Abstract: A rotating shaft assembly and an electronic device, where the rotating shaft assembly includes a panel and a rotatable support mechanism. The rotatable support mechanism includes a swing arm, a fixed structure, a limit part, and a support structure. The support structure is provided with a mounting plane, and the panel is fastened to the mounting plane; a first limit portion is formed on the swing arm; and the limit part is connected to the support structure, and a second limit portion is formed on the limit part. When the screen is in a folded state, the limit part is separated from the swing arm. When the screen is in an unfolded state, the second limit portion of the limit part can abut against the first limit portion of the swing arm, thereby implementing mutual constraint between the swing arm and the support structure.

Abstract: This application provides a rotation mechanism and a foldable terminal. The rotation mechanism includes a fixed base, a first swing arm, a second swing arm, a first limiting member, and a second limiting member. A first sliding groove and a second sliding groove are disposed on the fixed base. A first rotation shaft part of the first swing arm is installed in the first sliding groove, and may rotate relative to the fixed base. A second rotation shaft part of the second swing arm is installed in the second sliding groove, and may rotate relative to the fixed base. Rotation directions of the first rotation shaft part and the second rotation shaft part are opposite relative to the fixed base. The first limiting member is disposed in a first sliding hole of the first rotation shaft part, and is fixedly connected to the fixed base. When the first rotation shaft part rotates relative to the fixed base, the first limiting member slides relative to the first rotation shaft part along the first sliding hole.

Abstract: An electronic device may include a mobile phone, a tablet computer, a handheld computer, a walkie-talkie, a POS machine, an event data recorder, a wearable device, a virtual reality device, or in-vehicle original equipment or another terminal product with a loudspeaker. An inner wall of a mounting cavity for mounting a loudspeaker and the loudspeaker are respectively provided with mating surfaces that adapt to each other. In the two mating surfaces, one is provided with a flexible sealing member and a limiting structure, and the other is provided with a rigid sealing member. When the loudspeaker is mounted, the rigid sealing member can move relative to the flexible sealing member along a first direction, until the rigid sealing member is mated with the flexible sealing member. The limiting structure can restrict the flexible sealing member from moving.

Abstract: Embodiments of this application provide a damping assembly, a rotating mechanism, and a foldable terminal. The damping assembly has a simple structure and occupies a relatively small space, which is conductive to a lightening and thinning design of a foldable terminal. The damping assembly includes a damping section and a shaft sleeve sleeved onto the damping part, where the damping section includes a first damping part and a second damping part, and the shaft sleeve includes a first shaft sleeve part and a second shaft sleeve part an interference amount between the first shaft sleeve part and the first damping part is a first interference amount; an interference amount between the second shaft sleeve part and the second damping part is a second interference amount, and the second interference amount is less than the first interference amount.

Abstract: A mobile terminal includes a main board, a heat dissipation layer, a first support, and a housing that are sequentially stacked. A heat generation element is disposed on the main board, and an orthographic projection of the heat generation element on the housing is located in an orthographic projection of the first support on the housing. The heat dissipation layer is disposed in contact with the heat generation element, and an area of an orthographic projection of the heat dissipation layer on the housing is larger than an area of the orthographic projection of the first support on the housing.

Abstract: A ceramic resin composite housing, including a ceramic member and a resin member that is molded on the ceramic member through injection molding. A surface that is of the ceramic member and that is bonded with the resin member includes a plurality of long-strip-shaped holes extending from the surface to the inside of the ceramic member. The long-strip-shaped holes have an open hole structure. The long-strip-shaped holes are filled with a resin material that constitutes the resin member. The composite housing has both a ceramic texture and appearance, and an internal fine structure formed by resin, the ceramic and the resin both are tightly bonded, and a bonding strength is high. The embodiments of the present invention further provide a preparation method of the ceramic resin composite housing, and a terminal including the composite housing.

Abstract: A heat pipe, a heat dissipation module, and a terminal device are disclosed. The heat pipe includes a heat pipe body and an ineffective portion that is integrally formed with the heat pipe body when the heat pipe is manufactured, where an inner side of a pipe wall of the heat pipe body has a porous capillary structure layer, the ineffective portion is located in at least a part of the periphery of the heat pipe body, and the ineffective portion is used as a mounting portion for fastening the heat pipe to another object. In a mounting process, a pressure needs to be applied only to the ineffective portion, so that the heat pipe body is not obviously affected. In this way, integrity of the porous capillary structure layer inside the heat pipe body is ensured while the heat pipe is fastened.