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Motor stator

Active Publication Date: 2013-06-06
LIDASHI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention aims to improve the speed and ease of installation for motor statons. The new design helps to speed up the fabrication process compared to older designs.

Problems solved by technology

In consequence, the operation to wind coils in the wire-winding grooves becomes difficult, and the number of turns of the coils is limited.
Further, it is difficult and takes much time to keep the large number of foot tubes of the two wire racks in alignment for connection during installation.
For making foot tubes having different lengths to fit different stators having different thicknesses, a new injection molding mold shall be used, leading to cost increase.

Method used

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first embodiment

[0029]Referring to FIGS. 1 through 8, a motor stator 10 in accordance with the present invention is shown. The motor stator 10 comprises a body member 11, two wire racks 21, and a plurality of insulation sheets 31.

[0030]The body member 11 is formed of a stack of silicon steel plates. To avoid a blurred vision due to too many lines in the drawing, the body member 11 is illustrated in a block but not in a stack of silicon steel plates. The body member 11 comprises a plurality of inwardly extending polar columns 12, and a wire-winding groove 14 defined between each two adjacent polar columns 12. Further, the body member 11 defines in the axial direction thereof a middle section 111 and two opposing end sections 112 at the two ends of the middle section 111. The middle section 111 has a predetermined height. The end sections 112 have a predetermined height. The diameter of the end wire-winding groove sections 142 of the wire-winding grooves 14 corresponding to the end section portions 1...

second embodiment

[0041]Subject to the characteristic that the wall thickness of the foot tubes 51 reduces gradually in direction toward the distal end, the insulation sheets 61 can easily be inserted into the end wire-winding groove sections 442 of the wire-winding grooves 44 corresponding to the end section portions 412 of the body member 41 and respectively stopped between the stop flanges of the two wire racks. Thus, this second embodiment facilitates rapid installation.

[0042]Other structural features and effects of this second embodiment are as same as the aforesaid first embodiment, and therefore, it is not necessary to go into details.

[0043]Further, it is to be understood that, in the aforesaid two embodiments, the length of the foot tubes 22 can be shorter than the height of the end section portions 112 of the body member 11, as shown in FIG. 12. Thus, the wire racks 21 have their abutment faces 24 respectively abutted against the outer surfaces of the respective end section portions 112 of t...

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Abstract

A motor stator includes a body member having multiple wire-winding grooves that is formed of a stack of silicon steel plates and defines axially a middle section and two end sections, the wire-dinging grooves in the end sections being greater than in the middle section, two wire racks each having foot tubes respectively inserted into the end sections of the body member in the wire-winding grooves beyond the middle section, the foot tubes having an inner diameter not less than the part of the wire-winding grooves corresponding to the middle section, and insulation sheets having a length greater than the height of the middle section of the body member and being respectively set in the wire-winding grooves and the corresponding foot tubes.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to motor stator technology and more particularly, to a motor stator, which has wire-winding grooves thereof configured to provide a usable cross-sectional area much larger than conventional designs.[0003]2. Description of the Related Art[0004]A motor, as shown in FIG. 15, generally comprises a stator and a rotor. The stator, referenced by 80, comprises a body member 81 and two wire racks 86. The body member 81 is formed of a stack of silicon steel plates, comprising a plurality of inwardly extending polar columns (not shown) and a wire-winding groove 84 between each two adjacent polar columns. Each wire rack 86 comprises a plurality of foot tubes 87 respectively inserted into the wire-winding grooves of the body member 81. The foot tubes 87 of one wire rack 86 are respectively connected to the foot tubes 87 of the other wire rack 86, forming a cylindrical insulation wall in each of the wire...

Claims

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Application Information

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IPC IPC(8): H02K3/38
CPCH02K3/522H02K3/325
Inventor LIN, YUNG-YU
Owner LIDASHI IND
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