Folding mechanism and electronic device

Abstract

The present application provides a folding mechanism and an electronic device. A first connecting member forms, with a main shaft and a first fixing frame, a rotational connection structure by means of the engagement of an arc-shaped block and an arc-shaped slot. A second connecting member forms, with the main shaft and a second fixing frame, a rotational connection structure by means of the engagement of an arc-shaped block and an arc-shaped slot. A third connecting member forms, with the main shaft and the first fixing frame, a rotational connection structure by means of the engagement of an arc-shaped block and an arc-shaped slot. A fourth connecting member forms, with the main shaft and the second fixing frame, a rotational connection structure by means of the engagement of an arc-shaped block and an arc-shaped slot. A first support plate is fixedly connected to the first connecting member. A second support plate is fixedly connected to the second connecting member. When the folding mechanism is in an unfolded state, the first support plate and the second support plate jointly form a support surface. When the folding mechanism is in a folded state, the first support plate and the second support plate are arranged opposite each other and, with the main shaft, enclose an accommodating space. The folding mechanism can achieve miniaturization and can also achieve slimness.

Description

Folding mechanism and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410530132.9, filed on April 28, 2024, with the State Intellectual Property Office of China, the Chinese patent application No. 202410530132.9 has the title of "Folding mechanism and electronic device", and the entire content of the Chinese patent application No. 202410530132.9 is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of foldable electronic products, in particular to a folding mechanism and an electronic device. BACKGROUND

[0003] With the development of technology and the demand of electronic device market, the application of foldable electronic devices is more and more widely. In particular, foldable electronic devices with small size are more and more favored by users. The conventional foldable electronic devices with small size generally adopt a folding mechanism with two door plates. However, due to the compact arrangement between the components of the folding mechanism with two door plates, the folding mechanism with two door plates is prone to accumulation on the main shaft, thereby making the thickness of the folding mechanism with two door plates very thick. In this way, the foldable electronic devices with small size encounter a serious bottleneck in realizing thin-type setting. SUMMARY

[0004] The present application provides a folding mechanism with small size and thin-type setting.

[0005] In a first aspect, the present application provides a folding mechanism. The folding mechanism comprises a main shaft, a first fixed frame, a second fixed frame, a first connecting piece, a second connecting piece, a third connecting piece, a fourth connecting piece, a first support plate and a second support plate, the main shaft is located between the first fixed frame and the second fixed frame;

[0006] The first connecting piece, the main shaft and the first fixed frame are connected through the cooperation of the arc-shaped block and the arc-shaped groove to form a rotating connection structure, and the second connecting piece, the main shaft and the second fixed frame are connected through the cooperation of the arc-shaped block and the arc-shaped groove to form a rotating connection structure;

[0007] The third connecting piece, the main shaft and the first fixed frame are connected through the cooperation of the arc-shaped block and the arc-shaped groove to form a rotating connection structure, and the fourth connecting piece, the main shaft and the second fixed frame are connected through the cooperation of the arc-shaped block and the arc-shaped groove to form a rotating connection structure;

[0008] The first support plate is fixedly connected to the first connecting piece, and the second support plate is fixedly connected to the second connecting piece. When the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly form a support surface. When the folding mechanism is in the folded state, the first support plate and the second support plate are oppositely arranged and surround a containing space together with the main shaft.

[0009] It can be understood that, compared with the scheme in which the folding mechanism includes three support plates or more support plates and utilizes the three support plates or more support plates to jointly support the second display area of the flexible screen when the electronic device is in the unfolded state and to surround the containing space when the electronic device is in the folded state, in the implementation mode, the folding mechanism includes the first support plate and the second support plate and utilizes the first support plate and the second support plate to jointly support the second display area of the flexible screen when the electronic device is in the unfolded state and to surround the containing space when the electronic device is in the folded state. The folding mechanism in the embodiment has a smaller number of components, simple cooperation relationship and cooperation position, and the constituent components are easy to manufacture and assemble, thereby being conducive to simplifying the structure of the folding mechanism on one hand to realize miniaturized arrangement of the folding mechanism and being conducive to reducing the cost investment of the folding mechanism and being easier to mass produce on the other hand.

[0010] It can be understood that the first connecting piece, the main shaft and the first fixed frame are all connected through the cooperation of the arc-shaped blocks and the arc-shaped grooves to form a rotating connection structure, the second connecting piece, the main shaft and the second fixed frame are all connected through the cooperation of the arc-shaped blocks and the arc-shaped grooves to form a rotating connection structure, the third connecting piece, the main shaft and the first fixed frame are all connected through the cooperation of the arc-shaped blocks and the arc-shaped grooves to form a rotating connection structure, and the fourth connecting piece, the main shaft and the second fixed frame are all connected through the cooperation of the arc-shaped blocks and the arc-shaped grooves to form a rotating connection structure. It can be understood that the rotating connection structure in the embodiment is simple and occupies a small space, and is conducive to reducing the thickness of the folding mechanism to make the folding mechanism easier to realize light and thin.

[0011] It can be understood that, since the first support plate is fixed to the first connecting piece, the first support plate can move together with the first connecting piece. In addition, since the second support plate is fixed to the second connecting piece, the second support plate moves together with the second connecting piece. In this way, during the process of converting the folding mechanism from the folded state to the unfolded state and during the process of converting the folding mechanism from the unfolded state to the folded state, the first support plate and the second support plate gradually approach or move away from the main shaft, so that the flexible screen can be completely supported in various states of the folding mechanism, and the reliability and service life of the flexible screen and the electronic device are improved.

[0012] In addition, since the first support plate is fixedly connected with the first connecting piece and the second support plate is fixedly connected with the second connecting piece, the first connecting piece and the second connecting piece can realize the control of the movement of the first shell and the second shell and the control of the movement of the first support plate and the second support plate at the same time, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability.

[0013] It can be understood that the first support plate and the first connecting piece can be assembled into one component, and the second support plate and the second connecting piece can be assembled into one component, so that the first connecting piece can directly control the movement track of the first support plate, and the second connecting piece can directly control the movement track of the second support plate, so that the control precision of the movement process of the first support plate and the second support plate is high and the backlash is small, so that the stretching and contraction in the rotation process of the folding device is accurately realized to meet the support requirement of the flexible screen.

[0014] In a possible implementation, the main shaft is provided with an arc-shaped groove, the first rotating end of the first connecting piece includes an arc-shaped block, and the arc-shaped block of the first rotating end of the first connecting piece is arranged in the arc-shaped groove of the main shaft. It can be understood that the rotating connection structure formed by the first rotating end of the first connecting piece and the main shaft in the implementation is simple and occupies small space, which is beneficial to reduce the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0015] In a possible implementation, the first fixed frame is provided with an arc-shaped groove, the second rotating end of the first connecting piece includes an arc-shaped block, and the arc-shaped block of the second rotating end of the first connecting piece is arranged in the arc-shaped groove of the first fixed frame. It can be understood that the rotating connection structure formed by the second rotating end of the first connecting piece and the first fixed frame in the implementation is simple and occupies small space, which is beneficial to reduce the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0016] In a possible implementation, the main shaft is provided with an arc-shaped groove, the third rotating end of the third connecting piece includes an arc-shaped block, and the arc-shaped block of the third rotating end of the third connecting piece is arranged in the arc-shaped groove of the main shaft. It can be understood that the rotating connection structure formed by the third rotating end of the third connecting piece and the main shaft in the implementation is simple and occupies small space, which is beneficial to reduce the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0017] In a possible implementation, the first fixing frame is provided with an arc-shaped slot, and the fourth rotating end of the third connecting member comprises an arc-shaped block, and the fourth rotating end of the third connecting member is arranged in the arc-shaped slot of the first fixing frame. It can be understood that the fourth rotating end of the third connecting member and the first fixing frame form a rotating connection structure which is simple and occupies a small space, and is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0018] In a possible implementation, the main shaft is provided with a first arc-shaped slot and a second arc-shaped slot arranged at intervals, the first rotating end of the first connecting member comprises a first end portion, a middle portion and a second end portion connected in sequence, the first end portion and the second end portion of the first rotating end of the first connecting member are both arc-shaped, the first end portion of the first rotating end of the first connecting member is arranged in the first arc-shaped slot of the main shaft, and the second end portion of the first rotating end of the first connecting member is arranged in the second arc-shaped slot of the main shaft. It can be understood that the first rotating end of the first connecting member and the main shaft form a rotating connection structure which is simple and occupies a small space, and is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0019] In a possible implementation, the first fixing frame is provided with a first arc-shaped slot and a second arc-shaped slot arranged at intervals, the second rotating end of the first connecting member comprises a first end portion, a middle portion and a second end portion connected in sequence, the first end portion and the second end portion of the second rotating end of the first connecting member are both arc-shaped, the first end portion of the second rotating end of the first connecting member is arranged in the first arc-shaped slot of the first fixing frame, and the second end portion of the second rotating end of the first connecting member is arranged in the second arc-shaped slot of the first fixing frame. It can be understood that the second rotating end of the first connecting member and the first fixing frame form a rotating connection structure which is simple and occupies a small space, and is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0020] In a possible implementation, the main shaft is provided with a fifth arc-shaped slot and a sixth arc-shaped slot arranged at intervals, the third rotating end of the third connecting member comprises a first end portion, a middle portion and a second end portion connected in sequence, the first end portion and the second end portion of the third rotating end of the third connecting member are both arc-shaped, the first end portion of the third rotating end of the third connecting member is arranged in the fifth arc-shaped slot of the main shaft, and the second end portion of the third rotating end of the third connecting member is arranged in the sixth arc-shaped slot of the main shaft. It can be understood that the third rotating end of the third connecting member and the main shaft form a rotating connection structure which is simple and occupies a small space, and is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0021] In a possible implementation, the first fixing frame is further provided with a third arc-shaped slot, and a fourth rotating end of the third connecting member is in an arc shape and is arranged in the third arc-shaped slot of the first fixing frame. It can be understood that the fourth rotating end of the third connecting member in this implementation is connected to the first fixing frame in a rotating manner, and the rotating connection structure is simple and occupies less space, which is conducive to reducing the thickness of the folding mechanism and making the folding mechanism and the electronic device more easily thin and light.

[0022] In a possible implementation, the bending direction of the fourth rotating end of the third connecting member is opposite to the bending direction of the first end portion of the third rotating end of the third connecting member and the bending direction of the second end portion of the third rotating end of the third connecting member. In this way, the shape of the third connecting member is more diversified, and the accuracy of the motion trajectory of other components can be better controlled.

[0023] In a possible implementation, the first support plate is provided with a first avoiding hole, and when the folding mechanism is in the unfolded state, the middle portion of the third rotating end of the third connecting member is located in the first avoiding hole and forms the support surface together with the first support plate and the second support plate. It can be understood that in an embodiment, the first support plate is stacked on the third rotating end of the third connecting member when the folding mechanism is in the unfolded state. In this way, in the Z-axis direction, the third rotating end of the third connecting member easily lifts the first support plate, thereby causing the thickness of the folding mechanism in the Z-axis direction to be relatively high, which is not conducive to the thin design of the folding mechanism and the electronic device. In particular, when the third rotating end of the third connecting member needs to have sufficient thickness to ensure the overall strength of the third connecting member, the third rotating end of the third connecting member lifts the first support plate to a greater height. At this time, the thickness of the folding mechanism in the Z-axis direction is greater. In this embodiment, by arranging the middle portion of the third rotating end of the third connecting member in the first avoiding hole when the folding mechanism is in the unfolded state, the problem that the thickness of the folding mechanism and the electronic device is relatively high due to the lifting of the first support plate by the third rotating end of the third connecting member is solved. In addition, in the Z-axis direction, the middle portion of the third rotating end of the third connecting member overlaps with the first support plate, the space utilization in the Z-axis direction is high, which is conducive to the thin design of the folding mechanism and the electronic device.

[0024] In a possible implementation, the first support plate is provided with a first avoiding hole, and when the folding mechanism is in the folded state, the middle portion of the third rotating end of the third connecting member is located in the first avoiding hole and forms the containing space together with the first support plate and the second support plate.

[0025] It can be understood that in one embodiment, when the folding mechanism is in the folded state, the first support plate is stacked on the third rotating end of the third connecting piece. In this way, the third rotating end of the third connecting piece easily presses the accommodation space, so that the size of the accommodation space becomes smaller, thereby affecting the reliability of the flexible screen. In the present embodiment, when the folding mechanism is in the folded state, the middle part of the third rotating end of the third connecting piece is located in the first avoiding hole, and the first support plate and the second support plate together form the accommodation space. In this way, the third rotating end of the third connecting piece can no longer press the accommodation space, and the size of the accommodation space is no longer reduced, and the reliability of the flexible screen is better.

[0026] In one possible implementation, when the folding mechanism is in the unfolded state, a part of the first end of the third rotating end of the third connecting piece and a part of the second end of the third rotating end of the third connecting piece are located in the first avoiding hole, and together with the middle part of the third rotating end of the third connecting piece, the first support plate and the second support plate form the support surface. In this way, on the one hand, the problem that the third rotating end of the third connecting piece causes the folding mechanism and the electronic device to be relatively thick due to the lifting of the first support plate can be further solved, so as to realize the thin type setting of the folding mechanism and the electronic device.

[0027] In one possible implementation, when the folding mechanism is in the folded state, a part of the first end of the third rotating end of the third connecting piece and a part of the second end of the third rotating end of the third connecting piece are located in the first avoiding hole, and together with the middle part of the third rotating end of the third connecting piece, the first support plate and the second support plate form the accommodation space. In this way, the third rotating end of the third connecting piece can further no longer press the accommodation space, and the size of the accommodation space is no longer reduced, and the reliability of the flexible screen is better.

[0028] In one possible implementation, the second support plate is provided with a second avoiding hole, and when the folding mechanism is in the unfolded state, the middle part of the third rotating end of the fourth connecting piece is located in the second avoiding hole, and together with the middle part of the third rotating end of the third connecting piece, the first support plate and the second support plate form the support surface. In this way, on the one hand, the problem that the third rotating end of the fourth connecting piece causes the folding mechanism and the electronic device to be relatively thick due to the lifting of the first support plate can be solved, so as to realize the thin type setting of the folding mechanism and the electronic device.

[0029] In a possible implementation, the second support plate is provided with a second avoiding hole, when the folding mechanism is in the folded state, the middle part of the third rotating end of the fourth connecting member is located in the second avoiding hole, and the middle part of the third rotating end of the third connecting member, the first support plate, and the second support plate jointly form the containing space. In this way, the third rotating end of the fourth connecting member no longer presses the containing space, and the size of the containing space is no longer reduced, and the reliability of the flexible screen is better.

[0030] In a possible implementation, when the folding mechanism is in the unfolded state, an edge of the third rotating end of the third connecting member close to the third rotating end of the fourth connecting member is a first edge, an edge of the third rotating end of the fourth connecting member close to the third rotating end of the third connecting member is a second edge, and the distance between the first edge and the second edge is less than or equal to 1.5 mm. In this way, when the third rotating end of the fourth connecting member and the third rotating end of the third connecting member, the first support plate, and the second support plate jointly form the support surface, the flatness of the support surface is improved, and a large concave area is avoided, so that when the second display area is touched, the second display area is not easily damaged or has a concave problem due to external force touch, and the reliability of the flexible screen is significantly improved.

[0031] In a possible implementation, the folding mechanism includes a synchronizing member, and the synchronizing member includes a base, a first transmission block, and a second transmission block, the first transmission block and the second transmission block are protruded from the base;

[0032] The base is slidingly connected to the main shaft, a part of the base is located between the main shaft and the first rotating end of the first connecting member, and another part of the base is located between the main shaft and the first rotating end of the second connecting member, the first transmission block is movably connected to the first rotating end of the first connecting member, and the second transmission block is movably connected to the first rotating end of the second connecting member.

[0033] It can be understood that, by movably connecting the first transmission block to the first rotating end of the first connecting member and movably connecting the second transmission block to the first rotating end of the second connecting member, the first connecting member and the second connecting member are kept in synchronous rotation during the movement of the folding mechanism, that is, they are kept in synchronous approaching or moving away from each other by using the synchronizing member. Since the first connecting member is rotationally connected to the first fixed frame fixedly connected to the first shell, and the second connecting member is rotationally connected to the second fixed frame fixedly connected to the second shell, the rotation of the first shell and the second shell relative to the main shaft is in good synchronism, and the mechanism operation experience of the folding mechanism and the electronic device is improved.

[0034] It can be understood that, due to the fact that a part of the base is located between the main shaft and the first rotating end of the first connecting member, and a part of the base is located between the main shaft and the first rotating end of the second connecting member, the first connecting member and the second connecting member can realize the limiting of the synchronous member in the Z-axis direction while realizing the control of the movement of the first shell and the second shell, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting member and the second connecting member have a multi-purpose effect.

[0035] In a possible implementation, the first rotating end of the first connecting member is provided with a first spiral groove, and the first rotating end of the second connecting member is provided with a second spiral groove.

[0036] The first transmission block and the second transmission block are both spiral-shaped, the first transmission block is arranged in the first spiral groove, and the second transmission block is arranged in the second spiral groove.

[0037] It can be understood that, through the cooperation of the first transmission block and the first spiral groove, and the cooperation of the second transmission block and the second spiral groove, the relative rotation of the first connecting member, the second connecting member and the main shaft can be converted into the relative sliding of the synchronous member and the main shaft. In this way, compared with the relative rotation movement relationship between the synchronous member and the main shaft, the synchronous member of the present embodiment can be arranged to be thinner, thereby being beneficial to the thin-type arrangement of the folding mechanism and the electronic device.

[0038] In a possible implementation, the synchronous member includes a guide block, the guide block is protruded from the base, and the guide block is arranged opposite to the first transmission block and the second transmission block; the main shaft is provided with a first guide groove, the guide block is arranged in the first guide groove, and the base is slidably connected to the main shaft through the guide block.

[0039] It can be understood that the guide block of the synchronous member can be located in the first guide groove of the main shaft. Through the relative movement of the two, the base is slidably connected to the main shaft through the guide block, that is, the synchronous member and the main shaft are slidably connected in the Y-axis direction. In this way, the two side walls of the first guide groove in the X-axis direction can limit the guide block of the synchronous member, thereby avoiding the movement of the synchronous member in the X-axis direction.

[0040] In a possible implementation, the folding mechanism includes a damping member, the damping member is arranged on the main shaft, and the damping member is used for applying a damping force to the first connecting member and / or the second connecting member.

[0041] It can be understood that the damping member can keep the first connecting member and the second connecting member in a relative position relationship relative to the main shaft, so that the first shell and the second shell can better keep the unfolded state or the closed state, and the use experience of the user is improved. In addition, the damping member can provide a certain resistance in the process of unfolding the electronic device to enter the open state or folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0042] In a possible implementation, the first rotating end of the first connecting member is provided with a first mounting space, and the first mounting space includes oppositely arranged first and second side walls; the first rotating end of the second connecting member is provided with a second mounting space, and the second mounting space includes oppositely arranged first and second side walls.

[0043] The damping member includes a first support, a second support, and an elastic member, the elastic member is connected between the first support and the second support, the first support and the second support are in sliding connection with the main shaft, and are located in the first mounting space and the second mounting space.

[0044] The elastic member is in a compressed state, the first support is located between the elastic member and the first side wall of the first mounting space and the first side wall of the second mounting space. The second support is located between the elastic member and the second side wall of the first mounting space and the second side wall of the second mounting space. The elastic member can extrude the first support toward the first side wall of the first mounting space and the first side wall of the second mounting space, and the elastic member can also extrude the second support toward the second side wall of the first mounting space and the second side wall of the second mounting space. In this way, a certain resistance is provided in the process of unfolding the folding mechanism to enter the open state or folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0045] In a possible implementation, the first rotating end of the first connecting member includes a first protrusion, the first protrusion is protruded from the first side wall of the first mounting space, the first rotating end of the second connecting member includes a second protrusion, the second protrusion is protruded from the first side wall of the second mounting space; the first support includes a first base plate, a first protruding block, and a second protruding block, the first protruding block and the second protruding block are protruded from a second surface of the first base plate in a spaced manner.

[0046] The first protrusion of the first connecting member and the first protruding block of the first support are staggered to form a clamping structure, and the second protrusion of the second connecting member and the second protruding block of the first support are staggered to form a clamping structure.

[0047] It can be understood that when the folding mechanism is in the unfolded state, the first rotating end of the first connecting piece forms a first clamping structure with the first support. When the folding mechanism is in the folded state, the first rotating end of the first connecting piece forms a second clamping structure with the first support. The first clamping structure and the second clamping structure can keep a certain relative positional relationship of the first connecting piece relative to the main shaft, so that when the folding mechanism is applied to the electronic device, the first shell and the second shell can better keep the unfolded state or the closed state, improving the user's experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0048] When the folding mechanism is in the unfolded state, the first rotating end of the second connecting piece forms a third clamping structure with the first support. When the folding mechanism is in the unfolded state, the first rotating end of the second connecting piece forms a fourth clamping structure with the first support. It can be understood that the third clamping structure and the fourth clamping structure can keep a certain relative positional relationship of the second connecting piece relative to the main shaft, so that the first shell and the second shell can better keep the unfolded state or the closed state, improving the user's experience. In addition, the third clamping structure and the fourth clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0049] In a possible implementation manner, the first rotating end of the first connecting piece includes a third protrusion protruding from a second side wall of the first mounting space, and the first rotating end of the second connecting piece includes a fourth protrusion protruding from a second side wall of the second mounting space; the second support includes a second base plate, a third protruding block and a fourth protruding block, the third protruding block and the fourth protruding block are protruding from a second surface of the second base plate at intervals.

