Contact mechanism of electrical contact pieces

Details Contact mechanism of electrical contact pieces Contact mechanism of electrical contact pieces

1986-04-07

1987-10-13

Scott, J. R.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Contact composition or structure

200241, 335200, H01H 118

Patent

active

047001623

ABSTRACT:
In a contact mechanism having electrical contact pieces in a switching device integrated with a spring plate fixed at one end, a wiping movable contact piece is fixed to the other end of the spring plate and has a semispherical shape at the contact portion, and a fixed contact piece also has a semispherical shape at its contact with a movable contact piece. The level of the apex of the contact area of the movable contact piece is shifted toward the support point side of the movable contact piece from the level of the apex of the contact area of the fixed contact piece. Conversely, the level of the apex of the contact area of the fixed contact piece is shifted toward the lower base stand side from the level of the apex of the apex if the contact area of the movable contact piece. As a result, the movable contact piece can surely and easily contact and separate from the fixed contact piece, and the movement of the movable contact piece in sliding is improved.

REFERENCES:
patent: 1748219 (1930-02-01), Hanel
patent: 2290489 (1942-07-01), Nelsen et al.
patent: 2292497 (1942-08-01), Vradenburgh
patent: 2943170 (1960-06-01), Vradenburgh
patent: 3731240 (1973-05-01), Meyer
patent: 4003011 (1977-01-01), Hayden
"How to Choose and Use Relays", published by Ohm Co., Ltd. (translation), Hans Saver et al., 8-31-76, pp. 15-36.

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