CN221237045U

CN221237045U - Rotating shaft mechanism and foldable electronic equipment

Info

Publication number: CN221237045U
Application number: CN202322555479.2U
Authority: CN
Inventors: 杨德森; 臧永强; 吴崚; 霍国亮; 汪利洋
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-06-28
Anticipated expiration: 2033-09-19

Abstract

The application provides a rotating shaft mechanism and foldable electronic equipment, wherein the rotating shaft mechanism is movably connected with a motion assembly, a synchronous structure, a first damping module and at least one second damping module between a main shaft and connecting plates so as to realize synchronous motion of the connecting plates at two sides relative to the main shaft and provide damping force for the rotating shaft mechanism. By independently arranging different components for realizing different functions, the interference among the different components is reduced, the failure risk is dispersed to each component, and the probability of component failure can be reduced. In addition, the rotating shaft mechanism is divided into the upper shaft part, the middle shaft part and the lower shaft part along the length direction, so that the structures of the upper shaft part and the lower shaft part are symmetrically arranged, and the stability and the smoothness of the rotating shaft mechanism during movement are improved; in addition, in upper shaft portion and lower shaft portion, through arranging motion subassembly, synchronization structure and first damping module in proper order by pivot mechanism's tip to the center for pivot mechanism's framework is more reasonable, can promote pivot mechanism motion's stability and precision.

Description

Rotating shaft mechanism and foldable electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to a rotating shaft mechanism and a foldable electronic device.

Background

The folding screen has a bendable characteristic, so that the electronic device carrying the folding screen, namely the folding electronic device, can be switched between an unfolding state and a folding state. Foldable electronic devices have a large display area and are convenient to carry, and are increasingly popular with consumers.

The rotating shaft mechanism is used as a core functional structure of the foldable electronic equipment and is used for realizing relative rotation between two main body parts of the foldable electronic equipment, and unfolding or folding of the folding screen is realized through relative rotation between the two main body parts. When the two main body parts rotate to be coplanar, the foldable electronic equipment presents an unfolding state, and at the moment, the folding screen presents an unfolding state and has a larger display area; when the two main body parts rotate to be stacked, the foldable electronic equipment is in a folded state and has a smaller volume, and at the moment, the folding screen is in a folded state.

However, the existing rotating shaft mechanism is unreasonable in architecture, the failure risk of components on the rotating shaft mechanism is high, and the reliability of the rotating shaft mechanism is low.

Disclosure of utility model

The application provides a rotating shaft mechanism and foldable electronic equipment, wherein the rotating shaft mechanism has a more reasonable structure mode, can reduce the failure risk of components on the rotating shaft mechanism, and improves the reliability of the rotating shaft mechanism.

An aspect of the present application provides a rotating shaft mechanism applied to a foldable electronic device, the rotating shaft mechanism including an upper shaft portion, a middle shaft portion, and a lower shaft portion sequentially disposed along a length direction, the upper shaft portion and the lower shaft portion being symmetrically disposed, and the rotating shaft mechanism including:

a main shaft;

the connecting plates are positioned at two sides of the spindle in the width direction;

The motion assembly, the synchronous structure, the first damping module and at least one group of second damping modules are movably connected between the main shaft and the connecting plate, the first damping module generates damping force in the area where the main shaft is located, and the second damping module generates damping force in the area where the connecting plate is located;

wherein, in the upper shaft part and the lower shaft part, the movement assembly, the synchronization structure and the first damping module are sequentially arranged from the end part of the rotating shaft mechanism to the center of the rotating shaft mechanism; at least one second damping module is arranged at the middle shaft part, and each second damping module comprises two second damping modules which are respectively connected with connecting plates at two sides of the main shaft.

According to the rotating shaft mechanism, the motion assembly, the synchronization structure, the first damping module and the at least one second damping module are movably connected between the main shaft and the connecting plate, so that the movement of the connecting plate relative to the main shaft is realized, the synchronous movement of the connecting plates at two sides of the main shaft can be ensured, damping force is provided for the rotating shaft mechanism, and the functional requirements of the rotating shaft mechanism in all aspects are met. Through setting up the different parts that realize different functions alone, reduced the interference between the different parts, with the risk dispersion of inefficacy to each part, can reduce the probability that the part inefficacy, promote pivot mechanism's reliability. In addition, the rotating shaft mechanism is divided into the upper shaft part, the middle shaft part and the lower shaft part along the length direction, so that the structures of the upper shaft part and the lower shaft part are symmetrically arranged, and the stability and the smoothness of the rotating shaft mechanism during movement are improved; in addition, in upper shaft portion and lower shaft portion, through arranging motion subassembly, synchronization structure and first damping module in proper order from the tip to the center of pivot mechanism for pivot mechanism's framework is more reasonable, helps promoting pivot mechanism's stability, precision, performance such as reliability.

In one possible embodiment, the motion assembly includes a primary swing arm and a secondary swing arm located at the upper shaft portion and the lower shaft portion, the primary swing arm being disposed adjacent the secondary swing arm;

One end of the main swing arm is in sliding and rotating connection with the main shaft, and the other end of the main swing arm is in sliding and rotating connection with the connecting plate at the corresponding side; one end of the auxiliary swing arm is in sliding and rotating connection with the main shaft, and the other end of the auxiliary swing arm is in sliding connection with the connecting plate on the corresponding side.

The main swing arm and the auxiliary swing arm jointly act to drive the connecting plate to move relative to the main shaft, and the main swing arm and the auxiliary swing arm are close to the end part of the rotating shaft mechanism, so that the rotating shaft mechanism can be better subjected to motion guiding and track constraint. Through making all slide and rotate between the both ends of main swing arm and main shaft and the connecting plate and be connected, the activity degree of freedom of main swing arm is big, can cooperate the keysets to support steadily folding screen's kink. The auxiliary swing arm is in sliding and rotating connection with the main shaft, and is in sliding connection with the connecting plate, so that the auxiliary swing arm has enough freedom degree to meet the requirement of the connecting plate on the movement of the main shaft.

In one possible embodiment, the secondary swing arm is located on the side of the end of the primary swing arm facing away from the spindle mechanism.

Through setting up the auxiliary swing arm in the one side of main swing arm deviating from the tip of pivot mechanism, the main swing arm is closer to pivot mechanism's tip, carries out motion direction and orbit constraint to pivot mechanism both ends through the main swing arm, and the whole motion to pivot mechanism that can be better leads the constraint to promote pivot mechanism motion's accuracy.

In one possible embodiment, the motion assembly further comprises an auxiliary swing arm located at the middle shaft portion, one end of the auxiliary swing arm is movably connected with the main shaft, and the other end of the auxiliary swing arm is connected with the connecting plate.

Through setting up supplementary swing arm and main swing arm, vice swing arm cooperation for the connection between connecting plate and the main shaft is more reliable, and pivot mechanism's motion is more stable, smooth. And moreover, the motion guiding and track restraining of each region in the length direction of the rotating shaft mechanism are realized, so that the balance of the motion of the rotating shaft mechanism is better and the precision is higher.

In one possible embodiment, one end of the auxiliary swing arm is slidably and rotatably connected to the spindle, and the other end of the auxiliary swing arm is slidably and rotatably connected to the connection plate.

Through making the both ends of supplementary swing arm and main shaft, connecting plate all slide and rotate and be connected, can realize that the connecting plate rotates and translates for the main shaft, the orbit constraint effect of centering shaft portion is better, and the degree of freedom of supplementary swing arm is bigger, and the keysets also can be connected with supplementary swing arm.

In one possible embodiment, the auxiliary swing arm is arranged between the first damping module and the second damping module.

Through setting up auxiliary swing arm between first damping module and second damping module, auxiliary swing arm can be spaced apart first damping module and second damping module, and the helping hand that auxiliary swing arm provided can weaken damping mechanism's damping effect, guarantees that pivot mechanism motion is smooth and easy.

In one possible implementation mode, the connecting plates on two sides of the main shaft are provided with threading grooves, the threading grooves on the connecting plates on two sides are arranged oppositely, and the threading grooves are positioned on the middle shaft part.

Through offer the threading groove on the connecting plate of main shaft both sides to with the symmetrical setting of threading groove of both sides connecting plate, the flexible circuit board of being convenient for passes the threading groove of both sides connecting plate smoothly, and guarantee the reliability of flexible circuit board in the repeated bending process. And through setting up the threading groove in the axis portion, can guarantee to have sufficient space to set up the threading groove, also be convenient for the flexible circuit board to be connected with the device of pivot mechanism both sides.

In one possible embodiment, the number of the second damping modules is one, and the two second damping modules are arranged on the same side of the wire through slot, or the two second damping modules are respectively arranged on two sides of the wire through slot.

In one possible embodiment, the synchronization structure includes:

Two synchronous swing arms; the first ends of the two synchronous swing arms are respectively connected to two sides of the main shaft in the width direction in a rotating way and synchronously and reversely rotate; the second ends of the two synchronous swing arms are respectively connected with the connecting plates on the two sides of the main shaft in a sliding way.

The first ends of the two synchronous swing arms are enabled to synchronously and reversely rotate, the second ends of the two synchronous swing arms are driven to synchronously and reversely rotate, the second ends of the two synchronous swing arms slide along the connecting plates on two sides, the connecting plates on two sides are guided, and the connecting plates on two sides drive the first shell and the second shell to synchronously move.

In one possible embodiment, the first ends of both synchronization swing arms are provided with synchronization gears, which are intermeshed with each other.

Through set up synchronous gear in the first end of two synchronous swing arms, two synchronous gear intermeshing realizes the first end synchronization and the reverse rotation of two synchronous swing arms through the transmission effect between two synchronous gears.

In one possible embodiment, the first damping module includes:

The two support shafts are arranged at intervals along the width direction of the main shaft;

the damping structure is sleeved on the two support shafts and generates damping force in the area where the main shaft is located.

The damping structure is sleeved on the two support shafts by arranging the two support shafts on the main shaft as a support foundation, and the damping structure damps force in the area of the main shaft along with the movement of the connecting plate relative to the main shaft.

In one possible embodiment, the damping structure comprises:

two driving members; the two driving parts are respectively sleeved on the two supporting shafts and synchronously and reversely rotate;

and the elastic component is sleeved on the two supporting shafts and is abutted with the two driving parts, and the driving parts rotate and squeeze the elastic component to drive the elastic component to deform.

Through respectively the cover of establishing two driving pieces on two back shafts to establish elastic component cover on two back shafts, make elastic component and driving piece butt, the driving piece can rotate along with the motion of pivot mechanism, in order to extrude elastic component, drive elastic component produces the deformation, in order to produce damping force in the region that the main shaft is located.

In one possible embodiment, the second damping module comprises:

one end of the damping swing arm is rotationally connected with the main shaft, and the other end of the damping swing arm is in sliding connection with the connecting plates at two sides of the main shaft;

the damping component is arranged corresponding to the connecting plate at the corresponding side and is in butt joint with the damping swing arm; the damping component is extruded by the damping swing arm to deform so as to generate damping force in the area where the connecting plate is located.

Through setting up the damping swing arm, make the one end and the main shaft rotation of damping swing arm be connected, the other end of damping swing arm slides along the connecting plate of main shaft both sides to correspond the connecting plate and set up damping assembly. In the process of the movement of the rotating shaft mechanism, along with the sliding of the damping swing arm along the connecting plate, the damping swing arm extrudes the damping assembly to drive the damping assembly to deform so as to generate damping force in the area where the connecting plate is located.

In one possible implementation mode, a mounting groove is formed in the damping swing arm, an avoidance opening is formed in one end, facing the main shaft, of the damping swing arm, and the avoidance opening is communicated with the mounting groove;

The damping component is clamped in the mounting groove, and one side of the damping component, facing the main shaft, passes through the avoidance opening and is abutted with the side wall of the main shaft; as the connection plate moves relative to the main shaft, the damping assembly slides along the side wall of the main shaft and elastically deforms in the width direction of the main shaft.

Through seting up the mounting groove on the damping swing arm to seting up the opening of dodging and mounting groove intercommunication towards the one end of main shaft at the damping swing arm, establishing damping subassembly card in the mounting groove, damping subassembly passes the lateral wall butt of dodging opening and main shaft. Along with the movement of the connecting plate relative to the main shaft, the damping component slides along the side wall of the main shaft, and the side wall of the main shaft presses the damping component, so that the damping component elastically deforms in the width direction of the main shaft, and the damping force provided by the damping component is changed.

In one possible embodiment, the damping assembly includes a bracket assembly and at least one elastic member;

the bracket component is abutted with the side wall of the main shaft and slides along the side wall of the main shaft; one end of the elastic piece is propped against the bracket component, and the other end of the elastic piece is propped against the inner side wall of one side of the installation groove, which is away from the main shaft.

