Electronic device, folding assembly and folding device

Abstract

The present application discloses an electronic device, a folding assembly and a folding device. The electronic device includes a folding device and a flexible display screen. The folding device includes a first shell, a folding assembly and a second shell connected in sequence. The folding assembly includes a central axis, a first fixed frame, a first rotating arm, a first elastic member, a second fixed frame, a second rotating arm and a second elastic member. The second end of the first rotating arm is an arc-shaped arm and is installed in the first arc-shaped groove of the first fixed frame. The two ends of the first elastic member contact the second end of the first rotating arm and the first fixed frame respectively. The second end of the second rotating arm is an arc-shaped arm and is installed in the second arc-shaped groove of the second fixed frame. The two ends of the second elastic member contact the second end of the second rotating arm and the second fixed frame respectively. When the folding assembly is in an open state, the first elastic member and the second elastic member are in a compressed state to prop up the bending portion of the flexible display screen, so that the flatness of the bending portion of the flexible display screen is better and the service life is longer.

Description

Technical Field

[0001] The present application relates to the technical field of foldable electronic products, and in particular to an electronic device, a folding component and a folding device. Background Art

[0002] In recent years, flexible display screens have been widely used in various foldable electronic devices due to their thinness, lightness and unbreakability. Among them, the foldable electronic device also includes a folding device for carrying the flexible display screen, which can be unfolded to an open state or folded to a closed state, and the flexible display screen unfolds or folds with the folding device. However, the bending part of the flexible display screen is easily arched and damaged when the electronic device is in the open state, resulting in a shortened service life of the flexible display screen. Summary of the invention

[0003] The purpose of the present application is to provide an electronic device, a folding assembly and a folding device. The electronic device includes a folding device and a flexible display screen, the folding device includes a first shell, a second shell and a folding assembly connecting the first shell and the second shell, the bending portion of the flexible display screen is arranged corresponding to the folding assembly, when the folding device is in an open state, the bending portion of the flexible display screen has a better flatness, the flexible display screen is not easy to be damaged, has a higher reliability and a longer service life.

[0004] In a first aspect, the present application provides an electronic device, including a folding device and a flexible display screen. The folding device includes a first shell, a second shell and a folding assembly, the folding assembly connects the first shell and the second shell, and through the movement of the folding assembly, the first shell and the second shell can be relatively unfolded to an open state or relatively folded to a closed state.

[0005] 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 the first shell, and the second non-bending portion is fixed to the second shell. When the first shell and the second shell are relatively unfolded or folded, the bending portion is deformed.

[0006] In the present application, the flexible display screen can be unfolded or folded with the folding device. When the electronic device is in the open state, the flexible display screen is in a flattened state and can display in full screen, so that the electronic device has a larger display area to improve the user's viewing experience. When the electronic device is in the closed state, the plane size of the electronic device is small, which is convenient for the user to carry and store.

[0007] The folding assembly includes a central axis, a first fixed frame, a first rotating arm, a first elastic member, a second fixed frame, a second rotating arm and a second elastic member. The first fixed frame is fixedly connected to the first shell, and the second fixed frame is fixedly connected to the second shell. The first rotating arm includes a first end and a second end, and the first end of the first rotating arm is rotatably connected to the central axis. The first fixed frame includes a first arc-shaped groove, and the second end of the first rotating arm is an arc-shaped arm and is installed in the first arc-shaped groove to be rotatably connected to the first fixed frame. The first elastic member is installed on the first fixed frame, and the end of the first elastic member close to the central axis contacts the second end of the first rotating arm, and the end of the first elastic member away from the central axis contacts the first fixed frame. The second rotating arm includes a first end and a second end, and the first end of the second rotating arm is rotatably connected to the central axis. The second fixed frame includes a second arc-shaped groove, and the second end of the second rotating arm is an arc-shaped arm and is installed in the second arc-shaped groove to be rotatably connected to the second fixed frame. The second elastic member is installed on the second fixed frame, and the end of the second elastic member close to the central axis contacts the second end of the second rotating arm, and the end of the second elastic member away from the central axis contacts the second fixed frame. When the first shell and the second shell are in the open state, the first elastic member and the second elastic member are in a compressed state.

[0008] In the present application, the first shell and the second shell can be relatively unfolded to an open state or relatively folded to a closed state, corresponding to the electronic device having an open state and a closed state, and the folding device and the folding assembly also have corresponding open state and closed state. Among them, the first fixing frame of the folding assembly is rotatably connected to the central axis through the first rotating arm, and the second fixing frame is rotatably connected to the central axis through the second rotating arm. The first fixing frame and the second fixing frame can rotate relative to the central axis to be relatively unfolded to an open state or relatively folded to a closed state.

[0009] In the folding assembly, the first rotating arm and the first fixed frame are rotatably connected via a virtual axis structure, and a certain gap is designed between the second end of the first rotating arm and the first fixed frame to achieve smooth rotational movement. When the first shell and the second shell are in the open state, the first elastic member is in a compressed state, and the two ends of the first elastic member contact the first fixed frame and the second end of the first rotating arm respectively. The elastic force generated by the first elastic member causes the first fixed frame and the first rotating arm to be stretched away from each other to absorb the gap between the first fixed frame and the first rotating arm, so that the first fixed frame and the first rotating arm can move into place in the open state.

[0010] The second rotating arm and the second fixed frame are rotatably connected via a virtual axis structure, and a certain gap is designed between the second end of the second rotating arm and the second fixed frame to achieve smooth rotational movement. When the first shell and the second shell are in an open state, the second elastic member is also in a compressed state, and the two ends of the second elastic member contact the second fixed frame and the second end of the second rotating arm respectively. The elastic force generated by the second elastic member causes the second fixed frame and the second rotating arm to be stretched away from each other to absorb the gap between the second fixed frame and the second rotating arm, so that the second fixed frame and the second rotating arm can move into place in the open state.

[0011] In the present application, since the gap between the first fixed frame and the first rotating arm is absorbed, and the gap between the second fixed frame and the second rotating arm is absorbed, the first fixed frame and the second fixed frame are unfolded into place in the direction away from the central axis. Therefore, the folding assembly can better flatten the bent part of the flexible display screen, avoid the problem of the flexible display screen arching in the middle due to long-term bending, so as to improve the flatness and reliability of the flexible display screen.

[0012] In the present application, the first rotating arm is rotatably connected to the first fixed frame via a virtual axis structure, which is beneficial to reducing the thickness of the first fixed frame. The second rotating arm is rotatably connected to the second fixed frame via a virtual axis structure, which is beneficial to reducing the thickness of the second fixed frame. This makes the folding component have lower requirements for installation space, reduces the difficulty of assembling the folding component with the first shell and the second shell, and is beneficial to reducing the overall thickness of the folding device and the electronic device.

[0013] The two components are rotationally connected through a virtual axis structure, which means that the two components do not rotate relative to each other through a physical rotating shaft, but achieve relative rotation around the rotation center through the structure of the arc-shaped arm and the arc-shaped groove.

[0014] In a possible implementation manner, when the first shell and the second shell are in a closed state, the first elastic member and the second elastic member are in a compressed state.

[0015] In this implementation, when the first shell and the second shell are in a closed state, the first elastic member and the second elastic member are in a compressed state, and the elastic force generated by the first elastic member and the second elastic member can also achieve the purpose of absorbing the movement gap, so that the flexible display screen is stretched open by the folding device, and is not prone to wrinkles or arches, so as to have higher reliability.

[0016] In the process of movement of the folding assembly, the states of the first elastic member and the second elastic member may change, for example, between a compressed state and a natural state, or the degree of compression may change, and this application does not strictly limit this. The degree of compression of the first elastic member and the second elastic member in the open state and the closed state may be the same or different, and this application does not strictly limit this. For example, in some other implementations, when the first shell and the second shell are in the closed state, the first elastic member and the second elastic member may also be in the natural state.

[0017] In a possible implementation, the first elastic member includes a first elastic body and a first bracket, the first bracket is made of hard material, the first bracket abuts the first rotating arm, and two ends of the first elastic body respectively abut the first bracket and the first fixing bracket.

[0018] In this implementation, the first elastic body is used to provide elastic force for the first elastic member, and the connection structure between the first bracket and the first rotating arm is stable and accurate, so that the first elastic member can not only provide elastic force, but also accurately cooperate with the first rotating arm, which is beneficial to ensure the movement reliability of the folding assembly.

[0019] In a possible implementation, the first bracket includes a first base plate and a first matching block protruding from one side of the first base plate. The first elastic body is located on the side of the first base plate facing away from the first matching block. The first matching block includes a top surface, a transition surface and a connecting surface connected in sequence, the top surface faces away from the first base plate and is spaced apart from the first base plate, the transition surface is an arc surface or a free-form surface, the connecting surface bends and extends toward the direction close to the first base plate, and the connecting surface is an arc surface or a free-form surface. When the first shell and the second shell are in an open state, the second end of the first rotating arm contacts the top surface or the transition surface; when the first shell and the second shell are in a closed state, the second end of the first rotating arm contacts the connecting surface.

[0020] In this implementation, by designing the structure of the first matching block and the matching structure of the first rotating arm and the first matching block in the open state and the closed state, the first elastic body is in a compressed state in the open state to provide elastic force. In some implementations, similarly, the first elastic body can also be in a compressed state in the closed state by the structure of the first matching block and the matching structure with the first rotating arm.

[0021] In a possible implementation, the first fixing frame further includes a first receiving groove and a first connecting port, wherein the first connecting port connects the first receiving groove and the first arc-shaped groove. The first bottom plate and the first elastic body are located in the first receiving groove, the first elastic member contacts the groove wall of the first receiving groove, and the first matching block is located in the first connecting port. The second end of the first rotating arm includes a first abutting block, which is at least partially located in the first connecting port and abuts against the first matching block.

[0022] In this implementation, the first rotating arm is installed in the first arc-shaped groove, the first base plate and the first elastic body are installed in the first accommodating groove, the first matching block and the first supporting block at the second end of the first rotating arm are matched at the first connecting port, and the first rotating arm, the first elastic member and the first fixing frame are arranged compactly to make full use of the space of the first fixing frame and provide space utilization.

[0023] The wall surface of the first communication port can also be used to limit the first holding block to prevent the first rotating arm from being separated from the first fixing frame.

[0024] The first fixing frame may include a main body and a matching block, and the matching block is installed on the main body to make the slot structure of the first fixing frame easier to implement. For example, the first arc groove and the first communication port can be formed by the matching of the main body and the matching block.

[0025] In a possible implementation, the central axis includes a third arc groove and a fourth arc groove, and the third arc groove and the fourth arc groove extend to both sides of the central axis respectively. The first end of the first rotating arm is an arc arm and is installed in the third arc groove, and the first end of the second rotating arm is an arc arm and is installed in the fourth arc groove.

[0026] In this implementation, the first rotating arm and the central axis are rotationally connected via a virtual axis structure, and the second rotating arm and the central axis are rotationally connected via a virtual axis structure, which is beneficial to reducing the difficulty of designing the rotational connection structure between the rotating arm and the central axis, and can reduce the overall thickness of the folding assembly, which is beneficial to making the folding assembly thinner and lighter.

[0027] In a possible implementation, the folding assembly further includes a first transmission arm and a second transmission arm. The first transmission arm includes a rotating end and a sliding end, the rotating end of the first transmission arm is rotatably connected to the central axis, and the sliding end of the first transmission arm is slidably connected to the first fixed frame. The second transmission arm includes a rotating end and a sliding end, the rotating end of the second transmission arm is rotatably connected to the central axis, and the sliding end of the second transmission arm is slidably connected to the second fixed frame.