[0050] The third protrusion of the first connecting piece and the third protruding block of the second support are staggered to form a clamping structure, and the fourth protrusion of the second connecting piece and the fourth protruding block of the second support are staggered to form a clamping structure.

[0051] It can be understood that when the folding mechanism is in the unfolded state, the first rotating end of the first connecting piece forms a first clamping structure with the first support and the second support. When the folding mechanism is in the folded state, the first rotating end of the first connecting piece forms a second clamping structure with the first support and the second support. It can be understood that the first clamping structure and the second clamping structure can keep a certain relative positional relationship of the first connecting piece relative to the main shaft, so that the first shell and the second shell can better maintain the unfolded state or the closed state, thereby improving the user experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0052] It can be understood that when the folding mechanism is in the unfolded state, the first rotating end of the first connecting piece forms a first clamping structure with the first support and the second support. When the folding mechanism is in the folded state, the first rotating end of the first connecting piece forms a second clamping structure with the first support and the second support. It can be understood that the first clamping structure and the second clamping structure can keep a certain relative positional relationship of the first connecting piece relative to the main shaft, so that the first shell and the second shell can better maintain the unfolded state or the closed state, thereby improving the user experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0053] In a possible implementation manner, the first protrusion of the first connecting piece, the first protrusion of the first support, the third protrusion of the first connecting piece, and the third protrusion of the second support are all arc-shaped. In this way, the cooperation structure formed by the first protrusion of the first connecting piece and the first protrusion of the first support, and the cooperation structure formed by the third protrusion of the first connecting piece and the third protrusion of the second support are relatively simple and occupy small space, so that the damping piece can be arranged to be thinner, thereby facilitating the thin design of the folding mechanism and the electronic device.

[0054] In a possible implementation manner, the first rotating end of the first connecting piece includes a first limiting block, and the first limiting block protrudes from a first side wall of the first mounting space. The first rotating end of the second connecting piece includes a second limiting block, and the second limiting block protrudes from a first side wall of the second mounting space.

[0055] Part of the first base plate is located between the main shaft and the first limiting block of the first rotating end of the first connecting piece, and part of the first base plate is located between the main shaft and the second limiting block of the first rotating end of the second connecting piece.

[0056] It can be understood that, since a part of the first substrate is located between the main shaft and the first limiting block of the first rotating end of the first connecting piece, and a part of the first substrate is located between the main shaft and the second limiting block of the first rotating end of the second connecting piece, the first connecting piece and the second connecting piece not only realize the control of the movement of the first shell and the second shell, but also realize the limiting of the first support in the Z-axis direction, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting piece and the second connecting piece have the effect of one thing with multiple uses.

[0057] In a possible implementation, the first rotating end of the first connecting piece includes a third limiting block, and the third limiting block is protruded from a second side wall of the first mounting space; and the first rotating end of the second connecting piece includes a fourth limiting block, and the fourth limiting block is protruded from a second side wall of the second mounting space.

[0058] A part of the second substrate is located between the main shaft and the third limiting block of the first rotating end of the first connecting piece, and a part of the second substrate is located between the main shaft and the fourth limiting block of the first rotating end of the second connecting piece.

[0059] It can be understood that, since a part of the second substrate is located between the main shaft and the third limiting block of the first rotating end of the first connecting piece, and a part of the second substrate is located between the main shaft and the fourth limiting block of the first rotating end of the second connecting piece, the first connecting piece and the second connecting piece not only realize the control of the movement of the first shell and the second shell, but also realize the limiting of the first support in the Z-axis direction, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting piece and the second connecting piece have the effect of one thing with multiple uses.

[0060] In a possible implementation, the first support includes a first fixed column, and the first fixed column is protruded from the first surface of the first substrate; and the first surface of the first substrate and the second surface of the first substrate are oppositely arranged.

[0061] The second support includes a second fixed column, and the second fixed column is protruded from the first surface of the second substrate; the first surface of the second substrate and the second surface of the second substrate are oppositely arranged; and the elastic member is a spring, one end of the elastic member is sleeved on the first fixed column, and the other end of the elastic member is sleeved on the second fixed column.

[0062] It can be understood that the structure of the elastic member in the implementation is simple. In addition, the connection mode of the elastic member, the first support and the second support is simple.

[0063] In a second aspect, the present application provides an electronic device. The electronic device comprises a first shell, a second shell, a flexible screen and the folding mechanism as described in the first aspect, the first fixing frame is fixedly connected with the first shell, and the second fixing frame is fixedly connected with the second shell.

[0064] The flexible screen comprises a first display area, a second display area and a third display area connected in sequence, the first display area is fixed on the first shell, and the third display area is fixed on the second shell; when the folding mechanism is in the unfolded state, the support surface supports the second display area; when the folding mechanism is in the folded state, the second display area is located in the containing space.

[0065] It can be understood that the folding mechanism of the present implementation mode can realize miniaturized and thin type setting, so when the folding mechanism is applied to the electronic device, the electronic device can also realize miniaturized and thin type setting.

[0066] In a third aspect, the present application provides a folding mechanism. The folding mechanism comprises a main shaft, a first connecting piece, a second connecting piece, a synchronization piece and a damping piece, the first rotating end of the first connecting piece and the first rotating end of the second connecting piece are movably connected with the main shaft;

[0067] The first rotating end of the first connecting piece is provided with a first spiral groove, and the first rotating end of the second connecting piece is provided with a second spiral groove;

[0068] The synchronization piece comprises a base, a first transmission block and a second transmission block, the first transmission block and the second transmission block are protruded from the base;

[0069] The base is slidably connected with the main shaft, a part of the base is located between the main shaft and the first rotating end of the first connecting piece, and another part of the base is located between the main shaft and the first rotating end of the second connecting piece, the first transmission block and the second transmission block are both in spiral shape, the first transmission block is arranged in the first spiral groove, and the second transmission block is arranged in the second spiral groove;

[0070] The first rotating end of the first connecting piece is provided with a first mounting space, the first mounting space is located on one side of the first spiral groove, and the first mounting space comprises a first side wall and a second side wall arranged oppositely;

[0071] The first rotating end of the second connecting piece is provided with a second mounting space, the second mounting space is located on one side of the second spiral groove, and the second mounting space comprises a first side wall and a second side wall arranged oppositely;

[0072] The damping member comprises a first support, a second support and an elastic member, the elastic member is connected between the first support and the second support, the first support and the second support are slidingly connected with the main shaft and located in the first mounting space and the second mounting space;

[0073] The elastic member is in a compressed state, the first support is located between the elastic member and the first side wall of the first mounting space and the first side wall of the second mounting space. The second support is located between the elastic member and the second side wall of the first mounting space and the second side wall of the second mounting space. The elastic member can push the first support to the first side wall of the first mounting space and the first side wall of the second mounting space, and can also push the second support to the second side wall of the first mounting space and the second side wall of the second mounting space.

[0074] It can be understood that, compared with the folding mechanism in which the synchronous member and the damping member are separately arranged, the synchronous member and the damping member of the embodiment can form a synchronous damping folding module in one piece with the first connecting member, the second connecting member and the main shaft. The synchronous damping folding module has a smaller volume, which is conducive to the miniaturization of the folding mechanism, thereby saving the internal space of the electronic device. In addition, the synchronous damping folding module in one piece can reduce the manufacturing cost of the folding mechanism.

[0075] It can be understood that, by cooperation of the first transmission block and the first spiral groove, and cooperation of the second transmission block and the second spiral groove, the relative rotation of the first connecting member, the second connecting member and the main shaft can be converted into the relative sliding of the synchronous member and the main shaft. In this way, compared with the relative rotation movement relationship between the synchronous member and the main shaft, the synchronous member of the embodiment can be made thinner, thereby facilitating the thinness of the folding mechanism and the electronic device.

[0076] It can be understood that, by arranging the first transmission block to be movably connected to the first rotating end of the first connecting member and the second transmission block to be movably connected to the first rotating end of the second connecting member, the first connecting member and the second connecting member are kept synchronous rotation in the movement process of the folding mechanism by the synchronous member, that is, synchronous approach or mutual distancing. Since the first connecting member is rotationally connected to the first fixed frame fixedly connected with the first shell, and the second connecting member is rotationally connected to the second fixed frame fixedly connected with the second shell, the rotation action of the first shell and the second shell relative to the main shaft is good in synchronization, thereby improving the mechanism operation experience of the folding mechanism and the electronic device.

[0077] It can be understood that, since a part of the base is located between the main shaft and the first rotating end of the first connecting piece, and a part of the base is located between the main shaft and the first rotating end of the second connecting piece, the first connecting piece and the second connecting piece realize the limiting of the synchronous piece in the Z-axis direction while realizing the control of the movement of the first shell and the second shell, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting piece and the second connecting piece have a multi-purpose effect.

[0078] It can be understood that, through the cooperation of the first support, the second support and the elastic piece, the first connecting piece and the second connecting piece can maintain a certain relative positional relationship with the main shaft, so that the first shell and the second shell can better maintain the flat state or the closed state, and the user's use experience is improved. In addition, the damping piece can provide certain resistance during the unfolding of the electronic device to enter the open state and the folding to release the flat state, so that the user can experience a better mechanism operation feeling.

[0079] In a possible implementation, the first rotating end of the first connecting piece includes a first protrusion, the first protrusion is protruded on a first side wall of the first mounting space, the first rotating end of the second connecting piece includes a second protrusion, the second protrusion is protruded on a first side wall of the second mounting space; the first support includes a first base plate, a first protruding block and a second protruding block, the first protruding block and the second protruding block are protruded on a second surface of the first base plate in a spaced manner;

[0080] The first protrusion of the first connecting piece and the first protruding block of the first support are staggered to form a clamping structure, and the second protrusion of the second connecting piece and the second protruding block of the first support are staggered to form a clamping structure.

[0081] In a possible implementation, the first rotating end of the first connecting piece includes a third protrusion, the third protrusion is protruded on a second side wall of the first mounting space, the first rotating end of the second connecting piece includes a fourth protrusion, the fourth protrusion is protruded on a second side wall of the second mounting space;

[0082] The second support includes a second base plate, a third protruding block and a fourth protruding block, the third protruding block and the fourth protruding block are protruded on a second surface of the second base plate in a spaced manner;

[0083] The third protrusion of the first connecting piece and the third protruding block of the second support are staggered to form a clamping structure, and the fourth protrusion of the second connecting piece and the fourth protruding block of the second support are staggered to form a clamping structure.

[0084] It can be understood that when the folding mechanism is in the unfolded state, the first rotating end of the first connecting piece forms a first clamping structure with the first support and the second support. When the folding mechanism is in the folded state, the first rotating end of the first connecting piece forms a second clamping structure with the first support and the second support. It can be understood that the first clamping structure and the second clamping structure can keep a certain relative positional relationship of the first connecting piece relative to the main shaft, so that the first shell and the second shell can better maintain the unfolded state or the closed state, thereby improving the user experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0085] It can be understood that when the folding mechanism is in the unfolded state, the first rotating end of the first connecting piece forms a first clamping structure with the first support and the second support. When the folding mechanism is in the folded state, the first rotating end of the first connecting piece forms a second clamping structure with the first support and the second support. It can be understood that the first clamping structure and the second clamping structure can keep a certain relative positional relationship of the first connecting piece relative to the main shaft, so that the first shell and the second shell can better maintain the unfolded state or the closed state, thereby improving the user experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0086] In a possible implementation manner, the first protrusion of the first connecting piece, the first protruding block of the first support, the third protrusion of the first connecting piece, and the third protruding block of the second support are all arc-shaped. In this way, the cooperation structure formed by the first protrusion of the first connecting piece and the first protruding block of the first support, and the cooperation structure formed by the third protrusion of the first connecting piece and the third protruding block of the second support are relatively simple and occupy small space, so that the damping piece can be arranged to be thinner, thereby facilitating the thinness arrangement of the folding mechanism and the electronic device.

[0087] In a possible implementation manner, the first rotating end of the first connecting piece includes a first limiting block protruding from a first side wall of the first mounting space, and the first rotating end of the second connecting piece includes a second limiting block protruding from a first side wall of the second mounting space.

[0088] Part of the first base plate is located between the main shaft and the first limiting block of the first rotating end of the first connecting piece, and part of the first base plate is located between the main shaft and the second limiting block of the first rotating end of the second connecting piece.

[0089] It can be understood that, due to the fact that a part of the first substrate is located between the main shaft and the first limiting block of the first rotating end of the first connecting piece, and a part of the first substrate is located between the main shaft and the second limiting block of the first rotating end of the second connecting piece, the first connecting piece and the second connecting piece not only realize the control of the movement of the first shell and the second shell, but also realize the limiting of the first support in the Z-axis direction, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting piece and the second connecting piece have the effect of one thing serving multiple purposes.

[0090] In a possible implementation, the first rotating end of the first connecting piece includes a third limiting block, and the third limiting block is protruded from a second side wall of the first mounting space; the first rotating end of the second connecting piece includes a fourth limiting block, and the fourth limiting block is protruded from a second side wall of the second mounting space.

[0091] A part of the second substrate is located between the main shaft and the third limiting block of the first rotating end of the first connecting piece, and a part of the second substrate is located between the main shaft and the fourth limiting block of the first rotating end of the second connecting piece.

[0092] It can be understood that, due to the fact that a part of the second substrate is located between the main shaft and the third limiting block of the first rotating end of the first connecting piece, and a part of the second substrate is located between the main shaft and the fourth limiting block of the first rotating end of the second connecting piece, the first connecting piece and the second connecting piece not only realize the control of the movement of the first shell and the second shell, but also realize the limiting of the first support in the Z-axis direction, so that the folding mechanism has high integration, simple overall connection relationship and high mechanism reliability. The first connecting piece and the second connecting piece have the effect of one thing serving multiple purposes.

[0093] In a possible implementation, the first support includes a first fixed column, and the first fixed column is protruded from a first surface of the first substrate; the second support includes a second fixed column, and the second fixed column is protruded from a first surface of the second substrate.

[0094] The elastic member is a spring, one end of the elastic member is sleeved on the first fixed column, and the other end of the elastic member is sleeved on the second fixed column.

[0095] It can be understood that the structure of the elastic member in the implementation is simple. In addition, the connection mode of the elastic member with the first support and the second support is simple.

[0096] In a possible implementation, the synchronization member includes a guide block, and the guide block is protruded from the base. The guide block is arranged opposite to the first transmission block and the second transmission block.

[0097] The main shaft is provided with a first guide groove, and the guide block is arranged in the first guide groove, and the base is slidably connected to the main shaft through the guide block.

[0098] It can be understood that the guide block of the synchronizing member can be located in the first guide groove of the main shaft. Through the relative movement of the two, the base is slidably connected to the main shaft through the guide block, that is, the synchronizing member and the main shaft are slidably connected in the Y-axis direction, that is. The two side walls of the first guide groove in the X-axis direction can limit the guide block of the synchronizing member, thereby avoiding the movement of the synchronizing member in the X-axis direction.

[0099] In a fourth aspect, the application provides an electronic device. The electronic device comprises a first shell, a second shell, a flexible screen and a folding mechanism as described in the third aspect above; the second rotating end of the first connecting member is movably connected to the first shell, and the second rotating end of the second connecting member is movably connected to the second shell.

[0100] The flexible screen comprises a first display area, a second display area and a third display area connected in sequence, the first display area is fixed to the first shell, and the third display area is fixed to the second shell.

[0101] It can be understood that, since the synchronizing member and the damping member of the embodiment can form an integrated synchronous damping folding module with the first connecting member, the second connecting member and the main shaft, the volume of the synchronous damping folding module of the folding mechanism is smaller, which is conducive to the miniaturization of the folding mechanism, thereby saving the internal space of the electronic device, that is, conducive to the miniaturization of the electronic device. In addition, the integrated synchronous damping folding module can reduce the manufacturing cost of the folding mechanism, that is, the manufacturing cost of the electronic device can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0102] FIG. 1 is a structural schematic diagram of an electronic device in a flat state according to an embodiment of the application;

[0103] FIG. 2 is a partial cross-sectional view of the electronic device shown in FIG. 1 at line A-A according to an embodiment;

[0104] FIG. 3 is a structural schematic diagram of the electronic device shown in FIG. 1 in a folded state according to an embodiment;

[0105] FIG. 4 is a partial cross-sectional view of the electronic device shown in FIG. 3 at line B-B according to an embodiment;

[0106] FIG. 5 is a partial exploded view of an embodiment of the electronic device shown in FIG. 1;

[0107] Figure 6 is a partially exploded view of the folding mechanism, the first housing, and the second housing shown in Figure 5 in one embodiment;

[0108] Figure 7 is a partially exploded view of one embodiment of the folding mechanism shown in Figure 6;

[0109] Figure 8 is an enlarged view of one embodiment of the main shaft shown in Figure 7 at C;

[0110] Figure 9 is a structural view of the main shaft shown in Figure 7 at another angle;

[0111] Figure 10 is a partially exploded view of one embodiment of the first connecting assembly shown in Figure 7;

[0112] Figure 11 is a structural view of one embodiment of the first and second fixing frames shown in Figure 10;

[0113] Figure 12 is a structural view of the first and second fixing frames shown in Figure 11 at another angle;

[0114] Figure 13 is a structural view of one embodiment of the first and second connecting members shown in Figure 10;

[0115] Figure 14 is a structural view of the first and second connecting members shown in Figure 13 at another angle;

[0116] Figure 15 is a partially structural view of one embodiment of the folding mechanism shown in Figure 6;

[0117] Figure 16 is a partially cross-sectional view of one embodiment of the partially folding mechanism shown in Figure 15 at D1-D1 line;

[0118] Figure 17 is a partially cross-sectional view of one embodiment of the partially folding mechanism shown in Figure 15 at D2-D2 line;

[0119] Figure 18 is a partially cross-sectional view of one embodiment of the partially folding mechanism shown in Figure 15 at D3-D3 line;

[0120] Figure 19 is a structural view of one embodiment of the third and fourth connecting members shown in Figure 10;

[0121] Figure 20 is a structural view of the third and fourth connecting members shown in Figure 19 at another angle;

[0122] Figure 21 is a partially structural view of one embodiment of the folding mechanism shown in Figure 6;

[0123] Figure 22 is a partially cross-sectional view of one embodiment of the partially folding mechanism shown in Figure 21 at E1-E1 line;

[0124] Figure 23 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 21 at line E2-E2;

[0125] Figure 24 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 21 at line E3-E3;

[0126] Figure 25 is a partial structural schematic view III of an embodiment of the folding mechanism shown in Figure 6;

[0127] Figure 26 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 25 at line F1-F1;

[0128] Figure 27 is a structural schematic view of an embodiment of the partial folding mechanism shown in Figure 25 in a folded state;

[0129] Figure 28 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 27 at line G1-G1;

[0130] Figure 29 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 25 at line F2-F2;

[0131] Figure 30 is a partial cross-sectional view of an embodiment of the partial folding mechanism shown in Figure 27 at line G2-G2;

[0132] Figure 31 is an exploded schematic view of an embodiment of the synchronizer, the first connecting member, and the second connecting member shown in Figure 10;

[0133] Figure 32 is an exploded schematic view of the synchronizer, the first connecting member, and the second connecting member shown in Figure 31 from another angle;

[0134] Figure 33 is a partial structural schematic view I of an embodiment of the first connecting assembly shown in Figure 7;

[0135] Figure 34 is a structural schematic view of the partial first connecting assembly shown in Figure 33 in a folded state;

[0136] Figure 35 is a partial cross-sectional view of an embodiment of the folding mechanism shown in Figure 6 at line H-H;

[0137] Figure 36 is a partial cross-sectional view of an embodiment of the electronic device shown in Figure 3 at line I-I;

[0138] Figure 37 is a structural schematic view of an embodiment of the damper shown in Figure 10;

[0139] Figure 38 is a partial exploded schematic view II of an embodiment of the first connecting assembly shown in Figure 7;

[0140] Figure 39 is a partial cross-sectional view of one embodiment of the folding mechanism shown in Figure 6 taken at line J-J;

[0141] Figure 40 is a partial cross-sectional view of one embodiment of the electronic device shown in Figure 3 taken at line K-K;

[0142] Figure 41 is a partial structural schematic view of one embodiment of the first connecting assembly shown in Figure 7;

[0143] Figure 42 is a structural schematic view of the partial first connecting assembly shown in Figure 41 in a folded state;

[0144] Figure 43 is an exploded schematic view of one embodiment of the first connecting member shown in Figure 10;

[0145] Figure 44 is an assembled schematic view of one embodiment of the first body member and the first disassembling member shown in Figure 43. DETAILED DESCRIPTION

[0146] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0147] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection", and "joint" should be understood in a broad sense, for example, "connection" can be detachable connection or non-detachable connection; can be direct connection or indirect connection through an intermediate medium; can be electrical connection or mechanical connection. Among them, "fixed connection" refers to the relative position relationship after being connected does not change. "Rotary connection" refers to the relative rotation after being connected. "Sliding connection" refers to the relative sliding after being connected. "Movable connection" refers to the relative movement after being connected. In addition, the two components are integrated by the one-piece molding process, which means that during the formation of one of the two components, the component is connected with the other component, and the two components do not need to be connected by reprocessing (such as bonding, welding, buckling connection, screw connection) method. Component A and component B are relatively arranged, which means that component A projects a projection C along a target direction, component B projects a projection D along the target direction, and projection C and projection D can at least mostly overlap. In some embodiments, the mostly overlap can be any of the following cases: projection C is completely located in projection D. Or, projection D is completely located in projection C. Or, projection C and projection D intersect with each other, and the intersection area of projection C and projection D accounts for more than 50% of projection C or projection D.

