WO2023246246A1 - 一种转轴装置、支撑***和折叠屏设备 - Google Patents

一种转轴装置、支撑***和折叠屏设备 Download PDF

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Publication number
WO2023246246A1
WO2023246246A1 PCT/CN2023/087912 CN2023087912W WO2023246246A1 WO 2023246246 A1 WO2023246246 A1 WO 2023246246A1 CN 2023087912 W CN2023087912 W CN 2023087912W WO 2023246246 A1 WO2023246246 A1 WO 2023246246A1
Authority
WO
WIPO (PCT)
Prior art keywords
support member
main support
cantilever
rotating shaft
section
Prior art date
Application number
PCT/CN2023/087912
Other languages
English (en)
French (fr)
Inventor
霍文龙
高久亮
朱巾帼
张垚磊
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP23825901.4A priority Critical patent/EP4390160A1/en
Publication of WO2023246246A1 publication Critical patent/WO2023246246A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681—Details related solely to hinges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0226—Hinges

Definitions

  • the present application relates to the technical field of foldable electronic products, and in particular to a rotating shaft device, a support system and a folding screen device.
  • the support system of the folding screen device includes two sides of the housing and a rotating shaft device connected between the two sides of the housing.
  • the components in the rotating shaft device produce relative movement and scratches, which easily generates noise and results in a poor user experience of the folding screen device.
  • Embodiments of the present application provide a rotating shaft device, a support system and a folding screen device to solve the problem of how to reduce the noise generated by the rotating shaft device in the folding screen device during its movement.
  • a rotating shaft device in a first aspect, includes a first main support member, a second main support member, a first auxiliary support member and a lubrication structure.
  • the first main support member has a first support surface
  • the second main support member has a second support surface
  • both the first support surface and the second support surface are used to support part of the folding screen.
  • the second main support is rotatable relative to the first main support between a deployed position and a folded position.
  • the first auxiliary support member includes a first connection part and a first cantilever part that are fixedly connected. The first connection part is located on the side facing the second support surface and is connected to the second main support member.
  • the first cantilever part includes a first Cantilever section, the first cantilever section is located on the side facing the first support surface.
  • the second main support member rotates relative to the first main support member between the unfolded position and the folded position, at least part of the first cantilever section faces each other. Slide on the first main support.
  • a lubricating structure is provided between at least the portion of the first boom section and the first main support.
  • the lubricating structure may be a smooth surface structure, that is, the lubricating structure may be a structure with a surface friction coefficient less than 0.25.
  • the surface friction coefficient of the lubrication structure can be 0.24, 0.23, 0.2, 0.1, 0.05, 0.02 or 0.01, etc.
  • the material of the lubricating structure includes but is not limited to compounds containing fluorine.
  • the material of the lubricating structure is polytetrafluoroethylene.
  • the material of the lubricating structure may also be polyoxymethylene (POM). In this way, the lubrication structure achieves the purpose of reducing noise by reducing the surface friction coefficient.
  • POM polyoxymethylene
  • the lubricating structure can also be a soft elastic structure.
  • the materials of the lubricating structure include but are not limited to elastic materials such as polyurethane, rubber, and latex. In this way, the lubricating structure achieves the purpose of reducing noise by avoiding hard contact between the two structures that rub against each other.
  • the lubricating structure is used to lubricate the at least part of the first cantilever section and the first main support member to prevent noise from being generated due to scratches between the at least part of the first cantilever section and the first main support member. promote User experience on foldable screen devices.
  • the second main support member and the first main support member, and the third main support member and the first main support member can be directly and rotatably connected by means of a rotating shaft, or It can be rotatably connected with the help of intermediate transmission mechanisms such as hinge mechanisms and four-bar mechanisms, and can also be rotatably connected with the help of soft materials such as leather and cloth, which are not specifically limited here.
  • the first auxiliary support member is in a sheet shape, and when the second main support member is in a deployed state relative to the first main support member, the first auxiliary support member is in contact with the first support surface. and the second supporting surface are stacked.
  • the thickness of the first supporting member is greater than or equal to 0.02mm and less than or equal to 0.1mm. In this way, the thickness of the rotating shaft device can be reduced, which is beneficial to making the folding screen device thinner in the unfolded or folded state, and at the same time, the structural strength of the first supporting member can be ensured.
  • the material of the lubricating structure is a compound containing fluorine element.
  • the material of the lubricating structure is polytetrafluoroethylene or polyoxymethylene.
  • the lubricating structure includes a first lubricating layer.
  • the first lubricating layer is disposed on at least part of the surface of the first cantilever section facing the first main support member.
  • an end of the first cantilever section away from the first connection part is a first end, and the first end forms an end of the first cantilever part away from the first connection part.
  • the lubricating structure also includes a second lubricating layer. The second lubricating layer is provided on the end surface of the first end. In this way, the second lubricating layer can be used to lubricate the space between the first cantilever section and the first main support member, which can reduce noise to a certain extent.
  • the lubrication structure further includes a third lubrication layer.
  • the third lubricating layer is disposed on a surface of the first cantilever section facing away from the first main support member. In this way, during the process of forming the second lubricating layer using spraying, shower coating, electrochemical deposition, electroplating and other processes, the third lubricating layer is also formed, so there is no need to cover the third surface. The processing process is simple and the operation is convenient.
  • the third lubricating layer can be fixed to the third surface in an adhesive manner, and the second lubricating layer and the third lubricating layer can be designed into one
  • the whole film is used to increase the bonding area between the lubricating structure and the first supporting member, improve the bonding strength and extend the service life.
  • the first cantilever part also includes a second cantilever section, and the second cantilever section is located on a side of the first gap facing the folding screen.
  • the lubricating structure is also disposed between the second cantilever section and the first gap. In this way, the lubrication structure is used to lubricate the second cantilever section and the swing arm, rotating shaft and other structural parts in the first gap to prevent noise caused by scratches between the second cantilever section and the structural parts in the first gap. , thereby further improving the user experience of folding screen devices.
  • the rotating shaft device further includes a third main support member and a second auxiliary support member.
  • the third main support member is located on a side of the first main support member away from the second main support member.
  • the third main support surface has a third support surface, and the third support surface is also used to support part of the folding screen.
  • the third main support is also rotatable relative to the first main support between a deployed position and a folded position.
  • the second auxiliary support member includes a second connection part and a second cantilever part that are fixedly connected. The second connection part is located on the side facing the third support surface and is connected to the third main support member.
  • the second cantilever part includes a third Cantilever section, the third cantilever section is located on the side facing the first support surface.
  • the lubricating structure is further provided between at least part of the third cantilever section and the first between the main supports. In this way, the lubricating structure is also used to lubricate the at least part of the third cantilever section and the first main support member to prevent noise from being generated due to scratching between the at least part of the third cantilever section and the first main support member. This further improves the user experience of folding screen devices.
  • the second cantilever part also includes a fourth cantilever section, and the fourth cantilever section is located on a side of the second gap facing the folding screen.
  • the lubricating structure is also disposed between the fourth cantilever section and the second gap. In this way, the lubrication structure is used to lubricate the fourth cantilever section and the swing arm, rotating shaft and other structural parts in the second gap to prevent noise from being scratched between the fourth cantilever section and the structural parts in the second gap. , thereby further improving the user experience of folding screen devices.
  • the lubricating structure includes a first lubricating film and a second lubricating film.
  • the first lubricating film includes a first fixed section and a first free section.
  • the first fixed section is fixed on the surface of the first auxiliary support facing the first main support and the second main support.
  • the first free section is located on the first fixed section.
  • the second lubricating film includes a second fixed section and a second free section.
  • the second fixed section is fixed on the surface of the second auxiliary support facing the first main support and the third main support.
  • the second free section is located on the second fixed section.
  • the second free section and the first free section are stacked.
  • the first lubricating film and the second lubricating film are staggered, which can provide lubrication and reduce noise.
  • the first lubricating film and the second lubricating film can slide relative to each other, thereby avoiding damage to the first lubricating film.
  • the relative movement away from or closer to the auxiliary support member and the second auxiliary support member has an impact.
  • the lubricating structure includes a third lubricating film.
  • the third lubricating film includes a first lubricating film area, a second lubricating film area, and a third lubricating film area.
  • the first lubricating film area is fixed on the surface of the first auxiliary support member facing the first main support member and the second main support member
  • the second lubricating film area is fixed on the surface of the second auxiliary support member facing the first main support member and the third main support member.
  • the third lubricating film area is connected between the first lubricating film area and the second lubricating film area.
  • the third lubricating film area is elastically stretchable in the direction from the first lubricating film area to the second lubricating film area. In this way, when the second main support member and the third main support member rotate from the unfolded position to the folded position, the third lubricating film area is in a stretched state and accumulates elastic force. When the second main support member and the third main support member rotate When the piece rotates from the folded position to the unfolded position, the third lubricating film area contracts under the accumulated elastic force. Therefore, when the second main support member and the third main support member rotate relative to the first main support member between the unfolded position and the folded position, the third lubricating film area elastically expands and contracts, which can avoid damage to the first auxiliary support member and the folded position.
  • the rotating shaft device in this embodiment can simultaneously lubricate the first auxiliary support member and the second auxiliary supporting member by means of the third lubricating film, and reduce noise. Therefore, the rotating shaft device has a simple structure and is easy to implement.
  • the lubricating structure may further include a fourth lubricating film and a fifth lubricating film.
  • One end of the fourth lubricating film is fixed on the surface of the first auxiliary support member facing the first main support member and the second main support member, and the other end is fixed on the first main support member.
  • the fourth lubricating film is elastically stretchable from one end where the first auxiliary support is fixed to an end where the first main support is fixed.
  • a certain section or the entirety of the fourth lubricating film is a soft elastic structure.
  • the materials of the soft elastic structure include but are not limited to elastic materials such as polyurethane, rubber, and latex.
  • the fifth lubricating film is fixed on the surface of the second auxiliary support member facing the first main support member and the third main support member, and the other end is fixed on the first main support member.
  • the fifth lubricating film is elastically stretchable from one end where the second auxiliary support member is fixed to an end where the first main support member is fixed. In this way, when the second main support member and the third main support member When rotating from the unfolded position to the folded position, the fourth lubricating film and the fifth lubricating film elastically expand and contract, which can avoid affecting the relative distance or approach movement of the first auxiliary support member and the second auxiliary support member.
  • the rotating shaft device further includes a third main support member.
  • the third main support member is located on a side of the first main support member away from the second main support member.
  • the third main support surface has a third support surface, and the third support surface is also used to support part of the folding screen.
  • the third main support is also rotatable relative to the first main support between a deployed position and a folded position.
  • the first cantilever part also includes a fifth cantilever section, the fifth cantilever section is located on the side of the first cantilever section away from the first connecting part, and the fifth cantilever section is located on the side that the third supporting surface faces.
  • a lubricating structure is also provided between at least part of the fifth boom section and the third main support.
  • the lubricating structure is also used to lubricate the relationship between at least part of the fifth cantilever section and the third main support member, thereby preventing noise from being generated due to scratches between at least part of the fifth cantilever section and the third main support member. Further improve the user experience of folding screen devices.
  • the lubrication structure includes a fourth lubrication layer.
  • the fourth lubricating layer is provided on the first supporting surface.
  • the fourth lubrication layer can be used to lubricate between the first cantilever section of the first auxiliary support member and the first main support member, and between the third cantilever section of the second auxiliary support member and the first main support member. This prevents noise from being generated due to scratches between the first cantilever section and the first main support member, and between the third cantilever section and the first main support member, thereby improving the user experience of the folding screen device.
  • lubrication can be achieved simultaneously between the first auxiliary support member and the first main support member, and between the second auxiliary support member and the first main support member, which is beneficial to reducing the structure of the rotating shaft device. the complexity.
  • a rotating shaft device in a second aspect, includes a first main support member, a second main support member, a first auxiliary support member and a lubrication structure.
  • the first main support member has a first support surface
  • the second main support member has a second support surface
  • both the first support surface and the second support surface are used to support part of the folding screen.
  • the second main support is rotatable relative to the first main support between a deployed position and a folded position.
  • the first auxiliary support member includes a first connection part and a first cantilever part that are fixedly connected. The first connection part is located on the side facing the first support surface and is connected to the first main support member.
  • the first cantilever part includes a first Cantilever section, the first cantilever section is located on the side toward which the second support surface faces.
  • the second main support member rotates between the unfolded position and the folded position relative to the first main support member, at least part of the first cantilever section faces each other. Slide on the second main support.
  • a lubricating structure is provided between at least the portion of the first boom section and the second main support.
  • the lubricating structure may be a smooth surface structure, that is, the lubricating structure may be a structure with a surface friction coefficient less than 0.25.
  • the surface friction coefficient of the lubrication structure can be 0.24, 0.23, 0.2, 0.1, 0.05, 0.02 or 0.01, etc.
  • the material of the lubricating structure includes but is not limited to compounds containing fluorine.
  • the material of the lubricating structure is polytetrafluoroethylene.
  • the material of the lubricating structure may also be polyoxymethylene (POM). In this way, the lubrication structure achieves the purpose of reducing noise by reducing the surface friction coefficient.
  • POM polyoxymethylene
  • the lubricating structure can also be a soft elastic structure.
  • the materials of the lubricating structure include but are not limited to elastic materials such as polyurethane, rubber, and latex. In this way, the lubricating structure achieves the purpose of reducing noise by avoiding hard contact between the two structures that rub against each other.
  • the lubricating structure is used to lubricate the at least part of the first cantilever section and the second main support member to prevent noise from being generated due to scratches between the at least part of the first cantilever section and the second main support member. Improve the user experience of folding screen devices.
  • the second aspect there is a third main support member between the first main support member and the second main support member.
  • the first cantilever portion also includes a second cantilever section located on a side of the first gap facing the folding screen.
  • the lubricating structure is also disposed between the second cantilever section and the first gap. In this way, the lubrication structure is used to lubricate the second cantilever section and the swing arm, rotating shaft and other structural parts in the first gap to prevent noise caused by scratches between the second cantilever section and the structural parts in the first gap. , thereby further improving the user experience of folding screen devices.
  • the rotating shaft device further includes a third main support member and a second auxiliary support member.
  • the third main support member is located on a side of the first main support member away from the second main support member.
  • the third main support surface has a third support surface, and the third support surface is also used to support part of the folding screen.
  • the third main support is also rotatable relative to the first main support between a deployed position and a folded position.
  • the second auxiliary support includes a second connection part and a second cantilever part that are fixedly connected. The second connection part is located on the side facing the first support surface and is connected to the first main support part.
  • the second cantilever part includes a third A cantilever section, the third cantilever section is located on the side facing the third support surface.
  • the third main support member rotates between the unfolded position and the folded position relative to the first main support member, at least part of the third cantilever section Slide relative to the third main support.
  • a lubricating structure is also provided between at least the portion of the third cantilever section and the third main support.
  • the lubricating structure is used to lubricate the at least part of the third cantilever section and the third main support member to prevent noise from being generated due to scratches between the at least part of the third cantilever section and the third main support member. Further improve the user experience of folding screen devices.
  • the second cantilever part further includes a fourth cantilever section located on a side of the second gap facing the folding screen.
  • the lubricating structure is also disposed between the fourth cantilever section and the second gap. In this way, the lubrication structure is used to lubricate the fourth cantilever section and the swing arm, rotating shaft and other structural parts in the second gap to prevent noise from being scratched between the fourth cantilever section and the structural parts in the second gap. , thereby further improving the user experience of folding screen devices.
  • a support system in a third aspect, includes a first housing, a second housing and a rotating shaft device as described in any of the above technical solutions.
  • the rotating shaft device is connected between the first housing and the second housing.
  • the support system provided by the embodiment of the present application includes the rotating shaft device described in any of the above technical solutions, both can solve the same problem and achieve the same effect.
  • a folding screen device in a fourth aspect, includes a folding screen and the support system as described in the above technical solution.
  • the folding screen includes a first display area, a second display area and a third display area, and the third display area is connected between the first display area and the second display area.
  • the first display area is provided on the first housing, and the second display area is provided on the second housing.
  • the third display area is provided on the rotating shaft device.
  • folding screen device provided by the embodiment of the present application includes the support system described in any of the above technical solutions, both can solve the same problem and achieve the same effect.
  • Figure 1 is a perspective view of a folding screen device in an unfolded state according to some embodiments of the present application
  • Figure 2 is a partially exploded structural diagram of the folding screen device shown in Figure 1;
  • Figure 3 is a schematic structural diagram of the folding screen device shown in Figure 1 when it is in a folded state
  • Figure 4 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 5 is a schematic structural diagram of the rotating shaft device shown in Figure 4 when it is in a folded state
  • Figure 6 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 7 shows the second main support member in the rotating shaft device shown in Figure 6 from the deployed position relative to the first main support member along direction a1. Structural diagram when the device is rotated to the folded position;
  • Figure 8 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 9 is a schematic structural diagram of a rotating shaft device provided in some embodiments of the present application.
  • Figure 10 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 11 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 12 is a schematic structural view of the third main support member in the rotating shaft device shown in Figure 11 when it rotates relative to the first main support member along direction a1 from the unfolded position to the folded position;
  • Figure 13 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 14 is a schematic structural view of the rotating shaft device shown in Figure 13 when it rotates from the unfolded state to the folded state;
  • Figure 15 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 16 is a schematic structural view of the rotating shaft device shown in Figure 15 when it rotates from the unfolded state to the folded state;
  • Figure 17 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 18 is a schematic structural view of the second main support member and the third main support member in the rotating shaft device shown in Figure 17 when they rotate from the unfolded position to the folded position in direction a1 relative to the first main support member;
  • Figure 19 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 20 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 21 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 22 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 23 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 24 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • Figure 25 is a schematic structural diagram of a rotating shaft device provided by some embodiments of the present application.
