Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Automatic Latching System

by Roach, published

Automatic Latching System by Roach Jan 21, 2013
0 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps


Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

3645Views 357Downloads Found in Parts


I'm attempting to make an automatic latching system for the lid of my heated build chamber.

The goal is to have a mechanism that a handle is pushed into which latches, and unlatches when pushed on again.


It's not pictured, but there would be a rubber band or spring pulling the top of the hook arm to the left.

Please make suggestions or modifications to my design!

I'm kinda stuck here.

More from Parts

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

Hmm, it looks like it needs "funnels" for the pin to indicate direction of motion. For example, on the left side it would probably work better if the bottom path had a large angled inlet.

I think a picture will be in order. I'll try a quick sketch.

It sure does Austin!

I was attempting more of a cam shape, but that failed.

Your illustration is very clear, but makes me wonder how the pin would travel up the right side, assuming gravity is in effect.

I think you need an additionnal spring to route the pin the right way. As far as I remember, such systems always have such little spring.

Roach - in reply to

So, one spring to push to the left, and another to push the cam arm up?

Yes, I think so. Try to find an old car push-button, and open it; you will find such system.

Glad to help!

The drawing was made assuming that some sort of spring or rubber band is pushing the pin towards the left (as you had documented).

I admit that this whole thing has gotten me a bit curious as to how the latches I've used my entire life work. :p
(I've only taken apart and examined pens, which use a similar strategy but different tricks due to the cylindrical setup)

I'm glad it got you curious.

I get that it needs to be pulled to the left, but is there another spring pushing the arm up (Maybe that's what FMA was getting at), so it doesn't fall down from gravity on the right side of the slot you've drawn?

Glad to help!

The drawing was made assuming that there's a spring of some sort forcing the pin to the left (as you had documented for your design).