JPS5857533A - Hydraulic buffer - Google Patents

Hydraulic buffer

Info

Publication number
JPS5857533A
JPS5857533A JP56157285A JP15728581A JPS5857533A JP S5857533 A JPS5857533 A JP S5857533A JP 56157285 A JP56157285 A JP 56157285A JP 15728581 A JP15728581 A JP 15728581A JP S5857533 A JPS5857533 A JP S5857533A
Authority
JP
Japan
Prior art keywords
cylinder
piston rod
pulp
oil
control plate
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
JP56157285A
Other languages
Japanese (ja)
Inventor
Susumu Shinozaki
篠崎 進
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.)
Hitachi Astemo Ltd
Original Assignee
Atsugi Motor Parts 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 Atsugi Motor Parts Co Ltd filed Critical Atsugi Motor Parts Co Ltd
Priority to JP56157285A priority Critical patent/JPS5857533A/en
Publication of JPS5857533A publication Critical patent/JPS5857533A/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
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/466Throttling control, i.e. regulation of flow passage geometry
    • F16F9/467Throttling control, i.e. regulation of flow passage geometry using rotary valves
    • 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
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/50Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • 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
    • F16F2232/00Nature of movement
    • F16F2232/02Rotary

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE:To stabilize turning drive of a vehicle by providing a control plate with an oil hole facing a bottom valve communicating hole and making the opening area of a valve communicating hole variable in linkage with steering, in the hydraulic buffer of the vehicle with a bottom valve. CONSTITUTION:When a cylinder 2 makes a relative rotation with respect to a piston rod 10, the cylinder 2 rotates by accompanying the bottom valve 4. By this operation, the communicating hole 3a of the bottom valve 4 rotates in correspondence to the steering angle to decrease the opening area with respect to the oil groove 22a of the control plate 22. Accordingly, the flow resistance in the communicating hole 8a of a working oil between a reservoir chamber 3 and the interior of the cylinder 2 increases and the damping force is improved. Accordingly, the damping force of the buffer in the outside of the turning radius increases and inclination of the vehicle is suppressed to stabilize the turning drive.

Description

【発明の詳細な説明】 旋回時の車体は旋回の半径方向外儒に向かって遠心力を
受け、遠心力方向に移動しようとする。
DETAILED DESCRIPTION OF THE INVENTION During a turn, the vehicle body receives a centrifugal force in the radial direction of the turn, and tends to move in the direction of the centrifugal force.

一方、車輪と路面との間には遠心力の方向とは反対向き
に摩俸力を生じ、車体が遠心力方向に移動するのを阻止
しようとする。この二〇〇】力は偶力として車体に作用
し、車体を傾けようとする。従つで、内輪側油圧緩衝器
は伸力な、外輪側油圧緩衝器は圧縮力をそれぞれ受ける
こととなり、かくして車体にローリング現象を生じると
いう欠点があった。
On the other hand, a frictional force is generated between the wheels and the road surface in a direction opposite to the direction of the centrifugal force, and attempts to prevent the vehicle body from moving in the direction of the centrifugal force. This 200] force acts on the car body as a couple and tries to tilt the car body. Therefore, the inner wheel hydraulic shock absorber receives an elastic force, and the outer wheel hydraulic shock absorber receives a compressive force, which causes a rolling phenomenon in the vehicle body.

本発明は叙上の欠点に鑑みなされたもので、車両の旋回
時に一時的に減衰力を高め、車両の旋回に伴う車体の傾
斜を有効に防止して安定した走行性#!を得ることがで
きる油圧緩衝器を得ることを目的とする。
The present invention was developed in view of the above-mentioned drawbacks, and it temporarily increases the damping force when the vehicle turns, effectively preventing the vehicle body from tilting as the vehicle turns, thereby achieving stable driving performance. The purpose is to obtain a hydraulic shock absorber that can obtain

以下に、本発明の実施例を図面にもとづいて具体的に説
明する。
Embodiments of the present invention will be specifically described below based on the drawings.

