーサ板18と、ヒンジ支持板19と、ブロック部材20とが重ね合わされ、ブロック部材20の肉抜き孔20aの内部から後向きに挿入された4本のボルト21…が、ヒンジ支持板19およびスペーサ板18を貫通して後部基板16に締結される。   As shown in FIGS. 2 to 7, the mounting plate 14 of the crushing strength varying device 13 is fixed to the end plate 12a that closes the front end opening of the front side frame 12 having a box cross section with four bolts 15. A rear substrate 16 composed of a disk-shaped thick plate is fixed to the front surface of 14 with four bolts 17. A spacer plate 18, a hinge support plate 19 and a block member 20 are superimposed on the front surface of the rear substrate 16, and four bolts 21 inserted backward from the inside of the lightening holes 20a of the block member 20 are hinges. The support plate 19 and the spacer plate 18 are penetrated and fastened to the rear substrate 16.

ブロック部材20の左右にそれぞれ配置されるヒンジ板22は、筒状に曲げられた一対のロックピン支持部22a,22aと、ロックピン支持部22a,22aから相互に離反するように延びる第1、第2ヒンジアーム22b,22cとを備える。第1ヒンジアーム22bの後端はヒンジ支持板19の外端の角部に溶接W1(図3参照)され、第2ヒンジアーム22cは鉄材製の第1座屈板24の外面に溶接W2(図3参照)される。第1座屈板24は中央部に座屈強度を調整するためのリブ24aを備えるとともに、外周部に4個の固定爪24b…を備える。形状記憶合金で第1座屈板24と概ね同寸法に形成した矩形状の第2座屈板25が、前記4個の固定爪24b…によって第1座屈板24の内面に重ね合わされるように固定される。   The hinge plates 22 respectively disposed on the left and right sides of the block member 20 have a pair of lock pin support portions 22a and 22a bent in a cylindrical shape, and first and second extending so as to be separated from the lock pin support portions 22a and 22a. Second hinge arms 22b and 22c are provided. The rear end of the first hinge arm 22b is welded to the corner of the outer end of the hinge support plate 19 (see FIG. 3), and the second hinge arm 22c is welded to the outer surface of the first buckling plate 24 made of iron (W2 ( 3). The first buckling plate 24 includes a rib 24a for adjusting the buckling strength at the center portion and four fixing claws 24b. A rectangular second buckling plate 25 formed of a shape memory alloy and approximately the same size as the first buckling plate 24 is superimposed on the inner surface of the first buckling plate 24 by the four fixing claws 24b. Fixed to.

形状記憶合金製の第2座屈板25は加工が難しく溶接にも適さないため、第1、第2座屈板24,25をボルト止めや溶接で一体化するのは困難であるが、第1、第2座屈板24,25を、加工が容易な鉄材製の第1座屈板24に設けた固定爪24b…で一体化したので、加工コストを削減しながら第1、第2座屈板24,25を確実に一体化することができる。   Since the second buckling plate 25 made of shape memory alloy is difficult to process and unsuitable for welding, it is difficult to integrate the first and second buckling plates 24 and 25 by bolting or welding. Since the first and second buckling plates 24 and 25 are integrated with the fixing claws 24b provided on the first buckling plate 24 made of iron that is easy to process, the first and second seats are reduced while reducing the processing cost. The bent plates 24 and 25 can be reliably integrated.

第1、第2座屈板24,25の前端の位置は揃っているが、第2座屈板25の後端は第1座屈板24の後端よりも僅かに後方にまで延びている(図2参照)。即ち、第1座屈板24の前後方向長さは、第2座屈板25の前後方向長さよりも僅かに短くなっている。   Although the positions of the front ends of the first and second buckling plates 24 and 25 are aligned, the rear end of the second buckling plate 25 extends slightly rearward from the rear end of the first buckling plate 24. (See FIG. 2). That is, the longitudinal length of the first buckling plate 24 is slightly shorter than the longitudinal length of the second buckling plate 25.

ブロック部材20の前面の左右両側に、上下方向に延びる断面U字状の支持溝20b,20bが形成されており、各々の支持溝20bに円筒状のブッシュ26が固定される。ブッシュ26の内部には2本のロックピン27,27が摺動自在に支持されており、相対向するロックピン27,27の側面にそれぞれ形成されたラック27a,27aに共通のピニオン28が噛合する。ブロック部材20の肉抜き孔20aの前方に形成されたモータ支持孔20cに支持されたモータ29の回転軸29aの両端に前記ピニオン28が固定される。よって、モータ29によりピニオン28が回転すると、ピニオン28にラック27a,27aを駆動された2本のロックピン27,27が相互に接近・離反する方向に移動する。   Support grooves 20b and 20b having a U-shaped cross section extending in the vertical direction are formed on the left and right sides of the front surface of the block member 20, and a cylindrical bush 26 is fixed to each support groove 20b. Two lock pins 27, 27 are slidably supported inside the bush 26, and a common pinion 28 meshes with racks 27a, 27a formed on the side surfaces of the lock pins 27, 27 facing each other. To do. The pinions 28 are fixed to both ends of a rotating shaft 29a of a motor 29 supported by a motor support hole 20c formed in front of the lightening hole 20a of the block member 20. Therefore, when the pinion 28 is rotated by the motor 29, the two lock pins 27, 27 having the racks 27a, 27a driven by the pinion 28 move in directions toward and away from each other.

