The thin photoelectric mechanical keyboard switch includes a PCB plate 1, a base 2, and a keycap 3, but the base 2 has a first receiving groove 21, a second receiving groove 22, and a circumferential groove 23 ) Is opened, a balance table 4 is installed in the circumferential groove 23, a torsion spring 5 is installed in the first receiving groove 21, and an upper through hole is provided at the bottom of the second receiving groove 22. Blocking piece 6, locking piece 7, tension spring 8 and guide core 9 are installed in the second receiving groove 22, and one end of the tension spring 8 is guide core 9 ) Is installed in the hook is connected to the locking piece (7), the other end is connected to the balance table (4); At the bottom of the guide core 9, there is an insertion portion 91, and the insertion portion 91 is formed of two insertion plates 911 installed facing each other, and a tension spring 8 is provided between the two insertion plates 911. A lower opening 94 into which the jamming is inserted is formed, and a conduction hole 912 is opened in each of the two inserting plates 911; The lower through hole 11 corresponding to the upper through hole is opened in the PCB plate 1, and the light emitting transistor 12 and the light receiving transistor 13 are installed on the edge of the lower through hole 11 of the PCB plate 1, The guide core 9 is slid up and down along the direction of the upper through hole and the lower through hole 11. The thin opto-mechanical keyboard switch implements a turn-on and turn-off function using light, and at the same time, achieves a thinner shape, thereby improving press balance and stability.
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