US 12,469,655 B2
Key structure
Mitsuo Horiuchi, New Taipei (TW); and Chia-Hsin Chen, New Taipei (TW)
Assigned to CHICONY ELECTRONICS CO., LTD., New Taipei (TW)
Filed by CHICONY ELECTRONICS CO., LTD., New Taipei (TW)
Filed on May 2, 2023, as Appl. No. 18/310,987.
Claims priority of application No. 111123763 (TW), filed on Jun. 24, 2022.
Prior Publication US 2023/0420198 A1, Dec. 28, 2023
Int. Cl. H01H 13/14 (2006.01); H01H 13/20 (2006.01)
CPC H01H 13/14 (2013.01) [H01H 13/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A key structure, comprising:
a base plate;
a keycap;
a connecting assembly comprising a first frame and a second frame pivotally connected to each other, the first frame having two opposite ends movably connected to the base plate and the keycap, respectively, and the second frame having two opposite ends movably connected to the base plate and the keycap, respectively, to drive the keycap upward and downward relative to the base plate;
a protrusion disposed on a sidewall of the first frame or a sidewall of the second frame; and
a limiting member disposed at the base plate and extending from the base plate toward the keycap and having a limiting hole, the protrusion being disposed in the limiting hole, wherein the protrusion abuts against the limiting member when the keycap is at a maximum height, and the maximum height is restricted by an upper side of the protrusion abutting against an inner wall of the limiting hole;
wherein the protrusion does not abut against the limiting member when the keycap is pressed.