JPH11208231A - Rear suspension of vehicle - Google Patents

Rear suspension of vehicle

Info

Publication number
JPH11208231A
JPH11208231A JP1952898A JP1952898A JPH11208231A JP H11208231 A JPH11208231 A JP H11208231A JP 1952898 A JP1952898 A JP 1952898A JP 1952898 A JP1952898 A JP 1952898A JP H11208231 A JPH11208231 A JP H11208231A
Authority
JP
Japan
Prior art keywords
vehicle body
vehicle
elastic
rear suspension
suspension
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.)
Pending
Application number
JP1952898A
Other languages
Japanese (ja)
Inventor
Kazuo Harada
一夫 原田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP1952898A priority Critical patent/JPH11208231A/en
Publication of JPH11208231A publication Critical patent/JPH11208231A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051—Trailing arm twist beam axles
    • B60G21/052—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1432—Mounting of suspension arms on the vehicle body or chassis by vertical bolts or studs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1434—Mounting of suspension arms on the vehicle body or chassis in twist-beam axles arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B60G2204/4104—Bushings having modified rigidity in particular directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B60G2204/4104—Bushings having modified rigidity in particular directions
    • B60G2204/41042—Bushings having modified rigidity in particular directions by using internal cam surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve riding comfort and driving stability with a torsion beam rear suspension. SOLUTION: This rear suspension extends in the longitudinal directions of a vehicle, and has a wheel supporting portion and a suspension damper supporting portion at the rear end thereof, and a trailing arm 1 freely movable in the vertical directions of the vehicle through an elastic bush 2 at the front end thereof. In this case, the elastic bush 2 is placed so that the central axial line thereof extends in the vertical directions of the vehicle. The rear suspension is further configured with an inner cylinder 7, i.e., a mounting portion to a side of the vehicle body, an outer cylinder 8 coaxially aligned to the inner cylinder 7 and fixed to a side of the trailing arm 1, and an elastic object 9 that is pressed in between the inner and outer cylinders 7 and 8. A thinner portion 10, which is thinner than other portions, is formed at a front side portion of the vehicle for the elastic body 9, thereby a spring constant at a vehicle front, (i.e., the thinner portion 10) for the elastic object 9 is reduced to be less than those at other portions. Therefore, improvement of riding comfort and securing of driving stability are achieved.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本願発明は、トーションビー
ム式の自動車のリヤサスペンションに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torsion beam type automobile rear suspension.

【０００２】[0002]

【従来の技術】車体前後方向に延び、後端側に車輪支持
部およびサスペンションダンパ支持部を有し、前端側が
弾性ブッシュを介して車体に対して上下方向に揺動自在
に支持されたトレーリングアームを備えた自動車のリヤ
サスペンション（即ち、トーションビーム式リヤサスペ
ンション）は従来から良く知られている。2. Description of the Related Art A trailing member which extends in the front-rear direction of a vehicle body, has a wheel support portion and a suspension damper support portion on a rear end side, and is supported on a front end side of the vehicle body via an elastic bush so as to be vertically swingable. BACKGROUND ART A rear suspension of an automobile having an arm (that is, a torsion beam type rear suspension) is well known in the related art.

【０００３】[0003]

【発明が解決しようとする課題】ところが、上記公知例
のリヤサスペンションにおいては、弾性ブッシュにおけ
るバネ定数が大きすぎると、車輪から車体側への振動伝
達が大きくなって乗り心地を悪くするし、バネ定数を小
さくして乗り心地を改善しようとすると、車輪の接地点
が移動し易くなって走行安定性を損なうおそれがある。However, in the rear suspension of the above-mentioned known example, if the spring constant of the elastic bush is too large, the transmission of vibration from the wheels to the vehicle body becomes large, and the riding comfort is deteriorated. If an attempt is made to improve the ride comfort by reducing the constant, the ground contact point of the wheel is likely to move and the running stability may be impaired.

【０００４】本願発明は、上記の点に鑑みてなされたも
ので、乗り心地の改善と走行安定性の向上との両立を図
ることを目的とするものである。[0004] The present invention has been made in view of the above points, and an object of the present invention is to achieve both improvement in ride comfort and improvement in running stability.

