Rotating shaft mechanism and electronic equipment

Abstract

The invention provides a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism comprises a base and a rotating module, and the rotating module comprises two rotating assemblies arranged on the two opposite sides of the base correspondingly. Each rotating assembly comprises a swing arm, a shell fixing frame, a radial rotating arm and a supporting arm, the swing arm is rotationally connected with the base, the radial rotating arm is located between the swing arm and the shell fixing frame, the radial rotating arm is rotationally connected with the swing arm and the shell fixing frame, and the rotating axis of the radial rotating arm extends in the direction, facing or deviating from the base, of the shell fixing frame. The supporting arm is rotationally connected with the base and slidably connected with the shell fixing frame, and the axis of the supporting arm rotating around the base and the axis of the swing arm rotating around the base are parallel and do not coincide. And the supporting arm rotates around the base to drive the radial rotating arm to rotate, so that when the electronic equipment is in a closed state, the radial rotating arm avoids the foldable part of the flexible display screen. The size of the rotating shaft mechanism is small, and the flexible display screen can be prevented from being extruded or pulled in the folding and unfolding process of the rotating shaft mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of foldable electronic devices, and in particular to a hinge mechanism and electronic devices. Background Art

[0002] As flexible display technology matures, the display mode of electronic devices has undergone tremendous changes. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolutionary direction for future smart electronic devices.

[0003] Flexible display screens are key components in foldable electronic devices, and they have the characteristic of continuous foldability. The hinge mechanism is an important component for foldable electronic devices to realize the folding function. During the unfolding and closing of the foldable electronic device, the hinge mechanism can drive the flexible display screen to flatten or bend. Usually, when designing the hinge mechanism, in order to avoid the flexible display screen and avoid pulling or squeezing the flexible display screen during the folding of the electronic device, some components of the rotating components in the hinge mechanism need to be thinned, which results in poor structural strength of these components, thereby making the structural reliability of the entire hinge mechanism poor. Based on this, how to make the structure of the hinge mechanism more reliable while avoiding pulling or squeezing the flexible display screen has become a major problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present application provides a hinge mechanism and an electronic device to achieve a miniaturized design of the hinge mechanism and improve the structural reliability of a flexible display screen during the rotation of the hinge mechanism, thereby improving the structural reliability of the electronic device.

[0005] In the first aspect, the present application provides a hinge mechanism, which can be used for a foldable electronic device, and the hinge mechanism is arranged relative to the foldable part of the flexible display screen of the electronic device, and the electronic device is unfolded or closed by the hinge mechanism. When the hinge mechanism is specifically arranged, it may include a base and a rotating module. Among them, the rotating module includes a first rotating component and a second rotating component, and the first rotating component and the second rotating component are respectively arranged on opposite sides of the base. The first rotating component may include a first swing arm, a first shell fixing frame, a first radial swing arm and a first support arm. The first swing arm is rotatably connected to the base. The first support arm is rotatably connected to the base, and the first support arm is slidably connected to the first shell fixing frame along a first direction. The axis of rotation of the first support arm around the base and the axis of rotation of the first swing arm around the base are both parallel to the length direction of the base and do not overlap with each other, and the first direction is perpendicular to the length direction of the base. In addition, the first radial swing arm is located between the first swing arm and the first shell fixing frame, the first radial swing arm includes a first connecting portion, a second connecting portion and a first avoidance opening, the first avoidance opening is located between the first connecting portion and the second connecting portion, the side of the first radial swing arm facing away from the first avoidance opening is the first connecting surface, the first connecting portion is rotationally connected to the first swing arm, the second connecting portion is rotationally connected to the first shell fixing frame, and the rotation axis of the first radial swing arm extends along the first direction.

[0006] When the second rotating assembly is specifically configured, it may include a second swing arm, a second housing fixing frame, a second radial swing arm and a second support arm. The second swing arm is rotationally connected to the base, the second support arm is rotationally connected to the base, the second support arm is slidingly connected to the second housing fixing frame along the second direction, the axis of rotation of the second support arm around the base and the axis of rotation of the second swing arm around the base are both parallel to the length direction of the base and do not overlap each other, and the second direction is perpendicular to the length direction of the base. The second radial swing arm is located between the second swing arm and the second housing fixing frame, the second radial swing arm includes a third connecting portion, a fourth connecting portion and a second avoidance opening, the second avoidance opening is located between the third connecting portion and the fourth connecting portion, the side of the second radial swing arm that faces away from the second avoidance opening is the second connecting surface, the third connecting portion is rotationally connected to the second swing arm, the fourth connecting portion is rotationally connected to the second housing fixing frame, and the rotation axis of the second radial swing arm extends along the second direction.

[0007] In addition, in the hinge mechanism provided in the present application, the base includes an appearance shell facing away from the flexible display screen, and the appearance shell includes a first end and a second end opposite to each other, the first end is arranged toward the first shell fixing frame, and the second end is arranged toward the second shell fixing frame. Then, when the electronic device is in the unfolded state, the first end of the appearance shell is inserted into the first avoidance opening, and the second end of the appearance shell is inserted into the second avoidance opening. In the process of switching the electronic device from the unfolded state to the closed state, the first shell fixing frame slides relative to the first support arm in a direction away from the base, and the second shell fixing frame slides relative to the second support arm in a direction away from the base, the first support arm rotates around the base to drive the first radial rotary arm to rotate around the first direction, and the second support arm rotates around the base to drive the second radial rotary arm to rotate around the second direction, so that when the electronic device is in the closed state, the first connection surface of the first radial rotary arm does not face the flexible display screen, and the second connection surface of the second radial rotary arm does not face the flexible display screen.

[0008] In the existing hinge mechanism, since the first swing arm (second swing arm) is directly connected to the first shell fixing frame (second shell fixing frame) while being rotationally connected to the base, in order to enable the electronic device using the hinge mechanism to unfold to a flat state, it is necessary to open a avoidance opening on the first swing arm (second swing arm) to achieve the avoidance of the first swing arm (second swing arm) to the appearance shell. However, since the first swing arm (second swing arm) also needs to avoid interference with the flexible display screen when in the closed state, the thickness of the avoidance portion of the first swing arm (second swing arm) of the existing hinge mechanism, which is arranged opposite to the avoidance opening, can only be designed to be thinner to avoid the flexible display screen, which limits the overall thickness of the hinge mechanism. In other words, if it is desired to further reduce the thickness of the hinge mechanism, it is necessary to further weaken the thickness of the avoidance portion, which will cause the structural strength of this part of the first swing arm (second swing arm) to be too low, thereby making it difficult to ensure the structural reliability of the first swing arm (second swing arm).

[0009] The hinge mechanism provided by the present application, when the electronic device is in the unfolded state, the first avoidance opening (second avoidance opening) of the first radial arm (second radial arm) can avoid the appearance shell, and in the process of the electronic device rotating from the unfolded state to the closed state, the first shell fixing frame (second shell fixing frame) rotates around the base to drive the first radial arm (second radial arm), the first swing arm (second swing arm) and the first support arm (second support arm) to rotate around the base together, and the first support arm (second support arm) rotates around the base to drive the first radial arm (second radial arm) to rotate relative to the first swing arm (second swing arm) and the first shell fixing frame (second shell fixing frame), so that the first connection surface (second connection surface) of the first radial arm (second radial arm) rotates to the side away from the flexible display screen. Such a structural design allows the thickness of the part of the first radial arm (second radial arm) used to set the first connection surface (second connection surface) to be flexibly set or even thickened according to the strength requirements, and because this part will rotate in the direction away from the flexible display screen during the folding process, it will not interfere with the flexible display screen in the closed state. Therefore, the hinge mechanism provided in the present application can ensure the structural strength of the entire first radial hinge arm (second radial hinge arm) while achieving the first radial hinge arm (second radial hinge arm) avoiding the appearance shell and the flexible display screen, thereby being beneficial to improving the structural reliability of the hinge mechanism.

[0010] Furthermore, in the shaft mechanism provided by the present application, the first housing fixing frame (the second housing fixing frame) rotates around the base to drive the first swing arm (the second swing arm) to rotate around the base, which is a primary motion transmission, and its transmission accuracy is relatively high. In addition, since the first swing arm (the second swing arm) is connected to the first housing fixing frame (the second housing fixing frame) only through the first radial swing arm (the second radial swing arm), its structure is simple and occupies less space, which is conducive to realizing the miniaturization and thinness design of the shaft mechanism.

[0011] In addition, in the process of the electronic device changing from the unfolded state to the closed state, the first shell fixing frame and the second shell fixing frame move toward each other, and the first shell fixing frame rotates counterclockwise around the base to drive the first swing arm, the first radial swing arm and the first support arm to rotate counterclockwise around the base; the second shell fixing frame rotates clockwise around the base to drive the second swing arm, the second radial swing arm and the second support arm to rotate synchronously in the clockwise direction. In the process of the electronic device changing from the closed state to the unfolded state, the first shell fixing frame and the second shell fixing frame move in opposite directions, and the first shell fixing frame rotates clockwise around the base to drive the first swing arm, the first radial swing arm and the first support arm to rotate clockwise around the base; the second shell fixing frame rotates counterclockwise around the base to drive the second swing arm, the second radial swing arm and the second support arm to rotate synchronously in the counterclockwise direction. Thus, the folding and unfolding functions of the hinge mechanism can be realized.

[0012] Furthermore, since the axis of rotation of the first support arm (second support arm) around the base is parallel to and does not overlap the axis of rotation of the first swing arm (second swing arm) around the base, there is a phase difference in the process of the first swing arm (second swing arm) and the first support arm (second support arm) rotating relative to the base. In this way, during the folding and unfolding of the electronic device, the first support arm (second support arm) and the first shell fixing frame (second shell fixing frame) can slide relative to each other, which can make the first shell fixing frame and the second shell fixing frame move in a direction toward or away from the base, so that during the process of the first rotating assembly and the second rotating assembly rotating toward each other, the first shell fixing frame slides relative to the first support arm in a direction away from the rotation axis (base) of the first support arm, and the second shell fixing frame slides relative to the second support arm in a direction away from the rotation axis (base) of the second support arm, thereby increasing the extension length of the first rotating assembly and the second rotating assembly relative to the base. In addition, when the first rotating assembly and the second rotating assembly rotate in opposite directions, the first housing fixing frame will slide relative to the first support arm in the direction close to the rotation axis of the first support arm, and the second housing fixing frame will slide relative to the second support arm in the direction close to the rotation axis of the second support arm, thereby reducing the extension length of the first rotating assembly and the second rotating assembly relative to the base, thereby reducing the length of the hinge mechanism. In this way, when the hinge mechanism is in the closed state, the unfolded state, and the folded state, the extension length of the first rotating assembly and the second rotating assembly relative to the base can adapt to the state of the flexible display screen, avoiding pulling or squeezing of the flexible screen.

[0013] In addition, due to the above-mentioned phase difference during the rotation of the first swing arm (second swing arm) and the first support arm (second support arm) relative to the base, the first swing arm (second swing arm), the first radial swing arm (second radial swing arm) and the first shell fixing frame (second shell fixing frame) are fixed in relative positions along the first direction (second direction). Therefore, during the sliding of the first support arm (second support arm) relative to the first shell fixing frame (second shell fixing frame), there is also a relative displacement between the first support arm (second support arm) and the first radial swing arm (second radial swing arm), thereby enabling the first support arm (second support arm) to drive the first radial swing arm (second radial swing arm) to rotate around its rotation axis.

[0014] In a possible implementation of the present application, the first radial swing arm further includes a first avoidance portion, the first avoidance portion is located between the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion are connected through the first avoidance portion; the first avoidance portion is disposed opposite to the first avoidance opening, and the first connecting surface is the surface of the first avoidance portion that is away from the first avoidance opening. Since the first radial swing arm can rotate around its axis during the process of the electronic device changing from an unfolded state to a closed state, the first connecting surface can be prevented from facing the flexible display screen when the electronic device is in a closed state. Such a design allows the thickness of the first avoidance portion to be flexibly set or even thickened according to strength requirements, which is conducive to improving the structural reliability of the first radial swing arm, thereby improving the structural reliability of the hinge mechanism.

[0015] Similarly, the second radial swing arm also includes a second avoidance portion, the second avoidance portion is located between the third connection portion and the fourth connection portion, and the third connection portion and the fourth connection portion are connected through the second avoidance portion; the second avoidance portion is arranged opposite to the second avoidance opening, and the second connection surface is the surface of the second avoidance portion away from the second avoidance opening. Since the second radial swing arm can rotate around its axis during the process of the electronic device changing from the unfolded state to the closed state, the second connection surface can be prevented from facing the flexible display screen when the electronic device is in the closed state. Such a design allows the thickness of the second avoidance portion to be flexibly set or even thickened according to the strength requirements, which is conducive to improving the structural reliability of the second radial swing arm, thereby improving the structural reliability of the hinge mechanism.

[0016] In a possible implementation of the present application, when the first radial swing arm is rotatably connected to the first swing arm and the first housing fixing frame, the first connecting portion can be rotatably connected to the first swing arm through the first rotating shaft, the second connecting portion can be rotatably connected to the first housing fixing frame through the second rotating shaft, the axis of the first rotating shaft extends along the first direction, and the axis of the second rotating shaft extends along the first direction. In this way, the first radial swing arm is rotatably connected to the first swing arm and the first housing fixing frame, and the rotation axis of the first radial swing arm extends along the first direction.

[0017] In a possible implementation of the present application, the second connection portion may be provided with a first card slot, the first housing fixing frame may be provided with a first card connection portion, the first card connection portion is inserted into the first card slot, and the second rotating shaft is passed through the slot wall of the first card slot and the first card connection portion. In this way, the structure of the first rotating assembly can be more compact, which is conducive to reducing the size of the first rotating assembly, thereby facilitating the miniaturization design of the rotating shaft mechanism.

[0018] Similarly, the third connection portion of the second radial swing arm is rotationally connected to the second swing arm via the third rotation shaft, the fourth connection portion is rotationally connected to the second housing fixing frame via the fourth rotation shaft, the axis of the third rotation shaft extends along the second direction, and the axis of the fourth rotation shaft extends along the second direction, thereby realizing the rotation connection between the second radial swing arm and the second housing fixing frame, and making the rotation axis of the second radial swing arm extend along the first direction.

[0019] In addition, the fourth connection portion is provided with a second card slot, the second housing fixing frame is provided with a second card connection portion, the second card connection portion is inserted into the second card slot, and the fourth rotating shaft is passed through the slot wall of the second card slot and the second card connection portion. In this way, the structure of the second rotating assembly can be more compact, which is conducive to reducing the size of the second rotating assembly, thereby facilitating the miniaturization design of the rotating shaft mechanism.

