A micro-motor and a fan including the same

A micro-motor and motor housing technology, applied in the field of micro-motors and fans with micro-motors, can solve problems such as easy shaking, vibration and noise, and shortened axial joint height, so as to achieve smooth and stable operation, improve stability, and shaft The effect of increasing the binding height

Inactive Publication Date: 2019-07-16
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the existing micromotor can reduce the overall axial height to meet the requirement of thinning, it also shortens the axial joint height between the bearing and the shaft, making the gap between the bearing and the shaft shorter. The axial coupling height of the motor is insufficient, so it often causes poor stability during rotation and is easy to shake, which in turn easily causes large vibration and noise, which seriously affects the movement stability of the overall micro motor

Method used

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  • A micro-motor and a fan including the same
  • A micro-motor and a fan including the same
  • A micro-motor and a fan including the same

Examples

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no. 1 example

[0040] Please refer to figure 1 , which is the first embodiment of the micro motor of the present invention, the micro motor includes a base 1, a bearing 2, a shaft 3, a stator group 4 and a rotor group 5, the bearing 2 is located on the base 1 , the shaft 3 is rotatably coupled to the bearing 2 , the stator set 4 is coupled to the base 1 , and the rotor set 5 is coupled to the shaft 3 .

[0041] Please refer to figure 2 , the base 1 has an opposite inner surface 1a and an outer surface 1b, the inner surface 1a of the base 1 can be protruded with a shaft tube 11, the shaft tube 11 is used to accommodate the bearing 2; in this embodiment In the example, the shaft tube 11 is integrally connected with the inner surface 1a, so the base 1 can be integrally injection-molded with plastic material to improve the manufacturing convenience of the base 1. Although the base is integrally injection-molded in this embodiment 1 as an example, but not limited thereto.

[0042] Please refe...

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Abstract

A micro-motor is used to solve the problem of insufficient axial joint height between existing bearings and shafts. The micro-motor comprises a base; a bearing arranged on the base and having a shafthole and a highest surface in the axial direction; an axial center rotatably coupled to the shaft hole; a stator assembly coupled to the base; and a rotor assembly coupled to the axial center. The rotor assembly comprises a motor housing having a lowest bottom edge in the axial direction corresponding to the bearing. The lowest bottom edge has a minimum spacing from the highest surface of the bearing, the minimum spacing being between 0.05 mm and 0.16 mm. The invention also provides a fan for the micro-motor.

Description

technical field [0001] The invention relates to a motor, in particular to a micro motor. The invention also relates to a fan, in particular to a fan with a micro motor. Background technique [0002] With the development of thinner and more high-performance electronic products, cooling fans not only meet the heat dissipation requirements of electronic products, but also further pursue thinning. Therefore, in recent years, the development trend of many cooling fans has focused on how to reduce the cooling fan. axial height. [0003] The existing micro motor includes a base, a rotor and a stator. A bearing and an axis are arranged in the base, and the axis can be relatively rotatably arranged in an axis hole of the bearing. The rotor has a hub rotatably arranged on the shaft, and the rotor also has a magnet ring combined with the hub and facing the base. The stator has a circuit substrate and a plurality of induction coils, the circuit substrate is assembled between the bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/16F04D25/08
CPCF04D25/08H02K5/16H02K2213/03
Inventor 洪银树尹佐国张简文德
Owner SUNONWEALTH ELECTRIC MACHINE IND
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