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WO2022247310A1 - 一种转动机构、支撑装置和电子设备 - Google Patents

一种转动机构、支撑装置和电子设备 Download PDF

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Publication number
WO2022247310A1
WO2022247310A1 PCT/CN2022/071900 CN2022071900W WO2022247310A1 WO 2022247310 A1 WO2022247310 A1 WO 2022247310A1 CN 2022071900 W CN2022071900 W CN 2022071900W WO 2022247310 A1 WO2022247310 A1 WO 2022247310A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating shaft
arm
lifting plate
helical
torsion arm
Prior art date
Application number
PCT/CN2022/071900
Other languages
English (en)
French (fr)
Inventor
孙健
张垚磊
李海飞
汪源
周国统
袁雷波
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 EP22731459.8A priority Critical patent/EP4117257B1/en
Publication of WO2022247310A1 publication Critical patent/WO2022247310A1/zh

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Classifications

    • 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
    • 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
    • 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
    • H04M1/022—The hinge comprising two parallel pivoting axes
    • 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

Definitions

  • the present application relates to the technical field of electronic equipment, in particular to a rotating mechanism, a supporting device and electronic equipment.
  • folding screen technology electronic devices with folding screens have become a hot technology.
  • the existing folding methods are divided into inner folding and outer folding, that is, the screen is folded inside or outside.
  • the problem with the outward fold is that the screen is exposed and easily scratched by hard objects.
  • This "drop-shaped" folding screen part has a larger inner folding angle, which has higher reliability and service life.
  • the structure of the lifting mechanism for driving the lifting plate to sink is complicated, and when the folding screen is in the unfolded state, the size along the thickness direction of the electronic equipment is relatively large, which is not conducive to reducing the electronic equipment when unfolded. The thickness of the state, which is not conducive to the thin design of electronic equipment.
  • Embodiments of the present application provide a rotating mechanism, a supporting device and an electronic device, which can reduce the size of the lifting mechanism along the thickness direction of the electronic device when the electronic device is in an unfolded state, making the electronic device lighter and thinner in the unfolded state.
  • some embodiments of the present application provide a rotating mechanism, which includes a base, a first connecting piece, a second connecting piece, a lifting plate, a first torsion spring, and a second torsion spring.
  • the first connecting piece is rotatably connected to the base by means of the first rotating shaft, and the first connecting piece is used for connecting the first housing.
  • the second connecting piece is rotatably connected to the base by means of the second rotating shaft, and the second connecting piece is used for connecting the second housing.
  • the second rotation axis is parallel to the first rotation axis.
  • the lifting plate is located between the first connecting piece and the second connecting piece.
  • the lifting plate has a fitting surface, and the fitting surface is used to fit a part of the folding screen.
  • the first torsion spring includes a first helical body and a first torsion arm.
  • the first screw body is sleeved on the first rotating shaft, the first torsion arm is located on the side of the lifting plate away from the fitting surface, and one end of the first torsion arm is fixed to one end of the first helix body, and the other end of the first torsion arm is It is slidably connected to the lifting plate along the first direction.
  • the second torsion spring includes a second helical body and a second torsion arm, the second helical body is sheathed on the second rotating shaft, the second torsion arm is located on the side of the lifting plate away from the fitting surface, and one end of the second torsion arm is connected to the One end of the second screw body is fixed, and the other end of the second torsion arm is slidably connected to the lifting plate along the first direction.
  • the first direction is parallel to the lifting plate and perpendicular to the first rotating shaft.
  • the first connecting part and the second connecting part can rotate between the unfolded position and the folded position relative to the base, and when the first connecting part and the second connecting part rotate from the unfolded position to the folded position, they can drive the first torsion arm and the second torsion arm.
  • the two torsion arms swing away from the bonding surface of the lifting plate to drive the lifting plate to sink.
  • the first connecting piece and the second connecting piece rotate from the folded position to the unfolded position, they can drive the first torsion arm and the second torsion arm to approach The bonding surface of the lifting plate swings to drive the lifting plate to rise.
  • the first torsion spring and the second torsion spring are respectively installed in the surrounding spaces of the first and second rotation shafts, and the first torsion spring and the second torsion spring drive the lifting plate to sink and The rising movement can reduce the occupied height of the lifting structure in the thickness direction of the electronic device in the unfolded state, thereby making the electronic device lighter and thinner in the unfolded state.
