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US 2009/0289515 A1Published application
Brushless motor
AssigneePanasonic Corporation
InventorMichihiro Shimizu
Life of this patent
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Abstract
A brushless motor to be used for driving a vane pump, which is employed in a module for inspecting vapor leakage of fuel, is disclosed. The brushless motor includes a mounting plate having a through hole, and an annular space is formed between an inner wall of the through hole and an outer wall of a projection of a motor housing. This annular space allows preventing a welding current from flowing into the projection.
Claims2
A brushless motor comprising:
- a stator;
- a rotor including a motor shaft;
- a motor housing, including a cylindrical projection at a center of a top face thereof, for accommodating the stator and the rotor therein;
- a bearing, fixed to an inner wall of the projection, for supporting the motor shaft rotatably;
- and
- a mounting plate including a through hole, which has a greater diameter than a diameter across an outer wall of the projection and forms an annular space between an inner wall of the through hole and the outer wall of the projection, for being mounted to the top face of the motor housing.
3 more elements
Dependencies are inferred from the claim text.