Preparation method of rotating shaft mechanism, rotating shaft mechanism and electronic equipment

Abstract

According to the preparation method of the rotating shaft mechanism, the rotating shaft mechanism and the electronic equipment, in the rotating shaft mechanism, at least two structural parts are integrally formed through the 3D printing technology under the same 3D printing procedure, the at least two structural parts can be assembled without adopting an assembling procedure, the assembling procedure of the rotating shaft mechanism can be greatly reduced, and the assembling efficiency of the rotating shaft mechanism is improved. The assembly difficulty of the rotating shaft mechanism is reduced, and the production efficiency of the rotating shaft mechanism is improved.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a method for preparing a rotating shaft mechanism, the rotating shaft mechanism, and an electronic device. Background Technology

[0002] With the advancement of technology, the era of large-screen smart terminals has arrived, and foldable electronic devices are highly favored by users due to their advantages such as large screens and portability. Currently, foldable electronic devices often use hinge mechanisms to achieve folding and unfolding. However, hinge mechanisms typically include numerous components such as hinge covers, brackets, and swing arms. The large number of components increases the complexity and difficulty of the assembly process, reducing the production efficiency of the hinge mechanism. Summary of the Invention

[0003] This application provides a method for preparing a rotating shaft mechanism, the rotating shaft mechanism itself, and an electronic device, which reduces the complexity and difficulty of the assembly process of the rotating shaft mechanism and improves the production efficiency of the rotating shaft mechanism.

[0004] In a first aspect, this application provides a method for manufacturing a rotating shaft mechanism, comprising:

[0005] An assembly is formed by 3D printing. The assembly includes at least two structural parts and at least one connecting material, which is connected between the at least two structural parts.

[0006] After removing excess material from the connection, at least two structural components can move relative to each other.

[0007] In the manufacturing method of the pivot mechanism shown in this application, at least two structural components are integrally formed by 3D printing technology in the same 3D printing process. Assembly of the at least two structural components can be achieved without an assembly process, which greatly reduces the assembly steps of the pivot mechanism, lowers the assembly difficulty, and helps improve the production efficiency of the pivot mechanism. Furthermore, since at least two structural components can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. Without fasteners and limiting components occupying space in the X-axis and Z-axis directions, the space occupied by the pivot mechanism is reduced, which helps to achieve a thinner and lighter design of the pivot mechanism.

[0008] In one embodiment, in the step of printing the assembly using 3D printing, at least two structural components have connecting surfaces that connect with connecting scrap, and the connecting surfaces are perpendicular to the 3D printing direction of the assembly.

[0009] Since the connecting surfaces of the structural components are all perpendicular to the 3D printing direction of the assembly, the connecting material will not be blocked by the structural components during the removal of connecting material. This allows for the effective and clean removal of connecting material, enabling the structural components connected by the connecting material to separate, which can effectively improve the manufacturing efficiency of the rotating shaft mechanism.

[0010] Secondly, this application provides a rotating shaft mechanism, which is prepared by any of the rotating shaft mechanism preparation methods described above.

[0011] In the pivot mechanism shown in this application, at least two structural components are integrally formed using 3D printing technology in the same 3D printing process. Assembly between these components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the pivot mechanism, thus improving its production efficiency. Furthermore, since the two structural components can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes of the pivot mechanism reduces its space requirements, contributing to a thinner and lighter design.

[0012] Thirdly, this application provides a rotating shaft mechanism, which includes at least two structural members that can move relative to each other, wherein the at least two structural members are printed in the same 3D printing process.

[0013] In the pivot mechanism shown in this application, at least two structural components are integrally formed using 3D printing technology in the same 3D printing process. Assembly between these components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the pivot mechanism, thus improving its production efficiency. Furthermore, since the two structural components can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes of the pivot mechanism reduces its space requirements, contributing to a thinner and lighter design.

[0014] In one embodiment, at least one structural component has a first stepped surface, a second stepped surface, and a first supporting surface. The second stepped surface is located on one side of the first stepped surface along the 3D printing direction of the structural component and on one side of the first stepped surface along the thickness direction of the assembly, and is spaced apart from the first stepped surface. The first supporting surface is connected between the first stepped surface and the second stepped surface. Along the printing direction of the assembly, the distance between the first supporting surface and the first stepped surface gradually increases in the printing direction of the assembly to support the 3D printed material and ensure the structural stability of the 3D printed structural component.

[0015] In one embodiment, the first support surface is an inclined surface, and the angle between the first support surface and the first step surface is an obtuse angle, so as to support the 3D printed material and ensure the structural stability of the 3D printed structural component.

[0016] In one embodiment, at least one structural component has a third step surface, a fourth step surface, and a second support surface. The fourth step surface is located on one side of the third step surface along the 3D printing direction of the structural component and on one side of the third step surface along the width direction of the assembly, and is spaced apart from the third step surface. The second support surface connects the third step surface and the fourth step surface. Along the printing direction of the assembly, the distance between the second support surface and the third step surface in the width direction of the assembly gradually increases to support the 3D printed material and ensure the structural stability of the 3D printed structural component.

[0017] In one embodiment, the second support surface is an inclined surface, and the angle between the second support surface and the third step surface is an obtuse angle, so as to support the 3D printed material and ensure the structural stability of the 3D printed structural component.

[0018] In one embodiment, at least two structural components include a base and a first swing arm, the first swing arm being rotatable relative to the base.

[0019] The base and the first swing arm are integrally formed using 3D printing technology in the same 3D printing process. Assembly between the base and the first swing arm is unnecessary, significantly reducing the assembly steps and difficulty of the pivot mechanism and improving its production efficiency. Furthermore, the integral molding of the base and the first swing arm in the same process eliminates the need for additional fasteners or positioning devices. The absence of fasteners and positioning devices occupying space in the X and Z axes of the pivot mechanism reduces its space requirements, contributing to a thinner and lighter design.

[0020] In one embodiment, the base is provided with a first rotating groove, the opening of which is located on the top surface of the base. The first rotating groove has a first groove sidewall and a second groove sidewall, which are spaced apart along the 3D printing direction of the base. The first and second groove sidewalls are perpendicular to the 3D printing direction of the base.

[0021] The first swing arm includes a first rotating part located in a first rotating groove. The first rotating part has a first side and a second side. The first side faces the side wall of the first groove and is spaced apart from the side wall of the first groove. The second side is opposite to the first side and is spaced apart from the side wall of the second groove. Both the first and second side walls of the groove are perpendicular to the 3D printing direction of the first swing arm.

[0022] During the 3D printing process of the base and the first swing arm, the first swing arm unfolds relative to the base, and the connecting material is connected between the first groove sidewall and the first side, as well as between the second groove sidewall and the second side, so as to facilitate the subsequent removal of the connecting material and effectively improve the manufacturing efficiency of the rotating shaft mechanism.

[0023] In one embodiment, the first swing arm is provided with a limiting hole that extends through the first swing arm along its thickness direction. The base is provided with a first limiting block, at least a portion of which passes through the limiting hole. The bottom surface of the first swing arm abuts against the base to prevent further rotation of the first swing arm relative to the base when the first swing arm is unfolded relative to the base, thereby ensuring the stability of the first swing arm when unfolded relative to the base.

[0024] In one embodiment, at least two structural components further include a second swing arm, which is deployed relative to the base and is rotatable relative to the base.

[0025] The base, first swing arm, and second swing arm are integrally formed using 3D printing technology in the same 3D printing process. Assembly between the base and the first swing arm, as well as between the base and the second swing arm, is possible without additional assembly steps. This significantly reduces the assembly steps and difficulty of the rotating mechanism, thus improving its production efficiency. Furthermore, the integral molding of the base, first swing arm, and second swing arm in the same process eliminates the need for additional fasteners or positioning devices. The absence of fasteners and positioning devices occupying space in the X and Z axes of the rotating mechanism reduces its space requirements, contributing to a thinner and lighter design.

[0026] In one embodiment, the base includes a shaft cover and a support portion, with the support portion fixedly connected to the shaft cover. That is, the shaft cover, the support portion, and the first swing arm are integrally formed using 3D printing technology in the same 3D printing process.

[0027] In one embodiment, at least two structural components include a first damping bracket and a first damping swing arm. Along the 3D printing direction of the structural components, the first damping swing arm is located on one side of the first damping bracket and is spaced apart from the first damping bracket. The first damping swing arm can rotate relative to the first damping bracket.

[0028] The first damping bracket and the first damping swing arm are integrally formed by 3D printing technology in the same 3D printing process. The first damping bracket and the first damping swing arm can be assembled without the need for an assembly process, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0029] In one embodiment, at least two structural components further include a second damping swing arm, which is located on the same side of the first damping bracket as the first damping swing arm and is spaced apart from the first damping swing arm. The second damping swing arm is rotatable relative to the first damping bracket.

[0030] The first damping bracket, the first damping swing arm, and the second damping swing arm are integrally formed by 3D printing technology in the same 3D printing process. The first damping bracket, the first damping swing arm, and the second damping swing arm can be assembled without the need for an assembly process, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0031] In one embodiment, at least two structural components further include a synchronization component connected between the first damping swing arm and the second damping swing arm, both of which can rotate relative to the synchronization component.

[0032] The first damping bracket, the first damping swing arm, and the synchronization component are integrally formed by 3D printing technology in the same 3D printing process. The first damping bracket, the first damping swing arm, and the synchronization component can be assembled without the need for assembly processes, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0033] In one embodiment, at least two structural components include all the parts in the rotating shaft mechanism except for the shaft cover portion. The rotating shaft mechanism also includes a shaft cover portion, and at least two structural components are mounted on the shaft cover portion. The shaft cover portion can be formed using 3D printing technology.

[0034] In this rotating mechanism, all components except the shaft cover are integrally formed using 3D printing technology in the same 3D printing process. Assembly of these components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the rotating mechanism, thus improving production efficiency. Furthermore, since all components except the shaft cover can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes reduces the space required for the rotating mechanism, contributing to a thinner and lighter design.

[0035] In one embodiment, at least two structural components include all parts of the pivot mechanism. That is, the entire pivot mechanism is integrally formed using 3D printing technology in the same 3D printing process. Assembly of the components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the pivot mechanism, thus improving production efficiency. Furthermore, since all parts of the pivot mechanism can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes reduces the space required for the pivot mechanism, contributing to a thinner and lighter design.

[0036] In one embodiment, at least two structural components include a first swing arm, a second swing arm, and a first fixed frame. The first swing arm and the third swing arm are spaced apart. The first swing arm can rotate relative to the first fixed frame, and the third swing arm can slide relative to the first fixed frame.

[0037] The first swing arm, the second swing arm, and the first fixed frame are integrally formed by 3D printing technology in the same 3D printing process. The first swing arm, the second swing arm, and the first fixed frame can be assembled without the need for an assembly process, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0038] In one embodiment, at least two structural components include a first damping shaft and a first damping swing arm; the pivot mechanism further includes a first elastic element, which is sleeved on the first damping shaft.

[0039] In one embodiment, at least two structural components include a synchronous slide shaft and a synchronous slider, the synchronous slider being slidable relative to the synchronous slide shaft.

[0040] Synchronous slide shafts and synchronous sliders are integrally formed using 3D printing technology in the same 3D printing process. The synchronous slide shafts and synchronous sliders can be assembled without the need for assembly processes, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0041] In one embodiment, at least two structural components include a first auxiliary swing arm and a second auxiliary swing arm. The first auxiliary swing arm is provided with a first helical groove. The second auxiliary swing arm is spaced apart from and opposite to the first auxiliary swing arm. The second auxiliary swing arm is provided with a second helical groove. The second helical groove is spaced apart from and opposite to the first helical groove. A synchronous slider is installed in the first helical groove and the second helical groove.

