JPH02138529A - Rotary damper - Google Patents

Rotary damper

Info

Publication number
JPH02138529A
JPH02138529A JP29198688A JP29198688A JPH02138529A JP H02138529 A JPH02138529 A JP H02138529A JP 29198688 A JP29198688 A JP 29198688A JP 29198688 A JP29198688 A JP 29198688A JP H02138529 A JPH02138529 A JP H02138529A
Authority
JP
Japan
Prior art keywords
oil chamber
rotary damper
lower arm
hollow shaft
housing
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
JP29198688A
Other languages
Japanese (ja)
Inventor
Yutaka Sato
豊 佐藤
Yoshinori Takeuchi
義則 竹内
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.)
Showa Corp
Original Assignee
Showa Seisakusho Co Ltd
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 Showa Seisakusho Co Ltd filed Critical Showa Seisakusho Co Ltd
Priority to JP29198688A priority Critical patent/JPH02138529A/en
Priority to US07/438,681 priority patent/US5005859A/en
Publication of JPH02138529A publication Critical patent/JPH02138529A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/13—Independent suspensions with longitudinal arms only
    • B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/132—Torsion spring comprising a longitudinal torsion bar and/or tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/135—Stabiliser bar and/or tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/22—Rotary Damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/442—Rotary actuator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE:To reduce the space for installment of a suspension device used for four-wheeled automobile by unevenly distributing an oil chamber of a rotary damper in the side of the wheel in a non-cylindrical shape or in a sector form. CONSTITUTION:One edge of a torsion bar 40 that is fixed on a car body 1 in the other edge is defined as a free edge, which is pressed and inserted pivotally into a hollow shaft 4, and its point is serrated for connection with a sub arm 17 that is formed on a lower arm 12. The lower arm 12 branches out in the middle into two arms 13, 14, whose points are installed in both of the edges of the hollow shaft 4 in such a way that they can be oscillated. A housing 21 of a rotary damper is formed between the arms 13 and 14, while a sector formed oil chamber 23 is formed in uneven distribution in the direction of the point of the lower arm 12 in the housing 21, the inside of the oil chamber 23 being divided into two oil passages by a movable vane 24 on the periphery of the hollow shaft 4. Large damping force can be obtained in a small oil chamber 23, and the space can be reduced.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は四輪車等で使用するロータリダンパーに関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary damper used in four-wheeled vehicles and the like.

（従来の技術） 従来、四輪自動車等で使用するロータリダンパーとして
は、例えば特開昭５６−２８００８号公報に記載されて
いるように、ケーシング内に円筒形の油室を形成し、こ
の油室内にロータを臨ませて、このロータには油室内周
面に摺接して回転するベーンを形成したものが知られて
いる。(Prior Art) Conventionally, as a rotary damper used in a four-wheeled vehicle, etc., a cylindrical oil chamber is formed in a casing, and the oil chamber is It is known to have a rotor facing into the chamber, and a rotor having vanes that rotate in sliding contact with the inner circumferential surface of the oil chamber.

（発明が解決しようとする課題） ところで、四輪車の懸架装置は、タイヤハウジング内の
限られたスペース内に設けてタイヤ側と車体側相互の緩
衝を行なわなければならないが、上述したロータリダン
パーにあっては油室が円筒形に形成されているので、大
きなスペースを必要とする。(Problem to be Solved by the Invention) By the way, a suspension system for a four-wheeled vehicle must be provided within a limited space within a tire housing to provide mutual buffering between the tire side and the vehicle body side. Since the oil chamber is formed in a cylindrical shape, it requires a large space.

（課題を解決するための手段） 上記問題点を解決すべく本発明は、油室を非円筒形に形
成した。(Means for Solving the Problems) In order to solve the above problems, the present invention forms an oil chamber in a non-cylindrical shape.

（作用） 油室が非円筒形であるために、油室を一方向に偏在させ
ることが可能になって、スペースが小さくなる。(Function) Since the oil chamber is non-cylindrical, it becomes possible to unevenly distribute the oil chamber in one direction, thereby reducing the space.

（実施例） 以下に本発明の実施例を添付図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

第１図は本発明にがかるロータリダンパーを備えた四輪
車の懸架装置の断面図、第２図は同じくその懸架装置の
側断面図である。FIG. 1 is a cross-sectional view of a suspension system for a four-wheeled vehicle equipped with a rotary damper according to the present invention, and FIG. 2 is a side cross-sectional view of the suspension system.

この懸架装置は、車体１に支持ブラケット２゜２をボル
ト３で固定し、この支持ブラケット２゜２にて中空部材
である中空シャフト４の両端部を支持して、車体１に中
空シャフト４を固定している。また、車輪６にはナック
ル７を取付け、このナックル７の上側にはピロボールジ
ヨイント８を介してアッパーアーム９を、下側にはビロ
ーボールジヨイント１１を介して揺動アームであるロア
ーアーム１２の一端部をそれぞれ取付けている。In this suspension system, a support bracket 2゜2 is fixed to the car body 1 with bolts 3, and both ends of a hollow shaft 4, which is a hollow member, are supported by the support bracket 2゜2. Fixed. A knuckle 7 is attached to the wheel 6, and an upper arm 9 is connected to the upper side of the knuckle 7 via a pillow ball joint 8, and a lower arm 12, which is a swing arm, is connected to the lower side of the knuckle 7 via a pillow ball joint 11. One end is attached to each.

