A multi-point controlled pneumatic keyboard and its keycap precise injection molding method

Abstract

The invention relates to a multi-point controlled pneumatic keyboard and a keycap precise injection molding method thereof. It includes an integrated key cap, the hard part includes a hard plate and two or more downward convex push switches that are integrally formed under the hard plate and perpendicular to the hard plate; The shape and size of the board are matched with the soft rubber button surface and fixed on the bottom surface of the soft rubber button surface; the number and position of the membrane switch points corresponding to each soft rubber button unit on the printed circuit film are respectively the same as those on the corresponding hardware. The number and position of the downward convex push switches are matched one by one, and the multiple membrane switch points corresponding to each key are connected in parallel; after adopting the above structure and method, the present invention has the advantages of realizing key sensitivity through multi-point pressing, improving pressing accuracy, and firm molding , accurate positioning, elastic recovery through pneumatics, and the ability to prevent degumming and enable accurate positioning of soft and hard rubber during integral injection molding.

Description

technical field [0001] The invention relates to the technical field of computer keyboards, in particular to a multi-point controlled pneumatic keyboard and a keycap precision injection molding method thereof. Background technique [0002] With the development of the information industry, computers are increasingly widely used. Whether it is a notebook computer or a desktop computer, it is inseparable from the computer keyboard. 1. It is composed of a printed circuit film located under the integrated press cap and a keyboard bottom plate supported under the printed circuit film. The existing structure is to extend the key switch protrusion downwards from the center point of the integrated press cap to hit the printed circuit. The circuit film corresponds to the key switch. During use, it is found that the existing ultra-thin keyboard has the following defects: due to the cancellation of the traditional scissors feet, it sometimes causes deviation during the pressing process, ...

AI Technical Summary

Problems solved by technology

[0002] With the development of the information industry, computers are increasingly widely used. Whether it is a notebook computer or a desktop computer, it is inseparable from the computer keyboard. 1. It is composed of a printed circuit film located under the integrated press cap and a keyboard bottom plate supported under the printed circuit film. The existing structure is to extend the key switch protrusion downwards from the center point of the integrated press cap to hit the printed circuit. The circuit film corresponds to the key switch. During use, it is found that the existing ultra-thin keyboard has the following defects: due to the cancellation of the traditional scissors feet, it sometimes causes deviation during the pressing process, and the key switch sometimes protrudes. On the other hand, when pressing the one-piece keycap, due to the unsupported scissor feet, when pressing to the edge of the keycap, the edge of the keycap will fall first, resulting in insensitive pressing contact problem; in addition, because the ultra-thin keyboard removes the special elastic recovery parts such as scissor feet, if only relying on the soft rubber support wall for elastic recovery, the recovery elastic force is small and the recovery speed is slow; another problem is that between soft rubber and hard sheet In the process of integral injection molding, when the hard sheet is injected with soft rubber, the hard sheet floats and shifts due to the impact force, so that the soft rubber cannot be adhered to the upper surface of the hard part; in view of this, how to design a multi-point Controlled pneumatic keyboard and its keycap precise injection molding method to solve the above problems become problems to be solved

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