[0042] The synchronous slider is provided with a first spiral protrusion and a second spiral protrusion. The first spiral protrusion is fitted into the first spiral groove, and the second spiral protrusion is fitted into the second spiral groove.

[0043] It should be noted that the design of the first and second spiral protrusions on the synchronous slider is not conducive to the demolding of the synchronous slider. In this embodiment, the synchronous slider is 3D printed, which can solve the problem of the synchronous slider being unable to be demolded and can effectively improve the production efficiency of the rotating shaft mechanism 130.

[0044] In one embodiment, at least two structural components include a first door panel swing arm and a first door panel, wherein the first door panel swing arm is slidable and rotatable relative to the first door panel.

[0045] The first door panel swing arm and the first door panel are integrally formed by 3D printing technology in the same 3D printing process. The first door panel swing arm and the first door panel can be assembled without the need for an assembly process, which can greatly reduce the assembly process of the pivot mechanism, reduce the assembly difficulty of the pivot mechanism, and help improve the production efficiency of the pivot mechanism.

[0046] In one embodiment, at least two structural components include a base, a first fixing frame, and a first door panel. The first fixing frame is located on one side of the base, and the first door panel rotatably connects the base and the first fixing frame. The first door panel may be a "24-door panel".

[0047] The base, the first fixing frame, and the first door panel are integrally formed by 3D printing technology in the same 3D printing process. The base, the first fixing frame, and the first door panel can be assembled without the need for assembly processes, which can greatly reduce the assembly process of the rotating shaft mechanism, reduce the assembly difficulty of the rotating shaft mechanism, and help improve the production efficiency of the rotating shaft mechanism.

[0048] In one embodiment, the pivot mechanism further includes a first door panel, which is formed by 3D printing to simplify the manufacturing process of the first door panel and improve the manufacturing accuracy of the first door panel.

[0049] In one embodiment, the rotating shaft mechanism further includes an outer film disposed on the outer surface of the base. The outer film can be formed by 3D printing.

[0050] Understandably, the outer film can be formed in different 3D printing processes with the base, which not only allows for customization of the outer film according to individual needs, but also facilitates timely replacement when the outer film is damaged.

[0051] In one embodiment, at least one structural member has an energy-absorbing layer on its outer surface. The energy-absorbing layer has a microstructure inside or on its surface, and can absorb energy deformation to buffer the external forces borne by the rotating shaft mechanism. The energy-absorbing layer may be located on a base or support.

[0052] Fourthly, this application also provides an electronic device, including a first housing, a second housing, and any of the aforementioned pivot mechanisms, wherein the pivot mechanism is connected between the first housing and the second housing.

[0053] In the electronic device shown in this application, the at least two structural components of the hinge mechanism are integrally formed using 3D printing technology in the same 3D printing process. Assembly of the at least two structural components can be achieved without an assembly process, significantly reducing the assembly steps and difficulty of the hinge mechanism and improving its production efficiency. Furthermore, since the at least two structural components can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes of the hinge mechanism reduces its space requirements, contributing to a thinner and lighter design for both the hinge mechanism and the electronic device. Attached Figure Description

[0054] To more clearly illustrate the technical solution of this application, the accompanying drawings used in this application will be described below.

[0055] Figure 1 This is a schematic diagram of the electronic device provided in this application in a folded state;

[0056] Figure 2 yes Figure 1 A schematic diagram of the electronic device in its deployed state;

[0057] Figure 3 yes Figure 1 A schematic diagram of the rotating shaft mechanism of the electronic device in the shown electronic equipment;

[0058] Figure 4 yes Figure 2 A schematic diagram of the rotating shaft mechanism of the electronic device in the shown electronic equipment;

[0059] Figure 5 yes Figure 4 The exploded structural diagram of the rotating shaft mechanism shown;

[0060] Figure 6a and Figure 6b yes Figure 5 A partial structural diagram of the base in the base assembly shown;

[0061] Figure 7 yes Figure 5 A schematic diagram of the structure of the first swing arm in the connecting assembly shown;

[0062] Figure 8 yes Figure 7 The diagram shows the structure of the first swing arm at another angle.

[0063] Figure 9 yes Figure 3 A partial structural schematic diagram of the rotating shaft mechanism shown;

[0064] Figure 10 yes Figure 4 A partial structural schematic diagram of the rotating shaft mechanism shown;

[0065] Figure 11 yes Figure 9 A schematic diagram of the cross-sectional structure of the rotating shaft mechanism shown, cut along point II.

[0066] Figure 12 yes Figure 5 The diagram shows the structure of the damping component and the synchronization component.

[0067] Figure 13 This is a process flow diagram of the manufacturing method of the rotating shaft mechanism provided in this application;

[0068] Figure 14 yes Figure 13 A schematic diagram of the assembly in the manufacturing method of the rotating shaft mechanism shown;

[0069] Figure 15 yes Figure 14 The diagram shows the structure of the assembly after removing the excess material from the connections. Detailed Implementation

[0070] The technical solutions in this application will now be clearly and completely described with reference to the accompanying drawings.

[0071] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the electronic device 1000 provided in this application in a folded state. Figure 2 yes Figure 1 The diagram shows the structure of the electronic device 1000 in its unfolded state.

[0072] The electronic device 1000 can be a foldable electronic product such as a mobile phone, tablet computer, personal computer, multimedia player, e-book reader, laptop computer, in-vehicle device, or wearable device. In this embodiment, the electronic device 1000 is a foldable mobile phone. That is, the electronic device 1000 is a mobile phone that can switch between a folded state and an unfolded state.

[0073] For ease of description, the following definitions are provided. Figure 1 The width direction of the electronic device 1000 is the X-axis direction, the length direction is the Y-axis direction, and the thickness direction is the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are all perpendicular to each other. For example, the extension direction of the rotation axis of the electronic device 1000 is parallel to the Y-axis direction. That is, the electronic device 1000 can be relatively unfolded or folded around the Y-axis direction.

[0074] It should be noted that the terms "parallel" and "perpendicular" used in the embodiments of this application to describe relative positional relationships are relative to the current technological level, and not absolute or strict definitions in a mathematical sense. Slight deviations are permissible; approximations of parallelism and perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0075] in, Figure 1 The electronic device 1000 shown is in a folded state. At this time, the electronic device 1000 has a smaller dimension along the X-axis, making it easy to carry. Figure 2 The electronic device 1000 shown is in an unfolded state. For example, Figure 2 The unfolding angle α of the electronic device 1000 shown is 180 degrees. In other words, Figure 1 The electronic device 1000 shown is in a flattened state. At this time, the electronic device 1000 has a larger dimension along the X-axis, and has a larger display area.

[0076] It should be noted that slight deviations are allowed in the angles illustrated in the embodiments of this application. For example, Figure 2 The unfolding angle α of the electronic device 1000 shown is 180 degrees, meaning that α can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated in the following text can be understood in the same way.

[0077] It should be understood that the electronic device 1000 shown in the embodiments of this application is a terminal capable of folding once. In some other embodiments, the electronic device 1000 may also be a terminal capable of folding multiple times (more than twice). In this case, the electronic device 1000 may include multiple parts, and two adjacent parts may be folded relatively close to each other until the electronic device 1000 is in a folded state, and two adjacent parts may also be unfolded relatively away from each other until the electronic device 1000 is in an unfolded state.

[0078] Electronic device 1000 includes an electronic device 100 and a display module 200, with the display module 200 mounted on the electronic device 100. The display module 200 includes a display surface 201 facing away from the electronic device 100, used to display information such as text, images, or video. In this embodiment, the display module 200 includes a first display portion 210, a second display portion 220, and a foldable portion 230, connected between the first display portion 210 and the second display portion 220. The foldable portion 230 is bendable about the Y-axis.

[0079] like Figure 1 As shown, when the electronic device 1000 is in a folded state, both the electronic device 100 and the display module 200 are folded, the first display portion 210 and the second display portion 220 are arranged opposite to each other, and the foldable portion 230 is bent. At this time, the exposed area of ​​the display module 200 is relatively small, which can greatly reduce the probability of the display module 200 being damaged and achieve effective protection for the display module 200.

[0080] like Figure 2 As shown, when the electronic device 1000 is in a flattened state, both the electronic device 100 and the display module 200 are flattened, with the first display portion 210 and the second display portion 220 relatively flattened, and the foldable portion 230 flattened without bending. At this time, the included angles between the first display portion 210 and the second display portion 220, between the first display portion 210 and the foldable portion 230, and between the second display portion 220 and the foldable portion 230 are all α. The display module 200 has a large display area, enabling a large-screen display for the electronic device 1000 and improving the user experience.

[0081] It should be understood that the electronic device 1000 shown in this embodiment is folded inwards, and when the electronic device 1000 is in the folded state, the display module 200 is located inside the electronic device 100. In some other embodiments, the electronic device 1000 may also be folded outwards, and when the electronic device 1000 is in the folded state, the display module 200 is located outside the electronic device 100.

[0082] The electronic device 100 includes a first housing 110, a second housing 120, and a pivot mechanism 130. The pivot mechanism 130 is connected between the first housing 110 and the second housing 120 to achieve a rotatable connection between them. Specifically, the first housing 110 carries a first display portion 210, and the second housing 120 carries a second display portion 220. In other words, the first display portion 210 is mounted on the first housing 110, and the second display portion 220 is mounted on the second housing 120. The pivot mechanism 130 is disposed opposite to the foldable portion 230.

[0083] The first housing 110 and the second housing 120 can rotate relative to each other via the pivot mechanism 130, allowing the electronic device 100 to switch between a folded state and an unfolded state. Specifically, the first housing 110 and the second housing 120 can rotate relative to each other to be positioned opposite each other, so that the electronic device 100 is in a folded state, such as... Figure 1As shown. At this time, the rotating shaft mechanism 130 is in a folded state. The first housing 110 and the second housing 120 can also rotate relative to each other to flatten them out, so that the electronic device 1000 is in a flattened state, as shown. Figure 2 As shown. At this time, the included angle between the first housing 110 and the second housing 120 is α, and the rotating shaft mechanism 130 is in a flattened state.

[0084] Currently, foldable electronic devices often use hinge mechanisms to achieve folding and unfolding. However, existing hinge mechanisms typically include numerous components such as hinge covers, brackets, and swing arms. The large number of components leads to complex assembly processes and high assembly difficulty, significantly reducing the production efficiency of hinge mechanisms. Moreover, many components are manufactured separately, requiring not only fasteners such as screws or nuts for assembly but also limiting components such as stop blocks to prevent the swing arm from excessively rotating and dislodging. Screws or nuts occupy space in the X-axis and Z-axis directions of the hinge mechanism, while stop blocks occupy space in the X-axis direction, resulting in excessive space occupation of the hinge mechanism, which is detrimental to the thin and light design of the hinge mechanism and electronic devices.

[0085] Next, the structure of the rotating shaft mechanism 130 of the electronic device 1000 in the electronic device 1000 shown in the embodiments of this application will be described.

