Damping swing arm, damping assembly, rotating shaft mechanism and electronic equipment

Abstract

The utility model provides a damping swing arm, a damping assembly, a rotating shaft mechanism and electronic equipment, and relates to the technical field of electronic products. The damping swing arm comprises a left swing arm and a right swing arm. The left swing arm comprises a left body and a left stop sleeve, the left stop sleeve is located at the end of the left body, and a left combination part is arranged at the other end of the left body. The right swing arm comprises a right body and a right stop sleeve, the right stop sleeve is located at the end of the right body, and a right combination part is arranged at the other end of the right body. And the left combination part and the right combination part are in butt joint so as to be connected into a complete damping swing arm. When the damping assembly is assembled, the left swing arm, the elastic piece, the driving sleeve, the right swing arm and other components can be sequentially installed on the pin shaft in series, and after the elastic piece is compressed to the pre-pressing length, the left swing arm and the right swing arm are connected together. In this way, the assembling process of the damping assembly can be simplified, the reliability of the clamp is enhanced, and the assembling efficiency of the damping assembly is improved. In addition, parts of the damping assembly can be reduced, and the effective design space of the rotating shaft mechanism is increased.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a damping swing arm, a damping component, a rotating shaft mechanism and an electronic device. Background Art

[0002] Folding screens have the property of being bendable, so that electronic devices equipped with folding screens, i.e. foldable electronic devices, can switch between an unfolded state and a folded state. Foldable electronic devices have a large display area and are easy to carry, and are increasingly favored by consumers.

[0003] As the core component of a foldable electronic device, the hinge mechanism is used to realize the relative rotation between the two main parts of the foldable electronic device, and realize the unfolding or folding of the folding screen through the relative rotation between the two main parts. Among them, the damping component group in the hinge mechanism is used to provide damping force when opening and closing the electronic device. At present, the damping component is mostly a spring and a concave cam matching structure. During the relative rotation of the engaged concave cam, the spring is squeezed to generate a variable damping force. Due to the requirement of damping force, the spring needs to be pre-compressed to a certain length under the action of external force before it can be installed in the damping component. Therefore, the damping component is a relatively difficult component to assemble in the hinge mechanism.

[0004] However, due to the thinning and lightness of the rotating shaft mechanism, the spacing between the moving swing arms is getting smaller and smaller, the assembly of the damping component is becoming more and more complicated, the reliability of the assembly fixture is low, and the assembly efficiency is low. Utility Model Content

[0005] The present application provides a damping swing arm, a damping assembly, a rotating shaft mechanism and an electronic device. The damping swing arm is disassembled and assembled, which can simplify the assembly process of the damping assembly, enhance the reliability of the clamp, and improve the assembly efficiency of the damping assembly.

[0006] A first aspect of the present application provides a damping swing arm, comprising:

[0007] The left swing arm comprises a left main body and a left stop sleeve, wherein the left stop sleeve is connected to one end of the left main body, and the other end of the left main body is provided with a left joint portion;

[0008] The right swing arm comprises a right main body and a right stop sleeve, wherein the right stop sleeve is connected to one end of the right main body, and the other end of the right main body is provided with a right joint portion;

[0009] The left joint portion and the right joint portion are fitted and connected along the thickness direction of the damping swing arm.

[0010] The damping swing arm provided by the present application comprises a left swing arm and a right swing arm, and the left swing arm and the right swing arm are connected to form a damping swing arm. The left swing arm comprises a left main body and a left stop sleeve, the left stop sleeve is located at the end of the left main body, and the other end of the left main body is provided with a left joint. The right swing arm comprises a right main body and a right stop sleeve, the right stop sleeve is located at the end of the right main body, and the other end of the right main body is provided with a right joint. The left joint of the left swing arm and the right joint of the right swing arm are butted to form a complete damping swing arm. When assembling the damping assembly, the left swing arm, the elastic member, the driving sleeve and the right swing arm and other components can be serially mounted on the pin shaft in sequence, and after the elastic member is compressed to the pre-stressed length, the left swing arm and the right swing arm are connected together. In this way, the assembly process of the damping assembly can be simplified, the reliability of the fixture can be enhanced, and the assembly efficiency of the damping assembly can be improved. In addition, the components of the damping assembly can be reduced, the damping assembly occupies less space, and the effective design space of the rotating shaft mechanism can be increased.

[0011] In a possible implementation manner, along the width direction of the left main body, the left connecting portion extends to both sides of the left main body; along the width direction of the right main body, the right main body extends to both sides of the right main body.

[0012] By extending the left joint to both sides of the left body in the width direction, and extending the right joint to both sides of the right body in the width direction, the left joint and the right joint have a large fitting area and a high connection strength, which is helpful to avoid the damping swing arm from being misaligned during movement, improve the reliability of the damping swing arm, and ensure the service life of the damping assembly.

[0013] In a possible implementation manner, two side surfaces of the joint portion of the left connecting portion and the right connecting portion are flush with two side surfaces of the left main body and the right main body.

[0014] By making the two side surfaces of the joint of the left swing arm and the right swing arm flush with the two side surfaces of the left body and the right body, the overall thickness of the left joint part and the right joint part after connection is consistent with the thickness of other parts of the swing arm body. In this way, the thickness of the swing arm body of the damping swing arm is uniform, the force of the damping swing arm is balanced, and the structural strength and appearance of the damping swing arm can be improved.

[0015] In a possible implementation manner, the left joint portion and the right joint portion are respectively located on both sides of the damping swing arm in the thickness direction.

[0016] By locating the left joint of the left swing arm and the right joint of the right swing arm on both sides of the thickness direction of the damping swing arm respectively, the docking of the left swing arm and the right swing arm is facilitated, and the assembly efficiency of the damping swing arm can be improved.

[0017] In a possible implementation manner, the end surface of the left connecting portion facing the right main body is a plane, and the end surface of the right connecting portion facing the left main body is a plane.

[0018] By setting the end surface of the left joint facing the right main body as a plane, and setting the end surface of the right joint facing the left main body as a plane, when the left swing arm and the right swing arm are docked, the left joint and the right joint have greater freedom of movement, which facilitates the assembly of the damping swing arm.

[0019] In a possible implementation manner, at least one of an end surface of the left connecting portion facing the right main body and an end surface of the right connecting portion facing the left main body is a non-planar surface.

[0020] By making at least one of the end surface of the left joint portion facing the right body and the end surface of the right joint portion facing the left body non-planar, the butt joint seam formed when the left swing arm and the right swing arm are butted is a non-straight seam. In the width direction of the swing arm body, the relative movement of the left swing arm and the right swing arm can be restricted, the butt joint accuracy of the left swing arm and the right swing arm can be improved, and the connection reliability of the left swing arm and the right swing arm can be enhanced.

[0021] In a possible implementation, along the width direction of the left main body, the end surface of the left joint portion facing the right main body includes a first section, a second section, and a third section connected in sequence, and an extension direction of the second section is inclined to the width direction of the left main body;

[0022] And / or, along the width direction of the right main body, the end surface of the right connecting portion facing the left main body includes a first section, a second section and a third section connected in sequence, and an extension direction of the second section is inclined to the width direction of the right main body.

[0023] In a possible implementation, the first section of the left joint portion and the third section of the left joint portion extend in the width direction of the left main body, and the second section of the left joint portion extends in the length direction of the left main body;

[0024] And / or, the first section of the right connecting portion and the third section of the right connecting portion extend in the width direction of the right main body, and the second section of the right connecting portion extends in the length direction of the right main body.

[0025] By making the first section and the third section of the left joint part extend along the width direction of the left main body, and making the second section of the left joint part extend along the length direction of the left main body, the force generated between the left joint part and the right joint part can be transmitted along the length direction and the width direction of the swing arm main body, and the damping swing arm is more balanced in overall force. Similarly, by making the first section and the third section of the right joint part extend along the width direction of the right main body, and making the second section of the right joint part extend along the length direction of the right main body, the force generated between the right joint part and the left joint part can be transmitted along the length direction and the width direction of the swing arm main body, and the damping swing arm is more balanced in overall force, and the reliability of the damping swing arm is better.

[0026] In a possible implementation, along the width direction of the left main body, the left combining portion includes a left upper portion and a left lower portion, the left upper portion is located on a first side in the thickness direction of the left main body, and the left lower portion is located on a second side in the thickness direction of the left main body;

[0027] Along the width direction of the right main body, the right combining portion includes a right upper portion and a right lower portion, the right upper portion is located on the second side in the thickness direction of the right main body, and the right lower portion is located on the first side in the thickness direction of the right main body;

[0028] Among them, along the thickness direction of the damping swing arm, the upper left part and the upper right part are fitted and connected, and the lower left part and the lower right part are fitted and connected; along the width direction of the damping swing arm, the upper left part and the lower right part abut against each other, and the upper right part and the lower left part abut against each other.

[0029] In this way, in the thickness direction of the damping swing arm, the upper left part of the left joint part fits with the upper right part of the right joint part, and the lower left part of the left joint part fits with the lower right part of the right joint part. In the width direction of the swing arm body of the damping swing arm, the upper left part of the left joint part and the lower right part of the right joint part abut against each other, and the upper right part of the right joint part and the lower left part of the left joint part abut against each other. In the thickness direction of the damping swing arm and the width direction of the swing arm body, the left joint part and the right joint part resist each other, which can enhance the connection reliability of the left swing arm and the right swing arm and enhance the anti-torsion performance of the damping swing arm.

[0030] In a possible implementation, the extension direction of the abutting surface between the upper left portion and the lower right portion is the length direction of the damping swing arm, and the extension direction of the abutting surface between the upper right portion and the lower left portion is the length direction of the damping swing arm.

[0031] By making the abutting surface between the upper left part of the left joint and the lower right part of the right joint extend along the length direction of the swing arm body, and making the abutting surface between the upper right part of the right joint and the lower left part of the left joint extend along the length direction of the swing arm body, the forces between the left joint and the right joint are balanced with each other, the overall force of the damping swing arm is more balanced, and the reliability of the damping swing arm is better.

[0032] In a possible implementation manner, the extension length of the left main body is the same as the extension length of the right main body, and the center line of the joint portion between the left joint portion and the right joint portion coincides with the center line of the damping swing arm.

[0033] In a possible implementation manner, the extension length of the left main body is different from the extension length of the right main body, and the center line of the joint portion between the left joint portion and the right joint portion does not coincide with the center line of the damping swing arm.

[0034] In a possible embodiment, the left joint portion and the right joint portion have a through weld;

[0035] Alternatively, the left joint portion and the right joint portion have butt welds;

[0036] Alternatively, the left joint portion and the right joint portion have penetration welds and butt welds.