  • the first connecting member is fixed on the first rotating shaft
  • the base is provided with a first rotating hole
  • the first rotating shaft is passed through the first rotating hole, and can be Rotate in the rotating hole.
  • the second connecting piece is fixed on the second rotating shaft
  • the base is provided with a second rotating hole
  • the second rotating shaft is passed through the second rotating hole and can rotate in the second rotating hole.
  • the first gear is fixed on the first rotating shaft, and the central axis of the first gear is collinear with the central axis of the first rotating shaft.
  • a second gear is fixed on the second rotating shaft, and the central axis of the second gear is collinear with the central axis of the second rotating shaft.
  • the diameters of the first gear and the second gear are equal, and the first gear and the second gear are meshed for transmission, or an even number of intermediate gears is arranged between the first gear and the second gear, the first gear, the even number of intermediate gears, the The second gear meshes and drives sequentially.
  • the first connecting member and the second connecting member can be driven to rotate synchronously in opposite directions through the first gear and the second gear, or through the first gear, an even number of intermediate gears and the second gear.
  • the number of intermediate gears is two. In this way, the height and structural complexity of the rotating mechanism can be taken into account at the same time.
  • the first screw body is sheathed on the first rotating shaft, the first rotating shaft can rotate in the first screw body, and the other end of the first screw body is fixed on the base.
  • the second screw body is sheathed on the second rotating shaft, the second rotating shaft can rotate in the second screw body, and the other end of the second screw body is fixed on the base.
  • the rotation mechanism also includes a first support arm and a second support arm.
  • Both the first support arm and the second support arm are located on the side of the lifting plate away from the bonding surface, one end of the first support arm is fixed on the first rotating shaft, and the other end of the first supporting arm extends toward the direction close to the second rotating shaft, One end of the second support arm is fixed on the second rotating shaft, and the other end of the second supporting arm extends toward the direction close to the first rotating shaft.
  • the lifting plate can be lifted by the first support arm and the second support arm to drive the first torsion arm and the second torsion arm to swing close to the bonding surface .
  • the swing deformation angle of the first torsion arm and the second torsion arm toward the fitting surface is greater than 0 °, and less than or equal to 85°. In some embodiments, the swing deformation angle is 45°. In this way, when the first connecting part and the second connecting part are rotated from the unfolded position to the folded position, the lifting plate sinks to the lowest position, after that, the lifting plate will not Continue to sink. In this way, it is convenient to control the sinking height of the lifting plate.
  • a shaft sleeve is provided on the base, the shaft sleeve is rotatably sleeved on the first rotating shaft, and the first spiral body is sleeved on the shaft sleeve.
  • the first screw body is indirectly sheathed on the first rotating shaft through the sleeve, and the contact surface between the sleeve and the first rotating shaft is relatively large, which can avoid jamming due to stress concentration during relative rotation.
  • a limiting groove is provided on the base, and the limiting groove extends in a direction parallel to the first rotating shaft, and the third torsion arm is fitly embedded in the limiting groove.
  • a first flat position is provided on the first rotating shaft, a flat position hole is provided at one end of the first support arm, and the first support arm is sleeved on the first support arm through the flat position hole. on the reel.
  • the connection stability between the first support arm and the first rotating shaft is better, and the installation is convenient, which can reduce the assembly difficulty of the rotating mechanism and improve the assembly efficiency of the rotating mechanism.
  • the first torsion arm is provided with a hooking portion, and the surface of the lifting plate away from the fitting surface is provided with a hook, the hook has a guide section extending along the first direction, and the first torsion The arm is hooked on the hook through the hooking part and can slide along the guide section.
  • the first helical body includes a first helical part and a second helical part, the first helical part and the second helical part are sleeved on the first rotating shaft, the first helical part,
  • the second helical parts are arranged at intervals along the length direction of the first rotating shaft.
  • the end of the first helical portion close to the second helical portion is the first end of the first helical portion.
  • the end of the second helical portion close to the first helical portion is the first end of the second helical portion.
  • the end of the second helical portion away from the first helical portion is the second end of the second helical portion.
  • the first torsion arm is n-shaped, the two ends of the first torsion arm are respectively fixed between the first end of the first helical part and the first end of the second helical part, and the middle bending part of the first torsion arm forms the Hitch.
