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Title:
ROTATION SENSOR
Document Type and Number:
Japanese Patent JPH0566227
Kind Code:
A
Abstract:

PURPOSE: To obtain an inexpensive waterproof type rotation sensor, which is ready to manufacture and utilized as a wheel-speed sensor and the like.

CONSTITUTION: A magnet 5, a magnetic pole 6, a coil 8 which is wound around a bobbin 7, a yoke 9 and a terminal 10 for outputting signals are the functional parts of a sensor and coated and fixed with a first resin layer (epoxy resin 1) which can be molded at low pressure. The first resin layer, the end part of an output line 11 and the tip part of the magnetic pole 6 which is not covered with the first resin layer are covered with a second resin layer (nylon resin 2) as a whole. The sealing protection of the functional parts of the sensor is provided with the layers whose main bodies are the resins. Therefore, an expensive stainless steel housing and laser welding for fixing the housing and the magnetic pole in an airtight manner are not required, the manufacturing cost is decreased and the productivity is improved.


Inventors:
SUGIMOTO MASASHI
HAYASHI TAKAZO
Application Number:
JP1991000227233
Publication Date:
March 19, 1993
Filing Date:
September 06, 1991
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
B60T8/171; B60T8/00; G01P3/488; (IPC1-7): B60T8/00; G01P3/488
Attorney, Agent or Firm:
鎌田 文二 (外2名)



 
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