このロアーアーム１２は、途中から二股に分岐して二本
のアーム１３．１４を形成し、これらのアーム１３．１
４の先端部は中空シャフト４の両端部にベアリング１５
．１５を介して揺動可能に装着し、このベアリング１５
の外側にはダストケース１６を螺着し、またアーム１３
の先端部には側方にサブアーム１７を形成している。This lower arm 12 is bifurcated from the middle to form two arms 13.14, and these arms 13.1
4 has bearings 15 at both ends of the hollow shaft 4.
．． The bearing 15 is mounted so as to be swingable through the bearing 15
A dust case 16 is screwed onto the outside of the arm 13.
A sub-arm 17 is formed laterally at the tip.

そして、中空シャフト４の外周側とロアーアーム１２の
他端部との間にはロータリダンパー２０を介装している
。このロータリダンパー２０は、ロアーアーム１２のア
ーム１３とアーム１４との間にハウジング２１を中空シ
ャフト４に対して揺動可能に固定して、ハウジング２１
の両側面にはアーム１３．１４との間にＯ−リング２２
を介設し、アーム１３．１４にてハウジング２１の両側
部を閉塞している。つまり、ロアーアーム１２のアーム
１３．１４はロータリダンパー２０のハウジング１８と
共にケーシングを構成している。A rotary damper 20 is interposed between the outer peripheral side of the hollow shaft 4 and the other end of the lower arm 12. This rotary damper 20 has a housing 21 fixed between the arms 13 and 14 of the lower arm 12 so as to be swingable with respect to the hollow shaft 4.
There are O-rings 22 between the arms 13 and 14 on both sides of the
are interposed, and both sides of the housing 21 are closed off by arms 13 and 14. In other words, the arms 13 and 14 of the lower arm 12 constitute a casing together with the housing 18 of the rotary damper 20.

このロータリダンパー２０のハウジング２１内にはロア
ーアーム１２の先端部方向に偏在する断面非円筒形（扇
状）の油室２３を形成し、また中空シャフト４の外周部
には油室２３内を二つの油室に画する可動ベーン２４を
一体的に形成し、この可動ベーン２４には二つの油室を
連通する油路２６．２７を形成して、この油路２６，２
７を開閉するバルブ２８．２９を取付けている。In the housing 21 of the rotary damper 20, an oil chamber 23 having a non-cylindrical (fan-shaped) cross section is formed which is unevenly distributed toward the tip of the lower arm 12, and on the outer periphery of the hollow shaft 4, two oil chambers 23 are formed. A movable vane 24 that defines an oil chamber is integrally formed, and an oil passage 26, 27 that communicates the two oil chambers is formed in this movable vane 24.
Valves 28 and 29 are installed to open and close 7.

また、ハウジング２１内周面には中空シャフト４の外周
面との間をシールする固定ベーンシール３１を取付け、
可動ベーン２４の周囲には油室２３内面との間をシール
する可動ベーンシール３２を取付け、更に油室２３内に
はリバウンドラバー３３を取付けている。更に、ハウジ
ンク２１には温度補償室３５を形成して油室２３内に図
示しない油路を介して連通させ、この温度補償室３５内
にはフリーピストン３６を摺動自在に嵌装している。Furthermore, a fixed vane seal 31 is attached to the inner circumferential surface of the housing 21 to seal between it and the outer circumferential surface of the hollow shaft 4.
A movable vane seal 32 is attached around the movable vane 24 to seal between it and the inner surface of the oil chamber 23, and a rebound rubber 33 is attached inside the oil chamber 23. Furthermore, a temperature compensation chamber 35 is formed in the housing 21 and communicated with the oil chamber 23 via an oil passage (not shown), and a free piston 36 is slidably fitted in the temperature compensation chamber 35. .

更に、車体１にはトーションバー４０の一端部を固定し
て他端部を自由端部４０ａとなし、この１・−ジョンバ
ー４０の自由端部４０ａは中空シャフト４内に回転自在
に挿通し、自由端部４０ａの先端部はロアーアーム１２
に形成したサブアーム１７にセレーション結合している
。Further, one end of the torsion bar 40 is fixed to the vehicle body 1, and the other end is a free end 40a, and the free end 40a of the torsion bar 40 is rotatably inserted into the hollow shaft 4. , the tip of the free end 40a is connected to the lower arm 12.
The sub-arm 17 is connected to the sub-arm 17 by serrations.

以上のように構成した懸架装置の作用について以下に説
明する。The operation of the suspension system configured as above will be explained below.