[0037] In a possible implementation, the left swing arm further includes a left rotating part, and the left rotating part and the left stop sleeve are respectively located on both sides of the left main body; the right swing arm further includes a right rotating part, and the right rotating part and the right stop sleeve are respectively located on both sides of the right main body.

[0038] By arranging a left rotating part on the left swing arm, the left rotating part and the left stop sleeve are respectively located on both sides of the left swing arm. And by arranging a right rotating part on the right swing arm, the right rotating part and the right stop sleeve are respectively located on both sides of the right swing arm. The left rotating part and the right rotating part are both arranged toward the connecting component, and the damping swing arm is movably connected with the connecting component by means of the left rotating part and the right rotating part. The left rotating part and the right rotating part can increase the contact area between the damping swing arm and the connecting component, and the force balance of the damping swing arm is good, and the motion trajectory accuracy of the damping swing arm is high.

[0039] A second aspect of the present application provides a damping assembly, comprising:

[0040] Damped swing arm as described above;

[0041] A pin shaft is passed through the damping swing arm, and two ends of the pin shaft pass through the left stop sleeve and the right stop sleeve respectively;

[0042] At least one driving sleeve is sleeved on the pin shaft, and at least one of the left stop sleeve and the right stop sleeve abuts against the driving sleeve; and the left stop sleeve and the right stop sleeve abutting against the driving sleeve are provided with a concave-convex structure that cooperates with the driving sleeve;

[0043] The elastic member is sleeved on the pin shaft and is located on a side of the end of the driving sleeve away from the damping swing arm.

[0044] The damping assembly provided by the present application includes a damping swing arm, a pin shaft, a driving sleeve and an elastic member, the pin shaft is passed through the damping swing arm, the driving sleeve and the elastic member are both sleeved on the pin shaft, and the driving sleeve is in contact with the stop sleeve of the damping swing arm, and the elastic member is located on the side of the driving sleeve away from the stop sleeve. The damping swing arm is configured to include a left swing arm and a right swing arm, and the left swing arm and the right swing arm are connected to form a damping swing arm. The left swing arm includes a left main body and a left stop sleeve, the left stop sleeve is located at the end of the left main body, and the other end of the left main body is provided with a left joint. The right swing arm includes a right main body and a right stop sleeve, the right stop sleeve is located at the end of the right main body, and the other end of the right main body is provided with a right joint. The left joint of the left swing arm and the right joint of the right swing arm are butted against each other to be connected to form a complete damping swing arm. When assembling the damping assembly, the left swing arm, the elastic member, the drive sleeve, the right swing arm and other components can be sequentially mounted on the pin shaft, and after the elastic member is compressed to the pre-compression length, the left swing arm and the right swing arm can be connected together. In this way, the assembly process of the damping assembly can be simplified, the reliability of the fixture can be enhanced, and the assembly efficiency of the damping assembly can be improved. In addition, the components of the damping assembly can be reduced, the damping assembly occupies less space, and the effective design space of the rotating shaft mechanism can be increased.

[0045] In a possible implementation manner, the number of the driving sleeve is one, and the damping assembly further includes:

[0046] The friction pair is sleeved on the pin shaft and located on the side of the elastic member away from the driving sleeve; wherein the friction pair comprises friction plates and fixed plates alternately stacked.

[0047] By sleeve-arranging a friction pair on the pin shaft, the friction pair is arranged between the elastic member and the stop sleeve at the other end of the damping swing arm, and the friction pair is formed by overlapping multiple friction plates and multiple fixed plates in sequence. In the process of the damping swing arm driving the pin shaft to rotate, the fixed plate is fixed relative to the main shaft, and the friction plate rotates with the pin shaft, and friction force is generated between the friction plate and the fixed plate to increase the damping force of the damping assembly.

[0048] In a possible implementation manner, a plurality of grooves are distributed on the surface of the friction plate, and the grooves are filled with lubricant.

[0049] By setting grooves on the surface of the friction plate and filling the grooves with lubricant, the lubricity between the friction plate and the fixed plate is enhanced to ensure smooth rotation of the friction plate. In addition, problems such as pin shaft jamming and friction pair failure are avoided, ensuring the reliability and service life of the damping component.

[0050] In a possible implementation manner, at least one end of the pin shaft is provided with a clamping groove, a clamping spring is provided in the clamping groove, and at least one of the left stop sleeve and the right stop sleeve abuts against the clamping spring.

[0051] By providing a slot at at least one end of the pin shaft, the end of the pin shaft can be used as a free end, and the left swing arm, the friction pair, the elastic member, the drive sleeve and the right swing arm can be sequentially mounted from the end of the pin shaft to the pin shaft. In addition, by inserting a retaining spring into the slot, the corresponding left stop sleeve and the corresponding right stop sleeve abut against the retaining spring, and the corresponding left swing arm and the corresponding right swing arm can be positioned, so that the left joint portion of the left swing arm is completely fitted with the right joint portion of the right swing arm.

[0052] A third aspect of the present application provides a rotating shaft mechanism, comprising:

[0053] Spindle;

[0054] A connecting component, movably connected on both sides of the main shaft in the width direction;

[0055] As the damping assembly mentioned above, the damping assembly is movably connected between the main shaft and the connecting assembly.

[0056] The rotating shaft mechanism provided by the present application includes a main shaft, a connecting assembly and a damping assembly, wherein the connecting assembly is movably connected to both sides of the main shaft, and the damping assembly is movably connected between the main shaft and the connecting assembly. By setting the damping swing arm of the damping assembly to include a left swing arm and a right swing arm, the left swing arm and the right swing arm are connected to form a damping swing arm. Wherein, the left swing arm includes a left main body and a left stop sleeve, the left stop sleeve is located at the end of the left main body, and the other end of the left main body is provided with a left joint. The right swing arm includes a right main body and a right stop sleeve, the right stop sleeve is located at the end of the right main body, and the other end of the right main body is provided with a right joint. The left joint of the left swing arm and the right joint of the right swing arm are butted to form a complete damping swing arm. When assembling the damping assembly, the left swing arm, the elastic member, the driving sleeve and the right swing arm and other components can be sequentially mounted on the pin shaft, and after the elastic member is compressed to the pre-compression length, the left swing arm and the right swing arm are connected together. In this way, the assembly process of the damping assembly can be simplified, the reliability of the clamp can be enhanced, and the assembly efficiency of the damping assembly can be improved. Furthermore, the number of components of the damping assembly can be reduced, the damping assembly occupies less space, and the effective design space of the rotating shaft mechanism can be increased.

[0057] A fourth aspect of the present application provides an electronic device, comprising a first housing, a second housing, a folding screen, and the aforementioned hinge mechanism;

[0058] The first shell and the second shell are respectively connected to the two sides of the rotating shaft mechanism, the folding screen is attached to the first shell and the second shell, and the folding screen is supported by the rotating shaft mechanism.

[0059] The electronic device provided by the present application includes a first housing, a second housing, a folding screen and a rotating shaft mechanism, wherein a damping assembly is arranged in the rotating shaft mechanism, and the damping swing arm of the damping assembly is arranged to include a left swing arm and a right swing arm, and the left swing arm and the right swing arm are connected to form a damping swing arm. Wherein, the left swing arm includes a left main body and a left stop sleeve, the left stop sleeve is located at the end of the left main body, and the other end of the left main body is provided with a left joint. The right swing arm includes a right main body and a right stop sleeve, the right stop sleeve is located at the end of the right main body, and the other end of the right main body is provided with a right joint. The left joint of the left swing arm and the right joint of the right swing arm are butted to form a complete damping swing arm. When assembling the damping assembly, the left swing arm, the elastic member, the driving sleeve and the right swing arm and other components can be sequentially mounted on the pin shaft, and after the elastic member is compressed to the pre-compression length, the left swing arm and the right swing arm are connected together. In this way, the assembly process of the damping assembly can be simplified, the reliability of the clamp can be enhanced, and the assembly efficiency of the damping assembly can be improved. Furthermore, the number of components of the damping assembly can be reduced, the damping assembly occupies less space, and the effective design space of the rotating shaft mechanism can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application when in an unfolded state;

[0061] Figure 2 for Figure 1 A schematic diagram of the structure of the electronic device in a folded state;

[0062] Figure 3 A schematic diagram of the exploded structure of an electronic device provided in an embodiment of the present application;

[0063] Figure 4 A schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application when in an expanded state;

[0064] Figure 5 for Figure 4 A schematic diagram of the structure when the rotating shaft mechanism is in a folded state;

[0065] Figure 6 for Figure 4 Exploded structural diagram of the rotating shaft mechanism in FIG.

[0066] Figure 7 It is a structural schematic diagram of a damping component in the related art;

[0067] Figure 8 for Figure 7 Assembly flow chart of the damping assembly in FIG.

[0068] Fig. 9 A schematic diagram of the structure of a damping assembly provided in an embodiment of the present application;

[0069] Fig.10 for Fig. 9 Exploded structural diagram of the damping components in;

[0070] Fig.11 for Fig. 9 A schematic structural diagram of a damping swing arm of a damping assembly in FIG.

[0071] Fig.12 An assembly flow chart of a damping assembly provided in an embodiment of the present application;

[0072] Fig.13 A schematic diagram of the structure of a damping swing arm provided in an embodiment of the present application;

[0073] Fig.14 A schematic diagram of the structure of another damping swing arm provided in an embodiment of the present application;

[0074] Fig.15 A schematic diagram of the structure of a third damping swing arm provided in an embodiment of the present application;

[0075] Fig.16 A schematic diagram of a disassembly position of a damping swing arm provided in an embodiment of the present application;

[0076] Fig.17 A schematic diagram of another disassembly position of the damping swing arm provided in an embodiment of the present application;

[0077] Fig.18 A schematic diagram of a connection form of a damping swing arm provided in an embodiment of the present application;

[0078] Fig.19 A schematic diagram of another connection form of the damping swing arm provided in an embodiment of the present application. DETAILED DESCRIPTION

[0079] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0080] An embodiment of the present application provides an electronic device, which may be a foldable electronic device. Furthermore, the electronic device may be a consumer electronic product. Exemplarily, the electronic device includes, but is not limited to, a foldable mobile phone, a laptop computer, a notebook computer, a netbook, a personal digital assistant (PDA), a personal computer, a multimedia player, an e-book reader, a vehicle-mounted device, a virtual reality (VR) device, an augmented reality (AR) device, or a wearable device and other foldable electronic products. Among them, the wearable device includes, but is not limited to, a smart bracelet, a smart watch, a smart head-mounted display, smart glasses, etc.

