Key switch and keyboard

A key switch comprising:

• a key top;
• a pair of links that support the key top such that the key top is capable of being elevated and lowered;
• and
• a switch that opens and closes a contact point in accordance with respect to an elevating operation of the key top,
• wherein each of the links includes
• two arms,
• a connection portion that connects the two arms,
• a center arm provided between the two arms,
• two first shafts respectively formed at outer portions of the two arms, and
• two second shafts formed at portions of the center arm, the portions facing the two arms, respectively, and
• wherein the key top includes
• at least four first support portions each being provided with a first guide groove in which the respective first shaft is slidable, and
• at least four second support portions each being provided with a second guide groove in which the respective second shaft is slidable.