thang010146 | Scissor-switch keyboard mechanism @thang010146 | Uploaded 1 year ago | Updated 2 days ago
Here a scissor mechanism (blue lower plate, jade transparent upper plate, yellow and green frames) is applied. The two frames are connected together by a revolution joint.
The pink pin is pressed on yellow 3-layer membranes (which is the electrical component of the switch) to close the electrical circuit.
The black spring tends to raise the key. In fact, the spring is replaced by a rubber dome.
This video is made based on:
en.wikipedia.org/wiki/Keyboard_technology