通常、2本のロックピン27,27の先端のテーパー状の係合部27b,27bはブッシュ26の端部から突出しており、その先端の係合部27b,27bがヒンジ板22の一対のロックピン支持部22a,22aに圧入した受け部材51,51にそれぞれ係合する(図5および図6の実線参照)、ロックピン27,27がモータ29により駆動されてブッシュ26の内部に引き込まれると、その先端の係合部27b,27bがヒンジ板22の一対の受け部材51,51から離脱する(図5および図6の鎖線参照)。   Usually, the tapered engaging portions 27 b and 27 b at the tips of the two lock pins 27 and 27 protrude from the ends of the bush 26, and the engaging portions 27 b and 27 b at the tips are a pair of locks of the hinge plate 22. When the lock pins 27, 27 are driven by the motor 29 and are pulled into the bush 26 when engaged with the receiving members 51, 51 press-fitted into the pin support portions 22 a, 22 a (see solid lines in FIGS. 5 and 6). The engaging portions 27b, 27b at the tips are separated from the pair of receiving members 51, 51 of the hinge plate 22 (see the chain lines in FIGS. 5 and 6).

2分割された第1モータ支持板30,30がブロック部材20のモータ支持孔20cの周囲にそれぞれ2本のボルト31,31で固定されるとともに、第2モータ支持板32がブロック部材20のモータ支持孔20cの周囲に4本のボルト33…で固定されており、モータ29は第1、第2モータ支持板30,30;32に挟まれるように支持される。   The two divided first motor support plates 30, 30 are fixed around the motor support hole 20 c of the block member 20 with two bolts 31, 31, respectively, and the second motor support plate 32 is a motor of the block member 20. It is fixed around the support hole 20c by four bolts 33, and the motor 29 is supported so as to be sandwiched between the first and second motor support plates 30, 30;

一方、ブロック部材20の前面に、左右一対の内側座屈板支持板34,34と、厚肉円板状の前部基板35を一体に備えた外側座屈板支持板36とが重ね合わされ、8本のボルト37…,38…で一体に結合される。そして、各内側座屈板支持板34の左右方向外端を溝状の屈曲させた座屈板支持部34aが、重ね合わされた第1、第2座屈板24,25の前端に係合し、第1座屈板24に溶接W3(図3参照)される。   On the other hand, on the front surface of the block member 20, a pair of left and right inner buckling plate support plates 34, 34 and an outer buckling plate support plate 36 integrally provided with a thick disc-shaped front substrate 35 are superimposed, The eight bolts 37..., 38. And the buckling plate support part 34a which bent the left-right direction outer end of each inner buckling plate support plate 34 at the groove shape is engaged with the front end of the 1st, 2nd buckling plates 24 and 25 which were piled up. The first buckling plate 24 is welded W3 (see FIG. 3).

中間部に三角状のリブ39aが形成された第1倒れ防止板39は前後のフランジ39b,39cを備えており、前側のフランジ39bが前記ボルト37,37で内側座屈板支持板34および外側座屈板支持板36に共締めされるとともに、後側のフランジ39cが前記第1モータ支持板30のフランジ30aに2本のボルト40,40で固定される。また中間部に三角状のリブ41aが形成された第2倒れ防止板41は前後のフランジ41b,41cを備えており、前側のフランジ41bが前記ボルト38,38で内側座屈板支持板34および外側座屈板支持板36に共締めされるとともに、後側のフランジ41cが前記第2モータ支持板32に前記ボルト33,33で共締めされる。   The first fall-preventing plate 39 having a triangular rib 39a formed at the intermediate portion is provided with front and rear flanges 39b and 39c. The front flange 39b is the bolts 37 and 37 and the inner buckling plate support plate 34 and the outer side are provided. While being fastened together with the buckling plate support plate 36, the rear flange 39 c is fixed to the flange 30 a of the first motor support plate 30 with two bolts 40, 40. Further, the second fall prevention plate 41 having a triangular rib 41a formed at the intermediate portion is provided with front and rear flanges 41b and 41c, and the front flange 41b is formed by the bolts 38 and 38 with the inner buckling plate support plate 34 and While being fastened to the outer buckling plate support plate 36, the rear flange 41 c is fastened to the second motor support plate 32 by the bolts 33 and 33.

第1、第2倒れ防止板39,41は概ね台形状の部材であって、その上底に対応する前縁が内側座屈板支持板34および外側座屈板支持板36に固定され、その下底に対応する後縁がブロック部材20に固定され、その一対の斜辺に対応する左右の側縁が第2座屈板25の内面に僅かな隙間α(図2参照)を介して対向する。   The first and second fall prevention plates 39, 41 are substantially trapezoidal members, and the front edges corresponding to the upper bases thereof are fixed to the inner buckling plate support plate 34 and the outer buckling plate support plate 36, respectively. The rear edge corresponding to the lower base is fixed to the block member 20, and the left and right side edges corresponding to the pair of oblique sides face the inner surface of the second buckling plate 25 with a slight gap α (see FIG. 2). .

