interlocking mechanisms
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Re: interlocking mechanisms
Re: interlocking mechanisms -- rarvind	Post Reply	Top of thread	Forum

Posted by: zekeman ® 01/11/2006, 17:00:05 Author Profile eMail author Edit

Your description is not clear. If you want some help, send a sketch of your setup.

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Re: interlocking mechanisms
Re: Re: interlocking mechanisms -- zekeman	Post Reply	Top of thread	Forum

Posted by: rarvind ® 01/11/2006, 23:32:23 Author Profile eMail author Edit

Hiii thanks a lot for your response ... sorry im unable to attach the file its like i have a hollow cylindrical element which is flexible and expandable diametrically. the purpose is to design an interlock where in the cylindrical element locks it self in the expanded position and does not contract back to the original dimension . request your inputs please .... regards arvind

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Re: interlocking mechanisms
Re: Re: interlocking mechanisms -- rarvind	Post Reply	Top of thread	Forum

Posted by: zekeman ® 01/12/2006, 09:51:15 Author Profile eMail author Edit

Can you make the outer surface a sawtooth that would engage another on the fixed cylindrical "stop" in a ratchetlike fashion? Look at a tywrap mechanism for some insight on this. Or more simply, if you could put a pin protusion on the end of the piece and when it expands it would fall into a hole in the mating stop. Hope this will give you a starting point.

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Re: interlocking mechanisms
Re: Re: interlocking mechanisms -- zekeman	Post Reply	Top of thread	Forum

Posted by: rarvind ® 01/16/2006, 00:11:12 Author Profile eMail author Edit

Thanks for the reply well the main problem is the hollow cylindrical element is a polyurethane material ... which engages on expansion into another rubber material and hence the idea of a saw tooth mechanism or any friction type concept will not be very effective i guess .... and also i cannot make any depressions or projections onto the outer cylinder ...... again a major constraint .. n thats why i wanted to figure out whether i can incorporate any mechanism which enables the inner cylinder to lock when expanded ...... im free to make some arms or struts onto the inner cylinder which can support any kind of a mechanism ..... request your inputs ......

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Re: interlocking mechanisms
Re: Re: interlocking mechanisms -- rarvind	Post Reply	Top of thread	Forum

Posted by: Yates ® 01/18/2006, 07:46:59 Author Profile eMail author Edit

Does your device need to transmit torque ? Are you looking for a permanent interlock or rather one which engages and disengages as a function of direction of rotation or torque transmitted, or both ?

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Re: interlocking mechanisms
Re: Re: interlocking mechanisms -- Yates	Post Reply	Top of thread	Forum

Posted by: rarvind ® 01/18/2006, 08:55:35 Author Profile eMail author Edit

thanks for your reply well the basic purpose is to lock itself in its expanded position ... there is no transmission or motion of either flexible cylinders ..... its just that the smaller cylinder has to keep the outer cylinder open ... Regards

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