In one possible embodiment, the spindle mechanism further includes:

the adapter plate is positioned between the connecting plate and the main shaft and is connected with the motion assembly.

When the movement path (bending radius) of the bendable part of the folding screen is larger, for example, when the folding screen is applied to an external folding electronic device, the movement path (bending radius) of the bendable part of the folding screen is larger than that of the rotating shaft mechanism, so that the space occupied by the bendable part of the folding screen is larger, the rotating shaft mechanism and the bendable part are increased by additionally arranging the adapter plate between the connecting plate and the main shaft, the contact area between the rotating shaft mechanism and the bendable part is increased by jointly supporting the adapter plate and the adapter plate, and the posture of the adapter plate can be changed along with the shape change of the bendable part under the driving of the moving assembly, so that the bendable part is supported along with the shape. Therefore, the supporting strength of the rotating shaft mechanism to the bendable part of the folding screen is enhanced, the stress balance of the bendable part is improved, and the bendable part is ensured to have enough strength and stability under any gesture.

In one possible embodiment, the folding screen is arranged outside the connecting plates at two sides of the main shaft when the foldable electronic device is in the folded state.

When the rotating shaft mechanism is in a folding state, the folding screen is arranged on the outer side of the rotating shaft mechanism in a surrounding mode, and the rotating shaft mechanism is applied to the external folding type electronic equipment.

Another aspect of the present application provides a foldable electronic device, including a first housing, a second housing, a folding screen, and a hinge mechanism as described above;

The connecting plates at two sides of the rotating shaft mechanism are respectively connected with the first shell and the second shell, the folding screen is attached to the first shell and the second shell, and the folding screen is supported on the rotating shaft mechanism.

The foldable electronic equipment provided by the application comprises a first shell, a second shell, a rotating shaft mechanism and a folding screen, wherein the rotating shaft mechanism is movably connected with a motion assembly, a synchronous structure, a first damping module and at least one second damping module between a main shaft and a connecting plate so as to realize the motion of the connecting plate relative to the main shaft, ensure the synchronous motion of the connecting plates at two sides of the main shaft and provide damping force for the rotating shaft mechanism, so that the functional requirements of the rotating shaft mechanism in all aspects are met. Through setting up the different parts that realize different functions alone, reduced the interference between the different parts, with the risk dispersion of inefficacy to each part, can reduce the probability that the part inefficacy, promote pivot mechanism's reliability. In addition, the rotating shaft mechanism is divided into the upper shaft part, the middle shaft part and the lower shaft part along the length direction, so that the structures of the upper shaft part and the lower shaft part are symmetrically arranged, and the stability and the smoothness of the rotating shaft mechanism during movement are improved; in addition, in upper shaft portion and lower shaft portion, through arranging motion subassembly, synchronization structure and first damping module in proper order from the tip to the center of pivot mechanism for pivot mechanism's framework is more reasonable, helps promoting pivot mechanism's stability, precision, performance such as reliability.

Drawings

Fig. 1 is a schematic structural diagram of a foldable electronic device in an unfolded state according to an embodiment of the present application;

FIG. 2 is a schematic view of the foldable electronic device shown in FIG. 1 in a folded state;

Fig. 3 is an exploded view of a foldable electronic device according to an embodiment of the present application;

FIG. 4 is a front perspective view of a rotary mechanism according to an embodiment of the present application in an unfolded state;

FIG. 5 is a front perspective view of the spindle mechanism of FIG. 4 in a folded position;

FIG. 6 is a rear perspective view of the spindle mechanism of FIG. 4 in an extended position;

FIG. 7 is an exploded view of the spindle mechanism of FIG. 4;

FIG. 8 is a front view of the spindle mechanism of FIG. 4;

FIG. 9 is an enlarged view of a portion of the spindle mechanism of FIG. 4 at A under a formal viewing angle;

FIG. 10 is a cross-sectional view taken at A-A of FIG. 9;

FIG. 11 is a partially exploded view of a main swing arm and an adapter plate according to an embodiment of the present application;

FIG. 12 is a cross-sectional view at B-B in FIG. 9;

FIG. 13 is a cross-sectional view corresponding to B-B in FIG. 9 with the spindle mechanism in a folded condition;

FIG. 14 is a partial enlarged view at B in FIG. 4;

FIG. 15 is an enlarged view of a portion of FIG. 4 at C;

FIG. 16 is a partial enlarged view at D in FIG. 4;

FIG. 17 is a schematic view of the spindle mechanism of FIG. 4;

fig. 18 is an exploded view of the spindle of fig. 17.

Detailed Description

The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application.

Embodiments of the present application provide a foldable electronic device, including but not limited to foldable electronic products such as a mobile phone, a tablet computer (tablet personal computer), a laptop (laptop computer), a notebook computer, a Personal Digital Assistant (PDA), a personal computer, a multimedia player, an electronic book reader, a vehicle-mounted device, or a wearable device. Wherein the wearable device includes, but is not limited to, a smart bracelet, a smart watch, a smart head mounted display, smart glasses, and the like.

Fig. 1 is a schematic structural diagram of a foldable electronic device in an unfolded state according to an embodiment of the present application; fig. 2 is a schematic structural view of the foldable electronic device shown in fig. 1 in a folded state. Referring to fig. 1 and 2, the present embodiment will be described taking a foldable electronic device 1 as an example of a foldable mobile phone.

For the foldable electronic device 1, the foldable electronic device 1 may have different use states under different use scenarios. Fig. 1 shows the foldable electronic device 1 in an unfolded state, where an unfolding angle α of the foldable electronic device 1 is, for example, 180 °, and at this time, the foldable electronic device 1 may implement a large screen display; fig. 2 shows the foldable electronic device 1 in a folded state, in which case the foldable electronic device 1 is small and portable.

It should be noted that the angles illustrated in this embodiment allow for slight deviations. For example, the unfolding angle α of the foldable electronic device 1 shown in fig. 1 is 180 °, which means that the unfolding angle α may be 180 °, or may be about 180 °, such as 170 °, 175 °, 185 °, 190 °, or the like. The angles illustrated hereinafter are to be understood identically.

In addition, the foldable electronic device 1 shown in fig. 1 and 2 is an electronic device that can be folded once, and the electronic device includes two parts that can rotate with each other, and when the two parts rotate to be coplanar, the foldable electronic device 1 assumes an unfolded state (as shown in fig. 1), and when the two parts rotate to be stacked on each other, the foldable electronic device 1 assumes a folded state (as shown in fig. 2). In other embodiments, the foldable electronic device 1 may be an electronic device that may be folded multiple times (more than two times), where the foldable electronic device 1 may include multiple portions that are sequentially connected in a rotating manner, and two adjacent portions may be relatively far apart to be unfolded to be folded, and two adjacent portions may be relatively close to be folded.

Fig. 3 is an exploded view of a foldable electronic device according to an embodiment of the present application. Referring to fig. 3, the foldable electronic device 1 includes a housing assembly 10 and a folding screen 20, the folding screen 20 is supported by and connected to a side surface of the housing assembly 10, and a side surface of the folding screen 20 facing away from the housing assembly 10 is a display surface (not shown) thereof for displaying information and providing an interactive interface for a user. The present embodiment defines the display surface of the folding screen 20 as the front surface thereof, and defines the other side surface of the folding screen 20 opposite to the front surface as the rear surface thereof, that is, the front surface of the folding screen 20 is exposed outside the housing assembly 10, and the rear surface of the folding screen 20 faces the housing assembly 10 and is connected to the housing assembly 10. Accordingly, a side surface of the housing assembly 10 facing the folding screen 20 is defined as a front surface of the housing assembly 10, and a side surface of the housing assembly 10 facing away from the folding screen 20 is defined as a rear surface of the housing assembly 10.

In this embodiment, the folding screen 20 may be, but is not limited to, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini-led (mini organic light-emitting diode) display screen, a micro-led (micro organic light-emitting diode) display screen, a micro-organic light-emitting diode (micro organic light-emitting diode) display screen, or a quantum dot LIGHT EMITTING diodes (QLED) display screen.

The folding screen 20 may include a first non-bent portion 21, a second non-bent portion 22, and a bendable portion 23, the bendable portion 23 being located between the first non-bent portion 21 and the second non-bent portion 22. In the use process of the foldable electronic device 1, the first non-bending part 21 and the second non-bending part 22 always keep a plane state, and the bendable part 23 can bend to change the included angle between the first non-bending part 21 and the second non-bending part 22, so that the folding screen 20 is folded or unfolded along with the movement of the housing assembly 10, and the foldable electronic device 1 is switched between the folded state and the unfolded state.

Illustratively, in the folding screen 20, at least the bendable portion 23 is made of a flexible material, so that the bendable portion 23 is bendable. The first non-bending portion 21 and the second non-bending portion 22 may be made of a flexible material, may be made of a rigid material, or may be made of a rigid material or a flexible material, which is not limited in this embodiment.

The folding screen 20 can be switched between an unfolded state and a folded state by the housing assembly 10. As shown in fig. 1 and 3, when the folding screen 20 is in the unfolded state, the first non-folded portion 21 and the second non-folded portion 22 are in the unfolded state relatively far away, the bendable portion 23 is in the flattened state in which no bending occurs, and the first non-folded portion 21, the second non-folded portion 22 and the bendable portion 23 face the same direction and are in the coplanar state. At this time, the included angle between the first non-bending portion 21 and the second non-bending portion 22 is 180 °, and the folding screen 20 can realize large-screen display, so that richer information can be provided for the user, and better use experience is brought to the user.

As shown in fig. 2 and 3, when the folding screen 20 is in the folded state, the first non-folded portion 21 and the second non-folded portion 22 are stacked relatively, the bendable portion 23 is in the folded state, and the angle of the bending of the bendable portion 23 is 180 °, for example. At this time, the foldable electronic device 1 has a small volume and is convenient to carry and store.

It should be noted that, the foldable electronic device 1 shown in the drawings is an external folding electronic device, when in a folded state, the first non-folding portion 21 and the second non-folding portion 22 of the folding screen 20 are opposite, the housing assembly 10 is located between the first non-folding portion 21 and the second non-folding portion 22, and the folding screen 20 is enclosed outside the housing assembly 10 and is visible to a user. When the foldable electronic device is in the folded state, the folding screen 20 is exposed, and the display function can be realized by using the folding screen 20, so that the display screen is not required to be additionally arranged on the back surface of the shell in order to realize the display function of the foldable electronic device 1 in the folded state.

In other examples, the foldable electronic device 1 may also be an in-folded electronic device, when in a folded state, the first non-folded portion 21 and the second non-folded portion 22 of the folding screen 20 are relatively attached, the foldable portion 23 may be folded, and the housing assembly 10 is protected outside the folding screen 20, so as to prevent the folding screen 20 from being scratched by a hard object. If the foldable electronic device needs to realize the display function in the folded state, a display screen can be additionally arranged on the back of the shell, and the foldable electronic device 1 can realize the display function by means of the display screen in the folded state.

In addition, in some embodiments, the foldable electronic device 1, particularly an in-folded electronic device, may hover at an angle between the unfolded state and the folded state, and exemplary hover angles of the foldable electronic device 1 may be 120 °, 130 °, 140 °, 150 °, or the like. Wherein the damping force provided by the housing assembly 10 may be relied upon to cause the housing assembly 10 to hover in a semi-deployed state between a folded state and a deployed state, the folding screen 20 staying with the housing assembly 10 in the semi-deployed state. At this time, the foldable portion 23 of the folding screen 20 is also in a folded state, and the folding degree of the foldable portion 23 is smaller than that in the folded state, and the first non-folded portion 21 and the second non-folded portion 22 of the folding screen 20 are inclined relatively, and the included angle between the first non-folded portion 21 and the second non-folded portion 22 is, for example, 120 °, 130 °, 140 ° or 150 °.

The housing assembly 10 is used to support and secure the folding screen 20 and to move the folding screen 20 between a folded state and an unfolded state. Referring to fig. 3, the housing assembly 10 includes a first housing 10a, a second housing 10b, and a rotation shaft mechanism 10c, the rotation shaft mechanism 10c being connected between the first housing 10a and the second housing 10b, the first housing 10a and the second housing 10b being rotatably connected by the rotation shaft mechanism 10c, thereby effecting relative rotation between the first housing 10a and the second housing 10 b.

