JPH01131056U - - Google Patents

Info

Publication number
JPH01131056U
JPH01131056U JP2794788U JP2794788U JPH01131056U JP H01131056 U JPH01131056 U JP H01131056U JP 2794788 U JP2794788 U JP 2794788U JP 2794788 U JP2794788 U JP 2794788U JP H01131056 U JPH01131056 U JP H01131056U
Authority
JP
Japan
Prior art keywords
oil
oil chamber
chamber
cylinder
piston
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
JP2794788U
Other languages
Japanese (ja)
Other versions
JPH0637219Y2 (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 JP2794788U priority Critical patent/JPH0637219Y2/en
Publication of JPH01131056U publication Critical patent/JPH01131056U/ja
Application granted granted Critical
Publication of JPH0637219Y2 publication Critical patent/JPH0637219Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Fluid-Damping Devices (AREA)

Description

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

第1図は本考案のオートテンシヨナ用アクチユ
エータの一実施例を示す縦断面図、第2図はシリ
ンダ内径に対するポールストロークをパラメータ
として、第1油路径に対する第2油路径の違いに
よるピストン及びプツシユロツドの突出速度の変
化を示したグラフ、第3図は第1油路径に対する
第2油路径をパラメータとしたポールストローク
の違いによるピストン及びプツシユロツドの収束
時間の変化を示したグラフ、第4図はシリンダ内
径に対するボールストロークをパラメータとして
、第1油路の最小管路径に対する第2油路径の違
いによるピストン及びプツシユロツドの収束時間
の変化を示したグラフ、第5図は従来例を示す構
成図を夫々表す。 6′……アクチユエータ、61……シリンダ、
62……ピストン、63……プツシユロツド、6
1a……リザーバ室、61b……第1油室、61
e……第2油室、65a……チエツクボール、7
0……第1油路、80……第2油路。
Fig. 1 is a vertical cross-sectional view showing an embodiment of the actuator for an autotensioner of the present invention, and Fig. 2 shows the piston and push rod according to the difference in the diameter of the second oil passage with respect to the diameter of the first oil passage, using the pole stroke with respect to the cylinder inner diameter as a parameter. Figure 3 is a graph showing changes in the convergence time of the piston and push rod due to differences in pole stroke using the diameter of the second oil passage as a parameter relative to the diameter of the first oil passage, Figure 4 is a graph showing changes in the convergence time of the piston and push rod. A graph showing the change in the convergence time of the piston and push rod due to the difference in the diameter of the second oil passage with respect to the minimum pipe diameter of the first oil passage, using the ball stroke with respect to the inner diameter as a parameter, and Fig. 5 shows a configuration diagram showing a conventional example. . 6'... Actuator, 61... Cylinder,
62... Piston, 63... Push rod, 6
1a... Reservoir chamber, 61b... First oil chamber, 61
e...Second oil chamber, 65a...Check ball, 7
0...first oilway, 80...second oilway.

Claims (1)