  • the end of the first helical portion away from the second helical portion is the second end of the first helical portion.
  • the end of the second helical portion away from the first helical portion is the second end of the second helical portion.
  • the first helical body is fixed on the base through the second end of the first helical part and the second end of the second helical part.
  • the first torsion spring has a symmetrical design, and the first torsion spring can be fixed on the base through the second end of the first helical part and the second end of the second helical part, which can ensure a stable connection between the first torsion spring and the base sex.
  • the first screw body is fixedly sleeved on the first rotating shaft
  • the first torsion arm is located on the side of the first rotating shaft close to the second rotating shaft
  • the second screw body is fixedly sleeved on the On the second rotating shaft
  • the second torsion arm is located on a side of the second rotating shaft close to the first rotating shaft.
  • first connecting piece and the second connecting piece When the first connecting piece and the second connecting piece rotate from the unfolded position to the folded position, they can drive the first torsion arm and the second torsion arm to swing away from the abutment surface of the lift plate, and the first and second connecting pieces are moved by When the folded position is rotated to the unfolded position, the first torsion arm and the second torsion arm can be driven to swing close to the bonding surface of the lifting plate.
  • the structure is simple in composition, and the cost of the rotating mechanism is relatively low.
  • the first rotating shaft is provided with a second flat position
  • the inner hole of the first screw body is a flat position hole
  • the first screw body is sleeved on the first rotating shaft through the inner hole superior.
  • some embodiments of the present application provide a supporting device, the supporting device includes a first housing, a second housing and the rotating mechanism described in any of the above technical solutions, the rotating mechanism is located between the first housing and the second housing. Between the two housings, the first connecting part of the rotating mechanism is connected to the first housing, and the second connecting part of the rotating mechanism is connected to the second housing.
  • the supporting device provided in the embodiment of the present application includes the rotating mechanism described in any one of the above technical solutions, both can solve the same technical problem and achieve the same effect.
  • some embodiments of the present application provide an electronic device, where the electronic device includes a folding screen and the supporting device described in the above technical solution.
  • the folding screen includes a first part, a second part and a third part, the third part is located between the first part and the second part, and the first part is supported and fixed on the first shell, and the second part is supported and fixed on the second shell On the body, the third part is supported on the rotating mechanism of the supporting device.
  • the electronic device provided by the embodiment of the present application includes the supporting device described in the above technical solution, both can solve the same technical problem and achieve the same effect.
  • FIG. 1 is a perspective view of an electronic device provided by some embodiments of the present application.
  • FIG. 2 is a schematic structural diagram of the electronic device shown in FIG. 1 when the folding screen is in an unfolded state;
  • FIG. 3 is a schematic structural diagram of the electronic device shown in FIG. 1 when the folding screen is in a folded state;
  • Fig. 4 is a perspective view of the supporting device in the electronic device shown in Fig. 1;
  • Figure 5 is an exploded view of the supporting device shown in Figure 4.
  • Fig. 6 is a schematic structural diagram of a rotating mechanism provided by some embodiments of the present application.
  • Fig. 7 is a front view of the rotation mechanism provided by some other embodiments of the present application when the first connecting part and the second connecting part are in the unfolded position;
  • Fig. 8 is a perspective view of the rotating mechanism shown in Fig. 7 (the first connector and the second connector are not shown);
  • Fig. 9 is an exploded view of the rotating mechanism shown in Fig. 8.
  • Fig. 10 is an assembly diagram of the first gear, the intermediate gear and the second gear in the rotating mechanism provided by some embodiments of the present application;
  • Fig. 11 is an assembly diagram of the first torsion spring and the base in the rotating mechanism shown in Fig. 9;
  • Fig. 12 is a schematic structural view of the first torsion spring in the rotating mechanism shown in Fig. 9;
  • Fig. 13 is a structural schematic diagram of the lifting plate in the rotating mechanism shown in Fig. 9;
  • Fig. 14 is an assembly drawing of the first torsion spring shown in Fig. 12 and the lifting plate shown in Fig. 13;
  • Fig. 15 is a structural schematic view of the rotating mechanism shown in Fig. 7 when the first connecting part and the second connecting part are rotated from the unfolded position to the folded position; wherein, (a) in Fig. 15 is the rotation mechanism when the first connecting part and the second connecting part rotate Schematic diagram of the structure of the two connecting parts when they are in the deployed position; (b) in Figure 15 is a schematic structural diagram of the rotating mechanism when the first connecting part and the second connecting part are in the folded position;
  • Fig. 16 is a perspective view of a rotating mechanism provided in some other embodiments of the present application.