[0081] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application when it is in an unfolded state. Figure 2 for Figure 1 Schematic diagram of the structure of the electronic device in the folded state. Figure 1 and Figure 2 As shown, this embodiment takes the electronic device as a foldable mobile phone as an example for description.

[0082] For electronic devices, in different usage scenarios, the electronic devices may have different usage states. Figure 1 The electronic device is shown in an unfolded state, and the unfolding angle α of the electronic device is, for example, 180°. At this time, the electronic device can realize a large-screen display. Figure 2 The electronic device is shown in a folded state, in which case the electronic device is small in size and easy to carry.

[0083] It should be noted that the angles described in this embodiment are allowed to have a slight deviation. Figure 1 The unfolding angle α of the electronic device shown is 180°, which means that the unfolding angle α may be 180°, or approximately 180°, such as 170°, 175°, 185° or 190°, etc. The angles described below by way of example may be understood in the same way.

[0084] in addition, Figure 1 and Figure 2 The electronic device shown in FIG. 1 is an electronic device that can be folded once, and the electronic device includes two parts that can rotate relative to each other. When the two parts rotate to coplanar, the electronic device is in an unfolded state (eg, Figure 1 When the two parts are rotated to overlap each other, the electronic device is in a folded state (as shown in FIG. Figure 2 In other embodiments, the electronic device may be an electronic device that can be folded more than twice. In this case, the electronic device may include multiple parts that are connected by sequential rotation, and two adjacent parts may be relatively far apart to be unfolded to an unfolded state, and two adjacent parts may be relatively close to be folded to a folded state.

[0085] Figure 3 This is a schematic diagram of the exploded structure of an electronic device provided in an embodiment of the present application. Figure 3As shown, the electronic device includes a folding screen 1 and a shell assembly 2. One side surface of the folding screen 1 is used to display image information, and the side surface of the folding screen 1 is usually defined as its front side, and the other side surface opposite to the front side is its back side. The shell assembly 2 is arranged around the circumference and back side of the folding screen 1 to support and fix the folding screen 1 and provide protection. The front side of the folding screen 1 is exposed outside the shell assembly 2 so that the user can view the content displayed on the folding screen 1 or perform input operations on the electronic device.

[0086] The folding screen 1 may include a first non-bending portion 11, a bendable portion 13, and a second non-bending portion 12 arranged in sequence along a first direction, or in other words, in the first direction, the bendable portion 13 is located between the first non-bending portion 11 and the second non-bending portion 12. The folding method of the electronic device may be Figure 1 and Figure 2 In the horizontal fold shown in FIG, the first direction can be Figure 3 Of course, the electronic device can also be folded vertically, which is not limited in this embodiment.

[0087] The foldable screen 1 may be made of a flexible material so that the bendable portion 13 is bendable. For example, the foldable screen 1 may be an organic light-emitting diode (OLED) display screen.

[0088] The housing assembly 2 is used to support and fix the folding screen 1, and drive the folding screen 1 to switch between the folded state and the unfolded state. Figure 3 As shown, the housing assembly 2 includes a first housing 10, a second housing 20 and a shaft mechanism 30, and the shaft mechanism 30 is connected between the first housing 10 and the second housing 20. The first housing 10 and the second housing 20 are rotatably connected through the shaft mechanism 30, thereby realizing relative rotation between the first housing 10 and the second housing 20.

[0089] The first housing 10 supports and fixes the first non-bending portion 11 of the folding screen 1, and the second housing 20 supports and fixes the second non-bending portion 12 of the folding screen 1. In other words, the first non-bending portion 11 of the folding screen 1 is fixedly connected to the first housing 10, the second non-bending portion 12 of the folding screen 1 is fixedly connected to the second housing 20, and the bendable portion 13 of the folding screen 1 is arranged corresponding to the hinge mechanism 30.

[0090] During the use of the electronic device, the first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 always remain in a planar state, while the bendable portion 13 of the folding screen 1 can be bent. When the hinge mechanism 30 drives the first shell 10 and the second shell 20 to rotate relative to each other, the first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 change their orientations accordingly, and the bendable portion 13 of the folding screen 1 bends or flattens as the orientations of the first non-bending portion 11 and the second non-bending portion 12 change.

[0091] The first shell 10 and the second shell 20 can be rotated in a direction away from each other until they are coplanar. At this time, the shell assembly 2 is in an unfolded state, and the folding screen 1 is in an unfolded state as the shell assembly 2 is unfolded (such as Figure 1 The first shell 10 and the second shell 20 can also rotate in a direction close to each other until they are relatively stacked. At this time, the shell assembly 2 is in a folded state, and the folding screen 1 is in a folded state as the shell assembly 2 is folded (as shown). Figure 2 shown).

[0092] It should be stated that Figure 1 and Figure 2 In the example, the electronic device is an outward folding electronic device. When the electronic device is in the folded state, the first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 are opposite to each other, and the housing component 2 is located between the first non-bending portion 11 and the second non-bending portion 12. At this time, the folding screen 1 is surrounded outside the housing component 2 and is visible to the user. In other words, when the outward folding electronic device is in the folded state, the folding screen 1 is exposed to the outside, and the folding screen 1 can be used to realize the display function.

[0093] In other embodiments, the electronic device may also be an inward folding electronic device, and when the electronic device is in the folded state, the first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 are relatively fitted, the bendable portion 13 of the folding screen 1 is bent, and the housing assembly 2 is disposed outside the folding screen 1. At this time, the housing assembly 2 can provide protection for the folding screen 1 to prevent the folding screen 1 from being scratched by hard objects.

[0094] When the inward-folding electronic device is in the folded state, the folding screen 1 is surrounded by the housing assembly 2, the front of the folding screen 1 is folded inside, and the folding screen 1 is not visible to the outside. Therefore, if the inward-folding electronic device needs to realize the display function in the folded state, a straight screen 3 can be added on the back of the housing, and the electronic device relies on the straight screen 3 for display in the folded state.

[0095] In addition, in some embodiments, the electronic device, especially the inward folding electronic device, can be suspended at a certain angle between the unfolded state and the folded state. Exemplarily, the hovering angle of the electronic device can be 120°, 130°, 140° or 150°, etc. Among them, the shell assembly 2 can be relied on to provide a damping force so that the shell assembly 2 is suspended in a semi-expanded state between the folded state and the unfolded state, and the folding screen 1 stays in the semi-expanded state with the shell assembly 2. At this time, the bendable portion 13 of the folding screen 1 is also in a bent state, and the bending degree of the bendable portion 13 is less than the bending degree when the folding screen 1 is in the folded state. The first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 are relatively inclined, and the angle between the first non-bending portion 11 and the second non-bending portion 12 is, for example, 120°, 130°, 140° or 150°, etc.

[0096] Continue to refer to Figure 3 In the shell assembly 2 of the electronic device, the first shell 10 and the second shell 20 may both include a middle frame 201, and the first non-bending portion 11 and the second non-bending portion 12 of the folding screen 1 may be supported on the front side of the corresponding middle frame 201. Among them, for an outward-folding electronic device or an inward-folding electronic device without an additional straight screen 3, the first shell 10 and the second shell 20 of the electronic device may both further include a back cover 202, and the back cover 202 is connected to a side surface of the middle frame 201 away from the folding screen 1. For an inward-folding electronic device with an additional straight screen 3, one of the first shell 10 and the second shell 20 may not include the back cover 202, but instead install the straight screen 3 on the back side of the middle frame 201.

[0097] In the first housing 10 and the second housing 20, the middle frame 201 and the back cover 202 (or the straight screen 3) together form a receiving cavity, and some functional components of the electronic device (not shown in the figure) are installed in the receiving cavity. For example, the receiving cavity is used to install functional components such as circuit boards, batteries, camera modules, microphones, and speakers.

[0098] The following is a detailed description of the rotating shaft mechanism 30 of the embodiment of the present application.

[0099] Figure 4 This is a schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application when it is in an expanded state. Figure 5 for Figure 4 Schematic diagram of the structure when the rotating shaft mechanism is in a folded state.

[0100] Reference Figure 4 and Figure 5As shown, the rotating shaft mechanism 30 includes a main shaft 100 and a connecting assembly 200. The main shaft 100 is the main supporting structure of the rotating shaft mechanism 30. The connecting assembly 200 is movably connected to both sides of the main shaft 100. The connecting assemblies 200 on both sides of the main shaft 100 are respectively connected to the first shell 10 and the second shell 20. The main shaft 100 can be extended along the side edges of the opposite sides of the first shell 10 and the second shell 20. The main shaft 100 is equivalent to the rotation axis of the shell assembly 2. The first shell 10 and the second shell 20 rotate around the length direction of the main shaft 100. The connecting assemblies 200 on both sides of the main shaft 100 move synchronously relative to the main shaft 100 to drive the first shell 10 and the second shell 20 to move synchronously relative to each other, so as to realize the switching of the shell assembly 2 between the unfolded state and the folded state.

[0101] Among them, refer to Figure 4 As shown in the figure, the connecting components 200 on both sides of the main shaft 100 are unfolded on both sides of the main shaft 100, and the connecting components 200 on both sides of the main shaft 100 are coplanar with the main shaft 100. At this time, the rotating shaft mechanism 30 is in the unfolded state, and the electronic device is also in the unfolded state. Figure 5 As shown in the figure, the connection components 200 on both sides of the main shaft 100 are close to each other and folded on one side of the main shaft 100 (in the thickness direction), and the connection components 200 on both sides of the main shaft 100 are almost perpendicular to the main shaft 100 and are arranged opposite to each other. At this time, the hinge mechanism 30 is in a folded state, and the electronic device is also in a folded state.

[0102] When the hinge mechanism 30 is applied to an outward-folding electronic device, the hinge mechanism 30 is in a folded state, and the folding screen 1 is wrapped around the outside of the hinge mechanism 30. That is, when the hinge mechanism 30 is in a folded state, the folding connection is on the opposite side of the two connecting components 200. When the hinge mechanism 30 is applied to an inward-folding electronic device, the hinge mechanism 30 is in a folded state, and the hinge mechanism 30 is arranged around the outside of the bendable portion 13 of the folding screen 1. That is, when the hinge mechanism 30 is in a folded state, the folding screen 1 is connected to the opposite side of the two connecting components 200.

[0103] The following description will be given by taking the case where the hinge mechanism 30 is applied to an outward-folding electronic device and the folding screen 1 is wrapped around the outside of the hinge mechanism 30 when the hinge mechanism 30 is in a folded state.

