Browse Prior Art Database

Card Cassette Alignment and Ejector Systems

IP.com Disclosure Number: IPCOM000061011D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Dosio, AE: AUTHOR

Abstract

A simple and economic insertion mechanism is coupled with a critical alignment tool for high density packaging of cards adapted to be mounted on a board. Referring to Fig. 1, two adjustable ejectors 11 and 13 are used to load and unload all cassettes from a cassette-holding mechanism 14. The ejectors are not part of the cassette, which in turn reduces the cost and complexity of the cassette. The mechanism shown in Fig. 1 includes support rods 15 and 17 and a stiffener 19 for the plastic cassette 21. A lock mechanism 23 maintains the cassette in position prior to ejection. Fig. 2 illustrates a self-aligning plastic cassette 21 with a high density guide pin receptacle connector 25.

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Card Cassette Alignment and Ejector Systems

A simple and economic insertion mechanism is coupled with a critical alignment tool for high density packaging of cards adapted to be mounted on a board. Referring to Fig. 1, two adjustable ejectors 11 and 13 are used to load and unload all cassettes from a cassette-holding mechanism 14. The ejectors are not part of the cassette, which in turn reduces the cost and complexity of the cassette. The mechanism shown in Fig. 1 includes support rods 15 and 17 and a stiffener 19 for the plastic cassette 21. A lock mechanism 23 maintains the cassette in position prior to ejection. Fig. 2 illustrates a self-aligning plastic cassette 21 with a high density guide pin receptacle connector 25. Alignment guides 27 comprising indentations and protrusions on the cassette provide rough alignment until the cassette reaches guide pins 28 in receptacle guide holders 29 built in the cassette wall, as shown. Guide pins 28 on guide pin receptacle connectors 25 are mounted on a mother board (not shown). Receptacle connector 25, which is part of the cassette assembly, engages the two guide pins 28 and allows for accurate alignment when the ejector seats cassettes with associated connectors in the home position. The side and guide pin alignment eliminates the need for guide rails, usually mounted on the top and bottom of the card assembly which, in turn, blocks passage of the air used for cooling.

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