Heat radiation fan and method of manufacture

Abstract

The invention relates to a radiator fan, which comprises a fan frame the center of which is provided with a central cylinder, a stator which is sleeved outside the central cylinder, a bearing system which is fixed inside the central cylinder and a rotor which is supported by the bearing system. The bearing system is entirely and fixedly connected to the central cylinder of the fan frame during the process of forming the fan frame, thereby the problems of combined tolerance, concentricity and so on between the bearing system and the fan frame can be effectively prevented; the shake phenomenon is prevented during the operating process of the fan; the assembly steps are simplified and the fan performance is improved. The invention also provides a manufacturing method for the radiator fan.

Description

technical field [0001] The invention relates to a heat dissipation fan, in particular to a heat dissipation fan used for heat dissipation of electronic components and a manufacturing method thereof. Background technique [0002] With the continuous development of the electronic information industry, the operating frequency of electronic components (especially the central processing unit) continues to increase, and the heat generated by electronic components also increases, and the temperature continues to rise, which seriously threatens the performance of electronic components. To ensure the normal operation of the electronic components, a radiator is usually installed on the surface of the electronic components, and a cooling fan is installed on the radiator to assist the electronic components in cooling. [0003] The existing heat dissipation fan includes a fan frame with a central column in the center, a stator fixed outside the central column, a bearing embedded in the c...

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Problems solved by technology

[0004] During the manufacturing process of the above-mentioned cooling fan, the bearing needs to be pressed into the center column of the fan frame with a relatively large force, and the outer wall of the bearing and the inner wall of the center column generate a relatively large frictional force. Since the fan frame is made of plastic materials, it is easier to Deformation, during the assembly of the bearing to the fan frame, there will be problems such as combination tolerance and concentricity between the bearing and the center column, so that the bearing and the center column cannot achieve the purpose of tight combination, and the bearing and the center column cannot be ensured. The good concentricity between the columns will lead to shaking or vibration during the actual operation of the fan due to poor concentricity, resulting in the fan not running smoothly, resulting in noise and even premature damage to the bearing, making the quality of the fan and It is difficult to guarantee the service life; on the other hand, in the fan assembly process, there are many assembly steps required, and the assembly efficiency is not ideal, so it is necessary to overcome the above problems

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