JPH0359537U

JPH0359537U -

Info

Publication number: JPH0359537U
Application number: JP12074389U
Authority: JP
Priority date: 1989-10-16
Filing date: 1989-10-16
Publication date: 1991-06-12

Description

[Brief explanation of the drawing]

第１図は開閉部材とスプリングシート部の拡大
断面図、第２図は本考案の実施の一例に係るダン
パー内蔵式フロントフオークの一部縦断正面図、
第３図、第４図はピストン部の拡大断面図、本考
案に係る減衰力特性を示すグラフ、第５図は従来
のフロントフオークの一部縦断正面図である。符号の説明、１……車輪側チユーブたるアウタ
ーチユーブ、２……車体側チユーブたるインナー
チユーブ、３……ダンパーシリンダ、４……ピス
トンロツド、６……スプリングシート、１０……
通孔、１１，２７……シート、１３……油留部、
１４……圧力室、１８……開閉部材、２１……懸
架スプリング、２２……検知スプリング、２３，
２３′……チエツク弁、２４，２４′……リーフ
バルブ。 FIG. 1 is an enlarged cross-sectional view of the opening/closing member and the spring seat part, and FIG. 2 is a partially vertical front view of a front fork with a built-in damper according to an example of the implementation of the present invention.
FIGS. 3 and 4 are enlarged sectional views of the piston portion, graphs showing damping force characteristics according to the present invention, and FIG. 5 is a partially longitudinal sectional front view of a conventional front fork. Explanation of the symbols: 1... Outer tube as wheel side tube, 2... Inner tube as vehicle body side tube, 3... Damper cylinder, 4... Piston rod, 6... Spring seat, 10...
Through hole, 11, 27... sheet, 13... oil sump,
14... Pressure chamber, 18... Opening/closing member, 21... Suspension spring, 22... Detection spring, 23,
23'...Check valve, 24,24'...Leaf valve.

Claims

[Scope of utility model registration request]

The vehicle body side tube and the wheel side tube are slidably fitted together, the damper cylinder is erected at the center of the inside of the wheel side tube, and the piston rod, which is slidably inserted into the damper cylinder via the piston, is inserted into the vehicle body side tube. A spring seat is erected at the top of the damper cylinder, and the spring seat partitions an upper oil reservoir chamber and a lower pressure chamber in the tube on the vehicle body side, and communicates with the oil reservoir chamber and pressure through a hole bored in the body. In the front fork with the chamber open, a through-hole opening/closing member is inserted inside the spring seat so as to be able to slide up and down, a suspension spring is interposed between the opening/closing member and the tube on the vehicle body side, and the upper part of the opening/closing member is also inserted. A front fork with a built-in damper is characterized in that a detection spring is interposed between a seat provided at the bottom of the spring seat and a seat provided at the bottom of the spring seat, and a check valve and a leaf valve are further provided on the outer periphery of the spring seat.