Magnetic tilt sensor having a magnetic body arranged on the ceiling portion of the case.

摘要

There is proposed a tilt sensor in which a permanent magnet (3) having a surface coated with a magnetic fluid (4) is housed in a hollow portion of a nonmagnetic case (11), a magnetic sensing element (7) is disposed outside a bottom portion of the case for detecting the movement of the magnet and a magnetic body (10) is arranged on the ceiling portion (14) of a nonmagnetic case to compensate adverse influences due to magnetic attraction between the permanent magnet and the magnetic sensing element.