Folding assembly and electronic device

Abstract

This application discloses a folding assembly and an electronic device. The electronic device includes a folding device and a flexible display screen. The folding device is used to support the flexible display screen and includes a first housing, a second housing, and a folding assembly. Through the movement of the folding assembly, the first housing and the second housing can be relatively unfolded to an open state or relatively folded to a closed state. The folding assembly includes a main shaft, a first fixing frame, a first transmission member, a second fixing frame, a second transmission member, and a stop block. When the first housing and the second housing are in the open state, the stop block's first stop face against the first stop end face of the first transmission member and the stop block's second stop face against the second stop end face of the second transmission member ensure that the included angle between the first housing and the second housing does not exceed a preset value, preventing over-folding of the folding device and thus preventing excessive stretching of the flexible display screen, which helps to improve the service life of the flexible display screen.

Description

[0001] This application is a divisional application. The original application has the application number 202210612636.6 and the original application date is May 31, 2022. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of foldable electronic products technology, and more particularly to a foldable component and electronic device. Background Technology

[0003] In recent years, flexible displays have been widely used in various foldable electronic devices due to their lightweight, thinness, and durability. Foldable electronic devices also include folding devices to support the flexible displays. These folding devices typically consist of two housings and a folding assembly connecting the two housings. The two housings fold or unfold relative to each other through the deformation of the folding assembly, thereby causing the flexible displays to fold or unfold.

[0004] Currently, folding devices are prone to over-folding when the two shells are unfolded to the open state, causing the actual angle between the two shells to be greater than the ideal angle. Since the design dimensions and structure of flexible displays are typically based on this ideal angle, over-folding during unfolding stretches the flexible display, severely impacting its lifespan. Summary of the Invention

[0005] This application provides a folding assembly and an electronic device. The electronic device includes a flexible display screen and a folding device supporting the flexible display screen. The folding device includes a first housing, a folding assembly, and a second housing connected in sequence. The folding assembly precisely controls the included angle between two transmission components in the open state through a stop block, thereby controlling the included angle between the first housing and the second housing, preventing over-folding of the folding device, and thus improving the service life of the flexible display screen.

[0006] In a first aspect, this application provides an electronic device having an open state and a closed state. The electronic device includes a folding device and a flexible display screen. The folding device includes a first housing, a second housing, and a folding assembly. The folding assembly connects the first housing and the second housing. Through the movement of the folding assembly, the first housing and the second housing can be relatively unfolded to an open state or relatively folded to a closed state.

[0007] When the folding components are unfolded to the open state, both the folding device and the electronic device are in the open state, and the flexible display screen can be flattened. The flexible display screen can display in full screen, giving the electronic device a larger display area to improve the user's viewing and operating experience. When the folding device is folded to the closed state, both the folding device and the electronic device are in the closed state. The electronic device has a smaller planar size, making it easy for users to carry and store.

[0008] The flexible display screen includes a first non-bending portion, a bending portion, and a second non-bending portion arranged in sequence. The first non-bending portion is fixed to a first housing, and the second non-bending portion is fixed to a second housing. During the process of the first housing and the second housing unfolding or folding relative to each other, the bending portion deforms.

[0009] The folding assembly includes a main shaft, a first fixed frame, a first transmission component, a second fixed frame, a second transmission component, and a stop block. The first fixed frame is fixedly connected to a first housing, and the second fixed frame is fixedly connected to a second housing. A first end of the first transmission component is rotatably connected to the main shaft, and a second end of the first transmission component is connected to the first fixed frame. The first end of the first transmission component has a first stop end face. A first end of the second transmission component is rotatably connected to the main shaft, and a second end of the second transmission component is connected to the second fixed frame. The first end of the second transmission component has a second stop end face. During the relative unfolding of the first and second housings, the first stop end face of the first transmission component approaches the first stop surface, and the second stop end face of the second transmission component approaches the second stop surface. When the first and second housings are in the open state, the first stop end face of the first transmission component abuts against the first stop surface, and the second stop end face of the second transmission component abuts against the second stop surface.

[0010] The stop block is used to limit the movement of the first and second transmission components. When the angle between the first and second transmission components reaches a preset value (i.e., when the folding assembly is relatively unfolded to the open state), the stop block's limiting effect on the first and second transmission components ensures that the angle between them will not exceed the preset value. Consequently, the angle between the first and second housings, and the angle between the first and second non-bent portions of the flexible display screen, will not exceed the preset values, effectively preventing over-folding of the flexible display screen and increasing its lifespan. Furthermore, by placing the first and second stop surfaces on the same stop block, the stopping effect on both transmission components can be achieved, effectively reducing the number of stop blocks required for the folding assembly and reducing the space occupied by the stop blocks within the folding assembly.

[0011] In some possible implementations, the main shaft has a main support surface and a center surface. The main support surface supports the bending section, and the center surface is perpendicular to the main support surface and parallel to the extension direction of the main shaft. The first and second stop surfaces are symmetrical about the center surface, as are the first and second transmission components. When the folding device is unfolded to the open state, the first stop surface abuts against the first transmission component, while the second stop surface simultaneously abuts against the second transmission component. At this time, the force exerted by the first transmission component on the stop block can offset part of the force exerted by the second transmission component on the stop block, resulting in high stability of the entire folding assembly. Furthermore, the deformation of the stop block after compression is small, and the stop block has high precision in controlling the angle between the first and second transmission components.

[0012] In some possible implementations, the stop block is fixed to the spindle, and the first stop surface is parallel to the center plane. When the electronic device is in the open state, the first swing arm exerts a force perpendicular to the center plane on the stop block, and the second swing arm exerts a force perpendicular to the center plane on the stop block, and the two forces cancel each other out. This reduces the force at the connection between the stop block and the spindle, reduces the deformation of the spindle, helps ensure the flatness of the spindle, and optimizes the overall lighting and shadow of the device.

[0013] In some possible implementations, the spindle includes an inner spindle and a housing, with a stop block located between the spindle and the housing. The inner spindle, the stop block, and the housing are locked together by fasteners. In this case, the stop block is simultaneously fixed by the inner spindle and the housing, which helps to reduce the pressure exerted by the stop block on the inner spindle, reduce the deformation of the inner spindle, and improve the flatness of the inner spindle.

[0014] In some possible implementations, the first transmission component is a first swing arm, with its second end slidably connected to a first fixed frame; the second transmission component is a second swing arm, with its second end slidably connected to a second fixed frame. In this case, the angle between the first and second swing arms can be controlled by limiting the movement of the stop block, thereby controlling the angle between the first and second housings when the electronic device is in the open state.

[0015] In some possible implementations, the folding assembly further includes a locking component, which includes a fixing part, a first locking part, and a second locking part. The first locking part and the second locking part are respectively fixed to both sides of the fixing part. The fixing part is fixedly connected to the main shaft. The first locking part engages with the first swing arm to limit the movement of the first swing arm in the extension direction of the main shaft. The second locking part engages with the second swing arm to limit the movement of the second swing arm in the extension direction of the main shaft. The stop block includes a first stop part and a second stop part. The first stop part is fixed to the first locking part, and a first stop surface is formed on the end face of the first stop part facing away from the fixing part. The second stop part is fixed to the second locking part, and a second stop surface is formed on the end face of the second stop part facing away from the fixing part.

[0016] At this point, the locking component can be fixedly connected to the spindle, and the stop block can be indirectly fixed to the spindle through the locking component. Furthermore, by locking the first and second swing arms into place with the locking component, a relatively fixed connection between the first and second swing arms and the spindle can be indirectly achieved.

[0017] In some possible implementations, the locking component and the stop block together form a one-piece molded limiting connector. This eliminates the need for separate assembly of the locking component and the stop block, simplifying the assembly process for folding components and electronic devices. Furthermore, the one-piece structure increases the connection strength between the locking component and the stop block.

[0018] In some possible implementations, the angle between the first stop surface and the center surface is greater than 0°. Furthermore, the folding assembly also includes an adjustment component for adjusting the relative position of the stop block and the main shaft in the thickness direction of the folding assembly. In the open state, by adjusting the relative position of the adjustment component and the main shaft in the thickness direction of the folding assembly, the relative position of the stop block and the main shaft in the thickness direction of the folding assembly is adjusted. Therefore, the abutting position between the first stop surface and the first stop end face changes, and the abutting position between the second stop surface and the second stop end face changes, allowing for further relative rotation between the first and second swing arms. That is, in the open state, the angle between the first and second swing arms can be finely adjusted by the adjustment component to ensure that the angle between the first and second housings is a preset value, preventing over-folding or compression of the flexible display screen.

[0019] In some possible implementations, the adjustment component includes a limiting member and an elastic member. The limiting member includes a limiting end and a connecting end. The limiting end of the limiting member is located on the side of the stop block facing away from the main shaft. The connecting end of the limiting member passes through the stop block and is threaded to the main shaft. The elastic member abuts against the stop block and the main shaft. At this time, by rotating the limiting member, the relative position of the limiting end and the main shaft in the direction perpendicular to the main support surface can be adjusted. With the stretching or compression of the elastic member, the stop block continuously abuts against the limiting member, thereby adjusting the relative position of the stop block and the main shaft in the direction perpendicular to the main support surface. This achieves the adjustment of the angle at which the folding component unfolds in the open state, ensuring that the angle between the first and second housings is a preset value.

[0020] In some possible implementations, the folding assembly may not have an adjustment component; instead, the size of the stop block's movement space perpendicular to the main support surface can be adjusted solely by fasteners. Under the restraining action of the first and second transmission components, the stop block will automatically move away from the main shaft and eventually abut against the fasteners. Therefore, the relative position of the stop block and the main shaft in the direction perpendicular to the main support surface can be adjusted to achieve the purpose of adjusting the angle between the first and second transmission components when in the open state.

[0021] In some possible implementations, the spindle has a protrusion facing away from the main support surface. The stop block includes a main body, a first stop portion, and a second stop portion. The first stop portion is fixed to one side of the main body, and a first stop surface is formed on the end face of the first stop portion facing away from the main body. The second stop portion is fixed to the other side of the main body, and a second stop surface is formed on the end face of the second stop portion facing away from the main body. The main body has a through hole and a limiting groove. The limiting groove is located on the side of the through hole near the spindle and communicates with the through hole. The protrusion is embedded in the limiting groove, and the connecting end of the limiting member is threadedly connected to the protrusion through the through hole and the limiting groove. At this time, the limiting member can pass through the through hole of the main body and be threadedly connected to the protrusion to achieve the positioning of the stop block on the spindle. In addition, the cooperation between the protrusion itself and the limiting groove can help position the stop block during the assembly of the spindle, and at the same time prevent the stop block from moving relative to the spindle when the positioning of the limiting member fails, thus increasing the structural stability of the stop block.

[0022] In some possible implementations, the angle between the first stop surface and the center surface is within the range of 0° to 45°. In this case, the component of the force acting on the first stop surface from the first transmission member perpendicular to the main support surface is greater than the component acting parallel to the main support surface, and the component of the force acting on the second stop surface from the second transmission member perpendicular to the main support surface is greater than the component acting parallel to the main support surface. Since the first and second stop surfaces, as well as the first and second transmission members, are symmetrical about the main support surface, the forces acting on the stop block from the first and second transmission members parallel to the main support surface will cancel each other out, leaving only a smaller component perpendicular to the main support surface. Therefore, by controlling the angle between the first stop surface and the center surface, the resultant force from the first and second transmission members acting on the stop block can be effectively reduced, thereby reducing the force on the fixing structure between the stop block and the main shaft. This helps increase the structural safety of the fixing structure and the safety of the folding assembly.

[0023] In one possible implementation, the first stop surface and the first stop end surface can be curved surfaces; and / or the second stop surface and the second stop end surface can be curved surfaces. In this case, the contact area between the first stop surface and the first stop end surface and the contact area between the second stop surface and the second stop end surface in the open state can be increased, which helps to reduce the local deformation of the stop block when it is squeezed and helps to control the accuracy of the included angle between the first swing arm and the second swing arm in the open state.

[0024] In some possible implementations, the first transmission component is a first swing arm, with its second end slidably connected to a first fixed frame; the second transmission component is a second swing arm, with its second end slidably connected to a second fixed frame. In this case, the angle between the first and second swing arms can be controlled by limiting the movement of the stop block, thereby controlling the angle between the first and second housings when the electronic device is in the open state.

[0025] In some possible implementations, the folding assembly further includes a locking component, which comprises a fixing part, a first locking part, and a second locking part. The first and second locking parts are respectively fixed to both sides of the fixing part. The fixing part is fixedly connected to the main shaft. The first locking part engages with the first swing arm to restrict the movement of the first swing arm in the extension direction of the main shaft. The second locking part engages with the second swing arm to restrict the movement of the second swing arm in the extension direction of the main shaft. In this case, the locking component can achieve a fixed connection between the first swing arm and the main shaft, and a fixed connection between the second swing arm and the main shaft.

[0026] In some possible implementations, the fixing components are stacked between the stop blocks and the main shaft. In this case, the stop blocks can make full use of the thickness space perpendicular to the main support surface, increasing the space utilization of the main shaft and facilitating the thinning of the folding assembly. In addition, this stacked structural design allows the fixing components and locking components to be fixed to the main shaft by only one fixing structure, effectively reducing the number of fixing structures, simplifying the structure of the main shaft, and reducing the production cost of the folding assembly.

[0027] In some possible implementations, the first end of the first swing arm is provided with a first clearance space, and a first stop face is formed on the wall of the first clearance space, with the first stop face at least partially located within the first clearance space. The first end of the second swing arm is provided with a second clearance space, and a second stop face is formed on the wall of the second clearance space, with the second stop face at least partially located within the second clearance space. In this case, the first clearance space can provide clearance for the first stop face during the rotation of the first swing arm, and the second clearance space can provide clearance for the second stop face during the rotation of the second swing arm. This prevents interference between the first stop face and the first end of the first swing arm, and interference between the second stop face and the first end of the second swing arm, during the relative unfolding or folding of the folding assembly, thus ensuring the smoothness and reliability of the mechanism's movement.

[0028] In some possible implementations, the first end of the first swing arm further includes a first compensation block, and the main shaft is provided with a first clearance hole. When the first housing and the second housing are in the open state, the first compensation block is at least partially located in the first clearance hole, and the first compensation block is used to assist in supporting the bending part. At this time, the first clearance hole can prevent the first swing arm from interfering with the main shaft when rotating, so as to ensure the smoothness and reliability of the mechanism's movement. Furthermore, when the folding assembly is in the open state, the first compensation block can fill part of the first clearance hole, providing a more complete support environment for the entire folding assembly. In some possible implementations, the stop block also includes a first clearance groove located between the first stop surface and the second stop surface. When the first housing and the second housing are in a closed state, the first compensation block is at least partially located in the first clearance groove. When the folding assembly is folded relative to each other, the first compensation block can rotate into the first clearance groove. The first clearance groove prevents interference between the first compensation block and the stop block, ensuring smooth and reliable movement of the mechanism.

[0029] In some possible implementations, the folding assembly also includes a damping component mounted on the main shaft. The damping component connects to the first end of the first swing arm and the first end of the second swing arm, providing resistance during the relative rotation of the first and second swing arms. This results in a noticeable resistance when the user opens the electronic device, providing a better tactile experience. Furthermore, when the electronic device is open, it is less likely to close due to slight external vibrations, helping to maintain its open position.

[0030] In some possible implementations, the damping component includes a first locking block, a second locking block, and an elastic component. The first locking block has multiple first protrusion groups, and the second locking block has multiple second protrusion groups, with each group corresponding to the other. The first end of the first swing arm includes multiple first protrusions and multiple second protrusions arranged opposite each other, and the first end of the second swing arm also includes multiple first protrusions and multiple second protrusions arranged opposite each other. Both the first ends of the first and second swing arms are located between the first and second locking blocks. The elastic component is located on the side of the second locking block opposite to the first locking block. The elastic component is used to generate elastic force so that the first end of the first swing arm and the first end of the second swing arm both abut against the first locking block and the second locking block. The multiple first protrusions of the first swing arm cooperate with one of the first protrusion groups to form a locking structure. The multiple second protrusions of the first swing arm cooperate with one of the second protrusion groups to form a locking structure. The multiple first protrusions of the second swing arm cooperate with another first protrusion group to form a locking structure. The multiple second protrusions of the second swing arm cooperate with another second protrusion group to form a locking structure.

[0031] At this time, a first slot can be formed between adjacent first protrusions in the first protrusion group, and a second slot can be formed between adjacent second protrusions in the second protrusion group. The first protrusion of the first swing arm engages in one of the first slots of the first locking block, the second protrusion of the first swing arm engages in one of the second slots of the second locking block, the first protrusion of the second swing arm engages in another slot of the first locking block, and the second protrusion of the second swing arm engages in another slot of the second locking block; the elastic component is in a compressed state. When the first swing arm and the second swing arm rotate relative to each other, the first protrusion will rotate relative to the first protrusion group, and the first protrusion will form a new engaging structure with the first protrusion group. When the first protrusion crosses the first protrusion of the first protrusion group, the damping component generates a damping force on the first swing arm and the second swing arm. Furthermore, by changing the structural design of the protrusion, after the first protrusion crosses the first protrusion of the first protrusion group, the damping component can also generate a pushing force on the first swing arm and the second swing arm. Therefore, users can feel a noticeable pushing force and resistance when turning the electronic device on or off, increasing user comfort. Secondly, when the electronic device is in the open state, the damping force makes it less prone to folding due to external shaking, which helps increase the stability of the electronic device during use.

[0032] In some possible implementations, the first transmission component is a first rotating arm, with its second end rotatably connected to a first fixed frame; the second transmission component is a second rotating arm, with its second end rotatably connected to a second fixed frame. In this case, the angle between the first and second rotating arms can be controlled by limiting the movement of the stop block, thereby controlling the angle between the first and second housings when the electronic device is in the open state.

[0033] Secondly, this application provides a folding assembly applied to an electronic device. The folding assembly supports the bent portion of the screen of the electronic device and has an open state and a closed state.

[0034] The folding assembly includes a main shaft, a first fixed frame, a first transmission member, a second fixed frame, a second transmission member, and a stop block. The first end of the first transmission member is rotatably connected to the main shaft, and the second end of the first transmission member is connected to the first fixed frame. The first end of the first transmission member has a first stop end face. The first end of the second transmission member is rotatably connected to the main shaft, and the second end of the second transmission member is connected to the second fixed frame. The first end of the second transmission member has a second stop end face. During the relative unfolding of the first and second housings, the first stop end face of the first transmission member approaches the first stop surface, and the second stop end face of the second transmission member approaches the second stop surface. When the folding assembly is in the open state, the first stop end face of the first transmission member abuts against the first stop surface, and the second stop end face of the second transmission member abuts against the second stop surface.

[0035] The stop block is used to limit the movement of the first and second transmission components. When the included angle between the first and second transmission components reaches a preset value (that is, when the folding assembly is relatively unfolded to the open state), the stop block's limiting effect on the first and second transmission components ensures that the included angle between them will not exceed the preset value. Furthermore, by placing the first and second stop surfaces on the same stop block, the stopping effect on both transmission components can be achieved, effectively reducing the number of stop blocks required for the folding assembly and reducing the space occupied by the stop blocks within the folding assembly.

[0036] In some possible implementations, the main shaft has a main support surface and a center surface. The main support surface supports the bending section, and the center surface is perpendicular to the main support surface and parallel to the extension direction of the main shaft. The first and second stop surfaces are symmetrical about the center surface, as are the first and second transmission components. When the folding device is unfolded to the open state, the first stop surface abuts against the first transmission component, while the second stop surface simultaneously abuts against the second transmission component. At this time, the force exerted by the first transmission component on the stop block can offset part of the force exerted by the second transmission component on the stop block, resulting in high stability of the entire folding assembly. Furthermore, the deformation of the stop block after compression is small, and the stop block has high precision in controlling the angle between the first and second transmission components.

[0037] In some possible implementations, the stop block is fixed to the main shaft, and the first stop surface is parallel to the center plane. When the folding assembly is in the open state, the first swing arm exerts a force perpendicular to the center plane on the stop block, and the second swing arm exerts a force perpendicular to the center plane on the stop block, and the two forces cancel each other out. This reduces the force at the connection between the stop block and the main shaft, reduces the deformation of the main shaft, and helps ensure the flatness of the main shaft.

[0038] In some possible implementations, the spindle includes an inner spindle and a housing, with a stop block located between the spindle and the housing. The inner spindle, the stop block, and the housing are locked together by fasteners. In this case, the stop block is simultaneously fixed by the inner spindle and the housing, which helps to reduce the pressure exerted by the stop block on the inner spindle, reduce the deformation of the inner spindle, and improve the flatness of the inner spindle.

[0039] In some possible implementations, the first transmission component is a first swing arm, with its second end slidably connected to a first fixed frame; the second transmission component is a second swing arm, with its second end slidably connected to a second fixed frame. In this case, the included angle of the entire folding assembly in its open state can be controlled by limiting the movement of the first and second swing arms with a stop block.

[0040] In some possible implementations, the folding assembly further includes a locking component, which includes a fixing part, a first locking part, and a second locking part. The first locking part and the second locking part are respectively fixed to both sides of the fixing part. The fixing part is fixedly connected to the main shaft. The first locking part engages with the first swing arm to limit the movement of the first swing arm in the extension direction of the main shaft. The second locking part engages with the second swing arm to limit the movement of the second swing arm in the extension direction of the main shaft. The stop block includes a first stop part and a second stop part. The first stop part is fixed to the first locking part, and a first stop surface is formed on the end face of the first stop part facing away from the fixing part. The second stop part is fixed to the second locking part, and a second stop surface is formed on the end face of the second stop part facing away from the fixing part.

[0041] At this point, the locking component can be fixedly connected to the spindle, and the stop block can be indirectly fixed to the spindle through the locking component. Furthermore, by locking the first and second swing arms into place with the locking component, a relatively fixed connection between the first and second swing arms and the spindle can be indirectly achieved.

[0042] In some possible implementations, the locking component and the stop block together form a one-piece molded limiting connector. This eliminates the need for separate assembly of the locking component and the stop block, simplifying the assembly process for folding components and electronic devices. Furthermore, the one-piece structure increases the connection strength between the locking component and the stop block.

[0043] In some possible implementations, the angle between the first stop surface and the center surface is greater than 0°. Furthermore, the folding assembly also includes an adjustment component for adjusting the relative position of the stop block and the main shaft in the thickness direction of the folding assembly. In the open state, by adjusting the relative position of the adjustment component and the main shaft in the thickness direction of the folding assembly, the relative position of the stop block and the main shaft in the thickness direction of the folding assembly is adjusted. Therefore, the abutting position between the first stop surface and the first stop end face changes, and the abutting position between the second stop surface and the second stop end face changes, allowing for further relative rotation between the first and second swing arms. That is, in the open state, the angle between the first and second swing arms can be finely adjusted by the adjustment component to ensure that the angle between the first and second swing arms is a preset value and to prevent excessive compression of the main shaft by the first and second swing arms.

