JPH01269740A - Valve device of hydraulic buffer - Google Patents
Valve device of hydraulic bufferInfo
- Publication number
- JPH01269740A JPH01269740A JP9964588A JP9964588A JPH01269740A JP H01269740 A JPH01269740 A JP H01269740A JP 9964588 A JP9964588 A JP 9964588A JP 9964588 A JP9964588 A JP 9964588A JP H01269740 A JPH01269740 A JP H01269740A
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- support
- piston
- insertion hole
- main body
- 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
Links
- 230000037431 insertion Effects 0.000 claims abstract description 21
- 238000003780 insertion Methods 0.000 claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 230000035939 shock Effects 0.000 claims description 11
- 238000013016 damping Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
- F16F9/3485—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自動車、自動二輪車等の車両における車体と車
軸間に介装されて路面からの振動を減衰する油圧緩衝器
のバルブ装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a valve device for a hydraulic shock absorber that is interposed between a vehicle body and an axle of a vehicle such as an automobile or a motorcycle to damp vibrations from a road surface.
この種、従来の油圧緩衝器は、矛３図、矛４図に示すよ
うに、アウターチューブ１内にインナーチューブが摺動
自在に挿入され、アウターチューブ１の下部中央からダ
ンパー用のシリンダ２が起立し、シリンダ２内にはピス
トン５を介してピストンロッド４が移動自在に挿入され
、ピストン３には圧ポート１０αと伸ボート１０が形成
され、圧ポート１０αの上部口端にはチエツクバルブ６
が開閉自在に設けられ、伸ボート１０の口端には複数の
リーフバルブからなる伸バルブ７が開閉自在に設けられ
ている為のが開発されている。この油圧緩衝器はダンパ
ー内蔵型フロントフォークとして使用されているが、ダ
ンパー単独の場合も同じである。In this type of conventional hydraulic shock absorber, as shown in Figures 3 and 4, an inner tube is slidably inserted into an outer tube 1, and a damper cylinder 2 is inserted from the center of the lower part of the outer tube 1. The piston rod 4 is movably inserted into the cylinder 2 via the piston 5, the piston 3 is formed with a pressure port 10α and an extension boat 10, and a check valve 6 is provided at the upper mouth end of the pressure port 10α.
An extension boat 10 has been developed in which an extension valve 7 consisting of a plurality of leaf valves is provided at the mouth end of the extension boat 10 so that it can be opened and closed. This hydraulic shock absorber is used as a front fork with a built-in damper, but it is also used with a damper alone.
各リーフバルブα、ｈ−−−ｎにはピストンロッド挿入
孔１１がそれぞれ形成され、この挿入孔１１にピストン
ロッド４の端部が貫通し、更ニ各リーフバルブα、ｈ−
−−ｎはピストン５の端面とサポート１２とで挾持され
、サポート１２のピストンロッド挿入孔１４を貫通する
ピストンロッド４はナツト１３で締め付けられている。A piston rod insertion hole 11 is formed in each of the leaf valves α, h---n, and the end of the piston rod 4 passes through this insertion hole 11.
--n is held between the end surface of the piston 5 and the support 12, and the piston rod 4 passing through the piston rod insertion hole 14 of the support 12 is tightened with a nut 13.
上記のバルブ装置ではサポート１２の縦巾がピストンロ
ッド挿入孔１１の内径より広いから、必然的に各リーフ
バルブα、ｂ−−−ｎの挾持面は点線で示すようにサポ
ート１２の縦巾と等しく、各リーフバルブα、ｈ−−−
ルの撓み代はこの点線の部分より外端となる。従って各
リーフバルブａ、ｈ−−−ｎの撓み量が十分にとれず、
ピストン５の伸ポート１０の出口における必要な開口面
積が確保できず、よって所望の減衰力をとれず、いろい
ろな使用条件に対応する油圧緩衝器が得られないという
問題がある。In the above valve device, since the vertical width of the support 12 is wider than the inner diameter of the piston rod insertion hole 11, the clamping surface of each leaf valve α, b---n is necessarily the same as the vertical width of the support 12 as shown by the dotted line. Equally, each leaf valve α, h---
The bending allowance of the cable will be at the outer end of this dotted line. Therefore, the amount of deflection of each leaf valve a, h---n cannot be taken sufficiently,
There is a problem in that the necessary opening area at the outlet of the extension port 10 of the piston 5 cannot be secured, and therefore a desired damping force cannot be obtained, and a hydraulic shock absorber that can meet various usage conditions cannot be obtained.
そこで、本発明の目的は、各リーフバルブの撓み代を十
分にとれ、減衰力特性を向上させる油圧緩衝器を提供す
ることである。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hydraulic shock absorber that allows sufficient deflection of each leaf valve and improves damping force characteristics.
