JPS5935292U

JPS5935292U - Front fork damping force generation mechanism

Info

Publication number: JPS5935292U
Application number: JP13137282U
Authority: JP
Inventors: 大間　俊郎
Original assignee: 株式会社昭和製作所
Priority date: 1982-08-31
Filing date: 1982-08-31
Publication date: 1984-03-05
Also published as: JPS6316630Y2

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

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は本考案に
係る機構を有して成るフロントフォークの縦断側面図、
第２図及び第３図は同フロントフォーク要部の拡大破断
側面図、第４図及び第５図は夫々変更実施例に係る第２
図、第３図と同様の図、第６図は減衰力特性線図である
。尚図面中２は外筒、３，１０３は内筒、４はシートパイ
プ、７は逆止弁、１０，１１，１７゜１８．１１７，１
１８は油孔、１３は係止部材、１４はオイルロックカラ
ー、１５は可動弁座、１６．１１６はスプリング、１１
５は摺動部材、Ｓ□、Ｓ′１はシートパイプ内室、Ｓ２
．Ｓ’２はシートパイプ外室、Ｓ３．Ｓ’３は油溜室で
ある。The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view of a front fork having a mechanism according to the present invention;
FIGS. 2 and 3 are enlarged cutaway side views of the main parts of the front fork, and FIGS.
FIG. 6, a diagram similar to FIG. 3, and FIG. 6 are damping force characteristic diagrams. In the drawing, 2 is an outer cylinder, 3, 103 is an inner cylinder, 4 is a seat pipe, 7 is a check valve, 10, 11, 17° 18. 117, 1
18 is an oil hole, 13 is a locking member, 14 is an oil lock collar, 15 is a movable valve seat, 16.116 is a spring, 11
5 is a sliding member, S□, S'1 is the seat pipe inner chamber, S2
．． S'2 is the seat pipe outer room, S3. S'3 is an oil storage chamber.

Claims

[Scope of utility model registration request]

(1) The inner cylinder and the outer cylinder are slidably fitted together, and a check valve and oil lock collar that close in extension stroke are fitted in series on the inner periphery of the lower end of the inner cylinder, and are implanted at the bottom of the outer cylinder. This is a mechanism installed in the front fork that consists of the expanded diameter part of the seat pipe slidingly touching the inner periphery of the inner cylinder, and the seat pipe contracts during the extension stroke of the front fork when the oil pressure in the outer oil chamber exceeds a certain level. A damping force generation mechanism for a front fork, characterized in that the oil lock collar is provided with an oil passage that opens by bypassing the check valve.

(2) The detour of the oil lock collar includes an oil sump chamber provided on the outer periphery of the oil lock collar, and two oil holes that communicate the oil sump chamber with an oil chamber below the check valve in the inner cylinder. Claim 1 of the above-mentioned utility model registration, characterized in that the upper oil hole of these oil holes is constituted by a movable valve seat that opens when the oil pressure above the check valve in the inner cylinder exceeds a certain level. The front fork damping force generation mechanism described.

(3) The detour of the oil lock collar includes an oil sump chamber provided on the outer periphery of the oil lock collar, and two oil holes that communicate the oil sump chamber with an oil chamber on the lower side of the check valve in the inner cylinder; a sliding member that is slidably fitted into the oil reservoir chamber and opens the upper oil hole of the two oil holes when the oil pressure in the oil chamber above the check valve in the inner cylinder reaches a certain level; The damping force generating mechanism according to claim 1, characterized in that the damping force generating mechanism is comprised of: