Magnetic key switch

Abstract

The invention discloses a magnetic key switch which is characterized in that a movable part moves relative to a fixed part when being pressed, a first magnetic block is mounted on the movable part, a second magnetic block is mounted on the fixed part, and the first magnetic block and the second magnetic block attract each other when being adjacent to each other; the central axis of the attracted magnetic poles of the two magnetic blocks is perpendicular to the moving axis of the movable part relative to the fixed part when the attraction force is maximum; when the movable part is not pressed by external force, the first magnetic block and the second magnetic block attract each other and have the maximum attraction force, and when the movable part is pressed by the external force, the magnetic attraction force is cut to enable the movable part to move relative to the fixed part. According to the present invention, the two magnetic blocks are installed in the mode that the magnetic pole central axis between the two magnetic blocks is perpendicular to the action direction of the movable part, and pressing force is formed during pressing to shear the magnetic attraction force, the paragraph hand feeling of pressure sudden change of pressing fingers can be fed back, magnetic attraction force reset and sudden change hand feeling are effectively and perfectly combined, the design is ingenious, batch production is facilitated, and the market space is wide.

Description

technical field [0001] The invention relates to a key device, in particular to a magnetic key switch. Background technique [0002] Key switches are widely used in electronic products, common ones are switch shaft keys for keyboards, micro switches for mice, and so on. The user of the electronic product presses the key switch to make the movable parts inside the key switch move to trigger the relevant electronic components (such as metal electric contacts, light-emitting diodes, Hall switches, etc.) to generate switch signals. Then the key switch returns to the normal state during the time, usually adopting back-moving spring or reed etc. to be used for reset recovery. Of course, there is also a technical solution of using magnetic force as a key switch reset in the prior art, using the principle that the same poles of the magnetic blocks repel each other and the opposite poles attract each other, so that the movable parts of the key switch can return to normal after the pr...

AI Technical Summary

Problems solved by technology

[0003] However, the way of using magnetic force in the prior art basically adopts the direction of magnetic attraction or magnetic repulsion (usually refers to the direction of the central axis of the magnetic poles of the two magnets) and the moving direction of the movable part (usually refers to the pressing force received by the switch button). direction) is in the same direction, the force provided by this arrangement of magnetic blocks is linear and does not have a critical mutation effect. If there is no other structural part that can provide the feel, the switch button does not have any feeling of pressing the paragraph (pressing Paragraph feel refers to the feel brought by the sudden change of finger force feedback from the switch when the user presses the button switch)

[0004] In addition, in the prior art, the magnetic block is basically fixedly installed on the key base and the key shaft. When the user needs a key switch with knocking sound, it is necessary to set up additional structural parts that can provide knocking sound.

Moreover, because the fixed installation method makes the magnetic attraction or magnetic repulsion between the magnetic blocks basically constant, there is a disadvantage that the pressing force cannot be adjusted

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