GB1521004A - E electric switches - Google Patents

Abstract

1521004 Two-part electrical connectors E MARQUARDT J MARQUARDT H MARQUARDT and E MARQUARDT 25 June 1976 [26 June 1975 24 Dec 1975] 26607/76 Heading H2E An electric switch includes a housing with openings for receiving electric leads and an electrical connection comprising an electric lead having a recess in an end portion thereof and a spring within the housing having a ridge transverse to the direction of reception of the leads and engaging in the recess. The recess may be formed directly in the conductor of the lead and the spring may be moved independently of the reception of the lead. In an embodiment, Fig. 4, the transverse ridge 4 of spring 5 presses against either one of the recesses 3 of end 2 to give an electrical contact between the leads 1 and the sides 11 of a screw socket terminal 18. The recesses may be diametrically opposed or annular. In another embodiment the terminal is replaced by a U-shape contact (11, Fig. 3, not shown) with both limbs of the U in contact with ends 2, one of the limbs having a protrusion (17) for a recess 3. Another variant makes contact to a single lead (Figs. 1 and 2, not shown). A different form of end piece 23, Fig. 5, may be used having holes 28, 29 for receiving one part of the ridge which is divided into three parts (46, 47, 48, Fig. 6, not shown). The edges 40, 41, of the holes are chamfered at different angles to accommodate the ridge more accurately. The outer parts of the ridge are used in conjunction with an end piece having two pairs of notches (Fig. 7, not shown). Alternatively the ridge is sufficiently narrow to enter wholly the aperture in the end piece (Fig. 8, not shown). Another embodiment (Fig. 9, not shown) has the end-piece turned on its side and having two notches on opposite sides, one (70) for the ridge (57) of the spring and another (68) for a detent in the housing floor.