| 摘要 |
A microswitch includes two coaxial columnar permanent magnets having poles of the same polarity facing one another or poles of different polarities facing one another, defining an air gap therebetween. The permanent magnets generate magnetic fields defining a boundary region. A magnetic field sensor, which may or may not be chip-like, is disposed in the boundary region and is fixedly disposed in the air gap, optionally in the axial direction in the air gap. A switch device is connected to the magnetic field sensor and has a switching status varying in accordance with magnetic induction at the magnetic field sensor.
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