  • first”, “second”, “third”, “fourth”, “fifth” and “sixth” are only used for descriptive purposes and shall not be understood as indicating or implying Relative importance or implicit indication of the quantity of technical features indicated. Thus, features defined as “first”, “second”, “third”, “fourth”, “fifth”, and “sixth” may explicitly or implicitly include one or more of these features .
  • the terms “comprising”, “comprises” or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that includes a list of elements not only includes those elements, but also Includes other elements not expressly listed or elements inherent to the process, method, article or apparatus.
  • an element defined by the statement “comprises a" does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.
  • the present application provides a folding screen device, which may be user equipment (user equipment, UE) or terminal device (terminal), etc.
  • the folding screen device can be a tablet computer (portable android device, PAD), personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device, vehicle Equipment, wearable devices, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self driving) , wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, smart home ) in wireless terminals and other mobile terminals or fixed terminals.
  • the form of the folding screen device is not specifically limited.
  • FIG. 1 is a perspective view of the folding screen device 100 in an unfolded state according to some embodiments of the present application.
  • FIG. 2 is a partially exploded structural diagram of the folding screen device 100 shown in FIG. 1 .
  • the folding screen device 100 being a handheld device with a wireless communication function.
  • the handheld device with a wireless communication function may be, for example, a mobile phone.
  • the folding screen device 100 is approximately in the shape of a rectangular flat plate in the unfolded state.
  • an XYZ coordinate system is established for the folding screen device 100 in the unfolded state, and the length direction of the folding screen device 100 is defined as the X-axis direction, and the width direction of the folding screen device 100 is defined as the Y-axis direction. , the thickness direction of the folding screen device 100 is the Z-axis direction.
  • the coordinate system setting of the folding screen device 100 can be flexibly set according to actual needs, and is not specifically limited here.
  • the shape of the folding screen device 100 may also be a square flat plate, a circular flat plate, an elliptical flat plate, etc.
  • the folding screen device 100 includes a folding screen 10 and a support system 20 .
  • the folding screen 10 includes a screen body 11 and a support structure 12 arranged in a stack.
  • the screen body 11 is used to display information such as images and videos.
  • the screen main body 11 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, or a quantum dot light emitting diode (QLED) screen.
  • OLED organic light-emitting diode
  • QLED quantum dot light emitting diode
  • liquid crystal display liquid crystal display, LCD
  • the screen body 11 has a display surface for displaying image information, and the display surface of the screen body 11 is exposed to facilitate presenting images, videos and other information to the user.
  • the support structure 12 is disposed on the side of the screen body 11 facing away from the display surface, and is stacked with the screen body 11 .
  • the support structure 12 is also called a bamboo book and is used to increase the structural strength of the folding screen 10 .
  • the support structure 12 can be folded together with the screen body 11 .
  • the support structure 12 may be in the shape of a sheet, and the material of the support structure 12 includes but is not limited to metal and composite materials containing fiber materials.
  • the folding screen 10 includes a first display area 10a, a second display area 10b and a third display area 10c.
  • the first display area 10a, the second display area 10b and the third display area 10c are each composed of part of the screen body 11 and part of the supporting structure 12 opposite thereto.
  • the third display area 10c is connected between the first display area 10a and the second display area 10b.
  • the folding screen device 100 shown in Figure 1 the folding screen 10 is in an unfolded state, and the first display area 10a, the third display area 10c, and the second display area 10b are arranged in sequence along the X-axis direction. In this way, the folding screen device 100 is fold.
  • the first display area 10a, the third display area 10c, and the second display area 10b may also be arranged sequentially along the Y-axis direction. In this way, the folding screen device 100 is folded in the longitudinal direction.
  • a large-screen display can be realized to provide the user with richer information and give the user a better user experience.
  • At least the third display area 10c of the folding screen 10 is a flexible screen structure.
  • the third display area 10c can be bent and deformed under the action of external force, so that the folding screen 10 can be folded from the unfolded state to the folded state as shown in FIG. 1 .
  • the first display area 10a and the second display area 10b of the folding screen 10 may have a flexible screen structure or a hard screen structure, or may have a partially flexible screen structure and a partially hard screen structure, which are not specifically limited here.
  • FIG. 3 is a schematic structural diagram of the folding screen device 100 shown in FIG. 1 in a folded state.
  • the folding screen 10 in the folding screen device 100 is also in a folded state.
  • the first display area 10a and the second display area 10b of the folding screen 10 are approximately parallel and opposite.
  • the angle between the first display area 10a and the second display area 10b is within 30 degrees (°)
  • the first display area 10a and the second display area 10b can be considered to be approximately parallel.
  • the first display area 10a and the second display area 10b are opposite means that the display surface of the first display area 10a faces the display surface of the second display area 10b.
  • the third display area 10c is folded into a water drop shape.
  • the third display area 10c includes an arc segment 10c3 and an arc segment 10c3.
  • the first transition section 10c1 is connected between the arc section 10c3 and the first display area 10a.
  • the second transition section 10c2 is connected between the arc section 10c3 and the second display area 10b.
  • the distance between the end of the first transition section 10c1 connecting the first display area 10a and the end of the second transition section 10c2 connecting the second display area 10b is the third distance.
  • the first transition section 10c1 connects one end of the arc section 10c3 and the third distance.
  • the distance between one end of the two transition sections 10c2 connecting the arc section 10c3 is the fourth distance, and the fourth distance is greater than the third distance. It can be understood that when the folding screen device is in a folded state, the third display area 10c of the folding screen 10 can also be folded into other shapes according to actual needs, and this application does not limit this.
  • the support system 20 is protected outside the folding screen 10.
  • the folding screen 10 is invisible to the user and can prevent the folding screen 10 from being scratched by hard objects.
  • the folding screen device is The folding screen device is folded inward, and the size of the folding screen device 100 is reduced, making it easy to carry.
  • the support system 20 is used to carry the folding screen 10 .
  • the support system 20 includes a first housing (which can also be called a main housing) 21 , a second housing (which can also be called an auxiliary housing) 22 and a rotating shaft device 23 .
  • the first housing 21 carries the first display area 10a
  • the second housing 22 carries the second display area 10b.
  • the rotating shaft device 23 is connected between the first housing 21 and the second housing 22 and carries the third display area 10c.
  • the rotating shaft device 23 is used to realize rotation between the second housing 22 and the first housing 21 to support the folding of the folding screen 10 between the unfolded state and the folded state.
  • the first housing 21 may include a middle frame and a back cover that are connected together.
  • the first display area 10a of the folding screen 10 is carried on the middle frame of the first housing 21, and the back cover It is located on the side of the middle frame away from the first display area 10a, and the back cover can be replaced with a display screen (such as an LCD display screen).
  • An accommodation cavity is formed between the middle frame and the back cover, and the accommodation cavity is used to accommodate electronic components such as the motherboard, camera module, and battery.
  • the first housing 21 can be connected to the rotating shaft device 23 through the middle frame, or can be connected to the rotating shaft device 23 through the back cover.
  • the second housing 22 may also include a middle frame and a back cover that are connected together.
  • the second display area 10b of the folding screen 10 is carried on the middle frame of the second housing 22, and the back cover is located away from the middle frame.
  • the second side of the display area 10b, and the back cover can also be replaced with a display screen (such as an LCD display screen).
  • An accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used to accommodate electronic components such as sub-boards, speaker modules, arrays, and batteries.
  • the second housing 22 can be connected to the rotating shaft device 23 through the middle frame, or can be connected to the rotating shaft device 23 through the back cover.
  • FIG. 4 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 includes a first main support member 231 , a second main support member 232 and a third main support member 233 .
  • the materials of the first main support member 231 , the second main support member 232 and the third main support member 233 include but are not limited to plastic and metal.
  • the first main support member 231 , the second main support member 232 and the third main support member 233 may be in the shape of a plate or a block, etc., and are not specifically limited here.
  • FIG. 4 schematically shows some components included in the rotating shaft device 23 , and the actual shapes, actual sizes, actual positions and actual configurations of these components are not limited by FIG. 4 .
  • the rotating shaft device 23 may also include structures such as a base, a shaft cover, and a swing arm.
  • the first main support 231 is used to carry part of the folding screen 10 . Specifically, the first main support member 231 is used to carry the arc segment 10c3 of the third display area 10c.
  • the second main support member 232 and the third main support member 233 are respectively located on opposite sides of the first main support member 231.
  • the second main support 232 and the third main support 233 are also used to carry part of the folding screen 10 .
  • the second main support member 232 is used to carry the first transition section 10c1 of the third display area 10c
  • the third main support member 233 is used to carry the second transition section 10c2 of the third display area 10c.
  • Both the second main support member 232 and the third main support member 233 can rotate relative to the first main support member 231 between the unfolded position and the folded position to support the third display area 10c to be folded between the unfolded state and the folded state.
  • the first main support member 231 has a first support surface m1, and the first main support member 231 supports the arc segment 10c3 by means of the first support surface m1.
  • the second main support member 232 has a second support surface m2, and the second main support member 232 supports the first transition section 10c1 via the second support surface m2.
  • the third main support member 233 has a third support surface m3, and the third main support member 233 supports the second transition section 10c2 by means of the third support surface m3.
  • the rotating shaft device 23 shown in Figure 4 is in an expanded state.
  • the second main support member 232 and the third main support member 233 are in the expanded position, and the first support surface m1, the second support surface m2 and the third support surface m3 They are approximately coplanar, that is, the angle between the first support surface m1 and the second support surface m2 is approximately 180°, and the angle between the first support surface m1 and the third support surface m3 is also approximately 180°. , so that the third display area 10c supported thereon is in an expanded state.
  • the support system 20 including the rotating shaft device 23 and the folding screen device including the supporting system 20 are also in the unfolded state, the angle between the first housing 21 and the second housing 22, and The included angle between the first display area 10a and the second display area 10b is also approximately 180°.
  • FIG. 5 is a schematic structural diagram of the rotating shaft device 23 shown in FIG. 4 when it is in a folded state.
  • the second main support member 232 and the third main support member 233 are in the folded position
  • the second support surface m2 and the third support surface m3 are arranged opposite to each other
  • the second support surface m2 and the third support surface m3 are arranged opposite to each other.
  • the first supporting surface m1 is inclined or vertically arranged so that the third display area 10c supported thereon is in a folded state.
  • the support system 20 including the rotating shaft device 23 and the folding screen device including the supporting system 20 are also in the folded state, the angle between the first housing 21 and the second housing 22, and The included angle between the first display area 10a and the second display area 10b is also approximately 0°.
  • the rotation angles of the second main support member 232 and the third main support member 233 from the unfolded position to the folded position are ⁇ 1 and ⁇ 2 respectively.
  • the rotation angles ⁇ 1 and ⁇ 2 are both. greater than 90°. In this way, the third display area 10c can be folded into a water drop shape.
  • the rotation angles ⁇ 1 and ⁇ 2 may also be less than or equal to 90° to fold the third display area 10c into other shapes, which is not specifically limited in this application.
  • the second main support member 232 and the first main support member 231, and the third main support member 233 and the first main support member 231 can be directly and rotatably connected by means of a rotating shaft, or by means of a hinge mechanism, a four-bar mechanism, etc. middle
  • the transmission mechanism can be rotatably connected, and can also be rotatably connected with the help of leather, cloth and other soft materials, which are not specifically limited here.
  • the rotation axis of the second main support member 232 relative to the first main support member 231 is the first axis O1
  • the rotation axis of the third main support member 233 relative to the first main support member 231 is the second axis O2.
  • the second main support member 232 during the rotation of the second main support member 232 about the first axis O1 between the unfolded position and the folded position, it also moves in a direction closer to or away from the first axis O1 .
  • the second main support member 232 rotates around the first axis O1 from the unfolded position to the folded position, it also moves in a direction away from the first axis O1.
  • the second main support member 232 rotates around the first axis O1 from the folded position to the unfolded position, it also moves in a direction close to the first axis O1.
  • the third main support member 233 rotates around the second axis O2 between the unfolded position and the folded position, it also moves in a direction closer to or away from the second axis O2. For example, when the third main support member 233 rotates around the second axis O2 from the unfolded position to the folded position, it also moves in a direction away from the second axis O2. When the third main support member 233 rotates around the second axis O2 from the folded position to the unfolded position, it also moves in a direction close to the second axis O2.
  • the position of the first main support member 231 can drop to a certain height relative to the first housing and the second housing. , to avoid the third display area 10c and reduce the possibility of folding damage to the third display area 10c.
  • the distance from the first axis O1 may also remain unchanged.
  • the distance from the second axis O2 can also remain unchanged, which is not specifically limited here.
  • the first main support 231 may be relative to the first axis.
  • the positions of O1 and the second axis O2 are fixed. This structure is simple and easy to implement.
  • the first main support member 231 when the second main support member 232 and the third main support member 233 rotate between the unfolded position and the folded position, the first main support member 231 can also be rotated relative to the first axis O1 and the second axis O2 Raise and lower along the Z axis.
  • the first main support member 231 descends along the Z-axis relative to the first axis O1 and the second axis O2;
  • the main support member 232 and the third main support member 233 rotate from the folded position to the unfolded position, the first main support member 231 rises along the Z-axis relative to the first axis O1 and the second axis O2.
  • This application does not specifically limit this, as long as the second main support member 232 and the third main support member 233 can rotate relative to the first main support member 231 .
  • first gap d1 between the first main support member 231 and the second main support member 232
  • second gap d1 between the first main support member 231 and the third main support member 233 .
  • Gap d2 In this way, a certain gap is reserved between the first main support member 231 and the second main support member 232, and between the first main support member 231 and the third main support member 233, to avoid the second main support member 232 and the third main support member 233 being separated from each other.
  • the gap in the above embodiment cannot effectively support the folding screen 10.
  • the folding screen 10 is prone to bending and deformation, and the folding screen device has a greater risk of damage and failure. .
  • FIG. 6 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 includes a first auxiliary support member 234 in addition to the first main support member 231 , the second main support member 232 and the third main support member 233 .
  • the first auxiliary support member 234 is in the form of a sheet as a whole.
  • the first auxiliary support member 234 is stacked on the first support surface m1 of the first main support member 231 and the second support of the second main support member 232 On the surface m2, that is, the first auxiliary support member 234 is substantially parallel to the first support surface m1 and the second support surface m2. In this way, the thickness of the rotating shaft device 23 in the Z-axis direction can be reduced, which is beneficial to making the folding screen device 100 thinner in the unfolded state or the folded state.
  • the thickness of the first auxiliary support member 234 may be greater than or equal to 0.02 millimeters (mm) and less than or equal to 0.10 mm.
  • the thickness of the first auxiliary support member 234 may be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm or 0.1mm. In this way, the thickness of the first auxiliary support member 234 is moderate, which not only ensures the structural strength, but also takes into account the thickness of the rotating shaft device 23 in the Z-axis direction, which is conducive to thinning the folding screen device 100 in the unfolded state or the folded state.
  • the first auxiliary support member 234 can also be in the shape of a plate, a block, a strip, etc., which is not specifically limited here.
  • the first secondary support 234 may be elastic. In this way, when the second main support member 232 rotates between the unfolded position and the folded position relative to the first main support member 231 , the first auxiliary support member 234 can be bent together with the folding screen 10 to avoid affecting the folding screen 10 The bending effect.
  • the material of the first sub-support 234 includes, but is not limited to, metals such as steel, titanium alloy, and composite materials containing fiber materials such as glass fiber, carbon fiber, and aramid fiber.
  • steel is an iron-carbon alloy with a carbon content ranging from 0.02% to 2.11%.
  • the structural strength of these materials is relatively good, which not only ensures the support strength of the first auxiliary support member 234, but also helps reduce the thickness of the first auxiliary support member 234, thereby facilitating the thinning of the folding screen device 100.
  • these materials are elastic-plastic materials.
  • the first auxiliary support member 234 When the first auxiliary support member 234 is in a sheet shape, the first auxiliary support member 234 has elasticity, and the first auxiliary support member 234 can be bent along with the folding screen 10 .
  • the first auxiliary support member 234 includes a first connecting portion 2341 and a first cantilever portion 2342 that are fixedly connected.
  • the first connecting portion 2341 is located on the front side of the second main support member 232 , that is, the first connecting portion 2341 is located on the side toward which the second supporting surface m2 of the second main supporting member 232 faces, and the first connecting portion 2341
  • the orthographic projection on the second support surface m2 is located within the second support surface m2.
  • the first connecting portion 2341 is connected to the second main support member 232 .
  • the first connection part 2341 can be fixedly connected to the second main support 232 with the help of adhesive C.
  • the first connection part 2341 can also use screws, buckles and other structures. It is fixedly connected to the second main support member 232, or rotatably connected to the second main support member 232 by means of a rotating shaft, a flexible structure, etc., which is not specifically limited here.
  • the first connecting part 2341 may be directly connected to the second main support member 232 or may be connected to other structures relatively fixed to the second main support member 232, which is not specifically limited here.
  • the first cantilever portion 2342 is in a cantilever shape.
  • the first cantilever portion 2342 includes a first cantilever section 2342a.
  • the first cantilever section 2342a means: when the rotating shaft device 23 is in the unfolded state, the first cantilever portion 2342 is located on the side facing the first support surface m1, and the orthographic projection on the first support surface m1 is located on the first support surface. The part within face m1.
  • the first auxiliary support member 234 spans the first gap d1, and at least a portion of the first auxiliary support member 234 covering the first gap d1.
  • the first cantilever portion 2342 may also include a second cantilever section 2342b.
  • the second cantilever section 2342b is located between the first connecting portion 2341 and the first cantilever section 2342a.