[0104] Figure 6 for Figure 4 The exploded structure diagram of the shaft mechanism in . Figure 6As shown, the shaft mechanism 30 also includes some components connected between the main shaft 100 and the connecting assembly 200, such as the moving component 300, the synchronizing component 400, the damping component 500 and other components, which can be movably connected between the main shaft 100 and the connecting assembly 200. Among them, the moving component 300 is used to realize the rotation and translation of the connecting assembly 200 relative to the main shaft 100, so that the shaft mechanism 30 drives the first shell 10 and the second shell 20 to move relative to each other, and realizes the switching of the shell assembly 2 between the unfolded state and the folded state. The synchronizing component 400 is used to make the connecting assembly 200 on both sides of the main shaft 100 move synchronously relative to the main shaft 100, so that the first shell 10 and the second shell 20 rotate and translate synchronously, ensuring the reliability and accuracy of the movement of the shell assembly 2. The damping component 500 is used to provide damping force to ensure the stability of the shell assembly 2 in the unfolded state, folded state and state conversion process, and improve the operating feel of the electronic device.

[0105] Reference Figure 6 As shown, the connection assembly 200 connected to both sides of the main shaft 100 may include a connection plate 210, and the connection plate 210 is located on both sides of the width direction of the main shaft 100, and the connection plates 210 on both sides of the main shaft 100 are respectively connected to the first shell 10 and the second shell 20. For example, the connection plate 210 and the first shell 10 (the second shell 20) are locked together by fasteners such as screws and rivets, or the connection plate 210 and the first shell 10 (the second shell 20) are welded or bonded.

[0106] The connecting plate 210 is movably connected to the main shaft 100 by means of the aforementioned moving component 300, the synchronous component 400, the damping assembly 500 and other components. The moving component 300 enables the two connecting plates 210 to rotate and translate relative to the middle main shaft 100, and the two connecting plates 210 drive the first shell 10 and the second shell 20 to move relative to each other, so as to realize the switching of the shell assembly 2 between the unfolded state and the folded state. The synchronous component 400 can ensure the synchronous movement of the connecting plates 210 on both sides of the main shaft 100, and ensure the synchronous movement of the first shell 10 and the second shell 20. The damping force provided by the damping assembly 500 during the unfolded state, the folded state and the state transition of the shell assembly 2 can ensure the stability and reliability of the electronic device.

[0107] For an outward-folding electronic device, since the folding screen 1 is wrapped outside the hinge mechanism 30 in the folded state, when it is converted from the unfolded state to the folded state, the movement path (bending radius) of the folding screen 1 is greater than the movement path (bending radius) of the hinge mechanism 30. Therefore, in order to meet the bending requirements of the folding screen 1 of the outward-folding electronic device, the proportion of the bendable portion 13 of the folding screen 1 of the outward-folding electronic device is usually larger than that of the folding screen 1 of the inward-folding electronic device, or in other words, the width of the bendable portion 13 is larger in the width direction of the hinge mechanism 30.

[0108] In this regard, continue to refer to Figure 6 In order to stably support the bendable portion 13 of the folding screen 1, in this embodiment, the connection assembly 200 arranged on both sides of the main shaft 100 may also include an adapter plate 220. The adapter plates 220 on both sides of the main shaft 100 are respectively located between the connecting plate 210 and the main shaft 100 on the corresponding side, and the adapter plate 220 is movably connected between the main shaft 100 and the connecting plate 210. When the rotating shaft mechanism 30 supports the folding screen 1, the main shaft 100 and the adapter plates 220 on both sides of the main shaft 100 may correspond to the bendable portion 13 of the folding screen 1. In other words, the main shaft 100 and the adapter plates 220 on both sides of the main shaft 100 jointly support the bendable portion 13 of the folding screen 1. The connecting plates 210 located on the outside of the adapter plate 220 on both sides of the main shaft 100 can respectively correspond to the first non-bending portion 11 (the area close to the bendable portion 13) and the second non-bending portion 12 (the area close to the bendable portion 13), and the connecting plates 210 on both sides of the main shaft 100 respectively support the first non-bending portion 11 and the second non-bending portion 12.

[0109] Among them, the rotating plate can be fixed by relying on the moving part 300 that is movably connected between the main shaft 100 and the connecting plate 210. During the rotation of the rotating shaft mechanism 30, the moving part 300 drives the adapter plate 220 to rotate and translate relative to the main shaft 100. In addition, the movement trajectory of the adapter plate 220 is not limited by the connecting plate 210. The adapter plate 220 can change its posture as the shape of the bendable portion 13 of the folding screen 1 changes, so that the orientation of the adapter plate 220 always matches the bendable portion 13 of the folding screen 1. Regardless of the bending posture of the bendable portion 13 (for example, in the flattened state, the folded state, or in the process of converting between the two states), the adapter plate 220 can contact the corresponding area of ​​the bendable portion 13, and can support the corresponding area of ​​the bendable portion 13 stably.

[0110] As for the connection between the hinge mechanism 30 and the folding screen 1, in actual application, the main axis 100 of the hinge mechanism 30 usually corresponds to the central part of the bendable part 13 of the folding screen 1. When the bendable part 13 is in different postures, the position and shape of the central part of the bendable part 13 relative to the main axis 100 hardly change. Therefore, the central part of the bendable part 13 can be bonded to the main axis 100. The connecting plates 210 located on both sides of the main axis 100 and at the outermost side of the hinge mechanism 30 correspond to the first non-bending part 11 and the second non-bending part 12 of the folding screen 1 respectively. Therefore, the part of the folding screen 1 corresponding to the connecting plate 210 can also be bonded to the connecting plate 210. As for the adapter plate 220 located between the main shaft 100 and the connecting plate 210, since the adapter plate 220 corresponds to the part of the bendable portion 13 of the folding screen 1 that needs to be deformed, the adapter plate 220 and the folding screen 1 do not need to be connected. The adapter plate 220 only contacts the folding screen 1 and supports the bendable portion 13, and will not restrict the bending of the bendable portion 13.

[0111] By adding an adapter plate 220 between the main shaft 100 and the connecting plate 210, the space occupied by the entire hinge mechanism 30 is increased. The main shaft 100 and the adapter plate 220 jointly support the bendable portion 13 of the folding screen 1, and the contact area between the hinge mechanism 30 and the bendable portion 13 is increased. In addition, the adapter plate 220 can change its posture as the shape of the bendable portion 13 changes, which can ensure that the bendable portion 13 can be supported by the adapter plate 220 in any posture, which is equivalent to the adapter plate 220 can support the bendable portion 13 in any shape. In this way, the support strength of the hinge mechanism 30 for the bendable portion 13 of the folding screen 1 is enhanced, the force balance of the bendable portion 13 is improved, and it is ensured that the bendable portion 13 has sufficient strength and stability in any posture, which helps to improve the reliability of the bendable portion 13.

[0112] Of course, for an outward-folding electronic device with a smaller volume and a smaller width of the bendable portion 13 of the folding screen 1 (in the width direction of the hinge mechanism 30), or in other words, the movement path (bending radius) of the bendable portion 13 of the folding screen 1 of the outward-folding electronic device is shorter, the bendable portion 13 of the folding screen 1 may be supported by the main shaft 100 alone, and no additional adapter plates 220 are provided on both sides of the main shaft 100. For an outward-folding electronic device with a larger volume and a larger width of the bendable portion 13 of the folding screen 1 (in the width direction of the hinge mechanism 30), or in other words, the movement path (bending radius) of the bendable portion 13 of the folding screen 1 of the outward-folding electronic device is longer, adapter plates 220 need to be provided on both sides of the main shaft 100, and there is no limit on the number of adapter plates 220, and one or more adapter plates 220 may be provided according to actual needs.

[0113] Continue to refer to Figure 6As shown, when the hinge mechanism 30 is applied to an external folding electronic device, the damping component 500 connected between the main shaft 100 and the connecting component 200 may include a first damping component 500a and a second damping component 500b, wherein the first damping component 500a is mainly used to generate a damping force in the area where the main shaft 100 is located, and the second damping component 500b is mainly used to generate a damping force in the area where the connecting plate 210 is located. The first damping component 500a and the second damping component 500b cooperate with each other to provide a suitable damping force for the hinge mechanism 30 to ensure that the folding screen 1 can be quickly and smoothly flattened, improve the user's operating feel, and ensure the use effect of the foldable electronic device 1.

[0114] Under the coupling effect of the first damping component 500a and the second damping component 500b, the first damping component 500a can make up for the insufficient damping force of the second damping component 500b due to yielding during long-term use, and can provide sufficient damping force to ensure that the rotating shaft mechanism 30 is smoothly flattened without the intervention of external force, thereby ensuring the unfolding effect of the electronic device and improving the user experience. At the same time, the damping force of the second damping component 500b can also balance the damping force of the first damping component 500a, preventing the main shaft 100 from being pulled and affecting the flatness of the folding screen 1 in the unfolded state, preventing the rotating shaft mechanism 30 from being over-expanded, ensuring the flatness of the folding screen 1 in the unfolded state, and improving the stability of the shell component 2 in the unfolded state.

[0115] This embodiment does not limit the number of first damping components 500a and the position of the first damping components 500a, the number of second damping components 500b and the position of the second damping components 500b provided on the rotating shaft mechanism 30, and can be designed according to the volume of the rotating shaft mechanism 30 and the required damping force. It is best if the damping force provided by the first damping component 500a and the second damping component 500b can balance the overall force of the rotating shaft mechanism 30.

[0116] The damping component 500 of the rotating shaft mechanism 30 , specifically the first damping component 500 a that mainly generates a damping force in the area where the main shaft 100 is located, is described in detail below.

[0117] Figure 7 Schematic diagram of the structure of the damping component in the related art. Figure 7As shown, the damping assembly mostly adopts a spring and concave cam matching structure, and the damping assembly 4 includes a swing arm 41, a pin 42, a concave cam slider 43, a spring 44, a stopper 45, a plurality of friction plates 46 and a plurality of fixing plates 47. The pin 42 is inserted into the swing arm 41, and the concave cam slider 43, the spring 44, the stopper 45, each friction plate 46 and each fixing plate 47 are sleeved on the pin 42 and are restricted between the two ends of the swing arm 41. Among them, the concave cam slider 43 and the stopper 45 are respectively set against the two ends of the swing arm 41, and the concave cam slider 43 and the end of the swing arm 41 have matching concave-convex structures, the spring 44 is set close to the concave cam slider 43, and each friction plate 46 and each fixing plate 47 are sequentially overlapped and set against the spring 44 and the stopper 45.

