JPS63142261U

JPS63142261U -

Info

Publication number: JPS63142261U
Application number: JP3511587U
Authority: JP
Priority date: 1987-03-12
Filing date: 1987-03-12
Publication date: 1988-09-20
Anticipated expiration: 2002-03-12
Also published as: JPH0616855Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る電動式動力か
じ取装置の主要部を表わす断面図、第２図は第１
図中の―線矢視図、第３図は第２図中の―
線矢視図、第４図は第２図中の矢印部の拡大
図である。図面中、１は上カバー、３は入力軸、５はピニ
オン軸、９はピニオンケース、１０はトーシヨン
バー、１３は従動歯車、１４はハウジング、１７
は揺動リングギヤ、１９は固定リングギヤ、２０
は太陽歯車、２２は第一遊星歯車、２４は第二遊
星歯車、２６は電動機、３１は減速歯車、３２は
ドライブ歯車、３５はタイロツド、３６はドライ
ブ溝、３７はドライブピン、３９は規制溝、４２
はスプール、４３は変位センサ、４７は輪ばねで
ある。 FIG. 1 is a sectional view showing the main parts of an electric power steering device according to an embodiment of the present invention, and FIG.
In the figure - line arrow view, Figure 3 is in Figure 2 -
4 is an enlarged view of the arrowed portion in FIG. 2. In the drawing, 1 is an upper cover, 3 is an input shaft, 5 is a pinion shaft, 9 is a pinion case, 10 is a torsion bar, 13 is a driven gear, 14 is a housing, 17
is a swinging ring gear, 19 is a fixed ring gear, 20
is a sun gear, 22 is a first planetary gear, 24 is a second planetary gear, 26 is an electric motor, 31 is a reduction gear, 32 is a drive gear, 35 is a tie rod, 36 is a drive groove, 37 is a drive pin, and 39 is a regulation groove. , 42
is a spool, 43 is a displacement sensor, and 47 is a ring spring.

Claims

[Scope of utility model registration request]

A cylindrical input shaft having a steering wheel shaft connected to one end and a steering gear shaft coaxially and rotatably fitted to the other end; a torsion rod spring having one end attached to the input shaft and the other end attached to the steering gear shaft; a driven gear coaxially integrally provided on the input shaft side of the steering gear shaft; A sun gear rotatably fitted around the outer periphery of the input shaft, and a rocker rotatably disposed coaxially with the input shaft outside the sun gear and having teeth formed on the inner peripheral surface. a ring gear, a fixed ring gear fixed coaxially with the input shaft outside the sun gear between the oscillating ring gear and the driven gear, and having teeth formed on its inner peripheral surface; a first planetary gear rotatably provided and meshing with the inner periphery of the rocking ring gear and the outer periphery of the sun gear; a first planetary gear rotatably provided on the driven gear side and coaxial with the first planetary gear; a second planetary gear meshing with the inner periphery of the fixed ring gear and the outer periphery of the sun gear; a drive groove extending in the width direction on the outer periphery of the oscillating ring gear; The oscillating ring gear is fitted in the longitudinal direction of the drive groove in an immovable manner by a groove formed in the casing that holds the oscillating ring gear, and is generated by relative rotation between the input shaft and the steering gear shaft. A drive pin that moves in a straight line with the rotation of
a displacement sensor that detects movement of the drive pin;
An electric power steering system comprising: an output gear that meshes with the driven gear; and an electric motor that rotates in a predetermined rotational direction and at a predetermined rotational speed based on a detection signal from the displacement sensor.