第1図において1は一端封止の外筒、2は前記外筒1内
に在って外筒1内面との関に作動油σ】リザーバ室aを
形成するシリンダ、4はシリンダ2の一端側に設けられ
、前記リザーバ室3とシリンダ2内部2.との関に作動
油の制限的流通を許丁ボトムパルプで、このボトムパル
プ4は、環状突起6醪を有するボトムボディ6と、ボト
ムボディ6の前記突起5a上に載置され中央開口61を
有する環状のパルププレート6と、このパルププレート
6σ〕中央開口6.f覆ってこれを閉塞するチェックボ
ディ7と、前記パルププレート6及びチェックボディ7
を軸方向摺動自在に魚受し、上下の連通孔8.v有する
リテーナ8と、リテーナa内に在って前記チェックボデ
ィ7′Ik:パルププレート6側に小さ℃・ばね力で付
勢するチェックスプリング9とから構成されている。1
0はシリンダ2の図示しない他端部を封止的に貫通して
伸びるピストンロッドで、このピストンロッド10の一
端にはピストンパルプ11に備え、シリンダ2内部2e
Lを二つの油室12 、13に隔成し摺動自在なピスト
ン14が固着されている。ピストンパルプ11は、環状
突起1eia及び上下の連通孔15hを有するピストン
本体16と、ピストン本体18の前記突起15G上に載
置され中央開口16av有するパルププレート16と、
このパルププレート16σ)中央開口166v覆ってこ
れを閉塞するチェックボディ17と、前記パルププレー
ト16及びチェックボディ17を軸方向摺動自在に魚受
し上下の連通孔186を有するリテーナ18と、リテー
ナ18内に在って前記チェックボディ17をパルププレ
ート16側に小さいばね力で付勢するチェックスプリン
グ19とから構成されている。
In FIG. 1, 1 is an outer cylinder with one end sealed, 2 is a cylinder that is inside the outer cylinder 1 and forms a hydraulic oil reservoir chamber a in relation to the inner surface of the outer cylinder 1, and 4 is one end of the cylinder 2. The reservoir chamber 3 and the inside of the cylinder 2 are provided on the side. This bottom pulp 4 has a bottom body 6 having an annular protrusion 6 and a central opening 61 placed on the protrusion 5a of the bottom body 6. An annular pulp plate 6 having a center opening 6. f a check body 7 that covers and closes this, the pulp plate 6 and the check body 7;
is slidable in the axial direction, and the upper and lower communication holes 8. The check spring 9 is comprised of a retainer 8 having a retainer 8 and a check spring 9 that is located inside the retainer a and urges the check body 7'Ik: the pulp plate 6 side with a small spring force. 1
0 is a piston rod that extends sealingly through the other end (not shown) of the cylinder 2, and one end of this piston rod 10 is provided with a piston pulp 11, and a piston pulp 11 is provided inside the cylinder 2.
L is separated into two oil chambers 12 and 13, and a slidable piston 14 is fixed thereto. The piston pulp 11 includes a piston body 16 having an annular protrusion 1eia and upper and lower communication holes 15h, a pulp plate 16 placed on the protrusion 15G of the piston body 18 and having a central opening 16av.
This pulp plate 16σ) includes a check body 17 that covers and closes the central opening 166v, a retainer 18 that receives the pulp plate 16 and the check body 17 so as to be slidable in the axial direction, and has upper and lower communication holes 186; The check spring 19 is located inside the pulp plate 16 and biases the check body 17 toward the pulp plate 16 with a small spring force.

一方、2oは一膚カピストンロッド1oの一熾側から軸
方向に穿設された孔10.内に嵌挿され、他端が前記ボ
トムパルプ4のリテーナ8σ〕中央に設けた凹所8−に
枢着されたコントロールロッドで、このコントロールロ
ッド2oは第2図に示す如く、ピストンロッド10の前
記孔10gV切欠き円状とし、コントロールロッド20
をその孔10aに相似形状とすることで、ピストンロッ
ド1oに対し軸方向摺動自在でかつ回動不能とされてい
る。
On the other hand, a hole 10.2o is formed axially from one side of the piston rod 1o. The control rod 2o is fitted into the retainer 8σ of the bottom pulp 4, and the other end is pivotally connected to the recess 8- provided in the center of the retainer 8σ of the bottom pulp 4. As shown in FIG. The hole has a circular shape with a 10gV cutout, and the control rod 20
By making the shape similar to the hole 10a, the piston rod 1o can freely slide in the axial direction and cannot rotate with respect to the piston rod 1o.

