One-way centrifugal clutch - seatbelt clutch

[humv3]

Hello everyone,

I'm new to the forum here and have a question that is probably fairly easy for engineers to answer.

I'm searching for a clutch that provides the same functionality as a seat belt clutch, i.e. it rotates both directions at slow rpms but when pulled quickly in ONLY one of those directions, the clutch engages and doesn't allow rotation.

I think the correct term would be a one-way centrifugal clutch, which is like the one pictured here, http://www.craftsmanshipmuseum.com/images/clen9.jpg" , but I'm not sure if there is a common clutch used in practice that accomplishes this.

I'm trying to replicate everything the seat belt clutch does but the clutch in my project will spin much faster than a seat belt clutch does, so the normal seat belt clutch won't work. Is there a common name for this type of clutch and can it be purchased?

Thanks for your help. I'm waiting to see if someone who practices in this area will know a special term or easy answer to my problem.

 

[Achy47]

Hello there,

Thank you for your question! It sounds like you are looking for a one-way centrifugal clutch, also known as a one-way sprag clutch. This type of clutch allows for rotation in one direction at slow speeds, but engages and locks in the other direction when a certain threshold of speed is reached.

One-way centrifugal clutches are commonly used in various applications such as lawn mowers, go-karts, and industrial machinery. They can be purchased from various manufacturers and suppliers, both online and in stores.

I hope this helps with your project. Good luck!