この懸架装置においては、ロアーアーム１２の端部にト
ーションバー４０を結合して、トーションバー４０にて
車輪６等を懸架している。そして、走行時の路面状態に
応じて車体１に対して車輪６が相対的に上下動すること
によってロアーアーム１２は中空シャフト４を支軸とし
て第２図矢示Ａ、Ｂ方向に揺動し、例えばロアーアーム
１２が第２図の状態で矢示Ａ方向に揺動したとぎには、
中空シャフト４に一体形成した可動ベーン２４がロータ
リダンパー２０の油室２３内を上方向に揺動して、油室
２３内の一方の油室の作動油が油路２６を通じてバルブ
２８を開いて他方の油室に流入して減衰力が発生し、ま
たこの状態からロアーアーム１２が矢示Ｂ方向に揺動し
たときには可動ベーン２４がロータリダンパー２０の油
Ｎ２３内を下方向に揺動して、油室２３内の他方の油室
の作動油が油路２７を通じてバルブ２９を開いて他方の
油室に流入して減衰力が発生する。In this suspension system, a torsion bar 40 is coupled to the end of the lower arm 12, and the wheels 6 and the like are suspended by the torsion bar 40. Then, as the wheels 6 move up and down relative to the vehicle body 1 according to the road surface condition during driving, the lower arm 12 swings in the directions of arrows A and B in FIG. For example, when the lower arm 12 swings in the direction of arrow A in the state shown in FIG.
The movable vane 24 integrally formed on the hollow shaft 4 swings upward in the oil chamber 23 of the rotary damper 20, and the hydraulic oil in one of the oil chambers in the oil chamber 23 passes through the oil passage 26 and opens the valve 28. The oil flows into the other oil chamber and generates a damping force, and when the lower arm 12 swings in the direction of arrow B from this state, the movable vane 24 swings downward in the oil N23 of the rotary damper 20. The hydraulic oil in the other oil chamber in the oil chamber 23 opens the valve 29 through the oil passage 27 and flows into the other oil chamber to generate damping force.

この懸架装置のロータリダンパー２０の油室２３は非円
筒形にして車輪側に偏在させているので、ロアーアーム
１２を枢支している中空シャフト４の外周のスペースを
小さくすることができる。Since the oil chamber 23 of the rotary damper 20 of this suspension system is made into a non-cylindrical shape and is unevenly located on the wheel side, the space around the outer periphery of the hollow shaft 4 that pivotally supports the lower arm 12 can be reduced.

（発明の効果） 以上説明したように本発明によれば、油室を非円筒形に
形成したので、油室を一方向に偏在させることが可能に
なって、スペースが小さくなる。(Effects of the Invention) As described above, according to the present invention, since the oil chamber is formed in a non-cylindrical shape, the oil chamber can be unevenly distributed in one direction, and the space is reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明にかかるロータリダンパーを備えた四輪
車の懸架装置の断面図、第２図は同じくその懸架装置の
側断面図である。 尚、図面中、１は車体、４は中空シャフト、６は車輪、
１２はロアーアーム、１３．１４はアーム、１７はサブ
アーム、２０はロータリダンパー　２１はハウジング、
２３は油室、２４は可動ベーン、４０はトーションバー
である。FIG. 1 is a cross-sectional view of a suspension system for a four-wheel vehicle equipped with a rotary damper according to the present invention, and FIG. 2 is a side cross-sectional view of the suspension system. In addition, in the drawing, 1 is the vehicle body, 4 is a hollow shaft, 6 is a wheel,
12 is a lower arm, 13.14 is an arm, 17 is a sub arm, 20 is a rotary damper, 21 is a housing,
23 is an oil chamber, 24 is a movable vane, and 40 is a torsion bar.

Claims (1)

【特許請求の範囲】[Claims] 油室内をベーンが回動することによって減衰力を発生す
るロータリダンパーにおいて、前記油室は非円筒形に形
成したことを特徴とするロータリダンパー。A rotary damper that generates damping force by rotating a vane within an oil chamber, wherein the oil chamber is formed in a non-cylindrical shape.
JP29198688A 1988-11-18 1988-11-18 Rotary damper Pending JPH02138529A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP29198688A JPH02138529A (en) 1988-11-18 1988-11-18 Rotary damper
US07/438,681 US5005859A (en) 1988-11-18 1989-11-17 Motor vehicle suspension with rotary damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29198688A JPH02138529A (en) 1988-11-18 1988-11-18 Rotary damper

Publications (1)

Publication Number Publication Date
JPH02138529A true JPH02138529A (en) 1990-05-28

Family

ID=17776036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29198688A Pending JPH02138529A (en) 1988-11-18 1988-11-18 Rotary damper

Country Status (1)

Country Link
JP (1) JPH02138529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190093732A1 (en) * 2017-09-25 2019-03-28 Larry Verbowski Device for enabling alterations in the extension of vehicle shocks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190093732A1 (en) * 2017-09-25 2019-03-28 Larry Verbowski Device for enabling alterations in the extension of vehicle shocks
US10823252B2 (en) * 2017-09-25 2020-11-03 Larry Verbowski Device for enabling alterations in the extension of vehicle shocks

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