Terminal for high-voltage variable resistor

Details Terminal for high-voltage variable resistor Terminal for high-voltage variable resistor

1993-11-29

1996-07-02

Lateef, Marvin M.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338 70, 338273, 338276, 338219, 411519, 411522, H01C 102, H01C 1300

Patent

active

055326692

ABSTRACT:
A high-voltage variable resistor includes a terminal fitment having an increased number of edge elements while being simplified in structure and down-sized. A circuit substrate which includes a circuit pattern having a plurality of electrodes and resistor elements formed thereon is received in a substrate receiving section of an insulating casing. The insulating casing is charged with insulating resin through an opening thereof to form an insulating resin layer on a rear surface of the circuit substrate. Terminal fitments are provided each of which includes a core holding section provided with three or more edge elements biting into a periphery of a core of a lead wire inserted thereinto. The edge elements each are formed between each adjacent two of three or more slits formed at a plate-like section of the terminal fitment so as to radially extend from a center thereof. The edge element, when a core of a lead wire is inserted through the edge elements into the terminal fitment, are forcibly inclined in a direction of insertion of the core, so that application of drawing force to the lead wire permits the edge elements to bite into the core. The edge elements each are formed into a triangle shape, resulting in having a pointed distal end. An increase in the number of edge elements is accomplished by increasing the number of slits.

REFERENCES:
patent: 913024 (1909-02-01), Meacham
patent: 2616733 (1952-11-01), Strange
patent: 3182367 (1965-05-01), Hamann et al.
patent: 3619478 (1971-11-01), Staiger
patent: 3796124 (1974-03-01), Crosa
patent: 4402037 (1983-08-01), Iwamura et al.
patent: 4471339 (1984-09-01), Fukada et al.
patent: 4834603 (1989-05-01), Holton
patent: 5278535 (1994-01-01), Xu et al.
JP Utility Model Laid-Open Publication No. 86786/1981.

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