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Rotor of rotating machinery

A rotor and rotor core technology, applied in synchronous motors with static armatures and rotating magnets, electromechanical devices, magnetic circuit rotating parts, etc., can solve problems such as impracticality, unusable synthetic resin, strength problems, etc. Firm and convenient assembly, firm and reliable fixed connection, to achieve the effect of fixed connection

Inactive Publication Date: 2003-07-30
OPPAMA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, another problem is that when it is necessary to obtain the strength required to support the rotating shaft by lengthening the length of the tapered shaft hole to exceed the lamination thickness of the rotor core and changing the position of the tapered shaft hole in the axial direction, the synthetic Resin cannot be used
In addition, if threads for various heavy parts are machined on such synthetic resins or a fan or the like is mounted using a sleeve connection portion, it will cause a problem of strength as described above, and thus it is not practical.

Method used

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  • Rotor of rotating machinery
  • Rotor of rotating machinery
  • Rotor of rotating machinery

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Embodiment Construction

[0011] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. figure 1 shows the rotor of the rotating machine of the present invention, figure 2 A perspective view of its assembled state. In these figures, number 1 is the rotor core. The rotor core 1 forms part of a permanent magnet generator rotor in an ignition system for an internal combustion engine. The rotor core 1 consists of a lamination of several layers of magnetic metal sheets formed by riveting together sintered magnetic alloy moldings. The rotor core 1 is generally "I"-shaped, and its structure is that the magnetic pole 4 with the magnet 3 is arranged opposite to the counterweight part 5, and the shaft sleeve fitting hole 2 (discussed in detail below) is located between the two. The pole portion 4 has a pair of substantially T-shaped outwardly projecting poles 4a holding the magnet 3 between them at one end of the rotor core. The magnet 3 is su...

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Abstract

A rotor core is provided with a pole piece portion holding a magnet and a balance weight portion, wherein said hub fitting hole is inserted a metal hub having a tapered axis hole and part fitting portion so as to be fixed each other, and said rotor core is coated with synthetic resins, thereby the use of metal can be limited only to parts where mechanical strength is required so that the whole rotor weight can be reduced and can be assembled easily, and be allow various parts can be fitted stably, and the degradation of magnetic properties of the magnet can be prevented.

Description

technical field [0001] The invention relates to a rotor of a permanent magnet generator and a similar structure used in an ignition device of an internal combustion engine, in particular to a rotor with a shaft sleeve in the middle that can cooperate with a rotating shaft such as a crankshaft. Background technique [0002] A rotor of a rotating mechanism such as a permanent magnet generator generally includes a rotor core with a magnetic pole portion on which a magnet is mounted and a balance weight portion, wherein a sleeve is integrally assembled with the rotor core. By injecting molten aluminum into the mold where the rotor core is located, the bushing made of aluminum die-casting for connection to the crankshaft-like rotating shaft is molded integrally with the rotor core. [0003] This rotor with die-cast aluminum bushing has a tapered shaft bore, which ensures an easy and reliable connection between the crankshaft-like rotating shaft and the bushing. The length of the...

Claims

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Application Information

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IPC IPC(8): H02K21/14H02K1/27H02K1/28
CPCH02K1/2773H02K1/28
Inventor 岩田雅夫北村良树大竹茂
Owner OPPAMA IND