【０００５】[0005]

【課題を解決するための手段】本願発明の基本構成（請
求項１の発明）では、上記課題を解決するための手段と
して、車体前後方向に延び、後端側に車輪支持部および
サスペンションダンパ支持部を有し、前端側が弾性ブッ
シュを介して車体に対して上下方向に揺動自在に支持さ
れたトレーリングアームを備えた自動車のリヤサスペン
ションにおいて、前記弾性ブッシュを、その中心軸線が
車体上下方向に延びるように配置し且つ車体側の取付部
となる内筒と、該内筒と同心上にあって前記トレーリン
グアーム側に固着される外筒と、これら内外筒間に圧入
される弾性体とにより構成するとともに、該弾性体にお
ける車体前方側部位に、他の部位より肉厚の薄い薄肉部
を形成している。According to the basic structure of the present invention (the invention of claim 1), as means for solving the above-mentioned problems, as a means for extending in the front-rear direction of the vehicle body and supporting a wheel support portion and a suspension damper support at a rear end side. A rear suspension of a vehicle having a trailing arm whose front end side is vertically swingably supported with respect to the vehicle body via an elastic bush. And an outer cylinder concentric with the inner cylinder and fixed to the trailing arm side, and an elastic body press-fitted between the inner and outer cylinders. And a thin portion having a smaller thickness than other portions is formed at a portion of the elastic body on the front side of the vehicle body.

【０００６】上記のように構成したことにより、弾性ブ
ッシュを構成する弾性体における車体前方側（即ち、薄
肉部）のバネ定数を他の部位より下げることができるこ
ととなり、乗り心地の改善が得られるとともに、トレー
リングアームのチルト剛性をも下げることができるた
め、車輪の乗り上げ時等におけるショックも小さくな
る。しかも、前記弾性体における車体後方側のバネ剛性
を確保することができるため、横力に対するトー剛性を
確保することができ、走行安定性も向上する。[0006] With the above structure, the spring constant of the elastic body constituting the elastic bush on the front side of the vehicle body (that is, the thin portion) can be reduced as compared with other parts, and the riding comfort can be improved. At the same time, the tilt stiffness of the trailing arm can be reduced, so that the shock at the time of riding on a wheel or the like is reduced. Moreover, since the elastic rigidity of the elastic body on the rear side of the vehicle body can be ensured, the toe rigidity against the lateral force can be ensured, and the running stability can be improved.

【０００７】請求項２の発明におけるように、前記薄肉
部を、車体前方側に向かうに従って広がりをもつ扇形と
した場合、バネ定数の小さい部分（即ち、薄肉部）の面
積が車体前方側に向かうに従って大きくなるため、トレ
ーリングアームのチルト剛性の低減が容易となる。[0007] When the thin portion has a fan shape that expands toward the front of the vehicle body, the area of the portion having a small spring constant (ie, the thin portion) is directed toward the front of the vehicle body. Therefore, the tilt rigidity of the trailing arm can be easily reduced.

【０００８】請求項３の発明におけるように、前記弾性
体に、車体前後方向に関して対称であって車体前後方向
に対して斜め方向となる位置に車体上下方向のバネ定数
を低下させる貫通穴を形成した場合、横方向のバネ剛性
を確保しつつ上下方向のバネ剛性を小さくすることがで
き、乗り心地の改善および走行安定性の確保がより確か
となる。According to a third aspect of the present invention, a through hole is formed in the elastic body at a position which is symmetrical with respect to the longitudinal direction of the vehicle body and oblique to the longitudinal direction of the vehicle body to reduce the spring constant in the vertical direction of the vehicle body. In this case, the spring stiffness in the vertical direction can be reduced while securing the spring stiffness in the horizontal direction, so that the improvement of the riding comfort and the assurance of the running stability can be further ensured.

