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Fail-Safe Clip for Printed Circuit Board Stiffener

IP.com Disclosure Number: IPCOM000038942D
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Cook, LG: AUTHOR [+4]

Abstract

An improved stiffener for printed circuit boards (PCBs) used in semiconductor devices utilizes replaceable connector guide/retaining clips. The newly designed stiffener is glued to the front of the PCB leaving easy access to both sides of the board for repair. The clips, should they break, may be easily replaced without replacing the entire stif fener as in previous designs. In conventional stiffeners which were bonded to the PCB, cross members of the stiffener were removed to provide necessary wire clearance. This resulted in a board without adequate stiffness and which was difficult to maintain. The alignment clips, which were integrally molded as part of the stiffeners, could be easily damaged necessitating considerable repair to the assembly.

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Fail-Safe Clip for Printed Circuit Board Stiffener

An improved stiffener for printed circuit boards (PCBs) used in semiconductor devices utilizes replaceable connector guide/retaining clips. The newly designed stiffener is glued to the front of the PCB leaving easy access to both sides of the board for repair. The clips, should they break, may be easily replaced without replacing the entire stif fener as in previous designs. In conventional stiffeners which were bonded to the PCB, cross members of the stiffener were removed to provide necessary wire clearance. This resulted in a board without adequate stiffness and which was difficult to maintain. The alignment clips, which were integrally molded as part of the stiffeners, could be easily damaged necessitating considerable repair to the assembly. The newly designed stiffener is bonded to the front side of the board, but could also be part of a molded board. It is designed to both enhance the strength of the board and provide guidance while being substantially stronger than the clip 2. Since the clip 2 is a separate item, it may be designed using the most desirable material, thereby serving as a fail-safe link to the board. The clip has a retention tang 3 and a cantilever latch 4. The tang fits into the respective recess 5 of the card stiffener while the cammed detent of the latch permits location and locking of the clip into the respective slot 6 of the stiffener. Since the clip may be made of a material with app...