Precision Gap Magnetic Encode Device

Details Precision Gap Magnetic Encode Device Precision Gap Magnetic Encode Device

1989-03-31

1990-09-25

Wong, Peter S.

Electrical generator or motor structure

Dynamoelectric

Rotary

1562757, 310 42, 32420713, H02K 1500, H02K 526

Patent

active

049595741

ABSTRACT:
A magnetic rotary encoder device wherein fluctuation of a magnetic gap arising from a change in temperature is minimized, a printed circuit board on which an electric circuit electrically connected to a magnetic sensor is carried can be assembled readily, and a magnetic gap can be adjusted readily. The magnetic encoder device comprises a magnetic scale having thereon a magnetic code which can be detected by a magnetic sensor, a retaining member for securely retaining the magnetic sensor on a sensor mounting element with a magnetic gap left between the magnetic scale and the magnetic sensor, and a supporting member to which the retaining member is secured. A first bonding agent and a second, softer bonding agent secure the supporting member and portions of the sensor mounting element adjacent and remote from the supporting member to each other, respectively.

REFERENCES:
patent: 4377088 (1983-03-01), Evert
patent: 4694688 (1987-09-01), Takahashi et al.
patent: 4731580 (1988-03-01), Indo
patent: 4737675 (1988-04-01), Maemine et al.

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