【０００９】[0009]

【発明の実施の形態】以下、添付の図面を参照して、本
願発明の好適な実施の形態について詳述する。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

【００１０】この自動車のリヤサスペンションは、トー
ションビーム式リヤサスペンションであって、図１およ
び図２に示すように、車体前後方向に延び、後端側に車
輪（即ち、後輪３）を支持する車輪支持部１ａおよびサ
スペンションダンパ４を支持するサスペンションダンパ
支持部１ｂを有し、前端側が後述する弾性ブッシュ２を
介して車体Ｂに対して上下方向に揺動自在に支持された
トレーリングアーム１を備えており、左右のトレーリン
グアーム１同士は、車体への連結部位近傍において左右
方向に延びるトーションビーム５によって連結されてい
る。The rear suspension of this automobile is a torsion beam type rear suspension, as shown in FIGS. 1 and 2, which extends in the front-rear direction of the vehicle body and supports wheels (ie, rear wheels 3) at the rear end side. The vehicle has a trailing arm 1 having a support portion 1a and a suspension damper support portion 1b for supporting the suspension damper 4, and a front end side of which is supported to be vertically swingable with respect to the vehicle body B via an elastic bush 2 described later. The left and right trailing arms 1 are connected to each other by a torsion beam 5 extending in the left and right direction in the vicinity of a connection portion to the vehicle body.

【００１１】前記サスペンションダンパ４には、サスペ
ンションスプリング６が組み込まれており、常時伸び方
向に付勢されている。また、このサスペンションダンパ
４は、上方に向かうに従って後方側に向かうように傾斜
されている。A suspension spring 6 is incorporated in the suspension damper 4 and is constantly urged in the extending direction. The suspension damper 4 is inclined such that it goes rearward as it goes upward.

【００１２】前記弾性ブッシュ２は、図２に示すよう
に、その中心軸線Ｏが車体上下方向に延びるように配置
されており、図３ないし図５に示すように、車体Ｂ側の
取付部となる内筒７と、該内筒７と同心上にあって前記
トレーリングアーム１側に固着される外筒８と、これら
内外筒７，８間に圧入される弾性体９とにより構成され
ている。As shown in FIG. 2, the elastic bush 2 is arranged so that its central axis O extends in the vertical direction of the vehicle body. As shown in FIGS. An inner cylinder 7, an outer cylinder 8 concentric with the inner cylinder 7 and fixed to the trailing arm 1 side, and an elastic body 9 press-fitted between the inner and outer cylinders 7, 8. I have.

【００１３】該弾性体９における車体前方側部位には、
上下方向からほぼ均等に肉を抉ることにより他の部位よ
り肉厚の薄い薄肉部１０が形成されている。該薄肉部１
０は、車体前方側に向かうに従って広がりをもつ扇形と
されている。A portion of the elastic body 9 on the front side of the vehicle body includes:
A thin portion 10 having a smaller thickness than other portions is formed by substantially uniformly digging the meat from the vertical direction. The thin part 1
0 has a fan shape that expands toward the front side of the vehicle body.

【００１４】また、前記弾性体９には、車体前後方向に
関して対称であって車体前後方向に対して斜め方向とな
る位置に車体上下方向のバネ定数を低下させる前部貫通
穴１１，１１および後部貫通穴１２，１２が形成されて
いる。前記前部貫通穴１１，１１は、前記薄肉部１０の
左右方向端部に形成されている。The elastic body 9 has front through holes 11, 11 and a rear portion which lower the spring constant in the vehicle vertical direction at positions symmetrical with respect to the vehicle longitudinal direction and oblique to the vehicle longitudinal direction. Through holes 12, 12 are formed. The front through holes 11 are formed at left and right ends of the thin portion 10.

【００１５】上記のように構成された自動車のリヤサス
ペンションにおいては、次のような作用が得られる。The following effects are obtained in the rear suspension of the automobile configured as described above.