[0118] During the movement of the rotating shaft mechanism, the pin shaft 42 rotates with the swing arm 41 relative to the main shaft, and the concave cam slider 43 does not rotate relative to the main shaft. Under the cooperation of the concave-convex structure between the swing arm 41 and the concave cam slider 43, the swing arm 41 pushes the concave cam slider 43 to move along the axial direction of the pin shaft 42, and the concave cam slider 43 squeezes the spring 44, thereby generating a variable damping force.

[0119] Figure 8 for Figure 7 Assembly flow chart of the damping assembly in . Figure 8 As shown, when assembling the damping assembly 4, first, the block 45, the friction plate 46, the fixing plate 47, the spring 44, and the concave cam slider 43 are sequentially mounted on the pin 42. Then, the spring 44 is compressed to the pre-compression length by using the pressure rod 5 on the fixture (the block 45 and the concave cam slider 43 may be provided with mounting holes, and the pressure rod 5 on the fixture is inserted into the block 45 and the concave cam slider 43 to compress the spring 44). After that, the pin 42 is pulled out, and the block 45, the friction plate 46, the fixing plate 47, the spring 44 and the concave cam slider 43 after pre-compression are put into the swing arm 41 as a whole. Finally, the pin 42 is inserted into the swing arm 41, so that the pin 42 passes through the block 45, the friction plate 46, the fixing plate 47, the spring 44 and the concave cam slider 43 in sequence (the reverse insertion is also possible).

[0120] Among them, due to the demand for damping force, the spring 44 needs to be pre-compressed to a certain length under the action of external force before it can be installed in the damping assembly 4. Therefore, the damping assembly 4 is a relatively difficult component to assemble in the rotating shaft mechanism. As the rotating shaft mechanism becomes thinner and lighter, and the spacing between moving parts becomes smaller and smaller, the assembly of the damping assembly 4 becomes more and more complicated. In addition, due to the constraints of the design space, the structural strength of the pressure rod 5 on the clamp is relatively small, and the pressure rod 5 is easy to break during the compression of the spring 44. In addition, the mounting holes on the friction plate 46 and the mounting holes at both ends of the swing arm 41 (used to install the pin 42) are flat holes instead of round holes, and the matching clearance between the pin 42 and the friction plate 46 and the swing arm 41 is small, which makes it difficult to install the pin 42 in the last step, and the installation efficiency of the damping assembly 4 is low.

[0121] In view of this, the embodiment of the present application improves the damping swing arm 510 of the damping assembly 500. The damping swing arm is configured to include a left swing arm and a right swing arm, and the left swing arm and the right swing arm are connected to form a damping swing arm. The left swing arm includes a left main body and a left stop sleeve, the left stop sleeve is located at the end of the left main body, and the other end of the left main body is provided with a left joint. The right swing arm includes a right main body and a right stop sleeve, the right stop sleeve is located at the end of the right main body, and the other end of the right main body is provided with a right joint. The left joint of the left swing arm and the right joint of the right swing arm are docked to connect to form a complete damping swing arm. When assembling the damping assembly, the left swing arm, the elastic member, the drive sleeve and the right swing arm and other components can be serially mounted on the pin shaft in sequence, and after the elastic member is compressed to the pre-stressed length, the left swing arm and the right swing arm are connected together. In this way, the assembly process of the damping assembly can be simplified, the reliability of the clamp can be enhanced, and the assembly efficiency of the damping assembly can be improved. Furthermore, the number of components of the damping assembly can be reduced, the damping assembly occupies less space, and the effective design space of the rotating shaft mechanism can be increased.

[0122] The damping assembly 500 and its assembly process according to the embodiment of the present application are described in detail below.

[0123] Fig. 9 A schematic diagram of the structure of the damping assembly provided in an embodiment of the present application. Fig.10 for Fig. 9 Exploded structure diagram of the damping components in .

[0124] Reference Fig. 9 or Fig.10As shown, the damping assembly 500 of the embodiment of the present application includes a damping swing arm 510, and the damping swing arm 510 includes a swing arm body 5101, a stopper sleeve 5102 and a rotating portion 5103. The swing arm body 5101 is the main supporting structure of the damping swing arm 510, and the swing arm body 5101 can extend along the length direction of the main shaft 100. The stopper sleeve 5102 is connected to both ends of the swing arm body 5101 in the length direction, and the stopper sleeve 5102 is located on the side of the swing arm body 5101 facing the main shaft 100. The rotating portion 5103 is connected to the swing arm body 5101, and the rotating portion 5103 is located on the side of the swing arm body 5101 facing the connecting assembly 200. Exemplarily, the stopper sleeve 5102 and the rotating portion 5103 can be integrally formed on the swing arm body 5101.

[0125] The stopper sleeve 5102 of the damping swing arm 510 can be located on the main shaft 100, and other components of the damping assembly 500 are installed between the stopper sleeves 5102 at both ends of the swing arm body 5101 to generate a damping force in the area where the main shaft 100 is located. The rotating portion 5103 of the damping swing arm 510 can be movably connected to the connecting assembly 200, for example, the rotating portion 5103 is movably connected to the connecting plate 210 to drive the damping assembly 500 to move through the connecting plate 210.

[0126] Among them, a damping groove (not shown in the figure) may be provided on the connecting plate 210, and the damping groove may correspond to the rotating part 5103 of the damping swing arm 510, and the rotating part 5103 is inserted in the damping groove and slides along the damping groove. One side of the rotating part 5103 may have a sliding protrusion 51031, and the other side of the rotating part 5103 may have a rotating protrusion 51032. The groove walls on both sides of the damping groove may have guide grooves, and the sliding protrusion 51031 of the rotating part 5103 slides along the corresponding guide groove, and the rotating protrusion 51032 of the rotating part 5103 slides and rotates along the corresponding guide groove. In this way, the rotating part 5103 is connected to the connecting plate 210 in a sliding and rotating manner, and the movement of the damping swing arm 510 is more stable and reliable, which can improve the movement accuracy of the damping assembly 500 and enhance the movement effect of the rotating shaft mechanism 30.

[0127] Exemplarily, the damping swing arm 510 may include two rotating parts 5103, and the two rotating parts 5103 are respectively arranged near the two ends of the length direction of the swing arm body 5101. Correspondingly, two damping grooves may be provided on the connecting plate 210, and the two rotating parts 5103 are respectively inserted into the two damping grooves. Such an arrangement increases the contact area between the damping swing arm 510 and the connecting plate 210, and the force balance of the damping swing arm 510 is good, and the motion trajectory accuracy of the damping swing arm 510 is high, which is conducive to improving the motion effect of the rotating shaft mechanism 30.

[0128] The following description is made by taking the damping swing arm 510 having two rotating parts 5103 as an example. For the convenience of description, the stop sleeves 5102 located at both ends of the swing arm body 5101 are respectively defined as the left stop sleeve 5112 and the right stop sleeve 5122, and the two rotating parts 5103 disposed near the two ends of the swing arm body 5101 are respectively defined as the left rotating part 5113 and the right rotating part 5123.

[0129] Continue to refer to Fig. 9 or Fig.10 The damping assembly 500 of the embodiment of the present application further includes a pin 520, a drive sleeve 530 and an elastic member 540. The left stop sleeve 5112 and the right stop sleeve 5122 of the damping swing arm 510 both have through holes (not shown in the figure), and the pin 520 passes through the through holes of the left stop sleeve 5112 and the right stop sleeve 5122, and is arranged between the left stop sleeve 5112 and the right stop sleeve 5122. In addition, the two ends of the pin 520 are respectively located on both sides of the left stop sleeve 5112 and the right stop sleeve 5122, and the damping assembly 500 can be connected to the main shaft 100 through the two ends of the pin 520. The drive sleeve 530 and the elastic member 540 are both sleeved on the pin 520, and the drive sleeve 530 and the elastic member 540 are restricted between the left stop sleeve 5112 and the right stop sleeve 5122. Exemplarily, the elastic member 540 may be a structural member such as a spring or an elastic sleeve sleeve that is sleeved on the pin 520 .

[0130] The driving sleeve 530 is arranged near the end of the damping swing arm 510, and the driving sleeve 530 abuts against the stop sleeve 5102 at the end of the damping swing arm 510. The elastic member 540 is located on the side of the driving sleeve 530 away from the end of the damping swing arm 510, or in other words, the elastic member 540 is located on the side of the driving sleeve 530 away from the stop sleeve 5102. In addition, the driving sleeve 530 and the stop sleeve 5102 of the damping swing arm 510 are provided with mutually matching concave-convex structures. During the rotation process of the damping swing arm 510, the driving sleeve 530 may not rotate relative to the main shaft 100. Since the stop sleeve 5102 of the damping swing arm 510 rotates around the main shaft 100, the stop sleeve 5102 rotates relative to the driving sleeve 530. Under the action of the concave-convex structure between the stop sleeve 5102 and the driving sleeve 530, the stop sleeve 5102 drives the driving sleeve 530 to move along the axial direction of the pin shaft 520. The driving sleeve 530 squeezes the elastic member 540 , and the compression amount of the elastic member 540 changes, so as to generate a changing damping force in the area where the main shaft 100 is located.

[0131] In some embodiments, a driving sleeve 530 is provided at one end of the pin shaft 520, and the driving sleeve 530 abuts against the stop sleeve 5102 at the corresponding end of the damping swing arm 510, and the elastic member 540 is located between the driving sleeve 530 and the stop sleeve 5102 at the other end of the damping swing arm 510. Relying on the concave-convex structure that cooperates with each other between the driving sleeve 530 and the corresponding stop sleeve 5102, the damping swing arm 510 drives the driving sleeve 530 to move, thereby compressing the elastic member 540. In other embodiments, driving sleeves 530 are provided at both ends of the pin shaft 520, and the two driving sleeves 530 abut against the stop sleeves 5102 at both ends of the damping swing arm 510, respectively, and the elastic member 540 is located between the two driving sleeves 530. The two driving sleeves 530 and the corresponding stop sleeves 5102 have mutually matching concave-convex structures, and the damping swing arm 510 drives the two driving sleeves 530 to move at the same time to compress the elastic member 540 between the two driving sleeves 530 .

[0132] Continue to refer to Fig. 9 or Fig.10 When only one end of the pin shaft 520 is sleeved with the driving sleeve 530, and the driving sleeve 530 only cooperates with the stop sleeve 5102 at one end of the damping swing arm 510, the pin shaft 520 may also be sleeved with a friction pair 550, and the friction pair 550 may be arranged between the elastic member 540 and the stop sleeve 5102 at the other end of the damping swing arm 510. By sleeved with the friction pair 550 on the pin shaft 520, during the rotation process of the damping swing arm 510, the friction pair 550 generates a damping force due to friction, which can increase the damping force of the damping assembly 500, enhance the damping effect of the damping assembly 500, and improve the stability of the movement of the rotating shaft mechanism 30 and the use effect of the electronic device.

