JPH10114282A - Impact absorbing vehicle body structure for automobile - Google Patents
Impact absorbing vehicle body structure for automobileInfo
- Publication number
- JPH10114282A JPH10114282A JP26867896A JP26867896A JPH10114282A JP H10114282 A JPH10114282 A JP H10114282A JP 26867896 A JP26867896 A JP 26867896A JP 26867896 A JP26867896 A JP 26867896A JP H10114282 A JPH10114282 A JP H10114282A
- Authority
- JP
- Japan
- Prior art keywords
- space
- impact absorbing
- shock absorbing
- vehicle body
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、衝突時の衝撃を効
果的に吸収することが可能な自動車の衝撃吸収車体構造
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle impact absorbing body structure capable of effectively absorbing a collision impact.
【０００２】[0002]
【従来の技術】一般に、自動車は車体の前後方向中央部
に設けた居住空間の前部及び後部にそれぞれエンジンル
ーム及びトランクルームを備えており、これらエンジン
ルーム及びトランクルームは自動車の衝突時に衝撃を吸
収するための衝撃吸収空間を構成する。居住空間は衝突
時に内部の乗員を保護し得るように変形し難い強固な構
造を持ち、衝撃吸収空間は衝突時に容易に変形して衝突
のエネルギーを吸収するようになっている。2. Description of the Related Art Generally, an automobile has an engine room and a trunk room at a front part and a rear part of a living space provided at a center part in a front-rear direction of a vehicle body, and the engine room and the trunk room absorb an impact at the time of collision of the automobile. A shock absorbing space for The living space has a strong structure that is hardly deformed so as to protect the occupants inside in the event of a collision, and the shock absorbing space is easily deformed in the event of a collision to absorb the energy of the collision.
【０００３】[0003]
【発明が解決しようとする課題】ところで、自動車の居
住性を高めるには居住空間を大きく確保することが必要
であり、また衝撃吸収能力を高めるには衝撃吸収空間を
大きく確保することが必要である。しかしながら、居住
空間及び衝撃吸収空間の両方を大きくすると、必然的に
自動車の全長が増加するため、駐車スペースや取り回し
性能の面で不利になる問題がある。By the way, it is necessary to secure a large living space in order to enhance the livability of a car, and it is necessary to secure a large shock absorbing space in order to increase the shock absorbing capacity. is there. However, if both the living space and the shock absorbing space are enlarged, the overall length of the vehicle is inevitably increased, which is disadvantageous in terms of parking space and handling performance.
【０００４】本発明は前述の事情に鑑みてなされたもの
で、車体の大型化を回避しながら、居住空間の確保及び
衝撃吸収能力の確保を両立させることを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide both a secure living space and a sufficient shock absorbing capacity while avoiding an increase in the size of a vehicle body.
【０００５】[0005]
【課題を解決するための手段】請求項１に記載された発
明では、自動車の高速走行時には居住空間の前部に連な
る衝撃吸収空間が伸長するため、衝撃吸収空間の潰れ代
が大きくなって衝突時の衝撃吸収能力が増加するだけで
なく、空気抵抗の減少のよる燃料消費量の低減や慣性モ
ーメントの増加による安定性の向上が可能となる。衝撃
吸収空間の伸長によって車体の全長が増加しても、高速
走行時であるために駐車スペースや取り回し性能につい
ては問題にならない。また自動車の低速走行時（停止時
を含む）には居住空間の前部に連なる衝撃吸収空間が収
縮するため、車体の全長が減少して駐車スペースや取り
回し性能の面で有利である。低速走行時には必要とされ
る衝撃吸収能力も小さいため、衝撃吸収空間の収縮によ
って衝撃吸収能力が減少しても問題はない。According to the first aspect of the present invention, when the automobile is running at a high speed, the shock absorbing space connected to the front part of the living space is elongated, and the crushing margin of the shock absorbing space is increased to cause a collision. Not only can the shock absorbing capacity at the time increase, but also the fuel consumption can be reduced due to the decrease in air resistance, and the stability can be improved due to the increase in the moment of inertia. Even if the overall length of the vehicle body increases due to the extension of the shock absorbing space, there is no problem in the parking space and maneuvering performance because the vehicle is traveling at high speed. Also, when the vehicle is running at a low speed (including when the vehicle is stopped), the shock absorbing space connected to the front of the living space contracts, so that the overall length of the vehicle body is reduced, which is advantageous in terms of parking space and handling performance. When traveling at low speed, the required shock absorbing capacity is small, so that there is no problem even if the shock absorbing capacity is reduced due to shrinkage of the shock absorbing space.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を、添
付図面に示した本発明の実施例に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.
