JPS6374543U

JPS6374543U -

Info

Publication number: JPS6374543U
Application number: JP16965886U
Authority: JP
Priority date: 1986-11-05
Filing date: 1986-11-05
Publication date: 1988-05-18

Description

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

第１図は本考案の実施例に係る回路図、第２図
はチルトダンパの縦断正面図、第３図は第２図の
Ｘ―Ｘ線縦断側面図である。１……シリンダ、２……ピストン、３……ピス
トンロツド、４……第１の油室、５……第２の油
室、６……チエツクバルブ、７……バイパス、９
……リリーフバルブ、１１……加圧タンク。 FIG. 1 is a circuit diagram according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional front view of the tilt damper, and FIG. 3 is a longitudinal sectional side view taken along the line XX of FIG. 2. 1... Cylinder, 2... Piston, 3... Piston rod, 4... First oil chamber, 5... Second oil chamber, 6... Check valve, 7... Bypass, 9
... Relief valve, 11 ... Pressurized tank.

Claims

【実用新案登録請求の範囲】 (1) シリンダ内にピストンを介してピストンロ
ツドが移動自在に挿入され、ピストンはシリンダ
内にピストンロツド側の第１油室とピストンロツ
ドと反対側の第２の油室とを区画し、第１、第２
の油室はバイパスを介して連通すると共に異常な
圧力上昇時に開口するピストン内のリリーフバル
ブを介して連通し、バイパス内にはチエツクバル
ブが開閉自在に設けられ、更にチエツクバルブよ
り下流側のバイパスと前記第２の油室は加圧タン
クに接続されているダンパ。 (2) チエツクバルブは外部操作で開口する実用
新案登録請求の範囲第１項記載のダンパ。 (3) 加圧タンクがシリンダ外に設けられている
実用新案登録請求の範囲第１項記載のダンパ。 (4) シリンダの任意の位置にバルブボデイを設
け、バルブボデイには加圧タンクと第２の油室を
通じさせる通路と第１、第２の油室を通じさせる
通路とが形成され、第１、第２の油室を通じさせ
る通路の途中に閉じ方向に付勢されたチエツクバ
ルブと該チエツクバルブと対向するプツシユロツ
ドとが設けられ、プツシユロツドの外端は回転自
在な操作レバーと対向し、この操作レバーには水
平面と凹部が設けられ、操作レバーの回動により
プツシユロツドが選択的に水平面又は凹部と当接
する実用新案登録請求の範囲第１項記載のダンパ
。[Claims for Utility Model Registration] (1) A piston rod is movably inserted into the cylinder via a piston, and the piston has a first oil chamber on the side of the piston rod and a second oil chamber on the opposite side of the piston rod. The first and second
The oil chambers communicate through a bypass and a relief valve in the piston that opens when there is an abnormal pressure rise.A check valve is provided in the bypass so that it can be opened and closed freely, and a bypass downstream of the check valve is also installed. and a damper in which the second oil chamber is connected to a pressurized tank. (2) The damper according to claim 1, wherein the check valve is opened by external operation. (3) The damper according to claim 1, wherein the pressurized tank is provided outside the cylinder. (4) A valve body is provided at an arbitrary position of the cylinder, and the valve body is formed with a passage that communicates the pressurized tank and the second oil chamber, and a passage that communicates the first and second oil chambers. A check valve biased in the closing direction and a push rod facing the check valve are provided in the middle of the passage leading to the oil chamber, and the outer end of the push rod faces a rotatable operating lever, and the operating lever has a 2. The damper according to claim 1, wherein a horizontal surface and a recess are provided, and the push rod selectively comes into contact with the horizontal surface or the recess by rotating the operating lever.