JPS6250339B2 - - Google Patents
Info
- Publication number
- JPS6250339B2 JPS6250339B2 JP57148058A JP14805882A JPS6250339B2 JP S6250339 B2 JPS6250339 B2 JP S6250339B2 JP 57148058 A JP57148058 A JP 57148058A JP 14805882 A JP14805882 A JP 14805882A JP S6250339 B2 JPS6250339 B2 JP S6250339B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle body
- subframe
- vehicle
- differential
- mount bracket
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
- B62D21/155—Sub-frames or underguards
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Power Transmission Devices (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は自動車の後部構造に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rear structure of an automobile.
（従来の技術）
従来、自動車の衝突時に車体が変形するのを防
止して乗員の保護を図る構造がいくつか提案され
ている。(Prior Art) Several structures have been proposed to protect occupants by preventing the vehicle body from deforming in the event of a collision.
例えば実開昭48−1519号公報に記載のように、
剛性の高いフレームに前方に突出したアームを設
け、それによつて車両後突時に、前記アームをア
クスルシヤフトに衝突させて衝撃力を吸収緩和
し、後部客室の変形を防止するものは知られてい
る。 For example, as described in Utility Model Application Publication No. 48-1519,
It is known that a highly rigid frame is provided with an arm that protrudes forward, so that in the event of a rear collision of the vehicle, the arm collides with the axle shaft to absorb and alleviate the impact force, thereby preventing deformation of the rear passenger compartment. .
（発明が解決しようとする問題点）
ところが、このような構造であると、大きな衝
撃力が加わると、アームがフレーム取付部から折
れ曲がり十分に対応することができないという不
具合がある。(Problems to be Solved by the Invention) However, with such a structure, there is a problem in that when a large impact force is applied, the arm bends from the frame attachment portion and cannot adequately respond.
本発明はかかる点に鑑みてなされたもので、簡
単な構造で、車両後突時に比較的大きな衝撃力が
加わつた場合にも客室後部の変形を防止すること
ができる自動車の後部構造を提供することを目的
とするものである。 The present invention has been made in view of the above, and provides a rear structure for an automobile that has a simple structure and can prevent the rear part of the passenger compartment from being deformed even when a relatively large impact force is applied at the time of a rear collision of the vehicle. The purpose is to
（問題点を解決するための手段）
本発明は、上記目的を達成するために、車体に
取付けられリヤサスペンシヨンアームを支持する
サブフレームが車幅方向に延設され、該サブフレ
ームの左右端部が、車体前後方向に延びる閉断面
形状のサイドシル後端の後方に位置するととも
に、上記サブフレームにはデフ装置の一端側が支
持され、上記サイドシルの内方側には車体前後方
向に延び後端部が車体後部に位置する左右一対の
車体フレームが配設され、該車体フレームに、車
幅方向に延び上記デフ装置の他端側を支持するデ
フマウントブラケツトと、該デフマウントブラケ
ツトの後方位置でかつ該デフマウントブラケツト
と略平行に延びるクロスメンバとが設けられてい
る。(Means for Solving the Problems) In order to achieve the above object, the present invention has a subframe attached to a vehicle body and supporting a rear suspension arm that extends in the vehicle width direction. A side sill is located behind the rear end of a side sill having a closed cross-section shape extending in the longitudinal direction of the vehicle body, one end side of the differential device is supported by the subframe, and a rear end extending in the longitudinal direction of the vehicle body is located on the inner side of the side sill. A pair of left and right vehicle body frames are provided, the portions of which are located at the rear of the vehicle body, and a differential mount bracket that extends in the vehicle width direction and supports the other end of the differential device; A cross member extending substantially parallel to the differential mount bracket is also provided.
（作用）
車両後突時に、例えばリヤバンパーより車体フ
レームに入力された衝撃力は、クロスメンバを前
進させ、該クロスメンバをデフマウントブラケツ
トを介してデフ装置に衝突させる。それによつ
て、衝撃力は、デフ装置を介して、サブフレー
ム、サイドシルと順に伝達され吸収緩和される。(Operation) At the time of a rear collision of a vehicle, an impact force inputted to the body frame from, for example, a rear bumper moves the cross member forward, causing the cross member to collide with the differential device via the differential mount bracket. As a result, the impact force is transmitted to the subframe and the side sills in this order via the differential device, and is absorbed and alleviated.
（実施例）
以下、本発明の実施例を図面に基づいて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
第１図および第２図に示す自動車の後部におい
て、１は車幅方向に延設されたサブフレームで、
取付部１ａ，１ｂにおいて車体に取付固定され、
リヤサスペンシヨンアーム２，３を揺動可能に支
持している。 At the rear of the automobile shown in FIGS. 1 and 2, 1 is a subframe extending in the vehicle width direction;
It is attached and fixed to the vehicle body at the attachment parts 1a and 1b,
The rear suspension arms 2 and 3 are swingably supported.