[0133] The friction pair 550 may include a plurality of friction plates 551 and a plurality of fixed plates 552, the friction plates 551 and the fixed plates 552 are alternately stacked in sequence, and the friction plates 551 and the fixed plates 552 are sleeved on the pin 520 by opening a through hole. During the rotation of the damping swing arm 510, the fixed plate 552 can be fixed relative to the main shaft 100, while the friction plate 551 can rotate with the rotation of the pin 520. Friction force is generated between each two adjacent friction plates 551 and the fixed plate 552, thereby increasing the damping force of the damping assembly 500.

[0134] Exemplarily, the surface of the friction plate 551 may also be distributed with a plurality of grooves (not shown in the figure), and the grooves may be arranged at intervals along the circumference of the friction plate 551. Lubricating oil may be filled in the grooves to enhance the lubricity between the friction plate 551 and the fixed plate 552, and ensure that the friction plate 551 can rotate flexibly and smoothly relative to the fixed plate 552. This avoids excessive friction between the friction plate 551 and the fixed plate 552, which may cause the pin 520 to get stuck and fail to rotate smoothly, or the friction plate 551 or the fixed plate 552 to deform or even break and fail, thereby ensuring the reliability and service life of the damping assembly 500.

[0135] In order to enable the damping swing arm 510 to drive the pin 520 to rotate synchronously with it, the damping swing arm 510 and the pin 520 can adopt a foolproof matching method. For example, the pin 520 is a flat shaft instead of a round shaft, and the mounting hole opened on the stop sleeve 5102 of the damping swing arm 510 can also be a flat hole instead of a round hole to match it. On this basis, the through hole on the friction plate 551 can also be a flat hole matching the pin 520 instead of a round hole, and the through hole on the fixing plate 552 can be a round hole, and the fixing plates 552 sleeved on the pin 520 on both sides of the width direction of the main shaft 100 can also be connected as a whole. Thereby, the friction plate 551 can rotate with the pin 520, and the fixing plate 552 is fixed relative to the main shaft 100, so that friction is generated between the friction plate 551 and the fixing plate 552.

[0136] Fig.11 for Fig. 9 Schematic diagram of the structure of the damping swing arm of the damping assembly in FIG. Fig.11 As shown, Fig.11 (a) shows the overall structure of the damping swing arm 510. Fig.11 (b) of FIG. 5 shows the structure of the damping swing arm 510 in the disassembled state. In the damping assembly 500 of this embodiment, the damping swing arm 510 may include an independently formed left swing arm 511 and a right swing arm 512 (eg, Fig.11 As shown in (b) in FIG. 1 ), the left swing arm 511 and the right swing arm 512 are connected to each other to form a damping swing arm 510 (as shown in FIG. Fig.11 ).

[0137] The left swing arm 511 may include a left main body 5111, a left stop sleeve 5112 and a left rotating portion 5113. The left stop sleeve 5112 is connected to one end of the left main body 5111, and the left stop sleeve 5112 is located on the side of the left main body 5111 facing the main shaft 100. The left rotating portion 5113 is connected to the side of the left main body 5111 facing the connecting assembly 200, and the left rotating portion 5113 may be close to the end where the left stop sleeve 5112 is located. Similarly, the right swing arm 512 may include a right main body 5121, a right stop sleeve 5122 and a right rotating portion 5123. The right stop sleeve 5122 is connected to one end of the right main body 5121, and the right stop sleeve 5122 is located on the side of the right main body 5121 facing the main shaft 100. The right rotating portion 5123 is connected to the side of the right main body 5121 facing the connecting assembly 200, and the right rotating portion 5123 can be close to the end where the right stop sleeve 5122 is located. In addition, the left main body 5111 is provided with a left joint portion 5114 at the other end opposite to the left stop sleeve 5112, and the right main body 5121 is provided with a right joint portion 5124 at the other end opposite to the right stop sleeve 5122.

[0138] When the left swing arm 511 and the right swing arm 512 are butted, the left stopper sleeve 5112 may be located at one end of the left body 5111 away from the right swing arm 512, and the right stopper sleeve 5122 may be located at one end of the right body 5121 away from the left swing arm 511. The left joint portion 5114 of the left body 5111 and the right joint portion 5124 of the right body 5121 are opposite to each other, and the left joint portion 5114 of the left body 5111 and the right joint portion 5124 of the right body 5121 are mutually attached in the thickness direction of the damping swing arm 510. The left joint portion 5114 of the left body 5111 and the right joint portion 5124 of the right body 5121 are mutually connected to connect the left swing arm 511 and the right swing arm 512 together to assemble and form the damping swing arm 510.

[0139] Fig.12 This is an assembly flow chart of the damping assembly provided in the embodiment of the present application. Fig.12 As shown, by disassembling the damping swing arm 510 in the length direction of the damping swing arm 510, the damping swing arm 510 is separated into independent left swing arm 511 and right swing arm 512. In the process of assembling the damping assembly 500, the left swing arm 511, the friction pair 550, the elastic member 540, the drive sleeve 530 and the right swing arm 512 can be sequentially mounted on the pin 520, and after the elastic member 540 is compressed to the pre-compression length, the left swing arm 511 and the right swing arm 512 are connected together.

[0140] Among them, refer to Fig.12As shown in (a), taking the left swing arm 511 as the basic positioning structure, a limiting portion 521 can be provided at the left end of the pin shaft 520, and the left swing arm 511, the friction pair 550, the elastic member 540, the drive sleeve 530 and the right swing arm 512 can be sequentially mounted on the pin shaft 520 from the right end of the pin shaft 520. At this time, the left stop sleeve 5112 of the left swing arm 511 abuts against the limiting portion 521 at the left end of the pin shaft 520, and the right swing arm 512 can move along the axial direction of the pin shaft 520, and the right joint portion 5124 of the right swing arm 512 and the left joint portion 5114 of the left swing arm 511 are staggered. Fig.12 As shown in (b), after the components of the damping assembly 500 are sequentially mounted on the pin 520, the left end of the pin 520 is fixed to the fixture, and the elastic member 540 is compressed to the pre-stressed length by the force F applied by the fixture. At this time, the right swing arm 512 moves toward the left swing arm 511, and the right joint 5124 of the right swing arm 512 overlaps with the left joint 5114 of the left swing arm 511. Fig.12 As shown in (c), after the elastic member 540 is compressed to the pre-compression length, the right swing arm 512 is positioned at the current position so that the right joint portion 5124 of the right swing arm 512 is completely fitted with the left joint portion 5114 of the left swing arm 511, and the right joint portion 5124 is connected with the left joint portion 5114, and the right swing arm 512 and the left swing arm 511 are assembled to form the damping swing arm 510. At the same time, the damping assembly 500 is assembled.

[0141] It should be noted that when the left swing arm 511 is used as the basic positioning structure, since the left swing arm 511, the friction pair 550, the elastic member 540, the drive sleeve 530 and the right swing arm 512 need to be sequentially mounted on the pin shaft 520 from the right end of the pin shaft 520, the right end of the pin shaft 520 should be a free end that does not restrict the movement of these components. In order to position the right swing arm 512, a slot 522 may be provided at the right end of the pin shaft 520, and a retaining spring 523 may also be provided on the pin shaft 520 (see Fig.10 The clamping spring 523 is clamped in the clamping slot 522, so that the right stop sleeve 5122 of the right swing arm 512 abuts against the clamping spring 523, so as to position the right swing arm 512, so that the right joint portion 5124 of the right swing arm 512 is completely fitted with the left joint portion 5114 of the left swing arm 511.

[0142] That is to say, the opening position of the slot 522 can be designed according to the position of the right stop sleeve 5122 of the right swing arm 512 on the pin shaft 520, and the left side wall of the slot 522 can correspond to the end surface of the right stop sleeve 5122. In this way, when the right stop sleeve 5122 abuts against the retaining spring 523 in the slot 522, the right joint portion 5124 of the right swing arm 512 is exactly in full contact with the left joint portion 5114 of the left swing arm 511.

[0143] Of course, in other embodiments, the right swing arm 512 can also be used as a basic positioning structure. In this case, a limiting portion 521 can be provided at the right end of the pin 520, and a slot 522 can be provided at the left end of the pin 520. After the right swing arm 512, the drive sleeve 530, the elastic member 540, the friction pair 550 and the left swing arm 511 are sequentially mounted from the left end of the pin 520 to the pin 520, the elastic member 540 is compressed to a pre-compression length by a clamp. Afterwards, the retaining spring 523 is inserted into the slot 522 at the left end of the pin 520 to position the left swing arm 511 so that the left joint portion 5114 of the left swing arm 511 is completely fitted with the right joint portion 5124 of the right swing arm 512. Finally, the left joint portion 5114 of the left swing arm 511 and the right joint portion 5124 of the right swing arm 512 are connected together.

[0144] Alternatively, a slot 522 may be provided at both the left and right ends of the pin shaft 520, and a retaining spring 523 may be inserted into the slot 522 at one end of the pin shaft 520 in advance, and the retaining spring 523 at this end of the pin shaft 520 is equivalent to the limiter 521. Then, the left swing arm 511, the friction pair 550, the elastic member 540, the drive sleeve 530 and the right swing arm 512 are sequentially mounted on the pin shaft 520, and the elastic member 540 is compressed to the pre-compression length by a clamp. Afterwards, the retaining spring 523 is inserted into the slot 522 at the other end of the pin shaft 520, and finally the left joint 5114 of the left swing arm 511 and the right joint 5124 of the right swing arm 512 are connected together.

[0145] With such arrangement, when assembling the damping assembly 500, the left swing arm 511, the elastic member 540, the drive sleeve 530 and the right swing arm 512 and other components are sequentially inserted into the pin 520 all at once, and there is no need to repeatedly pass through the pin 520, thereby simplifying the assembly process of the damping assembly 500. The problem of the inability to align components (especially components with flat holes) caused by passing through the pin 520 twice can be avoided, thereby ensuring the assembly accuracy of the damping assembly 500 and improving the assembly efficiency of the damping assembly 500. Furthermore, since the damping can be directly used as the force-applying structure, the clamp can eliminate the pressure rod 5, which can enhance the reliability of the clamp and improve the reliability of the assembly of the damping assembly 500. In addition, since the clamp does not need to be provided with the pressure rod 5, there is no need to provide a block as the installation basis of the pressure rod 5 (see Figure 8 ), the components of the damping assembly 500 are reduced, and the damping assembly 500 occupies less space in the length direction of the main shaft 100, which can reserve more installation space for other components of the rotating shaft mechanism 30, thereby increasing the effective design space of the rotating shaft mechanism 30.

