Keyswitch

A keyswitch, comprising:

• a keycap, comprising a triggering portion;
• a base, disposed under the keycap;
• a combination of springs, disposed between the keycap and the base, the combination of springs comprising a first spring and a second spring connected with the first spring in series, so that when the keycap receives a pressing force to move from an initial position toward the base, the keycap transfers the pressing force to the combination of springs, and the pressing force is then transferred to the base through the first spring and the second spring in order;
• and
• a switch, fixed on the base and comprising a fixed contacting part and a movable contacting part disposed neighboring to the fixed contacting part, the movable contacting part being a cantilever structure, the cantilever structure having a fixed end, a free end, and a contacting portion, the cantilever structure being fixed on the base through the fixed end, the contacting portion being located between the fixed end and the free end and being used for electrically contacting the fixed contacting part;
• wherein when the keycap moves from the initial position toward the base beyond a transition position, one of the first spring and the second spring is fully compressed to be solid such that a height of the compressed spring reaches a corresponding solid height, and the other one of the first spring and the second spring is not fully compressed and remains elastically deformable as the keycap moves toward the base further, the compressed spring whose height reaches the corresponding solid height comprises a plurality of elastic coils, and the plurality of elastic coils substantially stack vertically;
• wherein when the keycap is at the initial position, the triggering portion pushes against the movable contacting part through the free end to make the movable contacting part separated from the fixed contacting part, and when the keycap moves toward the base beyond a triggering position, the triggering portion and the movable contacting part are separate so that the movable contacting part moves to contact the fixed contacting part through the contacting portion.

A keyswitch, comprising:

• a base, the base comprising an accommodating space, a lower surface, a first sliding part, and an elastic piece socket, the elastic piece socket comprising a sliding slot;
• a keycap, the keycap comprising an engaging part and a second sliding part, the first sliding part and the second sliding part being slidably engaged with each other, so that a movement of the keycap between an initial position and a transition position is a linear movement;
• a spring, disposed between the keycap and the base, so that when the keycap receives a pressing force to move from the initial position toward the base, the keycap transfers the pressing force to the spring;
• and
• an elastic piece, the elastic piece comprising a sliding portion, a protruding portion, and an elastic portion, the elastic portion being formed between the protruding portion and the sliding portion, the sliding portion having an upper edge;
• wherein the protruding portion is higher than the upper edge, the protruding portion is located within the accommodating space, and the lower surface is right above the upper edge;
• wherein the elastic piece is slidably disposed in the elastic piece socket by the sliding portion sliding in the sliding slot;
• wherein when the keycap moves downward toward the base, the engaging part obliquely upward pushes against the protruding portion to make the protruding portion move freely within the accommodating space, so that the sliding portion moves upward until the upper edge engaging with the lower surface of the base.