  • the second cantilever section 2342b refers to: when the rotating shaft device 23 is in the unfolded state, the first cantilever portion 2342 is located on the side of the first gap d1 facing the folding screen 10, and the projection along the Z-axis direction in the first gap d1 is located at The part within the first gap d1.
  • the second cantilever section 2342b covers the first gap d1.
  • the folding screen 10 is located on the side of the first auxiliary support member 234 away from the first main supporting member 231 and the second main supporting member 232.
  • the rotating shaft device 23 relies on the first auxiliary supporting member.
  • the second cantilever section 2342b of 234 supports the portion of the folding screen 10 opposite to the first gap d1, which can improve the support performance of the rotating shaft device 23.
  • FIG. 7 is a schematic structural diagram of the second main support member 232 in the rotating shaft device 23 shown in FIG. 6 when rotating along the direction a1 from the unfolded position to the folded position relative to the first main support member 231 .
  • the first The entirety of the cantilever section 2342a is in contact with the first main support 231 and slides to the left in direction a2 relative to the first main support 231 .
  • scratches are generated between the entire first cantilever section 2342a and the first main support member 231, and noise is generated, resulting in a poor user experience of the folding screen device.
  • FIG. 8 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 in addition to the first main support member 231 , the second main support member 232 , the third main support member 233 and the first auxiliary support member 234 , the rotating shaft device 23 also includes a lubricating structure 236 .
  • the lubricating structure 236 is disposed between at least the above-mentioned portion of the first cantilever section 2342a and the first main support 231 .
  • the lubricating structure 236 may be a smooth surface structure, that is, the lubricating structure 236 may be a structure with a surface friction coefficient less than 0.25. Specifically, the surface friction coefficient of the lubricating structure 236 may be 0.24, 0.23, 0.2, 0.1, 0.05, 0.02 or 0.01, etc.
  • the material of the lubricating structure 236 includes but is not limited to compounds containing fluorine. In an example, the material of the lubricating structure 236 is polytetrafluoroethylene. In some other embodiments, the material of the lubricating structure 236 may also be polyoxymethylene (POM). In this way, the lubricating structure 236 achieves the purpose of reducing noise by reducing the surface friction coefficient.
  • POM polyoxymethylene
  • the lubricating structure 236 may also be a soft elastic structure.
  • the material of the lubricating structure 236 includes, but is not limited to, elastic materials such as polyurethane, rubber, and latex. In this way, the lubricating structure 236 achieves the purpose of reducing noise by avoiding hard contact between the two structures that rub against each other.
  • the lubricating structure 236 is used to lubricate at least part of the first cantilever section 2342a and the first main support 231 to prevent friction between at least part of the first cantilever section 2342a and the first main support 231. And generate noise, thereby improving the user experience of folding screen devices.
  • the lubrication structure 236 has various structural forms.
  • the lubrication structure 236 includes a first lubrication layer 2361 .
  • the first lubricating layer 2361 is provided on at least part of the surface of the first cantilever section 2342a facing the first main support 231 . Assuming that the surface of the first cantilever section 2342a facing the first main support 231 is the first surface, at least part of the surface of the first cantilever section 2342a facing the first main support 231 is the first area on the first surface.
  • the first lubricating layer 2361 can be disposed in the entire first area, or It may be set in a part of the first area, which is not limited in this application.
  • the first lubricating layer 2361 can also be disposed on other areas of the first surface.
  • Figure 8 shows an example of the first lubricating layer 2361 being disposed on the entire area of the first surface. Example, this cannot be considered as a special limitation on this application. This structure is simple, the installation area of the lubricating structure 236 is small, and the cost is low.
  • FIG. 9 is a schematic structural diagram of the rotating shaft device 23 in some further embodiments of the present application.
  • an end of the first cantilever section 2342a away from the first connection part 2341 is a first end, and the first end forms an end of the first cantilever part 2342 away from the first connection part 2341 (also called a cantilever end).
  • the lubrication structure 236 also includes a second lubrication layer 2362. The second lubricating layer 2362 is provided on the end surface of the first end.
  • the second lubricating layer 2362 can be disposed on a partial area of the second surface, or can be disposed on the entire area of the second surface.
  • Figure 9 shows the arrangement of the second lubricating layer 2362. Example for the entire area of the second surface. In this way, the second lubricating layer 2362 can be used to lubricate the space between the first cantilever section 2342a and the first main support 231, which can reduce noise to a certain extent.
  • the lubrication structure 236 may include a first lubrication layer 2361 and a second lubrication layer 2362 at the same time, which can improve the lubrication effect and further reduce noise.
  • the lubrication structure 236 may also include the second lubrication layer 2362 instead of the first lubrication layer 2361, which is not specifically limited here.
  • the second lubrication layer 2362 may be in contact with the first lubrication layer 2361, or may not be in contact with the first lubrication layer 2361, which will not be detailed here. limited.
  • the above-mentioned first lubricating layer 2361 and second lubricating layer 2362 may be in direct contact with the surface of the first cantilever part 2342.
  • the first lubricating layer 2361 and the second lubricating layer 2362 can be formed on the surface of the first cantilever portion 2342 using processes such as spraying, shower coating, electrochemical deposition, and electroplating, and are not specifically limited here.
  • both the first lubricating layer 2361 and the second lubricating layer 2362 are thin film structures, between the first lubricating layer 2361 and the surface of the first cantilever portion 2342, and between the second lubricating layer 2362 and the first cantilever portion.
  • An adhesive is provided between the surfaces of the first cantilever portion 2342, and the first lubricating layer 2361 and the second lubricating layer 2362 are bonded to the surface of the first cantilever portion 2342 by means of the adhesive, which is not specifically limited here.
  • FIG. 10 is a schematic structural diagram of the rotating shaft device 23 provided in still other embodiments of the present application.
  • the lubrication structure 236 includes a third lubrication layer 2363 in addition to the second lubrication layer 2362 .
  • the third lubricating layer 2363 is provided on the surface of the first cantilever section 2342a facing away from the first main support 231 .
  • the surface of the first cantilever section 2342a facing away from the first main support 231 is the third surface.
  • the third lubricating layer 2363 can be disposed on the entire area of the third surface or on a partial area of the third surface.
  • Figure 10 gives an example in which the third lubricating layer 2363 is provided on the entire area of the third surface, which cannot be considered as a special limitation on the present application.
  • the third lubricating layer 2363 is also formed. Therefore, there is no need to cover the third surface, and the processing process is simple and the operation is convenient.
  • the second lubricating layer 2362 is disposed on the surface of the first cantilever portion 2342 in an adhesive manner, the third lubricating layer 2363 can be fixed to the third surface in an adhesive manner, and at the same time, the second lubricating layer 2362 and the third lubricating layer 2362 can be bonded together.
  • the layer 2363 is designed as a whole film to increase the bonding area between the lubricating structure 236 and the first auxiliary support 234, improve the bonding strength, and extend the service life.
  • first gap d1 There may be structural parts such as a swing arm and a rotating shaft in the above-mentioned first gap d1.
  • the second cantilever section 2342b also slides relative to the swing arm, rotating shaft and other structural components in the first gap d1, which will also generate noise.
  • the lubricating structure 236 may also be disposed between the second cantilever section 2342 b and the first gap d1 .
  • the first lubricating layer 2361 has an extension portion 2361a.
  • the extension portion 2361a is located on the surface of the second cantilever section 2342b facing the first gap d1.
  • the extension portion 2361a forms a second Part of the lubrication structure 236 between the cantilever section 2342b and the first gap d1.
  • the partial lubrication structure 236 between the second cantilever section 2342b and the first gap d1 can also be in other structural forms, and is not specifically limited here.
  • the lubricating structure 236 is also used to lubricate the second cantilever section 2342b and the swing arm, rotating shaft and other structural components in the first gap d1 to prevent the second cantilever section 2342b from interfering with the structural components in the first gap d1. Noise is generated due to scratches, thereby further improving the user experience of folding screen devices.
  • the lubrication structure 236 can also be disposed at other positions, such as It is provided on the part of the first cantilever part 2342 that is opposite to the second main support member 232 (as shown in FIG. 8, FIG. 9 or FIG. 10), or is provided on the first connecting part 2341, which is not specifically limited here.
  • an additional auxiliary support member may be provided on the front side of the second gap d2 .
  • FIG. 11 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 in addition to the first main support member 231 , the second main support member 232 , the third main support member 233 and the first auxiliary support member 234 , the rotating shaft device 23 also includes a second auxiliary support member 235 .
  • the second auxiliary support member 235 may have the same structural form and material as the first auxiliary support member 234, and is not specifically limited here.
  • the second auxiliary support 235 includes a second connection part 2351 and a second cantilever part 2352 that are fixedly connected.
  • the second connection portion 2351 is located on the front side of the third main support member 233 , that is, the second connection portion 2351 is located on the side toward which the third support surface m3 of the third main support member 233 faces, and the second connection portion 2351
  • the orthographic projection on the third support surface m3 is located within the third support surface m3.
  • the second connecting portion 2351 is connected to the third main support member 233 .
  • the connection method of the second connecting portion 2351 on the third main support member 233 can be the same as the connection method of the aforementioned first connecting portion 2341 on the second main support member 232, which will not be described again here.
  • the second cantilever portion 2352 is in a cantilever shape.
  • the second cantilever portion 2352 includes a third cantilever section 2352a.
  • the third cantilever section 2352a means: when the rotating shaft device 23 is in the unfolded state, the second cantilever portion 2352 is located on the side facing the third support surface m3, and the orthographic projection on the third support surface m3 is located on the third support surface. The part within face m3.
  • the second auxiliary support member 235 spans the second gap d2, and at least a part of the second auxiliary support member 235 covers the second gap d2.
  • the second cantilever portion 2352 may also include a fourth cantilever section 2352b.
  • the fourth cantilever section 2352b is located between the second connecting portion 2351 and the third cantilever section 2352a.
  • the fourth cantilever section 2352b refers to: when the rotating shaft device 23 is in the unfolded state, the second cantilever portion 2352 is located on the side of the second gap d2 facing the folding screen 10, and the projection along the Z-axis direction in the second gap d2 is located at The part within the second gap d2.
  • the fourth cantilever section 2352b covers the second gap d2.
  • the folding screen 10 is also located on the second auxiliary support 235 away from the first main support 231 and the third main support 233.
  • the rotating shaft device 23 uses the fourth cantilever section 2352b of the second auxiliary support member 235 to support the portion of the folding screen 10 opposite to the second gap d2, which can improve the support performance of the rotating shaft device 23.
  • FIG. 12 is a schematic structural diagram of the third main support member 233 in the rotating shaft device 23 shown in FIG. 11 when it rotates in the direction a1 from the unfolded position to the folded position relative to the first main support member 231 .
  • the entirety of the cantilever section 2352a slides to the right in direction a3 relative to the first main support 231 .
  • the lubrication structure 236 is also provided between at least part of the third cantilever section 2352a and the first main support 231 between.
  • the lubricating structure 236 is also used to lubricate the at least part of the third cantilever section 2352a and the first main support 231 to prevent the at least part of the third cantilever section 2352a from interfering with the first main support 231. Scratching will produce noise, thereby further improving the user experience of folding screen devices and enhancing product competitiveness.
  • part of the lubricating structure 236 may be disposed on the surface of the third cantilever section 2352a.
  • the arrangement of this part of the lubricating structure 236 on the surface of the third cantilever section 2352a is the same as the arrangement of the aforementioned lubricating structure 236 on the surface of the first cantilever section 2342a, and will not be described again here.
  • the lubricating structure 236 is also disposed between the fourth cantilever section 2352b and the second gap d2.
  • the partial lubrication structure 236 between the fourth cantilever section 2352b and the second gap d2 may be disposed on the surface of the fourth cantilever section 2352b facing the second gap d2.
  • the lubricating structure 236 is also used to lubricate the fourth cantilever section 2352b and the swing arm, rotating shaft and other structural parts in the second gap d2 to prevent the fourth cantilever section 2352b from interfering with the structural parts in the second gap d2. Noise is generated due to scratches, thereby further improving the user experience of folding screen devices.
  • the lubrication structure 236 can also be disposed at other positions, such as It is provided on the part of the second cantilever part 2352 that is opposite to the third main support member 233, or is provided on the second connecting part 2351, which is not specifically limited here.
  • the lubricating structure 236 may also have other structural forms.
  • FIG. 13 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the lubricating structure 236 includes a first lubricating film 236a and a second lubricating film 236b.
  • the first lubricating film 236a includes a first fixed section 236a1 and a first free section 236a2.
  • the first fixing section 236a1 is fixed on the surface of the first auxiliary support member 234 facing the first main support member 231 and the second main support member 232.
  • the first fixing section 236a1 can be fixed on the surface of the first connecting portion 2341 of the first auxiliary support member 234 facing the second main support member 232, and/or, fixed on the surface of the first cantilever portion 2342 located on
  • the front part of the second main support member 232 faces the surface of the second main support member 232, and/or is fixed to the surface of the second cantilever section 2342b that faces the first gap d1, and/or is fixed to the first cantilever section 2342a.
  • the surface facing the first main support member 231 is not specifically limited here.
  • the portion of the first cantilever portion 2342 located on the front side of the second main support member 232 refers to: the first cantilever portion 2342 is located on the front side of the second main support member 232 and is on the second support of the second main support member 232
  • the orthographic projection of the surface m2 is located within the second support surface m2.
  • the first free section 236a2 is located on the side of the first fixed section 236a1 close to the third main support member 233.
  • the second lubricating film 236b includes a second fixed section 236b1 and a second free section 236b2.
  • the second fixing section 236b1 is fixed on the surface of the second auxiliary support member 235 facing the first main support member 231 and the third main support member 233.
  • the second fixing section 236b1 can be fixed on the surface of the second connecting portion 2351 of the second auxiliary support 235 facing the third main support 233, and/or, fixed on the second cantilever portion 2352 located on the third main support.
  • the part on the front side of the member 233 faces the surface of the third main support member 233, and/or is fixed on the surface of the fourth cantilever section 2352b facing the second gap d2, and/or is fixed on the third cantilever section 2352a facing the first main support section 2352a.
  • the surface of the supporting member 231 is not specifically limited here.
  • the part of the second cantilever portion 2352 located on the front side of the third main support member 233 refers to: the second cantilever portion 2352 is located on the front side of the third main support member 233 and is on the third support of the third main support member 233
  • the orthographic projection of the surface m3 is located within the third support surface m3.
  • the second free section 236b1 is located on the side of the second fixed section 236b1 close to the second main support member 232.
  • the second free section 236b1 and the first free section 236a1 are stacked.
  • Figure 14 is a schematic structural diagram of the rotating shaft device 23 shown in Figure 13 when rotating from the unfolded state to the folded state.
  • the second main support member 232 and the third main support member 233 are relative to the first main support member.
  • the first lubricating film 236a and the second lubricating film 236b can slide relative to each other, which can prevent the first auxiliary support member 234 and the second auxiliary support member 235 from moving away from or approaching each other relative to each other. Make an impact.
  • the first lubricating film 236a and the second lubricating film 236b may have a smooth surface structure.
  • the lubricating structure 236 includes a third lubricating film 236c.
  • the third lubricating film 236c includes a first lubricating film area 236c1, a second lubricating film area 236c2, and a third lubricating film area 236c3.
  • the first lubricating film area 236c1 is fixed to the surface of the first auxiliary support 234 facing the first main support 231 and the second main support 232. Specifically, the first lubricating film area 236c1 can be fixed to the surface of the first connecting portion 2341 in the first auxiliary support 234 facing the second main support 232, and/or fixed to the surface of the first cantilever portion 2342 located on the second main support.
  • the front part of the support member 232 faces the surface of the second main support member 232, and/or is fixed on the surface of the second cantilever segment 2342b facing the first gap d1, and/or is fixed on the first cantilever segment 2342a facing the first gap d1.
  • the surface of the main support member 231 is not specifically limited here.
  • the second lubricating film area 236c2 is fixed to the surface of the second auxiliary support 235 facing the first main support 231 and the third main support 233.
  • the second lubricating film area 236c2 can be fixed to the surface of the second connecting portion 2351 of the second auxiliary support 235 facing the third main support 233, and/or fixed to the second cantilever portion 2352 located on the third main support.
  • the front part of the support member 233 faces the surface of the third main support member 233, and/or is fixed on the surface of the fourth cantilever segment 2352b facing the second gap d2, and/or is fixed on the third cantilever segment 2352a facing the first gap d2.
  • the surface of the main support member 231 is not specifically limited here.
  • the third lubricating film area 236c3 is connected between the first lubricating film area 236c1 and the second lubricating film area 236c2, and points from the first lubricating film area 236c1 to the direction of the second lubricating film area 236c2.
  • the third lubricating film area 236c3 can be elastic. Telescopic.
  • at least a certain section or the entire third lubricating film area 236c3 of the third lubricating film 236c is a soft elastic structure.
  • the material of the soft elastic structure includes but is not limited to polyurethane, rubber, latex, etc. Elastic material.
  • the first lubricating film area 236c1 and the second lubricating film area 236c2 may have a smooth surface structure or a soft elastic structure.
  • the first lubricating film area 236c1, the second lubricating film area 236c2, and the third lubricating film area 236c3 are all soft elastic structures and have the same material. In this way, the first lubricating film area 236c1, the second lubricating film area 236c2, and the third lubricating film area 236c3 can be integrally formed, thereby reducing the structural complexity of the third lubricating film 236c.
  • Figure 16 shows the rotating shaft device 23 shown in Figure 15 rotating from the unfolded state to the folded state.
  • the third lubricating film area 236c3 elastically expands and contracts, thereby avoiding damage to the first main support member 236c3.
  • the relative moving away from or approaching the auxiliary support member 234 and the second auxiliary support member 235 has an impact.