The first casing 10a supports and fixes the first non-bending portion 21 of the folding screen 20, the second casing 10b supports and fixes the second non-bending portion 22 of the folding screen 20, in other words, the first non-bending portion 21 of the folding screen 20 is fixedly connected to the first casing 10a, the second non-bending portion 22 of the folding screen 20 is fixedly connected to the second casing 10b, and the bendable portion 23 of the folding screen 20 is disposed corresponding to the rotating shaft mechanism 10 c. When the rotating shaft mechanism 10c drives the first casing 10a and the second casing 10b to rotate relatively, the first non-bending portion 21 and the second non-bending portion 22 of the folding screen 20 change the orientation, and the bendable portion 23 of the folding screen 20 bends or flattens along with the change of the orientation of the first non-bending portion 21 and the second non-bending portion 22.

The rotating shaft mechanism 10c drives the first casing 10a and the second casing 10b to rotate relatively, so that the foldable electronic device 1 is switched between a folded state and an unfolded state. Wherein the first casing 10a and the second casing 10b may be rotated in a direction away from each other until they are coplanar, at this time, the casing assembly 10 is in an unfolded state, and the folding screen 20 is in an unfolded state along with the unfolding of the casing assembly 10, as shown in fig. 1; the first casing 10a and the second casing 10b may also be rotated in directions approaching each other until they are stacked relatively, at which time the casing assembly 10 is in a folded state and the folding screen 20 is in a folded state with the folding of the casing assembly 10, as shown in fig. 2.

For example, the first housing 10a may have a support surface facing the first non-bent portion 21 of the folding screen 20, and the first non-bent portion 21 of the folding screen 20 is attached to the support surface of the first housing 10a, for example, the first non-bent portion 21 of the folding screen 20 is adhered to the support surface of the first housing 10 a. Similarly, the second casing 10b may have a support surface facing the second non-bent portion 22 of the folding screen 20, and the second non-bent portion 22 of the folding screen 20 is attached to the support surface of the second casing 10b, for example, the second non-bent portion 22 of the folding screen 20 is adhered to the support surface of the second casing 10 b.

In addition, each of the first case 10a and the second case 10b may have an accommodation space in which some functional devices (not shown in the drawings) of the foldable electronic device 1 are mounted, for example, some devices in which a circuit board, a battery, an image pickup module, a microphone, a speaker, and the like are mounted. For example, circuit boards may be provided in both the first case 10a and the second case 10b, and electrical connection between devices in both cases may be achieved through the circuit boards in both cases; the battery for supplying power to the device may be provided only in the first casing 10a or the second casing 10b, or the battery may be provided in both the first casing 10a and the second casing 10 b; as for other devices such as an image pickup module, a microphone, a speaker, and the like, they may be provided intensively in the first casing 10a or the second casing 10b, or some devices may be provided in the first casing 10a, and some devices may be provided in the second casing 10 b.

The first and second cases 10a and 10b may each include a middle frame (not shown) connected between the folding screen 20 and a rear cover (not shown), a side surface of the middle frame facing the folding screen 20 forming the above-mentioned supporting surface, the folding screen 20 may be attached to the side surface of the middle frame, the rear cover connected to a side of the middle frame facing away from the folding screen 20, and the middle frame and the rear cover enclosing together to form a receiving space for mounting the device.

The spindle mechanism 10c generally includes a spindle and connecting components movably connected to two sides of the spindle, and the connecting components on two sides are respectively connected to the first casing 10a and the second casing 10 b. The connecting components at the two sides synchronously move relative to the main shaft to drive the first shell 10a and the second shell 10b to relatively move, so that the foldable electronic device 1 can be switched between an unfolding state and a folding state. Wherein, the connecting components between the main shaft and the two sides are connected with components such as a moving component (comprising a main swing arm and an auxiliary swing arm), a synchronous structure, a damping module and the like, the motion component is used for realizing the motion of the connecting component relative to the main shaft, the synchronous structure is used for enabling the connecting components on two sides of the main shaft to synchronously move, and the damping module is used for providing damping force.

In order to save space of the spindle mechanism, in the related art, either the damping module and the moving component (e.g., the auxiliary swing arm) are combined to be designed as one integral module, or the synchronous structure and the moving component (e.g., the auxiliary swing arm) are combined to be designed as one integral module. In such a design, in the overall module of these combined designs, once a certain component fails, the overall module will fail, which increases the failure risk of the component on the spindle mechanism, and affects the reliability of the spindle mechanism. Also, after a failure of a certain component, the entire module needs to be replaced, which leads to an increase in maintenance cost of the spindle mechanism.

Therefore, the embodiment of the application improves the rotating shaft mechanism, and the motion assembly, the synchronous structure, the first damping module and the at least one second damping module are movably connected between the main shaft and the connecting plate so as to realize the motion of the connecting plate relative to the main shaft, ensure the synchronous motion of the connecting plates at two sides of the main shaft and provide damping force for the rotating shaft mechanism, thereby meeting the functional requirements of all aspects of the rotating shaft mechanism. Through setting up the different parts that realize different functions alone, reduced the interference between the different parts, with the risk dispersion of inefficacy to each part, can reduce the probability that the part inefficacy, promote pivot mechanism's reliability. In addition, the rotating shaft mechanism is divided into the upper shaft part, the middle shaft part and the lower shaft part along the length direction, so that the structures of the upper shaft part and the lower shaft part are symmetrically arranged, and the stability and the smoothness of the rotating shaft mechanism during movement are improved; in addition, in upper shaft portion and lower shaft portion, through arranging motion subassembly, synchronization structure and first damping module in proper order from the tip to the center of pivot mechanism for pivot mechanism's framework is more reasonable, helps promoting pivot mechanism's stability, precision, performance such as reliability.

The spindle mechanism 10c according to the embodiment of the present application will be described in detail below.

FIG. 4 is a front perspective view of a rotary mechanism according to an embodiment of the present application in an unfolded state; FIG. 5 is a front perspective view of the spindle mechanism of FIG. 4 in a folded position; fig. 6 is a rear perspective view of the spindle mechanism of fig. 4 in an expanded state.

Referring to fig. 4 and 5, the spindle mechanism 10c includes a spindle 100 and a connection assembly 200, the spindle 100 is a main body supporting structure of the spindle mechanism 10c, the connection assembly 200 is movably connected to two sides of the spindle 100, and the connection assemblies 200 on two sides of the spindle 100 are respectively connected to the first casing 10a and the second casing 10 b. The main shaft 100 may be extended along the side edges of opposite sides of the first and second housings 10a and 10b, and the main shaft 100 corresponds to a rotation axis of the housing assembly 10, and the first and second housings 10a and 10b rotate around the length direction of the main shaft 100. The connection assemblies 200 at both sides of the main shaft 100 synchronously and relatively move with respect to the main shaft 100 to drive the first casing 10a and the second casing 10b to synchronously and relatively move, so as to realize the switching of the casing assemblies 10 between the unfolded state and the folded state.

The spindle mechanism 10c further includes components connected between the spindle 100 and the connection assembly 200, such as components of the motion assembly 300, the synchronization structure 400, the damping mechanism 500, etc., which will be described later, and which can be movably connected between the spindle 100 and the connection assembly 200. The motion assembly 300 is used for realizing the rotation and translation of the connection assembly 200 relative to the spindle 100, so as to realize the relative motion of the first casing 10a and the second casing 10b driven by the rotating shaft mechanism 10c, and realize the switching of the casing assembly 10 between the unfolded state and the folded state; the synchronization structure 400 is used for synchronously moving the connection assemblies 200 at two sides of the spindle 100 relative to the spindle 100, so that the first shell 10a and the second shell 10b synchronously rotate and translate, and the stability and reliability of the movement of the shell assemblies 10 are ensured; the damping mechanism 500 is used for providing damping force, ensuring stability of the housing assembly 10 in the unfolding state, folding state and state transition process, and improving the operation hand feeling of the foldable device.

Referring to fig. 4, the connection assemblies 200 on both sides of the main shaft 100 are shown in a state of being unfolded on both sides of the main shaft 100, and the connection assemblies 200 on both sides of the main shaft 100 are coplanar with the main shaft 100, at this time, the rotation shaft mechanism 10c is in an unfolded state, and the foldable electronic device 1 is in an unfolded state. Referring to fig. 5, the state in which the connection assemblies 200 on both sides of the main shaft 100 are adjacent to each other and folded at one side of the main shaft 100 (thickness direction) is shown, the connection assemblies 200 on both sides of the main shaft 100 are arranged approximately perpendicular to the main shaft 100 and opposite to each other, and at this time, the rotation shaft mechanism 10c is in a folded state, and the foldable electronic device 1 is in a folded state accordingly.

For convenience of description, in the present embodiment, a side surface of the hinge mechanism 10c for supporting the folding screen 20 is defined as a front surface thereof, and a side surface of the hinge mechanism 10c facing away from the folding screen 20 is defined as a rear surface thereof. Wherein the front surface of the main shaft 100 and the front surface of the connection assembly 200 are both side surfaces supporting the folding screen 20, and the back surface of the main shaft 100 and the back surface of the connection assembly 200 are both side surfaces facing away from the folding screen 20.

When the rotating shaft mechanism 10c is applied to the external folding electronic device, the folding screen 20 is wrapped on the outer side of the rotating shaft mechanism 10c when the rotating shaft mechanism 10c is in a folded state. That is, when the hinge mechanism 10c is in the folded state, the folding screen 20 is connected to the opposite side surfaces of the two connection assemblies 200, the opposite side surfaces of the two connection assemblies 200 are the front surfaces of the connection assemblies 200, and the opposite side surfaces of the two connection assemblies 200 are the front surfaces of the connection assemblies 200.

As shown in fig. 4 and 5, in order to facilitate the connection between the rotating shaft mechanism 10c and the folding screen 20, structural components (such as grooves, screws, etc.) for accommodating and fixing the components of the moving assembly 300, the synchronizing structure 400, the damping mechanism 500, etc. on the main shaft 100 and the connection assembly 200 may be disposed at the rear surface of the rotating shaft mechanism 10c, and the components of the moving assembly 300, the synchronizing structure 400, the damping mechanism 500, etc. may be exposed at the rear surface of the rotating shaft mechanism 10 c. On the one hand, when the external folding electronic device is in a folding state, the back surfaces of the connecting assemblies 200 on the two sides of the main shaft 100 are close to and opposite to each other, and the assembly and the matching between the moving assembly 300, the synchronous structure 400, the damping mechanism 500 and other components are convenient by installing the components on the side where the back surface of the rotating shaft mechanism 10c is located; on the other hand, the integrity of the front surface of the spindle mechanism 10c can be maintained to a greater extent, so that the front surface of the spindle 100 and the front surface of the connecting assembly 200 can maintain a larger surface area and a higher flatness (see fig. 6), which is helpful for increasing the connection area between the folding screen 20 and the spindle 100 and the connecting assembly 200, enhancing the connection strength between the folding screen 20 and the spindle mechanism 10c, and improving the stability and reliability of the bendable portion 23 of the folding screen 20.

When the rotating shaft mechanism 10c is applied to the foldable electronic device, the rotating shaft mechanism 10c is enclosed outside the foldable portion 23 of the folding screen 20 when the rotating shaft mechanism 10c is in the folded state. That is, when the rotating shaft mechanism 10c is in the folded state, the folding screen 20 is connected to the opposite side surfaces of the two connecting assemblies 200, the opposite side surfaces of the two connecting assemblies 200 are the front surfaces of the connecting assemblies 200, and the opposite side surfaces of the two connecting assemblies 200 are the back surfaces of the connecting assemblies 200.

For the purpose of more reasonable and precise assembly and assembly of the components such as the motion assembly 300, the synchronization structure 400, and the damping mechanism 500, the rotating shaft mechanism 10c is usually disposed on the opposite sides of the connection assembly 200, for example, in a folded state. For the foldable electronic device, these components are disposed on the side of the hinge mechanism 10c facing the folding screen 20, in other words, these components may be exposed on the front surface of the hinge mechanism 10c, and structural components such as grooves or screws for accommodating and fixing these components may be disposed on the front surfaces of the main shaft 100 and the connection assembly 200.

In the following, the spindle mechanism 10c is applied to an out-folding electronic device, and in a folded state, the front surface of the connection assembly 200 is the opposite surface of the connection assembly 200 on both sides of the spindle 100.

Fig. 7 is an exploded view of the spindle mechanism of fig. 4. Referring to fig. 7, the connection assembly 200 provided at both sides of the main shaft 100 includes connection plates 210, the connection plates 210 being located at both sides of the main shaft 100 in the width direction, the connection plates 210 at both sides of the main shaft 100 being connected to the first case 10a and the second case 10b, respectively, for example, the connection plates 210 being in plane contact with the first case 10a (the second case 10 b), and the connection plates 210 being fastened to the first case 10a (the second case 10 b) by screws, or the connection plates 210 being welded or bonded to the first case 10a (the second case 10 b).

