Brushless DC pump with enclosed circuit board
First Claim
1. A motor-driven pump comprising:
- a pump housing;
a brushless motor mounted in said pump housing;
pump means mounted in said pump housing and adapted to be driven by said brushless motor; and
a circuit package mounted in a liquid passage defined in said pump housing, said circuit package enclosing a circuit board mounting thereon a control circuit for controlling rotation of said brushless motor and means for detecting a rotor position of said brushless motor, wherein said circuit board is fixed through an elastic member to an inner wall of said circuit package with a gap defined between said circuit board and said inner wall, and said circuit package is opposed to said brushless motor at a position where said circuit board is spaced a distance from said brushless motor in an axial direction of a rotating shaft of said brushless motor.
1 Assignment
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Accused Products
Abstract
A motor-driven pump including a pump housing; a brushless motor mounted in the pump housing; pump means mounted in the pump housing and adapted to be driven by the brushless motor; and a circuit package mounted in a liquid passage defined in the pump housing, the circuit package enclosing a circuit board mounting thereon a control circuit for controlling rotation of the brushless motor and means for detecting a rotor position of the brushless motor, wherein the circuit board is fixed through an elastic member to an inner wall of the circuit package with a gap defined between the circuit board and the inner wall, and the circuit package is opposed to the brushless motor at a position where the circuit board is spaced a distance from the brushless motor in an axial direction of a rotating shaft of the brushless motor.
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Citations
29 Claims
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1. A motor-driven pump comprising:
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a pump housing; a brushless motor mounted in said pump housing; pump means mounted in said pump housing and adapted to be driven by said brushless motor; and a circuit package mounted in a liquid passage defined in said pump housing, said circuit package enclosing a circuit board mounting thereon a control circuit for controlling rotation of said brushless motor and means for detecting a rotor position of said brushless motor, wherein said circuit board is fixed through an elastic member to an inner wall of said circuit package with a gap defined between said circuit board and said inner wall, and said circuit package is opposed to said brushless motor at a position where said circuit board is spaced a distance from said brushless motor in an axial direction of a rotating shaft of said brushless motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 25, 26, 27, 28, 29)
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13. A circuit package for use with a motor-driven pump including a pump housing, a brushless motor mounted in said pump housing, pump means mounted in said pump housing and adapted to be driven by said brushless motor;
- wherein said circuit package is mounted in a liquid passage defined in said pump housing, said circuit package enclosing a circuit board mounting thereon a control circuit for controlling rotation of said brushless motor and means for detecting a rotor position of said brushless motor, wherein said circuit board is fixed through an elastic member to an inner wall of said circuit package with a gap defined between said circuit board and said inner wall, and said circuit package is opposed to said brushless motor at a position where said circuit board is spaced a distance from said brushless motor in an axial direction of a rotating shaft of said brushless motor.
- View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification