JPS63111333A - Fluid-sealed bush - Google Patents

Fluid-sealed bush

Info

Publication number
JPS63111333A
JPS63111333A JP25505986A JP25505986A JPS63111333A JP S63111333 A JPS63111333 A JP S63111333A JP 25505986 A JP25505986 A JP 25505986A JP 25505986 A JP25505986 A JP 25505986A JP S63111333 A JPS63111333 A JP S63111333A
Authority
JP
Japan
Prior art keywords
partition wall
fluid
inner cylinder
cylinder
bush
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
JP25505986A
Other languages
Japanese (ja)
Inventor
Hiromi Inagaki
裕巳 稲垣
Kazuo Matsuura
松浦 一夫
Tetsuya Koike
哲也 小池
Toshihiko Suenaga
寿彦 末永
Masaru Yorita
頼田 勝
Masaki Izawa
伊沢 正樹
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP25505986A priority Critical patent/JPS63111333A/en
Priority to US07/112,303 priority patent/US4811933A/en
Publication of JPS63111333A publication Critical patent/JPS63111333A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/26Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
    • F16F13/28Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions specially adapted for units of the bushing type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/16Units of the bushing type, i.e. loaded predominantly radially specially adapted for receiving axial loads

Abstract

PURPOSE:To widen the range where the variation property of a compliance steer can be adjusted, by fixing a partition wall, which divides a fluid chamber into two parts, to an outer cylinder, and providing a slide bearing in the space between the same and an inner cylinder, so as to ensure the relative axial- displacement between the partition wall and the inner cylinder. CONSTITUTION:In the space between a main pipe 14 comprising an inner cylinder 17 and a main tube 26 comprising an outer cylinder 19, there are formed fluid chambers 29L, 29R, where fluid is sealed by elastic members 20L, 20R and a partition wall 21 provided on the main tube 26. In addition, on the outer periphery portion of the main pipe 14, a bearing metal made bush 18 is axially slidably inserted, and then, in the space between the same and the partition wall 21, a supporting elastic body 22 is provided, while on the partition wall 21, a communicating passage 31, respectively. Therefore, the sliding resistance becomes low when the inner and outer cylinders 17, 19 relatively displace, so that it is possible to widen the adjustable range of the spring constant, thereby ensuring the compliance steer can be adjusted.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は流体封入ブツシュ、特に自動車のラジアスロッ
ドと車体との結合部等に介装される流体封入ブツシュに
関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a fluid-filled bushing, and particularly to a fluid-filled bushing that is installed in a joint between a radius rod and a vehicle body of an automobile.

(従来の技術) 自動車においては、フレームと車軸とをゴムブツシュを
介しラジアスロッドで結合し、これら両者の関係位置の
確保等を行う、このような自動車では、ラジアスロッド
とフレームとの間のゴムブツシュのばね定数(剛性)が
サスペンションのコンプライアンスステアに大きく影響
し、ゴムブツシュのばね定数の調節によってコンプライ
アンスステアも変化する。そこで1本出願人は、特願昭
Go−5411187号明細書(昭和80年4月12日
提出)において、自動車のコンプライアンスステアを積
極的に調整できる流体封入ブツシュを提案し、自動車の
操縦安定性の改善を図っている。
(Prior Art) In an automobile, a frame and an axle are connected by a radius rod through a rubber bushing, and the relative position of the two is ensured. (rigidity) greatly affects the compliance steer of the suspension, and adjusting the spring constant of the rubber bushings also changes the compliance steer. Therefore, in Japanese Patent Application No. Sho Go-5411187 (filed on April 12, 1980), the present applicant proposed a fluid-filled bushing that can actively adjust the compliance steering of an automobile, thereby improving the steering stability of the automobile. We are working to improve this.