[0044] In some possible implementations, the adjustment component includes a limiting member and an elastic member. The limiting member includes a limiting end and a connecting end. The limiting end of the limiting member is located on the side of the stop block facing away from the main shaft. The connecting end of the limiting member passes through the stop block and is threaded to the main shaft. The elastic member abuts against the stop block and the main shaft. At this time, by rotating the limiting member, the relative position of the limiting end and the main shaft in the direction perpendicular to the main support surface can be adjusted. With the stretching or compression of the elastic member, the stop block continuously abuts against the limiting member, thereby adjusting the relative position of the stop block and the main shaft in the direction perpendicular to the main support surface. This achieves the adjustment of the angle at which the folding component unfolds in the open state, ensuring that the angle between the first and second swing arms is a preset value.

[0045] In some possible implementations, the folding assembly may not have an adjustment component; instead, the size of the stop block's movement space perpendicular to the main support surface can be adjusted solely by fasteners. Under the restraining action of the first and second transmission components, the stop block will automatically move away from the main shaft and eventually abut against the fasteners. Therefore, the relative position of the stop block and the main shaft in the direction perpendicular to the main support surface can be adjusted to achieve the purpose of adjusting the angle between the first and second transmission components when in the open state.

[0046] In some possible implementations, the spindle has a protrusion facing away from the main support surface. The stop block includes a main body, a first stop portion, and a second stop portion. The first stop portion is fixed to one side of the main body, and a first stop surface is formed on the end face of the first stop portion facing away from the main body. The second stop portion is fixed to the other side of the main body, and a second stop surface is formed on the end face of the second stop portion facing away from the main body. The main body has a through hole and a limiting groove. The limiting groove is located on the side of the through hole near the spindle and communicates with the through hole. The protrusion is embedded in the limiting groove, and the connecting end of the limiting member is threadedly connected to the protrusion through the through hole and the limiting groove. At this time, the limiting member can pass through the through hole of the main body and be threadedly connected to the protrusion to achieve the positioning of the stop block on the spindle. In addition, the cooperation between the protrusion itself and the limiting groove can help position the stop block during the assembly of the spindle, and at the same time prevent the stop block from moving relative to the spindle when the positioning of the limiting member fails, thus increasing the structural stability of the stop block.

[0047] In some possible implementations, the angle between the first stop surface and the center surface is within the range of 0° to 45°. In this case, the component of the force acting on the first stop surface from the first transmission member perpendicular to the main support surface is greater than the component acting parallel to the main support surface, and the component of the force acting on the second stop surface from the second transmission member perpendicular to the main support surface is greater than the component acting parallel to the main support surface. Since the first and second stop surfaces, as well as the first and second transmission members, are symmetrical about the main support surface, the forces acting on the stop block from the first and second transmission members parallel to the main support surface will cancel each other out, leaving only a smaller component perpendicular to the main support surface. Therefore, by controlling the angle between the first stop surface and the center surface, the resultant force from the first and second transmission members acting on the stop block can be effectively reduced, thereby reducing the force on the fixing structure between the stop block and the main shaft. This helps increase the structural safety of the fixing structure and the safety of the folding assembly.

[0048] In one possible implementation, the first stop surface and the first stop end surface can be curved surfaces; and / or the second stop surface and the second stop end surface can be curved surfaces. In this case, the contact area between the first stop surface and the first stop end surface and the contact area between the second stop surface and the second stop end surface in the open state can be increased, which helps to reduce the local deformation of the stop block when it is squeezed and helps to control the accuracy of the included angle between the first swing arm and the second swing arm in the open state.

[0049] In some possible implementations, the first transmission component is a first swing arm, with its second end slidably connected to a first fixed frame; the second transmission component is a second swing arm, with its second end slidably connected to a second fixed frame. In this case, the angle between the first and second swing arms can be controlled by limiting the movement of the stop block, thereby controlling the angle between the first and second housings when the electronic device is in the open state.

[0050] In some possible implementations, the folding assembly further includes a locking component, which comprises a fixing part, a first locking part, and a second locking part. The first and second locking parts are respectively fixed to both sides of the fixing part. The fixing part is fixedly connected to the main shaft. The first locking part engages with the first swing arm to restrict the movement of the first swing arm in the extension direction of the main shaft. The second locking part engages with the second swing arm to restrict the movement of the second swing arm in the extension direction of the main shaft. In this case, the locking component can achieve a fixed connection between the first swing arm and the main shaft, and a fixed connection between the second swing arm and the main shaft.

[0051] In some possible implementations, the fixing components are stacked between the stop blocks and the main shaft. In this case, the stop blocks can make full use of the thickness space perpendicular to the main support surface, increasing the space utilization of the main shaft and facilitating the thinning of the folding assembly. In addition, this stacked structural design allows the fixing components and locking components to be fixed to the main shaft by only one fixing structure, effectively reducing the number of fixing structures, simplifying the structure of the main shaft, and reducing the production cost of the folding assembly.

[0052] In some possible implementations, the first end of the first swing arm is provided with a first clearance space, and a first stop face is formed on the wall of the first clearance space, with the first stop face at least partially located within the first clearance space. The first end of the second swing arm is provided with a second clearance space, and a second stop face is formed on the wall of the second clearance space, with the second stop face at least partially located within the second clearance space. In this case, the first clearance space can provide clearance for the first stop face during the rotation of the first swing arm, and the second clearance space can provide clearance for the second stop face during the rotation of the second swing arm. This prevents interference between the first stop face and the first end of the first swing arm, and interference between the second stop face and the first end of the second swing arm, during the relative unfolding or folding of the folding assembly, thus ensuring the smoothness and reliability of the mechanism's movement.

[0053] In some possible implementations, the first end of the first swing arm further includes a first compensation block, and the main shaft is provided with a first clearance hole. When the folding assembly is in the open state, the first compensation block is at least partially located in the first clearance hole, and the first compensation block is used to assist in supporting the bending part. At this time, the first clearance hole can prevent the first swing arm from interfering with the main shaft when rotating, so as to ensure the smoothness and reliability of the mechanism's movement. Furthermore, when the folding assembly is in the open state, the first compensation block can fill part of the first clearance hole, providing a more complete support environment for the entire folding assembly. In some possible implementations, the stop block also includes a first clearance groove located between the first stop surface and the second stop surface. When the folding assembly is in the closed state, the first compensation block is at least partially located in the first clearance groove. When the folding assembly is folded relative to each other, the first compensation block can rotate into the first clearance groove. The first clearance groove prevents interference between the first compensation block and the stop block, ensuring smooth and reliable movement of the mechanism.

[0054] In some possible implementations, the folding assembly also includes a damping component mounted on the main shaft. The damping component connects to the first end of the first swing arm and the first end of the second swing arm, providing resistance during the relative rotation of the first and second swing arms. This results in a noticeable resistance when the user opens the electronic device, providing a better tactile experience. Furthermore, when the electronic device is open, it is less likely to close due to slight external vibrations, helping to maintain its open position.

[0055] In some possible implementations, the damping component includes a first locking block, a second locking block, and an elastic component. The first locking block has multiple first protrusion groups, and the second locking block has multiple second protrusion groups, with each group corresponding to the other. The first end of the first swing arm includes multiple first protrusions and multiple second protrusions arranged opposite each other, and the first end of the second swing arm also includes multiple first protrusions and multiple second protrusions arranged opposite each other. Both the first ends of the first and second swing arms are located between the first and second locking blocks. The elastic component is located on the side of the second locking block opposite to the first locking block. The elastic component is used to generate elastic force so that the first end of the first swing arm and the first end of the second swing arm both abut against the first locking block and the second locking block. The multiple first protrusions of the first swing arm cooperate with one of the first protrusion groups to form a locking structure. The multiple second protrusions of the first swing arm cooperate with one of the second protrusion groups to form a locking structure. The multiple first protrusions of the second swing arm cooperate with another first protrusion group to form a locking structure. The multiple second protrusions of the second swing arm cooperate with another second protrusion group to form a locking structure.

[0056] At this time, a first slot can be formed between adjacent first protrusions in the first protrusion group, and a second slot can be formed between adjacent second protrusions in the second protrusion group. The first protrusion of the first swing arm engages in one of the first slots of the first locking block, the second protrusion of the first swing arm engages in one of the second slots of the second locking block, the first protrusion of the second swing arm engages in another slot of the first locking block, and the second protrusion of the second swing arm engages in another slot of the second locking block; the elastic component is in a compressed state. When the first swing arm and the second swing arm rotate relative to each other, the first protrusion will rotate relative to the first protrusion group, and the first protrusion will form a new engaging structure with the first protrusion group. When the first protrusion crosses the first protrusion of the first protrusion group, the damping component generates a damping force on the first swing arm and the second swing arm. Furthermore, by changing the structural design of the protrusion, after the first protrusion crosses the first protrusion of the first protrusion group, the damping component can also generate a pushing force on the first swing arm and the second swing arm. Therefore, users can feel a noticeable pushing force and resistance when turning the electronic device on or off, increasing user comfort. Secondly, when the electronic device is in the open state, the damping force makes it less prone to folding due to external shaking, which helps increase the stability of the electronic device during use.

[0057] In some possible implementations, the first transmission component is a first rotating arm, with its second end rotatably connected to a first fixed frame; the second transmission component is a second rotating arm, with its second end rotatably connected to a second fixed frame. In this case, the angle between the first and second swing arms when the entire folding assembly is in the open state can be controlled by limiting the movement of the first and second rotating arms using a stop block.

[0058] In this application, the flexible display screen can be unfolded or folded along with the folding assembly. When the electronic device is in the open state, the angle between the first and second transmission components in the folding assembly is controlled by a stop block, thereby controlling the angle between the first and second housings. Therefore, the folding device will not over-fold, and the folding device will not excessively stretch the flexible display screen, which helps increase the service life of the flexible display screen. If, during the manufacturing and assembly of the folding device's parts, slight deviations occur due to equipment, processes, or other reasons, resulting in a deviation between the angle between the first rotating component and the second transmission component when the folding device is in the open state and a preset value, the angle between the first and second transmission components in the open state can be adjusted by adjusting the assembly to ensure that the angle between the first and second transmission components in the open state is the preset value, preventing over-folding or compression of the flexible display screen and further increasing its service life. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the structure of an electronic device in the open state provided in this embodiment; Figure 2 yes Figure 1 A schematic diagram of the electronic device in an intermediate state; Figure 3 yes Figure 1 The diagram shows the structure of the electronic device when it is in a closed state. Figure 4 yes Figure 1 A partially exploded structural diagram of the electronic device shown. Figure 5 yes Figure 3 The exploded structure diagram of the folding component shown; Figure 6 yes Figure 5 The diagram shows the exploded structure of the folding component after it has been folded left and right. Figure 7 yes Figure 5 The diagram shows the structure of the main shaft. Figure 8 yes Figure 7 A schematic diagram of the main shaft at another angle; Figure 9 yes Figure 7 A schematic diagram of the exploded structure of the main shaft shown. Figure 10 yes Figure 8 A schematic diagram of the exploded structure of the main shaft shown. Figure 11 yes Figure 7 A schematic diagram of the cross-sectional structure of the main shaft after it has been cut along section AA; Figure 12 yes Figure 7 A schematic diagram of the cross-sectional structure of the main shaft after it has been cut along section BB. Figure 13 yes Figure 5 The diagram shows the structure of the bottom connecting component. Figure 14 yes Figure 13 A partially exploded structural diagram of the bottom connecting component is shown. Figure 15 yes Figure 14 A partial structural schematic diagram of the control component shown; Figure 16 yes Figure 15 A schematic diagram of the exploded structure shown; Figure 17A yes Figure 14 The diagram shows the structure of the first swing arm. Figure 17B yes Figure 17A The diagram shows the structure of the first swing arm at another angle; Figure 18A yes Figure 14 The diagram shows the structure of the second swing arm. Figure 18B yes Figure 18A The diagram shows the structure of the second swing arm at another angle; Figure 19 yes Figure 16 A partial structural schematic diagram of the control component shown; Figure 20 yes Figure 19 A schematic diagram of the structure shown from another angle; Figure 21 yes Figure 15 The diagram shows the structure of the locking component; Figure 22A yes Figure 15 A schematic diagram of the cross-sectional structure of the control component shown after it has been cut along section CC. Figure 22B yes Figure 15 A schematic diagram of the cross-sectional structure of the control component shown after it has been cut along section DD. Figure 23 yes Figure 15 A schematic diagram of the cross-sectional structure of the control component shown after it has been cut along section EE; Figure 24A yes Figure 14 The diagram shows the structure of the stop block. Figure 24B yes Figure 24A A schematic diagram of the stop block after it has been flipped left and right. Figure 25 yes Figure 14The diagram shows the structure of the adjustment component. Figure 26 yes Figure 13 The bottom connecting component shown has a partial structure and Figure 9 A schematic diagram of the assembly structure of the main inner shaft is shown. Figure 27A yes Figure 26 A schematic diagram of the cross-sectional structure after the structure shown is cut along the section at FF. Figure 27B yes Figure 27A A partial schematic diagram of the structure shown from another angle; Figure 28A yes Figure 27B A schematic diagram of the structure shown in another embodiment; Figure 28B yes Figure 27B A schematic diagram of the structure shown in another embodiment; Figure 28C yes Figure 27B A schematic diagram of the structure shown in another embodiment; Figure 28D yes Figure 27B A schematic diagram of the structure in another embodiment; Figure 28E This is a structural schematic diagram of the limiting connector; Figure 28F yes Figure 28E A schematic diagram of the structure shown from another perspective; Figure 28G yes Figure 17A A schematic diagram of the structure shown in another embodiment; Figure 28H yes Figure 26 A partial structural diagram in another embodiment; Figure 28I yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section LL; Figure 28J yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section MM; Figure 28K yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section NN; Figure 29 yes Figure 14 The diagram shows the structure of the first rotating arm. Figure 30 yes Figure 29 The diagram shows the structure of the first rotating arm at another angle; Figure 31A yes Figure 14 The diagram shows the structure of the first fixing frame. Figure 31B yes Figure 14 The diagram shows the structure of the first fixing frame at another angle; Figure 32A yes Figure 14 The diagram shows the structure of the second fixing frame; Figure 32B yes Figure 14 The diagram shows the structure of the second fixing frame at another angle; Figure 33 This is a schematic diagram of the assembly structure after the bottom connecting component and the main inner shaft are installed; Figure 34 yes Figure 33 A schematic diagram of the structure shown after assembly with the bottom cover; Figure 35 yes Figure 34 A schematic diagram of the cross-sectional structure after the structure shown is cut along the GG section; Figure 36 yes Figure 34 A schematic diagram of the cross-sectional structure after the structure shown is cut along section HH. Figure 37 yes Figure 5 A partial structural schematic diagram of the first and second support plates shown. Figure 38 This is a partially enlarged structural diagram of the folding component at the bottom connecting component; Figure 39 yes Figure 38 A schematic diagram of the structure after it has been folded left and right. Figure 40 yes Figure 38 A schematic diagram of the cross-sectional structure after being cut along section II; Figure 41 yes Figure 38 A schematic diagram of the cross-sectional structure after cutting along section JJ; Figure 42 yes Figure 38 A schematic diagram of the cross-sectional structure after being cut along section KK; Figure 43 This is a schematic diagram of the internal structure of a portion of the electronic device of this application in some other embodiments. Detailed Implementation

[0060] The following embodiments of this application will be described in conjunction with the accompanying drawings.

[0061] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the components can rotate relative to each other after connection. "Sliding connection" refers to a connection where the components can slide relative to each other after connection. The directional terms mentioned in the embodiments of this application, such as "up," "down," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly specifying a number of technical features. Therefore, features defined as "first" and "second" can explicitly or implicitly include one or more of those features. Wherein, "two components forming an integrated structure through a one-piece molding process" means that during the formation of one of the two components, that component is already connected to the other component, without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to join the two components together.

[0062] This application provides an electronic device including a folding device and a flexible display screen fixed to the folding device. The folding device includes a folding assembly and two housings. The folding assembly can be unfolded to an open state, folded to a closed state, or in an intermediate state between the open and closed states. The flexible display screen unfolds and folds with the folding device. The folding assembly can precisely control the included angle between the two housings in the open state through a stop-fit ​​structure, so that the included angle between the two housings is adapted to the design dimensions of the flexible display screen. This helps to reduce the risk of damage to the flexible display screen due to the pulling of the folding device, thereby improving the reliability of the flexible display screen and also enhancing the user's visual experience.

[0063] The electronic device can be a foldable electronic product such as a mobile phone, tablet computer, laptop computer, or wearable device. Wearable devices can be smartwatches, smart bracelets, etc. This application uses a mobile phone as an example for illustration.

[0064] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of an electronic device in the open state provided in this embodiment. Figure 2 yes Figure 1The diagram shown is a structural schematic of the electronic device in an intermediate state. Figure 3 yes Figure 1 The diagram shows the structure of the electronic device when it is in a closed state.

[0065] In some embodiments, the electronic device 100 may include a flexible display screen 20 and a folding device 10, with the flexible display screen 20 mounted on the folding device 10. The flexible display screen 20 is used to display images. Figure 1 As shown, the folding device 10 can be unfolded to an open state; as Figure 3 As shown, the folding device 10 can also be folded into a closed state; as Figure 2 As shown, the folding device 10 can also be unfolded or folded to an intermediate state, which can be any state between the open and closed states. The flexible display screen 20 moves with the folding device 10, which can cause the flexible display screen 20 to unfold or fold, so that the electronic device 100 can be unfolded to the open state or folded to the closed state. When the electronic device 100 is in the closed state, the flexible display screen 20 is located inside the folding device 10.

[0066] The folding device 10 includes a first housing 1, a second housing 2, and a folding assembly 3. The folding assembly 3 connects the first housing 1 and the second housing 2. Through the movement of the folding assembly 3, the first housing 1 and the second housing 2 can be relatively unfolded to an open state or relatively folded to a closed state. Figure 1 As shown, the first housing 1 and the second housing 2 can be unfolded relative to each other to an open state, so that the folding assembly 3, the folding device 10, and the electronic device 100 are all in an open state, and the flexible display screen 20 unfolds along with the folding device 10. For example, when the folding device 10 is in the open state, the angle between the first housing 1 and the second housing 2 can be 180°, and the flexible display screen 20 is in a flattened state.

[0067] like Figure 3 As shown, the first housing 1 and the second housing 2 can be folded relative to each other to a closed state, so that the folding assembly 3, the folding device 10, and the electronic device 100 are all in a closed state, and the flexible display screen 20 folds along with the housing. The flexible display screen 20 is located inside the folding device 10 and is wrapped by the folding device 10. It can be understood that when the housing is in the closed state, the included angle between the first housing 1 and the second housing 2 can be 0°.

[0068] like Figure 2 As shown, the first housing 1 and the second housing 2 can also be folded or unfolded relative to each other to an intermediate state, so that the folding assembly 3, the folding device 10, and the electronic device 100 are all in an intermediate state. The intermediate state can be any state between the open state and the closed state, and the flexible display screen 20 will also change with the folding device 10.

[0069] In this embodiment, the flexible display screen 20 can be unfolded and folded along with the folding device 10. When the electronic device 100 is in the open state, the flexible display screen 20 is in a flattened state, and the flexible display screen 20 can display in full screen, giving the electronic device 100 a larger display area to improve the user's viewing and operating experience. When the electronic device 100 is in the closed state, the electronic device 100 has a small planar size, making it easy for users to carry and store.

[0070] For example, such as Figure 1 As shown, when the folding assembly 3 is in the open state, the first housing 1 and the second housing 2 are joined together. It should be noted that the joining of the first housing 1 and the second housing 2 may include partial or complete contact between the first housing 1 and the second housing 2, or it may include a small gap between the second housing 2 and the second housing 2. In this embodiment, by joining the first housing 1 and the second housing 2, the relative rotation angle between the first housing 1 and the second housing 2 can be limited to a certain extent, thus stopping the unfolding action of the folding device 10 and preventing the electronic device 100 from over-folding during unfolding. This ensures that the user has the maximum width dimension during use, reduces the stress on the flexible display screen 20, and improves the reliability of the flexible display screen 20 and the electronic device 100.

[0071] For example, such as Figure 3 As shown, when the folding device 10 is in the closed state, the first housing 1 and the second housing 2 can be completely closed. It should be noted that when the first housing 1 and the second housing 2 are closed, it may include the first housing 1 and the second housing 2 partially or completely abutting against each other, or it may include a small gap between the first housing 1 and the second housing 2. In this embodiment, by leaving only a space in the middle to accommodate the flexible display screen 20 between the first housing 1 and the second housing 2, and eliminating large gaps at the edges, the appearance of the housing and the electronic device 100 is improved. Furthermore, it prevents foreign objects from entering the closed electronic device 100, thus improving the reliability of the electronic device 100.

[0072] For example, such as Figure 2 As shown, when the folding device 10 is in the intermediate state, the first housing 1 and the second housing 2 form an angle. The intermediate state can be any state between the open state and the closed state.

[0073] In some embodiments, the electronic device 100 may further include multiple components (not shown in the figures), which are housed inside two housings (1, 2). These components may include, but are not limited to, a processor, an internal processor, an external storage interface, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a communication module, a camera module, an audio module, a speaker, a receiver, a microphone, a headphone jack, a sensor module, and a subscriber identification module (SIM) card interface. The electronic device 100 may have more or fewer components than described above, may combine two or more components, or may have different component configurations. This application does not specifically limit the number, type, or location of the modules in the electronic device 100.

[0074] In some embodiments, the flexible display screen 20 may integrate display functionality and touch sensing functionality. The display function of the flexible display screen 20 is used to display text, images, videos, etc., while the touch sensing function is used to detect user touch actions to achieve human-computer interaction. The flexible display screen 20 may be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MOLED) display, a micro light-emitting diode (MLED) display, or a quantum dot light-emitting diode (QLED) display.

[0075] In this embodiment, as Figure 1As shown, the flexible display screen 20 includes a first non-bending portion 201, a bending portion 202, and a second non-bending portion 203 arranged sequentially. The first non-bending portion 201 is fixedly connected to the first housing 1, and the second non-bending portion 203 is fixedly connected to the second housing 2. During the relative folding or unfolding of the first housing 1 and the second housing 2, the first housing 1 drives the first non-bending portion 201 to move, the second housing 2 drives the second non-bending portion 203 to move, and the bending portion 202 deforms. When the flexible display screen 20 is in a flattened state, the first non-bending portion 201, the bending portion 202, the second non-bending portion 203, and the bending portion 202 are all located on the same plane. When the flexible display screen 20 is in a stacked state, the first non-bending portion 201 and the second non-bending portion 203 abut against each other or have a small gap, and the flexible display screen 20 as a whole is U-shaped.