図2および図8から明らかなように、バンパービーム11と圧壊強度可変装置13とを接続する取付ブラケット42は、車体前後方向に延びる軸線Lに対して斜めに傾斜してバンパービーム11の傾斜部11bと平行な第1取付部42aと、圧壊強度可変装置13の前部基板35と平行な第2取付部42bと、車体前後方向に延びて第1、第2取付部42a,42bを連結する複数の薄肉のリブ42c…とを備える。バンパービーム11の傾斜部11bの後面には左右方向に長い4個の第1ボルト孔11c…が形成されており、これらの第1ボルト孔11c…と取付ブラケット42の第1取付部42aの第2ボルト孔42d…とが4本のボルト43…および4個のナット44…で締結される。そして取付ブラケット42の第2取付部42bと圧壊強度可変装置13の前部基板35とが2本のボルト45,45で締結される。   As apparent from FIGS. 2 and 8, the mounting bracket 42 for connecting the bumper beam 11 and the crushing strength varying device 13 is inclined with respect to the axis L extending in the longitudinal direction of the vehicle body, and the inclined portion of the bumper beam 11 is inclined. 11b, a first mounting portion 42a parallel to the crushing strength variable device 13, a second mounting portion 42b parallel to the front substrate 35, and the first and second mounting portions 42a, 42b extending in the longitudinal direction of the vehicle body. And a plurality of thin ribs 42c. Four first bolt holes 11c, which are long in the left-right direction, are formed on the rear surface of the inclined portion 11b of the bumper beam 11, and the first bolt holes 11c ... and the first mounting portions 42a of the mounting bracket 42 are provided. The two bolt holes 42d are fastened by four bolts 43 and four nuts 44. Then, the second mounting portion 42 b of the mounting bracket 42 and the front substrate 35 of the crushing strength varying device 13 are fastened by two bolts 45, 45.

このように構成された圧壊強度可変装置13は、図1および図2に示すように、伸縮自在なゴム製のブーツ46内に収納された状態で、ブーツ46の後部開口46aが円形の後部基板16の外周に嵌合してバンド47で締結され、ブーツ46の前部開口46bが円形の前部基板35の外周に嵌合してバンド48で締結される。これにより圧壊強度可変装置13に水や泥が付着するのをブーツ46で遮り、その耐久性を高めるとともに作動の確実性を保証することができる。   As shown in FIGS. 1 and 2, the crushing strength varying device 13 configured as described above is housed in a stretchable rubber boot 46, and the rear opening 46 a of the boot 46 is a circular rear substrate. The front opening 46 b of the boot 46 is fitted to the outer periphery of the circular front substrate 35 and fastened by the band 48. As a result, the boot 46 can block water and mud from adhering to the crushing strength varying device 13, thereby improving the durability and ensuring the reliability of the operation.

図1〜図4から明らかなように、モータ29から延びるハーネス49は、第1モータ支持板30,30の開口30bを通過した後、ブロック部材20の開口20d、ヒンジ支持板19の開口19a、スペーサ板18の開口18aおよび後部基板16の開口16aに装着したグロメット52を通過し、更に取付板14の開口14aおよびフロントサイドフレーム12の端板12aの開口12bを通過してフロントサイドフレーム12の内部に導かれる。従って、ブーツ46に孔を形成してハーネス49を引き出す必要がなくなってブーツ46の防水性が確保されるだけでなく、ハーネス49を閉断面のフロントサイドフレーム12の内部に導くことにより、ハーネス49を水や泥から保護することができる。   As apparent from FIGS. 1 to 4, the harness 49 extending from the motor 29 passes through the opening 30 b of the first motor support plate 30, 30, and then the opening 20 d of the block member 20, the opening 19 a of the hinge support plate 19, It passes through the grommet 52 attached to the opening 18a of the spacer plate 18 and the opening 16a of the rear substrate 16, and further passes through the opening 14a of the mounting plate 14 and the opening 12b of the end plate 12a of the front side frame 12, and Led inside. Accordingly, it is not necessary to form a hole in the boot 46 and pull out the harness 49 to ensure the waterproof property of the boot 46, and the harness 49 is guided to the inside of the front side frame 12 having a closed cross section. Can be protected from water and mud.

次に、上記構成を備えた本発明の第1の実施の形態の作用を説明する。   Next, the operation of the first embodiment of the present invention having the above configuration will be described.

