Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1994-01-11
1995-05-23
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200 11DA, 200 11TW, 200292, H01H 1954, H01H 900
Patent
active
054183413
ABSTRACT:
In an incremental encoder, a common terminal which is required always to be electrically connected to a rotary contact plate comprises a plurality of sliding contacts each having a contact point with the rotary contact plate. Respective sliding contacts are positioned so as to come into contact with the rotary contact plate with a positional shift angle. Due to this feature, even in the case where the common terminal is in contact with a signal pulse-generating region of the rotary contact plate having slits formed therein for generating the signal pulse, it is possible that a portion of at least one of the contact points provided on the plurality of sliding contacts is always in contact with the rotary contact plate. Accordingly, a common contact region which is required in a conventional incremental encoder is not necessary, whereby the miniaturization of the incremental encoder can be realized. As far as the common terminal is modified so as to be always in contact with the rotary contact plate, the same advantage can be obtained.
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Matsushita Electric - Industrial Co., Ltd.
Scott J. R.
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