[0076] It should be understood that in this embodiment, the electronic device 100 is described as having a two-fold structure, that is, the electronic device 100 includes two shells (1, 2) that can be bent relative to each other. In some other embodiments, the electronic device 100 may also have a three-fold or higher structure, that is, the electronic device 100 includes three or more shells that can be bent relative to each other, and two adjacent shells are connected by a folding assembly 3. When the electronic device 100 has a three-fold or higher structure, the structure of the electronic device 100 can be adapted by referring to the description of the two-fold structure in this embodiment, and will not be described again in this application.

[0077] The following example illustrates the implementation structure of folding component 3.

[0078] Please see Figure 4 , Figure 4 yes Figure 1 A partially exploded view of the electronic device shown.

[0079] In some embodiments, the first housing 1 includes a support surface 11 for supporting the flexible display screen 20, and the second housing 2 includes a support surface 21 for supporting the flexible display screen 20. In this application, the included angle between the support surface 11 of the first housing 1 and the support surface 21 of the second housing 2 is the included angle between the first housing 1 and the second housing 2. When the electronic device 100 is in the open state, the included angle between the support surface 11 of the first housing 1 and the support surface 21 of the second housing 2 can be 180°. Exemplarily, the first non-bending portion 201 of the flexible display screen 20 can be fixedly connected to the support surface 11 of the first housing 1. For example, the first non-bending portion 201 can be bonded to the support surface 11 of the first housing 1 using an adhesive layer. The second non-bending portion 203 can be fixedly connected to the support surface 21 of the second housing 2. For example, the second non-bending portion 203 can be bonded to the support surface 21 of the second housing 2 using an adhesive layer. The adhesive layer used for bonding can be a continuous, full-surface adhesive layer, a segmented adhesive layer, or an adhesive layer with hollowed-out areas. The embodiments of this application do not strictly limit the specific design of the adhesive layer.

[0080] Please refer to the following: Figure 5 and Figure 6 , Figure 5 yes Figure 3 The exploded view of the folding component is shown. Figure 6 yes Figure 5 The diagram shows the exploded structure of the folding component after it has been folded left and right.

[0081] In some embodiments, the folding assembly 3 includes a main shaft 31, a plurality of connecting assemblies (32, 33, 34), a first support plate 35, and a second support plate 36.

[0082] For example, multiple connecting components (32, 33, 34) are all connected to the main shaft 31, and all of the connecting components (32, 33, 34) are capable of movement and can be unfolded or folded relative to the main shaft 31. The multiple connecting components (32, 33, 34) are also connected between the first housing 1 and the second housing 2 (see reference). Figure 4 When multiple connecting components (32, 33, 34) move relative to the main shaft 31, they drive the first housing 1 and the second housing 2 to move, so as to realize the relative unfolding or folding of the first housing 1 and the second housing 2.

[0083] The first support plate 35 and the second support plate 36 are both connected to multiple connecting components (32, 33, 34). The first support plate 35 and the second support plate 36 can move with the multiple connecting components (32, 33, 34) to achieve relative unfolding and relative folding. (See also...) Figure 4When the first housing 1 and the second housing 2 are in the open state, the first support plate 35 and the second support plate 36 are located on both sides of the main shaft 31. The first support plate 35 includes a first support surface 3511 facing the flexible display screen 20, and the second support plate 36 includes a second support surface 3611 facing the flexible display screen 20. The first support surface 3511, the second support surface 3611, and the main shaft 31 work together to support the bent portion 202 of the flexible display screen 20 in the open state, making the flexible display screen 20 more flat in the open state, and the bent portion 202 is less likely to dent under user pressure and touch.

[0084] For example, the first support plate 35 has a plurality of protrusions and grooves on the side facing away from the first support surface 3511. The plurality of protrusions and grooves are used to cooperate with a plurality of connecting components (32, 33, 34) to achieve a fixed connection between the first support plate 35 and the plurality of connecting components (32, 33, 34).

[0085] In this embodiment, the two ends near the main shaft 31 are defined as the top and bottom, respectively. For example, there may be three connecting components: a bottom connecting component 32, a middle connecting component 33, and a top connecting component 34. The bottom connecting component 32, the middle connecting component 33, and the top connecting component 34 are arranged at intervals along the extension direction of the main shaft 31. The extension direction of the main shaft 31 refers to the direction from its bottom end to its top end. The coordinated movement of multiple connecting components (32, 33, 34) makes the movement of the first housing 1 and the second housing 2 during relative unfolding or folding more stable and reliable.

[0086] It is understood that the number of connecting components can be fewer or more, and the connecting components can be split or merged. The structures of multiple connecting components can be the same or have slight differences, and this application does not impose strict limitations on this. The following description mainly uses the bottom connecting component 32 as an example, and the middle connecting component 33 and the top connecting component 34 can be designed with reference to the bottom connecting component 32.

[0087] Please refer to the following: Figures 7 to 10 , Figure 7 yes Figure 5 The schematic diagram of the main shaft shown is as follows. Figure 8 yes Figure 7 The diagram shows the structure of the main shaft at another angle. Figure 9 yes Figure 7 The exploded view of the main shaft is shown. Figure 10 yes Figure 8 The diagram shows the exploded structure of the main shaft. Wherein, Figure 8 Relative perspective Figure 7 The perspective is flipped left and right. Figure 10 Relative perspective Figure 9 The perspective is flipped left and right.

[0088] In some embodiments, the main shaft 31 includes a main inner shaft 311 and multiple covers (312, 313, 314). The main inner shaft 311 can be a continuous structural member, and the extension direction of the main shaft 31 corresponds to the extension direction of the main inner shaft 311. The multiple covers (312, 313, 314) are spaced apart along the extension direction of the main shaft 31 and are all fixedly connected to the main inner shaft 311. The multiple covers (312, 313, 314) may include a bottom cover 312, a middle cover 313, and a top cover 314. The bottom cover 312 is located at the bottom of the main inner shaft 311, and forms a receiving space between it and the main inner shaft 311 for installing the bottom connecting assembly 32; the middle cover 313 is located in the middle of the main inner shaft 311, and forms a receiving space between it and the main inner shaft 311 for installing the middle connecting assembly 33; the top cover 314 is located at the top of the main inner shaft 311, and forms a receiving space between it and the main inner shaft 311 for installing the top connecting assembly 34. It is understood that the number and structure of the multiple covers (312, 313, 314) correspond to the multiple connecting assemblies (32, 33, 34).

[0089] For example, the main inner shaft 311 forms a main support surface 3111 on the side facing away from the multiple covers (312, 313, 314). The main support surface 3111 can provide a flat support environment in the open state. It can be understood that the main support surface 3111 of the main inner shaft 311 is also the main support surface 3111 of the main shaft 31. In this embodiment, the main support surface 3111 is a plane, and the planar main support surface 3111 provides a flat support environment for the bent portion of the flexible display screen 20 in the open state. In some other embodiments, the main support surface 3111 may also be a curved surface or a multi-segmented connected plane, and is used to support the bent portion 202 of the flexible display screen 20 in the open state of different electronic devices 100. This application does not strictly limit this.

[0090] The main inner shaft 311 of the main shaft 31 may also be provided with a plurality of first clearance holes 3112, a plurality of second clearance holes 3113 and a plurality of third clearance holes 3114, all of which penetrate the main support surface 3111. The plurality of first clearance holes 3112 and the plurality of second clearance holes 3113 are arranged opposite to each other on both sides of the main inner shaft 311, and the plurality of third clearance holes 3114 are located in the middle of the main inner shaft 311. The first clearance holes 3112, the second clearance holes 3113 and the third clearance holes 3114 are all used to provide clearance for the plurality of connecting components (32, 33, 34) during the movement of the folding assembly 3.

[0091] For example, the bottom cover 312 can generally be a cover structure with a concave center and raised sides. The surface of the bottom cover 312 facing the main inner shaft 311 is provided with multiple mating structures, which are used to mate with the main inner shaft 311 to form a receiving space at the bottom. These mating structures may include grooves, openings, protrusions, notches, etc. In this embodiment, some of the protruding structures of the bottom cover 312 are also provided with fastening holes 3121, through which multiple fasteners 318 can pass through the fastening holes 3121 of the bottom cover 312 and extend into the fastening holes 3121 of the main inner shaft 311, thereby achieving a fixed connection between the bottom cover 312 and the main inner shaft 311. The fasteners 318 can be, but are not limited to, screws, bolts, rivets, etc.

[0092] The middle cover 313 and the top cover 314 can be set with reference to the bottom cover 312. The middle cover 313 and the top cover 314 will not be described in detail in this embodiment.

[0093] Please refer to the following: Figure 9 and Figure 11 , Figure 11 yes Figure 7 The diagram shows the cross-sectional structure of the main shaft after it has been cut along section AA.

[0094] For example, a first receiving space 315 is formed between the main inner shaft 311 and the bottom cover 312, and the two ends of the first receiving space 315 are respectively connected to the spaces on both sides of the main shaft 31. The first receiving space 315 connects to the first clearance hole 3112 and the second clearance hole 3113 of the main inner shaft 311. The first receiving space 315 is used to install a part of the structure of the bottom connecting assembly 32. Please refer to the following: Figure 9 and Figure 12 , Figure 12 yes Figure 7 The diagram shows the cross-sectional structure of the main shaft after it has been cut along section BB.

[0095] For example, a second receiving space 316 is formed between the main inner shaft 311 and the bottom cover 312. The second receiving space 316 includes a first arc-shaped space 3161 and a second arc-shaped space 3162. One end of the first arc-shaped space 3161 can be connected to a third clearance hole 3114, and the other end of the first arc-shaped space 3161 connects to the space on the side of the main shaft 31 where the first clearance hole 3112 is located. The center of the first arc-shaped space 3161 is located on the side of the main inner shaft 311 facing away from the bottom cover 312. One end of the second arc-shaped space 3162 can be connected to another third clearance hole 3114, and the other end of the second arc-shaped space 3162 connects to the space on the side of the main shaft 311 where the second clearance hole 3113 is located. The center of the second arc-shaped space 3162 is located on the side of the main inner shaft 311 facing away from the bottom cover 312. The second receiving space 316 is used to install another part of the structure of the bottom connecting assembly 32.

[0096] Please refer to the following: Figure 13 and Figure 14 , Figure 13 yes Figure 5 The diagram shows the structure of the bottom connecting component. Figure 14 yes Figure 13 The diagram shows a partial exploded view of the bottom connecting component.

[0097] In some embodiments, the bottom connecting assembly 32 includes a first fixing frame 321, a first swing arm 322, a first rotating arm 323, a second fixing frame 324, a second swing arm 325, a second rotating arm 326, a stop block 327, and an adjusting assembly 328. The bottom connecting assembly 32 may also include multiple rotating shafts (350, 360, 370, 380) for inserting into other components of the bottom connecting assembly 32 to achieve connection between components. The bottom connecting assembly 32 may include a control component, which includes the aforementioned first swing arm 322 and second swing arm 325. The control component may be a modular structure to simplify the assembly process of the folding assembly 3. The adjusting assembly 328 may include a limiting member 3281 and an elastic member 3282.

[0098] Please refer to the following: Figure 15 and Figure 16 , Figure 15 yes Figure 14 A partial structural schematic diagram of the control component shown. Figure 16 yes Figure 15 The diagram shows the exploded structure.

[0099] In some embodiments, the control component further includes a locking member 329, a damping assembly 330, and a synchronizing gear 340. The damping assembly 330 includes a first locking block 3301, a second locking block 3302, a fixing plate 3303, a limiting block 3304, an elastic member 3305, a first rotating shaft 3306, a second rotating shaft 3307, and multiple third rotating shafts 3308. The control component forms a modular structure by intersecting other components through the first rotating shaft 3306, the second rotating shaft 3307, and the multiple third rotating shafts 3308.

[0100] Please refer to the following: Figure 17A and Figure 17B , Figure 17A yes Figure 14 The diagram shown is a structural schematic of the first swing arm. Figure 17B yes Figure 17A The diagram shows the structure of the first swing arm at another angle.

[0101] For example, the first swing arm 322 may include a first end 3221 and a second end 3222. The first end 3221 of the first swing arm 322 is provided with a pivot hole 3221a, which passes through both ends of the first end 3221 of the first swing arm 322.

[0102] The first end 3221 of the first swing arm 322 is further provided with a first clearance space 3221b. The first clearance space 3221b is located in the middle of the first end 3221 of the first swing arm 322. The first clearance space 3221b can connect to the pivot hole 3221a, so that the middle of the first end 3221 is approximately C-shaped. The first swing arm 322 also includes a first stop end face 3221c, which is formed on the wall of the first clearance space 3221b.

[0103] For example, the first end 3221 of the first swing arm 322 is further provided with a first compensation block 3221d. The first compensation block 3221d can be disposed close to the first clearance space 3221b, for example, the first compensation block 3221d can form part of the wall surface of the first clearance space 3221b. The first compensation block 3221d can be spaced apart from the first stop end face 3221c, for example, the first compensation block 3221d and the first stop end face 3221c can be formed at opposite ends of the aforementioned C-shaped structure.

[0104] The first end 3221 of the first swing arm 322 is further provided with a structure that engages with the damping assembly 330. For example, the first end 3221 of the first swing arm 322 may include a plurality of first protrusions 3221e, a plurality of second protrusions 3221f, and a plurality of meshing teeth 2111g. The plurality of first protrusions 3221e and the plurality of second protrusions 3221f are located opposite to each other at both ends of the first end 3221 of the first swing arm 322. The plurality of first protrusions 3221e are arranged in a ring and spaced apart from each other. The plurality of first protrusions 3221e are arranged around the pivot hole 3221a of the first end 3221 of the first swing arm 322. The plurality of second protrusions 3221f are arranged in a ring and spaced apart from each other. The plurality of second protrusions 3221f are arranged around the pivot hole 3221a of the first end 3221 of the first swing arm 322. Multiple meshing teeth 2111g are located on the side of the first end 3221 of the first swing arm 322, for example, between the second protrusion 3221f and the first clearance space 3221b.

[0105] In some embodiments, the first end 3221 of the first swing arm 322 is further provided with a first limiting groove 3221h, which communicates with the pivot hole 3221a. In this embodiment, the first limiting groove 3221h may be located between the first clearance space 3221b and the plurality of meshing teeth 2111g. In other embodiments, the first limiting groove 3221h may also be located between the first clearance space 3221b and the plurality of first protrusions 3221e; or at other positions.

[0106] For example, the second end 3222 of the first swing arm 322 includes a sliding block 3222a, which may protrude from both ends of the second end 3222 of the first swing arm 322. For example, the second end 3222 of the first swing arm 322 may also be provided with a through hole 3222b, which can reduce the weight of the first swing arm 322, thus facilitating the lightweighting of the folding device 10. The second end 3222 of the first swing arm 322 also provides a protrusion 3222c, which is located at the edge of the through hole 3222b and forms part of the wall surface of the through hole 3222b.

[0107] The first swing arm 322 further includes a connecting portion 3223 that connects the first end 3221 and the second end 3222. For example, the connecting portion 3223 of the first swing arm 322 can be bent relative to the first end 3221 of the first swing arm 322, so that the structural design of the first swing arm 322 is more flexible and can better meet the connection and shape requirements of the bottom connecting component 32 and the folding component 3.

[0108] The first swing arm 322 can be a one-piece molded structural component to achieve high structural strength. For example, the first swing arm 322 can be formed using metal injection molding or other processes; this application does not impose strict limitations on this.

[0109] Please refer to the following: Figure 18A and Figure 18B , Figure 18A yes Figure 14 The diagram shows the structure of the second swing arm. Figure 18B yes Figure 18A The diagram shows the structure of the second swing arm at another angle.

[0110] For example, the second swing arm 325 may include a first end 3251 and a second end 3252. The first end 3251 of the second swing arm 325 is provided with a pivot hole 3251a, which passes through both ends of the first end 3251 of the second swing arm 325.

[0111] The second swing arm 325 also includes a second clearance space 3251b at its first end 3251. The second clearance space 3251b is located at the middle of the first end 3251 of the second swing arm 325. The second clearance space 3251b can connect to the pivot hole 3251a, making the middle of the first end 3251 approximately C-shaped. The second swing arm 325 also includes a second stop end face 3251c, which is formed on the wall of the second clearance space 3251b.

[0112] For example, the first end 3251 of the second swing arm 325 is further provided with a second compensation block 3251d. The second compensation block 3251d can be disposed close to the second clearance space 3251b, for example, the second compensation block 3251d can form part of the wall surface of the second clearance space 3251b. The second compensation block 3251d can be spaced apart from the second stop end face 3251c, for example, the second compensation block 3251d and the second stop end face 3251c can be formed at opposite ends of the aforementioned C-shaped structure.

[0113] The first end 3251 of the second swing arm 325 is further provided with a structure that engages with the damping assembly 330. For example, the first end 3251 of the second swing arm 325 may include a plurality of first protrusions 3251e, a plurality of second protrusions 3251f, and a plurality of meshing teeth 3251g. The plurality of first protrusions 3251e and the plurality of second protrusions 3251f are located opposite to each other at both ends of the first end 3251 of the second swing arm 325. The plurality of first protrusions 3251e are arranged in a ring and spaced apart from each other. The plurality of first protrusions 3251e are arranged around the pivot hole 3251a of the first end 3251 of the second swing arm 325. The plurality of second protrusions 3251f are arranged in a ring and spaced apart from each other. The plurality of second protrusions 3251f are arranged around the pivot hole 3251a of the first end 3251 of the second swing arm 325. Multiple meshing teeth 3251g are located on the side of the first end 3251 of the second swing arm 325, for example, between the second protrusion 3251f and the second clearance space 3251b.

[0114] In some embodiments, the first end 3251 of the second swing arm 325 is further provided with a second limiting groove 3251h, which communicates with the pivot hole 3251a. In this embodiment, the second limiting groove 3251h may be located between the second clearance space 3251b and the plurality of meshing teeth 3251g. In other embodiments, the second limiting groove 3251h may also be located between the second clearance space 3251b and the plurality of first protrusions 3251e; or at other positions.

[0115] For example, the second end 3252 of the second swing arm 325 includes a sliding block 3252a, which may protrude from both ends of the second end 3252 of the second swing arm 325. For example, the second end 3252 of the second swing arm 325 may also be provided with a through hole 3252b, which can reduce the weight of the second swing arm 325 and help to achieve a lightweight folding device 10. The second end 3252 of the second swing arm 325 may also be provided with a protrusion 3252c, which is located at the edge of the through hole 3252b and forms part of the wall surface of the through hole 3252b.

[0116] The second swing arm 325 also includes a connecting portion 3253 that connects the first end 3251 and the second end 3252. For example, the connecting portion 3253 of the second swing arm 325 can be bent relative to the first end 3251 of the second swing arm 325, so that the structural design of the second swing arm 325 is more flexible and can better meet the connection and shape requirements of the bottom connecting component 32 and the folding component 3.

[0117] The second swing arm 325 can be a one-piece molded structural component to achieve high structural strength. For example, the second swing arm 325 can be formed using metal injection molding or other processes; this application does not impose strict limitations on this.

[0118] Please refer to the following: Figure 19 and Figure 20 , Figure 19 yes Figure 16 A partial structural schematic diagram of the control component shown. Figure 20 yes Figure 19 The diagram shows the structure from another angle. For example, multiple synchronizing gears 340 mesh with each other, and each synchronizing gear 340 is provided with a shaft hole 3401. Each synchronizing gear 340 includes multiple meshing teeth 3402 and multiple third protrusions 3403. The multiple meshing teeth 3402 may be located at one end of the synchronizing gear 340 and are arranged around the shaft hole 3401, with the multiple meshing teeth 3402 of two adjacent synchronizing gears 340 engaging with each other. The multiple third protrusions 3403 are located at the other end of the synchronizing gear 340, and the multiple third protrusions 3403 are arranged around the shaft hole 3401 and spaced apart from each other. In this embodiment, the example of "two synchronizing gears 340" is used for illustration.

[0119] For example, the first positioning block 3301 includes a first positioning plate 3301a, two first protrusion groups 3301b, and a first support plate 3301c. The first positioning plate 3301a includes two first through holes 3301d, which are spaced apart. The two first protrusion groups 3301b are fixed to one side of the first positioning plate 3301a, and the two first protrusion groups 3301b are respectively positioned corresponding to the two first through holes 3301d. Each first protrusion group 3301b may include multiple first protrusions 3301f, which are arranged in a ring and spaced apart from each other. The multiple first protrusions 3301f surround the corresponding first through hole 3301d, and a first positioning groove 3301e is formed between two adjacent first protrusions 3301f. The first support plate 3301c is fixed to the side of the first positioning plate 3301a facing away from the two first protrusion groups 3301b. The first support plate 3301c can increase the structural strength of the first positioning plate 3301a. The first positioning block 3301 can be a one-piece molded structural component to have high structural strength.

[0120] For example, the second positioning block 3302 includes a second positioning plate 3302a and a plurality of second protrusion groups 3302b, which are fixed to the same side surface of the second positioning plate 3302a. The second positioning plate 3302a includes a plurality of second through holes 3302c, which are spaced apart and correspond one-to-one with the plurality of second protrusion groups 3302b. The number of second through holes 3302c and second protrusion groups 3302b can be four. Each second protrusion group 3302b can include a plurality of second protrusions 3302e, which are arranged in a ring and spaced apart from each other. The plurality of second protrusions 3302e surround the corresponding second through hole 3302c, and a second positioning groove 3302d is formed between two adjacent second protrusions 3302e. The second positioning block 3302 can be an integrally formed structural component to have high structural strength.

[0121] For example, the fixing plate 3303 includes a plurality of slots 3303a disposed between each other, the slots 3303a forming an opening on one side of the fixing plate 3303, so that other components can be inserted into the slots 3303a through the opening. The fixing plate 3303 may be generally flat.

[0122] For example, the limiting block 3304 is provided with a plurality of third through holes 3304a, which are spaced apart from each other. The limiting block 3304 may also be provided with a protrusion 3304b, which protrudes from one side of the limiting block 3304.

[0123] Please refer to it again. Figure 16 For example, the elastic member 3305 includes a plurality of springs 3305a. This embodiment uses four springs 3305a as an example for illustration. In other embodiments, the elastic member 3305 may also be made of elastic materials such as elastic rubber; this application does not impose strict limitations on this.

[0124] For example, one end of the first rotating shaft 3306 is provided with a limiting flange 3306a, the outer diameter of which is larger than the outer diameter of the main body of the first rotating shaft 3306. The other end of the first rotating shaft 3306 is provided with a limiting groove 3306b, which is recessed relative to the outer surface of the main body of the first rotating shaft 3306, and the diameter of the bottom wall of the limiting groove 3306b is smaller than the outer diameter of the main body of the first rotating shaft 3306.