  • the rotating shaft device 23 in this embodiment can simultaneously lubricate the first auxiliary support 234 and the second auxiliary support 235 with the help of the third lubricating film 236c, and reduce noise. Therefore, the structure of the rotating shaft device 23 Simple and easy to implement.
  • the lubricating structure 236 may further include a fourth lubricating film (not shown in the figure) and a fifth lubricating film (not shown in the figure).
  • One end of the fourth lubricating film is fixed on the surface of the first auxiliary support member 234 facing the first main support member 231 and the second main support member 232 , and the other end is fixed on the first main support member 231 .
  • the fourth lubricating film is elastically stretchable from one end where the first auxiliary support member 234 is fixed to an end where the first main support member 231 is fixed.
  • a certain section or the entirety of the fourth lubricating film is a soft elastic structure.
  • the materials of the soft elastic structure include but are not limited to elastic materials such as polyurethane, rubber, and latex.
  • One end of the fifth lubricating film is fixed on the surface of the second auxiliary support member 235 facing the first main support member 231 and the third main support member 233 , and the other end is fixed on the first main support member 231 .
  • the fifth lubricating film is elastically stretchable from one end where the second auxiliary support member 235 is fixed to an end where the first main support member 231 is fixed.
  • the area of the first auxiliary support member 234 may also be increased, so that the first auxiliary support member 234 While covering the first gap d1, the second gap d2 can also be covered.
  • FIG. 17 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the first cantilever portion 2342 further includes a fifth cantilever section 2342c.
  • the fifth cantilever section 2342c is located on the side of the first cantilever section 2342a away from the first connecting portion 2341.
  • the fifth cantilever section 2342c means: when the rotating shaft device 23 is in the unfolded state, the first cantilever portion 2342 is located on the side facing the third support surface m3, and the orthographic projection on the third support surface m3 is located on the third support The part within face m3.
  • the first auxiliary support member 234 not only spans the first gap d1, but also spans the second gap d2. superior.
  • the first cantilever portion 2342 may also include a sixth cantilever section 2342d.
  • the sixth cantilever section 2342d is located between the first cantilever section 2342a and the fifth cantilever section 2342c.
  • the sixth cantilever section 2342d refers to: when the rotating shaft device 23 is in the unfolded state, the first cantilever portion 2342 is located on the side of the second gap d2 facing the folding screen 10, and the projection along the Z-axis direction in the second gap d2 is located at The part within the second gap d2.
  • the sixth cantilever section 2342d covers the second gap d2.
  • the rotating shaft device 23 is applied to the folding screen device 100, the folding screen 10 is located on the side of the first auxiliary support member 234 away from the first main supporting member 231, the second main supporting member 232 and the third main supporting member 233.
  • the rotating shaft device 23 is 23
  • the sixth cantilever section 2342d of the first auxiliary support member 234 is also used. , to improve the support strength of the portion of the folding screen 10 that is opposite to the second gap d2.
  • FIG. 18 shows the rotation of the second main support member 232 and the third main support member 233 in the rotating shaft device 23 shown in FIG. 17 relative to the first main support member 231 along the direction a1 from the unfolded position to the folded position.
  • part of the first cantilever section 2342a slides to the left along the direction a2 relative to the first main support member 231, and the entirety of the fifth cantilever section 2342c slides to the left and downward along the direction a4.
  • scratches are generated between part of the first cantilever section 2342a and the first main support member 231, and between the entire fifth cantilever section 2342c and the third main support member 233, and noise is generated, causing the folding screen device to The user experience is low.
  • Figure 19 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the lubrication structure 236 provided on the first cantilever section 2342a In addition to the space between the at least part of the fifth cantilever section 2342c and the first main support member 231, it is also provided between the at least part of the fifth cantilever section 2342c and the third main support member 233.
  • At least part of the fifth cantilever section 2342c and the third main support member 233 are also lubricated by the lubricating structure 236 to prevent at least part of the fifth cantilever section 2342c from being scratched on the third main support member 233. Generate noise to further enhance the user experience of folding screen devices.
  • the lubricating structure 236 may be disposed between at least part of the first cantilever section 2342a and the first main support 231 and also be disposed between at least a part of the fifth cantilever section 2342c and the third cantilever section 2342c. between the main support members 233; or, between at least a portion of the first cantilever section 2342a and the first main support member 231, but not between at least a portion of the fifth cantilever section 2342c and the third main support member 233. or, between at least part of the fifth cantilever section 2342c and the third main support 233, but not between at least part of the first cantilever section 2342a and the first main support 231.
  • the lubricating structure 236 is also disposed between the sixth cantilever section 2342d and the second gap d2. Specifically, part of the lubricating structure 236 may be disposed on the surface of the sixth cantilever section 2342d facing the second gap d2.
  • the lubrication structure 236 is also used to lubricate the sixth cantilever section 2342d and the swing arm, rotating shaft and other structural parts in the second gap d2 to prevent the sixth cantilever section 2342d from interfering with the structural parts in the second gap d2. Noise is generated due to scratches, thereby further improving the user experience of folding screen devices.
  • the lubrication structure 236 is disposed between at least the above-mentioned part of the first cantilever section 2342a and the first main support 231, between the second cantilever section 2342b and the first gap d1, and on the upper surface of the fifth cantilever section 2342c.
  • it can also be arranged at other positions, such as at the fifth cantilever section 2342c away from the first cantilever section 2342a.
  • One end surface of the fifth cantilever section 2342c (as shown in Figure 20), or is provided on the surface of the fifth cantilever section 2342c facing away from the third main support member 233 (as shown in Figure 21), which is not specifically limited here.
  • the lubrication structure 236 may include a fourth lubrication layer 2364.
  • the fourth lubricating layer 2364 is provided on the supporting surface of the first main supporting member 231 (that is, the aforementioned first supporting surface m1).
  • the fourth lubricating layer 2364 is lubricated to prevent noise from being scratched between the first cantilever section 2342a and the first main support 231 and between the third cantilever section 2352a and the first main support 231, thereby improving the user experience of the folding screen device. experience.
  • lubrication can be achieved simultaneously between the first auxiliary support member 234 and the first main support member 231, and between the second auxiliary support member 235 and the first main support member 231, which is beneficial to The structural complexity of the rotating shaft device 23 is reduced.
  • the first connecting portion 2341 is located on the front side of the second main support member 232 and connected to the second main support member 232, and the first cantilever portion 2342
  • the cantilever section 2342a is located on the front side of the first main support 231 .
  • the positions of the first connecting portion 2341 and the first cantilever section 2342a may be interchanged.
  • FIG. 23 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the first connecting portion 2341 is located on the side facing the first supporting surface m1 and is connected to the first main support member 231.
  • the first cantilever section 2342a of the first cantilever portion 2342 refers to: when the rotating shaft device 23 is in the deployed state, the portion of the first cantilever portion 2342 is located on the side facing the second support surface m2, and the orthographic projection on the second support surface m2 is located within the second support surface m2.
  • the first auxiliary support member 234 also spans the first gap d1, and at least a part of the first auxiliary support member 234 covers the first gap d1.
  • the second cantilever section 2342b of the first cantilever portion 2342 is located on the side of the first gap d1 facing the folding screen 10, and when the rotating shaft device 23 is in the unfolded state, the second cantilever section 2342b moves in the first gap along the Z-axis direction.
  • the projection within d1 is located within the first gap d1.
  • the rotating shaft device 23 also uses the second cantilever section 2342b to support the portion of the folding screen 10 opposite to the first gap d1, which can improve the supporting performance of the rotating shaft device 23.
  • the whole or part (that is, at least part) of the first cantilever section 2342a contacts the second main support member 232 and slides relative to the second main support member 232, while the second cantilever section 2342b is in contact with the first main support member 232.
  • the swing arm, rotating shaft and other structural parts in the gap d1 are in contact with each other and produce relative sliding. During the sliding process, noise is generated due to scratching.
  • FIG. 24 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 also includes a lubricating structure 236 .
  • the lubricating structure 236 is disposed between at least the above-mentioned portion of the first cantilever section 2342a and the second main support 232.
  • the lubricating structure 236 may be a smooth surface structure, that is, the lubricating structure 236 may be a structure with a surface friction coefficient less than 0.25. Specifically, the surface friction coefficient of the lubrication structure 236 can be 0.24, 0.23, 0.2, 0.1, 0.05, 0.02 or 0.01 etc.
  • the material of the lubricating structure 236 includes but is not limited to compounds containing fluorine. In an example, the material of the lubricating structure 236 is polytetrafluoroethylene. In some other embodiments, the material of the lubricating structure 236 may also be polyoxymethylene (POM). In this way, the lubricating structure 236 achieves the purpose of reducing noise by reducing the surface friction coefficient.
  • POM polyoxymethylene
  • the lubricating structure 236 may also be a soft elastic structure.
  • the material of the lubricating structure 236 includes, but is not limited to, elastic materials such as polyurethane, rubber, and latex. In this way, the lubricating structure 236 achieves the purpose of reducing noise by avoiding hard contact between the two structures that rub against each other.
  • the lubricating structure 236 is used to lubricate at least a portion of the first cantilever section 2342a and the second main support 232 to prevent friction between at least a portion of the first cantilever section 2342a and the second main support 232. And generate noise, thereby improving the user experience of folding screen devices.
  • the arrangement of the lubrication structure 236 between at least part of the first cantilever section 2342a and the second main support 232 can be the same as in the previous embodiment, the lubrication structure 236 is between
  • the arrangement between at least part of the first cantilever section 2342a and the first main support member 231 is similar and will not be described again.
  • the lubricating structure 236 can also Disposed between the second cantilever section 2342b and the first gap d1. In this way, the lubricating structure 236 is also used to lubricate the second cantilever section 2342b and the swing arm, rotating shaft and other structural components in the first gap d1 to prevent the second cantilever section 2342b from interfering with the structural components in the first gap d1. Noise is generated due to scratches, thereby further improving the user experience of folding screen devices.
  • FIG. 25 is a schematic structural diagram of the rotating shaft device 23 provided in some embodiments of the present application.
  • the rotating shaft device 23 further includes a second auxiliary support member 235 .
  • the second auxiliary support 235 includes a second connection part 2351 and a second cantilever part 2352 that are fixedly connected.
  • the second connection part 2351 is located on the side facing the first support surface m1 and is connected to the first main support member 231.
  • the second cantilever part 2352 includes a third cantilever section 2352a.
  • the third cantilever section 2352a of the second cantilever part 2352 It refers to: when the rotating shaft device 23 is in the unfolded state, the portion of the second cantilever portion 2352 is located on the side facing the third support surface m3, and the orthographic projection on the third support surface m3 is located within the third support surface m3. .
  • the second auxiliary support member 235 also spans the second gap d2, and at least a part of the second auxiliary support member 235 covers the second gap d2.
  • the second cantilever portion 2352 may also include a fourth cantilever section 2352b.
  • the fourth cantilever section 2352b is located on the side of the second gap d2 facing the folding screen 10, and when the rotating shaft device 23 is in the unfolded state, the projection of the fourth cantilever section 2352b along the Z-axis direction in the second gap d2 is located in the second gap d2. Inside. In this way, the rotating shaft device 23 uses the fourth cantilever section 2352b to support the portion of the folding screen 10 opposite to the second gap d2, which can improve the supporting performance of the rotating shaft device 23.
  • the whole or part (that is, at least part) of the third cantilever segment 2352a contacts the third main support member 233 and slides relative to the third main support member 233.
  • the fourth cantilever segment 2352b is in contact with the second main support member 233.
  • the swing arm, rotating shaft and other structural parts in the gap d2 are in contact with each other and produce relative sliding. During the sliding process, noise is generated due to scratching.
  • the lubricating structure 236 is also disposed between at least part of the third cantilever section 2352a and the third main support 233 .
  • the lubricating structure 236 is used to lubricate at least a portion of the third cantilever section 2352a and the third main support 233 to prevent friction between at least a portion of the third cantilever section 2352a and the third main support 233. And generate noise, thereby further improving the user experience of folding screen devices.
  • the arrangement of the lubrication structure 236 between at least part of the third cantilever section 2352a and the third main support 233 can be the same as in the previous embodiment, the lubrication structure 236 is between
  • the arrangement between at least part of the first cantilever section 2342a and the first main support member 231 is similar and will not be described again.
  • the lubrication structure 236 in order to avoid noise caused by relative sliding between the fourth cantilever section 2352b and the swing arm, rotating shaft and other structural parts in the second gap d2, in some embodiments, please continue to refer to Figure 25, the lubrication structure 236 also It can be disposed between the fourth cantilever section 2352b and the second gap d2. In this way, the lubricating structure 236 is also used to lubricate the fourth cantilever section 2352b and the swing arm, rotating shaft and other structural parts in the second gap d2 to prevent the fourth cantilever section 2352b from interfering with the structural parts in the second gap d2. Noise is generated due to scratches, thereby further improving the user experience of folding screen devices.

