JPH0475779U

JPH0475779U -

Info

Publication number: JPH0475779U
Application number: JP11895590U
Authority: JP
Priority date: 1990-11-14
Filing date: 1990-11-14
Publication date: 1992-07-02

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係るラツクピニオ
ン式パワーステアリングの要部の縦断面図、第２
図は第１図の−線に沿う断面図、第３図は第
２の実施例の要部縦断面図、第４図は第３の実施
例の要部縦断面図、第５図はその横断面図である
。２……スタブシヤフト、２ａ……スタブシヤフ
トの内部空間、２ｄ……バルブロータ、２ｅ……
貫通穴、４……ピニオンシヤフト、１０……バル
ブスリーブ、１４……ロータリバルブ、１８……
筒体、１８ａ……筒体の円孔。 FIG. 1 is a vertical cross-sectional view of the main parts of a rack and pinion power steering system according to an embodiment of the present invention, and FIG.
The figure is a sectional view taken along the - line in Fig. 1, Fig. 3 is a longitudinal sectional view of the main part of the second embodiment, Fig. 4 is a longitudinal sectional view of the main part of the third embodiment, and Fig. 5 is a longitudinal sectional view of the main part of the second embodiment. FIG. 2...Stub shaft, 2a...Inner space of stub shaft, 2d...Valve rotor, 2e...
Through hole, 4... Pinion shaft, 10... Valve sleeve, 14... Rotary valve, 18...
Cylindrical body, 18a... circular hole in the cylinder.

Claims

[Scope of utility model registration request]

A stub shaft that is rotated by the operation of a steering handle, a pinion shaft that is arranged on the same axis as the stub shaft and capable of relative rotation at a predetermined angle, a valve rotor provided on the stub shaft, and a pinion shaft that is fitted to the valve rotor. and a rotary valve consisting of a valve sleeve that is connected to the pinion shaft and rotates as a unit, and the return oil from the rotary valve is returned to the tank through a through hole that communicates the inner space and the outer surface of the stub shaft. In the rack and pinion power steering system, a cylindrical body that rotates integrally with the pinion shaft is fitted onto the outer periphery of the stub shaft, and
The cylindrical body is provided with a circular hole that is concentric with the through hole at the neutral position of the rotary valve, thereby changing the opening area of the return flow path from the internal space of the stub shaft to the tank during operation. Rack pinion power steering.