Low profile socket connector

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing from having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, resilient biassing means protruding into the socket resiliently for engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a direction in its plane into a predetermined reference position in the base member;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• means for securing the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween;
• a cover member stamped and formed from a single piece of sheet metal and comprising a rectangular, plate-like, resilient frame portion having opposite side walls and opposite end walls, inner edge portions of which overhang corresponding walls of the base member to extend over the socket and are formed with a plurality of protuberances extending at spaced apart locations from a lower face thereof, into the socket;
• a plurality of key-hole type mounting apertures having wide entry points communicating with narrow slot-like retention portions formed in the cover member,
• the securing means comprising stud-like members each having shanks extending from cover member retaining heads;
• whereby the cover member can be located on the base member in a first position in which the heads are freely received in the respective entry portions of the mounting apertures and, subsequently, urged along the base member in a sliding action, parallel to the circuit board, to a second, fastening position in which the shanks are received in the retention portions and the protuberances engage an upper face of an LGA device in the socket with flexure of the cover plate, the resiliency thereof pressing the LGA device against the interface connecting device.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land area of the LGA device exposed to the lower face, mounting sockets extending through the frame between upper and lower faces thereof;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• a cover member for mounting on the upper face of the base member;
• and,
• means for securing the cover member and the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween, the securing means comprising an outer member and an inner member, the outer member having a shank formed with an internal, axially extending passageway and, at one end, with a plurality of axially extending, resilient legs and the inner member including a shank, the outer member being mountable in the base member mounting sockets with the legs received in an aperture in the circuit board, and the inner member being mountable in the outer member for movement from a first position in which the shank is partially received in the passageway to a second, anchoring position in which the shank is fully received in the passageway with a free end thereof spreading the legs radially apart into anchoring engagement with the circuit board.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face,
• an interface pressure connecting device comprising an elastomer connector positionable between a lower face of the LGA device and a circuit board;
• elastomer connector retaining means comprising a plurality of retaining pins integrally formed with at least one wall of the lower face of the base member and extending downwardly therefrom into penetrating engagement with the elastomer connector at spaced apart locations thereof for retaining the interface pressure connector device thereon prior to assembly with a circuit board;
• and,
• means for securing the cover member and the base member to the circuit board with the interface pressure connecting device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• frictional retention means provided for the base member adjacent the lower face thereof for retaining the interface pressure connecting device thereon prior to assembly with a circuit board;
• and,
• means for securing the cover member and the base member to the circuit board with the interface pressure connecting device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing fame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper ad lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, resilient biassing means protruding into the socket resiliently for engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a direction in its plane into a predetermined reference position the base member;
• an interface pressure connecting device comprising an elastomer connector for location between a lower face of the LGA device and a circuit board;
• an elastomer connector retaining means comprises a plurality of retaining pins integrally formed with at least one wall of the lower face of the base member and extending downwardly therefrom into penetrating engagement with the elastomer connector at spaced apart locations thereof;
• and,
• means for securing the base member to the circuit board with the elastomer connector pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member made in one piece of plastic and comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, resilient biassing means comprising at least one beam spring member integrally formed with at least one inner edge portion of a rigid wall of the base member frame protruding into the socket resiliently for engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a coplanar direction into a predetermined reference position in the base member;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• and,
• means for securing the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member made in one piece of plastic and comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, resilient biassing means comprising two beam spring members integrally formed with an denting from respective adjacent inner edge portions of one pair of adjacent rigid walls at a location adjacent one corner of the housing frame and bowing into the socket for resilient engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a coplanar direction against a corner of the housing frame diametrically opposite to the one corner into a predetermined reference position in the base member;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• and,
• means for securing the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting for LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, one pair of adjacent walls being rigid and having inner surfaces for abutment with one corner of the LGA device, the entire inner surface being rigid, and defining a predetermined reference position, resilient biassing means provided on another wall and protruding into the socket for resilient engagement with at least one side edge portion of the LGA device remote from the one corner to bias the LGA device laterally, in a direction in its plane so that the one corner abuts the inner surface, in the predetermined reference position;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• and,
• means for securing the base member to the circuit board with the elastomer connector pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, resilient biassing means protruding into the socket resiliently for engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a direction in its plane into a predetermined reference position in the base member;
• an interface pressure connecting device comprising an elastomer connector for location between a lower face of the LGA device and a circuit board;
• an elastomeric connector retaining means including elastomer connector receiving recesses, opening to the lower face, formed in respective opposite walls of the base member adjacent a lower face thereof for retaining the elastomer connector thereon prior to assembly with a circuit board;
• and,
• means for securing the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.

A low profile socket connector for mounting an LGA device on a circuit board comprising:

• a base member comprising a rectangular housing frame having upper and lower faces and opposite side walls and opposite end walls defining between them a socket opening to the upper and lower faces for freely receiving the LGA device in substantially coplanar relation therein with the contact land array of the LGA device exposed to the lower face, one pair of adjacent walls being rigid and having rigid inner surface portions extending for their entire length and defining a predetermined reference position for the LGA device in the base member, resilient biassing means carried by at least one other wall and protruding into the socket resiliently for engagement with at least one side edge portion of the LGA device to bias the LGA device laterally, in a direction in its plane into engagement with said inner surface portions and thereby into the predetermined reference position in the base member;
• an interface pressure connecting device positionable between a lower face of the LGA device and a circuit board;
• and,
• means for securing the base member to the circuit board with the interface device pressed between respective contact lands of the LGA device and conductive pads of the circuit board to establish electrical connection therebetween.