Fan and its motor cover

Abstract

A fan is used to solve the problem that the motor protection cover is easy to fall off from the fan frame base after a period of use in the past. The fan includes: a fan frame with a base inside; a stator set on the base; a fan wheel rotatably set on the stator; and a motor protection cover with an axially opposite first end and a second end, the first end of the motor protection cover is provided with a buckle part, a joint surface and an elastic resisting part, and the elastic resisting part provides axial elastic tension, so that the buckle part and the The base of the fan frame is tightly combined.

Description

technical field [0001] The invention relates to a fan and its motor protection cover, in particular to a fan capable of providing heat dissipation to a heat source during operation, and the motor protection cover capable of maintaining a stable combination with the fan frame base. Background technique [0002] Please refer to figure 1 , it is a kind of existing fan 9, and this existing fan 9 comprises a fan frame 91, a stator 92, a rotor 93, a protective cover 94 and a circuit board 95; This fan frame 91 is provided with a base 911 , the stator 92 is arranged on the base 911, the rotor 93 is rotatably arranged on the stator 92, the protective cover 94 cooperates with a sealing rubber ring R and is combined with the inner wall of a ring wall 912 of the base 911, the circuit board 95 It is disposed in the space formed by the protective cover 94 and the base 911 . An embodiment of the conventional fan 9 has been disclosed in the Taiwan Patent Publication No. M382382 "Fan and ...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing fan 9 is assembled, an additional sealing rubber ring R needs to be added to be used with the protective cover 94, so that the existing fan 9 has a large number of components, resulting in high manufacturing costs and material management costs. It also causes inconvenient assembly and it is difficult to improve assembly efficiency

On the other hand, because the protective cover 94 of the existing fan 9 is tightly fitted on the inner wall of the ring wall 912 of the base 911 only through the sealing rubber ring R, and the sealing rubber ring R is limited by the characteristics of the material, it will Gradually deteriorates over time and loses its elasticity. Therefore, after the fan 9 has been used for a period of time, the protective cover 94 is likely to fall off from the base 911 because the sealing rubber ring R cannot maintain tight contact with the inner wall of the ring wall 912. Thereby deriving the overhaul action that needs regular inspection and replacement of sealing rubber ring R, causes the inconvenience of using and high maintenance cost of this existing fan 9

Furthermore, if the protective cover 94 is lost without the user noticing, not only need to purchase a new protective cover 94 to increase the maintenance cost, but also before the new protective cover 94 is put back into the base 911, Make the fan 9 operate in a relatively vulnerable state. If a situation such as being hit occurs, the circuit board 95, the rotor 93 or the stator 92 of the fan 9 may be directly damaged, thereby deriving a higher maintenance cost, or Even cause this fan 9 to be severely damaged and cannot be maintained, shortening the service life of this existing fan 9, so the existing fan 9 really still needs to be improved

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