JPH0248483U

JPH0248483U -

Info

Publication number: JPH0248483U
Application number: JP12656188U
Authority: JP
Priority date: 1988-09-28
Filing date: 1988-09-28
Publication date: 1990-04-04

Description

[Brief explanation of drawings]

第１図は本考案に従つた電動パワーステアリン
グ装置の一実施例の概略構成図、第２図は第１図
に示す実施例の詳細を示す縦断面図、第３図は第
２図におけるＡ−Ａ断面図である。１０……ステアリングホイール、１１……入力
軸、１１ｅ……長孔、１１ｄ……らせん状溝、１
１ｆ……貫通孔、１２……出力軸、１２ｂ……６
角部、１３……トーシヨンバー、１８……スライ
ダ、１８ｃ……軸方向の長孔、１９……ボール、
２１……ピン、２２……コロ、２３……アウター
スリーブ、２３ａ……はすば歯車（平歯車）、２
４……電動モータ、２７……ボール、２８……レ
バー、２９……制御回路、３３……弾性部材。 FIG. 1 is a schematic configuration diagram of an embodiment of an electric power steering device according to the present invention, FIG. 2 is a vertical cross-sectional view showing details of the embodiment shown in FIG. 1, and FIG. 3 is an A in FIG. -A sectional view. 10... Steering wheel, 11... Input shaft, 11e... Elongated hole, 11d... Spiral groove, 1
1f...through hole, 12...output shaft, 12b...6
Corner, 13...Torsion bar, 18...Slider, 18c...Elongated hole in the axial direction, 19...Ball,
21... Pin, 22... Roller, 23... Outer sleeve, 23a... Helical gear (spur gear), 2
4...Electric motor, 27...Ball, 28...Lever, 29...Control circuit, 33...Elastic member.

Claims

[Scope of utility model registration request]

A steering torque detector that detects a steering torque applied between an input shaft connected to a steering wheel of a vehicle and an output shaft connected to a steering gear, and a control means responsive to a detection signal from the steering torque detector. an electric motor whose rotation is controlled by a control signal and whose rotation is transmitted to the output shaft;
An electric power steering device comprising a clutch interposed between the electric motor and the output shaft for controlling transmission of rotation of the electric motor to the output shaft on and off, wherein the input shaft is formed in a cylindrical shape. The two shafts are connected via an elastic body, the steering torque detector detects the steering torque according to the elastic deformation of the elastic body, and a plurality of through holes are formed at the end of the input shaft. At the same time, a multifaceted portion is formed on the outer peripheral surface of the output shaft, and the output shaft is loosely fitted to the end of the input shaft such that the multifaceted portion and the through hole overlap with each other, and the clutch is inserted into the input shaft. a cylindrical outer ring that is arranged concentrically with the output shaft with a gap left between it and the input shaft, and has a helical gear or a spur gear carved on its outer periphery, and uses the gear to reduce the rotation of the electric motor; and a cylindrical outer ring that is disposed within the through hole and that engages with the inner circumferential surface of the cylindrical outer ring and each of the multifaceted parts in response to rotation of the input shaft to connect the cylindrical outer ring and the output shaft. an engagement member;
an elastic member disposed within the through hole and biasing the engaging member toward one end surface in the circumferential direction of the through hole, and the clutch is connected to the output shaft and the electric motor by elastic deformation of the elastic body. An electric power steering device characterized by controlling intermittent operation.