[0028] In this implementation, the first transmission arm is rotatably connected to the middle axis and slidably connected to the first fixed frame to form a connecting rod slider structure, the first rotating arm is rotatably connected to the middle axis and slidably connected to the first fixed frame to form a connecting rod structure; the second transmission arm is rotatably connected to the middle axis and slidably connected to the second fixed frame to form a connecting rod slider structure, the second rotating arm is rotatably connected to the middle axis and slidably connected to the second fixed frame to form a connecting rod structure. The folding assembly realizes the connection between the fixed frame and the middle axis through the connecting rod slider structure and the connecting rod structure. The number of its components is small, the matching relationship and matching position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. In addition, since the middle axis is linked to the first fixed frame through the first transmission arm and the first rotating arm, and is linked to the second fixed frame through the second transmission arm and the second rotating arm, the folding assembly has better mechanism tensile resistance and mechanism anti-extrusion ability.

[0029] In addition, the folding assembly can realize the inward pulling movement of the fixed frame during the change from the open state to the closed state, and the outward pushing movement of the fixed frame during the change from the closed state to the open state, so the length dimension of the folding assembly can be kept consistent or relatively close during the movement, so as to better support the bending part of the flexible display screen, reduce the risk of pulling or squeezing the flexible display screen, and improve the reliability and service life of the flexible display screen and the electronic device. Among them, the length dimension of the folding assembly refers to the dimension extending from the end of the first fixed frame facing away from the central axis, through the central axis, to the end of the second fixed frame facing away from the central axis. This dimension is a dynamic dimension and changes with the movement of the folding assembly.

[0030] At the same time, since the first rotating arm and the first fixed frame are stretched apart by the first elastic member, and the second rotating arm and the second fixed frame are stretched apart by the second elastic member, the first elastic member and the second elastic member can be deformed under the action of external force. Therefore, during the movement of the folding assembly, the movement gap between the first rotating arm and the first fixed frame and the movement gap between the second rotating arm and the second fixed frame can make the relative movement between the first fixed frame and the second fixed frame smoother, and the elastic force of the first elastic member and the second elastic member enables the first fixed frame and the second fixed frame to maintain an stretched state, so as to better support the bending portion of the flexible display screen, so as to ensure the reliability of the flexible display screen.

[0031] In a possible implementation, the folding assembly further includes a first damping member, which is mounted on the sliding end of the first transmission arm. The first fixed frame further includes a first slide groove and a first recessed area and a second recessed area connected to the first slide groove, the first recessed area is located on the side of the second recessed area close to the central axis, and the first fixed frame further includes a first top block located between the first recessed area and the second recessed area. The sliding end of the first transmission arm is mounted on the first slide groove, and when the first shell and the second shell are in an open state, the first damping member is partially inserted into the first recessed area, and when the first shell and the second shell are in a closed state, the first damping member passes over the first top block and is partially inserted into the second recessed area.

[0032] The folding assembly further includes a second damping member, which is mounted on the sliding end of the second transmission arm. The second fixed frame further includes a second slide groove and a third recessed area and a fourth recessed area connected to the second slide groove, wherein the third recessed area is located on the side of the fourth recessed area close to the central axis, and the second fixed frame further includes a second top block located between the third recessed area and the fourth recessed area. The sliding end of the second transmission arm is mounted on the second slide groove, and when the first shell and the second shell are in an open state, the second damping member is partially inserted into the third recessed area, and when the first shell and the second shell are in a closed state, the second damping member passes over the second top block and is partially inserted into the fourth recessed area.

[0033] In this implementation, since the folding assembly is provided with a first damping member and a second damping member, the first damping member is used to provide a damping force during the relative sliding of the first transmission arm and the first fixed frame, the first fixed frame is used to connect the first shell of the folding device, and the second damping member is used to provide a damping force during the relative sliding of the second transmission arm and the second fixed frame, and the second fixed frame is used to connect the second shell of the folding device. In the process of the first fixed frame driving the first shell to rotate relative to the central axis and the second fixed frame driving the second shell to rotate relative to the central axis, the first damping member and the second damping member provide a certain damping force, so that the user can experience a better sense of mechanism operation.

[0034] In a possible implementation, the folding assembly further includes a plurality of synchronous gears, and the plurality of synchronous gears mesh with the rotating end of the first transmission arm and the rotating end of the second transmission arm.

[0035] In this implementation, multiple synchronous gears are used to synchronize the rotation angles of the first transmission arm and the second transmission arm relative to the central axis during the movement of the folding component, thereby synchronizing the rotation angles of the first fixed frame and the second fixed frame. The first fixed frame drives the first shell to rotate, and the second fixed frame drives the second shell to rotate. Therefore, multiple synchronous gears can synchronize the first shell and the second shell during the movement of the folding device to improve the user experience.

[0036] In a second aspect, the present application provides a folding assembly, which can be applied to a folding device of a foldable electronic device. The electronic device includes a foldable flexible display screen, the folding device is used to carry the flexible display screen, and the bending portion of the flexible display screen is arranged corresponding to the folding assembly.

[0037] The folding assembly includes a central axis, a first fixed frame, a first rotating arm, a first elastic member, a second fixed frame, a second rotating arm and a second elastic member. The first rotating arm includes a first end and a second end, the first end of the first rotating arm is rotatably connected to the central axis, the first fixed frame includes a first arc-shaped groove, the second end of the first rotating arm is an arc-shaped arm and is installed in the first arc-shaped groove to be rotatably connected to the first fixed frame. The first elastic member is installed on the first fixed frame, the end of the first elastic member close to the central axis contacts the second end of the first rotating arm, and the end of the first elastic member away from the central axis contacts the first fixed frame. The second rotating arm includes a first end and a second end, the first end of the second rotating arm is rotatably connected to the central axis, the second fixed frame includes a second arc-shaped groove, the second end of the second rotating arm is an arc-shaped arm and is installed in the second arc-shaped groove to be rotatably connected to the second fixed frame. The second elastic member is installed on the second fixed frame, the end of the second elastic member close to the central axis contacts the second end of the second rotating arm, and the end of the second elastic member away from the central axis contacts the second fixed frame. When the folding assembly is in an open state, the first fixed frame and the second fixed frame are respectively located on both sides of the central axis, and the first elastic member and the second elastic member are in a compressed state.

[0038] In the present application, the first fixed frame is rotatably connected to the central axis via a first rotating arm, and the second fixed frame is rotatably connected to the central axis via a second rotating arm. The first fixed frame and the second fixed frame can rotate relative to the central axis to relatively unfold to an open state or relatively fold to a closed state.

[0039] The first rotating arm and the first fixed frame are rotatably connected via a virtual axis structure, and a certain gap is designed between the second end of the first rotating arm and the first fixed frame to achieve smooth rotational movement. When the folding assembly is in an open state, the first elastic member is in a compressed state, and the two ends of the first elastic member contact the first fixed frame and the second end of the first rotating arm respectively. The elastic force generated by the first elastic member causes the first fixed frame and the first rotating arm to be stretched away from each other to absorb the gap between the first fixed frame and the first rotating arm, so that the first fixed frame and the first rotating arm can move into place in the open state.

[0040] The second rotating arm and the second fixed frame are rotatably connected via a virtual axis structure, and a certain gap is designed between the second end of the second rotating arm and the second fixed frame to achieve smooth rotational movement. When the folding assembly is in the open state, the second elastic member is also in a compressed state, and the two ends of the second elastic member contact the second fixed frame and the second end of the second rotating arm respectively. The elastic force generated by the second elastic member causes the second fixed frame and the second rotating arm to be stretched away from each other to absorb the gap between the second fixed frame and the second rotating arm, so that the second fixed frame and the second rotating arm can move into place in the open state.

[0041] In the present application, since the gap between the first fixed frame and the first rotating arm is absorbed, and the gap between the second fixed frame and the second rotating arm is absorbed, the first fixed frame and the second fixed frame are unfolded into place in the direction away from the central axis. Therefore, the folding assembly can better flatten the bent part of the flexible display screen, avoid the problem of the flexible display screen arching in the middle due to long-term bending, so as to improve the flatness and reliability of the flexible display screen.

[0042] In the present application, the first rotating arm is rotatably connected to the first fixed frame via a virtual axis structure, which is beneficial to reducing the thickness of the first fixed frame. The second rotating arm is rotatably connected to the second fixed frame via a virtual axis structure, which is beneficial to reducing the thickness of the second fixed frame. This makes the folding component have lower requirements for installation space, reduces the difficulty of assembling the folding component with the first shell and the second shell, and is beneficial to reducing the overall thickness of the folding device and the electronic device.

[0043] The two components are rotationally connected through a virtual axis structure, which means that the two components do not rotate relative to each other through a physical rotating shaft, but achieve relative rotation around the rotation center through the structure of the arc-shaped arm and the arc-shaped groove.

[0044] In a possible implementation, when the folding assembly is in a closed state, the first fixing frame and the second fixing frame are located on the same side of the central axis and are arranged opposite to each other, and the first elastic member and the second elastic member are in a compressed state.

[0045] In this implementation, when the folding assembly is in a closed state, the first elastic member and the second elastic member are in a compressed state, and the elastic force generated by the first elastic member and the second elastic member can also achieve the purpose of absorbing the movement gap, so that the flexible display screen is stretched open by the folding device, and is not prone to wrinkles or arches, so as to have higher reliability.

[0046] In the process of movement of the folding assembly, the states of the first elastic member and the second elastic member may change, for example, between a compressed state and a natural state, or the degree of compression may change, and this application does not strictly limit this. The degree of compression of the first elastic member and the second elastic member in the open state and the closed state may be the same or different, and this application does not strictly limit this. For example, in some other implementations, when the folding assembly is in the closed state, the first elastic member and the second elastic member may also be in the natural state.

[0047] In a possible implementation, the first elastic member includes a first elastic body and a first bracket, the first bracket is made of hard material, the first bracket abuts the first rotating arm, and two ends of the first elastic body respectively abut the first bracket and the first fixing bracket.

[0048] In this implementation, the first elastic body is used to provide elastic force for the first elastic member, and the connection structure between the first bracket and the first rotating arm is stable and accurate, so that the first elastic member can not only provide elastic force, but also accurately cooperate with the first rotating arm, which is beneficial to ensure the movement reliability of the folding assembly.

[0049] In a possible implementation, the first bracket includes a first base plate and a first matching block protruding from one side of the first base plate. The first elastic body is located on the side of the first base plate facing away from the first matching block. The first matching block includes a top surface, a transition surface and a connecting surface connected in sequence, the top surface faces away from the first base plate and is spaced apart from the first base plate, the transition surface is an arc surface or a free-form surface, the connecting surface bends and extends toward the direction close to the first base plate, and the connecting surface is an arc surface or a free-form surface. When the folding assembly is in an open state, the second end of the first rotating arm contacts the top surface or the transition surface; when the folding assembly is in a closed state, the second end of the first rotating arm contacts the connecting surface.

[0050] In this implementation, by designing the structure of the first matching block and the matching structure of the first rotating arm and the first matching block in the open state and the closed state, the first elastic body is in a compressed state in the open state to provide elastic force. In some implementations, similarly, the first elastic body can also be in a compressed state in the closed state by the structure of the first matching block and the matching structure with the first rotating arm.