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Abstract

本申请提供一种转轴装置、支撑***和折叠屏设备，涉及可折叠电子产品技术领域，用于解决如何降低折叠屏设备内转轴装置在运动过程中产生的噪音的问题。其中，转轴装置包括第一主支撑件、第二主支撑件、第一副支撑件和润滑结构。第一主支撑件具有第一支撑面，第二主支撑件具有第二支撑面，第二主支撑件能够相对于第一主支撑件在展开位置与折叠位置之间转动。第一副支撑件包括第一连接部和第一悬臂部，第一连接部位于第二支撑面所朝向的一侧并连接于第二主支撑件上，第一悬臂部包括第一悬臂段，第一悬臂段位于第一支撑面所朝向的一侧。润滑结构至少设置于第一悬臂段的至少部分与第一主支撑件之间。本申请提供的转轴装置用于实现折叠屏的折叠。

Description

一种转轴装置、支撑***和折叠屏设备
本申请要求于2022年06月23日提交国家知识产权局、申请号为202210720781.6、发明名称为“一种转轴装置、支撑***和折叠屏设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及可折叠电子产品技术领域，尤其涉及一种转轴装置、支撑***和折叠屏设备。
背景技术
目前，为了解决传统平板设备尺寸大、不方便携带的问题，折叠屏设备应运而生。折叠屏设备的支撑***包括两侧壳体以及连接于两侧壳体之间的转轴装置。在电子设备折叠过程中，两侧壳体相对于转轴装置转动，转轴装置内零部件产生了相对运动和剐蹭，容易产生噪音，导致折叠屏设备的用户体验较低。
发明内容
本申请实施例提供一种转轴装置、支撑***和折叠屏设备，用于解决如何降低折叠屏设备内转轴装置在运动过程中产生的噪音的问题。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供了一种转轴装置，该转轴装置包括第一主支撑件、第二主支撑件、第一副支撑件和润滑结构。第一主支撑件具有第一支撑面，第二主支撑件具有第二支撑面，第一支撑面和第二支撑面均用于支撑部分折叠屏。第二主支撑件能够相对于第一主支撑件在展开位置与折叠位置之间转动。第一副支撑件包括固定连接的第一连接部和第一悬臂部，第一连接部位于第二支撑面所朝向的一侧并连接于第二主支撑件上，第一悬臂部包括第一悬臂段，第一悬臂段位于第一支撑面所朝向的一侧，当第二主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第一悬臂段的至少部分相对于第一主支撑件滑动。润滑结构至少设置于第一悬臂段的该至少部分与第一主支撑件之间。
其中，润滑结构可以为表面爽滑结构，也即是，润滑结构可以为表面摩擦系数小于0.25的一类结构。具体的，润滑结构为表面摩擦系数可以为0.24、0.23、0.2、0.1、0.05、0.02或者0.01等等。在此基础上，润滑结构的材料包括但不限于含有氟元素的化合物，示例的，润滑结构的材料为聚四氟乙烯。在其他一些实施例中，润滑结构的材料也可以为聚甲醛(polyoxymethylene，POM)。这样，润滑结构通过减小表面摩擦系数，来达到降低噪声的目的。
润滑结构也可以为软质弹性结构。润滑结构的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。这样，润滑结构通过避免相互剐蹭的两个结构之间硬接触，来达到降低噪声的目的。
这样一来，第一悬臂段的上述至少部分与第一主支撑件之间借助润滑结构进行润滑，防止第一悬臂段的该至少部分与第一主支撑件之间因剐蹭而产生噪声，从而提升 折叠屏设备的用户体验。
在第一方面的一种可能的实现方式中，第二主支撑件与第一主支撑件之间，以及第三主支撑件与第一主支撑件之间可以借助转轴直接可转动连接，也可以借助铰链机构、四杆机构等中间传动机构可转动连接，还可以借助皮革、布料等软质材料可转动连接，在此不做具体限定。
在第一方面的一种可能的实现方式中，第一副支撑件呈片状，当第二主支撑件相对于第一主支撑件处于展开状态时，第一副支撑件与第一支撑面和第二支撑面层叠设置。第一副支撑件的厚度大于或者等于0.02mm，且小于或者等于0.1mm。这样一来，可以减小转轴装置的厚度，有利于折叠屏设备在展开状态或者折叠状态下的薄型化，同时可以保证第一副支撑件的保证结构强度。
在第一方面的一种可能的实现方式中，润滑结构的材料为含氟元素的化合物。
在第一方面的一种可能的实现方式中，润滑结构的材料为聚四氟乙烯或者聚甲醛。
在第一方面的一种可能的实现方式中，润滑结构包括第一润滑层。第一润滑层设置于第一悬臂段的上述至少部分朝向第一主支撑件的表面。此结构简单，润滑结构的设置区域较小，成本较低。
在第一方面的一种可能的实现方式中，第一悬臂段的远离第一连接部的一端为第一端，第一端形成第一悬臂部的远离第一连接部的一端。润滑结构还包括第二润滑层。第二润滑层设置于第一端的端面。这样一来，第一悬臂段与第一主支撑件之间可以借助第二润滑层润滑，能够在一定程度上降低噪声。
在第一方面的一种可能的实现方式中，润滑结构还包括第三润滑层。第三润滑层设置于第一悬臂段的背对第一主支撑件的表面。这样一来，在采用喷涂、淋涂、电化学沉积、电镀等工艺成型第二润滑层的过程中，也一并成型第三润滑层，因此无需遮盖第三表面，加工过程简单，操作方便。当采用胶粘方式在第一悬臂部的表面设置第二润滑层时，可以采用胶粘方式将第三润滑层固定于第三表面，同时可以将第二润滑层与第三润滑层设计成一个薄膜整体，以增大润滑结构与第一副支撑件之间的粘接面积，提高粘接强度，延长使用寿命。
在第一方面的一种可能的实现方式中，第一主支撑件与第二主支撑件之间具有第一空隙。第一悬臂部还包括第二悬臂段，第二悬臂段位于第一空隙朝向折叠屏的一侧。润滑结构还设置于第二悬臂段与第一空隙之间。这样一来，第二悬臂段与第一空隙内的摆臂、转轴等结构件之间还借助润滑结构进行润滑，防止第二悬臂段与第一空隙内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第一方面的一种可能的实现方式中，转轴装置还包括第三主支撑件和第二副支撑件。第三主支撑件位于第一主支撑件的远离第二主支撑件的一侧。第三主支撑面具有第三支撑面，第三支撑面也用于支撑部分折叠屏。第三主支撑件也能够相对于第一主支撑件在展开位置与折叠位置之间转动。第二副支撑件包括固定连接的第二连接部和第二悬臂部，第二连接部位于第三支撑面所朝向的一侧并连接于第三主支撑件上，第二悬臂部包括第三悬臂段，该第三悬臂段位于第一支撑面所朝向的一侧，当第三主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第三悬臂段的至少部分相对于第一主支撑件滑动。润滑结构还至少设置于第三悬臂段的该至少部分与第一 主支撑件之间。这样一来，第三悬臂段的该至少部分与第一主支撑件之间也借助润滑结构进行润滑，防止第三悬臂段的该至少部分与第一主支撑件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第一方面的一种可能的实现方式中，第一主支撑件与第三主支撑件之间具有第二空隙。第二悬臂部还包括第四悬臂段，第四悬臂段位于第二空隙朝向折叠屏的一侧。润滑结构还设置于第四悬臂段与第二空隙之间。这样一来，第四悬臂段与第二空隙内的摆臂、转轴等结构件之间还借助润滑结构进行润滑，防止第四悬臂段与第二空隙内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第一方面的一种可能的实现方式中，润滑结构包括第一润滑膜和第二润滑膜。第一润滑膜包括第一固定段和第一自由段，第一固定段固定于第一副支撑件朝向第一主支撑件和第二主支撑件的表面，第一自由段位于第一固定段靠近第三主支撑件的一侧。第二润滑膜包括第二固定段和第二自由段，第二固定段固定于第二副支撑件朝向第一主支撑件和第三主支撑件的表面，第二自由段位于第二固定段靠近第二主支撑件的一侧。第二自由段与第一自由段层叠设置。这样一来，第一润滑膜和第二润滑膜交错设置，能够起到润滑的作用，并降低噪声。同时，第二主支撑件和第三主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第一润滑膜和第二润滑膜可以产生相对滑动，可以避免对第一副支撑件和第二副支撑件的相对远离或者靠近运动产生影响。
在第一方面的一种可能的实现方式中，润滑结构包括第三润滑膜。第三润滑膜包括第一润滑膜区域、第二润滑膜区域和第三润滑膜区域。第一润滑膜区域固定于第一副支撑件朝向第一主支撑件和第二主支撑件的表面，第二润滑膜区域固定于第二副支撑件朝向第一主支撑件和第三主支撑件的表面，第三润滑膜区域连接于第一润滑膜区域与第二润滑膜区域之间。由第一润滑膜区域指向第二润滑膜区域的方向，第三润滑膜区域可弹性伸缩。这样一来，当第二主支撑件和第三主支撑件由展开位置向折叠位置转动时，第三润滑膜区域处于拉伸状态并积蓄弹性力，当第二主支撑件和第三主支撑件由折叠位置向展开位置转动时，第三润滑膜区域在积蓄的弹性力下收缩。由此，第二主支撑件和第三主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第三润滑膜区域产生弹性伸缩，可以避免对第一副支撑件和第二副支撑件的相对远离或者靠近运动产生影响。同时，本实施例所述转轴装置借助第三润滑膜可以同时对第一副支撑件和第二副支撑件起到润滑的作用，并降低噪声，因此，转轴装置的组成结构简单，容易实现。
在第一方面的一种可能的实现方式中，润滑结构还可以包括第四润滑膜和第五润滑膜。第四润滑膜的一端固定于第一副支撑件朝向第一主支撑件和第二主支撑件的表面，另一端固定于第一主支撑件上。第四润滑膜由固定第一副支撑件的一端至固定第一主支撑件的一端可弹性伸缩。一些实施例中，第四润滑膜的某一段或者整体为软质弹性结构，具体的，软质弹性结构的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。第五润滑膜的一端固定于第二副支撑件朝向第一主支撑件和第三主支撑件的表面，另一端固定于第一主支撑件上。第五润滑膜由固定第二副支撑件的一端至固定第一主支撑件的一端可弹性伸缩。这样一来，当第二主支撑件和第三主支撑件 由展开位置向折叠位置转动时，第四润滑膜和第五润滑膜弹性伸缩，可以避免对第一副支撑件和第二副支撑件的相对远离或者靠近运动产生影响。
在第一方面的一种可能的实现方式中，转轴装置还包括第三主支撑件。第三主支撑件位于第一主支撑件的远离第二主支撑件的一侧。第三主支撑面具有第三支撑面，第三支撑面也用于支撑部分折叠屏。第三主支撑件也能够相对于第一主支撑件在展开位置与折叠位置之间转动。第一悬臂部还包括第五悬臂段，第五悬臂段位于第一悬臂段远离第一连接部的一侧，第五悬臂段位于第三支撑面所朝向的一侧。润滑结构还设置于第五悬臂段的至少部分与第三主支撑件之间。这样一来，第五悬臂段的该至少部分与第三主支撑件之间也借助润滑结构润滑，防止第五悬臂段的该至少部分与第三主支撑件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第一方面的一种可能的实现方式中，润滑结构包括第四润滑层。第四润滑层设置于第一支撑面上。这样一来，第一副支撑件的第一悬臂段与第一主支撑件之间，以及第二副支撑件的第三悬臂段与第一主支撑件之间可以借助第四润滑层润滑，防止第一悬臂段与第一主支撑件之间，以及第三悬臂段与第一主支撑件之间因剐蹭而产生噪声，从而提升折叠屏设备的用户体验。而且借助第四润滑层，即可同时实现第一副支撑件与第一主支撑件之间，以及第二副支撑件与第一主支撑件之间的润滑，因此有利于降低转轴装置的结构复杂度。
第二方面，还提供了一种转轴装置，该转轴装置包括第一主支撑件、第二主支撑件、第一副支撑件和润滑结构。第一主支撑件具有第一支撑面，第二主支撑件具有第二支撑面，第一支撑面和第二支撑面均用于支撑部分折叠屏。第二主支撑件能够相对于第一主支撑件在展开位置与折叠位置之间转动。第一副支撑件包括固定连接的第一连接部和第一悬臂部，第一连接部位于第一支撑面所朝向的一侧并连接于第一主支撑件上，第一悬臂部包括第一悬臂段，第一悬臂段位于第二支撑面所朝向的一侧，当第二主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第一悬臂段的至少部分相对于第二主支撑件滑动。润滑结构至少设置于第一悬臂段的该至少部分与第二主支撑件之间。
其中，润滑结构可以为表面爽滑结构，也即是，润滑结构可以为表面摩擦系数小于0.25的一类结构。具体的，润滑结构为表面摩擦系数可以为0.24、0.23、0.2、0.1、0.05、0.02或者0.01等等。在此基础上，润滑结构的材料包括但不限于含有氟元素的化合物，示例的，润滑结构的材料为聚四氟乙烯。在其他一些实施例中，润滑结构的材料也可以为聚甲醛(polyoxymethylene，POM)。这样，润滑结构通过减小表面摩擦系数，来达到降低噪声的目的。
润滑结构也可以为软质弹性结构。润滑结构的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。这样，润滑结构通过避免相互剐蹭的两个结构之间硬接触，来达到降低噪声的目的。
这样一来，第一悬臂段的上述至少部分与第二主支撑件之间借助润滑结构进行润滑，防止第一悬臂段的上述至少部分与第二主支撑件之间因剐蹭而产生噪声，从而提升折叠屏设备的用户体验。
在第二方面的一种可能的实现方式中，第一主支撑件与第二主支撑件之间具有第 一空隙。第一悬臂部还包括第二悬臂段，该第二悬臂段位于第一空隙朝向折叠屏的一侧。润滑结构还设置于第二悬臂段与第一空隙之间。这样一来，第二悬臂段与第一空隙内的摆臂、转轴等结构件之间还借助润滑结构进行润滑，防止第二悬臂段与第一空隙内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第二方面的一种可能的实现方式中，转轴装置还包括第三主支撑件和第二副支撑件。第三主支撑件位于第一主支撑件的远离第二主支撑件的一侧。第三主支撑面具有第三支撑面，第三支撑面也用于支撑部分折叠屏。第三主支撑件也能够相对于第一主支撑件在展开位置与折叠位置之间转动。第二副支撑件包括固定连接的第二连接部和第二悬臂部，第二连接部位于第一支撑面所朝向的一侧并连接于第一主支撑件上，第二悬臂部包括第三悬臂段，该第三悬臂段位于第三支撑面所朝向的一侧，当第三主支撑件相对于第一主支撑件在展开位置与折叠位置之间转动时，第三悬臂段的至少部分相对于第三主支撑件滑动。润滑结构还至少设置于第三悬臂段的该至少部分与第三主支撑件之间。
这样一来，第三悬臂段的上述至少部分与第三主支撑件之间借助润滑结构进行润滑，防止第三悬臂段的上述至少部分与第三主支撑件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在第二方面的一种可能的实现方式中，第一主支撑件与第三主支撑件之间具有第二空隙。第二悬臂部还包括第四悬臂段，该第四悬臂段位于第二空隙朝向折叠屏的一侧。润滑结构还设置于第四悬臂段与第二空隙之间。这样一来，第四悬臂段与第二空隙内的摆臂、转轴等结构件之间还借助润滑结构进行润滑，防止第四悬臂段与第二空隙内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
第三方面，还提供一种支撑***，该支撑***包括第一壳体、第二壳体和如上任一技术方案所述的转轴装置。转轴装置连接于第一壳体与第二壳体之间。
由于本申请实施例提供的支撑***包括如上任一技术方案所述的转轴装置，因此二者能够解决相同的问题，并达到相同的效果。
第四方面，还提供一种折叠屏设备，该折叠屏设备包括折叠屏和如上技术方案所述的支撑***。折叠屏包括第一显示区域、第二显示区域和第三显示区域，第三显示区域连接于第一显示区域与第二显示区域之间。第一显示区域设置于第一壳体上，第二显示区域设置于第二壳体上。第三显示区域设置于转轴装置上。
由于本申请实施例提供的折叠屏设备包括如上任一技术方案所述的支撑***，因此二者能够解决相同的问题，并达到相同的效果。
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图1为本申请一些实施例提供的折叠屏设备在展开状态下的立体图；
图2为图1所示折叠屏设备的局部分解结构示意图；
图3为图1所示折叠屏设备处于折叠状态时的结构示意图；
图4为本申请一些实施例提供的转轴装置的结构示意图；
图5为图4所示转轴装置处于折叠状态时的结构示意图；
图6为本申请又一些实施例提供的转轴装置的结构示意图；
图7为图6所示转轴装置中第二主支撑件相对于第一主支撑件沿方向a1由展开位 置向折叠位置转动时的结构示意图；
图8为本申请又一些实施例提供的转轴装置的结构示意图；
图9为本申请又一些实施例提供转轴装置的结构示意图；
图10为本申请又一些实施例提供的转轴装置的结构示意图；
图11为本申请又一些实施例提供的转轴装置的结构示意图；
图12为图11所示转轴装置中第三主支撑件相对于第一主支撑件沿方向a1由展开位置向折叠位置转动时的结构示意图；
图13为本申请又一些实施例提供的转轴装置的结构示意图；
图14为图13所示转轴装置在由展开状态向折叠状态转动时的结构示意图；
图15为本申请又一些实施例提供的转轴装置的结构示意图；
图16为图15所示转轴装置在由展开状态向折叠状态转动时的结构示意图；
图17为本申请又一些实施例提供的转轴装置的结构示意图；
图18为图17所示转轴装置中第二主支撑件和第三主支撑件相对于第一主支撑件沿方向a1由展开位置向折叠位置转动时的结构示意图；
图19为本申请又一些实施例提供的转轴装置的结构示意图；
图20为本申请又一些实施例提供的转轴装置的结构示意图；
图21为本申请又一些实施例提供的转轴装置的结构示意图
图22为本申请又一些实施例提供的转轴装置的结构示意图；
图23为本申请又一些实施例提供的转轴装置的结构示意图；
图24为本申请又一些实施例提供的转轴装置的结构示意图；
图25为本申请又一些实施例提供的转轴装置的结构示意图。
具体实施方式
在本申请实施例中，术语“第一”、“第二”、“第三”、“第四”、“第五”、“第六”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”、“第四”、“第五”、“第六”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请实施例中，需要理解的是，术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请实施例中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
