JPS63312533A - Hydraulic buffer - Google Patents

Hydraulic buffer

Info

Publication number
JPS63312533A
JPS63312533A JP14988987A JP14988987A JPS63312533A JP S63312533 A JPS63312533 A JP S63312533A JP 14988987 A JP14988987 A JP 14988987A JP 14988987 A JP14988987 A JP 14988987A JP S63312533 A JPS63312533 A JP S63312533A
Authority
JP
Japan
Prior art keywords
spring
oil chamber
damping force
oil
shock absorber
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.)
Granted
Application number
JP14988987A
Other languages
Japanese (ja)
Other versions
JP2685183B2 (en
Inventor
Mitsuhiro Kashima
加島 光博
Tetsuaki Naito
内藤 哲昭
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.)
KYB Corp
Original Assignee
Kayaba Industry 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP62149889A priority Critical patent/JP2685183B2/en
Publication of JPS63312533A publication Critical patent/JPS63312533A/en
Application granted granted Critical
Publication of JP2685183B2 publication Critical patent/JP2685183B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16F9/48Arrangements for providing different damping effects at different parts of the stroke

Landscapes

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

Abstract

PURPOSE:To obtain a positional depending type damping force characteristic easily, by setting a slide member held between a suspended spring and a stroke position detecting spring, on the buffer main body side, and transmitting the axial displacement of the slide member to a variable orifice of an oil route. CONSTITUTION:When a suspended spring 16 is compressed by a striking motion of a piston rod 2 into a damper cylinder 1, and a stroke position detecting spring 17 is also compressed, a slider 19 is moved upward to move a rack 24 rightward through a wire 26, an adjust plate 28 is turned by a pinion 23 through an adjust rod 22, and plural ports 5 are closed in order. In this way, resistance in an oil route from an oil chamber B to an oil chamber A through valves 8, 13 and a port 12, is increased, and a big compressing side damping force is generated. On the other hand, when the operation is turned to the stretching side, as an adjuster sleeve 29 is also turned to close a port 6 at the latter half of the compressing stroke, the direct flow from the oil chamber A to the oil chamber B is prevented, a big stretching side damping force is generated from the beginning, the slider 19 is moved downward according to the stretch, and the port 6 is opened via a wire 25.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、二輪車のりアクッシ謄ンユニットなどに用い
る油圧緩衝器の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a hydraulic shock absorber used in a two-wheeled vehicle's steering suspension unit and the like.

(従来の技術) 二輪車用の油圧緩衝器は良好な釆り心地を確保しつつ底
づき防止を図る必要があり、この点でストローク位置と
ともに減衰力を増加させるいわゆる位置依存型の減衰力
特性を備えることが望ましい、このよ)な緩衝器として
本出願人も例えば実公昭62−3557号等においてイ
ンナチェープの内側に配設し、た懸架スプリングのばね
荷重に対応して内部の油通路に介装したりIノー7弁の
リリーフ圧が高まるようにした70ント7オークを提案
しでいる。
(Prior art) Hydraulic shock absorbers for motorcycles need to prevent bottoming out while ensuring good gripping comfort, and in this respect, it is necessary to develop a so-called position-dependent damping force characteristic in which the damping force increases with the stroke position. As such a shock absorber, which is desirable to be provided, the present applicant also proposed a shock absorber, for example, in Japanese Utility Model Publication No. 62-3557, etc., which was arranged inside the inner chain and interposed in the internal oil passage in response to the spring load of the suspension spring. We have proposed a 70-ton 7 oak that increases the relief pressure of the I-no 7 valve.

