Insulation Bobbin of a Stator

a stator and bobbin technology, applied in the direction of transformers/inductance coils/windings/connections, basic electric elements, electrical apparatus, etc., can solve the problems of reducing the structural strength of extension members and allowing extension members b>92/b> to be easily damaged

Inactive Publication Date: 2012-03-29
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]It is therefore the primary objective of this invention to overcome the above conventional insulation bobbin by providing an insulation bobbin of a stator that has a larger room for radial windings.
[0009]The invention discloses an insulation bobbin of a stator includes a body and a plurality of extension members. The body has an assembly hole and the extension members are coupled to the body. Each of the extension members has a wound portion. The wound portion has a top plate and two side walls located on two sides of the top plate. A thickness of the top plate is smaller than that of the two side walls.
[0010]Furthermore, the invention discloses an insulation bobbin unit of a stator including a first insulation bobbin and a second insulation bobbin. The first insulation bobbin has a first body and a plurality of first extension members coupled with the first body. The first body has a first assembly hole. Each of the extension members has a first wound portion. The first wound portion has a first top plate and at least one first side wall located on two sides of the top plate. A thickness of the first top plate is smaller than that of the at least one first side wall. The second insulation bobbin has a second body and a plurality of second extension members. The second body is coupled with the first body and has a second assembly hole aligning and communicating with the first assembly hole. The second extension members are coupled with the second body and aligned with the first extension members. Each of the second extension members has a second wound portion. The second wound portion has a second top plate and at least one second side wall located on two sides of the top plate. A room is defined by the first top plate, the first side wall, the second top plate and the second side wall.

Problems solved by technology

In light of this problem, the thickness of the extension member 92 may be reduced to increase the number of turns of the metallic coil C. However, this reduces the structural strength of the extension members 92, causing the extension members 92 to be easily damaged during assembling and winding processes.

Method used

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  • Insulation Bobbin of a Stator
  • Insulation Bobbin of a Stator
  • Insulation Bobbin of a Stator

Examples

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first embodiment

[0020]Referring to FIGS. 3 and 4, a single insulation bobbin of a stator of a motor is shown according to the invention. The insulation bobbin includes a body 1 and a plurality of extension members 2. The extension members 2, with equal distance, may be formed on an outer wall of the body 1 in an integral manner.

[0021]The body 1 is made of insulation material such as plastic. The body 1 has an assembly hole 11 extending in an axial direction so that the insulation bobbin may be fitted through the assembly hole 11 onto an outer circumferential wall of a bearing of the motor.

[0022]Each extension member 2 has a connection end 21, a free end 22, a wound portion 23, an accommodation room 24, two stop walls 25 and a standing wall 26. The connection end 21 and the free end 22 are respectively located on two ends of the extension member 2. The connection end 21 is connected to the body 1. The free end 22 has a wider width than the connection end 21 so that the extension member 2 resembles a...

second embodiment

[0027]In the second embodiment, the first body 1′ may be aligned and coupled with the second body 1″ to allow communication between the first assembly hole 11′ and the second assembly hole 11″. Based on this, the first and second insulation bobbins may be fitted onto a circumferential wall of a bearing of the motor through the first assembly hole 11′ and the second assembly hole 11″. In addition, the first extension members 2′ may be aligned and coupled with the second extension members 2″ to allow communication between the first accommodation room 24′ and the second accommodation room 24″, in which bottom faces of the two first stop walls 25′ abut against top faces of the two second stop walls 25″.

[0028]Particularly, referring to FIG. 6, taking the first wound portion 23′ and the second wound portion 23″ as an example, a thickness T3 of the first top plate 231′ may be smaller than a thickness T4 of the first side wall 232′, or a thickness T5 of the second top plate 231″ may be smal...

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Abstract

An insulation bobbin of a stator includes a body and a plurality of extension members. The body has an assembly hole and the extension members are coupled to the body. Each of the extension members has a wound portion. The wound portion has a top plate and two side walls located on two sides of the top plate. A thickness of the top plate is smaller than that of the two side walls.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention generally relates to an insulation bobbin of a stator and, more particularly, to an insulation bobbin of a stator that provides a larger room for radial windings.[0003]2. Description of the Related Art[0004]Referring to FIG. 1, Taiwanese Patent No. 525869 discloses a conventional insulation bobbin 9 of a stator of a DC motor. The insulation bobbin 9 includes a body 91 and a plurality of extension members 92. The body 91 includes a hole 911 from which the extension members 92 extend outwards radially. Each extension member 92 has an accommodation room 921 whose cross section resembles a “□” shape. The accommodation room 921 has an opening and two protruding clamp 922 located on two edges of the opening.[0005]When the insulation bobbin 9 is coupled with a silicon steel plate unit 8, the accommodation rooms 921 may accommodate a plurality of salient-poles 81 of the silicon steel plate unit 8, in which...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01F27/32
CPCH02K3/34H01F27/325
Inventor HORNG, ALEX
Owner SUNONWEALTH ELECTRIC MACHINE IND
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