JPS6211071U

JPS6211071U -

Info

Publication number: JPS6211071U
Application number: JP10370085U
Authority: JP
Priority date: 1985-07-08
Filing date: 1985-07-08
Publication date: 1987-01-23

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案による動力舵取装置の
第１実施例を示し、第１図は長手方向断面図、第
２図は第１図の―断面図、第３図は、第２図
の―断面図、第４図は第２実施例の第１実施
例との相違部分を示す長手方向断面図、第５図は
先願の技術の主要部の長手方向断面図である。符号の説明、１１……弁ハウジング、１２……
入力軸、１３……出力軸、２０……サーボ弁、１
７……パワシリンダ、３０，３０Ａ……反力機構
、３１……反力室、３２，３２Ａ……反力ピスト
ン、３５，３５Ａ……反力受部、３３，３６Ａ…
…係合突起、３６，３６Ａ……凹部、３６ａ……
カム面。 1 to 3 show a first embodiment of the power steering device according to the present invention, FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. FIG. 4 is a longitudinal sectional view showing the difference between the second embodiment and the first embodiment, and FIG. 5 is a longitudinal sectional view of the main part of the technology of the prior application. Explanation of symbols, 11... Valve housing, 12...
Input shaft, 13... Output shaft, 20... Servo valve, 1
7...Power cylinder, 30, 30A...Reaction force mechanism, 31...Reaction force chamber, 32, 32A...Reaction force piston, 35, 35A...Reaction force receiver, 33, 36A...
...Engaging protrusion, 36, 36A...Recess, 36a...
cam surface.

Claims

[Scope of utility model registration request]

A valve housing, an input shaft rotatably supported by the valve housing, an output end rotatably connected to the input shaft, and the valve is actuated based on the relative rotation of the input shaft and the output shaft. A servo valve that controls the supply and discharge of working fluid to the power cylinder that applies an assist force to the output shaft, and a reaction force that changes the assist force by changing the torsion spring characteristics between the two shafts depending on the vehicle running condition. In the power steering device including the reaction force mechanism, the reaction force mechanism includes a reaction force chamber formed concentrically with respect to the input shaft and the output shaft, and the reaction force mechanism fitted into the reaction force chamber so as to be slidable in the axial direction. A reaction piston connected to one of the input shaft and the output shaft in a relatively unrotatable manner, and a reaction force receiver integrally provided on the other of the input shaft and the output shaft, facing the reaction piston. and,
a plurality of engagement protrusions that are integrally molded on either one of the reaction force piston and the reaction force receiver and protrude in the axial direction; and a plurality of engagement protrusions that are formed on the other of the reaction force piston and the reaction force receiver. a plurality of recesses each having a cam surface inclined on both sides in the circumferential direction that engages with the tip of the engagement protrusion; A power steering device characterized in that the power steering device is configured to apply the reaction force to the reaction force piston.