(発明が解決しようとする問題点) しかし、この場合には懸架スプリングのばね荷重の一部
を91ノー7弁のリリーフスプリングに作用させるため
、懸架スプリングをインナチェープの内側に配設するこ
とが不可欠であり、リアクッションユニットなどに良(
見られるように懸架スプリングを緩衝器本体の外側に配
設した緩衝器には適用出来ないという問題があった。ま
た、後輪を支持するスイングアームと車体との間に磁気
スケーiしなどによるストローク位置検出センサを介装
し、検出したストロ−゛りに応じて制御回路が緩衝器内
部のソレノイドバルブを制御することにより位置依存型
の減衰力特性を得るようにしたリアクッションユニット
もあるが、構成が複雑なためにコストが高く、またセン
サや制御回路などの機器の配置に場所を取るという難点
があった。
(Problem to be solved by the invention) However, in this case, in order to have a part of the spring load of the suspension spring act on the relief spring of the 91 No. 7 valve, it is essential to arrange the suspension spring inside the inner chain. Therefore, it is good for rear cushion units etc.
As can be seen, there was a problem in that it could not be applied to a shock absorber in which the suspension spring was disposed outside the shock absorber body. In addition, a stroke position detection sensor using a magnetic scale is interposed between the swing arm that supports the rear wheel and the vehicle body, and a control circuit controls the solenoid valve inside the shock absorber according to the detected stroke. There is also a rear cushion unit that obtains position-dependent damping force characteristics by doing so, but this has the disadvantage that it is expensive due to its complicated configuration, and that it takes up a lot of space for devices such as sensors and control circuits. Ta.

本発明は、以上の問題点に鑑みて、緩衝器本体の外側に
懸架スプリングを配設した油圧緩衝器において、位置依
存型の減衰力特性を簡単な構成で得ることを目的とする
SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to obtain position-dependent damping force characteristics with a simple configuration in a hydraulic shock absorber in which a suspension spring is disposed outside the shock absorber body.

(問題点を解決するための手段) 本発明は、作動油を充填したダンパシリンダとこれに摺
動自由に挿入したピストンロッドからなる緩衝器本体の
外側に懸架スプリングを配設し、ピストンロッドの摺動
に対して作動油を所定の抵抗のもとに流通させる油通路
をダンパシリンダに形成した油圧緩衝器において、懸架
スプリングと直列にストローク位置検出用のスプリング
を配設し、これらの間に挾持されて軸方向に変位自由な
スライド部材を緩衝器本体の外側に配置し、このスライ
ド部材の軸方向変位を前記油通路の断面積を変化させる
可変オリフィスに伝達する機構を備えでいる。
(Means for Solving the Problems) The present invention provides a suspension spring on the outside of a shock absorber body consisting of a damper cylinder filled with hydraulic oil and a piston rod slidably inserted into the damper cylinder. In a hydraulic shock absorber in which an oil passage is formed in a damper cylinder to allow hydraulic oil to flow under a predetermined resistance against sliding, a spring for stroke position detection is arranged in series with the suspension spring, and a spring for detecting the stroke position is arranged in series with the suspension spring. A slide member that is held between the slide members and can be freely displaced in the axial direction is disposed outside the shock absorber main body, and a mechanism is provided for transmitting the axial displacement of the slide member to a variable orifice that changes the cross-sectional area of the oil passage.

(作用) ピストンロッドとダンパシリンダとの摺動により懸架ス
プリングが収縮すると、ばね荷重の増加によりストロー
ク位置検出用スプリングも変形し、これらの間のスライ
ド部材が軸方向に変位する。
(Function) When the suspension spring contracts due to sliding between the piston rod and the damper cylinder, the stroke position detection spring also deforms due to the increase in spring load, and the sliding member between them is displaced in the axial direction.

この変位がダンパシリンダ内部に伝達され、可変オリフ
ィスを駆動して通油断面積を変化させることでストロー
ク位置に対応した抽選抵抗が得られる。
This displacement is transmitted to the inside of the damper cylinder, and by driving the variable orifice and changing the oil passage cross-sectional area, a drawing resistance corresponding to the stroke position can be obtained.

(実施例) 第1図〜第12図に本発明の実施例を示す。(Example) Embodiments of the present invention are shown in FIGS. 1 to 12.

