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Plastic Design - Click Feature

Plastic Design - Click Feature

Plastic Design - Click Feature

(OP)
We currently have a plastic display that rotates on a 3 pin bayonet system. The bayonets are toleranced at +/- 0.15mm and the display is toleranced at 0.2mm.  The display has small bumps that the bayonets go over to create a click feel.  Unfortuately with the current stack-up we either have no click feature or to much.  Does someone else have an elegent way of creating a click feature in plastic?

RE: Plastic Design - Click Feature

Some plastics vendors will help you design these kind of things, back in the UK I remember http://www.mckechnie-plastics.co.uk/html/contact.htm mentioned they did this when I was working with them on something else.

What plastic process are you using?

forum712: -Plastics Engineering might get you good answers.
 

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RE: Plastic Design - Click Feature

(OP)
Injection molding.

RE: Plastic Design - Click Feature

Snap fits and ratchets have been designed with the flexible member being a tapered beam and stresses in the elastic range. Some calcs are necessary.

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