The connecting plates 210 are movably connected with the main shaft 100 by means of the moving assembly 300, the synchronizing structure 400, the damping mechanism 500 and other components, so that the two connecting plates 210 can rotate and translate relative to the main shaft 100 in the middle, and the two connecting plates 210 drive the first shell 10a and the second shell 10b to relatively move, so that the shell assembly 10 can be switched between an unfolded state and a folded state. And, it is possible to ensure the synchronous movement of the connection plates 210 at both sides of the main shaft 100 and to provide a damping force for the connection plates 210, to ensure the synchronous movement of the first and second cases 10a and 10b, and to provide a damping force required for maintaining stability and reliability of the case assembly 10 in the unfolded state, the folded state, and the state transition.

In the case of the out-folding electronic apparatus, since the folding screen 20 is wrapped around the hinge mechanism 10c in the folded state, the movement path (bending radius) of the folding screen 20 is larger than the movement path (bending radius) of the hinge mechanism 10c when the folding state is changed from the unfolded state to the folded state. In order to meet the bending requirement of the folding screen 20 of the out-folding electronic device, the ratio occupied by the bendable portion 23 of the folding screen 20 of the out-folding electronic device is generally larger than that of the folding screen 20 of the in-folding electronic device, or in other words, the width of the bendable portion 23 is larger in the width direction of the rotation axis mechanism 10 c.

In this regard, with continued reference to fig. 7, in order to support the bendable portion 23 of the folding screen 20 stably, in this embodiment, the connection assemblies 200 disposed on both sides of the main shaft 100 may further include adapter plates 220, where the adapter plates 220 on both sides of the main shaft 100 are respectively located between the connection plates 210 on the corresponding sides and the main shaft 100, and the adapter plates 220 are movably connected between the main shaft 100 and the connection plates 210. When the spindle mechanism 10c supports the folding screen 20, the spindle 100 and the adapter plate 220 may correspond to the bendable portion 23 of the folding screen 20, in other words, the spindle 100 and the adapter plate 220 together support the bendable portion 23 of the folding screen 20; the connection plates 210 located outside the two adapter plates 220 may correspond to the first non-bending portion 21 (the region near the bendable portion 23) and the second non-bending portion 22 (the region near the bendable portion 23), in other words, the connection plates 210 on two sides support the first non-bending portion 21 and the second non-bending portion 22, respectively.

The adapter plate 220 can be positioned by means of a moving assembly 300 movably connected between the spindle 100 and the connecting plate 210, and the moving assembly 300 drives the adapter plate 220 to rotate and translate relative to the spindle 100 during the rotation of the rotating shaft mechanism 10 c. Moreover, the movement track of the adapter plate 220 is not limited by the connection plate 210, and the posture of the adapter plate 220 can be changed along with the shape change of the bendable portion 23 of the folding screen 20, so that the position of the adapter plate 220 is always matched with the bendable portion 23 of the folding screen 20, no matter what bending posture (such as a flattening state, a folding state or a process of switching between two states) the bendable portion 23 is in, the adapter plate 220 can be contacted with a corresponding area of the bendable portion 23, and the corresponding area of the bendable portion 23 can be supported stably.

By adding the adapter plate 220 between the spindle 100 and the connecting plate 210, the space occupied by the whole rotating shaft mechanism 10c is increased, the spindle 100 and the adapter plate 220 jointly support the bendable portion 23 of the folding screen 20, the contact area between the rotating shaft mechanism 10c and the bendable portion 23 is increased, the posture of the adapter plate 220 can be changed along with the change of the form of the bendable portion 23, the support of the adapter plate 220 at any posture of the bendable portion 23 can be ensured, and the support is equivalent to the support of the bendable portion 23 along with the shape of the adapter plate 220. In this way, the supporting strength of the rotating shaft mechanism 10c on the bendable portion 23 of the folding screen 20 is enhanced, the stress balance of the bendable portion 23 is improved, the bendable portion 23 is ensured to have enough strength and stability under any gesture, and the reliability of the bendable portion 23 is improved.

As for the connection between the spindle mechanism 10c and the folding screen 20, in practical application, the spindle 100 of the spindle mechanism 10c generally corresponds to the central portion of the foldable portion 23 of the folding screen 20, and when the foldable portion 23 is in different postures, the position and the form of the central portion of the foldable portion 23 relative to the spindle 100 are hardly changed, so that the central portion of the foldable portion 23 can be adhered to the spindle 100. The connection plates 210 located at both sides of the main shaft 100 and located at the outermost sides of the rotation shaft mechanism 10c may be bonded to the connection plates 210 at positions of the folding screen 20 corresponding to the connection plates 210, because the first non-folding portion 21 and the second non-folding portion 22 of the folding screen 20 correspond to each other. The adaptor plate 220 located between the spindle 100 and the connection plate 210, because the adaptor plate 220 corresponds to a portion of the foldable screen 20 that needs to be deformed in the foldable screen 23, the adaptor plate 220 and the foldable screen 20 may not be connected, and the adaptor plate 220 only contacts the foldable screen 20 to support the foldable screen 23, so that bending of the foldable screen 23 is not limited.

Of course, for an external folding electronic device with a small volume and a small width of the foldable portion 23 of the folding screen 20 (in the width direction of the rotating shaft mechanism 10 c), or in other words, the movement path (bending radius) of the foldable portion 23 of the folding screen 20 of the external folding electronic device is short, it is also possible to support the foldable portion 23 of the folding screen 20 only by the main shaft 100, and no additional adapter plate 220 is provided on both sides of the main shaft 100; for an external folding electronic device with a larger volume and a larger width of the foldable portion 23 of the folding screen 20 (in the width direction of the rotating shaft mechanism 10 c), or in other words, a longer movement path (bending radius) of the foldable portion 23 of the folding screen 20 of the external folding electronic device, two sides of the spindle 100 need to be provided with the adapter plates 220, the number of the adapter plates 220 is not limited, and one or more than two adapter plates 220 can be provided according to actual requirements.

With continued reference to fig. 7, in this embodiment, the damping mechanism 500 connected between the spindle 100 and the connection assembly 200 may include a first damping module 510 and a second damping module 520, where the first damping module 510 is mainly used to generate a damping force in the area where the spindle 100 is located, and the second damping module 520 is mainly used to generate a damping force in the area where the connection plate 210 is located. Through the cooperation of first damping module 510 and second damping module 520, for pivot mechanism 10c provides suitable damping force, guarantee that pivot mechanism 10c has sufficient damping force, guarantee folding screen 20 can flatten smoothly fast, promote user's operation feel, guarantee collapsible electronic equipment 1's result of use.

Under the coupling effect of first damping module 510 and second damping module 520, first damping module 510 can compensate second damping module 520 and lead to the condition that the damping force is not enough because of yielding in long-term use, can provide sufficient damping force, guarantees that pivot mechanism 10c is flattened smoothly, need not external force intervention, guarantees the expansion effect of collapsible electronic equipment 1, promotes user experience. Meanwhile, the damping force of the second damping module 520 can also balance the damping force of the first damping module 510, so as to avoid the influence of the pulling of the spindle 100 on the flatness of the folding screen 20 in the unfolded state, so as to prevent the excessive unfolding phenomenon of the rotating shaft mechanism 10c, ensure the flatness of the folding screen 20 in the unfolded state, and improve the stability of the housing assembly 10 in the unfolded state.

The second damping modules 520 are disposed mainly corresponding to the connection plates 210 because the second damping modules 520 generate damping force in the area where the connection plates 210 are located, so that the second damping modules 520 can be disposed in groups in order to balance the damping force provided by the second damping modules 520, each second damping module 520 includes two second damping modules 520a, and the two second damping modules 520a respectively correspond to the connection plates 210 on two sides of the spindle 100, or the two second damping modules 520a are respectively connected with the connection plates 210 on two sides of the spindle 100.

Further, with continued reference to fig. 7, in this embodiment, the components connected between the spindle 100 and the connection assembly 200 for achieving different functions are provided independently. In other words, the motion assembly 300 is only used to drive the connection assembly 200 to move (rotate and translate) relative to the spindle 100, so as to ensure the accuracy of the motion track of the connection assembly 200; the synchronization structure 400 is only used to achieve synchronous movement of the connection assemblies 200 on both sides of the spindle 100 with respect to the spindle 100; the damping mechanism 500 (the first damping module 510 and the second damping module 520) is only used to provide a damping force to the spindle mechanism 10 c.

The components for realizing different functions are independent and have no connection, so that the components cannot interfere with each other, and if one component fails, the other components cannot be influenced. For example, if the motion assembly 300 fails, only the motion assembly 300 needs to be replaced, without affecting the synchronization structure 400 and the damping mechanism 500. By the arrangement, failure risks can be dispersed to each part, the probability of part failure is reduced, and the reliability of the rotating shaft mechanism 10c is improved; in addition, the parts of the rotating shaft mechanism 10c, which are replaced due to failure, are fewer, so that the maintenance cost of the rotating shaft mechanism 10c can be reduced; in addition, the assembly of the components of the spindle mechanism 10c is easier, which contributes to an improvement in the assembly efficiency of the spindle mechanism 10 c.

Fig. 8 is a front view of the spindle mechanism of fig. 4. Referring to fig. 8, according to the structural design of the spindle mechanism 10c, in this embodiment, the spindle mechanism 10c may be divided into an upper shaft portion 101, a middle shaft portion 102 and a lower shaft portion 103 which are sequentially arranged along the length direction of the spindle mechanism 10c, and it should be understood that the upper shaft portion 101, the middle shaft portion 102 and the lower shaft portion 103 herein only divide the spindle mechanism 10c according to the structural layout of the components on the spindle mechanism 10c, and do not refer to that the spindle mechanism 10c is formed by connecting these three portions.

Referring to fig. 7 and 8, among the components connected to the spindle 100 and the connection assembly 200, at least part of the movement assembly 300 is located at the upper and lower shaft portions 101 and 103 of the rotation shaft mechanism 10c, the synchronization structure 400 is located at the upper and lower shaft portions 101 and 103 of the rotation shaft mechanism 10c, the first damping module 510 in the damping mechanism 500 is located at the upper and lower shaft portions 101 and 103 of the rotation shaft mechanism 10c, and the second damping module 520 is located at the central shaft portion 102 of the rotation shaft mechanism 10 c.

Thus, the upper shaft portion 101 and the lower shaft portion 103 of the rotating shaft mechanism 10c are connected with the moving assembly 300, the moving assembly 300 can stably and firmly connect the spindle 100 with the connecting assembly 200, the integrity and stability of the rotating shaft mechanism 10c can be ensured, and the moving assembly 300 can drive the connecting assemblies 200 on two sides to stably and smoothly move relative to the spindle 100. The upper shaft portion 101 and the lower shaft portion 103 of the rotating shaft mechanism 10c are connected with a synchronization structure 400, so that synchronous guidance can be applied to the upper side and the lower side of the rotating shaft mechanism 10c, and consistency and reliability in movement of the rotating shaft mechanism 10c are ensured.

Through all setting up first damping module 510 at the upper shaft portion 101 of pivot mechanism 10c and lower shaft portion 103, the damping force is exerted respectively at the upside and the downside of pivot mechanism 10c to the first damping module 510 of upper shaft portion 101 and lower shaft portion 103, can provide sufficient damping force for pivot mechanism 10c to can guarantee the equilibrium of the damping force that pivot mechanism 10c wholly received, avoid the damping force that one side of pivot mechanism 10c length direction received big, the damping force that the opposite side received is little circumstances, in order to avoid influencing pivot mechanism 10 c's operation feel and life. And, through setting up second damping module 520 in the axis portion 102 of pivot mechanism 10c, second damping module 520 is located between the first damping module 510 of both sides, can maintain the holistic atress equilibrium of pivot mechanism 10c to better performance second damping module 520 and the coupling effect of first damping module 510 guarantee folding electronic equipment's expansion effect and roughness, promote folding electronic equipment's stability.

In this embodiment, the number of the first damping modules 510 disposed on the upper shaft portion 101 and the lower shaft portion 103 of the rotating shaft mechanism 10c is not limited, and similarly, the number of the second damping modules 520 disposed on the middle shaft portion 102 is not limited, and the design can be performed according to the volume of the rotating shaft mechanism 10c and the required damping force, so that the damping force provided by the first damping modules 510 and the second damping modules 520 can balance the overall stress of the rotating shaft mechanism 10 c.