第1図において、1はダンパシリンダ、2はダンパシリ
ンダ1に摺動自由に挿入された中空のピストンロッド、
3は作動油の一時的貯留のために外部に設けたりザーパ
タンクである。ダンパシリンダ1の内側には内筒IAが
立設され、ピストンロッド2の先端に形成したピストン
4がその内側に摺接して内IIAの内部を油室AとBに
画成する。ピストン4には第2図に示すように圧側作動
時に下方の油室Bから上方の油室Aへ作動油を流入させ
るチェック弁を備えたボート5が形成され、ピストンロ
ット4の先端部近くにピストンロッド4の内側を通って
逆方向の抽選を行うボート6が形成される。内筒IAの
底部には下方に形成された通路7に油室Bの作動油を流
出させるパルプ8と9、及び逆方向への抽選を行うパル
プ10が形成される。なお、パルプ9はパルプ8より高
圧で開くす1ノー7弁として設定される。なお、通路7
はリザーバタンク3に連通する。内筒IAの外側には通
路11が形成され、内@IAの上部に形成したボート1
2を介して油室Aに連通ずる。また、通路7と11との
間に通路7から通路11へ作動油を流出させるパルプ1
3と逆方向の抽選を行うパルプ14とが介装される。
In FIG. 1, 1 is a damper cylinder, 2 is a hollow piston rod that is slidably inserted into the damper cylinder 1,
3 is a zarpa tank provided externally for temporary storage of hydraulic oil. An inner cylinder IA is erected inside the damper cylinder 1, and a piston 4 formed at the tip of a piston rod 2 slides on the inside of the inner cylinder IA to define oil chambers A and B inside the inner cylinder IIA. As shown in FIG. 2, the piston 4 is formed with a boat 5 equipped with a check valve that allows hydraulic oil to flow from the lower oil chamber B to the upper oil chamber A during pressure side operation, and is located near the tip of the piston rod 4. A boat 6 is formed that passes through the inside of the piston rod 4 and performs the lottery in the opposite direction. At the bottom of the inner cylinder IA are formed pulps 8 and 9 for causing the hydraulic oil in the oil chamber B to flow out into a passage 7 formed below, and a pulp 10 for drawing in the opposite direction. Note that the pulp 9 is set as a 1/7 valve that opens at a higher pressure than the pulp 8. In addition, aisle 7
communicates with the reservoir tank 3. A passage 11 is formed on the outside of the inner cylinder IA, and a boat 1 formed on the upper part of the inner cylinder IA
2 to the oil chamber A. Also, between the passages 7 and 11, there is a pulp 1 that causes hydraulic oil to flow from the passage 7 to the passage 11.
3 and a pulp 14 for performing lottery in the opposite direction are interposed.

ダンパシリンダ1とピストンロフト2を保持するブラケ
ット15との間には懸架スプリング16とストローク位
置検出スプリング17とが直列に介装される。懸架スプ
リング16はダンパシリンダ1に支持されたばね受18
と、これに相対してブラケット15の周囲に軸方向に変
位自由に過去したばね受20とに挾持され、ばね受20
の裏側にはブラケット15の外周に摺接したスライド部
材としてのスライダー19が当接する。そして、ストa
−り位置検出スプリング17がこのスライダー19とブ
ラケット15の上部に螺合するばね受21との闇に保持
される。
A suspension spring 16 and a stroke position detection spring 17 are interposed in series between the damper cylinder 1 and a bracket 15 that holds the piston loft 2. The suspension spring 16 is a spring receiver 18 supported by the damper cylinder 1.
and a spring receiver 20 which is freely displaceable in the axial direction around the bracket 15 in opposition thereto, and the spring receiver 20
A slider 19 as a sliding member that slides on the outer periphery of the bracket 15 is in contact with the back side of the bracket 15 . And store a
- The position detection spring 17 is held between the slider 19 and a spring receiver 21 screwed into the upper part of the bracket 15.