  • Fig. 17 is an exploded view of the rotating mechanism shown in Fig. 16;
  • Fig. 18 is an assembly diagram of the first torsion spring and the first rotating shaft in the rotating mechanism shown in Fig. 17;
  • Fig. 19 is a structural schematic view of the lifting plate in the rotating mechanism shown in Fig. 17 when viewed from bottom to top;
  • Fig. 20 is a structural schematic view of the rotating mechanism shown in Fig. 16 when the first connecting part and the second connecting part are rotated from the unfolded position to the folded position; wherein, (a) in Fig. 20 is the rotation mechanism when the first connecting part and the second connecting part are rotated. Schematic diagram of the structure when the two connectors are in the unfolded position; (b) in Figure 20 is a schematic diagram of the structure of the rotating mechanism when the first connector and the second connector rotate 45°; (c) in Figure 20 is a schematic diagram of the rotating mechanism when Schematic diagram of the structure of the first connecting part and the second connecting part when they are in the folded position.
  • first and second are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features.
  • a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • the term “comprising”, “comprising” or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes Including other elements not expressly listed, or also including elements inherent in such process, method, article or apparatus.
  • an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the present application provides an electronic device, which is a type of electronic device with a folding screen.
  • the electronic equipment includes, but is not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, notebook computers (notebooks), vehicle-mounted Devices and electronic devices such as wearables such as watches.
  • PDAs personal digital assistants
  • notebooks notebook computers
  • vehicle-mounted Devices electronic devices such as wearables such as watches.
  • FIG. 1 is a perspective view of an electronic device 100 provided by some embodiments of the present application.
  • the electronic device 100 is a folding screen mobile phone.
  • the electronic device 100 includes a folding screen 10 and a supporting device 20 . It can be understood that FIG. 1 only schematically shows some components included in the electronic device 100 , and the actual shape, actual size, actual position and actual configuration of these components are not limited by FIG. 1 .
  • the folding screen 10 is used to display images, videos and the like.
  • the folding screen 10 can be folded into a first part 11 and a second part 12 .
  • the folding screen 10 also includes a third part 13 located between the first part 11 and the second part 12 .
  • At least the third part 13 of the folding screen 10 is made of flexible material.
  • the first part 11 and the second part 12 can be made of flexible materials, can also be made of rigid materials, and can also be made of partly rigid materials and partly made of flexible materials, which are not specifically limited here.
  • the folding screen 10 can be an organic light-emitting diode (organic light-emitting diode, OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light-emitting diode (quantum dot light-emitting diodes, QLED) screen , LCD (liquid crystal display, LCD) and so on.
  • OLED organic light-emitting diode
  • micro organic light-emitting diode micro organic light-emitting diode
  • QLED quantum dot light-emitting diodes
  • the folding screen 10 can be folded between an unfolded state and a folded state.
  • FIG. 2 is a schematic structural diagram of the electronic device 100 shown in FIG. 1 when the folding screen 10 is in an unfolded state.
  • the first part 11 , the second part 12 and the third part 13 are coplanar and have the same orientation. In this state, large-screen display can be realized, which can provide users with richer information and bring users a better experience.
  • FIG. 3 is a schematic structural diagram of the electronic device 100 shown in FIG. 1 when the folding screen 10 is in a folded state.
  • the folding screen 10 is in the folded state, the third part 13 is in the bent state, and the first part (not shown in the figure) is opposite to the second part (not shown in the figure).
  • the folding screen 10 is invisible to the user, and the supporting device 20 is protected outside the folding screen 10 to prevent the folding screen 10 from being scratched by hard objects.
  • the supporting device 20 is used to support the folding screen 10 and allow the folding screen 10 to be folded between an unfolded state and a folded state.
  • FIG. 4 is a perspective view of the supporting device 20 in the electronic device 100 shown in FIG. 1 .
  • the supporting device 20 includes a first housing 21 , a second housing 22 and a rotating mechanism 23 . It can be understood that, FIG. 4 only schematically shows some components included in the supporting device 20, and the actual shape, actual size, actual position and actual configuration of these components are not limited by FIG. 4 .