在本申请实施例中，“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请提供一种折叠屏设备，该折叠屏设备可以为用户设备(user equipment， UE)或者终端设备(terminal)等，例如，折叠屏设备可以为平板电脑(portable android device，PAD)、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备、车载设备、可穿戴设备、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等移动终端或固定终端。本申请实施例中对折叠屏设备的形态不做具体限定。
请参阅图1和图2，图1为本申请一些实施例提供的折叠屏设备100在展开状态下的立体图，图2为图1所示折叠屏设备100的局部分解结构示意图。本实施例以及下文各实施例是以折叠屏设备100为具有无线通信功能的手持设备进行示例性说明，该具有无线通信功能的手持设备例如可以是手机。折叠屏设备100在展开状态下近似呈矩形平板状。为了方便后文各实施例的描述，针对处于展开状态下的折叠屏设备100，建立XYZ坐标系，定义折叠屏设备100的长度方向为X轴方向，折叠屏设备100的宽度方向为Y轴方向，折叠屏设备100的厚度方向为Z轴方向。可以理解的是，折叠屏设备100的坐标系设置可以根据实际需要进行灵活设置，在此不做具体限定。在其他一些实施例中，折叠屏设备100的形状也可以为方形平板状、圆形平板状、椭圆形平板状等等。
折叠屏设备100包括折叠屏10和支撑***20。
在一些实施例中，请参阅图2，折叠屏10包括层叠设置的屏幕主体11和支撑结构12。屏幕主体11用于显示图像、视频等信息。具体的，屏幕主体11可以为有机发光二极管(organic light-emitting diode，OLED)屏幕，微型有机发光二极管(micro organic light-emitting diode)屏幕，量子点发光二极管(quantum dot light emitting diodes，QLED)屏幕，液晶显示屏(liquid crystal display，LCD)等等。屏幕主体11具有用于显示图像信息的显示面，屏幕主体11的显示面外露以便于向用户呈现图像、视频等信息。支撑结构12设置于屏幕主体11背对显示面的一侧，并与屏幕主体11层叠设置。支撑结构12也称为竹书，用于增加折叠屏10的结构强度，同时支撑结构12可以随着屏幕主体11一起被折叠。支撑结构12可以呈薄片状，且支撑结构12的材料包括但不限于金属以及含有纤维材料的复合材料。
请一并参阅图1和图2，折叠屏10包括第一显示区域10a、第二显示区域10b和第三显示区域10c。第一显示区域10a、第二显示区域10b和第三显示区域10c均由部分屏幕主体11以及与之相对的部分支撑结构12组成。第三显示区域10c连接于第一显示区域10a与第二显示区域10b之间。在图1所示折叠屏设备100中，折叠屏10处于展开状态，第一显示区域10a、第三显示区域10c、第二显示区域10b沿X轴方向依次排列，这样，折叠屏设备100沿横向折叠。在其他一些实施例中，当折叠屏10处于展开状态时，第一显示区域10a、第三显示区域10c、第二显示区域10b也可以沿Y轴方向依次排列。这样，折叠屏设备100沿纵向折叠。当折叠屏10处于展开状态时，能够实现大屏显示，以给用户提供更丰富的信息，带给用户更好的使用体验。
折叠屏10的至少第三显示区域10c为柔性屏结构。这样，第三显示区域10c受外力作用后可以发生弯曲变形，以使折叠屏10由图1所示展开状态折叠至折叠状态。折叠屏10的第一显示区域10a和第二显示区域10b可以为柔性屏结构，也可以为硬屏结构，还可以部分柔性屏结构、部分硬屏结构，在此不作具体限定。
请参阅图3，图3为图1所示折叠屏设备100处于折叠状态时的结构示意图，该折叠屏设备100中的折叠屏10也处于折叠状态。具体的，当折叠屏10处于折叠状态时，折叠屏10的第一显示区域10a与第二显示区域10b近似平行且相对。需要说明的是，第一显示区域10a与第二显示区域10b之间的夹角在30度(°)以内，均可以认为第一显示区域10a和第二显示区域10b近似平行。第一显示区域10a与第二显示区域10b相对是指第一显示区域10a的显示面与第二显示区域10b的显示面相面对。
一些实施例中，当折叠屏10处于折叠状态时，请继续参阅图3，第三显示区域10c被折叠成水滴形态，在此形态下，第三显示区域10c包括圆弧段10c3以及位于圆弧段10c3的相对两侧的第一过渡段10c1和第二过渡段10c2。第一过渡段10c1连接于圆弧段10c3与第一显示区域10a之间。第二过渡段10c2连接于圆弧段10c3与第二显示区域10b之间。第一过渡段10c1连接第一显示区域10a的一端与第二过渡段10c2连接第二显示区域10b的一端之间的距离为第三距离，第一过渡段10c1连接圆弧段10c3的一端与第二过渡段10c2连接圆弧段10c3的一端之间的距离为第四距离，第四距离大于第三距离。可以理解的是，当折叠屏设备处于折叠状态时，折叠屏10的第三显示区域10c根据实际需要，也可以折叠成其他形状，本申请对此不作限制。
当折叠屏设备100处于折叠状态时，请继续参阅图3，支撑***20保护于折叠屏10外，折叠屏10对用户不可见，可以防止折叠屏10被硬物刮伤，该折叠屏设备为内折折叠屏设备，且折叠屏设备100的尺寸减小，方便携带。
支撑***20用于承载折叠屏10。支撑***20包括第一壳体(也可以称为主壳体)21、第二壳体(也可以成为副壳体)22和转轴装置23。第一壳体21承载第一显示区域10a，第二壳体22承载第二显示区域10b。转轴装置23连接于第一壳体21与第二壳体22之间，并承载第三显示区域10c。转轴装置23用于实现第二壳体22与第一壳体21之间的旋转，以支持折叠屏10在展开状态与折叠状态之间折叠。
在上述实施例中，可选的，第一壳体21可以包括连接在一起的中框和背盖，折叠屏10的第一显示区域10a承载于第一壳体21的中框上，背盖位于中框远离第一显示区域10a的一侧，且背盖可以替换为显示屏(比如LCD显示屏)。中框与背盖之间形成容纳腔，该容纳腔用于容纳主板、摄像头模组、电池等电子元器件。在此基础上，第一壳体21可以借助中框与转轴装置23连接，也可以借助背盖与转轴装置23连接。
同样的，第二壳体22也可以包括连接在一起的中框和背盖，折叠屏10的第二显示区域10b承载于第二壳体22的中框上，背盖位于该中框远离第二显示区域10b的一侧，且背盖也可以替换为显示屏(比如LCD显示屏)。中框与背盖之间形成容纳腔，该容纳腔用于容纳副板、扬声器模组、阵子、电池等电子元器件。在此基础上，第二壳体22可以借助中框与转轴装置23连接，也可以借助背盖与转轴装置23连接。
请参阅图4，图4为本申请一些实施例提供的转轴装置23的结构示意图。转轴装置23包括第一主支撑件231、第二主支撑件232和第三主支撑件233。
第一主支撑件231、第二主支撑件232和第三主支撑件233的材料包括但不限于塑胶和金属。第一主支撑件231、第二主支撑件232和第三主支撑件233可以呈板状，也可以呈块状，等等，在此不作具体限定。
可以理解的是，图4示意性的示出了转轴装置23包括的一些部件，这些部件的实际形状、实际大小、实际位置和实际构造不受图4的限制。在其他一些示例中，转轴装置23还可以包括基座、轴盖和摆臂等结构。
第一主支撑件231用于承载部分折叠屏10。具体的，第一主支撑件231用于承载第三显示区域10c的圆弧段10c3。
第二主支撑件232和第三主支撑件233分别位于第一主支撑件231的相对两侧。第二主支撑件232和第三主支撑件233也用于承载部分折叠屏10。具体的，第二主支撑件232用于承载第三显示区域10c的第一过渡段10c1，第三主支撑件233用于承载第三显示区域10c的第二过渡段10c2。第二主支撑件232和第三主支撑件233均能够相对于第一主支撑件231在展开位置与折叠位置之间转动，以支持第三显示区域10c在展开状态与折叠状态之间折叠。
具体的，第一主支撑件231具有第一支撑面m1，第一主支撑件231借助第一支撑面m1支撑圆弧段10c3。第二主支撑件232具有第二支撑面m2，第二主支撑件232借助第二支撑面m2支撑第一过渡段10c1。第三主支撑件233具有第三支撑面m3，第三主支撑件233借助第三支撑面m3支撑第二过渡段10c2。图4所示转轴装置23处于展开状态，在此状态下，第二主支撑件232和第三主支撑件233处于展开位置，第一支撑面m1、第二支撑面m2和第三支撑面m3大致共面设置，也即是第一支撑面m1与第二支撑面m2之间的夹角大致呈180°，第一支撑面m1与第三支撑面m3之间的夹角也大致呈180°，以使支撑于其上的第三显示区域10c处于展开状态。当转轴装置23处于展开状态时，包括转轴装置23的支撑***20以及包括该支撑***20的折叠屏设备也处于展开状态，第一壳体21与第二壳体22之间的夹角，以及第一显示区域10a与第二显示区域10b之间的夹角也大致呈180°。
请参阅图5，图5为图4所示转轴装置23处于折叠状态时的结构示意图。在此状态下，第二主支撑件232和第三主支撑件233处于折叠位置，第二支撑面m2与第三支撑面m3相对设置，且第二支撑面m2和第三支撑面m3相对于第一支撑面m1倾斜或者垂直设置，以使支撑于其上的第三显示区域10c处于折叠状态。当转轴装置23处于折叠状态时，包括转轴装置23的支撑***20以及包括该支撑***20的折叠屏设备也处于折叠状态，第一壳体21与第二壳体22之间的夹角，以及第一显示区域10a与第二显示区域10b之间的夹角也大致呈0°。
一些实施例中，第二主支撑件232和第三主支撑件233由展开位置至折叠位置所转动的角度分别为θ1和θ2，在图5所示的实施例中，转动角度θ1和θ2均大于90°。这样，可以将第三显示区域10c折叠成水滴状。在其他一些实施例中，转动角度θ1和θ2也可以小于或者等于90°，以将第三显示区域10c折叠成其他形状，本申请对此不作具体限定。
第二主支撑件232与第一主支撑件231之间，以及第三主支撑件233与第一主支撑件231之间可以借助转轴直接可转动连接，也可以借助铰链机构、四杆机构等中间 传动机构可转动连接，还可以借助皮革、布料等软质材料可转动连接，在此不做具体限定。
假设第二主支撑件232相对于第一主支撑件231的转动轴线为第一轴线O1，第三主支撑件233相对于第一主支撑件231的转动轴线为第二轴线O2。
在一些实施例中，请参阅图4和图5，第二主支撑件232绕第一轴线O1在展开位置与折叠位置之间转动的过程中，还向靠近或者远离第一轴线O1的方向移动。比如，第二主支撑件232在绕第一轴线O1由展开位置向折叠位置转动时，还向远离第一轴线O1的方向移动。第二主支撑件232在绕第一轴线O1由折叠位置向展开位置转动时，还向靠近第一轴线O1的方向移动。同样的，第三主支撑件233绕第二轴线O2在展开位置与折叠位置之间转动的过程中，还向靠近或者远离第二轴线O2的方向移动。比如，第三主支撑件233在绕第二轴线O2由展开位置向折叠位置转动时，还向远离第二轴线O2的方向移动。第三主支撑件233在绕第二轴线O2由折叠位置向展开位置转动时，还向靠近第二轴线O2的方向移动。这样一来，当第二主支撑件232和第三主支撑件233由展开位置转动至折叠位置时，第一主支撑件231的位置可以相对于第一壳体和第二壳体下降一定高度，以避让第三显示区域10c，降低第三显示区域10c出现折叠损坏的可能性。
在其他一些实施例中，第二主支撑件232绕第一轴线O1在展开位置与折叠位置之间转动的过程中，也可以与第一轴线O1的距离保持不变。同理的，第三主支撑件233绕第二轴线O2在展开位置与折叠位置之间转动的过程中，也可以与第二轴线O2的距离保持不变，在此不做具体限定。
在一些实施例中，第二主支撑件232和第三主支撑件233在展开位置与折叠位置之间转动时，请参阅图4和图5，第一主支撑件231可以相对于第一轴线O1和第二轴线O2位置固定。此结构简单，容易实现。
在其他一些实施例中，第二主支撑件232和第三主支撑件233在展开位置与折叠位置之间转动时，第一主支撑件231也可以相对于第一轴线O1和第二轴线O2沿Z轴升降。比如，当第二主支撑件232和第三主支撑件233由展开位置向折叠位置转动时，第一主支撑件231相对于第一轴线O1和第二轴线O2沿Z轴下降；当第二主支撑件232和第三主支撑件233由折叠位置向展开位置转动时，第一主支撑件231相对于第一轴线O1和第二轴线O2沿Z轴上升。本申请对此不做具体限定，只要第二主支撑件232和第三主支撑件233能够相对于第一主支撑件231转动即可。
在一些实施例中，请参阅图4，第一主支撑件231与第二主支撑件232之间具有第一空隙d1，第一主支撑件231与第三主支撑件233之间具有第二空隙d2。这样，第一主支撑件231与第二主支撑件232之间，以及第一主支撑件231与第三主支撑件233之间预留有一定的空隙，避免第二主支撑件232和第三主支撑件233在展开位置与折叠位置之间转动时，第二主支撑件232与第一主支撑件231之间，以及第三主支撑件233与第一主支撑件231之间产生相互碰撞、摩擦甚至卡死。
上述实施例中的空隙部位不能对折叠屏10形成有效的支撑，当用户按压折叠屏10上与空隙相对的部分时，折叠屏10容易产生弯折变形，折叠屏设备产生损坏失效的风险较大。
为了避免上述问题，请参阅图6，图6为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，转轴装置23除了包括第一主支撑件231、第二主支撑件232和第三主支撑件233之外，还包括第一副支撑件234。
在一些实施例中，第一副支撑件234整体呈片状。在此基础上，可选的，当转轴装置23处于展开状态时，第一副支撑件234层叠设置于第一主支撑件231的第一支撑面m1以及第二主支撑件232的第二支撑面m2上，也即是，第一副支撑件234大致与第一支撑面m1、第二支撑面m2平行。这样一来，可以减小转轴装置23在Z轴方向上的厚度，有利于折叠屏设备100在展开状态或者折叠状态下的薄型化。
在上述实施例的基础上，可选的，第一副支撑件234的厚度可以大于或者等于0.02毫米(mm)，且小于或者等于0.10mm。具体的，第一副支撑件234的厚度可以为0.02mm、0.03mm、0.04mm、0.05mm、0.06mm、0.07mm、0.08mm、0.09mm或者0.1mm。这样，第一副支撑件234的厚度适中，在保证结构强度的同时，还能够兼顾转轴装置23在Z轴方向上的厚度，有利于折叠屏设备100在展开状态或者折叠状态下的薄型化。
在其他一些实施例中，第一副支撑件234也可以呈板状、块状、条状等等，在此不做具体限定。
在一些实施例中，第一副支撑件234可以具有弹性。这样，当第二主支撑件232相对于第一主支撑件231在展开位置与折叠位置之间转动时，第一副支撑件234可以随着折叠屏10一起被折弯，避免影响折叠屏10的弯折效果。
在一些实施例中，第一副支撑件234的材料包括但不限于钢、钛合金等金属，以及含有玻璃纤维、碳纤维、芳纶纤维等纤维材料的复合材料。其中，钢为含碳量质量百分比介于0.02％至2.11％之间的铁碳合金。这些材料的结构强度较优，在保证第一副支撑件234的支撑强度的同时，有利于减小第一副支撑件234的厚度，以利于折叠屏设备100的薄型化。同时，这些材料为弹塑性材料，当第一副支撑件234呈片状时，第一副支撑件234具有弹性，第一副支撑件234能够随着折叠屏10一起被折弯。
请继续参阅图6，第一副支撑件234包括固定连接的第一连接部2341和第一悬臂部2342。第一连接部2341位于第二主支撑件232的前侧，也即是，第一连接部2341位于第二主支撑件232的第二支撑面m2所朝向的一侧，且第一连接部2341在第二支撑面m2上的正投影位于第二支撑面m2内。
在上述基础上，一些实施例中，第一连接部2341连接于第二主支撑件232上。可选的，请参阅图6，第一连接部2341可以借助胶粘剂C固定连接于第二主支撑件232上，在其他一些实施例中，第一连接部2341也可以借助螺钉、卡扣等结构固定连接于第二主支撑件232上，或者，借助转轴、柔性结构等可转动连接于第二主支撑件232上，在此不做具体限定。
第一连接部2341可以直接连接于第二主支撑件232上，也可以连接于与第二主支撑件232相对固定的其他结构上，在此不做具体限定。
第一悬臂部2342呈悬臂状。第一悬臂部2342包括第一悬臂段2342a。第一悬臂段2342a是指：当转轴装置23处于展开状态时，第一悬臂部2342上位于第一支撑面m1所朝向的一侧，且在第一支撑面m1上的正投影位于第一支撑面m1内的部分。
这样一来，第一副支撑件234横跨在第一空隙d1上，第一副支撑件234至少一部 分覆盖在第一空隙d1上。具体的，第一悬臂部2342还可以包括第二悬臂段2342b。第二悬臂段2342b位于第一连接部2341与第一悬臂段2342a之间。第二悬臂段2342b是指：当转轴装置23处于展开状态时，第一悬臂部2342上位于第一空隙d1朝向折叠屏10的一侧，且沿Z轴方向在第一空隙d1内的投影位于第一空隙d1内的部分。这样一来，第二悬臂段2342b覆盖在第一空隙d1上。在将转轴装置23应用于折叠屏设备100时，折叠屏10位于第一副支撑件234远离第一主支撑件231和第二主支撑件232的一侧，转轴装置23借助第一副支撑件234的第二悬臂段2342b对折叠屏10上与第一空隙d1相对的部分进行支撑，可以提高转轴装置23的支撑性能。
但是，上述实施例所述转轴装置23中，当第二主支撑件232相对于第一主支撑件231在展开位置与折叠位置之间转动时，第一悬臂段2342a的整体或者部分(也即是第一悬臂段2342a的至少部分)与第一主支撑件231接触并相对于第一主支撑件231滑动。举例说明，请参阅图7，图7为图6所示转轴装置23中第二主支撑件232相对于第一主支撑件231沿方向a1由展开位置向折叠位置转动时的结构示意图，第一悬臂段2342a的整体与第一主支撑件231接触并相对于第一主支撑件231沿方向a2向左滑动。这样一来，第一悬臂段2342a的整体与第一主支撑件231之间产生了剐蹭，并产生噪声，导致折叠屏设备的用户体验较低。
为了降低折叠屏设备的噪声，在一些实施例中，请参阅图8，图8为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，转轴装置23除了包括第一主支撑件231、第二主支撑件232、第三主支撑件233和第一副支撑件234之外，还包括润滑结构236。
润滑结构236至少设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间。
润滑结构236可以为表面爽滑结构，也即是，润滑结构236可以为表面摩擦系数小于0.25的一类结构。具体的，润滑结构236为表面摩擦系数可以为0.24、0.23、0.2、0.1、0.05、0.02或者0.01等等。在此基础上，润滑结构236的材料包括但不限于含有氟元素的化合物，示例的，润滑结构236的材料为聚四氟乙烯。在其他一些实施例中，润滑结构236的材料也可以为聚甲醛(polyoxymethylene，POM)。这样，润滑结构236通过减小表面摩擦系数，来达到降低噪声的目的。
润滑结构236也可以为软质弹性结构。润滑结构236的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。这样，润滑结构236通过避免相互剐蹭的两个结构之间硬接触，来达到降低噪声的目的。
