Methods for assembling and adjusting a magnetic encoder device

Details Methods for assembling and adjusting a magnetic encoder device Methods for assembling and adjusting a magnetic encoder device

1990-06-07

1992-01-21

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

296021, 324202, H01F 706

Patent

active

050817566

ABSTRACT:
Methods are provided for assembling a magnetic encoder wherein fluctuation of a magnetic gap arising from a change in temperature is minimized. The magnetic encoder comprises a magnetic scale having thereon a magnetic pattern which can be detected by a magnetic sensor, a sensor retainer for securely retaining the magnetic sensor with a magnetic gap left between the magnetic scale and the magnetic sensor, and a supporting member to which the sensor retainer is secured.
According to the invention, a jig is affixed to a surface of the sensor retainer, and the jig is moved until the gap between the magnetic scale and the magnetic sensor reaches a predetermined width. The sensor retainer may be secured to a supporting member by first and second securing agents, the second securing agent being the harder and applied closer to the magnetic sensor than the first securing agent.

REFERENCES:
patent: 4231150 (1980-11-01), Brooks
patent: 4944028 (1990-07-01), Iijima et al.

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