CN201204486Y

CN201204486Y - Motor stator core

Info

Publication number: CN201204486Y
Application number: CNU200820049002XU
Authority: CN
Inventors: 童怀; 井赟; 肖战龙; 方强; 彭清
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2008-06-03
Filing date: 2008-06-03
Publication date: 2009-03-04
Anticipated expiration: 2018-06-03

Abstract

The utility model is a motor stator iron core, comprising a plurality of superposed annular stator iron core stamping (1) which comprises a magnetic yoke and a plurality of magnetic poles, the utility model is characterized in that outer circumference (2) of the magnetic yoke segment between adjacent magnetic poles is in a shape of equidistant circular arc that independently projects, intersection points of the adjacent circular arc segments are located on a central line of the magnetic poles (12). The utility model uses the structure that the outer circumference of the magnetic yoke segment between adjacent magnetic poles is in a shape of equidistant circular arc that independently projects, the intersection points of the adjacent circular arc segments are located on the central line of the magnetic poles, a winding is winded over the magnetic yokes of the stator iron core, which is small in magnetic leakage and good in magnetic centralizing effect, accordingly, iron loss and magnetic hysteresis loss are greatly reduced and efficiency of the motor is effectively improved.

Description

A kind of stator core in motor

Technical field:

The utility model is a kind of stator core in motor, particularly a kind of being applicable to by electronically controlled small-power direct current brushless permanent magnet electromotor stator core.

Background technology:

Traditional stator core in motor, generally comprise the ring-type stator core stamping sheet of several stacks, core stamping comprises yoke and several magnetic poles, its yoke outer peripheral edges are circular, winding generally is wrapped on the magnetic pole of stator core, be applied in by on the electronically controlled direct current brushless permanent magnet electromotor as stator core said structure, there is the coiling difficulty, problems such as coiling efficient is low are head it off, and some producers are wrapped in winding on the circular yoke of stator core, as shown in Figure 2, the winding that is wrapped on the adjacent yoke produces magnetic flux φ 11 respectively, φ 12, and φ 11, the resultant flux of φ 12 on magnetic pole is φ 1, because φ 11, the angle of φ 12 and φ 1 is less than 90 °, therefore the winding leakage field is bigger, poly-magnetic effect is relatively poor, can strengthen iron loss and magnetic hysteresis loss, causes electric efficiency low.

The utility model content:

The purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of and not only can improve winding efficiency, and leakage field is little, and poly-magnetic is effective, can effectively improve the stator core in motor of electric efficiency.

The technical solution of the utility model: a kind of stator core in motor, the ring-type stator core stamping sheet that comprises several stacks, core stamping comprises yoke and several magnetic poles, the outer peripheral edges of the yoke section between wherein every adjacent pole are the impartial circular arc of individual bumps, and the intersection point of every adjacent circular arc segments is positioned on the center line of magnetic pole.

The utility model is because the outer peripheral edges of the yoke section between the every adjacent pole of employing are the impartial circular arc of individual bumps, the intersection point of every adjacent circular arc segments is positioned at the structure of magnetic pole, winding is wrapped on the yoke of stator core, its leakage field is little, poly-magnetic effect is good, therefore, significantly reduce iron loss and magnetic hysteresis loss, thereby effectively improved efficiency of motor.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 produces the schematic diagram of magnetic flux for the winding on prior art the is wrapped in adjacent yoke;

Fig. 3 produces the schematic diagram of magnetic flux for the winding that is wrapped on the adjacent yoke of the present utility model.

Embodiment:

As shown in Figure 1, the utility model stator core in motor, the ring-type stator core stamping sheet 1 that comprises several stacks, core stamping 1 comprises

yoke

11 and 12 magnetic poles 12, the outer peripheral edges 2 of the yoke section between every adjacent pole are the impartial circular arc of individual bumps, and the intersection point of every adjacent circular arc segments is positioned on the center line of magnetic pole 12.

As shown in Figure 3, the stator core of present embodiment, the winding that is wrapped on the adjacent yoke produces magnetic flux φ respectively ₂₁, φ ₂₂, φ ₂Be φ ₂₁, φ ₂₂Resultant flux on magnetic pole, φ ₂₁, φ ₂₂With φ ₂Angle greater than 90 °, according to electromagnetic theory, the winding leakage field is little, poly-magnetic effect is good, therefore, has significantly reduced iron loss and magnetic hysteresis loss, thereby has improved the efficient of motor.

Claims

1, a kind of stator core in motor, the ring-type stator core stamping sheet (1) that comprises several stacks, core stamping (1) comprises yoke (11) and several magnetic poles (12), the outer peripheral edges (2) that it is characterized in that the yoke section between every adjacent pole are the impartial circular arc of individual bumps, and the intersection point of every adjacent circular arc segments is positioned on the center line of magnetic pole (12).