このスライダー19の軸方向変位をダンパシリンダ1内
に伝達する機構としてワイヤー25と26、ラック24
とピニオン23、及びアジャスタロッド22が用いられ
る。アジャスタロッド22はピストンロッド2に挿通さ
れ、その上端はブラケット15の内側に突出し、突出端
にピニオン23が固結される。また、このピニオン23
と噛み合うラック24はブラケット15に形成した水平
方向の貫通孔15Aに摺動自由に挿入され、その両端と
、延長方向に位置するスライダー19とをそれぞれ第3
図に示すようにワイヤー25と26が連結する。ワイヤ
ー25と26はスライダー19の異なる高さに取り付け
られ、ラック24はスライダー19の軸方向変位に伴っ
て移動するワイヤー25と26により水平方向に駆動さ
れる。なお、27はワイヤー25と26の移動を滑らか
にするためのローラである。
As a mechanism for transmitting the axial displacement of the slider 19 into the damper cylinder 1, wires 25 and 26 and a rack 24 are used.
A pinion 23 and an adjuster rod 22 are used. The adjuster rod 22 is inserted through the piston rod 2, its upper end projects inside the bracket 15, and a pinion 23 is fixed to the projecting end. Also, this pinion 23
The rack 24 that engages with the bracket 15 is slidably inserted into the horizontal through hole 15A formed in the bracket 15, and the both ends of the rack 24 and the slider 19 located in the extending direction are respectively inserted into the third through hole 15A.
Wires 25 and 26 are connected as shown. The wires 25 and 26 are attached to the slider 19 at different heights, and the rack 24 is driven horizontally by the wires 25 and 26, which move with the axial displacement of the slider 19. Note that 27 is a roller for smoothing the movement of the wires 25 and 26.

7ノヤスタロツド22はピストンレッド2及びピストン
4を貫通し、先端にはピストン4の下方を遮ろうように
7シヤスタプレート28が装着され、またピストンロッ
ド2のボート6に面してアジャスタスリーブ29が装着
される。これらはいずれもアジャスタロッド22と一体
に回転し、回転位置に応じて抽選を制限する可変オリフ
ィスとして機能する。アジャスタプレート28には第4
図に示すようにボート5に対応する位置に長さの異なる
艮礼状のボート30が、ピストンロッド2の内側に連通
する位置にボート31がそれぞれ形成される。また、ア
ジャスタスリーブ29は第7図に示すようにピストンロ
ッド2の内周に摺接し、下方に連通する樋状の切欠を回
転位置に応じてボート6に臨ませるようになっている。
The 7-shaft star rod 22 passes through the piston red 2 and the piston 4, and a 7-shastar plate 28 is attached to the tip so as to block the lower part of the piston 4, and an adjuster sleeve 29 faces the boat 6 of the piston rod 2. It will be installed. Each of these rotates together with the adjuster rod 22 and functions as a variable orifice that limits the lottery depending on the rotational position. The adjuster plate 28 has a fourth
As shown in the figure, bow-shaped boats 30 of different lengths are formed at positions corresponding to the boats 5, and boats 31 are formed at positions communicating with the inside of the piston rod 2. Further, as shown in FIG. 7, the adjuster sleeve 29 is in sliding contact with the inner periphery of the piston rod 2, and has a gutter-shaped notch communicating with the lower part facing the boat 6 depending on the rotational position.

次に作用を説明する。Next, the action will be explained.

圧側行程では、ピストンロッド2がダンパシリンダ1に
侵入するのに伴い、油室Bの作動油がボート5から油室
Aに流入するとともに、ピストンロッド2の侵入体積分
の作動油が油室Aの底部のパルプ8を押し開いて通路7
からリザーバタンク3に流出する。そして、やがて収縮
する懸架スプリング16のばね荷重の増加によりストロ
ーク位置検出スプリング17が撓み始め、スライダー1
9が上方へと変位する。これに伴い、スライダー19に
連結したワイヤー26がラック24を第3図の右方向へ
引っ張り、ラック24の移動によりピニオン23とアジ
ャスタロッド22とが回転変位する。その結果、アジャ
スタロッド22の先端に取り付けたアジャストプレート
28も第4図の時計方向へ回転するが、ボート30が長
孔に形成されているため行程の初期にはボート5の抽選
は全(妨げられない、しかし、圧側行程が進むにっれて
やがて第5図のようにボート5の一つが閉ざされ、緩衝
器がさらに収縮すると第6図のようにすべてのボート5
が遮断される。このため、油室Bから油室Aへの抽選は
ボー)5の流通が困難になるにつれてパルプ8から通路
7、パルプ13、通路11及びボート12を経由して行
なわれ、これらの抽選抵抗により大きな圧側減衰力を発
生させる。なお、油室Bの圧力によっては更にリリーフ
弁9が開いてパルプ8の流量が過大になるのを防止する
。このようにして圧側行程の後半ではアジャスタロッド
22の回転とともに減衰力が高まる。なお、スライダー
19がばね受21に当接するとストローク位置検出スプ
リング17のそれ以上の撓みは規制され、以後は懸架ス
プリング16のみが収縮するとともに、アジャスタロッ
ド22の回転がPt56図の位置で停止することにより
、発生減衰力は高レベルのまま膜圧状態に至る。
In the pressure side stroke, as the piston rod 2 enters the damper cylinder 1, the hydraulic oil in the oil chamber B flows from the boat 5 into the oil chamber A, and the hydraulic oil corresponding to the volume of the piston rod 2 that enters the oil chamber A. Push open the pulp 8 at the bottom of the passage 7.
It flows out into the reservoir tank 3. Then, as the spring load of the suspension spring 16 contracts, the stroke position detection spring 17 begins to bend, and the slider 1
9 is displaced upward. Accordingly, the wire 26 connected to the slider 19 pulls the rack 24 to the right in FIG. 3, and the movement of the rack 24 rotationally displaces the pinion 23 and the adjuster rod 22. As a result, the adjustment plate 28 attached to the tip of the adjuster rod 22 also rotates clockwise in FIG. However, as the compression stroke progresses, one of the boats 5 will eventually close as shown in Figure 5, and when the buffer further contracts, all the boats 5 will close as shown in Figure 6.
is blocked. For this reason, the drawing from oil chamber B to oil chamber A is carried out from pulp 8 via passage 7, pulp 13, passage 11 and boat 12 as the distribution of boat 5 becomes difficult, and due to these lottery resistances. Generates large compression damping force. Note that depending on the pressure in the oil chamber B, the relief valve 9 is further opened to prevent the flow rate of the pulp 8 from becoming excessive. In this way, in the latter half of the compression stroke, the damping force increases as the adjuster rod 22 rotates. Note that when the slider 19 comes into contact with the spring receiver 21, further deflection of the stroke position detection spring 17 is restricted, and from then on, only the suspension spring 16 contracts, and the rotation of the adjuster rod 22 stops at the position shown in Fig. Pt56. As a result, the generated damping force reaches a membrane pressure state while remaining at a high level.

−力、アジャスタスリーブ2つもアジャスタロッド22
と一体に回転するため、圧側行程の後半では第9図のよ
うにボート6が完全に閉鎖されている。したがって、緩
衝器が膜圧位置付近がら伸側作動に転じると、油室Aか
ら油室Bへ作動油が直接流入することはできず、ボート
12、通路11、パルプ14、通路7及びパルプ10の
経路で油室Bに流入し、これらの抵抗により始めから大
きな伸側減資力が発生する。しかし、懸架スプリング1
6が伸張するのに伴い、スライダー19が下方へ変位し
、ワイヤ25、ラック23及ゾピニオン23を介してア
ジャスタロッド22が圧側作動時と逆方向に回転するた
め、やがてアジャスタスリーブ29が第8図のようにボ
ート6をピストンロッド2の内側に解放し、油室Bの作
動油がボート6と31とを通って油室Aに流入し、伸側
減資力は低下する。そして、緩衝器が釣り合い位置付近
を越えて更に伸側へ作動すると、ボート6からの抽選は
第7図のように徐々に狭められ、伸側減衰力は再び上昇
する。一方、この伸側行程ではダンパシリンダ1からピ
ストンロッド2が退出するのに伴い、圧側行程でリザー
バタンク3に流出していた作動油も通路7及びパルプ1
0を通って油室Aに還流する。
- force, two adjuster sleeves and adjuster rod 22
9, the boat 6 is completely closed in the latter half of the compression stroke as shown in FIG. Therefore, when the shock absorber switches to expansion side operation from near the membrane pressure position, hydraulic oil cannot directly flow from oil chamber A to oil chamber B, and boat 12, passage 11, pulp 14, passage 7, and pulp 10 cannot flow directly from oil chamber A to oil chamber B. The oil flows into the oil chamber B through this route, and due to these resistances, a large expansion-side capital reduction force is generated from the beginning. However, suspension spring 1
6 is extended, the slider 19 is displaced downward, and the adjuster rod 22 is rotated via the wire 25, the rack 23, and the zopinion 23 in the opposite direction to that during the compression side operation, so that the adjuster sleeve 29 eventually moves to the position shown in FIG. When the boat 6 is released inside the piston rod 2, the hydraulic oil in the oil chamber B flows into the oil chamber A through the boats 6 and 31, and the extension side reduction force is reduced. Then, when the shock absorber moves beyond the vicinity of the equilibrium position and further moves toward the rebound side, the draw from the boat 6 is gradually narrowed as shown in FIG. 7, and the rebound damping force increases again. On the other hand, as the piston rod 2 withdraws from the damper cylinder 1 in this expansion stroke, the hydraulic oil that had flowed into the reservoir tank 3 in the compression stroke also flows into the passage 7 and into the pulp 1.
0 and returns to oil chamber A.