【０００７】図１〜図３は本発明の第１実施例を示すも
ので、図１は衝撃吸収車体構造を採用した自動車の側面
図、図２は車体伸縮機構の斜視図、図３は図２の３−３
線断面図である。FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a side view of an automobile adopting a shock absorbing body structure, FIG. 2 is a perspective view of a body stretching mechanism, and FIG. 2-3-3
It is a line sectional view.
【０００８】図１に示すように、自動車Ｖは車体の前後
方向中央部に車室を構成する居住空間１を備えており、
居住空間１の前部にエンジンルームを構成する前部衝撃
吸収空間２が設けられるとともに、居住空間１の後部に
トランクルームを構成する後部衝撃吸収空間３が設けら
れる。前部衝撃吸収空間２の前端部を構成するフロント
バンパー４は、前部衝撃吸収空間２の前後方向長さを伸
縮させる伸縮機構によって実線で示す後退位置と鎖線で
示す前進位置との間を前後方向に移動可能である。As shown in FIG. 1, an automobile V is provided with a living space 1 which constitutes a cabin at the center of the vehicle body in the front-rear direction.
A front shock absorbing space 2 forming an engine room is provided at the front of the living space 1, and a rear shock absorbing space 3 forming a trunk room is provided at the rear of the living space 1. The front bumper 4 constituting the front end of the front shock absorbing space 2 is moved in a front-rear direction between a retreat position shown by a solid line and a forward position shown by a chain line by an expansion and contraction mechanism for expanding and contracting the length of the front shock absorption space 2 in the front and rear directions. Can be moved to
【０００９】図２及び図３に示すように、前部衝撃吸収
空間２の内部に配置された車体フレーム５の左右両側部
に、それぞれ前後一対のスライドガイド６，７が設けら
れる。フロントバンパー４は、車体左右方向に延びるバ
ンパービーム８と、バンパービーム８の前面を覆うバン
パーフェース９と、バンパービーム８の左右両端部から
後方に延びる２本のスライドロッド１０，１０とを備え
ており、各スライドロッド１０は前記スラドガイド６，
７に前後摺動自在に支持される。As shown in FIGS. 2 and 3, a pair of front and rear slide guides 6 and 7 are provided on both right and left sides of the body frame 5 disposed inside the front shock absorbing space 2 respectively. The front bumper 4 includes a bumper beam 8 extending in the left-right direction of the vehicle body, a bumper face 9 covering a front surface of the bumper beam 8, and two slide rods 10, 10 extending rearward from left and right ends of the bumper beam 8. , Each slide rod 10 is connected to the slide guide 6,
7 is slidably supported back and forth.
【００１０】前部衝撃吸収空間２の左右後部にはそれぞ
れモータ１１が設けられており、そのモータ１１の出力
軸に設けた雄ねじ１２がスライドロッド１０の後端に設
けた雌ねじ１３に螺合する。モータ１１を駆動して雄ね
じ１２を回転させると、雄ねじ１２に螺合する雌ねじ１
３と共にガイドロッド１０が押し引きされ、フロントバ
ンパー４がスライドガイド６，７に案内されて前後に摺
動する。前記モータ１１、雄ねじ１２及び雌ねじ１３は
伸縮機構１４を構成する。A motor 11 is provided at each of the left and right rear portions of the front shock absorbing space 2. A male screw 12 provided on an output shaft of the motor 11 is screwed into a female screw 13 provided at a rear end of the slide rod 10. . When the motor 11 is driven to rotate the male screw 12, the female screw 1 screwed into the male screw 12
The guide rod 10 is pushed and pulled together with 3, and the front bumper 4 is guided by the slide guides 6 and 7, and slides back and forth. The motor 11, the male screw 12 and the female screw 13 constitute a telescopic mechanism 14.
【００１１】前後のスライドガイド６，７間に設けた筒
状のダストシール１５によってスライドロッド１０の中
間部外周が覆われるとともに、後側のスライドガイド７
及びモータ１１間に設けた筒状のダストシール１６によ
ってスライドロッド１０の後部外周と雄ねじ１２の外周
とが覆われる。また前側のスライドガイド６及びバンパ
ービーム８間に設けた伸縮自在なブーツ１７によってス
ライドロッド１０の前部外周が覆われる。A cylindrical dust seal 15 provided between the front and rear slide guides 6 and 7 covers an outer periphery of an intermediate portion of the slide rod 10 and a rear slide guide 7.
The outer periphery of the rear part of the slide rod 10 and the outer periphery of the male screw 12 are covered with a cylindrical dust seal 16 provided between the motors 11. The outer periphery of the front portion of the slide rod 10 is covered by an elastic boot 17 provided between the front slide guide 6 and the bumper beam 8.