[0020] In a possible implementation of the present application, the first radial swing arm further includes a first track groove, and the first support arm includes a first guide portion, and the first guide portion slides along the first track groove to drive the first radial swing arm to rotate relative to the first swing arm, so that when the electronic device is in the unfolded state, the first end is inserted into the first avoidance opening. In the present application, the first radial swing arm is driven to rotate relative to the first swing arm by the first guide portion of the first support arm sliding along the first track groove of the first radial swing arm, so that the structure of the first rotating assembly can be relatively simple while realizing the rotation of the first radial swing arm.

[0021] Similarly, the second radial swing arm further includes a second track groove, and the second support arm includes a second guide portion, and the second guide portion slides along the second track groove to drive the second radial swing arm to rotate relative to the second swing arm, so that when the electronic device is in the unfolded state, the second end is inserted into the second avoidance opening. In the present application, the second radial swing arm is driven to rotate relative to the second swing arm by the second guide portion of the second support arm sliding along the second track groove of the second radial swing arm, so that the structure of the second rotating assembly can be relatively simple while realizing the rotation of the second radial swing arm.

[0022] In the present application, the specific setting form of the first track groove is not limited. It can be exemplarily a spiral groove, so that when the first support arm slides in the first direction relative to the first shell fixing frame, it can drive the first radial swing arm to rotate relative to the first shell fixing frame and the first swing arm around the axis extending in the first direction.

[0023] In addition, the second track groove can also be set as a spiral groove, so that when the second support arm slides relative to the second shell fixing frame along the second direction, it can drive the second radial spiral arm to rotate relative to the second shell fixing frame and the second swing arm around the axis extending along the second direction.

[0024] In a possible implementation of the present application, the portion connected to the first connecting portion (third connecting portion) of the first radial spiral arm (second radial spiral arm) is also provided with a first avoidance surface (second avoidance surface). When the electronic device is in a closed state, the first avoidance surface (second avoidance surface) can avoid the foldable portion of the flexible display screen, so that the screen-holding space formed by the hinge mechanism in the closed state can be adapted to the shape of the foldable portion of the flexible display screen, which can avoid squeezing the flexible display screen, thereby helping to improve the structural reliability of the flexible display screen, and further improve the structural reliability of the electronic device.

[0025] That is to say, through the design of the hinge mechanism of the present application, the first radial spiral arm (second radial spiral arm) can be rotated during the folding process, so that the avoidance surface and the connecting surface are arranged on different surfaces of the first radial spiral arm (second radial spiral arm), avoiding insufficient strength caused by excessive thinning of the avoidance part, or avoiding interference of the avoidance part with the flexible display screen.

[0026] In a possible implementation of the present application, the first guide portion slides along the first track groove to drive the first radial swing arm to rotate relative to the first swing arm, so that when the electronic device is in a closed state, the first avoidance surface avoids the foldable part of the flexible display screen, thereby avoiding the first radial swing arm from squeezing the foldable part of the flexible display screen, which is beneficial to improving the structural reliability of the flexible display screen.

[0027] In addition, the second guide portion slides along the second track groove to drive the second radial swing arm to rotate relative to the second swing arm, so that when the electronic device is in a closed state, the second avoidance surface avoids the foldable part of the flexible display screen, thereby avoiding the second radial swing arm from squeezing the foldable part of the flexible display screen, which is beneficial to improving the structural reliability of the flexible display screen.

[0028] In a possible implementation of the present application, the first avoidance surface is an arc-shaped concave surface, and the second avoidance surface is an arc-shaped concave surface. Such a design can better achieve the avoidance of the foldable part of the flexible display screen. In addition, the shapes of the first avoidance surface and the second avoidance surface can be fitted according to the external shape of the foldable part of the flexible display screen when it is folded, so that when the electronic device is in a closed state, the shape of the screen-containing space formed by the hinge mechanism is better adapted to the foldable part of the flexible display screen, which is conducive to avoiding squeezing the foldable part of the flexible display screen, thereby improving the structural reliability of the flexible display screen.

[0029] In a possible implementation of the present application, the first swing arm and the base can be rotatably connected via a virtual axis. Specifically, the base can be provided with a first arc groove, and the first swing arm includes a first arc rotation block. The first arc rotation block is accommodated in the first arc groove, and the first arc rotation block can slide along the groove surface of the first arc groove to realize the rotation of the first swing arm relative to the base. The first swing arm and the base are rotatably connected via a virtual axis, so that the space of the base occupied by the first swing arm can be smaller, which is conducive to realizing the miniaturization design of the rotating shaft mechanism.

[0030] In addition, the base may also be provided with a second arc groove, and the second swing arm includes a second arc rotating block, and the second rotating block may be accommodated in the second arc groove, and the second arc rotating block may slide along the groove surface of the second arc groove to realize the rotation of the second swing arm relative to the base. In the present application, the second swing arm and the base may also be rotatably connected via a virtual axis, so that the space occupied by the second swing arm on the base is small, which is conducive to realizing the miniaturization design of the rotating shaft mechanism.

[0031] In a possible implementation of the present application, when the first support arm is slidably connected to the first housing fixing frame, the first housing fixing frame may be provided with a first slide groove, the first support arm is accommodated in the first slide groove, and the first support arm can slide in the first slide groove along the first direction. Similarly, the second housing fixing frame is provided with a second slide groove, the second support arm is accommodated in the second slide groove, and the second support arm can slide in the second slide groove along the second direction.

[0032] In a possible implementation of the present application, the first housing fixing frame may further include a first mounting groove, the groove wall of the first mounting groove is provided with a first notch, and the first mounting groove is connected with the first slide groove through the first notch. The rotating shaft mechanism also includes a first damping module, the first damping module includes a first elastic member and a first damping bracket, the first damping bracket includes a first protrusion, the first damping bracket is installed in the first mounting groove, and under the elastic force of the first elastic member, the first protrusion can slide along the first notch and extend into the first slide groove. The surface of the first support arm facing the first mounting groove is also provided with a second protrusion, when the first protrusion extends into the first slide groove, along the first direction, the first protrusion and the side opposite to the second protrusion abut against each other, and a damping force is generated between the first protrusion and the second protrusion, so that the first protrusion blocks the first support arm from continuing to slide along the first slide groove, thereby keeping the first housing fixing frame in the corresponding rotation position. In addition, during the rotation of the first rotating assembly relative to the base, due to the existence of the damping force between the first support arm and the first damping module, it can make the user have a more obvious sense of frustration in the process of opening and closing the electronic device, so as to improve the user experience.

[0033] In addition, the second housing fixing frame may further include a second mounting groove, the groove wall of the second mounting groove is provided with a second notch, and the second mounting groove is connected with the second slide groove through the second notch. The shaft mechanism also includes a second damping module, the second damping module includes a second elastic member and a second damping bracket, the second damping bracket includes a third protrusion, the second damping bracket is installed in the second mounting groove, and under the elastic force of the second elastic member, the third protrusion can slide along the second notch and extend into the second slide groove. The surface of the second support arm facing the second mounting groove is also provided with a fourth protrusion, when the third protrusion extends into the second slide groove, the third protrusion and the side opposite to the fourth protrusion abut against each other along the second direction. A damping force is generated between the third protrusion and the second four protrusions, so that the third protrusion blocks the second support arm from continuing to slide along the second slide groove, thereby keeping the second housing fixing frame in the corresponding rotation position. In addition, during the rotation of the second rotating assembly relative to the base, due to the existence of the damping force between the second support arm and the second damping module, it can make the user have a more obvious sense of frustration in the process of opening and closing the electronic device, so as to enhance the user experience.

[0034] In a possible implementation of the present application, the first support arm includes two oppositely arranged first connecting arms, the two first connecting arms are slidably connected to the first shell fixing frame, and the first damping module is located between the two first connecting arms, so that the structure of the first rotating assembly can be more compact, which is conducive to reducing the size of the first rotating assembly, so as to facilitate the miniaturization design of the rotating shaft mechanism.

[0035] Similarly, the second support arm may include two oppositely arranged second connecting arms, which are slidably connected to the second shell fixing frame, and the second damping module is located between the two second connecting arms, so that the structure of the second rotating assembly is more compact, which is conducive to reducing the size of the second rotating assembly, so as to facilitate the miniaturization design of the rotating shaft mechanism.

[0036] In a possible implementation of the present application, the first rotating assembly further includes a first support plate, the first support plate includes a first plate surface and a second plate surface disposed opposite to each other, the first plate surface is used to support the flexible display screen, the second plate surface is provided with a third track groove, the first support arm is provided with a first guide structure, the first guide structure is inserted in the third track groove, and the first guide structure can slide along the third track groove. In addition, the second rotating assembly further includes a second support plate, the second support plate includes a third plate surface and a fourth plate surface disposed opposite to each other, the third plate surface is used to support the flexible display screen, the fourth plate surface is provided with a fourth track groove, the second support arm is provided with a second guide structure, the second guide structure is inserted in the fourth track groove, and the second guide structure can slide along the fourth track groove. When the first shell fixing frame and the second shell fixing frame rotate toward each other, the first shell fixing frame drives the first support arm to rotate around the base, and the first guide structure slides along the third track groove to drive the first support plate to rotate relative to the first shell fixing frame, and drives the end of the first support plate close to the base to move in a direction away from the base. The second shell fixing frame drives the second support arm and the second swing arm to rotate around the base, and the second guide structure slides along the third track groove to drive the second support plate to rotate relative to the second shell fixing frame, and drives the end of the second support plate close to the base to move in a direction away from the base, so that a screen-holding space for accommodating the bendable part of the flexible display screen can be formed between the first support plate, the base and the second support plate.

[0037] In addition, the first shell fixing frame also includes a fifth track groove, the first rotating assembly also includes a third support plate, the third support plate includes a first sliding portion and a first support arm, the first sliding portion is inserted into the fifth track groove, the first shell fixing frame rotates around the base to drive the third support plate to rotate around the base, and the first sliding portion slides along the fifth track groove. The first support plate also includes a third slide groove, and the first support portion can slide along the third slide groove. The first support portion includes a fifth board surface. When the electronic device is in a closed state, the third support plate avoids the first swing arm. When the electronic device is in an unfolded state, the third support plate is located on the side of the first swing arm facing the flexible display screen, and the first board surface and the fifth board surface are connected to form a support surface for supporting the flexible display screen, which is conducive to improving the integrity of the support surface of the hinge mechanism for supporting the flexible display screen, thereby achieving flat support for the flexible display screen.

[0038] Similarly, the second shell fixing frame also includes a sixth track groove, the second rotating assembly also includes a fourth support plate, the fourth support plate includes a second sliding portion and a second support portion, the second sliding portion is inserted into the sixth track groove, the second shell fixing frame rotates around the base to drive the fourth support plate to rotate around the base, and the second sliding portion slides along the sixth track groove. The second support plate also includes a fourth slide groove, the second support portion can slide along the fourth slide groove, and the second support portion includes a sixth panel surface for supporting the flexible display screen. When the electronic device is in a closed state, the fourth support plate avoids the second swing arm. When the electronic device is in an unfolded state, the fourth support plate is located on the side of the second swing arm facing the flexible display screen, and the third panel surface and the sixth panel surface are connected to form a support surface for supporting the flexible display screen, which is conducive to improving the integrity of the support surface of the hinge mechanism for supporting the flexible display screen, thereby achieving flat support for the flexible display screen.

[0039] In the present application, the specific setting form of the fifth track groove and the third slide groove is not limited. For example, the fifth track groove is a linear groove, and the third slide groove is a linear groove. Then the first sliding part can slide in the fifth track groove relative to the first shell fixing frame along the third direction, and the first support part can slide in the third slide groove relative to the first support plate along the fourth direction. When the electronic device is in a closed state, the angle between the third direction and the fourth direction is greater than 0°, so that the first shell fixing frame and the first support plate limit the movement of the third support plate in the direction toward the base, thereby preventing the third support plate from falling off.

[0040] In addition, the sixth track groove may be a linear groove, and the fourth slide groove may also be a linear groove. The second sliding portion may slide in the sixth track groove relative to the second housing fixing frame along the fifth direction, and the second supporting portion may slide in the fourth slide groove relative to the second supporting plate along the sixth direction. When the electronic device is in a closed state, the angle between the fifth direction and the sixth direction is greater than 0°, so that the second housing fixing frame and the second supporting plate limit the movement of the fourth supporting plate in the direction toward the base, thereby preventing the fourth supporting plate from falling off.

[0041] In a possible implementation of the present application, the third support plate may further include a first abutment portion, and when the electronic device is in a closed state, the first abutment portion abuts against the first housing fixing frame, and the first housing fixing frame provides a supporting force for the first abutment portion in a direction away from the base. Thus, the third support arm can be prevented from falling off in the closed state, thereby improving the structural reliability of the first rotating assembly, and further improving the structural reliability of the rotating shaft mechanism.

[0042] Similarly, the fourth support plate also includes a second abutment portion, and when the electronic device is in a closed state, the second abutment portion abuts against the second housing fixing frame, and the second housing fixing frame provides a supporting force for the second abutment portion in a direction away from the base, thereby preventing the fourth support arm from falling off in the closed state, thereby improving the structural reliability of the second rotating assembly, and further improving the structural reliability of the rotating shaft mechanism.

[0043] In a possible implementation of the present application, the base may further include a bearing surface, which can be used to support the flexible display screen, and when the electronic device is in a closed state, the bearing surface, the first supporting surface and the third supporting surface can form a supporting surface for supporting the flexible display screen, so as to enhance the integrity of the supporting surface of the hinge mechanism for supporting the flexible display screen, thereby achieving flat support for the flexible display screen.

[0044] In a second aspect, the present application further provides an electronic device, which includes a first shell, a second shell and a hinge mechanism of the first aspect. The first shell and the second shell are arranged on opposite sides of the hinge mechanism, the first shell fixing frame is fixedly connected to the first shell, and the second shell fixing frame is fixedly connected to the second shell. The flexible display screen continuously covers the first shell, the second shell and the hinge mechanism, and the flexible display screen is fixedly connected to the first shell and the second shell. When the electronic device is in the unfolded state, the hinge mechanism, the first shell and the second shell jointly play the role of flattening the flexible display screen, thereby ensuring the integrity of the shape of the electronic device in the unfolded state. In the process of the electronic device changing from the unfolded state to the closed state, the two shells rotate towards each other to drive the flexible display screen to rotate, which can effectively avoid deformation of the flexible display screen to reduce the risk of damage to the flexible display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of a structure of an electronic device in a closed state provided by an embodiment of the present application;

[0046] Figure 2 A schematic diagram of a structure of an electronic device in an unfolded state provided by an embodiment of the present application;

[0047] Figure 3 A schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application;

[0048] Figure 4 An exploded view of the shaft mechanism provided in an embodiment of the present application;

[0049] Figure 5 A schematic diagram of the structure of a first swing arm provided in an embodiment of the present application;

[0050] Figure 6 A schematic diagram of the structure of a base provided in an embodiment of the present application;

[0051] Figure 7 A schematic diagram of the structure of a first housing fixing frame provided in an embodiment of the present application;

[0052] Figure 8 A schematic diagram of the structure of the first radial rotary arm provided in an embodiment of the present application when the electronic device is in an unfolded state;

[0053] Fig. 9 A top view of the hinge mechanism provided in an embodiment of the present application when the electronic device is in an unfolded state;

[0054] Fig.10 for Fig. 9 A cross-sectional view of the rotating shaft mechanism at AA;

[0055] Fig.11 for Fig.10 A schematic diagram of the structure of the rotating shaft mechanism shown in the electronic device being in an intermediate state;

[0056] Fig.12 for Fig.10 A schematic diagram of the structure of the rotating shaft mechanism shown in the electronic device being in a closed state;

[0057] Fig.13 for Fig.12 A schematic structural diagram of a first radial rotary arm of the rotating shaft mechanism shown in ;

[0058] Fig.14 A schematic diagram of a matching relationship between a first radial spiral arm and a first support arm provided in an embodiment of the present application;

[0059] Fig.15a A schematic diagram of a partial structure of a rotating shaft mechanism provided in an embodiment of the present application;

[0060] Fig.15b Another partial structural schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application;

[0061] Fig.15c Another partial structural schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application;

[0062] Fig.16 A schematic structural diagram of a first damping module provided in an embodiment of the present application;

[0063] Fig.17 Another cross-sectional view of the hinge mechanism provided in an embodiment of the present application when the electronic device is in a closed state;

[0064] Fig.18 Another cross-sectional view of the hinge mechanism provided in an embodiment of the present application when the electronic device is in a closed state;

[0065] Fig.19a Another cross-sectional view of the hinge mechanism provided in an embodiment of the present application when the electronic device is in a closed state;

[0066] Fig.19b Another cross-sectional view of the hinge mechanism provided in an embodiment of the present application when the electronic device is in a closed state;

[0067] Fig. 20 for Fig.19a Schematic diagram of the structure of the rotating shaft mechanism when the electronic device is in the unfolded state.

[0068] Reference numerals:

[0069] 1-shaft mechanism; 101-base; 1011-first arc groove; 1012-second arc groove; 1013-appearance shell;

[0070] 10131-first end; 10132-second end; 10133-appearance surface; 1014-bearing surface;

[0071] 102-rotation module;

[0072] 1021-first rotating assembly; 10211-first swing arm; 102111-first arc-shaped rotating block; 102112-first mounting hole;

[0073] 102113-first rotating shaft; 10212-first radial rotary arm; 102121-first connecting portion; 102122-second connecting portion;

[0074] 1021221-first card slot; 102123-first avoidance opening; 102124-first avoidance surface; 102125-first track groove;

[0075] 102126-first avoidance portion; 1021261-first connecting surface;

[0076] 10213-first housing fixing frame; 102131-first clamping portion; 1021311-second rotating shaft; 102132-first sliding groove;

[0077] 102133-first installation groove; 1021331-first notch; 1021332-first limiting column; 102134-first rotation groove;

[0078] 102135 - fifth track groove; 10214 - first support arm;

[0079] 102141-first guide portion; 102142-first connecting arm; 1021421-second protrusion; 102143-first guide structure;

[0080] 10215-first damping module; 102151-first elastic member; 102152-first damping bracket; 1021521-first protrusion;

[0081] 1021522-first limiting part;

[0082] 10216-first support plate; 102161-first plate surface; 102162-second plate surface; 102163-first rotating part;

[0083] 102164-first guide member; 1021641-third track groove; 102165-third slide groove;

[0084] 10217-third support plate; 102171-first sliding portion; 102172-first support portion; 1021721-fifth plate surface;

[0085] 102173-first abutment portion;

[0086] 1022-second rotating assembly; 10221-second swing arm; 102211-second arc-shaped rotating block; 102212-third mounting hole;

[0087] 102213-third rotating shaft; 10222-second radial rotary arm; 102221-third connecting portion; 102222-fourth connecting portion;

[0088] 1022221-second card slot; 102223-second avoidance opening; 102224-second avoidance surface; 102225-second track groove;

[0089] 102226- second avoidance portion; 1022261- second connection surface;

[0090] 10223-second housing fixing frame; 102231-second clamping portion; 1022311-fourth rotating shaft; 102232-second sliding groove;

[0091] 102233-second mounting groove; 1022331-second notch; 1022332-second limiting column; 102234-second rotation groove;

[0092] 102235-sixth track groove; 10224-second support arm; 102241-second guide portion; 102242-second connecting arm;

[0093] 1022421- fourth protrusion; 102243- second guide structure;

[0094] 10225-second damping module; 102251-second elastic member; 102252-second damping bracket; 1022521-third protrusion;

[0095] 1022522-second limiting part;

[0096] 10226- second support plate; 102261- third plate surface; 102262- fourth plate surface; 102263- second rotating part;

[0097] 102264- second guide member; 1022641- fourth track groove; 102265- fourth slide groove;

[0098] 10227- fourth support plate; 102271- second sliding portion; 102272- second support portion; 1022721- sixth plate surface;

[0099] 102273-second abutment portion;

[0100] 2-first shell; 3-second shell; 4-flexible display screen; 5-screen storage space. DETAILED DESCRIPTION

[0101] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "described", "above", "the" and "this" are intended to also include, for example, "one or more" such expressions, unless there is clearly an opposite indication in the context.

[0102] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0103] In order to facilitate understanding of the hinge mechanism and electronic device provided in the embodiment of the present application, the following first describes its application scenario. The hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptop computers, or tablet computers. When the hinge mechanism provided in the embodiment of the present application is applied to electronic devices, reference can be made to Figure 1 , Figure 1 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. Figure 1 In the embodiment shown, the electronic device is in a closed state. In addition to the hinge mechanism 1, the electronic device may also include two housings and a flexible display screen ( Figure 1 For the convenience of explanation, in the present application, the two shells of the electronic device may be named as the first shell 2 and the second shell 3. The first shell 2 and the second shell 3 are located on both sides of the hinge mechanism 1 and can rotate around the hinge mechanism 1. The electronic device provided in the present application may be an inward folding electronic device, which can be closed and unfolded according to different usage scenarios when in use.

[0104] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a structure of an electronic device in an unfolded state. Figure 2 It can be seen that in the unfolded state, the first shell 2 and the second shell 3 are still located on both sides of the hinge mechanism 1, and the first shell 2 and the second shell 3 can support the flexible display screen 4 to keep the flexible display screen 4 in a flat state.

[0105] It is understandable that electronic devices are Figure 2 The expanded state shown to Figure 1 The closed state process shown, or by Figure 1 The closed state shown to Figure 2 The process of the unfolded state shown is the process of the first shell 2 and the second shell 3 rotating around the hinge mechanism 1, and in the above process, the first shell 2 and the second shell 3 can drive the flexible display screen 4 to fold or unfold accordingly. The hinge mechanism 1 is a key functional component in the foldable electronic device, which can be set corresponding to the foldable part of the flexible display screen 4. Therefore, the hinge mechanism 1 is in the state of the electronic device. Figure 2 The support of the foldable part of the flexible display screen 4 in the unfolded state shown, and the support of the foldable part of the flexible display screen 4 in the unfolded state shown Figure 1 The closed state shown plays an important role in accommodating the foldable part of the flexible display screen 4. If the space formed by the first shell 2, the second shell 3 and the hinge mechanism 1 cannot meet the folding requirements of the flexible display screen 4 when the electronic device is in the closed state; or, when the electronic device is in the unfolded state, the extension length of the support surface provided by the first shell 2, the second shell 3 and the hinge mechanism 1 does not match the unfolded length of the flexible display screen 4, the flexible display screen 4 may be squeezed or pulled, which is easy to cause damage to the flexible display screen 4 after the electronic device is folded multiple times.

[0106] In addition, when some of the current hinge mechanisms 1 are specifically designed, in order to avoid the flexible display screen 4 and avoid pulling or squeezing the flexible display screen 4 during the folding process of the electronic device, some components of the rotating assembly of the hinge mechanism 1 are designed to be thinner, which results in poor structural strength of these components, thereby making the structural reliability of the entire hinge mechanism 1 poor.

[0107] The hinge mechanism 1 provided in the present application is intended to solve the above-mentioned problems, so that the components of the hinge mechanism 1 can meet the strength requirements, and in the process of the first shell 2 and the second shell 3 of the electronic device rotating around the hinge mechanism 1, the components of the hinge mechanism 1 can always avoid the foldable part of the flexible display screen 4, and the screen space formed by the first shell 2, the second shell 3 and the hinge mechanism 1 when the electronic device is in a closed state can meet the folding requirements of the flexible display screen 4, and the extension length of the support surface formed by the first shell 2, the second shell 3 and the hinge mechanism 1 in the unfolded state can be adapted to the unfolded length of the flexible display screen 4, so as to avoid deformation of the flexible display screen 4, reduce the compression or pulling stress on the flexible display screen 4, so as to extend the service life of the flexible display screen 4 and improve the reliability of the electronic device. To facilitate the understanding of the hinge mechanism 1 provided in the embodiment of the present application, its specific structure is described in detail below in conjunction with the accompanying drawings.

[0108] First, refer to Figure 3 , Figure 3 Schematic diagram of the structure of the rotating shaft mechanism 1 provided in the embodiment of the present application. In the present application, the rotating shaft mechanism 1 may include a base 101 and a rotating module 102. The number of rotating modules 102 in the rotating shaft mechanism 1 is not limited in the present application. The rotating shaft mechanism 1 may include only one rotating module 102 or may include multiple rotating modules 102. When the rotating shaft mechanism 1 includes multiple rotating modules 102, the multiple rotating modules 102 may be arranged at intervals along the axial direction of the rotating shaft mechanism 1. In the present application, the axial direction of the rotating shaft mechanism 1 is Figure 2 The first shell 2 and the second shell 3 shown in the figure extend in the direction of the axis of rotation of the hinge mechanism 1. It can be understood that the first shell 2 and the second shell 3 are rotatably connected through a plurality of rotating modules 102, which can effectively improve the stability of the first shell 2 and the second shell 3 of the electronic device rotating relative to the hinge mechanism 1.

[0109] In the present application, the rotating module 102 includes a first rotating component 1021 and a second rotating component 1022. The first rotating component 1021 and the second rotating component 1022 are located on opposite sides of the base 101, and the first rotating component 1021 and the second rotating component 1022 are rotatably connected to the base 101. In the present application, the process of the electronic device using the hinge mechanism 1 from the unfolded state to the closed state is the process of the first rotating component 1021 and the second rotating component 1022 rotating around the base 101 in opposite directions; and the process of the electronic device from the closed state to the unfolded state is the process of the first rotating component 1021 and the second rotating component 1022 rotating around the base 101 in opposite directions.

[0110] In order to facilitate understanding of the structure of the rotating module 102, refer to Figure 4 , Figure 4 Exploded view of the rotating shaft mechanism 1 provided in an embodiment of the present application. The first rotating assembly 1021 may include a first swing arm 10211, and the first swing arm 10211 is rotatably connected to the base 101. The first swing arm 10211 and the base 101 may be rotatably connected by a virtual axis, which is beneficial to reduce the space occupied by the first swing arm 10211 on the base 101, thereby reducing the volume of the rotating module 102, so as to realize the miniaturized design of the rotating shaft mechanism 1.

[0111] It is worth mentioning that in the present application, the virtual axis refers to the axis of an arc-shaped structure, and the two rotatably connected parts can rotate relative to the virtual axis, and the position of the virtual axis is fixed as the two rotatably connected parts rotate relative to each other. Figure 5 , Figure 5 A structural diagram of the first swing arm 10211 provided in an embodiment of the present application. Figure 4 and Figure 5 , the end of the first swing arm 10211 facing the base 101 may be provided with a first arc-shaped rotating block 102111. Figure 6 , Figure 6 A schematic diagram of the structure of the base 101 provided in an embodiment of the present application, in the present application, the base 101 may be provided with a first arcuate groove 1011. The first arcuate rotating block 102111 may be accommodated in the first arcuate groove 1011, and the first arcuate rotating block 102111 may slide along the groove surface of the first arcuate groove 1011, so that the first swing arm 10211 is rotated around the base 101 by sliding the first arcuate rotating block 102111 along the groove surface of the first arcuate groove 1011.

[0112] In the present application, the first arc-shaped rotating block 102111 may be, but not limited to, a circular arc-shaped rotating block, and the first arc-shaped groove 1011 may be, but not limited to, a circular arc-shaped groove. It is understandable that when the first arc-shaped rotating block 102111 is a circular arc-shaped rotating block, its surface for contacting the groove surface of the first arc-shaped groove 1011 may be a circular arc surface, and the groove surface of the first arc-shaped groove 1011 is also a circular arc surface, and the centers of the two circular arc surfaces coincide.

[0113] It is worth mentioning that in some possible embodiments of the present application, the first swing arm 10211 and the base 101 can also be rotatably connected via a solid shaft, thereby improving the reliability of the rotational connection between the first swing arm 10211 and the base 101, and further improving the structural reliability of the rotating shaft mechanism 1.

[0114] You can continue to refer to Figure 4 The first rotating assembly 1021 may further include a first radial rotating arm 10212 and a first housing fixing frame 10213, wherein the first radial rotating arm 10212 is located between the first swing arm 10211 and the first housing fixing frame 10213, the first radial rotating arm 10212 is rotationally connected to the first swing arm 10211, and the first radial rotating arm 10212 is rotationally connected to the first housing fixing frame 10213. In a specific implementation, the first radial rotating arm 10212 includes a first connecting portion 102121 and a second connecting portion 102122, wherein the first connecting portion 102121 is rotationally connected to the first swing arm 10211, and the second connecting portion 102122 is rotationally connected to the first housing fixing frame 10213.

[0115] Refer to Figure 4 and Figure 5 In the present application, the first connecting portion 102121 of the first radial rotary arm 10212 can be rotatably connected to the first swing arm 10211 through the first rotating shaft 102113, and the axis of the first rotating shaft 102113 extends along the first direction. Figure 4 and Figure 7 , Figure 7 A schematic diagram of the structure of the first shell fixing frame 10213 provided in an embodiment of the present application. The second connecting portion 102122 can be rotatably connected to the first shell fixing frame 10213 through the second rotating shaft 1021311, and the axis of the second rotating shaft 1021311 extends along the first direction. Then the rotation axis of the first radial swing arm 10212 extends along the first direction. Among them, the first direction is perpendicular to the length direction of the base 101, which can also be understood as the direction in which the first shell fixing frame 10213 moves toward or away from the base 101.

