Drive device
AssigneeDenso Corporation
InventorsShuhei Miyachi, Takashi Tsuboi
Life of this patent
Estimating the term…
Abstract
A drive device includes a cover and a connector case. The cover is shaped into a cup form and has a connector insertion hole at a bottom portion of the cover. In a view taken in a connector inserting direction, the connector insertion hole is larger than a contour of a connector portion of the connector case, and a gap between an inner wall surface of the connector insertion hole and the contour of the connector portion is equal to or smaller than 3 mm. Thereby, although the connector insertion hole is formed to be larger than the connector portion to enable the insertion of the connector portion into the connector insertion hole at a time of assembly, a size of a cross section of the opening of the connector insertion hole is minimized.
Claims5
A drive device to be used in an electric power steering apparatus, the drive device comprising:
- a motor;
- a cover that is shaped into a cup form and includes:
- a tubular portion that is installed to a housing of the motor;
- and
- a bottom portion that includes a connector insertion hole;
- a control unit that is installed in an inside of the cover and controls energization of a coil of the motor;
- a connector case that includes:
- a lid portion, which is installed in the inside of the cover to close the connector insertion hole at the inside of the cover;
- and
- a connector portion that projects from the lid portion to an outside of the cover through the connector insertion hole;
- a first ring-shaped seal member that is installed between the cover and the lid portion;
- and
- a fixing portion that fixes the bottom portion and the lid portion together, wherein:
- a portion of the cover surrounding the fixing portion extends radially beyond an entirety of a head of the fixing portion;
- an inserting direction of the connector portion into the connector insertion hole is defined as a connector inserting direction;
- the connector insertion hole is formed such that in a view taken in the connector inserting direction, the connector insertion hole is larger than a contour of the connector portion, and an inner wall surface of the connector insertion hole is placed at a location that is closer to the contour of the connector portion in comparison to a location of the fixing portion, and
- the connector insertion hole is formed such that in the view taken in the connector inserting direction, a gap between the inner wall surface of the connector insertion hole and the contour of the connector portion is equal to or smaller than 5 mm.
Dependencies are inferred from the claim text.