Keyboard device

A keyboard device, comprising:

• a key comprising a keycap and a stabilizer bar, wherein the stabilizer bar comprises a transverse bar part and a first hook part, wherein the transverse bar part is pivotally coupled to the keycap, and the first hook part is located at a first end of the transverse bar part;
• a base plate connected with the key, and comprising a first connecting structure, wherein the first connecting structure is protruded upwardly from the base plate and comprises a first locking hole, and the first hook part of the stabilizer bar is penetrated through the first locking hole;
• and
• a membrane circuit board arranged between the key and the base plate, and comprising a membrane switch corresponding to the key, wherein the membrane circuit board further comprises a first extension part, and the first extension part is extended from a first side of the first locking hole to a second side of the first locking hole and penetrated through the first locking hole,
• wherein while the keycap is moved upwardly or downwardly relative to the base plate, the first hook part penetrated through the first locking hole is movable on the first extension part.