Button switch

The utility model relates to the technical field of switches. The utility model particularly relates to a button switch. The key comprises a key cap and a lower cover, the lower cover is provided withan accommodating groove; the key cap is matched with the accommodating groove; a balance rod is further included, the key cap is provided with a rotating shaft hole; at least one sliding rail position is arranged in the containing groove. One end of the balance rod is rotationally connected with the rotating shaft hole; the other end of the balance rod is slidably connected with the slide rail position; key cap pressing, one end of the balance rod rotates in the rotating shaft hole; according to the utility model, the structure is simple, the design is reasonable, the pressing balance of thekey cap is good, when the key cap is pressed, the mutual limiting position of the key cap and the lower cover is realized through the balance rod, even if the pressing position is not the middle position of the key cap, the ba