この先願にかかる流体封入ブツシュは、内筒と外筒とを
凹部が形成されたゴム筒にて結合するとともに、このゴ
ム筒の凹部内に仕切壁によって2つの流体室を画成し、
仕切壁に2つの流体室を連通ずる連通路を形成するとと
もに連通路の流路面積を変更可能なバルブを設けたもの
である。この流体封入ブツシュは、内筒をラジアスロッ
ドに外筒をフレームに取り付け、バルブをステッピング
モータ等により駆動してサスペンションのコンプライア
ンスステアの変化特性を制御する。
The fluid-filled bushing according to this prior application connects an inner cylinder and an outer cylinder with a rubber cylinder in which a recess is formed, and defines two fluid chambers within the recess of the rubber cylinder by a partition wall.
A communication passage that communicates the two fluid chambers is formed in the partition wall, and a valve that can change the flow area of the communication passage is provided. This fluid-filled bushing has an inner cylinder attached to a radius rod and an outer cylinder attached to a frame, and the valve is driven by a stepping motor or the like to control the changing characteristics of the compliance steer of the suspension.

(この発明が解決しようとする問題点)しかしながら、
この先願にかかる流体封入ブツシュにあっては、仕切壁
がゴム筒と摺接して仕切壁とゴム筒との間の摺動抵抗が
大きいため、コンプライアンスステアの調節可能域が狭
く、また、全体としてのばね定数もその摺動抵抗を考慮
しなければ決定できず設計が煩わしいものになるという
問題点があった。
(Problem to be solved by this invention) However,
In the fluid-filled bushing according to this prior application, the partition wall slides against the rubber cylinder, and the sliding resistance between the partition wall and the rubber cylinder is large, so the adjustable range of the compliance steer is narrow, and the overall The spring constant cannot be determined without taking into consideration the sliding resistance, making the design complicated.

この発明は、上述した問題点に鑑みてなされたもので、
内筒と外筒との相対変位時の抵抗を減少させた流体封入
ブツシュを提供し、コンプライアンスステアの調節可能
域の拡大とともに設計の容易化を図ることを目的として
いる。
This invention was made in view of the above-mentioned problems.
The object of the present invention is to provide a fluid-filled bushing that reduces resistance during relative displacement between an inner cylinder and an outer cylinder, and to expand the adjustable range of the compliance steer and facilitate design.

(問題点を解決するための手段) この発明は、内筒と外筒との間に弾性部材を介設して液
体が充満された液室を画成するとともに、該液室を2つ
に隔別する仕切壁を外筒に設け、該仕切壁により隔成さ
れた2つの液室を連通ずる連通路を形成した流体封入ブ
ツシュにおいて、前記仕切壁と前記内筒との間にすべり
軸受を設け、前記仕切壁と前記内筒とを軸方向相対変位
可能に係合させたことを要旨とする。
(Means for Solving the Problems) The present invention includes interposing an elastic member between an inner cylinder and an outer cylinder to define a liquid chamber filled with liquid, and dividing the liquid chamber into two. In a fluid-filled bushing in which an outer cylinder is provided with a separating partition wall and a communication path is formed to communicate two liquid chambers separated by the partition wall, a sliding bearing is provided between the partition wall and the inner cylinder. The gist is that the partition wall and the inner cylinder are engaged with each other so as to be relatively displaceable in the axial direction.

(作用) この発明にかかる流体封入ブツシュによれば、内筒と仕
切壁との間にすべり軸受が介設されているため、内筒と
仕切壁との間の軸方向の摺動抵抗すなわち内筒と外筒と
の軸方向相対変位時の抵抗が小さい、したがって、その
ばね定数の調節可能域を広くとることができ、また、設
計に際してもその抵抗かばね定数に与える影響を無視す
ることができて設計が容易になる。
(Function) According to the fluid-filled bushing according to the present invention, since the sliding bearing is interposed between the inner cylinder and the partition wall, the sliding resistance in the axial direction between the inner cylinder and the partition wall, that is, the internal The resistance during relative displacement in the axial direction between the cylinder and the outer cylinder is small, so the spring constant can be adjusted over a wide range, and the effect on the resistance or spring constant can be ignored during design. design becomes easier.

(実施例) 以下、この発明の実施例を図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.