[0086] Please see Figures 3 to 5 , Figure 3 yes Figure 1 A schematic diagram of the rotating shaft mechanism 130 of the electronic device 1000 shown in the electronic device 1000 is provided. Figure 4 yes Figure 2 A schematic diagram of the rotating shaft mechanism 130 of the electronic device 1000 shown in the electronic device 1000 is provided. Figure 5 yes Figure 4 The exploded structural diagram of the rotating shaft mechanism 130 shown.

[0087] The pivot mechanism 130 includes a base assembly 10, a connecting assembly 20, a damping assembly 30, a synchronization assembly 40, and a door panel assembly 50. The connecting assembly 20, damping assembly 30, and synchronization assembly 40 are all mounted on the base assembly 10. The connecting assembly 20 is rotatably connected to the base assembly 10 and can be folded or unfolded relative to the base assembly 10. The damping assembly 30 is connected to the connecting assembly 20 and can be folded or unfolded relative to the base assembly 10 under the influence of the connecting assembly 20. The synchronization assembly 40 is connected to the damping assembly 30. The door panel assembly 50 is slidably and rotatably connected to the connecting assembly 20 and can be folded or unfolded relative to the base assembly 10 under the influence of the connecting assembly 20.

[0088] When the pivot mechanism 130 is in the folded state, the connecting assembly 20, the damping assembly 30, and the door panel assembly 50 are all in the folded state. When the pivot mechanism 130 is in the unfolded state, the connecting assembly 20, the damping assembly 30, and the door panel assembly 50 are all in the unfolded state. During the process of the pivot mechanism 130 switching from the folded state to the unfolded state, the connecting assembly 20, the damping assembly 30, and the door panel assembly 50 all switch from the folded state to the unfolded state. During the process of the pivot mechanism 130 switching from the unfolded state to the folded state, the connecting assembly 20, the damping assembly 30, and the door panel assembly 50 all switch from the unfolded state to the folded state.

[0089] The base assembly 10 has its length direction parallel to the Y-axis. The base assembly 10 includes a base 11, a bracket 12, and a fastener 13. The base 11 has its length direction parallel to the Y-axis. The bracket 12 is fixedly mounted on the base 11. The fastener 13 is fixedly connected between the base 11 and the bracket 12 to securely mount the bracket 12 to the base 11. Exemplarily, there are three brackets 12 and three fasteners 13. Along the length direction of the base 11, the three brackets 12 are arranged at intervals, and each fastener 13 is fixedly connected between the base 11 and one bracket 12. The fastener 13 can be a screw or nut, or other parts that provide a fixing function. In other embodiments, there may be two or fewer, or four or more, brackets 12 and fasteners 13; this application does not impose specific limitations on this.

[0090] The connecting component 20 is rotatably connected to the base 11. Exemplarily, there are three connecting components 20, arranged sequentially at intervals along the length of the base component 10, with each connecting component 20 rotatably connected to a first bracket 12. In other embodiments, there may be two or fewer, or four or more connecting components 20; this application does not impose specific limitations on this.

[0091] It should be noted that the three connecting components 20 can be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the three connecting components 20, the connection relationship between the components, and the connection relationship between the components and other components can all refer to the relevant design of the connecting components 20 below, but the detailed structure or positional arrangement of the components can be different.

[0092] The connecting assembly 20 includes a first fixed frame 21, a second fixed frame 22, a first swing arm 23, a second swing arm 24, a first rotating shaft 25, and a second rotating shaft 26. The first fixed frame 21 is located on one side of the base 11 and is fixedly connected to the first housing 110. The second fixed frame 22 is located on one side of the base 11 and is fixedly connected to the second housing 120. When the rotating shaft mechanism 130 is in the unfolded state, the first fixed frame 21 is located on one side of the base 11 and spaced apart from it, and the second fixed frame 22 is located on the other side of the base 11 and spaced apart from it. For example, the first fixed frame 21 is located on the left side of the base 11, and the second fixed frame 22 is located on the right side of the base 11. The first swing arm 23 is rotatably connected to the base 11 and rotatably connected to the first fixed frame 21. That is, the first swing arm 23 can rotate relative to the base 11 and the first fixed frame 21. The second swing arm 24 is rotatably connected to the base 11 and rotatably connected to the second fixed frame 22. That is, the second swing arm 24 can rotate relative to the base 11 and the second fixed frame 22.

[0093] It should be noted that the directional terms such as "top," "bottom," "left," "right," "front," and "rear" used in the description of the electronic device 1000 in this application are mainly based on the orientation of the electronic device 1000 shown in the accompanying drawings. "Top" refers to the positive Z-axis direction, "bottom" refers to the negative Z-axis direction, "right" refers to the positive X-axis direction, "left" refers to the negative X-axis direction, "rear" refers to the positive Y-axis direction, and "front" refers to the negative Y-axis direction. These terms do not constitute a limitation on the orientation of the electronic device 1000 in actual application scenarios.

[0094] The first swing arm 23 is rotatably connected to the first fixed frame 21 via the first rotating shaft 25, and the second swing arm 24 is rotatably connected to the second fixed frame 22 via the second rotating shaft 26. It should be understood that the first swing arm 23 may also be rotatably connected to the first fixed frame 21 in other ways, and / or the second swing arm 24 may also be rotatably connected to the second fixed frame 22 in other ways; this application does not impose specific limitations on this.

[0095] When the connecting assembly 20 switches between a folded state and an unfolded state, the first fixing frame 21 and the first swing arm 23 rotate relative to the base 11 in a first direction, and the second fixing frame 22 and the second swing arm 24 rotate relative to the base 11 in a second direction, which is opposite to the first direction. For example, when the connecting assembly 20 switches from a folded state to an unfolded state, the first fixing frame 21 and the first swing arm 23 rotate counterclockwise relative to the base 11, and the second fixing frame 22 and the second swing arm 24 rotate clockwise relative to the base 11. When the connecting assembly 20 switches from an unfolded state to a folded state, the first fixing frame 21 and the first swing arm 23 rotate clockwise relative to the base 11, and the second fixing frame 22 and the second swing arm 24 rotate counterclockwise relative to the base 11.

[0096] In this embodiment, the first fixing frame 21 of the three connecting components 20 are independent structural members, and the second fixing frame 22 of the three connecting components 20 can also be independent structural members. In other embodiments, the first fixing frame 21 of the three connecting components 20 can be multiple parts of a single integrated structural member, and / or, the second fixing frame 22 of the three connecting components 20 can be multiple parts of a single integrated structural member.

[0097] The damping assembly 30 is mounted on the base 11 and is also slidably connected to the first fixing frame 21 and the second fixing frame 22. When the connecting assembly 20 switches between a folded state and an unfolded state, the damping assembly 30 provides damping force to improve the user's handling feel. Exemplarily, there are three damping assemblies 30, arranged sequentially at intervals along the length of the base assembly 10, each damping assembly 30 being slidably connected to the first fixing frame 21 and the second fixing frame 22 of a connecting assembly 20. In other embodiments, there may be two or fewer, or four or more, damping assemblies 30; this application does not impose specific limitations on this.

[0098] It should be noted that the three damping components 30 can be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the three damping components 30, the connection relationship between the components, and the connection relationship between the components and other components can all refer to the relevant design of the damping components 30 below, but the detailed structure or positional arrangement of the components can be different.

[0099] Synchronization component 40 is mounted on base 11. Synchronization component 40 drives the first fixed frame 21 and the second fixed frame 22 to rotate synchronously relative to the base, and the first swing arm 23 and the second swing arm 24 to rotate synchronously relative to base 11, thereby ensuring the synchronous rotation of the first housing 110 and the second housing 120 and improving the user experience. Exemplarily, there are two synchronization components 40, arranged sequentially at intervals along the length of base component 10, with each synchronization component 40 connected to a damping component 30. In other embodiments, there may be one or more synchronization components 40; this application does not impose specific limitations on this.

[0100] It should be noted that the two synchronization components 40 can be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the two synchronization components 40, the connection relationship between the components, and the connection relationship between the components and other components can all refer to the relevant design of the synchronization component 40 below, but the detailed structure or positional arrangement of the components can be different.

[0101] The door panel assembly 50 is slidably and rotatably connected to the first fixing frame 21 and the second fixing frame 22. The door panel assembly 50 includes a first door panel 51 and a second door panel 52. The first door panel 51 and the first fixing frame 21 are located on the same side of the base 11 and are slidably and rotatably connected to the first fixing frame 21. The second door panel 52 and the second fixing frame 22 are located on the same side of the base 11 and are slidably and rotatably connected to the second fixing frame 22. When the pivot mechanism 130 is in the unfolded state, the first door panel 51 is located on the left side of the base 11, and the second door panel 52 is located on the right side of the base 11.

[0102] In this embodiment, the rotating shaft mechanism 130 includes at least two structural components 131, which are printed in the same 3D printing process. That is, at least two structural components 131 are integrally formed using 3D printing technology. The at least two structural components 131 are capable of relative movement. Exemplary 3D printing technologies include, but are not limited to, direct metal laser-sintering (DMLS), selective laser melting (SLM), or electron beam melting (EBM).

[0103] In the pivot mechanism 130 shown in this embodiment, at least two structural components 131 are integrally formed using 3D printing technology. Assembly of these components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the pivot mechanism 130, and improving its production efficiency. Furthermore, since the at least two structural components 131 can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes of the pivot mechanism 130 reduces its space requirements, contributing to a thinner and lighter design for both the pivot mechanism 130 and the electronic device 1000.

[0104] It should be noted that structural component 131 can be any component of the pivot mechanism 130. For example, structural component 131 can be a component of the base 11, the connecting assembly 20, the damping assembly 30, the synchronization assembly 40, or the door panel assembly 50. This application does not impose specific limitations on this. Next, different embodiments of the pivot mechanism 130 will be described in detail.

[0105] In the first embodiment, the rotating shaft mechanism 130 comprises three structural components 131 integrally formed using 3D printing technology. One structural component 131 is the base 11, another is the first swing arm 23, and the third is the second swing arm 24. That is, the base 11, the first swing arm 23, and the second swing arm 24 are integrally formed using 3D printing technology. For example, the 3D printing direction of the base 11, the first swing arm 23, and the second swing arm 24 is the negative Y-axis direction.

[0106] It should be understood that in some other embodiments, the rotating shaft mechanism 130 may have only two structural components 131 integrally formed by 3D printing technology. For example, one structural component 131 may be the base 11, and the other structural component 131 may be the first swing arm 23 or the second swing arm 24. Alternatively, the rotating shaft mechanism 130 may have four or more structural components 131 integrally formed by 3D printing technology. This application does not impose any specific restrictions on this.

[0107] It should be noted that in the rotating shaft mechanism 130 shown in this embodiment, there are multiple connecting components 20. The assembly relationship between the first swing arm 23 and the second swing arm 24 and the base 11 in each connecting component 20 can be referred to the description below, and will not be repeated hereafter.

[0108] Please see Figure 6a and Figure 6b , Figure 6a and Figure 6b yes Figure 5 A partial structural diagram of the base 11 in the base assembly 10 shown.

[0109] The base 11 is provided with a first rotating groove 111 and a second rotating groove 112. The opening of the first rotating groove 111 and the opening of the second rotating groove 112 are both located on the top surface 11a of the base 11. The first rotating groove 111 and the second rotating groove 112 are both recessed from the top surface 11a of the base 11 towards the bottom surface (not shown in the figure) (the negative direction of the Z-axis in the figure).

