Fraud protection for smart card connector
View Patent ↗A smart card connector with a signal blade contact ( 22 a , FIG. 5 ) and a ground blade contact ( 22 b ), wherein the signal blade contact has a signal tail ( 34 a ) at the rear end of the connector frame, and wherein the connector is provided with a shield structure ( 110 ) that prevents a person from fraudulently contacting the signal tail during use of the connector. The shield structure includes an insulative barrier ( 60 ) with a hole ( 76 ) through which the signal tail extends, and also includes a sheet metal shield ( 40 ) with a rear portion that extends largely around the signal tail to ground any conductor that is fraudulently inserted against the signal tail. The sheet metal shield has a transverse tongue ( 54 ) that extends to and engages the ground blade contact. The insulative barrier has a slot that extends largely around the signal tail, and the sheet metal rear shield portion lies in the slot.
1. A smart card connector for receiving a fully installed smart card, said connector having an insulative connector frame with a frame face that lies facewise adjacent to a smart card that has been fully installed, and said connector having a plurality of transversely spaced blade contacts with card-engaging parts that project vertically beyond said frame face for engaging contact pads of the smart card, wherein the connector is mounted on a circuit board that has at least one signal trace and at least one ground trace, and wherein a first of said blade contacts is a signal contact that has a rear end forming a signal tail that lies at a rear end of said frame and that is connected to one of said signal traces, and a second of said blade contacts is a ground contact with a rear end forming a ground tail that is connected to said ground trace, comprising:
a shield structure mounted on said connector, said shield structure having a rear part that lies rearward of said signal tail to block the unauthorized projection of a conductor device from the rear of said connector against said signal tail;
said shield structure includes a metal shield with a metal rearward portion that forms part of said rear shield portion;
said metal shield having a tongue that directly contacts said ground blade contact; said rear end of said frame being adjacent to rear end of the installed smart card.
2. The smart card connector described in claim 1 wherein:
said metal rearward portion of said metal shield has a primarily vertical part and has a lower end that lies against said ground trace on said circuit board; and
said shield structure includes an insulative barrier with a rear portion that lies rearward of said metal rearward shield portion and facewise adjacent to said circuit board.
3. The smart card connector described in claim 1 wherein:
said insulative connector frame has a bottom with an upwardly-opening frame cavity therein:
said shield structure includes an insulative barrier that fits into said frame cavity, said insulative barrier having a barrier cavity, and said metal shield lies in said barrier cavity.
4. The smart card connector described in claim 1 wherein said first of said contacts is in the form of a bent elongated strip and includes an elongated primarily horizontal portion that extends rearward to said signal tail, and wherein:
said metal shield is formed of sheet metal and said rear shield portion includes walls lying on transversely opposite sides of said signal tail, and said metal shield also includes an elongated sheet metal strip portion that extends forwardly from said rear shield portion and directly under said first contact elongated horizontal portion.
5. The smart card connector described in claim 1 wherein:
said shield structure includes an insulative barrier with a vertical hole, said signal tail extends through said hole;
said insulative barrier also has a slot that extends most of the way around said hole, said rear structure of said metal shield lies in said slot and extends most of the way around said hole.
6. A smart card connector for receiving a smart card, said connector having an insulative connector frame with a frame face that lies facewise adjacent to a smart card that has been fully installed, and said connector having a plurality of contacts with card-engaging parts that project vertically beyond said frame face for engaging contact pads of the smart card, wherein the connector is designed to lie on a circuit board that has at least one signal trace and at least one ground trace, and wherein a first of said contacts is a signal contact that has a rear end forming a signal tail that lies at a rear end of said frame and that has a lower branch for connected to one of said signal traces, including:
a shield structure mounted on said connector, said shield structure including an insulative barrier and a sheet metal shield;
said insulative barrier having a portion with a hole and said signal tail extends down through said hole with said lower branch of said signal tail lying at the bottom of said hole, said hole has a vertical axis and said insulative barrier has a slot that extends more than 180° about said hole;
said sheet metal shield lies in said slot and extends more than 180° about said hole.
7. The smart card connector described in claim 6 wherein:
a second of said contacts is positioned to connect to said ground trace;
said sheet metal shield is directly connected to said second contact.