| 摘要 |
PROBLEM TO BE SOLVED: To provide a contactless switch capable of stabilizing a detection accuracy and reducing size. SOLUTION: The contactless switch 1 includes: a magnetic filed detecting sensor 12; a terminal base 5 provided with the magnetic filed detecting sensor 12; an operating member 4 disposed with a magnet 7 to be detected by the magnetic filed detecting sensor 12; a holder 3 coupled to the terminal base 5 and slidably holding the operating member 4 with respect to the magnetic filed detecting sensor 12; and a switch body 2 accommodating the holder 3, the operating member 4 held thereby, and a part of the terminal base 5, wherein the magnet 7 is arranged to form two magnetic fields spaced by a predetermined distance around an axial center of the operating member 4, and the magnetic field detecting sensor 12 outputs a detection signal when the sensor detects a reversal position of magnetic flux on a center line at which the two fields that the magnet 7 forms overlap each other. COPYRIGHT: (C)2011,JPO&INPIT |