[0110] The first rotating groove 111 is located on the left side of the base 11 and extends through the left side surface of the base 11 (not shown in the figure). The first rotating groove 111 includes a first groove bottom wall 1111, a first groove side wall 1112, a second groove side wall 1113, and a third groove side wall 1114. The first groove bottom wall 1111 is disposed opposite to the opening of the first rotating groove 111 and is located on the bottom side of the top surface 11a of the base 11. The first groove side wall 1112 is located on the rear side of the first groove bottom wall 1111 and connects the first groove bottom wall 1111 and the top surface 11a of the base 11. The first groove side wall 1112 is perpendicular to the 3D printing direction of the base 11. The second groove side wall 1113 and the third groove side wall 1114 are both located on the front side of the first groove bottom wall 1111 and are both connected between the first groove bottom wall 1111 and the top surface 11a of the base 11. The second groove sidewall 1113 is perpendicular to the 3D printing direction of the base 11. The third groove sidewall 1114 is located to the left of the second groove sidewall 1113 and is spaced apart from it. Along the 3D printing direction of the base 11, the distance between the third groove sidewall 1114 and the first groove bottom wall 1111 gradually increases along the 3D printing direction of the base 11. The third groove sidewall 1114 is an inclined surface, and the angle between the third groove sidewall 1114 and the first groove bottom wall 1111 is an obtuse angle. For example, the angle between the third groove sidewall 1114 and the first groove bottom wall 1111 is 135°.

[0111] The first rotating groove 111 may be an arc-shaped groove, with its central axis parallel to the Y-axis. That is, the bottom wall surface 1111 of the first groove may be an arc-shaped surface, with its central axis parallel to the Y-axis. In some other embodiments, the first rotating groove 111 may not penetrate the left side of the base 11.

[0112] In this embodiment, there are three first rotating grooves 111. The three first rotating grooves 111 are arranged sequentially at intervals along the length of the base 11. In other embodiments, there may be two or fewer, or four or more, first rotating grooves 111; this application does not impose specific limitations on this.

[0113] The second rotating groove 112 is located on the right side of the base 11 and extends through the right side surface of the base 11. Along the width direction of the base 11 (X-axis direction in the figure), the second rotating groove 112 is located on one side of the first rotating groove 111, and is spaced apart from and opposite to the first rotating groove 111. It should be noted that the structure of the second rotating groove 112 can be referred to the relevant description of the first rotating groove 111 above, and will not be repeated here.

[0114] The second rotating groove 112 may be an arc-shaped groove, with its central axis parallel to the Y-axis. That is, the bottom wall of the second rotating groove 112 may be an arc-shaped surface, with its central axis parallel to the Y-axis. In other embodiments, the second rotating groove 112 may not penetrate the right side of the base 11.

[0115] In this embodiment, there are three second rotating grooves 112. Along the length of the base 11, the three second rotating grooves 112 are arranged sequentially at intervals. Along the width of the base 11, each second rotating groove 112 is spaced apart from and opposite to a first rotating groove 111. In other embodiments, there may be two or fewer, or four or more, first rotating grooves 111; this application does not impose specific limitations on this.

[0116] The base 11 is also provided with a first limiting block 113 and a second limiting block 114. The first limiting block 113 is disposed on the bottom wall surface 1111 of the first groove and protrudes from the bottom wall surface 1111 towards the top surface 11a of the base 11 (positive Z-axis direction in the figure). Specifically, the first limiting block 113 is located between the first side wall surface 1112 and the second side wall surface 1113, and is spaced apart from both the first side wall surface 1112 and the second side wall surface 1113. The first limiting block 113 includes a first side surface 1131 and a second side surface 1132. The first side surface 1131 is located on the rear side of the first limiting block 113 and faces the first side wall surface 1112, and connects the bottom wall surface 1111 of the first groove and the top surface 1133 of the first limiting block 113. Along the 3D printing direction of the base 11, the distance between the first side surface 1131 and the first groove bottom wall surface 1111 gradually increases along the 3D printing direction of the base 11. The first side surface 1131 is an inclined surface, and the angle between the first side surface 1131 and the first groove bottom wall surface 1111 is an obtuse angle. For example, the angle between the first side surface 1131 and the first groove bottom wall surface 1111 is 135°.

[0117] The second side surface 1132 is located in front of the first limiting block 113 and is disposed opposite to the first side surface 1131, facing the second groove side wall 1113 and the third groove side wall 1114, and is also connected between the first groove bottom wall 1111 and the top surface 1133 of the first limiting block 113. The top surface 1133 of the first limiting block 113 is connected between the first side surface 1131 and the second side surface 1132. For example, the top surface 1133 of the first limiting block 113 is flush with the top surface 11a of the base 11.

[0118] Please see Figure 6b , Figure 6a yes Figure 5 A partial structural diagram of the base 11 in the base assembly 10 shown.

[0119] The first limiting block 113 is provided with a limiting groove 115, which is located between the first side surface 1131 and the second side surface 1132, and is spaced apart from both the first side surface 1131 and the second side surface 1132. Specifically, the opening of the limiting groove 115 is located on the top surface 1133 of the first limiting block 113. The limiting groove 115 is recessed from the top surface 1133 of the first limiting block 113 towards the bottom wall surface 1111 of the first groove (negative direction of the Z-axis in the figure). The limiting groove 115 includes a second bottom wall surface 1151, a fourth side wall surface 1152, and a fifth side wall surface 1153. The second bottom wall surface 1151 is disposed opposite to the opening of the limiting groove 115, and is located on the bottom side of the top surface 1133 of the first limiting block 113, and is spaced apart from the top surface 1133 of the first limiting block 113. The fourth groove sidewall 1152 is located behind the second groove bottom wall 1151 and connects the second groove bottom wall 1151 and the top surface 1133 of the first limiting block 113. The fifth groove sidewall 1153 is located in front of the second groove bottom wall 1151 and connects the second groove bottom wall 1151 and the top surface 1133 of the first limiting block 113. Along the 3D printing direction of the base 11, the distance between the fifth groove sidewall 1153 and the second groove bottom wall 1151 gradually increases along the 3D printing direction of the base 11. The fifth groove sidewall 1153 is an inclined surface, and the included angle between the fifth groove sidewall 1153 and the second groove bottom wall 1151 is an obtuse angle. For example, the included angle between the fifth groove sidewall 1153 and the second groove bottom wall 1151 is 135°.

[0120] The second limiting block 114 is disposed on the bottom wall surface of the second rotating groove 112 (not shown in the figure), and protrudes from the bottom wall surface of the second rotating groove 112 towards the top surface 11a of the base 11 (in the positive direction of the Z-axis shown in the figure). It should be noted that the structure of the second limiting block 114 and the fitting relationship between the second limiting block 114 and the second rotating groove 112 can be referred to the relevant descriptions of the structure of the first limiting block 113 and the fitting relationship between the first limiting block 113 and the first rotating groove 111 above, and will not be repeated here.

[0121] In this embodiment, at least one structural component 131 has a first stepped surface 1311, a second stepped surface 1312, and a first supporting surface 1313. The second stepped surface 1312 is located on one side of the first stepped surface 1311 along the 3D printing direction of the structural component 131, and is also located on one side of the first stepped surface 1311 along the thickness direction of the structural component 131, and is spaced apart from the first stepped surface 1311. The first supporting surface 1313 connects the first stepped surface 1311 and the second stepped surface 1312. Along the 3D printing direction of the structural component 131, the distance between the first supporting surface 1313 and the first stepped surface 1311 gradually increases in the 3D printing direction of the structural component 131.

[0122] In the first embodiment, the first step surface 1311 and the second step surface 1312 are arranged sequentially along the 3D printing direction of the structural component 131. That is, the second step surface 1312 is located behind the first step surface 1311. In other words, during the 3D printing process of the structural component 131, the first step surface 1311 is printed first, and then the second step surface 1312 is printed.

[0123] Please see Figure 6a The first step surface 1311 can be the top surface 11a of the base 11, the second step surface 1312 can be the bottom wall surface 1111 of the first groove, and the first support surface 1313 can be the side wall surface 1114 of the third groove. It should be noted that during the printing of the base 11 along the 3D printing direction, when printing from the top surface 11a of the base 11 to the bottom wall surface 1111 of the first rotating groove 111, due to the thickness difference between the two, the third side wall surface 1114 of the groove can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed base 11.

[0124] Furthermore, the first step surface 1311 can be the top surface 1133 of the first limiting block 113, the second step surface 1312 can be the bottom wall surface 1111 of the first groove, and the first support surface 1313 can be the first side surface 1131. It should be noted that during the printing of the base 11 along the 3D printing direction of the base 11, when printing from the top surface 1133 of the first limiting block 113 to the bottom wall surface 1111 of the first rotating groove 111, due to the thickness difference between the two, the first side surface 1131 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed base 11.

[0125] Please see Figure 6b The first step surface 1311 can be the top surface 1133 of the first limiting block 113, the second step surface 1312 can be the second groove bottom wall surface 1151 of the limiting groove 115, and the first support surface 1313 can be the fifth groove side wall surface 1153 of the limiting groove 115. It should be noted that during the printing of the base 11 along the 3D printing direction of the base 11, when printing from the top surface 1133 of the first limiting block 113 to the second groove bottom wall surface 1151 of the limiting groove 115, due to the thickness difference between the two, the fifth groove side wall surface 1153 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed base 11.

[0126] It should be understood that the second rotating groove 112 and the second limiting block 114 may also include the first step surface 1311, the second step surface 1312 and the first support surface 1313 mentioned above. For details, please refer to the relevant descriptions of the first rotating groove 111 and the first limiting block 113, which will not be described here.

[0127] Please see Figure 6bThe base 11 is also provided with a first protrusion 116, a second protrusion 117, a third protrusion 118, and a fourth protrusion 119. The first protrusion 116 is disposed on the side wall surface 1112 of the first groove and protrudes from the side wall surface 1112 of the first groove in the direction of the first limiting block 113 (positive Y-axis direction in the figure), and is spaced apart from the first limiting block 113. The first protrusion 116 has a third side surface 1161, which is the surface of the first protrusion 116 facing the first limiting block 113, and is disposed opposite to the first side surface 1131. The third side surface 1161 is perpendicular to the 3D printing direction of the base 11.

[0128] The second protrusion 117 is located on the top side of the third groove sidewall 1114 and protrudes from the third groove sidewall 1114 toward the first limiting block 113 (in the negative Y-axis direction shown in the figure), and is spaced apart from the first limiting block 113. The second protrusion 117 has a fourth side surface 1171, which is the surface of the second protrusion 117 facing the first limiting block 113, and is opposite to the second side surface 1132. The fourth side surface 1171 is perpendicular to the 3D printing direction of the base 11.

[0129] Both the third protrusion 118 and the fourth protrusion 119 are disposed on the groove wall of the second rotating groove 112. It should be noted that the structure of the third protrusion 118, the structure of the fourth protrusion 119, and the fitting relationship between the third protrusion 118 and the fourth protrusion 119 and the second rotating groove 112 can be referred to the relevant descriptions of the structure of the first protrusion 116, the structure of the second protrusion 117, and the fitting relationship between the first protrusion 116 and the second protrusion 117 and the first rotating groove 111 above, and will not be repeated here.

[0130] In this embodiment, the base 11 includes a shaft cover portion 14 and a support portion 15. The support portion 15 is fixedly connected to the shaft cover portion 14 and forms a first rotating groove 111 and a second rotating groove 112 with the shaft cover portion 14. The shaft cover portion 14 and the support portion 15 can be integrally formed using 3D printing technology. In other words, the shaft cover portion 14, the support portion 15, the first swing arm 23, and the second swing arm 24 are integrally formed using 3D printing technology. For example, there are three support portions 15, arranged sequentially at intervals along the length of the base 11. In other embodiments, there may be two or fewer, or four or more, support portions 15; this application does not impose specific limitations on this.