[0148] The orientation terms mentioned in the embodiments of the present application, such as "top", "bottom", "inner", "outer" and the like, are only the directions of the drawings, therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the present application, and are not indicative or suggestive of the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0149] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", and the like are generally of a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in an "or" relationship. "Multiple" means at least two.

[0150] Fig. 1 is a structural schematic diagram of an electronic device 1000 in a flat state according to an embodiment of the present application. Fig. 2 is a partial cross-sectional view of the electronic device 1000 shown in Fig. 1 along line A-A according to an embodiment of the present application. Fig. 3 is a structural schematic diagram of the electronic device 1000 shown in Fig. 1 in a folded state according to an embodiment of the present application. Fig. 4 is a partial cross-sectional view of the electronic device 1000 shown in Fig. 3 along line B-B according to an embodiment of the present application.

[0151] As shown in Figs. 1 to 4, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 can be a mobile phone, a tablet computer, a personal computer, a notebook computer, a vehicle-mounted device, or a wearable device (such as a smart bracelet), etc. The embodiments of the present application take the electronic device 1000 as a mobile phone for detailed description.

[0152] For ease of description, by way of example, the thickness direction of the electronic device 1000 is defined as the Z-axis direction, and the extension direction of the rotation axis of the electronic device 1000 is defined as the Y-axis direction. The direction perpendicular to the Y-axis direction and the Z-axis direction is the X-axis direction. It can be understood that the coordinate system of the electronic device 1000 can also be flexibly set according to specific needs.

[0153] It can be understood that in the present embodiment, the direction of the rotation axis of the electronic device 1000 is the Y-axis direction, that is, the electronic device 1000 can be relatively unfolded or folded along the Y-axis direction. In this way, when the electronic device 1000 is in a folded state, the size of the electronic device 1000 in the X-axis direction becomes smaller. The present embodiment is described by taking the direction of the rotation axis of the electronic device 1000 as the Y-axis direction as an example, at this time, the electronic device 1000 can be folded left and right, and the folding and unfolding of the electronic device 1000 affects the length dimension of the electronic device 1000. In some other embodiments, the rotation axis of the electronic device 1000 can also be the X-axis direction, that is, the electronic device 1000 can be relatively unfolded or folded along the X-axis direction. At this time, the electronic device 1000 can be folded up and down, and the folding and unfolding of the electronic device 1000 affects the width dimension of the electronic device 1000.

[0154] FIG. 5 is a partially exploded view of an embodiment of the electronic device 1000 shown in FIG. 1. FIG. 6 is a partially exploded view of the folding mechanism 100, the first housing 300, and the second housing 400 shown in FIG. 5 in an embodiment.

[0155] As shown in FIGS. 5 and 6, the electronic device 1000 includes a folding mechanism 100, a flexible screen 200, a first housing 300, and a second housing 400. The flexible screen 200 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, or a quantum dot light emitting diode (QLED) display screen, etc. In addition, the folding mechanism 100 can be an inner folding mechanism or an outer folding mechanism. The inner folding mechanism can be a mechanism that folds at least part of the flexible screen 200 between the first housing 300 and the second housing 400. The outer folding mechanism can be a mechanism that folds at least part of the flexible screen 200 outside the first housing 300 and the second housing 400. The present application does not limit the specific structure of the folding mechanism 100. In the present embodiment, the folding mechanism 100 is described as an example of an inner folding mechanism. The thickness direction of the folding mechanism 100 can be the Z-axis direction, the length direction of the folding mechanism 100 can be the Y-axis direction, and the width direction of the folding mechanism 100 can be the X-axis direction. In other embodiments, it can be understood that the coordinate system of the folding mechanism 100 can also be flexibly set according to specific needs.

[0156] As shown in FIGS. 5 and 6, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other.

[0157] As shown in FIGS. 1 and 2, when the first housing 300 and the second housing 400 are unfolded relative to each other to a flat state, the electronic device 1000 is in a flat state, and the first housing 300 and the second housing 400 can be 180°. In other embodiments, the first housing 300 and the second housing 400 can also have a slight deviation from 180°, such as 165°, 177°, or 185°, etc.

[0158] As shown in FIGS. 3 and 4, when the first housing 300 and the second housing 400 are folded relative to each other to the closed state, the electronic device 1000 is in the folded state, the first housing 300 and the second housing 400 can be folded against each other, and there can be no large gap between the first housing 300 and the second housing 400. In this way, the appearance experience of the electronic device 1000 is better, and the performance of waterproofing, dustproofing, and foreign matter prevention is better. The folding of the first housing 300 and the second housing 400 includes the case where the two abut against each other, and can also include the case where there is a small gap between the two. When there is a small gap between the first housing 300 and the second housing 400, some foreign matter outside the electronic device 1000 will not enter between the first housing 300 and the second housing 400 through the gap.

[0159] The first housing 300 and the second housing 400 can also be unfolded or folded relative to each other to an intermediate state, so that the electronic device 1000 is in the intermediate state, and the intermediate state can be any state between the unfolded state and the folded state.

[0160] Referring to FIG. 5, and in combination with FIGS. 1 to 4, the flexible screen 200 includes a first display area 201, a second display area 202, and a third display area 203. The second display area 202 is connected between the first display area 201 and the third display area 203. FIGS. 1, 2, and 5 all schematically distinguish the first display area 201, the second display area 202, and the third display area 203 by dashed lines. The first display area 201 of the flexible screen 200 can be fixed to the first housing 300. The third display area 203 can be fixed to the second housing 400. During the unfolding or folding of the first housing 300 and the second housing 400 relative to each other, the first housing 300 can drive the first display area 201 to move, the second housing 400 can drive the third display area 203 to move, the first display area 201 and the third display area 203 unfold or fold relative to each other, and the second display area 202 can deform.

[0161] It can be understood that, since the first display area 201 is fixed to the first housing 300, the third display area 203 is fixed to the second housing 400, and the first housing 300 and the second housing 400 unfold or fold relative to each other, the relative unfolding and folding actions between the first display area 201 and the third display area 203 can be accurately controlled, so that the folding process and movement form of the flexible screen 200 are controllable, and the reliability is higher.

[0162] As shown in FIG. 1 and FIG. 2, when the electronic device 1000 is in the unfolded state, the flexible screen 200 can be in the unfolded state. Exemplarily, the first display area 201, the second display area 202 and the third display area 203 of the flexible screen 200 can be 180°. In other embodiments, the first display area 201, the second display area 202 and the third display area 203 can also have a slight deviation from 180°, such as 165°, 177° or 185°, etc. At this time, the flexible screen 200 has a continuous large-area display area, that is, the flexible screen 200 can realize large-screen display, and the user experience is better.

[0163] Exemplarily, when the electronic device 1000 is in the unfolded state, at least part of the folding mechanism 100 can be used to support the second display area 202. In this way, when the second display area 202 is subjected to pressing force, extrusion force or impact force, etc., the folding mechanism 100 can be used to improve the pressure resistance and impact resistance of the second display area 202, that is, to ensure that the second display area 202 is not prone to problems such as concave.

[0164] As shown in FIG. 3 and FIG. 4, when the electronic device 1000 is in the folded state, the flexible screen 200 is in the folded state. Exemplarily, the first display area 201 and the third display area 203 of the flexible screen 200 are close to each other. The second display area 202 is in a bent shape. At this time, the flexible screen 200 can be roughly in the shape of a "water droplet". In addition, the flexible screen 200 is located in the space surrounded by the first housing 300, the folding mechanism 100 and the second housing 400. The first display area 201 and the third display area 203 can be located between the first housing 300 and the second housing 400. At this time, the planar size of the electronic device 1000 is small (has a small width size), which is convenient for the user to carry and store.

[0165] FIG. 7 is a partially exploded schematic view of an embodiment of the folding mechanism 100 shown in FIG. 6.

[0166] Please refer to FIG. 7, in combination with FIG. 5 and FIG. 6, the folding mechanism 100 includes a main shaft 1, a first connecting assembly 2, a second connecting assembly 3, a first support plate 4 and a second support plate 5. Wherein, the length extension direction of the main shaft 1 can be the Y-axis direction. It can be understood that FIG. 5 to FIG. 7 only schematically show some components included in the folding mechanism 100, and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 5 to FIG. 7.

[0167] Exemplarily, the main shaft 1 is located between the first shell 300 and the second shell 400. The first connecting assembly 2 connects the first shell 300, the main shaft 1 and the second shell 400. The second connecting assembly 3 connects the first shell 300, the main shaft 1 and the second shell 400. Exemplarily, the first connecting assembly 2 and the second connecting assembly 3 can be arranged at intervals in the length extension direction of the main shaft 1 (i.e. the Y-axis direction), for example, can be connected to the top and bottom of the main shaft 1 respectively. It can be understood that the first connecting assembly 2 and the second connecting assembly 3 can be mainly used to relatively unfold or fold the first shell 300 and the second shell 400.

[0168] It can be understood that the second connecting assembly 3 and the first connecting assembly 2 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the embodiment, the second connecting assembly 3 and the first connecting assembly 2 are symmetrical structures, the basic design of the component structure of the second connecting assembly 3, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can refer to the related solutions of the first connecting assembly 2, while allowing the second connecting assembly 3 and the first connecting assembly 2 to be slightly different in the detailed structure or position arrangement of the components. Details are not described here. Hereinafter, the structure of the first connecting assembly 2 will be described as an example.

[0169] In other embodiments, the folding mechanism 100 can further include a third connecting assembly (not shown), a fourth connecting assembly (not shown), …, an Nth connecting assembly (not shown). Wherein, N is an integer greater than 2. The third connecting assembly, the fourth connecting assembly, …, the Nth connecting assembly can connect the first shell 300, the main shaft 1 and the second shell 400. The third connecting assembly, the fourth connecting assembly, …, the Nth connecting assembly can cooperate with the first connecting assembly 2 and the second connecting assembly 3 to better enable the first shell 300 and the second shell 400 to be relatively unfolded or folded.

[0170] Please refer to FIG. 7, and combine FIG. 5 and FIG. 6, the first support plate 4 can be fixed to the first connecting assembly 2 and the second connecting assembly 3. The second support plate 5 can be fixed to the first connecting assembly 2 and the second connecting assembly 3.

[0171] Please refer to FIG. 2, and combine FIG. 5 and FIG. 6, when the first shell 300 and the second shell 400 are relatively unfolded to the unfolded state (i.e. the electronic device 1000 is in the unfolded state), the first support plate 4 and the second support plate 5 are opened away from each other, and the first support plate 4 and the second support plate 5 can form a support surface 100a, which supports the second display area 202 of the flexible screen 200, so that when the second display area 202 is touched, the second display area 202 is not easy to be damaged or have a pit problem due to external force touch, thereby significantly improving the reliability of the flexible screen 200.

[0172] Exemplarily, when the electronic device 1000 is in the unfolded state, the first support plate 4 and the second support plate 5 can be flush. At this time, the flatness of the flexible screen 200 is better, and the user's experience is higher.

[0173] Exemplarily, the first support plate 4 and the second support plate 5 can be fixedly connected with the second display area 202 of the flexible screen 200 by bonding or other fixing methods, or the first support plate 4 and the second support plate 5 can not be connected with the second display area 202 of the flexible screen 200.

[0174] Please refer to FIG. 4, and combine FIG. 5 and FIG. 6, when the electronic device 1000 is in the folded state, the first support plate 4 and the second support plate 5 are close to each other, the first support plate 4 and the second support plate 5 can be oppositely arranged, and the main shaft 1, the first support plate 4 and the second support plate 5 can enclose at least part of the accommodating space 100b. The second display area 202 of the flexible screen 200 can be located in the accommodating space 100b.

[0175] Exemplarily, the end of the first support plate 4 away from the main shaft 1 and the end of the second support plate 5 away from the main shaft 1 are close to each other. The first display area 201 and the third display area 203 of the flexible screen 200 can be close to each other, or even can be attached to each other. The flexible screen 200 can be in the shape of "water drop".

[0176] It can be understood that, compared with the scheme that the folding mechanism 100 includes three support plates or more support plates, and utilizes the three support plates or more support plates to commonly support the second display area 202 of the flexible screen 200 when the electronic device 1000 is in the unfolded state, and encloses the accommodating space 100b when the electronic device 1000 is in the folded state, in the embodiment, the folding mechanism 100 includes the first support plate 4 and the second support plate 5, and utilizes the first support plate 4 and the second support plate 5 to commonly support the second display area 202 of the flexible screen 200 when the electronic device 1000 is in the unfolded state, and encloses the accommodating space 100b when the electronic device 1000 is in the folded state. The number of components of the folding mechanism 100 of the embodiment is less, the cooperation relationship and cooperation position are simple, and the constituent components are easy to manufacture and assemble, thereby on the one hand, it is beneficial to simplify the structure of the folding mechanism 100, so as to realize the miniaturization of the folding mechanism 100, and on the other hand, it is beneficial to reduce the cost investment of the folding mechanism 100, and it is easier to mass produce.

[0177] Referring to FIG. 7, in combination with FIG. 5 and FIG. 6, the main shaft 1 comprises a first end portion 1a, a middle portion 1b and a second end portion 1c connected in sequence. The first end portion 1a of the main shaft 1 can be connected with the first connecting assembly 2. The second end portion 1c of the main shaft 1 can be connected with the second connecting assembly 3. It can be understood that the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 are symmetrical structure, the basic design of the component structure of the second end portion 1c of the main shaft 1, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can be referred to the related solutions of the first end portion 1a of the main shaft 1, while allowing the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 to be slightly different in the detailed structure or position arrangement of the components. Details are not described here. Hereinafter, the structure of the first end portion 1a of the main shaft 1 will be described as an example.

[0178] In other embodiments, when the folding mechanism 100 comprises more connecting assemblies. At this time, the middle portion 1b of the main shaft 1 can be used to connect with other connecting assemblies. In this way, it is beneficial to improve the stability of the folding mechanism 100.

[0179] FIG. 8 is an enlarged schematic view of one embodiment of the main shaft 1 at C shown in FIG. 7. FIG. 9 is a schematic view of the structure of the main shaft 1 at another angle shown in FIG. 7.

[0180] As shown in FIG. 8 and FIG. 9, for example, the first end portion 1a of the main shaft 1 is provided with a first arc-shaped groove 11 and a second arc-shaped groove 12 arranged at intervals. For example, the first arc-shaped groove 11 and the second arc-shaped groove 12 of the main shaft 1 can be arranged at intervals along the Y-axis direction. The first arc-shaped groove 11 and the second arc-shaped groove 12 of the main shaft 1 can be communicated.

[0181] As shown in FIG. 8 and FIG. 9, for example, the first end portion 1a of the main shaft 1 is also provided with a third arc-shaped groove 13 and a fourth arc-shaped groove 14 arranged at intervals. For example, the third arc-shaped groove 13 and the fourth arc-shaped groove 14 of the main shaft 1 can be arranged at intervals along the Y-axis direction. The third arc-shaped groove 13 and the fourth arc-shaped groove 14 of the main shaft 1 can be communicated.

[0182] In one embodiment, the first arc-shaped groove 11 and the third arc-shaped groove 13 of the main shaft 1 can be arranged at intervals along the X-axis direction. For example, the first arc-shaped groove 11 and the third arc-shaped groove 13 of the main shaft 1 can be symmetrically arranged. In other embodiments, the relative positions of the first arc-shaped groove 11 and the third arc-shaped groove 13 of the main shaft 1 are not specifically limited.

[0183] In an embodiment, the second arc-shaped slot 12 and the fourth arc-shaped slot 14 of the main shaft 1 can be arranged in the X-axis direction. For example, the second arc-shaped slot 12 and the fourth arc-shaped slot 14 of the main shaft 1 can be symmetrically arranged. In other embodiments, the relative positions of the second arc-shaped slot 12 and the fourth arc-shaped slot 14 of the main shaft 1 are not specifically limited.

[0184] As shown in FIGS. 8 and 9, for example, the first end portion la of the main shaft 1 is further provided with a fifth arc-shaped slot 15 and a sixth arc-shaped slot 16 arranged in a spaced manner. The fifth arc-shaped slot 15 of the main shaft 1 is located on the side of the second arc-shaped slot 12 of the main shaft 1 away from the first arc-shaped slot 11 of the main shaft 1. The sixth arc-shaped slot 16 of the main shaft 1 is located on the side of the fifth arc-shaped slot 15 of the main shaft 1 away from the second arc-shaped slot 12 of the main shaft 1. The fifth arc-shaped slot 15 and the sixth arc-shaped slot 16 of the main shaft 1 can be arranged in the Y-axis direction. The fifth arc-shaped slot 15 and the sixth arc-shaped slot 16 of the main shaft 1 can be in communication.

[0185] As shown in FIGS. 8 and 9, for example, the first end portion la of the main shaft 1 is further provided with a seventh arc-shaped slot 17 and an eighth arc-shaped slot 18 arranged in a spaced manner. The seventh arc-shaped slot 17 of the main shaft 1 can be located on the side of the fourth arc-shaped slot 14 of the main shaft 1 away from the third arc-shaped slot 13 of the main shaft 1. The eighth arc-shaped slot 18 of the main shaft 1 can be located on the side of the seventh arc-shaped slot 17 of the main shaft 1 away from the fourth arc-shaped slot 14 of the main shaft 1. The seventh arc-shaped slot 17 and the eighth arc-shaped slot 18 of the main shaft 1 can be in communication.

[0186] In an embodiment, the seventh arc-shaped slot 17 and the fifth arc-shaped slot 15 of the main shaft 1 can be arranged in the X-axis direction. For example, the seventh arc-shaped slot 17 and the fifth arc-shaped slot 15 of the main shaft 1 can be symmetrically arranged. In other embodiments, the relative positions of the seventh arc-shaped slot 17 and the fifth arc-shaped slot 15 of the main shaft 1 are not specifically limited.

[0187] In an embodiment, the positional relationship between the eighth arc-shaped slot 18 and the sixth arc-shaped slot 16 of the main shaft 1 can refer to the positional relationship between the seventh arc-shaped slot 17 and the fifth arc-shaped slot 15 of the main shaft 1. Details are not repeated here.

[0188] In an embodiment, the main shaft 1 can further be provided with a protrusion (not shown in the figure). The protrusion can be used to limit the first connecting assembly 2, prevent the first connecting assembly 2 from accidentally detaching from the main shaft 1, and improve the connection reliability and movement reliability of the first connecting assembly 2 and the main shaft 1, so that the folding mechanism 100 has higher reliability.

[0189] FIG. 10 is a partially exploded schematic view I of an embodiment of the first connecting assembly 2 shown in FIG. 7.

[0190] As shown in FIG. 10, the first connecting assembly 2 includes a first fixing frame 21, a second fixing frame 22, a first connecting piece 23, a second connecting piece 24, a third connecting piece 25, a fourth connecting piece 26, a synchronizing piece 27, and a damping piece 28. It can be understood that FIG. 10 and the relevant drawings hereinafter only schematically show some components included in the first connecting assembly 2, and the actual shape, actual size, actual position, and actual structure of these components are not limited by FIG. 10 and the drawings hereinafter. In other embodiments, the first connecting assembly 2 can have more or fewer components. For example, the first connecting assembly 2 can also not include the synchronizing piece 27 and / or the damping piece 28.

[0191] FIG. 11 is a structural schematic view of an embodiment of the first fixing frame 21 and the second fixing frame 22 shown in FIG. 10. FIG. 12 is a structural schematic view of the first fixing frame 21 and the second fixing frame 22 shown in FIG. 11 from another angle.

[0192] As shown in FIGS. 11 and 12, for example, the first fixing frame 21 is provided with a first arc-shaped slot 211 and a second arc-shaped slot 212 arranged at intervals. For example, the first arc-shaped slot 211 and the second arc-shaped slot 212 of the first fixing frame 21 can be arranged at intervals along the Y-axis direction. The first arc-shaped slot 211 and the second arc-shaped slot 212 of the first fixing frame 21 can be communicated.

[0193] As shown in FIGS. 11 and 12, for example, the first fixing frame 21 is further provided with a third arc-shaped slot 213. The third arc-shaped slot 213 of the first fixing frame 21 can be located on a side of the second arc-shaped slot 212 of the first fixing frame 21 away from the first arc-shaped slot 211 of the first fixing frame 21.

[0194] As shown in FIGS. 11 and 12, for example, the first fixing frame 21 is further provided with a first avoiding space 214. The first avoiding space 214 is communicated with the third arc-shaped slot 213 of the first fixing frame 21.

[0195] As shown in FIGS. 11 and 12, for example, the second fixing frame 22 is provided with a first arc-shaped slot 221 and a second arc-shaped slot 222 arranged at intervals. For example, the first arc-shaped slot 221 and the second arc-shaped slot 222 of the second fixing frame 22 can be arranged at intervals along the Y-axis direction. The first arc-shaped slot 221 and the second arc-shaped slot 222 of the second fixing frame 22 can be communicated.