[0116] In addition, in the embodiment of the present application, along the first direction, the relative positions of the first swing arm 10211, the first radial swing arm 10212 and the first housing fixing frame 10213 are fixed. Figure 5 The first swing arm 10211 may be provided with a first mounting hole 102112. Figure 4 The first connecting portion 102121 of the first radial rotary arm 10212 shown in FIG. 1 may be provided with a second mounting hole ( Figure 4 (not shown), the first rotating shaft 102113 can be simultaneously penetrated through the first mounting hole 102112 and the second mounting hole. In order to fix the relative positions of the first swing arm 10211 and the first radial swing arm 10212 in the first direction, a stopper can be provided at each of the two ends of the first rotating shaft 102113. Thus, while limiting the first swing arm 10211 and the first radial swing arm 10212 in the first direction, the first radial swing arm 10212 can also be rotated relative to the first swing arm 10211. In the present application, the specific structures of the two stoppers are not limited, and they can be exemplarily a snap ring, or the first rotating shaft 102113 can be provided as a rivet, and the rivet can be riveted to the first swing arm 10211. In this case, it is only necessary to provide a snap ring at the end of the first rotating shaft 102113 that passes through the first connecting portion 102121. In some other possible embodiments of the present application, the first swing arm 10211 and the first radial swing arm 10212 may also adopt other possible methods to achieve limitation in the first direction, which will not be introduced one by one here.

[0117] When the first radial rotary arm 10212 is connected to the first housing fixing frame 10213, as shown in FIG. Figure 4 As shown, the second connecting portion 102122 of the first radial spiral arm 10212 may be provided with a first slot 1021221. Figure 7As shown, the first housing fixing frame 10213 is provided with a first clamping portion 102131, and the first clamping portion 102131 can be inserted into the first clamping slot 1021221. The second rotating shaft 1021311 can be simultaneously penetrated through the slot wall of the first clamping slot 1021221 and the first clamping portion 102131, so that the first radial rotary arm 10212 and the first housing fixing frame 10213 can be limited in the first direction, and the first radial rotary arm 10212 can also be rotated relative to the first housing fixing frame 10213. In some other possible embodiments of the present application, other possible methods can also be used to achieve the limitation of the first radial swing arm 10212 and the first shell fixing frame 10213 along the first direction. For example, a stop portion can be set at the two ends of the second rotating shaft 1021311 respectively with reference to the connection method between the first radial swing arm 10212 and the first swing arm 10211, so as to achieve the limitation of the first swing arm 10211 and the first radial swing arm 10212 in the first direction.

[0118] In a possible embodiment of the present application, the first radial swing arm 10212 can also be rotatably connected to the first shell fixing frame 10213 and the first swing arm 10211 through the same rotating shaft to simplify the structure of the first rotating assembly 1021 and help improve the consistency of the rotation of the first swing arm 10211, the first radial swing arm 10212 and the first shell fixing frame 10213 around the base 101.

[0119] From the above description of the connection relationship between the first swing arm 10211, the first radial swing arm 10212 and the first housing fixing frame 10213, it can be known that the relative positions of the three in the first direction are fixed, and the first housing fixing frame 10213 can drive the first radial swing arm 10212 and the first swing arm 10211 to rotate around the base 101, and the three have the same motion trajectory when rotating around the base 101. It can be seen that the movement of the first swing arm 10211 driven by the first housing fixing frame 10213 around the base 101 is a primary motion transmission, and its transmission accuracy is relatively high. In addition, since the first swing arm 10211 and the first housing fixing frame 10213 are connected only through the first radial swing arm 10212, its structure is relatively simple and occupies less space, which can be conducive to realizing the miniaturization and lightness of the rotating shaft mechanism 1.

[0120] It is worth mentioning that Figure 4As shown, when the shaft mechanism 1 includes a plurality of rotating modules 102, two first rotating components 1021 of two adjacent rotating modules 102 may share a first swing arm 10211, and one first swing arm 10211 may be provided with two first arc-shaped rotating blocks 102111, and one first swing arm 10211 may be rotatably connected to two first radial rotating arms 10212. This is conducive to simplifying the structure of the shaft mechanism 1 and making the structure of the shaft mechanism 1 more compact.

[0121] like Figure 4 As shown, the first rotating assembly 1021 may further include a first supporting arm 10214, the first supporting arm 10214 is rotatably connected to the base 101, and the axis of rotation of the first supporting arm 10214 around the base 101 and the axis of rotation of the first swing arm 10211 around the base 101 are both parallel to the length direction of the base 101 and do not overlap each other. Figure 4 In the illustrated embodiment, the first support arm 10214 may be rotatably connected to the base 101 via a pin shaft, so as to improve the reliability of the rotatable connection between the first support arm 10214 and the base 101 .

[0122] You can continue to refer to Figure 4 , the first support arm 10214 is slidably connected to the first housing fixing frame 10213 along a first direction. Figure 7 As shown, the first housing fixing frame 10213 is provided with a first slide groove 102132, the first support arm 10214 is accommodated in the first slide groove 102132, and the first support arm 10214 can slide along the first direction in the first slide groove 102132. In addition, in order to improve the reliability of the sliding connection between the first support arm 10214 and the first housing fixing frame 10213, a first slideway can be provided in the first slide groove 102132, and a first slider can be provided on the first support arm 10214, so that the first slider can be clamped in the first slideway, so that the first support arm 10214 can be limited to the first housing fixing frame 10213, and the first slideway can also guide the sliding of the first support arm 10214 along the first housing fixing frame 10213.

[0123] In the present application, the second rotating assembly 1022 can be configured with reference to the first rotating assembly 1021. Figure 4 The second rotating assembly 1022 may include a second swing arm 10221, and the structure of the second swing arm 10221 may also be Figure 5 Indicates that the second swing arm 10221 is provided with a second arc-shaped rotating block 102211 at one end facing the base 101. Figure 6As shown, the base 101 is provided with a second arc groove 1012, and the second arc rotation 102211 can be accommodated in the second arc groove 1012, and the second arc rotation block 102211 can slide along the groove surface of the second arc groove 1012, so that the second swing arm 10221 is rotatably connected with the base 101 by sliding the second arc rotation block 102211 along the arc surface of the second arc groove 1012.

[0124] In the present application, the second arc-shaped rotating block 102211 may be, but not limited to, a circular arc-shaped rotating block, and the second arc-shaped groove 1012 may be, but not limited to, a circular arc-shaped groove. It is understandable that when the second arc-shaped rotating block 102211 is a circular arc-shaped rotating block, its surface for contacting the groove surface of the second arc-shaped groove 1012 may be a circular arc surface, and the groove surface of the second arc-shaped groove 1012 is also a circular arc surface, and the centers of the two circular arc surfaces coincide.

[0125] It is worth mentioning that in some possible embodiments of the present application, the second swing arm 10221 and the base 101 can also be rotatably connected via a solid shaft, thereby improving the reliability of the rotational connection between the second swing arm 10221 and the base 101, and further improving the structural reliability of the rotating shaft mechanism 1.

[0126] In addition, if Figure 4 As shown, the second rotating assembly 1022 may further include a second radial rotating arm 10222 and a second housing fixing frame 10223, the second radial rotating arm 10222 is located between the second swing arm 10221 and the second housing fixing frame 10223, the second radial rotating arm 10222 includes a third connecting portion 102221 and a fourth connecting portion 102222, wherein the third connecting portion 102221 is rotationally connected to the second swing arm 10221, and the fourth connecting portion 102222 is rotationally connected to the second housing fixing frame 10223. When implementing the invention, please refer to Figure 4 and Figure 5 The third connecting portion 102221 of the second radial rotary arm 10222 is rotatably connected to the second swing arm 10221 via the third rotating shaft 102213, and the axis of the third rotating shaft 102213 extends along the second direction. Figure 4 and Figure 7 The fourth connecting portion 102222 is rotationally connected to the second housing fixing frame 10223 via the fourth rotating shaft 1022311, and the axis of the fourth rotating shaft 1022311 extends along the second direction. Then the rotation axis of the second radial rotary arm 10222 extends along the second direction. The second direction is perpendicular to the length direction of the base, which can also be understood as the direction in which the second housing fixing frame 10223 moves toward or away from the base 101.

[0127] In the embodiment of the present application, along the second direction, the relative positions of the second swing arm 10221, the second radial swing arm 10222 and the second shell fixing frame 10223 are fixed. Among them, the method for fixing the relative positions of the second swing arm 10221 and the second radial swing arm 10222 in the second direction can be set with reference to the method for fixing the relative positions of the first swing arm 10211 and the first radial swing arm 10212 in the first direction. In short, the third rotating shaft 102213 can be simultaneously passed through the third mounting hole 102212 on the second swing arm 10221 and the fourth mounting hole of the third connecting portion 102221 of the second radial swing arm 10222, and a stop portion is respectively provided at the two ends of the third rotating shaft 102213. The method for fixing the relative positions of the second radial swing arm 10222 and the second shell fixing frame 10223 in the second direction can be set with reference to the method for fixing the relative positions of the first radial swing arm 10212 and the first shell fixing frame 10213 in the first direction. In short, as Figure 4 As shown, the fourth connecting portion 102222 may be provided with a second slot 1022221. Figure 7 As shown, the second shell fixing frame 10223 is provided with a second clamping portion 102231 , the second clamping portion 102231 is inserted into the second clamping slot 1022221 , and the fourth rotating shaft 1022311 passes through the slot wall of the second clamping slot 1022221 and the second clamping portion 102231 .

[0128] In a possible embodiment of the present application, the second radial swing arm 10222 can also be rotatably connected to the second shell fixing frame 10223 and the second swing arm 10221 through the same rotating shaft to simplify the structure of the second rotating assembly 1022 and help improve the consistency of the rotation of the second swing arm 10221, the second radial swing arm 10222 and the second shell fixing frame 10223 around the base 101.

[0129] Since the relative positions of the second swing arm 10221, the second radial swing arm 10222 and the second housing fixing frame 10223 in the second direction are fixed, the second swing arm 10221 can drive the second radial swing arm 10222 and the second housing fixing frame 10223 to rotate around the base 101 together when rotating around the base 101, and the motion trajectories of the three rotating around the base 101 are the same. It can be seen that the movement of the second swing arm 10221 driving the second housing fixing frame 10223 around the base 101 is a first-level motion transmission, and its transmission accuracy is relatively high. In addition, since the second swing arm 10221 and the second housing fixing frame 10223 are connected only through the second radial swing arm 10222, its structure is relatively simple and occupies less space, which can be conducive to realizing the miniaturization and lightweight design of the rotating shaft mechanism 1.

[0130] In the present application, the second rotating assembly 1022 may further include a second supporting arm 10224, the second supporting arm 10224 is rotatably connected to the base 101, and the axis of rotation of the second supporting arm 10224 around the base 101 and the axis of rotation of the second swing arm 10221 around the base 101 are both parallel to the length direction of the base 101 and do not overlap with each other. Figure 4 In the illustrated embodiment, the second support arm 10224 may be rotatably connected to the base 101 via a pin shaft, so as to improve the reliability of the rotatable connection between the second support arm 10224 and the base 101 .

[0131] In addition, the second support arm 10224 is slidably connected to the second housing fixing frame 10223. Figure 7 As shown, the second housing fixing frame 10223 is provided with a second slide groove 102232, the second support arm 10224 is accommodated in the second slide groove 102232, and the second support arm 10224 can slide along the second direction in the second slide groove 102232. In the present application, in order to improve the reliability of the sliding connection between the second support arm 10224 and the second housing fixing frame 10223, a second slideway can be provided in the second slide groove 102232, and a second slider can be provided on the second support arm 10224, so that the second slider can be clamped in the second slideway, so that the second support arm 10224 can be limited to the second housing fixing frame 10223, and the second slideway can also guide the sliding of the second support arm 10224 along the second housing fixing frame 10223.

[0132] From the above introduction, it can be known that the axis of rotation of the first support arm 10214 around the base 101 is parallel to but not coincident with the axis of rotation of the first swing arm 10211 around the base 101, and the axis of rotation of the second support arm 10224 around the base 101 is parallel to but not coincident with the axis of rotation of the second swing arm 10221 around the base 101. Therefore, there is a phase difference in the process of rotation of the first swing arm 10211 and the first support arm 10214 relative to the base 101, and there is a phase difference in the process of rotation of the second swing arm 10221 and the second support arm 10224 relative to the base 101. In this way, during the folding and unfolding of the electronic device, the first support arm 10214 and the first shell fixing frame 10213 can slide relative to each other, and the second support arm 10224 and the second shell fixing frame 10223 can slide relative to each other, which can make the first shell fixing frame 10213 and the second shell fixing frame 10223 move in a direction toward or away from the base 101, so that during the process of the first rotating assembly 1021 and the second rotating assembly 1022 rotating toward each other, the first shell fixing frame 10213 can slide relative to the first support arm 1021. 4 slides in a direction away from the rotation axis (base 101) of the first support arm 10214, and the second shell fixing frame 10223 slides relative to the second support arm 10224 in a direction away from the rotation axis (base 101) of the second support arm 10224, so that the extension length of the first rotating component 1021 and the second rotating component 1022 relative to the base 101 is increased, and a screen-accommodating space that meets the bending requirement of the foldable part of the flexible display screen can be formed between the first rotating component 1021, the second rotating component 1022 and the base 101. In addition, during the process of the first rotating component 1021 and the second rotating component 1022 rotating in opposite directions, the first shell fixing frame 10213 will slide relative to the first support arm 10214 in the direction close to the rotation axis of the first support arm 10214, and the second shell fixing frame 10223 will slide relative to the second support arm 10224 in the direction close to the rotation axis of the second support arm 10224, thereby reducing the extension length of the first rotating component 1021 and the second rotating component 1022 relative to the base 101, thereby reducing the length of the hinge mechanism. In this way, when the hinge mechanism is in a closed state, an unfolded state, and a folded state, the extension length of the first rotating component 1021 and the second rotating component 1022 relative to the base 101 can adapt to the state of the flexible display screen, thereby avoiding pulling or squeezing of the flexible display screen 4, which is beneficial to improving the structural reliability of the flexible display screen 4 and reducing the risk of damage thereof.

[0133] In the embodiment of the present application, since the first swing arm 10211 is rotatably connected to the base 101, and the first swing arm 10211 is connected to the first housing fixing frame 10213 via the first radial swing arm 10212, when the electronic device is in the unfolded state, in order to avoid the first radial swing arm 10212 from interfering with the base 101, the first radial swing arm 10212 may be designed to avoid interference. Figure 8 , Figure 8 The first radial arm 10212 provided in the embodiment of the present application is a schematic diagram of the structure of the electronic device in the unfolded state. The first radial arm 10212 also includes a first avoidance opening 102123, and the first avoidance opening 102123 is located between the first connecting portion 102121 and the second connecting portion 102122.

[0134] In addition, refer to Fig. 9 and Fig.10 , Fig. 9 This is a top view of the hinge mechanism 1 provided in an embodiment of the present application when the electronic device is in an unfolded state. Fig.10 for Fig. 9 The cross-sectional view of the rotating shaft mechanism 1 at AA is shown. Fig.10 It can be seen that the base 101 further includes an appearance shell 1013, which is arranged away from the flexible display screen. In addition, the appearance shell 1013 includes a first end 10131 and a second end 10132, wherein the first end 10131 is arranged toward the first shell fixing frame 10213, and the second end 10132 is arranged toward the second shell fixing frame 10223. In the present application, the appearance shell 1013 may also include an appearance surface 10133, which is arranged away from the flexible display screen, and during the rotation of the hinge mechanism 1, the appearance surface 10133 is always located outside the hinge mechanism 1.

[0135] You can continue to refer to Fig.10 When the electronic device is in the unfolded state, the first end 10131 of the appearance shell 1013 can be inserted into the first avoidance opening 102123. It can be understood that the opening shape of the first avoidance opening 102123 can be set according to the shape of the first end 10131 of the appearance shell 1013, so that the first radial rotary arm 10212 can avoid the first end 10131 of the appearance shell 1013, and the rotating shaft mechanism 1 can also have a relatively complete appearance surface, which is conducive to improving the appearance of the electronic device.

[0136] You can continue to refer to Fig.10The second radial arm 10222 further includes a second avoidance opening 102223, and the second avoidance opening 102223 is located between the third connection portion 102221 and the fourth connection portion 102222. In addition, the second end 10132 of the appearance shell 1013 can be inserted into the second avoidance opening 102223. The opening shape of the second avoidance opening 102223 can be set according to the shape of the second end 10132 of the appearance shell 1013, so that the second radial arm 10222 can avoid the second end 10132 of the appearance shell 1013, and the hinge mechanism 1 can also have a relatively complete appearance surface, which is conducive to improving the appearance of the electronic device.

[0137] It is worth mentioning that in the present application, by opening a first avoidance opening 102123 on the first radial swing arm 10212 and a second avoidance opening 102223 on the second radial swing arm 10222, it is possible to avoid interference between the first radial swing arm 10212 and the second radial swing arm 10222 and the outer shell 1013 of the base 101, and at the same time, the wall thickness of the portion of the first radial swing arm 10212 that is arranged opposite to the first avoidance opening 102123 can be increased in a direction away from the first avoidance opening 102123, and the wall thickness of the portion of the second radial swing arm 10222 that is arranged opposite to the second avoidance opening 102223 can be increased in a direction away from the second avoidance opening 102223, thereby increasing the structural reliability of the first radial swing arm 10212 and the second radial swing arm 10222, so that the structural strength of the first radial swing arm 10212 and the second radial swing arm 10222 meets the requirements, which is beneficial to improving the structural reliability of the rotating shaft mechanism 1.

[0138] When implementing it, please continue to refer to Fig.10 The first radial spiral arm 10212 may further include a first avoidance portion 102126, wherein the first avoidance portion 102126 is located between the first connection portion 102121 and the second connection portion 102122, and the first connection portion 102121 and the second connection portion 102122 are connected via the first avoidance portion 102126; the first avoidance portion 102126 is disposed opposite to the first avoidance opening 102123, and in the present application, the surface of the first avoidance portion 102126 that is away from the first avoidance opening 102123 may be defined as a first connecting surface 1021261. Similarly, the second radial spiral arm 10222 may also include a second avoidance portion 102226, which is located between the third connection portion 102221 and the fourth connection portion 102222, and the third connection portion 102221 and the fourth connection portion 102222 are connected via the second avoidance portion 102226; the second avoidance portion 102226 is disposed opposite to the second avoidance opening 102223, and in the present application, the surface of the second avoidance portion 102226 that is away from the second avoidance opening 102223 may be defined as a second connection surface 1022261.

[0139] Reference Fig.11 , Fig.11 for Fig.10 The structure diagram of the rotating shaft mechanism 1 shown in FIG. 1 is a schematic diagram of the electronic device in an intermediate state. The intermediate state of the electronic device is any state in the process from the unfolded state to the closed state, or from the closed state to the unfolded state. By comparison Fig.10 and Fig.11 It can be seen that electronic equipment is Fig.10 The expanded state shown to Fig.11 During the intermediate state shown, the first end 10131 of the appearance shell 1013 can slide out from the first avoidance opening 102123 of the first radial spiral arm 10212, and the second end 10132 of the appearance shell 1013 can slide out from the second avoidance opening 102223 of the second radial spiral arm 10222. In this process, the first radial spiral arm 10212 and the second radial spiral arm 10222 can also avoid interference with the appearance shell 1013 of the base 101.

[0140] In addition, please refer to Fig.12 , Fig.12 for Fig.10 The structure diagram of the rotating shaft mechanism 1 shown in FIG. 1 is a schematic diagram of the structure of the electronic device in a closed state. By comparing Fig.10 and Fig.12 It can be seen that in the process of the electronic device changing from the unfolded state to the closed state, the relative position relationship between the first avoidance opening 102123 of the first radial swing arm 10212 and the first shell fixing frame 10213 changes, and the relative position relationship between the second avoidance opening 102223 of the second radial swing arm 10222 and the second shell fixing frame 10223 changes. In this process, the first radial swing arm 10212 rotates relative to the first shell fixing frame 10213, and the second radial swing arm 10222 rotates relative to the second shell fixing frame 10223. In this process, the first connecting surface 1021261 of the first radial swing arm 10212 and the second connecting surface 1022261 of the second radial swing arm 10222 both rotate toward the side away from the flexible display screen.

[0141] By the above Figures 10 to 12It can be understood from the analysis that the hinge mechanism provided by the present application, in the process of the electronic device rotating from the unfolded state to the closed state, the first support arm 10214 rotates around the base to drive the first radial rotary arm 10212 to rotate around its axis relative to the first swing arm 10211 and the first shell fixing frame 10213, and the second support arm 10224 rotates around the base to drive the second radial rotary arm 10222 to rotate around its axis relative to the second swing arm 10221 and the second shell fixing frame 10223, so that the first connection surface of the first radial rotary arm 10212 and the second connection surface of the second radial rotary arm 10222 both rotate toward the side away from the flexible display screen. Such a structural design allows the thickness of the first avoidance portion 102126 of the first radial rotary arm 10212 and the second avoidance portion 102226 of the second radial rotary arm 10222 to be flexibly set or even thickened according to the strength requirements. Furthermore, because the first avoidance portion 102126 and the second avoidance portion 102226 rotate in a direction away from the flexible display screen during the folding process of the electronic device, the first avoidance portion 102126 and the second avoidance portion 102226 can be effectively prevented from interfering with the flexible display screen when the electronic device is in a closed state. Therefore, the hinge mechanism provided by the present application can ensure the structural strength of the entire first radial arm 10212 and the second radial arm 10222 while achieving the avoidance of the first radial arm 10212 and the second radial arm 10222 to the appearance shell and the flexible display screen, thereby facilitating the improvement of the structural reliability of the hinge mechanism.

[0142] Reference Fig.13 , Fig.13 for Fig.12 The structural schematic diagram of the first radial arm 10212 of the hinge mechanism 1 shown in the figure is used to show the state of the first radial arm 10212 when the electronic device is in a closed state. In the present application, when the electronic device is in a closed state, in order to enable the hinge mechanism 1 to form a screen-accommodating space that meets the bending requirements of the flexible display screen 4, the first radial arm 10212 may also be provided with a first avoidance surface 102124. In addition, when the electronic device is in a closed state, the first avoidance surface 102124 is arranged toward the folding inner side of the hinge mechanism 1, so that the first avoidance surface 102124 avoids the foldable part of the flexible display screen. Fig.12 and Fig.13 The first avoidance surface 102124 can be provided on the first connection portion 102121, and the first avoidance surface 102124 can be an arc-shaped concave surface. In the present application, the specific shape of the first avoidance surface 102124 is not limited, and it can be specifically set according to the bending shape of the foldable part of the flexible display screen 4.

[0143] When the electronic device is in a closed state, in order to enable the hinge mechanism 1 to form a symmetrical screen space 5 for accommodating the foldable part of the flexible display screen 4, as shown in FIG. Fig.12 As shown, the second radial spiral arm 10222 may also be provided with a second avoidance surface 102224, which may be provided at the third connecting portion 102221, and the second avoidance surface 102224 may be an arc-shaped concave surface. In addition, the second avoidance surface 102224 is provided toward the folding inner side of the hinge mechanism 1, and when the electronic device is in a closed state, the first avoidance surface 102124 and the second avoidance surface 102224 may be provided opposite to each other, and the first avoidance surface 102124 and the second avoidance surface 102224 may avoid the foldable part of the flexible display screen 4. This may be beneficial to improving the force uniformity of the flexible display screen 4, thereby improving the structural reliability of the flexible display screen 4.

[0144] You can continue to refer to Fig.12 In the embodiment of the present application, when the electronic device is in a closed state, the surface of the first swing arm 10211 facing the inner side of the folding of the hinge mechanism 1 may also be an arc-shaped concave surface, and the arc-shaped concave surface of the first swing arm 10211 and the first avoidance surface 102124 may be connected to form a smooth avoidance surface. The surface of the second swing arm 10221 facing the inner side of the folding of the hinge mechanism 1 may also be an arc-shaped concave surface, and the arc-shaped concave surface of the second swing arm 10221 and the second avoidance surface 102224 may be connected to form a smooth avoidance surface. Thus, when the electronic device is in a closed state, it is helpful to increase the screen space formed by the hinge mechanism 1, which can reduce the risk of squeezing the foldable part of the flexible display screen 4.

[0145] In the hinge mechanism provided in the present application, by setting the first avoidance opening 102123, the first connecting surface 1021261 and the first avoidance surface 102124 to face three different directions respectively, and setting the second avoidance opening 102223, the second connecting surface 1022261 and the second avoidance surface 102224 to face three different directions respectively, the first avoidance opening 102123 and the second avoidance opening 102223 can avoid the appearance shell when the electronic device is in the unfolded state. In the folding process of the electronic device from the unfolded state to the closed state, the first connecting surface 1021261 and the second connecting surface 1022261 can be rotated in the direction away from the flexible display screen, thereby avoiding the first avoidance portion 102126 and the second avoidance portion 102226 from interfering with the flexible display screen. In addition, when the electronic device is in the closed state, the first avoidance surface 102124 and the second avoidance surface 102224 can face the foldable part of the flexible display screen to avoid the foldable part of the flexible display screen. Such a design can achieve the avoidance of the hinge mechanism to the appearance shell and the flexible display screen, and can also ensure the structural strength of the hinge mechanism without increasing its size, thereby making the hinge mechanism both light and reliable.

[0146] As can be seen from the above description, since there is a phase difference between the first support arm 10214 and the first swing arm 10211, and there is a phase difference between the second support arm 10224 and the second swing arm 10221, during the folding process of the electronic device, the first support arm 10214 can slide relative to the first housing fixing frame 10213, and the second support arm 10224 can slide relative to the second housing fixing frame 10223. In addition, since the relative positions of the first swing arm 10211, the first radial swing arm 10212 and the first housing fixing frame 10213 are fixed along the first direction, the first support arm 10214 moves relative to the first radial swing arm 10212 while sliding relative to the first housing fixing frame 10213. Similarly, since the relative positions of the second swing arm 10221, the second radial swing arm 10222, and the second housing fixing frame 10223 are fixed along the second direction, the second support arm 10224 also moves relative to the second radial swing arm 10222 while sliding relative to the second housing fixing frame 10223. Based on this, in the embodiment of the present application, the first radial swing arm 10212 can be driven to rotate relative to the first swing arm 10211 and the first housing fixing frame 10213 by the sliding of the first support arm 10214 relative to the first housing fixing frame 10213. And the second radial swing arm 10222 can be driven to rotate relative to the second swing arm 10221 and the second housing fixing frame 10223 by the sliding of the second support arm 10224 relative to the second housing fixing frame 10223.

[0147] For specific implementation, please refer to Fig.14 , Fig.14A schematic diagram of a matching relationship between the first radial rotary arm 10212 and the first support arm 10214 provided in an embodiment of the present application. The first radial rotary arm 10212 is provided with a first track groove 102125, and the first support arm 10214 is provided with a first guide portion 102141, which can be inserted into the first track groove 102125. When the first support arm 10214 slides along the first housing fixing frame 10213, the first guide portion 102141 can slide along the first track groove 102125.

[0148] Reference Fig.15a , Fig.15a This is a partial structural diagram of the rotating shaft mechanism 1 provided in an embodiment of the present application, which can be used to show the relative position relationship between the first support arm 10214, the first radial rotating arm 10212 and the base 101 when the electronic device is in the unfolded state. Fig.10 As shown, the first avoidance opening 102123 of the first radial spiral arm 10212 avoids the first end 10131 of the appearance shell 1013 of the base 101.

[0149] Reference Fig.15b , Fig.15b This is another partial structural diagram of the rotating shaft mechanism 1 provided in the embodiment of the present application, which can be used to show the relative position relationship between the first support arm 10214, the first radial rotating arm 10212 and the base 101 when the electronic device is in the middle state. Fig.15a and Fig.15b It can be seen that in the process of the electronic device changing from the unfolded state to the closed state, the first guide portion 102141 of the first support arm 10214 slides toward the base 101 relative to the first track groove 102125, thereby driving the first radial rotary arm 10212 to rotate at a set angle relative to the first swing arm 10211 and the first shell fixing frame 10213.

[0150] In addition, refer to Fig.15c , Fig.15c Another partial structural diagram of the hinge mechanism 1 provided in an embodiment of the present application can be used to show the relative positional relationship between the first support arm 10214, the first radial arm 10212 and the base 101 when the electronic device is in a closed state. At this time, the first avoidance surface 102124 of the first radial arm 10212 faces the folded inner side of the hinge mechanism 1, so that the first radial arm 10212 can avoid the foldable part of the flexible display screen, which can avoid squeezing the foldable part of the flexible display screen 4.

[0151] It is understandable that, in the present application, the shape of the first track groove 102125 can be fitted according to the track of the first swing arm 10211 and the first support arm 10214 rotating around the base 101 and the phase difference during the rotation of the first swing arm 10211 and the first support arm 10214. For example, the first track groove 102125 is a spiral groove. In this way, the first guide portion 102141 slides along the first track groove 102125 to drive the first radial arm 10212 to rotate relative to the first swing arm 10211, so that when the electronic device is in the unfolded state, the first end 10131 of the appearance shell 1013 is inserted into the first avoidance opening 102123; and when the electronic device is in the closed state, the first avoidance surface 102124 of the first radial arm 10212 can avoid the foldable part of the flexible display screen.

