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US 5,844,386 AGranted
Power steering device
AssigneeKoyo Seiko Co., Ltd.
InventorsHirofumi Matsuoka, Yasuji Noritou, Ken Fukuda
Life of this patent
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Abstract
A switching element for controlling electric power to be supplied to a motor for generating steering assistance power, and a circuit which outputs a control signal to the switching element according to a driving condition are incorporated in an insulating casing. The insulating casing is attached to a housing of a power steering device. An elastic heat-conducting insulating sheet lies between the switching element and the housing. The switching element is pressed against the housing via the sheet.
Claims6
A power steering device, comprising;
- a housing;
- a motor for generating steering assistance power;
- a switching element for controlling electric power to be supplied to the motor;
- a circuit which outputs a control signal to the switching element according to a driving condition;
- an insulating casing incorporating both the switching element and the circuit;
- and
- an elastic heat-conducting insulating sheet between the switching element and the housing, wherein
- the casing is attached to the housing so that the switching element is pressed against the housing via the sheet.
5 more elements
Dependencies are inferred from the claim text.