Oven Door Latch

thingiverse

This project came of necessity. One day I found my 15 month old granddaughter opening the oven door. The oven is a split design with the oven on the bottom and the grill (smaller oven) on top. It is built-in to the kitchen base units. The latch is installed on the lower edge of the top oven door with the slide piece sitting below the top of the main oven door. Rotating the top piece of the latch lifts the slide to allow the oven door to open. Releasing the top piece lets the slide drop back into its locked position. When the oven door is closed again the slide rides up over the top of the door and locks behind it. For times when the oven door is frequently opened and closed, rotating the top of the latch fully clockwise locks the slide in the released position. Future versions will have an interlock to prevent the child from turning the top of the latch fully clockwise without pressing a button on the side. The latch is stuck to the top oven door with strong double-sided tape or even glued into position. My prototype has been installed for several weeks now and my granddaughter is yet to dislodge it or open the door. Instructions Print (best quality) the base, slide, plate, top, pin and retainer. Carefully sand the slide, pin, retainer, top and bottom to make them smooth. Put the slide in the slot in the base. Install the spring. Glue the plate into position above the slide. The plate fixes in three location, along each side and the pin in the middle. Glue carefully so as not to get the slide stuck. Here's where there is some variation in the current design to the parts above. In this version it is necessary to glue the Pin to the Top. The best way to do this is to put the pin into the base and apply glue to the top of the pin. Lower the top into position but don't push it all the way down. Leave for a while for the glue to set. Future versions will have the pin included as part of the top. When the pin is firmly set, push the top down to leave about 0.5mm clearance to the base. Glue the retainer to the pin on the underside of the base and leave to set. Finally stick the latch to the oven door as shown in the pictures.