上記の目的を達成するため、本発明の構成はシリンダ内
にピストンを介してピストンロッドが移動自在に挿入さ
れ、ピストンにポートを設け、このポートの出口にリー
フバルブを開閉自在に設け、リーフバルブの中央のピス
トンロッド挿入孔にピストンを貫通するピストンロッド
が挿入され、リーフバルブはピストンとサポートとで挾
持されている油圧緩衝器に於て、前記サポートは本体と
本体の端面に突出させた細長い支持部と本体及び支持部
を貫通するピストンロッド挿入孔とを有し、支持部の巾
がピストンロッド挿入孔の内径より小さく又はほぼ同一
に形成されていることを特徴とするものである。In order to achieve the above object, the present invention has a structure in which a piston rod is movably inserted into a cylinder via a piston, a port is provided in the piston, and a leaf valve is provided at the outlet of this port so as to be freely openable and closable. A piston rod passing through the piston is inserted into the piston rod insertion hole in the center of the hydraulic shock absorber, and the leaf valve is held between the piston and the support. It has a support part and a piston rod insertion hole passing through the main body and the support part, and is characterized in that the width of the support part is smaller than or almost the same as the inner diameter of the piston rod insertion hole.
サポートの支持部の巾がピストンロッド挿入孔の内径よ
り小さいから、この支持部で挾持されるリーフバルブの
挾持面も支持部の巾と同じで且つピストンロッド挿入孔
の内径より小さいが又はほぼ同一であるから、との挾持
面より外方の撓み代が大きくなり、ピストンのポートの
開口面積も大きくなる。Since the width of the support part of the support is smaller than the inner diameter of the piston rod insertion hole, the clamping surface of the leaf valve held by this support part is also the same as the width of the support part and smaller than, but almost the same as, the inner diameter of the piston rod insertion hole. Therefore, the amount of deflection outward from the clamping surface becomes larger, and the opening area of the port of the piston also becomes larger.
本発明の油圧緩衝器の基本構造は従来技術と同じである
。従来と異なるところはサポートの構造が異なるもので
あるから、同一の構造は同一の符すことで詳細は省略す
る。The basic structure of the hydraulic shock absorber of the present invention is the same as that of the prior art. The difference from the conventional one is the structure of the support, so the same structures will be referred to with the same reference numbers and the details will be omitted.
以下矛１図、矛２図にもとづいて実施例を説明する。Examples will be described below based on Figures 1 and 2.
ピストン５のポートたる伸ポート１０の出口に１枚又は
複数のリーフバルブのα、Ａ−−−ｎからなるバルブた
る伸バルブ７が開閉自在に設けられ、ピストン５を貫通
するピストンロッド４の端部は各リーフバルブα、Ａ−
−−ｎの中央のピストンロッド挿入孔１１を貫通してい
る。An extension valve 7, which is a valve consisting of one or more leaf valves α, A---n, is provided at the outlet of an extension port 10, which is a port of the piston 5, so that it can be opened and closed. The parts are each leaf valve α, A-
--It passes through the center piston rod insertion hole 11 of n.
ピストンロッド４はサポート１５を貫通し、更にナツト
１３で締め付けられ、これにより各リーフバルブα、ｈ
−−−ｎはピストン５の端面とサポート１５とで挾持さ
れる。The piston rod 4 passes through the support 15 and is further tightened with a nut 13, whereby each leaf valve α, h
---n is held between the end surface of the piston 5 and the support 15.
サポート１５は板状本体１８と本体１８の端面に突出す
る細長い支持部１７と支持部１７及び本体１８を貫通す
るピストンロッド挿入孔１６とから構成され、支持部１
７の縦巾ｌはピストンロッド挿入孔１６の内径より小さ
く又はほぼ同一に成形されている。The support 15 is composed of a plate-like main body 18, an elongated support part 17 protruding from the end surface of the main body 18, and a piston rod insertion hole 16 passing through the support part 17 and the main body 18.
The vertical width l of the piston rod insertion hole 16 is smaller than or approximately the same as the inner diameter of the piston rod insertion hole 16.
この為、サポート１５で挾持される各リーフバルブａ、
ｈ−−−ｎの挾持面Ｐの巾はピストンロッド挿入孔１１
の内径より小さく又はほぼ同一となり、との挾持面Ｐよ
り外方の撓み代が大きくなり、各リーフバルブα、ｈ−
−−ｎの撓み量も大きくなる。For this reason, each leaf valve a held by the support 15,
The width of the clamping surface P of h---n is the piston rod insertion hole 11
The inner diameter of each leaf valve α, h- is smaller than or almost the same as that of the leaf valve α, h-
--The amount of deflection of n also increases.
従ってポート１０からの油圧で各リーフバルブα、ｂ−
−−ｎが撓むとポート１０の開口面積が大きくとれる。Therefore, each leaf valve α, b-
-- When n is bent, the opening area of the port 10 can be increased.
