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Magnet embedded motor, rotor unit and producing method of rotor unit

An embedded motor and rotor unit technology, which is applied in the direction of magnetic circuit rotating parts, machines/engines, magnetic circuit shape/style/structure, etc. The effect of less man-hours and lower costs

Inactive Publication Date: 2006-10-18
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the method of the above-mentioned conventional example, due to the increase in the number of parts and the complexity of the structure, whether it causes the assembly process to become complicated or requires bonding There is still room for improvement in this regard, since the application of adhesive, (magnet) insertion and positioning, and a large number of processes such as hardening hinder the cost reduction of the magnet assembly process.

Method used

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  • Magnet embedded motor, rotor unit and producing method of rotor unit
  • Magnet embedded motor, rotor unit and producing method of rotor unit
  • Magnet embedded motor, rotor unit and producing method of rotor unit

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Embodiment Construction

[0066] Hereinafter, an embodiment in which the present invention is embodied in a magnet-embedded motor for a pump device (water pump) will be described with reference to the drawings.

[0067] Such as figure 1 As shown, the motor 50 of this embodiment is an embedded magnet (IPM: Interior Parmanent Magnet) type motor having a rotor 10 in which a plurality of magnets 2 are embedded. A stator 52 having three-phase (U, V, W) motor coils (not shown in the figure) is provided outside the motor 10 , and a rotating magnetic field is formed around the rotor 10 by energizing each motor coil. In addition, the rotor 10 is rotated by the relationship between the field magnetic flux of the magnet 2 and the above-mentioned rotating magnetic field.

[0068] Such as figure 2 As shown, the rotor 10 has a yoke 1 that forms a magnetic flux path for the magnets 2 , and magnet insertion holes 4 for inserting the magnets 2 are formed in the same yoke 1 . In addition, in the present embodiment, ...

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Abstract

The present invention provides a permanent magnets embedded type motor which is easily attached, and attains a low cost effectively.The motor includes a rotor in which a plurality of permanent magnets are embedded, and the rotor is integrally molded with resin by insert molding (injection molding) using each permanent magnet and a yoke as inserting materials.

Description

technical field [0001] The present invention relates to an embedded magnet motor, a rotor of an inner rotor type brushless motor, particularly a rotor unit including a rotating body rotated by the rotor, and a method for producing the rotor unit. Background technique [0002] Conventionally, among the rotating field motors having a magnet as a magnetic field source on the rotor side, there is an embedded magnet motor in which the magnet is embedded in the rotor. And, as the fixing structure of the magnet of such embedded magnet type motor, it is known that a fixing spring is provided in a magnet insertion hole formed on the rotor, and then the magnet is fixed by its elastic force (for example, refer to Patent Document 1 ), or apply an adhesive (adhesive mainly composed of silicon-based resin, etc.) on the magnet and stick it in the magnet insertion hole (for example, refer to Patent Document 2). [0003] In addition, for example, Patent Document 3 described below describes ...

Claims

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Application Information

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IPC IPC(8): H02K1/27
CPCF05D2240/303
Inventor 岩濑昌吾石黑干久寺山充樋口匡
Owner AISIN SEIKI KK