【００１２】電子制御ユニット１８は、車速を検出する
車速センサ１９からの信号に基づいて前記モータ１１の
駆動を制御する。自動車Ｖの停止時にフロントバンパー
４は最も後退した図１の実線位置にあり、車速の増加に
応じて伸縮機構１４が作動して図１の鎖線位置に向けて
移動する。その結果、前部衝撃吸収空間２の長さは車速
の増加に伴って大きくなる。高速走行する自動車Ｖは大
きな運動エネルギーを持つため、衝突時に必要とされる
衝撃吸収能力も大きくなるが、本発明によれば高速走行
時に前部衝撃吸収空間２が伸長して衝撃吸収能力が増加
し、充分な衝撃吸収効果を得ることができる。An electronic control unit 18 controls the driving of the motor 11 based on a signal from a vehicle speed sensor 19 for detecting a vehicle speed. When the vehicle V is stopped, the front bumper 4 is at the most retreated position shown by the solid line in FIG. 1, and the telescopic mechanism 14 operates according to the increase of the vehicle speed to move toward the chain line position in FIG. As a result, the length of the front shock absorbing space 2 increases as the vehicle speed increases. Since the vehicle V running at high speed has a large kinetic energy, the shock absorbing capacity required at the time of a collision also becomes large. Thus, a sufficient shock absorbing effect can be obtained.
【００１３】前部衝撃吸収空間２が伸長すると、車体の
全長が増加して駐車に必要なスペースが増加し、小回り
が利かなくなって取り回し性能も低下するが、停車時や
低速走行時にはフロントバンパー４が後退して車体の全
長が減少するため、駐車スペースや取り回し性能の問題
も解消する。また停車時や低速走行時には必要とされる
衝撃吸収能力も小さいため、前部衝撃吸収空間２が収縮
しても支障はない。When the front shock absorbing space 2 is extended, the overall length of the vehicle body is increased and the space required for parking is increased, and it is difficult to make a small turn and the handling performance is reduced. As the vehicle retreats and the overall length of the vehicle decreases, problems with parking space and maneuverability are also eliminated. Also, since the required shock absorbing capacity is small when the vehicle is stopped or running at low speed, there is no problem even if the front shock absorbing space 2 contracts.
【００１４】このように前部衝撃吸収空間２を車速に応
じて伸縮させることにより、車体の大型化を回避しなが
ら居住性及び衝撃吸収能力を両立させることができる。By expanding and contracting the front shock absorbing space 2 in accordance with the vehicle speed in this way, it is possible to achieve both comfort and shock absorbing ability while avoiding an increase in the size of the vehicle body.
【００１５】図４は本発明の第２実施例を示すものであ
る。第２実施例の自動車Ｖは貨物車両であって、居住空
間１の前後にエンジンルームよりなる前部衝撃吸収空間
２と、荷台よりなる後部衝撃吸収空間３とを備える。前
部衝撃吸収空間２は内部に収納した伸縮機構により前後
方向に伸縮可能である。前部衝撃吸収空間２の外郭を構
成するボディは蛇腹構造を持ち、隙間を発生させること
なく前部衝撃吸収空間２を伸縮させることができる。FIG. 4 shows a second embodiment of the present invention. The vehicle V according to the second embodiment is a freight vehicle, and includes a front shock absorbing space 2 formed of an engine room and a rear shock absorbing space 3 formed of a cargo bed before and after a living space 1. The front shock absorbing space 2 can be expanded and contracted in the front-rear direction by an expansion and contraction mechanism housed therein. The body constituting the outer shell of the front shock absorbing space 2 has a bellows structure, and can expand and contract the front shock absorbing space 2 without generating a gap.
【００１６】前部衝撃吸収空間２の長さは３段階に変化
し、車速が３０ｋｍ／ｈ以下（停止時を含む）の領域で
前部衝撃吸収空間２は最も短く、車速が４５ｋｍ／ｈ以
上の領域で前部衝撃吸収空間２は最も長く、車速が３０
〜４５ｋｍ／ｈの領域ではその中間になる。The length of the front shock absorbing space 2 changes in three stages, and the front shock absorbing space 2 is the shortest in a region where the vehicle speed is 30 km / h or less (including when stopped), and the vehicle speed is 45 km / h or more. The front shock absorbing space 2 is the longest in the region of
In the region of ~ 45 km / h, it is in the middle.
【００１７】このように、高速走行時に車体の全長を増
加させることにより空気抵抗が減少し、しかも慣性モー
メントの増加により高速安定性が向上する。As described above, the air resistance is reduced by increasing the overall length of the vehicle body during high-speed running, and the high-speed stability is improved by increasing the moment of inertia.
