JPH0269574U

JPH0269574U -

Info

Publication number: JPH0269574U
Application number: JP15010588U
Authority: JP
Priority date: 1988-11-16
Filing date: 1988-11-16
Publication date: 1990-05-25

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す要部断面の概略
図、第２図は第１図の―線断面図である。１……ハンドル、２……ステアリングシヤフト
、３……タイヤ、４……電動パワーステアリング
、５……モータ、６……減速ギヤ、７……ギヤ・
ボツクス、８……トルク検出器、９……ＣＰＵ、
１０……出力軸、１１，１６，１７……ギヤ、１
２……オイルレスベアリング、１３……ギヤ保持
アーム、１４Ａ，１４Ｂ……第１、第２バネ、１
５Ａ，１５Ｂ……第１、第２ギヤ、１８……支軸
。 FIG. 1 is a schematic sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line -- in FIG. 1... Handle, 2... Steering shaft, 3... Tire, 4... Electric power steering, 5... Motor, 6... Reduction gear, 7... Gear
Box, 8...Torque detector, 9...CPU,
10... Output shaft, 11, 16, 17... Gear, 1
2... Oil-less bearing, 13... Gear holding arm, 14A, 14B... First and second springs, 1
5A, 15B...first and second gears, 18...support shaft.

Claims

[Claims for Utility Model Registration] 1. A motor that is driven when the rotational torque of the steering wheel reaches a set value is provided, and a transmission mechanism that transmits the rotational driving force of the motor to the reduction gear of the steering shaft is provided with a rotatable motor. A shaft-supported gear holding arm is provided, and a gear is attached to the tip side of the gear holding arm, and a spring is attached to bias the gear in the direction of meshing with a gear directly connected to the motor side, so that the rotational force of the motor is When the spring force is exceeded, the gear holding arm rotates due to the rotational force, the held gear is engaged with a reduction gear connected to the steering shaft side, and a clutch mechanism is provided that continues to engage the gears according to the rotational force of the motor. An electric power steering power transmission device characterized by: 2 The gear holding arm is approximately V-shaped, and its center is attached to the motor output shaft via an oilless bearing, and the first gear and second gear are rotatably attached to both ends of the arm, and the first spring and the second With the springs attached and the spring forces of the first and second springs balanced, both the first gear and the second gear are engaged with the gear fixed to the motor output shaft, while the rotational force of the motor is When the spring force is overcome, the clutch mechanism rotates the gear holding arm and engages either the first gear or the second gear, which is rotating in a predetermined rotational direction, with the reduction gear connected to the steering shaft side. 2. The device according to claim 1, characterized in that: