Gear housing for electric power steering device
AssigneeNsk Ltd.
InventorsTakayuki Hiramoto, Taketoshi Chifu
Life of this patent
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Abstract
To provide a gear housing comprising a front housing having a structure which can make the front housing lightweight and which can increase the strength of a continuous section of a worm wheel housing portion and a support portion where stress tends to be concentrated. A front-side housing is made of synthetic resin, and includes a housing front plate portion which constitutes a worm wheel housing portion and a support portion integrated with the housing front plate portion. A reinforcing member made of a metal plate is provided at a corner portion between a front surface of the housing front plate portion and a lower surface of the support portion.
Claims12
A gear housing for an electric power steering device comprising:
- a worm wheel housing portion, a worm housing portion, and a support portion,
- the worm wheel housing portion being for housing a worm wheel and having a housing cylinder portion arranged around the worm wheel, an annular shaped housing front plate portion that covers a front-end opening of the housing cylinder portion, and an annular shaped housing rear plate portion that covers a rear-end opening of the housing cylinder portion;
- the worm housing portion being for housing a worm shaft, and provided in part in a circumferential direction of an outer-diameter-side portion of the worm wheel housing portion;
- the support portion being for providing support with respect to a vehicle body, and provided to protrude forward from a front surface of the housing front plate portion;
- and
- at least the housing front plate portion and the support portion integrally formed of synthetic resin, and a metal reinforcing member being provided in a continuous portion between the housing front plate portion and the support portion.
Dependencies are inferred from the claim text.