従って減衰力特性も向上する。Therefore, the damping force characteristics are also improved.
本発明によれば、リーフバルブの撓み代が大きく、いい
かえれば、リーフバルブの撓み支点はピストンロッド挿
入孔の内径位置より中心位置に近い位置にあるから、従
来の撓み量の少ないリーフバルブに比べて、リーフバル
ブの撓み量が大きくなり、これによりピストンポートの
開口面積が大きくとれ、減衰力特性も向上する。According to the present invention, the amount of deflection of the leaf valve is large; in other words, the fulcrum of deflection of the leaf valve is located closer to the center position than the inner diameter position of the piston rod insertion hole, compared to conventional leaf valves that have a smaller amount of deflection. As a result, the amount of deflection of the leaf valve increases, which allows for a larger opening area of the piston port and improves the damping force characteristics.
牙１図は本発明の一実施例に係るバルブ装置の分解斜視
図、牙２図は同じくサポートの斜視図、牙３図は従来の
油圧緩衝器の一部切欠き断面図、牙４図は従来のバルブ
装置の分解斜視図である。
１・・・シリンダ、４・・・ピストンロッド、５−・拳
ピストン、１０・・・ボート、１１．１６・争・ピスト
ンロッド挿入孔、１５・・・サポート、１７・・・支持
部、１８・・・本体、α、 ｈ−−−ｎ■・リーフバル
ブ。Fig. 1 is an exploded perspective view of a valve device according to an embodiment of the present invention, Fig. 2 is a perspective view of the support, Fig. 3 is a partially cutaway sectional view of a conventional hydraulic shock absorber, and Fig. 4 is a partially cutaway sectional view of a conventional hydraulic shock absorber. FIG. 2 is an exploded perspective view of a conventional valve device. DESCRIPTION OF SYMBOLS 1... Cylinder, 4... Piston rod, 5-- Fist piston, 10... Boat, 11.16- Piston rod insertion hole, 15... Support, 17... Support part, 18 ...Main body, α, h---n■・Leaf valve.
Claims (1)
在に挿入され、ピストンにポートを設け、このポートの
出口にリーフバルブを開閉自在に設け、リーフバルブの
中央のピストンロッド挿入孔にピストンを貫通するピス
トンロッドが挿入され、リーフバルブはピストンとサポ
ートとで挾持されている油圧緩衝器に於て、前記サポー
トは本体と本体の端面に突出させた細長い支持部と本体
及び支持部を貫通するピストンロッド挿入孔とを有し、
支持部の巾がピストンロッド挿入孔の内径より小さく又
はほぼ同一に形成されていることを特徴とする油圧緩衝
器のバルブ装置。A piston rod is movably inserted into the cylinder via a piston, a port is provided on the piston, a leaf valve is provided at the outlet of this port so that it can be opened and closed freely, and the piston is inserted through the piston into the piston rod insertion hole in the center of the leaf valve. In a hydraulic shock absorber in which a rod is inserted and a leaf valve is held between a piston and a support, the support includes a main body, an elongated support portion protruding from the end face of the main body, and a piston rod inserted through the main body and the support portion. having a hole;
A valve device for a hydraulic shock absorber, characterized in that the width of the support portion is smaller than or substantially the same as the inner diameter of the piston rod insertion hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9964588A JPH01269740A (en) | 1988-04-22 | 1988-04-22 | Valve device of hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9964588A JPH01269740A (en) | 1988-04-22 | 1988-04-22 | Valve device of hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01269740A true JPH01269740A (en) | 1989-10-27 |
Family
ID=14252789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9964588A Pending JPH01269740A (en) | 1988-04-22 | 1988-04-22 | Valve device of hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01269740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6672436B1 (en) * | 2000-04-19 | 2004-01-06 | Tenneco Automotive Operating Company Inc. | Variable bleed orifice valving |
| EP1314908A3 (en) * | 2001-11-21 | 2004-07-21 | Tenneco Automotive Inc. | Hydraulic damper comprising a damping valve unit |
| WO2011060863A1 (en) * | 2009-11-20 | 2011-05-26 | Volkswagen Aktiengesellschaft | Damper valve |
-
1988
- 1988-04-22 JP JP9964588A patent/JPH01269740A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6672436B1 (en) * | 2000-04-19 | 2004-01-06 | Tenneco Automotive Operating Company Inc. | Variable bleed orifice valving |
| EP1314908A3 (en) * | 2001-11-21 | 2004-07-21 | Tenneco Automotive Inc. | Hydraulic damper comprising a damping valve unit |
| WO2011060863A1 (en) * | 2009-11-20 | 2011-05-26 | Volkswagen Aktiengesellschaft | Damper valve |
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