第1図および第2図はこの発明にかかる流体封入ブツシ
ュを自動車におけるラジアスロッドの車体フレームへの
取付に適用した一実施例を表し。
FIGS. 1 and 2 show an embodiment in which a fluid-filled bushing according to the present invention is applied to attaching a radius rod to a vehicle body frame of an automobile.

第1図が全体の縦断面図、第2図が要部拡大断面図であ
る。
FIG. 1 is an overall vertical sectional view, and FIG. 2 is an enlarged sectional view of the main parts.

同図において、 (11)はラジアスロッドであり、ラ
ジアスロッド(11)は1図中右方に位置決め用のカラ
ー(12)が嵌合し、また、図中左端にナツト(13)
が螺合するねじ部(lla)を形成されている。
In the figure, (11) is a radius rod, and the radius rod (11) has a positioning collar (12) fitted on the right side in the figure, and a nut (13) on the left end in the figure.
A threaded portion (lla) is formed to be screwed together.

このラジアスロッド(11)には、ねじ部(lla)と
カラー(12)との間にメインパイプ(10が外挿され
A main pipe (10) is fitted onto the radius rod (11) between the threaded portion (lla) and the collar (12).

また、メインパイプ(14)の左右の両端にそれぞれホ
ルダパイプ(15t )、 (15* )およびリング
プレー)  (18L )、 (113m )が外挿さ
れている。これらメインパイプ(14)、ホルダパイプ
(15L )。
Furthermore, holder pipes (15t), (15*) and ring plays (18L), (113m) are extrapolated to the left and right ends of the main pipe (14), respectively. These are the main pipe (14) and the holder pipe (15L).

(15R)およびリングプレート (18t )、 (
18R)は、ナツト(13)によりカラー(12)との
間でラジアスロッド(11)に締結され、全体として内
筒(17)を構成している。上記メインパイプ(14)
は、その両端部がそれぞれホルダパイプ(1st、 )
、 (15R)内に嵌入し、外周部に軸受台金から成る
ブツシュ(すべり軸受) (18)が軸方向摺動自在に
外挿されている。ホルダパイプ(15t )、 (15
R)にはそれぞれ後述する外筒(!8)との間に弾性部
材(20t、)。
(15R) and ring plate (18t), (
18R) is fastened to the radius rod (11) with the collar (12) by a nut (13), and constitutes an inner cylinder (17) as a whole. Main pipe (14) above
, both ends are holder pipes (1st, )
, (15R), and a bush (sliding bearing) (18) consisting of a bearing base metal is fitted onto the outer periphery so as to be slidable in the axial direction. Holder pipe (15t), (15
R) has an elastic member (20t,) between each outer cylinder (!8), which will be described later.

(20* )が介設され、また、ブツシュ(1B)には
後述する仕切壁(21)との間に支持弾性体(22)が
介設され、さらに、リングプレー)  (let )、
 (1f3++ )にはそれぞれ離反する側の面にスト
ッパラバー(23t、 )、 (23N )が固着され
ている。ブツシュ(18)はその両端がそれぞれリップ
シール(24t)。
(20*) is interposed, and a supporting elastic body (22) is interposed between the bushing (1B) and a partition wall (21), which will be described later, and furthermore, a ring play) (let),
(1f3++) has stopper rubbers (23t, ) and (23N) fixed to the surfaces on the side away from each other. The bush (18) has lip seals (24t) on both ends.

(24* )によってメインパイプ(14)との摺動部
の液密性を保持され、また、ストッパラバー(23L 
)、 (23R)は後述するサイドチューブ(25t 
)、 (25m )と当接して内筒(17)と外筒(1
3)との軸方向最大変位を規制する。
(24*) maintains the liquid tightness of the sliding part with the main pipe (14), and the stop rubber (23L)
), (23R) is the side tube (25t
), (25m) and the inner cylinder (17) and outer cylinder (1
3) to regulate the maximum axial displacement.

外筒(19)は1図示しない車体フレームに固定された
メインチューブ(2B)、このメインチューブ(28)
内に嵌入された一対のホルダチューブ(27t、 )、
 (27R)とサイドチューブ(25t、 )。
The outer cylinder (19) consists of a main tube (2B) fixed to the vehicle body frame (not shown), and this main tube (28).
a pair of holder tubes (27t, ) fitted inside;
(27R) and side tube (25t, ).

