Jack with a switch

Claim 1

A jack with a switch, comprising: a rectangular hollow body of an insulating material having a front face, a rear face, and an interior, said body having an opening at said rear face and a plug insertion sleeve molded integrally on said front face extending forward from said front face, said sleeve having a plug insertion hole communicating with the interior of said hollow body for receiving a plug wherein said plug insertion hole has an axis; a regulating rib molded integrally with the interior of said hollow body for limiting inclination of a plug that is inserted into said plug insertion hole, said regulating rib extending from an inner surface of said front face of said body toward said rear opening of said body; an L-shaped lug of metal inserted into said body through said rear opening thereof, said lug having a horizontal plate portion disposed in said body parallel to the axis of said plug insertion hole and a vertical plate portion disposed in said body opposite said rear opening, said horizontal plate portion having a tip contact piece formed integrally therewith and extending rearwardly therefrom, said tip contact piece having a hole for receiving said regulating rib; a ring contact piece and a grounding contact piece inserted into said body through said rear opening thereof and disposed radially opposite to said tip contact piece relative to a plug that is inserted into said plug insertion hole; a separator formed of an insulating material disposed between said ring contact piece and said tip contact piece, said separator having a base portion adjacent said vertical plate portion of said lug said base portion having two forwardly directed legs such that said base portion is U-shaped wherein a tip of said plug is received between said legs, at least one movable piece extending from one of said legs of said base portion toward said sleeve and displaceable in a direction perpendicular to the axis of said plug insertion hole, and a support arm molded integrally with said base portion and extending toward said sleeve for receiving a side portion of a plug that is inserted into said plug insertion hole; at least one pair of leaf and plate contact pieces inserted into said body through said rear opening thereof and disposed opposite said at least one movable piece, said leaf and plate contact pieces being subject to ON-OFF control by displacement of said movable piece resulting from insertion and removal of said plug into and out of said plug insertion hole; a rectangular cover, having a hinge portion that is molded integrally with said body adjacent said rear opening, for closing said rear opening of said body; and locking means formed on said cover and said body adjacent said rear opening, for locking said cover to said body when said rear opening of said body is closed by said cover.