Electricity: measuring and testing – Magnetic – Displacement
Patent
1991-12-13
1992-09-15
Wieder, Kenneth A.
Electricity: measuring and testing
Magnetic
Displacement
374174, 374262, 73519, G01B 730, G01P 3488
Patent
active
051481057
ABSTRACT:
An electromagnetic rotation sensor for detecting a rotational speed of a rotating member includes a sensor portion and a connector portion which are molded of a resin to provide a resin-molded structure. The resin-molded structure is received in a cover, with the connector portion extending outwardly from the cover through a sensor portion-positioning hole formed through a wall of the cover. In order to prevent a positional displacement of the sensor portion with respect to a detection gear, connected to the rotating member, when fixedly mounting the cover on the resin-molded structure, a primary molded portion is molded to provide the sensor portion, and then the primary molded portion is inserted into the cover, and then a secondary molded portion is molded to form the connector portion on the primary molded portion in such a manner that a peripheral edge portion of the sensor portion-positioning hole is fixedly held between the primary molded portion and the secondary molded portion. With this arrangement, the cover can be fixed to the sensor portion and the connector portion without the need for compressive deformation or the like of the cover.
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patent: 4847557 (1989-07-01), Saito et al.
patent: 4888551 (1989-12-01), Hata et al.
patent: 4901562 (1990-02-01), Beakas et al.
patent: 4904936 (1990-02-01), Richmond
patent: 4954775 (1990-09-01), Richmond
Edmonds W. S.
Shindengen Electric Manufacturing Co. Ltd.
Wieder Kenneth A.
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