21はコントロールロッド20Q図中下方に付勢する圧
縮げねである。また、コントロールロッド20の他端部
には前記ボトムパルプ4の連通孔8αKffiしてコン
トロール板22が固着または軸方向摺動可能であるが回
動不能に係止されており、このコントロール板22は第
3図に示す如く、必らずしも外周に開放することを要し
ない上下面に通ずる油路22. V有し、ボトムパルプ
4に対するコントロール板22の相対回動により、コン
トロール板22の油路22a以外σ)部分がボトムパル
プ4σ】連通孔8aの一部ヶ覆ってこれの開口面積を可
変ならしめ得ろ如く構成される。なお、23はリテーナ
8とコントロール板22との間に配設されたシール板で
ある。
Reference numeral 21 denotes a compression gene that urges the control rod 20Q downward in the figure. In addition, a control plate 22 is fixed to the other end of the control rod 20 through the communication hole 8αKffi of the bottom pulp 4, or is slidable in the axial direction but is locked in a non-rotatable manner. As shown in FIG. 3, an oil passage 22. By rotating the control plate 22 relative to the bottom pulp 4, the portion of the control plate 22 other than the oil passage 22a covers a part of the communication hole 8a of the bottom pulp 4σ, thereby making its opening area variable. Composed as you like. Note that 23 is a seal plate disposed between the retainer 8 and the control plate 22.

斯かる構成において、ピストンロッド10の図示しない
他端側は車体側忙、外l1ff1は車輪側にそれぞれ増
付けられており、操舵操作に伴って外筒1丁なわちシリ
ンダ2とピストンロッド10とσ)間には相対回動が生
じる。ここに、標準状態においてボトムパルプ4の連通
孔8aとコントロール板22の油路22aとσ)間σ)
相対位置は第3図に示ス如くコントロール板220油路
22gがボトムパルプ4の連通孔8aの略全面積を開口
した状態におかれている。斯かる状態でピストンロッド
1゜がピストン14を伴って上昇すると上部油室12が
高圧となり、油室12内の油はピストンパルプ11の油
路18.を通りパルププレート16の内周部を下方にた
わませて、これに依る減衰力を生じた後これの中央開口
16.及びピストン本体15σ】連通孔156を通り油
室13へ流入する。一方、ピストンロット110の退出
体積の補償のためにリザ−バ室3σフ油ハボトムパルプ
4のパルププレート6及びチェックボディ7をチェック
スプリング9σ)ばね力に抗して押し上げて、連通孔8
a及びコントロール板22の油路226を経てシリンダ
2内の油室13へ流入する。次にピストンロッド10が
ピストン14S′伴って下降すると油室13は高圧とな
り、油室13内の油はピストンパルプ11カバルブプレ
ート16及びチェックボディ17をスプリング19σ】
ばね力に抗して押上げ、連通孔18(l Y経て油室1
2内へ流入する。一方、ピストンロッド10の進入体積
に相当する油は、コントロール板22の油路22.及び
ボトムパルプ4の連通孔8a9経てパルププレート6の
内周部な下方に撓め、これKよる減衰力を生じた後これ
の中央開口6αを経てリザーバ室3内へ流入し、かくし
てピストンロッド1oの作動装置に応じた減衰カケ生じ
るのである。
In such a configuration, the other end (not shown) of the piston rod 10 is attached to the vehicle body side, and the outer l1ff1 is attached to the wheel side, so that one outer cylinder, that is, the cylinder 2, and the piston rod 10 are attached to each other as the steering operation is performed. σ) A relative rotation occurs between the two. Here, in the standard state, the distance σ) between the communication hole 8a of the bottom pulp 4 and the oil passage 22a of the control plate 22 is σ).
The relative position is such that the oil passage 22g of the control plate 220 opens substantially the entire area of the communication hole 8a of the bottom pulp 4, as shown in FIG. When the piston rod 1° rises together with the piston 14 in this state, the upper oil chamber 12 becomes high pressure, and the oil in the oil chamber 12 flows through the oil passage 18 of the piston pulp 11. The inner circumferential portion of the pulp plate 16 is deflected downward through the center opening 16. and piston body 15σ] flows into the oil chamber 13 through the communication hole 156. On the other hand, in order to compensate for the withdrawal volume of the piston rod 110, the pulp plate 6 of the bottom pulp 4 and the check body 7 of the reservoir chamber 3σ are pushed up against the force of the check spring 9σ), and the communication hole 8
a and the oil passage 226 of the control plate 22 to flow into the oil chamber 13 in the cylinder 2. Next, when the piston rod 10 descends with the piston 14S', the oil chamber 13 becomes high pressure, and the oil in the oil chamber 13 moves the piston pulp 11, valve plate 16, and check body 17 to the spring 19σ].
Push up against the spring force and connect the communication hole 18 (l Y to the oil chamber 1
Flows into 2. On the other hand, the oil corresponding to the entering volume of the piston rod 10 is in the oil passage 22 of the control plate 22. Through the communication hole 8a9 of the bottom pulp 4, the inner peripheral part of the pulp plate 6 is bent downward, and after this generates a damping force K, it flows into the reservoir chamber 3 through the central opening 6α, and thus the piston rod 1o Attenuation chips occur depending on the actuating device.