【実用新案登録請求の範囲】 1 プツシユロツドを一体に固着したピストンと
、同ピストンを摺動自在に内嵌すると共に作動油
が充填されたシリンダと、上記シリンダ外部に設
けられ上記シリンダ内部の油圧を調整する油圧調
整室とを有するオートテンシヨナ用アクチユエー
タにおいて、上記ピストンにより上記シリンダ内
を第1油室と第2油室へに区画し、上記ピストン
を上記第2油室側へ付勢するスプリングを配設す
る一方、上記ピストン又はプツシユロツドに穿設
されて、上記第1油室と上記第2油室とを連通す
る第1油路と、上記第1油室内に開口した上記第
1油路開口部に設けられ、かつ、上記開口部を閉
塞する第1の位置と、上記開口部を開放する第2
の位置との間において上記ピストンの移動方向と
同方向に移動可能な弁体を有し、上記第1の位置
において上記第1油室から上記第2油室への作動
油の流入を阻止し、上記第2の位置において上記
第2油室から上記第1油室への作動油の流入を可
能とする逆止弁と、上記第2油室と上記油圧調整
室とを連通させる第2油路とを設けるとともに、
上記第1油路の管路径を上記第2油路の管路径よ
りも大きくし、上記逆止弁の弁体移動距離を上記
シリンダの内径の1.5%以上に設定したことを
特徴とするオートテンシヨナ用アクチユエータ。 2 プツシユロツドを一体に固着したピストンと
、同ピストンを摺動自在に内嵌すると共に作動油
が充填されたシリンダと、上記シリンダ外部に設
けられ上記シリンダ内部の油圧を調整する油圧調
整室とを有するオートテンシヨナ用アクチユエー
タにおいて、上記ピストンにより上記シリンダ内
を第1油室と第2油室とに区画する一方、上記ピ
ストン又はプツシユロツドに穿設されて、上記第
1油室と上記第2油室とを連通する第1油路と、
上記第1油室に開口した上記第1油路開口部近傍
に上記第1油室から上記第2油室への作動油の逆
流を阻止する逆止弁と、上記第2油室と上記油圧
調整室とを連通させる第2油路とを設けるととも
に、上記第2油路の管路径を上記第1油路の最小
管路径の70%以下に設定したことを特徴とする
オートテンシヨン用アクチユエータ。
[Scope of Claim for Utility Model Registration] 1. A piston having a push rod integrally fixed thereto, a cylinder in which the piston is slidably fitted and filled with hydraulic oil, and a cylinder provided outside the cylinder to control the hydraulic pressure inside the cylinder. In an actuator for an autotensioner having a hydraulic pressure adjustment chamber for adjustment, the piston divides the inside of the cylinder into a first oil chamber and a second oil chamber, and a spring biases the piston toward the second oil chamber. a first oil passage bored in the piston or push rod and communicating the first oil chamber and the second oil chamber; and the first oil passage opening into the first oil chamber. a first position that is provided in the opening and closes the opening; and a second position that opens the opening.
and a valve body movable in the same direction as the moving direction of the piston, and prevents hydraulic oil from flowing from the first oil chamber to the second oil chamber in the first position. , a check valve that allows hydraulic oil to flow from the second oil chamber to the first oil chamber in the second position; and a second oil that communicates the second oil chamber with the oil pressure adjustment chamber. In addition to establishing a road,
The pipe diameter of the first oil passage is larger than the pipe diameter of the second oil passage, and the valve body movement distance of the check valve is set to 1.5% or more of the inner diameter of the cylinder. Actuator for auto tensioner. 2. It has a piston to which a push rod is fixed integrally, a cylinder in which the piston is slidably fitted and filled with hydraulic oil, and a hydraulic pressure adjustment chamber provided outside the cylinder to adjust the hydraulic pressure inside the cylinder. In the actuator for an autotensioner, the piston divides the inside of the cylinder into a first oil chamber and a second oil chamber, and a hole is bored in the piston or push rod to separate the first oil chamber and the second oil chamber. a first oil passage communicating with the
A check valve that prevents backflow of hydraulic oil from the first oil chamber to the second oil chamber is provided near the first oil passage opening opened in the first oil chamber, and the second oil chamber and the hydraulic pressure are provided. An actuator for autotension, characterized in that a second oil passage communicating with an adjustment chamber is provided, and the pipe diameter of the second oil passage is set to 70% or less of the minimum pipe diameter of the first oil passage. .
JP2794788U 1988-03-02 1988-03-02 Actuator for auto tensioner Expired - Lifetime JPH0637219Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2794788U JPH0637219Y2 (en) 1988-03-02 1988-03-02 Actuator for auto tensioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2794788U JPH0637219Y2 (en) 1988-03-02 1988-03-02 Actuator for auto tensioner

Publications (2)

Publication Number Publication Date
JPH01131056U true JPH01131056U (en) 1989-09-06
JPH0637219Y2 JPH0637219Y2 (en) 1994-09-28

Family

ID=31250891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2794788U Expired - Lifetime JPH0637219Y2 (en) 1988-03-02 1988-03-02 Actuator for auto tensioner

Country Status (1)

Country Link
JP (1) JPH0637219Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365041U (en) * 1989-10-27 1991-06-25
JP2012052587A (en) * 2010-08-31 2012-03-15 Yakumo Kk Oil damper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365041U (en) * 1989-10-27 1991-06-25
JP2012052587A (en) * 2010-08-31 2012-03-15 Yakumo Kk Oil damper

Also Published As

Publication number Publication date
JPH0637219Y2 (en) 1994-09-28

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