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JPH0192536U - - Google Patents

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Publication number
JPH0192536U
JPH0192536U JP18959287U JP18959287U JPH0192536U JP H0192536 U JPH0192536 U JP H0192536U JP 18959287 U JP18959287 U JP 18959287U JP 18959287 U JP18959287 U JP 18959287U JP H0192536 U JPH0192536 U JP H0192536U
Authority
JP
Japan
Prior art keywords
bypass passage
cylinder
oil chamber
chamber
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
JP18959287U
Other languages
Japanese (ja)
Other versions
JPH06669Y2 (en
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 filed Critical
Priority to JP1987189592U priority Critical patent/JPH06669Y2/en
Publication of JPH0192536U publication Critical patent/JPH0192536U/ja
Application granted granted Critical
Publication of JPH06669Y2 publication Critical patent/JPH06669Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Fluid-Damping Devices (AREA)

Description

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

第１図は本考案の一実施例に係る油圧緩衝器の
を示す縦断正面図、第２図は従来例としての油圧
緩衝器を一部切り欠いて示す縦断正面図である。 符号の説明、１…外筒、２…内筒、３…シリン
ダ、４…ピストン、５…ピストンロツド、６…隔
壁部材、６ａ…チエツク弁、７…伸側減衰バルブ
、８…圧側減衰バルブ、９…開放弁、９ａ…弁本
体、９ｂ…コイルスプリング、Ａ…上方油室、Ｂ
…下方油室、Ｃ…リザーバ室、Ｄ…ガス室、Ｒ…
バイパス路。 FIG. 1 is a longitudinal sectional front view showing a hydraulic shock absorber according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional front view showing a conventional hydraulic shock absorber with a portion cut away. Explanation of symbols: 1... Outer cylinder, 2... Inner cylinder, 3... Cylinder, 4... Piston, 5... Piston rod, 6... Partition member, 6a... Check valve, 7... Rebound side damping valve, 8... Compression side damping valve, 9 ...Release valve, 9a...Valve body, 9b...Coil spring, A...Upper oil chamber, B
...Lower oil chamber, C...Reservoir chamber, D...Gas chamber, R...
bypass road.

Claims (1)

【実用新案登録請求の範囲】 (1) 下端内部に外部からの作動油の流入を許容
するチエツク弁を有するシリンダ内に摺動自在に
収装されると共にシリンダ内に挿通されたピスト
ンロツドの先端に連設されたピストンによつてシ
リンダ内に上方油室と下方油室とが区画形成され
、かつ、シリンダ内をピストンが下降する圧側行
程時に下方油室内の作動油が上方油室を介してシ
リンダ外のリザーバ室に流出するように形成され
てなる油圧緩衝器において、ピストンには伸側減
衰バルブおよび圧側減衰バルブが配設されてなる
と共に、ピストンロツド内には上方油室とリザー
バ室側とを連通するバイパス路が形成されてなり
、かつ、該バイパス路中にはシリンダ内をピスト
ンが下降する圧側行程時に下方油室内の油圧で作
動して該バイパス路を開放する開放弁が配設され
てなることを特徴とする油圧緩衝器。 (2) 開放弁が拡径されたバイパス路中に摺動自
在に収装されその前進時にバイパス路を遮断する
と共にその後退時にバイパス路を連通する弁本体
と、拡径されたバイパス路中に配設され弁本体を
前進方向に附勢するコイルスプリングとを有して
なる実用新案登録請求の範囲第１項記載の油圧緩
衝器。 (3) バイパス路の一端がリザーバ室上方のガス
室に開口してなる実用新案登録請求の範囲第１項
記載の油圧緩衝器。[Claims for Utility Model Registration] (1) A piston rod that is slidably housed in a cylinder that has a check valve inside its lower end that allows hydraulic oil to flow in from the outside, and that is inserted into the cylinder at the tip of the piston rod. An upper oil chamber and a lower oil chamber are defined in the cylinder by the pistons arranged in series, and during the pressure side stroke in which the piston descends inside the cylinder, the hydraulic oil in the lower oil chamber flows into the cylinder via the upper oil chamber. In a hydraulic shock absorber that is formed to flow into an external reservoir chamber, the piston is provided with a rebound damping valve and a compression damping valve, and the piston rod has an upper oil chamber and a reservoir chamber side. A communicating bypass passage is formed, and a release valve is disposed in the bypass passage, which is operated by hydraulic pressure in the lower oil chamber to open the bypass passage during a pressure side stroke in which the piston descends within the cylinder. A hydraulic shock absorber characterized by: (2) A release valve is slidably housed in the enlarged bypass passage, and a valve body that blocks the bypass passage when it moves forward and communicates with the bypass passage when it retreats; The hydraulic shock absorber according to claim 1, which is a registered utility model and includes a coil spring disposed to bias the valve body in the forward direction. (3) The hydraulic shock absorber according to claim 1, wherein one end of the bypass passage opens into the gas chamber above the reservoir chamber.
JP1987189592U 1987-12-14 1987-12-14 Hydraulic shock absorber Expired - Lifetime JPH06669Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987189592U JPH06669Y2 (en) 1987-12-14 1987-12-14 Hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987189592U JPH06669Y2 (en) 1987-12-14 1987-12-14 Hydraulic shock absorber

Publications (2)

Publication Number Publication Date
JPH0192536U true JPH0192536U (en) 1989-06-16
JPH06669Y2 JPH06669Y2 (en) 1994-01-05

Family

ID=31480611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987189592U Expired - Lifetime JPH06669Y2 (en) 1987-12-14 1987-12-14 Hydraulic shock absorber

Country Status (1)

Country Link
JP (1) JPH06669Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0333242U (en) * 1989-08-11 1991-04-02
JPH0360632U (en) * 1989-10-17 1991-06-14

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5889U (en) * 1981-06-26 1983-01-05 株式会社昭和製作所 front fork
JPS59156879A (en) * 1983-02-28 1984-09-06 株式会社昭和製作所 front fork
JPS6045195U (en) * 1983-08-31 1985-03-29 株式会社　昭和製作所 Rod type hydraulic shock absorber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5889U (en) * 1981-06-26 1983-01-05 株式会社昭和製作所 front fork
JPS59156879A (en) * 1983-02-28 1984-09-06 株式会社昭和製作所 front fork
JPS6045195U (en) * 1983-08-31 1985-03-29 株式会社　昭和製作所 Rod type hydraulic shock absorber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0333242U (en) * 1989-08-11 1991-04-02
JPH0360632U (en) * 1989-10-17 1991-06-14

Also Published As

Publication number Publication date
JPH06669Y2 (en) 1994-01-05

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