Variable force key

Abstract

The invention relates to a variable force key, which comprises a housing, a center shaft, a magnetic ring and an electromagnet, wherein the top end of the center shaft is fixedly provided with a key cap seat, the center shaft can move back and forth in the housing in the vertical direction, the bottom end of the center shaft is fixedly provided with a limit member, the outer wall or inner wall ofthe bottom end of the limit member is provided with a flange, the magnetic ring sleeves the outer wall of the limit member or is arranged inside the limit member and is located at the upper end of theflange, the electromagnet is arranged at the bottom in the housing, the electromagnet can penetrate into the internal part of the limit member when the center shaft moves downward, and the current size and direction of the electromagnet can be adjusted. The electromagnet generates a repulsive force to the magnetic ring when being positively electrified so as to enable the magnetic ring to move upward to impact the center shaft; and the electromagnet generates a magnetic force to the magnetic ring when being reversely electrified so as to enable the magnetic ring to move downward to impact theflange of the limit member to generate a section feeling, the electromagnet penetrates the internal part of the limit member so as to enable the spacing between the magnetic ring and the electromagnet to be very small, and the slight change of the electromagnet in current can significantly change the section feeling intensity of the key.

Description

technical field [0001] The invention relates to the field of keyboard accessories, in particular to a variable force key. Background technique [0002] The keyboard is the most commonly used and most important input device for computers. By tapping the keyboard, you can input English letters, numbers, punctuation marks, etc. into the computer, so as to issue commands and input data to the computer. Keyboards are divided into mechanical keyboards, membrane keyboards, conductive silicone keyboards, and capacitive keyboards. Among them, mechanical keyboards have a strong sense of rhythm, and the feel will not change after long-term use, which is very popular among gamers. [0003] At present, the paragraph feel and pressure of mechanical keyboards are mainly changed by using different axes, such as the four commonly used black, red, green, and tea axes on the market. The black axis has the strongest sense of progression; the red axis basically has no sense of progression; the ...

AI Technical Summary

Problems solved by technology

[0006] In actual operation, it is found that since the second magnetic element is attracted to the first magnetic element, the distance between the second magnetic element and the third magnetic element is very far, and the repulsive force of the third magnetic element to the second magnetic element In fact, it is very small. At the same time, due to the use of coils, the magnetic field generated is relatively weak, so the sense of paragraph is not strong, which reduces the user's sense of experience. It needs to increase the current several times or dozens of times to the third magnetic element to improve Segmental feeling, inconvenient to use; in addition, since the magnet and spring pass through the center of the coil, the coil cannot increase the core to enhance its efficiency

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