Circular ratchet mechanism

Blue plate can be positioned at various positions during the ascent
thanks to yellow pawl, red tension spring and the gravity.
Thanks to the interaction between the green pin and the jade runway:
- At the highest position of the blue plate, the pawl is separated from the pink rack.
- At the lowest position of the blue plate, the pawl is brought into contact with the rack.
The spring generates a counterclockwise torque to the pawl when the plate goes up.
The spring generates a clockwise torque to the pawl when the plate goes down.
To get higher position of the plate: raise it to the desired position.
To get lower position of the plate: move it as high as possible, then move it down as
low as possible and raise it to the desired position.
STEP files of this video:
www.mediafire.com/file/yg4lp7...
Inventor files of this video:
www.mediafire.com/file/77h9mu...

[@SantiagoItzcoatl]

I've been in love with your channel for many years! It has become a corner stone reference.

[@EitriBrokkr]

I agree, I wish there was some convenient way to organize them. To find different mechanisms

[@thang010146]

Categorized list of my TH-cam videos:
3200 ANIMATED MECHANICAL MECHANISMS
www.mediafire.com/file/muio0i3hyvnhtj6/3200AMMe.zip/file

[@EitriBrokkr]

@@thang010146 thank you

[@TomasSab3D]

Beautiful. Awesome. Thank you for doing these :)

[@cadewallace20111]

I love mechanisms that utilize an over-center action.

[@mattw7949]

Love it!

[@facts_react]

Amazing performance, i liked all as type innovation

[@pedrofranciscomoralesriver6470]

Muy ingenioso, con freno para subir gradualmente., liberado para bajar. Muchas aplicaciones.

[@crystal8870]

Thank you for sharing . Is there a way that you can show us - what keeps the ratchet up on a way back?

[@thang010146]

Use your hand to raise the blue plate (clockwise rotation).
The gravity rotates the blue plate counterclockwise.

[@crystal8870]

@@thang010146 Sorry, Thang - I don't mean to sound stupid. I mean the spring ( yellow ) component. What locks it in a top position and disengages it from the gear, once it has reached the top?

[@RunnerPack]

@@crystal8870 The red spring keeps the yellow pawl in one of two positions. The shape of the cutout in the light blue outer casing has a sloped area at each end. These slopes act as ramps that push the green pin either toward (bottom) or away from (top) the teeth of the ratchet. I hope that helps!

[@crystal8870]

@@RunnerPack How did I miss that 🙈!!! Thank you🙂

[@mazzikoba6348]

드디어 찾았다

[@Dunstanw08]

is there a way to design something like this but for a 180 degree ROM

[@thang010146]

Add a flat helical spring that tends to rotate the blue plate counterclockwise.

[@PCLye]

Good for what applications?

[@thang010146]

For an adjustable cover or table.

[@minercraftal]

Chairs?

[@neiljborja]

Foot operated parking brake found in many cars

[@user-lz2ec1kl3g]

Can I get This 3D Modeling, Please?

[@thang010146]

Links to download CAD files of this video have been added to the video description recently.