Patent ID: 9455096
Filing Date: 2016-09-27
CPC Classification: H01H

Claim Text:
1. A key module, comprising: a base having a restricting unit, wherein the restricting unit includes at least one first sliding connection portion and at least one second sliding connection portion, wherein the at least one first sliding connection portion forms an opening facing a first side of the base, wherein the at least one second sliding connection portion forms an opening facing a second side of the base opposite to the first side, wherein each of the sliding connection portions is L-shaped, and has a first portion erected relative to the base and a second portion bent from the first portion; a scissor-type unit disposed on and connected to the base, and having a first frame and a second frame, wherein the first frame and the second frame each have two fixed-rotation shafts and at least one sliding shaft, wherein the first frame has a connection shaft, the second frame has a shaft hole, the first frame is rotatably connected to the second frame through an accommodation of the connection shaft in the shaft hole, and the shaft hole has a travel distance therein provided for the connection shaft to move within the shaft hole along a predetermined direction; wherein the connection shaft travels along the predetermined direction in the shaft hole with substantially one degree of freedom; wherein the at least one sliding shaft of the first frame is restricted by and slidably disposed in the opening of the at least one first sliding connection portion on the base, wherein the at least one sliding shaft of the first frame is disposed on a top surface of the base; wherein the at least one sliding shaft of the second frame is restricted by and slidably disposed in the opening of the at least one second sliding connection portion on the base, wherein the at least one sliding shaft of the second frame is disposed on a top surface of the base; wherein the at least one sliding shaft of the first frame and the at least one sliding shaft of the second frame have a variable distance therebetween during the keycap is pressing; and wherein the two fixed-rotation shafts of the first frame are rotatably connected to the first pivot connection portions of the keycap; wherein the two fixed-rotation shafts of the second frame are rotatably connected to the second pivot connection portions of the keycap; wherein the fixed-rotation shafts of the first frame and the fixed-rotation shafts of the second frame connected to the keycap have a constant distance therebetween when the keycap is pressing;