The disclosure provides a keyboard including a bottom plate, a key unit and a shielding layer. The bottom plate includes a through hole. The key unit is disposed on the bottom plate. The shielding layer covering a portion of the bottom plate includes a main part and an extension part extending from the main part toward the through hole. The shielding layer is provided with a black surface, and an orthographic projection of the key unit on the shielding layer overlaps the black surface.

The disclosure provides a keyboard including a bottom plate, a key unit and a shielding layer. The bottom plate includes a through hole. The key unit is disposed on the bottom plate. The shielding layer covering a portion of the bottom plate includes a main part and an extension part extending from the main part toward the through hole. The shielding layer is provided with a black surface, and an orthographic projection of the key unit on the shielding layer overlaps the black surface.

A keyboard includes a substrate, a display member, and a keyswitch assembly. The display member is disposed over the substrate. The keyswitch assembly includes a keycap, a fixing element, two balance bars, and a position-returning member. The keycap is located over the substrate and has a light-transmitting portion located over the display member. The fixing element is disposed on the substrate and has a retaining slot. Each of the balance bars includes a rod portion and an end portion. The rod portion is rotatably engaged with the keycap. The end portion is movably retained in the retaining slot. The position-returning member abuts against the keycap above the substrate and is adjacent to an edge of the keycap.

The disclosure provides a keyboard including a bottom plate, a key unit and a shielding layer. The bottom plate includes a through hole. The key unit is disposed on the bottom plate. The shielding layer covering a portion of the bottom plate includes a main part and an extension part extending from the main part toward the through hole. The shielding layer is provided with a black surface, and an orthographic projection of the key unit on the shielding layer overlaps the black surface.

The disclosure provides a keyboard including a bottom plate, a key unit and a shielding layer. The bottom plate includes a through hole. The key unit is disposed on the bottom plate. The shielding layer covering a portion of the bottom plate includes a main part and an extension part extending from the main part toward the through hole. The shielding layer is provided with a black surface, and an orthographic projection of the key unit on the shielding layer overlaps the black surface.

This disclosure relates to a key module including a base, a first pivotable frame, a second pivotable frame and a keycap. The base includes two assembly frames. Each of the assembly frames includes an engagement portion and two guide portions. The engagement portion is connected to and located between the guide portions. The first pivotable frame is engaged with the engagement portion by being guided by the guide portions of the assembly frames. The second pivotable frame is engaged with the engagement portion by being guided by the guide portions of the assembly frames. The keycap includes a press part, a first engagement part and a second engagement part. The first engagement part and the second engagement part are connected to the press part. The first pivotable frame is engaged with the first engagement part, and the second pivotable frame is engaged with the second engagement part.

A keyboard device includes plural key structures. Each key structure includes a base plate, a keycap, a connecting member and at least one raised structure. The keycap is located over the base plate. The connecting member is arranged between the base plate and the keycap. The keycap is movable upwardly or downwardly relative to the base plate through the connecting member. The connecting member includes at least one first hook part. The raised structure is installed on the base plate. The first hook part is connected with the raised structure. The raised structure includes a top wall, a lateral wall and a perforation. The lateral wall is connected between the top wall and the base plate. The perforation is formed in the lateral wall. The first hook part is penetrated through the perforation and contacted with the top wall.

A key assembly to be installed on a keyboard is provided. The key assembly includes a base plate including a snap-fit hook, a scissor member including a pivot shaft, and a keycap. The keycap is disposed on the scissor member and connected thereto. The scissor member is disposed on the base plate and connected thereto. A bending portion of the snap-fit hook has a chamfer structure to which the pivot shaft is pivotally connected in such a manner that the vertical gap between the snap-fit hook and the pivot shaft is reduced.

The disclosure provides a switch assembly and an electric drill. The switch assembly includes a first switch, a button, and a locking mechanism. The button is provided with a pressing part that cooperates with the first switch, so as to trigger the first switch when the button is pressed. The locking mechanism includes a locking member for locking the button and a trigger pivotally mounted and matched with the locking member. When the locking mechanism is locked, the locking member resists the button, so that the button cannot be pressed. When the trigger is rotated, the trigger drives the locking member to move, so that the locking member is misaligned with the button, and the button can be pressed at this time.

The disclosure provides a switch assembly and an electric drill. The switch assembly includes a first switch, a button, and a locking mechanism. The button is provided with a pressing part that cooperates with the first switch, so as to trigger the first switch when the button is pressed. The locking mechanism includes a locking member for locking the button and a trigger pivotally mounted and matched with the locking member. When the locking mechanism is locked, the locking member resists the button, so that the button cannot be pressed. When the trigger is rotated, the trigger drives the locking member to move, so that the locking member is misaligned with the button, and the button can be pressed at this time.