초록 ▼

A system for distributing electrical power to side edges (108, 112) of a daughter card (102) upon insertion into a card cage (10) includes a pair of source and return bus bars (118, 116) mounted on at least one of the side edges and electrically connected by arrays of terminals (172) to power circui

A system for distributing electrical power to side edges (108, 112) of a daughter card (102) upon insertion into a card cage (10) includes a pair of source and return bus bars (118, 116) mounted on at least one of the side edges and electrically connected by arrays of terminals (172) to power circuits of the card, insulated by a cover (120) having a rail (126) for following the guide channels (18, 20) of the card cage at each card location. Rearward ends of the bus bars have blades (122, 124) which are received into receptacle contacts (46, 44) mounted in the card cage above and below the backplane (14), which are mounted at each card location and electrically connected to source and return busses (68, 58) of the card cage. The receptacle contacts (46, 44) are float mounted to be easily incrementally moved upon blade receipt during card module (100) insertion, and also easily incrementally moved after blade mating when power connections are established, to then permit precision adjustment of rear card edge (104) in two dimensions so that card edge connectors (106) thereon become aligned with corresponding backplane connectors (16) for subsequent high density signal terminal mating.

대표청구항 ▼

A system for distributing electrical power to daughter cards of a card cage, the card cage having a framework, a backplane, and a card-receiving region forwardly of the backplane including upper and lower card guides at each card location extending from the entrance to the card-receiving region to t

A system for distributing electrical power to daughter cards of a card cage, the card cage having a framework, a backplane, and a card-receiving region forwardly of the backplane including upper and lower card guides at each card location extending from the entrance to the card-receiving region to the backplane at the inwardmost portion of the region, and including electrical connectors on the backplane at each card location matable with corresponding card edge connectors on the rearward edge of a daughter card upon full insertion of the card into the card cage along the card guides, each daughter card including thereon electrical and electronic components requiring electrical power and signal and power circuit means extending from at least one card edge to at least some of the components, comprising: a card cage having a card-receiving region defined by framework and having a backplane disposed at an inwardmost portion of said region, and at least one daughter card receivable into said card-receiving region of said i card cage at one of a plurality of card locations; means for bussing power to said card locations in said card cage proximate said inwardmost portion of said card-receiving region thereof and defining source and return power paths of said cage; contact means mounted to said card cage framework at each said card location at said inwardmost portion and electrically connected thereat to said bussing means, said contact means including contact sections exposed along said inwardmost portion of the card-receiving region for distributing power to a said daughter card inserted into said card cage at a said card location; and power bus means mounted on each said daughter cad and electrically connected to contact areas of power circuit means of said card, said power bus means including bus contact sections matable with said contact sections of said card cage contact means to establish electrical connections between said card and said card cage bussing means; each said power bus means being at least two bus members defining source and return power paths respectively of said card, each said bus member being mounted along one of an upper and a lower edge of said daughter card, each said bus member including a said bus contact section extending rearward of said rearward card cage and said card edge connectors mounted therealong to become mated with corresponding said contact means of said card cage connected to an appropriate one of said source and return power paths of said cage power bussing means, and each said bus member including a plurality of card-engaging terminals for transmitting power to said card contact means proximate said respective card edge; each said power bus means including an insulating means thereover defining a rail cooperable with a channel of a respective guide of said card cage framework at each said card location for guiding said daughter card therealong in cooperation with another rail along the other of said upper and lower card edges in the opposed guide, for at least substantially aligning said corresponding connectors on said rearward card edge with said electrical connectors on said backplane to be mated upon full card insertion; and said contact means of said card cage being mounted therein in a manner permitting incremental positional adjustment upon initial engagement by a respective said bus member contact means which may not be precisely aligned wherewith, and in a manner permitting incremental positional adjustment after contact mating upon said daughter card being incrementally repositioned upon positional adjustment during mating of said card edge connector means with said backplane connector means, without generating substantial resistance to said daughter card positional adjustment.