[0131] Please see Figure 5 , Figure 7 and Figure 8 , Figure 7 yes Figure 5 The diagram shows the structure of the first swing arm 23 in the connecting assembly 20. Figure 8 yes Figure 7The diagram shows the structure of the first swing arm 23 at another angle.

[0132] The first swing arm 23 includes a first rotating part 231, a second rotating part 232, and a first connecting part 233. The first rotating part 231 is rotatably connected to the base 11. The second rotating part 232 is rotatably connected to the first fixed frame 21. The first connecting part 233 connects the first rotating part 231 and the second rotating part 232. The second rotating part 232 is rotatably connected to the first fixed frame 21 via a first rotating shaft 25.

[0133] Please refer to the following: Figure 6a The structure of the first rotating part 231 is adapted to the structure of the first rotating groove 111. The first rotating part 231 is installed in the first rotating groove 111 and can rotate relative to the base 11 within the first rotating groove 111 to realize the rotational connection between the first swing arm 23 and the base 11. Specifically, the first rotating part 231 is located between the first groove side wall 1112 and the second groove side wall 1113, and is spaced apart from both the first groove side wall 1112 and the second groove side wall 1113. The first rotating part 231 includes a fifth side surface 2311 and a sixth side surface 2312. The fifth side surface 2311 is located on the rear side of the first rotating part 231, facing the first groove side wall 1112, and is spaced apart from the first groove side wall 1112. The sixth side surface 2312 is located on the front side of the first rotating part 231, facing away from the fifth side surface 2311, facing the second groove side wall 1113, and is also spaced apart from the second groove side wall 1113.

[0134] Please see Figure 6a , Figure 9 and Figure 10 , Figure 9 yes Figure 3 A partial structural schematic diagram of the rotating shaft mechanism 130 shown. Figure 10 yes Figure 4 A partial structural schematic diagram of the rotating shaft mechanism 130 is shown. Wherein, Figure 9 and Figure 10 Only the base 11 of the base assembly 10 and the first swing arm 23 and the second swing arm 24 of the connecting assembly 20 are shown.

[0135] The first rotating part 231 is provided with a first groove 234, a second groove 235, and a limiting hole 236. The opening of the first groove 234 is located on the fifth side surface 2311. The first groove 234 is recessed from the fifth side surface 2311 towards the sixth side surface 2312 (positive Y-axis direction in the figure) and penetrates the top surface of the first rotating part 231 (not shown in the figure). The first groove 234 includes a third groove bottom wall surface 2341, which is opposite to the opening of the first groove 234 and perpendicular to the 3D printing direction of the first swing arm 23.

[0136] The structure of the first groove 234 is adapted to the structure of the first protrusion 116. The first protrusion 116 is fitted into the first groove 234. When the first rotating part 231 rotates relative to the base 11 in the first rotating groove 111, the groove wall surface of the first groove 234 rotates relative to the first protrusion 116. The third side surface 1161 of the first protrusion 116 and the third bottom wall surface 2341 of the first groove 234 are spaced apart and opposite to each other.

[0137] The opening of the second groove 235 is located on the sixth side surface 2312. The second groove 235 is recessed from the sixth side surface 2312 toward the fifth side surface 2311 (in the negative Y-axis direction shown in the figure), and penetrates the top surface of the first rotating part 231, and is spaced apart from the first groove 234. The second groove 235 includes a fourth groove bottom wall surface 2351, which is opposite to the opening of the second groove 235 and perpendicular to the 3D printing direction of the first swing arm 23.

[0138] The structure of the second groove 235 is adapted to the structure of the second protrusion 117. The second protrusion 117 is fitted into the second groove 235. When the first rotating part 231 rotates relative to the base 11 in the first rotating groove 111, the groove wall surface of the second groove 235 rotates relative to the second protrusion 117. The fourth side surface 1171 of the second protrusion 117 and the fourth bottom wall surface 2351 of the second groove 235 are spaced apart and opposite to each other.

[0139] The limiting hole 236 is located on the side of the first rotating part 231 near the first connecting part 233, and extends through the first rotating part 231 along its thickness direction. The structure of the limiting hole 236 is adapted to the structure of the first limiting block 113. When the first swing arm 23 is unfolded relative to the base 11, at least a portion of the first limiting block 113 passes through the limiting hole 236, and the bottom surface 231a of the first rotating part 231 abuts against the base 11, thereby limiting further rotation of the first swing arm 23 relative to the base 11 and ensuring the stability of the rotating shaft mechanism 130 when it is in the unfolded state.

[0140] In addition, the first rotating part 231 is also provided with a notch 237 and a clearance groove 238. The opening of the notch 237 is located on the sixth side surface 2312. The notch 237 is recessed from the sixth side surface 2312 toward the fifth side surface 2311 (the negative Y-axis direction in the figure), and penetrates the groove side wall surface (not shown) of the second groove 235 and the bottom surface 231a of the first rotating part 231, and is spaced apart from the bottom wall surface 2351 of the fourth groove. The bottom wall surface (not shown) of the notch 237 includes a first wall surface 2371 and two second wall surfaces 2372. For example, the first wall surface 2371 is an arc-shaped surface. Along the width direction (the X-axis direction in the figure) of the first rotating part 231, the two second wall surfaces 2372 are respectively located on opposite sides of the first wall surface 2371, and are both connected between the first wall surface 2318 and the sixth side surface 2312. Along the 3D printing direction of the first swing arm 23, the distance between the second wall surface 2372 and the sixth side surface 2312 gradually increases along the width direction of the first swing arm 23. The second wall surface 2372 is an inclined surface, and the included angle between the second wall surface 2372 and the sixth side surface 2312 is an obtuse angle. For example, the included angle between the second wall surface 2372 and the sixth side surface 2312 is 135°.

[0141] In this embodiment, at least one structural member 131 has a third stepped surface 1314, a fourth stepped surface 1315, and a second supporting surface 1316. The fourth stepped surface 1315 is located on one side of the third stepped surface 1314 along the 3D printing direction of the structural member 131, and is also located on one side of the fourth stepped surface 1315 along the width direction of the structural member 131, and is spaced apart from the fourth stepped surface 1315. The second supporting surface 1316 connects the third stepped surface 1314 and the fourth stepped surface 1315. Along the 3D printing direction of the structural member 131, the distance between the second supporting surface 1316 and the third stepped surface 1314 in the width direction of the structural member 131 gradually increases.

[0142] In the first embodiment, the third step surface 1314 and the fourth step surface 1315 are arranged sequentially along the 3D printing direction of the structural component 131. That is, the fourth step surface 1315 is located behind the third step surface 1314. In other words, during the 3D printing process of the structural component 131, the third step surface 1314 is printed first, and then the fourth step surface 1315 is printed.

[0143] Please see Figure 8The third step surface 1314 can be the sixth side surface 2312 of the first rotating part 231, the fourth step surface 1315 can be the first wall surface 2371 of the notch 237, and the second support surface 1316 can be the second wall surface 2372. It should be noted that during the printing of the first swing arm 23 along the 3D printing direction, when printing from the sixth side surface 2312 to the first wall surface 2371, due to the height difference between the two, the second wall surface 2372 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed first swing arm 23.

[0144] The clearance groove 238 is located on the side of the notch groove 237 facing the fifth side surface 2311, and is spaced apart from both the notch groove 237 and the fifth side surface 2311. Specifically, the opening of the clearance groove 238 is located on the bottom surface 231a of the first rotating part 231. The clearance groove 238 is recessed from the bottom surface 231a of the first rotating part 231 towards the top surface (positive Z-axis direction in the figure), and penetrates the right side surface of the first rotating part 231 (not shown in the figure). The clearance groove 238 includes a fifth groove bottom wall surface 2381, a sixth groove side wall surface 2382, and a seventh groove side wall surface 2383. The fifth groove bottom wall surface 2381 is opposite to the opening of the clearance groove 238 and is located on the top side of the bottom surface of the first rotating part 231. The sixth groove side wall surface 2382 is located behind the fifth groove bottom wall surface 2381 and connects the fifth groove bottom wall surface 2381 and the bottom surface 231a of the first rotating part 231. Along the 3D printing direction of the first swing arm 23, the distance between the sixth groove sidewall 2382 and the fifth groove bottom wall 2381 gradually increases along the 3D printing direction of the first swing arm 23. The sixth groove sidewall 2382 is an inclined surface, and the included angle between the sixth groove sidewall 2382 and the fifth groove bottom wall 2381 is an obtuse angle. For example, the included angle between the sixth groove sidewall 2382 and the fifth groove bottom wall 2381 is 135°.

[0145] In this embodiment, the first step surface 1311 can be the fifth groove bottom wall surface 2381 of the clearance groove 238, the second step surface 1312 can be the bottom surface 231a of the first rotating part 231, and the first support surface 1313 can be the sixth groove side wall surface 2382. It should be noted that during the printing of the first swing arm 23 along the 3D printing direction of the first swing arm 23, when printing from the fifth groove bottom wall surface 2381 of the clearance groove 238 to the bottom surface 231a of the first rotating part 231, due to the thickness difference between the two, the sixth groove side wall surface 2382 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed first swing arm 23.

[0146] The seventh groove sidewall 2383 is located in front of the fifth groove bottom wall 2381 and connects the fifth groove bottom wall 2381 with the bottom surface 231a of the first rotating part 231. Along the 3D printing direction of the first swing arm 23, the distance between the seventh groove sidewall 2383 and the bottom surface 231a of the first rotating part 231 gradually increases along the 3D printing direction of the first swing arm 23. The seventh groove sidewall 2383 is an inclined surface, and the included angle between the seventh groove sidewall 2383 and the bottom surface 231a of the first rotating part 231 is an obtuse angle. For example, the included angle between the seventh groove sidewall 2383 and the fifth groove bottom wall 2381 is 135°.

[0147] In this embodiment, the first step surface 1311 can be the bottom surface 231a of the first rotating part 231, the second step surface 1312 can be the bottom wall surface 2381 of the fifth groove of the clearance groove 238, and the first support surface 1313 can be the side wall surface 2383 of the seventh groove. It should be noted that during the printing of the first swing arm 23 along the 3D printing direction of the first swing arm 23, when printing from the bottom surface 231a of the first rotating part 231 to the bottom wall surface 2381 of the fifth groove, due to the thickness difference between the two, the side wall surface 2383 of the seventh groove can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed first swing arm 23.

[0148] Furthermore, the first rotating part 231 is also provided with a boss 239, which is located on the bottom wall surface 2381 of the fifth groove and between the side wall surface 2382 and the side wall surface 2383 of the sixth groove, and is spaced apart from the side wall surfaces 2382 and 2383. The boss 239 includes a seventh side surface 2391 and an eighth side surface 2392. The seventh side surface 2391 is located on the rear side of the boss 239 and is opposite to the side wall surface 1112 of the first groove, and connects the bottom wall surface 2381 of the fifth groove and the bottom surface 2393 of the boss 239. Along the 3D printing direction of the first swing arm 23, the distance between the seventh side surface 2391 and the bottom surface 2393 of the boss 239 gradually increases in the 3D printing direction of the first swing arm 23. The seventh side surface 2391 is an inclined surface, and the included angle between the seventh side surface 2391 and the bottom wall surface 2381 of the fifth groove is an obtuse angle. For example, the angle between the seventh side 2391 and the bottom surface 2393 of the boss 239 is 135°.