  • the first housing 21 is used to fix and support the first part 11 of the folding screen 10 in FIG. 1 .
  • the first casing 21 has a fitting surface M1
  • the first casing 21 is used to fix and support the first part 11 of the folding screen 10 in FIG. 1 through the fitting surface M1.
  • the second housing 22 is used to fix and support the second part 12 of the folding screen 10 in FIG. 1 .
  • the second casing 22 has a fitting surface M2, and the second casing 22 is used to fix and support the second part 12 of the folding screen 10 in FIG. 1 through the fitting surface M2.
  • the inside of the first housing 21 forms a first receiving cavity (not shown in the figure).
  • the inside of the second housing 22 forms a second receiving cavity (not shown in the figure).
  • the first accommodating chamber and the second accommodating chamber are used for accommodating electronic components such as a motherboard, a battery, a camera module, a speaker, and an earpiece of the electronic device 100 .
  • the first housing 21 can be a structural whole, or can be formed by assembling a plurality of parts.
  • the second housing 22 can be a whole structural member, or can be formed by assembling multiple parts.
  • FIG. 5 is an exploded view of the supporting device 20 shown in FIG. 4 .
  • the first casing 21 includes a first middle frame 211 and a first back cover 212 .
  • the bonding surface M1 is located on the first middle frame 211 .
  • the first back cover 212 is fixed on a side of the first middle frame 211 away from the bonding surface M1.
  • the first receiving cavity is formed between the first middle frame 211 and the first back cover 212 .
  • the second casing 22 includes a second middle frame 221 and a second back cover 222 .
  • the bonding surface M2 is located on the second middle frame 221 .
  • the second back cover 222 is fixed on a side of the second middle frame 221 away from the bonding surface M2.
  • the second receiving cavity is formed between the second middle frame 221 and the second back cover 222 .
  • the rotating mechanism 23 is used to support the third part 13 of the folding screen 10 .
  • the rotating mechanism 23 is connected between the first housing 21 and the second housing 22 , and the first housing 21 and the second housing 22 are rotatably connected through the rotating mechanism 23 .
  • the rotating mechanism 23 is connected between the first middle frame 211 of the first casing 21 and the second middle frame 221 of the second casing 22 .
  • the rotating mechanism 23 may also be connected between the first back cover 212 of the first casing 21 and the second back cover 222 of the second casing 22 .
  • the number of the rotating mechanism 23 can be one, or two or more.
  • Fig. 4 and Fig. 5 only give an example in which the number of rotating mechanisms 23 is two, which should not be regarded as a special limitation to the present application.
  • the two rotating mechanisms 23 are arranged at intervals along the length direction of the folding axis of the folding screen 10 .
  • FIG. 6 is a schematic structural diagram of a rotating mechanism 23 provided by some embodiments of the present application.
  • the rotating mechanism 23 includes a base 231 , a first connecting member 232 , a first supporting arm 233 , a second connecting member 234 , a second supporting arm 235 , a lifting plate 236 and a lifting structure 237 .
  • the first connecting member 232 is rotatably connected to the base 231 via the first rotating shaft 23a.
  • the first connecting member 232 is used for connecting with the first housing 21 .
  • the first support arm 233 is relatively fixed to the first connecting member 232 .
  • the second connecting member 234 is rotatably connected to the base 231 via the second rotating shaft 23b.
  • the first rotating shaft 23a is arranged parallel to the second rotating shaft 23b.
  • the second connecting piece 234 is used for connecting with the second housing 22 .
  • the second support arm 235 is relatively fixed to the second connecting member 234 .
  • the lifting plate 236 is located between the first connecting member 232 and the second connecting member 234 , and the lifting plate 236 is supported on the first supporting arm 233 and the second supporting arm 235 .
  • the lifting plate 236 has a fitting surface M3, and the rotating mechanism 23 is used to support the third part 13 of the folding screen 10 through the fitting surface M3.
  • the bonding surface M3 is coplanar or approximately coplanar with the bonding surface M1 of the first casing 21 and the bonding surface M2 of the second casing 22 , and has the same orientation.
  • the positions of the first connecting part 232 and the second connecting part 234 are the deployed positions.
  • the first link 232 and the second link 234 can rotate between the unfolded position and the folded position.