For example, the upper shaft portion 101 and the lower shaft portion 103 of the spindle mechanism 10c may each be provided with a first damping module 510, and the middle shaft portion 102 may be provided with a second damping module 520, where two second damping modules 520a of the second damping module 520 are respectively connected between the spindle 100 and the connection plates on the corresponding sides.

With continued reference to fig. 7 and 8, the structure of the spindle mechanism 10c for passing through the flexible circuit board (Flexible Printed Circuit, FPC) is also disposed at the central shaft portion 102 of the spindle mechanism 10c, for example, the threading slot 216 formed in the connection board for passing through the flexible circuit board is located in the middle area of the connection board, that is, the threading slot 216 is located at the central shaft portion 102 of the spindle mechanism 10c, there are fewer components disposed at the central shaft portion 102, and there is enough space for disposing the threading slot 216.

The threading grooves 216 on the connection plates at both sides of the spindle 100 may be disposed opposite to each other so that the flexible circuit board can pass through the threading grooves 216 on the connection plates at both sides smoothly, and the reliability of the flexible circuit board can be ensured in the process that the flexible circuit board is repeatedly bent along with the movement of the spindle mechanism 10 c. After passing through the threading slot 216 located at the middle shaft 102, the flexible circuit board extends into the middle of the first and second housings at both sides, so as to be convenient for connection with devices in the first and second housings.

When only one second damping module 520 is provided on the middle shaft section of the spindle mechanism 10c, since the threading grooves 216 on the connection plates on both sides of the spindle 100 are symmetrically arranged, in order to save space, in some examples, two second damping modules 520a may be symmetrically arranged on the same side of the threading grooves 216. Of course, when the space of the rotating shaft mechanism 10c is sufficient, the two second damping modules 520a may be located on two sides of the wire-passing slot 216, so that the overall symmetry of the damping mechanism is good, and the damping force provided for the rotating shaft mechanism 10c is more balanced.

Through all setting up motion subassembly 300, synchronization structure 400 and first damping module 510 at spindle unit 10 c's upper shaft portion 101 and lower shaft portion 103 to set up second damping module 520 and threading groove 216 at spindle unit 10 c's axis portion 102, make spindle unit 10c holistic framework more reasonable, can guarantee spindle unit 10c whole atress balance, make spindle unit 10c steady, smooth and easy motion, thereby, guarantee casing subassembly holistic stability promotes collapsible electronic equipment's reliability.

In the present embodiment, as shown in fig. 8, the upper shaft portion 101 and the lower shaft portion 103 of the rotation shaft mechanism 10c may be designed symmetrically, in other words, the upper shaft portion 101 and the lower shaft portion 103 of the rotation shaft mechanism 10c may be configured symmetrically, and the components of the rotation shaft mechanism 10c where the upper shaft portion 101 and the lower shaft portion 103 are configured are completely symmetrical with respect to the (longitudinal) central axis of the rotation shaft mechanism 10c as a symmetry axis. Like this, pivot mechanism 10c holistic symmetry is better, and the atress is more balanced, helps promoting pivot mechanism 10 c's stability and uniformity, is favorable to promoting pivot mechanism 10 c's stability and smoothness when moving, prolongs pivot mechanism 10 c's life, promotes user experience.

Further, in the upper shaft portion 101 and the lower shaft portion 103 of the rotation shaft mechanism 10c, the movement assembly 300, the synchronization structure 400, and the first damping module 510 are sequentially provided in a direction from an end of the spindle 100 to a center of the spindle 100. In other words, in the upper shaft portion 101 and the lower shaft portion 103 of the rotation shaft mechanism 10c, the moving assembly 300 is disposed near the end of the rotation shaft mechanism 10c, the synchronizing structure 400 is disposed adjacent to the moving assembly 300, the synchronizing structure 400 is located at a side of the end of the moving assembly 300 facing away from the rotation shaft mechanism 10c, the first damping module 510 is located at a side of the synchronizing structure 400 facing away from the moving assembly 300, and the first damping module 510 is disposed relatively near the center of the rotation shaft mechanism 10 c.

Through set up the motion subassembly 300 at the both ends of the length direction of pivot mechanism 10c, the motion subassembly 300 can retrain pivot mechanism 10 c's both ends, guarantees the accuracy nature of the motion track at pivot mechanism 10 c's both ends to guarantee the accuracy nature of pivot mechanism 10c holistic motion track, promote pivot mechanism 10 c's uniformity.

When the rotating shaft mechanism 10c is designed, the synchronous movement of the connecting components 200 at two sides of the main shaft 100 can be ensured theoretically by depending on the moving components 300, however, due to the clearance between the connecting components 200 and the main shaft 100, the accuracy of the synchronous movement of the connecting components 200 at two sides can be affected, and the synchronous movement of the connecting components 200 at two sides of the main shaft 100 is ensured by arranging the synchronous structure 400 at the adjacent side of the moving components 300 and restraining the movement track of the moving components 300 at two sides of the main shaft 100 under the action of the synchronous structure 400.

By disposing the first damping module 510 on the side of the synchronization structure 400 facing away from the motion assembly 300, the first damping module 510 is disposed adjacent to the synchronization structure 400, so that the layout of the upper shaft portion 101 and the lower shaft portion 103 of the spindle mechanism 10c is more compact, so that the space between the upper shaft portion 101 and the lower shaft portion 103 is fully utilized, and the overall layout design of the spindle mechanism 10c is facilitated. In addition, a proper distance can be provided between the first damping module 510 and the second damping module 520 arranged on the middle shaft portion 102 of the rotating shaft mechanism 10c, so that the first damping module 510 and the second damping module 520 can better perform a coupling function, and the damping force applied to the rotating shaft mechanism 10c is more balanced, so that the balance and reliability of the rotating shaft mechanism 10c are improved.

The moving assembly 300 movably coupled between the main shaft 100 and the coupling assembly 200 is described in detail below.

FIG. 9 is an enlarged view of a portion of the spindle mechanism of FIG. 4 at A under a formal viewing angle; FIG. 10 is a cross-sectional view taken at A-A of FIG. 9; FIG. 11 is a partially exploded view of a main swing arm and an adapter plate according to an embodiment of the present application; FIG. 12 is a cross-sectional view at B-B in FIG. 9; fig. 13 is a cross-sectional view corresponding to B-B of fig. 9 when the spindle mechanism is in a folded state.

As shown in fig. 7 and 9, the movement assembly 300 includes a main swing arm 310 and a sub swing arm 320 located at the upper shaft portion 101 and the lower shaft portion 103, the main swing arm 310 is a main transmission part between the main shaft 100 and the connection assembly 200, and the sub swing arm 320 cooperates with the main swing arm 310 to realize a transmission effect between the main shaft 100 and the connection plate 210, so as to enhance the connection strength between the connection plate 210 and the main shaft 100, and make the connection plate 210 stably move relative to the main shaft 100.

By arranging the main swing arm 310 and the auxiliary swing arm 320 close to the two ends of the rotating shaft mechanism 10c, and arranging the main swing arm 310 and the auxiliary swing arm 320 adjacently, the main swing arm 310 and the auxiliary swing arm 320 guide the movement of the rotating shaft mechanism 10c together, and the main swing arm 310 and the auxiliary swing arm 320 restrict the movement track of the two ends of the rotating shaft mechanism 10c together. Thus, both the two functions act on the two ends of the rotating shaft mechanism 10c, the constraint effect on the motion trail is good, the acting range is large, and the stability and the accuracy of the motion of the rotating shaft mechanism 10c can be ensured.

Wherein, as a main transmission component between the main shaft 100 and the connection assembly 200, the rotation and translation (far away from or near to) of the connection assembly 200 relative to the main shaft 100 can be realized through the transmission action of the main swing arm 310, so as to realize the switching of the housing assembly 10 between the unfolded state and the folded state.

Taking an external folding electronic device as an example, in the process of converting the foldable electronic device 1 from an unfolding state to a folding state, the main swing arm 310 drives the connecting plate 210 to rotate relative to the main shaft 100 to a side where the connecting plate 210 is away from the folding screen 20, and the connecting plates 210 on two sides of the main shaft 100 are mutually close to be oppositely arranged; in the process of converting the foldable electronic device 1 from the folded state to the unfolded state, the main swing arm 310 drives the connecting plate 210 to rotate towards the side where the folding screen 20 is located relative to the main shaft 100, the connecting plates 210 at two sides of the main shaft 100 are mutually far away to be arranged in a coplanar manner, meanwhile, the main swing arm 310 drives the connecting plate 210 to move towards the direction far away from the main shaft 100, and the gap between the connecting plate 210 and the main shaft 100 is increased, so that an extension space required for converting the bendable part 23 of the folding screen 20 from the bent state to the flattened state is provided, and smooth flattening of the bendable part 23 of the folding screen 20 is ensured.

In addition, the adaptor plates 220 positioned at two sides of the main shaft 100 can be connected with the main swing arms 310, and the adaptor plates 220 are fixed and driven to move by the main swing arms 310, so that the requirement that the posture of the adaptor plates 220 is changed along with the form change of the bendable parts 23 of the folding screen 20 is met, and the bendable parts 23 of the folding screen 20 can be stably supported by the adaptor plates 220 under any posture.

As a transmission member between the connection plate 210 and the spindle 100, similar to the main swing arm 310, the auxiliary swing arm 320 may drive the connection plate 210 to rotate relative to the spindle 100, and the auxiliary swing arm 320 may realize that the connection plate 210 is far away from or near the spindle 100, so as to change a gap between the connection plate 210 and the spindle 100, which will not be described herein.

As to the relative positions of the primary swing arm 310 and the secondary swing arm 320, in some embodiments, the primary swing arm 310 may be disposed proximate to the end of the spindle mechanism 10c, with the secondary swing arm 320 being located on the side of the primary swing arm 310 that faces away from the end of the spindle mechanism 10 c. Through setting up the main swing arm 310 that is main transmission part at the both ends of pivot mechanism 10c, main swing arm 310 leads the motion at pivot mechanism 10c both ends, retrains the motion track at pivot mechanism 10c both ends, and then, motion module 300 can be better retrains the whole motion track of pivot mechanism 10c, can promote the accuracy of pivot mechanism 10c motion.

In other embodiments, the auxiliary swing arm 320 may be disposed near the end of the rotation shaft mechanism 10c, and the main swing arm 310 is located on the side of the end of the auxiliary swing arm 320 facing away from the rotation shaft mechanism 10 c. Because the main swing arm 310 and the auxiliary swing arm 320 are closely adjacent, which is equivalent to the end of the main swing arm 310 very close to the rotating shaft mechanism 10c, the main swing arm 310 still can play the role of effective motion guiding and track constraint, and the stability and the accuracy of the motion of the rotating shaft mechanism 10c can be ensured.

Specifically, referring to fig. 10, in the present embodiment, an end of the main swing arm 310 close to the spindle 100 may be slidably and rotatably connected to the spindle 100, and an end of the main swing arm 310 close to the connection plate 210 may also be slidably and rotatably connected to the connection plate 210. In other words, the two ends of the main swing arm 310 can rotate around the main shaft 100 and the connecting plate 210, respectively, so that the connecting plate 210 can rotate relative to the main shaft 100; moreover, the two ends of the main swing arm 310 can slide relative to the main shaft 100 and the connecting plate 210 respectively, so that the connecting plate 210 can be far away from or close to the main shaft 100, the gap between the connecting plate 210 and the main shaft 100 can be changed, and a deformation space required for converting the bendable portion 23 of the folding screen 20 between the flattened state and the bent state is provided.

In addition, in the case that the adapter plate 220 is fixed by means of the main swing arm 310, by enabling both ends of the main swing arm 310 to be respectively slidably and rotatably connected with the main shaft 100 and the connection plate 210, the degree of freedom of movement of the main swing arm 310 is large, the posture of the main swing arm 310 is not limited by the rotation angle of the connection plate 210, and the main swing arm 310 can cooperate with the posture of the adapter plate 220 to maintain the adapter plate 220 in a posture capable of stably supporting the bendable portion 23 of the folding screen 20.

As an embodiment, the main swing arm 310 may include a first arc sliding portion 311 and a second arc sliding portion 312, where the first arc sliding portion 311 is disposed corresponding to the main shaft 100, and the second arc sliding portion 312 is disposed corresponding to the connecting plate 210, and correspondingly, the main shaft 100 may be provided with the first arc groove 104, and the connecting plate 210 may be provided with the second arc groove 211. The first arc sliding part 311 of the main swing arm 310 extends into the first arc groove 104 on the main shaft 100, the first arc sliding part 311 slides along the first arc groove 104, the second arc sliding part 312 of the main swing arm 310 extends into the second arc groove 211 on the connecting plate 210, and the second arc sliding part 312 slides along the second arc groove 211, so that the connecting plate 210 can rotate around the main shaft 100, and meanwhile, the connecting plate 210 can move in a direction away from the main shaft 100 or a direction close to the main shaft 100.

As for the connection between the main swing arm 310 and the adapter plate 220, referring to fig. 11, in some embodiments, a positioning post 313 may extend from a surface of the main swing arm 310 facing the adapter plate 220, a positioning hole 221 may be formed on the adapter plate 220, and the positioning post 313 extends into the positioning hole 221, so as to position the main swing arm 310 and the adapter plate 220. For example, the outer wall surface of the positioning post 313 and the inner wall surface of the positioning hole 221 may be welded or adhesively connected to fixedly connect the main swing arm 310 and the adapter plate 220. The number and shape of the positioning posts 313 (the positioning holes 221) may be set according to the shape and volume of the main swing arm 310, which is not limited in this embodiment.

Referring to fig. 12 and 13, in the present embodiment, the end of the auxiliary swing arm 320 facing the spindle 100 may be slidably and rotatably connected to the spindle 100, and the end of the auxiliary swing arm 320 facing the connection plate 210 may be slidably connected to the connection plate 210, so that the auxiliary swing arm 320 has a sufficient degree of freedom between the connection plate 210 and the spindle 100, and can meet the requirements of rotation and translation of the connection plate 210 relative to the spindle 100. In addition, the auxiliary swing arm 320 and the adapter plate 220 can be connected without limiting the movement of the adapter plate 220, and the flexibility of the movement of the auxiliary swing arm 320 can be ensured.

As an embodiment, the main shaft 100 may further be provided with a third arc-shaped slot 105, the connecting plate 210 may be provided with a first chute 212, and the auxiliary swing arm 320 may include a third arc-shaped sliding portion 321 and a first sliding portion 322. The third arc-shaped sliding part 321 of the auxiliary swing arm 320 is arranged corresponding to the main shaft 100 and extends into the third arc-shaped groove 105, and the rotation of the connecting plate 210 around the main shaft 100 can be realized in the process that the third arc-shaped sliding part 321 slides in the third arc-shaped groove 105; the first sliding plate portion 322 of the auxiliary swing arm 320 is disposed corresponding to the connecting plate 210 and extends into the first sliding groove 212, and the first sliding plate portion 322 slides along the first sliding groove 212, so as to realize the translation of the connecting plate 210 away from or close to the main shaft 100.

Referring to fig. 12, when the spindle mechanism 10c is in the unfolded state, the third arc-shaped sliding portion 321 of the auxiliary swing arm 320 extends into the third arc-shaped slot 105 of the spindle 100 to the maximum extent, the first sliding portion 322 of the auxiliary swing arm 320 extends into the first sliding slot 212 on the connecting plate 210 to the minimum extent, and the connecting plates 210 on both sides of the spindle 100 are in a state of being far away from each other, so as to provide a sufficient distance between the connecting plates 210 on both sides, so that the bendable portion 23 of the folding screen 20 maintains the flattened state. Referring to fig. 13, when the spindle mechanism 10c is in the folded state, the third arc-shaped sliding portion 321 of the auxiliary swing arm 320 extends into the third arc-shaped slot 105 of the spindle 100 to a minimum extent, the first sliding portion 322 of the auxiliary swing arm 320 extends into the first sliding slot 212 on the connecting plate 210 to a maximum extent, and the connecting plates 210 on both sides of the spindle 100 are in a state of being close to each other, so as to provide a bending space for the bendable portion 23 of the folding screen 20, so that the bendable portion 23 maintains the bent state.

On the basis that the auxiliary swing arm 320 can cooperate with the main swing arm 310 to jointly realize rotation and translation of the connection plate 210 relative to the main shaft 100, in other embodiments, one end of the auxiliary swing arm 320 may be rotationally connected with the main shaft 100, the other end of the auxiliary swing arm 320 may be slidingly connected with the connection plate 210, one end of the auxiliary swing arm 320 may be slidingly connected with the main shaft 100, the other end of the auxiliary swing arm 320 may be rotationally connected with the connection plate 210, one end of the auxiliary swing arm 320 may be slidingly and rotationally connected with the main shaft 100, the other end of the auxiliary swing arm 320 may be rotationally connected with the connection plate 210, or similar to the main swing arm 310, one end of the auxiliary swing arm 320 may be slidingly and rotationally connected with the main shaft 100, the other end of the auxiliary swing arm 320 may be slidingly and rotationally connected with the connection plate 210.

On the basis of the main swing arm 310 and the auxiliary swing arm 320, in this embodiment, the motion assembly 300 may further include an auxiliary swing arm 330 (see fig. 7), one end of the auxiliary swing arm 330 is movably connected to the main shaft, and the other end of the auxiliary swing arm 330 is connected to the connecting plate. The auxiliary swing arm 330 is also used to realize a transmission function between the spindle 100 and the connection plate 210, so that the connection between the connection plate 210 and the spindle 100 is more reliable, and the movement of the connection plate 210 relative to the spindle 100 is more stable and smooth.

The auxiliary swing arm 330 may be disposed at the central shaft 102 of the rotating shaft 10c, the auxiliary swing arm 330 is far from the main swing arm 310 and the auxiliary swing arm 320 disposed at two ends of the rotating shaft 10c, and the auxiliary swing arm 330 may perform motion guiding and track constraint on the central shaft 102 of the rotating shaft 10 c. In this way, the auxiliary swing arm 330 cooperates with the main swing arm 310 and the auxiliary swing arm 320 to perform motion guidance and track restriction on each region of the rotating shaft mechanism 10c in the length direction, so that the balance of the motion of the rotating shaft mechanism 10c is better and the precision is higher.

In addition, the space of the middle shaft portion 102 of the rotating shaft mechanism 10c is large, which is beneficial to the installation of the auxiliary swing arm 330. The auxiliary swing arm 330 is added on the middle shaft part of the rotating shaft mechanism 10c, so that the layout of the rotating shaft mechanism 10c is more compact, the space utilization rate of the rotating shaft mechanism 10c is higher, and the arrangement of the components of the rotating shaft mechanism 10c is more balanced.

The auxiliary swing arm 330 can be arranged between the first damping module 510 and the second damping module 520, the auxiliary swing arm 330 is used for spacing the first damping module 510 and the second damping module 520, and because the auxiliary swing arm 330 is movably connected between the main shaft 100 and the connecting plate 210, certain assistance can be provided between the first damping module 510 and the second damping module 520, the damping action of the first damping module 510 and the second damping module 520 can be weakened, and the smooth movement of the rotating shaft mechanism 10c is ensured.

For example, the auxiliary swing arms 330 may be disposed at both sides of the central shaft portion, and the auxiliary swing arms 330 at both sides are respectively adjacent to the upper shaft portion and the lower shaft portion. Thus, the distance between the auxiliary swing arms 330 on two sides and the main swing arms 310 and the auxiliary swing arms 320 on the corresponding sides is larger, the distance between the auxiliary swing arms 330 on two sides is also larger, the auxiliary swing arms 330 are arranged between the main swing arms 310 and the auxiliary swing arms 320 on two ends of the rotating shaft mechanism 10c at substantially uniform intervals, the layout of the moving assembly 300 is more reasonable, and the balance of the movement of the rotating shaft mechanism 10c is good and smoother.

As for the structural design of the auxiliary swing arm 330, as an example, one end of the auxiliary swing arm 330 may be slidably and rotatably connected with the main shaft 100, and the other end of the auxiliary swing arm 330 may be slidably and rotatably connected with the connection plate 210. Both ends of the auxiliary swing arm 330 can rotate around the main shaft 100 and the connecting plate 210 respectively, so that the rotation of the connecting plate 210 relative to the main shaft 100 can be realized; the two ends of the auxiliary swing arm 330 can also slide relative to the main shaft 100 and the connecting plate 210 respectively, so that the connecting plate 210 can be far away from or close to the main shaft 100, the size of a gap between the connecting plate 210 and the main shaft 100 can be changed, and a deformation space required by converting the bendable part 23 of the folding screen 20 between a flattened state and a bent state is provided.

For example, the auxiliary swing arm 330 may be similar to the main swing arm 310 in structure, the auxiliary swing arm 330 has a better track restraining effect on the middle shaft section of the rotating shaft mechanism 10c, and the auxiliary swing arm 330 has a large degree of freedom, and the adapter plate 220 may be connected to the auxiliary swing arm 330. In this way, there are more connection portions between the adapter plate 220 and the motion assembly 300, and the stability and reliability of the adapter plate 220 are better, which will not be described herein.

The synchronizing structure 400 and the damping mechanism 500 connected between the main shaft 100 and the connection unit 200 are described in detail below.

Fig. 14 is a partial enlarged view at B in fig. 4. Referring to fig. 14, a synchronization structure 400 is shown between the spindle 100 and the connection plates 210 on both sides, where the synchronization structure 400 is used to make the connection plates 210 on both sides move synchronously relative to the spindle 100, so that the connection plates 210 on both sides drive the first housing 10a and the second housing 10b to move synchronously, ensuring the accuracy of the movement of the housing assembly 10, and thus ensuring smooth and accurate switching of the foldable electronic device 1 between the unfolded state and the folded state.

The synchronization structure 400 may include two synchronization swing arms 410, wherein first ends of the two synchronization swing arms 410 are rotatably connected to the spindle 100, and the first ends of the two synchronization swing arms 410 are respectively located at two sides of the spindle 100 in the width direction, for example, the first ends of the two synchronization swing arms 410 may be disposed side by side along the width direction of the spindle 100; the second ends of the two synchronization swing arms 410 respectively extend to the connecting plates 210 at two sides of the main shaft 100, and the connecting plates 210 may be provided with second sliding grooves 213, for example, the second sliding grooves 213 on the connecting plates 210 at two sides of the main shaft 100 are oppositely arranged, and the second ends of the two synchronization swing arms 410 respectively slide along the corresponding second sliding grooves 213.

In the process of switching between the unfolded state and the folded state, the first ends of the two synchronous swing arms 410 synchronously and reversely rotate, so that the second ends of the two synchronous swing arms 410 synchronously and reversely rotate, the second ends of the two synchronous swing arms 410 slide along the second sliding grooves 213 on the connecting plates 210 on the two sides to guide the connecting plates 210 on the two sides, and accordingly the connecting plates 210 on the two sides drive the first shell 10a and the second shell 10b to synchronously act.

Referring to fig. 14, as an embodiment, the synchronizing structure 400 may be a gear transmission structure, first ends of the two synchronizing swing arms 410 may be provided with synchronizing gears 411, the synchronizing gears 411 of the two synchronizing swing arms 410 may be mounted on the main shaft 100 through rotating shafts (see fig. 17, the rotating shafts may be inserted into corresponding mounting holes 107 on the main shaft 100), and the two synchronizing gears 411 are engaged with each other. The two synchronous gears 411 have the same size, the two synchronous gears 411 have the same tooth number and the same tooth space, and power is transmitted between the two synchronous gears 411, so that the synchronous and reverse rotation of the two synchronous gears 411 is realized, and the second end of the synchronous swing arm 410 is driven to synchronously and reversely rotate.

Of course, other transmission modes besides gear transmission can be adopted for the synchronization structure 400, for example, a synchronization transmission member is arranged between the first ends of the two synchronization swing arms 410, and the first ends of the two synchronization swing arms 410 synchronously and reversely rotate through the transmission action of the synchronization transmission member. For example, a guide post may be disposed on the synchronous transmission member, and the first end of the synchronous swing arm 410 may be a cylindrical (columnar) structure with a spiral hole (spiral groove), and the first ends of the two synchronous swing arms 410 are driven to rotate synchronously and reversely by sliding along the spiral hole (spiral groove) through the guide post.

Fig. 15 is a partial enlarged view at C in fig. 4. Referring to fig. 15, the first damping module 510 located at the upper and lower shaft portions of the rotation shaft mechanism 10c may include two support shafts 511 and a damping structure. The axial direction of the support shaft 511 may be set along the length direction of the spindle 100, and two support shafts 511 may be set at intervals along the width direction of the spindle 100, for example, two support shafts 511 may be set side by side along the width direction of the spindle 100, and the support shafts 511 are inserted into corresponding mounting holes 107 (see fig. 17) on the spindle 100. The damping structure is sleeved on the two support shafts 511, and generates a variable damping force as the rotating shaft mechanism 10c is switched between the unfolded state and the folded state, so as to provide the damping force required by the foldable electronic device 1 in the unfolded state, the folded state and the switching between the two states.

