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Brushless motor

A technology for a motor and a heat-dissipating housing, applied in the field of brushless motors, can solve the problem that the length may not be improved, and achieve the effect of shortening the overall length and improving the cooling efficiency

Active Publication Date: 2011-06-08
MAX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, since the switching element is fixed upright on the substrate, it can be said that miniaturization has been achieved, but the overall length has not necessarily been improved.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0027] Typical embodiments of the present invention are described below based on the drawings.

[0028]

[0029] figure 1 It is a front perspective view showing an example of the brushless motor according to the first exemplary embodiment of the present invention. figure 2 It is a rear perspective view of a brushless motor. image 3 It is an exploded perspective view of a brushless motor. This brushless motor is composed of a heat dissipation housing 1 , a rotor 2 , a stator 3 and an inner cover 4 . The rotor 2 and the stator 3 are accommodated in the heat dissipation housing 1, and the inner cover 4 is fixed on the heat dissipation housing 1 by screws, so that the heat dissipation housing 1, the rotor 2, the stator 3, and the inner cover 4 integrally constitute a brushless motor.

[0030] The heat dissipation case 1 is made of a material with good thermal conductivity such as aluminum and is formed into a cylindrical shape with a bottom. Such as Figure 4 As shown, a ...

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PUM

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Abstract

In a brushless motor, (i) a switching element (10), which turns on and off energization of a coil (32) arranged on a stator (3), is adhesively fixed to a bottom outer surface of a bottomed cylindrical heat dissipating housing (1). (ii) A rotor (2) and a stator (3) are stored inside the heat dissipating housing (1), and a fixing section (16) for fixing a bearing (30) for the rotor (2) is arranged on the bottom inner surface. (iii) On an end portion on the side of the heat dissipating housing (1) of a rotating shaft (20) of the rotor (2), a cooling fan (22) for cooling the heat dissipating housing (1) is fixed. A storing recessed section (24) for storing the bearing (30) is formed at the center of the cooling fan (22).

Description

technical field [0001] The present invention relates to a brushless motor, and more specifically, to a brushless motor provided with a cooling fan for cooling heat generated from switching elements. Background technique [0002] Conventionally, a brushless motor has been proposed in which heat generated by a switching element for turning on or off electricity to a stator coil is fixed to a stator core to cool the heat generated by the switching element. On the heat radiating member, heat is radiated from the heat radiating member to the stator core, thereby making the stator core function as a heat sink (for example, Japanese Patent Application Laid-Open No. 2004-357371). [0003] In the brushless motor described above, the switching element is fixed to the heat dissipation member, and the heat dissipation member is fixed to the stator core. The cooling by the cooling fan indirectly cools the switching element via the stator core and the heat dissipation member. Furthermor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/02H02K9/06H03K11/00H02K29/00
CPCH02K11/0073H02K5/1732H02K9/06H02K9/22H02K5/18H02K11/33H02K9/227
Inventor 扬原纪元一场朋典
Owner MAX CO LTD