このように、この緩衝器では伸圧両側の減衰力がストロ
ーク位置に依存して変化することにより、緩衝器のつり
合い位置付近では小さな減衰力で柔らかい木り心地が確
保される一方、大きなストロークに対しては強力な減衰
力が働くため底づきや伸び切りの恐れもなく、走行条件
を問わず快適に走行できる。
In this way, with this shock absorber, the damping force on both sides of the extension changes depending on the stroke position, so that near the balance position of the shock absorber, a soft feel is ensured with a small damping force, but when a large stroke On the other hand, a strong damping force works, so there is no fear of bottoming out or overextension, and you can drive comfortably regardless of the driving conditions.

なお、7ジヤスタスリーブ29の断面形状を第10図の
ように形成すれば、伸側減衰力は緩衝器かつり合い位置
を越えて伸張側へ作動した時にのみ増加する。
If the cross-sectional shape of the 7-jaster sleeve 29 is formed as shown in FIG. 10, the rebound-side damping force increases only when the shock absorber moves beyond the balance position and moves toward the extension side.

また、スライダー19の軸方向変位をダンパシリンダ1
内へ伝達する8!構として、アジャスタロッド22を第
11図に示すようにスライダー19から内側へ相対して
突設したスクリエー〃イド32とアジャスタロッド22
に固結したロータリースクリュー33とで回転駆動する
ことも可能である。
In addition, the axial displacement of the slider 19 is controlled by the damper cylinder 1.
Communicate inward 8! As shown in FIG.
It is also possible to drive the rotation with a rotary screw 33 fixed to the rotary screw 33.

この場合に、ロータリースクリュー3″4−の側面には
螺旋状の溝が形成され、スクリューガイド32の先端が
この溝に係合している。このため、スラスフリシ イダー19が上下に変位すると出=≠イー Ifイド3
2を介してロータリースクリュー3中が回転する。
In this case, a spiral groove is formed on the side surface of the rotary screw 3''4-, and the tip of the screw guide 32 engages with this groove.For this reason, when the slushy slider 19 is displaced up and down, Out=≠E If id 3
The rotary screw 3 rotates through the rotary screw 2.

第12図はストローク位置検出スプリング17とスライ
ダー19とをグンパシリンダー側に介装した本発明の1
#2実施例である。ダンパシリンダ−は単一の筒状に形
成され、底部に油室Bとリザーバタンク3に至る通路7
とを連通するボート36が上下方向に形成される。そし
て、このボート36を横断して水平方向に摺動孔35を
形成し、この中にスプール37を摺動自由に収装する。
FIG. 12 shows an embodiment of the present invention in which a stroke position detection spring 17 and a slider 19 are interposed on the Gunpa cylinder side.
This is Example #2. The damper cylinder is formed into a single cylindrical shape, and has a passage 7 at the bottom leading to the oil chamber B and the reservoir tank 3.
A boat 36 is formed in the vertical direction to communicate with the above. A sliding hole 35 is formed in the horizontal direction across the boat 36, and a spool 37 is housed in the sliding hole 35 so as to be freely slidable.