[0196] As shown in FIGS. 11 and 12, for example, the second fixing frame 22 is further provided with a third arc-shaped slot 223. The third arc-shaped slot 223 of the second fixing frame 22 can be located on a side of the second arc-shaped slot 222 of the second fixing frame 22 away from the first arc-shaped slot 221 of the second fixing frame 22.

[0197] As shown in FIGS. 11 and 12, the second fixing frame 22 is exemplarily provided with a second avoiding space 224. The second avoiding space 224 is communicated with the third arc-shaped slot 223 of the second fixing frame 22.

[0198] It can be understood that the second fixing frame 22 and the first fixing frame 21 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second fixing frame 22 and the first fixing frame 21 are symmetrical structure. The basic design of the component structure of the second fixing frame 22, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can refer to the related solutions of the first fixing frame 21, and meanwhile, the second fixing frame 22 and the first fixing frame 21 can be slightly different in the detailed structure or position arrangement of the components. Details are not described herein.

[0199] FIG. 13 is a structural schematic view of one embodiment of the first connecting piece 23 and the second connecting piece 24 shown in FIG. 10. FIG. 14 is a structural schematic view of the first connecting piece 23 and the second connecting piece 24 shown in FIG. 13 from another angle.

[0200] As shown in FIGS. 13 and 14, the first connecting piece 23 includes a first rotating end 231, a first connecting section 232, and a second rotating end 233. The first connecting section 232 of the first connecting piece 23 is connected between the first rotating end 231 and the second rotating end 233 of the first connecting piece 23. The first connecting piece 23 can be an integrally formed structural member to have higher structural strength. In other embodiments, the first connecting piece 23 can not include the first connecting section 232.

[0201] Exemplarily, the first rotating end 231 of the first connecting piece 23 includes a first end portion 2311, a middle portion 2312, and a second end portion 2313 connected in sequence. In other words, the middle portion 2312 of the first rotating end 231 of the first connecting piece 23 is connected between the first end portion 2311 of the first rotating end 231 of the first connecting piece 23 and the second end portion 2313 of the first rotating end 231 of the first connecting piece 23. The first end portion 2311 and the second end portion 2313 of the first rotating end 231 of the first connecting piece 23 are both in arc shape.

[0202] Exemplarily, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 can be provided with a first mounting space 2314. The first mounting space 2314 of the first connecting member 23 can be used to assemble other structural members to realize connection with other structural members. It can be understood that the shape, size and number of the first mounting space 2314 are not specifically limited. In other embodiments, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 can also not be provided with the first mounting space 2314. At this time, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 can also be provided in an arc shape. In this way, the first end portion 2311, the middle portion 2312 and the second end portion 2313 of the first rotating end 231 of the first connecting member 23 can form a complete arc-shaped block.

[0203] As shown in FIGS. 13 and 14, the second rotating end 233 of the first connecting member 23 can also include a first end portion 2331, a middle portion 2332 and a second end portion 2333 connected in sequence. It can be understood that the first end portion 2331, the middle portion 2332 and the second end portion 2333 of the second rotating end 233 of the first connecting member 23 can be provided in the same manner as the first end portion 2311, the middle portion 2312 and the second end portion 2313 of the first rotating end 231 of the first connecting member 23. For example, the first end portion 2331 and the second end portion 2333 of the second rotating end 233 of the first connecting member 23 are also provided in an arc shape. Details are not repeated here.

[0204] As shown in FIGS. 13 and 14, the second connecting member 24 can also include a first rotating end 241, a first connecting segment 242 and a second rotating end 243. It can be understood that the first rotating end 241, the first connecting segment 242 and the second rotating end 243 of the second connecting member 24 can be provided in the same manner as the first rotating end 231, the first connecting segment 232 and the second rotating end 233 of the first connecting member 23. For example, the first rotating end 241 of the second connecting member 24 includes a first end portion 2411, a middle portion 2412 and a second end portion 2413 connected in sequence. The first end portion 2411 and the second end portion 2413 of the first rotating end 241 of the second connecting member 24 are provided in an arc shape. The second rotating end 243 of the second connecting member 24 includes a first end portion 2431, a middle portion 2432 and a second end portion 2433 connected in sequence. The first end portion 2431 and the second end portion 2433 of the second rotating end 243 of the second connecting member 24 are also provided in an arc shape. Details are not repeated here. In addition, in other embodiments, the second connecting member 24 can also not include the first connecting segment 242.

[0205] FIG. 15 is a partial structural schematic diagram I of an embodiment of the folding mechanism 100 shown in FIG. 6.

[0206] Please refer to Fig. 15, and in combination with Figs. 11-14, the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through a virtual shaft. The second rotating end 233 of the first connecting member 23 is rotatably connected to the first fixed frame 21 through a virtual shaft. The first rotating end 241 of the second connecting member 24 is rotatably connected to the main shaft 1 through a virtual shaft. The second rotating end 243 of the second connecting member 24 is rotatably connected to the second fixed frame 22 through a virtual shaft.

[0207] Fig. 16 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 15 at the line D1-D1.

[0208] Please refer to Fig. 16, and in combination with Figs. 8, 9, 13 and 14, the first end 2311 of the first rotating end 231 of the first connecting member 23 is arranged in the first arc-shaped slot 11 of the main shaft 1. Through the relative movement of the two, the first end 2311 of the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through the arc-shaped block and the arc-shaped slot.

[0209] Fig. 17 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 15 at the line D2-D2.

[0210] Please refer to Fig. 17, and in combination with Figs. 8, 9, 13 and 14, the second end 2313 of the first rotating end 231 of the first connecting member 23 is arranged in the second arc-shaped slot 12 of the main shaft 1. Through the relative movement of the two, the second end 2313 of the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through the arc-shaped block and the arc-shaped slot.

[0211] As shown in Figs. 16 and 17, since the first end 2311 of the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through the arc-shaped block and the arc-shaped slot, and the second end 2313 of the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through the arc-shaped block and the arc-shaped slot, the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through the arc-shaped block and the arc-shaped slot.

[0212] It can be understood that the first rotating end 231 of the first connecting member 23 is connected to the main shaft 1 through the virtual shaft in the manner shown in Figs. 8, 9, 13, 14, 16 and 17. For example, in an embodiment, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 can be in an arc shape. The middle portion 2312 of the first rotating end 231 of the first connecting member 23 is arranged in the arc-shaped groove of the main shaft 1. Through the relative movement of the two, the first rotating end 231 of the first connecting member 23 is connected to the main shaft 1 through the virtual shaft. For another example, in an embodiment, the main shaft 1 is provided with an arc-shaped groove. The first rotating end 231 of the first connecting member 23 comprises an arc-shaped block. The arc-shaped block of the first rotating end 231 of the first connecting member 23 can be arranged in the arc-shaped groove of the main shaft 1. Through the relative movement of the two, the first rotating end 231 of the first connecting member 23 is connected to the main shaft 1 through the virtual shaft. The specific application is not limited. In addition, in other embodiments, the first rotating end 231 of the first connecting member 23 can also be connected to the main shaft 1 through the virtual shaft in other structural arrangements. The specific application is not limited.

[0213] Please refer to Fig. 16, and in combination with Figs. 11 to 14, the first end portion 2331 of the second rotating end 233 of the first connecting member 23 is arranged in the first arc-shaped groove 211 of the first fixed frame 21. Through the relative movement of the two, the first end portion 2331 of the second rotating end 233 of the first connecting member 23 is connected to the first fixed frame 21 through the arc-shaped block and the arc-shaped groove to form a rotating connection structure, that is, the first end portion 2331 of the second rotating end 233 of the first connecting member 23 is connected to the first fixed frame 21 through the virtual shaft.

[0214] Please refer to Fig. 17, and in combination with Figs. 11 to 14, the second end portion 2333 of the second rotating end 233 of the first connecting member 23 is arranged in the second arc-shaped groove 212 of the first fixed frame 21. Through the relative movement of the two, the second end portion 2333 of the second rotating end 233 of the first connecting member 23 is connected to the first fixed frame 21 through the arc-shaped block and the arc-shaped groove to form a rotating connection structure, that is, the second end portion 2333 of the second rotating end 233 of the first connecting member 23 is connected to the first fixed frame 21 through the virtual shaft.

[0215] As shown in FIGS. 16 and 17, the first end portion 2331 of the second rotating end 233 of the first connecting member 23 can be rotatably connected to the first fixed frame 21 by the arc-shaped block and the arc-shaped groove, and the second end portion 2333 of the second rotating end 233 of the first connecting member 23 can be rotatably connected to the first fixed frame 21 by the arc-shaped block and the arc-shaped groove, so that the second rotating end 233 of the first connecting member 23 can be rotatably connected to the first fixed frame 21 by the arc-shaped block and the arc-shaped groove, that is, the second rotating end 233 of the first connecting member 23 can be rotatably connected to the first fixed frame 21 by the virtual shaft.

[0216] It can be understood that the arrangement of the second rotating end 233 of the first connecting member 23 rotatably connected to the first fixed frame 21 by the virtual shaft is not limited to the structure described in FIGS. 11 to 17. For example, in an embodiment, the middle portion 2332 of the second rotating end 233 of the first connecting member 23 can be arc-shaped. The middle portion 2332 of the second rotating end 233 of the first connecting member 23 is arranged in the arc-shaped groove of the first fixed frame 21. Through the relative movement of the two, the second rotating end 233 of the first connecting member 23 is rotatably connected to the first fixed frame 21 by the virtual shaft. For another example, in an embodiment, the first fixed frame 21 is provided with an arc-shaped groove. The second rotating end 233 of the first connecting member 23 comprises an arc-shaped block. The arc-shaped block of the second rotating end 233 of the first connecting member 23 can be arranged in the arc-shaped groove of the first fixed frame 21. Through the relative movement of the two, the second rotating end 233 of the first connecting member 23 is rotatably connected to the first fixed frame 21 by the virtual shaft. The specific application is not limited. In addition, in other embodiments, the second rotating end 233 of the first connecting member 23 can be rotatably connected to the first fixed frame 21 by the virtual shaft through other structural arrangements. The specific application is not limited.

[0217] As shown in FIGS. 16 and 17, the first end portion 2411 of the first rotating end 241 of the second connecting member 24 is arranged in the third arc-shaped groove 13 of the main shaft 1, and the second end portion 2413 of the first rotating end 241 of the second connecting member 24 is arranged in the fourth arc-shaped groove 14 of the main shaft 1, so that the first rotating end 241 of the second connecting member 24 is rotatably connected to the main shaft 1 by the virtual shaft. It can be understood that the arrangement of the first rotating end 241 of the second connecting member 24 rotatably connected to the main shaft 1 by the virtual shaft can refer to the arrangement of the first rotating end 231 of the first connecting member 23 rotatably connected to the main shaft 1 by the virtual shaft. The specific application is not described here.

[0218] As shown in FIGS. 16 and 17, the first end portion 2431 of the second rotating end 243 of the second connecting member 24 is arranged in the first arc-shaped slot 221 of the second fixed frame 22, and the second end portion 2433 of the second rotating end 243 of the second connecting member 24 is arranged in the second arc-shaped slot 222 of the second fixed frame 22, so that the second rotating end 243 of the second connecting member 24 is rotatably connected to the second fixed frame 22 through a virtual shaft. It can be understood that the arrangement of the second rotating end 243 of the second connecting member 24 rotatably connected to the second fixed frame 22 through a virtual shaft can refer to the arrangement of the second rotating end 233 of the first connecting member 23 rotatably connected to the first fixed frame 21 through a virtual shaft. Details are not described here.

[0219] FIG. 18 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in FIG. 15 at D3-D3 line.

[0220] Referring to FIG. 18, in combination with FIGS. 16 and 17, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 is arranged between the first arc-shaped slot 11 and the second arc-shaped slot 12 of the main shaft 1, and the middle portion 2312 of the first rotating end 231 of the first connecting member 23 is arranged spaced apart from the main shaft 1.

[0221] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2312 of the first rotating end 231 of the first connecting member 23 can also be arranged in contact with the main shaft 1, and the surfaces in contact with each other can both be arc surfaces. It can be understood that the positional relationship between the middle portion 2312 of the first rotating end 231 of the first connecting member 23 and the main shaft 1 is not specifically limited in the present embodiment.

[0222] Referring to FIG. 18, in combination with FIGS. 16 and 17, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2332 of the second rotating end 233 of the first connecting member 23 is arranged between the first arc-shaped slot 211 and the second arc-shaped slot 212 of the first fixed frame 21, and the middle portion 2332 of the second rotating end 233 of the first connecting member 23 is arranged in contact with the first fixed frame 21, and the surfaces in contact with each other can both be arc surfaces.

[0223] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2332 of the second rotating end 233 of the first connecting member 23 can also be arranged spaced apart from the first fixed frame 21. It can be understood that the positional relationship between the middle portion 2332 of the second rotating end 233 of the first connecting member 23 and the first fixed frame 21 is not specifically limited in the present embodiment.

[0224] Please refer to FIG. 18, and in combination with FIG. 16 and FIG. 17, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2412 of the first rotating end 241 of the second connecting member 24 is located between the third arc-shaped slot 13 and the fourth arc-shaped slot 14 of the main shaft 1, and the middle portion 2412 of the first rotating end 241 of the second connecting member 24 is arranged in a spaced manner with the main shaft 1.

[0225] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2412 of the first rotating end 241 of the second connecting member 24 can also be arranged in contact with the main shaft 1, and the surfaces in contact with each other can both be arc surfaces. It can be understood that the positional relationship between the middle portion 2412 of the first rotating end 241 of the second connecting member 24 and the main shaft 1 is not specifically limited in the present embodiment.

[0226] As shown in FIG. 18, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2432 of the second rotating end 243 of the second connecting member 24 is located between the first arc-shaped slot 221 and the second arc-shaped slot 222 of the second fixed frame 22, and the middle portion 2432 of the second rotating end 243 of the second connecting member 24 is arranged in contact with the second fixed frame 22, and the surfaces in contact with each other can both be arc surfaces.

[0227] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2432 of the second rotating end 243 of the second connecting member 24 can also be arranged in a spaced manner with the second fixed frame 22. It can be understood that the positional relationship between the middle portion 2432 of the second rotating end 243 of the second connecting member 24 and the second fixed frame 22 is not specifically limited in the present embodiment.

[0228] FIG. 19 is a structural schematic diagram of one embodiment of the third connecting member 25 and the fourth connecting member 26 shown in FIG. 10. FIG. 20 is a structural schematic diagram of the third connecting member 25 and the fourth connecting member 26 shown in FIG. 19 from another angle.

[0229] As shown in FIG. 19 and FIG. 20, the third connecting member 25 comprises a third rotating end 251, a second connecting segment 252, and a fourth rotating end 253. The second connecting segment 252 of the third connecting member 25 is connected between the third rotating end 251 and the fourth rotating end 253 of the third connecting member 25. The third connecting member 25 can be a one-piece structure to have higher structural strength. Exemplarily, the second connecting segment 252 of the third connecting member 25 can be bent relative to the third rotating end 251 of the third connecting member 25, so that the shape of the third connecting member 25 is more diversified. In other embodiments, the third connecting member 25 can not comprise the second connecting segment 252.

[0230] Exemplarily, the third rotating end 251 of the third connecting member 25 comprises a first end portion 2511, a middle portion 2512 and a second end portion 2513 connected in sequence. In other words, the middle portion 2512 of the third rotating end 251 of the third connecting member 25 is connected between the first end portion 2511 and the second end portion 2513 of the third rotating end 251 of the third connecting member 25. The first end portion 2511 and the second end portion 2513 of the third rotating end 251 of the third connecting member 25 are both arc-shaped.

[0231] Exemplarily, the fourth rotating end 253 of the third connecting member 25 can be arc-shaped. In other embodiments, the fourth rotating end 253 of the third connecting member 25 can also be arranged in the same way as the third rotating end 251 of the third connecting member 25.

[0232] Exemplarily, the bending direction of the fourth rotating end 253 of the third connecting member 25 is opposite to the bending direction of the first end portion 2511 of the third rotating end 251 of the third connecting member 25 and the bending direction of the second end portion 2513 of the third rotating end 251 of the third connecting member 25. In this way, the shape of the third connecting member 25 is more diversified, and the accuracy of the movement trajectory of other components can be better controlled. In other embodiments, the bending direction of the fourth rotating end 253 of the third connecting member 25, the bending direction of the first end portion 2511 of the third rotating end 251 of the third connecting member 25 and the bending direction of the second end portion 2513 of the third rotating end 251 of the third connecting member 25 are not specifically limited.

[0233] As shown in FIGS. 19 and 20, the fourth connecting member 26 can also comprise a third rotating end 261, a second connecting segment 262 and a fourth rotating end 263. It can be understood that the arrangement of the third rotating end 261, the second connecting segment 262 and the fourth rotating end 263 of the fourth connecting member 26 can refer to the arrangement of the third rotating end 251, the second connecting segment 252 and the fourth rotating end 253 of the third connecting member 25. For example, the third rotating end 261 of the fourth connecting member 26 comprises a first end portion 2611, a middle portion 2612 and a second end portion 2613 connected in sequence. The first end portion 2611 and the second end portion 2613 of the third rotating end 261 of the fourth connecting member 26 are both arc-shaped. The fourth rotating end 263 of the fourth connecting member 26 can be arc-shaped, and the like. Details are not described here. In addition, in other embodiments, the fourth connecting member 26 can also not comprise the second connecting segment 262.

[0234] FIG. 21 is a partial structural schematic diagram II of an embodiment of the folding mechanism 100 shown in FIG. 6.

[0235] Please refer to Fig. 21, and in combination with Figs. 11, 12, 19-20, the third rotating end 251 of the third connecting piece 25 is rotatably connected to the main shaft 1 through a virtual shaft. The fourth rotating end 253 of the third connecting piece 25 is rotatably connected to the first fixed frame 21 through a virtual shaft. The third rotating end 261 of the fourth connecting piece 26 is rotatably connected to the main shaft 1 through a virtual shaft. The fourth rotating end 263 of the fourth connecting piece 26 is rotatably connected to the second fixed frame 22 through a virtual shaft.

[0236] Fig. 22 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 21 at the line E1-E1. Fig. 23 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 21 at the line E2-E2.

[0237] As shown in Figs. 22 and 23, the first end portion 2511 of the third rotating end 251 of the third connecting piece 25 is arranged in the fifth arc-shaped groove 15 of the main shaft 1. Through relative movement of the two, the first end portion 2511 of the third rotating end 251 of the third connecting piece 25 and the main shaft 1 can form a rotating connection structure through arc-shaped block and arc-shaped groove cooperation, that is, the first end portion 2511 of the third rotating end 251 of the third connecting piece 25 and the main shaft 1 can be rotatably connected through a virtual shaft.

[0238] In addition, the second end portion 2513 of the third rotating end 251 of the third connecting piece 25 is arranged in the sixth arc-shaped groove 16 of the main shaft 1. Through relative movement of the two, the second end portion 2513 of the third rotating end 251 of the third connecting piece 25 and the main shaft 1 can form a rotating connection structure through arc-shaped block and arc-shaped groove cooperation, that is, the second end portion 2513 of the third rotating end 251 of the third connecting piece 25 and the main shaft 1 can be rotatably connected through a virtual shaft. In this way, the third rotating end 251 of the third connecting piece 25 and the main shaft 1 can form a rotating connection structure through arc-shaped block and arc-shaped groove cooperation, that is, the third rotating end 251 of the third connecting piece 25 can be rotatably connected to the main shaft 1 through a virtual shaft.

[0239] In other embodiments, the third rotating end 251 of the third connecting piece 25 is rotatably connected to the main shaft 1 through a virtual shaft in other manners, which can be referred to the manner in which the first rotating end 231 of the first connecting piece 23 is rotatably connected to the main shaft 1. Details are not described here.

[0240] As shown in Figs. 22 and 23, the fourth rotating end 253 of the third connecting piece 25 is arranged in the third arc-shaped groove 213 of the first fixed frame 21. Through relative movement of the two, the fourth rotating end 253 of the third connecting piece 25 and the first fixed frame 21 can form a rotating connection structure through arc-shaped block and arc-shaped groove cooperation, that is, the fourth rotating end 253 of the third connecting piece 25 and the first fixed frame 21 can be rotatably connected through a virtual shaft.

[0241] In other embodiments, the fourth rotating end 253 of the third connecting member 25 is rotatably connected to the first fixed frame 21 through a virtual shaft in other manners, which can be referred to the manner that the second rotating end 233 of the first connecting member 23 is rotatably connected to the first fixed frame 21. Details are not repeated here.

[0242] As shown in FIGS. 22 and 23, the first end portion 2611 of the third rotating end 261 of the fourth connecting member 26 is arranged in the seventh arc-shaped slot 17 of the main shaft 1, and the second end portion 2613 of the third rotating end 261 of the fourth connecting member 26 is arranged in the eighth arc-shaped slot 18 of the main shaft 1, so that the third rotating end 261 of the fourth connecting member 26 is rotatably connected to the main shaft 1 through an arc-shaped block and an arc-shaped slot, i.e., the third rotating end 261 of the fourth connecting member 26 is rotatably connected to the main shaft 1 through a virtual shaft. It can be understood that the manner that the third rotating end 261 of the fourth connecting member 26 is rotatably connected to the main shaft 1 can be referred to the manner that the third rotating end 251 of the third connecting member 25 is rotatably connected to the main shaft 1. Details are not repeated here.

