Motor for driving

A technology of motors and integrated circuits, applied in the field of driving motors for washing machines, can solve problems such as insufficient installation accuracy, achieve the effect of improving accuracy and preventing the decline of positioning accuracy

Active Publication Date: 2009-04-01
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, if the number of poles of the rotor increases, the numerical value of the mechanical angle per electrical angle becomes smaller in proportion to the number of poles. If the allowable electrical angle is constant, the mechanical angle becomes smaller. Therefore, it is necessary to greatly increase the The mounting accuracy of the Hall IC bracket that detects the magnetic poles, but the mounting accuracy is not sufficient

Method used

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Embodiment Construction

[0039] Hereinafter, examples related to the embodiment of the present invention will be described using the drawings.

[0040] figure 1 It is a longitudinal sectional view of a drum type washing and drying machine.

[0041] The outer frame case has an outer frame 1 and a base portion 2 on which the outer frame 1 is placed and supported.

[0042] In addition, there is also a configuration in which an outer-frame housing is formed with only the outer frame 1 without the base portion 2 .

[0043] The outer frame 1 has an openable and closable cover 3 provided in the center of the front.

[0044] A resin-molded outer tub 4 is arranged inside the outer frame 1 , and a rotatable rotary drum 5 is arranged in the outer tub 4 . The rotary drum 5 is directly connected to a driving motor 7 via a main shaft 6 . The drive motor 7 is fixed to a metal flange 8 , and the metal flange 8 is fixed to the tub 4 . At the time of assembly, the rotating drum 5 is attached to the outer tub 4 aft...

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Abstract

The present invention relates to a driving motor. The problem to be settled is that the value of mechanical angle of each electrical angle diminishes proportionally to polar number. The mechanical angle diminishes if the allowed electrical angel is certain. Thererfore the installation accuracy of bracket of Hall integrated circuit which is used for detecting magnetic pole requires to be greatly increased, but simultaneously the installation accuracy is not sufficient. The Hall integrated circuit bracket installing structure according to the invention is divided to an installation mechanism executed with mounting screws, a first positioning mechanism which is installed at the same circumference at the periphery side of stator iron, and a second positioning mechanism which is installed at the front of teech part of stator iron.

Description

technical field [0001] The present invention relates to a motor technology in which a Hall IC bracket mounted with a Hall IC for detecting a magnetic pole position of a rotor is mounted on a stator with high precision in a driving motor, and particularly relates to a driving motor for a washing machine. Background technique [0002] As a positioning means of the Hall IC for detecting the magnetic pole position of the rotor, a positioning means of providing a concave portion on the bobbin of the resin-molded stator is known (Patent Document 1: Japanese Patent Application Laid-Open No. 11-234998 ) 1. A positioning scheme for fixing a Hall integrated circuit bracket in a mounting hole provided on a coil bobbin of a stator (patent document 2: Japanese Patent Application Laid-Open No. 2002-10576). [0003] Since the driving motor that drives the rotary drum of the washing machine directly drives the rotary drum, a large driving torque is required. Therefore, the outer dimensions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00H02K29/08H02K21/02
Inventor 成田博文大川友弘丰田荣治坂本国弘
Owner HITACHI APPLIANCES INC
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