[0125] One end of the second rotating shaft 3307 is provided with a limiting flange 3307a, the outer diameter of which is larger than the outer diameter of the main body of the second rotating shaft 3307. The other end of the second rotating shaft 3307 is provided with a limiting groove 3307b, which is recessed relative to the outer surface of the main body of the second rotating shaft 3307, and the diameter of the bottom wall of the limiting groove 3307b is smaller than the outer diameter of the main body of the second rotating shaft 3307.

[0126] The third rotating shaft 3308 is provided with a limiting flange 3308a, which is located near the end of the third rotating shaft 3308. The outer diameter of the limiting flange 3308a is larger than the outer diameter of the main body of the third rotating shaft 3308. Please see Figure 21 , Figure 21 yes Figure 15 The diagram shows the structure of the locking component.

[0127] In some embodiments, the locking member 329 may include a fixing part 3291, a first locking part 3292, a second locking part 3293, and a third locking part 3294. The fixing part 3291 may have a through hole 3291a. The fixing part 3291 may be generally plate-shaped. The first locking part 3292 and the second locking part 3293 are respectively fixed to both sides of the fixing part 3291. The first locking part 3292 has a first through hole 3292a, and the second locking part 3293 has a second through hole 3293a. The third locking part 3294 is fixed between the first locking part 3292 and the second locking part 3293. The third locking part 3294 may also be fixed to the fixing part 3291, and the third locking part 3294 is used to increase the structural strength of the locking member 329. The third locking part 3294 has a plurality of third through holes 3294a. The overall structure of the first locking part 3292, the third locking part 3294 and the second locking part 3293 can be generally plate-shaped, and the overall structure is bent relative to the fixed part 3291.

[0128] It should be noted that in this embodiment, the locking member 329 is a one-piece molded structure, which has high structural strength and good stability. For example, the locking member 329 can be formed by metal injection molding or by other processes. In some other embodiments, the first locking part 3292, the second locking part 3293, the third locking part 3294, and the fixing part 3291 can also be formed separately and then fixedly connected; this application does not strictly limit this.

[0129] Understandably, in this embodiment, the first locking portion 3292 and the second locking portion 3293 of the locking member 329 are fixed to the fixing portion 3291 through the third locking portion 3294. In some other embodiments, the locking member 329 may also be fixed directly to the fixing portion 3291 without the third locking portion 3294.

[0130] Please refer to the reference again. Figures 15 to 21 For example, the first locking block 3301 and the second locking block 3302 are spaced apart, and the plurality of first protrusion groups 3301b of the first locking block 3301 face the plurality of second protrusion groups 3302b of the second locking block 3302. The first swing arm 322, the second swing arm 325, and the plurality of synchronous gears 340 are all located between the first locking block 3301 and the second locking block 3302. Specifically, the plurality of first protrusions 3221e of the first swing arm 322 face the first locking block 3301, the plurality of second protrusions 3221f of the first swing arm 322 face the second locking block 3302, the plurality of first protrusions 3251e of the second swing arm 325 face the first locking block 3301, the plurality of second protrusions 3251f of the second swing arm 325 face the second locking block 3302, and the plurality of third protrusions 3403 of the plurality of synchronous gears 340 face the second locking block 3302. The first end 3221 of the first swing arm 322 indirectly meshes with the first end 3251 of the second swing arm 325 through a plurality of synchronous gears 340. The two synchronous gears 340 mesh with each other through their respective meshing teeth 3402, and the two synchronous gears 340 respectively mesh with the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325.

[0131] For example, the locking member 329 is located between the first swing arm 322 and the second swing arm 325, and the locking member 329 is located between the first locking block 3301 and the plurality of synchronous gears 340. The fixing portion 3291 of the locking member 329 is located between the first locking block 3301 and the third locking portion 3294 of the locking member 329. The first locking portion 3292 of the locking member 329 engages with the first end 3221 of the first swing arm 322, and the second locking portion 3293 engages with the first end 3251 of the second swing arm 325.

[0132] For example, the fixing plate 3303 is located on the side of the second locking block 3302 facing away from the first locking block 3301, and the limiting block 3304 is located between the second locking block 3302 and the fixing plate 3303. The elastic member 3305 is located between the limiting block 3304 and the second locking block 3302.

[0133] The first rotating shaft 3306, the second rotating shaft 3307, and the two third rotating shafts 3308 are inserted into the aforementioned components to form a modular structure for the control components. Specifically: Please refer to the following: Figure 19 , Figure 20 as well as Figure 22A , Figure 22A yes Figure 15 The diagram shows a cross-sectional view of the control component after it has been cut along section CC. In some embodiments, the first locking portion 3292 of the locking member 329 engages with the first limiting groove 3221h of the first end 3221 of the first swing arm 322 to achieve a locking relationship between the locking member 329 and the first swing arm 322. The first rotating shaft 3306 is connected to the first locking block 3301, the first end 3221 of the first swing arm 322, the first locking portion 3292 of the locking member 329, the second locking block 3302, one of the springs 3305a, the limiting block 3304, and the fixing plate 3303. The first rotating shaft 3306 passes through one of the first through holes 3301d of the first locking block 3301, the rotating shaft hole 3221a of the first end 3221 of the first swing arm 322, the first through hole 3292a of the first locking part 3292 of the locking member 329, one of the second through holes 3302c of the second locking block 3302, the inner space of one of the springs 3305a, one of the third through holes 3304a of the limiting block 3304, and one of the slots 3303a of the fixing plate 3303. Multiple first protrusions 3221e of the first end 3221 of the first swing arm 322 are corresponding to one of the first protrusion groups 3301b of the first locking block 3301, and multiple second protrusions 3221f of the first end 3221 of the first swing arm 322 are corresponding to one of the second protrusion groups 3302b of the second locking block 3302.

[0134] In this configuration, the spring 3305a is in a compressed state, the limiting flange 3306a of the first rotating shaft 3306 is located on the side of the first locking block 3301 facing away from the second locking block 3302 and abuts against the first locking block 3301, and the fixing plate 3303 is partially inserted into the limiting groove 3306b of the first rotating shaft 3306, with the fixing plate 3303 abutting against the side wall of the limiting groove 3306b of the first rotating shaft 3306. In this configuration, one end of the spring 3305a abuts against the limiting block 3304, the limiting block 3304 abuts against the fixing plate 3303, the fixing plate 3303 abuts against the side wall of the limiting slot 3306b of the first rotating shaft 3306, and the limiting flange 3306a of the first rotating shaft 3306 abuts against the first locking block 3301. Simultaneously, the other end of the spring 3305a abuts against the second locking block 3302, causing the first locking block 3301 and the second locking block 3302 to tend to move closer together. At this time, one of the first protrusion groups 3301b of the first locking block 3301 abuts against multiple first protrusions 3221e of the first swing arm 322, and one of the second protrusion groups 3302b of the second locking block 3302 abuts against multiple second protrusions 3221f of the first swing arm 322.

[0135] In some states, the multiple first protrusions 3221e of the first swing arm 322 and the multiple first protrusions 3301f of a first protrusion group 3301b of the first locking block 3301 are arranged alternately to form a locking structure, and the multiple first protrusions 3221e are correspondingly locked into the multiple first locking grooves 3301e of the first protrusion group 3301b; the multiple second protrusions 3221f of the first swing arm 322 and the multiple second protrusions 3302e of a second protrusion group 3302b of the second locking block 3302 are arranged alternately to form a locking structure, and the multiple second protrusions 3221f are correspondingly locked into the multiple second locking grooves 3302d of the second protrusion group 3302b.

[0136] Please refer to the following: Figure 19 , Figure 20 as well as Figure 22B , Figure 22B yes Figure 15 The diagram shows the cross-sectional structure of the control component after it has been cut along section DD.

[0137] In some embodiments, the second locking portion 3293 of the locking member 329 engages with the second limiting groove 3251h of the first end portion 3251 of the second swing arm 325 to achieve a locking relationship between the locking member 329 and the second swing arm 325. The second rotating shaft 3307 is inserted into the first locking block 3301, the first end portion 3251 of the second swing arm 325, the second locking portion 3293 of the locking member 329, the second locking block 3302, another spring 3305a, the limiting block 3304, and the fixing plate 3303. Specifically, the second rotating shaft 3307 passes through another first through hole 3301d of the first locking block 3301, the rotating shaft hole 3251a of the first end 3251 of the second swing arm 325, the second through hole 3293a of the second locking part 3293 of the locking member 329, another second through hole 3302c of the second locking block 3302, the inner space of another spring 3305a, another third through hole 3304a of the limiting block 3304, and another slot 3303a of the fixing plate 3303. Multiple first protrusions 3251e of the first end 3251 of the second swing arm 325 are corresponding to another first protrusion group 3301b of the first locking block 3301, and multiple second protrusions 3251f of the first end 3251 of the second swing arm 325 are corresponding to another second protrusion group 3302b of the second locking block 3302.

[0138] In this configuration, the spring 3305a is in a compressed state, the limiting flange 3307a of the second rotating shaft 3307 is located on the side of the first locking block 3301 facing away from the second locking block 3302 and abuts against the first locking block 3301, and the fixing plate 3303 is partially inserted into the limiting groove 3307b of the second rotating shaft 3307, with the fixing plate 3303 abutting against the side wall of the limiting groove 3307b of the second rotating shaft 3307. Specifically, since one end of the spring 3305a abuts against the limiting block 3304, the limiting block 3304 abuts against the fixing plate 3303, the fixing plate 3303 abuts against the side wall of the limiting groove 3307b of the second rotating shaft 3307, and the limiting flange 3307a of the second rotating shaft 3307 abuts against the first locking block 3301, while the other end of the spring 3305a abuts against the second locking block 3302, the first locking block 3301 and the second locking block 3302 tend to move closer to each other. At this time, another first protrusion group 3301b of the first locking block 3301 abuts against multiple first protrusions 3251e of the second swing arm 325, and another second protrusion group 3302b of the second locking block 3302 abuts against multiple second protrusions 3251f of the second swing arm 325.

[0139] In some states, the multiple first protrusions 3251e of the second swing arm 325 and the multiple first protrusions 3301f of another first protrusion group 3301b of the first locking block 3301 are arranged alternately to form a locking structure, and the multiple first protrusions 3251e are correspondingly locked into the multiple first locking grooves 3301e of the other first protrusion group 3301b; the multiple second protrusions 3251f of the second swing arm 325 and the multiple second protrusions 3302e of another second protrusion group 3302b of the second locking block 3302 are arranged alternately to form a locking structure, and the multiple second protrusions 3251f are correspondingly locked into the multiple second locking grooves 3302d of the other second protrusion group 3302b.

[0140] In this embodiment, the elastic component 3305 is used to generate elastic force so that the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 both abut against the first locking block 3301 and the second locking block 3301. The plurality of first protrusions 3221e of the first swing arm 322 cooperate with one of the first protrusion groups 3301b to form a locking structure. The plurality of second protrusions 3221f of the first swing arm 322 cooperate with one of the second protrusion groups 3302b to form a locking structure. The plurality of first protrusions 3251e of the second swing arm 325 cooperate with another first protrusion group 3301b to form a locking structure. The plurality of second protrusions 3251f of the second swing arm 325 cooperate with another second protrusion group 3302b to form a locking structure.

[0141] In this embodiment, the two first protrusion groups 3301b at the ends of the first locking block 3301 and the second protrusion group 3302b at the ends of the second locking block 3302 are correspondingly arranged. Specifically, in the correspondingly arranged first protrusion groups 3301b and second protrusion groups 3302b, the positions of the first protrusion 3301f and the second protrusion 3302e can be directly opposite each other, and the positions of the first locking groove 3301e and the second locking groove 3302d can be directly opposite each other. In other embodiments, the positions of the first protrusion 3301f and the second protrusion 3302e can be staggered or have other positional relationships, and the positions of the first locking groove 3301e and the second locking groove 3302d can also be staggered or have other positional relationships; this application does not strictly limit these relationships.

[0142] See also Figure 19 , Figure 20 as well as Figure 23 , Figure 23 yes Figure 15 The diagram shows the cross-sectional structure of the control component after it has been cut along section EE.

[0143] For example, the third rotating shaft 3308 is inserted into the locking member 329, one of the synchronous gears 340, the second locking block 3302, another spring 3305a, the limiting block 3304, and the fixing plate 3303. The third rotating shaft 3308 passes sequentially through the third through hole 3294a of the third locking part 3294 of the locking member 329, the rotating shaft hole 3401 of one of the synchronous gears 340, another second through hole 3302c of the second locking block 3302, the inner space of the other spring 3305a, another third through hole 3304a of the limiting block 3304, and another slot 3303a of the fixing plate 3303.

[0144] In some embodiments, the third locking portion 3294 of the locking member 329 may also be provided with a recess 3294b, the recess 3294b communicating with the third through hole 3294a of the third locking portion 3294, and the opening of the recess 3294b being formed on the end face of the third locking portion 3294 facing away from the fixing portion 3291. The limiting flange 3308a of the third rotating shaft 3308 may be partially or entirely located in the recess 3294b of the third locking portion 3294.

[0145] In this configuration, the spring 3305a can be in a compressed state. One side of the limiting flange 3308a of the third rotating shaft 3308 can abut against the bottom wall of the groove 3294b of the third locking part 3294, and the other side of the limiting flange 3308a of the third rotating shaft 3308 can abut against one of the synchronous gears 340. Because the second locking block 3302 tends to move closer to the first locking block 3301, one of the second protrusion groups 3302b of the second locking block 3302 abuts against multiple third protrusions 3403 of the synchronous gear 340, forming a locking structure.

[0146] For example, the protrusion 3304b of the limiting block 3304 covers the slot 3304a in the fixing plate 3303 for mounting the third rotating shaft 3308, thereby preventing the end of the third rotating shaft 3308 from warping up and increasing the stability of the damping assembly 330. In some other embodiments, the protrusion 3304b of the limiting block 3304 may also cover other slots 3303a in the fixing plate 3303 for mounting the first rotating shaft 3306 and / or the second rotating shaft 3307, which is not strictly limited in this application.

[0147] In this embodiment, the number of third rotating shafts 3308 is the same as the number of synchronous gears 340, and the second locking block 3302 is provided with a corresponding second through hole 3302c for inserting the third rotating shaft 3308, the limiting block 3304 is provided with a corresponding third through hole 3304a for inserting the third rotating shaft 3308, and the fixing plate 3303 is provided with a corresponding through hole 3303a for inserting the third rotating shaft 3308. It is understood that in some other embodiments, the third rotating shaft 3308 may not be provided, and multiple synchronous gears 340 may be rotatably connected to the locking member 329 by means of pins or other structures. This application does not strictly limit this.

[0148] See also Figure 22A , Figure 22B ,as well as Figure 23 Under the action of the elastic force of the elastic component 3305 and the structural cooperation of each component, the entire control component forms a relatively modular whole, and the first swing arm 322 and the second swing arm 325 can rotate relative to each other.

[0149] For example, when the first swing arm 322 and the second swing arm 325 rotate relative to each other, for the engaging structure between the plurality of first protrusions 3221e of the first end 3221 of the first swing arm 322 and the corresponding first protrusion group 3301b, the first protrusion 3221e will disengage from one of the first locking grooves 3301e, cross over one first protrusion 3301f, and engage in the adjacent first locking groove 3301e. For the engaging structure between the plurality of second protrusions 3221f of the first end 3221 of the first swing arm 322 and the corresponding second protrusion group 3302b, the second protrusion 3221f will disengage from one of the second locking grooves 3302d, cross over one second protrusion 3302e, and engage in the adjacent second locking groove 3302d. During this process, the first end 3221 of the first swing arm 322 will push the second locking block 3302 to move closer to the fixed part, and at the same time push the first locking block 3301 to move further away from the locking part 329. The elastic component 3305 is compressed, generating a portion of the damping force and pushing force. Similarly, when the first swing arm 322 and the second swing arm 325 rotate relative to each other, for the locking structure between the plurality of first protrusions 3251e of the first end 3251 of the second swing arm 325 and the corresponding first protrusion group 3301b, the first protrusion 3251e will disengage from one of the first locking grooves 3301e, cross over one first protrusion 3301f, and lock into the adjacent first locking groove 3301e. For the locking structure between the plurality of second protrusions 3251f of the first end 3251 of the second swing arm 325 and the corresponding second protrusion group 3302b, the second protrusion 3251f will disengage from one of the second locking grooves 3302d, cross over one second protrusion 3302e, and lock into the adjacent second locking groove 3302d. During this process, the first end 3251 of the second swing arm 325 will push the second locking block 3302 to move towards the locking member 329, and the elastic member 3305 will be compressed, generating another part of the damping force and pushing force.

[0150] In this process, because the synchronizing gear 340 meshes with the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325, the synchronizing gear 340 rotates when the first swing arm 322 and the second swing arm 325 rotate relative to each other. Regarding the engagement structure between the multiple third protrusions 3403 of the synchronizing gear 340 and the corresponding second protrusion group 3302b, the third protrusion 3403 in the synchronizing gear 340 will disengage from one of the second locking grooves 3302d, cross one of the second protrusions 3302e, and engage in another adjacent second locking groove 3302d. During this process, the synchronizing gear 340 will push the second locking block 3302 towards the locking member 329, compressing the elastic member 3305 and generating another portion of damping force and pushing force.

[0151] In other words, before the first protrusion (3221e, 3251e) crosses the first protrusion 3301f, the second protrusion (3221f, 3251f) crosses the second protrusion 3302e, and the third protrusion 3403 crosses the second protrusion 3302e, the damping force generated by this process requires a certain driving force to be applied to the first swing arm 322 and the second swing arm 325 to rotate relative to each other; and after the first protrusion (3221e, 3251e) crosses the first protrusion 3301f, the second protrusion (3221f, 3251f) crosses the second protrusion 3302e, and the third protrusion 3403 crosses the second protrusion 3302e, the driving force generated by this process can drive the first swing arm 322 to continue rotating relative to the second swing arm 325.

[0152] Furthermore, since the elastic component 3305 is in a compressed state, the end face of the first locking part 3292 near the second locking block 3302 abuts against the wall face of the first limiting groove 3221h of the first swing arm 322 near the second locking block 3302, forming a friction surface; the end face of the second locking part 3293 near the second locking block 3302 abuts against the wall face of the second limiting groove 3251h of the second swing arm 325 near the second locking block 3302, forming a friction surface; the end face of the synchronous gear 340 facing away from the second locking block 3302 abuts against the end face of the third locking part 3294 near the second locking block 3302, forming a friction surface. When the first swing arm 322 and the second swing arm 325 rotate relative to each other, friction torque and damping force are generated on the above-mentioned friction surfaces. Alternatively, the end face of the first locking part 3292 near the first locking block 3301 abuts against the wall face of the first limiting groove 3221h of the first swing arm 322 near the first locking block 3301, forming a friction surface; the end face of the second locking part 3293 near the first locking block 3301 abuts against the wall face of the second limiting groove 3251h of the second swing arm 325 near the first locking block 3301, forming a friction surface; the end face of the synchronous gear 340 facing away from the second locking block 3302 abuts against the end face of the third locking part 3294 near the second locking block 3302, forming a friction surface. When the first swing arm 322 and the second swing arm 325 rotate relative to each other, frictional torque and damping force are generated on the above-mentioned friction surfaces. That is, during the relative rotation of the first swing arm 322 and the second swing arm 325, the control component forms multiple friction surfaces, and the multiple friction surfaces generate frictional torque and damping force.

[0153] In this embodiment, under the action of the synchronizing gear 340, the rotation of the first swing arm 322 and the rotation of the second swing arm 325 are synchronized. The rotation angle of the first swing arm 322 can be the same as the rotation angle of the second swing arm 325, so that the entire control component has good synchronization.

[0154] It is understood that in some other embodiments, the synchronizing gear 340 may not have the third protrusion 3403, and may only provide damping force and driving force when the first swing arm 322 and the second swing arm 325 rotate relative to each other through the cooperation of the first swing arm 322 and the second swing arm 325 with the damping component 330. Of course, in yet another embodiment, the control component may not have the synchronizing gear 340.

[0155] It should be noted that in some other embodiments, the engagement structure between the damping component 330 and the swing arm can also be different. For example, by changing the shape of the first protrusion 3301f, the damping component 330 can generate a damping force on the first swing arm 322 only, without generating a pushing force, when the first protrusion 3221e of the first swing arm 322 passes over the first protrusion 3301f of the first locking block 3301. That is, the damping component 330 can be used only to provide resistance when the first swing arm 322 and the second swing arm 325 rotate relative to each other. This application does not strictly limit the engagement structure between the damping component 330 and the swing arm.

[0156] Please refer to the following: Figure 24A and Figure 24B , Figure 24A yes Figure 14 The diagram shows the structure of the stop block. Figure 24B yes Figure 24A The diagram shows the structure of the stop block after it has been flipped left and right.

[0157] In some embodiments, the stop block 327 includes a main body 3271, a first stop portion 3272, and a second stop portion 3273. The first stop portion 3272 is fixed to one side of the main body 3271, and the second stop portion 3273 is fixed to the other side of the main body 3271. The stop block 327 can be an integrally formed structural component. For example, the main body 3271 may have a through hole 3271a and a limiting groove 3271b, with the limiting groove 3271b communicating with the through hole 3271a. The stop block 327 can be assembled and fixed with other structures through the through hole 3271a and the limiting groove 3271b on the main body 3271.

[0158] For example, the stop block 327 may include a first stop surface 3272a and a second stop surface 3273a. The first stop surface 3272a and the second stop surface 3273a are disposed opposite to each other. The first stop surface 3272a may be formed on the end face of the first stop portion 3272 that is opposite to the main body portion 3271, and the second stop surface 3273a may be formed on the end face of the second stop portion 3273 that is opposite to the main body portion 3271.

[0159] For example, the stop block 327 also includes a first clearance groove 3272b and a second clearance groove 3273b. Both the first clearance groove 3272b and the second clearance groove 3273b are located between the first stop surface 3272a and the second stop surface 3273a. Specifically, the first clearance groove 3272b is positioned closer to the first stop surface 3272a, and the second clearance groove 3273b is positioned closer to the second stop surface 3273a. For instance, the first clearance groove 3272b is located between the first stop portion 3272 and the main body portion 3271, and the second clearance groove 3273b is located between the main body portion 3271 and the second stop portion 3273.

[0160] Please see Figure 25 , Figure 25 yes Figure 14 The diagram shows the structure of the adjustment component.