スプール37には可変オリフィスとしてボート36と交
錯する位置に小径の異径部37Aが形成され、スプール
37の両端はスライダー19の内周に変位伝達機構とし
て相対して形成したテーパ部19Aと19Bとに当接す
る。スライダー19はダンパシリンダーの外側に摺動自
由に嵌合し、懸架スプリング16のばね受20とストロ
ーク位置検出スプリング17の上端との間に保持される
。また、ストローク位置検出スプリング17の下端はダ
ンパシリンダ1の外側に蝶合したばね受21に支持され
る。
A small diameter portion 37A is formed in the spool 37 as a variable orifice at a position where it intersects with the boat 36, and both ends of the spool 37 have tapered portions 19A and 19B formed facing each other on the inner periphery of the slider 19 as a displacement transmission mechanism. comes into contact with. The slider 19 is slidably fitted to the outside of the damper cylinder and is held between the spring receiver 20 of the suspension spring 16 and the upper end of the stroke position detection spring 17. Further, the lower end of the stroke position detection spring 17 is supported by a spring receiver 21 hinged to the outside of the damper cylinder 1.

この緩衝器においては圧側作動によりスライダー19が
下方へ変位すると、テーパ部19Aと19Bにガイドさ
れたスプール37が図の左方向へ摺動し、小径の異径W
S37Aがボート35の側方へずれることによりボート
35の流通断面積が挟まり、油室Bからリザーバタンク
3への作動油流出抵抗が大きくなるために減衰力が増加
する。なお、ボート35と並設したチェック弁38によ
り伸側作動時にはリザーバタンク3から作動油が油室B
に抵抗なく還流するため、この緩衝器では圧側減衰力の
みが位置依存型の特性を示す。
In this shock absorber, when the slider 19 is displaced downward due to pressure side operation, the spool 37 guided by the tapered portions 19A and 19B slides to the left in the figure, and the small diameter W
As S37A shifts to the side of the boat 35, the flow cross-sectional area of the boat 35 is pinched, and the resistance to flow of hydraulic oil from the oil chamber B to the reservoir tank 3 increases, so that the damping force increases. In addition, a check valve 38 installed in parallel with the boat 35 allows hydraulic oil to flow from the reservoir tank 3 to the oil chamber B during expansion side operation.
Since the damping force flows back without resistance, only the compression damping force in this buffer exhibits position-dependent characteristics.

(発明の効果) 以上のように、本発明は懸架スプリングとストローク位
置検出スプリングに挾持されたスライド部材の軸方向変
位とグンパシリンダ内部の可変片17 フイスの断面積
の変化とを連動させたため、緩衝器の伸縮とともに可変
オリフィスの断面積が変化し、電気的手段を介在させる
ことなく位置依存型の減衰力特性を得ることができる。
(Effects of the Invention) As described above, the present invention links the axial displacement of the slide member held by the suspension spring and the stroke position detection spring to the change in the cross-sectional area of the variable piece 17 inside the Gunpa cylinder. The cross-sectional area of the variable orifice changes as the buffer expands and contracts, making it possible to obtain position-dependent damping force characteristics without intervening electrical means.

したがって、懸架スプリング外装型の緩衝器の緩衝機能
を経済的かつ簡易に向上させることができる。
Therefore, the buffering function of the suspension spring external shock absorber can be improved economically and easily.

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

第1図は本発明の実施例を示す油圧緩衝器の断面図、第
2図及び第3図は要部を拡大した断面図、第4図〜第6
図はそれぞれ作動状態を示す第2図中のI−I矢視図、
第7図〜第9図は同じくそれぞれ作動状態を示す■−■
矢視図、第10図はアジャスタスリープについて別の構
成を示す断面図、第11図はスライド部材の変位伝達機
構について別の構成を示す緩衝器の要部断面図である。 また、第12図は本発明の第2実施例を示す油圧緩衝器
の断面図である。 1・・・ダンパシリンダ、2・・・ピストンロッド、1
6・・・懸架スプリング、17・・・ス)O−り位置検
出スプリング、19・・・スライダー、22・・・アジ
ャスタロッド、23・・・ピニオン、24・・・ラック
、25゜26・・・ワイヤー、28・・・7ツヤスタプ
レート、29・・・アジャスタスリーブ。 特許出願人       カヤバエ業株式会社第2図 第3図 第11図
Fig. 1 is a sectional view of a hydraulic shock absorber showing an embodiment of the present invention, Figs. 2 and 3 are enlarged sectional views of main parts, and Figs. 4 to 6.
The figures are a view taken along the arrow II in Fig. 2, showing the operating state, respectively;
Figures 7 to 9 also show the operating states ■-■
10 is a cross-sectional view showing another configuration of the adjuster sleeve, and FIG. 11 is a cross-sectional view of a main part of the shock absorber showing another configuration of the displacement transmission mechanism of the slide member. Further, FIG. 12 is a sectional view of a hydraulic shock absorber showing a second embodiment of the present invention. 1... Damper cylinder, 2... Piston rod, 1
6... Suspension spring, 17... O-position detection spring, 19... Slider, 22... Adjuster rod, 23... Pinion, 24... Rack, 25° 26...・Wire, 28...7 gloss star plate, 29...adjuster sleeve. Patent applicant: Kayabae Gyo Co., Ltd. Figure 2 Figure 3 Figure 11

