JPH0180845U

JPH0180845U -

Info

Publication number: JPH0180845U
Application number: JP1987176292U
Authority: JP
Priority date: 1987-11-18
Filing date: 1987-11-18
Publication date: 1989-05-30

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を示す液圧緩衝器の
絞り弁の断面図である。１…シリンダ、２…ピストンロツド、３…ピス
トン、４…窪み、５…伸側液体通路、６…圧側液
体通路、７…デイスクバルブ、１１…周壁、１２
…環状オリフイス、１３…オリフイス形成体、１
４…チエツクバルブ、Ａ…上部室、Ｂ…下部室。 FIG. 1 is a sectional view of a throttle valve of a hydraulic shock absorber showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Cylinder, 2... Piston rod, 3... Piston, 4... Hollow, 5... Extension side liquid passage, 6... Compression side liquid passage, 7... Disc valve, 11... Peripheral wall, 12
... Annular orifice, 13 ... Orifice forming body, 1
4...Check valve, A...Upper chamber, B...Lower chamber.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

液体が充填されたシリンダに抜差自在に嵌挿さ
れたピストンロツドに固定され、シリンダ内を上
部室と下部室とに画成するピストンには、下部室
側に開口する窪みが形成されると共に、この窪み
を介して上部室と下部室とを連通する伸側液体通
路が形成される一方、この窪みを介することなく
下部室と上部室とを連通する圧側液体通路が形成
され、前記伸側液体通路の窪み側開口端には、伸
側液体通路を開閉するデイスクバルブが配設され
、このデイスクバルブの背面側には、ピストンロ
ツドが固定され、前記窪みの周壁との間に環状オ
リフイスを形成するオリフイス形成体が配設され
る一方、前記圧側液体通路の上部室側開口端には
、圧側液体通路を開閉するチエツクバルブが配設
されたことを特徴とする液圧緩衝器の絞り弁構造
。 The piston, which is fixed to a piston rod that is removably inserted into a cylinder filled with liquid and which defines the inside of the cylinder into an upper chamber and a lower chamber, has a recess that opens toward the lower chamber, and A growth side liquid passage is formed that communicates the upper chamber and the lower chamber through this depression, while a pressure side liquid passage is formed that communicates the lower chamber and the upper chamber without going through this depression, and the expansion side liquid A disc valve for opening and closing the extension side liquid passage is disposed at the opening end of the passageway on the recess side, and a piston rod is fixed to the back side of the disc valve, forming an annular orifice between it and the peripheral wall of the recess. A throttle valve structure for a hydraulic shock absorber, characterized in that an orifice forming body is disposed, and a check valve for opening and closing the pressure side liquid passage is disposed at an open end of the pressure side liquid passage on the upper chamber side.