[0146] Fig.13 A schematic structural diagram of a damping swing arm provided in an embodiment of the present application. Fig.14 A schematic structural diagram of another damping swing arm provided in an embodiment of the present application. Fig.15A schematic structural diagram of a third damping swing arm provided in an embodiment of the present application.

[0147] Reference Figures 13 to 15 As shown in any one, for the convenience of explanation, in this embodiment, after the left joint portion 5114 of the left swing arm 511 and the right joint portion 5124 of the right swing arm 512 are attached and connected to each other, the corresponding part on the swing arm body 5101 of the damping swing arm 510 is defined as the joint part of the left joint portion 5114 and the right joint portion 5124, which is also the joint part of the left swing arm 511 and the right swing arm 512. In other words, the joint part of the left swing arm 511 and the right swing arm 512 is the connection part of the left swing arm 511 and the right swing arm 512.

[0148] In this embodiment, the left joint portion 5114 on the left swing arm 511 can extend to both sides of the width direction of the left main body 5111, and matching therewith, the right joint portion 5124 on the right swing arm 512 can extend to both sides of the width direction of the right main body 5121. In other words, the left joint portion 5114 occupies the entire area of ​​the width direction of the left main body 5111, and the right joint portion 5124 occupies the entire area of ​​the width direction of the right main body 5121. In this way, the fitting area of ​​the left joint portion 5114 and the right joint portion 5124 is large, and the connection strength of the left joint portion 5114 and the right joint portion 5124 can be enhanced. This is conducive to avoiding the dislocation of the damping swing arm 510 during the movement, improving the stability and reliability of the damping swing arm 510, and ensuring the service life of the damping assembly 500.

[0149] Furthermore, the two side surfaces of the joint of the left swing arm 511 and the right swing arm 512 can be flush with the two side surfaces of the left main body 5111 and the right main body 5121. In other words, after the left joint portion 5114 of the left swing arm 511 and the right joint portion 5124 of the right swing arm 512 are connected, the overall thickness of the left joint portion 5114 and the right joint portion 5124 is consistent with the thickness of other parts of the swing arm main body 5101. In this way, the thickness of the swing arm main body 5101 of the damping swing arm 510 is uniform, the two side surfaces are kept flat, and the force of the damping swing arm 510 is balanced, which is conducive to improving the structural strength and appearance of the damping swing arm 510.

[0150] Reference Fig.13 and Fig.14 As shown, in some embodiments, the left joint portion 5114 of the left body 5111 may be located on one side of the thickness direction of the damping swing arm 510, and the right joint portion 5124 of the right body 5121 may be located on the other side of the thickness direction of the damping swing arm 510, and the left joint portion 5114 and the right joint portion 5124 are respectively located on both sides of the thickness direction of the damping swing arm 510. In this way, when assembling the damping swing arm 510, it is convenient to dock the left swing arm 511 and the right swing arm 512, so as to improve the assembly efficiency of the damping swing arm 510.

[0151] Among them, refer to Fig.13 As shown, as an embodiment, in the width direction of the swing arm body 5101, the end surface of the left joint portion 5114 (towards one end of the right body 5121) of the left body 5111 can extend along a straight line, or in other words, the end surface of the left joint portion 5114 facing the right body 5121 can be a plane. Similarly, in the width direction of the swing arm body 5101, the end surface of the right joint portion 5124 (towards one end of the left body 5111) of the right body 5121 can extend along a straight line, or in other words, the end surface of the right joint portion 5124 facing the left body 5111 can be a plane. In this way, when the left swing arm 511 and the right swing arm 512 are docked, the left joint portion 5114 and the right joint portion 5124 have a large degree of freedom of movement, which facilitates the assembly of the damping swing arm 510.

[0152] Reference Fig.14 As shown, as another embodiment, the end surface of the left joint portion 5114 of the left body 5111 facing the right body 5121 may be a plane, and the end surface of the right joint portion 5124 of the right body 5121 facing the left body 5111 may be a non-plane. Alternatively, the end surface of the left joint portion 5114 of the left body 5111 facing the right body 5121 is a non-plane, and the end surface of the right joint portion 5124 of the right body 5121 facing the left body 5111 may be a plane. Alternatively, the end surface of the left joint portion 5114 of the left body 5111 facing the right body 5121 is a non-plane, and the end surface of the right joint portion 5124 of the right body 5121 facing the left body 5111 is also a non-plane.

[0153] In this configuration, since at least one of the end surface of the left joint portion 5114 and the end surface of the right joint portion 5124 is non-planar, when the left swing arm 511 and the right swing arm 512 are butted, the butt joint between the left swing arm 511 and the right swing arm 512 with the non-planar surface and the other is a non-straight seam (curved seam). In the width direction of the swing arm body 5101, the relative movement of the left swing arm 511 and the right swing arm 512 can be restricted, the butt joint accuracy of the left swing arm 511 and the right swing arm 512 is improved, the connection reliability of the left swing arm 511 and the right swing arm 512 is enhanced, the shear resistance of the damping swing arm 510 is improved, and the service life of the damping swing arm 510 is extended.

[0154] As an example, when the end surface of the left joint portion 5114 of the left body 5111 facing the right body 5121 is non-planar, along the width direction of the left body 5111, the end surface of the left joint portion 5114 facing the right body 5121 may include a first section 51141, a second section 51142 and a third section 51143 connected in sequence, and the extension direction of the second section 51142 may be inclined to the width direction of the left body 5111. In this way, when the left swing arm 511 is docked with the right swing arm 512, the second section 51142 on the end surface of the left joint portion 5114 cooperates with the right joint portion 5124 to limit the relative movement of the left swing arm 511 and the right swing arm 512 in the width direction of the swing arm body 5101, thereby improving the docking accuracy of the left swing arm 511 and the right swing arm 512.

[0155] The first section 51141 and the third section 51143 on the end surface of the left joint 5114 may extend in the width direction of the left main body 5111, while the second section 51142 on the end surface of the left joint 5114 may extend in the length direction of the left main body 5111. In this way, after the left swing arm 511 and the right swing arm 512 are butt-jointed to form the damping swing arm 510, the force generated between the left joint 5114 and the right joint 5124 may be transmitted along the length direction and the width direction of the swing arm main body 5101, so that the damping swing arm 510 is subjected to a more balanced force as a whole and has a better reliability.

[0156] Similarly, when the end surface of the right joint 5124 of the right body 5121 facing the left body 5111 is non-planar, along the width direction of the right body 5121, the end surface of the right joint 5124 facing the left body 5111 may include a first section 51241, a second section 51242 and a third section 51243 connected in sequence, and the extension direction of the second section 51242 may be inclined to the width direction of the right body 5121. In this way, when the right swing arm 512 is docked with the left swing arm 511, the second section 51242 on the end surface of the right joint 5124 cooperates with the left joint 5114 to limit the relative movement of the right swing arm 512 and the left swing arm 511 in the width direction of the swing arm body 5101, thereby improving the docking accuracy of the right swing arm 512 and the left swing arm 511.

[0157] The first section 51241 and the third section 51243 on the end surface of the right joint 5124 may extend in the width direction of the right body 5121, while the second section 51242 on the end surface of the right joint 5124 may extend in the length direction of the right body 5121. In this way, after the right swing arm 512 and the left swing arm 511 are butted together to form the damping swing arm 510, the force generated between the right joint 5124 and the left joint 5114 may be transmitted along the length direction and the width direction of the swing arm body 5101, so that the damping swing arm 510 is subjected to a more balanced force as a whole and has a better reliability.

[0158] Reference Fig.15 As shown, in other embodiments, the left joint portion 5114 of the left main body 5111 may occupy both sides of the thickness direction of the left main body 5111, and matching therewith, the right joint portion 5124 of the right main body 5121 may also occupy both sides of the thickness direction of the right main body 5121. In this way, the left joint portion 5114 and the right joint portion 5124 are alternately arranged on the same side of the thickness direction of the swing arm main body 5101. The left joint portion 5114 and the right joint portion 5124 resist each other, which can enhance the connection reliability of the left swing arm 511 and the right swing arm 512, enhance the anti-torsion performance of the damping swing arm 510, avoid the dislocation of the damping swing arm 510 during the movement, and improve the reliability and service life of the damping swing arm 510.

[0159] For ease of description, the two sides of the swing arm body 5101 in the present embodiment in the thickness direction are defined as the first side and the second side, respectively. Correspondingly, the two sides of the left body 5111 in the thickness direction are defined as the first side and the second side, respectively, and the two sides of the right body 5121 in the thickness direction are defined as the first side and the second side, respectively.

[0160] Exemplarily, along the width direction of the left main body 5111, the left joint portion 5114 may include a left upper portion 51144 and a left lower portion 51145, wherein the left upper portion 51144 is located on a first side in the thickness direction of the left main body 5111, and the left lower portion 51145 is located on a second side in the thickness direction of the left main body 5111. Matchingly, along the width direction of the right main body 5121, the right joint portion 5124 may include a right upper portion 51244 and a right lower portion 51245, wherein the right upper portion 51244 is located on the second side in the thickness direction of the right main body 5121, and the right lower portion 51245 is located on the first side in the thickness direction of the right main body 5121.

[0161] When the left joint portion 5114 and the right joint portion 5124 are butted, in the thickness direction of the damping swing arm 510, the upper left portion 51144 of the left joint portion 5114 fits with the upper right portion 51244 of the right joint portion 5124, and the lower left portion 51145 of the left joint portion 5114 fits with the lower right portion 51245 of the right joint portion 5124. In the width direction of the swing arm body 5101 of the damping swing arm 510, the upper left portion 51144 of the left joint portion 5114 and the lower right portion 51245 of the right joint portion 5124 abut against each other, and the upper right portion 51244 of the right joint portion 5124 and the lower left portion 51145 of the left joint portion 5114 abut against each other. In the thickness direction of the damping swing arm 510 and the width direction of the swing arm body 5101 , the left joint portion 5114 and the right joint portion 5124 resist each other to enhance the anti-torsion performance of the damping swing arm 510 .

[0162] Among them, the abutting surface between the upper left portion 51144 of the left joint portion 5114 and the lower right portion 51245 of the right joint portion 5124 can extend along the length direction of the swing arm body 5101 of the damping swing arm 510. Correspondingly, the abutting surface between the upper right portion 51244 of the right joint portion 5124 and the lower left portion 51145 of the left joint portion 5114 can extend along the length direction of the damping swing arm 510. In this way, the acting forces between the left joint portion 5114 and the right joint portion 5124 are balanced with each other, the overall force of the damping swing arm 510 is more balanced, and the reliability of the damping swing arm 510 is better.

