Fan and its motor

Abstract

The utility model discloses a fan and a motor, wherein the motor comprises a primary module, a rotor component and a secondary module. The primary module comprises a primary casing and a stator component which is arranged in the primary casing, and is characterized in that the rotor component comprises a rotating shaft and a magnetic element which is covered on the rotating shaft corresponding to the stator component; while the secondary module comprises a secondary casing and a driving element which is arranged in the secondary casing and is electrically connected with the stator component; the primary casing is connected with the secondary casing in order to accept the rotor component and the rotating shaft extends from the primary casing. The fan comprises the above motor and an impeller which is connected with the rotating shaft. The amount of the components can be effectively reduced by integrating and modularizing a plurality of components, and a holding space with a good leak tightness is formed by connecting the primary casing with the secondary casing, therefore the influence of the environment foreign matter and moisture can be avoided, the reliability and the service life of the motor can be both improved, the process of the assembly and maintenance can be simplified and the man-hour of the assembly and maintenance can be reduced.

Description

technical field [0001] The invention relates to a fan and its motor, in particular to a fan and its inner rotor motor. Background technique [0002] A motor is a component that converts electrical energy into mechanical energy, and it has been widely used in mechanical structures in daily life. There are many types of motors, which can be roughly divided into inner rotor motors and outer rotor motors. The main difference between the two is whether the rotor structure rotates internally or externally when the motor rotates. [0003] Please refer to FIG. 1 , which shows a conventional brushless motor 1 that can be used to drive the impeller of a fan to rotate. The brushless motor 1 includes a bearing housing 10 , a rotor structure 11 , a stator structure 12 and a circuit board 13 , wherein the rotor structure 11 includes a rotating shaft 111 and a magnetic element 112 , and the rotating shaft 111 is pivoted on the bearing housing 10 . The stator structure 12 includes a plura...

AI Technical Summary

Problems solved by technology

However, since the stator structure 12 and the circuit board 13 must be electrically connected by welding, the time consumption increases and the manufacturing cost increases.

In addition, once the coil set 121 or the circuit board 13 is damaged and needs to be replaced, since the coil set 121 or the circuit board 13 cannot be easily separated after welding, maintenance and replacement are very difficult.

[0004] Furthermore, since there are many matching parts between the various components of the brushless motor 1, and there is a gap G formed between the rotor structure 11 and the circuit board 13, the overall sealing performance of the brushless motor 1 is not good, and foreign objects in the external environment or Water vapor, etc. can easily enter the motor structure through the gap G, affecting the function of the components, thereby reducing the reliability and service life of the motor

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