Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
Safety Latch
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Published on September 4, 2011
Description
This is a safety latch designed to secure drawers, cupboard doors, or other furniture to prevent young children from opening them. Commercially there is a wide variety in the design of these latches, however, I've kept this design to it's simplest and most utilitarian form.
This should be printable on most reprap printers. If your printer can't handle the screw holes at the base of the latch then you could fill them solid and screw through the plastic when attaching the latch.
This is a work in progress so I welcome your feedback, improvement, and derivative designs.
This thing was made with Tinkercad.
Edit Part A online at: tinkercad.com/p/acc0011db8cb8e88
Edit Part B online at: tinkercad.com/p/acc0e35af491e43d
This should be printable on most reprap printers. If your printer can't handle the screw holes at the base of the latch then you could fill them solid and screw through the plastic when attaching the latch.
This is a work in progress so I welcome your feedback, improvement, and derivative designs.
This thing was made with Tinkercad.
Edit Part A online at: tinkercad.com/p/acc0011db8cb8e88
Edit Part B online at: tinkercad.com/p/acc0e35af491e43d
Instructions
Print both parts
Use two small wood screws to attach part b to the door/drawer. Take care to align it so the end of the latch has less than 1mm of clearance with the surface of the furniture when the door/drawer is closed.
Use two small wood screws to attach part a to the furniture surface.
When the door/drawer closes the latch should clip shut as part b is secured by part a.
Now to open the door/drawer you will have to flex the latch, young children struggle to do this so you have prevented them from getting access.
Use Caution: Safety latches such as this design are not foolproof, and older children will learn how to open them. So it is important to keep dangerous substances out of reach or locked away.
Use two small wood screws to attach part b to the door/drawer. Take care to align it so the end of the latch has less than 1mm of clearance with the surface of the furniture when the door/drawer is closed.
Use two small wood screws to attach part a to the furniture surface.
When the door/drawer closes the latch should clip shut as part b is secured by part a.
Now to open the door/drawer you will have to flex the latch, young children struggle to do this so you have prevented them from getting access.
Use Caution: Safety latches such as this design are not foolproof, and older children will learn how to open them. So it is important to keep dangerous substances out of reach or locked away.
License
More from Fabricatis
Thanks! Was a drop in replacement for a missing latch.
The angle on the lip is a little sharp, I think it could do with a shallower angle.
Thanks Brendan, I appreciate your feedback.
I've uploaded a new STL file with a 5° shallower angle on the lip, and ensured the top of the lip is at 90° from the base of the latch.
Also, out of interest, did you print this with PLA or ABS filament? And did the screw holes at the base of the latch print okay?
Cheers :)