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Molded motor

A motor and molding technology, applied in the field of motors, can solve the problems of high price, mold complexity, cost rise, etc., and achieve the effect of reliable maintenance, good handling and easy fixing

Inactive Publication Date: 2010-12-29
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in order to form the structure for fixing the thermal protector to the stator mold, the mold for stator molding is complicated and expensive.
Therefore, it is necessary to install a dedicated part for the thermal protector, and in this case, the cost will increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (shape of sensor holder)

[0066] according to figure 2 The sensor holder 11 includes an accommodating portion 13 for accommodating the wiring board 12 and a main body portion 14 for mounting on the stator 1 , and is formed in an arc shape corresponding to the shape of the stator 1 . The storage portion 13 is disposed on the inner peripheral side of the main body portion 14 , and the circumferential length of the storage portion 13 is formed longer than the circumferential length of the main body portion 14 .

[0067] The position sensor 15 is disposed in the storage portion 13 , and the wiring board 12 corresponding to the shape of the storage portion 13 is housed therein. The stored wiring board 12 is fixed by screwing, and the wiring board 12 and the position sensor 15 are protected by covering the interior of the housing portion 13 with a potting resin.

[0068] according to image 3 , the outer peripheral surface of the housing portion 13 is in contact with the...

Embodiment 2

[0078] Such as Image 6 As shown, a temperature protection element 21 is installed on the sensor bracket 11, and the temperature protection element 21 is used to detect the temperature of the stator 1 and protect the stator 1 from abnormal temperature. In addition, an element housing portion 22 is formed to hold the temperature protection element 21 .

[0079] The element housing portion 22 opens to the main body portion 14 of the sensor holder 11 , and a guide portion 23 is formed in the opening portion. The elastic force is obtained by forming the thickness of the guide portion 23 to be about 1 mm, thereby obtaining the holding force of the temperature protection element 21 . Furthermore, the bottom of the guide portion 23 is open, and heat from the stator can be reliably detected. Also, a plurality of protrusions 24 are formed on the side wall of the guide portion 23 so as to press the upper side of the temperature protection element 21 .

[0080] In addition, a pluralit...

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PUM

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Abstract

The invention provides a molded motor which solves the following problem of a large motor used for a washing machine: in installing a position sensor on an end surface of a stator by screwing, screwing can be performed only on the yoke side and mounting strength is not sufficient. The molded motor, in which the stator 1 of the motor is covered with resin except a tooth tip thereof and the portion covered with resin is cylindrical, is configured so that a protrusion 6 is integrally formed at a resin frame 3 of the stator 1 and the vicinities of both ends in the peripheral direction of a storage portion 13 of a sensor holder 11 are latched by the protrusion 6.

Description

technical field [0001] The present invention relates to relatively large-sized electric motors used in places with a lot of humidity, such as washing machines. Background technique [0002] Conventionally, there is known a molded motor in which a stator winding is covered with a resin member. (refer to patent document 1) [0003] In the case of a molded motor used in an air conditioner or the like as in the above patent document, the wiring board is integrally molded by resin, but in the case of a larger motor such as a washing machine, etc., the wiring board is integrally molded with the motor. When manufacturing a wiring board, there is a problem that the wiring board or electronic components arranged on the wiring board are damaged due to resin pressure during molding. Also, the wiring board cannot be replaced. [0004] In view of the above-mentioned problems, it is known in the past that an arc-shaped wiring board mounted with a position sensor is embedded in the stor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/06
Inventor 中泽悦雄平井拓朗
Owner NIDEC CORP
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