JPH0178747U

JPH0178747U -

Info

Publication number: JPH0178747U
Application number: JP1987175465U
Authority: JP
Priority date: 1987-11-17
Filing date: 1987-11-17
Publication date: 1989-05-26

Description

[Brief explanation of the drawing]

第１図イ，ロは本考案の一実施例を示す要部断
面図およびオリフイス部材斜視図、第２図イ，ロ
はそれぞれ本考案の機能を説明する説明図、第３
図は本考案による減衰力特性の一例を示す図、第
４図および第５図は従来のものを示す図で、第４
図はエアサスペンシヨンの一例を示す要部断面図
、第５図イ，ロはメータリングピンを用いた変位
感応型減衰力可変ダンパの作動態様をそれぞれ示
す要部断面図である。１……シリンダ、２……ピストンロツド、３…
…ダンパ、６……メータリングピン、７……円筒
部材、７１……スリツト、８……オリフイス部材
、８１……オリフイス。 Figures 1A and 2B are a sectional view of essential parts and a perspective view of an orifice member showing an embodiment of the present invention, Figures 2A and 2B are explanatory diagrams illustrating the functions of the present invention, and Figure 3
The figure shows an example of damping force characteristics according to the present invention, and Figs. 4 and 5 show conventional damping force characteristics.
The figure is a cross-sectional view of a main part showing an example of an air suspension, and FIGS. 1...Cylinder, 2...Piston rod, 3...
...damper, 6...metering pin, 7...cylindrical member, 71...slit, 8...orifice member, 81...orifice.

Claims

[Scope of utility model registration request]

A damper consisting of a cylinder and a piston rod having a piston with a valve mechanism.The piston rod has a communication hole that communicates the upper and lower oil chambers of the cylinder divided by the piston, and a metering pin that fits loosely into the communication hole. In a displacement-sensitive variable damping force damper using a metering pin, the metering pin is fixed to the bottom of the cylinder, and an orifice member having an orifice through which the metering pin passes is attached to the lower end of the piston rod. A cylindrical member provided with a slit having a length in the axial direction is interposed between the inner peripheral surface of the communicating hole and the outer peripheral part of the metering pin, and is attached to the piston rod so as to be fixed in the axial direction but rotatable. The orifice end face of the orifice member has a structure in which the thickness of the orifice end face gradually changes in the circumferential direction. The oil in the chamber is configured to circulate,
A variable damping force structure for a damper, characterized in that by rotating the cylindrical member, the thickness of the end face of the orifice facing the slit changes, thereby changing the oil flow resistance.