[0051] In a possible implementation, the first fixing frame further includes a first receiving groove and a first connecting port, wherein the first connecting port connects the first receiving groove and the first arc-shaped groove. The first bottom plate and the first elastic body are located in the first receiving groove, the first elastic member contacts the groove wall of the first receiving groove, and the first matching block is located in the first connecting port. The second end of the first rotating arm includes a first abutting block, which is at least partially located in the first connecting port and abuts against the first matching block.

[0052] In this implementation, the first rotating arm is installed in the first arc-shaped groove, the first base plate and the first elastic body are installed in the first accommodating groove, the first matching block and the first supporting block at the second end of the first rotating arm are matched at the first connecting port, and the first rotating arm, the first elastic member and the first fixing frame are arranged compactly to make full use of the space of the first fixing frame and provide space utilization.

[0053] The wall surface of the first communication port can also be used to limit the first holding block to prevent the first rotating arm from being separated from the first fixing frame.

[0054] The first fixing frame may include a main body and a matching block, and the matching block is installed on the main body to make the slot structure of the first fixing frame easier to implement. For example, the first arc groove and the first communication port can be formed by the matching of the main body and the matching block.

[0055] In a possible implementation, the central axis includes a third arc groove and a fourth arc groove, and the third arc groove and the fourth arc groove extend to both sides of the central axis respectively. The first end of the first rotating arm is an arc arm and is installed in the third arc groove, and the first end of the second rotating arm is an arc arm and is installed in the fourth arc groove.

[0056] In this implementation, the first rotating arm and the central axis are rotationally connected via a virtual axis structure, and the second rotating arm and the central axis are rotationally connected via a virtual axis structure, which is beneficial to reducing the difficulty of designing the rotational connection structure between the rotating arm and the central axis, and can reduce the overall thickness of the folding assembly, which is beneficial to making the folding assembly thinner and lighter.

[0057] In a possible implementation, the folding assembly further includes a first transmission arm and a second transmission arm. The first transmission arm includes a rotating end and a sliding end, the rotating end of the first transmission arm is rotatably connected to the central axis, and the sliding end of the first transmission arm is slidably connected to the first fixed frame. The second transmission arm includes a rotating end and a sliding end, the rotating end of the second transmission arm is rotatably connected to the central axis, and the sliding end of the second transmission arm is slidably connected to the second fixed frame.

[0058] In this implementation, the first transmission arm is rotatably connected to the middle axis and slidably connected to the first fixed frame to form a connecting rod slider structure, the first rotating arm is rotatably connected to the middle axis and slidably connected to the first fixed frame to form a connecting rod structure; the second transmission arm is rotatably connected to the middle axis and slidably connected to the second fixed frame to form a connecting rod slider structure, the second rotating arm is rotatably connected to the middle axis and slidably connected to the second fixed frame to form a connecting rod structure. The folding assembly realizes the connection between the fixed frame and the middle axis through the connecting rod slider structure and the connecting rod structure. The number of its components is small, the matching relationship and matching position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. In addition, since the middle axis is linked to the first fixed frame through the first transmission arm and the first rotating arm, and is linked to the second fixed frame through the second transmission arm and the second rotating arm, the folding assembly has better mechanism tensile resistance and mechanism anti-extrusion ability.

[0059] In addition, the folding assembly can realize the inward pulling movement of the fixed frame during the change from the open state to the closed state, and the outward pushing movement of the fixed frame during the change from the closed state to the open state, so the length dimension of the folding assembly can be kept consistent or relatively close during the movement, so as to better support the bending part of the flexible display screen, reduce the risk of pulling or squeezing the flexible display screen, and improve the reliability and service life of the flexible display screen and the electronic device. Among them, the length dimension of the folding assembly refers to the dimension extending from the end of the first fixed frame facing away from the central axis, through the central axis, to the end of the second fixed frame facing away from the central axis. This dimension is a dynamic dimension and changes with the movement of the folding assembly.

[0060] At the same time, since the first rotating arm and the first fixed frame are stretched apart by the first elastic member, and the second rotating arm and the second fixed frame are stretched apart by the second elastic member, the first elastic member and the second elastic member can be deformed under the action of external force. Therefore, during the movement of the folding assembly, the movement gap between the first rotating arm and the first fixed frame and the movement gap between the second rotating arm and the second fixed frame can make the relative movement between the first fixed frame and the second fixed frame smoother, and the elastic force of the first elastic member and the second elastic member enables the first fixed frame and the second fixed frame to maintain an stretched state, so as to better support the bending portion of the flexible display screen, so as to ensure the reliability of the flexible display screen.

[0061] In a possible implementation, the folding assembly further includes a first damping member, which is mounted on the sliding end of the first transmission arm. The first fixed frame further includes a first slide groove and a first recessed area and a second recessed area connected to the first slide groove, the first recessed area is located on the side of the second recessed area close to the central axis, and the first fixed frame further includes a first top block located between the first recessed area and the second recessed area. The sliding end of the first transmission arm is mounted on the first slide groove, and when the folding assembly is in an open state, the first damping member is partially inserted into the first recessed area, and when the folding assembly is in a closed state, the first damping member passes over the first top block and is partially inserted into the second recessed area.

[0062] The folding assembly further includes a second damping member, which is mounted on the sliding end of the second transmission arm. The second fixed frame further includes a second slide groove and a third recessed area and a fourth recessed area connected to the second slide groove, the third recessed area is located on the side of the fourth recessed area close to the central axis, and the second fixed frame further includes a second top block located between the third recessed area and the fourth recessed area. The sliding end of the second transmission arm is mounted on the second slide groove, and when the folding assembly is in an open state, the second damping member is partially inserted into the third recessed area, and when the folding assembly is in a closed state, the second damping member passes over the second top block and is partially inserted into the fourth recessed area.

[0063] In this implementation, since the folding assembly is provided with a first damping member and a second damping member, the first damping member is used to provide a damping force during the relative sliding of the first transmission arm and the first fixed frame, the first fixed frame is used to connect the first shell of the folding device, and the second damping member is used to provide a damping force during the relative sliding of the second transmission arm and the second fixed frame, and the second fixed frame is used to connect the second shell of the folding device. In the process of the first fixed frame driving the first shell to rotate relative to the central axis and the second fixed frame driving the second shell to rotate relative to the central axis, the first damping member and the second damping member provide a certain damping force, so that the user can experience a better sense of mechanism operation.

[0064] In a possible implementation, the folding assembly further includes a plurality of synchronous gears, and the plurality of synchronous gears mesh with the rotating end of the first transmission arm and the rotating end of the second transmission arm.

[0065] In this implementation, multiple synchronous gears are used to synchronize the rotation angles of the first transmission arm and the second transmission arm relative to the central axis during the movement of the folding component, thereby synchronizing the rotation angles of the first fixed frame and the second fixed frame. The first fixed frame drives the first shell to rotate, and the second fixed frame drives the second shell to rotate. Therefore, multiple synchronous gears can synchronize the first shell and the second shell during the movement of the folding device to improve the user experience.

[0066] In a third aspect, the present application also provides a folding device, comprising a first shell, a second shell and any one of the folding components above, wherein a first fixing frame of the folding component is fixedly connected to the first shell, and a second fixing frame of the folding component is fixedly connected to the second shell.

[0067] In the present application, the folding assembly controls the motion trajectory of the first fixed frame by the first transmission arm and the first rotating arm, and controls the motion trajectory of the second fixed frame and the second shell by the second transmission arm and the second rotating arm, so that in the process of relative folding of the first shell and the second shell, the first fixed frame drives the first shell to move in the direction close to the central axis, and the second fixed frame drives the second shell to move in the direction close to the central axis, and in the process of relative unfolding of the first shell and the second shell, the first fixed frame drives the first shell to move in the direction away from the central axis, and the second fixed frame drives the second shell to move in the direction away from the central axis. That is, the folding device can realize the inward pulling movement of the shell in the process of changing from the flattened state to the closed state, and the outward pushing movement of the shell in the process of changing from the closed state to the flattened state, so that the folding device can realize the deformation movement with the flexible display screen in the neutral plane or close to the neutral plane in the process of unfolding or folding, thereby reducing the risk of pulling or squeezing the flexible display screen, protecting the flexible display screen, improving the reliability of the flexible display screen, and making the flexible display screen and the electronic device have a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application when it is in an open state;

[0069] Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device shown in the intermediate state;

[0070] Figure 3 yes Figure 1 A schematic diagram of the structure of the electronic device shown in the closed state;

[0071] Figure 4 yes Figure 1 A schematic structural diagram of the folding device shown;

[0072] Figure 5 yes Figure 4 A schematic diagram of a partially exploded structure of the folding assembly shown;

[0073] Figure 6 yes Figure 5 A schematic diagram of a partially exploded structure of the folding assembly shown;

[0074] Figure 7 yes Figure 6 A schematic diagram of the structure of the folding assembly shown at another angle;

[0075] Figure 8 yes Figure 6 A schematic diagram of the exploded structure of the first connecting component shown;

[0076] Fig. 9 yes Figure 8 A schematic structural diagram of the first connecting component shown at another angle;

[0077] Fig.10 yes Figure 8 A partial structural schematic diagram of the first fixing frame and the second fixing frame shown;

[0078] Fig.11 yes Figure 8 A schematic diagram of the exploded structure of the first elastic member shown;

[0079] Fig.12 yes Figure 5 A schematic diagram of a portion of the structure of the folding assembly shown;

[0080] Fig.13 yes Fig.12 A schematic diagram of a portion of the structure of the folding assembly shown;

[0081] Fig.14 yes Fig.12 A schematic diagram of the structure of the folding assembly shown at another angle;

[0082] Fig.15 yes Fig.14 A schematic diagram of a portion of the structure of the folding assembly shown;

[0083] Fig.16 yes Fig.15 A schematic diagram of the structure when the folding assembly is in a closed state;

[0084] Fig.17 yes Fig.16 A schematic diagram of the structure of the folding assembly shown at another angle;

[0085] Fig.18 yes Fig.12 The schematic diagram of the cross-sectional structure of the folding assembly shown is taken along AA;

[0086] Fig.19 yes Fig.12 The cross-sectional structure diagram of the folding assembly shown is taken along BB;

[0087] Fig. 20 yes Fig.18 A schematic diagram of the structure when the structure is in a closed state;

[0088] Fig.21 yes Fig.19 A schematic diagram of the structure when the structure is in a closed state;

[0089] Fig. 22 yes Figure 5 A schematic diagram of the structure of the folding assembly shown;

[0090] Fig.23 yes Fig. 22 A schematic diagram of the structure of the folding assembly shown at another angle;

[0091] Fig.24 yes Fig. 22 A schematic structural diagram of the folding assembly when shown in a closed state. DETAILED DESCRIPTION

[0092] The following embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0093] The embodiments of the present application provide a folding assembly, a folding device, and an electronic device. The electronic device includes a folding device and a flexible display screen fixed to the folding device. The folding device includes a first shell, a second shell, and a folding assembly connected between the first shell and the second shell. The folding device can be unfolded to an open state, or folded to a closed state, or in an intermediate state between the open state and the closed state. The flexible display screen unfolds or folds with the folding device. By optimizing the folding assembly, the electronic device can maintain a better flatness of the bending portion of the flexible display screen in the open state, avoid problems such as arching, so as to improve the reliability of the flexible display screen, so that the flexible display screen and the electronic device have a longer service life.

[0094] Please refer to Figures 1 to 3 , Figure 1 is a structural diagram of an electronic device 100 provided in an embodiment of the present application when it is in an open state. Figure 2 yes Figure 1 The schematic diagram of the structure of the electronic device 100 is shown in the intermediate state. Figure 3 yes Figure 1 The electronic device 100 is a schematic diagram of a structure when it is in a closed state. The electronic device 100 may be an electronic product such as a mobile phone, a tablet computer, a notebook computer, a wearable device, etc. This embodiment is described by taking the electronic device 100 as a mobile phone as an example.

[0095] The electronic device 100 includes a folding device 10 and a flexible display screen 20. The folding device 10 is used to carry the flexible display screen 20. The folding device 10 includes a first shell 1, a second shell 2 and a folding component 3, and the folding component 3 connects the first shell 1 and the second shell 2. Through the movement of the folding component 3, the first shell 1 and the second shell 2 can be relatively unfolded to an open state or relatively folded to a closed state. Among them, the first shell 1 and the second shell 2 are relatively unfolded to an open state, corresponding to the open state of the electronic device 100, the open state of the folding device 10 and the open state of the folding component 3. The first shell 1 and the second shell 2 are relatively folded to a closed state, corresponding to the closed state of the electronic device 100, the closed state of the folding device 10 and the closed state of the folding component 3.

[0096] like Figure 1 As shown, the first shell 1 and the second shell 2 can be relatively unfolded to an open state, so that the electronic device 100 is in an open state. Exemplarily, when the first shell 1 and the second shell 2 are in the open state, the two can be approximately 180° (a small deviation is also allowed, such as 165°, 177° or 185°). Figure 2 As shown, the first housing 1 and the second housing 2 can be relatively rotated (unfolded or folded) to an intermediate state, so that the electronic device 100 is in the intermediate state. Figure 3 As shown, the first shell 1 and the second shell 2 can be folded relative to each other to a closed state, so that the electronic device 100 is in a closed state. Exemplarily, when the first shell 1 and the second shell 2 are in a closed state, the two can be completely folded to be parallel to each other (a slight deviation is also allowed). Figure 2 The intermediate state shown may be any state between the open state and the closed state. Therefore, the electronic device 100 can switch between the open state and the closed state by moving the folding component 3 .

[0097] In some embodiments, the flexible display screen 20 is used to display images. Exemplarily, the flexible display screen 20 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, etc.

[0098] The flexible display screen 20 includes a first non-bending portion 201, a bending portion 202, and a second non-bending portion 203 arranged in sequence. The flexible display screen 20 is fixed to the folding device 10. For example, the flexible display screen 20 can be bonded to the folding device 10 by an adhesive layer. The first non-bending portion 201 of the flexible display screen 20 is fixed to the first shell 1, the second non-bending portion 203 is fixed to the second shell 2, and the bending portion 202 is arranged corresponding to the folding component 3. During the unfolding or folding process of the folding device 10, that is, during the relative unfolding or relative folding process of the first shell 1 and the second shell 2, the bending portion 202 is deformed. Figure 1 As shown, when the first shell 1 and the second shell 2 are in the open state, the flexible display screen 20 is in a flattened state; Figure 2 As shown, when the first shell 1 and the second shell 2 are in the intermediate state, the flexible display screen 20 is in the intermediate state between the flattened state and the closed state; Figure 3 As shown, when the first housing 1 and the second housing 2 are in a closed state, the flexible display screen 20 is in a closed state. When the electronic device 100 is in a closed state, the flexible display screen 20 can be located outside the folding device 10, and the flexible display screen 20 can be roughly U-shaped.

[0099] In this embodiment, the flexible display screen 20 can be unfolded or folded with the folding device 10. When the electronic device 100 is in an open state, the flexible display screen 20 is in a flattened state and can display in full screen, so that the electronic device 100 has a larger display area to improve the user's viewing experience. When the electronic device 100 is in a closed state, the plane size of the electronic device 100 is small (with a small width size), which is convenient for users to carry and store.

[0100] It is understandable that this embodiment is described by taking "the rotation center of the electronic device 100 is parallel to the width direction of the electronic device 100" as an example. In this case, the electronic device 100 can rotate left and right, and the unfolding or folding of the electronic device 100 affects the width dimension of the electronic device 100. In some other embodiments, the rotation center of the electronic device 100 may also be parallel to the length direction of the electronic device 100. In this case, the electronic device 100 can rotate up and down, and the unfolding or folding of the electronic device 100 affects the length dimension of the electronic device 100.

[0101] Please refer to Figures 4 to 7 , Figure 4 yes Figure 1 The structural schematic diagram of the folding device 10 is shown, Figure 5 yes Figure 4 The schematic diagram of the partially exploded structure of the folding assembly 3 is shown, Figure 6 yes Figure 5 The schematic diagram of the partially exploded structure of the folding assembly 3 is shown, Figure 7 yes Figure 6 The folding assembly 3 is shown in another perspective. The drawings of this application do not show the entire structure of the first shell 1 and the second shell 2, in order to simplify the drawings and more clearly show the main structure of the folding device 10. The first shell 1 and the second shell 2 can be integrally formed structural parts, or composite structural parts assembled from multiple structural parts. Figure 4 The folding assembly 3 is shown at a relative viewing angle Figure 1 The folding assembly 3 is shown turned over.

[0102] In some embodiments, the folding assembly 3 includes a central axis 31, a first connecting assembly 32, a second connecting assembly 33, a first shielding plate 34, and a second shielding plate 35. Exemplarily, the central axis 31 is located between the first shell 1 and the second shell 2. The central axis 31 includes an inner shell 311 and an outer shell 312, and the inner shell 311 and the outer shell 312 are fixed to each other to form a plurality of installation spaces, such as arc grooves, shaft holes, and connecting holes, and other components can be installed in the installation space to be movably connected or fixedly connected to the central axis 31.

[0103] The first connecting assembly 32 and the second connecting assembly 33 are both connected to the first shell 1, the central axis 31 and the second shell 2. Through the movement of the first connecting assembly 32 and the second connecting assembly 33, the first shell 1 and the second shell 2 can rotate relative to the central axis 31. Among them, the first connecting assembly 32 and the second connecting assembly 33 are arranged at intervals in the axial direction of the central axis 31, and can be used as end connecting assemblies, for example, they can be connected to the top and bottom of the central axis 31 respectively. In this embodiment, through the coordinated movement of the first connecting assembly 32 and the second connecting assembly 33, the movement of the first shell 1 and the second shell 2 when rotating relative to the central axis 31 is more stable and reliable.

[0104] Among them, the first connecting component 32 and the second connecting component 33 can be the same structure, mirror symmetric structure, central symmetric structure or other different structures. The embodiment of the present application takes the first connecting component 32 and the second connecting component 33 as an example for explanation, and the following mainly describes the first connecting component 32. In some other embodiments, the folding component 3 can also include a middle connecting component, which can be connected to the middle of the central axis 31 and connect the first shell 1 and the second shell 2 to increase the reliability of the folding device 10. The structure of the middle connecting component can be the same, partially the same or completely different from the structure of the first connecting component 32, and the embodiment of the present application does not strictly limit this.

[0105] Please refer to Figure 8 and Fig. 9 , Figure 8 yes Figure 6 The exploded structural diagram of the first connecting component 32 is shown in FIG. Fig. 9 yes Figure 8 The structure diagram of the first connecting component 32 shown in another angle.

[0106] In some embodiments, the first connecting component 32 includes a first fixed frame 321, a second fixed frame 322, a first rotating arm 323, a first transmission arm 324, a second rotating arm 325, a second transmission arm 326, a first damping member 327, a second damping member 328, a synchronous gear 329, a first elastic member 36, a second elastic member 37, a third rotating arm 38 and a fourth rotating arm 39.

[0107] For example, please refer to Figure 8 and Fig.10 , Fig.10 yes Figure 8 The schematic diagram of the partial structure of the first fixing frame 321 and the second fixing frame 322 is shown. The first fixing frame 321 includes a first arc-shaped groove 321a, a first receiving groove 321b and a first connecting port 321c. Among them, the first connecting port 321c connects the first receiving groove 321b and the first arc-shaped groove 321a. One end of the first arc-shaped groove 321a facing away from the first connecting port 321c is connected to the outside of the first fixing frame 321. The first arc-shaped groove 321a, the first receiving groove 321b and the first connecting port 321c are arranged in groups, and the first fixing frame 321 can be provided with one or more groups of the above structures, for example, Figure 8 and Fig. 9 The structure shown includes two groups of the above structures. Among them, the first fixing frame 321 can include a main body and a matching block, and the matching block is installed on the main body to make the slot structure of the first fixing frame 321 easier to implement. For example, the first arc groove 321a and the first communication port 321c can be formed by the matching of the main body and the matching block.

[0108] The second fixing frame 322 includes a second arc-shaped groove 322a, a second receiving groove 322b and a second connecting port 322c. The second connecting port 322c connects the second receiving groove 322b with the second arc-shaped groove 322a. The end of the second arc-shaped groove 322a facing away from the second connecting port 322c is connected to the outside of the second fixing frame 322. The second arc-shaped groove 322a, the second receiving groove 322b and the second connecting port 322c are arranged in groups, and the second fixing frame 322 can be provided with one or more groups of the above structures. The second fixing frame 322 can include a main body and a matching block, and the matching block is installed on the main body to make the slot structure of the second fixing frame 322 easier to realize. For example, the second arc-shaped groove 322a and the second connecting port 322c can be formed by the matching of the main body and the matching block.

[0109] Among them, Fig. 9 As shown, the first fixing frame 321 further includes a first slide groove 321d and a first recessed area 321e and a second recessed area 321f connected to the first slide groove 321d, and the first fixing frame 321 further includes a first top block 321g located between the first recessed area 321e and the second recessed area 321f. The second fixing frame 322 further includes a second slide groove 322d and a third recessed area 322e and a fourth recessed area 322f connected to the second slide groove 322d, and the second fixing frame 322 further includes a second top block 322g located between the third recessed area 322e and the fourth recessed area 322f.

[0110] For example, Figure 8 and Fig. 9 As shown, the first rotating arm 323 includes a first end 323a and a second end 323b. The first end 323a of the first rotating arm 323 can be an arc-shaped arm, and the second end 323b of the first rotating arm 323 can be an arc-shaped arm. The two arc-shaped arms of the first rotating arm 323 can be directly connected or connected through an intermediate structure to meet the connection requirements of the first rotating arm 323. The first rotating arm 323 can be an integrally formed structural member to obtain a higher structural strength. In some other embodiments, the first rotating arm 323 can also be formed into an integrated structure by assembly methods (such as welding, bonding, snap-fit ​​connection, etc.).

[0111] The second end 323b of the first rotating arm 323 may include a first arc-shaped body 3231 and a first abutting block 3232. The first arc-shaped body 3231 is connected to the first end 323a of the first rotating arm 323. The first abutting block 3232 may be located at the end of the first arc-shaped body 3231 away from the first end 323a of the first rotating arm 323. The first abutting block 3232 may be convexly disposed on the outer arc surface of the first arc-shaped body 3231. While ensuring that the first arc-shaped body 3231 has sufficient structural strength, a through hole or a groove may be provided in the middle or the periphery, and the through hole or the groove may be staggered with the first abutting block 3232 to reduce the weight of the first rotating arm 323.

[0112] It can be understood that the first end 323a and the second end 323b of the first rotating arm 323 are arc-shaped arms, which means that the main structure thereof is an arc-shaped arm structure (such as the first arc-shaped body 3231) to meet the connection requirements, and is not limited to the first end 323a and the second end 323b of the first rotating arm 323 having only the arc-shaped arm structure. The first end 323a and the second end 323b of the first rotating arm 323 may also include the first abutting block 3232, the through hole and other structures described above. Of course, in some embodiments, the first end 323a and the second end 323b of the first rotating arm 323 may also only include the arc-shaped arm structure, and the embodiments of the present application do not strictly limit this.

[0113] The number of the first rotating arms 323 may be one or more, such as two in the illustrated embodiment.

[0114] For example, Figure 8 As shown, the second rotating arm 325 includes a first end 325a and a second end 325b. The first end 325a of the second rotating arm 325 can be an arc-shaped arm, and the second end 325b of the second rotating arm 325 can be an arc-shaped arm. The two arc-shaped arms of the second rotating arm 325 can be directly connected or connected through an intermediate structure to meet the connection requirements of the second rotating arm 325. The second rotating arm 325 can be an integrally formed structural member to obtain a higher structural strength. In some other embodiments, the second rotating arm 325 can also be formed into an integrated structure by assembly methods (such as welding, bonding, snap-fit ​​connection, etc.).

[0115] The second end 325b of the second rotating arm 325 may include a second arc-shaped body 3251 and a second abutting block 3252. The second arc-shaped body 3251 is connected to the first end 325a of the second rotating arm 325. The second abutting block 3252 may be located at the end of the second arc-shaped body 3251 away from the first end 325a of the second rotating arm 325. The second abutting block 3252 may be convexly arranged on the outer arc surface of the second arc-shaped body 3251. While ensuring that the second arc-shaped body 3251 has sufficient structural strength, a through hole or a groove may be provided in the middle or the periphery, and the through hole or the groove may be staggered with the second abutting block 3252 to reduce the weight of the second rotating arm 325.

[0116] It can be understood that the first end 325a and the second end 325b of the second rotating arm 325 are arc-shaped arms, which means that the main structure thereof is an arc-shaped arm structure (such as the second arc-shaped body 3251) to meet the connection requirements, and is not limited to the first end 325a and the second end 325b of the second rotating arm 325 only having the arc-shaped arm structure. The first end 325a and the second end 325b of the second rotating arm 325 may also include the second abutting block 3252, the through hole and other structures described above. Of course, in some embodiments, the first end 325a and the second end 325b of the second rotating arm 325 may also only include the arc-shaped arm structure, and the embodiment of the present application does not strictly limit this.

[0117] The number of the second rotating arms 325 may be one or more, such as two in the illustrated embodiment.

[0118] For example, Fig. 9 As shown, the first transmission arm 324 includes a rotating end 324a and a sliding end 324b. The rotating end 324a of the first transmission arm 324 may include a rotating shaft and a gear. For example, the rotating end 324a of the first transmission arm 324 may be a gear shaft structure. The rotating shaft may be integrally formed with the gear, or may be matched by assembly. The sliding end 324b of the first transmission arm 324 may include a first mounting groove 3241.

[0119] Exemplarily, the second transmission arm 326 includes a rotating end 326a and a sliding end 326b. The rotating end 326a of the second transmission arm 326 may include a rotating shaft and a gear. For example, the rotating end 326a of the second transmission arm 326 may be a gear shaft structure. The rotating shaft may be integrally formed with the gear, or may be matched by assembly. The sliding end 326b of the second transmission arm 326 may include a second mounting groove 3261.

[0120] For example, Fig. 9 As shown, the synchronous gear 329 may include a rotating shaft and a gear, for example, a gear shaft structure, wherein the rotating shaft may be integrally formed with the gear, or may be matched by assembly.

[0121] See also Fig.11 , Fig.11 yes Figure 8 A schematic diagram of the exploded structure of the first elastic member 36 is shown.

[0122] In some embodiments, the first elastic member 36 includes a first elastic body 361 and a first bracket 362, wherein the first elastic body 361 is made of elastic material, and the first bracket 362 is made of hard material. For example, the first elastic body 361 may be a spring structure. In some other embodiments, the first elastic body 361 may also be an elastic block, made of elastic silicone or elastic rubber. The first bracket 362 may be made of metal, hard plastic, ceramic, or other materials.

[0123] The first bracket 362 includes a first bottom plate 3621 and a first matching block 3622 protruding from one side of the first bottom plate 3621. The first matching block 3622 includes a top surface 3622a, a transition surface 3622b and a connection surface 3622c connected in sequence, the top surface 3622a faces away from the first bottom plate 3621 and is spaced from the first bottom plate 3621, the transition surface 3622b is a curved surface or a free-form surface, the connection surface 3622c is curved and extends in a direction close to the first bottom plate 3621, and the connection surface 3622c is a curved surface or a free-form surface. The first elastic body 361 is located on the side of the first bottom plate 3621 facing away from the first matching block 3622. The first bracket 362 may also include a first guide column 3623, the first guide column 3623 is protruding from the side of the first bottom plate 3621 facing away from the first matching block 3622, and the first elastic body 361 may be sleeved on the first guide column 3623.

[0124] The number of the first elastic members 36 may be one or more, such as two in the illustrated embodiment.

[0125] For example, Figure 8 As shown, the second elastic member 37 can adopt the same structure as the first elastic member 36. For example, the second elastic member 37 can include a second elastic body 371 and a second bracket 372. For the detailed structure of the second elastic member 37, please refer to the relevant content of the first elastic member 36.

[0126] For example, Figure 8 As shown, the third rotating arm 38 includes a first end 381 and a second end 382. The first end 381 of the third rotating arm 38 may have a rotating shaft hole or be provided with a rotating shaft, and the second end 382 of the third rotating arm 38 may be an arc-shaped arm. The fourth rotating arm 39 includes a first end 391 and a second end 392. The first end 391 of the fourth rotating arm 39 may have a rotating shaft hole or be provided with a rotating shaft, and the second end 392 of the fourth rotating arm 39 may be an arc-shaped arm.

[0127] Please refer to Figures 12 to 17 , Fig.12 is Figure 5 a partial structural schematic diagram of the folding assembly 3 shown in Fig.13 is Fig.12 a partial structural schematic diagram of the folding assembly 3 shown in Fig.14 is Fig.12 a structural schematic diagram of the folding assembly 3 shown in another angle, Fig.15 is Fig.14 a partial structural schematic diagram of the folding assembly 3 shown in Fig.16 is Fig.15 a structural schematic diagram of the folding assembly 3 when in the closed state, Fig.17 is Fig.16 a structural schematic diagram of the folding assembly 3 shown in another angle. Among them, Figures 12 to 15 the folding assembly 3 shown is in the open state.

[0128] In some embodiments, the first end 323a of the first rotating arm 323 is rotatably connected to the central axis 31, and the second end 323b of the first rotating arm 323 is rotatably connected to the first fixing bracket 321. The rotating end 324a of the first transmission arm 324 is rotatably connected to the central axis 31, and the sliding end 324b of the first transmission arm 324 is slidably connected to the first fixing bracket 321. The first end 325a of the second rotating arm 325 is rotatably connected to the central axis 31, and the second end 325b of the second rotating arm 325 is rotatably connected to the second fixing bracket 322. The rotating end 326a of the second transmission arm 326 is rotatably connected to the central axis 31, and the sliding end 326b of the second transmission arm 326 is slidably connected to the second fixing bracket 322.

[0129] In this embodiment, the first fixing bracket 321 is rotatably connected to the central axis 31 through the first rotating arm 323, and the second fixing bracket 322 is rotatably connected to the central axis 31 through the second rotating arm 325. The first fixing bracket 321 and the second fixing bracket 322 can rotate relative to the central axis 31 to be relatively unfolded to the open state or relatively folded to the closed state. As Figures 12 to 15 shown, when the folding assembly 3 is in the open state, the first fixing bracket 321 and the second fixing bracket 322 are respectively located on both sides of the central axis 31, and the two can be in a flattened form. As Fig.16 and Fig.17 shown, when the folding assembly 3 is in the closed state, the first fixing bracket 321 and the second fixing bracket 322 are located on the same side of the central axis 31, and the two can be in a folded form.

[0130] Among them, the first transmission arm 324 is rotatably connected to the central axis 31 and slidably connected to the first fixed frame 321, forming a connecting rod slider structure, the first rotating arm 323 is rotatably connected to the central axis 31 and rotatably connected to the first fixed frame 321, forming a connecting rod structure; the second transmission arm 326 is rotatably connected to the central axis 31 and slidably connected to the second fixed frame 322, forming a connecting rod slider structure, the second rotating arm 325 is rotatably connected to the central axis 31 and rotatably connected to the second fixed frame 322, forming a connecting rod structure. The folding assembly 3 realizes the connection between the fixed frame (321, 322) and the central axis 31 through the connecting rod slider structure and the connecting rod structure, and the number of its components is small, the matching relationship and matching position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. Furthermore, since the central axis 31 is linked to the first fixing frame 321 through the first transmission arm 324 and the first rotating arm 323 and is linked to the second fixing frame 322 through the second transmission arm 326 and the second rotating arm 325, the folding assembly 3 has better mechanical tensile resistance and mechanical extrusion resistance.

[0131] For example, Figures 12 to 15 As shown, when the folding assembly 3 is in the open state, the first fixing frame 321 and the second fixing frame 322 are away from the central axis 31 and form a gap, such as Fig.16 and Fig.17 As shown, the first fixing frame 321 and the second fixing frame 322 are close to the central axis 31, and parts of the structures of the first fixing frame 321 and the second fixing frame 322 are embedded in the central axis 31. Therefore, the folding component 3 controls the movement trajectory of the first fixing frame 321 through the first transmission arm 324 and the first rotating arm 323, and controls the movement trajectory of the second fixing frame 322 through the second transmission arm 326 and the second rotating arm 325, so that the fixing frame can be pulled inward during the change from the open state to the closed state, and the fixing frame can be pushed outward during the change from the closed state to the open state. Therefore, the length of the folding component 3 can be kept consistent or close during the movement, so that the bending portion 202 of the flexible display screen 20 can be better supported (see Figure 1 ), reducing the risk of pulling or squeezing the flexible display screen 20, and improving the reliability and service life of the flexible display screen 20 and the electronic device 100. The length dimension of the folding component 3 refers to the dimension extending from the end of the first fixing frame 321 facing away from the central axis 31, through the central axis 31, to the end of the second fixing frame 322 facing away from the central axis 31. This dimension is a dynamic dimension and changes with the movement of the folding component 3.

[0132] In the present application, since the first fixed frame 321 is fixedly connected to the first shell 1 and the second fixed frame 322 is fixedly connected to the second shell 2, the folding device 10 can jointly control the movement trajectory of the first fixed frame 321 and the first shell 1 through the first transmission arm 324 and the first rotating arm 323, and jointly control the movement trajectory of the second fixed frame 322 and the second shell 2 through the second transmission arm 326 and the second rotating arm 325, so that during the relative folding process of the first shell 1 and the second shell 2, the first fixed frame 321 can drive the first shell 1 to move toward the direction close to the central axis 31, and the second fixed frame 322 can drive the second shell 2 to move toward the direction close to the central axis 31; during the relative unfolding process of the first shell 1 and the second shell 2, the first fixed frame 321 can drive the first shell 1 to move away from the central axis 31, and the second fixed frame 322 can drive the second shell 2 to move away from the central axis 31. That is, the folding device 10 can realize the inward pulling movement of the shell during the process of changing from the flattened state to the closed state, and the outward pushing movement of the shell during the process of changing from the closed state to the flattened state, so that the folding device 10 can realize the deformation movement with the flexible display screen 20 being in the neutral plane or close to the neutral plane during the unfolding or folding process, 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 making the flexible display screen 20 and the electronic device 100 have a longer service life.

