JPH0215576U

JPH0215576U -

Info

Publication number: JPH0215576U
Application number: JP9430688U
Authority: JP
Priority date: 1988-07-16
Filing date: 1988-07-16
Publication date: 1990-01-31

Description

[Brief explanation of the drawing]

第１図は本考案の実施例による電動式パワース
テアリングの全体的な縦断面図、第２図は第１図
のＢ―Ｂ線に沿つた概略的な横断面図、第３図は
本考案の他の実施例の部分的な拡大縦断面図であ
る。１……電動機、２……電動機出力軸、４……第
１の小歯車、５……第１の大歯車、６……中間軸
、７……第２の小歯車、８……第２の大歯車、９
……ピニオン軸（操舵出力軸）、９ａ……フラン
ジ部、２２……リングワイヤ、２６……ナツト、
２７……皿バネ、２８，２９……摩擦板。 Fig. 1 is an overall vertical cross-sectional view of an electric power steering according to an embodiment of the present invention, Fig. 2 is a schematic cross-sectional view taken along the line B-B in Fig. 1, and Fig. 3 is a cross-sectional view of the electric power steering according to the present invention. FIG. 6 is a partially enlarged longitudinal cross-sectional view of another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Electric motor, 2... Motor output shaft, 4... First small gear, 5... First large gear, 6... Intermediate shaft, 7... Second small gear, 8... Second big gear, 9
... Pinion shaft (steering output shaft), 9a ... Flange section, 22 ... Ring wire, 26 ... Nut,
27... Disc spring, 28, 29... Friction plate.

Claims

[Claims for Utility Model Registration] (1) In an electric power steering system that detects load torque generated during steering and drives an electric motor according to the load torque to apply steering assist force to a steering output shaft, the electric motor An electric power steering system, comprising: a mechanical torque transmission device that idles relative to the steering output shaft when a load of a certain torque or more is applied between the steering output shaft and the steering output shaft. (2) The electric power steering according to claim 1, wherein the torque transmission device has a sliding contact portion that acts on a load of the constant torque or more.