Abstract: Provided is a wire-to-board connector including a plug attached to a wire, and a receptacle mounted on a circuit board. The plug and the receptacle are formed of metal. The plug is fitted into the receptacle to electrically connect the wire to the circuit board. The receptacle has an accommodating portion formed in a tubular shape. The plug has an inserted portion to be inserted into the accommodating portion of the receptacle. The inserted portion includes a body plate and an elastic piece elastically supported in a cantilevered manner by the body plate. The elastic piece of the inserted portion has a free end. The accommodating portion has an engaged portion. When the inserted portion is inserted into the accommodating portion, the free end engages with the engaged portion along with an elastic deformation of the elastic piece, thereby allowing the plug to be fitted into the receptacle.

Abstract: Provided is a connector that can be firmly mounted on the substrate. A plug connector is mounted on a plug substrate while making a metal plate function as a plurality of contacts by an insulting layer formed on the metal plate and a plurality of conductive patterns formed on the insulating layer. A plurality of protrusions that protrude toward the plug substrate are formed on a substrate opposing surface, which is a surface opposite to the plug substrate. The plurality of conductive patterns are formed to respectively overlap the plurality of protrusions.

Abstract: A connector includes a contact, a housing having a cavity into which the contact may be inserted formed therein, the housing retaining the contact inserted into the cavity, and a retainer piece that may be inserted into the cavity in the direction opposite to an insertion direction. The housing includes a pressing piece that moves the contact inserted into the cavity in the moving direction substantially perpendicular to the insertion direction, an abut part that the contact abuts due to the movement by the pressing piece, and a locking member that locks the contact abutted to the abut part. The retainer piece is inserted into a back-side gap formed between the contact and an inner wall surface of the housing due to the movement by the pressing piece.