[0161] In some embodiments, the limiting member 3281 of the adjusting component 328 may include a limiting end 2381a and a connecting end 3281b, with the connecting end 3281b fixed to one end face of the limiting end 2381a. The limiting member 3281 may be an integrally formed structural component. The elastic member 3282 may be an elastic gasket 3282, and the elastic member 3282 may have a through hole 3282a. In other embodiments, the elastic member 3282 may also be a leaf spring or other elastic structural component; this application does not strictly limit this.

[0162] Please refer to the following: Figure 26 , Figure 27A as well as Figure 27B , Figure 26 yes Figure 13 The bottom connecting component shown has a partial structure and Figure 9 The diagram shows the assembly structure of the main inner shaft. Figure 27A yes Figure 26 The diagram shows the cross-sectional structure after the structure is cut along the section at FF. Figure 27B yes Figure 27A A partial schematic diagram of the structure shown from another angle.

[0163] In some embodiments, such as Figure 26 As shown, the control component is installed on the side of the main inner shaft 311 facing away from the main support surface 3111, for example, it can be installed in the first receiving space 315 of the main shaft 31 (e.g. Figure 11 (As shown). Among them, the stop block 327 can be installed on the control component, the locking member 329 can be located between the first swing arm 322 and the second swing arm 325, and the stop block 327 can also be located between the third locking part 3294 of the locking member 329 and the first locking block 3301.

[0164] In some other embodiments, the damping assembly 330 may not include the limiting block 3304 and the fixing plate 3303. For example, one end of the elastic member 3305 facing away from the second locking block 3302 can directly abut against the wall of the main inner shaft 311 in the first receiving space 315, and the other end abuts against the second locking block 3302. When the elastic member 3305 is in a compressed state, the plurality of second protrusions of the first swing arm 322 form a locking structure with one of the protrusion groups of the second locking block (e.g., Figure 22A As shown in the diagram), the multiple second protrusions of the second swing arm 325 form a snap-fit ​​structure with another set of protrusions of the second locking block (as shown in the diagram). Figure 22B As shown), the multiple third protrusions of the synchronizing gear and another set of protrusions of the second locking block form a locking structure (as shown). Figure 23 (As shown). The damping component 330 can still provide damping force and driving force for the rotation of the first swing arm 322 and the second swing arm 325. The embodiments of this application do not strictly limit the specific structure and implementation of the damping component 330.

[0165] See also Figure 27A and Figure 27B For example, the fixing portion 3291 of the locking member 329 is stacked between the main inner shaft 311 of the spindle 31 and the stop block 327, and the elastic member 3282 is located between the fixing portion 3291 of the locking member 329 and the stop block 327. The main inner shaft 311 may also be provided with a protrusion 3115, which protrudes away from the main support surface 3111. The protrusion 3115 is embedded in the through hole 3291a of the fixing portion 3291 of the locking member 329, the through hole 3282a of the elastic member 3282, and the limiting groove 3271b of the main body portion 3271 of the stop block 327. The protrusion 3115 can limit the stop block 327 and the locking member 329 in the extending direction of the spindle 31. In some embodiments, the protrusion 3115 is also provided with a threaded hole. For example, the connecting end 3281b of the limiting member 3281 may be provided with external threads, such as the limiting member 3281 being a screw. The limiting end 2381a of the limiting member 3281 is located on the side of the stop block 327 facing away from the main inner shaft 311, and the connecting end 3281b of the limiting member 3281 passes through the through hole 3271a and the limiting groove 3271b of the main body 3271 of the stop block 327 and is threadedly connected to the main inner shaft 311 through the threaded hole.

[0166] In this configuration, the elastic element 3282 is in a compressed state, with its two end faces abutting against the main body 3271 of the stop block 327 and the fixing part 3291 of the locking element 329, respectively. Under the elastic force of the elastic element 3282, the main body 3271 of the stop block 327 abuts against the limiting end 2381a of the limiting element 3281, and the fixing part 3291 of the locking element 329 abuts against the main inner shaft 311. That is, one end of the elastic element 3282 abuts against the stop block 327, and the other end indirectly abuts against the main inner shaft 311 of the main shaft 31. At this time, both the locking element 329 and the stop block 327 are fixedly connected to the main inner shaft 311, i.e., fixedly connected to the main shaft 31. Since the locking component 329 is part of the modular control component, the control component can be installed as a whole on the main shaft 31 via the locking component 329. The extension directions of the first rotating shaft 3306, the second rotating shaft 3307, and the multiple third rotating shafts 3308 of the control component are all parallel to the extension direction of the main shaft 31. When the first swing arm 322 rotates relative to the first rotating shaft 3306, the first swing arm 322 can rotate relative to the main inner shaft 311 (that is, the entire main shaft 31); when the second swing arm 325 rotates relative to the second rotating shaft 3307, the second swing arm 325 can rotate relative to the main inner shaft 311 (that is, the entire main shaft 31). In other words, the first end 3221 of the first swing arm 322 can be rotatably connected to the main shaft 31 via the first rotating shaft 3306, and the first end 3251 of the second swing arm 325 can be rotatably connected to the main shaft 31 via the second rotating shaft 3307. Furthermore, since the stop block 327 and the fixing part 3291 of the locking member 329 are stacked, the stop block 327 and the locking member 329 can make full use of the thickness space perpendicular to the main support surface 3111 to increase the space utilization of the main shaft 31, which is beneficial to the thinning of the entire folding assembly 3. In addition, by stacking the stop block 327 between the fixing part 3291 of the locking member 329 and the main inner shaft 311, the stop block 327 and the locking member 329 can be jointly fixed to the main inner shaft 311 by only one fixing structure (such as the threaded connection structure of the limiting member 3281 and the protrusion 3115 in this embodiment), which effectively reduces the number of fixing structures, simplifies the structure of the main inner shaft 311, and reduces the production cost of the folding assembly 3.

[0167] See also Figure 22A , Figure 22B , Figure 26 as well as Figure 27ABecause the fixing part 3291 of the locking member 329 is fixed to the inner main shaft 311 of the main shaft 31, the locking member 329 cannot move relative to the main shaft 31 in the extending direction of the main shaft 31. Furthermore, because the first locking part 3292 of the locking member 329 engages with the first limiting groove 3221h and the second locking part 3293 engages with the second limiting groove 3251h, neither the first swing arm 322 nor the second swing arm 325 can move relative to the main shaft 31 in the extending direction of the main shaft 31. In other words, the locking member 329 is used to restrict the movement of the first swing arm 322 and the second swing arm 325 in the extending direction of the main shaft 31.

[0168] like Figure 27A and Figure 27B As shown, when the first swing arm 322 and the second swing arm 325 are in the open state, the first stop end face 3221c of the first swing arm 322 abuts against the first stop surface 3272a of the stop block 327. The first stop surface 3272a and the first stop portion 3272 of the stop block 327 are both partially located in the first clearance space 3221b of the first swing arm 322, and the first compensation block 3221d of the first swing arm 322 is at least partially located in the first clearance hole 3112 of the main inner shaft 311. The second stop end face 3251c of the second swing arm 325 abuts against the second stop surface 3273a of the stop block 327. The second stop surface 3273a and the second stop portion 3273 of the stop block 327 are both partially located in the second clearance space 3251b of the second swing arm 325, and the second compensation block 3251d of the second swing arm 325 is at least partially located in the second clearance hole 3113 of the main inner shaft 311.

[0169] During the relative folding process of the first swing arm 322 and the second swing arm 325, the first swing arm 322 rotates counterclockwise, and the first stop end face 3221c of the first swing arm 322 moves away from the first stop face 3272a of the stop block 327. One end of the first compensation block 3221d of the first swing arm 322 approaches the stop block 327 and rotates into the first clearance groove 3272b of the stop block 327. The second swing arm 325 rotates clockwise, and the second stop end face 3251c of the second swing arm 325 moves away from the second stop face 3273a of the stop block 327. The second compensation block 3251d of the second swing arm 325 moves away from the stop block 327 and rotates into the second clearance groove 3273b of the stop block 327. It should be noted that the rotation directions of the first swing arm 322 and the second swing arm 325 in the embodiments of this application are described according to the directions shown in the figure. In the actual use of the product, the rotation directions of the two can also be interchanged.

[0170] When the first swing arm 322 and the second swing arm 325 are in the closed state, the included angle between the first stop end face 3221c and the first stop face 3272a of the first swing arm 322 reaches a preset maximum value, at least a portion of the first compensation block 3221d of the first swing arm 322 is located in the first clearance groove 3272b of the stop block 327, and the first stop portion 3272 of the stop block 327 can be partially located between the first rotating shaft 3306 and the first compensation block 3221d; the included angle between the second stop end face 3251c and the second stop face 3273a of the second swing arm 325 reaches a preset maximum value, at least a portion of the second compensation block 3251d of the second swing arm 325 is located in the second clearance groove 3273b of the stop block 327, and the second stop portion 3273 of the stop block 327 can be partially located between the second rotating shaft 3307 and the second compensation block 3251d.

[0171] During the relative unfolding of the first swing arm 322 and the second swing arm 325, the first swing arm 322 rotates clockwise, and its first stop end face 3221c approaches the first stop face 3272a of the stop block 327. One end of the first compensation block 3221d of the first swing arm 322 moves away from the stop block 327 and engages in the first clearance hole 3112. The second swing arm 325 rotates counterclockwise, and its second stop end face 3251c approaches the second stop face 3273a of the stop block 327. One end of the second compensation block 3251d in the second swing arm 325 moves away from the stop block 327 and engages in the second clearance hole 3113.

[0172] In this embodiment, by setting a stop-fit ​​structure between the first stop surface 3272a of the stop block 327 and the first stop end surface 3221c of the first swing arm 322, and a stop-fit ​​structure between the second stop surface 3273a of the stop block 327 and the second stop end surface 3251c of the second swing arm 325, it is possible to prevent the first swing arm 322 and the second swing arm 325 from continuing to rotate relative to each other when they are unfolded to the open state. Thus, the included angle between the first swing arm 322 and the second swing arm 325 can reach a preset angle, avoiding excessive rotation. Furthermore, by using an independent stop block 327 to stop the two swing arms (322, 325), it is possible to prevent the two swing arms (322, 325) from squeezing the cover (312, 313, 314) of the main shaft 31 when it is in the open state, preventing deformation of the main shaft 31 and ensuring the flatness of the main shaft 31. Furthermore, this embodiment can achieve the stopping function of the two swing arms (322, 325) using only one stop block 327, which can effectively reduce the number of stop blocks 327 required for the folding assembly 3 and reduce the space occupied by the stop blocks 327 inside the folding assembly 3.

[0173] In some embodiments, the main shaft 31 further includes a center surface 317, and the first stop surface 3272a and the second stop surface 3273a are symmetrical about the center surface 317, as are the first swing arm 322 and the second swing arm 325. It should be noted that, in this application, the center surface 317 is defined as perpendicular to the main support surface 3111 and parallel to the extension direction of the main shaft 31. In this application, by making the two stop surfaces (3272a, 3273a) and the two swing arms (322, 325) symmetrical about the same surface, when the first swing arm 322 abuts against the first stop surface 3272a, the second swing arm 325 can also simultaneously abut against the second stop surface 3273a. That is, when the first swing arm 322 and the second swing arm 325 are in the open state, when the included angle between the first swing arm 322 and the second swing arm 325 reaches the preset value, the first swing arm 322 partially abuts against the first stop surface 3272a and the second swing arm 325 partially abuts against the second stop surface 3273a. The first stop surface 3272a and the second stop surface 3273a simultaneously achieve the stopping effect on the first swing arm 322 and the second swing arm 325. The first swing arm 322 and the second swing arm 325 can no longer rotate relative to the main shaft 31, and the included angle between the first swing arm 322 and the second swing arm 325 reaches the preset value and no longer increases.

[0174] For simplicity, the main shaft 31 is defined to have a first direction and a second direction, wherein the first direction is perpendicular to the main support surface 3111, and the second direction is perpendicular to the first direction and perpendicular to the extension direction of the main shaft 31. At this time, the first direction is parallel to the center plane 317 of the main shaft 31, and the second direction is perpendicular to the center plane 317 of the main shaft 31. Because the first stop surface 3272a and the second stop surface 3273a are symmetrical about the center plane 317, while the first swing arm 322 abuts against the first stop surface 3272a, the second swing arm 325 abuts against the second stop surface 3273a. Therefore, the force component from the first swing arm 322 on the first stop surface 3272a in the second direction cancels out the force component from the second swing arm 325 on the second stop surface 3273a in the second direction, achieving force balance in the second direction for the stop block 327. The force component from the first swing arm 322 on the first stop surface 3272a, the force component from the second swing arm 325 on the second stop surface 3273a in the first direction, and the force from the fixing structure (i.e., the limiting member 3281 in this embodiment) on the stop block 327 form a set of balanced forces, achieving force balance in the first direction for the stop block 327. The fixing structure exerts only a force along the first direction on the main inner shaft 311, without any force in the second direction. Therefore, the main shaft 31 has high stability, and the entire bottom connecting assembly 32 has high stability. In addition, the forces exerted by the first swing arm 322 and the second swing arm 325 on the stop block 327 are balanced in the second direction, which reduces the deformation of the stop block 327 after being squeezed, and helps to ensure precise control of the included angle when the first swing arm 322 and the second swing arm 325 are opened relative to each other. For example, the angle α between the first stop surface 3272a and the center surface 317 is in the range of 0° to 45°. By controlling the range of the angle α between the first stop surface 3272a and the center surface 317, the component of the force exerted by the first swing arm 322 on the stop block 327 in the second direction can be greater than the component in the first direction, and the component of the force exerted by the second swing arm 325 on the stop block 327 in the second direction can be greater than the component in the first direction. Furthermore, the components of the force exerted by the first swing arm 322 on the stop block 327 in the second direction and the component of the force exerted by the second swing arm 325 on the stop block 327 in the second direction will cancel each other out, thus effectively reducing the magnitude of the resultant force on the stop block 327 from the swing arms (322, 325). Therefore, reducing the interaction force between the stop block 327 and the fixed structure (i.e., the limiting member 3281) and reducing the interaction force between the fixed structure and the main inner shaft 311 helps to increase the structural safety of the fixed structure and the safety of the folding assembly 3. For example, the angle α between the first stop surface 3272a and the center surface 317 can be in the range of 5° to 25°. Further, the angle α between the first stop surface 3272a and the center surface 317 can be in the range of 8° to 15°, for example, 10° or 12°.

[0175] For example, the first stop surface 3272a and the second stop surface 3273a can both be planes to reduce the machining difficulty of the stop block 327 and improve machining accuracy. In this case, the first stop end surface 3221c of the first swing arm 322 and the second stop end surface 3251c of the second swing arm 325 can also be correspondingly set as planes, making the machining difficulty of the first swing arm 322 and the second swing arm 325 lower and the accuracy higher. It can be understood that in this embodiment, the angle α between the first stop surface 3272a and the center surface 317 is the angle between the two planes.

[0176] In some embodiments, when the angle α between the first stop surface 3272a and the center surface 317 is greater than 0°, the angle between the first swing arm 322 and the second swing arm 325 in the open state can be controlled by adjusting the relative position of the stop block 327 and the main shaft 31 in the thickness direction (i.e., the first direction) of the folding assembly 3. Specifically, when the first swing arm 322 and the second swing arm 325 are in the open state, if the angle between the first swing arm 322 and the second swing arm 325 is greater than a preset value, the limiting member 3281 can be rotated so that the limiting end 2381a of the limiting member 3281 approaches the main shaft 31 along the first direction. The stop block 327 approaches the main shaft 31 under the push of the limiting end 2381a of the limiting member 3281 and squeezes the elastic member 3282, which is further compressed. At this time, the first stop surface 3272a of the stop block 327 presses against the first stop end surface 3221c of the first swing arm 322. Under the action of the pressing force, the first swing arm 322 rotates counterclockwise. The second stop surface 3273a of the stop block 327 presses against the second stop end surface 3251c of the second swing arm 325. Under the action of the pressing force, the second swing arm 325 rotates clockwise. The included angle between the first swing arm 322 and the second swing arm 325 can be reduced to a preset value. When the first swing arm 322 and the second swing arm 325 are in the open state, if the included angle between the first swing arm 322 and the second swing arm 325 is less than the preset value, the limiting member 3281 can be rotated in the opposite direction, so that the limiting end 2381a of the limiting member 3281 moves away from the main shaft 31 along the first direction. Under the elastic force of the elastic member 3282, the stop block 327 will move away from the main shaft 31 along with the limiting end 2381a. The compression amount of the elastic member 3282 is reduced. At this time, the first stop surface 3272a of the stop block 327 is away from the first stop end surface 3221c of the first swing arm 322, and a gap is formed between the first stop surface 3272a of the stop block 327 and the first stop end surface 3221c of the first swing arm 322. The second stop surface 3273a of the stop block 327 is away from the second stop end surface 3251c of the second swing arm 325, and a gap is formed between the second stop surface 3273a of the stop block 327 and the second stop end surface 3251c of the second swing arm 325. The first swing arm 322 and the second swing arm 325 can continue to rotate relative to each other, and the angle between the first swing arm 322 and the second swing arm 325 can be increased to a preset value.

[0177] That is, when the angle α between the first stop surface 3272a and the center surface 317 is greater than 0°, and the first swing arm 322 and the second swing arm 325 are in the open state, by adjusting the relative position of the stop block 327 and the main shaft 31 in the first direction through the adjusting component 328, the first stop end face 3221c of the first end 3221 of the first end of the first swing arm 322 is moved away from or pressed against the first stop surface 3272a, and the rotation angle of the first swing arm 322 can be further adjusted. Similarly, the first end 3251 of the second swing arm 325 is moved away from or pressed against the second stop surface 3273a, and the rotation angle of the second swing arm 325 can be further adjusted. Ultimately, the purpose of adjusting the angle between the first swing arm 322 and the second swing arm 325 in the open state is achieved.

[0178] Please see Figure 28A , Figure 28A yes Figure 27B The diagram shown is a structural schematic of another embodiment.

[0179] In some other embodiments, the first stop surface 3272a and the second stop surface 3273a may also be curved surfaces. For example, the first stop surface 3272a is a convex curved surface that protrudes away from the center surface 317, and the first stop end surface 3221c is a concave curved surface that is concave towards the first end 3221 of the first swing arm 322; the second stop surface 3273a is a convex curved surface that protrudes away from the center surface 317, and the second stop end surface 3251c is a concave curved surface that is concave towards the first end 3251 of the second swing arm 325. In this case, the angle α between the first stop surface 3272a and the center surface 317 refers to the angle between the first stop surface 3272a and the plane formed by the two edges in the first direction and the center surface 317. When the second stop surface 3273a is curved, the first stop surface 3272a can also be referenced, which will not be elaborated here. By making the first stop end surface 3221c of the first swing arm 322, the first stop surface 3272a, the second stop end surface 3251c of the second swing arm 325, and the second stop surface 3273a curved, the contact area between the first stop end surface 3221c of the first swing arm 322 and the first stop surface 3272a, and the contact area between the second stop end surface 3251c of the second swing arm 325 and the second stop surface 3273a, when the first swing arm 322 and the second swing arm 325 are in the open state, the stress concentration at the contact point is reduced, the local deformation of the stop block 327 is reduced, and it is beneficial to ensure the precise control of the included angle when the first swing arm 322 and the second swing arm 325 are relatively open.

[0180] Please see Figure 28B , Figure 28B yes Figure 27BThe diagram shown is a structural schematic of another embodiment.

[0181] In other embodiments, the position of the elastic element 3282 can also be changed. For example, the elastic element 3282 can be located between the protrusion 3115 of the main inner shaft 311 of the main shaft 31 and the bottom wall of the limiting groove 3271b of the stop block 327. The elastic element 3282 is in a compressed state and abuts against the protrusion 3115 of the main shaft 31 and the limiting end 2381a of the limiting element 3281. At this time, the elastic element 3282 is still in a compressed state and can still provide the necessary elastic force during the adjustment of the angle between the first swing arm 322 and the second swing arm 325 when they are open. A necessary gap is reserved between the stop block 327 and the fixing part 3291 of the locking member 329, and the fixing part of the locking member is fixedly connected to the main inner shaft 311 by other fasteners. This gap is used to provide adjustment space for the stop block 327.

[0182] Please see Figure 28C , Figure 28C yes Figure 27B The diagram shown is a structural schematic of another embodiment.

[0183] In some embodiments, the adjusting component 328 may not have the elastic element 3282. The adjusting component 328, through the limiting end 2381a of the limiting element 3281 and the main inner shaft 311, jointly restricts the movement space of the stop block 327 in the first direction. It is understood that, at this time, a necessary gap is reserved between the stop block 327 and the fixing part of the locking element 329, and a necessary gap is also reserved between the stop block 327 and the protrusion 3115 of the main inner shaft 311. Furthermore, the fixing part 3291 of the locking element 329 is fixedly connected to the main inner shaft 311 by other fasteners. In one possible usage scenario, when the first swing arm 322 and the second swing arm 325 are deployed relative to each other, the first stop surface 3272a of the stop block 327 continuously abuts against the first stop end surface 3221c of the first end 3221 of the first swing arm 322, and the first end 3221 of the first swing arm 322 pushes the first stop portion 3272 of the stop block 327 to move along the first direction. The second stop surface 3273a of the stop block 327 continuously abuts against the second stop end surface 3251c of the first stop end 3251 of the second swing arm 325, and the first end 3251 of the second swing arm 325 pushes the second stop portion 3273 of the stop block 327 to move along the first direction. Therefore, the entire stop block 327 moves away from the main inner shaft 311 along the first direction and ultimately abuts against the limiting end 2381a of the limiting member 3281. Therefore, the stop block 327 no longer moves, and the first stop surface 3272a and the second stop surface 3273a of the stop block 327 also no longer move. The first swing arm 322 and the second swing arm 325 no longer rotate relative to each other, and the stop block 327 provides a stopping effect on the first swing arm 322 and the second swing arm 325. When it is necessary to adjust the angle between the first swing arm 322 and the second swing arm 325 in the open state, it is only necessary to adjust the relative distance between the limiting member 3281 and the main inner shaft 311 in the first direction.

[0184] In some other embodiments, for example, the limiting member 3281 of the adjusting component 328 may also be other adjustable structures.

[0185] For example, the adjusting assembly 328 still includes a limiting member 3281 and an elastic member 3282, where the limiting member 3281 can be a nut. Furthermore, the protrusion 3115 of the main shaft 31 has an external thread, and the nut is threadedly connected to the protrusion 3115 with the external thread. The elastic member 3282 is in a compressed state, and the elastic force of the elastic member 3282 causes the stop block 327 to abut against the nut, thus limiting the stop block 327. By rotating the nut, the relative position of the limiting member 3281 and the main inner shaft 311 in the first direction can be adjusted, thereby adjusting the relative position of the stop block 327 and the main inner shaft 311 in the first direction. This adjusts the angle between the first swing arm 322 and the second swing arm 325 when they are in the open state.