  • the fitting surface M1 and the fitting surface M2 face each other, between the fitting surface M1 and the fitting surface M3 and between the fitting surface M2 and the fitting surface
  • the M3s are vertical or nearly vertical.
  • an XYZ coordinate system is established, and the extension direction of the first rotating shaft 23a in the rotating mechanism 23 is defined as the Y-axis direction, and the thickness direction of the lifting plate 236 is the Z-axis direction, which is parallel to the lifting plate 236 and parallel to the first rotating shaft 23a.
  • a direction perpendicular to the rotating shaft 23a is the X-axis direction.
  • the lifting structure 237 is located on the side of the lifting plate 236 away from the bonding surface M3 , and the lifting structure 237 is connected with the lifting plate 236 .
  • the lifting structure 237 is used to apply a driving force to the lifting plate 236 away from the bonding surface M3.
  • the driving force can drive the lifting plate 236 Sink in a direction away from the fitting surface M3 to avoid the folding screen 10 .
  • the first connecting member 232 and the second connecting member 234 rotate from the folded position to the unfolded position, the first support arm 233 and the second support arm 235 apply an upward support force to the lifting plate 236, and the support force can overcome the driving force, The fitting surface M3 of the lifting plate 236 is lifted to be flush with the fitting surface M1 and the fitting surface M2.
  • the lifting structure 237 is a coil spring. One end of the coil spring is connected to the lifting plate 236 , and the other end is connected to the base 231 .
  • the coil spring is in a stretched and deformed state, so as to apply an elastic force to the lifting plate 236 away from the adhering surface M3. This elastic force forms the aforementioned driving force.
  • the lifting structure 237 includes a magnet (not shown in the figure) and a magnetic conductive sheet (not shown in the figure). One of the magnet and the magnetic conducting sheet is fixed on the lifting plate 235 , and the other of the magnet and the magnetic conducting sheet is fixed on the base 231 .
  • the occupied heights of the two lifting structures 237 in the Z-axis direction are relatively large, resulting in a large thickness of the supporting device 20 and the electronic device 100 when the first connecting member 232 and the second connecting member 234 are in the unfolded position, which is not conducive to electronic The light and thin design of the device 100.
  • the rotating mechanism 23 includes a base 231 , a first connecting member 232 , a first supporting arm 233 , a second connecting member 234 , a second supporting arm 235 , a lifting plate 236 and a lifting structure 237 .
  • FIG. 7 only schematically shows some components included in the rotating mechanism 23 , and the actual shape, actual size, actual position and actual configuration of these components are not limited by FIG. 7 .
  • the first connecting member 232 is rotatably connected to the base 231 via the first rotating shaft 23a.
  • the first connecting member 232 is fixed on the first rotating shaft 23a.
  • the first connecting member 232 is provided with a fixing hole (not shown in the figure), through which the first connecting member 232 is passed through the first rotating shaft 23a, and is fitted with the first rotating shaft 23a through an interference fit , Welding, setting flat position and other ways to fix together.
  • FIG. 8 is a perspective view of the rotating mechanism 23 shown in FIG. 7 (the first connecting member 232 and the second connecting member 234 are not shown), and FIG. (The first connector 232 and the second connector 234 are not shown).
  • the base 231 is provided with a first rotation hole 231a, and the first rotation shaft 23a passes through the first rotation hole 231a, and can rotate in the first rotation hole 231a. In this way, when the first connecting member 232 rotates relative to the base 231, the first rotating shaft 23a also rotates accordingly.
  • the first connecting member 232 is provided with a rotating hole, the first connecting member 232 is sleeved on the first rotating shaft 23a through the rotating hole, and can rotate around the first rotating shaft 23a, and the first rotating shaft 23a is fixed on on the base 231. In this way, when the first connecting member 232 rotates relative to the base 231 , the first rotating shaft 23 a is fixed relative to the base 231 .
  • the first connecting member 232 is used to connect with the first casing 21 .
  • the first connecting member 232 can be fixed together with the first housing 21 by means of welding, riveting, screwing, etc., or can be slidably or rotatably connected with the first housing 21 .
  • the first connecting member 232 may be directly connected to the first casing 21 , or may be indirectly connected to the first casing 21 through other intermediate structures.
  • the first connecting member 232 is directly and fixedly connected to the first housing 21 by means of threaded connection, riveting, welding or the like.
