| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cheap position detection device suitable for a mass production, maintaining the dimensional accuracy of a holder 4 or the like and protecting a wobble or the breakage of a magnetic field generating body 5 when a vibration is added from an exterior. <P>SOLUTION: The device comprises a first magnetic substance 1 and a second magnetic substance 2 which are arranged with a gap 3 in an opposite position, the holder 4 which is arranged in the gap 3, and the magnetic field generating body 5 fixed on the holding part 4. The magnetic field generating body 5 is set in proximity to the first magnetic substance or the second magnetic substance, so as to increase a magnetic attraction force between the first magnetic substance or the second magnetic substance and the magnetic field generating body. A slide between the slider 9 of a supporting part 8 and the slider 10 of the holder 4 is limited only the magnetic substance side to which the magnetic field generator 5 approaches so as to maintain the dimensional accuracy of a height H1 or the like of the holder 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