[0186] For example, the adjusting assembly 328 includes a limiting member 3281 but no elastic member 3282. The limiting member 3281 can be a nut. The protrusion 3115 of the main shaft 31 has external threads. The protrusion 3115 passes through the limiting groove 3271b and the through hole 3271a of the stop block 327 and is partially exposed. The nut is threadedly connected to the protrusion 3115 with external threads. Through the adjustable limiting action of the nut, the pushing of the first swing arm 322, and the pushing of the second swing arm 325, the angle between the first swing arm 322 and the second swing arm 325 when they are in the open state can be adjusted.

[0187] Please see Figure 28D , Figure 28D yes Figure 27B A schematic diagram of the structure in another embodiment.

[0188] In some embodiments, the bottom connecting assembly 32 may not include the adjusting assembly 328, and the fixing portion 3291 of the stop block 327 and the locking member 329 may be fixed to the main inner shaft 311 of the spindle 31 solely by the fastener 320. For example, the fastener 320 may be a screw. The fastener 320 is threaded into the threaded hole of the protrusion 3115, and one end of the stop block 327 abuts against the fastener 320, while the other end abuts against the fixing portion 3291 of the locking member 329. In this case, the stop block 327 is relatively fixed to the main inner shaft 311, and the first stop surface 3272a of the stop block 327 can still stop the first rocker arm 322, and the second stop surface 3273a of the stop block 327 can still stop the second rocker arm 325. In some other embodiments, the fastener 320 can also be connected to the bottom cover 312 at the same time. The bottom cover 312, the stop block 327, the fixing part 3291 of the locking member 329 and the main inner shaft 311 form a locked state. The bottom cover 312 and the main inner shaft 311 jointly fix the stop block 327 and the locking member 329. The overall structure has high strength, which is beneficial to reduce the degree of deformation of the main shaft 31 in the open state.

[0189] It is understood that in other embodiments, the connection between the main inner shaft 311, the locking member 329, and the stop block 327 can also be achieved in other ways. For example, the stop block 327 is movably connected to the locking member 329 by screws, bolts, or other means, and the locking member 329 is fixedly connected to the main inner shaft 311 by screws, bolts, or other means. The relative position between the stop block 327 and the main inner shaft 311 can be adjusted by adjusting the relative position between the stop block 327 and the locking member. Alternatively, the locking member 329 and the stop block 327 are arranged at intervals along the extension direction of the main shaft 31, the stop block 327 is movably connected to the main inner shaft 311, the elastic member 3282 abuts against the stop block 327 and the main inner shaft 311, and the locking member 329 is fixedly connected to the main inner shaft 311, allowing direct adjustment of the relative position between the stop block 327 and the main inner shaft 311. At this time, there is no stacking relationship between the locking component 329 and the stop block 327, and the protrusion 3115 of the main spindle 31 can be directly embedded into the limiting groove 3271b of the locking block. This application does not strictly limit the connection method between the main inner spindle 311, the locking component 329 and the stop block 327.

[0190] In some other embodiments, the stop block 327 and the locking member 329 can also be formed together as an integrally molded limiting connector to achieve higher structural strength. The following description, in conjunction with the accompanying drawings, illustrates specific embodiments of the limiting connector and its application to the bottom connecting assembly 32. Other structural details can be found in the preceding embodiments and will not be repeated hereafter.

[0191] Please refer to the following: Figure 28E and Figure 28F , Figure 28E This is a structural diagram of the limiting connector. Figure 28F yes Figure 28E The diagram shown is a structural schematic from another perspective.

[0192] In some embodiments, the limiting connector 390 is an integrally formed structural component, with a portion of its structure forming a stop block 327 and a portion forming a locking component 329. The locking component 329 may include a fixing portion 3291, a first locking portion 3292, and a second locking portion 3293. The stop block 327 may include a first stopping portion 3272 and a second stopping portion 3273. The first locking portion 3292 and the second locking portion 3293 are both fixed to both sides of the fixing portion 3291, with the first stopping portion 3272 fixed to the first locking portion 3292 and the second stopping portion 3273 fixed to the second locking portion 3293. The fixing portion 3291 may be generally plate-shaped, and may also have a through hole 3291a connecting the upper and lower end faces of the fixing portion 3291. The first locking portion 3292 is provided with a first through hole 3292a, and the second locking portion 3293 is provided with a second through hole 3293a. The first stop portion 3272 may be provided with a first stop surface 3272a, which is formed on the end face of the first stop portion 3272 facing away from the fixing portion 3291. For example, the first stop surface 3272a may be divided into two partial stop surfaces by the first locking portion 3292. The second stop surface 3273 may be provided with a second stop surface 3273a, which is formed on the end face of the second stop portion 3273 facing away from the fixing portion 3291. For example, the second stop surface 3273a may be divided into two spaced-apart partial stop surfaces by the second locking portion 3293.

[0193] The locking member 329 may further include a third locking portion 3294. The third locking portion 3294 may be located between the first locking portion 3292 and the second locking portion 3293, and between the first stop portion 3272 and the second stop portion 3273. For example, the third locking portion 3294 may be fixedly connected to the first locking portion 3292, the second locking portion 3293, the first stop portion 3272, the second stop portion 3273, and the fixing portion 3291. A blind hole 3294a may be provided on the side of the third locking portion 3294 facing away from the fixing portion 3291. The first locking portion 3292, the second locking portion 3293, and the third locking portion 3294 may be plate-shaped and all bent relative to the fixing portion 3291, the first stop portion 3272, and the second stop portion 3273.

[0194] For example, the limiting connector 390 may also be provided with a first clearance groove 3272b and a second clearance groove 3273b, both of which are located between the first stop surface 3272a and the second stop surface 3273a. The first clearance groove 3272b is positioned close to the first stop surface 3272a, and the second clearance groove 3273b is positioned close to the second stop surface 3273a. For instance, the first clearance groove 3272b can be divided into two partial spaces by the first locking portion 3292, where a portion of the wall of one space is formed on the fixing portion 3291, and a portion of the wall of the other space is formed on the third locking portion 3293; similarly, the second clearance groove 3273b can be divided into two partial spaces by the second locking portion 3293, where a portion of the wall of one space is formed on the fixing portion 3291, and a portion of the wall of the other space is formed on the third locking portion 3293.

[0195] It is understood that in some other embodiments, an additional connecting portion may also be provided between the first stop portion 3272 and the second stop portion 3273 to fix the first stop portion 3272 and the second stop portion 3273, thereby enhancing the overall strength of the limiting connector 390. The connection position between the first stop surface 3272a and the first locking portion 3292 may also be changed; for example, the connection position between the first stop surface 3272a and the first locking portion 3292 may be located at one end of the first stop surface 3272a. Similarly, the connection position between the second stop surface 3273a and the second locking portion 3293 may also be changed; for example, the connection position between the second stop surface 3273a and the second locking portion 3293 may be located at one end of the second stop surface 3273a. That is, the first stop surface 3272a may be a complete and continuous plane, and the second stop surface 3273a may be a complete and continuous plane. This application does not impose strict limitations on this.

[0196] It is understood that the first stop portion 3272 and the second stop portion 3273 of the limiting connector 390 constitute the stop block 327. Other details of the stop block 327 in this embodiment can be referred to the relevant description of the stop block 327 in the foregoing embodiments, which will not be elaborated here.

[0197] Furthermore, the fixing part 3291, the first locking part 3292, the second locking part 3293, and the third locking part 3294 of the limiting connector 390 constitute the locking member 329. Other details of the locking member 329 in this embodiment can be referred to the relevant description of the locking member 329 in the foregoing embodiments, which will not be elaborated here.

[0198] In some other embodiments, the stop block and the locking member of the limiting connector 390 can also be assembled into an integral structure.

[0199] Please see Figure 28G , Figure 28G yes Figure 17A The diagram shown is a structural schematic of another embodiment. Figure 28G The slots and protrusions that mate with the first support plate 35 at the second end 3222 of the first swing arm 322 are omitted in this embodiment. The first swing arm 322 in this embodiment may include most of the features of the first swing arm 322 in the previous embodiment. The parts that are the same in both will not be described again. The following mainly describes the differences between the two.

[0200] In some embodiments, the first end portion 3221 of the first swing arm 322 includes a first limiting groove 3221h and a first stop surface 3272a. The first limiting groove 3221h can separate the first stop surface 3221c, dividing it into two spaced parts, one part being close to the first protrusion 3221e of the first swing arm 322, and the other part being close to the second protrusion 3221f of the first swing arm 322. It is understood that the second limiting groove 3251h of the second swing arm 325 can also separate the second stop surface 3251c, dividing it into two spaced parts.

[0201] Please refer to the following: Figure 28H , Figure 28I and Figure 28J .in, Figure 28H yes Figure 26 A partial structural diagram in another embodiment. Figure 28I yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section LL. Figure 28J yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section MM. To better illustrate the structure, Figure 28H The bottom cover 312 is omitted.

[0202] For example, the limiting connector 390 can be installed between the first swing arm 322 and the second swing arm 325 in the control component. For instance, the first locking portion 3292 of the limiting connector 390 can be locked into the first limiting groove 3221h of the first swing arm 322, and the first rotating shaft 3306 can pass through the first through hole 3292a of the first locking portion 3292 of the limiting connector 390 to insert the limiting connector 390; the second locking portion 3293 of the limiting connector 390 can be locked into the second limiting groove 3251h of the second swing arm 325, and the second rotating shaft 3307 can pass through the second through hole 3293a of the second locking portion 3293 of the limiting connector 390 to insert the limiting connector 390; and the third rotating shaft 3308 partially locks into the blind hole 3294a of the third locking portion 3294 of the limiting connector 390 to insert the limiting connector 390. Under the insertion action of the first rotating shaft 3306, the second rotating shaft 3307 and the third rotating shaft 3308, the limiting connector 390, the first swing arm 322, the second swing arm 325, the synchronous gear 340 and the damping assembly 330 form a control component with a modular structure.

[0203] Please refer to the following: Figure 28H and Figure 28K , Figure 28K yes Figure 28H A schematic diagram of the cross-sectional structure after being cut along section NN.

[0204] For example, the control component can be installed between the main inner shaft 311 and the bottom cover 312, for example, it can be installed in the first receiving space 315 of the main shaft 31 (e.g., Figure 11 (As shown). For example, the control component can be fixedly connected to the spindle 31 by fastener 319.

[0205] A protrusion 3115 may be provided on the main inner shaft 311 of the spindle 31, with the protrusion 3115 protruding away from the main support surface 3111. The protrusion 3115 is embedded in the through hole 3291a of the fixing part 3291 of the limiting connector 390, and the protrusion 3115 can limit the limiting connector 390 in the extension direction of the spindle 31. Fasteners 319 can fix the bottom cover 312, the limiting connector 390 and the main inner shaft 311. For example, the fastener 319 can be threaded to the protrusion 3115. Since the limiting connector 390 is part of the modular control component, the control component can be installed on the spindle 31 via the limiting connector 390. The extension directions of the first rotating shaft 3306, the second rotating shaft 3307 and the plurality of third rotating shafts 3308 of the control component are all parallel to the extension direction of the spindle 31. When the first swing arm 322 rotates relative to the first rotating shaft 3306, the first swing arm 322 can rotate relative to the main shaft 31; when the second swing arm 325 rotates relative to the second rotating shaft 3307, the second swing arm 325 can rotate relative to the main shaft 31. That is, the first end 3221 of the first swing arm 322 can be rotatably connected to the main shaft 31 via the first rotating shaft 3306, and the first end 3251 of the second swing arm 325 can be rotatably connected to the main shaft 31 via the second rotating shaft 3307.

[0206] When the first swing arm 322 and the second swing arm 325 are in the open state, the first stop end face 3221c of the first swing arm 322 abuts against the first stop face 3272a of the limiting connector 390; the second stop end face 3251c of the second swing arm 325 abuts against the second stop face 3273a of the limiting connector 390. Specifically, the portion of the first stop end face 3221c of the first stop end face of the first swing arm 322, near the first protrusion 3221e of the first swing arm 322, abuts against the portion of the first stop surface 3272a of the first stop portion 3272 of the limiting connector 390, near the fixing portion 3291; the portion of the first stop end face 3221c of the first stop end face of the first swing arm 322, near the second protrusion 3221f of the first swing arm 322, abuts against the portion of the first stop surface 3272a of the first stop portion 3272 of the limiting connector 390, near the third locking portion 3294. The portion of the second stop end face 3251c of the second stop arm 325 near the first protrusion 3251e of the second stop arm 325 abuts against the portion of the second stop surface 3273a of the second stop portion 3273 of the limiting connector 390 near the fixing portion 3291; the portion of the second stop end face 3251c of the second stop arm 325 near the second protrusion 3251f of the second stop arm 325 abuts against the portion of the second stop surface 3273a of the second stop portion 3273 of the limiting connector 390 near the third locking portion 3294.

[0207] The following text will mainly combine the appendix Figure 28KThe portion of the first stop surface 3272a near the fixing part 3291 and the portion of the second stop surface 3273a near the fixing part 3291 will be described. The portion of the first stop surface 3272a near the third locking part 3294 and the portion of the second stop surface 3273a near the third locking part 3294 can be referred to the description below.

[0208] Specifically, when the first swing arm 322 and the second swing arm 325 are in the open state, the first stop end face 3221c of the first swing arm 322 abuts against the first stop surface 3272a of the limiting connector 390. The first stop surface 3272a and the first stop portion 3272 of the limiting connector 390 are both partially located in the first clearance space 3221b of the first swing arm 322, and the first compensation block 3221d of the first swing arm 322 is at least partially located in the first clearance hole 3112 of the main inner shaft 311. The second stop end face 3251c of the second swing arm 325 abuts against the second stop surface 3273a of the limiting connector 390. The second stop surface 3273a and the second stop portion 3273 of the limiting connector 390 are both partially located in the second clearance space 3251b of the second swing arm 325, and the second compensation block 3251d of the second swing arm 325 is at least partially located in the second clearance hole 3113 of the main inner shaft 311.

[0209] During the relative folding process of the first swing arm 322 and the second swing arm 325, the first swing arm 322 rotates counterclockwise, the first stop end face 3221c of the first swing arm 322 moves away from the first stop face 3272a of the limiting connector 390, and one end of the first compensation block 3221d of the first swing arm 322 approaches the limiting connector 390 and rotates into the first clearance groove 3272b of the limiting connector 390; the second swing arm 325 rotates clockwise, the second stop end face 3251c of the second swing arm 325 moves away from the second stop face 3273a of the limiting connector 390, and the second compensation block 3251d in the second swing arm 325 moves away from the limiting connector 390 and rotates into the second clearance groove 3273b of the limiting connector 390.

[0210] When the first swing arm 322 and the second swing arm 325 are in the closed state, the included angle between the first stop end face 3221c and the first stop face 3272a of the first swing arm 322 reaches a preset maximum value, at least a portion of the first compensation block 3221d of the first swing arm 322 is located in the first clearance groove 3272b of the limiting connector 390, and the first stop portion 3272 of the limiting connector 390 can be partially located between the first rotating shaft 3306 and the first compensation block 3221d; the included angle between the second stop end face 3251c and the second stop face 3273a of the second swing arm 325 reaches a preset maximum value, at least a portion of the second compensation block 3251d of the second swing arm 325 is located in the second clearance groove 3273b of the limiting connector 390, and the second stop portion 3273 of the limiting connector 390 can be partially located between the second rotating shaft 3307 and the second compensation block 3251d.

[0211] During the relative unfolding of the first swing arm 322 and the second swing arm 325, the first swing arm 322 rotates clockwise, and its first stop end face 3221c approaches the first stop face 3272a of the limiting connector 390. One end of the first compensation block 3221d of the first swing arm 322 moves away from the limiting connector 390 and engages in the first clearance hole 3112. The second swing arm 325 rotates counterclockwise, and its second stop end face 3251c approaches the second stop face 3273a of the limiting connector 390. One end of the second compensation block 3251d in the second swing arm 325 moves away from the limiting connector 390 and engages in the second clearance hole 3113.

[0212] In this embodiment, by setting a stop-fit ​​structure between the first stop surface 3272a of the limiting connector 390 and the first stop end surface 3221c of the first swing arm 322, and a stop-fit ​​structure between the second stop surface 3273a of the limiting connector 390 and the second stop end surface 3251c of the second swing arm 325, it is possible to prevent the first swing arm 322 and the second swing arm 325 from continuing to rotate relative to each other when they are relatively unfolded to the open state. Therefore, the included angle between the first swing arm 322 and the second swing arm 325 can reach a preset angle, avoiding excessive rotation. Furthermore, by employing independent limiting connectors 390 to stop the two swing arms (322, 325), the compression of the main shaft 31's housing (312, 313, 314) by the two swing arms (322, 325) when in the open state can be avoided, preventing deformation of the main shaft 31 and ensuring its flatness. In addition, by fixing the housing (312, 313, 314) and the inner main shaft 311 to the limiting connectors 390, the structural strength of the main shaft is increased, and the deformation of the entire main shaft when in the open state is reduced.

[0213] In some embodiments, the main shaft 31 further includes a center surface 317, a first stop surface 3272a and a second stop surface 3273a being symmetrical about the center surface 317, and a first swing arm 322 and a second swing arm 325 being symmetrical about the center surface 317. In this application, by making the two stop surfaces (3272a, 3273a) and the two swing arms (322, 325) symmetrical about the same surface simultaneously, when the first swing arm 322 abuts against the first stop surface 3272a, the second swing arm 325 can also abut against the second stop surface 3273a simultaneously. In this application, by making the two stop surfaces (3272a, 3273a) and the two swing arms (322, 325) symmetrical about the same surface simultaneously, when the folding assembly is relatively unfolded to the open state, while the first swing arm 322 abuts against the first stop surface 3272a, the second swing arm 325 can also abut against the second stop surface 3273a, resulting in high overall coordination of the folding assembly.

[0214] For example, the first stop surface 3272a can also be parallel to the center surface 317, that is, the angle between the first stop surface 3272a and the center surface 317 is 0°. In this embodiment, the first stop surface 3272a, the second stop surface 3273a, and the center surface 317 are parallel to each other. When the first swing arm 322 and the second swing arm 325 are in the open state, the first stop end surface of the first swing arm 322 is parallel to the center surface 317 and abuts against the first stop surface 3272a, and the second stop end surface of the second swing arm 325 is parallel to the center surface 317 and abuts against the second stop surface 3273a. At this point, the first stop end face 3221c, the second stop end face 3251c, and the center surface 317 are parallel to each other. That is, the contact surface between the first swing arm 322 and the limiting connector 390 is parallel to the center surface 317, and the contact surface between the second swing arm 325 and the limiting connector 390 is also parallel to the center surface 317. Therefore, the first swing arm 322 exerts a force parallel to the second direction on the limiting connector 390, but not a force parallel to the first direction; the second swing arm 325 exerts a force parallel to the second direction on the limiting connector 390, but not a force parallel to the first direction. In the second direction, the force exerted by the first swing arm 322 on the limiting connector 390 and the force exerted by the second swing arm 325 on the limiting connector 390 cancel each other out. In the first direction, neither the first swing arm 322 nor the second swing arm 325 exerts any pressure on the limiting connector 390. Since the fastener 319 is used to fix the limiting connector 390 to the main inner shaft 311, when the first swing arm 322 and the second swing arm 325 are in the open state, there is no force exerted by the first swing arm 322 and the second swing arm 325 on the main inner shaft 311 in the first direction. Therefore, by setting the first stop surface 3272a parallel to the center surface 317, the force at the fixed connection between the fastener 319 and the main inner shaft 311 can be effectively reduced, preventing the main inner shaft 311 from deforming in the first direction when the first swing arm 322 and the second swing arm 325 abut against the limiting connector 390, which helps to ensure the flatness of the main support surface 3111 in the open state.

[0215] In some other embodiments, the fastener 319 may not lock the bottom cover 312, that is, the limiting connector 390 is fixed to the main inner shaft 311 by the fastener 319.

[0216] Please refer to the following: Figure 29 and Figure 30 , Figure 29 yes Figure 14 The diagram shown is a structural schematic of the first rotating arm. Figure 30 yes Figure 29 The diagram shows the structure of the first rotating arm at another angle.

[0217] For example, the first rotating arm 323 includes a first end 3231 and a second end 3232. The first end 3231 of the first rotating arm 323 is an arc-shaped arm, and a first clearance notch 3231a is provided in the middle of the first end 3231, with the first clearance notch 3231a facing away from the second end 3232. The second end 3232 of the first rotating arm 323 has a first pivot hole 3232a, located at the end of the first rotating arm 323 facing away from the first end 3231. The second end 3232 of the first rotating arm 323 also has a second clearance notch 3232b, which communicates with the first pivot hole 3232a.

[0218] The first rotating arm 323 further includes a connecting portion 3233 connecting the first end 3231 and the second end 3232. The connecting portion 3233 of the first rotating arm 323 can be bent relative to the first end 3231 of the first rotating arm 323, so that the structural design of the first rotating arm 323 is more flexible and can better meet the connection and shape requirements of the bottom connecting component 32 and the folding component 3. For example, the connecting portion 3233 of the first rotating arm 323 can be provided with a second pivot hole 3233a and a clearance hole 3233b, with the clearance hole 3233b communicating with the second pivot hole 3233a.

[0219] The first rotating arm 323 can be a one-piece molded structural component to achieve high structural strength. For example, the first rotating arm 323 can be formed using metal injection molding or other processes; this application does not impose strict limitations on this.

[0220] For example, the second rotating arm 326 includes a first end 3261 and a second end 3262. The first end 3261 of the second rotating arm 326 is an arc-shaped arm, and a first clearance notch 3261a is provided at the middle of the first end 3261, with the first clearance notch 3261a facing away from the second end 3262. The second end 3262 of the second rotating arm 326 has a first pivot hole 3262a, located at the end of the second rotating arm 326 facing away from the first end 3261. The second end 3262 of the second rotating arm 326 also has a second clearance notch 3262b, which communicates with the first pivot hole 3262a.

[0221] The second rotating arm 326 further includes a connecting portion 3263 connecting the first end 3261 and the second end 3262. The connecting portion 3263 of the second rotating arm 326 can be bent relative to the first end 3261 of the second rotating arm 326, making the structural design of the second rotating arm 326 more flexible and better meeting the connection and shape requirements of the bottom connecting assembly 32 and the folding assembly 3. For example, the connecting portion 3263 of the second rotating arm 326 can be provided with a second pivot hole 3263a and a clearance hole 3263b, with the clearance hole 3263b communicating with the second pivot hole 3263a.

[0222] The second rotating arm 326 can be a one-piece molded structural component to achieve high structural strength. For example, the second rotating arm 326 can be formed using metal injection molding or other processes; this application does not impose strict limitations on this.

