Abstract: A keyswitch includes a base, a keytop, and first and second support members rotatably intersecting with each other. The keytop has an engaging slot having a rotation space and an opening. The first support member has a first pivot shaft pivoted to the engaging slot and a first connecting mechanism movably connected to the base. When the first pivot shaft is passing through the opening, the engaging slot squeezes the first pivot shaft to cause deformation of a groove of the first pivot shaft so as to make the first pivot shaft have a first size. When the first pivot shaft enters the rotation space, the amount of deformation of the groove decreases to make the first pivot shaft have a second size greater than the first size and a gap of the opening, so that the first pivot shaft could be constrained in the engaging slot.

Abstract: A keyswitch includes a base, a keytop, and first and second support members rotatably intersecting with each other. The keytop has an engaging slot having a rotation space and an opening. The first support member has a first pivot shaft pivoted to the engaging slot and a first connecting mechanism movably connected to the base. When the first pivot shaft is passing through the opening, the engaging slot squeezes the first pivot shaft to cause deformation of a groove of the first pivot shaft so as to make the first pivot shaft have a first size. When the first pivot shaft enters the rotation space, the amount of deformation of the groove decreases to make the first pivot shaft have a second size greater than the first size and a gap of the opening, so that the first pivot shaft could be constrained in the engaging slot.

Abstract: A keyboard includes a keycap, a pivot structure, a base and an X-structure. The keycap includes a bottom surface, a first edge and a second edge. The pivot structure includes two first engaging portions and two second engaging portions. The first engaging portions are disposed on the bottom surface and have a first distance away from the first edge. The second engaging portions are respectively disposed corresponding to the first engaging portions and have a second distance away from the second edge. The base is disposed under the keycap. One end of the X-structure is connected to the pivot structure of the keycap and the other end of the X-structure is movably connected to the base, thus, the keycap moves upward and downward corresponding to the base.

Abstract: A keyboard includes a keycap, a pivot structure, a base and an X-structure. The keycap includes a bottom surface, a first edge and a second edge. The pivot structure includes two first engaging portions and two second engaging portions. The first engaging portions are disposed on the bottom surface and have a first distance away from the first edge. The second engaging portions are respectively disposed corresponding to the first engaging portions and have a second distance away from the second edge. The base is disposed under the keycap. One end of the X-structure is connected to the pivot structure of the keycap and the other end of the X-structure is movably connected to the base, thus, the keycap moves upward and downward corresponding to the base.

Abstract: A keyboard includes an upper casing and a base. The upper casing having a first curved surface includes an area for accommodating a plurality of key switches. The base has a second curved surface, which corresponds to the first curved surface of the upper casing. The base includes a plurality of connection elements for connecting the key switches. Each of the key switches includes a scissors-like structure.

Abstract: A portable computer has a sunken socket on an upper plane of the portable computer for accommodating a keyboard device. A front end and a rear end fixing mechanisms are installed at a front and rear end of the sunken socket respectively for fixing the keyboard device. The rear end fixing mechanism has an aperture. The keyboard device has a base plate, a front edge clamping mechanism installed at the front edge of the base plate for clamping with the front end fixing mechanism of the sunken socket to fix the front edge of the base plate, and a rear edge clamping mechanism installed at the rear edge of the base plate. The rear edge clamping mechanism has at least one fastening device. The fastening device has a track installed at the rear edge of the base plate, a sliding cap slidingly installed on the track along a front-and-rear direction, and a locking device for locking the sliding cap on the track to prevent the sliding cap from moving forward.