【００１６】後輪３に後方向の入力ＹＲが作用すると、
弾性ブッシュ２には、車体後方側への力ＨＦ′が作用す
る。ところが、本実施の形態の場合、弾性ブッシュ２を
構成する弾性体９の車体前方側部位に薄肉部１０が形成
されているため、当該薄肉部１０のバネ定数が他の部位
より小さくなっているため、乗り心地の改善が得られ
る。しかも、トレーリングアーム１のチルト剛性をも下
げることができるため、車輪の乗り上げ時等におけるシ
ョックも小さくなる。When a rearward input YR acts on the rear wheel 3,
A force HF 'acts on the elastic bush 2 toward the rear of the vehicle body. However, in the case of the present embodiment, since the thin portion 10 is formed at the vehicle body front side portion of the elastic body 9 constituting the elastic bush 2, the spring constant of the thin portion 10 is smaller than other portions. Therefore, the ride comfort is improved. In addition, since the tilt rigidity of the trailing arm 1 can be reduced, a shock at the time of riding on a wheel or the like is reduced.

【００１７】一方、後輪３に横方向の入力ＺＲが作用す
ると、弾性ブッシュ２には前方への反力ＨＦ′が作用す
る。ところが、本実施の形態の場合、弾性ブッシュ２を
構成する弾性体９における車体後方側のバネ剛性が高く
なっているため、後輪３の接地点移動が起こらなくな
る。つまり、横力に対するトー剛性を確保することがで
き、走行安定性が向上する。On the other hand, when the lateral input ZR acts on the rear wheel 3, a forward reaction force HF 'acts on the elastic bush 2. However, in the case of the present embodiment, since the spring rigidity of the elastic body 9 constituting the elastic bush 2 on the rear side of the vehicle body is increased, the rear wheel 3 does not move to the ground. That is, the toe rigidity against the lateral force can be secured, and the running stability is improved.

【００１８】また、本実施の形態においては、前記薄肉
部１０を、車体前方側に向かうに従って広がりをもつ扇
形としているので、バネ定数の小さい部分（即ち、薄肉
部１０）の面積が車体前方側に向かうに従って大きくな
り、トレーリングアーム１のチルト剛性の低減が容易と
なる。Further, in the present embodiment, the thin portion 10 is formed into a fan shape which expands toward the front of the vehicle body, so that the area of the portion having a small spring constant (that is, the thin portion 10) is reduced. , The tilt rigidity of the trailing arm 1 can be easily reduced.

【００１９】さらに、本実施の形態においては、前記弾
性体９に、車体前後方向に関して対称であって車体前後
方向に対して斜め方向となる位置に車体上下方向のバネ
定数を低下させる前部貫通穴１１，１１および後部貫通
穴１２，１２を形成しているので、横および後方向のバ
ネ剛性を確保しつつ前方向への変形時に弾性変形させ易
くすることができ、乗り心地の改善および走行安定性の
確保がより確かとなる。Further, in the present embodiment, the elastic body 9 has a front penetration which lowers the spring constant in the vertical direction of the vehicle body at a position symmetrical with respect to the longitudinal direction of the vehicle body and oblique to the longitudinal direction of the vehicle body. Since the holes 11, 11 and the rear through-holes 12, 12 are formed, it is possible to easily elastically deform in the forward direction while securing the lateral and rearward spring stiffness, thereby improving ride comfort and running. Ensuring stability is more certain.

【００２０】[0020]

