Key structure

Abstract

The invention discloses a key structure by applying magnetic attraction force as a restoring force. A key cap support, a support of an actuating mechanism and another support in interaction with a magnetic attraction force are provided and arranged between a base and a key cap; when the key is free from being pressed by an external force, the two supports are driven by the magnetic attraction force to be stably supported on the base to form a stable support structure, so that the key cap is arranged at a position relatively far away from the base; when the key cap is pressed by the external force and moves towards the base, the magnetic attraction force is overcome by the external force, the two supports are separated, namely, the foregoing stable support structure is temporally damaged; and once the external force disappears, the two supports can form the stable support structure again due to the magnetic attraction force. Therefore, in the key structure, a traditional elastic member is prevented, a lifting mechanism still can acquire a relatively large arrangement space, and the structural strength and the actuating stability of the lifting structure are improved.

Description

Technical field [0001] The present invention relates to a key structure, in particular to a key structure using magnetic attraction as a restoring force. Background technique [0002] The traditional key structure utilizes an elastic member (such as a silicone dome) provided under the key cap to provide the key cap restoring force to directly drive the key cap back to the original position (that is, the position when it is not pressed). In order to provide the user with sufficient pressing feedback feel (that is, the magnitude and change of the reaction force felt by the user when pressing), the elastic member is usually difficult to reduce in volume, making it difficult to apply such a key structure to a thin keyboard. In addition, the use of an elastic member with a considerable volume will also affect the structural strength and stability of other members (for example, a lifting mechanism for providing the keycap to move up and down), and this problem will be more serious in a...

AI Technical Summary

Problems solved by technology

In order to provide the user with sufficient pressing feedback (that is, the magnitude and change of the reaction force felt by the user when pressing), the size of the elastic member is usually difficult to reduce, making it difficult for this key structure to be suitable for thin keyboards

In addition, the use of elastic components with considerable volume will also affect the structural strength and stability of other components (such as the lifting mechanism for providing the keycaps to move up and down), and this problem will be more severe in thin keyboards.

Therefore, unless the stability of keycap movement or the feeling of pressing feedback is reduced or sacrificed, it is difficult for this key structure to be suitable for thin keyboards.

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