| 摘要 |
The keyswitch structure uses two linkages form as V-shaped to support a keycap when the keycap is moved up and down. A first linkage and a second linkage are coupled with each other and also coupled with a support on a base respectively in a line contacting way, thereby forming a first axis, a second axis, and a third axis. The third axis is located between the first axis and the second axis. As the keycap is pressed to move downward, the keycap brings the two linkages and the support of the base to have relative rotation movement. Due to the geometric feature between the three axes, part of the linkages between the axes or the support of the base may be caused to slightly deform to provide a resilient restoring force that can move the keycap upward to a position not being pressed. |
| 主权项 |
1. A keyswitch structure, comprising:
a base having a first supporting portion and a second supporting portion; a keycap moveable up and down between a first position and a second position relative to the base; a first linkage having a first axis, the first linkage rotatably coupled to the first supporting portion, an end of the first linkage slidably coupled to the keycap; and a second linkage having a second axis, the second linkage rotatably coupled to the second supporting portion, an end of the second linkage slidably coupled to the keycap; wherein the other end of the first linkage rotatably engages with the other end of the second linkage, so as to form a third axis, the first axis is located between the two ends of the first linkage, and the second axis is located between the two ends of the second linkage; wherein the first linkage has a first portion with a first length defined between the first axis and the third axis, the second linkage has a second portion with a second length defined between the second axis and the third axis, a distance between the first axis and the second axis is defined to be a third length, and a sum of the first length and the second length is greater than the third length; wherein the first portion and the second portion are deformed to have a resilient restoring force when the keycap is pressed by an external force to move from the first position to the second position, and the resilient restoring force drives the keycap to move from the second position to the first position when the keycap is not pressed. |