(25R)とを備えている。メインチューブ(26)に
は図中中央上部に開口(26a)が形成され、この開口
(28a)を中心として各ホルダチューブ(27t、 
)。
(25R). The main tube (26) has an opening (26a) formed at the upper center in the figure, and each holder tube (27t,
).

(27R)およびサイドチューブ(25L )、 (2
5+1 )がそれぞれ対称的に配置されている。ホルダ
チューブ(27t、 )、 (27R)はそれぞれが、
開口(2111a)側に仕切壁(21)が嵌合する縮径
部(28L )。
(27R) and side tube (25L), (2
5+1) are arranged symmetrically. The holder tubes (27t, ) and (27R) are each
A reduced diameter portion (28L) into which the partition wall (21) fits on the opening (2111a) side.

(28窮)を有し、軸方向の両端でメインチューブ(2
B)に嵌着したサイドチューブ(25L )、 (25
1)によって挟持されている。これらホルダチューブ(
2?L )、 (2711)と前述の内筒(17)のホ
ルダパイプ(15L )、 (1511)との間には、
それぞれホルダチューブ (27t )、 (27* 
)とホルダノくイブ(15L )、 (1511)とに
液密的に接着されf−弾性部材(20L )、 (2G
+1 )が介設されている。これら弾性部材(20t、
 )、 (2f)+ )は、仕切壁(21)および支持
弾性体(22)との間にそれぞれ非圧縮性流体である油
が充満された液室(29t )、 (29m )を画成
している。なお、この弾性部材(20t )t (20
* )はリンクプレー)  (18L )、 (113
1)によって軸方向への膨出変形が規制される。
(28 tubes), and the main tube (28 tubes) at both axial ends.
B) Side tube (25L) fitted to (25L)
1). These holder tubes (
2? Between L), (2711) and the holder pipe (15L), (1511) of the inner cylinder (17),
Holder tube (27t), (27*
) and the holder tube (15L), (1511) are liquid-tightly bonded to the f-elastic member (20L), (2G
+1) is provided. These elastic members (20t,
), (2f)+) define liquid chambers (29t) and (29m) filled with oil, which is an incompressible fluid, between the partition wall (21) and the supporting elastic body (22), respectively. ing. Note that this elastic member (20t)t (20
*) is link play) (18L), (113
1) restricts bulging deformation in the axial direction.

仕切壁(21)は、ホルダチューブ(27t )。The partition wall (21) is a holder tube (27t).

(27m )の各縮径部(28L )、 (28R)に
嵌合した基部(21a)と、ホルダチューブ(27t、
 )、 (27++ )の縮径部(28L )、 (2
81)間を軸中心に向かい延出して液室(29t )、
 (29* )間を隔別する突条部(21b)と、を有
している。この仕切壁(21)は、突条部(21b)の
内周部にカラー(30)が嵌着され、前述したブツシュ
(18)との間にカラー(30)およびブツシュ(18
)に接着した支持弾性体(22)が介設されている。こ
の仕切壁(21)は、支持弾性体(22)およびブツシ
ュ(18)によって内筒(17)と軸方向相対変位可能
に係合している。この仕切壁(21)には、軸方向に貫
通して液室(29t、 )、 (29R)間を連通ずる
連通路(31)が突状部(21b)に形成され、また、
連通路(31)に開口する凹部(32)が基部(21a
)の外周面から形成されている。この四部(32)には
、連通路(31)に開口可能な弁孔(33a)を形成さ
れた回転弁体(33)が回動自在に嵌入されている。
The base (21a) fitted into each reduced diameter part (28L) and (28R) of (27m), and the holder tube (27t,
), (27++ ) reduced diameter part (28L ), (2
81) A liquid chamber (29t) extending toward the axis center between
(29*) It has a protrusion part (21b) which separates the space. This partition wall (21) has a collar (30) fitted to the inner circumference of the protrusion (21b), and a collar (30) and a bush (18) between the collar (30) and the bush (18).
) is interposed with a support elastic body (22) bonded to the support elastic body (22). This partition wall (21) is engaged with the inner cylinder (17) through a support elastic body (22) and a bush (18) so as to be able to be relatively displaced in the axial direction. In this partition wall (21), a communication passage (31) is formed in the protrusion (21b) to penetrate in the axial direction and communicate between the liquid chambers (29t, ), (29R), and
The recess (32) that opens into the communication path (31) is located at the base (21a).
) is formed from the outer peripheral surface of the A rotary valve body (33) having a valve hole (33a) that can be opened into the communication path (31) is rotatably fitted into the fourth part (32).

この回転弁体(33)は、仕切壁(21)の基部(21
a)にボルト(34a) 、 (3ab)により固定さ
れたステッピングモータ等のアクチュエータ(35)の
出力軸(35a)と連結され、このアクチュエータ(3
5)により駆動されて連通路(31)の流路面積すなわ
ち開度を調整する。このアクチュエータ(35)は、図
外の制御装置に接続され、車速等に応じ制御される。こ
れらアクチュエータ(35)および回転弁体(33)が
バルブ(3B)を構成する。なお、(37)は油の充填
時のエア抜きを行うドレンコック、また、(38) 、
 (39) 。
This rotary valve body (33) is located at the base (21) of the partition wall (21).
a) is connected to the output shaft (35a) of an actuator (35) such as a stepping motor fixed by bolts (34a) and (3ab).
5) to adjust the flow area, that is, the degree of opening of the communication passage (31). This actuator (35) is connected to a control device (not shown) and is controlled according to vehicle speed and the like. These actuator (35) and rotary valve body (33) constitute a valve (3B). In addition, (37) is a drain cock that bleeds air when filling oil, and (38)
(39).

(40) 、(41) 、(42) 、(43)はオイ
ルシールである。
(40), (41), (42), and (43) are oil seals.

次に、この実施例の作用を説明する。Next, the operation of this embodiment will be explained.

この流体封入ブツシュは、ラジアスロッド(11)が車
体フレームに対して軸方向変位する時すなわち内筒(1
7)と外筒(19)とが軸方向相対変位を生じる時、仕
切壁(21)はブツシュ(18)を介しメインノぐイブ
(14)と摺動して液室(29t )、 (29m )
間に容積変化を生じさせ、油が連通路(31)を経て液
室(29L )、 (2911)間を駆動し、バルブ(
36)による連通路(31)の開度に応じた抵抗力を発
生する。このため、全体としてのばね定数すなわちラジ
アスロッド(11)の取付剛性も連通路(31)の開度
に応じ変化し、コンプライアンスステアの変化特性が連
通路(31)の開度に応じ制御される。この時、仕切壁
(21)はブツシュ(18)がメインノぐイブ(14)
を摺動することで内筒(17)に対し軸方向に変位する
。このため、その摺動抵抗が小さく、コンプライアンス
ステアの変化特性の調節可能域を広くとれ、また、設計
が容易である。そして、ブツシュ(18)とメインパイ
プ(10との間はりツブシール(24L)。
This fluid-filled bushing is used when the radius rod (11) is axially displaced with respect to the vehicle body frame, that is, when the inner cylinder (11)
7) and the outer cylinder (19) cause a relative displacement in the axial direction, the partition wall (21) slides on the main nozzle (14) via the bush (18), and the liquid chambers (29t) and (29m)
A change in volume is caused between the valves (29L) and (2911), and the oil is driven between the liquid chambers (29L) and (2911) through the communication path (31).
36) generates a resistance force according to the degree of opening of the communication path (31). Therefore, the overall spring constant, that is, the mounting rigidity of the radius rod (11) also changes according to the opening degree of the communication passage (31), and the change characteristics of the compliance steer are controlled according to the opening degree of the communication passage (31). At this time, the partition wall (21) is the main noguib (14), but the bush (18)
By sliding, it is displaced in the axial direction with respect to the inner cylinder (17). Therefore, the sliding resistance is small, the change characteristics of the compliance steer can be adjusted over a wide range, and the design is easy. And a knob seal (24L) between the bush (18) and the main pipe (10).