次に、車両に操舵操作が加えられると、シリンダ2はピ
ストンロッド1oに対して相対回動する。
Next, when a steering operation is applied to the vehicle, the cylinder 2 rotates relative to the piston rod 1o.

ここに、車両に進行方向右向きの操舵角が与えられると
、シリンダ2はボトムパルプ4を伴って第4因において
時針方向に回動する。即ち、ボトムパルプ4の連通孔8
aは第41mK二点鎖線で示す位置から時計方向に、操
舵角に応じて角変αだけ回動し実#(破、!’)で示す
位置に至り、コントロール板22σ】油路22(! K
対する開口面積を減する。
Here, when the vehicle is given a steering angle to the right in the direction of travel, the cylinder 2 is rotated in the direction of the hour hand along with the bottom pulp 4 due to the fourth factor. That is, the communication hole 8 of the bottom pulp 4
a rotates clockwise from the position shown by the two-dot chain line in the 41st mK by an angle change α according to the steering angle, and reaches the position shown by the actual # (broken,!'), and the control plate 22σ] oil passage 22 (! K
Reduce the opening area for the

これによってボトムパルプ4の連通孔8αは操舵角度に
応じてその開口面積火変えることとなり、リザーバ室3
内とシリンダ2内との間の作動油の流通抵抗即ち減衰力
を高める。従ってこれを車両の操舵旋回時半径方向外側
(即ち、進行方向左側)K位置して装架すると操舵角に
応じて減衰力を高め、遠心力によって車体がローリング
するのン防止して安定した旋回走行が保障される。
As a result, the opening area of the communication hole 8α of the bottom pulp 4 changes depending on the steering angle, and the reservoir chamber 3
This increases the flow resistance of hydraulic oil between the inside of the cylinder 2 and the inside of the cylinder 2, that is, the damping force. Therefore, if this is installed at a position K on the outside in the radial direction (i.e., on the left side in the direction of travel) when the vehicle is steering and turning, it will increase the damping force according to the steering angle, preventing the vehicle from rolling due to centrifugal force, and ensuring stable turning. Running is guaranteed.

逆に、車両の進行方向左向きの操舵が与えられた場合、
旋回グ〕半径方向内側(即ち、進行方向左側に位置して
装架された油圧緩衝器における連通孔8aと油路22a
との相対位置は、第5(2)に示すごとくボトムパルプ
4の連通孔8aの開口面積は、操舵しない状態と同じK
なり、減衰力が変化しない。
Conversely, if the vehicle is steered to the left in the direction of travel,
Turning gear] The communication hole 8a and the oil passage 22a in the hydraulic shock absorber mounted on the radially inner side (i.e., on the left side in the direction of travel)
As shown in Section 5 (2), the opening area of the communication hole 8a of the bottom pulp 4 is the same as in the non-steering state.
Therefore, the damping force does not change.

従って、車両の右側と左側とkそれぞれ装架される油圧
緩衝器のコントロール板を互いに鏡写対称形状(a対称
形状)としておけば、車両の右または左旋回時に右また
は左側のいずれか一方の緩衝器の連通孔a、のみの開口
面積が減じられ、他方の開口面積は変化せず、操舵旋回
時の牛径方向外方に位置する緩衝器の&減衰力を高める
よ5に作用する。
Therefore, if the control plates of the hydraulic shock absorbers installed on the right and left sides of the vehicle are mirror-symmetrical to each other (a-symmetrical shape), when the vehicle turns right or left, either the right or left side The opening area of only the communication hole a of the shock absorber is reduced, the other opening area remains unchanged, and acts to increase the & damping force of the shock absorber located outward in the cow radial direction during a steering turn.