通常時、圧壊強度可変装置13のロックピン27,27はブッシュ26の両端から突出しており、従ってロックピン27,27の先端の係合部27b,27bはヒンジ板22の受け部材51,51に係合している(図5および図6の実線参照)。この状態で車両が正面衝突してバンパービーム11に車体後方への衝突荷重が加わると、バンパービーム11およびフロントサイドフレーム12間に配置された圧壊強度可変装置13の前部基板35および後部基板16が前後方向に圧縮される。   Normally, the lock pins 27 and 27 of the variable crushing strength device 13 protrude from both ends of the bush 26, and therefore the engaging portions 27 b and 27 b at the tips of the lock pins 27 and 27 are formed on the receiving members 51 and 51 of the hinge plate 22. They are engaged (see solid lines in FIGS. 5 and 6). When the vehicle collides head-on in this state and a collision load to the rear of the vehicle body is applied to the bumper beam 11, the front board 35 and the rear board 16 of the crushing strength varying device 13 disposed between the bumper beam 11 and the front side frame 12. Is compressed in the front-rear direction.

このとき、図9に示すように、ヒンジ板22のロックピン支持部22a,22aはロックピン27,27によって左右方向への移動が規制されており、かつロックピン27,27は強固なブロック部材20によって後方への移動が規制されているため、重ね合わされた第1、第2座屈板24,25が前後方向に圧縮されて座屈することで、圧壊強度可変装置13は大きな衝突エネルギーを吸収することができる(高荷重モード)。   At this time, as shown in FIG. 9, the lock pin support portions 22a and 22a of the hinge plate 22 are restricted from moving in the left and right directions by the lock pins 27 and 27, and the lock pins 27 and 27 are strong block members. Since the rearward movement is restricted by 20, the overlapped first and second buckling plates 24 and 25 are compressed in the front-rear direction and buckled, so that the crushing strength varying device 13 absorbs a large collision energy. (High load mode).

一方、車両に搭載されたレーダー装置やテレビカメラで検知した外部状況と、車速センサで検知した車速とから、衝撃を小さくする必要がある衝突が予測されると、モータ29が作動してピニオン28およびラック27a,27aを介して一対のロックピン27,27をブッシュ26の内部に後退させることで、ロックピン27,27の係合部27b,27bをヒンジ板22の受け部材51,51から離脱させる(図5および図6の鎖線参照)。その結果、ヒンジ板22のロックピン支持部22a,22aは左右方向への移動が可能になり、図10に示すように、第1、第2座屈板24,25は座屈することなく折り畳まれ、圧壊強度可変装置13は小さな荷重で圧壊してバンパービーム11の後退を許容する(低荷重モード)。   On the other hand, when a collision that requires a reduction in impact is predicted from the external situation detected by a radar device or a TV camera mounted on the vehicle and the vehicle speed detected by the vehicle speed sensor, the motor 29 is activated and the pinion 28 is operated. Further, by retracting the pair of lock pins 27, 27 into the bush 26 via the racks 27a, 27a, the engaging portions 27b, 27b of the lock pins 27, 27 are detached from the receiving members 51, 51 of the hinge plate 22. (See the chain line in FIGS. 5 and 6). As a result, the lock pin support portions 22a and 22a of the hinge plate 22 can move in the left-right direction, and the first and second buckling plates 24 and 25 are folded without buckling as shown in FIG. The crushing strength varying device 13 crushes with a small load and allows the bumper beam 11 to retreat (low load mode).

上述した高荷重モードおよび低荷重モードの何れの場合にも、第1、第2倒れ防止板39,41は前後方向の圧縮荷重を受けて座屈するが、元々第1、第2倒れ防止板39,41は薄板で構成されており、かつ中央部に三角形のリブ39a,41aが形成されているため、前後方向の荷重を受けると極めて容易に座屈し、圧壊強度可変装置13の前後方向のエネルギー吸収特性に影響を及ぼすことはない。従って、圧壊強度可変装置13を低荷重で圧壊させたい低荷重モードにおいても、第1、第2倒れ防止板39,41によって圧壊強度可変装置13が圧壊し難くなる虞はない。尚、図9および図10において第1、第2倒れ防止板39,41は図示を省略している。   In both the high load mode and the low load mode described above, the first and second fall prevention plates 39 and 41 are buckled by receiving a compressive load in the front-rear direction, but originally the first and second fall prevention plates 39. , 41 are formed of thin plates, and triangular ribs 39a, 41a are formed at the center, so that they are buckled very easily when subjected to a load in the front-rear direction, and energy in the front-rear direction of the crushing strength varying device 13 Does not affect the absorption characteristics. Accordingly, even in the low load mode in which the crushing strength varying device 13 is desired to be crushed with a low load, there is no possibility that the crushing strength varying device 13 is not easily crushed by the first and second collapse prevention plates 39 and 41. 9 and 10, the first and second fall prevention plates 39 and 41 are not shown.

第1、第2倒れ防止板39,41が機能を発揮するのは、斜め衝突時によってバンパービーム11に車体前後方向に対して傾斜した衝突荷重が加わった場合である。斜め衝突時の衝突荷重は、バンパービーム11を車体後方に移動させる前後方向荷重と、バンパービーム11を車幅方向に移動させる左右方向荷重とに分解される。   The first and second fall prevention plates 39 and 41 perform their functions when a collision load inclined with respect to the longitudinal direction of the vehicle body is applied to the bumper beam 11 during an oblique collision. The collision load at the time of the oblique collision is decomposed into a front-rear direction load that moves the bumper beam 11 rearward of the vehicle body and a left-right direction load that moves the bumper beam 11 in the vehicle width direction.