【発明の効果】本願発明（請求項１の発明）によれば、
車体前後方向に延び、後端側に車輪支持部およびサスペ
ンションダンパ支持部を有し、前端側が弾性ブッシュを
介して車体に対して上下方向に揺動自在に支持されたト
レーリングアームを備えた自動車のリヤサスペンション
において、前記弾性ブッシュを、その中心軸線が車体上
下方向に延びるように配置し且つ車体側の取付部となる
内筒と、該内筒と同心上にあって前記トレーリングアー
ム側に固着される外筒と、これら内外筒間に圧入される
弾性体とにより構成するとともに、該弾性体における車
体前方側部位に、他の部位より肉厚の薄い薄肉部を形成
して、弾性ブッシュを構成する弾性体における車体前方
側（即ち、薄肉部）のバネ定数を他の部位より下げるこ
とができるようにしたので、乗り心地の改善が得られる
とともに、トレーリングアームのチルト剛性をも下げる
ことができるため、車輪の乗り上げ時等におけるショッ
クも小さくなるという優れた効果がある。しかも、前記
弾性体における車体後方側のバネ剛性を確保することが
できるため、横力に対するトー剛性を確保することがで
き、走行安定性も向上するという効果もある。According to the invention of the present application (the invention of claim 1),
An automobile having a trailing arm extending in the vehicle longitudinal direction, having a wheel support portion and a suspension damper support portion on a rear end side, and a front end side supported by an elastic bush so as to be vertically swingable with respect to the vehicle body. In the rear suspension, the elastic bush is disposed so that the center axis thereof extends in the up-down direction of the vehicle body, and an inner cylinder serving as a mounting portion on the vehicle body side; An elastic bush is formed by an outer cylinder to be fixed, and an elastic body press-fitted between the inner and outer cylinders, and a thin portion thinner than other portions is formed at a portion of the elastic body on the front side of the vehicle body. The spring constant on the front side of the vehicle body (that is, the thin portion) of the elastic body that constitutes the tire can be made lower than that of other parts, so that the ride comfort can be improved and the tray can be improved. Since it is also possible to reduce the tilt stiffness of Nguamu, there is excellent effect that the shock is also reduced at the time of such riding of the wheel. In addition, since the spring rigidity of the elastic body on the rear side of the vehicle body can be secured, the toe rigidity against the lateral force can be secured, and there is also an effect that running stability is improved.

【００２１】請求項２の発明におけるように、前記薄肉
部を、車体前方側に向かうに従って広がりをもつ扇形と
した場合、バネ定数の小さい部分（即ち、薄肉部）の面
積が車体前方側に向かうに従って大きくなるため、トレ
ーリングアームのチルト剛性の低減が容易となる。As in the second aspect of the present invention, when the thin portion has a fan shape that expands toward the front of the vehicle body, the area of the portion having a small spring constant (ie, the thin portion) is directed toward the front of the vehicle body. Therefore, the tilt rigidity of the trailing arm can be easily reduced.

【００２２】請求項３の発明におけるように、前記弾性
体に、車体前後方向に関して対称であって車体前後方向
に対して斜め方向となる位置に車体上下方向のバネ定数
を低下させる貫通穴を形成した場合、横方向のバネ剛性
を確保しつつ上下方向のバネ剛性を小さくすることがで
き、乗り心地の改善および走行安定性の確保がより確か
となる。According to a third aspect of the present invention, a through hole is formed in the elastic body at a position which is symmetrical with respect to the longitudinal direction of the vehicle body and oblique to the longitudinal direction of the vehicle body to reduce the spring constant in the vertical direction of the vehicle body. In this case, the spring stiffness in the vertical direction can be reduced while securing the spring stiffness in the horizontal direction, so that the improvement of the riding comfort and the assurance of the running stability can be further ensured.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本願発明の実施の形態にかかる自動車のリヤサ
スペンションを示す平面図である。FIG. 1 is a plan view showing a rear suspension of an automobile according to an embodiment of the present invention.

【図２】本願発明の実施の形態にかかる自動車のリヤサ
スペンションを示す側面図である。FIG. 2 is a side view showing a rear suspension of the automobile according to the embodiment of the present invention.

【図３】本願発明の実施の形態にかかる自動車のリヤサ
スペンションにおける弾性ブッシュの平面図である。FIG. 3 is a plan view of an elastic bush in the rear suspension of the automobile according to the embodiment of the present invention.

【図４】図３のＩＶ−ＩＶ断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

【図５】図３のＶ−Ｖ断面図である。FIG. 5 is a sectional view taken along line VV of FIG. 3;

【符号の説明】[Explanation of symbols]

