Key assembly with switchable sound and silent states

2:

• The key assembly with switchable sound and silent states according to claim 1, characterized in that the power-storing member comprises a power-storing spring and an inclined table that is configured on the key shaft;
• the swing arm has a middle portion as a pivot portion and an upper portion as a striking portion, the pivot portion has one side that extends to form an abutting table, and the power-storing spring has one end that abuts against the abutting table and the other end that is sleeved on a positioning convex column configured on the key shaft;
• when the limit structure at the bottom portion of the swing arm descends along with the pression on the key shaft and comes into contact with the electric control swing rod, it is limited and stopped, and further squeezes the power-storing spring to store power, and the key shaft continues to descend, which makes the inclined table push the limit structure away from the electric control swing rod, and further causes the striking portion to swing rapidly and strike the key shaft under the tension of the power-storing spring, thereby making a keystroke sound.

3:

• The key assembly with switchable sound and silent states according to claim 2, characterized in that the limit structure at the bottom portion of the swing arm is a structure that extends downward from the abutting table.

4:

• The key assembly with switchable sound and silent states according to claim 2, characterized in that a cavity slot is configured on an inner side of a side wall of the key shaft, both the swing arm and the power-storing member are arranged in the cavity slot, the cavity slot has a middle portion that is configured as a pivot cavity, the pivot connection between the pivot portion of the swing arm and the key shaft is present in the pivot cavity, and both the inclined table and the positioning convex column are arranged in the pivot cavity.

5:

• The key assembly with switchable sound and silent states according to claim 2, characterized in that the electric switching unit comprises a housing that consists of an electric control upper cover and an electric control base, as well as a magnet and a magnetic conductive plate mounted in the housing, the magnetic conductive plate has one end, on which a electromagnetic coil is sleeved, the electric control swing rod is mounted in the magnet, and the electromagnetic coil drives the magnet to rotate, thereby making the electric control swing rod rotate together;
• the electric control base has two ends that are provided with two pins, and two terminals are arranged on both ends of the electromagnetic coil and electrically connected to the two pins, respectively.

6:

• The key assembly with switchable sound and silent states according to claim 5, characterized in that a guide column is arranged in the electric control base, a hollow connecting column is configured on the electric control swing rod, and the connecting column is sleeved outside the guide column and inserted into a through hole of the magnet.

(canceled)

8:

• The key assembly with switchable sound and silent states according to claim 6, characterized in that an X-shaped balance frame is arranged between the key shaft and the key base, the balance frame is mounted between the key shaft and the key base, and on one end, the balance frame is provided with an inductive portion that can change electrical signals of the electrical component.

9:

• The key assembly with switchable sound and silent states according to claim 8, characterized in that the inductive portion is a grating member, the electrical component is a light pair transistor assembly that consists of a light-emitting component and a light-receiving component, and the light pair transistor assembly is arranged at a position adjacent to a grating to form an optical path, the grating member gradually changes the optical path between the light-emitting component and the light-receiving component along with the descent of the balance frame when the key shaft is pressed, thereby gradually changing luminous flux received by the light-receiving component and forming an optical variable signal.

10:

• The key assembly with switchable sound and silent states according to claim 8, characterized in that the inductive portion is a magnetic member, the electrical component is a Hall sensor, and the magnetic member gradually changes magnetic flux received by the Hall sensor along with the descent of the balance frame when the key shaft is pressed, thereby gradually changing the magnetic flux received by the Hall sensor and forming an electromagnetic signal.