[0243] As shown in FIGS. 22 and 23, the fourth rotating end 263 of the fourth connecting member 26 is arranged in the third arc-shaped slot 223 of the second fixed frame 22. Through relative movement of the two, the fourth rotating end 263 of the fourth connecting member 26 is rotatably connected to the second fixed frame 22 through an arc-shaped block and an arc-shaped slot, i.e., the fourth rotating end 263 of the fourth connecting member 26 is rotatably connected to the second fixed frame 22 through a virtual shaft.

[0244] In other embodiments, the fourth rotating end 263 of the fourth connecting member 26 is rotatably connected to the second fixed frame 22 through a virtual shaft in other manners, which can be referred to the manner that the second rotating end 243 of the second connecting member 24 is rotatably connected to the second fixed frame 22. Details are not repeated here.

[0245] FIG. 24 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in FIG. 21 at E3-E3.

[0246] Please refer to FIG. 24, and in combination with FIGS. 21-23, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2512 of the third rotating end 251 of the third connecting member 25 is located between the fifth arc-shaped slot 15 and the sixth arc-shaped slot 16 of the main shaft 1, the middle portion 2512 of the third rotating end 251 of the third connecting member 25 is in contact with the main shaft 1, and the surfaces in contact with each other can be arc surfaces.

[0247] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2512 of the third rotating end 251 of the third connecting member 25 can also be spaced apart from the main shaft 1. It can be understood that the positional relationship between the middle portion 2512 of the third rotating end 251 of the third connecting member 25 and the main shaft 1 is not specifically limited in the present embodiment.

[0248] Referring to FIG. 24, and in combination with FIGS. 21 to 23, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26 is located between the seventh arc-shaped groove 17 and the eighth arc-shaped groove 18 of the main shaft 1, the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26 is in contact with the main shaft 1, and the surfaces in contact with each other can be arc surfaces.

[0249] In other embodiments, when the electronic device 1000 is in the unfolded state, the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26 can also be spaced apart from the main shaft 1. It can be understood that the positional relationship between the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26 and the main shaft 1 is not specifically limited in the present embodiment.

[0250] As shown in FIGS. 21 to 24, and in combination with FIGS. 11 to 12, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, a part of the second connecting segment 252 of the third connecting member 25 can be located in the first avoiding space 214 of the first fixed frame 21. In this way, the distance between the third rotating end 251 and the fourth rotating end 253 of the third connecting member 25 can be ensured to be relatively short, and the third connecting member 25 can also be prevented from interfering with the first fixed frame 21.

[0251] As shown in FIGS. 21 to 24, and in combination with FIGS. 11 to 12, it is exemplarily shown that when the electronic device 1000 is in the unfolded state, a part of the second connecting segment 262 of the fourth connecting member 26 can be located in the second avoiding space 224 of the second fixed frame 22. In this way, the distance between the third rotating end 261 and the fourth rotating end 263 of the fourth connecting member 26 can be ensured to be relatively short, and the fourth connecting member 26 can also be prevented from interfering with the second fixed frame 22.

[0252] Please refer to FIGS. 15-18 and 21-24, in the embodiment, the first connecting member 23 is connected with the main shaft 1 and the first fixed frame 21 through virtual shafts, the second connecting member 24 is connected with the main shaft 1 and the second fixed frame 22 through virtual shafts, the third connecting member 25 is connected with the main shaft 1 and the first fixed frame 21 through virtual shafts, and the fourth connecting member 26 is connected with the main shaft 1 and the second fixed frame 22 through virtual shafts. It can be understood that the rotating connection structure of the embodiment is simple, occupies small space, and is conducive to reducing the thickness of the folding mechanism 100, so that the folding mechanism 100 and the electronic device 1000 are more easily realized thin and light.

[0253] It can be understood that the first fixed frame 21 can be fixedly connected with the first shell 300 (see FIGS. 5 and 6). The second fixed frame 22 can be fixedly connected with the second shell 400 (see FIGS. 5 and 6). For example, the first fixed frame 21 can be connected with the first shell 300 through fasteners. The second fixed frame 22 can be connected with the second shell 400 through fasteners. The fasteners include but are not limited to screws, bolts, rivets, pins, etc. It can be understood that since the first fixed frame 21 can be fixedly connected with the first shell 300, the first shell 300 can move with the first fixed frame 21, and the folding mechanism 100 can control the movement trajectory of the first shell 300 by controlling the movement trajectory of the first fixed frame 21. In addition, since the second fixed frame 22 can be fixedly connected with the second shell 400, the second shell 400 can move with the second fixed frame 22, and the folding mechanism 100 can control the movement trajectory of the second shell 400 by controlling the movement trajectory of the second fixed frame 22.

[0254] In the embodiment, the first rotating end 231 of the first connecting member 23 is rotatably connected to the main shaft 1 through a virtual shaft, the second rotating end 233 of the first connecting member 23 is rotatably connected to the first fixed frame 21 through a virtual shaft, the first rotating end 241 of the second connecting member 24 is rotatably connected to the main shaft 1 through a virtual shaft, the second rotating end 243 of the second connecting member 24 is rotatably connected to the second fixed frame 22 through a virtual shaft, the third rotating end 251 of the third connecting member 25 is rotatably connected to the main shaft 1 through a virtual shaft, the fourth rotating end 253 of the third connecting member 25 is rotatably connected to the first fixed frame 21 through a virtual shaft, the third rotating end 261 of the fourth connecting member 26 is rotatably connected to the main shaft 1 through a virtual shaft, and the fourth rotating end 263 of the fourth connecting member 26 is rotatably connected to the second fixed frame 22 through a virtual shaft, so that the relative motion trajectory of the first fixed frame 21 and the main shaft 1 can be determined, and the relative motion trajectory of the second fixed frame 22 and the main shaft 1 can be determined during the switching of the folding mechanism 100 between the unfolded state and the folded state. In addition, when the first connecting member 23 and the third connecting member 25 rotate relative to the main shaft 1, the first fixed frame 21 can be pulled back to be close to the main shaft 1, and the first fixed frame 21 can also be pushed out to be away from the main shaft 1, so as to realize the inward pulling and outward pushing movements of the first housing 300 through the first fixed frame 21. In addition, when the second connecting member 24 and the fourth connecting member 26 rotate relative to the main shaft 1, the second fixed frame 22 can be pulled back to be close to the main shaft 1, and the second fixed frame 22 can also be pushed out to be away from the main shaft 1, so as to realize the inward pulling and outward pushing movements of the second housing 400 through the second fixed frame 22.

[0255] It can be understood that when the electronic device 1000 is switched from the unfolded state to the folded state, the first housing 300 and the second housing 400 move towards each other, the first housing 300 can drive the first fixed frame 21 to rotate relative to the main shaft 1 through the first connecting member 23 and the third connecting member 25, and the second housing 400 can drive the second fixed frame 22 to rotate relative to the main shaft 1 through the second connecting member 24 and the fourth connecting member 26. During the relative unfolding of the first housing 300 and the second housing 400, the first fixed frame 21 can drive the first housing 300 to move away from the main shaft 1, and the second fixed frame 22 can drive the second housing 400 to move away from the main shaft 1. That is, the folding mechanism 100 can realize the inward pulling movement of the housing during the change from the unfolded state to the folded state, and the outward pushing movement of the housing during the change from the folded state to the unfolded state. Therefore, during the unfolding or folding process, the folding mechanism 100 can reduce the risk of pulling or pressing the flexible screen 200, so as to protect the flexible screen 200, improve the reliability of the flexible screen 200, and prolong the service life of the flexible screen 200 and the electronic device 1000.

[0256] Fig. 25 is a partial structural schematic diagram III of an embodiment of the folding mechanism 100 shown in Fig. 6. Fig. 26 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 25 at the F1-F1 line. Fig. 27 is a structural schematic diagram of an embodiment of the partial folding mechanism 100 shown in Fig. 25 in a folded state. Fig. 28 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in Fig. 27 at the G1-G1 line.

[0257] As shown in Figs. 25-28, and in combination with Fig. 21, the first support plate 4 is fixedly connected to the first connecting member 23. The second support plate 5 is fixedly connected to the second connecting member 24.

[0258] It can be understood that the first support plate 4 and the first connecting member 23 can be assembled into one component, and the second support plate 5 and the second connecting member 24 can be assembled into one component, so that the first connecting member 23 can directly control the motion trajectory of the first support plate 4, and the second connecting member 24 can directly control the motion trajectory of the second support plate 5, so that the control accuracy of the motion process of the first support plate 4 and the second support plate 5 is high, the backlash is small, and the stretching and contraction in the rotation process of the folding device is accurately realized to meet the support requirements of the flexible screen 200.

[0259] In the present embodiment, the first support plate 4 can be fixedly connected to the first rotating end 231, the first connecting segment 232, and the second rotating end 233 of the first connecting member 23. In other embodiments, the first support plate 4 can be fixedly connected to at least one or at least two of the first rotating end 231, the first connecting segment 232, and the second rotating end 233 of the first connecting member 23. The present embodiment is not specifically limited.

[0260] It can be understood that when the first end 2311 (see Fig. 16) and the second end 2313 (see Fig. 17) of the first rotating end 231 of the first connecting member 23 need to be rotationally connected to the main shaft 1, the connection position of the first support plate 4 and the first rotating end 231 of the first connecting member 23 can be located at the middle portion 2312 (see Fig. 18) of the first rotating end 231 of the first connecting member 23. Similarly, the connection position of the second rotating end 233 of the first connecting member 23 and the first support plate 4, the connection position of the first rotating end 241 of the second connecting member 24 and the second support plate 5, and the connection position of the second rotating end 243 of the second connecting member 24 and the second support plate 5 can be similarly arranged.

[0261] As shown in FIGS. 25-28, a concave-convex matching structure can be further arranged between the first connecting member 23 and the first support plate 4 to improve assembly accuracy and reliability. For example, the fixing block 23a of the first connecting member 23 is located in the fixing hole 42 of the first support plate 4 and is fixed in the fixing hole 42 of the first support plate 4 to realize mutual positioning and limiting between the first support plate 4 and the first connecting member 23. For example, the fixing block 23a of the first connecting member 23 can be interference-fitted with the fixing hole 42 of the first support plate 4. The fixing block 23a of the first connecting member 23 can also be fixedly connected with the hole wall of the fixing hole 42 of the first support plate 4 through a glue layer. It can be understood that the connection mode of the fixing block 23a of the first connecting member 23 with the fixing hole 42 of the first support plate 4 is not specifically limited in the present application.

[0262] In other embodiments, the first connecting member 23 can also be fixedly locked with the first support plate 4 through fasteners. The fasteners include but are not limited to screws, bolts, rivets, pins, etc.

[0263] It can be understood that the connection mode of the second connecting member 24 with the second support plate 5 can refer to the connection mode of the first connecting member 23 with the first support plate 4. For example, the fixing block 24a of the second connecting member 24 is located in the fixing hole 52 of the second support plate 5 and is fixed in the fixing hole 52 of the second support plate 5. Details are not described here.

[0264] As shown in FIGS. 25 and 26, when the folding mechanism 100 is in the unfolded state, the first support plate 4 can be located on the same side of the first fixing frame 21 and the main shaft 1, the second support plate 5 can be located on the same side of the second fixing frame 22 and the main shaft 1, and the first support plate 4 and the second support plate 5 can form a support surface 100a to jointly support the second display area 202 (see FIG. 5) of the flexible screen 200 (see FIG. 5).

[0265] As shown in FIGS. 27 and 28, when the folding mechanism 100 is in the folded state, at least part of the first support plate 4 is located on the side of the first fixing frame 21 facing the second fixing frame 22, at least part of the second support plate 5 is located on the side of the second fixing frame 22 facing the first fixing frame 21, and the first support plate 4 and the second support plate 5 can be located on the top side of the main shaft 1. In addition, the ends of the first support plate 4 and the second support plate 5 away from the main shaft 1 can be folded towards each other, the first support plate 4 and the second support plate 5 can be oppositely arranged, the main shaft 1, the first support plate 4 and the second support plate 5 can enclose at least part of the accommodation space 100b, and the second display area 202 of the flexible screen 200 can be located in the accommodation space 100b.

[0266] It can be understood that the first support plate 4 and the second support plate 5 can be located on the top side of the main shaft 1, or the projections of the first support plate 4 and the second support plate 5 on the main shaft 1 are located on the main shaft 1. In other embodiments, the positional relationship between the first support plate 4, the second support plate 5 and the main shaft 1 is not specifically limited when the folding mechanism 100 is in the folded state.

[0267] As shown in FIGS. 25-28, since the first support plate 4 is fixed to the first connecting member 23, the first support plate 4 can move with the first connecting member 23. In addition, since the second support plate 5 is fixed to the second connecting member 24, the second support plate 5 moves with the second connecting member 24. In this way, during the process of converting the folding mechanism 100 from the folded state to the flat state, and during the process of converting the folding mechanism 100 from the flat state to the folded state, the first support plate 4 and the second support plate 5 gradually open or gradually close, so that the flexible screen 200 can be completely supported in various forms of the folding mechanism 100, and the reliability and service life of the flexible screen 200 and the electronic device 1000 are improved.

[0268] In addition, since the first support plate 4 is fixedly connected with the first connecting member 23, and the second support plate 5 is fixedly connected with the second connecting member 24, the first connecting member 23 and the second connecting member 24 not only control the movement of the first housing 300 and the second housing 400, but also control the movement of the first support plate 4 and the second support plate 5, so that the folding mechanism 100 has high integration, and the overall connection relationship is simple and the mechanism is highly reliable.

[0269] FIG. 29 is a partial cross-sectional view of an embodiment of the folding mechanism 100 shown in FIG. 25 at the line F2-F2.

[0270] Referring to FIG. 29, and in combination with FIG. 25, the first support plate 4 is provided with a first avoiding hole 41. When the folding mechanism 100 is in the flat state, the middle portion 2512, a part of the first end portion 2511 and a part of the second end portion 2513 of the third rotating end 251 of the third connecting member 25 are located in the first avoiding hole 41, and form a support surface 100a together with the first support plate 4 and the second support plate 5, for supporting the second display area 202 (see FIG. 5) of the flexible screen 200 (see FIG. 5) together.

[0271] It can be understood that in an embodiment, when the folding mechanism 100 is in the unfolded state, the first support plate 4 is stacked on the third rotating end 251 of the third connecting member 25. In this way, in the Z-axis direction, the third rotating end 251 of the third connecting member 25 easily lifts the first support plate 4, thereby causing the folding mechanism 100 to have a higher thickness in the Z-axis direction, which is not conducive to the thinness of the folding mechanism 100 and the electronic device 1000. In particular, when the third rotating end 251 of the third connecting member 25 needs to have a sufficient thickness to ensure the overall strength of the third connecting member 25, the third rotating end 251 of the third connecting member 25 lifts the first support plate 4 to a greater height. At this time, the folding mechanism 100 has a greater thickness in the Z-axis direction. In the present embodiment, by arranging the middle portion 2512, part of the first end portion 2511, and part of the second end portion 2513 of the third rotating end 251 of the third connecting member 25 in the first avoiding hole 41 when the folding mechanism 100 is in the unfolded state, the problem of the third rotating end 251 of the third connecting member 25 lifting the first support plate 4 to cause the folding mechanism 100 and the electronic device 1000 to have a greater thickness is solved. In addition, in the Z-axis direction, at least part of the third rotating end 251 of the third connecting member 25 overlaps with the first support plate 4, and the space utilization in the Z-axis direction is higher, which is conducive to the thinness of the folding mechanism 100 and the electronic device 1000.

[0272] In other embodiments, when the folding mechanism 100 is in the unfolded state, part of the first end portion 2511 and part of the second end portion 2513 of the third rotating end 251 of the third connecting member 25 can also not be located in the first avoiding hole 41, and do not form the support surface 100a together with the first support plate 4 and the second support plate 5.

[0273] Similarly, referring to FIG. 29, and in combination with FIG. 25, the second support plate 5 is provided with a second avoiding hole 51. When the folding mechanism 100 is in the unfolded state, the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26, a portion of the first end portion 2611 of the third rotating end 261 of the fourth connecting member 26, and a portion of the second end portion 2613 of the third rotating end 261 of the fourth connecting member 26 are located in the second avoiding hole 51, and together with the middle portion 2512 of the third rotating end 251 of the third connecting member 25, a portion of the first end portion 2511 of the third rotating end 251 of the third connecting member 25, a portion of the second end portion 2513 of the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5 form a support surface 100a to support the second display area 202 (see FIG. 5) of the flexible screen 200 (see FIG. 5). In this way, on the one hand, the problem that the third rotating end 261 of the fourth connecting member 26 is raised to cause the folding mechanism 100 and the electronic device 1000 to have a relatively large thickness can be solved, so that the folding mechanism 100 and the electronic device 1000 can be thinned.

[0274] In other embodiments, when the folding mechanism 100 is in the unfolded state, the first end portion 2611 of the third rotating end 261 of the fourth connecting member 26 and the second end portion 2613 of the third rotating end 261 of the fourth connecting member 26 can also not be located in the second avoiding hole 51, and can also not form the support surface 100a together with the middle portion 2512 of the third rotating end 251 of the third connecting member 25, a portion of the first end portion 2511 of the third rotating end 251 of the third connecting member 25, a portion of the second end portion 2513 of the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5.

[0275] For example, when the folding mechanism 100 is in the unfolded state, the edge of the third rotating end 251 of the third connecting member 25 close to the third rotating end 261 of the fourth connecting member 26 is a first edge 2514, the edge of the third rotating end 261 of the fourth connecting member 26 close to the third rotating end 251 of the third connecting member 25 is a second edge 2614, and the distance between the first edge 2514 and the second edge 2614 can be less than or equal to 1.5 mm. In this way, when the third rotating end 261 of the fourth connecting member 26 forms the support surface 100a together with the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5, the flatness of the support surface 100a can be improved, and the support surface 100a can be prevented from having a large concave area, so that when the second display area 202 is touched, the second display area 202 can be prevented from being damaged or having a concave problem due to external force, and the reliability of the flexible screen 200 can be significantly improved.

[0276] Figure 30 is a partial cross-sectional view of one embodiment of the folding mechanism 100 shown in Figure 27 at the G2-G2 line.

[0277] As shown in Figure 30, when the folding mechanism 100 is in the folded state, the middle portion 2512 of the third rotating end 251 of the third connecting member 25, a portion of the first end portion 2511 (see Figure 25), and a portion of the second end portion 2513 are located in the first avoiding hole 41 of the first support plate 4, and together with the first support plate 4 and the second support plate 5 form the accommodating space 100b.

[0278] In one embodiment, when the folding mechanism 100 is in the folded state, the first support plate 4 is stacked on the third rotating end 251 of the third connecting member 25. In this way, the third rotating end 251 of the third connecting member 25 easily presses the accommodating space 100b, thereby causing the size of the accommodating space 100b to become smaller, which in turn affects the reliability of the flexible screen 200. In the present embodiment, when the folding mechanism 100 is in the folded state, the middle portion 2512 of the third rotating end 251 of the third connecting member 25, a portion of the first end portion 2511, and a portion of the second end portion 2513 are located in the first avoiding hole 41 of the first support plate 4, and together with the first support plate 4 and the second support plate 5 form the accommodating space 100b. In this way, the third rotating end 251 of the third connecting member 25 no longer presses the accommodating space 100b, the size of the accommodating space 100b no longer becomes smaller, and the reliability of the flexible screen 200 is better.

[0279] In other embodiments, when the folding mechanism 100 is in the folded state, a portion of the first end portion 2511 of the third rotating end 251 of the third connecting member 25 and a portion of the second end portion 2513 of the third rotating end 251 of the third connecting member 25 can also not be located in the first avoiding hole 41 of the first support plate 4, and can also not form the accommodating space 100b together with the first support plate 4 and the second support plate 5.

[0280] For example, when the folding mechanism 100 is in the folded state, at least a portion of the second connecting segment 252 of the third connecting member 25 can also be located in the first avoiding hole 41 of the first support plate 4, and together with at least a portion of the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5 form the accommodating space 100b. In this way, the second connecting segment 252 of the third connecting member 25 no longer presses the accommodating space 100b, the size of the accommodating space 100b no longer becomes smaller, and the reliability of the flexible screen 200 is better.

[0281] Please refer to FIG. 30, and in combination with FIG. 28, when the folding mechanism 100 is in the folded state, the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26, a part of the first end portion 2611, and a part of the second end portion 2613 are located in the second avoiding hole 51 of the second support plate 5, and together with the middle portion 2512 of the third rotating end 251 of the third connecting member 25, a part of the first end portion 2511 of the third rotating end 251 of the third connecting member 25, a part of the second end portion 2513 of the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5 form the accommodating space 100b. In this way, the third rotating end 261 of the fourth connecting member 26 can no longer press the accommodating space 100b, the size of the accommodating space 100b is no longer reduced, and the reliability of the flexible screen 200 is better.

[0282] In other embodiments, when the folding mechanism 100 is in the folded state, a part of the first end portion 2611 and a part of the second end portion 2613 of the third rotating end 261 of the fourth connecting member 26 can also not be located in the second avoiding hole 51 of the second support plate 5, and can also not form the accommodating space 100b together with at least part of the third rotating end 251 of the third connecting member 25, the first support plate 4, and the second support plate 5.

