Cooling fan and assembly method thereof

一种散热风扇、组装方法的技术，应用在泵装置、机电装置、电动组件等方向，能够解决组装不便、无法确保电路板绝缘效果、轴向高度无法缩减等问题，达到降低轴向高度、提升组装便利性、佳定位功效的效果
CN102996474AActive Publication Date: 2013-03-27SUNONWEALTH ELECTRIC MACHINE IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUNONWEALTH ELECTRIC MACHINE IND
Publication Date
2013-03-27

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Abstract

A cooling fan includes a fan frame, a circuit board, a stator-coil unit and an impeller. The fan frame includes a metal seat and a lateral wall. The metal seat comprises an engaging face and an engaging portion arranged on the engaging face. The lateral wall is arranged on a periphery of the metal seat and includes an air inlet and an air outlet. The circuit board includes a positioning hole. The circuit board is press fitted around the engaging portion of the metal seat via the positioning hole and adhered to the engaging face of the metal seat. The circuit board includes an insulation layer facing the metal seat. The stator-coil unit is mounted on the metal seat of the fan frame and electrically connected to the circuit board. The impeller is rotatably coupled with the stator-coil unit. Therefore, the Cooling fan and the assembly method thereof can simplify the assembling step and improve the assembling convenience, and can effectivley reduce the axial height of the cooling fan.
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Description

technical field

[0001] The invention relates to a heat dissipation fan and its assembly method, in particular to a heat dissipation fan and its assembly method which are easy to combine the circuit board with the metal base and ensure the insulating effect between the circuit board and the metal base. Background technique

[0002] Please refer to figure 1 As shown, it is a fixing structure of a cooling fan stator group disclosed in the Taiwan Patent No. M387164. The existing cooling fan 8 includes a casing 81, a stator set 82 and a fan blade set 83; the casing 81 is integrally injection-molded with a fan seat 811 and a central shaft column 812, and the fan seat 811 is provided with a first Engaging portion 813 ; the stator assembly 82 has a stator 821 composed of silicon steel sheets and coils, the stator 821 is combined with a circuit board 822 , and the stator 82 is provided with several second engaging portions 823 .

[0003] When the existing cooling fan 8 is actually ...

Claims

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