Stator of motor and manufacturing method thereof

A manufacturing method and stator technology, which are applied in the manufacture of motor generators, stator/rotor bodies, electrical components, etc., can solve problems such as adverse effects on the service life of motors, increase wear of brush devices, etc., and achieve electromagnetic interference reduction and simplification. structure, cost reduction effect

Inactive Publication Date: 2015-02-25
BOSCH POWER TOOLS CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] image 3 It shows the relationship curve between the commutation angle and the magnetic flux density measured through experiments in the motor of the prior art. It can be seen that when the commutation angle is 22.5 degrees, the armature rotates out of the end of the side pole piece 15b The DC flux (or AC peak flux) density is as high as about 0.15 Tesla, resulting in obvious electric sparks during commutation, thereby increasing the wear of the brush device in contact with the commutator, and shortening the service life of the motor. bring adverse effects

Method used

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  • Stator of motor and manufacturing method thereof
  • Stator of motor and manufacturing method thereof
  • Stator of motor and manufacturing method thereof

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Embodiment Construction

[0052] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0053] Figure 5 The cross-sectional structure of the stator and rotor of the motor according to the first embodiment of the present invention is shown. Wherein, the motor is an AC / DC dual-purpose motor. The stator 30 of the motor includes two pairs of main magnetic poles 31 and field windings 33, and the rotation direction of the rotor 32 is clockwise (as shown by the arrow in the figure). The main magnetic pole 31 includes a pole body 34, a pole shoe 35a at the armature turning-in side and a pole shoe 35b at the armature turning-out side, and the concentrated winding is embedded in the stator between the pole shoe 35a at the armature turning-in side and the pole body 34 The slot 36 and the stator slot 37 between the pole shoe 35 b and the pole body 34 on the armature turning-out side are the field winding 33 .

[0054] Such as Figures 6A-6B ...

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Abstract

The invention relates to a stator of a motor and a manufacturing method of the stator. The stator of the motor comprises a plurality of main pole pairs and a plurality of exciting windings. Each main pole pair comprises a pole body, an armature inlet side pole shoe and an armature outlet side pole shoe. All the exciting windings are embedded in stator grooves between the armature inlet side pole shoes and the pole bodies and between the armature outlet side pole shoes and the pole bodies. The stator is characterized in that grooves and / or through holes are formed in at least one armature outlet side pole shoe, so that the overall or local width and / or the overall or local thickness of at least one armature outlet side pole shoe are / is reduced.

Description

technical field [0001] The invention relates to a motor, in particular to a motor stator with longer service life and higher working efficiency and a manufacturing method thereof. Background technique [0002] figure 1 Shown is the motor in the prior art, especially the cross-sectional structure of the stator and rotor of the AC and DC dual-purpose motor. The structure of the motor in the prior art should be composed of a stator 10 and a rotor 20 . The part that rotates when the motor is running is called the rotor (armature) 20 (the arrow in the figure shows that its rotation direction is clockwise), and the rotor (armature) 20 interacts with the stator 10 to generate electromagnetic torque and induced electromotive force. It consists of a rotating shaft 21 , an armature core 22 , an armature winding 23 , a commutator (not shown) and a fan (not shown). Wherein the armature core 22 is fixed on the rotating shaft 21, and the outer circle of the armature core 22 has an armat...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/16H02K15/02H02K23/64
CPCH02K1/16H02K15/026H02K23/64
Inventor 方承志欧潇瑜刘纪刚
Owner BOSCH POWER TOOLS CHINA
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