[0149] In this embodiment, the first step surface 1311 can be the bottom surface 2393 of the boss 239, the second step surface 1312 can be the fifth groove bottom wall surface 2381 of the clearance groove 238, and the first support surface 1313 can be the seventh side surface 2391. It should be noted that during the printing of the first swing arm 23 along the 3D printing direction of the first swing arm 23, after printing the boss 239, when printing from the bottom surface 2393 of the boss 239 to the fifth groove bottom wall surface 2381, due to the thickness difference between the two, the seventh side surface 2391 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed first swing arm 23.

[0150] The eighth side surface 2392 is located in front of the boss 239 and is opposite to the sixth groove side wall 2382, and opposite to the seventh side surface 2391, connecting the fifth groove bottom wall 2381 and the bottom surface 2393 of the boss 239. Along the 3D printing direction of the first swing arm 23, the distance between the eighth side surface 2392 and the fifth groove bottom wall 2381 gradually increases in the printing direction of the first swing arm 23. The eighth side surface 2392 is an inclined surface, and the included angle between the eighth side surface 2392 and the fifth groove bottom wall 2381 is an obtuse angle. For example, the included angle between the eighth side surface 2392 and the fifth groove bottom wall 2381 is 135°.

[0151] In this embodiment, the first step surface 1311 can be the bottom wall surface 2381 of the fifth groove, the second step surface 1312 can be the bottom surface 2393 of the boss 239, and the first support surface 1313 can be the eighth side surface 2392. It should be noted that during the printing of the first swing arm 23 along the 3D printing direction of the first swing arm 23, when the boss 239 is first printed, since there is a thickness difference between the bottom wall surface 2381 of the fifth groove and the bottom surface 2393 of the boss 239, the eighth side surface 2392 can be used as a support surface to support the 3D printed material, so as to ensure the structural stability of the 3D printed first swing arm 23.

[0152] Please see Figure 11 , Figure 11 yes Figure 9 The diagram shows a cross-sectional view of the rotating shaft mechanism 130 after being cut along point II. Here, "cut along point II" refers to cutting along the plane containing line II; other similar descriptions in this document can be understood in the same way.

[0153] The structure of the boss 239 is adapted to the structure of the limiting groove 115 of the base 11. The boss 239 is fitted and installed within the limiting groove 115. When the first rotating part 231 rotates relative to the base 11 within the first rotating groove 111, the boss 239 rotates relative to the base 11 within the limiting groove 115, thereby improving the assembly stability between the first rotating part 231 and the base 11 and improving the reliability of the rotating shaft mechanism 130. When the rotating shaft mechanism 130 is in the folded state, the bottom surface 2393 of the boss 239 abuts against the groove wall of the limiting groove 115, thereby limiting the first swing arm 23 from rotating further relative to the base 11 in a clockwise direction.

[0154] Please see Figure 5 The second swing arm 24 includes a third rotating part (not shown), a fourth rotating part (not shown), and a second connecting part (not shown). The third rotating part is rotatably connected to the base 11. The fourth rotating part is rotatably connected to the second fixed frame 22. The second connecting part connects the third rotating part 241 and the fourth rotating part 242. The second rotating part is rotatably connected to the second fixed frame 22 via a second rotating shaft 26. It should be noted that the structure of the second swing arm 24 and the cooperation relationship between the second swing arm 24 and the base 11 can be referred to the relevant descriptions of the structure of the first swing arm 23 and the cooperation relationship between the first swing arm 23 and the base 11, and will not be repeated here.

[0155] In the second embodiment, the difference from the first embodiment is that the components of the damping component 30 and the components of the synchronization component 40 in the rotating shaft mechanism 130 are integrally formed using 3D printing technology. It is understood that integrally forming the components of the damping component 30 and the synchronization component 40 using 3D printing technology simplifies the assembly process of the rotating shaft mechanism 130, reduces the assembly difficulty, and helps improve the production efficiency of the rotating shaft mechanism 130.

[0156] Please see Figure 12 , Figure 12 yes Figure 5 The diagram shows the structure of the damping component 30 and the synchronization component 40.

[0157] In this embodiment, the damping assembly 30 includes a first damping shaft 31, a second damping shaft 32, a third damping shaft 33, a first damping bracket 34, a second damping bracket 35, a first damping swing arm 36, a second damping swing arm 37, a first elastic element 38, a second elastic element 39, and a third elastic element 30a. The first damping shaft 31, the second damping shaft 32, and the third damping shaft 33 are all mounted on the base 11. Along the width direction of the damping assembly 30 (the X-axis direction in the figure), the first damping shaft 31 and the second damping shaft 32 are spaced apart, and the third damping shaft 33 is located between the first damping shaft 31 and the second damping shaft 32, and is also spaced apart from the first damping shaft 31 and the second damping shaft 32. The axes of the first damping shaft 31, the second damping shaft 32, and the third damping shaft 33 are all parallel to the Y-axis direction. For example, there are two third damping shafts 33, which are spaced apart.

[0158] The first damping bracket 34 and the second damping bracket 35 are both sleeved on the first damping shaft 31, the second damping shaft 32, and the third damping shaft 33. The second damping bracket 35 is located in front of the first damping bracket 34 and is spaced apart from the first damping bracket 34. The first damping bracket 34 has a first abutment surface 341 and abutment surface 342. The first abutment surface 341 and the second abutment surface 342 are both surfaces of the first damping bracket 34 facing away from the second damping bracket 35, and are spaced apart along the width direction of the damping assembly 30. The second damping bracket 35 has a third abutment surface 351 and a fourth abutment surface 352. The third abutment surface 351 and the fourth abutment surface 352 are both surfaces of the second damping bracket 35 facing away from the first damping bracket 34, and are spaced apart along the width direction of the damping assembly 30. Along the length of the damping component 30, the third abutment surface 351 is disposed opposite to the first abutment surface 341, and the fourth abutment surface 352 is disposed opposite to the second abutment surface 342.

[0159] The first damping swing arm 36 is rotatably connected to the base 11 and slidably connected to the first fixed frame 21. Specifically, the first damping swing arm 36 is sleeved on the first damping shaft 31 and abuts against the first damping bracket 34 and the second damping bracket 35. The first damping swing arm 36 is rotatably connected to the base 11 via the first damping shaft 31. The first damping swing arm 36 has a fifth abutting surface 361 and a sixth abutting surface 362. The fifth abutting surface 361 is the surface of the first damping swing arm 36 facing the first damping bracket 34 and abuts against the first abutting surface 341. The sixth abutting surface 362 is the surface of the first damping swing arm 36 facing the second damping bracket 35 and abuts against the third abutting surface 351.

[0160] The second damping swing arm 37 is rotatably connected to the base 11 and slidably connected to the second fixed frame 22. Specifically, the second damping swing arm 37 is sleeved on the second damping shaft 32 and abuts against the first damping bracket 34 and the second damping bracket 35. The second damping swing arm 37 is rotatably connected to the base 11 via the second damping shaft 32. The second damping swing arm 37 has a seventh abutting surface 371 and an eighth abutting surface 372. The seventh abutting surface 371 is the surface of the second damping swing arm 37 facing the first damping bracket 34 and abuts against the second abutting surface 342. The eighth abutting surface 372 is the surface of the second damping swing arm 37 facing the second damping bracket 35 and abuts against the fourth abutting surface 352.

[0161] The first elastic element 38 is sleeved on the first damping shaft 31 and abuts between the first damping bracket 34 and the second damping bracket 35. The second elastic element 39 is sleeved on the second damping shaft 32 and abuts between the first damping bracket 34 and the second damping bracket 35, and is spaced apart from the first elastic element 38. There are two third elastic elements 30a, each sleeved on one of the two third damping shafts 33, and both abutting between the first damping bracket 34 and the second damping bracket 35. For example, the first elastic element 38, the second elastic element 39, and the third elastic element 30a can all be elastic structural components such as springs. It should be noted that the cooperation relationship between the components in the damping assembly 30 can refer to the relevant description of existing damping assemblies that use springs to provide damping force, and will not be repeated here.

[0162] A synchronization assembly 40 is sleeved on the first damping shaft 31 and the second damping shaft 32, and located in front of the first damping swing arm 36 and the second damping swing arm 37. The synchronization assembly 40 includes a synchronization shaft 41, a first synchronization bracket 42, a second synchronization bracket 43, a first synchronization gear 44, a second synchronization gear 45, and a third synchronization gear 46. The synchronization shaft 41 is located between the first damping shaft 31 and the second damping shaft 32, and is spaced apart from both the first and second damping shafts 31 and 32. There are two synchronization shafts 41, spaced apart along the width direction of the synchronization assembly 40. The axis of the synchronization shaft 41 is parallel to the Y-axis direction.

[0163] The first synchronous support 42 and the second synchronous support 43 are both sleeved on the first damping shaft 31, the second damping shaft 32, and the synchronous shaft 41. The second synchronous support 43 is located in front of the first synchronous support 42 and is spaced apart from it. The first synchronous gear 44 is sleeved on the first damping shaft 31 and is located between the first synchronous support 42 and the second synchronous support 43. The second synchronous gear 45 is sleeved on the second damping shaft 32 and is located between the first synchronous support 42 and the second synchronous support 43. The third synchronous gear 46 is sleeved on the synchronous shaft 41 and is located between the first synchronous support 42 and the second synchronous support 43. There are two third synchronous gears 46, each sleeved on a different synchronous shaft 41 and meshing with the first synchronous gear 44 and the second synchronous gear 45 respectively. It should be noted that the meshing relationships between the components in the synchronous assembly 40 can be referred to the relevant descriptions of existing synchronous assemblies that use gears to achieve synchronous rotation, and will not be repeated here.

[0164] Specifically, of the at least two structural components 131, one structural component 131 is a first damping shaft 31, and the other structural component 131 is a first damping swing arm 36. That is, the first damping shaft 31 and the first damping swing arm 36 are integrally formed using 3D printing technology. In some other embodiments, of the at least two structural components 131, one structural component 131 may be a second damping shaft 32, and the other structural component 131 may be a second damping swing arm 37. In this case, the second damping shaft 32 and the second damping swing arm 37 are integrally formed using 3D printing technology.

[0165] It should be noted that the structural features of the first damping shaft 31 and the first damping swing arm 36, designed to be integrated using 3D printing technology, can be referred to in the relevant description of the first embodiment above, and will not be repeated here. It should be understood that, since the first damping shaft 31 and the first damping swing arm 36 are integrated using 3D printing technology, during the assembly of the rotating shaft mechanism 130, the first elastic element 38 can be assembled with the first damping shaft 31 and the first damping swing arm 36 by extrusion.

[0166] In the third embodiment, the difference from the second embodiment described above is that, of the at least two structural components 131, one structural component 131 is a first damping bracket 34, one structural component 131 is a second damping bracket 35, one structural component 131 is a first damping swing arm 36, and one structural component 131 is a second damping swing arm 37. That is, the third damping shaft 33, the first damping bracket 34, the second damping bracket 35, the first damping swing arm 36, and the second damping swing arm 37 are integrally formed using 3D printing technology.

[0167] It should be noted that the structural features of the third damping shaft 33, the first damping bracket 34, the second damping bracket 35, the first damping swing arm 36, and the second damping swing arm 37, which are designed to adapt to the integrated molding of 3D printing technology, can all refer to the relevant description of the first embodiment above, and will not be repeated here.

