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One-way torque limiter?

One-way torque limiter?

One-way torque limiter?

(OP)
Hi,

I would like to know if exist a "one way torque limiter".
Basically I'm looking for something that fully engage in
one direction while disengage with torque friction in the other direction.

Thanks


 

RE: One-way torque limiter?

'mechanical diode', known in the past as ratchet.  Another instance of melding mechanical with electrical terms.

Ted

RE: One-way torque limiter?

(OP)
Hi Kirrer,

Thanks for the info. It looks interesting. Just to understand your suggestion. Do you meant that I should combine to element (clutch + Mechanical diode) by myself? I would prefer one single item that I can buy from the shelf.

Thanks
Ciao

RE: One-way torque limiter?

There's also the wrap-spring clutch:

http://www.idicb.com/wrapclbk.htm

A variation of this is what is often used on bicycles  with coaster brakes (as GregLocock mentioned), except that the wrap spring is internal and forced to expand against a drum instead of being wrapped around the shaft as on the above site.   

Engineering is not the science behind building.  It is the science behind not building.   

RE: One-way torque limiter?

Hi Ciao,

sorry, I did not fully answer your question. Yes, I would use a combination of a one-way clutch (off-the-shelf) and torque limiter (off-the-shelf) which together would serve both functions; but the suggestions after mine may lead to simpler products. I haven't had the task of finding what you're looking for, so I was just offering different examples of one-way couplings (which do not have the torque limiting function).  

RE: One-way torque limiter?

Centrifugal clutch??

RE: One-way torque limiter?

Yeah, the bicycle application. This is a one way bearing with a brake when the moment is reversed at the axial. Recently seen one developed by my colleges, worked like a charm right out of the box.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

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