【００１８】以上、本発明の実施例を詳述したが、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。Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof.
【００１９】例えば、前部衝撃吸収空間２を伸縮させる
伸縮機構１４は、油圧或いは空気圧を用いたものであっ
ても良い。For example, the expansion and contraction mechanism 14 for expanding and contracting the front shock absorbing space 2 may be of a type using hydraulic pressure or pneumatic pressure.
【００２０】[0020]
【発明の効果】以上のように請求項１に記載された発明
によれば、自動車の居住空間の前部に連なる衝撃吸収空
間の長さを可変とし、車速の増加に応じて前記衝撃吸収
空間の長さを増加させる伸縮機構を設けたので、大きな
衝撃吸収能力が必要な高速走行時には衝撃吸収空間を伸
長させて衝撃吸収能力を高めることができる。また車体
の全長が増加するために空気抵抗が減少するだけでな
く、慣性モーメントの増加により安定性が向上する。ま
た駐車スペースや取り回し性能が問題となる低速走行時
や停止時には、衝撃吸収空間を収縮させて車体の全長を
減少させることができる。これにより、車体の大型化を
回避しながら居住空間の確保及び衝撃吸収能力の確保を
両立させることが可能となる。As described above, according to the first aspect of the present invention, the length of the shock absorbing space connected to the front part of the living space of the vehicle is made variable, and the length of the shock absorbing space is increased in accordance with an increase in vehicle speed. Since the expansion and contraction mechanism for increasing the length of the shock absorber is provided, the shock absorbing space can be extended and the shock absorbing ability can be increased during high-speed running that requires a large shock absorbing capacity. In addition, not only the air resistance is reduced due to the increase in the overall length of the vehicle body, but also the stability is improved due to the increase in the moment of inertia. Also, at the time of low-speed running or stopping where parking space and maneuvering performance are a problem, the shock absorbing space can be contracted to reduce the overall length of the vehicle body. As a result, it is possible to achieve both the securing of the living space and the securing of the shock absorbing capacity while avoiding an increase in the size of the vehicle body.
【図１】衝撃吸収車体構造を採用した自動車の側面図FIG. 1 is a side view of an automobile employing a shock absorbing body structure.
【図２】車体伸縮機構の斜視図FIG. 2 is a perspective view of a vehicle body extension mechanism.
【図３】図２の３−３線断面図FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;
【図４】第２実施例に係る衝撃吸収車体構造を採用した
自動車の側面図FIG. 4 is a side view of an automobile employing a shock absorbing vehicle body structure according to a second embodiment.
Ｖ 自動車 １ 居住空間 ２ 前部衝撃吸収空間（衝撃吸収空間） １４ 伸縮機構 V car 1 Living space 2 Front shock absorbing space (shock absorbing space) 14 Telescopic mechanism
Claims (1)
連なる衝撃吸収空間（２）の長さを可変とし、車速の増
加に応じて前記衝撃吸収空間（２）の長さを増加させる
伸縮機構（１４）を設けたことを特徴とする自動車の衝
撃吸収車体構造。1. The length of a shock absorbing space (2) connected to the front of a living space (1) of an automobile (V) is variable, and the length of the shock absorbing space (2) is increased in accordance with an increase in vehicle speed. A shock absorbing body structure for an automobile, comprising a telescopic mechanism (14) for increasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26867896A JP3701752B2 (en) | 1996-10-09 | 1996-10-09 | Shock absorption body structure of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26867896A JP3701752B2 (en) | 1996-10-09 | 1996-10-09 | Shock absorption body structure of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10114282A true JPH10114282A (en) | 1998-05-06 |
| JP3701752B2 JP3701752B2 (en) | 2005-10-05 |
Family
ID=17461880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26867896A Expired - Fee Related JP3701752B2 (en) | 1996-10-09 | 1996-10-09 | Shock absorption body structure of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3701752B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004071850A1 (en) * | 2003-01-23 | 2004-08-26 | Toshihiro Fukumoto | Free-shaped floor surface vehicle |
| JP2008213817A (en) * | 2007-02-05 | 2008-09-18 | Honda Motor Co Ltd | Vehicle body strength adjusting device for vehicle |
-
1996
- 1996-10-09 JP JP26867896A patent/JP3701752B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004071850A1 (en) * | 2003-01-23 | 2004-08-26 | Toshihiro Fukumoto | Free-shaped floor surface vehicle |
| JP2008213817A (en) * | 2007-02-05 | 2008-09-18 | Honda Motor Co Ltd | Vehicle body strength adjusting device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3701752B2 (en) | 2005-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
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