  • the second connecting member 234 is rotatably connected to the base 231 by means of the second rotating shaft 23b.
  • the first rotating shaft 23a is arranged parallel or approximately parallel to the second rotating shaft 23b.
  • the second connecting member 234 is fixed on the second rotating shaft 23b.
  • the second connecting member 234 is provided with a fixing hole (not shown in the figure), through which the second connecting member 234 passes through the second rotating shaft 23b, and is interference fit with the second rotating shaft 23b , Welding, setting flat position and other ways to fix together.
  • the base 231 is provided with a second rotation hole 231b, and the second rotation shaft 23b passes through the second rotation hole 231b and can rotate in the second rotation hole 231b. In this way, when the second rotating shaft 23b rotates relative to the base 231, the second rotating shaft 23b also rotates accordingly.
  • the second connecting member 234 is provided with a rotating hole, through which the second connecting member 234 is sleeved on the second rotating shaft 23b and can rotate around the second rotating shaft 23b, and the second rotating shaft 23b is fixed on the base 231 on. In this way, when the second connecting member 234 rotates relative to the base 231 , the second rotating shaft 23b is fixed relative to the base 231 .
  • the second connecting member 234 is used to connect with the second housing 22 .
  • the second connecting member 234 can be fixed with the second housing 22 through welding, riveting, screwing, etc., or can be slidably or rotatably connected with the second housing 22 .
  • the second connecting member 234 may be directly connected to the second housing 22 , or may be indirectly connected to the second housing 22 through other intermediate structures.
  • the second connecting member 234 is directly and fixedly connected to the second housing 22 by means of threaded connection, riveting, welding or the like.
  • the first rotating shaft 23 a and the second rotating shaft 23 b can be used only as rotating shafts, or can be used as gear shafts that drive the first connecting member 232 and the second connecting member 234 to move synchronously.
  • a first gear 238 is fixed on the first rotating shaft 23a.
  • the central axis of the first gear 238 is collinear with the central axis of the first rotating shaft 23a.
  • a second gear 239 is fixed on the second rotating shaft 23b.
  • the central axis of the second gear 239 is in line with the central axis of the second rotating shaft 23b.
  • the diameter of the first gear 238 and the second gear 239 are equal.
  • the first gear 238 is engaged with the second gear 239 for transmission.
  • an even number of intermediate gears is provided between the first gear 238 and the second gear 239 , and the first gear 238 , the even number of intermediate gears, and the second gear 239 are sequentially meshed for transmission.
  • the first connecting member 232 and the second connecting member 234 can be driven to rotate synchronously in opposite directions through the first gear 238 and the second gear 239 , or through the first gear 238 , an even number of intermediate gears and the second gear 239 .
  • the first connecting member 232 and the second connecting member 234 can be driven to move synchronously.
  • the number of intermediate gears can be 2, 4, 6, etc., and as the number of intermediate gears increases, the diameter of the intermediate gear, the diameter of the first gear 238, and the diameter of the second gear 239 It can be designed smaller to reduce the height of the rotating mechanism 23 in the Z-axis direction.
  • the structural complexity of the rotating mechanism 23 also increases. Therefore, in order to take into account both the height and the structural complexity of the rotating mechanism 23, in some embodiments, please refer to FIG. 10, the first gear 238, the intermediate gear 340 and the second The assembly drawing of the gear 239, in this embodiment, the number of the intermediate gear 340 is 2.
  • the lifting plate 236 is located between the first connecting member 232 and the second connecting member 234 .
  • the lifting plate 236 has a fitting surface M3, and the rotating mechanism 23 is used to support the third part 13 of the folding screen 10 through the fitting surface M3.
  • the bonding surface M3 is coplanar with the bonding surface M1 of the first casing 21 and the bonding surface M2 of the second casing 22 and has the same orientation.
  • the positions of the first connecting member 232 and the second connecting member 234 are deployed positions.
  • the first link 232 and the second link 234 can rotate between the unfolded position and the folded position.
  • the lifting structure 237 is connected with the lifting plate 236 .
  • the lifting structure 237 includes a first torsion spring 2371 and a second torsion spring 2372 .
  • the first torsion spring 2371 includes a first helical body 2371a and a first torsion arm 2371b.
  • the first screw body 2371a is sleeved on the first rotating shaft 23a, and the first rotating shaft 23a can rotate in the first screw body 2371a.