Claims (1)

【特許請求の範囲】[Claims] 作動油を充填したダンパシリンダとこれに摺動自由に挿
入したピストンロッドからなる緩衝器本体の外側に懸架
スプリングを配設し、ピストンロッドの摺動に対して作
動油を所定の抵抗のもとに流通させる油通路をダンパシ
リンダに形成した油圧緩衝器において、懸架スプリング
と直列にストローク位置検出用のスプリングを配設し、
これらの間に挾持されて輪方向に変位自由なスライド部
材を緩衝器本体の外側に配置し、このスライド部材の軸
方向変位を、前記油通路の断面積を変化させる可変オリ
フィスに伝達する機構を備えたことを特徴とする油圧緩
衝器。
A suspension spring is installed on the outside of the shock absorber body, which consists of a damper cylinder filled with hydraulic oil and a piston rod slidably inserted into the damper cylinder, and the hydraulic oil is placed under a specified resistance against the sliding of the piston rod. In a hydraulic shock absorber with an oil passage formed in the damper cylinder, a spring for stroke position detection is arranged in series with the suspension spring.
A sliding member that is sandwiched between these members and can be freely displaced in the ring direction is disposed outside the shock absorber body, and a mechanism is provided for transmitting the axial displacement of the sliding member to a variable orifice that changes the cross-sectional area of the oil passage. A hydraulic shock absorber characterized by being equipped with.
JP62149889A 1987-06-16 1987-06-16 Hydraulic shock absorber Expired - Fee Related JP2685183B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62149889A JP2685183B2 (en) 1987-06-16 1987-06-16 Hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62149889A JP2685183B2 (en) 1987-06-16 1987-06-16 Hydraulic shock absorber

Publications (2)

Publication Number Publication Date
JPS63312533A true JPS63312533A (en) 1988-12-21
JP2685183B2 JP2685183B2 (en) 1997-12-03

Family

ID=15484850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62149889A Expired - Fee Related JP2685183B2 (en) 1987-06-16 1987-06-16 Hydraulic shock absorber

Country Status (1)

Country Link
JP (1) JP2685183B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286641B1 (en) * 1997-06-05 2001-09-11 Donerre Amortisseur Oil brake
US6745876B2 (en) * 2001-09-17 2004-06-08 Zf Sachs Ag Piston-cylinder assembly
CN106949819A (en) * 2016-08-31 2017-07-14 浙江山海机械有限公司 Iolation type eccentricity gauge
CN113685476A (en) * 2021-08-30 2021-11-23 常州大学 Liquid damper with damping force jumping along with displacement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5545710B2 (en) 2009-09-08 2014-07-09 ヤマハ発動機株式会社 Cushion device and motorcycle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203246A (en) * 1982-05-20 1983-11-26 Atsugi Motor Parts Co Ltd Shock absorber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203246A (en) * 1982-05-20 1983-11-26 Atsugi Motor Parts Co Ltd Shock absorber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286641B1 (en) * 1997-06-05 2001-09-11 Donerre Amortisseur Oil brake
US6745876B2 (en) * 2001-09-17 2004-06-08 Zf Sachs Ag Piston-cylinder assembly
CN106949819A (en) * 2016-08-31 2017-07-14 浙江山海机械有限公司 Iolation type eccentricity gauge
CN113685476A (en) * 2021-08-30 2021-11-23 常州大学 Liquid damper with damping force jumping along with displacement
CN113685476B (en) * 2021-08-30 2022-09-23 常州大学 Liquid damper with damping force jumping along with displacement

Also Published As

Publication number Publication date
JP2685183B2 (en) 1997-12-03

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