Brush assembly
First Claim
Patent Images
1. A brush assembly for a brush motor, comprising:
- a support member,brush holders disposed on the support member,at least two first brushes and at least two second brushes respectively mounted to the brush holders,a first motor terminal and a second motor terminal for two adjacent brushes connecting with an external power supply,a first filter circuit connected to the first motor terminal,a second filter circuit connected to the second motor terminal,wherein the first motor terminal, the second motor terminal, the first filter circuit and the second filter circuit are mounted in a region defined by of said brushes, and said two adjacent brushes form an angle greater than 60 degrees but less than 180 degrees,wherein a variable resistor is connected between the first motor terminal and the second motor terminal,wherein the at least two first brushes have the same polarity, the at least two second brushes have the same polarity opposite to the first brushes, and said two adjacent brushes defined the region have the same polarity.
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Accused Products
Abstract
A brush assembly for a brush motor includes a support member, brush holders, at least four brushes respectively mounted to the brush holders, and first and second motor terminals for connecting with an external power supply. A first filter circuit is connected between the first motor terminal and corresponding first brushes. A second filter circuit is connected between the second motor terminal and corresponding second brushes. The first and second motor terminals and the first and second filter circuits are mounted in a region defined by two corresponding adjacent brushes forming an angle greater than 60 degrees but less than 180 degrees.
18 Citations
18 Claims
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1. A brush assembly for a brush motor, comprising:
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a support member, brush holders disposed on the support member, at least two first brushes and at least two second brushes respectively mounted to the brush holders, a first motor terminal and a second motor terminal for two adjacent brushes connecting with an external power supply, a first filter circuit connected to the first motor terminal, a second filter circuit connected to the second motor terminal, wherein the first motor terminal, the second motor terminal, the first filter circuit and the second filter circuit are mounted in a region defined by of said brushes, and said two adjacent brushes form an angle greater than 60 degrees but less than 180 degrees, wherein a variable resistor is connected between the first motor terminal and the second motor terminal, wherein the at least two first brushes have the same polarity, the at least two second brushes have the same polarity opposite to the first brushes, and said two adjacent brushes defined the region have the same polarity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A brush motor comprising a stator, a rotor and a brush assembly;
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wherein the rotor comprises a shaft, a commutator and a rotor core fixed to the shaft, and rotor windings wound around the rotor core and electrically connected to commutator segments of the commutator; and the stator comprises a housing, an end cap disposed at one end of the housing, and bearings supporting the shaft; and the brush assembly comprises; a support member, brush holders disposed on the support member, at least two first brushes and at least two second brushes respectively mounted to the brush holders, a first motor terminal and a second motor terminal for connecting with an external power supply, a first filter circuit connected to the first motor terminal, a second filter circuit connected to the second motor terminal, wherein the first motor terminal, the second motor terminal, the first filter circuit and the second filter circuit are mounted in a region defined by two adjacent brushes of said brushes said two adjacent brushes form an angle greater than 60 degrees but less than 180 degrees, and the brushes are positioned around the commutator, and wherein a variable resistor is connected between the first motor terminal and the second motor terminal, the at least two first brushes have the same polarity, the at least two second brushes have the same polarity opposite to the first brushes, and said two adjacent brushes defined the region have the same polarity. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification