Key switching device and keyboard device

Abstract

The present invention provides a key switching device and a keyboard device. Key switching device (1) comprises: a plurality of controlling lever portions (3)-(5) engaged with substrate (2) at its one end side being able to rotate freely, fixing portions (6) engaged with the other end of each of the controlling lever (3)-(5) and supported being able to go up and down freely with respect to the substrate (2); and switching components (9) provided between said substrate (2) and said fixing portions (6) to perform switching operation as said fixing portions (6) go up and down, wherein the rotating shafts (shaft portion 3f, 4f) of the first and the second controlling lever portions (3), (4) right-left symmetrically provided are engaged with slot portions (guiding slot) (6f) of fixing portions (6) and the rotating shafts (shaft portion 5d) of controlling lever portions (5) are arranged crossly with respect to the rotating shafts (shaft portion 3f, 4f) of the engaging portions of controlling lever portions (3), (4). This device of the invention is the key switching device and the keyboard device with the switching device, which can be minimized in shape and thinned in dimension, its contact portions being able to be contacted reliably to perform the key inputting even though only the surrounding portions on the key top portions are pressed with fingers.

Description

technical field [0001] The present invention relates to a key switch device with good performance applied to a keyboard device or an input switch device used in an input / output device such as a word processor and a personal computer, and a keyboard device including the key switch device. Background technique [0002] according to Figure 4 , Figure 5 A conventional X-type key switch device applied to a keyboard device will be described. The mounting member 31 made of a metal plate or the like has a bottom wall 31a, a plurality of relatively long support portions 31b that are cut from the bottom wall 31a in a double-supported state, and a plurality of relatively long support portions 31b formed in a row, and cut from the bottom wall 31a in a cantilevered state , Paired with the support portion 31b, a plurality of semi-circular arc-shaped fixing portions 31c are formed in an orderly arrangement. In addition, a flexible substrate (not shown) having a plurality of fixed conta...

AI Technical Summary

Problems solved by technology

But when Figure 4 , Figure 5 In the key switch device of the structure shown, since the rotation shaft 34d as the rotation center of the lever members 34, 35 is located at the longitudinal center of the lever members 34, 35, the rotation axis 34d is the center of the lever members 34, 35. The key top 36 is connected on the upper end side of the key switch, and the lower end side of the lever parts 34, 35 is connected on the mounting part 31 side, with the miniaturization and thinning of the key switch device as the goal, when the lever parts 34, 35 are shortened However, the control rod members 34, 35 have a limit length that can rotate smoothly, and there is a disadvantage that they cannot be further miniaturized and thinned.

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