JPS62127091U

JPS62127091U -

Info

Publication number: JPS62127091U
Application number: JP1520886U
Authority: JP
Priority date: 1986-02-05
Filing date: 1986-02-05
Publication date: 1987-08-12

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の縦断面図、第２図
は本考案の他の実施例の要部縦断面図である。１……フロントフオーク、２……アウターチユ
ーブ、３……インナーチユーブ、７……ピストン
ロツド、９……ピストン支持部材、１３……ピス
トン、１８，１９……減衰弁、２１……ガイド部
材、２２Ａ，２２Ｂ……ポート、２５……作動油
通路、２８……リリーフ弁、３０……リリーフス
プリング、３１……スプリングシート、３３……
懸架スプリング、３４……検出スプリング、４７
……調整ロツド、５０……リリーフ弁シート、５
１……逆止弁部、５２……シートスプリング、Ａ
，Ｂ，Ｃ……油室。 FIG. 1 is a longitudinal cross-sectional view of one embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a main part of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Front fork, 2... Outer tube, 3... Inner tube, 7... Piston rod, 9... Piston support member, 13... Piston, 18, 19... Damping valve, 21... Guide member, 22A , 22B... Port, 25... Hydraulic oil passage, 28... Relief valve, 30... Relief spring, 31... Spring seat, 33...
Suspension spring, 34...Detection spring, 47
...Adjustment rod, 50 ...Relief valve seat, 5
1...Check valve part, 52...Seat spring, A
,B,C...oil room.

Claims

[Scope of utility model registration request]

An outer tube is supported by the vehicle body via a steering bracket, an inner tube is slidably fitted into the outer tube from below, a piston slides within the inner tube to generate damping force, and the piston is connected to the outer tube. In an inverted front fork having a piston rod that supports the tube from above and a suspension spring that elastically supports the inner tube toward the outer tube, an upper oil chamber above the piston and a lower oil chamber below the piston are communicated with each other. a detection spring that penetrates the piston rod and the piston to form a hydraulic oil passage that allows a portion of the hydraulic oil to flow between the two oil chambers, and that is connected in series with the suspension spring by sandwiching a spring seat; A variable throttle mechanism that reduces the opening area of the hydraulic oil passage in conjunction with the displacement of the spring seat during compression, and a variable throttle mechanism that is located in the middle of the hydraulic oil passage and opens elastically based on the pressure difference between the upstream and downstream passages. an inverted front fork, characterized in that the relief valve is provided with a spring seat as a support member for the relief spring and has a characteristic that the valve opening pressure increases based on the upward movement of the spring seat during compression operation. .