４，５は左右一対の車体フレームで、車体前後
方向に延び、後端部が車体後部に位置している。
この車体フレーム４，５は、車体前後方向に延び
る閉断面形状のサイドシル６，７の内方側に配設
されている。なお、上記サブフレーム１は、車体
フレーム４，５に取付固定されることなく、それ
らを越えて車幅方向外方に延び、それの左右端部
が、サイドシル６，７の後端後方に位置してい
る。 Reference numerals 4 and 5 denote a pair of left and right vehicle body frames, which extend in the longitudinal direction of the vehicle body, and their rear ends are located at the rear of the vehicle body.
The vehicle body frames 4 and 5 are disposed on the inner side of side sills 6 and 7 each having a closed cross-section and extending in the longitudinal direction of the vehicle body. The sub-frame 1 is not fixed to the vehicle body frames 4 and 5, but extends outward in the vehicle width direction beyond them, and its left and right ends are located behind the rear ends of the side sills 6 and 7. are doing.
８はデフ装置で、プロペラシヤフト９の後端部
に接続され、この接続部分付近において、サブフ
レーム１に支持ブラケツト１９を介して一端側が
支持されている。また、このデフ装置８の他端側
には、上方に突出する突出部８ａが設けられ、該
突出部８ａが、車幅方向に延び両端が車体フレー
ム４，５に取付固定されたデフマウントブラケツ
ト１０にラバー（図示せず）を介して支持されて
いる。 A differential device 8 is connected to the rear end of the propeller shaft 9, and one end is supported by the subframe 1 via a support bracket 19 near this connection portion. Further, the other end of the differential device 8 is provided with a protruding portion 8a that protrudes upward, and the protruding portion 8a extends in the vehicle width direction and has both ends attached to a differential mount bracket that is fixed to the vehicle body frames 4 and 5. 10 via rubber (not shown).
１１はクロスメンバで、デフマウントブラケツ
ト１０の若干後方位置で該デフマウントブラケツ
ト１０と略平行に延び両側端部が車体フレーム
４，５に取付固定されている。このクロスメンバ
１１は係合部１１ａを有し、該係合部１１ａがデ
フマウントブラケツト１０の係止片部１０ａと対
向している。 A cross member 11 extends substantially parallel to the differential mount bracket 10 at a position slightly rearward of the differential mount bracket 10, and its both end portions are attached and fixed to the vehicle body frames 4 and 5. This cross member 11 has an engaging portion 11a, and the engaging portion 11a faces the locking piece portion 10a of the differential mount bracket 10.
なお、１２，１３はそれぞれ左右後輪、１４は
後部座席、１５はスペアタイヤ、１６はリヤサス
ペンシヨン、１７はリヤバンパー、１８はバツク
ドアである。 Note that 12 and 13 are left and right rear wheels, 14 is a rear seat, 15 is a spare tire, 16 is a rear suspension, 17 is a rear bumper, and 18 is a back door.
上記のように構成すれば、サブフレーム１は、
車体フレーム４，５、サイドシル６，７の何れに
も固定されておらず、路面からの振動が車体へ構
造的に伝達されにくく、乗員の乗心地がよいのに
加えて、車両後突時には、例えばリヤバンパー１
７より入力された衝撃力は車体フレーム４，５に
伝達され、該車体フレーム４，５が変形しようと
するが、その変形に伴なつてクロスメンバ１１が
前進してそれの係合部１１ａとデフマウントブラ
ケツト１０の係止片部１０ａとが衝突係合する。 If configured as above, subframe 1 will be
Since it is not fixed to either the vehicle body frames 4, 5 or the side sills 6, 7, vibrations from the road surface are structurally difficult to be transmitted to the vehicle body, providing a comfortable ride for the occupants.In addition, in the event of a rear-end collision, For example, rear bumper 1
The impact force input from 7 is transmitted to the body frames 4 and 5, and the body frames 4 and 5 tend to deform, but as the cross member 11 moves forward and engages its engaging portion 11a. The locking piece 10a of the differential mount bracket 10 collides with the locking piece 10a.
その結果、衝撃力はデフ装置８を介してサブフ
レーム１に伝達され、サブフレーム１が前方位置
へ変位し、それによつてサブフレーム１の左右端
部が剛性の高いサイドシル６，７の後端部に衝突
する。 As a result, the impact force is transmitted to the subframe 1 via the differential device 8, and the subframe 1 is displaced to the forward position, whereby the left and right ends of the subframe 1 are moved to the rear ends of the highly rigid side sills 6 and 7. collide with the department.
それにより、衝撃力が吸収緩和されるとともに
後部客室の変形が阻止され、後席乗員の安全が確
保される。 As a result, impact force is absorbed and alleviated, and deformation of the rear passenger compartment is prevented, ensuring the safety of rear seat passengers.
上記実施例では、車体のクロスメンバ１１をデ
フマウントブラケツト１０に衝突させることによ
り、サブフレーム１とサイドシル６，７との衝突
が生ずるようにしているが、さらに、車体フレー
ム４，５にブラケツトＡを取付固定し（第１図参
照）、それによつて、車両後突時にブラケツトＡ
がサブフレーム１と衝突するようにすることもで
きる。 In the above embodiment, the cross member 11 of the vehicle body collides with the differential mount bracket 10, thereby causing a collision between the subframe 1 and the side sills 6, 7. (see Figure 1), thereby preventing bracket A from colliding with the rear of the vehicle.
may also collide with subframe 1.
（発明の効果）
本発明は上記のように構成したから、乗員の乗
心地に優れるのに加えて、サブフレームを利用し
て車両後突時に生ずる衝撃力をサイドシルに伝達
することができることとなり、簡単な構造でもつ
て、比較的大きな衝撃力が加わつた場合にも客室
後部の変形を防止することができ、後席乗員の安
全を確保することができる。(Effects of the Invention) Since the present invention is configured as described above, in addition to providing excellent ride comfort for the occupants, the impact force generated at the time of a rear collision of the vehicle can be transmitted to the side sill using the subframe. Even with a simple structure, deformation of the rear part of the cabin can be prevented even when a relatively large impact force is applied, and the safety of rear seat passengers can be ensured.
図面は本発明の実施例を示すもので、第１図は
自動車後部の概略側面図、第２図は同概略平面図
である。
１……サブフレーム、２，３……サスペンシヨ
ンアーム、４，５……車体フレーム、６，７……
サイドシル、８……デフ装置、１０……デフマウ
ントブラケツト、１１……クロスメンバ、Ａ……
ブラケツト。
The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view of the rear of an automobile, and FIG. 2 is a schematic plan view thereof. 1... Subframe, 2, 3... Suspension arm, 4, 5... Body frame, 6, 7...
Side sill, 8...Differential device, 10...Differential mount bracket, 11...Cross member, A...
Bracket.
Claims (1)
を支持するサブフレームが車幅方向に延設され、
該サブフレームの左右端部が、車体前後方向に延
びる閉断面形状のサイドシル後端の後方に位置す
るとともに、上記サブフレームにはデフ装置の一
端側が支持され、上記サイドシルの内方側には車
体前後方向に延び後端部が車体後部に位置する左
右一対の車体フレームが配設され、該車体フレー
ムに、車幅方向に延び上記デフ装置の他端側を支
持するデフマウントブラケツトと、該デフマウン
トブラケツトの後方位置でかつ該デフマウントブ
ラケツトと略平行に延びるクロスメンバとが設け
られていることを特徴とする自動車の後部構造。 ２ 車体フレームはブラケツトを備えており、車
両後突時に、該ブラケツトがサブフレームに衝突
し、それによつてサブフレームが衝撃力を受ける
特許請求の範囲第１項記載の自動車の後部構造。[Claims] 1. A subframe attached to the vehicle body and supporting the rear suspension arm extends in the vehicle width direction,
The left and right ends of the subframe are located behind the rear ends of side sills with a closed cross section that extend in the longitudinal direction of the vehicle body, one end side of the differential device is supported by the subframe, and the vehicle body A pair of left and right vehicle body frames that extend in the front-rear direction and whose rear ends are located at the rear of the vehicle body are provided, and the vehicle body frames include a differential mount bracket that extends in the vehicle width direction and supports the other end of the differential device, and a differential mount bracket that extends in the vehicle width direction and supports the other end of the differential device. 1. A rear structure for an automobile, characterized in that a cross member is provided at a rear position of a mount bracket and extends substantially parallel to the differential mount bracket. 2. The rear structure of a motor vehicle according to claim 1, wherein the body frame is provided with a bracket, and the bracket collides with the subframe in the event of a rear collision of the vehicle, whereby the subframe receives an impact force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14805882A JPS5938172A (en) | 1982-08-26 | 1982-08-26 | Rear structure for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14805882A JPS5938172A (en) | 1982-08-26 | 1982-08-26 | Rear structure for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5938172A JPS5938172A (en) | 1984-03-01 |
| JPS6250339B2 true JPS6250339B2 (en) | 1987-10-23 |
Family
ID=15444228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14805882A Granted JPS5938172A (en) | 1982-08-26 | 1982-08-26 | Rear structure for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5938172A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128923A (en) * | 1988-11-09 | 1990-05-17 | Mazda Motor Corp | Power unit supporting structure for vehicle |
| FR2789031B1 (en) * | 1999-02-02 | 2001-04-27 | Peugeot Citroen Automobiles Sa | FRONT SHOCK PROTECTION DEVICE APPLIED TO THE FRONT PART OF A MOTOR VEHICLE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56168478U (en) * | 1980-05-16 | 1981-12-12 |
-
1982
- 1982-08-26 JP JP14805882A patent/JPS5938172A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5938172A (en) | 1984-03-01 |
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