[0133] It is understandable that in some other embodiments, the folding component 3 may also adopt a connecting rod structure and other connecting structures to realize the movement process of the first fixing frame 321 and the second fixing frame 322 rotating relative to the central axis 31, and the embodiments of the present application do not strictly limit this.

[0134] Please refer to Fig.18 and Fig.19 , Fig.18 yes Fig.12 The cross-sectional structure diagram of the folding assembly 3 is shown along AA. Fig.19 yes Fig.12 The cross-sectional structure diagram of the folding assembly 3 is shown along line BB.

[0135] In some embodiments, the central axis 31 includes a third arc groove 313 and a fourth arc groove 314, and the third arc groove 313 and the fourth arc groove 314 extend to both sides of the central axis 31. The third arc groove 313 and the fourth arc groove 314 can be formed by the inner shell 311 and the outer shell 312 of the central axis 31 to reduce the difficulty of processing and facilitate the connection of other components with the central axis 31.

[0136] The first end 323a of the first rotating arm 323 is installed in the third arc groove 313 to be rotationally connected to the central axis 31 through a virtual axis structure; the second end 323b of the first rotating arm 323 is installed in the first arc groove 321a to be rotationally connected to the first fixed frame 321 through a virtual axis structure. The first end 325a of the second rotating arm 325 is installed in the fourth arc groove 314 to be rotationally connected to the central axis 31 through a virtual axis structure; the second end 325b of the second rotating arm 325 is installed in the second arc groove 322a to be rotationally connected to the second fixed frame 322 through a virtual axis structure. The two components are rotationally connected through a virtual axis structure, which means that the two components do not realize mutual rotation through a physical rotating shaft, but realize relative rotation around the rotation center through the structure of the arc arm and the arc groove.

[0137] In this embodiment, the first rotating arm 323 and the central axis 31 are rotationally connected via a virtual axis structure, and the second rotating arm 325 and the central axis 31 are rotationally connected via a virtual axis structure, which is beneficial to reducing the difficulty of designing the rotational connection structure between the rotating arm and the central axis 31, and can reduce the overall thickness of the folding component 3, which is beneficial to making the folding component 3 lighter and thinner.

[0138] In addition, the first rotating arm 323 is rotatably connected to the first fixed frame 321 through a virtual axis structure, which is beneficial to reducing the thickness of the first fixed frame 321. The second rotating arm 325 is rotatably connected to the second fixed frame 322 through a virtual axis structure, which is beneficial to reducing the thickness of the second fixed frame 322. This makes the folding component 3 have lower requirements for installation space, reduces the difficulty of assembling the folding component 3 with the first shell 1 and the second shell 2, and is beneficial to reducing the overall thickness of the folding device 10 and the electronic device 100.

[0139] Please refer to Fig.12 , Fig.18 as well as Fig.19 The first elastic member 36 is mounted on the first fixing frame 321, and the end of the first elastic member 36 close to the central axis 31 contacts the second end 323b of the first rotating arm 323, and the end of the first elastic member 36 away from the central axis 31 contacts the first fixing frame 321. The second elastic member 37 is mounted on the second fixing frame 322, and the end of the second elastic member 37 close to the central axis 31 contacts the second end 325b of the second rotating arm 325, and the end of the second elastic member 37 away from the central axis 31 contacts the second fixing frame 322. When the folding assembly 3 is in the open state, the first fixing frame 321 and the second fixing frame 322 are respectively located on both sides of the central axis 31, and the first elastic member 36 and the second elastic member 37 are in a compressed state.

[0140] In this embodiment, the first rotating arm 323 and the first fixed frame 321 are rotatably connected by a virtual axis structure, and a certain gap is designed between the second end 323b of the first rotating arm 323 and the first fixed frame 321 to achieve smooth rotation. When the folding assembly 3 is in the open state, the first elastic member 36 is in a compressed state, and the two ends of the first elastic member 36 contact the first fixed frame 321 and the second end 323b of the first rotating arm 323 respectively. The elastic force generated by the first elastic member 36 makes the first fixed frame 321 and the first rotating arm 323 open in a direction away from each other to absorb the gap between the first fixed frame 321 and the first rotating arm 323, so that the first fixed frame 321 and the first rotating arm 323 can move to the position in the open state. The second rotating arm 325 and the second fixed frame 322 are rotatably connected by a virtual axis structure, and a certain gap is designed between the second end 325b of the second rotating arm 325 and the second fixed frame 322 to achieve smooth rotation. When the folding component 3 is in the open state, the second elastic member 37 is also in a compressed state, and the two ends of the second elastic member 37 respectively contact the second fixed frame 322 and the second end 325b of the second rotating arm 325. The elastic force generated by the second elastic member 37 makes the second fixed frame 322 and the second rotating arm 325 spread away from each other to absorb the gap between the second fixed frame 322 and the second rotating arm 325, so that the second fixed frame 322 and the second rotating arm 325 can move into place in the open state.

[0141] In this embodiment, since the gap between the first fixed frame 321 and the first rotating arm 323 is absorbed, and the gap between the second fixed frame 322 and the second rotating arm 325 is absorbed, the first fixed frame 321 and the second fixed frame 322 are unfolded into place in the direction away from the central axis 31. Therefore, the folding component 3 can better flatten the bending portion 202 of the flexible display screen 20, avoiding the problem of the flexible display screen 20 arching in the middle due to long-term bending, so as to improve the flatness and reliability of the flexible display screen 20.

[0142] See also Fig. 20 and Fig.21 , Fig. 20 yes Fig.18 The schematic diagram of the structure when the structure is in a closed state, Fig.21 yes Fig.19 A schematic diagram of the structure when the structure is in a closed state.

[0143] In some embodiments, when the folding assembly 3 is in a closed state, the first fixing frame 321 and the second fixing frame 322 are located on the same side of the central axis 31 and are arranged opposite to each other, and the first elastic member 36 and the second elastic member 37 may be in a compressed state.

[0144] In this embodiment, when the folding component 3 is in a closed state, the first elastic member 36 and the second elastic member 37 are in a compressed state. The elastic force generated by the first elastic member 36 and the second elastic member 37 can also achieve the purpose of absorbing the movement gap, so that the flexible display screen 20 is stretched open by the folding device 10, and it is not easy to produce wrinkles or arches, so as to have higher reliability.

[0145] In the process of movement of the folding assembly 3, the states of the first elastic member 36 and the second elastic member 37 may change, for example, between a compressed state and a natural state, or the degree of compression may change, which is not strictly limited in the present application. The degree of compression of the first elastic member 36 and the second elastic member 37 in the open state and the closed state may be the same or different, which is not strictly limited in the present application. For example, in some other implementations, when the folding assembly 3 is in the closed state, the first elastic member 36 and the second elastic member 37 may also be in the natural state.

[0146] At the same time, since the first rotating arm 323 and the first fixed frame 321 are stretched apart by the first elastic member 36, and the second rotating arm 325 and the second fixed frame 322 are stretched apart by the second elastic member 37, the first elastic member 36 and the second elastic member 37 can be deformed under the action of external force. Therefore, during the movement of the folding component 3, the movement gap between the first rotating arm 323 and the first fixed frame 321 and the movement gap between the second rotating arm 325 and the second fixed frame 322 can make the relative movement between the first fixed frame 321 and the second fixed frame 322 smoother, and the elastic force of the first elastic member 36 and the second elastic member 37 enables the first fixed frame 321 and the second fixed frame 322 to maintain an open state, so as to better support the bending portion 202 of the flexible display screen 20, so as to ensure the reliability of the flexible display screen 20.

[0147] For example, Fig.18 and Fig. 20 As shown, the first bracket 362 of the first elastic member 36 abuts against the first rotating arm 323, and the two ends of the first elastic body 361 of the first elastic member 36 respectively abut against the first bracket 362 and the first fixing frame 321. In this embodiment, the first elastic body 361 is used to provide elastic force for the first elastic member 36, and the connection structure between the first bracket 362 and the first rotating arm 323 is stable and accurate, so that the first elastic member 36 can provide elastic force and can also accurately cooperate with the first rotating arm 323, which is conducive to ensuring the movement reliability of the folding assembly 3.

[0148] For example, Fig.18As shown, the first bottom plate 3621 and the first elastic body 361 of the first bracket 362 are located in the first receiving groove 321b, one end of the first elastic body 361 contacts the first bottom plate 3621, the other end of the first elastic body 361 contacts the groove wall of the first receiving groove 321b, and the first matching block 3622 is at least partially located in the first connecting port 321c. The first abutting block 3232 of the second end 323b of the first rotating arm 323 is located in the first connecting port 321c and abuts the first matching block 3622. The first matching block 3622 can be located entirely in the first connecting port 321c, or partially in the first connecting port 321c.

[0149] In this embodiment, the second end 323b of the first rotating arm 323 is installed on the first arc groove 321a, the first bottom plate 3621 and the first elastic body 361 are installed on the first accommodating groove 321b, and the first matching block 3622 and the first supporting block 3232 are matched at the first connecting port 321c. The first rotating arm 323, the first elastic member 36 and the first fixed frame 321 are arranged compactly to make full use of the space of the first fixed frame 321 and provide space utilization.

[0150] The wall surface of the first communication port 321 c can also be used to limit the first abutting block 3232 to prevent the first rotating arm 323 from being separated from the first fixing frame 321 , thereby improving the reliability of the folding assembly 3 .

[0151] For example, Fig.18 As shown, when the folding assembly 3 is in the open state, the first abutting block 3232 of the second end 323b of the first rotating arm 323 can contact the top surface 3622a or the transition surface 3622b of the first matching block 3622 of the first bracket 362; Fig. 20 As shown, when the folding assembly 3 is in the closed state, the first abutting block 3232 of the second end 323 b of the first rotating arm 323 may contact the connecting surface 3622 c of the first matching block 3622 .

[0152] In this embodiment, by designing the structure of the first matching block 3622 and the matching structure of the first rotating arm 323 and the first matching block 3622 in the open state and the closed state, the first elastic body 361 is in a compressed state in the open state to provide elastic force. In some embodiments, similarly, the first elastic body 361 can also be in a compressed state in the closed state through the structure of the first matching block 3622 and its matching structure with the first rotating arm 323.

[0153] For example, Fig.19 and Fig.21As shown, the second bracket 372 of the second elastic member 37 abuts the second rotating arm 325, and the two ends of the second elastic body 371 of the second elastic member 37 respectively abut the second bracket 372 and the second fixing frame 322. In this embodiment, the second elastic body 371 is used to provide elastic force for the second elastic member 37, and the connection structure between the second bracket 372 and the second rotating arm 325 is stable and accurate, so that the second elastic member 37 can not only provide elastic force, but also accurately cooperate with the second rotating arm 325, which is conducive to ensuring the movement reliability of the folding assembly 3.

[0154] For example, Fig.19 As shown, the second bottom plate 3721 and the second elastic body 371 of the second bracket 372 are located in the second receiving groove 322b, one end of the second elastic body 371 contacts the second bottom plate 3721, the other end of the second elastic body 371 contacts the groove wall of the second receiving groove 322b, and the second matching block 3722 is at least partially located in the second connecting port 322c. The second abutting block 3252 of the second end 325b of the second rotating arm 325 is located in the second connecting port 322c and abuts the second matching block 3722. The second matching block 3722 can be located entirely in the second connecting port 322c, or partially in the second connecting port 322c.

