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Retaining Plastic Parts Within Themselves

IP.com Disclosure Number: IPCOM000046238D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Crowe, WR: AUTHOR

Abstract

Plastic parts have previously required C-clips or other retainers to maintain their position on a supporting shaft. The use of the clips and retainers may be eliminated by molding the plastic part and forming the shaft that it is to be mounted on to provide the retaining function.

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Retaining Plastic Parts Within Themselves

Plastic parts have previously required C-clips or other retainers to maintain their position on a supporting shaft. The use of the clips and retainers may be eliminated by molding the plastic part and forming the shaft that it is to be mounted on to provide the retaining function.

Referring to the figures, stub shaft 10 is formed with an annular groove 12 near the end thereof. The plastic part 14 is molded with retaining fingers 16 formed on the end thereof. The profile of the fingers will act to locate the part relative to the annular groove 12. The plastic part 14 may be automatically inserted by means of a mechanized assembly apparatus merely by pushing the part 14 over the shaft 12 and allowing the fingers 16 to grip the groove 12. The slope on the outward portion of the groove aids in reacting with the fingers 16 to cause the part 14 to position itself properly along the axis of shaft 12.

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