Abstract: This application provides a foldable assembly and an electronic device. The foldable assembly includes a base, a swing arm mechanism, a door panel mechanism, and an elastic support member. The base extends in a first direction. The swing arm mechanism includes a first swing arm and a second swing arm. In a second direction, the first swing arm and the second swing arm are respectively located on two sides of the base and are hinged to the base. The door panel mechanism includes a first door panel and a second door panel. The first door panel rotates together with the first swing arm, and the second door panel rotates together with the second swing arm. Two end portions of the elastic support member in the second direction are respectively connected to the first door panel and the second door panel.

Abstract: A rotating shaft assembly and a foldable electronic device are provided. The rotating shaft assembly includes: an integrally formed rotating shaft support, where the rotating shaft support extends from a first end of the foldable device to a second end of the foldable device in a first direction, and a middle portion of the rotating shaft support includes a first segment used for a flexible printed circuit to pass through; and at least four groups of main swing arms, where each group of main swing arms includes two main swing arms symmetrically disposed on two sides of the rotating shaft support, each main swing arm is rotatably connected to the rotating shaft support, and in the at least four groups of main swing arms are respectively disposed on a first end and a second end of the rotating shaft support and two sides of the first segment.

Abstract: Embodiments of this application provide a rotation mechanism and a foldable electronic device. The rotation mechanism includes: a primary swing arm, a sliding bracket, a shaft cover, and a stop portion, where the primary swing arm includes a protruding portion disposed on a first end surface, the sliding bracket is of an integral structure and has a slideway that can accommodate the protruding portion and a sliding groove adapted to a sliding portion of the primary swing arm, the stop portion is disposed on one of the shaft cover and the sliding groove bracket, and when the primary swing arm rotates from an unfolded position to a closed position, the protruding portion is fitted with the stop portion, to prevent the primary swing arm from being disengaged from the sliding groove.

Abstract: Embodiments of this application relate to the field of foldable electronic device technologies, and provide a folding assembly, a folding apparatus, and a terminal device. When the folding assembly is switched from an unfolded state to a folded state, the first main swing arm rotates relative to the first fixing member, the first main swing arm and the first support member slide and rotate relative to each other, the second main swing arm rotates relative to the second fixing member, and the second main swing arm and the first support member slide and rotate relative to each other, to enable a first support surface and a second support surface to be arranged opposite to each other and form an angle when the folding assembly is in the folded state.

Abstract: This application discloses a rotary shaft mechanism, and an electronic device, and is applied to the field of terminal device technologies. The rotary shaft mechanism includes a door panel, including a first surface. A length direction of the door panel is a first direction. M limiting structures are spaced apart from each other on the first surface and/or inside the door panel in the first direction. M+N kinematic pair sliding grooves are spaced apart from each other on the first surface, positions of the M kinematic pair sliding grooves are opposite to positions of the M limiting structures, the M kinematic pair sliding grooves are fastened to the corresponding limiting structures, the N kinematic pair sliding grooves are integrally formed with the door panel, M is a positive integer, and N is a positive integer.