[0155] In this embodiment, the second end 325b of the second rotating arm 325 is installed on the second arc groove 322a, the second bottom plate 3721 and the second elastic body 371 are installed on the second accommodating groove 322b, and the second matching block 3722 is matched with the second supporting block 3252 at the second connecting port 322c. The second rotating arm 325, the second elastic member 37 and the second fixed frame 322 are arranged compactly to make full use of the space of the second fixed frame 322 and provide space utilization.

[0156] The wall surface of the second communication port 322 c can also be used to limit the second abutting block 3252 to prevent the second rotating arm 325 from being separated from the second fixing frame 322 , thereby improving the reliability of the folding assembly 3 .

[0157] For example, Fig.19 As shown, when the folding assembly 3 is in the open state, the second abutting block 3252 of the second end 325b of the second rotating arm 325 can contact the top surface 3722a or the transition surface 3722b of the second matching block 3722 of the second bracket 372; Fig.21 As shown, when the folding assembly 3 is in the closed state, the second abutting block 3252 of the second end 325 b of the second rotating arm 325 can contact the connecting surface 3722 c of the second matching block 3722 .

[0158] In this embodiment, by designing the structure of the second matching block 3722 and the matching structure of the second rotating arm 325 and the second matching block 3722 in the open state and the closed state, the second elastic body 371 is in a compressed state in the open state to provide elastic force. In some embodiments, similarly, the second elastic body 371 can also be in a compressed state in the closed state through the structure of the second matching block 3722 and its matching structure with the second rotating arm 325.

[0159] It is understandable that in some other embodiments, the matching structure between the first matching block 3622 and the first abutting block 3232 and / or the matching structure between the second matching block 3722 and the second abutting block 3252 may also have other implementation methods, and the embodiments of the present application do not strictly limit this. In some other embodiments, the first rotating arm 323 may not be provided with the first abutting block 3232, and the first bracket 362 may also have other structures, and the second end 323b of the first rotating arm 323 directly abuts the first bracket 362 by the end of the arc arm; the second rotating arm 325 may not be provided with the second abutting block 3252, and the second bracket 372 may also have other structures, and the second end 325b of the second rotating arm 325 directly abuts the second bracket 372 by the end of the arc arm, and the embodiments of the present application do not strictly limit this. In some other embodiments, the first elastic member 36 and / or the second elastic member 37 may also have other design structures. For example, the first elastic member 36 and / or the second elastic member 37 are elastic bodies as a whole, and both ends of the elastic bodies directly contact the corresponding rotating arms and fixing frames. The embodiments of the present application do not strictly limit this.

[0160] Please refer again Figures 15 to 17 For example, the rotating end 324a of the first transmission arm 324 can be installed in the installation space of the central axis 31, and is rotationally connected to the central axis 31 through a physical axis structure. For example, the rotating shaft of the rotating end 324a of the first transmission arm 324 can be installed in the rotating shaft hole of the central axis 31. The two components are rotationally connected through a physical axis structure, which means that the two components realize mutual rotation through a physical rotating shaft. The rotating shaft has a rotation center, and the two components rotate relative to each other around the rotation center. The rotating shaft can be a structural member independent of the two components, or can be fixedly connected to one of the structural members. The rotating end 326a of the second transmission arm 326 can be installed in the installation space of the central axis 31, and is rotationally connected to the central axis 31 through a physical axis structure. For example, the rotating shaft of the rotating end 326a of the second transmission arm 326 can be installed in the rotating shaft hole of the central axis 31.

[0161] Exemplarily, the multiple synchronous gears 329 of the folding assembly 3 mesh with the rotating end 324a of the first transmission arm 324 and the rotating end 326a of the second transmission arm 326. The multiple synchronous gears 329 are installed in the installation space of the central axis 31, and the synchronous gears 329 can be rotatably connected to the central axis 31 through a physical shaft structure.

[0162] In this embodiment, multiple synchronous gears 329 are used to synchronize the rotation angles of the first transmission arm 324 and the second transmission arm 326 relative to the central axis 31 during the movement of the folding component 3, thereby synchronizing the rotation angles of the first fixed frame 321 and the second fixed frame 322. The first fixed frame 321 drives the first shell 1 to rotate, and the second fixed frame 322 drives the second shell 2 to rotate. Therefore, multiple synchronous gears 329 can synchronize the first shell 1 and the second shell 2 during the movement of the folding device 10 to improve the user experience.

[0163] For example, Fig.15 and Fig.17 As shown, the sliding end 324b of the first transmission arm 324 can be installed in the first sliding groove 321d of the first fixing frame 321, and can slide in the first sliding groove 321d to slide relative to the first fixing frame 321. The first damping member 327 is installed at the sliding end 324b of the first transmission arm 324, for example, it can be installed in the first installation groove 3241. The first recessed area 321e of the first fixing frame 321 is located on the side of the second recessed area 321f close to the central axis 31. Fig.15 As shown, when the folding assembly 3 is in the open state, the first damping member 327 is partially inserted into the first recessed area 321e; Fig.17 As shown, when the folding assembly 3 is in the closed state, the first damping member 327 passes over the first top block 321g and is partially inserted into the second recessed area 321f.

[0164] like Fig.15 and Fig.16 As shown, the sliding end 326b of the second transmission arm 326 can be installed in the second slide groove 322d of the second fixing frame 322, and can slide in the second slide groove 322d to slide relative to the second fixing frame 322. The second damping member 328 is installed on the sliding end 326b of the second transmission arm 326, for example, it can be installed in the second installation groove 3261. The third recessed area 322e of the second fixing frame 322 is located on the side of the fourth recessed area 322f close to the central axis 31. Fig.15 As shown, when the folding assembly 3 is in the open state, the second damping member 328 is partially inserted into the third recessed area 322e; Fig.16 As shown, when the folding assembly 3 is in the closed state, the second damping member 328 passes over the second top block 322g and is partially inserted into the fourth recessed area 322f.

[0165] In this embodiment, since the folding component 3 is provided with a first damping member 327 and a second damping member 328, the first damping member 327 is used to provide a damping force during the relative sliding of the first transmission arm 324 and the first fixed frame 321, the first fixed frame 321 is used to connect the first shell 1 of the folding device 10, the second damping member 328 is used to provide a damping force during the relative sliding of the second transmission arm 326 and the second fixed frame 322, the second fixed frame 322 is used to connect the second shell 2 of the folding device 10, in the process that the first fixed frame 321 drives the first shell 1 to rotate relative to the central axis 31, and the second fixed frame 322 drives the second shell 2 to rotate relative to the central axis 31, the first damping member 327 and the second damping member 328 provide a certain damping force, so that the user can experience a better sense of mechanism operation.

[0166] Please refer again Fig.14 and Fig.15 The second end 382 of the third rotating arm 38 can be installed on the central axis 31 to be rotatably connected to the central axis 31 through the virtual axis structure; the first end 381 of the third rotating arm 38 can be located outside the central axis 31. The second end 392 of the fourth rotating arm 39 can be installed on the central axis 31 to be rotatably connected to the central axis 31 through the virtual axis structure; the first end 391 of the fourth rotating arm 39 can be located outside the central axis 31.

[0167] The third rotating arm 38 and the fourth rotating arm 39 can be rotatably connected to the central axis 31 through a virtual axis structure. The rotation center of the third rotating arm 38 relative to the central axis 31 and the rotation center of the first rotating arm 323 relative to the central axis 31 are staggered, and the rotation center of the fourth rotating arm 39 relative to the central axis 31 and the rotation center of the second rotating arm 325 relative to the central axis 31 are staggered.

[0168] Please refer to Figure 22 to Figure 24 , Fig. 22 yes Figure 5 The structural schematic diagram of the folding assembly 3 is shown, Fig.23 yes Fig. 22 The schematic diagram of the structure of the folding assembly 3 at another angle is shown. Fig.24 yes Fig. 22 The schematic diagram of the structure of the folding assembly 3 is shown in the closed state.

[0169] In some embodiments, the first end 381 of the third rotating arm 38 can be rotatably connected to the first shielding plate 34 through a physical shaft structure. In this case, one end of the third rotating arm 38 is rotatably connected to the central shaft 31, and the first shielding plate 34 is rotatably connected to the other end of the third rotating arm 38. The first end 391 of the fourth rotating arm 39 can be rotatably connected to the second shielding plate 35 through a physical shaft structure. In this case, one end of the fourth rotating arm 39 is rotatably connected to the central shaft 31, and the second shielding plate 35 is rotatably connected to the other end of the fourth rotating arm 39.

[0170] The first shielding plate 34 is slidably connected to the first fixing frame 321, and the second shielding plate 35 is slidably connected to the second fixing frame 322. The sliding connection structure between the first shielding plate 34 and the first fixing frame 321 and / or the sliding connection structure between the second shielding plate 35 and the second fixing frame 322 may adopt a matching structure of a slide groove and a slider, which is not strictly limited in the embodiment of the present application.

[0171] In this embodiment, the first shielding plate 34 is rotatably connected to the central axis 31 and slidably connected to the first fixed frame 321 through the first rotating arm 323, and the second shielding plate 35 is rotatably connected to the central axis 31 and slidably connected to the second fixed frame 322 through the second rotating arm 325. During the rotation of the first fixed frame 321 and the second fixed frame 322 relative to the central axis 31, the first shielding plate 34 and the second shielding plate 35 also rotate relative to the central axis 31.

[0172] Among them, Fig. 22 and Fig.23 As shown, when the folding device 10 is in the open state, the first shielding plate 34 shields at least part of the gap between the first fixing frame 321 and the central axis 31, and the second shielding plate 35 shields at least part of the gap between the second fixing frame 322 and the central axis 31. Therefore, the first shielding plate 34 and the second shielding plate 35 can shield part of the gap of the folding assembly 10, which is conducive to the self-shielding of the gap of the folding assembly 10 when the folding assembly 10 is in the open state, and improves the reliability of the folding assembly 10.

