Abstract: An electrical connector comprising an end portion of a flat circuit device which forms a connectively engaging protrusion on which a plurality of contacting terminals are arranged and a supporting board portion for supporting the connectively engaging protrusion, and first and second conductive shells having respectively first and second plate portions opposite to each other with the supporting board portion between, wherein the first conductive shell is attached to the supporting board portion with the first plate portion thereof covering directly a first surface of the supporting board portion and the second conductive shell is attached also to the supporting board portion with the second plate portion thereof covering directly a second surface opposite to the first surface of the supporting board portion, so as to hold the connectively engaging protrusion supported with the supporting board portion for causing the same to engage with a mating electrical connector.

Abstract: A signal transmission medium inserted in a connector main body portion, which can be held and released successfully with a simple configuration, is disclosed. A distal end portion of an elastically-displaceable cantilever-shaped locking arm member formed so as to be integral with a board connection leg portion (holddown) is provided with a locking portion engaged with a portion of the signal transmission medium inserted in the connector main body portion to hold the inserted state. The held state of the signal transmission medium is maintained by elastic action of the locking arm member extending in a relatively-elongated shape from a swinging fulcrum. Simultaneously, an unlocking-action force on the locking portion can be reduced, and an unlocking-operation force is stably received by the board connection leg portion (holddown) fixed to a printed circuit board so that improvement in strength is achieved.

Abstract: An electrical connector comprising an end portion of a flat circuit device which forms a connectively engaging protrusion on which a plurality of contacting terminals are arranged and a supporting board portion for supporting the connectively engaging protrusion, and first and second conductive shells having respectively first and second plate portions opposite to each other with the supporting board portion between, wherein the first conductive shell is attached to the supporting board portion with the first plate portion thereof covering directly a first surface of the supporting board portion and the second conductive shell is attached also to the supporting board portion with the second plate portion thereof covering directly a second surface opposite to the first surface of the supporting board portion, so that the first and second conductive shells are operative to hold the connectively engaging protrusion supported with the supporting board portion for causing the same to engage with a mating electrica