また、コントロールロッド20fピストンロツド1oに
対し軸方向摺動自在でかっ回動不能とするため、第6図
(a)のように1 ピストンロッド10σ)孔10a 
7p円弧と矩形が連続する孔となし、こσ】孔10aに
相似するコントロールロッド20を挿入したもの、第6
図(6)のよ5に前記孔10aおよびコントロールロッ
ド20を同一形状で相似の多角形としたもの、あるいは
@ 6 因(a) K示すよ5に前記孔10at’円状
とし、コントロールロッド20を切欠き円状とするとと
もに、ピストンロッド1゜Kコントロールロッド20の
回り止メ用ヒン24を挿入したものがそれぞれ選択して
使用できる。
In addition, in order to make the control rod 20f slidable in the axial direction but not rotatable relative to the piston rod 1o, as shown in FIG.
7p A hole in which an arc and a rectangle are continuous, and a control rod 20 similar to the hole 10a is inserted.
As shown in Figure (6), the hole 10a and the control rod 20 have the same shape and are similar polygons, or as shown in Figure (6), the hole 10a and the control rod 20 are circular, and It is possible to select and use a type in which the piston rod has a notched circular shape and a hinge 24 for preventing rotation of the piston rod 1°K control rod 20 is inserted.

さらに、前記リテーナ8に設けられる連通孔8aを第7
図に示すようにそのリテーナ8の反時計回動力向に@を
狭くした形状とすることKより、僅かな操舵角に対して
減衰力を大巾に高めることができる。
Furthermore, the communication hole 8a provided in the retainer 8 is
As shown in the figure, by forming the retainer 8 in a shape in which the @ is narrowed in the direction of the counterclockwise rotational force, the damping force can be greatly increased for a small steering angle.

ナオ、コントロールロッド2oは第8図に示すように、
リテーナ8′及びチェックボディ?’V貫通しそσ)先
m′%:外筒1 o)封止端上に枢着させることも可能
である。斯く構成することkより、チェックボディ7′
ヲピストンバルプ11のチェックボディ17と共用する
ことができるという効果が得られる。
As shown in Fig. 8, the control rod 2o is
Retainer 8' and check body? 'V penetration σ) Tip m'%: Outer cylinder 1 o) It is also possible to pivotally attach it on the sealed end. By constructing in this way, check body 7'
The effect is that it can be used in common with the check body 17 of the piston valve 11.

以上説明したよう#C1本発明によれば油圧緩衝器の構
成な、ボトムパルプにシリンダ内部に向って開口するす
くなくとも一個の連通孔を設け、この連通孔に面して、
上下面に連通する油路を有し、ピストンロッドに対し回
動不能でかつ軸方向摺動1JflK係合されたコント四
−ルロッド端のコントロール板を臨ませ、ボトムパルプ
に対するコントロール板の相対回動くより、ボトムパル
プの連通孔σ)開口m*v可変ならしめるようにしたこ
とにより、これを車体と車軸部とσ)間に介装した場合
に1車両σ1旋回時に遠心力な受けても、車体内口++
 IJソング有効に減衰できる。かくして、乗心地が向
上し安定した旋回走行が約束される。
As explained above, #C1 according to the present invention, in the structure of the hydraulic shock absorber, at least one communicating hole opening toward the inside of the cylinder is provided in the bottom pulp, and facing this communicating hole,
It has an oil passage communicating with the upper and lower surfaces, and faces the control plate at the end of the control rod, which cannot rotate with respect to the piston rod and is slidably engaged in the axial direction, so that the control plate can rotate relative to the bottom pulp. By making the opening m*v of the communication hole σ) of the bottom pulp variable, when it is interposed between the vehicle body, axle, and σ), even if one vehicle receives centrifugal force when turning σ1, Vehicle interior ++
IJ songs can be effectively attenuated. In this way, ride comfort is improved and stable cornering is guaranteed.