[0223] For example, the shape of the first rotating arm 323 can be the same as that of the second rotating arm 326, and the same material can be used to save on the types of materials for the folding assembly 3 and reduce the cost of the folding assembly 3.

[0224] Please see Figure 31A and Figure 31B , Figure 31A yes Figure 14 The diagram shows the structure of the first fixing frame. Figure 31B yes Figure 14 The diagram shows the structure of the first fixing frame at another angle. For example, the first fixing frame 321 may include a pivot hole 3211, a sliding groove 3212, two arc-shaped grooves 3213, and a plurality of fastening holes 3214. The first fixing frame 321 may include multiple mutually fixed parts, and the aforementioned hole or groove structures may be formed in different parts, or some parts may be reused. For example, the first fixing frame 321 includes a rotating connecting block 3215, and the pivot hole 3211 is formed in the rotating connecting block 3215.

[0225] The sliding groove 3212 has two opposing sidewalls, and the recesses of the two opposing sidewalls together form the guide space of the sliding groove 3212. One arc-shaped groove 3213 is located at the bottom of the first fixing frame 321, and one side of the arc-shaped groove 3213 can extend to the bottom surface of the first fixing frame 321. The other arc-shaped groove 3213 is located at the top of the first fixing frame 321, and one side of the arc-shaped groove 3213 can extend to the top surface of the first fixing frame 321.

[0226] Please refer to the following: Figure 4 , Figure 31A as well as Figure 31BIn some embodiments, the first fixing bracket 321 is used to fix it to the first housing 1. The first fixing bracket 321 may further include a locking block 3216, which protrudes and is used to lock into the first housing 1. The locking block 3216 may be provided with a fastening hole 3216a for fixing the first housing 1.

[0227] Please see Figure 32A and Figure 32B , Figure 32A yes Figure 14 The diagram shows the structure of the second fixing frame. Figure 32B yes Figure 14 The diagram shows the structure of the second fixing frame at another angle. For example, the second fixing frame 324 may include a pivot hole 3241, a sliding groove 3242, two arc-shaped grooves 3243, and a plurality of fastening holes 3244. The second fixing frame 324 may include multiple mutually fixed parts, and the aforementioned hole or groove structures may be formed in different parts, or some parts may be reused. For example, the second fixing frame 324 may also include at least one rotating connecting block 3245, in which the pivot hole 3241 is formed.

[0228] The sliding groove 3242 has two opposing sidewalls, and the recesses of the two opposing sidewalls together form the guide space of the sliding groove 3242. One arc-shaped groove 3243 is located at the bottom of the second fixing frame 324, and one side of the arc-shaped groove 3243 can extend to the bottom surface of the second fixing frame 324. The other arc-shaped groove 3243 is located at the top of the second fixing frame 324, and one side of the arc-shaped groove 3243 can extend to the top surface of the second fixing frame 324.

[0229] Please refer to the following: Figure 4 , Figure 32A as well as Figure 32B In some embodiments, the second fixing bracket 324 is used to fix it to the second housing 2. The second fixing bracket 324 may also include a locking block 3246, which protrudes and is used to lock into the second housing 2. The locking block 3246 may be provided with a fastening hole 3246a for fixing the second housing 2.

[0230] The shape of the second fixing frame 324 can be the same as that of the first fixing frame 321, and the same material can be used to save on the types of materials for the folding component 3 and reduce the cost of the folding component 3.

[0231] Please refer to the following: Figure 33 and Figure 34 , Figure 33 This is a schematic diagram of the assembly structure after the bottom connecting component and the main inner shaft are installed. Figure 34 yes Figure 33The diagram shows the structure assembled with the bottom cover. (For better illustration of the structure...) Figure 34 The fasteners between the bottom cover 312 and the main inner shaft 311 are hidden.

[0232] For example, the first rotating arm 323 and the second rotating arm 326 are mounted on the side of the main inner shaft 311 facing away from the main support surface 3111. For instance, the first end 3231 of the first rotating arm 323 and the first end 3261 of the second rotating arm 326 can be mounted in the second receiving space 316 of the main shaft 31. The first clearance notch 3231a of the first rotating arm 323 and the first clearance notch 3261a of the second rotating arm 326 are arranged opposite to each other and together serve to avoid the positioning protrusion on the main inner shaft 311. The positioning protrusion is used for a fixed connection between the main inner shaft 311 and the bottom cover 312. The first clearance notch 3231a of the first rotating arm 323 prevents interference between the first rotating arm 323 and the main inner shaft 311, and the first clearance notch 3261a of the second rotating arm 326 prevents interference between the second rotating arm 326 and the main inner shaft 311. The first swing arm 322 and the first rotating arm 323 are also connected to the first fixed frame 321, and the second swing arm 325 and the second rotating arm 326 are also connected to the second fixed frame 324.

[0233] See also Figure 35 , Figure 35 yes Figure 34 The diagram shows the cross-sectional structure after the structure is cut along the GG section.

[0234] For example, the sliding block 3222a of the second end 3222 of the first swing arm 322 can be installed in the sliding groove 3212 of the first fixed frame 321, and can slide in the sliding groove 3212 of the first fixed frame 321, so as to realize the sliding connection between the second end 3222 of the first swing arm 322 and the first fixed frame 321. The sliding block 3252a of the second end 3252 of the second swing arm 325 can be installed in the sliding groove 3242 of the second fixed frame 324, and can slide in the sliding groove 3242 of the second fixed frame 324, so as to realize the sliding connection between the second end 3252 of the second swing arm 325 and the second fixed frame 324.

[0235] See also Figure 4 and Figure 35In the electronic device 100, a first fixing frame 321 is fixed to a first housing 1, and a second fixing frame 324 is fixed to a second housing 2. When the first housing 1 and the second housing 2 are unfolded or folded relative to each other, the first fixing frame 321 moves with the first housing 1, and the second fixing frame 324 moves with the second housing 2, and the first fixing frame 321 and the second fixing frame 324 rotate relative to each other. Since the first end 3221 of the first swing arm 322 is rotatably connected to the main shaft 31, and the second end 3222 of the first swing arm 322 is slidably connected to the first fixing frame 321, and the first end 3251 of the second swing arm 325 is rotatably connected to the main shaft 31, and the second end 3252 of the second swing arm 325 is slidably connected to the second fixing frame 324, when the first housing 1 and the second housing 2 are unfolded or folded relative to each other, the first fixing frame 321 and the second fixing frame 324 drive the first swing arm 322 and the second swing arm 325 to rotate relative to each other, and rotate relative to the main shaft 31.

[0236] It is understood that in some other embodiments, the second end 3222 of the first swing arm 322 can also be slidably connected to the first fixed frame 321 in other ways, and the second end 3252 of the second swing arm 325 can be slidably connected to the second fixed frame 324 in other ways. For example, the second end 3222 of the first swing arm 322 can be provided with a sliding groove, and the first fixed frame 321 is provided with a slider, which is installed in the sliding groove and can slide in the sliding groove; the second end 3252 of the second swing arm 325 can be provided with a sliding groove, and the second fixed frame 324 is provided with a slider, which is installed in the sliding groove and can slide in the sliding groove. This application does not strictly limit the specific implementation of the sliding connection between the first swing arm 322 and the first fixed frame 321, or the specific implementation of the sliding connection between the second swing arm 325 and the second fixed frame 324.

[0237] See also Figure 29 , Figure 30 as well as Figure 36 , Figure 36 yes Figure 34 The diagram shows the cross-sectional structure after the structure is cut along section HH.

[0238] For example, the first end 3231 of the first rotating arm 323 can be installed in the first arcuate space 3161 of the second receiving space 316 to rotatably connect to the main shaft 31 via a virtual axis; the second end 3232 of the first rotating arm 323 can be rotatably connected to the main shaft 31 via a physical axis. For example, the rotating connecting block 3215 of the first fixing frame 321 can be inserted into the second clearance notch 3232b of the first rotating arm 323, and the rotating shaft 350 passes through the rotating shaft hole 3211 on the rotating connecting block 3215 of the first fixing frame 321 and the first rotating shaft hole 3232a of the second end 3232 of the first rotating arm 323 to realize the rotatable connection between the first rotating arm 323 and the first fixing frame 321. For example, the first end 3261 of the second rotating arm 326 can be installed in the second arcuate space 3162 of the second receiving space 316 to rotatably connect to the main shaft 31 via a virtual axis; the second end 3262 of the second rotating arm 326 can be rotatably connected to the main shaft 31 via a physical shaft. For example, the rotating connecting block 3245 of the second fixing frame 324 can be inserted into the second clearance notch 3262b of the second rotating arm 326, and another rotating shaft 360 passes through the rotating shaft hole 3241 on the rotating connecting block 3245 of the second fixing frame 324 and the first rotating shaft hole 3262a of the second end 3262 of the second rotating arm 326 to realize the rotatable connection between the second rotating arm 326 and the second fixing frame 324.

[0239] That is, the first rotating arm 323 and the second rotating arm 326 are rotatably connected to the main support plate through a virtual axis; the first rotating arm 323 is rotatably connected to the first fixed frame 321 through a physical axis, and the second rotating arm 326 is rotatably connected to the second fixed frame 324 through a physical axis.

[0240] In some other embodiments, the first end 3231 of the first rotating arm 323 and / or the first end 3261 of the second rotating arm 326 may also be rotatably connected to the main shaft 31 via a physical shaft connection, and this application does not impose strict limitations on this. In some other embodiments, the second end 3232 of the first rotating arm 323 may also be rotatably connected to the first fixed frame 321 via a virtual shaft connection; and / or, the second end 3262 of the second rotating arm 326 may also be rotatably connected to the second fixed frame 324 via a virtual shaft connection, and this application does not impose strict limitations on this.

[0241] See also Figure 4 and Figure 36In the electronic device 100, a first fixing frame 321 is fixed to a first housing 1, and a second fixing frame 324 is fixed to a second housing 2. When the first housing 1 and the second housing 2 are unfolded or folded relative to each other, the first fixing frame 321 moves with the first housing 1, and the second fixing frame 324 moves with the second housing 2, and the first fixing frame 321 and the second fixing frame 324 rotate relative to each other. Since the first end 3231 of the first rotating arm 323 is rotatably connected to the main shaft 31, and the second end 3232 of the first rotating arm 323 is rotatably connected to the first fixing frame 321, the first end 3261 of the second rotating arm 326 is rotatably connected to the main shaft 31, and the second end 3262 of the second rotating arm 326 is rotatably connected to the second fixing frame 324, when the first housing 1 and the second housing 2 are unfolded or folded relative to each other, the first fixing frame 321 and the second fixing frame 324 drive the first swing arm 322 and the second swing arm 325 to rotate relative to each other, and rotate relative to the main shaft 31.

[0242] See also Figure 35 and Figure 36 In this embodiment, the first swing arm 322 is rotatably connected to the main shaft 31 and slidably connected to the first fixed frame 321, forming a linkage-slider structure; the first rotating arm 323 is rotatably connected to the main shaft 31 and rotatably connected to the first fixed frame 321, forming a linkage structure; the second swing arm 325 is rotatably connected to the main shaft 31 and slidably connected to the second fixed frame 324, forming a linkage-slider structure; and the second rotating arm 326 is rotatably connected to the main shaft 31 and rotatably connected to the second fixed frame 324, forming a linkage structure. The folding assembly 3 achieves the relative unfolding and folding processes through the linkage-slider structure and the linkage structure. It has few components, simple mating relationships and positions, and easy-to-manufacture and assemble components, which is beneficial for mass production. Furthermore, since the main shaft 31 is linked to the first fixed frame 321 through the first swing arm 322 and the first rotating arm 323, and linked to the second fixed frame 324 through the second swing arm 325 and the second rotating arm 326, the folding assembly 3 has better tensile and compressive strength.

[0243] See also Figure 4 , Figure 35 and Figure 36For example, the first fixing frame 321 is used to fix the first housing 1, and the second fixing frame 324 is used to fix the second housing 2. In this application, the folding assembly 3 controls the movement trajectory of the first fixing frame 321 and the first housing 1 through the first swing arm 322 and the first rotating arm 323, and controls the movement trajectory of the second fixing frame 324 and the second housing 2 through the second swing arm 325 and the second rotating arm 326. This allows the first fixing frame 321 to move the first housing 1 towards the main shaft 31 and the second fixing frame 324 to move the second housing 2 towards the main shaft 31 during the relative folding process of the first housing 1 and the second housing 2. Conversely, during the relative unfolding process of the first housing 1 and the second housing 2, the first fixing frame 321 to move the first housing 1 away from the main shaft 31 and the second fixing frame 324 to move the second housing 2 away from the main shaft 31. In other words, the folding assembly 3 can realize the inward pulling movement of the housing during the change from the open state to the closed state of the folding device 10, and the outward pushing movement of the housing during the change from the closed state to the open state of the folding device 10. Furthermore, this enables the electronic device 100 to undergo deformation motion centered on the flexible display screen 20 during unfolding or folding, thereby reducing the risk of pulling or squeezing the flexible display screen 20, protecting the flexible display screen 20, improving the reliability of the flexible display screen 20, and giving the flexible display screen 20 and the electronic device 100 a longer service life.

[0244] When the first housing 1 and the second housing 2 rotate relative to each other to the open state, the first fixing bracket 321 and the second fixing bracket 324 will also rotate relative to each other to the open state. Subsequently, the first swing arm 322 and the second swing arm 325 will also rotate relative to each other to the open state. At this time, the first stop end face 3221c of the first end 3221 of the first swing arm 322 abuts against the first stop portion 3272 of the stop block 327, and the second stop end face 3251c of the first end 3251 of the second swing arm 325 abuts against the second stop portion 3273 of the stop block 327. The stop block 327 prevents the relative rotation angle between the first swing arm 322 and the second swing arm 325 from exceeding a preset value, thereby preventing the relative rotation angle between the first fixing bracket 321 and the second fixing bracket 324 from exceeding a preset value, and preventing the relative rotation angle between the first housing 1 and the second housing 2 from exceeding a preset value. Therefore, the stop block 327 stops the first swing arm 322 and the second swing arm 325, which can prevent the first housing 1 and the second housing 2 from over-folding when the electronic device 100 is in the open state, thereby avoiding the flexible display screen 20 from being pulled by the first housing 1 and the second housing 2, so as to improve the reliability of the flexible display screen 20 and increase the service life of the flexible display screen 20.

[0245] In addition, by stopping the first swing arm 322 and the second swing arm 325 through the stop block 327, the angle between the first housing 1 and the second housing 2 in the open state is equal to a preset value. When the preset value is 180°, the folding device 10 provides a flat support environment for the flexible display screen 20. The flatness of the flexible display screen 20 is good, so as to optimize the overall light and shadow of the electronic device 100.

[0246] It is understandable that during the parts preparation and assembly process of the folding device 10, slight deviations may occur due to equipment, processes, etc., resulting in insufficient precision of the assembled product, such as the angle between the two shells (1, 2) exceeding the preset value in the open state. In this embodiment, after the entire folding device 10 is assembled, the included angle between the first shell 1 and the second shell 2 can be detected when the folding device 10 is in the open state. If the included angle between the first shell 1 and the second shell 2 deviates from the preset value, the position of the stop block 327 can be adjusted by adjusting the component 328, thereby adjusting the included angle between the first swing arm 322 and the second swing arm 325, and the included angle between the first fixing frame 321 and the second fixing frame 324, so as to adjust the angle between the first shell 1 and the second shell 2 so that the angle between the first shell 1 and the second shell 2 can become the preset value.

[0247] Furthermore, during the relative rotation of the first swing arm 322 and the second swing arm 325, multiple friction surfaces of the control component generate frictional torque and damping force, resulting in a smooth feel and a better user experience when the user rotates the first housing 1 and the second housing 2. Additionally, if the external force is removed during the opening of the electronic device 100, the angle between the first housing and the second housing remains unchanged under the action of the damping force, forming a hovering state. In the aforementioned embodiment, the damping component 330 is disposed between the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325. The first locking block 3301 and the second locking block 3302 both form a locking structure with the first swing arm 322, and both form a locking structure with the second swing arm 325, thereby realizing the damping effect of the damping component 330 on the first swing arm 322 and the second swing arm 325. In some other embodiments, there may be two damping components, respectively located at the sliding connection between the first fixed frame and the second end of the first swing arm, and at the sliding connection between the second fixed frame and the second end of the second swing arm. It is understood that in this case, the damping engagement structure in the first end of the first swing arm may be located at the second end of the first swing arm and engage with one of the damping components, and the damping engagement structure in the first end of the second swing arm may be located at the second end of the second swing arm and engage with the other damping component, thereby achieving a damping effect on the first and second swing arms. The damping engagement structure of the first and second swing arms adapts to the structure of the damping components.

[0248] Please refer to the following: Figure 37 , Figure 38 as well as Figure 39 , Figure 37 yes Figure 5 The diagram shows a partial structural schematic of the first and second support plates. Figure 38 This is a magnified structural diagram of a portion of the folding component at the bottom connection point. Figure 39 yes Figure 38 The diagram shows the structure after it has been folded left and right.

[0249] For example, such as Figure 37 As shown, the first support plate 35 may include a first plate body 351. A first support surface 3511 is formed on one side of the first plate body 351, and a first fixing surface 3512 is formed on the other side of the first plate body 351. The first support plate 35 may also include a plurality of spaced first rotating blocks 352, which are disposed on the first fixing surface 3512. The first support plate 35 may also include a first guide block 353, which is disposed on the first fixing surface 3512 and has a guide hole 3531. In some embodiments, the first support plate 35 may also include a first support block 354, which is disposed on the first fixing surface 3512. The first support block 354 has an arc-shaped support surface 3541, which faces away from the first fixing surface 3512. The support surface 3541 may be a concave curved surface.

[0250] The second support plate 36 may include a second plate body 361. A second support surface 3611 is formed on one side of the second plate body 361, and a second fixing surface 3612 is formed on the other side of the second plate body 361. The second support plate 36 may also include a plurality of spaced second rotating blocks 362, which are disposed on the second fixing surface 3612. The second support plate 36 may also include a second guide block 363, which is disposed on the second fixing surface 3612 and has a guide hole 3631. In some embodiments, the second support plate 36 may also include a second support block 364, which is disposed on the second fixing surface 3612. The second support block 364 has an arc-shaped support surface 3641, which faces away from the second fixing surface 3612. The support surface 3641 may be a concave curved surface 3641.

[0251] For example, see reference Figure 13 , Figure 37 as well as Figure 38The first support plate 35 and the second support plate 36 are connected to the bottom connecting assembly 32. The first fixing surface 3512 of the first support plate 35 faces the bottom connecting assembly 32, and the first support plate 35 can connect the first fixing frame 321 and the first rotating arm 323 through multiple structures fixed to its first fixing surface 3512. The second fixing surface 3612 of the second support plate 36 faces the bottom connecting assembly 32, and the second support plate 36 can connect the second fixing frame 324 and the second rotating arm 326 through multiple structures fixed to its second fixing surface 3612.

[0252] See also Figure 4 and Figure 39 For example, when the folding assembly 3 is in the open state, the first support plate 35 and the second support plate 36 are located on both sides of the main shaft 31, respectively. The first support surface 3511 of the first support plate 35, the main support surface 3111 of the main shaft 31, and the second support surface 3611 of the second support plate 36 face the same direction. These three can be parallel to each other, for example, they can be flush, to provide a flatter support environment for the bending portion 202 of the flexible display screen 20.

[0253] When the folding assembly 3 is in the open state, the first compensation block 3221d of the first end 3221 of the first swing arm 322 and the first locking part 3292 of the locking member 329 are located in the first clearance hole 3112 of the main inner shaft 311; the second compensation block 3251d of the first end 3251 of the second swing arm 325 and the second locking part 3293 of the locking member 329 are located in the second clearance hole 3113 of the main inner shaft 311; and the end parts of the first rotating arm 323 and the second rotating arm 326 are located in the third clearance hole 3114. Due to the filling effect of the first compensation block 3221d, the first locking part 3292, the first rotating arm 323, the second compensation block 3251d, the second locking part 3293, and the second rotating arm 326 on the clearance hole in the main inner shaft 311, and the arrangement of the first support plate 35, the second support plate 36, and the main inner shaft 311 in the electronic device 100 corresponding to the bending part 202 of the flexible display screen 20, it is not easy for obvious dents to occur at the bending part 202 of the flexible display screen 20 when the electronic device 100 is in the open state. When the folding assembly 3 is in the open state, one end face of the first compensation block 3221d, one end face of the first locking part 3292, one end face of the second compensation block 3251d, one end face of the second locking part 3293, the end face of the first end 3231 of the first rotating arm 323, the end face of the first end 3261 of the second rotating arm 326, and the main support surface 3111 of the main inner shaft 311 are joined together to form a relatively regular planar support structure. Therefore, when the electronic device 100 is in the open state, the flatness of the bending part 202 of the entire flexible display screen 20 is high, resulting in a good user viewing experience.

[0254] See also Figure 36 and Figure 40 , Figure 40 yes Figure 38 A schematic diagram of the cross-sectional structure after being cut along section II.

[0255] For example, the first support plate 35 is slidably connected to the first rotating arm 323. For instance, the first guide block 353 of the first support plate 35 is installed in the clearance hole 3233b of the connecting portion 3233 of the first rotating arm 323, and the rotating shaft 370 passes through the second rotating shaft hole 3233a of the connecting portion 3233 of the first rotating arm 323 and the guide hole 3531 of the first guide block 353 of the first support plate 35, thereby achieving a slidable connection between the first rotating arm 323 and the first support plate 35. The second guide block 363 of the second support plate 36 is installed in the clearance hole 3263b of the connecting portion 3263 of the second rotating arm 326, and another rotating shaft 380 passes through the second rotating shaft hole 3263a of the connecting portion 3263 of the second rotating arm 326 and the guide hole 3631 of the second guide block 363 of the second support plate 36, thereby achieving a slidable connection between the second rotating arm 326 and the second support plate 36. It is understood that in some other embodiments, the sliding connection between the first rotating arm 323 and the first support plate 35, and the sliding connection between the second rotating arm 326 and the second support plate 36 can also be achieved through the cooperation structure of the slider and the slide rail or other cooperation structures. This application does not strictly limit this.

[0256] Please see Figure 41 , Figure 41 yes Figure 38 A schematic diagram of the cross-sectional structure after being cut along section JJ.