[0168] In some other embodiments, of the at least two structural members 131, one structural member 131 is a first damping bracket 34 or a second damping bracket 35, and the other structural member 131 is a first damping swing arm 36 or a second damping swing arm 37; or, one structural member 131 is a first damping bracket 34 or a second damping bracket 35, one structural member 131 is a first damping swing arm 36, and one structural member 131 is a second damping swing arm 37; or, one structural member 131 is a first damping bracket 34, one structural member 131 is a second damping bracket 35, and one structural member 131 is a first damping swing arm 36 or a second damping swing arm 37. This application does not impose specific limitations on these embodiments.

[0169] In the fourth embodiment, the difference from the three embodiments described above is that all components of the rotating shaft mechanism 130, except for the shaft cover 14, are integrally formed using 3D printing technology. That is, all components of the base assembly 10, except for the shaft cover 14, the connecting assembly 20, the damping assembly 30, the synchronization assembly 40, and the door panel assembly 50, are integrally formed using 3D printing technology. The shaft cover 14 can also be formed using 3D printing technology. It should be noted that the structural features designed for the integral forming of each component in the rotating shaft mechanism 130 using 3D printing technology can be referred to the relevant description in the first embodiment above, and will not be repeated here.

[0170] In the fifth embodiment, the difference from the four embodiments described above is that the pivot mechanism 130 is integrally formed using 3D printing technology. That is, the base assembly 10, connecting assembly 20, damping assembly 30, synchronization assembly 40, and door panel assembly 50 are all integrally formed using 3D printing technology. It should be understood that since springs are not suitable for 3D printing, the damping assembly 30 should use a structure other than a spring to provide damping force. It should be noted that the structural features designed for each component of the pivot mechanism 130 to adapt to integral 3D printing technology can be referred to the relevant description in the first embodiment above, and will not be repeated here.

[0171] Please see Figure 5In this embodiment, the connecting assembly 20 may further include a third swing arm and a fourth swing arm. The third swing arm is rotatably connected to the base 11 and slidably connected to the first fixed frame 21. Along the width direction of the connecting assembly 20 (the X-axis direction in the figure), the third swing arm and the first swing arm 23 are connected to the same side of the base 11. Along the length direction of the connecting assembly 20 (the Y-axis direction in the figure), the third swing arm and the first swing arm 23 are spaced apart.

[0172] The fourth swing arm is rotatably connected to the base 11 and slidably connected to the second fixed frame 22. Along the width direction (X-axis direction in the diagram) of the connecting assembly 20, the fourth swing arm and the second swing arm 24 are connected to the same side of the base 11. Along the length direction (Y-axis direction in the diagram) of the connecting assembly 20, the fourth swing arm and the second swing arm 24 are spaced apart. It should be noted that the third swing arm can be the first damping swing arm 36 of the damping assembly 30, and the fourth swing arm can be the second damping swing arm 37 of the damping assembly 30.

[0173] In the sixth embodiment, the difference from the five embodiments described above is that in the rotating shaft mechanism 130, the three structural components are integrally formed using 3D printing technology. Specifically, one structural component 131 is the first fixed frame 21, one structural component 131 is the first swing arm 23, and one structural component 131 is the third swing arm. That is, the base 11, the first swing arm 23, and the third swing arm are integrally formed using 3D printing technology. In some other embodiments, one structural component 131 may also be the second fixed frame 22, one structural component 131 may be the second swing arm 24, and one structural component 131 may be the fourth swing arm; this application does not impose specific limitations on this.

[0174] It should be noted that the structural features of the base 11, the first swing arm 23 and the third swing arm designed to adapt to the integrated molding of 3D printing technology can all refer to the relevant description of the first embodiment above, and will not be repeated here.

[0175] In the seventh embodiment, the difference from the six embodiments described above is that the components of the synchronization assembly 40 in the rotating shaft mechanism 130 are integrally formed using 3D printing technology. In this embodiment, the synchronization assembly 40 includes a first synchronization swing arm, a second synchronization swing arm, a synchronization slide shaft, and a synchronization slider. The first synchronization swing arm is rotatably connected to the base 11 and slidably connected to the first fixed frame 21. The first synchronization swing arm has a first helical groove. The second synchronization swing arm is rotatably connected to the base 11 and slidably connected to the second fixed frame 22. The second synchronization swing arm has a second helical groove. It should be noted that the first synchronization swing arm can be the third swing arm of the connecting assembly 20 or the first damping swing arm 36 of the damping assembly 30, and the second synchronization swing arm can be the fourth swing arm of the connecting assembly 20 or the second damping swing arm 37 of the damping assembly 30.

[0176] A synchronous sliding shaft is mounted on the base 11 and located between the first and second synchronous swing arms. A synchronous slider is sleeved on the synchronous sliding shaft and can slide along the synchronous sliding shaft in the Y-axis direction. The synchronous slider has a first helical protrusion and a second helical protrusion. The first helical protrusion faces the first synchronous swing arm and is fitted into the first helical groove. The second helical protrusion faces the second synchronous swing arm and is fitted into the second helical groove. Through the cooperation of the first helical protrusion and the first helical groove, and the cooperation of the second helical protrusion and the second helical groove, the synchronous rotation of the first and second synchronous swing arms can be achieved, thereby achieving the synchronous rotation of the first fixed frame 21 and the second fixed frame 22.

[0177] Specifically, of the at least two structural components 131, one is a synchronous sliding shaft and the other is a synchronous slider. That is, the synchronous sliding shaft and the synchronous slider are integrally formed using 3D printing technology. It is understood that the design of the first and second helical protrusions on the synchronous slider is not conducive to demolding. In this embodiment, the synchronous slider is 3D printed, which solves the problem of the synchronous slider being unable to be demolded, and can effectively improve the production efficiency of the rotating shaft mechanism 130. It should be noted that the structural features designed for the integral forming of the synchronous sliding shaft and the synchronous slider to adapt to 3D printing technology can be referred to the relevant description of the first embodiment above, and will not be repeated here.

[0178] In the eighth embodiment, the difference from the seventh embodiment described above is that both the first and second synchronous swing arms are integrally formed using 3D printing technology. This not only improves the manufacturing accuracy of the first and second synchronous swing arms but also solves the problem of the first and second synchronous swing arms being unable to be demolded due to the design of the spiral grooves, effectively improving the production efficiency of the rotating shaft mechanism 130. It should be noted that the structural features designed for the first and second synchronous swing arms to adapt to the integral forming process using 3D printing technology can be referred to the relevant description in the first embodiment described above, and will not be repeated here.

[0179] In the ninth embodiment, the difference from the eight embodiments mentioned above is that the components included in the door panel assembly 50 are integrally formed by 3D printing technology, which simplifies the assembly process of the pivot mechanism 130, reduces the assembly difficulty of the pivot mechanism 130, and helps to improve the production efficiency of the pivot mechanism 130.

[0180] like Figure 5As shown, the door panel assembly 50 may further include a first door panel swing arm and a second door panel swing arm. The first door panel swing arm is rotatably connected to the base 11 and slidably and rotatably connected to the first door panel 51. The second door panel swing arm is rotatably connected to the base and slidably and rotatably connected to the second door panel 52. It should be noted that the cooperation relationship between the components in the door panel assembly 50 can be referred to the relevant description of the door panel assembly 50 in the existing pivot mechanism, and will not be repeated here.

[0181] Specifically, of the at least two structural components 131, one structural component 131 is the first door panel 51, and the other structural component 131 is the first door panel swing arm. That is, the first door panel 51 and the first door panel swing arm are integrally formed using printing technology. In some other embodiments, of the at least two structural components 131, one structural component 131 may be the second door panel 52, and the other structural component 131 may be the second door panel swing arm. In this case, the second door panel 52 and the second door panel swing arm are integrally formed using 3D printing technology. It should be noted that the structural features designed for the first door panel 51 and the first door panel swing arm to adapt to the integral forming using 3D printing technology can refer to the relevant description of the first embodiment above, and will not be repeated here.

[0182] In the tenth embodiment, the difference from the nine embodiments described above is that the electronic device 1000 is folded outwards. The pivot mechanism 130 is also folded outwards. In the pivot mechanism 130, the first door panel 51 is rotatably connected to the base 11 and rotatably connected to the first fixing frame 21. The first door panel 51 may include a first door panel portion, a first swing arm portion, and a second swing arm portion. Both the first and second swing arm portions are fixedly connected to the first door panel portion. The first swing arm portion is rotatably connected to the base 11 to achieve a rotatable connection between the first door panel 51 and the base 11. The second swing arm portion is rotatably connected to the first fixing frame to achieve a rotatable connection between the first door panel 51 and the first fixing frame 21. The second door panel 52 is rotatably connected to the base 11 and rotatably connected to the second fixing frame 22. The structure of the second door panel 52 can be referred to in the relevant description of the first door panel 51, and will not be repeated here. For example, the first door panel 51 and the second door panel 52 may also be referred to as a "24-door panel".

[0183] Of the at least two structural components 131, one is the first door panel 51, and the other is the first fixing frame 21. That is, the first door panel 51 and the first fixing frame 21 are integrally formed using 3D printing technology. In other words, the first door panel portion, the first swing arm portion, the second swing arm portion, and the first fixing frame 21 are integrally formed using 3D printing technology. In some other embodiments, of the at least two structural components 131, one may be the second door panel 52, and the other may be the second fixing frame 22. In this case, the second door panel 52 and the second fixing frame 22 are integrally formed using 3D printing technology. It should be noted that the structural features designed for the first door panel 51 and the first fixing frame 21 to accommodate integral forming using 3D printing technology can be referred to the relevant description of the first embodiment above, and will not be repeated here.

[0184] In the eleventh embodiment, the difference from the tenth embodiment is that the first door panel 51 and the second door panel 52 are formed by 3D printing technology, which can not only save the manufacturing cost of the first door panel 51 and the second door panel 52, but also improve the manufacturing accuracy of the first door panel 51 and the second door panel 52.

[0185] In the twelfth embodiment, the difference from the eleventh embodiment described above is that the base assembly 10 further includes an outer film, which is disposed on the outer surface of the base 11. Specifically, the outer film is disposed on the outer surface of the shaft cover portion 14. The outer film can be formed using 3D printing technology. It is understood that the outer film can be formed in a different 3D printing process from the base 11, allowing for customization based on individual needs and facilitating timely replacement if the outer film is damaged.

[0186] In the thirteenth embodiment, the difference from the twelve embodiments described above is that at least one structural member 131 has an energy-absorbing layer on its outer surface. The energy-absorbing layer has a microstructure inside or on its surface, and the energy-absorbing layer can absorb energy deformation to buffer the external force borne by the rotating shaft mechanism 130. The base 11 or the support 12 may also have an energy-absorbing layer.

[0187] In the pivot mechanism 130 shown in this embodiment, at least two structural components 131 are integrally formed using 3D printing technology. Assembly of these components can be achieved without additional assembly steps, significantly reducing the assembly process and difficulty of the pivot mechanism 130, and improving its production efficiency. Furthermore, since the at least two structural components 131 can be integrally formed in the same process, no additional fasteners or limiting components are needed for assembly or positioning. The absence of fasteners and limiting components occupying space in the X and Z axes of the pivot mechanism 130 reduces its space requirements, contributing to a thinner and lighter design for both the pivot mechanism 130 and the electronic device 1000.

