ENGINE COOLING SYSTEM AND MOTOR THEREFOR
First Claim
1. An engine cooling system comprising:
- an engine;
a coolant tank;
a radiator;
a plurality of connecting pipes connecting the engine, the coolant tank and the radiator to form a loop; and
a cooling module for cooling the radiator, the cooling module comprises a motor and an impeller driven by the motor, the motor comprising a stator and a rotor rotatably mounted confronting the stator, the rotor comprising a shaft and a commutator fitted to the shaft, the stator comprising a plurality of brush assemblies, each of the brush assemblies comprising a brush holder, a brush slidably received in the brush holder, and a spring, the spring comprising an elongated unrolled section, a mounting portion adjoining one end of the unrolled section, and a coiled portion adjoining an opposite end of the unrolled section, the mounting portion being fixed to the brush holder and located closer to the commutator than the coiled portion, the coiled portion pressing against a radially outer end of the brush to urge the brush towards the commutator, the unrolled section being able to be coiled into the coiled portion as the length of the brush is reduced, the brush having a concave for accommodating the coiled portion of the spring.
1 Assignment
0 Petitions
Accused Products
Abstract
A cooling module for an engine includes an electric motor and an impeller driven by the motor. The motor includes a stator having brush assemblies, and a rotor having a commutator. Each of the brush assemblies includes a brush holder, a brush slidably received in the brush holder, and a spring. The spring includes a mounting portion, a coiled portion and an elongated unrolled section joining the mounting portion to the coiled portion. The mounting portion is fixed to the brush holder and located closer to the commutator than the coiled portion. The coiled portion presses against a radially outer end of the brush to push the brush towards the commutator. The brush forms a concave for accommodating the coiled portion of the spring. The unrolled section is coiled into the coiled portion as the length of the brush is reduced.
8 Citations
19 Claims
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1. An engine cooling system comprising:
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an engine; a coolant tank; a radiator; a plurality of connecting pipes connecting the engine, the coolant tank and the radiator to form a loop; and a cooling module for cooling the radiator, the cooling module comprises a motor and an impeller driven by the motor, the motor comprising a stator and a rotor rotatably mounted confronting the stator, the rotor comprising a shaft and a commutator fitted to the shaft, the stator comprising a plurality of brush assemblies, each of the brush assemblies comprising a brush holder, a brush slidably received in the brush holder, and a spring, the spring comprising an elongated unrolled section, a mounting portion adjoining one end of the unrolled section, and a coiled portion adjoining an opposite end of the unrolled section, the mounting portion being fixed to the brush holder and located closer to the commutator than the coiled portion, the coiled portion pressing against a radially outer end of the brush to urge the brush towards the commutator, the unrolled section being able to be coiled into the coiled portion as the length of the brush is reduced, the brush having a concave for accommodating the coiled portion of the spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cooling module for an engine cooling system, comprising:
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an impeller; and a motor driving the impeller, the motor comprising a stator and a rotor rotatably mounted confronting the stator, the rotor comprising a shaft and a commutator fitted to the shaft, the stator comprising a plurality of brush assemblies, each of the brush assemblies comprising a brush holder, a brush slidably received in the brush holder, and a spring, the spring comprising an elongated unrolled section, a mounting portion adjoining one end of the unrolled section, and a coiled portion adjoining an opposite end of the unrolled section, the mounting portion being fixed to the brush holder and located closer to the commutator than the coiled portion, the coiled portion pressing against a radially outer end of the brush to push the brush towards the commutator, the unrolled section being able to be coiled into the coiled portion as the length of the brush is reduced, the brush having a concave for accommodating the coiled portion of the spring. - View Dependent Claims (11, 12, 13, 14)
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15. An electric motor for an engine cooling system, comprising:
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a stator comprising a plurality of brush assemblies, each of the brush assemblies comprising a brush holder, a brush slidably received in the brush holder, and a spring, the spring comprising a mounting portion, a coiled portion and an elongated unrolled section extending between the mounting portion and the coiled portion, the mounting portion being fixed to the brush holder, the coiled portion pressing against a radially outer end of the brush, the unrolled section being able to be coiled into the coiled portion as the length of the brush is reduced, the brush having a concave for accommodating the coiled portion of the spring; and a rotor rotatably mounted confronting the stator, the rotor comprising a shaft and a commutator fitted to the shaft; wherein the mounting portion of the spring is located closer to the commutator than the coiled portion. - View Dependent Claims (16, 17, 18, 19)
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Specification