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

第1図は本発明の油圧緩衝器の要部ケ示す縦断面図、第
2図は第1図のA−A線断面図、第3図は同じくコント
ロール板とリテーナとの関係を示す説明的断面図、第4
図、II!5図はコントロール板とリテーナとの相対作
動状態を示す説明的断面図、8g6図(a) 、 (6
) 、 (e)はそれぞれピストンロッドとコントロー
ルロッドとの挿入構造を示す、第1図中のA−A線相当
部位で切断した断面図、第7図はコントロール板とリテ
ーナとの他の関係構造火水す説明的断面図、第8図は本
考案の別の実施例を示す要部断面図である。 1・・・外筒、2・・・シリンダ、3・・・リザーバ室
、4゜4I・・・ボトムパルプ、8a・・・連通孔、1
o・・・ピストンロッド、11・・・ピストンパルプ、
12.13・・・液室、20・・・コントロール板ツ)
’、22・・・コントロール板、22a・・・油路。
Fig. 1 is a longitudinal sectional view showing the main parts of the hydraulic shock absorber of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is an explanatory diagram showing the relationship between the control plate and the retainer. Cross section, 4th
Figure, II! Figure 5 is an explanatory sectional view showing the relative operating state of the control plate and the retainer, Figure 8g6 (a), (6
) and (e) are cross-sectional views taken along the line A-A in Figure 1, showing the insertion structure of the piston rod and control rod, respectively, and Figure 7 shows another related structure between the control plate and the retainer. FIG. 8 is a sectional view of a main part showing another embodiment of the present invention. 1...Outer cylinder, 2...Cylinder, 3...Reservoir chamber, 4゜4I...Bottom pulp, 8a...Communication hole, 1
o... Piston rod, 11... Piston pulp,
12.13...liquid chamber, 20...control board)
', 22...Control board, 22a...Oil passage.

Claims (1)

【特許請求の範囲】[Claims] (1)−IIが封止された外筒と、この外筒内に在って
外筒内面との間に作動油σ1リザーバ室夕形成するシリ
ンダと、シリンダの一3111IIに設けられ、前−記
リザーバ室とシリンダ内部との間に作動油の制限的流通
を許すボトムパルプと、シリンダの他層を液密的に貫通
して伸びる抜差可能なピストンロッドと、このピストン
ロッドの一端に固着され、シリンダ内に二つの油室に隔
成するピストンとを有する油圧緩衝器において、前記ボ
トムパルプはシリンダ内部に向って開口するすくなくと
も一個一〇〕連通孔が設けられており、この連通孔σ)
上面に面して、上下面に連通する油路に有し、前記ピス
トンロッドに対して回動不能でかつ軸方向摺動可能に係
合されたコントロールロッドに固着または回動不能に係
止されたコントロール板を臨ませ、ボトムパルプに対す
るコントロール板の相対回動により、前記コントロール
板の油路と協同して、ボトムパルプの前記連通孔f1開
口面積な可変ならしめることを特徴とする油圧緩衝器。
(1) An outer cylinder in which -II is sealed, a cylinder that is located inside this outer cylinder and forms a hydraulic oil σ1 reservoir chamber between the inner surface of the outer cylinder, and a cylinder that is provided in one 3111II of the cylinder A bottom pulp that allows limited flow of hydraulic oil between the reservoir chamber and the inside of the cylinder, a removable piston rod that extends through the other layers of the cylinder in a fluid-tight manner, and a removable piston rod that is fixed to one end of the piston rod. In a hydraulic shock absorber having a piston separated into two oil chambers in a cylinder, the bottom pulp is provided with at least one communication hole opening toward the inside of the cylinder, and the communication hole σ )
The control rod faces the upper surface and has an oil passage communicating with the upper and lower surfaces, and is fixed or unrotatably locked to a control rod that is non-rotatably engaged with the piston rod and slidably in the axial direction. A hydraulic shock absorber, characterized in that a control plate is faced, and the opening area of the communicating hole f1 of the bottom pulp is made variable by rotating the control plate relative to the bottom pulp in cooperation with the oil passage of the control plate. .
JP56157285A 1981-10-02 1981-10-02 Hydraulic buffer Pending JPS5857533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56157285A JPS5857533A (en) 1981-10-02 1981-10-02 Hydraulic buffer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56157285A JPS5857533A (en) 1981-10-02 1981-10-02 Hydraulic buffer

Publications (1)

Publication Number Publication Date
JPS5857533A true JPS5857533A (en) 1983-04-05

Family

ID=15646317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56157285A Pending JPS5857533A (en) 1981-10-02 1981-10-02 Hydraulic buffer

Country Status (1)

Country Link
JP (1) JPS5857533A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252337U (en) * 1985-09-20 1987-04-01
JPS62194923A (en) * 1986-02-19 1987-08-27 Tokico Ltd Suspension device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252337U (en) * 1985-09-20 1987-04-01
JPS62194923A (en) * 1986-02-19 1987-08-27 Tokico Ltd Suspension device

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