Hall effect sensor with a protective support device

Details Hall effect sensor with a protective support device Hall effect sensor with a protective support device

1991-02-27

1992-06-30

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

32420725, 123617, G01B 730, F02P 700, G01P 344

Patent

active

051266636

ABSTRACT:
A Hall effect type sensing device comprising a casing (20); a magnet (22), a first magnetic flux guide (21a) and a second magnetic flux guide (21b) which define a magnetic circuit; a Hall transducer (24) arranged to be opposite to the magnet (22) in the magnetic circuit; a board (23) for supporting the Hall transducer (24); an air gap formed between the magnet (22) and the Hall transducer (24); a magnetic flux shutter (5) which can shunt a magnetic flux in the air gap, and which passes through the air gap to cause a change in the magnetic flux, the change being detected by the Hall transducer (24); and an urging member (30) including a supporting arm (30a) for supporting a Hall IC assembly and an urging arm (30b) for urging the supporting arm (30a) to an inner wall of the casing (20), the Hall IC assembly being constituted by the second magnetic flux guide (21b), the Hall transducer (24) and the board (23); wherein the Hall IC assembly is located by an urging force of the urging member (30).

REFERENCES:
patent: 4235213 (1980-11-01), Jellissen
patent: 5014005 (1991-05-01), Murata et al.
"Designs of semiconducting magnetic field sensors" by W. Heidenrich in Technisches Messen tm 56 (1989) 11, S. 436-443.
"Harnessing the Hall effect for today's technology" by Douglas White in Sensor Review Apr. 1989 S. 91-94.
"Funktion und Anwendung der Hall-Magnet-Gabelschranke HKZ101" by Ulrich Lachmann in Siemens Components 20 (1982) Heft 3, S. 73-75.

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