Mechanical thin film keyboard

Abstract

The invention discloses a mechanical thin film keyboard including a thin film circuit layer, an X-shaped bracket and a key cap. A capped bowl-shaped silicone key corresponding to the thin film circuit layer is arranged on the inner side of the key cap. A bowl opening part of the silicone key is mounted on the inner side of the key cap and the top of the silicone key protrudes to correspond to the thin film circuit layer. A linear spring is arranged between the key cap and the thin film circuit layer. Through pushing the key cap and further compressing the linear spring and make vertical movement to the thin film circuit layer along the guiding direction of the X-shaped bracket, the silicone key on the inner side of the key cap is driven to move to the thin film circuit layer. The top protrusion of the silicone key achieves electrode contact point conduction of the thin film circuit layer and further achieves conduction of a conductive circuit in the thin film circuit layer. The keyboard is designed by combining the advantages of thin film keyboards and mechanical keyboards, thus keeps the light weight and low cost of thin film keyboards, and has the advantages of mechanical keyboards such as high sensitivity, good hand feeling and long service life.

Description

technical field [0001] The invention relates to a keyboard device, in particular to a mechanical membrane keyboard. Background technique [0002] refer to figure 1 , the conventional membrane keyboard mainly includes a keycap 11, a scissor foot (X-shaped bracket 12) arranged under the keycap 11, and a silicone button 13. The X-shaped bracket 12 is used to fix and stabilize the keycap 11, and is matched with a Layer thin film circuit layer 14; Wherein, silicone button 13 is in the shape of an inverted bowl, and its bowl mouth is installed on the thin film circuit layer 14, and its bottom protrusion is used to contact the keycap 11, and there is a shaft core connecting the protrusion inside. When the keycap 11 is pressed, the silicone button 13 is driven by the keycap 11 and triggered downward, so that the shaft core inside the silicone button 13 drives the electrode contact points 15 in the thin film circuit layer 14 to contact each other to achieve conduction, and through t...

AI Technical Summary

Problems solved by technology

However, since this kind of mechanical keyboard needs to cooperate with the linear spring 22 through the key shaft 21, each key needs an independent switch (conductive shrapnel 23), and only a PCB circuit board 24 with a certain mechanical strength can be used to realize the installation and connection of the above structure. , so it has the disadvantages of thick overall volume and high cost

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