[0173] The above description is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, such as reducing or adding structural parts, changing the shape of structural parts, etc., which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electronic device (100), It is characterized in that It comprises a folding device (10) and a flexible display screen (20); The folding device (10) comprises a first shell (1), a second shell (2) and a folding assembly (3); the folding assembly (3) connects the first shell (1) and the second shell (2); through the movement of the folding assembly (3), the first shell (1) and the second shell (2) can be relatively unfolded to an open state or relatively folded to a closed state; The flexible display screen (20) comprises a first non-bending portion (201), a bending portion (202) and a second non-bending portion (203) which are arranged in sequence, the first non-bending portion (201) being fixed to the first shell (1), the second non-bending portion (203) being fixed to the second shell (2), and the bending portion (202) being deformed during the process of the first shell (1) and the second shell (2) being relatively unfolded or relatively folded; The folding assembly (3) comprises a central axis (31), a first fixing frame (321), a first rotating arm (323), a first elastic member (36), a second fixing frame (322), a second rotating arm (325) and a second elastic member (37); The first fixing frame (321) is fixedly connected to the first shell (1), and the second fixing frame (322) is fixedly connected to the second shell (2); The first rotating arm (323) comprises a first end (323a) and a second end (323b), the first end (323a) of the first rotating arm (323) is rotatably connected to the central axis (31), the first fixing frame (321) comprises a first arc-shaped groove 321a, the second end (323b) of the first rotating arm (323) is an arc-shaped arm and is installed in the first arc-shaped groove (321a) to be rotatably connected to the first fixing frame (321), the first elastic member (36) is installed on the first fixing frame (321), one end of the first elastic member (36) close to the central axis (31) contacts the second end (323b) of the first rotating arm (323), and one end of the first elastic member (36) away from the central axis (31) contacts the first fixing frame (321); The second rotating arm (325) comprises a first end (325a) and a second end (325b), the first end (325a) of the second rotating arm (325) is rotatably connected to the central axis (31), the second fixing frame (322) comprises a second arc-shaped groove (322a), the second end (325b) of the second rotating arm (325) is an arc-shaped arm and is installed in the second arc-shaped groove (322a) to be rotatably connected to the second fixing frame (322), the second elastic member (37) is installed on the second fixing frame (322), one end of the second elastic member (37) close to the central axis (31) contacts the second end (325b) of the second rotating arm (325), and one end of the second elastic member (37) away from the central axis (31) contacts the second fixing frame (322); When the first shell (1) and the second shell (2) are in an open state, the first elastic member (36) and the second elastic member (37) are in a compressed state; Wherein, the first fixing frame (321) further comprises a first containing groove (321b) and a first communicating port (321c), and the first communicating port (321c) communicates the first containing groove (321b) with the first arc-shaped groove (321a); The first elastic member (36) comprises a first elastic body (361) and a first bracket (362); The first bracket (362) comprises a first bottom plate (3621) and a first matching block (3622) protruding from one side of the first bottom plate (3621); the first elastic body (361) is located on the side of the first bottom plate (3621) facing away from the first matching block (3622); the first matching block (3622) comprises a top surface (3622a), a transition surface (3622b) and a connecting surface (3622c) connected in sequence; the top surface (3622a) faces away from the first bottom plate (3621) and is spaced apart from the first bottom plate (3621); the transition surface (3622b) is a curved surface or a free-form surface; the connecting surface (3622c) bends and extends in a direction close to the first bottom plate (3621); the connecting surface (3622c) is a curved surface or a free-form surface; The first bottom plate (3621) and the first elastic body (361) are located in the first receiving groove (321b), the first elastic body (361) contacts the groove wall of the first receiving groove (321b), and the first matching block (3622) is at least partially located in the first communicating port (321c); The second end (323b) of the first rotating arm (323) comprises a first arc-shaped body (3231) and a first abutting block (3232); the first abutting block (3232) is convexly arranged on the outer arc surface of the first arc-shaped body (3231); the first abutting block (3232) is located at the first communicating port (321c) and abuts against the first matching block (3622); the wall surface of the first communicating port (321c) limits the first abutting block (3232); When the first shell (1) and the second shell (2) are in an open state, the first abutting block (3232) contacts the top surface (3622a) or the transition surface (3622b); when the first shell (1) and the second shell (2) are in a closed state, the first abutting block (3232) contacts the connecting surface (3622c).

2. The electronic device (100) according to claim 1, It is characterized in that When the first shell (1) and the second shell (2) are in a closed state, the first elastic member (36) and the second elastic member (37) are in a compressed state.

3. The electronic device (100) according to claim 1 or 2, It is characterized in that The central axis (31) comprises a third arc-shaped groove (313) and a fourth arc-shaped groove (314), and the third arc-shaped groove (313) and the fourth arc-shaped groove (314) extend to two sides of the central axis (31) respectively; The first end (323a) of the first rotating arm (323) is an arc-shaped arm and is installed in the third arc-shaped groove (313), and the first end (325a) of the second rotating arm (325) is an arc-shaped arm and is installed in the fourth arc-shaped groove (314).

4. The electronic device (100) according to claim 1 or 2, It is characterized in that The folding assembly (3) further comprises a first transmission arm (324) and a second transmission arm (326); The first transmission arm (324) comprises a rotating end (324a) and a sliding end (324b), the rotating end (324a) of the first transmission arm (324) is rotatably connected to the central axis (31), and the sliding end (324b) of the first transmission arm (324) is slidably connected to the first fixing frame (321); The second transmission arm (326) comprises a rotating end (326a) and a sliding end (326b), wherein the rotating end (326a) of the second transmission arm (326) is rotationally connected to the central axis (31), and the sliding end (326b) of the second transmission arm (326) is slidingly connected to the second fixing frame (322).

5. The electronic device (100) according to claim 4, It is characterized in that The folding assembly (3) further comprises a first damping member (327), wherein the first damping member (327) is mounted on a sliding end (324b) of the first transmission arm (324); The first fixing frame (321) further comprises a first slide groove (321d) and a first recessed area (321e) and a second recessed area (321f) connected to the first slide groove (321d), wherein the first recessed area (321e) is located on a side of the second recessed area (321f) close to the central axis (31), and the first fixing frame (321) further comprises a first top block (321g) located between the first recessed area (321e) and the second recessed area (321f); The sliding end (324b) of the first transmission arm (324) is installed in the first sliding groove (321d); when the first shell (1) and the second shell (2) are in an open state, the first damping member (327) is partially inserted into the first recessed area (321e); when the first shell (1) and the second shell (2) are in a closed state, the first damping member (327) passes over the first top block (321g) and is partially inserted into the second recessed area (321f).

6. The electronic device (100) according to claim 4, It is characterized in that The folding assembly (3) further comprises a plurality of synchronous gears (329), wherein the plurality of synchronous gears (329) mesh with the rotating end (324a) of the first transmission arm (324) and the rotating end (326a) of the second transmission arm (326).

7. A folding assembly (3), It is characterized in that It comprises a central axis (31), a first fixing frame (321), a first rotating arm (323), a first elastic member (36), a second fixing frame (322), a second rotating arm (325) and a second elastic member (37); The first rotating arm (323) comprises a first end (323a) and a second end (323b), the first end (323a) of the first rotating arm (323) is rotatably connected to the central axis (31), the first fixing frame (321) comprises a first arc-shaped groove 321a, the second end (323b) of the first rotating arm (323) is an arc-shaped arm and is installed in the first arc-shaped groove (321a) to be rotatably connected to the first fixing frame (321), the first elastic member (36) is installed on the first fixing frame (321), one end of the first elastic member (36) close to the central axis (31) contacts the second end (323b) of the first rotating arm (323), and one end of the first elastic member (36) away from the central axis (31) contacts the first fixing frame (321); The second rotating arm (325) comprises a first end (325a) and a second end (325b), the first end (325a) of the second rotating arm (325) is rotatably connected to the central axis (31), the second fixing frame (322) comprises a second arc-shaped groove (322a), the second end (325b) of the second rotating arm (325) is an arc-shaped arm and is installed in the second arc-shaped groove (322a) to be rotatably connected to the second fixing frame (322), the second elastic member (37) is installed on the second fixing frame (322), one end of the second elastic member (37) close to the central axis (31) contacts the second end (325b) of the second rotating arm (325), and one end of the second elastic member (37) away from the central axis (31) contacts the second fixing frame (322); When the folding assembly (3) is in an open state, the first fixing frame (321) and the second fixing frame (322) are respectively located on both sides of the central axis (31), and the first elastic member (36) and the second elastic member (37) are in a compressed state; Wherein, the first fixing frame (321) further comprises a first containing groove (321b) and a first communicating port (321c), and the first communicating port (321c) communicates the first containing groove (321b) with the first arc-shaped groove (321a); The first elastic member (36) comprises a first elastic body (361) and a first bracket (362); The first bracket (362) comprises a first bottom plate (3621) and a first matching block (3622) protruding from one side of the first bottom plate (3621); the first elastic body (361) is located on the side of the first bottom plate (3621) facing away from the first matching block (3622); the first matching block (3622) comprises a top surface (3622a), a transition surface (3622b) and a connecting surface (3622c) connected in sequence; the top surface (3622a) faces away from the first bottom plate (3621) and is spaced apart from the first bottom plate (3621); the transition surface (3622b) is a curved surface or a free-form surface; the connecting surface (3622c) bends and extends in a direction close to the first bottom plate (3621); the connecting surface (3622c) is a curved surface or a free-form surface; The first bottom plate (3621) and the first elastic body (361) are located in the first receiving groove (321b), the first elastic body (361) contacts the groove wall of the first receiving groove (321b), and the first matching block (3622) is at least partially located in the first communicating port (321c); The second end (323b) of the first rotating arm (323) comprises a first arc-shaped body (3231) and a first abutting block (3232); the first abutting block (3232) is convexly arranged on the outer arc surface of the first arc-shaped body (3231); the first abutting block (3232) is located at the first communicating port (321c) and abuts against the first matching block (3622); the wall surface of the first communicating port (321c) limits the first abutting block (3232); When the folding component (3) is in an open state, the first abutting block (3232) contacts the top surface (3622a) or the transition surface (3622b); when the folding component (3) is in a closed state, the first abutting block (3232) contacts the connecting surface (3622c).

8. The folding assembly (3) according to claim 7, It is characterized in that When the folding assembly (3) is in a closed state, the first fixing frame (321) and the second fixing frame (322) are located on the same side of the central axis (31) and are arranged opposite to each other, and the first elastic member (36) and the second elastic member (37) are in a compressed state.

9. The folding assembly (3) according to claim 7 or 8, It is characterized in that The central axis (31) comprises a third arc-shaped groove (313) and a fourth arc-shaped groove (314), and the third arc-shaped groove (313) and the fourth arc-shaped groove (314) extend to two sides of the central axis (31) respectively; The first end (323a) of the first rotating arm (323) is an arc-shaped arm and is installed in the third arc-shaped groove (313), and the first end (325a) of the second rotating arm (325) is an arc-shaped arm and is installed in the fourth arc-shaped groove (314).

10. The folding assembly (3) according to claim 7 or 8, It is characterized in that The folding assembly (3) further comprises a first transmission arm (324) and a second transmission arm (326); The first transmission arm (324) comprises a rotating end (324a) and a sliding end (324b), the rotating end (324a) of the first transmission arm (324) is rotatably connected to the central axis (31), and the sliding end (324b) of the first transmission arm (324) is slidably connected to the first fixing frame (321); The second transmission arm (326) comprises a rotating end (326a) and a sliding end (326b), wherein the rotating end (326a) of the second transmission arm (326) is rotationally connected to the central axis (31), and the sliding end (326b) of the second transmission arm (326) is slidingly connected to the second fixing frame (322).

11. The folding assembly (3) according to claim 10, It is characterized in that The folding assembly (3) further comprises a first damping member (327), wherein the first damping member (327) is mounted on a sliding end (324b) of the first transmission arm (324); The first fixing frame (321) further comprises a first slide groove (321d) and a first recessed area (321e) and a second recessed area (321f) connected to the first slide groove (321d), wherein the first recessed area (321e) is located on a side of the second recessed area (321f) close to the central axis (31), and the first fixing frame (321) further comprises a first top block (321g) located between the first recessed area (321e) and the second recessed area (321f); The sliding end (324b) of the first transmission arm (324) is installed in the first sliding groove (321d); when the folding component (3) is in an open state, the first damping member (327) is partially inserted into the first recessed area (321e); when the folding component (3) is in a closed state, the first damping member (327) passes over the first top block (321g) and is partially inserted into the second recessed area (321f).

12. The folding assembly (3) according to claim 10, It is characterized in that The folding assembly (3) further comprises a plurality of synchronous gears (329), wherein the plurality of synchronous gears (329) mesh with the rotating end (324a) of the first transmission arm (324) and the rotating end (326a) of the second transmission arm (326).

13. A folding device (10), It is characterized in that It comprises a first shell (1), a second shell (2) and a folding assembly (3) according to any one of claims 7 to 12, wherein a first fixing frame (321) of the folding assembly (3) is fixedly connected to the first shell (1), and a second fixing frame (322) of the folding assembly (3) is fixedly connected to the second shell (2).

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