[0163] Fig.16 A schematic diagram of the disassembly positions of a damping swing arm provided in an embodiment of the present application. Fig.17 A schematic diagram of another disassembly position of the damping swing arm provided in an embodiment of the present application.

[0164] As for the disassembly position (separation position) of the damping swing arm 510, refer to Fig.16 As shown, as an embodiment, the damping swing arm 510 can be disassembled in the middle of the length direction to separate the left swing arm 511 and the right swing arm 512. At this time, the extension length of the left main body 5111 of the left swing arm 511 and the extension length of the right main body 5121 of the right swing arm 512 can be the same, and the joint part of the left joint part 5114 and the right joint part 5124 is located in the middle of the length direction of the swing arm body 5101. The center line of the joint part of the left joint part 5114 and the right joint part 5124 can coincide with the center line of the damping swing arm 510.

[0165] With such a configuration, the left swing arm 511 and the right swing arm 512 both have sufficient extension lengths, and both have sufficient force arms, so that the left swing arm 511 and the right swing arm 512 can transmit the force in a balanced manner. Thus, the damping swing arm 510 has good balance and high reliability, which is conducive to extending the service life of the damping swing arm 510.

[0166] Reference Fig.17 As shown, as another embodiment, on the basis of ensuring the stability and reliability of the damping swing arm 510, the disassembly position of the damping swing arm 510 can also deviate from the middle part of the length direction of the damping swing arm 510. At this time, the extension length of the left main body 5111 of the left swing arm 511 and the extension length of the right main body 5121 of the right swing arm 512 can be different, and the joint part of the left joint part 5114 and the right joint part 5124 can deviate from the middle part of the length direction of the swing arm body 5101. The center line of the joint part of the left joint part 5114 and the right joint part 5124 may not coincide with the center line of the damping swing arm 510.

[0167] Understandably, Fig.17In the example, the disassembly position of the damping swing arm 510 is biased to the left. In this case, the extension length of the left body 5111 of the left swing arm 511 can be less than the extension length of the right body 5121 of the right swing arm 512. In other examples, the disassembly position of the damping assembly 500 can also be biased to the right. In this case, the extension length of the right body 5121 of the right swing arm 512 can be less than the extension length of the left body 5111 of the left swing arm 511.

[0168] Fig.18 A schematic diagram of a connection form of the damping swing arm provided in an embodiment of the present application. Fig.19 A schematic diagram of another connection form of the damping swing arm provided in an embodiment of the present application.

[0169] As for the connection method of the left swing arm 511 and the right swing arm 512, refer to Fig.18 and Fig.19 As shown, the left swing arm 511 and the right swing arm 512 can be connected by welding. A weld is formed between the left joint portion 5114 of the left main body 5111 and the right joint portion 5124 of the right main body 5121 to weld the left joint portion 5114 and the right joint portion 5124 together. Thus, the left swing arm 511 and the right swing arm 512 are connected together to assemble to form the damping swing arm 510.

[0170] Among them, refer to Fig.18 As shown, as an embodiment, the left joint portion 5114 of the left swing arm 511 and the right joint portion 5124 of the right swing arm 512 can be connected by penetration welding. At this time, the left joint portion 5114 and the right joint portion 5124 can have a penetration weld 51011. As the name implies, the penetration weld 51011 can penetrate the thickness direction of the left joint portion 5114 and the right joint portion 5124 to connect the left joint portion 5114 and the right joint portion 5124 together.

[0171] Reference Fig.19 As shown, as another embodiment, the left joint portion 5114 of the left swing arm 511 and the right joint portion 5124 of the right swing arm 512 can also be connected by splicing or welding. In this case, the left joint portion 5114 and the right joint portion 5124 can have a splicing weld 51012. As the name implies, the splicing weld 51012 is formed by welding the edges of the left joint portion 5114 and the right joint portion 5124 together to form a weld extending along the splicing seam of the left joint portion 5114 and the right joint portion 5124.

[0172] Of course, in other embodiments, the left swing arm 511 and the right swing arm 512 can be connected by two welding processes, namely, penetration welding and butt welding. In this case, the left joint 5114 and the right joint 5124 have both penetration welds 51011 and butt welds 51012.

[0173] On the basis of ensuring the stability and reliability of the connection between the left swing arm 511 and the right swing arm 512, the left joint 5114 of the left swing arm 511 and the right joint 5124 of the right swing arm 512 can also be connected by bonding or using fasteners such as screws and rivets.

[0174] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0175] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. A damping swing arm, characterized in that: include: The left swing arm comprises a left main body and a left stop sleeve, wherein the left stop sleeve is connected to one end of the left main body, and the other end of the left main body is provided with a left joint portion; The right swing arm comprises a right main body and a right stop sleeve, wherein the right stop sleeve is connected to one end of the right main body, and the other end of the right main body is provided with a right joint portion; Wherein, the left connecting portion and the right connecting portion are fitted and connected along the thickness direction of the damping swing arm.

2. The damping swing arm according to claim 1, characterized in that: Along the width direction of the left main body, the left connecting portion extends to both sides of the left main body; along the width direction of the right main body, the right main body extends to both sides of the right main body.

3. The damping swing arm according to claim 1, characterized in that: The two side surfaces of the joint portion between the left connecting portion and the right connecting portion are flush with the two side surfaces of the left main body and the right main body.

4. The damping swing arm according to any one of claims 1 to 3, characterized in that: The left joint portion and the right joint portion are respectively located on both sides of the damping swing arm in a thickness direction.

5. The damping swing arm according to claim 4, characterized in that: The end surface of the left connecting portion facing the right main body is a plane, and the end surface of the right connecting portion facing the left main body is a plane.

6. The damping swing arm according to claim 4, characterized in that: At least one of an end surface of the left connecting portion facing the right main body and an end surface of the right connecting portion facing the left main body is a non-planar surface.

7. The damping swing arm according to claim 6, characterized in that: Along the width direction of the left main body, the end surface of the left joint portion facing the right main body includes a first section, a second section and a third section connected in sequence, and the extension direction of the second section is inclined to the width direction of the left main body; And / or, along the width direction of the right main body, the end surface of the right connecting portion facing the left main body includes a first section, a second section and a third section connected in sequence, and an extension direction of the second section is inclined to the width direction of the right main body.

8. The damping swing arm according to claim 7, characterized in that: The first section of the left joint portion and the third section of the left joint portion extend in the width direction of the left main body, and the second section of the left joint portion extends in the length direction of the left main body; And / or, the first section of the right connecting portion and the third section of the right connecting portion extend in the width direction of the right main body, and the second section of the right connecting portion extends in the length direction of the right main body.

9. The damping swing arm according to any one of claims 1 to 3, characterized in that: Along the width direction of the left main body, the left combining portion includes a left upper portion and a left lower portion, the left upper portion is located on a first side in the thickness direction of the left main body, and the left lower portion is located on a second side in the thickness direction of the left main body; Along the width direction of the right main body, the right combining portion includes a right upper portion and a right lower portion, the right upper portion is located at the second side in the thickness direction of the right main body, and the right lower portion is located at the first side in the thickness direction of the right main body; Among them, along the thickness direction of the damping swing arm, the upper left part and the upper right part are fitted and connected, and the lower left part and the lower right part are fitted and connected; along the width direction of the damping swing arm, the upper left part and the lower right part abut against each other, and the upper right part and the lower left part abut against each other.

10. The damping swing arm according to claim 9, characterized in that: The extending direction of the abutting surface between the upper left portion and the lower right portion is the length direction of the damping swing arm, and the extending direction of the abutting surface between the upper right portion and the lower left portion is the length direction of the damping swing arm.

11. The damping swing arm according to any one of claims 1 to 3, characterized in that: The extension length of the left main body is the same as the extension length of the right main body, and the center line of the joint portion between the left connecting part and the right connecting part coincides with the center line of the damping swing arm.

12. The damping swing arm according to any one of claims 1 to 3, characterized in that: The extension length of the left main body is different from the extension length of the right main body, and the center line of the joint portion of the left connecting part and the right connecting part does not coincide with the center line of the damping swing arm.

13. The damping swing arm according to any one of claims 1 to 3, characterized in that: The left joint portion and the right joint portion have a through weld; Alternatively, the left joint portion and the right joint portion have a splicing weld; Alternatively, the left joint portion and the right joint portion have penetration welds and butt welds.

14. The damping swing arm according to any one of claims 1 to 3, characterized in that: The left swing arm further includes a left rotating part, and the left rotating part and the left stop sleeve are respectively located on both sides of the left main body; the right swing arm further includes a right rotating part, and the right rotating part and the right stop sleeve are respectively located on both sides of the right main body.

15. A damping assembly, characterized in that: include: The damping swing arm according to any one of claims 1 to 14; A pin shaft is passed through the damping swing arm, and two ends of the pin shaft pass through a left stop sleeve and a right stop sleeve respectively; At least one driving sleeve is sleeved on the pin shaft, and at least one of the left stop sleeve and the right stop sleeve abuts against the driving sleeve; and the left stop sleeve and the right stop sleeve abutting against the driving sleeve are provided with a concave-convex structure matching with the driving sleeve; The elastic member is sleeved on the pin shaft and is located on a side of the end of the driving sleeve away from the damping swing arm.

16. The damping assembly according to claim 15, characterized in that The number of the driving sleeve is one, and the damping assembly further includes: The friction pair is sleeved on the pin shaft and located on the side of the elastic member away from the driving sleeve; wherein the friction pair includes friction plates and fixed plates alternately stacked.

17. The damping assembly according to claim 16, characterized in that A plurality of grooves are distributed on the surface of the friction plate, and the grooves are filled with lubricant.

18. The damping assembly according to any one of claims 15 to 17, characterized in that: At least one end of the pin shaft is provided with a clamping groove, a clamping spring is arranged in the clamping groove, and at least one of the left stop sleeve and the right stop sleeve abuts against the clamping spring.

19. A rotating shaft mechanism, characterized in that: include: Spindle; A connecting assembly, movably connected to both sides of the main shaft in the width direction; The damping assembly according to any one of claims 15 to 18 is movably connected between the main shaft and the connecting assembly.

20. An electronic device, characterized in that: It comprises a first housing, a second housing, a folding screen and the hinge mechanism according to claim 19; The first shell and the second shell are respectively connected to two sides of the hinge mechanism, the folding screen is attached to the first shell and the second shell, and the folding screen is supported by the hinge mechanism.

Images