JPS5932591U

JPS5932591U - Front fork damping force adjustment device

Info

Publication number: JPS5932591U
Application number: JP12902782U
Authority: JP
Inventors: 敏文山本
Original assignee: 株式会社昭和製作所
Priority date: 1982-08-26
Filing date: 1982-08-26
Publication date: 1984-02-29
Also published as: JPS6332797Y2

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 the drawing]

第１図は本考案装置を実施したフロントフォークの縦断
面図、第２図は本考案の要部拡大縦断面図、第３図は第
２図の■−■線断面図、第４図は本考案装置による圧縮
行程の減衰力曲線図である。１・・・外筒、２・・・内筒、３・・・フォークボルト
、５・・・中空ロッド、１０・・・アジャストケース、
１１・・・アジャストロッド、１２・・・油路、１５・
・・ニードル部、１６・・・貫通孔、１７・・・弾性部
材、１８・・・ボール、１９・・・長溝、Ａ・・・外筒
油室、Ｂ・・・内筒油室。Fig. 1 is a longitudinal sectional view of a front fork implementing the device of the present invention, Fig. 2 is an enlarged longitudinal sectional view of the main parts of the invention, Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2, and Fig. 4 is FIG. 3 is a damping force curve diagram of the compression stroke by the device of the present invention. 1... Outer cylinder, 2... Inner cylinder, 3... Fork bolt, 5... Hollow rod, 10... Adjustment case,
11... Adjustment rod, 12... Oil path, 15.
...Needle portion, 16...Through hole, 17...Elastic member, 18...Ball, 19...Long groove, A...Outer cylinder oil chamber, B...Inner cylinder oil chamber.

Claims

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

（１）外筒に内筒を摺動自在に嵌合し、内筒上部を閉塞
するフォークボルトに、先端にピストンを有する中空ロ
ッドを固着し、該中空ロッドを外筒底部に植設したシー
トパイプ内に嵌入したフロントフォークにおいて、中空
ロッド５に内筒油室Ｂに連通する油孔９を形成し、中空
内部に段部を有し且つ段部後方に前記中空ロッド５の油
孔９に連通する油孔１３を有するアジャストケース１０
を中空ロッド５の基端内部に固着し、先端に前記アジャ
ストケース１０の段部に対向する先細ニードル部１５を
形成したアジャストロッド１１をアジャストケース１０
内に軸移動自在に挿入螺合したことを特徴とするフロン
トフォークの減衰力調節装置。(1) A sheet in which an inner cylinder is slidably fitted into an outer cylinder, a hollow rod with a piston at the tip is fixed to a fork bolt that closes the upper part of the inner cylinder, and the hollow rod is implanted at the bottom of the outer cylinder. In the front fork fitted into the pipe, an oil hole 9 communicating with the inner cylinder oil chamber B is formed in the hollow rod 5, and a step is provided inside the hollow, and a hole 9 is connected to the oil hole 9 of the hollow rod 5 at the rear of the step. Adjustment case 10 having communicating oil holes 13
is fixed to the inside of the base end of the hollow rod 5, and the adjusting rod 11 having a tapered needle portion 15 formed at the tip facing the stepped portion of the adjusting case 10 is attached to the adjusting case 10.
A damping force adjustment device for a front fork, characterized in that the damping force adjustment device is inserted and screwed into the interior of the fork so that the shaft can move freely.

（２）アジャストロッド１１の軸体横断方向に貫通孔１
６を形成し、該貫通孔１６内に弾性部材１７を介して対
向配置させた一対のボール１８゜１８を嵌装するととも
に、アジャストケース１１の内周面に軸方向に延びる複
数の長溝１９を形成し、前記ボール１８の背面を長溝１
９に係合させたことを特徴とする実用新案登録請求の範
囲第１項記載の減衰力調節装置。(2) Through hole 1 in the transverse direction of the shaft of the adjustment rod 11
A pair of balls 18 18 are fitted into the through hole 16 with an elastic member 17 interposed therebetween. The back surface of the ball 18 is formed with a long groove 1.
9. The damping force adjusting device according to claim 1, wherein the damping force adjusting device is engaged with the damping force adjusting device according to claim 1.