(24m )により液密性が保持され、また、弾性部材
(20t )、 (20m )の膨出変形がリングプレ
ート(18t )、 (18m )により阻止されるた
め、液室(29t )、(29m )はラジアスロッド
(11)の偏位に対し比例的に容積変化を生じ、コンプ
ライアンスステアの変化特性をより仕切壁(21)の変
位すなわち内筒(17)と外筒(18)との相対変位に
より依存さ   −せることができる。
(24m) maintains liquid tightness, and the ring plates (18t), (18m) prevent the expansion deformation of the elastic members (20t), (20m), so the liquid chambers (29t), (29m) ) causes a volume change in proportion to the deviation of the radius rod (11), and the change characteristics of the compliance steer are further influenced by the displacement of the partition wall (21), that is, the relative displacement between the inner cylinder (17) and the outer cylinder (18). -can be made to depend on.

また、ラジアスロッド(11)が揺動した場合にあって
も、仕切壁(21)とブツシュ(18)との間の支持弾
性体(22)が自動調芯的な機能を発揮するため、ブツ
シュ(18)は円滑に摺動することができる。
Furthermore, even if the radius rod (11) swings, the support elastic body (22) between the partition wall (21) and the bush (18) exhibits a self-aligning function, so the bush (18) 18) can slide smoothly.

第3図と第4図には、それぞれこの発明の他の実施例を
表す、なお、以下、前述した実施例と同一の部分には同
一の番号を付し、その説明を省略する。
3 and 4 respectively show other embodiments of the present invention. Hereinafter, the same parts as in the above-mentioned embodiment will be denoted by the same numbers, and the explanation thereof will be omitted.

第3図に表す実施例は、ブツシュ(18)に径方向外方
へ突出する突条(18a)を形成し、この突条(18a
)の内周部にメインパイプ(14)と摺接するオイルシ
ール(0−R4ng)(44)を配置したものである。
In the embodiment shown in FIG.
) is provided with an oil seal (0-R4ng) (44) that makes sliding contact with the main pipe (14).

この実施例は、支持弾性体(22)の剛性が大きくなる
ため、仕切壁(21)の変位に対する液室(29t )
、 (29m )の容積変化が大きくなり、また、オイ
ルシール(40により液室(29t )。
In this embodiment, the rigidity of the supporting elastic body (22) is increased, so that the liquid chamber (29t) is not affected by the displacement of the partition wall (21).
, (29m2) becomes large, and the oil seal (40) increases the liquid chamber (29t2).

(29m )間の液密性が保持されてリップシール(2
4t )、 (24+ )が不用となる。
(29m) and maintains liquid tightness between lip seals (29m).
4t) and (24+) are no longer needed.

第4図に表す実施例は、仕切壁(21)の内周部に嵌着
したカラー(30)に、径方向内方へ突出する突条(3
0a)を形成したものである。
The embodiment shown in FIG.
0a).

この実施例にあっても、支持弾性体(22)の剛性が突
条(30a)により大きくなるため、液室(29L)、
 (29* )の容積変化を大きくすることができる。
Even in this embodiment, since the rigidity of the support elastic body (22) is increased by the protrusion (30a), the liquid chamber (29L),
(29*) volume change can be increased.

(発明の効果) 以上説明してきたように、この発明によれば、内筒と外
筒との相対変位にともなう摺動抵抗が小さくなるため、
そのばね定数(特に減衰係数)の7Af!11可能域を
大きくできる。したがって、自動車のラジアスロッドの
車体フレームへの取付部等に用いると、コンプライアン
スステアの変化特性の調節可能域を大きくできる。
(Effects of the Invention) As explained above, according to the present invention, since the sliding resistance due to relative displacement between the inner cylinder and the outer cylinder is reduced,
Its spring constant (especially damping coefficient) is 7Af! 11 The possible range can be increased. Therefore, when used in the attachment part of a radius rod of an automobile to a vehicle body frame, etc., it is possible to widen the adjustable range of the change characteristics of the compliance steer.

