JPS6189537U - - Google Patents

Description

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

第１図は、本考案に係るシール部構造を示す油
圧ダンパーのシリンダ上部の破断面図、第２図は
同シール部構造の作用説明図、第３図乃至第６図
は本考案の変更実施例を示すシール部構造の破断
面図、第７図は、従来のシール部構造を示す第１
図と同様の図である。 尚、図面中、１は内筒、２は外筒、３はシリン
ダ、４はピストンロツド、５はロツドガイド、８
はリターン孔、１０，１１０，２１０，３１０，
４１０はチエツクシール、Ｓ_１は内筒内油室、Ｓ
_２はリザーバ室である。 Fig. 1 is a broken cross-sectional view of the upper part of the cylinder of a hydraulic damper showing the seal structure according to the present invention, Fig. 2 is an explanatory diagram of the operation of the same seal structure, and Figs. 3 to 6 are modifications of the present invention. FIG. 7 is a broken cross-sectional view of a seal structure showing an example, and FIG.
FIG. In the drawings, 1 is an inner cylinder, 2 is an outer cylinder, 3 is a cylinder, 4 is a piston rod, 5 is a rod guide, and 8
are return holes, 10, 110, 210, 310,
410 is a check seal, _S1 is an oil chamber in the inner cylinder, S
₂ is a reservoir chamber.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内・外筒で二重円筒構造を成すシリンダの開口
端部内周に嵌装されたロツドガイドに、内周内油
室とリザーバ室とを両通するリターン孔を穿設し
、該リターン孔を内筒外周に嵌着され、チエツク
弁機能とシール機能を併有するチエツクシールに
て閉塞して構成されることを特徴とする油圧ダン
パーのシール部構造。 A return hole that passes both the inner oil chamber and the reservoir chamber is bored in the rod guide fitted on the inner periphery of the open end of the cylinder, which has a double cylindrical structure with an inner and outer cylinder. A seal part structure of a hydraulic damper, characterized in that it is closed by a check seal that is fitted onto the outer periphery of a cylinder and has both a check valve function and a seal function.