[0188] This application provides a method for manufacturing a rotating shaft mechanism, used to manufacture the rotating shaft mechanism 130 described above. Next, the manufacturing method of the rotating shaft mechanism will be specifically described using the manufacturing method of the rotating shaft mechanism 130 shown in the first embodiment above as an example.

[0189] Please see Figure 13 and Figure 14 , Figure 13 This is a process flow diagram of the manufacturing method of the rotating shaft mechanism provided in this application. Figure 14 yes Figure 13 A schematic diagram of the structure of assembly 130a in the manufacturing method of the rotating shaft mechanism shown.

[0190] The preparation method of the rotating shaft mechanism includes steps S1 and S2.

[0191] Step S1: Assemblies 130a are 3D printed. Assemblies 130a include at least two structural members 131 and at least one connecting scrap 132, with the connecting scrap 132 connecting between the at least two structural members 131. Each of the at least two structural members 131 includes a connecting surface 1317 that connects to the connecting scrap 132, and the connecting surface 1317 is perpendicular to the 3D printing direction of the assembly 130a. For example, the 3D printing direction of the assembly 130a is the negative Y-axis direction shown in the figure.

[0192] Specifically, at least two structural components 131 include a base 11, a first swing arm 23, and a second swing arm 24. Both the first swing arm 23 and the second swing arm 24 are extended relative to the base 11. At least one connecting material 132 includes a first connecting material 133 and a second connecting material (not shown in the figure). The first connecting material 133 connects the base 11 and the first swing arm 23. The first connecting material 133 includes a first material portion 1331, a second material portion 1332, a third material portion 1333, and a fourth material portion 1334. The first material portion 1331 connects between the first groove sidewall 1112 of the first rotating groove 111 and the fifth sidewall 2311 of the first rotating part 231. The second material portion 1332 connects between the second groove sidewall 1113 of the first rotating groove 111 and the sixth sidewall 2312 of the first rotating part 231. The third excess material section 1333 is connected between the third groove bottom wall surface 2341 of the first groove 234 and the third side surface 1161 of the first protrusion 116. The fourth excess material section 1334 is connected between the fourth groove bottom wall surface 2351 of the second groove 235 and the fourth side surface 1171 of the second protrusion 117. Among them, the first groove side wall surface 1112, the second groove side wall surface 1113 of the first rotating groove 111, the fifth side surface 2311 and the sixth side surface 2312 of the first rotating part 231, the third groove bottom wall surface 2341 of the first groove 234, the fourth groove bottom wall surface 2351 of the second groove 235, the third side surface 1161 of the first protrusion 116 and the fourth side surface 1171 of the second protrusion 117 are all connecting surfaces 1317.

[0193] The second connecting material is connected between the base 11 and the second swing arm 24. The fit between the second connecting material and the base 11 and the second swing arm 24 can be referred to the fit between the first connecting material 133 and the base 11 and the first swing arm 23 described above. The surface of the base 11 and the second swing arm 24 that is connected to the second connecting material can also be the connecting surface 1317, which will not be described again here.

[0194] Step S2, remove the connecting excess material 132, allowing at least two structural members 131 to move relative to each other. For example, the connecting excess material 132 can be removed by laser, causing at least two structural members 131 to separate relative to each other, thereby allowing at least two structural members 131 to move relative to each other.

[0195] Please see Figure 15 , Figure 15 yes Figure 14 A schematic diagram of the structure of the assembly 130a after removing the connecting scrap 132.

[0196] Specifically, by removing the first connecting scrap 133 and the second connecting scrap, a base 11, a first swing arm 23, and a second swing arm 24 are obtained. Both the first swing arm 23 and the second swing arm 24 can rotate relative to the base 11. Figure 9 and Figure 10As shown. The first groove sidewall 1112 of the first rotating groove 111 and the fifth sidewall 2311 of the first rotating part 231 are spaced apart; the second groove sidewall 1113 of the first rotating groove 111 and the sixth sidewall 2312 of the first rotating part 231 are spaced apart; the third groove bottom wall 2341 of the first groove 234 and the third sidewall 1161 of the first protrusion 116 are spaced apart; and the fourth groove bottom wall 2351 of the second groove 235 and the fourth sidewall 1171 of the second protrusion 117 are spaced apart.

[0197] It should be noted that since the connecting surfaces 1317 included in the assembly 130a are all perpendicular to the 3D printing direction of the assembly 130a, the connecting material 132 will not be blocked by the structural component 131 during the process of removing the connecting material 132. The connecting material 132 can be removed effectively and cleanly, so that the structural component 131 connected by the connecting material 132 can be separated, which can effectively improve the manufacturing efficiency of the rotating shaft mechanism 130.

[0198] Furthermore, the preparation method of the rotating shaft mechanism 130 may also include step S3, such as... Figure 5 As shown, the bracket 12, the fixing member 13, the first fixing frame 21, the second fixing frame 22, the damping component 30, the synchronization component 40 and the door panel component 50 are assembled with the base 11, the first swing arm 23 and the second swing arm 24 to obtain the rotating shaft mechanism 130.

[0199] In the pivot mechanism 130 shown in this embodiment, at least two structural components 131 are integrally formed using 3D printing technology in the same 3D printing process. Assembly of the at least two structural components 131 can be achieved without an assembly process, which greatly reduces the assembly steps of the pivot mechanism 130, lowers the assembly difficulty, and helps improve the production efficiency of the pivot mechanism 130. Furthermore, since at least two structural components 131 can be integrally formed in the same process, no additional fasteners are needed for assembly, nor are additional limiting components needed for positioning. Without fasteners and limiting components occupying space in the X-axis and Z-axis directions, the space occupied by the pivot mechanism 130 is reduced, contributing to a thinner and lighter design for both the pivot mechanism 130 and the electronic device 1000.

[0200] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for manufacturing a rotating shaft mechanism, characterized in that, include: An assembly is formed by 3D printing, the assembly including at least two structural parts and at least one connecting material, the connecting material being connected between at least two of the structural parts; After removing the excess material from the connection, at least two of the structural components can move relative to each other.

2. The method for preparing the rotating shaft mechanism according to claim 1, characterized in that, In the step of printing the assembly using 3D printing, at least two of the structural components have a connecting surface that connects to the connecting scrap, and the connecting surface is perpendicular to the 3D printing direction of the assembly.

3. A rotating shaft mechanism, characterized in that, The rotating shaft mechanism is prepared by the method for preparing the rotating shaft mechanism according to claim 1 or 2.

4. A rotating shaft mechanism, characterized in that, The rotating shaft mechanism includes at least two structural components, which are movable relative to each other, wherein the at least two structural components are printed in the same 3D printing process.

5. The rotating shaft mechanism according to claim 4, characterized in that, At least one of the structural components has a first stepped surface, a second stepped surface, and a first supporting surface. The second stepped surface is located on one side of the first stepped surface along the 3D printing direction of the structural component and on one side of the first stepped surface along the thickness direction of the assembly, and is spaced apart from the first stepped surface. The first supporting surface connects the first stepped surface and the second stepped surface. Along the printing direction of the assembly, the distance between the first supporting surface and the first stepped surface gradually increases in the printing direction of the assembly.

6. The rotating shaft mechanism according to claim 5, characterized in that, The first support surface is an inclined surface, and the angle between the first support surface and the first step surface is an obtuse angle.

7. The rotating shaft mechanism according to any one of claims 4 to 6, characterized in that, At least one of the structural components has a third step surface, a fourth step surface, and a second support surface. The fourth step surface is located on one side of the third step surface along the 3D printing direction of the structural component and on one side of the third step surface along the width direction of the assembly, and is spaced apart from the third step surface. The second support surface connects the third step surface and the fourth step surface. Along the printing direction of the assembly, the distance between the second support surface and the third step surface gradually increases in the width direction of the assembly.

8. The rotating shaft mechanism according to claim 7, characterized in that, The second support surface is an inclined surface, and the angle between the second support surface and the third step surface is an obtuse angle.

9. The rotating shaft mechanism according to any one of claims 4 to 8, characterized in that, At least two of the structural components include a base and a first swing arm, the first swing arm being rotatable relative to the base.

10. The rotating shaft mechanism according to claim 9, characterized in that, The base is provided with a first rotating groove, the opening of the first rotating groove is located on the top surface of the base, the first rotating groove has a first groove side wall and a second groove side wall, and the first groove side wall and the second groove side wall are spaced apart along the 3D printing direction of the base. The first swing arm includes a first rotating part located in the first rotating groove. The first rotating part has a first side and a second side. The first side faces the side wall of the first groove and is spaced apart from the side wall of the first groove. The second side is opposite to the first side and is spaced apart from the side wall of the second groove.

11. The rotating shaft mechanism according to claim 9 or 10, characterized in that, The first swing arm is provided with a limiting hole, which penetrates the first swing arm along the thickness direction. The base is provided with a first limiting block, at least a portion of which passes through the limiting hole. The bottom surface of the first swing arm abuts against the base.

12. The rotating shaft mechanism according to any one of claims 9 to 11, characterized in that, At least two of the structural members also include a second swing arm that extends relative to the base and is rotatable relative to the base.

13. The rotating shaft mechanism according to any one of claims 9 to 12, characterized in that, The base includes a shaft cover and a support, with the support fixedly connected to the shaft cover.

14. The rotating shaft mechanism according to any one of claims 4 to 7, characterized in that, At least two of the structural components include a first damping bracket and a first damping swing arm. Along the 3D printing direction of the structural components, the first damping swing arm is located on one side of the first damping bracket and is spaced apart from the first damping bracket. The first damping swing arm is rotatable relative to the first damping bracket.

15. The rotating shaft mechanism according to claim 14, characterized in that, At least two of the structural components further include a second damping swing arm, which is located on the same side of the first damping bracket as the first damping swing arm and is spaced apart from the first damping swing arm. The second damping swing arm is rotatable relative to the first damping bracket.

16. The rotating shaft mechanism according to claim 15, characterized in that, At least two of the structural components also include a synchronization component connected between the first damping swing arm and the second damping swing arm, both of which can rotate relative to the synchronization component.

17. The rotating shaft mechanism according to any one of claims 4 to 7, characterized in that, At least two of the structural components include a first swing arm, a second swing arm, and a first fixed frame. The first swing arm and the third swing arm are spaced apart. The first swing arm is rotatable relative to the first fixed frame, and the third swing arm is slidable relative to the first fixed frame.

18. The rotating shaft mechanism according to any one of claims 4 to 7, characterized in that, At least two of the structural components include a synchronous slide shaft and a synchronous slider, the synchronous slider being slidable relative to the synchronous slide shaft.

19. The rotating shaft mechanism according to any one of claims 4 to 7, characterized in that, At least two of the structural components include a first door panel swing arm and a first door panel, wherein the first door panel swing arm is slidable and rotatable relative to the first door panel.

20. The rotating shaft mechanism according to any one of claims 4 to 7, characterized in that, At least two of the structural components include a base, a first fixing frame, and a first door panel, wherein the first fixing frame is located on one side of the base, and the first door panel is rotatably connected to the base and the first fixing frame.

21. The rotating shaft mechanism according to any one of claims 4 to 20, characterized in that, At least one of the structural components has an energy-absorbing layer on its outer surface.

22. An electronic device, characterized in that, It includes a first housing, a second housing, and a pivot mechanism as described in any one of claims 3 to 21, the pivot mechanism being connected between the first housing and the second housing.

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