Hall-effect sensor with component positioning element for detect

Details Hall-effect sensor with component positioning element for detect Hall-effect sensor with component positioning element for detect

1990-03-08

1991-05-07

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

1231465A, 123617, 324174, 310 70R, G01B 730, F02P 700, G01P 344

Patent

active

050140051

ABSTRACT:
An assembling structure of a Hall-effect sensor device suitable to be used as a crankshaft angle sensor of an automotive internal combustion engine is disclosed. The device comprises: a frame of a resin material which includes a box-shaped accommodating portion opening downward, and a magnetic flux guide holder opposing a side wall of the accommodating portion across a predetermined gap through which a magnetic shutter passes; a Hall IC disposed within the accommodating portion of the frame; a position determining means--such as a resilient member functioning with positioning planar surface portions formed on the interior surfaces of the accommodating portion of the frame, or a holder plate made of a press-formed stainless steel plate having a plurality of engaging projections or claws--for determining the relative position of the Hall IC with respect to the frame; a first magnetic flux guide disposed in the accommodating portion of the frame; a second magnetic flux guide held by the magnetic flux guide holder of the frame; and a permanent magnet adhered to the second magnetic flux guide so as to oppose the Hall IC across the predetermined gap through which the magnetic flux shutter is translated to cause the variation of the magnetic flux that passes through the Hall IC.

REFERENCES:
patent: 4011476 (1977-03-01), Beard
patent: 4165726 (1979-08-01), Helmer, Jr.
patent: 4235213 (1980-11-01), Jellissen
patent: 4359978 (1982-11-01), Brammer et al.
patent: 4635353 (1987-01-01), Tamagne
patent: 4771240 (1988-09-01), Meyer et al.

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