[0283] Exemplarily, when the folding mechanism 100 is in the folded state, at least part of the second connecting segment 262 of the fourth connecting member 26 can also be located in the second avoiding hole 51 of the second support plate 5, and together with the middle portion 2612 of the third rotating end 261 of the fourth connecting member 26, a part of the first end portion 2611, a part of the second end portion 2613, the first support plate 4, and the second support plate 5 form the accommodating space 100b. In this way, the second connecting segment 262 of the fourth connecting member 26 can no longer press the accommodating space 100b, the size of the accommodating space 100b is no longer reduced, and the reliability of the flexible screen 200 is better.

[0284] FIG. 31 is an exploded schematic view of an embodiment of the synchronization member 27, the first connecting member 23, and the second connecting member 24 shown in FIG. 10. FIG. 32 is an exploded schematic view of the synchronization member 27, the first connecting member 23, and the second connecting member 24 shown in FIG. 31 from another angle.

[0285] As shown in FIG. 31 and FIG. 32, the synchronizer 27 includes a base 271, a first transmission block 272, a second transmission block 273, and a guide block 274. The first transmission block 272 and the second transmission block 273 can each be helical. It can be understood that although the present embodiment divides the synchronizer 27 into four parts, the synchronizer 27 can also be a one-piece structure to have higher structural strength. Exemplarily, the synchronizer 27 can be formed by a computer numerical control (CNC) milling process. In other embodiments, the synchronizer 27 can also be formed by a metal injection molding process, which is not strictly limited in the present embodiment.

[0286] Exemplarily, the base 271 of the synchronizer 27 includes a top surface 2711 and a bottom surface 2712 arranged oppositely, a first side surface 2713 and a second side surface 2714 arranged oppositely, and a third side surface 2715 and a fourth side surface 2716 arranged oppositely. The first side surface 2713 and the second side surface 2714 of the base 271 are connected between the top surface 2711 and the bottom surface 2712 of the base 271. The third side surface 2715 and the fourth side surface 2716 of the base 271 are connected between the top surface 2711 and the bottom surface 2712 of the base 271, and are also connected between the first side surface 2713 and the second side surface 2714 of the base 271. In other embodiments, the base 271 can also have other shapes. Specifically, the present embodiment is not limited.

[0287] Exemplarily, the first transmission block 272 is protruded from the top surface 2711 of the base 271. For example, the first transmission block 272 can extend helically from the middle of the first side surface 2713 to the third side surface 2715 of the base 271.

[0288] Exemplarily, the second transmission block 273 is protruded from the top surface 2711 of the base 271. For example, the second transmission block 273 can extend helically from the middle of the second side surface 2714 to the third side surface 2715 of the base 271. In an embodiment, the first transmission block 272 and the second transmission block 273 can be symmetrical structures.

[0289] Exemplarily, the guide block 274 is protruded from the bottom surface 2712 of the base 271. The guide block 274 is arranged oppositely to the first transmission block 272 and the second transmission block 273. The guide block 274 can be strip-shaped, and the guide block 274 can extend from the fourth side surface 2716 to the third side surface 2715 of the base 271. For example, the guide block 274 can extend along the Y-axis direction. In other embodiments, the guide block 274 can also have other shapes. For example, square or spherical. Specifically, the present embodiment is not limited.

[0290] It can be understood that the above embodiment is an example structure of the synchronizer 27, and the synchronizer 27 can also have other implementation structures, which are not strictly limited in the present application.

[0291] As shown in FIGS. 31 and 32, the first rotating end 231 of the first connecting member 23 is provided with a first helical groove 2315. Exemplarily, the first helical groove 2315 can helically extend from the connection between the first connecting segment 232 of the first connecting member 23 and the first rotating end 231 to the surface of the first rotating end 231 of the first connecting member 23 away from the first connecting segment 232. In other embodiments, the position of the first helical groove 2315 is not specifically limited.

[0292] As shown in FIGS. 31 and 32, the first rotating end 241 of the second connecting member 24 is provided with a second helical groove 2415. Exemplarily, the second helical groove 2415 can helically extend from the connection between the first connecting segment 242 of the second connecting member 24 and the first rotating end 241 to the surface of the first rotating end 241 of the second connecting member 24 away from the first connecting segment 242. In other embodiments, the position of the second helical groove 2415 is not specifically limited.

[0293] FIG. 33 is a partial structural schematic diagram I of one embodiment of the first connecting assembly 2 shown in FIG. 7, and FIG. 34 is a structural schematic diagram of the partial first connecting assembly 2 shown in FIG. 33 in a folded state.

[0294] Please refer to FIGS. 33 and 34, and combine FIGS. 31 and 32, a part of the synchronizer 27 is movably connected to the first connecting member 23, and a part of the synchronizer 27 is movably connected to the second connecting member 24. The synchronizer 27 can make the first connecting member 23 and the second connecting member 24 keep synchronous rotation in the movement process of the folding mechanism 100, that is, synchronous mutual approaching or mutual moving away. Since the first connecting member 23 is rotationally connected to the first fixed frame 21 fixedly connected to the first housing 300 (please refer to FIGS. 5 and 6), and the second connecting member 24 is rotationally connected to the second fixed frame 22 fixedly connected to the second housing 400 (please refer to FIGS. 5 and 6), the rotation action of the first housing 300 and the second housing 400 relative to the main shaft 1 has good synchronism, which improves the mechanism operation experience of the folding mechanism 100 and the electronic device 1000.

[0295] Referring to FIGS. 33 and 34, and in combination with FIGS. 31 and 32, the first transmission block 272 of the synchronizing member 27 is disposed in the first helical groove 2315 of the first connecting member 23. Through relative movement of the two, the first rotating end 231 of the first connecting member 23 and the first transmission block 272 of the synchronizing member 27 are movably connected. The second transmission block 273 of the synchronizing member 27 is disposed in the second helical groove 2415 of the second connecting member 24. Through relative movement of the two, the first rotating end 241 of the second connecting member 24 and the second transmission block 273 of the synchronizing member 27 are movably connected.

[0296] It can be understood that, through cooperation of the first transmission block 272 and the first helical groove 2315, and cooperation of the second transmission block 273 and the second helical groove 2415, relative rotation of the first connecting member 23, the second connecting member 24, and the main shaft 1 can be converted into relative sliding of the synchronizing member 27 and the main shaft 1. In this way, compared with relative rotation of the synchronizing member 27 and the main shaft 1, the synchronizing member 27 of the present embodiment can be made thinner, thereby facilitating thinness of the folding mechanism 100 and the electronic device 1000.

[0297] FIG. 35 is a partial cross-sectional view of an embodiment of the folding mechanism 100 shown in FIG. 6 at the H-H line. FIG. 36 is a partial cross-sectional view of an embodiment of the electronic device 1000 shown in FIG. 3 at the I-I line.

[0298] Referring to FIGS. 35 and 36, and in combination with FIGS. 31 and 32, the synchronizing member 27 is slidably connected to the main shaft 1. The synchronizing member 27 can slide relative to the main shaft 1 along the Y-axis direction, for example.

[0299] For example, in the Z-axis direction, a portion of the base 271 is located between the main shaft 1 and the first rotating end 231 of the first connecting member 23, and a portion of the base 271 is located between the main shaft 1 and the first rotating end 241 of the second connecting member 24. In this way, through limiting of the main shaft 1, the first rotating end 231 of the first connecting member 23, and the first rotating end 241 of the second connecting member 24 in the Z-axis direction, movement of the synchronizing member 27 in the Z-axis direction can be avoided.

[0300] Exemplarily, the main shaft 1 is provided with a first guide slot 19a (the first guide slot 19a is also schematically shown from different angles in FIG. 9). In an embodiment, the first guide slot 19a can be a strip-shaped slot. The extension direction of the first guide slot 19a can be the Y-axis direction. The guide block 274 of the synchronous member 27 can be located in the first guide slot 19a of the main shaft 1. Through the relative movement of the two, the base 271 is connected to the main shaft 1 in sliding connection through the guide block 274, that is, the synchronous member 27 and the main shaft 1 are connected in sliding connection along the Y-axis direction. Wherein, the two side walls of the first guide slot 19a in the X-axis direction can limit the guide block 274 of the synchronous member 27, so as to avoid the movement of the synchronous member 27 along the X-axis direction.

[0301] It can be understood that when the synchronous member 27 is limited in the Z-axis direction and the X-axis direction, and is not limited in the Y-axis direction, the synchronous member 27 can move relative to the main shaft 1 along the Y-axis direction. In this way, the movement direction of the synchronous member 27 relative to the main shaft 1 is single, which can reduce the movement space of the synchronous member 27 on the main shaft 1, and is beneficial to the miniaturization of the main shaft 1, thereby being beneficial to the miniaturization of the folding mechanism 100 and the electronic device 1000.

[0302] As shown in FIGS. 33 and 35, when the folding mechanism 100 is in the unfolded state, the distance between the base 271 and the first end 2311 of the first rotating end 231 of the first connecting member 23 is a first distance, and the distance between the base 271 and the first end 2411 of the first rotating end 241 of the second connecting member 24 is a second distance. In addition, most of the first transmission block 272 is located in the first spiral slot 2315, and most of the second transmission block 273 is located in the second spiral slot 2415.

[0303] Exemplarily, the first distance and the second distance can be equal. In this way, the relative positions of the base 271 and the first connecting member 23 and the second connecting member 24 are more symmetrical, which is beneficial to improving the synchronization of the movement of the first connecting member 23 and the second connecting member 24 relative to the main shaft 1.

[0304] As shown in FIGS. 34 and 36, when the folding mechanism 100 is in the folded state, the distance between the base 271 and the first end 2311 of the first rotating end 231 of the first connecting member 23 is a third distance, and the distance between the base 271 and the first end 2411 of the first rotating end 241 of the second connecting member 24 is a fourth distance. Wherein, the third distance is greater than the first distance. The fourth distance is greater than the second distance. In addition, part of the first transmission block 272 is located in the first spiral slot 2315, and part of the first transmission block 272 is located outside the first spiral slot 2315. Part of the second transmission block 273 is located in the second spiral slot 2415, and part of the second transmission block 273 is located outside the second spiral slot 2415.

[0305] Exemplarily, the third distance can be equal to the fourth distance. In this way, the relative positions of the base 271 and the first connecting member 23 and the second connecting member 24 are more symmetrical, which is beneficial to improve the synchronization of the movement of the first connecting member 23 and the second connecting member 24 relative to the main shaft 1.

[0306] As shown in FIGS. 33-36, during the switching process of the folding mechanism 100 from the unfolded state to the folded state, the synchronizing member 27 moves along the positive direction of the Y axis. At this time, the base 271 of the synchronizing member 27 is away from the first end portion 2311 of the first rotating end 231 of the first connecting member 23 and the first end portion 2411 of the first rotating end 241 of the second connecting member 24. In addition, a part of the first transmission block 272 slides out of the first spiral groove 2315, and a part of the second transmission block 273 slides out of the second spiral groove 2415. The guide block 274 of the synchronizing member 27 moves along the positive direction of the Y axis in the first guide groove 19a of the main shaft 1.

[0307] As shown in FIGS. 33-36, during the switching process of the folding mechanism 100 from the unfolded state to the folded state, the synchronizing member 27 moves along the positive direction of the Y axis. At this time, the base 271 of the synchronizing member 27 is away from the first end portion 2311 of the first rotating end 231 of the first connecting member 23 and the first end portion 2411 of the first rotating end 241 of the second connecting member 24. In addition, a part of the first transmission block 272 slides out of the first spiral groove 2315, and a part of the second transmission block 273 slides out of the second spiral groove 2415. The guide block 274 of the synchronizing member 27 moves along the positive direction of the Y axis in the first guide groove 19a of the main shaft 1.

[0308] It can be understood that, during the switching process of the folding mechanism 100 from the unfolded state to the folded state, or during the switching process of the folding mechanism 100 from the folded state to the unfolded state, the synchronizing member 27 can make the first connecting member 23 and the second connecting member 24 keep synchronous rotation during the movement of the folding mechanism 100.

[0309] FIG. 37 is a structural schematic diagram of the damping member 28 in an embodiment shown in FIG. 10. FIG. 38 is a partially exploded schematic diagram II of the first connecting assembly 2 in an embodiment shown in FIG. 7.

[0310] As shown in FIGS. 37 and 38, the damping member 28 includes a first support 281, a second support 282, and an elastic member 283. Exemplarily, the first support 281 and the second support 282 can be rigid structures and are not easy to deform under external force. The elastic member 283 can be an elastic structure and is easy to deform under external force. The elastic member 283 can be a spring, a spring piece, an elastic rubber block, or the like. The number of the elastic member 283 can be two. In other embodiments, the number, shape, and size of the elastic member 283 are not specifically limited.

[0311] As shown in FIGS. 37 and 38, the first support 281 includes a first base plate 2811, a first fixed column 2812, a first protrusion 2813, and a second protrusion 2814. The first protrusion 2813 and the second protrusion 2814 are both arc-shaped. It can be understood that although the first support 281 is divided into four parts in the embodiment, the first support 281 can be a one-piece structure to have higher structural strength. The first support 281 can be formed by a CNC milling process, for example. In other embodiments, the first support 281 can also be formed by a metal injection molding process, which is not strictly limited in the embodiments of the application.

[0312] The number of the first fixed column 2812 can be equal to the number of the elastic member 283, for example. The number of the first fixed column 2812 is two in the embodiment, which is described as an example. In other embodiments, the number of the first fixed column 2812 is not specifically limited.

[0313] The number of the first protrusion 2813 and the second protrusion 2814 is one, for example. In other embodiments, the number of the first protrusion 2813 and the second protrusion 2814 is not specifically limited.

[0314] As shown in FIGS. 37 and 38, the first base plate 2811 includes a first face 2815 and a second face 2816 arranged oppositely. The first fixed column 2812 is protruded from the first face 2815 of the first base plate 2811. The first protrusion 2813 and the second protrusion 2814 can be symmetrical, for example.

[0315] As shown in FIGS. 37 and 38, the second support 282 includes a second base plate 2821, a second fixed column 2822, a third protrusion 2823, and a fourth protrusion 2824. The second support 282 can be a one-piece structure to have higher structural strength.

[0316] The second base plate 2821 includes a first face 2825 and a second face 2826 arranged oppositely, for example. The second fixed column 2822 is protruded from the first face 2825 of the second base plate 2821. The third protrusion 2823 and the fourth protrusion 2824 are spaced apart and protruded from the second face 2826 of the second base plate 2821. The third protrusion 2823 and the fourth protrusion 2824 can be symmetrical, for example.

[0317] It can be understood that the second support 282 and the first support 281 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the embodiment, the second support 282 and the first support 281 are symmetrical structures, and the basic design of the component structure of the second support 282, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can be referred to the related solutions of the first support 281. At the same time, the second support 282 and the first support 281 are allowed to be slightly different in the detailed structure or position arrangement of the components. Specifically, it will not be described here.

[0318] As shown in FIGS. 37 and 38, the elastic member 283 is connected between the first support 281 and the second support 282. Exemplarily, the elastic member 283 can exert an elastic force on the first support 281 and the second support 282 along the Y-axis direction. For example, the elastic member 283 can exert an elastic force on the first support 281 along the positive direction of the Y-axis, and can exert an elastic force on the second support 282 along the negative direction of the Y-axis. It can be understood that when the elastic member 283 switches from the compressed state to the natural state, the first support 281 and the second support 282 are away from each other under the elastic force of the elastic member 283.

[0319] Exemplarily, one end of the elastic member 283 is sleeved on the first fixed column 2812 of the first support 281, and the other end is sleeved on the second fixed column 2822 of the second support 282. At this time, the first protrusion 2813 and the second protrusion 2814 of the first support 281 are located on the side of the first base plate 2811 away from the elastic member 283. The third protrusion 2823 and the fourth protrusion 2824 of the second support 282 are located on the side of the second base plate 2821 away from the elastic member 283.

[0320] It can be understood that when the first support 281 is subjected to a first acting force in the negative direction of the Y-axis, the first support 281 can move in the negative direction of the Y-axis and press the elastic member 283, so that the elastic member 283 is in a compressed state. When the first support 281 is no longer subjected to the first acting force in the negative direction of the Y-axis, the elastic member 283 can exert an elastic force on the first support 281 in the positive direction of the Y-axis, and the first support 281 can move in the positive direction of the Y-axis under the elastic force.

[0321] Similarly, when the second support 282 is subjected to a second acting force in the positive direction of the Y-axis, the second support 282 can move in the positive direction of the Y-axis and press the elastic member 283, so that the elastic member 283 is in a compressed state. When the second support 282 is no longer subjected to the second acting force in the positive direction of the Y-axis, the elastic member 283 can exert an elastic force on the second support 282 in the negative direction of the Y-axis, and the second support 282 can move in the negative direction of the Y-axis under the elastic force.

[0322] It can be understood that the damper 28 can have various implementation structures. For example, the first support 281 can not include the second protrusion 2814. For another example, the second support 282 can not include the third protrusion 2823 and / or the fourth protrusion 2824. The above embodiments are exemplary structures of the damper 28, and the damper 28 can also have other implementation structures, which are not strictly limited in the present application.

[0323] As shown in FIG. 38, exemplary, the first rotating end 231 of the first connecting piece 23 has a first protrusion 2316 and a third protrusion 2317. Wherein, the first protrusion 2316 and the third protrusion 2317 are both arc-shaped. In other embodiments, the first rotating end 231 of the first connecting piece 23 can only have the first protrusion 2316, that is, does not include the third protrusion 2317, or the first rotating end 231 of the first connecting piece 23 can only have the third protrusion 2317, that is, does not include the first protrusion 2316.

[0324] It can be understood that the first protrusion 2316 and the third protrusion 2317 can be part of the first rotating end 231 of the first connecting piece 23. Exemplary, the first protrusion 2316 and the third protrusion 2317 can be part of the middle portion 2312 of the first rotating end 231 of the first connecting piece 23, that is, the first protrusion 2316 and the third protrusion 2317 are located between the first end portion 2311 and the second end portion 2313 of the first rotating end 231 of the first connecting piece 23. Exemplary, the first protrusion 2316 is arranged close to the first end portion 2311 of the first rotating end 231 of the first connecting piece 23. The third protrusion 2317 is arranged close to the second end portion 2313 of the first rotating end 231 of the first connecting piece 23.

[0325] Exemplary, the number of the first protrusion 2316 and the third protrusion 2317 is one. In other embodiments, the number of the first protrusion 2316 and the third protrusion 2317 is not specifically limited.

[0326] As shown in FIG. 38, in one embodiment, the middle portion 2312 of the first rotating end 231 of the first connecting piece 23 is provided with a first mounting space 2314. The first mounting space 2314 is located on one side of the first spiral groove 2315. Wherein, the first mounting space 2314 includes oppositely arranged first and second side walls 2314a and 2314b. The first protrusion 2316 can be protruded from the first side wall 2314a of the first mounting space 2314. The third protrusion 2317 can be protruded from the second side wall 2314b of the first mounting space 2314.

[0327] Exemplary, the first protrusion 2316 and the third protrusion 2317 can be oppositely arranged. In other embodiments, the relative positions of the first protrusion 2316 and the third protrusion 2317 are not specifically limited.

[0328] As shown in FIG. 38, the first rotating end 231 of the first connecting member 23 is exemplarily provided with a first limiting block 2318 and a third limiting block 2319. The first limiting block 2318 can be protruded from a first side wall 2314a of the first mounting space 2314. The third limiting block 2319 can be protruded from a second side wall 2314b of the first mounting space 2314. In other embodiments, the first rotating end 231 of the first connecting member 23 can be provided with only the first limiting block 2318, i.e., without the third limiting block 2319.

[0329] As shown in FIG. 38, the first rotating end 231 of the first connecting member 23 is exemplarily provided with a first limiting block 2318 and a third limiting block 2319. The first limiting block 2318 can be protruded from a first side wall 2314a of the first mounting space 2314. The third limiting block 2319 can be protruded from a second side wall 2314b of the first mounting space 2314. In other embodiments, the first rotating end 231 of the first connecting member 23 can be provided with only the first limiting block 2318, i.e., without the third limiting block 2319.

[0330] As shown in FIG. 38, the first rotating end 231 of the first connecting member 23 is exemplarily provided with a first limiting block 2318 and a third limiting block 2319. The first limiting block 2318 can be protruded from a first side wall 2314a of the first mounting space 2314. The third limiting block 2319 can be protruded from a second side wall 2314b of the first mounting space 2314. In other embodiments, the first rotating end 231 of the first connecting member 23 can be provided with only the first limiting block 2318, i.e., without the third limiting block 2319.

[0331] As shown in FIG. 38, the first rotating end 231 of the first connecting member 23 is exemplarily provided with a first limiting block 2318 and a third limiting block 2319. The first limiting block 2318 can be protruded from a first side wall 2314a of the first mounting space 2314. The third limiting block 2319 can be protruded from a second side wall 2314b of the first mounting space 2314. In other embodiments, the first rotating end 231 of the first connecting member 23 can be provided with only the first limiting block 2318, i.e., without the third limiting block 2319.

[0332] FIG. 39 is a partial cross-sectional view of an embodiment of the folding mechanism 100 at line J-J shown in FIG. 6. FIG. 40 is a partial cross-sectional view of an embodiment of the electronic device 1000 at line K-K shown in FIG. 3.

[0333] Please refer to FIG. 39 and FIG. 40, and combine FIG. 37 and FIG. 38, the damping member 28 is arranged on the main shaft 1. The first bracket 281 and the second bracket 282 are slidably connected to the main shaft 1. The first bracket 281 and the second bracket 282 can slide along the Y-axis direction relative to the main shaft 1. The first bracket 281 and the second bracket 282 can be provided with a first limiting block 2818 and a second limiting block 2828, respectively.

[0334] In an embodiment, a portion of the first support 281 is located between the main shaft 1 and the first rotating end 231 of the first connecting member 23, and a portion of the first support 281 is located between the main shaft 1 and the first rotating end 241 of the second connecting member 24. In this way, the main shaft 1, the first rotating end 231 of the first connecting member 23, and the first rotating end 241 of the second connecting member 24 are cooperated to limit the movement of the first support 281 in the Z-axis direction.

[0335] Exemplarily, a portion of the first base plate 2811 of the first support 281 is located between the main shaft 1 and the first limiting block 2318 of the first rotating end 231 of the first connecting member 23, and a portion of the first base plate 2811 of the first support 281 is located between the main shaft 1 and the second limiting block 2418 of the first rotating end 241 of the second connecting member 24. In this way, the main shaft 1, the first limiting block 2318 of the first rotating end 231 of the first connecting member 23, and the second limiting block 2418 of the first rotating end 241 of the second connecting member 24 are cooperated to limit the movement of the first support 281 in the Z-axis direction.

[0336] In an embodiment, in the X-axis direction, the two sides of the first base plate 2811 of the first support 281 are respectively abutted against the main shaft 1. In this way, the main shaft 1 can limit the movement of the first support 281 in the X-axis direction.

[0337] Exemplarily, the recess 19b (the recess 19b is also shown in Fig. 9 from a different angle) is arranged on the main shaft 1, and the slot side wall of the recess 19b is used to limit the movement of the first support 281 in the X-axis direction.

[0338] Exemplarily, the second guide slot 19c (the second guide slot 19c is also shown in Fig. 9 from a different angle) is arranged on the main shaft 1, and the length extension direction of the second guide slot 19c can be the Y-axis direction. A portion of the first base plate 2811 of the first support 281 is arranged in the second guide slot 19c of the main shaft 1. It can be understood that the first base plate 2811 and the second guide slot 19c of the main shaft 1 are cooperated to enable the first support 281 to move in the Y-axis direction.

[0339] It can be understood that the connection relationship between the second support 282 and the main shaft 1 can refer to the connection relationship between the first support 281 and the main shaft 1. For example, the main shaft 1, the third limiting block 2319 of the first rotating end 231 of the first connecting member 23, and the fourth limiting block 2419 of the first rotating end 241 of the second connecting member 24 are cooperated to limit the movement of the second support 282 in the Z-axis direction, and the like. Details are not described here again.

[0340] Fig. 41 is a partial structure schematic view two of an embodiment of the first connecting assembly 2 shown in Fig. 7. Fig. 42 is a structure schematic view of a portion of the first connecting assembly 2 shown in Fig. 41 in a folded state.

[0341] Referring to FIGS. 41 and 42, and in combination with FIGS. 37 and 38, the damping member 28 can be disposed between the first connecting member 23 and the second connecting member 24. The damping member 28 can apply a damping force to the first connecting member 23 and the second connecting member 24.

[0342] Exemplarily, a portion of the damping member 28 can be located in the first mounting space 2314 of the first connecting member 23, and a portion can be located in the second mounting space 2414 of the second connecting member 24.

[0343] Exemplarily, the first protrusion 2316 of the first connecting member 23 and the first protrusion 2813 of the first bracket 281 are staggered to form a clamping structure. The third protrusion 2317 of the first connecting member 23 and the third protrusion 2823 of the second bracket 282 are staggered to form a clamping structure. In this way, the first connecting member 23 can be stopped when the folding mechanism 100 is in the unfolded state or the folded state. In addition, the clamping structure can provide a certain resistance during the unfolding of the folding mechanism 100 to enter the unfolded state, or during the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0344] Exemplarily, the second protrusion 2416 of the second connecting member 24 and the second protrusion 2814 of the first bracket 281 are staggered to form a clamping structure. The fourth protrusion 2417 of the second connecting member 24 and the fourth protrusion 2824 of the second bracket 282 are staggered to form a clamping structure. In this way, the second connecting member 24 can be stopped when the folding mechanism 100 is in the unfolded state or the folded state. In addition, the clamping structure can provide a certain resistance during the unfolding of the folding mechanism 100 to enter the unfolded state, or during the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0345] Exemplarily, the elastic member 283 is in a compressed state. The elastic member 283 extrudes the first support 281 towards the first side wall 2314a of the first mounting space 2314 and the first side wall 2414a of the second mounting space 2414. The first support 281 is located between the elastic member 283 and the first side wall 2314a of the first mounting space 2314 and the first side wall 2414a of the second mounting space 2414. At this time, the first support 281 cooperates to compress the first rotating end 231 of the first connecting member 23 and the first rotating end 241 of the second connecting member 24, so that the clamping structure between the first connecting member 23 and the first support 281 is more stable, and the clamping structure between the second connecting member 24 and the first support 281 is more stable. In addition, the elastic member 283 also extrudes the second support 282 towards the second side wall 2314b of the first mounting space 2314 and the second side wall 2414b of the second mounting space 2414. The second support 282 is located between the elastic member 283 and the second side wall 2314b of the first mounting space 2314 and the second side wall 2414b of the second mounting space 2414. At this time, the second support 282 cooperates to compress the first rotating end 231 of the first connecting member 23 and the first rotating end 241 of the second connecting member 24, so that the clamping structure between the first connecting member 23 and the second support 282 is more stable, and the clamping structure between the second connecting member 24 and the second support 282 is more stable.

[0346] As shown in FIGS. 39 and 41, when the folding mechanism 100 is in the unfolded state, the first rotating end 231 of the first connecting member 23 forms a first clamping structure with the first support 281 and the second support 282. As shown in FIGS. 40 and 42, when the folding mechanism 100 is in the folded state, the first rotating end 231 of the first connecting member 23 forms a second clamping structure with the first support 281 and the second support 282. It can be understood that the first clamping structure and the second clamping structure can keep a relative positional relationship of the first connecting member 23 relative to the main shaft 1, so that the first housing 300 (see FIGS. 5 and 6) and the second housing 400 (see FIGS. 5 and 6) can better keep the unfolded state or the closed state, improving the user experience. In addition, the first clamping structure and the second clamping structure can provide a certain resistance during the unfolding of the electronic device 1000 to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0347] As shown in FIGS. 39 and 41, when the first rotating end 231 of the first connecting piece 23 forms the first clamping structure with the first support 281 and the second support 282, the first protrusion 2316 of the first rotating end 231 of the first connecting piece 23 is located on the side away from the second connecting piece 24, and the third protrusion 2317 of the first rotating end 231 of the first connecting piece 23 is located on the side away from the second connecting piece 24. In other words, the first protrusion 2316 of the first connecting piece 23 is in a concave-convex clamping structure with the groove on the side away from the second connecting piece 24 of the first support 281, and the third protrusion 2317 of the first connecting piece 23 is in a concave-convex clamping structure with the groove on the side away from the second connecting piece 24 of the second support 282.

[0348] As shown in FIGS. 40 and 42, when the first rotating end 231 of the first connecting piece 23 forms the second clamping structure with the first support 281 and the second support 282, the first protrusion 2316 of the first rotating end 231 of the first connecting piece 23 is located on the side close to the second connecting piece 24, and the third protrusion 2317 of the first rotating end 231 of the first connecting piece 23 is located on the side close to the second connecting piece 24. In other words, the first protrusion 2316 of the first connecting piece 23 is in a concave-convex clamping structure with the groove on the side close to the second connecting piece 24 of the first support 281, and the third protrusion 2317 of the first connecting piece 23 is in a concave-convex clamping structure with the groove on the side close to the first rotating end 241 of the second connecting piece 24 of the second support 282.

[0349] As shown in FIGS. 39 and 41, when the folding mechanism 100 is in the unfolded state, the first rotating end 241 of the second connecting piece 24 forms the third clamping structure with the first support 281 and the second support 282. As shown in FIGS. 40 and 42, when the folding mechanism 100 is in the unfolded state, the first rotating end 241 of the second connecting piece 24 forms the fourth clamping structure with the first support 281 and the second support 282. It can be understood that the third clamping structure and the fourth clamping structure can keep the relative position relationship of the second connecting piece 24 relative to the main shaft 1, so that the first housing 300 and the second housing 400 can better keep the unfolded state or the closed state, and the user experience is improved. In addition, the third clamping structure and the fourth clamping structure can provide a certain resistance during the unfolding of the electronic device 1000 to enter the open state or the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0350] As shown in FIGS. 39 and 41, when the first rotating end 241 of the second connecting piece 24 forms the third clamping structure with the first support 281 and the second support 282, the second protrusion 2814 of the first support 281 is located on the side of the second protrusion 2416 of the first rotating end 241 of the second connecting piece 24 away from the first connecting piece 23, and the fourth protrusion 2824 of the second support 282 is located on the side of the fourth protrusion 2417 of the first rotating end 241 of the second connecting piece 24 away from the first connecting piece 23. In other words, the second protrusion 2814 of the first support 281 and the groove on the side of the second protrusion 2416 of the second connecting piece 24 away from the first connecting piece 23 present a concave-convex matched clamping structure. In addition, the fourth protrusion 2824 of the second support 282 and the groove on the side of the fourth protrusion 2417 of the second connecting piece 24 away from the first connecting piece 23 present a concave-convex matched clamping structure.

[0351] As shown in FIGS. 40 and 42, when the first rotating end 241 of the second connecting piece 24 forms the fourth clamping structure with the first support 281 and the second support 282, the second protrusion 2814 of the first support 281 is located on the side of the second protrusion 2416 of the first rotating end 241 of the second connecting piece 24 close to the first connecting piece 23, and the fourth protrusion 2824 of the second support 282 is located on the side of the fourth protrusion 2417 of the first rotating end 241 of the second connecting piece 24 close to the first connecting piece 23. In other words, the second protrusion 2814 of the first support 281 and the groove on the side of the second protrusion 2416 of the second connecting piece 24 close to the first connecting piece 23 present a concave-convex matched clamping structure. In addition, the fourth protrusion 2824 of the second support 282 and the groove on the side of the fourth protrusion 2417 of the second connecting piece 24 close to the first connecting piece 23 present a concave-convex matched clamping structure.

[0352] As shown in FIGS. 39-42, it can be understood that when the folding mechanism 100 is in the intermediate state, the first rotating end 231 of the first connecting piece 23 and the first rotating end 241 of the second connecting piece 24 rotate relative to the first support 281 and the second support 282, the first protrusion 2316 of the first connecting piece 23 and the second protrusion 2416 of the second connecting piece 24 can slide out of one of the grooves of the first support 281 and then slide into the other groove, that is, the cooperation structure of "protrusion-groove" is changed into the transition structure of "protrusion-bulge", and then into the cooperation structure of "protrusion-another groove", the first support 281 relative to the first rotating end 231 of the first connecting piece 23 and the first rotating end 241 of the second connecting piece 24 presents the position relationship of "close- away-close", in addition, the third protrusion 2317 of the first connecting piece 23 and the fourth protrusion 2417 of the second connecting piece 24 can slide out of one of the grooves of the second support 282 and then slide into the other groove, that is, the cooperation structure of "protrusion-groove" is changed into the transition structure of "protrusion-bulge", and then into the cooperation structure of "protrusion-another groove", the second support 282 relative to the first rotating end 231 of the first connecting piece 23 and the first rotating end 241 of the second connecting piece 24 presents the position relationship of "close-away-close".

[0353] It can be understood that in the present embodiment, by setting the shapes of the first protrusion 2316 of the first connecting piece 23, the first bulge 2813 of the first support 281, the third protrusion 2317 of the first connecting piece 23 and the third bulge 2823 of the second support 282 are all arc-shaped, so that the cooperation structure formed by the first protrusion 2316 of the first connecting piece 23 and the first bulge 2813 of the first support 281, and the cooperation structure formed by the third protrusion 2317 of the first connecting piece 23 and the third bulge 2823 of the second support 282 are relatively simple and occupy small space, so that the damping member 28 can be set to be thinner, thereby facilitating the thin type setting of the folding mechanism 100 and the electronic device 1000.

[0354] Similarly, in the present embodiment, by setting the shapes of the second protrusion 2416 of the second connecting piece 24, the second bulge 2814 of the first support 281, the fourth protrusion 2417 of the second connecting piece 24 and the fourth bulge 2824 of the second support 282 are all arc-shaped, so that the cooperation structure formed by the second protrusion 2416 of the second connecting piece 24 and the second bulge 2814 of the first support 281, and the cooperation structure formed by the fourth protrusion 2417 of the second connecting piece 24 and the fourth bulge 2824 of the second support 282 occupy small space, further making the damping member 28 set to be thinner, and more facilitating the thin type setting of the folding mechanism 100 and the electronic device 1000.

[0355] As shown in FIG. 41 and FIG. 42, the synchronizer 27 moves along the positive direction of the Y axis during the switching process of the folding mechanism 100 from the unfolded state to the folded state. At this time, the synchronizer 27 can be arranged close to the damper 28. The synchronizer 27 moves along the negative direction of the Y axis during the switching process of the folding mechanism 100 from the folded state to the unfolded state. At this time, the synchronizer 27 can be arranged away from the damper 28. In this way, the arrangement of the synchronizer 27 and the damper 28 is more compact, which is conducive to improving the space utilization of the folding mechanism 100. In other embodiments, the positional relationship between the synchronizer 27 and the damper 28, as well as the relative movement of the synchronizer 27 and the damper 28, is not specifically limited.

[0356] It can be understood that in FIG. 41 and FIG. 42, no matter the synchronizer 27 moves along the positive direction of the Y axis or the negative direction of the Y axis, the base 271 and the guide block 274 of the synchronizer 27 are located on the top side of the middle portion 2312 of the first rotating end 231 of the first connecting member 23 and the top side of the middle portion 2412 of the first rotating end 241 of the second connecting member 24. In this way, no matter the synchronizer 27 moves along the positive direction of the Y axis or the negative direction of the Y axis, the base 271 and the guide block 274 of the synchronizer 27 will not interfere with the middle portion 2312 of the first rotating end 231 of the first connecting member 23 and the middle portion 2412 of the first rotating end 241 of the second connecting member 24, and will not push the middle portion 2312 of the first rotating end 231 of the first connecting member 23 and the middle portion 2412 of the first rotating end 241 of the second connecting member 24 to move along the positive direction of the Y axis or the negative direction of the Y axis.

[0357] The structure of one embodiment of the synchronizer 27 and the damper 28 is specifically described above in combination with the related drawings. It can be understood that by arranging a structure of the synchronizer 27 and movably connecting the synchronizer 27 to the first connecting member 23 and the second connecting member 24, the first connecting member 23 and the second connecting member 24 are kept synchronous rotation during the movement of the folding mechanism 100, that is, synchronous approaching or moving away from each other, by the synchronizer 27. Since the first connecting member 23 is rotationally connected to the first fixed frame 21 fixedly connected to the first housing 300, and the second connecting member 24 is rotationally connected to the second fixed frame 22 fixedly connected to the second housing 400, the rotation of the first housing 300 and the second housing 400 relative to the main shaft 1 is good in synchronization, which improves the mechanism operation experience of the folding mechanism 100 and the electronic device 1000. Secondly, by arranging a structure of the damper 28 and arranging the damper 28 between the first connecting member 23 and the second connecting member 24, the damper 28 is used to apply a damping force to the first connecting member 23 and the second connecting member 24, so as to provide a certain resistance during the unfolding of the folding mechanism 100 to enter the open state and the folding to release the unfolded state, so that the user can experience a better mechanism operation feeling.

[0358] It can be understood that, compared with the folding mechanism 100 in which the synchronizer 27 and the damper 28 are separately arranged, the synchronizer 27 and the damper 28 in the embodiment can form a synchronous damping folding module integrated with the first connecting member 23 and the second connecting member 24. The synchronous damping folding module has a smaller volume, which is conducive to the miniaturization of the folding mechanism 100, thereby being conducive to saving the internal space of the electronic device 1000. In addition, the synchronous damping folding module integrated can reduce the manufacturing cost of the folding mechanism 100.

[0359] The foregoing introduces several schemes. For example, scheme one: the main shaft 1 is connected to the first fixed frame 21 through the first connecting member 23 and the third connecting member 25, and is connected to the second fixed frame 22 through the second connecting member 24 and the fourth connecting member 26. Scheme two: the structure of the synchronizer 27. Scheme three: the structure of the damper 28. It can be understood that, the scheme one, the scheme two and the scheme three can be decoupled from each other, that is, the scheme one, the scheme two and the scheme three can be used as independent schemes, or can be combined with each other in pairs or all together to form a new scheme. When combined in pairs to form a new scheme, the remaining scheme can be used as a dependent scheme of the new scheme. For example, when the scheme two and the scheme three are combined, the folding mechanism 100 can not include the first fixed frame 21 and / or the second fixed frame 22 and / or the third connecting member 25 and / or the fourth connecting member 26. When the folding mechanism 100 does not include the first fixed frame 21 and the second fixed frame 22, the second rotating end 233 of the first connecting member 23 can be movably connected to the first housing 300, and the second rotating end 243 of the second connecting member 24 can be movably connected to the second housing 400. Of course, the folding mechanism 100 can also include the first fixed frame 21 and / or the second fixed frame 22 and / or the third connecting member 25 and / or the fourth connecting member 26. In addition, the movable connection manner of the first connecting member 23 and the main shaft 1 is not specifically limited. For example, it is mentioned in the foregoing that the first connecting member 23 and the main shaft 1 are rotationally connected through a virtual shaft. In other embodiments, the first connecting member 23 and the main shaft 1 can also be rotationally connected through a solid shaft. Similarly, the connection manner of the first connecting member 23 and the first fixed frame 21, the connection manner of the second connecting member 24 and the main shaft 1, the connection manner of the second fixed frame 22, the connection manner of the third connecting member 25 and the main shaft 1, the connection manner of the first fixed frame 21, the connection manner of the fourth connecting member 26 and the main shaft 1, and the connection manner of the second fixed frame 22 can refer to the movable connection manner of the first connecting member 23 and the main shaft 1. Details are not described here.

[0360] FIG. 43 is an exploded schematic view of an embodiment of the first connecting member 23 shown in FIG. 10. FIG. 44 is an assembly schematic view of an embodiment of the first main part and the first disassembled part shown in FIG. 43.

[0361] As shown in FIGS. 43 and 44, the first connecting piece 23 comprises a first main piece 234 and a first detached piece 235. The first detached piece 235 is detachably connected to the first main piece 234. At least a part of the first detached piece 235 and a part of the first main piece 234 form the first rotating end 231 of the first connecting piece 23.

[0362] In an embodiment, a part of the first detached piece 235 and a part of the first main piece 234 form the first rotating end 231 of the first connecting piece 23. A part of the first detached piece 235 and a part of the first main piece 234 form the first connecting section 232 of the first connecting piece 23. In other embodiments, the whole of the first detached piece 235 and a part of the first main piece 234 form the first rotating end 231 of the first connecting piece 23. In other embodiments, a part of the first detached piece 235 and a part of the first main piece 234 form the first rotating end 231 of the first connecting piece 23. A part of the first detached piece 235 and a part of the first main piece 234 form the first connecting section 232 of the first connecting piece 23. A part of the first detached piece 235 and a part of the first main piece 234 form the second rotating end 233 of the first connecting piece 23. The application is not limited in particular.

[0363] Exemplarily, the first main piece 234 and the first detached piece 235 can be fixedly connected by a fastener. The fastener can be a screw, a bolt, a rivet, a pin, etc. In other embodiments, the first main piece 234 and the first detached piece 235 can be fixedly connected by adhesion, buckle fastening, etc. The application is not limited in particular. It can be understood that the connection position of the first main piece 234 and the first detached piece 235 is not limited in particular. For example, a fastening hole can be provided on the two structural pieces forming the first connecting section 232 of the first connecting piece 23.

[0364] Exemplarily, the first main piece 234 comprises a first protrusion 2316 and a first limiting block 2318. The first detached piece 235 is provided with a first helical groove 2315, a third protrusion 2317 and a third limiting block 2319.

[0365] It can be understood that the first connecting piece 23 can be formed by detachably connecting the first main piece 234 and the first detached piece 235. Therefore, when the first connecting piece 23 is assembled with other structural pieces, the first main piece 234 and the first detached piece 235 can be assembled with other structural pieces respectively, and then the first detached piece 235 is fixed to the first main piece 234. This assembly mode can reduce the assembly of other structural pieces and the first connecting piece 23.

[0366] In addition, since the first connecting member 23 is formed by detachable connection of the first main part 234 and the first detachable part 235, there is a gap between the first main part 234 and the first detachable part 235 due to manufacturing tolerance and other factors. Thus, when the first rotating end 231 of the first connecting member 23 is connected with other structures (for example, the synchronizing member 27 and / or the damping member 28), the gap can provide a reserved space for the first rotating end 231 of the first connecting member 23 and the other structures, thereby avoiding damage of the first rotating end 231 of the first connecting member 23 and the other structures due to interference, and improving the reliability of the folding mechanism 100.

[0367] It can be understood that the second connecting member 24 can be arranged in the same way as the first connecting member 23. For example, the second connecting member 24 can include a second main part 244 and a second detachable part 245. The second detachable part 245 is detachably connected to the second main part 244. Details are not described herein.

[0368] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and any combination of the features in different embodiments is also within the protection scope of the present application, that is, the above-described multiple embodiments can be combined as needed.

[0369] It should be noted that all the above-mentioned drawings are exemplary drawings of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not a limitation on the actual product of the present application. The above is only part of the embodiments and implementation manners of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A folding mechanism (100) characterized in that, The utility model relates to a folding mechanism (100) and a folding device (200) comprising a main shaft (1), a first fixed frame (21), a second fixed frame (22), a first connecting piece (23), a second connecting piece (24), a third connecting piece (25), a fourth connecting piece (26), a first support plate (4) and a second support plate (5), the main shaft (1) is located between the first fixed frame (21) and the second fixed frame (22); The first connecting piece (23) and the main shaft (1), the first fixed frame (21) are all formed into rotary connection structure through the cooperation of arc block and arc slot, the second connecting piece (24) and the main shaft (1), the second fixed frame (22) are all formed into rotary connection structure through the cooperation of arc block and arc slot; The third connecting piece (25) and the main shaft (1), the first fixed frame (21) are all formed into rotary connection structure through the cooperation of arc block and arc slot, the fourth connecting piece (26) and the main shaft (1), the second fixed frame (22) are all formed into rotary connection structure through the cooperation of arc block and arc slot; The first support plate (4) is fixedly connected to the first connecting piece (23), the second support plate (5) is fixedly connected to the second connecting piece (24), when the folding mechanism (100) is in the unfolded state, the first support plate (4) and the second support plate (5) jointly form a support surface (100b), when the folding mechanism (100) is in the folded state, the first support plate (4) and the second support plate (5) are oppositely arranged and enclose a containing space (100a) with the main shaft (1).

2. The folding mechanism (100) according to claim 1, characterized in that The main shaft (1) is provided with an arc slot, a first rotary end (231) of the first connecting piece (23) comprises an arc block, and the arc block of the first rotary end (231) of the first connecting piece (23) is arranged in the arc slot of the main shaft (1); And / or, the first fixed frame (21) is provided with an arc slot, a second rotary end (233) of the first connecting piece (23) comprises an arc block, and the arc block of the second rotary end (233) of the first connecting piece (23) is arranged in the arc slot of the first fixed frame (21); And / or, the main shaft (1) is provided with an arc slot, a third rotary end (251) of the third connecting piece (25) comprises an arc block, and the arc block of the third rotary end (251) of the third connecting piece (25) is arranged in the arc slot of the main shaft (1); And / or, the first fixed frame (21) is provided with an arc slot, a fourth rotary end (253) of the third connecting piece (25) comprises an arc block, and the arc block of the fourth rotary end (253) of the third connecting piece (25) is arranged in the arc slot of the first fixed frame (21).

3. The folding mechanism (100) according to claim 2, characterized in that The main shaft (1) is provided with a first arc-shaped groove (11) and a second arc-shaped groove (12) arranged at intervals, the first rotating end (231) of the first connecting piece (23) comprises a first end portion (2311), a middle portion (2312) and a second end portion (2313) connected in sequence, the first end portion (2311) and the second end portion (2313) of the first rotating end (231) of the first connecting piece (23) are both arc-shaped, the first end portion (2311) of the first rotating end (231) of the first connecting piece (23) is arranged in the first arc-shaped groove (11) of the main shaft (1), and the second end portion (2313) of the first rotating end (231) of the first connecting piece (23) is arranged in the second arc-shaped groove (12) of the main shaft (1). And / or, the first fixed frame (21) is provided with a first arc-shaped groove (211) and a second arc-shaped groove (212) arranged at intervals, the second rotating end (233) of the first connecting piece (23) comprises a first end portion (2331), a middle portion (2332) and a second end portion (2333) connected in sequence, the first end portion (2331) and the second end portion (2333) of the second rotating end (233) of the first connecting piece (23) are both arc-shaped, the first end portion (2331) of the second rotating end (233) of the first connecting piece (23) is arranged in the first arc-shaped groove (211) of the first fixed frame (21), and the second end portion (2333) of the second rotating end (233) of the first connecting piece (23) is arranged in the second arc-shaped groove (212) of the first fixed frame (21).

4. The folding mechanism (100) according to claim 2 or 3, characterized in that The main shaft (1) is provided with a fifth arc-shaped groove (15) and a sixth arc-shaped groove (16) arranged at intervals, the third rotating end (251) of the third connecting piece (25) comprises a first end portion (2511), a middle portion (2512) and a second end portion (2513) connected in sequence, the first end portion (2511) and the second end portion (2513) of the third rotating end (251) of the third connecting piece (25) are both arc-shaped, the first end portion (2511) of the third rotating end (251) of the third connecting piece (25) is arranged in the fifth arc-shaped groove (15) of the main shaft (1), and the second end portion (2513) of the third rotating end (251) of the third connecting piece (25) is arranged in the sixth arc-shaped groove (16) of the main shaft (1). And / or, the first fixed frame (21) is further provided with a third arc-shaped groove (213), the fourth rotating end (253) of the third connecting piece (25) is arc-shaped, and the fourth rotating end (253) of the third connecting piece (25) is arranged in the third arc-shaped groove (213) of the first fixed frame (21).

5. The folding mechanism (100) according to claim 4, characterized in that The bending direction of the fourth rotating end (253) of the third connecting piece (25) is opposite to the bending direction of the first end portion (2511) of the third rotating end (251) of the third connecting piece (25) and the bending direction of the second end portion (2513) of the third rotating end (251) of the third connecting piece (25).

6. The folding mechanism (100) according to any one of claims 1 to 5, characterized in that The first support plate (4) is provided with a first avoiding hole (41), and when the folding mechanism (100) is in the unfolded state, the middle part (2512) of the third rotating end (251) of the third connecting piece (25) is located in the first avoiding hole (41) and forms the support surface (100a) together with the first support plate (4) and the second support plate (5); And / or, the first support plate (4) is provided with a first avoiding hole (41), and when the folding mechanism (100) is in the folded state, the middle part (2512) of the third rotating end (251) of the third connecting piece (25) is located in the first avoiding hole (41) and forms the containing space (100b) together with the first support plate (4) and the second support plate (5).

7. The folding mechanism (100) according to claim 6, characterized in that When the folding mechanism (100) is in the unfolded state, part of the first end part (2511) of the third rotating end (251) of the third connecting piece (25) and part of the second end part (2513) of the third rotating end (251) of the third connecting piece (25) are located in the first avoiding hole (41) and form the support surface (100a) together with the middle part (2512) of the third rotating end (251) of the third connecting piece (25), the first support plate (4) and the second support plate (5); And / or, when the folding mechanism (100) is in the folded state, part of the first end part (2511) of the third rotating end (251) of the third connecting piece (25) and part of the second end part (2513) of the third rotating end (251) of the third connecting piece (25) are located in the first avoiding hole (41) and form the containing space (100b) together with the middle part (2512) of the third rotating end (251) of the third connecting piece (25), the first support plate (4) and the second support plate (5).

8. The folding mechanism (100) according to claim 6 or 7, characterized in that The second support plate (5) is provided with a second avoiding hole (51), and when the folding mechanism (100) is in the unfolded state, the middle part (2612) of the third rotating end (261) of the fourth connecting piece (26) is located in the second avoiding hole (51) and forms the support surface (100a) together with the middle part (2512) of the third rotating end (251) of the third connecting piece (25), the first support plate (4) and the second support plate (5); And / or, the second support plate (5) is provided with a second avoiding hole (51), and when the folding mechanism (100) is in the folded state, the middle part (2612) of the third rotating end (261) of the fourth connecting piece (26) is located in the second avoiding hole (51) and forms the containing space (100b) together with the middle part (2512) of the third rotating end (251) of the third connecting piece (25), the first support plate (4) and the second support plate (5).

9. The folding mechanism (100) according to any one of claims 6 to 8, characterized in that The third rotating end (251) of the third connecting piece (25) is provided with a first edge (2514) close to the third rotating end (261) of the fourth connecting piece (26), the third rotating end (261) of the fourth connecting piece (26) is provided with a second edge (2614) close to the third rotating end (251) of the third connecting piece (25), and the distance between the first edge (2514) and the second edge (2614) is less than or equal to 1.5 mm.

10. The folding mechanism (100) according to any one of claims 1 to 9, characterized in that The folding mechanism (100) comprises a synchronizer (27), and the synchronizer (27) comprises a base (271), a first transmission block (272) and a second transmission block (273). The base (271) is slidably connected to the main shaft (1), and a part of the base (271) is located between the main shaft (1) and the first rotating end (231) of the first connecting piece (23), and another part of the base (271) is located between the main shaft (1) and the first rotating end (241) of the second connecting piece (24). The first transmission block (272) is movably connected to the first rotating end (231) of the first connecting piece (23), and the second transmission block (273) is movably connected to the first rotating end (241) of the second connecting piece (24).

11. The folding mechanism (100) according to claim 10, characterized in that The first rotating end (231) of the first connecting piece (23) is provided with a first spiral groove (2315), and the first rotating end (241) of the second connecting piece (24) is provided with a second spiral groove (2415). The first transmission block (272) and the second transmission block (273) are both in a spiral shape, the first transmission block (272) is arranged in the first spiral groove (2315), and the second transmission block (273) is arranged in the second spiral groove (2415).

12. The folding mechanism (100) according to claim 10 or 11, characterized in that The synchronizer (27) comprises a guide block (274), the guide block (274) is protruded from the base (271), and the guide block (274) is arranged away from the first transmission block (272) and the second transmission block (273). The main shaft (1) is provided with a first guide groove (19a), the guide block (274) is arranged in the first guide groove (19a), and the base (271) is slidably connected to the main shaft (1) through the guide block (274).

13. The folding mechanism (100) according to any one of claims 1 to 12, characterized in that The folding mechanism (100) comprises a damping member (28), the damping member (28) is arranged on the main shaft (1), and the damping member (28) is used for applying a damping force to the first connecting piece (23) and / or the second connecting piece (24).

14. The folding mechanism (100) according to claim 13, characterized in that The first rotating end (231) of the first connecting piece (23) is provided with a first mounting space (2314), and the first mounting space (2314) comprises a first side wall (2314a) and a second side wall (2314b) arranged opposite to each other. The first rotating end (241) of the second connecting piece (24) is provided with a second mounting space (2414), and the second mounting space (2414) comprises oppositely arranged first and second side walls (2414a and 2414b); The damping piece (28) comprises a first support (281), a second support (282) and an elastic piece (283), the elastic piece (283) is connected between the first support (281) and the second support (282), the first support (281) and the second support (282) are in sliding connection with the main shaft (1) and are located in the first mounting space (2314) and the second mounting space (2414); The elastic piece (283) is in a compressed state, the first support (281) is located between the elastic piece (283) and the first side wall (2314a) of the first mounting space (2314) and the first side wall (2414a) of the second mounting space (2414), and the second support (282) is located between the elastic piece (283) and the second side wall (2314b) of the first mounting space (2314) and the second side wall (2414b) of the second mounting space (2414).

15. The folding mechanism (100) according to claim 14, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a first protrusion (2316), the first protrusion (2316) is protruded from the first side wall (2314a) of the first mounting space (2314), the first rotating end (241) of the second connecting piece (24) comprises a second protrusion (2416), and the second protrusion (2416) is protruded from the first side wall (2414a) of the second mounting space (2414); The first support (281) comprises a first base plate (2811), a first protruding block (2813) and a second protruding block (2814), and the first protruding block (2813) and the second protruding block (2814) are protruded from a second surface (2816) of the first base plate (2811) in a spaced manner; The first protrusion (2316) of the first connecting piece (23) and the first protruding block (2813) of the first support (281) are staggered to form a clamping structure, and the second protrusion (2416) of the second connecting piece (24) and the second protruding block (2814) of the first support (281) are staggered to form a clamping structure.

16. The folding mechanism (100) according to claim 14 or 15, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a third protrusion (2317), the third protrusion (2317) is protruded from the second side wall (2314b) of the first mounting space (2314), the first rotating end (241) of the second connecting piece (24) comprises a fourth protrusion (2417), and the fourth protrusion (2417) is protruded from the second side wall (2414b) of the second mounting space (2414); The second support (282) comprises a second base plate (2821), a third protrusion (2823) and a fourth protrusion (2824), the third protrusion (2823) and the fourth protrusion (2824) are spaced and protrude on the second surface (2826) of the second base plate (2821); The third protrusion (2317) of the first connecting piece (23) and the third protrusion (2823) of the second support (282) are staggered to form a clamping structure, and the fourth protrusion (2417) of the second connecting piece (24) and the fourth protrusion (2824) of the second support (282) are staggered to form a clamping structure.

17. The folding mechanism (100) according to claim 15 or 16, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a first limiting block (2318), the first limiting block (2318) protrudes on the first side wall (2314a) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a second limiting block (2418), the second limiting block (2418) protrudes on the first side wall (2414a) of the second mounting space (2414); Part of the first base plate (2811) is located between the main shaft (1) and the first limiting block (2318) of the first rotating end (231) of the first connecting piece (23), and part of the first base plate (2811) is located between the main shaft (1) and the second limiting block (2418) of the first rotating end (241) of the second connecting piece (24).

18. The folding mechanism (100) according to claim 16, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a third limiting block (2319), the third limiting block (2319) protrudes on the second side wall (2314b) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a fourth limiting block (2419), the fourth limiting block (2419) protrudes on the second side wall (2414b) of the second mounting space (2414); Part of the second base plate (2821) is located between the main shaft (1) and the third limiting block (2319) of the first rotating end (231) of the first connecting piece (23), and part of the second base plate (2821) is located between the main shaft (1) and the fourth limiting block (2419) of the first rotating end (241) of the second connecting piece (24).

19. The folding mechanism (100) according to any one of claims 16 to 18, characterized in that The first support (281) comprises a first fixed column (2812), the first fixed column (2812) protrudes on the first surface (2815) of the first base plate (2811), and the first surface (2815) of the first base plate (2811) and the second surface (2816) of the first base plate (2811) are oppositely arranged; The second support (282) comprises a second fixed column (2822), the second fixed column (2822) protrudes on the first surface (2825) of the second base plate (2821), and the first surface (2825) of the second base plate (2821) and the second surface (2816) of the second base plate (2821) are oppositely arranged; The elastic member (283) is a spring, one end of the elastic member (283) is sleeved on the first fixing column (2812), and the other end is sleeved on the second fixing column (2822).

20. An electronic device (1000), characterized by The folding mechanism (100) is fixedly connected with the first shell (300) and the second shell (400). The flexible screen (200) comprises a first display area (201), a second display area (202) and a third display area (203) connected in sequence, the first display area (201) is fixed on the first shell (300), and the third display area (203) is fixed on the second shell (400). When the folding mechanism (100) is in the unfolded state, the support surface (100b) supports the second display area (202). When the folding mechanism (100) is in the folded state, the second display area (202) is located in the containing space (100a).

21. A folding mechanism (100) characterized by, The main shaft (1), the first connecting piece (23), the second connecting piece (24), the synchronous piece (27) and the damping piece (28) are included, the first rotating end (231) of the first connecting piece (23) and the first rotating end (241) of the second connecting piece (24) are movably connected with the main shaft (1); The first rotating end (231) of the first connecting piece (23) is provided with a first spiral groove (2315), and the first rotating end (241) of the second connecting piece (24) is provided with a second spiral groove (2415); The synchronous piece (27) comprises a base (271), a first transmission block (272) and a second transmission block (273), the first transmission block (272) and the second transmission block (273) are protruded from the base (271); The base (271) is slidably connected with the main shaft (1), a part of the base (271) is located between the main shaft (1) and the first rotating end (231) of the first connecting piece (23), and another part of the base (271) is located between the main shaft (1) and the first rotating end (241) of the second connecting piece (24), the first transmission block (272) and the second transmission block (273) are in spiral shape, the first transmission block (272) is arranged in the first spiral groove (2315), and the second transmission block (273) is arranged in the second spiral groove (2415); The first rotating end (231) of the first connecting piece (23) is provided with a first mounting space (2314), the first mounting space (2314) is located on one side of the first spiral groove (2315), and the first mounting space (2314) comprises a first side wall (2314a) and a second side wall (2314b) oppositely arranged; The first rotating end (241) of the second connecting piece (24) is provided with a second mounting space (2414) located at one side of the second spiral groove (2415), and the second mounting space (2414) comprises oppositely arranged first and second side walls (2414a and 2414b); The damping piece (28) comprises a first support (281), a second support (282) and an elastic piece (283), the elastic piece (283) is connected between the first support (281) and the second support (282), the first support (281) and the second support (282) are slidingly connected with the main shaft (1) and located in the first mounting space (2314) and the second mounting space (2414); The elastic piece (283) is in a compressed state, the first support (281) is located between the elastic piece (283) and the first side wall (2314a) of the first mounting space (2314) and the first side wall (2414a) of the second mounting space (2414), and the second support (282) is located between the elastic piece (283) and the second side wall (2314b) of the first mounting space (2314) and the second side wall (2414b) of the second mounting space (2414).

22. The folding mechanism (100) according to claim 21, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a first protrusion (2316) protruding from the first side wall (2314a) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a second protrusion (2416) protruding from the first side wall (2414a) of the second mounting space (2414); The first support (281) comprises a first base plate (2811), a first protruding block (2813) and a second protruding block (2814), and the first and second protruding blocks (2813 and 2814) are spaced apart and protrude from the second surface (2816) of the first base plate (2811); The first protrusion (2316) of the first connecting piece (23) and the first protruding block (2813) of the first support (281) are staggered to form a clamping structure, and the second protrusion (2416) of the second connecting piece (24) and the second protruding block (2814) of the first support (281) are staggered to form a clamping structure.

23. The folding mechanism (100) according to claim 22, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a third protrusion (2317) protruding from the second side wall (2314b) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a fourth protrusion (2417) protruding from the second side wall (2414b) of the second mounting space (2414). The second support (282) comprises a second base plate (2821), a third protrusion (2823) and a fourth protrusion (2824), the third protrusion (2823) and the fourth protrusion (2824) are spaced and protrude on the second surface (2826) of the second base plate (2821); The third protrusion (2317) of the first connecting piece (23) and the third protrusion (2823) of the second support (282) are staggered to form a clamping structure, and the fourth protrusion (2417) of the second connecting piece (24) and the fourth protrusion (2824) of the second support (282) are staggered to form a clamping structure.

24. The folding mechanism (100) according to claim 23, characterized in that The first rotating end (231) of the first connecting piece (23) comprises a first limiting block (2318), the first limiting block (2318) protrudes on the first side wall (2314a) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a second limiting block (2418), the second limiting block (2418) protrudes on the first side wall (2414a) of the second mounting space (2414); A part of the first base plate (2811) is located between the main shaft (1) and the first limiting block (2318) of the first rotating end (231) of the first connecting piece (23), and a part is located between the main shaft (1) and the second limiting block (2418) of the first rotating end (241) of the second connecting piece (24); And / or, the first rotating end (231) of the first connecting piece (23) comprises a third limiting block (2319), the third limiting block (2319) protrudes on the second side wall (2314b) of the first mounting space (2314), and the first rotating end (241) of the second connecting piece (24) comprises a fourth limiting block (2419), the fourth limiting block (2419) protrudes on the second side wall (2414b) of the second mounting space (2414); A part of the second base plate (2821) is located between the main shaft (1) and the third limiting block (2319) of the first rotating end (231) of the first connecting piece (23), and a part is located between the main shaft (1) and the fourth limiting block (2419) of the first rotating end (241) of the second connecting piece (24).

25. The folding mechanism (100) according to claim 23 or 24, characterized in that The first support (281) comprises a first fixed column (2812), the first fixed column (2812) protrudes on the first surface (2815) of the first base plate (2811), and the first surface (2815) of the first base plate (2811) and the second surface (2816) of the first base plate (2811) are oppositely arranged; The second support (282) comprises a second fixed column (2822), the second fixed column (2822) protrudes on the first surface (2825) of the second base plate (2821), and the first surface (2825) of the second base plate (2821) and the second surface (2816) of the second base plate (2821) are oppositely arranged; The second support (282) comprises a second fixed column (2822), the second fixed column (2822) protrudes on the first surface (2825) of the second base plate (2821), and the first surface (2825) of the second base plate (2821) and the second surface (2816) of the second base plate (2821) are oppositely arranged; The elastic member (283) is a spring, one end of the elastic member (283) is sleeved on the first fixing column (2812), and the other end is sleeved on the second fixing column (2822).

26. The folding mechanism (100) according to any one of claims 21 to 25, characterized in that The synchronizer (27) comprises a guide block (274), the guide block (274) is protruded on the base (271), and the guide block (274) is arranged away from the first transmission block (272) and the second transmission block (273); The main shaft (1) is provided with a first guide groove (19a), the guide block (274) is arranged in the first guide groove (19a), and the base (271) is slidably connected with the main shaft (1) through the guide block (274).

27. An electronic device (1000) comprising: The folding mechanism (100) comprises a first housing (300), a second housing (400), a flexible screen (200) and any one of the folding mechanisms (100) according to claims 21 to 26. The second rotating end (233) of the first connecting member (23) is movably connected with the first housing (300), and the second rotating end (243) of the second connecting member (24) is movably connected with the second housing (400). The flexible screen (200) comprises a first display area (201), a second display area (202) and a third display area (203) connected in sequence, the first display area (201) is fixed on the first housing (300), and the third display area (203) is fixed on the second housing (400).

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