Abstract: This application relates to a rotating assembly, a foldable mechanism, and a foldable terminal, and relates to the field of terminal technologies. The rotating assembly includes a base, a rotating shaft, and a swing arm, where the base is provided with a rotating shaft through-hole and an arc-shaped first slideway, the first slideway and the rotating shaft through-hole communicate with each other, and axes thereof are parallel to each other; the rotating shaft is provided with an arc-shaped second slideway, an axis of the rotating shaft is parallel to an axis of the second slideway, the second slideway runs through the rotating shaft, and a radius of the second slideway is equal to that of the first slideway; the rotating shaft is located in the rotating shaft through-hole, the first slideway and the second slideway can be connected to each other to form a continuous slideway, and the swing arm is located in the continuous slideway and can slide in the continuous slideway.

Abstract: An electronic device includes a housing, a flexible display module, a protection plate, a first connector, and a first base plate. The housing includes a rotating assembly and two supporters. The rotating assembly is disposed between the two supporters. The supporter is rotatably connected to the rotating assembly. The flexible display module is covered on the housing. The flexible display module includes a backplane. The backplane includes a bendable area. The bendable area is disposed facing the rotating assembly. The protection plate is disposed between the backplane and the housing. One of the backplane and the protection plate is connected to the first base plate. A part of the protection plate is located between the bendable area and the housing. The first connector connects the backplane and the protection plate. The first connector is disposed on an outer side of the bendable area of the backplane.

Abstract: Disclosed are a design method for an ROPS framework and a cab for engineering machines. The design method for an ROPS framework comprises: obtaining target values of a lateral load Fmax and lateral load energy Umax of an ROPS framework by calculation according to the standards of earth-moving machines; selecting a suitable cab framework structure type from a simply supported beamstructural mechanics model; and calculating the sum of profile sectional moduli of all pillars and top cross beams according to a maximum lateral load Fmax quick calculation formula and a maximum load energy Umax quick calculation formula, selecting suitable profiles based on the sum, and constructing a closed spatial framework structure according to the selected cab framework structure type.

Abstract: Disclosed are an optima design method for a middle cross beam of an ROPS framework and a cab for engineering machines. The optimal design method comprises: solving a height dimension of a middle cross beam when the maximum bending moment on pillars is minimum by analyzing the influence of the height dimension of the middle cross beam in a portal hyperstatic structural mechanics model on the distribution relation of two bending moments on the pillars, to obtain an optimal height dimension relation of the middle cross beam; and obtaining a profile sectional parameter design relation of the middle cross beam by analyzing a design objective that the middle cross beam and the pillars enter a plastic deformation zone at the same time, and using the relation to guide the selection of an ROPS framework structure and profiles to improve the design quality of an ROPS framework.

Abstract: A foldable mechanism comprises a base assembly, two support assemblies, and two driving assemblies. The base assembly includes a bottom seat and two hinge seats respectively fixed to two sides of the bottom seat. The support assembly includes an outer plate member and an inner plate member located between the two outer plate members, the outer plate member and the inner plate member are pivotally connected to the corresponding hinge seat respectively, and pivotal axes of the outer plate members and the inner plate members are parallel to a central axis L of the bottom seat; the driving assembly is connected to and between the bottom seat and the inner plate member corresponding to the driving assembly; and when the foldable mechanism is in a folded state, the driving assemblies respectively drive the corresponding inner plate members to flip toward the bottom seat. Related mobile terminal is also described.

Abstract: This application provides a support assembly and a terminal device, applied to the field of terminal technologies. The support assembly includes: a support member, where the support member has a first side surface and a second side surface that are opposite to each other, and a first end face connected between the first side surface and the second side surface, the first side surface has at least a first bendable area, the first bendable area is connected to the first end face, and a groove is disposed on the first end face; and a bonding structure, where at least a part of the bonding structure is located on the first side surface and the second side surface.

Abstract: An electronic device includes a housing, a flexible display module, a protection plate, a first connector, and a first base plate. The housing includes a rotating assembly and two supporters. The rotating assembly is disposed between the two supporters. The supporter is rotatably connected to the rotating assembly. The flexible display module is covered on the housing. The flexible display module includes a backplane. The backplane includes a bendable area. The bendable area is disposed facing the rotating assembly. The protection plate is disposed between the backplane and the housing. One of the backplane and the protection plate is connected to the first base plate. A part of the protection plate is located between the bendable area and the housing. The first connector connects the backplane and the protection plate. The first connector is disposed on an outer side of the bendable area of the backplane.

Abstract: A foldable mechanism comprises a base assembly, two support assemblies, and two driving assemblies. The base assembly includes a bottom seat and two hinge seats respectively fixed to two sides of the bottom seat. The support assembly includes an outer plate member and an inner plate member located between the two outer plate members, the outer plate member and the inner plate member are pivotally connected to the corresponding hinge seat respectively, and pivotal axes of the outer plate members and the inner plate members are parallel to a central axis L of the bottom seat; the driving assembly is connected to and between the bottom seat and the inner plate member corresponding to the driving assembly; and when the foldable mechanism is in a folded state, the driving assemblies respectively drive the corresponding inner plate members to flip toward the bottom seat. Related mobile terminal is also described.

Abstract: This application relates to a rotating assembly, a foldable mechanism, and a foldable terminal, and relates to the field of terminal technologies. The rotating assembly includes a base, a rotating shaft, and a swing arm, where the base is provided with a rotating shaft through-hole and an arc-shaped first slideway, the first slideway and the rotating shaft through-hole communicate with each other, and axes thereof are parallel to each other; the rotating shaft is provided with an arc-shaped second slideway, an axis of the rotating shaft is parallel to an axis of the second slideway, the second slideway runs through the rotating shaft, and a radius of the second slideway is equal to that of the first slideway; the rotating shaft is located in the rotating shaft through-hole, the first slideway and the second slideway can be connected to each other to form a continuous slideway, and the swing arm is located in the continuous slideway and can slide in the continuous slideway.

Abstract: Disclosed are a foldable assembly of an electronic device and an electronic device. The electronic device may be a terminal product that includes a foldable flexible display, such as a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, a virtual reality device, a notebook computer, a super mobile personal computer, a netbook, or a personal digital assistant. Support plates are respectively disposed between each door plate and the floating plate of the foldable assembly, and a protruding part and a recessed part are disposed on a side of the support plate facing the floating plate. In an unfolded state, a protruding part and a recessed part of two support plates correspondingly fit with each other.