Motor, stator for motor, and motor shell manufacturing method

A technology for electric motors and shells, applied in the manufacture of motor generators, stator/rotor bodies, electric components, etc., can solve the problems of deterioration of motor shell assembly accuracy, poor equipment and cost, narrowing of magnetic circuits, etc., to achieve Effects of reducing cutting and poor insulation, reducing poor insulation, and reducing burrs

Inactive Publication Date: 2006-10-04
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to press processing for manufacturing the stator, deburring of the drum must be added separately, which is unfavorable in terms of equipment and cost
In addition, during the drum deburring process, the pole teeth, which are important to the characteristics of the motor, may be bent, damaged, etc.
In addition, in the deburring process of the drum, parts other than the pole teeth, such as the edge of the opening end face of the motor housing, will also be cut, so the assembly accuracy of the motor housing will deteriorate and the magnetic circuit will become narrower.

Method used

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  • Motor, stator for motor, and motor shell manufacturing method
  • Motor, stator for motor, and motor shell manufacturing method
  • Motor, stator for motor, and motor shell manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] (Structure of motor)

[0058] figure 1 It is a cross-sectional view of main parts of a PM (permanent magnet) type stepping motor to which one embodiment of the present invention is applied.

[0059] figure 2 to represent figure 1 It is an explanatory diagram of the structure of the stator part 3 of the stepping motor 1 shown.

[0060] (composition of motor)

[0061] figure 1 The stepping motor 1 of the present embodiment shown includes: a rotor portion 2 having a rotating shaft 21 and a rotor magnet (permanent magnet) 22; a stator portion 3 disposed opposite to the rotor magnet 22 with a gap; 21 is rotatably supported by bearings 4 . Another bearing (not shown) is provided, for example, near the outlet opening of the first stator core 31 or the opening inside the mounting plate, or at the front end of the rotating shaft 21 through a not-shown housing.

[0062] On the rotating shaft 21 constituting the rotor unit 2 , a rotor magnet 22 is fixed to the rotating sha...

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Abstract

This invention provides a motor capable of attaining size reduction without causing insulation failure of an air-cored coil winding. This stepping motor 1 includes an annular first stator core 31 in which a plurality of pole teeth stand at an inner-periphery edge and an air-cored coil 33 around which the pole teeth are fitted, and an insulation film 50 is formed at a surface of the air-cored coil 33. Because the air-cored coil 33 is roughly annular and simple in its shape, it is possible to uniformly form the insulation film 50 on its surface. Therefore, the insulation film 50 can be formed on the whole surface of the air-cored coil 33 with the prescribed film thickness to reduce cutting or insulation failure.

Description

(1) Technical field [0001] The invention relates to a method for manufacturing a motor, a motor stator and a motor housing. (2) Background technology [0002] In general, a motor such as a stepping motor generally includes: a rotor portion having a magnet fixed to a rotating shaft; a stator portion opposed to the rotor portion; an annular coil bobbin; a bobbin wound around the coil bobbin Coil windings on the body. [0003] In such a stepping motor, in order to realize its miniaturization, for example, if the size of the motor is about 10 mm in diameter, the coil bobbin is integrally formed on the inner stator core constituting the stator part by insert molding to reduce the size of the winding. Spool size. [0004] In addition, when the diameter of the motor size is reduced to about 5 mm, if the coil bobbin is integrally formed on the stator core, the proportion of the coil bobbin will increase. Therefore, there is a problem that the required winding space cannot be ensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K37/14H02K15/02H02K15/14
Inventor 园原宏幸小林刚内海信一
Owner SANKYO SEIKI MFG CO LTD
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