図11(A)に模式的に示すように、左右方向荷重が圧壊強度可変装置13に入力すると、前部基板35および後部基板16間に剪断力が作用するため、右側の第1、第2座屈板24,25と左側の第1、第2座屈板24,25とが座屈することなく左右方向に倒れてしまい、高荷重モードであっても殆どエネルギー吸収性能を発揮できなくなる可能性がある。   As schematically shown in FIG. 11A, when a lateral load is input to the crushing strength varying device 13, a shearing force acts between the front substrate 35 and the rear substrate 16, and therefore the first and second on the right side. There is a possibility that the buckling plates 24 and 25 and the first and second buckling plates 24 and 25 on the left side will collapse in the left-right direction without buckling, and even in the high load mode, the energy absorbing performance cannot be exhibited. There is.

しかしながら、図11(B)に示すように、本実施の形態では、相対向する左右の第2座屈板25,25に挟まれた台形状の空間に合計4枚の第1、第2倒れ防止板39,41が配置されているため、これらの第1、第2倒れ防止板39,41が、左右の第1、第2座屈板24,25が図11(A)の状態に倒れるのを抑制し、圧壊強度可変装置13を前後方向に確実に圧壊してエネルギー吸収性能を効率的に発揮させることができる。   However, as shown in FIG. 11B, in the present embodiment, a total of four first and second collapses in a trapezoidal space sandwiched between the left and right second buckling plates 25, 25 facing each other. Since the prevention plates 39 and 41 are arranged, these first and second fall prevention plates 39 and 41 fall on the left and right first and second buckling plates 24 and 25 in the state shown in FIG. The crushing strength varying device 13 can be reliably crushed in the front-rear direction, and the energy absorption performance can be efficiently exhibited.

また第1、第2倒れ防止板39,41に三角形状のリブ39a,41a(図7参照)を形成したので、座屈が開始される荷重を低下させ、荷重変動の少ない特性を得ることができる。尚、第1、第2倒れ防止板39,41と第2座屈板25との間には僅かな隙間α(図2参照)が存在するが、第1、第2座屈板24,25が僅かに倒れると第2座屈板25が第1、第2倒れ防止板39,41に接触するので支障はない。   In addition, since the triangular ribs 39a and 41a (see FIG. 7) are formed on the first and second collapse prevention plates 39 and 41, the load at which buckling is started can be reduced, and a characteristic with little load fluctuation can be obtained. it can. A slight gap α (see FIG. 2) exists between the first and second collapse prevention plates 39 and 41 and the second buckling plate 25, but the first and second buckling plates 24 and 25 are present. Since the second buckling plate 25 comes into contact with the first and second fall prevention plates 39 and 41 when there is a slight fall, there is no problem.

ところで、圧壊強度可変装置13が大きな荷重で圧壊する高荷重モードでは、座屈する第1、第2座屈板24,25が、圧壊の開始から終了までの間、一定の高い荷重を発生することが望ましい。   By the way, in the high load mode in which the variable crushing strength device 13 is crushed with a large load, the first and second buckling plates 24 and 25 that buckle generate a constant high load from the start to the end of the crushing. Is desirable.

図12の時間(変位量)および荷重の関係を示すグラフから明らかなように、一般的な鉄材よりなる第1座屈板24は、変位量の増加に伴って荷重が急激に高まってピークに達した後に漸減する特性を有している。それに対して、形状記憶合金よりなる第2座屈板25は、変位量の増加に伴って荷重が急激に高まってピークに達した後に急激に減少してボトムに達し、そこから漸増する特性を有している。従って、第1座屈板24および第2座屈板25を単独で使用しても、圧壊の開始から終了まで一定の高い荷重を発生することは不可能である。しかしながら、先ず時刻t1に第2座屈板25が変形を開始して時刻t2にピークに達したときに、第1座屈板24の変形が開始するように設定すると、時刻t2から時刻t3を経て時刻t4に至る間の第2座屈板25の荷重の減少・増加特性と、第1座屈板24の荷重の増加・減少特性とが上下対称な特性となるため、それらを足し合わせた特性を実線で示す理想的な特性、つまり圧壊の開始から終了まで一定の高い荷重を発生する特性とすることができる。   As is apparent from the graph showing the relationship between time (displacement) and load in FIG. 12, the first buckling plate 24 made of a general iron material has a peak due to a sudden increase in load as the amount of displacement increases. It has a characteristic of gradually decreasing after reaching the limit. On the other hand, the second buckling plate 25 made of a shape memory alloy has a characteristic in which the load rapidly increases as the displacement increases, reaches a peak, rapidly decreases, reaches the bottom, and gradually increases from there. Have. Therefore, even if the first buckling plate 24 and the second buckling plate 25 are used alone, it is impossible to generate a constant high load from the start to the end of crushing. However, if the first buckling plate 24 is set to start deformation when the second buckling plate 25 starts deformation at time t1 and reaches a peak at time t2, the time t3 is changed from time t2 to time t3. After that, since the decrease / increase characteristic of the load of the second buckling plate 25 and the increase / decrease characteristic of the load of the first buckling plate 24 are symmetric in the vertical direction until time t4, they are added together. The characteristic can be an ideal characteristic indicated by a solid line, that is, a characteristic that generates a constant high load from the start to the end of crushing.