[0257] For example, the first support plate 35 is rotatably connected to the first fixing frame 321. For instance, the first rotating block 352 of the first support plate 35 is installed in the arcuate groove 3213 of the first fixing frame 321 to achieve the rotatable connection between the first support plate 35 and the first fixing frame 321. The second support plate 36 is rotatably connected to the second fixing frame 324. For instance, the second rotating block 362 of the second support plate 36 is installed in the arcuate groove 3243 of the second fixing frame 324 to achieve the rotatable connection between the second support plate 36 and the second fixing frame 324. That is, the first support plate 35 and the second support plate 36 are rotatably connected to the first fixing frame 321 and the second fixing frame 324 respectively through virtual axes. It is understood that the first support plate 35 and / or the second support plate 36 can also be rotatably connected to the first fixing frame 321 and / or the second fixing frame 324 through physical axes, and this application does not strictly limit this.

[0258] It is understood that in this embodiment, the number of sets of the mating structure between the first rotating block 352 and the arc-shaped groove 3213 is two. In other embodiments, the number of sets of the mating structure between the first rotating block 352 and the arc-shaped groove 3213 may also be one or more. Similarly, the number of sets of the mating structure between the second rotating block 362 and the arc-shaped groove 3243 is two. In other embodiments, the number of sets of the mating structure between the first rotating block 362 and the arc-shaped groove 3243 may also be one or more. (See also...) Figure 4 , Figure 40 as well as Figure 41 In this embodiment, the first support plate 35 is rotatably connected to the first fixed frame 321, the first support plate 35 is slidably connected to the first rotating arm 323, the second support plate 36 is rotatably connected to the second fixed frame 324, and the second support plate 36 is slidably connected to the second rotating arm 326. During the folding or unfolding process of the folding device 10, that is, when the first housing 1 is folded or unfolded relative to the second housing 2, the first fixed frame 321 and the second fixed frame 324 rotate relative to each other, and the first rotating arm 323 and the second rotating arm 326 rotate relative to each other. The first fixed frame 321 and the first rotating arm 323 jointly drive the first support plate 35 to rotate, and the second fixed frame 324 and the second rotating arm 326 jointly drive the second support plate 36 to rotate. Therefore, the first support plate 35 and the second support plate 36 rotate relative to each other to better meet the support and protection of the flexible display screen 20. The bent part 202 of the flexible display screen 20 is folded or unfolded relative to each other under the action of the first support plate 35 and the second support plate 36.

[0259] See also Figure 42 , Figure 42 yes Figure 38 A schematic diagram of the cross-sectional structure after being cut along section KK.

[0260] For example, when the folding assembly 3 is in the open state, the first support block 354 of the first support plate 35 engages with the through hole 3222b of the second end 3222 of the first swing arm, and the first support block 354 of the first support plate 35 abuts against the protrusion 3222c of the second end 3222 of the first swing arm 322. The second support block 364 of the second support plate 36 engages with the through hole 3252b of the second end 3252 of the second swing arm 325, and the second support block 364 of the second support plate 36 abuts against the protrusion 3252c of the second end 3252 of the second swing arm 325. The protrusion 3222c of the first swing arm 322 can abut against the arcuate support surface 3541 of the first support block 354, and the protrusion 3252c of the second swing arm 325 can abut against the arcuate support surface 3641 of the second support block 364. At this time, the first swing arm 322 can support the first support plate 35, and the second swing arm 325 can support the second support plate 36, making the support environment formed by the first support plate 35 and the second support plate 36 more reliable, which is conducive to increasing the service life of the flexible display screen 20.

[0261] In some other embodiments, the positions of the connections between the first support plate 35, the second support plate 36, and the bottom connecting assembly 32 may also be changed. For example, the first support plate 35 may be slidably connected to the first swing arm 322 without being slidably connected to the first rotating arm 323, and the position of the rotatable connection between the first support plate 35 and the first fixed frame 321 may also be located in the middle of the first fixed frame 321. This application does not impose strict limitations on this.

[0262] It should be noted that in the above embodiment, the first swing arm 322 serves as the first transmission member, the second swing arm 325 serves as the second transmission member, and the stop block 327 stops the first housing 1 and the second housing 2 by stopping the first swing arm 322 and the second swing arm 325. Correspondingly, the first end 3221 of the first swing arm 322 has a first stop end face 3221c for cooperating to achieve the stop, and the first end 3251 of the second swing arm 325 has a second stop end face 3251c for cooperating to achieve the stop.

[0263] It is understood that in some other embodiments, the stop block 327 can also stop the first housing 1 and the second housing 2 by stopping other transmission components of the bottom connecting assembly 32. For example, the stop block 327 can stop the first transmission component and the second transmission component. The first transmission component can be the first rotating arm 323 and the second transmission component can be the second rotating arm 326. Examples are given below.

[0264] Please see Figure 43 , Figure 43 This is a schematic diagram of the internal structure of a portion of the electronic device of this application in some other embodiments. The electronic device 100 of this embodiment includes most of the technical features of the electronic device 100 of the preceding embodiments. The main difference is that the structures of the first rotating arm 323 and the second rotating arm 326 of the electronic device 100 in this embodiment are slightly modified, the installation position of the stop block 327 is changed, the structure of the main shaft 31 is adapted, and the stop block 327 limits the movement of the first rotating arm 323 and the second rotating arm 326. Other designs of the electronic device 100 in this embodiment can be referred to in the preceding embodiments and will not be repeated hereafter. Specifically: In some embodiments, the folding assembly 3 may include a main shaft 31, a first rotating arm 323, a second rotating arm 326, and a stop block 327. The main shaft 31 may include a main inner shaft 311, which may include a main support surface 3111. The main support surface 3111 is used to support the bending portion 202 of the aforementioned flexible display screen 20 (e.g., ...). Figure 4 (As shown). The main inner shaft 311 of the main shaft 31 can also be provided with a protrusion 3115, which protrudes away from the main support surface 3111.

[0265] The first rotating arm 323 may include a first end 3231, which has a first stop end face 3231c. The second rotating arm 326 may include a first end 3261, which has a second stop end face 3261c.

[0266] The stop block 327 may include a main body 3271, a first stop portion 3272, and a second stop portion 3273. The first stop portion 3272 is fixed to one side of the main body 3271, and the second stop portion 3273 is fixed to the other side of the main body 3271. The main body 3271 may be provided with a through hole 3271a and a limiting groove 3271b, with the limiting groove 3271b communicating with the through hole 3271a. The stop block 327 may also include a first stop surface 3272a and a second stop surface 3273a. The first stop surface 3272a and the second stop surface 3273a are disposed opposite to each other. Specifically, the first stop surface 3272a may be formed on the end face of the first stop portion 3272 facing away from the main body 3271, and the second stop surface 3273a may be formed on the end face of the second stop portion 3273 facing away from the main body 3271.

[0267] For example, the folding assembly 3 may further include an adjustment assembly 328, which is used to adjust the relative position of the stop block 327 and the main inner shaft 311 of the main shaft 31 in the thickness direction of the folding assembly 3. The adjustment assembly 328 may include a limiting member 3281 and an elastic member 3282. The limiting member 3281 may include a limiting end 2381a and a connecting section. The elastic member 3282 may be an elastic gasket, and the elastic member 3282 may have a through hole 3282a.

[0268] In some embodiments, the first rotating arm 323 and the second rotating arm 326 are mounted on both sides of the main shaft 31, and the stop block 327 is fixed to the main shaft 31. For example, the first rotating arm 323 and the second rotating arm 326 are mounted on both sides of the protrusion 3115 of the main inner shaft 311 of the main shaft 31. The elastic member 3282 is located between the protrusion 3115 and the stop block 327, and the protrusion 3115 is embedded in the through hole 3282a of the elastic member 3282 and the limiting groove 3271b of the stop block 327 to limit the stop block 327 in the extending direction of the main shaft 31. The protrusion 3115 may be provided with a threaded hole. The connecting end 3281b of the limiting member 3281 may be provided with an external thread, for example, the limiting member 3281 may be a screw. The limiting end 2381a of the limiting member 3281 is located on the side of the stop block 327 facing away from the main inner shaft 311. The connecting end 3281b of the limiting member 3281 passes through the through hole 3271a and the limiting groove 3271b of the stop block 327 and is threadedly connected to the main inner shaft 311 through the threaded hole. The elastic member 3282 is in a compressed state, and its two end faces abut against the protrusions 3115 of the stop block 327 and the main inner shaft 311, respectively. Thus, a fixed connection is achieved between the stop block 327 and the main shaft 31.

[0269] In this embodiment, when the first rotating arm 323 and the second rotating arm 326 are unfolded relative to each other, the first stop end face 3231c of the first rotating arm 323 rotates toward the first stop surface 3272a of the stop block 327, and the second stop end face 3261c of the second rotating arm 326 rotates toward the second stop surface 3273a of the stop block 327. When the first rotating arm 323 and the second rotating arm 326 are in the open state, the first stop end face 3231c partially abuts against the first stop surface 3272a of the stop block 327, and the second stop end face 3261c partially abuts against the second stop surface 3273a of the stop block 327, so that the included angle between the first rotating arm 323 and the second rotating arm 326 can be guaranteed to be a preset value, preventing excessive rotation. This ensures that when the entire electronic device 100 is in the open state, the included angle between the first housing 1 and the second housing 2 is a preset value, preventing the entire flexible display screen 20 from over-folding and increasing the service life of the flexible display screen 20. Furthermore, the symmetrical structure of the first stop surface 3272a and the second stop surface 3273a allows for the stopping function of the two rotating arms (323, 326) using only one stop block 327, effectively reducing the number of stop blocks 327 required for the folding assembly 3 and the space occupied by the stop blocks 327 within the folding assembly 3. In addition, this embodiment utilizes only one stop block 327 to achieve the stopping function of the two rotating arms (323, 326), effectively reducing the number of stop blocks 327 required for the folding assembly 3 and the space occupied by the stop blocks 327 within the folding assembly 3.

[0270] In some embodiments, the spindle 31 further includes a center surface 317, a first stop surface 3272a and a second stop surface 3273a that are symmetrical about the center surface 317, and a first rotating arm 323 and a second rotating arm 326 that are symmetrical about the center surface 317. By making the two stop surfaces (3272a, 3273a) and the two rotating arms (323, 326) symmetrical about the same surface, when the first rotating arm 323 and the second rotating arm 326 are in the open state, and the included angle between the first rotating arm 323 and the second rotating arm 326 reaches a preset value, the first stop surface 3272a of the stop block 327 abuts against the first stop end surface 3231c of the first rotating arm 323, and the second stop surface 3273a of the stop block 327 abuts against the second stop end surface 3261c of the second rotating arm 326. Therefore, the entire spindle 31 has high stability, and the entire bottom connecting assembly 32 has high stability. Furthermore, the stop block 327 has a small deformation after being squeezed, which helps to ensure precise control of the angle between the first rotating arm 323 and the second rotating arm 326 when they open relative to each other.

[0271] For example, the angle α between the first stop surface 3272a and the center surface 317 is in the range of 0° to 45°. By controlling the range of the angle α between the first stop surface 3272a and the center surface 317, the magnitude of the resultant force from the first rotating arm 323 and the second rotating arm 326 on the stop block 327 can be effectively reduced, the interaction force between the stop block 327 and the fixed structure (i.e., the limiting member 3281) between the stop block 327 and the main shaft 31 can be reduced, and the interaction force between the fixed structure and the main shaft 31 can be reduced, which is beneficial to increasing the structural safety of the fixed structure and the safety of the folding assembly 3.

[0272] In some embodiments, when the angle α between the first stop surface 3272a and the center surface 317 is greater than 0°, the angle between the first rotating arm 323 and the second rotating arm 326 in the open state can be controlled by adjusting the relative position of the stop block 327 and the main shaft 31 in the thickness direction of the folding assembly 3. Specifically, if the angle between the first rotating arm 323 and the second rotating arm 326 exceeds a preset value, that is, the angle between the first rotating arm 323 and the second rotating arm 326 in the open state is too large, the limiting member 3281 can be rotated so that the limiting end 2381a of the limiting member 3281 approaches the main shaft 31. Then, the stop block 327 will squeeze the elastic member 3282 under the pressure of the limiting end 2381a. The elastic member 3282 is compressed, and the stop block 327 moves closer to the main shaft 31 along with the limiting end 2381a. The first stop surface 3272a of the stop block 327 presses against the first stop end surface 3231c of the first rotating arm 323, causing the first rotating arm 323 to rotate counterclockwise under the pressure. The second stop surface 3273a of the stop block 327 presses against the second stop end surface 3261c of the second rotating arm 326, causing the second rotating arm 326 to rotate clockwise under the pressure. This reduces the angle between the first rotating arm 323 and the second rotating arm 326 to a preset value. Therefore, it effectively prevents the flexible display screen 20 from over-folding due to an excessively large angle between the first rotating arm 323 and the second rotating arm 326, thus increasing the service life of the flexible display screen 20. If the angle between the first rotating arm 323 and the second rotating arm 326 is less than a preset value, that is, when the open state the angle between the first rotating arm 323 and the second rotating arm 326 is too small, the limiting member 3281 can be rotated in the opposite direction to make the limiting end 2381a of the limiting member 3281 move away from the main shaft 31, and then the stop block 327 will move away from the main shaft 31 along with the limiting end 2381a under the elastic force of the elastic member 3282. The first stop surface 3272a of the stop block 327 is away from the first stop end surface 3231c of the first rotating arm 323, and a gap is formed between the first stop surface 3272a of the stop block 327 and the first stop end surface 3231c of the first rotating arm 323, so the first rotating arm 323 continues to rotate clockwise; the second stop surface 3273a of the stop block 327 is away from the second stop end surface 3261c of the second rotating arm 326, and a gap is formed between the second stop surface 3273a of the stop block 327 and the second stop end surface 3261c of the second rotating arm 326, so the second rotating arm 326 continues to rotate counterclockwise, and the included angle between the first rotating arm 323 and the second rotating arm 326 can be increased to a preset value. By increasing the relative distance between the stop block 327 and the first rotating arm 323 in the thickness direction of the folding device 10, the squeezing phenomenon of the flexible display screen 20 caused by the excessively small included angle between the first rotating arm 323 and the second rotating arm 326 is effectively prevented, thereby increasing the service life of the flexible display screen 20.

[0273] It is understandable that the adjusting component 328 may not have the elastic element 3282. The adjusting component 328, through the limiting end 2381a of the limiting element 3281 and the main inner shaft 311, can jointly limit the movement space of the stop block 327 in the thickness direction of the folding component 3. In this case, the relative position of the stop block 327 and the main shaft 31 can still be adjusted by adjusting the relative position between the limiting element 3281 and the main shaft 31, thereby adjusting the angle between the first rotating arm 323 and the second rotating arm 326 in the open state.

[0274] In some other embodiments, the folding assembly 3 may not have an adjusting assembly 328, and the stop block 327 and the main inner shaft 311 may be fixedly connected only by fasteners. In this case, the stop block 327 and the main inner shaft 311 are relatively fixed, and the first stop surface 3272a of the stop block 327 can still stop the first rotating arm 323, and the second stop surface 3273a of the stop block 327 can still stop the second rotating arm 326.

[0275] It is understood that the preceding embodiments all use a mobile phone as an example for illustration. When the electronic device 100 is a foldable electronic product such as a tablet computer, laptop computer, or wearable device, the angle between the first housing 1 and the second housing 2 when the folding device 10 is in the open state can also be 120°, 150°, or other angles. That is, through the stopping action of the stop block 327, when the first stop end face (3221c, 3231c) of the first transmission member abuts against the first stop surface 3272a and the second stop end face (3251c, 3261c) of the second transmission member abuts against the second stop surface 3273a, the angle between the first housing 1 and the second housing 2 is 120°, 150°, or other angles to prevent the flexible display screen 20 from over-folding. In addition, the relative positions of the first stop surface 3272a and the first stop end surface (3221c, 3231c), and the relative positions of the second stop surface 3273a and the second stop end surface (3251c, 3261c) can be adjusted by setting the adjustment component 328, thereby eliminating part accuracy and part assembly errors.

[0276] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A folding component (3) applied to an electronic device (100), characterized in that, The folding component (3) is used to support the bend (202) of the screen of the electronic device (100), and the folding component (3) has an open state and a closed state; The folding assembly (3) includes a main shaft (31), a first fixing frame (321), a first swing arm (322), a second fixing frame (324), a second swing arm (325), a locking component (329), and a damping assembly (330). The first end (3221) of the first swing arm (322) is rotatably connected to the main shaft (31), and the second end (3222) of the first swing arm (322) is slidably connected to the first fixed frame (321). The first end (3251) of the second swing arm (325) is rotatably connected to the main shaft (31), and the second end (3252) of the second swing arm (325) is slidably connected to the second fixed frame (324). The locking component (329) includes a fixing part (3291), a first locking part (3292), and a second locking part (3293). The first locking part (3292) and the second locking part (3293) are respectively fixed to both sides of the fixing part (3291). The fixing part (3291) is fixedly connected to the main shaft (31). The first end (3221) of the first swing arm (322) is provided with a first limiting groove (3221h), and the first locking part (3292) is engaged in the first limiting groove (3221h). The first end (3251) of the second swing arm (325) is provided with a second limiting groove (3251h), and the second locking part (3293) is engaged in the second limiting groove (3251h). The damping assembly (330) is mounted on the main shaft (31). The damping assembly (330) connects the first end (3221) of the first swing arm (322) and the first end (3251) of the second swing arm (325). The damping assembly (330) is used to provide resistance during the relative rotation of the first swing arm (322) and the second swing arm (325).

2. The folding assembly (3) according to claim 1, characterized in that, The folding assembly (3) also includes a plurality of synchronizing gears (340), and the first end (3221) of the first swing arm (322) meshes with the first end (3251) of the second swing arm (325) through the plurality of synchronizing gears (340).

3. The folding assembly (3) according to claim 2, characterized in that, The damping assembly (330) includes a first locking block (3301), a second locking block (3302), and an elastic component (3305). The first locking block (3301) is provided with a plurality of first protrusion groups (3301b), and the second locking block (3302) is provided with a plurality of second protrusion groups (3302b). The plurality of first protrusion groups (3301b) and the plurality of second protrusion groups (3302b) are arranged opposite each other in a one-to-one correspondence. The first end (3221) of the first swing arm (322) includes a plurality of first protrusions (3221e) and a plurality of second protrusions (3221f) arranged opposite to each other, and the first end (3251) of the second swing arm (325) includes a plurality of first protrusions (3251e) and a plurality of second protrusions (3251f) arranged opposite to each other. The first end (3221) of the first swing arm (322) and the first end (3251) of the second swing arm (325) are both located between the first locking block (3301) and the second locking block (3302); The elastic member (3305) is located on the side of the second locking block (3302) facing away from the first locking block (3301). The elastic member (3305) is used to generate an elastic force so that the first end (3221) of the first swing arm (322) and the first end (3251) of the second swing arm (325) both abut against the first locking block (3301) and the second locking block (3302), and the plurality of first protrusions (3221e) of the first swing arm (322) and one of the elastic members (3305) are located on the side of the second locking block (3302) facing away from the first locking block (3301). The first protrusion group (3301b) cooperates to form a snap-fit ​​structure. The plurality of second protrusions (3221f) of the first swing arm (322) cooperate with one of the second protrusion groups (3302b) to form a snap-fit ​​structure. The plurality of first protrusions (3251e) of the second swing arm (325) cooperate with another first protrusion group (3301b) to form a snap-fit ​​structure. The plurality of second protrusions (3251f) of the second swing arm (325) cooperate with another second protrusion group (3302b) to form a snap-fit ​​structure.

4. The folding assembly (3) according to claim 3, characterized in that, The damping assembly (330) also includes a first rotating shaft (3306) and a second rotating shaft (3307). The first locking part (3292) is provided with a first through hole (3292a), and the second locking part (3293) is provided with a second through hole (3293a). The first rotating shaft (3306) passes through the first locking block (3301), the first end (3221) of the first swing arm (322), the first through hole (3292a), the second locking block (3302) and the elastic component (3305). The second pivot (3307) passes through the first locking block (3301), the first end (3251) of the second swing arm (325), the second through hole (3293a), the second locking block (3302) and the elastic component (3305).

5. The folding assembly (3) according to claim 1, characterized in that, The plurality of synchronous gears (340) are provided with a plurality of third protrusions (3403), which are arranged toward the second locking block (3302).

6. The folding assembly (3) according to claim 3, wherein the locking member (329) further includes a third locking part (3294), the third locking part (3294) being fixed between the first locking part (3292) and the second locking part (3293), and the third locking part (3294) being fixed to the fixing part (3291).

7. The folding assembly (3) according to claim 4, characterized in that, The damping assembly (330) also includes a fixing plate (3303) and a limiting block (3304). The fixing plate (3303) is located on the side of the second locking block (3302) facing away from the first locking block (3301), the limiting block (3304) is located between the second locking block (3302) and the fixing plate (3303), and the elastic member (3305) is located between the limiting block (3304) and the second locking block (3302); The first rotating shaft (3306) also passes through the limiting block (3304) and the fixing plate (3303), and the second rotating shaft (3307) also passes through the limiting block (3304) and the fixing plate (3303).

8. The folding assembly (3) according to claim 3, characterized in that, The end faces of the plurality of synchronous gears (340) facing away from the second locking block (3302) abut against the end face of the third locking part (3294) near the second locking block 3302.

9. The folding assembly (3) according to claim 8, characterized in that, The end face of the first locking part (3292) near the second locking block (3302) abuts against the wall surface of the first limiting groove (3221h) near the second locking block (3302); the end face of the second locking part (3293) near the second locking block (3302) abuts against the wall surface of the second limiting groove (3251h) near the second locking block (3302); or The end face of the first locking part (3292) near the first locking block (3301) abuts against the wall face of the first limiting groove (3221h) near the first locking block (3301); the end face of the second locking part (3293) near the first locking block (3301) abuts against the wall face of the second limiting groove (3251h) near the first locking block (3301).

10. The folding assembly (3) according to claim 6, characterized in that, The plurality of synchronizing gears (340) include a first synchronizing gear and a second synchronizing gear. The damping assembly (330) also includes a third rotating shaft (3308) and a fourth rotating shaft (3008). The third rotating shaft (3308) passes through the third locking part (3294) and the first synchronizing gear, and the fourth rotating shaft (3008) passes through the third locking part (3294) and the second synchronizing gear.

11. An electronic device (100), characterized in that, The electronic device (100) includes a first housing (1), a second housing (2), a flexible display screen (20), and a folding assembly (3) as described in any one of claims 1-10; The folding assembly (3) connects the first housing (1) and the second housing (2). Through the movement of the folding assembly (3), the first housing (1) and the second housing (2) can be unfolded to an open state or folded to a closed state. The flexible display screen (20) includes a first non-bending part (201), a bending part (202) and a second non-bending part (203) arranged in sequence. The first non-bending part (201) is fixed to the first housing (1) and the second non-bending part (203) is fixed to the second housing (2). During the process of the first housing (1) and the second housing (2) unfolding or folding relative to each other, the bending part (202) deforms.

Images