JPS6266895U

JPS6266895U -

Info

Publication number: JPS6266895U
Application number: JP15912285U
Authority: JP
Priority date: 1985-10-17
Filing date: 1985-10-17
Publication date: 1987-04-25

Description

【図面の簡単な説明】第１図は本考案の一実施例に係るフロントフオ
ークの縦断正面図、第２図、第３図は他の実施例
に係るフロントフオークの一部拡大断面図である
。１……アウターチユーブ、２……インナーチユ
ーブ、３……ダンパーシリンダ、４……ピストン
ロツド、１６ａ，１６ｂ……油室、２４，２４ａ
，２５ａ……密封部材、２５，３６，３８……弁
体、２６……操作ロツド、２７……油孔。[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a longitudinal sectional front view of a front fork according to one embodiment of the present invention, and FIGS. 2 and 3 are partially enlarged sectional views of front forks according to other embodiments. . 1... Outer tube, 2... Inner tube, 3... Damper cylinder, 4... Piston rod, 16a, 16b... Oil chamber, 24, 24a
, 25a... Sealing member, 25, 36, 38... Valve body, 26... Operation rod, 27... Oil hole.

Claims

[Scope of Claim for Utility Model Registration] (1) An inner tube is slidably inserted into an outer tube, a damper cylinder is erected at the inner lower end of the outer tube, and a piston rod is slid into the damper cylinder via a piston portion. In a front fork with a built-in damper, which can be freely inserted and the base end of the piston rod is connected to the inner tube, an oil hole is formed in the piston part to allow the two oil chambers divided by the piston part to communicate with each other. A valve body is movably provided in the middle, the other piston rod is formed hollow and the end is sealed with a movable sealing member, and an operating rod driven from the outside is movably inserted into the piston rod. A front fork damping force adjustment device with a built-in damper whose motion is transmitted to the valve body via a sealing member. (2) The damping force adjusting device for a front fork with a built-in damper as set forth in claim 1 of the registered utility model, wherein the valve body is a needle valve. (3) The damping force adjusting device for a front fork with a built-in damper as set forth in claim 1 of the registered utility model, wherein the valve body is a poppet valve. (4) The damping force adjusting device for a front fork with a built-in damper according to claim 1 of the registered utility model, wherein the valve body is a cylindrical body. (5) The damping force adjusting device for a front fork with a built-in damper as set forth in claim 1 of the registered utility model, wherein the valve body is a rotary valve. (6) The damping force adjusting device for a front fork with a built-in damper according to claim 1, wherein the base end of the needle valve also serves as a sealing member. (7) The damping force adjustment device for a front fork with a built-in damper as set forth in claim 1 of the utility model registration claim, in which the operating rod and the valve body move in the axial direction or rotational direction. (8) The damping force adjusting device for a front fork with a built-in damper according to claim 1, wherein the operating rod is formed into a cylindrical shape or an irregular cross-sectional shape. (9) The damping force adjustment device for a front fork with a built-in damper as claimed in claim 1, wherein a buckling prevention member is interposed between the outer circumference of the operating rod and the inner circumference of the piston rod.