JPS5956446U - Hydraulic shock absorber damping force adjustment mechanism - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

図面は本考案の一実施例を示すものであり、第１図は油
圧緩衝器の縦断側面図、第２図は第１図２−２線拡大断
面図、第３図は第１図３−３線拡大断面図、第４図、第
５図は夫々圧縮行程時、伸長行程時における調整機構の
作用を示す破断側面図、第６図は減衰力特性線図、第７
図は減衰力の温度特性線図である。 尚図面中１は油圧緩衝器、２はシリンダ、３は中空ピス
トンロフド、４はピストン、５はケース部材、６は固定
部材、７はブツシュロッド、１８は調整ダイヤル、１９
はバルブシート、１９ａは油孔、２０はセレクトバルブ
、２Ｑａ、２Ｑｂ。 ２０Ｃ，２０ｄはオリフィス、２１はスプリング、２２
はチェックバルブ、Ｓｌは上部作動室、Ｓ２は下部作動
室、Ｓ３は空間部、ΔＳは隙間である。 第４図 −−Ｎ＼しニΔThe drawings show an embodiment of the present invention, in which Fig. 1 is a vertical side view of a hydraulic shock absorber, Fig. 2 is an enlarged sectional view taken along the line 2-2 in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line 3-3 in Fig. 3-line enlarged sectional view, FIGS. 4 and 5 are broken side views showing the action of the adjustment mechanism during the compression stroke and extension stroke, respectively. FIG. 6 is a damping force characteristic diagram, and FIG.
The figure is a temperature characteristic diagram of damping force. In the drawings, 1 is a hydraulic shock absorber, 2 is a cylinder, 3 is a hollow piston rod, 4 is a piston, 5 is a case member, 6 is a fixing member, 7 is a bushing rod, 18 is an adjustment dial, 19
is a valve seat, 19a is an oil hole, 20 is a select valve, 2Qa, 2Qb. 20C, 20d are orifices, 21 are springs, 22
is a check valve, Sl is an upper working chamber, S2 is a lower working chamber, S3 is a space, and ΔS is a gap. Figure 4--N\shini∆

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シリンダ内に摺動自在に嵌装されたピストンを一端に支
持する中空ピストンロフドの内部にブツシュロッドを回
動自在に挿通し、該ブツシュロッド端部に複数の異径オ
リフィスを穿設して成るセレクトバルブを一体に回動ず
べく係合するとともに、該セレクトバルブの一端面側に
該バルブの前記異径オリフィスの−に適合すべき油孔を
穿設して成るバルブシートを設けて構成される油圧緩衝
器の減衰力調整機構において、前記セレクトバルブの他
端面側に該バルブの異径オリフィスを閉塞すべくスプリ
ングで付勢されたチェックバルブを設けたことを特徴と
する油圧緩衝器の減衰力調整機構。A select valve is provided in which a bushing rod is rotatably inserted into a hollow piston rod that supports a piston slidably fitted in a cylinder at one end, and a plurality of orifices of different diameters are bored in the end of the bushing rod. A hydraulic shock absorber configured by providing a valve seat that engages without rotating integrally with the select valve and has an oil hole formed on one end side of the select valve to match the − of the different diameter orifice of the valve. A damping force adjusting mechanism for a hydraulic shock absorber, characterized in that a check valve biased by a spring is provided on the other end side of the select valve to close off a different diameter orifice of the valve. .