As an embodiment, the damping structure may include two driving members 512 and an elastic component 513, where the two driving members 512 are respectively sleeved on the two supporting shafts 511, the two driving members 512 can synchronously and reversely rotate around the corresponding supporting shafts 511, the elastic component 513 is sleeved on the two supporting shafts 511, and the elastic component 513 is abutted to the two driving members 512. With the movement of the rotating shaft mechanism 10c, or with the switching of the rotating shaft mechanism 10c between the unfolded state and the folded state, the two driving members 512 respectively rotate synchronously and reversely around the corresponding supporting shafts 511, and the two driving members 512 press the elastic assembly 513 during the rotation process, so that the compression amount of the elastic assembly 513 is changed, and the elastic assembly 513 generates a variable damping force.

Referring to fig. 15, the driving member 512 may include a rotation sleeve 5121 and a rotation plate 5122, the rotation sleeve 5121 is connected to one end of the rotation plate 5122, the rotation sleeve 5121 may be integrally formed at an end of the rotation plate 5122, the rotation sleeve 5121 is sleeved on the corresponding support shaft 511, and the rotation plate 5122 may extend to the connection plate 210 at the corresponding side and be slidably connected to the connection plate 210. For example, the connection plate 210 may be provided with a third sliding groove 214, and during the rotation and translation of the connection plate 210 relative to the spindle 100, the rotation plate 5122 slides along the third sliding groove 214 to drive the rotation sleeve 5121 to rotate around the support shaft 511.

It should be noted that, in this embodiment, taking the sliding connection of the driving member 512 and the connecting plate 210 as an example, the driving member 512 is driven to move by the movement of the connecting plate 210 relative to the spindle 100, so as to realize the rotation of the rotating sleeve 5121 of the driving member 512 around the supporting shaft 511. In other examples, only the support shaft 511 may be sleeved with the rotating sleeve 5121, and the rotating sleeve 5121 may be matched with other structures on the main shaft 100 to realize rotation of the rotating sleeve 5121, in other words, the driving member 512 may only include the rotating sleeve 5121, and not include the rotating plate 5122 slidingly connected with the connecting plate 210; for example, the rotating sleeve 5121 may be connected to the synchronizing structure 400, or the rotating sleeve 5121 is integrally formed on the synchronizing structure 400, and the rotating sleeve 5121 is driven to rotate synchronously during the rotation of the synchronizing structure 400.

With continued reference to fig. 15, the elastic assembly 513 includes a stop collar 5131 and two elastic members 5132, where the two elastic members 5132 are respectively sleeved on the two support shafts 511, the elastic members 5132 are, for example, springs, the stop collar 5131 is also sleeved on the two support shafts 511, the two support shafts 511 can simultaneously pass through the stop collar 5131, and the stop collar 5131 is connected to one end of the elastic member 5132 facing the rotation collar 5121. In the rotation process of the rotating sleeve 5121, the rotating sleeve is abutted against different parts of the limiting sleeve 5131, the limiting sleeve 5131 is driven to move along the supporting shaft 511, the limiting sleeve 5131 extrudes the elastic element 5132, the compression amount of the elastic element 5132 is changed, and the elastic element 5132 generates elastic deformation to provide damping force.

The elastic assembly 513 shown in the drawings comprises two limiting sleeves 5131, the two limiting sleeves 5131 are respectively connected to two ends of the elastic member 5132, correspondingly, the driving member 512 can comprise two rotating sleeves 5121, the two rotating sleeves 5121 are respectively positioned at two ends of the elastic assembly 513, the two rotating sleeves 5121 are respectively abutted with the corresponding limiting sleeves 5131, and the corresponding limiting sleeves 5131 are synchronously pushed by the rotating sleeves 5121 at two sides, and meanwhile, the two ends of the elastic member 5132 are extruded to change the compression amount of the elastic member 5132. At this time, the maximum compression amount of the elastic member 5132 is relatively large, and the damping force provided by the elastic member 5132 is relatively large. The driving member 512 may be provided with a connecting plate 5123, and the two rotating sleeves 5121 are connected to the connecting plate 5123, and the two rotating sleeves 5121 are integrally formed at two ends of the connecting plate 5123, for example, so as to realize synchronous rotation of the two rotating sleeves 5121.

In other examples, the elastic component 513 may also include only one stop collar 5131, and correspondingly, the driving member 512 may include only one rotating collar 5121, where the stop collar 5131 is connected to an end of the elastic member 5132 facing the rotating collar 5121, and the other end of the elastic member 5132 may be fixed on the spindle 100, and the compression amount of the elastic member 5132 is changed by pushing the stop collar 5131 against an end of the elastic member 5132 by virtue of the rotating collar 5121 of the driving member 512. At this time, the maximum compression amount of the elastic member 5132 is relatively small, and the damping force provided by the elastic member 5132 is relatively small.

As for driving the stop collar 5131 to move along the support shaft 511 by rotating the rotation collar 5121 of the driving member 512, referring to fig. 15, in some embodiments, an end of the rotation collar 5121 facing the stop collar 5131 may have a protrusion 51211, an end of the stop collar 5131 facing the rotation collar 5121 may have a recess 51311, and the protrusion 51211 and the recess 51311 may be engaged with each other, and a width of the recess 51311 may be slightly larger than a width of the protrusion 51211. During the rotation of the rotation sleeve 5121, the protrusion 51211 moves to abut against different portions of the stop sleeve 5131, and the protrusion 51211 moves along the end surface of the stop sleeve 5131 to slide into the recess 513117 or slide out of the recess 51311, so as to push the stop sleeve 5131 to move, press the elastic member 5132 to change the compression amount thereof, and make the elastic member 5132 provide a variable damping force.

Of course, a concave portion 51311 may be disposed at one end of the rotation sleeve 5121 facing the stop collar 5131, and a convex portion 51211 may be disposed at one end of the stop collar 5131 facing the rotation sleeve 5121, and in the rotation process of the rotation sleeve 5121, the concave portion 51311 moves to a convex portion 51211 corresponding to the stop collar 5131 and extends into the convex portion 51211, or the concave portion 51311 moves to a position corresponding to another position of the stop collar 5131, so as to push the stop collar 5131 to move, and the stop collar 5131 extrudes the elastic member 5132 to change the compression amount thereof, which will not be repeated.

Taking the example that the protrusion 51211 is provided on the rotation sleeve 5121 of the driving member 512 and the recess 51311 is provided on the stop collar 5131 of the elastic component 513, when the rotation shaft mechanism 10c is in the folded state, the protrusion 51211 of the rotation sleeve 5121 can be abutted against other areas except the recess 51311 on the stop collar 5131, the compression amount of the elastic member 5132 is maximum, and the damping force of the rotation shaft mechanism 10c is large. As the rotation shaft mechanism 10c gradually shifts to the unfolded state, the protrusion 51211 on the rotation sleeve 5121 gradually moves into the recess 51311 of the limit sleeve 5131, the compression amount of the elastic member 5132 gradually decreases, and the damping force is released, so that the rotation shaft mechanism 10c is facilitated to be unfolded quickly. When the rotation shaft mechanism 10c is unfolded to the flattened state, the rotation sleeve 5121 is not yet fully abutted to the bottommost end of the recess 51311 of the limit sleeve 5131, and a space for releasing the damping force is still left, and the rotation shaft mechanism 10c has a tendency to continue unfolding.

Fig. 16 is a partial enlarged view at D in fig. 4. Referring to fig. 16, the second damping module 520a includes a damping swing arm 521 and a damping assembly 522, where the damping swing arm 521 is connected between the main shaft 100 and the connection plate 210, typically, the damping swing arm 521 is rotatably connected to the main shaft 100 toward one end of the main shaft 100, the damping swing arm 521 slides along the connection plate 210 toward one end of the connection plate 210, the damping assembly 522 is located in the area of the connection plate 210, and the damping assembly 522 abuts against the damping swing arm 521, and as the damping swing arm 521 slides along the connection plate 210, the damping swing arm 521 presses the damping assembly 522 to make the damping assembly 522 generate a damping force in the area of the connection plate 210, so as to provide another part of the damping force required by the rotation shaft mechanism 10 c.

It can be understood that, for one second damping module 520, the one second damping module 520 includes two second damping modules 520a, the first ends of the damping swing arms 521 of the two second damping modules 520a are rotationally connected to the main shaft 100, the second ends of the damping swing arms 521 of the two second damping modules 520a slide along the connection plates 210 on two sides of the main shaft 100 respectively, the damping assemblies 522 of the two second damping modules 520a are located on the connection plates 210 on two sides of the main shaft 100 respectively, and the two damping assemblies 522 are abutted against the damping swing arms 521 on the corresponding sides respectively. During the movement of the spindle mechanism 10c, the damping swing arms 521 at both sides of the spindle 100 synchronously and reversely rotate, so as to drive the damping assemblies 522 at both sides of the spindle 100 to synchronously deform, thereby providing the same damping force at both sides of the spindle 100 and ensuring the stress balance of the spindle mechanism 10 c.

As for the connection between the damping swing arm 521 and the main shaft 100 and the connection board 210, for example, a fourth arc-shaped slot 106 (see fig. 17) may be further formed on the main shaft 100, a fourth sliding slot 215 may be further formed on the connection board 210, the damping swing arm 521 may include a fourth arc-shaped sliding portion 5211 and a second sliding plate portion 5212, and the fourth arc-shaped sliding portion 5211 and the second sliding plate portion 5212 may be an integrally formed structure. The fourth arc-shaped sliding portion 5211 of the damping swing arm 521 extends into the fourth arc-shaped slot 106 of the main shaft 100 and slides along the fourth arc-shaped slot 106 to realize rotation of the damping swing arm 521 around the main shaft 100, the second sliding plate portion 5212 of the damping swing arm 521 is located in the fourth sliding slot 215 on the connecting plate 210, and the second sliding plate portion 5212 slides along the fourth sliding slot 215.

The damping assembly 522 located in the area of the connection plate 210 may abut against the second slide plate portion 5212 of the damping swing arm 521, and as the connection plate 210 rotates relative to the spindle 100, the second slide plate portion 5212 of the damping swing arm 521 slides along the fourth slide slot 215 of the connection plate 210, and the damping swing arm 521 presses the damping assembly 522, and may change the compression amount of the damping assembly 522, the damping assembly 522 elastically deforms to provide a damping force for the spindle.

With continued reference to fig. 16, as an embodiment, a mounting groove 52121 may be formed on the second slide plate portion 5212 of the damping swing arm 521, and an avoidance opening (not shown in the drawing) may be formed at an end of the second slide plate portion 5212 facing the main shaft 100, the damping assembly 522 is clamped in the mounting groove 52121, a side of the damping assembly 522 facing away from the main shaft 100 abuts against an inner side wall of the mounting groove 52121, and a side of the damping assembly 522 facing toward the main shaft 100 may abut against a side wall of the main shaft 100 through the avoidance opening of the damping swing arm 521. As the connection plate 210 moves relative to the spindle 100, the damping swing arm 521 rotates around the spindle 100, the damping assembly 522 slides along the sidewall of the spindle 100 against one end of the spindle 100, and the sidewall of the spindle 100 presses the damping assembly 522, so that the damping assembly 522 elastically deforms in the width direction of the spindle 100, so as to change the damping force provided by the damping assembly 522.

The damping component 522 may include a support component 5221 and an elastic component 5222, where the support component 5221 is disposed near the spindle 100, the support component 5221 passes through the avoidance opening of the damping swing arm 521 toward one end of the spindle 100 to be abutted against the side wall of the spindle 100, the elastic component 5222 may extend along the width direction of the spindle 100, one end of the elastic component 5222 abuts against the support component 5221, and the other end of the elastic component 5222 abuts against the inner side wall of the mounting groove 52121 on one side facing away from the spindle 100. As the damping swing arm 521 rotates around the main shaft 100, the bracket assembly 5221 slides along the sidewall of the main shaft 100, and both ends of the elastic member 5222 are pressed by the bracket assembly 5221 and the inner sidewall of the mounting groove 52121, and the elastic member 5222 is elastically deformed.

For example, the damping assembly 522 may include only one elastic member 5222, or the damping assembly 522 may include two or more elastic members 5222, each elastic member 5222 being disposed at intervals, for example, in the width direction of the connection plate 210, depending on the amount of damping force required by the spindle mechanism 10 c.