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

第1図および第2図はこの発明の一実施例にかかる流体
封入ブツシュを示し、第1図は全体断面図、第2図が要
部拡大断面図である。第3図はこの発明の他の実施例に
かかる流体封入ブツシュの要部拡大断面図、第4図はこ
の発明のまた他の実施例にかかる流体封入ブツシュの要
部拡大断面図である。 (11)・・・ラジアスロッド     (17)・・
・内筒(1B)・・・ブツシュ(すべり軸受)  (1
9)・・・外筒(20t )、 (20m )・・・弾
性部材   (21)・・・仕切壁(22)・・・支持
弾性体 (24L )、 (241)・・・リップシール(29
t )、 (29++ )・・・液室     (31
)・・・連通路(3B)・・・バルブ
1 and 2 show a fluid-filled bushing according to an embodiment of the present invention, with FIG. 1 being an overall sectional view and FIG. 2 being an enlarged sectional view of a main part. FIG. 3 is an enlarged sectional view of a main part of a fluid-filled bushing according to another embodiment of the present invention, and FIG. 4 is an enlarged sectional view of a main part of a fluid-filled bushing according to another embodiment of the invention. (11)...Radius rod (17)...
・Inner cylinder (1B)...button (sliding bearing) (1
9)...Outer cylinder (20t), (20m)...Elastic member (21)...Partition wall (22)...Support elastic body (24L), (241)...Lip seal (29)...
t), (29++)...liquid chamber (31
)...Communication path (3B)...Valve

Claims (1)

【特許請求の範囲】 内筒と外筒との間に弾性部材を介設して液体が充満され
た液室を画成するとともに、該液室を2つに隔別する仕
切壁を外筒に設け、前記仕切壁により隔成された2つの
液室を連通する連通路を形成した流体封入ブッシュにお
いて、 前記仕切壁と前記内筒との間にすべり軸受を設け、前記
仕切壁と前記内筒とを軸方向相対変位可能にしたことを
特徴とする流体封入ブッシュ。
[Claims] An elastic member is interposed between the inner cylinder and the outer cylinder to define a liquid chamber filled with liquid, and a partition wall that separates the liquid chamber into two is formed in the outer cylinder. In the fluid-filled bush, which is provided in the bush and has a communication path that communicates two liquid chambers separated by the partition wall, a sliding bearing is provided between the partition wall and the inner cylinder, and a sliding bearing is provided between the partition wall and the inner cylinder. A fluid-filled bush characterized by being capable of relative displacement in the axial direction between the bush and the cylinder.
JP25505986A 1986-10-27 1986-10-27 Fluid-sealed bush Pending JPS63111333A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP25505986A JPS63111333A (en) 1986-10-27 1986-10-27 Fluid-sealed bush
US07/112,303 US4811933A (en) 1986-10-27 1987-10-26 Fluid-filled bushing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25505986A JPS63111333A (en) 1986-10-27 1986-10-27 Fluid-sealed bush

Publications (1)

Publication Number Publication Date
JPS63111333A true JPS63111333A (en) 1988-05-16

Family

ID=17273573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25505986A Pending JPS63111333A (en) 1986-10-27 1986-10-27 Fluid-sealed bush

Country Status (1)

Country Link
JP (1) JPS63111333A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435140A (en) * 1987-11-18 1989-02-06 Toyota Motor Corp Vibration preventive device
DE102018122483A1 (en) * 2018-09-14 2020-03-19 Vorwerk Autotec Gmbh & Co. Kg Hydraulically damping bearing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144444A (en) * 1984-12-19 1986-07-02 Tokai Rubber Ind Ltd Bush containing fluid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144444A (en) * 1984-12-19 1986-07-02 Tokai Rubber Ind Ltd Bush containing fluid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435140A (en) * 1987-11-18 1989-02-06 Toyota Motor Corp Vibration preventive device
DE102018122483A1 (en) * 2018-09-14 2020-03-19 Vorwerk Autotec Gmbh & Co. Kg Hydraulically damping bearing

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