这样一来，第一悬臂段2342a的上述至少部分与第一主支撑件231之间借助润滑结构236进行润滑，防止第一悬臂段2342a的上述至少部分与第一主支撑件231之间因剐蹭而产生噪声，从而提升折叠屏设备的用户体验。
润滑结构236的结构形式有多种。一些实施例中，请继续参阅图8，润滑结构236包括第一润滑层2361。第一润滑层2361设置于第一悬臂段2342a的上述至少部分朝向第一主支撑件231的表面。假设第一悬臂段2342a的朝向第一主支撑件231的表面为第一表面，第一悬臂段2342a的上述至少部分朝向第一主支撑件231的表面为第一表面上的第一区域。具体的，第一润滑层2361可以设置于该第一区域的整个区域，也 可以设置于该第一区域的部分区域，本申请对此不做限定。而且，第一润滑层2361除了设置于第一表面的第一区域之外，还可以设置于第一表面的其他区域，图8给出了第一润滑层2361设置于第一表面的整个区域的示例，这不能认为是对本申请构成的特殊限制。此结构简单，润滑结构236的设置区域较小，成本较低。
在又一些实施例中，请参阅图9，图9为本申请又一些实施例提供转轴装置23的结构示意图。在本实施例中，第一悬臂段2342a的远离第一连接部2341的一端为第一端，该第一端形成第一悬臂部2342的远离第一连接部2341的一端(也称为悬臂端)。在此基础上，润滑结构236还包括第二润滑层2362。第二润滑层2362设置于第一端的端面。假设第一端的端面为第二表面，第二润滑层2362可以设置于该第二表面的部分区域，也可以设置于该第二表面的整个区域，图9给出了第二润滑层2362设置于第二表面的整个区域的示例。这样一来，第一悬臂段2342a与第一主支撑件231之间可以借助第二润滑层2362润滑，能够在一定程度上降低噪声。
在上述实施例中，请参阅图9，润滑结构236可以同时包括第一润滑层2361和第二润滑层2362，这样可以提升润滑效果，进一步降低噪声。在其他一些实施例中，润滑结构236也可以包括第二润滑层2362，而不包括第一润滑层2361，在此不做具体限定。
当润滑结构236同时包括第一润滑层2361和第二润滑层2362时，第二润滑层2362可以与第一润滑层2361相接，也可以与第一润滑层2361不接触，在此不做具体限定。
在一些实施例中，上述第一润滑层2361和第二润滑层2362可以与第一悬臂部2342的表面直接接触。具体的，第一润滑层2361和第二润滑层2362可以采用喷涂、淋涂、电化学沉积、电镀等工艺成型于第一悬臂部2342的表面，在此不做具体限定。
在其他一些实施例中，第一润滑层2361和第二润滑层2362均为薄膜结构，第一润滑层2361与第一悬臂部2342的表面之间，以及第二润滑层2362与第一悬臂部2342的表面之间设有胶粘剂，第一润滑层2361和第二润滑层2362借助该胶粘剂粘接于第一悬臂部2342的表面，在此不做具体限定。
在又一些实施例中，请参阅图10，图10为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，润滑结构236除了包括第二润滑层2362之外，还包括第三润滑层2363。第三润滑层2363设置于第一悬臂段2342a的背对第一主支撑件231的表面。假设第一悬臂段2342a的背对第一主支撑件231的表面为第三表面，具体的，第三润滑层2363可以设置于第三表面的整个区域，也可以设置于第三表面的部分区域，图10给出了第三润滑层2363设置于第三表面的整个区域的示例，这不能认为是对本申请构成的特殊限制。
这样一来，在采用喷涂、淋涂、电化学沉积、电镀等工艺成型第二润滑层2362的过程中，也一并成型第三润滑层2363，因此无需遮盖第三表面，加工过程简单，操作方便。当采用胶粘方式在第一悬臂部2342的表面设置第二润滑层2362时，可以采用胶粘方式将第三润滑层2363固定于第三表面，同时可以将第二润滑层2362与第三润滑层2363设计成一个薄膜整体，以增大润滑结构236与第一副支撑件234之间的粘接面积，提高粘接强度，延长使用寿命。
上述第一空隙d1内可能存在摆臂、转轴等结构件，这样，当第二主支撑件232 相对于第一主支撑件231在展开位置与折叠位置之间转动时，第二悬臂段2342b也相对于第一空隙d1内的摆臂、转轴等结构件滑动，也会产生噪声。
为了解决上述问题，在一些实施例中，请参阅图8、图9或图10，润滑结构236还可以设置于第二悬臂段2342b与第一空隙d1之间。示例的，请参阅图8、图9或图10，第一润滑层2361具有延伸部2361a，该延伸部2361a位于第二悬臂段2342b的朝向第一空隙d1的表面，该延伸部2361a形成第二悬臂段2342b与第一空隙d1之间的部分润滑结构236。当然，第二悬臂段2342b与第一空隙d1之间的部分润滑结构236也可以呈其他结构形态，在此不做具体限定。
这样一来，第二悬臂段2342b与第一空隙d1内的摆臂、转轴等结构件之间还借助润滑结构236进行润滑，防止第二悬臂段2342b与第一空隙d1内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
需要说明的是，润滑结构236除了设置于第一悬臂段2342a与第一主支撑件231之间，以及第二悬臂段2342b与第一空隙d1之间之外，还可以设置于其他位置，比如设置于第一悬臂部2342上与第二主支撑件232相对的部分上(如图8、图9或图10所示)，或者设置于第一连接部2341上，在此不做具体限定。
在上述基础上，请返回参阅图6，为了提升转轴装置23在第二空隙d2处的支撑性能，一些实施例中，可以在第二空隙d2的前侧另外设置一个副支撑件。
具体的，请参阅图11，图11为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，转轴装置23除了包括第一主支撑件231、第二主支撑件232、第三主支撑件233和第一副支撑件234之外，还包括第二副支撑件235。
第二副支撑件235可以与第一副支撑件234的结构形式及材料相同，在此不做具体限定。
第二副支撑件235包括固定连接的第二连接部2351和第二悬臂部2352。第二连接部2351位于第三主支撑件233的前侧，也即是，第二连接部2351位于第三主支撑件233的第三支撑面m3所朝向的一侧，且第二连接部2351在第三支撑面m3上的正投影位于第三支撑面m3内。
在上述基础上，一些实施例中，第二连接部2351连接于第三主支撑件233上。具体的，第二连接部2351在第三主支撑件233上的连接方式可以与前述第一连接部2341在第二主支撑件232上的连接方式相同，在此不作赘述。
第二悬臂部2352呈悬臂状。第二悬臂部2352包括第三悬臂段2352a。第三悬臂段2352a是指：当转轴装置23处于展开状态时，第二悬臂部2352上位于第三支撑面m3所朝向的一侧，且在第三支撑面m3上的正投影位于第三支撑面m3内的部分。
这样一来，第二副支撑件235横跨在第二空隙d2上，第二副支撑件235至少一部分覆盖在第二空隙d2上。具体的，第二悬臂部2352还可以包括第四悬臂段2352b。第四悬臂段2352b位于第二连接部2351与第三悬臂段2352a之间。第四悬臂段2352b是指：当转轴装置23处于展开状态时，第二悬臂部2352上位于第二空隙d2朝向折叠屏10的一侧，且沿Z轴方向在第二空隙d2内的投影位于第二空隙d2内的部分。这样一来，第四悬臂段2352b覆盖在第二空隙d2上。在将转轴装置23应用于折叠屏设备100时，折叠屏10还位于第二副支撑件235远离第一主支撑件231和第三主支撑件233 的一侧，转轴装置23借助第二副支撑件235的第四悬臂段2352b对折叠屏10上与第二空隙d2相对的部分进行支撑，可以提高转轴装置23的支撑性能。
上述实施例所述转轴装置23中，当第三主支撑件233相对于第一主支撑件231在展开位置与折叠位置之间转动时，第三悬臂段2352a的部分或者整体(也即是第三悬臂段2352a的至少部分)也相对于第一主支撑件231滑动。举例说明，请参阅图12，图12为图11所示转轴装置23中第三主支撑件233相对于第一主支撑件231沿方向a1由展开位置向折叠位置转动时的结构示意图，第三悬臂段2352a的整体相对于第一主支撑件231沿方向a3向右滑动。这样一来，第三悬臂段2352a与第一主支撑件231之间也产生了剐蹭，并产生噪声，导致折叠屏设备的用户体验较低。
为了进一步降低噪声，提升折叠屏设备的用户体验，在一些实施例中，请继续参阅图11和图12，润滑结构236还设置于第三悬臂段2352a的上述至少部分与第一主支撑件231之间。
这样一来，第三悬臂段2352a的上述至少部分与第一主支撑件231之间也借助润滑结构236进行润滑，防止第三悬臂段2352a的上述至少部分与第一主支撑件231之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验，提升产品竞争力。
在上述实施例中，润滑结构236的部分可以设置于第三悬臂段2352a的表面。具体的，润滑结构236的该部分在第三悬臂段2352a表面的设置方式与前述润滑结构236在第一悬臂段2342a表面的设置方式相同，在此不作赘述。
上述第二空隙d2内也可能存在摆臂、转轴等结构件，这样，当第三主支撑件233相对于第一主支撑件231在展开位置与折叠位置之间转动时，第四悬臂段2352b也相对于第二空隙d2的摆臂、转轴等结构件滑动，也会产生噪声。
为了解决上述问题，在一些实施例中，请继续参阅图11和图12，润滑结构236还设置于第四悬臂段2352b与第二空隙d2之间。可选的，第四悬臂段2352b与第二空隙d2之间的部分润滑结构236可以设置于第四悬臂段2352b的朝向第二空隙d2的表面。
这样一来，第四悬臂段2352b与第二空隙d2内的摆臂、转轴等结构件之间还借助润滑结构236进行润滑，防止第四悬臂段2352b与第二空隙d2内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
需要说明的是，润滑结构236除了设置于第三悬臂段2352a与第一主支撑件231之间，以及第四悬臂段2352b与第二空隙d2之间之外，还可以设置于其他位置，比如设置于第二悬臂部2352上与第三主支撑件233相对的部分上，或者设置于第二连接部2351上，在此不做具体限定。
润滑结构236除了可以为上述结构之外，还可以有其他结构形式。
示例的，请参阅图13，图13为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，润滑结构236包括第一润滑膜236a和第二润滑膜236b。
第一润滑膜236a包括第一固定段236a1和第一自由段236a2。
其中，第一固定段236a1固定于第一副支撑件234朝向第一主支撑件231和第二主支撑件232的表面。具体的，第一固定段236a1可以固定于第一副支撑件234中第一连接部2341朝向第二主支撑件232的表面，和/或，固定于第一悬臂部2342的位于 第二主支撑件232前侧的部分朝向第二主支撑件232的表面，和/或,固定于第二悬臂段2342b朝向第一空隙d1的表面，和/或，固定于第一悬臂段2342a朝向第一主支撑件231的表面，在此不作具体限定。其中，第一悬臂部2342的位于第二主支撑件232前侧的部分是指：第一悬臂部2342上位于第二主支撑件232前侧，且在第二主支撑件232的第二支撑面m2的正投影位于第二支撑面m2内的部分。
第一自由段236a2位于第一固定段236a1靠近第三主支撑件233的一侧。
第二润滑膜236b包括第二固定段236b1和第二自由段236b2。
其中，第二固定段236b1固定于第二副支撑件235朝向第一主支撑件231和第三主支撑件233的表面。具体的，第二固定段236b1可以固定于第二副支撑件235中第二连接部2351朝向第三主支撑件233的表面，和/或，固定于第二悬臂部2352的位于第三主支撑件233前侧的部分朝向第三主支撑件233的表面，和/或,固定于第四悬臂段2352b朝向第二空隙d2的表面，和/或，固定于第三悬臂段2352a朝向第一主支撑件231的表面，在此不作具体限定。其中，第二悬臂部2352的位于第三主支撑件233前侧的部分是指：第二悬臂部2352上位于第三主支撑件233前侧，且在第三主支撑件233的第三支撑面m3的正投影位于第三支撑面m3内的部分。
第二自由段236b1位于第二固定段236b1靠近第二主支撑件232的一侧。
第二自由段236b1与第一自由段236a1层叠设置。
这样一来，第一润滑膜236a和第二润滑膜236b交错设置，能够起到润滑的作用，并降低噪声。同时，请参阅图14，图14为图13所示转轴装置23在由展开状态向折叠状态转动时的结构示意图，第二主支撑件232和第三主支撑件233相对于第一主支撑件231在展开位置与折叠位置之间转动时，第一润滑膜236a和第二润滑膜236b可以产生相对滑动，可以避免对第一副支撑件234和第二副支撑件235的相对远离或者靠近运动产生影响。
在上述实施例中，第一润滑膜236a和第二润滑膜236b可以为表面爽滑结构。
又示例的，请参阅图15，图15为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，润滑结构236包括第三润滑膜236c。第三润滑膜236c包括第一润滑膜区域236c1、第二润滑膜区域236c2和第三润滑膜区域236c3。
第一润滑膜区域236c1固定于第一副支撑件234朝向第一主支撑件231和第二主支撑件232的表面。具体的，第一润滑膜区域236c1可以固定于第一副支撑件234中第一连接部2341朝向第二主支撑件232的表面，和/或，固定于第一悬臂部2342的位于第二主支撑件232前侧的部分朝向第二主支撑件232的表面，和/或,固定于第二悬臂段2342b朝向第一空隙d1的表面，和/或，固定于第一悬臂段2342a朝向第一主支撑件231的表面，在此不作具体限定。
第二润滑膜区域236c2固定于第二副支撑件235朝向第一主支撑件231和第三主支撑件233的表面。具体的，第二润滑膜区域236c2可以固定于第二副支撑件235中第二连接部2351朝向第三主支撑件233的表面，和/或，固定于第二悬臂部2352的位于第三主支撑件233前侧的部分朝向第三主支撑件233的表面，和/或,固定于第四悬臂段2352b朝向第二空隙d2的表面，和/或，固定于第三悬臂段2352a朝向第一主支撑件231的表面，在此不作具体限定。
第三润滑膜区域236c3连接于第一润滑膜区域236c1与第二润滑膜区域236c2之间，且由第一润滑膜区域236c1指向第二润滑膜区域236c2的方向，第三润滑膜区域236c3可弹性伸缩。一些实施例中，第三润滑膜236c的至少第三润滑膜区域236c3的某一段或者整体为软质弹性结构，具体的，软质弹性结构的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。第一润滑膜区域236c1和第二润滑膜区域236c2可以为表面爽滑结构，也可以为软质弹性结构。一些实施例中，第一润滑膜区域236c1、第二润滑膜区域236c2和第三润滑膜区域236c3均为软质弹性结构且材料相同。这样，第一润滑膜区域236c1、第二润滑膜区域236c2和第三润滑膜区域236c3可以一体成型，降低第三润滑膜236c的结构复杂度。
这样一来，当第二主支撑件232和第三主支撑件233由展开位置向折叠位置转动时，请参阅图16，图16为图15所示转轴装置23在由展开状态向折叠状态转动时的结构示意图，第三润滑膜区域236c3处于拉伸状态并积蓄弹性力，当第二主支撑件232和第三主支撑件233由折叠位置向展开位置转动时，第三润滑膜区域236c3在积蓄的弹性力下收缩。由此，第二主支撑件232和第三主支撑件233相对于第一主支撑件231在展开位置与折叠位置之间转动时，第三润滑膜区域236c3产生弹性伸缩，可以避免对第一副支撑件234和第二副支撑件235的相对远离或者靠近运动产生影响。同时，本实施例所述转轴装置23借助第三润滑膜236c可以同时对第一副支撑件234和第二副支撑件235起到润滑的作用，并降低噪声，因此，转轴装置23的组成结构简单，容易实现。
还示例的，润滑结构236还可以包括第四润滑膜(图中未示出)和第五润滑膜(图中未示出)。第四润滑膜的一端固定于第一副支撑件234朝向第一主支撑件231和第二主支撑件232的表面，另一端固定于第一主支撑件231上。第四润滑膜由固定第一副支撑件234的一端至固定第一主支撑件231的一端可弹性伸缩。一些实施例中，第四润滑膜的某一段或者整体为软质弹性结构，具体的，软质弹性结构的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。第五润滑膜的一端固定于第二副支撑件235朝向第一主支撑件231和第三主支撑件233的表面，另一端固定于第一主支撑件231上。第五润滑膜由固定第二副支撑件235的一端至固定第一主支撑件231的一端可弹性伸缩。这样一来，当第二主支撑件232和第三主支撑件233由展开位置向折叠位置转动时，第四润滑膜和第五润滑膜弹性伸缩，可以避免对第一副支撑件234和第二副支撑件235的相对远离或者靠近运动产生影响。
请返回参阅图6，为了提升转轴装置23在第二空隙d2处的支撑性能，在又一些实施例中，也可以增大前述第一副支撑件234的面积，以使第一副支撑件234在覆盖第一空隙d1的同时，还能够覆盖到第二空隙d2。
具体的，请参阅图17，图17为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，第一悬臂部2342还包括第五悬臂段2342c。第五悬臂段2342c位于第一悬臂段2342a远离第一连接部2341的一侧。第五悬臂段2342c是指：当转轴装置23处于展开状态时，第一悬臂部2342上位于第三支撑面m3所朝向的一侧，且在第三支撑面m3上的正投影位于第三支撑面m3内的部分。
这样一来，第一副支撑件234除了横跨在第一空隙d1上，还横跨在第二空隙d2 上。具体的，请继续参阅图17，第一悬臂部2342还可以包括第六悬臂段2342d。第六悬臂段2342d位于第一悬臂段2342a与第五悬臂段2342c之间。第六悬臂段2342d是指：当转轴装置23处于展开状态时，第一悬臂部2342上位于第二空隙d2朝向折叠屏10的一侧，且沿Z轴方向在第二空隙d2内的投影位于第二空隙d2内的部分。这样一来，第六悬臂段2342d覆盖在第二空隙d2上。在将转轴装置23应用于折叠屏设备100时，折叠屏10位于第一副支撑件234远离第一主支撑件231、第二主支撑件232和第三主支撑件233的一侧，转轴装置23除了借助第一副支撑件234的第二悬臂段2342b，提高对折叠屏10上与第一空隙d1相对的部分的支撑强度之外，还借助第一副支撑件234的第六悬臂段2342d，提高对折叠屏10上与第二空隙d2相对的部分的支撑强度。
