JPS63142264U

JPS63142264U -

Info

Publication number: JPS63142264U
Application number: JP3512387U
Authority: JP
Priority date: 1987-03-12
Filing date: 1987-03-12
Publication date: 1988-09-20

Description

[Brief explanation of drawings]

第１図は本考案による電動式動力かじ取装置の
一実施例の内部構造を表す断面図、第２図はその
従動歯車の外観を表す斜視図、第３図は第１図中
の―矢視断面図、第４図はそのスプールの外
観を表す斜視図、第５図は従来の電動式動力かじ
取装置の一例の構造を表す断面図、第６図はその
―矢視断面図である。又、図中の符号で１１は上カバー、１３は入力
軸、１３ａは係合溝、１４はかじ取歯車軸、１６
，１９はアンギユラ軸受、１７はハウジング、１
８はピニオンケース、２６，３０はスプライン、
２７はかじ取ハンドル軸、２８，４８はピン、２
９はねじり棒ばね、３１は従動歯車、３１ａは筒
部、３３は電動機、３４は電磁クラツチ、３５は
駆動歯車、３６，３７は減速歯車、３８はかじ取
歯車、３９はタイロツド、４０はラツク、４２は
スライダ、４２ａ，４６ａは環状溝、４３は駆動
ピン、４４は揺動軸、４５は検出レバー、４６は
スプール、４６ｂ，４６ｃは切欠、４７は変位検
出器、４９は圧縮コイルばね、５０は相対回転拘
束部である。 FIG. 1 is a cross-sectional view showing the internal structure of an embodiment of the electric power steering device according to the present invention, FIG. 2 is a perspective view showing the external appearance of the driven gear, and FIG. 4 is a perspective view showing the appearance of the spool, FIG. 5 is a sectional view showing the structure of an example of a conventional electric power steering device, and FIG. 6 is a sectional view taken in the direction of the - arrow. . Also, in the figure, 11 is the upper cover, 13 is the input shaft, 13a is the engagement groove, 14 is the steering gear shaft, and 16
, 19 is an angular bearing, 17 is a housing, 1
8 is the pinion case, 26 and 30 are the splines,
27 is the steering handle shaft, 28 and 48 are pins, 2
9 is a torsion rod spring, 31 is a driven gear, 31a is a cylindrical portion, 33 is an electric motor, 34 is an electromagnetic clutch, 35 is a driving gear, 36 and 37 are reduction gears, 38 is a steering gear, 39 is a tie rod, and 40 is a rack. , 42 is a slider, 42a, 46a are annular grooves, 43 is a drive pin, 44 is a swing shaft, 45 is a detection lever, 46 is a spool, 46b, 46c are notches, 47 is a displacement detector, 49 is a compression coil spring, 50 is a relative rotation restraining portion.

Claims

[Scope of utility model registration request]

A cylindrical input shaft has a steering wheel shaft connected to one end and a steering gear shaft rotatably fitted to the other end, and a cylindrical input shaft is provided coaxially in the center of the input shaft. and a torsion rod spring having one end fixed to the input shaft and the other end fixed to the steering gear shaft, and a driven member coaxially provided with the steering gear shaft so as to surround the input shaft. A gear, a cylindrical slider fitted to a cylindrical portion of the driven gear so as to be relatively rotatable and slidable along the longitudinal direction of the cylindrical portion; a drive pin that slidably passes through a helical twist slot formed in the cylindrical portion of the driven gear and whose tip end tightly engages with an engagement groove formed on the outer circumferential surface of the input shaft; a torque sensor coupled to a slider and configured to detect longitudinal movement of the slider integral with the drive pin that moves along the helical slot due to relative rotation of the steering wheel shaft with respect to the steering gear shaft; an electric motor having a drive gear connected to the steering gear shaft and capable of transmitting a driving force to the steering gear shaft and operated based on a detection signal from the torque sensor; and a clearance provided between the input shaft and the steering gear shaft. An electric power steering device comprising a relative rotation restraining portion that is provided with the input shaft and the steering gear shaft and that can engage with each other when the input shaft and the steering gear shaft rotate by a certain amount or more.