Motor and cooling fan provided with same

Abstract

The invention relates to a motor and a cooling fan provided with the same. The motor consists of a base, a stator, a rotor, a circuit board and a heat-conducting insulator. The base is provided with a cooling bottom board, the stator is arranged on the base, and the rotor is rotatably combined with the base and is opposite to the stator. The circuit board is combined with the base and is electrically connected with the stator. The heat-conducting insulator is arranged between the circuit board and the cooling bottom board and respectively connected with one surface of the circuit board and the cooling bottom board in a propping manner. The high heat conductivity and electric insulation properties of the heat-conducting insulator between the cooling bottom board and the circuit board are utilized, thus not only can the short circuit of the circuit board be avoided, but also the heat generated by the circuit board can be effectively radiated to the outside.

Description

technical field [0001] The present invention relates to a motor and a heat dissipation fan with the motor, in particular to a motor with better heat dissipation capacity and a heat dissipation fan with the motor. Background technique [0002] Existing motor 9, please refer to figure 1 As shown, it includes a first housing 91 , a second housing 92 , a stator 93 , a rotor 94 and a circuit board 95 . The first housing 91 has an accommodating space 911 , the second housing 92 is combined with an opening of the accommodating space 911 , and the stator 93 is disposed in the accommodating space 911 . The rotor 94 is rotatably disposed at the center of the stator 93 through the first casing 92 . One surface of the circuit board 95 leans against a bonding shoulder 921, and the other surface of the circuit board 95 is pressed by the cover plate 922. Since the cover plate 922 is made of metal, the circuit board 95 An insulating plate 96 must be additionally placed between the cover ...

AI Technical Summary

Problems solved by technology

[0004] However, since the above-mentioned circuit board 95 and the metal cover plate 922 are blocked by the insulating plate 96, and the insulating plate 96 is mostly made of an electrical insulating material with low thermal conductivity, such as: polyvinyl chloride (PVC) or polystyrene (PS), so the insulating plate 96 cannot efficiently conduct heat energy directly to the cover plate 922 for heat exchange, and can only indirectly use the gas in the air chamber as a heat transfer medium to dissipate heat energy to the outside, resulting in The overall heat dissipation efficiency of the existing motor 9 is low, and the internal temperature of the motor cannot be effectively reduced when the motor is working. It is easy to cause the entire motor to be overheated, shorten the service life, or even fail to operate.

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