The support assembly 5221 may include a support body 52211 and a roller 52212, wherein a fixed shaft is disposed on one side of the support body 52211 facing the spindle 100, and extends along a length direction of the spindle 100, the roller 52212 is sleeved on the fixed shaft, the roller 52212 can rotate around the fixed shaft, an outer wall surface of the roller 52212 abuts against a sidewall of the spindle 100, and the elastic member 5222 can abut against between the support body 52211 and an inner sidewall of one side of the mounting groove 52121 facing away from the spindle 100. In this way, in the process that the bracket assembly 5221 slides along the side wall of the spindle 100, the roller 52212 can roll on the side wall of the spindle 100, so that the friction between the bracket assembly 5221 and the spindle 100 can be reduced, and the connecting plate 210 can move more smoothly.

In other embodiments, the damping assembly 522 may also be mounted on the connection plate 210, where the position of the damping assembly 522 relative to the connection plate 210 is fixed, for example, the damping assembly 522 may be mounted on one side of the second slide plate portion 5212 of the damping swing arm 521, the damping assembly 522 abuts against a side wall on a corresponding side of the second slide plate portion 5212, or both sides of the second slide plate portion 5212 of the damping swing arm 521 are mounted with the damping assemblies 522, and the damping assemblies 522 on both sides abut against both side walls of the second slide plate portion 5212, respectively. As the second slide plate portion 5212 of the damping swing arm 521 slides along the fourth slide slot 215 of the connection plate 210, different portions of the second slide plate portion 5212 press the damping assembly 522, so that the compression amount of the damping assembly 522 can be changed, and the damping assembly 522 is elastically deformed along the length direction of the connection plate 210.

The spindle 100 of the spindle mechanism 10c will be described in detail below.

FIG. 17 is a schematic view of the spindle mechanism of FIG. 4; fig. 18 is an exploded view of the spindle of fig. 17. As shown in fig. 17 and 18, in order to facilitate the installation of the aforementioned moving assembly 300, the synchronization structure 400, the damping mechanism 500, and other components on the main shaft 100, the main shaft 100 may be composed of the support beam 110 and the cover plate 120 in this embodiment. The support beam 110 is a main body support structure of the main shaft 100, and the support beam 110 may extend to both ends of the main shaft 100 in the length direction of the main shaft 100, in other words, the support beam 110 provides a desired length of the main shaft 100. The number of the cover plates 120 may be plural, each cover plate 120 is sequentially disposed along the length direction of the support beam 110, the cover plates 120 are connected to one side surface of the support beam 110 in the thickness direction, and the support beam 110 and the cover plates 120 together enclose a groove, a hole or the like structure as a mounting base for the components of the moving assembly 300, the synchronization structure 400, the damping mechanism 500 or the like so as to accommodate and position the components.

Since the thickness of the main shaft 100 is small, and many components such as the moving assembly 300, the synchronizing structure 400, and the damping mechanism 500 are required to be mounted on the main shaft 100, structures such as grooves, holes, etc. for accommodating and positioning the components are required to be processed on the main shaft 100, and the structures such as grooves, holes, etc. are required to pass through the middle region in the thickness direction of the main shaft 100. By arranging the cover plate 120 and the supporting beam 110 to form the main shaft 100 together, part of structures such as grooves and holes can be processed on the cover plate 120 and the supporting beam 110 respectively, and after the cover plate 120 and the supporting beam 110 are assembled, the complete structures such as the grooves and the holes are formed by enclosing together, so that the processing of the structures such as the grooves and the holes is facilitated, and the assembly of the moving assembly 300, the synchronous structure 400, the damping mechanism 500 and other components on the main shaft 100 is also facilitated.

For example, the first arc-shaped slot 104 for accommodating the main swing arm 310, the third arc-shaped slot 105 for accommodating the sub swing arm 320, the fourth arc-shaped slot 106 for accommodating the damping swing arm 521 of the second damping module 520a on the main shaft 100, the mounting hole 107 for mounting the rotation shaft of the synchronization swing arm 410 on the main shaft 100, and the mounting hole 107 for mounting the support shaft 511 of the first damping module 510 on the main shaft 100 may be enclosed by the cover plate 120 and the support beam 110.

When the components such as the motion assembly 300, the synchronization structure 400, the damping mechanism 500, and the like are mounted on the spindle 100, the components may be first positioned on the support beam 110, the cover plate 120 is fastened to the support beam 110, the cover plate 120 is fixedly connected to the support beam 110 after the cover plate 120 is positioned accurately, and the components are positioned and the motion of the components is guided by the structures such as grooves, holes, and the like formed by the cover plate 120 and the support beam 110. Illustratively, the cover plate 120 and the supporting beam 110 may be connected by screws, and after the cover plate 120 is positioned on the supporting beam 110, the screws are tightened to firmly lock the cover plate 120 on the supporting beam 110, so as to ensure stability and reliability of the components mounted on the spindle 100.

For convenience of description, in this embodiment, the two side surfaces of the supporting beam 110 in the thickness direction are respectively defined as a first surface and a second surface, the first surface of the supporting beam 110 is the front surface thereof, the bendable portion 23 of the folding screen 20 may be supported on the first surface of the supporting beam 110, the cover plate 120 may be connected to the second surface of the supporting beam 110, so as to avoid affecting the flatness of the front surface of the supporting beam 110, ensure that the front surface of the supporting beam 110 supports the folding screen 20 stably, and the components such as the moving assembly 300, the synchronization structure 400, the damping mechanism 500, and the like, which are co-located by the cover plate 120 and the supporting beam 110, are close to the back surface of the main shaft 100, so as to facilitate the installation and movement of the components.

As for the position of each cover plate 120 in the length direction of the support beam 110, the present embodiment is not particularly limited. Of the cover plates 120, a part of the cover plates 120 may be disposed on the support beam 110 in a region where the movement assembly 300 is required to be disposed, and the cover plates 120 may enclose grooves for accommodating the movement assembly 300 together with the support beam 110, and the grooves may guide the movement of the movement assembly 300; the partial cover plates 120 may be disposed corresponding to the synchronizing structure 400, the damping mechanism 500, etc., and these cover plates 120 may enclose holes for supporting and positioning these components together with the support beam 110, and the space between adjacent cover plates 120 may be used for limiting these components.

Wherein, the end caps 108 may be disposed at two ends of the support beam 110 in the length direction, and the end caps 108 may be used for limiting the folding screen 20 to ensure the position accuracy of the assembly of the folding screen 20 and the spindle mechanism 10c, and similarly, the end caps 108 may also limit the first housing 10a and the second housing 10b to ensure the assembly accuracy of the housing assembly 10.

In addition, when the length of the support beam 110 is long, the support beam 110 may be divided into two or more sections along the length direction thereof, and then the sections of the support beam 110 are sequentially connected to assemble the complete support beam 110. Illustratively, as shown in fig. 18, the support beam 110 may be divided into three sections of an upper beam 111, a middle beam 112 and a lower beam 113103, the upper beam 111, the middle beam 112 and the lower beam 113103 being sequentially connected (e.g., welded) to form a complete support beam 110, and the end portions of the upper beam 111 and the lower beam 113103, which are far from each other, being provided with end caps 108.

For example, the supporting beam 110 may be made of plastic or metal, so as to satisfy the overall structural strength requirement of the spindle 100. When the hinge mechanism 10c is applied to the foldable electronic device, the support beam 110 may be exposed in the folded state, and at this time, the support beam 110 may be made of a metal material to enhance the external appearance of the foldable electronic device 1.

The cover plate 120 may be made of a metal material, so that when the supporting beam 110 is made of a metal material, the cover plate 120 and the supporting beam 110 may be made of the same metal material, so as to improve the consistency of the spindle 100 and improve the structural strength and reliability of the spindle 100. Of course, the cover 120 may also be made of plastic, so as to reduce the overall weight of the spindle 100, which is beneficial to the light and thin design of the foldable electronic device 1, and also helps to save the manufacturing cost of the foldable electronic device 1.

In describing embodiments of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly coupled, indirectly coupled through an intermediary, in communication between two elements, or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The terms first, second, third, fourth and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims

1. The utility model provides a pivot mechanism, is applied to collapsible electronic equipment, its characterized in that includes upper shaft portion, well shaft portion and the lower shaft portion that sets gradually along length direction, upper shaft portion with lower shaft portion symmetry sets up, just pivot mechanism includes:

a main shaft;

the connecting plates are positioned at two sides of the width direction of the main shaft;

The motion assembly, the synchronization structure, the first damping module and at least one group of second damping modules are movably connected between the main shaft and the connecting plate, the first damping module generates damping force in the area where the main shaft is located, and the second damping module generates damping force in the area where the connecting plate is located;

Wherein, in the upper shaft part and the lower shaft part, from the end part of the rotating shaft mechanism to the center of the rotating shaft mechanism, the motion assembly, the synchronization structure and the first damping module are sequentially arranged; the at least one second damping module is arranged on the middle shaft part, each second damping module comprises two second damping modules, and the two second damping modules are respectively connected with the connecting plates on two sides of the main shaft.

2. The spindle mechanism of claim 1, wherein the motion assembly includes a primary swing arm and a secondary swing arm at the upper and lower shaft portions, the primary swing arm being disposed adjacent the secondary swing arm;

One end of the main swing arm is in sliding and rotating connection with the main shaft, and the other end of the main swing arm is in sliding and rotating connection with the connecting plate at the corresponding side; one end of the auxiliary swing arm is connected with the main shaft in a sliding and rotating mode, and the other end of the auxiliary swing arm is connected with the connecting plate on the corresponding side in a sliding mode.

3. A spindle mechanism according to claim 2, wherein the secondary swing arm is located on a side of the end of the primary swing arm facing away from the spindle mechanism.

4. The spindle mechanism of claim 2, wherein the motion assembly further comprises an auxiliary swing arm located at the central shaft portion, one end of the auxiliary swing arm is movably connected with the main shaft, and the other end of the auxiliary swing arm is connected with the connecting plate.

5. The spindle mechanism of claim 4, wherein one end of the auxiliary swing arm is slidably and rotatably coupled to the spindle, and the other end of the auxiliary swing arm is slidably and rotatably coupled to the connection plate.

6. The pivot mechanism of claim 4 wherein the auxiliary swing arm is disposed between the first damping module and the second damping module.

7. The spindle assembly of any one of claims 1-6 wherein threading grooves are formed in the connecting plates on both sides of the spindle, the threading grooves in the connecting plates on both sides are disposed opposite each other, and the threading grooves are located at the central shaft portion.

8. The rotary shaft mechanism according to claim 7, wherein the number of the second damping modules is one, two second damping modules are arranged on the same side of the wire penetrating groove, or two second damping modules are respectively arranged on two sides of the wire penetrating groove.

9. The spindle mechanism according to any one of claims 1-6, wherein the synchronization structure comprises:

Two synchronous swing arms; the first ends of the two synchronous swing arms are respectively connected to two sides of the main shaft in the width direction in a rotating way and synchronously and reversely rotate; the second ends of the two synchronous swing arms are respectively connected with the connecting plates on two sides of the main shaft in a sliding mode.

10. The spindle mechanism of claim 9, wherein the first ends of both of the synchronization swing arms are provided with synchronization gears, and wherein the synchronization gears are intermeshed.

11. The spindle mechanism according to any one of claims 1-6, wherein the first damping module comprises:

The damping structure is sleeved on the two supporting shafts and generates damping force in the area where the main shaft is located.

12. The spindle mechanism of claim 11, wherein the damping structure comprises:

The elastic component is sleeved on the two supporting shafts and is abutted to the two driving parts, and the driving parts rotate and squeeze the elastic component to drive the elastic component to deform.

13. The spindle mechanism according to any one of claims 1-6, wherein the second damping module comprises:

14. The spindle mechanism of claim 13, wherein a mounting groove is formed in the damping swing arm, an avoidance opening is formed in one end of the damping swing arm, which faces the main shaft, and the avoidance opening is communicated with the mounting groove;

The damping component is clamped in the mounting groove, and passes through the avoidance opening to be in butt joint with the side wall of the main shaft towards one side of the main shaft; as the connection plate moves relative to the main shaft, the damping assembly slides along the side wall of the main shaft and elastically deforms in the width direction of the main shaft.

15. The spindle mechanism of claim 14, wherein the damping assembly comprises a bracket assembly and at least one resilient member;

16. The spindle mechanism according to any one of claims 1-6, further comprising:

17. The hinge mechanism according to any one of claims 1-6, wherein a folding screen is provided around the connection plates on both sides of the spindle when the foldable electronic device is in a folded state.

18. A foldable electronic device comprising a first housing, a second housing, a folding screen, and the spindle mechanism of any one of claims 1-17;

The connecting plates at two sides of the rotating shaft mechanism are respectively connected with the first shell and the second shell, the folding screen is attached to the first shell and the second shell, and the folding screen is supported by the rotating shaft mechanism.