US 12,080,492 B2
Keyswitch structure and lift mechanism thereof
Chen Yang, Taoyuan (TW); Ling-Hsi Chao, Taoyuan (TW); Shao-Lun Hsiao, Taoyuan (TW); and Yu-Chun Hsieh, Taoyuan (TW)
Assigned to DARFON ELECTRONICS CORP., Taoyuan (TW)
Filed by DARFON ELECTRONICS CORP., Taoyuan (TW)
Filed on Nov. 18, 2022, as Appl. No. 17/989,703.
Claims priority of provisional application 63/356,558, filed on Jun. 29, 2022.
Claims priority of provisional application 63/361,375, filed on Dec. 16, 2021.
Claims priority of application No. 111132826 (TW), filed on Aug. 31, 2022.
Prior Publication US 2023/0197373 A1, Jun. 22, 2023
Int. Cl. H01H 13/12 (2006.01); H01H 13/7073 (2006.01); H01H 13/83 (2006.01)
CPC H01H 13/83 (2013.01) [H01H 13/7073 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A lift mechanism for supporting a keycap in a vertical direction, the lift mechanism comprising:
a first support;
a second support, the first support and the second support being connected to each other and being mutually rotatable with respect to a rotation axis; and
a spring structure, the spring structure being connected to the first support and the second support, the spring structure driving the first support and the second support to lift the keycap in the vertical direction;
wherein the lift mechanism as a whole defines a central space, the central space extends through the whole lift mechanism, the spring structure does not enter the central space, and when the keycap is not pressed, the spring structure is lower than the rotation axis in the vertical direction; and
wherein the first support has a first base connecting portion and a first keycap connecting portion, the second support has a second base connecting portion and a second keycap connecting portion, a distance between the first base connecting portion and a portion of the first support connecting with the spring structure is less than a distance between the first keycap connecting portion and the portion of the first support connecting with the spring structure, and a distance between the second base connecting portion and a portion of the second support connecting with the spring structure is less than a distance between the second keycap connecting portion and the portion of the second support connecting with the spring structure.