CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Taiwan Application Serial Number 109137985, filed Oct. 30, 2020, which is herein incorporated by reference.

BACKGROUND

Technical Field

The present disclosure relates to a keyswitch device.

Description of Related Art

Currently, the keyboard is one of the indispensable input devices to enter text or numbers while using a personal computer (PC). Moreover, consumer electronic products used in daily life or large-scale processing equipment used in the industrial sector require keyswitches as input devices to be operated.

Generally speaking, the surface of the keycap of each keyswitch presents a specific character for the user to recognize, and the keyboard can generate a key signal corresponding to a keyswitch after it is pressed by a user. However, after using the keyboard for a long time, the characters on the keycaps of some keyswitches tend to be worn out. In addition, according to actual measurement, during the operation of the keyboard, heat will gradually accumulate in the center of the bottom of each keycaps (that is, the top of the rubber dome), which may affect the user's pressing comfort.

Accordingly, how to provide a keyswitch device to solve the aforementioned problems becomes an important issue to be solved by those in the industry.

SUMMARY

An aspect of the disclosure is to provide a keyswitch device that can efficiently solve the aforementioned problems.

According to an embodiment of the disclosure, a keyswitch device includes a bottom plate, a keycap, and a position-returning member. The keycap includes a metal cover and a covering member. The metal cover includes a first main body. The first main body has a first surface and a second surface respectively facing toward and facing away from the bottom plate. The first surface presents a pattern. The covering member includes a second main body covering the first surface. The second main body has a light-transmitting area covering the pattern. The position-returning member is disposed between the bottom plate and the keycap and contacts the first main body.

In an embodiment of the disclosure, the metal cover further includes a first edge bending portion connected to the first main body. The covering member further includes a second edge bending portion connected to the second main body. The keycap further includes an adhesive material adhering the first edge bending portion and the second edge bending portion.

In an embodiment of the disclosure, the first edge bending portion has at least one recessed hole facing the second edge bending portion. A part of the adhesive material is accommodated in the at least one recessed hole.

In an embodiment of the disclosure, the metal cover further includes a first edge bending portion connected to the first main body. The covering member further includes a second edge bending portion and a buckling portion. The second edge bending portion is opposite to the first edge bending portion. The buckling portion is connected to the second edge bending portion and buckles an edge of the first edge bending portion away from the first main body.

In an embodiment of the disclosure, the keycap further includes an engaging structure. The engaging structure is fixed to the first main body and protrudes from the second surface. The keyswitch device further includes a connecting assembly. The connecting assembly is connected between the bottom plate and the engaging structure, and is configured to guide the keycap to move upward and downward relative to the bottom plate.

In an embodiment of the disclosure, the engaging structure is attached to the second surface and has a hollow portion. The position-returning member passes through the hollow portion to contact the first main body.

In an embodiment of the disclosure, the first main body has an engaging hole communicated to the first surface and the second surface. The engaging structure is embedded in the engaging hole.

In an embodiment of the disclosure, the metal cover further includes a supporting rib. The supporting rib is connected to the first main body and penetrates the engaging structure.

In an embodiment of the disclosure, the supporting rib protrudes from the second surface and crosses the engaging hole.

In an embodiment of the disclosure, the second main body has a non-light-transmitting area covering the engaging hole.

Accordingly, in the keyswitch device of the present disclosure, by covering the pattern of the metal cover by the covering member, the problem that the pattern is worn out after the keycap is used for a long time can be avoided. In addition, by making the position-returning member under the keycap directly contact the metal cover, the problem of heat accumulation between the center of the bottom of the keycap and the top of the position-returning member can be effectively avoided.

It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.

