Composite structure of radiator fan and molding method thereof

Abstract

The invention discloses a composite structure of a radiator fan and a molding method thereof. The composite structure of the radiator fan is characterized by comprising a base plate, a stator insertion seat positioning part, a stator group, a plastic combined seat part, an axle center and a rotor blade group, wherein the base plate comprises an attached surface and a stator assembly surface; the stator insertion seat positioning part is arranged in the center of the stator assembly surface; the stator group comprises silicon steel sheets, coils and a plastic insulating frame seat; the plastic combined seat part is integrally formed on the stator group, and can be inserted, connected and matched with the stator insertion seat positioning part; the axle center is connected to the plastic combined seat part, and has a root fixedly connected to the center of the plastic combined seat part; and the rotor blade group comprises a hub, blades, a shaft sleeve, a bearing component and magnetic rings. The axle center is integrally assembled on the plastic structure of the stator group, and a composite design is adopted between the stator group and the base plate, so precise positioning between the axle shaft and the silicon steel sheets and coils of the stator group can be easily realized by the planning design of an extrusion mould. Therefore, the composite structure of the radiator fan can achieve great improvements in combination and position correction accuracy, is smoother to run and has the advantages of effectively reducing noises, along with practicability and progressiveness.

Description

technical field [0001] The invention relates to a heat dissipation fan, in particular to an innovative design of a combined structure of a rotor and a stator of a heat dissipation fan and a forming method. Background technique [0002] In the existing heat dissipation fan, if the shaft center is set on the rotor hub side, there are many parts that are prone to fit errors, such as the fit error between the shaft center and the rotor hub, the fit error between the rotor magnet ring and the stator coil, the shaft The matching error between the core and the stator bearing, the matching error between the stator bearing and the shaft seat, etc., based on this, in the specific manufacturing process of this kind of cooling fan, there is often excessive noise due to the difficulty in implementing precise positioning. Big problems and drawbacks. [0003] In view of this, the industry has developed a reverse-shaft cooling fan. The structure of this type of cooling fan is designed beca...

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Problems solved by technology

[0002] In the existing heat dissipation fan, if the shaft center is set on the rotor hub side, there are many parts that are prone to fit errors, such as the fit error between the shaft center and the rotor hub, the fit error between the rotor magnet ring and the stator coil, the shaft The matching error between the core and the stator bearing, the matching error between the stator bearing and the shaft seat, etc., based on this, in the specific manufacturing process of this kind of cooling fan, there is often excessive noise due to the difficulty in implementing precise positioning. Big Problems and Disadvantages

[0003] In view of this, the industry has developed a reverse-shaft cooling fan. The structure of this type of cooling fan is designed because the root of the rotor shaft is reversed and combined with the stator seat, so the shaft and the stator base It is easier to achieve precise vertical accuracy between them. However, because the coil group of the stator is usually combined in a single module form on the pre-formed convex part of the stator base, after its combination, it is easy to have an excessive gap between the axis and the axis. Therefore, after the rotor and the stator are assembled, it is difficult to achieve the positive position between the coil group of the stator and the magnet ring of the rotor, so that there are still problems of poor smoothness and excessive noise during operation.

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