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Motor and pump having magnetic sensor, connecting method between circuit board having magnetic sensor and stator, and manufacturing method of motor and pump

A circuit board and stator technology, applied in the manufacture of pumps, pumps that circulate water, and the field of motor vehicles, can solve problems such as water leakage, loss, and damage to the Hall element 9a

Inactive Publication Date: 2007-10-31
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the bottom 4a of the thinner design may be damaged by water pressure, so that water leaks from the pump chamber 2
[0007] On the other hand, when the bottom 4a is designed to have a thickness large enough to prevent water leakage, the distance between the rotor magnet 7a and the Hall element 9a also becomes large, thereby impairing the ability of the Hall element 9a to detect the magnetic pole of the rotor magnet 7a. positional capabilities
As a result, a possible problem is that the rotation of the impeller 7 cannot be adequately controlled
[0008] In addition, since the Hall element 9a is connected to the circuit board 9 by soldering, the vibration of the circuit board 9 conducted from the pump 1 may damage the Hall element 9a.
The pump 1 is unreliable since there is no measure against the damage problem of the Hall element 9a

Method used

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  • Motor and pump having magnetic sensor, connecting method between circuit board having magnetic sensor and stator, and manufacturing method of motor and pump
  • Motor and pump having magnetic sensor, connecting method between circuit board having magnetic sensor and stator, and manufacturing method of motor and pump
  • Motor and pump having magnetic sensor, connecting method between circuit board having magnetic sensor and stator, and manufacturing method of motor and pump

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Embodiment Construction

[0026]

[0027] A first preferred embodiment of the pump according to the invention will be described below with reference to FIG. 1 . FIG. 1 is a schematic cross-sectional view of a pump 1 . It should be noted that in the description of the preferred embodiments herein, terms such as up, down, left, right, up, down, top, and bottom used to describe the positional relationship and direction between the corresponding parts refer only to those shown in the drawings. position and direction. These terms do not refer to the positional relationship and orientation of components mounted in an actual device. And it should be noted that the reference numerals, figure numbers and supplementary explanations presented below are used to help readers find corresponding components in the description of the following preferred embodiments, so as to facilitate understanding of the present invention. It should be understood that these expressions in no way limit the scope of the present inv...

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Abstract

A motor includes a sensor holder that is integral with an annular ring of an insulator of a stator. At least a portion of a Hall element is accommodated in the sensor holder. By virtue of such configuration, a position of the Hall element with respect to the stator will be determined with precision.

Description

technical field [0001] The present invention relates to a motor having a magnetic sensor as means for detecting the position of a magnetic pole, and a pump for circulating water. In particular, the invention applies to motor vehicles equipped with a hybrid engine for circulating water. The invention also relates to a connection method between a circuit board with a magnetic sensor and a stator. The invention also relates to a method of manufacturing an electric machine using the connection method. The invention also relates to a method of manufacturing the pump. Background technique [0002] In recent years, in order to improve the fuel efficiency of motor vehicles, the application of a hybrid engine on which an electric motor and an engine are loaded as actuators has been developed. As a result of this development, various electrical devices used in actuators have also been developed. Specifically, in a hybrid engine, the battery used therein is a key component. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K3/34H02K3/18H02K11/00F04D25/06H02K15/10H02K15/095H02K15/02
CPCH02K29/08H02K7/14H02K5/128H02K11/0021H02K1/146H02K11/215
Inventor 藤居义雄滨岸宪一郎
Owner NIDEC CORP
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