第1、第2座屈板24,25が変形を開始するタイミングの差は、次のようにして得ることができる。即ち、重ね合わされて固定爪24b…で一体化された第1、第2座屈板24,25の前後方向長さは、形状記憶合金製の第2座屈板25の方が鉄材製の第1座屈板24よりも僅かに長くなっているので、長い方の第2座屈板25が先に変形を開始し(時刻t1)、第2座屈板25が所定量圧縮された後に、短い方の第1座屈板24を第1座屈板25と共に変形させることができる(時刻t2)。   The difference in timing at which the first and second buckling plates 24 and 25 start to deform can be obtained as follows. That is, the length in the front-rear direction of the first and second buckling plates 24 and 25 that are overlapped and integrated by the fixing claws 24b is the same as that of the second buckling plate 25 made of shape memory alloy. Since it is slightly longer than one buckling plate 24, the longer second buckling plate 25 starts to deform first (time t1), and after the second buckling plate 25 is compressed by a predetermined amount, The shorter first buckling plate 24 can be deformed together with the first buckling plate 25 (time t2).

形状記憶合金製の第2座屈板25は鉄材に比べて加工が難しいため、単純な板形状としてコストを低減しているが、加工が容易な鉄材製の第1座屈板24の板厚を設定したり所定の形状のリブ24aを形成したりすることで、時刻t2以降に第2座屈板25が発生する荷重と上下対称な荷重を発生し得るように、第1座屈板24の荷重発生特性を調整することができる。   Since the second buckling plate 25 made of shape memory alloy is difficult to process compared to the iron material, the cost is reduced as a simple plate shape, but the thickness of the first buckling plate 24 made of iron material that is easy to process is reduced. Is set or a rib 24a having a predetermined shape is formed, so that a load symmetrical to the load generated by the second buckling plate 25 after time t2 can be generated. The load generation characteristics can be adjusted.

尚、実施の形態では第1座屈板24を鉄材製としているが、アルミニウム材等の他の材料を採用することができる。   In the embodiment, the first buckling plate 24 is made of iron, but other materials such as aluminum can be used.

ところで、図13に示すように、車両が正面衝突してバンパービーム11に後向きの荷重が作用すると、取付ブラケット42の脆弱なリブ42c…が圧壊することで、本体部11aに対して後方に傾斜していた傾斜部11bの角度が本体部11aと略平行になるように変形するため、バンパービーム11の左右方向の寸法がβだけ伸びることになる。このとき、仮にバンパービーム11と圧壊強度可変装置13とが左右方向に相対移動不能に結合されていると、バンパービーム11が左右方向に伸びたことで圧壊強度可変装置13が車体外側に倒れてしまい、衝突荷重を効果的に吸収できなくなる可能性がある。   By the way, as shown in FIG. 13, when the vehicle collides head-on and a rearward load is applied to the bumper beam 11, the fragile ribs 42c of the mounting bracket 42 are crushed and tilted backward with respect to the main body 11a. Since the angle of the inclined portion 11b is deformed so as to be substantially parallel to the main body portion 11a, the dimension in the left-right direction of the bumper beam 11 is extended by β. At this time, if the bumper beam 11 and the crushing strength varying device 13 are coupled so as not to move relative to each other in the left-right direction, the crushing strength varying device 13 falls to the outside of the vehicle body due to the bumper beam 11 extending in the left-right direction. Therefore, there is a possibility that the collision load cannot be absorbed effectively.

しかしながら、本実施の形態では、図8に示すように、バンパービーム11の傾斜部11bの後面に形成された第1ボルト孔11c…が左右方向に長い長孔とされているため、その第1ボルト孔11c…および取付ブラケット42の第2ボルト孔42d…を貫通するボルト43…に対して、バンパービーム11の傾斜部11bが車体外側にスライドすることができる。よって、正面衝突時にバンパービーム11が左右方向に伸びても圧壊強度可変装置13が車体外側に倒れるのを防止し、圧壊強度可変装置13の機能を確実に発揮させることができる。   However, in the present embodiment, as shown in FIG. 8, the first bolt holes 11 c formed on the rear surface of the inclined portion 11 b of the bumper beam 11 are elongated holes in the left-right direction. The inclined portion 11b of the bumper beam 11 can slide to the outside of the vehicle body with respect to the bolts 43 passing through the bolt holes 11c and the second bolt holes 42d of the mounting bracket 42. Therefore, even if the bumper beam 11 extends in the left-right direction at the time of a frontal collision, the crushing strength varying device 13 can be prevented from falling to the outside of the vehicle body, and the function of the crushing strength varying device 13 can be exhibited reliably.

