Abstract: The application provides a foldable holder and an electronic device. A bottom plate of the foldable holder is rotationally connected to a first support plate through a first rotating portion, and a second support plate is rotationally connected to the first support plate through a second rotating portion. A clamping portion is mounted on the first support plate and slidable relative to the first support plate. When the foldable holder is in a closed state, the clamping portion clamps the second rotating portion to lock the first support plate and the second support plate, when the first support plate is at an angle to the bottom plate, the clamping portion is unlocked from the second rotating portion and clamped with the first rotating portion, the unlocking of the second rotating portion enables the second support plate to rotate relative to the first support plate.

Abstract: This application provides a foldable support and an electronic device. The foldable support includes a bottom plate, a first support plate, a second support plate, a first magnetic member, and a second magnetic member: the first support plate is connected to the bottom plate; the second support plate is connected to the first support plate; and the first magnetic member is arranged on the first support plate, the second magnetic member is arranged on the second support plate, and the first magnetic member is configured to attract the second magnetic member in a case that an included angle between the first support plate and the bottom plate is less than a preset angle, and is further configured to repel the second magnetic member in a case that the included angle between the first support plate and the bottom plate is greater than or equal to the preset angle.

Abstract: A finish coat composition, including: 30˜60 parts by mass of film-forming resin, where the film-forming resin includes one or more of acrylic resins and polyurethane acrylate resins; 5˜20 parts by mass of acrylate monomer; 1˜10 parts by mass of photoinitiator; 0.5˜10 parts by mass of leveling agent; 0˜20 parts by mass of matting powder; and 20˜50 parts by mass of solvent. This application further provides a composite material, a middle frame of an electronic device. The finish coat composition according to this application can be crosslinked and cured under an action of ultraviolet light to form a finish coat having good reliability and bonding performance, which is used as a finish coat layer of the middle frame of an electronic device and the battery cover of an electronic device, and has good bonding performance with glue, thereby preventing a screen of the electronic device from falling off.

Abstract: A middle frame includes a flat part and a first recess part that are integrally molded, where the first recess part is recessed relative to a first surface of the flat part to form a first groove, where an opening is located on the first surface; the first recess part includes a bottom wall, a first side wall, and a second side wall, where an orientation of the bottom wall is the same as that of the first surface, the first side wall and the second side wall separately intersect the bottom wall, and the first side wall is connected to the second side wall; and an opening formed by the first side wall and the second side wall is gradually enlarged in a first direction parallel to a flow direction of a die casting material in a die casting molding process of the middle frame.

Abstract: This application provides a fan and an electronic device. The fan includes a body, and an air duct, an air outlet and a flow guiding inlet are formed in the body; the air duct includes an air inlet area and an air outlet area, and a flow guiding member is disposed in the air outlet area; the flow guiding member and the body form a first channel, a second channel, and a third channel. After a main airflow in the air inlet area enters the first channel and the third channel, a negative pressure area is formed at the flow guiding outlet, a differential pressure exists between air pressures in the negative pressure area and the second channel, and the differential pressure enables air to enter the flow guiding cavity from the flow guiding inlet to form an induced airflow, thereby increasing an air output.

Abstract: This application provides a foldable support and an electronic device. The foldable support includes a bottom plate, a first support plate, a second support plate, a first magnetic member, and a second magnetic member: the first support plate is connected to the bottom plate; the second support plate is connected to the first support plate; and the first magnetic member is arranged on the first support plate, the second magnetic member is arranged on the second support plate, and the first magnetic member is configured to attract the second magnetic member in a case that an included angle between the first support plate and the bottom plate is less than a preset angle, and is further configured to repel the second magnetic member in a case that the included angle between the first support plate and the bottom plate is greater than or equal to the preset angle.

Abstract: A camera module includes a lens group, an image sensor, a reflective member, and a driving assembly. The lens group includes a plurality of lenses, the reflective member is configured to reflect, to the image sensor, light rays focused by at least one of the plurality of lenses, and the driving assembly is configured to drive the reflective member to move. An electronic device includes the camera module mounted on a housing.

Abstract: This application provides a fan and an electronic device. The fan includes a body, and an air duct, an air outlet and a flow guiding inlet are formed in the body; the air duct includes an air inlet area and an air outlet area, and a flow guiding member is disposed in the air outlet area; the flow guiding member and the body form a first channel, a second channel, and a third channel. After a main airflow in the air inlet area enters the first channel and the third channel, a negative pressure area is formed at the flow guiding outlet, a differential pressure exists between air pressures in the negative pressure area and the second channel, and the differential pressure enables air to enter the flow guiding cavity from the flow guiding inlet to form an induced airflow, thereby increasing an air output.

