Electric power steering device
AssigneeMitsubishi Electric Corporation
InventorsSatoru AKUTSU, Kohei USHIO, Yoshihito ASAO
Life of this patent
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Abstract
An electric power steering device (1) according to the present invention includes: a gearbox; and a driving control unit (4) connected to the gearbox through a mounting-portion contact surface (7). The driving control unit (4) includes an outer-diameter gradually increasing surface (11) formed on one end portion thereof, the outer-diameter gradually increasing surface (11) being connected so that an outer diameter thereof on the mounting-portion contact surface (7) matches with an outer diameter of the gearbox. Thus, it is possible to prevent a liquid from entering inside through the mounting-portion contact surface (7), thereby preventing electrical insulating properties of internal electric components from being lowered.
Claims11
An electric power steering device, comprising:
- a gearbox;
- and
- a driving control unit, which is coaxially connected to the gearbox through a mounting-portion contact surface corresponding to an end surface of the driving control unit, for controlling driving of a motor unit that is a steering assist force generation source, the driving control unit including an outer-diameter gradually increasing surface formed on one end portion thereof, the outer-diameter gradually increasing surface being connected so that an outer diameter thereof on the mounting-portion contact surface matches with an outer diameter of the gearbox and gradually enlarging along an axis direction.
An electric power steering device, comprising:
- a gearbox;
- and
- a motor unit, which is coaxially connected to the gearbox through a mounting-portion contact surface corresponding to an end surface of the driving control unit, and is a steering assist force generation source,
- the motor unit including an outer-diameter gradually increasing surface formed on one end portion thereof, the outer-diameter gradually increasing surface being connected so that an outer diameter thereof on the mounting-portion contact surface matches with an outer diameter of the gearbox and gradually enlarging along an axis direction.
Dependencies are inferred from the claim text.