| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor which can obtain high detection precision by electrostatically shielding a magnetic core with a simple configuration without cost increase. <P>SOLUTION: A current sensor 1 houses, in a case 6, an annular magnetic core 3 in which a gap 2 is formed at a part of a magnetic path, and a circuit board 5 implemented with a magnetic sensing element 4 arranged in the gap 2 of the magnetic core 3. A spring-like clip (metal component) 7 is mounted on the circuit board 5, and the clip 7 is caused to abut with an end face looking at the gap 2 of the magnetic core 3 so that the magnetic core 3 and a ground pattern on the circuit board 5 may have continuity with each other. A guide rail 9 is attached to the inside surface of the case 6, and the circuit board 5 is assembled in the case 6 along the guide rail 9, to be aligned with the magnetic core 3. A guide groove 9a with which the circuit board 5 engages is formed at the guide rail 9, with a guiding-in side end of the guide groove 9a being widened. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
