JPH02100973U

JPH02100973U -

Info

Publication number: JPH02100973U
Application number: JP1043789U
Authority: JP
Priority date: 1989-01-31
Filing date: 1989-01-31
Publication date: 1990-08-10
Anticipated expiration: 2004-01-31
Also published as: JPH0751973Y2

Description

[Brief explanation of the drawing]

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、第４ａ図及び第４ｂ
図は第２図に示す自転規制手段の説明図、第５図
、第６ａ図、第６ｂ図及び第７図は本考案におけ
る自転規制手段の変形例を示す説明図である。１０……ステアリングホイール、１１……入力
軸、１１ｄ……らせん状溝、１１ｄ……長孔、１
１ｆ……貫通孔、１２……出力軸、１２ｂ……六
角部、１２ｃ……環状溝、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、２４……電動モー
タ、２７……ボール、２８……レバー、２９……
制御回路、３３……付勢部材、３６……リング部
材（弾性部材）、４０……弾性部材、５０……弾
性部材、６０……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, Figure 4a and Figure 4b
The figure is an explanatory diagram of the rotation regulating means shown in FIG. 2, and FIGS. 5, 6a, 6b, and 7 are explanatory diagrams showing modifications of the rotation regulating means in the present invention. 10... Steering wheel, 11... Input shaft, 11d... Spiral groove, 11d... Long hole, 1
1f...Through hole, 12...Output shaft, 12b...Hexagonal part, 12c...Annular groove, 13...Torsion bar, 18...Slider, 18c...Elongated hole in the axial direction, 19...Ball, 21... ... Pin, 22 ... Roller, 23 ... Outer sleeve, 24 ... Electric motor, 27 ... Ball, 28 ... Lever, 29 ...
Control circuit, 33... urging member, 36... ring member (elastic member), 40... elastic member, 50... elastic member, 60... elastic member.

Claims

[Scope of Claim for Utility Model Registration] (1) A steering torque detector that detects the 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 the detection of the steering torque. an electric motor whose rotation is controlled by a control signal from a control means in response to a detection signal from the device, and whose rotation is transmitted to the output shaft; and an electric motor interposed between the electric motor and the output shaft. In the electric power steering device, the input shaft is formed into a cylindrical shape and the two shafts are connected via an elastic body, and the steering torque detector The steering torque is detected according to the elastic deformation of the elastic body, and a plurality of through holes are formed at the end of the input shaft, and a multifaceted portion is formed on the outer peripheral surface of the output shaft to detect the steering torque. The output shaft is loosely fitted to the end of the input shaft so that the surface portion and the through hole overlap each other, and the clutch is placed concentrically with the input/output shaft, leaving a space between the clutch and the input shaft. a cylindrical outer ring disposed in the through hole and to which the rotation of the electric motor is transmitted; and an inner circumferential surface of the cylindrical outer ring and the multifaceted portion, respectively, arranged in the through hole and responsive to rotation of the input shaft. an engaging member that can engage with and connect the cylindrical outer ring and the output shaft; and an engaging member that is disposed within the through hole and urges the engaging member to one end surface of the through hole on the rotational direction side of the input shaft. the clutch controls the connection and disconnection of the output shaft and the electric motor by elastic deformation of the elastic body, and the cylindrical outer ring is activated when the engagement member of the clutch is engaged. An electric power steering device comprising: a rotation regulating means for regulating rotation of the engaging member due to rotation. (2) The electric power steering device according to claim 1, wherein the rotation regulating means comprises an elastic member fitted into an annular groove formed on the outer circumferential surface of the multifaceted portion of the output shaft. (3) The rotation regulating means is comprised of an elastic member fixed to the end surface of the through hole on the rotational direction side of the input shaft or the end of the urging means on the engaging member side. The electric power steering device described in 1).