Non-contact rotary movement sensor provided with independent...

Details Non-contact rotary movement sensor provided with independent... Non-contact rotary movement sensor provided with independent...

2008-04-01

2008-04-01

Barrera, Ramon M. (Department: 2832)

Electricity: measuring and testing

Magnetic

Displacement

C324S207200, C324S207140, C335S205000, C335S206000, C335S207000

Reexamination Certificate

active

07352174

ABSTRACT:
It is an object of the present invention to provide a non-contact rotary movement sensor capable of, by making magnetic fields from a plurality of permanent magnets not mutually affected, independently implementing an output signal and a switching signal using the same. It is another object of the present invention to provide a non-contact rotary movement sensor provided with an independent switch which outputs an output signal by using a permanent magnet and a Hall device and outputs a switching signal using a contact switch. The non-contact rotary movement sensor with an independent switch includes: a rotating body, provided with a first permanent magnet installed on an upper part, a key slot installed on a lower part, and a second permanent magnet installed on a trigger which is projected on a part of an external circumference, for being rotatably driven by an external force, wherein the first permanent magnet and the second permanent magnet are installed not to be affected by mutual magnetic fields; and a printed circuit board provided with at least one Hall device for outputting a linear output signal by detecting a direction change of a magnetic field of the first permanent magnet and at least one lead switch for outputting a switching signal by detecting a strength change of a magnetic field of the second permanent magnet.

REFERENCES:
patent: 6597168 (2003-07-01), Lee
patent: 10-0504106 (2005-07-01), None
patent: 10-0458375 (2005-11-01), None

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