Multi-point controlled pneumatic keyboard and accurate injection molding method for keycaps thereof

Abstract

The invention relates to a multi-point controlled pneumatic keyboard and an accurate injection molding method for keycaps thereof. The multi-point controlled pneumatic keyboard comprises an integratedkeycap, and is characterized in that each hard member includes a hard plate and two or more downward protruding push switches which are integrally molded below the hard plate and perpendicular to thehard plate; the hard plate is matched with a soft rubber key surface in shape and size and fixed on the bottom of the soft rubber key surface; the number and position of thin-film switch points corresponding to each soft rubber key unit on a printed circuit thin film are respectively matched with the number and position of the downward protruding push switches on the corresponding hard member, and the multiple thin-film switch points corresponding to each key are mutually connected in parallel. By adopting the above structure and method, the multi-point controlled pneumatic keyboard achievesthe characteristics of sensitive keys, pressing accuracy improvement, firm molding, accurate positioning, elastic recovery realized in a pneumatic mode, degumming prevention and accurate positioning in integrated hard and soft rubber injection molding through multi-point pressing.

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 integrated key cap, due to the unsupported scissor feet, when pressing to the edge of the key cap, the edge of the key cap will fall first, resulting in insensitive pressing contact Problem; In addition, because the ultra-thin keyboard removes 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 the 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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