更に、低荷重モードにおいて前後方向に変形し易くなるため、第1、第2倒れ防止板39,41の圧縮強度を低下させることなく目標の荷重設定が可能となる。従って、左右方向の横倒れ強度の低下を防止することができる。   Furthermore, since it becomes easy to deform in the front-rear direction in the low load mode, it is possible to set a target load without reducing the compressive strength of the first and second fall prevention plates 39 and 41. Accordingly, it is possible to prevent a decrease in the lateral collapse strength in the left-right direction.

次に、図14に基づいて本発明の第2の実施の形態を説明する。   Next, a second embodiment of the present invention will be described with reference to FIG.

第2の実施の形態は第1の実施の形態の変形であって、第1倒れ防止板39のリブ39aの頂部に沿って2個のスリット39d,39dを形成したものである。このスリット39d,39dによって、斜め方向の荷重に対する座屈剛性を殆ど低下させることなく、車体前後方向の荷重で第1倒れ防止板39を一層容易に座屈させることができる。尚、第2倒れ防止板41にも同様のスリットを設けることができる。   The second embodiment is a modification of the first embodiment, in which two slits 39d and 39d are formed along the tops of the ribs 39a of the first fall prevention plate 39. By the slits 39d and 39d, the first fall prevention plate 39 can be more easily buckled by the load in the longitudinal direction of the vehicle body, with almost no decrease in buckling rigidity against the load in the oblique direction. A similar slit can be provided in the second fall prevention plate 41.

次に、図15に基づいて本発明の第3の実施の形態を説明する。   Next, a third embodiment of the present invention will be described with reference to FIG.

第1の実施の形態では第1倒れ防止板39が三角形状のリブ39aを備えているが、第3の実施の形態では第1倒れ防止板39の全体が円弧状に湾曲している。従って、第1倒れ防止板39は、斜め方向の荷重に対しては強い座屈剛性を発揮しながら、車体前後方向の荷重で容易に座屈することができる。尚、第2倒れ防止板41にも同様の円弧形状にすることができる。   In the first embodiment, the first fall prevention plate 39 includes a triangular rib 39a. However, in the third embodiment, the entire first fall prevention plate 39 is curved in an arc shape. Therefore, the first fall prevention plate 39 can be easily buckled by a load in the longitudinal direction of the vehicle body while exhibiting a strong buckling rigidity against a load in an oblique direction. Note that the second fall prevention plate 41 can have a similar arc shape.

次に、図16および図17に基づいて本発明の第4の実施の形態を説明する。   Next, a fourth embodiment of the present invention will be described with reference to FIGS.

第1の実施の形態では薄板製の第1、第2倒れ防止板39,41を備えているが、図16に示すように、第4の実施の形態では2分割された厚板製の倒れ防止板39A,39Bを備えている。両倒れ防止板39A,39Bの左右方向外端は第1座屈板24の側縁に固定され、内端どうしが僅かな間隙γを介して対向している。   In the first embodiment, the first and second fall prevention plates 39 and 41 made of a thin plate are provided. However, as shown in FIG. 16, in the fourth embodiment, the fall of a thick plate divided into two parts is performed. Prevention plates 39A and 39B are provided. The outer ends in the left-right direction of both fall prevention plates 39A, 39B are fixed to the side edges of the first buckling plate 24, and the inner ends are opposed to each other with a slight gap γ.

高荷重モードで第1、第2座屈板24,25が座屈するときは、倒れ防止板39A,39Bは第1座屈板24から剥がれて分離し、低荷重モードで第1、第2座屈板24,25が倒れるときは、倒れ防止板39A,39Bは前記隙間γが広がるように移動するため、圧壊強度可変装置13の圧壊に影響を殆ど影響を与えない(図17(A)参照)。   When the first and second buckling plates 24 and 25 are buckled in the high load mode, the fall prevention plates 39A and 39B are peeled off and separated from the first buckling plate 24, and the first and second seats in the low load mode. When the bent plates 24 and 25 fall down, the fall prevention plates 39A and 39B move so as to widen the gap γ, so that they hardly affect the crushing of the crushing strength varying device 13 (see FIG. 17A). ).

しかしながら、斜め方向の荷重が入力して右側および左側の第1、第2座屈板24,25が横方向に倒れようとすると、前記隙間γが消滅して倒れ防止板39A,39Bどうしが当接して剪断力を支持することで、左右の第1、第2座屈板24,25の横方向への倒れを確実に防止することができる(図17(B)参照)。   However, when the load in the oblique direction is input and the first and second buckling plates 24, 25 on the right side and the left side are about to fall sideways, the gap γ disappears and the fall prevention plates 39A, 39B hit each other. By contacting and supporting the shearing force, the left and right first and second buckling plates 24 and 25 can be reliably prevented from falling in the lateral direction (see FIG. 17B).

従って、この第4実施の形態によっても、上述した第1〜第3実施の形態と同様の作用効果を達成することができる。   Therefore, also according to the fourth embodiment, the same operational effects as those of the first to third embodiments can be achieved.

以上、本発明の実施の形態を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。   The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

例えば、実施の形態ではフロントバンパーのバンパービーム11の圧壊強度可変装置13について説明したが、本発明はリヤバンパーのバンパービームの圧壊強度可変装置13に対しても適用することができる。   For example, the embodiment has described the crushing strength varying device 13 for the bumper beam 11 of the front bumper, but the present invention can also be applied to the crushing strength varying device 13 for the bumper beam of the rear bumper.

