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Browse Prior Art Database

Frame Structure With Expansive Spring Pinned Fittings

IP.com Disclosure Number: IPCOM000091025D
Original Publication Date: 1969-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Baldwin, GE: AUTHOR [+2]

Abstract

A frame structure, especially a computer frame, is required which can be easily assembled after shipment and which can be easily altered, if necessary. It is also necessary that a good contact be made between joints in the frame to meet electrical and magnetic requirements. Members 12 and fittings 14 are preplated before shipping. The assembling of members 12 and fittings 14 in the structural frames must not affect the plating or introduce any structural distortion.

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Frame Structure With Expansive Spring Pinned Fittings

A frame structure, especially a computer frame, is required which can be easily assembled after shipment and which can be easily altered, if necessary. It is also necessary that a good contact be made between joints in the frame to meet electrical and magnetic requirements. Members 12 and fittings 14 are preplated before shipping. The assembling of members 12 and fittings 14 in the structural frames must not affect the plating or introduce any structural distortion.

Tubular members 12 are predrilled with holes 16 of a predetermined size and location so as to correspond to smaller holes 18 located in fittings 14. The latter consist of smaller diameter fitting extensions 20 of a small enough diameter to fit into members 12. Extensions 20 are slotted in such a manner that slots 22 go through openings 18 drilled in them. A slot 22 is lengthwise of extension 20 so that if a member is expanded in the hole in it, extension 20 is expanded by causing the slot 22 to grow larger.

Extension 20 is inserted into member 12 and the predrilled holes 16 and 18 are aligned. Members 12 and 14 are connected together by inserting spring pin 24 which is hammered into the aligned openings. Pin 24 provides sufficient force on openings 18 in the extended portion 20 of fitting 14 to cause the part on either side of slot 22 to be pushed away and thus make a press fit within member 12.

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