Abstract: Embodiments of this application provide a fan apparatus and an electronic device. The fan apparatus includes a first housing, a second housing, a fan blade unit, and a fence member located in the first housing. The fan blade unit is rotatably disposed in an accommodating cavity in the first housing. The fence member is located on a circumferential outer side of the fan blade unit. The second housing is covered on the first housing and the fence member, and encloses at least one resonant cavity together with the first housing and the fence member. The resonant cavity communicates with the accommodating cavity through a muffling hole on a cavity wall. Air in the resonant cavity resonates under excitation by an airflow of the fan blade unit. The fan apparatus of this application helps alleviate a noise problem caused by a fan with a high rotational speed, without affecting a heat dissipation effect of an existing electronic device.

Abstract: The application provides a foldable holder and an electronic device. A bottom plate of the foldable holder is rotationally connected to a first support plate through a first rotating portion, and a second support plate is rotationally connected to the first support plate through a second rotating portion. A clamping portion is mounted on the first support plate and slidable relative to the first support plate. When the foldable holder is in a closed state, the clamping portion clamps the second rotating portion to lock the first support plate and the second support plate, when the first support plate is at an angle to the bottom plate, the clamping portion is unlocked from the second rotating portion and clamped with the first rotating portion, the unlocking of the second rotating portion enables the second support plate to rotate relative to the first support plate.

Abstract: A hinge mechanism is applied to-a protective case. A first rotating shaft assembly in the hinge mechanism is fixedly connected to a first portion of the protective case, and is further rotatably connected to a second portion of the protective case. A second rotating shaft assembly in the hinge mechanism is fixedly connected to the second portion of the protective case, and is further rotatably connected to a third portion of the protective case. When the second portion of the protective case rotates relative to the first portion of the protective case by using the first rotating shaft assembly, a transmission part that cooperates with both the first rotating shaft assembly and the second rotating shaft assembly is configured to drive the third portion of the protective case to rotate relative to the second portion of the protective case by using the second rotating shaft assembly.

Abstract: This application provides a rotating shaft. The rotating shaft includes a central shaft, a first bracket, a second bracket, an elastic member, and a concave cam assembly. The first bracket is rotatably disposed on the central shaft. The second bracket is fastened to the central shaft. The elastic member is disposed on the central shaft, and the elastic member is in a hollowed-out shape and is of an integrated structure. The concave cam assembly is disposed on the central shaft, and the concave cam assembly may enable the elastic member to be deformed. When the first bracket rotates relative to the second bracket, the concave cam assembly generates an extrusion force acting on the elastic member, so that the elastic member in a hollowed-out shape is deformed, and then a specific included angle is formed between the first bracket and the second bracket.

Abstract: Embodiments of this application disclose a middle frame of an electronic device, a middle frame assembly, and an electronic device. The middle frame assembly includes a middle frame and a plastic part injection-molded on a surface of the middle frame. The middle frame includes a middle plate and a first accommodation chamber configured to accommodate a battery of the electronic device. There is a drainage material section on an outer side surface of the middle frame. The middle plate includes a first middle plate region for forming a bottom wall of the first accommodation chamber. The drainage material section is at least partially located between surfaces on which a top surface and a bottom surface of the first middle plate region are located.

Abstract: A mobile terminal includes: a housing having a side wall that is provided with an accommodation cavity, where the accommodation cavity has a first side wall and a second side wall, the first side wall is provided with an avoidance groove, and the avoidance groove is disposed on a side of the first side wall close to the accommodation cavity and is in communication with the accommodation cavity; a display screen, mounted in the housing; and a trigger portion that at least partly protrudes into the accommodation cavity and is movably connected to the accommodation cavity, where the trigger portion includes a cable board, where the avoidance groove is configured to accommodate the cable

Abstract: A notebook computer includes a control chip, a speaker, and the fan. The control chip and the fan are disposed inside a chassis of the notebook computer. The method includes: controlling, by the control chip, the speaker to send a first sound signal, where the first sound signal and a first noise signal that is generated by running of the fan have opposite phases and a same frequency. The first sound signal is used to cancel the first noise signal.

Abstract: Embodiments of this application disclose a camera module, including a lens group, an image sensor, a reflective member, and a driving assembly. The lens group includes a plurality of lenses, the reflective member is configured to reflect, to the image sensor, light rays focused by at least one of the plurality of lenses, and the driving assembly is configured to drive the reflective member to move. Costs of the camera module are relatively low. The embodiments of this application further disclose an electronic device.