第1の実施の形態に係る車両の車体前部の平面図The top view of the vehicle body front part of the vehicle which concerns on 1st Embodiment 図1の2部拡大図2 enlarged view of FIG. 圧壊強度可変装置の斜視図Perspective view of variable crushing strength device 圧壊強度可変装置の分解斜視図Exploded perspective view of variable crushing strength device 図2の5−5線断面図Sectional view along line 5-5 in FIG. 図5の6−6線断面図6-6 sectional view of FIG. 図2の7−7線断面図Sectional view along line 7-7 in FIG. 図2の8方向矢視図8 direction arrow view of FIG. 低荷重モードの作用説明図Action diagram of low load mode 高荷重モードの作用説明図Action diagram of high load mode 第1、第2倒れ防止板の作用説明図Action explanatory view of the first and second fall prevention plates 第1、第2座屈板の座屈時の作用説明図Action explanatory diagram at the time of buckling of the first and second buckling plates 衝突時のバンパービームの伸び変形の作用説明図Action explanatory diagram of bumper beam elongation deformation at the time of collision 第2の実施の形態に係る倒れ防止板の形状を示す図The figure which shows the shape of the fall prevention board which concerns on 2nd Embodiment 第3の実施の形態に係る倒れ防止板の形状を示す図The figure which shows the shape of the fall prevention board which concerns on 3rd Embodiment 第4の実施の形態に係る、前記2に対応する図The figure corresponding to said 2 based on 4th Embodiment 倒れ防止板の作用説明図Action explanatory diagram of the fall prevention plate

符号の説明Explanation of symbols

11 バンパービーム
12 フロントサイドフレーム(車体フレーム)
13 圧壊強度可変装置
24 第1座屈板(座屈板)
25 第2座屈板(座屈板)
39 第1倒れ防止板(倒れ防止板)
39A 第1倒れ防止板(倒れ防止板)
39B 第1倒れ防止板(倒れ防止板)
41 第2倒れ防止板(倒れ防止板)
11 Bumper beam 12 Front side frame (body frame)
13 Crushing strength variable device 24 1st buckling plate (buckling plate)
25 Second buckling plate (buckling plate)
39 First fall prevention plate (fall prevention plate)
39A First fall prevention plate (fall prevention plate)
39B First fall-prevention plate (fall-prevention plate)
41 Second falling prevention plate (falling prevention plate)

Claims (2)

バンパービーム(11)と車体フレーム(12)との間に、車体前後方向の衝突荷重を受けて圧壊する圧壊強度が可変な圧壊強度可変装置(13)を配置した車両の車体強度調整装置において、
前記圧壊強度可変装置(13)は、車体前後方向に入力する荷重により座屈して衝撃を吸収する座屈板(24,25)と、車体前後方向に対して傾斜した方向に入力する荷重による前記座屈板(24,25)の倒れを防止する倒れ防止板(39,39A,39B,41)とを備えたことを特徴とする車両の車体強度調整装置。
In a vehicle body strength adjusting device for a vehicle, in which a crushing strength varying device (13) is provided between the bumper beam (11) and the vehicle body frame (12), and the crushing strength variable device (13) that is crushed by receiving a collision load in the longitudinal direction of the vehicle body is arranged.
The variable crushing strength device (13) includes a buckling plate (24, 25) that buckles by a load input in the vehicle longitudinal direction and absorbs an impact, and the load that is input in a direction inclined with respect to the vehicle longitudinal direction. A vehicle body strength adjusting device for a vehicle, comprising a fall prevention plate (39, 39A, 39B, 41) for preventing the buckling plate (24, 25) from falling.
前記倒れ防止板(39,41)は、車体前後方向に入力する荷重に対する座屈剛性よりも、車体前後方向に対して傾斜した方向に入力する荷重に対する座屈剛性を高く設定したことを特徴とする、請求項1に記載の車両の車体強度調整装置。   The fall prevention plates (39, 41) are characterized in that the buckling rigidity with respect to the load input in the direction inclined with respect to the vehicle longitudinal direction is set higher than the buckling rigidity with respect to the load input in the vehicle longitudinal direction. The vehicle body strength adjusting device for a vehicle according to claim 1.
JP2007025846A 2007-02-05 2007-02-05 Car body strength adjusting device of vehicle Pending JP2008189155A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007025846A JP2008189155A (en) 2007-02-05 2007-02-05 Car body strength adjusting device of vehicle
US12/009,614 US7708323B2 (en) 2007-02-05 2008-01-21 Crushable body strength adjusting device for a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007025846A JP2008189155A (en) 2007-02-05 2007-02-05 Car body strength adjusting device of vehicle

Publications (1)

Publication Number Publication Date
JP2008189155A true JP2008189155A (en) 2008-08-21

Family

ID=39749671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007025846A Pending JP2008189155A (en) 2007-02-05 2007-02-05 Car body strength adjusting device of vehicle

Country Status (1)

Country Link
JP (1) JP2008189155A (en)

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