[0152] In the embodiment of the present application, the matching relationship between the second radial spiral arm 10222 and the second support arm 10224 is similar to the matching relationship between the first radial spiral arm 10212 and the first support arm 10214. Fig.14 , Fig.14 It can also be used to demonstrate the matching relationship between the second radial swing arm 10222 and the second support arm 10224, wherein the second radial swing arm 10222 is provided with a second track groove 102225, and the second support arm 10224 is provided with a second guide portion 102241, and the second guide portion 102241 can be inserted into the second track groove 102225. Then, when the second support arm 10224 slides along the second shell fixing frame 10223, the second guide portion 102241 can slide along the second track groove 102225.

[0153] In addition, in the present application, the shape of the second track groove 102225 can be fitted according to the track of the second swing arm 10221 and the second support arm 10224 rotating around the base 101 and the phase difference during the rotation of the second swing arm 10221 and the second support arm 10224. For example, the second track groove 102225 is a spiral groove. In this way, the second guide portion 102241 slides along the second track groove 102225 to drive the second radial arm 10222 to rotate relative to the second swing arm 10221, so that when the electronic device is in the unfolded state, the second end 10132 of the appearance shell 1013 is inserted into the second avoidance opening 102223 of the second radial arm 10222, so as to achieve the avoidance of the second radial arm 10222 to the base 101. In the process of the electronic device changing from the unfolded state to the closed state, the second guide portion 102241 of the second support arm 10224 slides relative to the second track groove 102225 toward the base 101, thereby driving the second radial rotary arm 10222 to rotate at a set angle relative to the second swing arm 10221 and the second housing fixing frame 10223. When the electronic device is in the closed state, the second avoidance surface 102224 of the second radial rotary arm 10222 can avoid the foldable part of the flexible display screen, so that the second radial rotary arm 10222 makes room for the screen space 5, which can avoid squeezing the foldable part of the flexible display screen.

[0154] It is understandable that when the electronic device moves from a closed state to an expanded state, the movement direction of each structure is opposite to the movement direction of the electronic device from an expanded state to a closed state in the above text, which will not be described in detail here.

[0155] You can continue to refer to Figure 4 In the present application, the first rotating assembly 1021 may further include a first damping module 10215. Figure 7 The first housing fixing frame 10213 further includes a first mounting groove 102133, the first damping module 10215 is mounted in the first mounting groove 102133, and a first notch 1021331 is formed in the groove wall of the first mounting groove 102133. In addition, the first mounting groove 102133 can be arranged adjacent to the first slide groove 102132, and the first slide groove 102132 and the first mounting groove 102133 can be connected through the first notch 1021331.

[0156] When specifically setting the first damping module 10215, please refer to Fig.16 , Fig.16A schematic diagram of the structure of the first damping module 10215 provided in an embodiment of the present application. The first damping module 10215 may include a first elastic member 102151 and a first damping bracket 102152. The first elastic member 102151 may be, but is not limited to, a spring, and the first damping bracket 102152 includes a first protrusion 1021521, which is referred to as Figure 7 and Fig.16 The first elastic member 102151 can press the first damping bracket 102152 toward the groove wall of the first mounting groove 102133, and under the elastic force of the first elastic member 102151, the first protrusion 1021521 of the first damping bracket 102152 can slide along the first notch 1021331 and extend into the first sliding groove 102132.

[0157] It can be understood that, in the present application, when the first elastic member 102151 is a spring, Figure 7 As shown, a first limiting column 1021332 may be further provided in the first installation groove 102133, and the spring may be sleeved on the first limiting column 1021332, which may effectively prevent the first elastic member 102151 from bending when the first elastic member 102151 squeezes the first damping bracket 102152, and may effectively improve the structural reliability of the first damping module 10215. In addition, the first damping bracket 102152 may also include two first limiting portions 1021522, the extension direction of the two first limiting portions 1021522 is the same as the direction of action of the elastic force of the first elastic member 102151, and the first elastic member 102151 may be located between the two first limiting portions 1021522, so that under the action of the two first limiting portions 1021522, the risk of the first elastic member 102151 bending is further reduced, thereby improving the structural reliability of the first damping module 10215.

[0158] As can be seen from the foregoing, the first support arm 10214 can slide along the first slide groove 102132, so in this application, reference can be made to Figure 7 and Fig.14, the surface of the first support arm 10214 facing the first installation groove 102133 may be provided with a second protrusion 1021421. In this way, when the first protrusion 1021521 extends into the first slide groove 102132, in the first direction, the first protrusion 1021521 abuts against the side opposite to the second protrusion 1021421, and a damping force is generated between the first protrusion 1021521 and the second protrusion 1021421, so that the first protrusion 1021521 blocks the first support arm 10214 from continuing to slide along the first slide groove 102132, thereby keeping the first shell fixing frame 10213 in the corresponding rotation position. In addition, during the rotation of the first rotating component 1021 relative to the base 101, due to the existence of the damping force between the first support arm 10214 and the first damping module 10215, the user may have a more obvious sense of frustration when opening and closing the electronic device, thereby improving the user experience.

[0159] It can be understood that, since the first protrusion 1021521 can always abut against the two inclined surfaces of the second protrusion 1021421 and the connecting surface between the two inclined surfaces, by reasonably designing the two inclined surfaces of the second protrusion 1021421 and the connecting surface between the two inclined surfaces, as well as the abutment method between the first protrusion 1021521 and the second protrusion 1021421, the first shell fixing frame 10213 can be maintained in the corresponding rotation position when the electronic device is in the unfolded state and the closed state; in addition, when the electronic device is folded from the intermediate state to the unfolded state or the closed state, the abutment force between the first protrusion 1021521 and the second protrusion 1021421 can be made smaller, then in the absence of external force, the second protrusion 1021421 can continue to slide along the first direction relative to the first protrusion 1021521 until it is in a stable unfolded state or closed state, thereby realizing the self-expanding function of the electronic device at the end stage of the unfolded state and the self-closing function at the end stage of the closed state.

[0160] You can continue to refer to Figure 4 In the present application, the first support arm 10214 may include two first connecting arms 102142 arranged opposite to each other, and the first housing fixing frame 10213 may be provided with a first sliding groove 102132 corresponding to each first connecting arm 102142, so that each first connecting arm 102142 can slide in the corresponding first sliding groove 102132 to realize the sliding connection between the first support arm 10214 and the first housing fixing frame 10213. In addition, along the extension direction of the rotation axis of the first support arm 10214, the two first connecting arms 102142 are arranged at intervals, and the first installation groove 102133 and the first damping module 10215 are located between the two first connecting arms 102142. In this way, the structure of the first rotating assembly 1021 can be more compact, which is conducive to realizing the miniaturization design of the rotating shaft mechanism 1.

[0161] It is worth mentioning that when the first support arm 10214 includes two relatively arranged first connecting arms 102142, the second protrusion 1021421 can be set on the surface of one of the first connecting arms 102142 facing the first mounting groove 102133, or a second protrusion 1021421 can be set on the surface of each first connecting arm 102142 facing the first mounting groove 102133, and it can be adaptively adjusted according to the number and setting position of the first protrusions 1021521 and the first notches 1021331.

[0162] In the present application, the second rotating assembly 1022 further includes a second damping module 10225. The second damping module 10225 can be configured with reference to the first damping module 10215. Figure 7 , Figure 7 It can also be used to demonstrate the structure of the second housing fixing frame 10223. The second housing fixing frame 10223 also includes a second mounting groove 102233, and the second damping module 10225 is mounted in the second mounting groove 102233. The groove wall of the second mounting groove 102233 is provided with a second notch 1022331. In addition, the second mounting groove 102233 can be arranged adjacent to the second slide groove 102232, and the second slide groove 102232 and the second mounting groove 102233 can be connected through the second notch 1022331.

[0163] When the second damping module 10225 is specifically set, Fig.16 As shown, Fig.16 It can also be used to demonstrate the structure of the second damping module 10225. The second damping module 10225 may include a second elastic member 102251 and a second damping bracket 102252. The second elastic member 102251 may be, but is not limited to, a spring, and the second damping bracket 102252 includes a third protrusion 1022521. The second elastic member 102251 may press the second damping bracket 102252 toward the groove wall of the second mounting groove 102233, and under the elastic force of the second elastic member 102251, the third protrusion 1022521 of the second damping bracket 102252 may slide along the second notch 1022331 and extend into the second slide groove 102232.

[0164] In the present application, when the second elastic member 102251 is a spring, a second limiting column 1022332 may be further provided in the second mounting groove 102233, and the spring may be sleeved on the second limiting column 1022332, which may effectively prevent the second elastic member 102251 from bending during the process of the second elastic member squeezing the second damping bracket, and may effectively improve the structural reliability of the second damping module 10225. In addition, the second damping bracket 102252 may also include two second limiting portions 1022522, the extension direction of the two second limiting portions 1022522 is the same as the direction of action of the elastic force of the second elastic member 102251, and the second elastic member 102251 may be located between the two second limiting portions 1022522, so that under the action of the two second limiting portions 1022522, the risk of the second elastic member 102251 bending is further reduced, thereby improving the structural reliability of the second damping module 10225.

[0165] As can be seen from the foregoing, the second support arm 10224 can slide along the second slide groove 102232, so in this application, reference can be made to Figure 7 and Fig.14 , the surface of the second support arm 10224 facing the second mounting groove 102233 may be provided with a fourth protrusion 1022421. In this way, when the third protrusion 1022521 extends into the second slide groove 102232, in the second direction, the third protrusion 1022521 and the fourth protrusion 1022421 are in contact with each other on the opposite sides, and a damping force is generated between the third protrusion 1022521 and the fourth protrusion 1022421, so that the third protrusion 1022521 blocks the second support arm 10224 from continuing to move along the second slide groove 102232, thereby keeping the second housing fixing frame 10223 in the corresponding rotation position. In addition, during the rotation of the second rotating assembly 1022 relative to the base 101, due to the existence of the damping force between the second support arm 10224 and the second damping module 10225, the user may have a more obvious sense of frustration when opening and closing the electronic device, thereby improving the user experience.

[0166] It can be understood that, since the third protrusion 1022521 can always abut against the two inclined surfaces of the fourth protrusion 1022421 and the connecting surface between the two inclined surfaces, by reasonably designing the two inclined surfaces of the fourth protrusion 1022421 and the connecting surface between the two inclined surfaces, as well as the abutment method between the third protrusion 1022521 and the fourth protrusion 1022421, the second shell fixing frame 10223 can be maintained in the corresponding rotation position when the electronic device is in the unfolded state and the closed state; in addition, when the electronic device is folded from the intermediate state to the unfolded state or the closed state, the abutment force between the third protrusion 1022521 and the fourth protrusion 1022421 can be made smaller, then in the absence of external force, the fourth protrusion 1022421 can continue to slide along the second direction relative to the third protrusion 1022521 until it is in a stable unfolded state or closed state, thereby realizing the self-expanding function of the electronic device at the end stage of the unfolded state and the self-closing function at the end stage of the closed state.

[0167] You can continue to refer to Fig.14 In the present application, the second support arm 10224 may include two second connecting arms 102242 arranged opposite to each other. Figure 7 The second housing fixing frame 10223 shown can be provided with a second slide groove 102232 corresponding to each second connecting arm 102242, so that each second connecting arm 102242 can slide in the corresponding second slide groove 102232 to realize the sliding connection between the second support arm 10224 and the second housing fixing frame 10223. In addition, along the extension direction of the rotation axis of the second support arm 10224, the two second connecting arms 102242 are arranged at intervals, and the second installation groove 102233 and the second damping module 10225 are located between the two second connecting arms 102242. In this way, the structure of the second rotating assembly 1022 can be more compact, which is conducive to realizing the miniaturization design of the rotating shaft mechanism 1.

[0168] It is worth mentioning that when the second support arm 10224 includes two relatively arranged second connecting arms 102242, the fourth protrusion 1022421 can be arranged on the surface of one of the second connecting arms 102242 facing the second mounting groove 102233, or a fourth protrusion 1022421 can be arranged on the surface of each second connecting arm 102242 facing the second mounting groove 102233, and the fourth protrusion 1022421 can be adaptively adjusted according to the number and setting position of the third protrusion 1022521 and the second notch 1022331.

[0169] You can continue to refer to Figure 4In the embodiment of the present application, the first rotating assembly 1021 may further include a first supporting plate 10216. In addition, the second rotating assembly 1022 may further include a second supporting plate 10226. The first supporting plate 10216 includes a first plate surface 102161 and a second plate surface 102162 disposed opposite to each other, and the second supporting plate 10226 includes a third plate surface 102261 and a fourth plate surface 102262 disposed opposite to each other. The first plate surface 102161 may be used to support the flexible display screen, and the third plate surface 102261 may be used to support the flexible display screen.

[0170] Reference Fig.17 , Fig.17 Another cross-sectional view of the hinge mechanism 1 provided in the embodiment of the present application when the electronic device is in a closed state. Fig.17 It can be seen that the hinge mechanism 1 provided in the present application, the base 101 may include a bearing surface 1014 for supporting the flexible display screen. Fig.17 In the closed state shown, a triangular screen space 5 can be formed between the first plate surface 102161, the second plate surface 102162 and the bearing surface 1014. The bendable part of the flexible display screen of the electronic device can be accommodated in the screen space 5 to form a water drop shape.

[0171] In order to enable the rotating shaft mechanism 1 to form the above Fig.17 As shown in the screen space 5, in the present application, the first support plate 10216 is rotatably connected to the first shell fixing frame 10213, and the second support plate 10226 is rotatably connected to the second shell fixing frame 10223. In specific implementation, as Figure 7 As shown, the first housing fixing frame 10213 may also be provided with a first rotation groove 102134, and the first rotation groove 102134 may be an arc-shaped groove. Fig.18 , Fig.18 Another cross-sectional view of the hinge mechanism 1 provided in the embodiment of the present application when the electronic device is in a closed state, which can be used to demonstrate the matching relationship between the first support plate 10216 and the first shell fixing frame 10213. Among them, the end of the first support plate 10216 facing the first shell fixing frame 10213 can be provided with a first rotating portion 102163, and the first rotating portion 102163 can be set as an arc-shaped rotating portion, which can be exemplarily a circular arc-shaped rotating portion. Then the first rotating portion 102163 can be installed in the first rotating groove 102134, and the relative rotation between the first support plate 10216 and the first shell fixing frame 10213 can be achieved by sliding the first rotating portion 102163 along the groove surface of the first rotating groove 102134.

[0172] It can be understood that in order to improve the stability of the first support plate 10216 rotating around the first shell fixing frame 10213, the first shell fixing frame 10213 can be provided with a plurality of first rotation grooves 102134, and the first support plate 10216 can be provided with a plurality of first rotating parts 102163, so that the first rotating parts 102163 can be installed one by one in a first rotation groove 102134, so that the relative rotation between the first support plate 10216 and the first shell fixing frame 10213 can be achieved by each first rotating part 102163 sliding around the groove surface of the corresponding first rotation groove 102134.

[0173] Similarly, when the second support plate 10226 and the second housing fixing frame 10223 are rotatably connected, the following can be continued with reference to Fig.18 , the second housing fixing frame 10223 may also be provided with a second rotation groove 102234, which may be an arc-shaped groove. In addition, the end of the second support plate 10226 facing the second housing fixing frame 10223 may be provided with a second rotation portion 102263, which may be an arc-shaped rotation portion, and may be an arc-shaped rotation portion as an example. In this way, the second rotation portion 102263 may be installed in the second rotation groove 102234, and the second support plate 10226 and the second housing fixing frame 10223 may be relatively rotated by the second rotation portion 102263 sliding along the groove surface of the second rotation groove 102234. In addition, the second shell fixing frame 10223 may be provided with a plurality of second rotating grooves 102234, and the second support plate 10226 may be provided with a plurality of second rotating parts 102263, so that the second rotating parts 102263 can be installed one by one in a second rotating groove 102234, so that the relative rotation between the second support plate 10226 and the second shell fixing frame 10223 can be achieved by each second rotating part 102263 sliding around the groove surface of the corresponding second rotating groove 102234, thereby improving the stability of the second support plate 10226 rotating around the second shell fixing frame 10223.

[0174] In the present application, in addition to being able to realize rotational connection between the first support plate 10216 and the first shell fixing frame 10213, and the second support plate 10226 and the second shell fixing frame 10223 through the above-mentioned virtual axis, other possible ways can also be used to realize rotational connection. Exemplarily, in some other possible embodiments of the present application, the first support plate 10216 can also be rotationally connected to the first shell fixing frame 10213 through a pin, so that the first support plate 10216 and the first shell fixing frame 10213 are rotationally connected through a physical axis. Similarly, the second support plate 10226 can also be rotationally connected to the second shell fixing frame 10223 through a pin, so that the first support plate 10216 and the first shell fixing frame 10213 are rotationally connected through a physical axis.

[0175] In the present application, when the electronic device is in the unfolded state, the first board surface 102161 of the first support plate 10216, the second board surface 102162 of the second support plate 10226 and the bearing surface of the base can be in the same plane, thereby achieving flat support for the flexible display screen of the electronic device.

[0176] From the introduction of the structures of the first rotating assembly 1021 and the second rotating assembly 1022 in the above embodiment, it can be known that in the first rotating assembly 1021, the first housing fixing frame 10213 can drive the first support arm 10214 to rotate around the base 101, and in the second rotating assembly 1022, the second housing fixing frame 10223 can drive the second support arm 10224 to rotate around the base. Based on this, in the present application, it can be considered that the first support plate 10216 is driven to rotate around the first housing fixing frame 10213 by the rotation of the first support arm 10214 around the base 101. Similarly, the second support plate 10226 can also be driven to rotate around the second housing fixing frame 10223 by the rotation of the second support arm 10224 around the base 101.

[0177] When implementing it, please continue to refer to Fig.17 , the second plate surface 102162 of the first support plate 10216 may be provided with a first guide member 102164, and the first guide member 102164 may be provided with a third track groove 1021641. In addition, in the present application, the first support arm 10214 may also be provided with a first guide structure 102143, and the first guide structure 102143 may be, but not limited to, a columnar structure, and the first guide structure 102143 may be inserted into the third track groove 1021641 of the first support plate 10216, and may slide along the third track groove 1021641. In this way, during the rotation of the first support arm 10214 around the base 101, the first support plate 10216 may be driven to rotate around the first shell fixing frame 10213 by the sliding of the first guide structure 102143 in the third track groove 1021641.

[0178] Similarly, the fourth plate surface 102262 of the second support plate 10226 may be provided with a second guide member 102264, and the second guide member 102264 may be provided with a fourth track groove 1022641. In addition, in the present application, the second support arm 10224 may also be provided with a second guide structure 102243, and the second guide structure 102243 may be, but is not limited to, a columnar structure, and the second guide structure 102243 may be inserted into the fourth track groove 1022641 of the second support plate 10226, and may slide along the fourth track groove 1022641. In this way, during the rotation of the second support arm 10224 around the base 101, the second support plate 10226 may be driven to rotate around the second shell fixing frame 10223 by the sliding of the second guide structure 102243 in the fourth track groove 1022641.

[0179] exist Fig.17 In the illustrated embodiment, the third track groove 1021641 and the fourth track groove 1022641 may be closed grooves, and the first guide structure 102143 and the second guide structure 102243 may be guide shafts, which can improve the reliability of the movement of the first guide structure 102143 and the second guide structure 102243 in the corresponding track grooves, thereby making the movement of the first support plate 10216 and the second support plate 10226 more stable.

[0180] In the embodiment of the present application, during the rotation process of the hinge mechanism 1 from the electronic device being in an unfolded state to a closed state, the first shell fixing frame 10213 and the second shell fixing frame 10223 rotate towards each other, the first shell fixing frame 10213 drives the first support arm 10214 to rotate around the base 101, the second shell fixing frame 10223 drives the second support arm 10224 to rotate around the base 101, and the first guide structure 102143 of the first support arm 10214 slides along the third track groove 1021641 to drive the first support plate 10216 to rotate relative to the first shell fixing frame 10213, and drive the end of the first support plate 10216 close to the base 101 to move in a direction away from the base 101. In addition, the second guide structure 102243 of the second support arm 10224 slides along the fourth track groove 1022641 to drive the second support plate 10226 to rotate relative to the second housing fixing frame 10223, and drives the end of the second support plate 10226 close to the base 101 to move in a direction away from the base 101. Thus, a screen-accommodating space 5 for accommodating the bendable part of the flexible display screen can be formed between the first support plate 10216, the base 101, and the second support plate 10226.

[0181] You can continue to refer to Figure 4In the present application, the first rotating assembly 1021 further includes a third support plate 10217, the third support plate 10217 is slidably connected to the first housing fixing frame 10213, and the third support plate 10217 is slidably connected to the first support plate 10216. Fig.19a , Fig.19a Another cross-sectional view of the hinge mechanism 1 provided in the embodiment of the present application when the electronic device is in a closed state, which can be used to demonstrate the matching relationship between the third support plate 10217 and the first shell fixing frame 10213. Among them, the third support plate 10217 includes a first sliding portion 102171 and a first supporting portion 102172, and the first shell fixing frame 10213 includes a fifth track groove 102135. The first sliding portion 102171 is inserted into the fifth track groove 102135 and can slide along the fifth track groove 102135 relative to the first shell fixing frame 10213. In the present application, the specific setting form of the fifth track groove 102135 is not limited, and it can be exemplarily a linear groove. The first sliding portion 102171 can slide in the fifth track groove 102135 relative to the first shell fixing frame 10213 along the third direction, wherein the third direction is Fig.19a The direction shown in a.

[0182] In addition, you can continue to refer to Figure 4 The first support plate 10216 includes a third slide groove 102165, and the first support portion 102172 can slide along the third slide groove 102165. In the present application, the specific arrangement of the third slide groove 102165 and the first support portion 102172 is not limited. For example, the third slide groove 102165 can be a linear groove. Figure 4 As shown, along the axial direction of the rotating shaft mechanism 1, the third sliding grooves 102165 can be arranged in parallel. The first support portion 102172 can be arranged as a comb-tooth structure, and each comb tooth of the first support portion 102172 is correspondingly inserted into a third sliding groove 102165, and can slide in the third sliding groove 102165 relative to the first support plate 10216 along the fourth direction, so as to realize the sliding of the first support portion 102172 in the third sliding groove 102165 relative to the first support plate 10216 along the fourth direction, wherein the fourth direction is Fig.19a The direction shown in b.

[0183] You can continue to refer to Fig.19a In the present application, when the electronic device is in a closed state, the angle between the third direction and the fourth direction is greater than 0°, so that the first shell fixing frame 10213 and the first support plate 10216 limit the movement of the third support plate 10217 in the direction toward the base 101, thereby preventing the third support plate 10217 from falling off.

[0184] Reference Fig.19b , Fig.19b Another cross-sectional view of the hinge mechanism 1 provided in the embodiment of the present application when the electronic device is in a closed state. Fig.19b It can be seen that when the electronic device is in a closed state, the third support plate 10217 can avoid the first swing arm 10211, so that the hinge mechanism 1 can form a screen-accommodating space that meets the bending requirements of the flexible display screen in the closed state. Fig.19a and Fig.19b The third support plate 10217 may further include a first abutting portion 102173, which may be located between the first sliding portion 102171 and the first support portion 102172. When the electronic device is in a closed state, the first abutting portion 102173 abuts against the first shell fixing frame 10213, so that the first shell fixing frame 10213 provides a supporting force for the first abutting portion 102173 in a direction away from the base 101, thereby enabling the first shell fixing frame 10213 to provide a supporting force for the third support plate 10217 in a direction away from the base 101, so as to prevent the third support plate 10217 from falling off, thereby improving the structural reliability of the first rotating assembly 1021, and further improving the structural reliability of the hinge mechanism 1.

[0185] like Figure 4 As shown, in the present application, the first support portion 102172 includes a fifth plate surface 1021721. In addition, referring to Fig. 20 , Fig. 20 for Fig.19a The structure diagram of the rotating shaft mechanism 1 shown in FIG. 1 when the electronic device is in the unfolded state. Fig. 20 In the shown state, the third support plate 10217 is located on the side of the first swing arm 10211 facing the flexible display screen, and the first plate surface 102161 and the fifth plate surface 1021721 are connected to form a support surface for supporting the flexible display screen, which is beneficial to improving the integrity of the support surface of the hinge mechanism 1 for supporting the flexible display screen, thereby achieving flat support for the flexible display screen.

[0186] You can continue to refer to Fig.19a, the second rotating assembly 1022 also includes a fourth support plate 10227. The fourth support plate 10227 is slidably connected to the second shell fixing frame 10223, and the fourth support plate 10227 is slidably connected to the second support plate 10226. In a specific implementation, the fourth support plate 10227 includes a second sliding portion 102271 and a second supporting portion 102272, the second shell fixing frame 10223 includes a sixth track groove 102235, the first sliding portion 102171 is inserted into the sixth track groove 102235, and can slide along the sixth track groove 102235 relative to the second shell fixing frame 10223. In the present application, the specific setting form of the sixth track groove 102235 is not limited, and it can be exemplarily a linear groove. The second sliding portion 102271 can slide in the sixth track groove 102235 relative to the second shell fixing frame 10223 along the fifth direction, wherein the fifth direction is Fig.19a The direction shown in c.

[0187] In addition, you can continue to refer to Figure 4 The second support plate 10226 includes a fourth slide groove 102265, and the second support portion 102272 can slide along the fourth slide groove 102265. In the present application, the specific arrangement of the fourth slide groove 102265 and the second support portion 102272 is not limited. For example, the fourth slide groove 102265 can be a linear groove. In addition, Figure 4 As shown, along the axial direction of the rotating shaft mechanism 1, the fourth slide groove 102265 can be a plurality of parallel arrangements, and the second support portion 102272 can be arranged as a comb-tooth structure, then each comb tooth of the second support portion 102272 is correspondingly inserted into a fourth slide groove 102265, and can slide in the fourth slide groove 102265 relative to the second support plate 10226 along the sixth direction, so as to realize the sliding of the second support portion 102272 in the fourth slide groove 102265 relative to the second support plate 10226 along the sixth direction, wherein the sixth direction is Fig.19a The direction shown in d.

[0188] In addition, if Fig.19a As shown, when the electronic device is in a closed state, the angle between the fifth direction and the sixth direction is greater than 0°, so that the second shell fixing frame 10223 and the second support plate 10226 limit the movement of the fourth support plate 10227 in the direction toward the base, thereby preventing the third support plate 10217 from falling off.

[0189] You can continue to refer to Fig.19b When the electronic device is in a closed state, the fourth support plate 10227 can avoid the second swing arm 10221, so that the hinge mechanism 1 can form a screen-accommodating space that meets the bending requirements of the flexible display screen in the closed state. In addition, the fourth support plate 10227 can also include a second abutment portion 102273, which is also referred to Fig.19a and Fig.19b The second abutment portion 102273 can be located between the second sliding portion 102271 and the second supporting portion 102272. When the electronic device is in a closed state, the second abutment portion 102273 abuts against the second shell fixing frame 10223, so that the second shell fixing frame 10223 provides a supporting force for the second abutment portion 102273 in a direction away from the base 101, thereby enabling the second shell fixing frame 10223 to provide a supporting force for the fourth supporting plate 10227 in a direction away from the base 101, so as to prevent the fourth supporting plate 10227 from falling off, thereby improving the structural reliability of the second rotating assembly 1022, and further improving the structural reliability of the hinge mechanism 1.

[0190] like Figure 4 As shown, in the present application, the second support portion 102272 includes a sixth plate surface 1022721. Fig. 20 , when the electronic device is in Fig. 20 In the unfolded state shown, the fourth support plate 10227 can be located on the side of the second swing arm 10221 facing the flexible display screen, and the third plate surface 102261 and the sixth plate surface 1022721 are connected to form a support surface for supporting the flexible display screen, which is beneficial to improving the integrity of the support surface of the hinge mechanism 1 for supporting the flexible display screen, thereby achieving flat support for the flexible display screen.

[0191] The rotating shaft mechanism 1 provided in the above embodiment of the present application can be used, for example, Figure 1 or Figure 2 The electronic device shown in FIG. The first housing fixing frame 10213 can be fixedly connected to the housing located on the same side of the base 101, and the second housing fixing frame 10223 can be fixedly connected to another housing. Figure 2 The first housing 2 of the electronic device shown in FIG. is fixedly connected, and the second housing fixing frame 10223 can be used to Figure 2 Based on this, it can be understood that the process of the first housing fixing frame 10213 and the second housing fixing frame 10223 rotating in opposite or opposite directions is also the process of the first housing 2 and the second housing 3 rotating in opposite or opposite directions.

[0192] In addition, the flexible display screen 4 of the electronic device can be fixedly connected to the first shell 2 and the second shell 3, and the connection method can be but is not limited to bonding. In specific implementation, the flexible display screen 4 can be bonded to a partial area of ​​the surface of the first shell 2 facing the flexible display screen 4, and the flexible display screen 4 can be bonded to a partial area of ​​the surface of the second shell 3 facing the flexible display screen 4, so that when the electronic device is in the unfolded state, the hinge mechanism 1, the first shell 2 and the second shell 3 can jointly play a role in flattening the flexible display screen 4, thereby ensuring the integrity of the shape of the electronic device in the unfolded state. In the process of the electronic device changing from the unfolded state to the closed state, the two shells rotate towards each other to drive the flexible display screen 4 to rotate, which can effectively prevent the flexible display screen 4 from being deformed to reduce the risk of damage to the flexible display screen 4.

[0193] It should be understood that in order to realize the above-mentioned electronic device, the present application is not limited to the various embodiments of the hinge mechanism 1 mentioned above, and any hinge mechanism 1 that can realize the following states is acceptable, namely:

[0194] When the electronic device is in the unfolded state, the hinge mechanism 1, the first housing 2 and the second housing 3 can jointly play the role of flattening the flexible display screen 4. When the electronic device changes from the unfolded state to the closed state, the two housings of the electronic device can rotate in opposite directions and drive the flexible display screen 4 to bend. When the electronic device changes from the closed state to the unfolded state, the two housings of the electronic device can rotate in opposite directions and drive the flexible display screen 4 to unfold.

[0195] The above are only specific implementations 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 substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hinge mechanism for a foldable electronic device, wherein the hinge mechanism is arranged opposite to a foldable portion of a flexible display screen of the electronic device, and the electronic device is unfolded or closed by the hinge mechanism, characterized in that: The hinge mechanism comprises a base and a rotating module, the rotating module comprises a first rotating assembly and a second rotating assembly, the first rotating assembly and the second rotating assembly are respectively arranged on opposite sides of the base, the side of the base away from the flexible display screen comprises an appearance shell, the appearance shell comprises opposite first and second ends; wherein: The first rotating assembly includes a first swing arm, a first shell fixing frame, a first radial swing arm and a first support arm; the first swing arm is rotatably connected to the base; the first support arm is rotatably connected to the base, the first support arm is slidably connected to the first shell fixing frame along a first direction, the axis of rotation of the first support arm around the base and the axis of rotation of the first swing arm around the base are both parallel to the length direction of the base and do not overlap with each other, and the first direction is perpendicular to the length direction of the base; the first radial swing arm is located between the first swing arm and the first shell fixing frame, the first radial swing arm includes a first connecting portion, a second connecting portion and a first avoidance opening, the first avoidance opening is located between the first connecting portion and the second connecting portion, a side of the first radial swing arm facing away from the first avoidance opening is a first connecting surface, the first connecting portion is rotatably connected to the first swing arm, the second connecting portion is rotatably connected to the first shell fixing frame, and the rotation axis of the first radial swing arm extends along the first direction; the first end of the appearance shell is arranged toward the first shell fixing frame; The second rotating assembly includes a second swing arm, a second shell fixing frame, a second radial swing arm and a second supporting arm; the second swing arm is rotatably connected to the base; the second supporting arm is rotatably connected to the base, the second supporting arm is slidably connected to the second shell fixing frame along a second direction, the axis of rotation of the second supporting arm around the base and the axis of rotation of the second swing arm around the base are both parallel to the length direction of the base and do not overlap with each other, and the second direction is perpendicular to the length direction of the base; the second radial swing arm is located between the second swing arm and the second shell fixing frame, the second radial swing arm includes a third connecting portion, a fourth connecting portion and a second avoidance opening, the second avoidance opening is located between the third connecting portion and the fourth connecting portion, a side of the second radial swing arm facing away from the second avoidance opening is a second connecting surface, the third connecting portion is rotatably connected to the second swing arm, the fourth connecting portion is rotatably connected to the second shell fixing frame, and the rotation axis of the second radial swing arm extends along the second direction; the second end of the appearance shell is arranged toward the second shell fixing frame; When the electronic device is in an expanded state, the first end of the appearance shell is inserted into the first avoidance opening, and the second end of the appearance shell is inserted into the second avoidance opening; in the process of the electronic device switching from the expanded state to the closed state, the first shell fixing frame slides relative to the first support arm in a direction away from the base, and the second shell fixing frame slides relative to the second support arm in a direction away from the base, the first support arm rotates around the base to drive the first radial rotary arm to rotate around the first direction, and the second support arm rotates around the base to drive the second radial rotary arm to rotate around the second direction, so that when the electronic device is in a closed state, the first connection surface of the first radial rotary arm does not face the flexible display screen, and the second connection surface of the second radial rotary arm does not face the flexible display screen.

2. The rotating shaft mechanism according to claim 1, characterized in that: The first radial spiral arm further includes a first avoidance portion, the first avoidance portion is located between the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion are connected through the first avoidance portion; the first avoidance portion is arranged opposite to the first avoidance opening, and the first connecting surface is a surface of the first avoidance portion away from the first avoidance opening; The second radial spiral arm also includes a second avoidance portion, which is located between the third connecting portion and the fourth connecting portion, and the third connecting portion and the fourth connecting portion are connected through the second avoidance portion; the second avoidance portion is arranged opposite to the second avoidance opening, and the second connecting surface is the surface of the second avoidance portion facing away from the second avoidance opening.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The first connecting portion is rotatably connected to the first swing arm via a first rotating shaft, the second connecting portion is rotatably connected to the first housing fixing frame via a second rotating shaft, the axis of the first rotating shaft extends along the first direction, and the axis of the second rotating shaft extends along the first direction; The third connection portion is rotationally connected to the second swing arm via a third rotating shaft, the fourth connection portion is rotationally connected to the second shell fixing frame via a fourth rotating shaft, the axis of the third rotating shaft extends along the second direction, and the axis of the fourth rotating shaft extends along the second direction.

4. The rotating shaft mechanism according to claim 3, characterized in that: The second connecting portion is provided with a first card slot, the first housing fixing frame is provided with a first card connection portion, the first card connection portion is inserted into the first card slot, and the second rotating shaft is passed through the slot wall of the first card slot and the first card connection portion; The fourth connecting portion is provided with a second card slot, the second shell fixing frame is provided with a second card connection portion, the second card connection portion is inserted into the second card slot, and the fourth rotating shaft is passed through the slot wall of the second card slot and the second card connection portion.

5. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The first radial swing arm further includes a first track groove; the first support arm includes a first guide portion, the first guide portion slides along the first track groove to drive the first radial swing arm to rotate relative to the first swing arm, so that when the electronic device is in the unfolded state, the first end is inserted into the first avoidance opening; The second radial rotary arm also includes a second track groove; the second support arm includes a second guide portion, and the second guide portion slides along the second track groove to drive the second radial rotary arm to rotate relative to the second swing arm, so that when the electronic device is in the unfolded state, the second end is inserted into the second avoidance opening.

6. The rotating shaft mechanism according to claim 5, characterized in that: The first track groove is a spiral groove, and the second track groove is a spiral groove.

7. The rotating shaft mechanism according to claim 5 or 6, characterized in that: The first connecting portion is provided with a first avoidance surface, and the third connecting portion is provided with a second avoidance surface; when the electronic device is in a closed state, the first avoidance surface of the first radial spiral arm faces the flexible display screen and avoids the foldable part of the flexible display screen, and the second avoidance surface of the second radial spiral arm faces the flexible display screen and avoids the foldable part of the flexible display screen.

8. The rotating shaft mechanism according to claim 7, characterized in that: The first guide portion slides along the first track groove to drive the first radial rotary arm to rotate relative to the first swing arm, so that when the electronic device is in a closed state, the first avoidance surface faces the flexible display screen and avoids the foldable part of the flexible display screen; The second guide portion slides along the second track groove to drive the second radial rotary arm to rotate relative to the second swing arm, so that when the electronic device is in a closed state, the second avoidance surface faces the flexible display screen and avoids the foldable part of the flexible display screen.

9. The rotating shaft mechanism according to claim 7 or 8, characterized in that: The first avoidance surface is an arc-shaped concave surface, and the second avoidance surface is an arc-shaped concave surface.

10. The rotating shaft mechanism according to any one of claims 1 to 9, characterized in that: The base is provided with a first arc groove and a second arc groove, the first swing arm comprises a first arc rotating block, the first arc rotating block is accommodated in the first arc groove, and the first arc rotating block can slide along the groove surface of the first arc groove; The second swing arm includes a second arc-shaped rotating block, the second arc-shaped rotating block is accommodated in the second arc-shaped groove, and the second arc-shaped rotating block can slide along the groove surface of the second arc-shaped groove.

11. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that: The first housing fixing frame is provided with a first slide groove, the first support arm is accommodated in the first slide groove, and the first support arm can slide in the first slide groove along the first direction; The second housing fixing frame is provided with a second sliding groove, the second supporting arm is accommodated in the second sliding groove, and the second supporting arm can slide in the second sliding groove along the second direction.

12. The rotating shaft mechanism according to claim 11, characterized in that: The first housing fixing frame further comprises a first mounting groove, a groove wall of the first mounting groove is provided with a first notch, and the first mounting groove is connected with the first slide groove through the first notch; the rotating shaft mechanism further comprises a first damping module, the first damping module comprises a first elastic member and a first damping bracket, the first damping bracket comprises a first protrusion, the first damping bracket is mounted on the first mounting groove, and under the elastic force of the first elastic member, the first protrusion can slide along the first notch and extend into the first slide groove; the surface of the first support arm facing the first mounting groove is further provided with a second protrusion, and when the first protrusion extends into the first slide groove, along the first direction, the first protrusion abuts against the side surface opposite to the second protrusion; The second shell fixing frame also includes a second mounting groove, a groove wall of the second mounting groove is provided with a second notch, and the second mounting groove is connected to the second slide groove through the second notch; the rotating shaft mechanism also includes a second damping module, the second damping module includes a second elastic member and a second damping bracket, the second damping bracket includes a third protrusion, the second damping bracket is installed in the second mounting groove, and under the elastic force of the second elastic member, the third protrusion can slide along the second notch and extend into the second slide groove; the surface of the second support arm facing the second mounting groove is also provided with a fourth protrusion, and when the third protrusion extends into the second slide groove, along the second direction, the third protrusion abuts against the side opposite to the fourth protrusion.

13. The rotating shaft mechanism according to claim 12, characterized in that: The first supporting arm comprises two first connecting arms arranged opposite to each other, the two first connecting arms are slidably connected to the first housing fixing frame, and the first damping module is located between the two first connecting arms; The second supporting arm includes two second connecting arms which are arranged opposite to each other. The two second connecting arms are slidably connected to the second housing fixing frame. The second damping module is located between the two second connecting arms.

14. The rotating shaft mechanism according to any one of claims 1 to 13, characterized in that: The first rotating assembly further includes a first supporting plate, the first supporting plate includes a first plate surface and a second plate surface disposed opposite to each other, the first plate surface is used to support the flexible display screen, the second plate surface is provided with a third track groove, the first supporting arm is provided with a first guiding structure, the first guiding structure is inserted into the third track groove, and the first guiding structure can slide along the third track groove; The second rotating assembly further includes a second supporting plate, the second supporting plate includes a third plate surface and a fourth plate surface disposed opposite to each other, the third plate surface is used to support the flexible display screen, the fourth plate surface is provided with a fourth track groove, the second supporting arm is provided with a second guide structure, the second guide structure is inserted into the fourth track groove, and the second guide structure can slide along the fourth track groove; When the first shell fixing frame and the second shell fixing frame rotate towards each other, the first shell fixing frame drives the first support arm to rotate around the base, and the first guide structure slides along the third track groove to drive the first support plate to rotate relative to the first shell fixing frame, and drives the end of the first support plate close to the base to move in a direction away from the base; the second shell fixing frame drives the second support arm and the second swing arm to rotate around the base, and the second guide structure slides along the third track groove to drive the second support plate to rotate relative to the second shell fixing frame, and drives the end of the second support plate close to the base to move in a direction away from the base, so as to form a screen space for accommodating the bendable part of the flexible display screen between the first support plate, the base and the second support plate.

15. The rotating shaft mechanism according to claim 14, characterized in that: The first housing fixing frame further includes a fifth track groove, the first rotating assembly further includes a third supporting plate, the third supporting plate includes a first sliding portion and a first supporting portion, the first sliding portion is inserted into the fifth track groove, the first housing fixing frame rotates around the base to drive the third supporting plate to rotate around the base, and the first sliding portion slides along the fifth track groove; the first supporting plate includes a third sliding groove, the first supporting portion can slide along the third sliding groove, and the first supporting portion includes a fifth plate surface for supporting the flexible display screen; when the electronic device is in a closed state, the third supporting plate avoids the first swing arm; When the electronic device is in an unfolded state, the third support plate is located on a side of the first swing arm facing the flexible display screen, and the first plate surface and the fifth plate surface are connected to form a support surface for supporting the flexible display screen; The second shell fixing frame also includes a sixth track groove, the second rotating assembly also includes a fourth support plate, the fourth support plate includes a second sliding portion and a second supporting portion, the second sliding portion is inserted into the sixth track groove, the second shell fixing frame rotates around the base to drive the fourth support plate to rotate around the base, and the second sliding portion slides along the sixth track groove; the second support plate includes a fourth slide groove, the second supporting portion can slide along the fourth slide groove, and the second supporting portion includes a sixth panel surface for supporting the flexible display screen; when the electronic device is in a closed state, the fourth support plate avoids the second swing arm; when the electronic device is in an unfolded state, the fourth support plate is located on the side of the second swing arm facing the flexible display screen, and the third panel surface and the sixth panel surface are connected to form a support surface for supporting the flexible display screen.

16. The rotating shaft mechanism according to claim 15, characterized in that: The fifth track groove is a linear groove, the third slide groove is a linear groove, the first sliding portion can slide in the fifth track groove relative to the first housing fixing frame along a third direction, the first supporting portion can slide in the third slide groove relative to the first supporting plate along a fourth direction, and when the electronic device is in a closed state, the angle between the third direction and the fourth direction is greater than 0°; The sixth track groove is a straight groove, the fourth slide groove is a straight groove, the second sliding portion can slide in the sixth track groove along the fifth direction relative to the second shell fixing frame, the second supporting portion can slide in the fourth slide groove along the sixth direction relative to the second supporting plate, and when the electronic device is in a closed state, the angle between the fifth direction and the sixth direction is greater than 0°.

17. The rotating shaft mechanism according to claim 15 or 16, characterized in that: The third support plate further includes a first abutting portion, and when the electronic device is in a closed state, the first abutting portion abuts against the first shell fixing frame, and the first shell fixing frame provides a supporting force for the first abutting portion in a direction away from the base; The fourth support plate further includes a second abutting portion, and when the electronic device is in a closed state, the second abutting portion abuts against the second shell fixing frame, and the second shell fixing frame provides a supporting force for the second abutting portion in a direction away from the base.

18. The rotating shaft mechanism according to any one of claims 14 to 17, characterized in that: The base includes a bearing surface, and the bearing surface is used to support the flexible display screen. When the electronic device is in a closed state, the bearing surface, the first supporting surface and the third supporting surface are connected to form a supporting surface for supporting the flexible display screen.

19. An electronic device, characterized in that: The device comprises a first shell, a second shell, a flexible display screen, and a hinge mechanism according to any one of claims 1 to 18, wherein: the first shell and the second shell are arranged on opposite sides of the hinge mechanism, the first shell fixing frame is fixedly connected to the first shell, and the second shell fixing frame is fixedly connected to the second shell; The flexible display screen continuously covers the first shell, the second shell and the hinge mechanism, and the flexible display screen is fixedly connected to the first shell and the second shell.

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