Title:
CURRENT DETECTOR
Document Type and Number:
Japanese Patent JP2019113570
Kind Code:
A
Abstract:
To provide a technique for preventing a change of output characteristics due to short-term temperature changes and a long-term aging degradation.SOLUTION: A current detector comprises: a magnetic core 110 in which a hall element used in detecting a current to be detected is arranged in a gap; a resin case 102 the inside of which is filled with a filler 106 while the magnetic core 110 is accommodated together with the hall element; and an adhesive 140 interposed between the resin case 102 and the magnetic core 110, for restricting the deformation of the magnetic core 110 that accompanies the expansion/contraction of the gap in the resin case 102. The adhesive 140 is arranged between the gap and the resin case 102 at positions within a range 90 degrees from the position of the gap in the circumferential direction of the annular magnetic core 110.SELECTED DRAWING: Figure 2
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Inventors:
TATSUZUE HIROSHI
Application Number:
JP2019080904A
Publication Date:
July 11, 2019
Filing Date:
April 22, 2019
Export Citation:
Assignee:
TAMURA SEISAKUSHO KK
International Classes:
G01R15/20
Domestic Patent References:
| JP2013140140A | 2013-07-18 | |||
| JP2004101384A | 2004-04-02 | |||
| JP2012037351A | 2012-02-23 |
Foreign References:
| WO2014087350A1 | 2014-06-12 |
Attorney, Agent or Firm:
Takahiro Yamazaki