但是，上述实施例所述转轴装置23中，当第二主支撑件232和第三主支撑件233相对于第一主支撑件231在展开位置与折叠位置之间转动时，第一悬臂段2342a的上述至少部分相对于第一主支撑件231滑动，同时第五悬臂段2342c的至少部分也相对于第三主支撑件233滑动。举例说明，请参阅图18，图18为图17所示转轴装置23中第二主支撑件232和第三主支撑件233相对于第一主支撑件231沿方向a1由展开位置向折叠位置转动时的结构示意图，第一悬臂段2342a的部分相对于第一主支撑件231沿方向a2向左滑动，第五悬臂段2342c的整体沿方向a4向左下方滑动。这样一来，第一悬臂段2342a的部分与第一主支撑件231之间，以及第五悬臂段2342c的整体与第三主支撑件233之间产生了剐蹭，并产生噪声，导致折叠屏设备的用户体验较低。
为了进一步降低折叠屏设备的噪声，在一些实施例中，请参阅图19，图19为本申请又一些实施例提供的转轴装置23的结构示意图，润滑结构236除了设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间之外，还设置于第五悬臂段2342c的上述至少部分与第三主支撑件233之间。
这样一来，第五悬臂段2342c的上述至少部分与第三主支撑件233之间也借助润滑结构236润滑，防止第五悬臂段2342c的至少部分与第三主支撑件233之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
需要说明的是，润滑结构236可以在设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间的基础上，同时还设置于第五悬臂段2342c的上述至少部分与第三主支撑件233之间；或者，设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间，不设置于第五悬臂段2342c的上述至少部分与第三主支撑件233之间；或者，设置于第五悬臂段2342c的上述至少部分与第三主支撑件233之间，不设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间。在此不做具体限定。
在上述实施例的基础上，一些实施例中，润滑结构236还设置于第六悬臂段2342d与第二空隙d2之间。具体的，润滑结构236的部分可以设置于第六悬臂段2342d的朝向第二空隙d2的表面。
这样一来，第六悬臂段2342d与第二空隙d2内的摆臂、转轴等结构件之间还借助润滑结构236进行润滑，防止第六悬臂段2342d与第二空隙d2内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
需要说明的是，润滑结构236除了设置于第一悬臂段2342a的上述至少部分与第一主支撑件231之间，第二悬臂段2342b与第一空隙d1之间，第五悬臂段2342c的上 述至少部分与第三主支撑件233之间，以及第六悬臂段2342d与第二空隙d2之间之外，还可以设置于其他位置，比如设置于第五悬臂段2342c远离第一悬臂段2342a的一端端面(如图20所示)，或者设置于第五悬臂段2342c背对第三主支撑件233的表面(如图21所示)，在此不做具体限定。
在上述任一实施例的基础上，请参阅图22，图22为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，润滑结构236可以包括第四润滑层2364。第四润滑层2364设置于第一主支撑件231的支撑面(也即是前述第一支撑面m1)上。这样一来，第一副支撑件234的第一悬臂段2342a与第一主支撑件231之间，以及第二副支撑件235的第三悬臂段2352a与第一主支撑件231之间可以借助第四润滑层2364润滑，防止第一悬臂段2342a与第一主支撑件231之间以及第三悬臂段2352a与第一主支撑件231之间因剐蹭而产生噪声，从而提升折叠屏设备的用户体验。而且借助第四润滑层2364，即可同时实现第一副支撑件234与第一主支撑件231之间，以及第二副支撑件235与第一主支撑件231之间的润滑，因此有利于降低转轴装置23的结构复杂度。
根据以上各实施例的描述，第一副支撑件234中，第一连接部2341位于第二主支撑件232的前侧并连接于第二主支撑件232上，第一悬臂部2342的第一悬臂段2342a位于第一主支撑件231的前侧。在其他一些实施例中，第一连接部2341与第一悬臂段2342a的位置可以互换。
具体的，请参阅图23，图23为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，第一连接部2341位于第一支撑面m1所朝向的一侧并连接于第一主支撑件231上，第一悬臂部2342的第一悬臂段2342a是指：当转轴装置23处于展开状态时，第一悬臂部2342上位于第二支撑面m2所朝向的一侧，且在第二支撑面m2上的正投影位于第二支撑面m2内的部分。
这样一来，第一副支撑件234同样横跨在第一空隙d1上，第一副支撑件234至少一部分覆盖在第一空隙d1上。具体的，第一悬臂部2342的第二悬臂段2342b位于第一空隙d1朝向折叠屏10的一侧，且当转轴装置23处于展开状态时，第二悬臂段2342b沿Z轴方向在第一空隙d1内的投影位于第一空隙d1内。这样一来，转轴装置23同样借助第二悬臂段2342b对折叠屏10上与第一空隙d1相对的部分进行支撑，可以提高转轴装置23的支撑性能。
在上述基础上，第一悬臂段2342a的整体或者部分(也即是至少部分)与第二主支撑件232接触，并相对于第二主支撑件232滑动，同时第二悬臂段2342b与第一空隙d1内的摆臂、转轴等结构件之间接触并产生相对滑动，在滑动过程中因剐蹭而产生噪声。
为了降低折叠屏设备的噪声，在一些实施例中，请参阅图24，图24为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，转轴装置23还包括润滑结构236。润滑结构236至少设置于第一悬臂段2342a的上述至少部分与第二主支撑件232之间。
润滑结构236可以为表面爽滑结构，也即是，润滑结构236可以为表面摩擦系数小于0.25的一类结构。具体的，润滑结构236为表面摩擦系数可以为0.24、0.23、 0.2、0.1、0.05、0.02或者0.01等等。在此基础上，润滑结构236的材料包括但不限于含有氟元素的化合物，示例的，润滑结构236的材料为聚四氟乙烯。在其他一些实施例中，润滑结构236的材料也可以为聚甲醛(polyoxymethylene，POM)。这样，润滑结构236通过减小表面摩擦系数，来达到降低噪声的目的。
润滑结构236也可以为软质弹性结构。润滑结构236的材料包括但不限于含有聚氨酯、橡胶、乳胶等具有弹性的材料。这样，润滑结构236通过避免相互剐蹭的两个结构之间硬接触，来达到降低噪声的目的。
这样一来，第一悬臂段2342a的上述至少部分与第二主支撑件232之间借助润滑结构236进行润滑，防止第一悬臂段2342a的上述至少部分与第二主支撑件232之间因剐蹭而产生噪声，从而提升折叠屏设备的用户体验。
需要说明的是，在上述实施例的基础上，润滑结构236在第一悬臂段2342a的上述至少部分与第二主支撑件232之间的设置方式，可以与前面实施例中，润滑结构236在第一悬臂段2342a的至少部分与第一主支撑件231之间的设置方式类似，在此不做赘述。
在一些实施例中，为了避免第二悬臂段2342b与第一空隙d1内的摆臂、转轴等结构件因相对滑动而产生噪声，在一些实施例中，请参阅图24，润滑结构236还可以设置于第二悬臂段2342b与第一空隙d1之间。这样一来，第二悬臂段2342b与第一空隙d1内的摆臂、转轴等结构件之间还借助润滑结构236进行润滑，防止第二悬臂段2342b与第一空隙d1内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在上述实施例的基础上，在一些实施例中，请参阅图25，图25为本申请又一些实施例提供的转轴装置23的结构示意图。在本实施例中，转轴装置23还包括第二副支撑件235。第二副支撑件235包括固定连接的第二连接部2351和第二悬臂部2352。第二连接部2351位于第一支撑面m1所朝向的一侧并连接于第一主支撑件231上，第二悬臂部2352包括第三悬臂段2352a，第二悬臂部2352的第三悬臂段2352a是指：当转轴装置23处于展开状态时，第二悬臂部2352上位于第三支撑面m3所朝向的一侧，且在第三支撑面m3上的正投影位于第三支撑面m3内的部分。
这样一来，第二副支撑件235同样横跨在第二空隙d2上，第二副支撑件235至少一部分覆盖在第二空隙d2上。具体的，第二悬臂部2352还可以包括第四悬臂段2352b。第四悬臂段2352b位于第二空隙d2朝向折叠屏10的一侧，且当转轴装置23处于展开状态时，第四悬臂段2352b沿Z轴方向在第二空隙d2内的投影位于第二空隙d2内。这样一来，转轴装置23借助第四悬臂段2352b对折叠屏10上与第二空隙d2相对的部分进行支撑，可以提高转轴装置23的支撑性能。
在上述基础上，第三悬臂段2352a的整体或者部分(也即是至少部分)与第三主支撑件233接触，并相对于第三主支撑件233滑动，同时第四悬臂段2352b与第二空隙d2内的摆臂、转轴等结构件之间接触并产生相对滑动，在滑动过程中因剐蹭而产生噪声。
为了进一步降低折叠屏设备的噪声，在一些实施例中，请继续参阅图25，润滑结构236还设置于第三悬臂段2352a的上述至少部分与第三主支撑件233之间。
这样一来，第三悬臂段2352a的上述至少部分与第三主支撑件233之间借助润滑结构236进行润滑，防止第三悬臂段2352a的上述至少部分与第三主支撑件233之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
需要说明的是，在上述实施例的基础上，润滑结构236在第三悬臂段2352a的上述至少部分与第三主支撑件233之间的设置方式，可以与前面实施例中，润滑结构236在第一悬臂段2342a的至少部分与第一主支撑件231之间的设置方式类似，在此不做赘述。
在一些实施例中，为了避免第四悬臂段2352b与第二空隙d2内的摆臂、转轴等结构件因相对滑动而产生噪声，在一些实施例中，请继续参阅图25，润滑结构236还可以设置于第四悬臂段2352b与第二空隙d2之间。这样一来，第四悬臂段2352b与第二空隙d2内的摆臂、转轴等结构件之间还借助润滑结构236进行润滑，防止第四悬臂段2352b与第二空隙d2内的结构件之间因剐蹭而产生噪声，从而进一步提升折叠屏设备的用户体验。
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (20)

  1. 一种转轴装置，其特征在于，包括：
    第一主支撑件，具有第一支撑面，所述第一支撑面用于支撑部分折叠屏；
    第二主支撑件，具有第二支撑面，所述第二支撑面用于支撑部分折叠屏，且所述第二支撑件能够相对于所述第一主支撑件在展开位置与折叠位置之间转动；
    第一副支撑件，包括固定连接的第一连接部和第一悬臂部，所述第一连接部位于所述第二支撑面所朝向的一侧并连接于所述第二主支撑件上，所述第一悬臂部包括第一悬臂段，所述第一悬臂段位于所述第一支撑面所朝向的一侧，当所述第二主支撑件相对于所述第一主支撑件在所述展开位置与所述折叠位置之间转动时，所述第一悬臂段的至少部分相对于所述第一主支撑件滑动；
    润滑结构，至少设置于所述第一悬臂段的所述至少部分与所述第一主支撑件之间。
  2. 根据权利要求1所述的转轴装置，其特征在于，所述润滑结构包括第一润滑层；
    所述第一润滑层设置于所述第一悬臂段的所述至少部分朝向所述第一主支撑件的表面。
  3. 根据权利要求1或2所述的转轴装置，其特征在于，所述第一悬臂段的远离所述第一连接部的一端为第一端，所述第一端形成所述第一悬臂部的远离所述第一连接部的一端；
    所述润滑结构还包括第二润滑层；
    所述第二润滑层设置于所述第一端的端面。
  4. 根据权利要求3所述的转轴装置，其特征在于，所述润滑结构还包括第三润滑层；
    所述第三润滑层设置于所述第一悬臂段的背对所述第一主支撑件的表面。
  5. 根据权利要求1-4任一项所述的转轴装置，其特征在于，所述第一主支撑件与所述第二主支撑件之间具有第一空隙；
    所述第一悬臂部还包括第二悬臂段，所述第二悬臂段位于所述第一空隙朝向所述折叠屏的一侧；
    所述润滑结构还设置于所述第二悬臂段与所述第一空隙之间。
  6. 根据权利要求1-5任一项所述的转轴装置，其特征在于，还包括：
    第三主支撑件，位于所述第一主支撑件的远离所述第二主支撑件的一侧，所述第三主支撑件具有第三支撑面，所述第三支撑面用于支撑部分折叠屏，所述第三主支撑件也能够相对于所述第一主支撑件在展开位置与折叠位置之间转动；
    第二副支撑件，包括固定连接的第二连接部和第二悬臂部，所述第二连接部位于所述第三支撑面所朝向的一侧并连接于所述第三主支撑件上，所述第二悬臂部包括第三悬臂段，所述第三悬臂段位于所述第一支撑面所朝向的一侧，当所述第三主支撑件相对于所述第一主支撑件在所述展开位置与所述折叠位置之间转动时，所述第三悬臂段的至少部分相对于所述第一主支撑件滑动；
    所述润滑结构还至少设置于所述第三悬臂段的所述至少部分与所述第一主支撑件之间。
  7. 根据权利要求6所述的转轴装置，其特征在于，所述第一主支撑件与所述第三 主支撑件之间具有第二空隙；
    所述第二悬臂部还包括第四悬臂段，所述第四悬臂段位于所述第二空隙朝向所述折叠屏的一侧；
    所述润滑结构还设置于所述第四悬臂段与所述第二空隙之间。
  8. 根据权利要求6或7所述的转轴装置，其特征在于，所述润滑结构包括第一润滑膜和第二润滑膜；
    所述第一润滑膜包括第一固定段和第一自由段，所述第一固定段固定于所述第一副支撑件朝向所述第一主支撑件和所述第二主支撑件的表面，所述第一自由段位于所述第一固定段靠近所述第三主支撑件的一侧；
    所述第二润滑膜包括第二固定段和第二自由段，所述第二固定段固定于所述第二副支撑件朝向所述第一主支撑件和所述第三主支撑件的表面，所述第二自由段位于所述第二固定段靠近所述第二主支撑件的一侧；
    所述第二自由段与所述第一自由段层叠设置。
  9. 根据权利要求6-8任一项所述的转轴装置，其特征在于，所述润滑结构包括第三润滑膜；
    所述第三润滑膜包括第一润滑膜区域、第二润滑膜区域和第三润滑膜区域；
    所述第一润滑膜区域固定于所述第一副支撑件朝向所述第一主支撑件和所述第二主支撑件的表面，所述第二润滑膜区域固定于所述第二副支撑件朝向所述第一主支撑件和所述第三主支撑件的表面，所述第三润滑膜区域连接于所述第一润滑膜区域与所述第二润滑膜区域之间；
    由所述第一润滑膜区域指向所述第二润滑膜区域的方向，所述第三润滑膜区域可弹性伸缩。
  10. 根据权利要求1-5任一项所述的转轴装置，其特征在于，还包括：
    第三主支撑件，位于所述第一主支撑件的远离所述第二主支撑件的一侧，所述第三主支撑件具有第三支撑面，所述第三支撑面用于支撑部分折叠屏，所述第三主支撑件也能够相对于所述第一主支撑件在展开位置与折叠位置之间转动；
    所述第一悬臂部还包括第五悬臂段，所述第五悬臂段位于所述第一悬臂段远离所述第一连接部的一侧，所述第五悬臂段位于所述第三支撑面所朝向的一侧；
    所述润滑结构还设置于所述第五悬臂段与所述第三主支撑件之间。
  11. 根据权利要求1-10任一项所述的转轴装置，其特征在于，所述润滑结构包括第四润滑层；
    所述第四润滑层设置于所述第一支撑面上。
  12. 根据权利要求1-11任一项所述的转轴装置，其特征在于，所述第一副支撑件呈片状，当所述第二主支撑件相对于所述第一主支撑件处于展开状态时，所述第一副支撑件与所述第一支撑面和所述第二支撑面层叠设置；
    所述第一副支撑件的厚度大于或者等于0.02mm，且小于或者等于0.1 mm。
  13. 根据权利要求1-12任一项所述的转轴装置，其特征在于，所述润滑结构的材料为含氟元素的化合物。
  14. 根据权利要求1-13任一项所述的转轴装置，其特征在于，所述润滑结构的材 料为聚四氟乙烯或者聚甲醛。
  15. 一种转轴装置，其特征在于，包括：
    第一主支撑件，具有第一支撑面，所述第一支撑面用于支撑部分折叠屏；
    第二主支撑件，具有第二支撑面，所述第二支撑面用于支撑部分折叠屏，且所述第二支撑件能够相对于所述第一主支撑件在展开位置与折叠位置之间转动；
    第一副支撑件，包括固定连接的第一连接部和第一悬臂部，所述第一连接部位于所述第一支撑面所朝向的一侧并连接于所述第一主支撑件上，所述第一悬臂部包括第一悬臂段，所述第一悬臂段位于所述第二支撑面所朝向的一侧，当所述第二主支撑件相对于所述第一主支撑件在所述展开位置与所述折叠位置之间转动时，所述第一悬臂段的至少部分相对于所述第二主支撑件滑动；
    润滑结构，至少设置于所述第一悬臂段的所述至少部分与所述第二主支撑件之间。
  16. 根据权利要求15所述的转轴装置，其特征在于，所述第一主支撑件与所述第二主支撑件之间具有第一空隙；
    所述第一悬臂部还包括第二悬臂段，所述第二悬臂段位于所述第一空隙朝向所述折叠屏的一侧；所述润滑结构还设置于所述第二悬臂段与所述第一空隙之间。
  17. 根据权利要求15或16所述的转轴装置，其特征在于，还包括：
    第三主支撑件，位于所述第一主支撑件的远离所述第二主支撑件的一侧，所述第三主支撑件具有第三支撑面，所述第三支撑面用于支撑部分折叠屏，所述第三主支撑件也能够相对于所述第一主支撑件在展开位置与折叠位置之间转动；
    第二副支撑件，包括固定连接的第二连接部和第二悬臂部，所述第二连接部位于所述第一支撑面所朝向的一侧并连接于所述第一主支撑件上，所述第二悬臂部包括第三悬臂段，所述第三悬臂段位于所述第三支撑面所朝向的一侧，当所述第三主支撑件相对于所述第一主支撑件在所述展开位置与所述折叠位置之间转动时，所述第三悬臂段的至少部分相对于所述第三主支撑件滑动；
    所述润滑结构还至少设置于所述第三悬臂段的所述至少部分与所述第三主支撑件之间。
  18. 根据权利要求17所述的转轴装置，其特征在于，所述第一主支撑件与所述第三主支撑件之间具有第二空隙；
    所述第二悬臂部还包括第四悬臂段，所述第四悬臂段位于所述第二空隙朝向所述折叠屏的一侧；
    所述润滑结构还设置于所述第四悬臂段与所述第二空隙之间。
  19. 一种支撑***，其特征在于，包括第一壳体、第二壳体和权利要求1-18任一项所述的转轴装置；
    所述转轴装置连接于所述第一壳体与所述第二壳体之间。
  20. 一种折叠屏设备，其特征在于，包括折叠屏和权利要求19所述的支撑***；
    所述折叠屏包括第一显示区域、第二显示区域和第三显示区域，所述第三显示区域连接于所述第一显示区域与所述第二显示区域之间；所述第一显示区域设置于所述第一壳体上，所述第二显示区域设置于所述第二壳体上；所述第三显示区域设置于所述转轴装置上。
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