１はトレーリングアーム、２は弾性ブッシュ、３は後
輪、４はサスペンションダンパ、５はトーションビー
ム、７は内筒、８は外筒、９は弾性体、１０は薄肉部、
１１，１２は貫通穴、Ｂは車体。1 is a trailing arm, 2 is an elastic bush, 3 is a rear wheel, 4 is a suspension damper, 5 is a torsion beam, 7 is an inner cylinder, 8 is an outer cylinder, 9 is an elastic body, 10 is a thin part,
11 and 12 are through holes, and B is a vehicle body.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 車体前後方向に延び、後端側に車輪支持
部およびサスペンションダンパ支持部を有し、前端側が
弾性ブッシュを介して車体に対して上下方向に揺動自在
に支持されたトレーリングアームを備えた自動車のリヤ
サスペンションであって、前記弾性ブッシュは、その中
心軸線が車体上下方向に延びるように配置されていて、
車体側の取付部となる内筒と、該内筒と同心上にあって
前記トレーリングアーム側に固着される外筒と、これら
内外筒間に圧入される弾性体とからなっており、該弾性
体における車体前方側部位には、他の部位より肉厚の薄
い薄肉部が形成されていることを特徴とする自動車のリ
ヤサスペンション。1. A trailing vehicle extending in the front-rear direction of a vehicle body, having a wheel support portion and a suspension damper support portion on a rear end side, and a front end side supported by an elastic bush so as to be swingable in a vertical direction with respect to the vehicle body. A rear suspension of an automobile having an arm, wherein the elastic bush is disposed such that a center axis thereof extends in a vertical direction of the vehicle body,
An inner cylinder serving as a mounting portion on the vehicle body side, an outer cylinder concentric with the inner cylinder and fixed to the trailing arm side, and an elastic body press-fitted between the inner and outer cylinders; A rear suspension for an automobile, wherein a thin portion having a smaller thickness than other portions is formed in a portion of the elastic body on the front side of the vehicle body. 【請求項２】 前記薄肉部は、車体前方側に向かうに従
って広がりをもつ扇形とされていることを特徴とする前
記請求項１記載の自動車のリヤサスペンション。2. The rear suspension according to claim 1, wherein the thin portion has a fan shape that expands toward the front of the vehicle body. 【請求項３】 前記弾性体には、車体前後方向に関して
対称であって車体前後方向に対して斜め方向となる位置
に車体上下方向のバネ定数を低下させる貫通穴が形成さ
れていることを特徴とする前記請求項１および請求項２
のいずれか一項記載の自動車のリヤサスペンション。3. The elastic body has a through hole formed at a position symmetrical with respect to the longitudinal direction of the vehicle body and oblique to the longitudinal direction of the vehicle body to reduce a spring constant in the vertical direction of the vehicle body. Claim 1 and Claim 2
A rear suspension of a vehicle according to any one of the preceding claims.
JP1952898A 1998-01-30 1998-01-30 Rear suspension of vehicle Pending JPH11208231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1952898A JPH11208231A (en) 1998-01-30 1998-01-30 Rear suspension of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1952898A JPH11208231A (en) 1998-01-30 1998-01-30 Rear suspension of vehicle

Publications (1)

Publication Number Publication Date
JPH11208231A true JPH11208231A (en) 1999-08-03

Family

ID=12001848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1952898A Pending JPH11208231A (en) 1998-01-30 1998-01-30 Rear suspension of vehicle

Country Status (1)

Country Link
JP (1) JPH11208231A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003240036A (en) * 2001-12-10 2003-08-27 Tokai Rubber Ind Ltd Vibration control bush
JP2008039134A (en) * 2006-08-09 2008-02-21 Fuji Heavy Ind Ltd Bushing
CN102529635A (en) * 2012-02-15 2012-07-04 江苏九龙汽车制造有限公司 Automobile rear torsion beam
CN108688428A (en) * 2017-04-07 2018-10-23 福特全球技术公司 Torsion-beam rear suspension

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003240036A (en) * 2001-12-10 2003-08-27 Tokai Rubber Ind Ltd Vibration control bush
US7357379B2 (en) 2001-12-10 2008-04-15 Tokai Rubber Industries, Ltd. Vibration isolating bushing
JP2008039134A (en) * 2006-08-09 2008-02-21 Fuji Heavy Ind Ltd Bushing
CN102529635A (en) * 2012-02-15 2012-07-04 江苏九龙汽车制造有限公司 Automobile rear torsion beam
CN108688428A (en) * 2017-04-07 2018-10-23 福特全球技术公司 Torsion-beam rear suspension

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