Abstract: A keyboard assembly includes a keyboard body and a drive mechanism. The keyboard body includes a frame assembly and keys. The keys are arranged in a plurality of rows in parallel, each row of keys include a plurality of keys, and the keys are located in key slots on the keyboard body. The frame assembly includes a first frame and a crossbar, and the drive mechanism drives the first frame to move in an arrangement direction of the plurality of rows of keys. One crossbar is correspondingly disposed for each row of keys, the crossbar moves, along with movement of the first frame, in an arrangement direction of each row of keys, and the keys move, along with movement of the crossbar, in a direction toward the key slots or in a direction of exposing the key slots.

Abstract: Embodiments provide a hinge mechanism and a foldable mobile terminal. A swing arm component and a synchronization component are disposed on both sides of a main shaft component of the hinge mechanism, so that when a swing arm rotates around the main shaft component, a synchronization arm on a same side as the swing arm rotates accordingly to drive a synchronization arm and a swing arm on the other side to rotate, and further, housings on both sides of the foldable mobile terminal including the main shaft component can move synchronously, and force of a flexible screen is relatively even. In addition, because swing arms on both sides of the main shaft component rotate around different axes, through such a design, accommodation space that can accommodate the flexible screen can be formed during rotation of the swing arms, so that damage to the flexible screen is reduced.

Abstract: A rotating shaft mechanism (1) includes a main shaft module (101), and the main shaft module (101) includes a base (1013), a first support plate (1011), a second support plate (1012), a first gear linkage (1014), a second gear linkage (1015), an elastic mechanical part (1022), and a conjoined cam (1021). The first support plate (1011) and the second support plate (1012) are rotatably connected to the base (1013). The first gear linkage (1014) and the second gear linkage (1015) are rotatably connected to an end portion of the base (1013), and the first gear linkage (1014) and the second gear linkage (1015) are connected through transmission by using gears that are engaged with each other.

Abstract: A rotating shaft mechanism (1) includes a length maintaining mechanism (1a) and a main shaft assembly (1b). The length maintaining mechanism (1a) includes a fastening member (101) and two swing arms (102, 103), and the two swing arms (102, 103) are rotatably connected to the fastening member (101). The swing arm includes a sliding block (1021), a swing rod (1022), and a connecting assembly (1023), and the swing rod (1022) may slide along the sliding block (1021). The swing rod (1022) is rotatably connected to the fastening member (101), and the connecting assembly (1023) is also rotatably connected to the fastening member (101). When the swing rod (1022) rotates relative to the fastening member (101), the connecting assembly (1023) may be driven to rotate around the fastening member (101). The main shaft assembly (1b) includes a cover plate (105).

Abstract: A support assembly, includes a rotating shaft mechanism and a support portion. The rotating shaft mechanism includes a rotating assembly. The rotating assembly includes a first fastening piece, a second fastening piece, a connecting piece, and a connection rod assembly. The first fastening piece and the second fastening piece are located on a same side of the connecting piece. A first sliding slot is disposed on an end face that is of the first fastening piece and that faces the second fastening piece, and a second sliding slot is disposed on an end face that is of the second fastening piece and that faces the first fastening piece. The support portion includes a first support board, a second support board, and a third support board. The second support board is rotatively connected to the first support board and the third support board.

Abstract: A keyboard assembly includes a keyboard body and a drive mechanism. The keyboard body includes a frame assembly and keys. The keys are arranged in a plurality of rows in parallel, each row of keys include a plurality of keys, and the keys are located in key slots on the keyboard body. The frame assembly includes a first frame and a crossbar, and the drive mechanism drives the first frame to move in an arrangement direction of the plurality of rows of keys. One crossbar is correspondingly disposed for each row of keys, the crossbar moves, along with movement of the first frame, in an arrangement direction of each row of keys, and the keys move, along with movement of the crossbar, in a direction toward the key slots or in a direction of exposing the key slots.

Abstract: An electronic device includes a keyboard. The keyboard includes a base plate and keys disposed on a base plate. The base plate includes a back support plate, a membrane, and a backlight plate. The membrane and the backlight plate are disposed on two sides of the back support plate. The back support plate supports the membrane, the backlight plate, and the keys. In addition, a buffer structure is disposed on a surface of a side that is of the backlight plate and that faces the key. The back support plate is provided with a first through hole. The key is disposed on a side that is of the membrane and that is away from the back support plate. A protrusion is disposed on a side that is of the key and that faces the base plate. The key moves toward the base plate. The protrusion can press the buffer structure.

Abstract: An electronic device includes a keyboard. The keyboard includes a base plate and keys disposed on a base plate. The base plate includes a back support plate, a membrane, and a backlight plate. The membrane and the backlight plate are disposed on two sides of the back support plate. The back support plate supports the membrane, the backlight plate, and the keys. In addition, a buffer structure is disposed on a surface of a side that is of the backlight plate and that faces the key. The back support plate is provided with a first through hole. The key is disposed on a side that is of the membrane and that is away from the back support plate. A protrusion is disposed on a side that is of the key and that faces the base plate. The key moves toward the base plate. The protrusion can press the buffer structure.

Abstract: Provided herein is a keyboard assembly that includes a keyboard substrate, a plurality of keycaps, and a plurality of lifting supports. Each keycap is connected to the keyboard substrate by using a lifting support. The keyboard substrate is connected to a bottom plate and a top plate, with the bottom plate including a key accommodation groove that further includes a concave slope. The lifting support is located in the key accommodation groove, with one end abutting against the concave slope and being capable of sliding on the concave slope. In a process in which the top plate rotates to a first specified location, the keyboard substrate is driven to move, the lifting support descends, and the keycap descends. In a process in which the top plate rotates to a second specified location, the keyboard substrate is driven to move.

Abstract: Embodiments provide a hinge mechanism and a foldable mobile terminal. A swing arm component and a synchronization component are disposed on both sides of a main shaft component of the hinge mechanism, so that when a swing arm rotates around the main shaft component, a synchronization arm on a same side as the swing arm rotates accordingly to drive a synchronization arm and a swing arm on the other side to rotate, and further, housings on both sides of the foldable mobile terminal including the main shaft component can move synchronously, and force of a flexible screen is relatively even. In addition, because swing arms on both sides of the main shaft component rotate around different axes, through such a design, accommodation space that can accommodate the flexible screen can be formed during rotation of the swing arms, so that damage to the flexible screen is reduced.