  • the first spiral body 2371a can be directly sleeved on the first rotating shaft 23a.
  • FIG. 11 is an assembly diagram of the first torsion spring 2371 and the base 231 in the rotating mechanism 23 shown in FIG. 9 .
  • a shaft sleeve 231c is disposed on the base 231 .
  • the shaft sleeve 231c is sleeved on the first rotating shaft 23a, and the first rotating shaft 23a can rotate in the shaft sleeve 231c.
  • the first spiral body 2371a is sleeved on the sleeve 231c.
  • the first screw body 2371a is indirectly sleeved on the first rotating shaft 23a through the bushing 231c, and the contact surface between the bushing 231c and the first rotating shaft 23a is relatively large, which can avoid jamming due to stress concentration during relative rotation. die.
  • the first torsion arm 2371b is located on a side of the lifting plate 236 away from the adhering surface M3 .
  • One end of the first torsion arm 2371b is fixed to one end of the first screw body 2371a, and the other end of the first torsion arm 2371b is slidably connected to the lifting plate 236 along the first direction (that is, the X-axis direction).
  • FIG. 12 is a schematic structural diagram of the first torsion spring 2371 in the rotating mechanism 23 shown in FIG. 9 .
  • the first torsion arm 2371b of the first torsion spring 2371 is provided with a hooking portion A.
  • the first helical body 2371a includes a first helical portion 2371a1 and a second helical portion 2371a2 .
  • the first helical part 2371a1 and the second helical part 2371a2 are sheathed on the first rotating shaft 23a in FIG. 9 .
  • the first helical portion 2371a1 and the second helical portion 2371a2 are arranged at intervals along the Y-axis direction.
  • the end of the first helical portion 2371a1 close to the second helical portion 2371a2 is the first end of the first helical portion 2371a1.
  • the end of the second helical portion 2371a2 close to the first helical portion 2371a1 is the first end of the second helical portion 2371a2.
  • the first torsion arm 2371b is n-type. Two ends of the first torsion arm 2371b are respectively fixed between the first end of the first helical portion 2371a1 and the first end of the second helical portion 2371a2.
  • the middle bending part of the first torsion arm 2371b forms the hooking part A. As shown in FIG.
  • FIG. 13 is a structural schematic diagram of the lifting plate 236 in the rotating mechanism 23 shown in FIG. 9 .
  • a hook 2361 is provided on the surface of the lifting plate 236 away from the fitting surface M3, and the hook 2361 has a guide section 2361a extending along the X-axis direction.
  • FIG. 14 is an assembly diagram of the first torsion spring 2371 shown in FIG. 12 and the lifting plate 236 shown in FIG. 13 .
  • the first torsion arm 2371b is hooked on the hook 2361 through the hooking portion A and can slide along the guide section 2361a.
  • This structure is simple and easy to implement.
  • the slidable connection between the first torsion arm 2371b and the lifting plate 236 may also be a cooperative sliding connection between a slider and a slide slot, which is not specifically limited here.
  • the other end of the first spiral body 2371 a is fixed on the base 231 .
  • the first torsion spring 2371 further includes a third torsion arm 2371c.
  • the third torsion arm 2371c forms the other end of the first helical body 2371a.
  • the first screw body 2371a is fixed on the base 231 through the third torsion arm 2371c.
  • the third torsion arm 2371c can be fixed on the base 231 by welding.
  • the base 231 is provided with a limiting groove 231d.
  • the limiting groove 231d extends along a direction parallel to the first rotating shaft 23a, and the third torsion arm 2371c is fitly embedded in the limiting groove 231d.
  • This fixing method does not require complicated welding operations, and can improve the assembly efficiency of the rotating mechanism 23 .
  • the end of the first helical portion 2371a1 away from the second helical portion 2371a2 is the second end of the first helical portion 2371a1 .
  • the end of the second helical portion 2371a2 away from the first helical portion 2371a1 is the second end of the second helical portion 2371a2.
  • the first screw body 2371a is fixed on the base 231 through the two third torsion arms 2371c.
  • the first torsion spring 2371 has a symmetrical design, and the first helical body 2371a can be fixed on the base 231 (see FIG. 11 ) through two third torsion arms 2371c, which can ensure the first helical body 2371a on the base 231. Fixed stability.
  • the second torsion spring 2372 includes a second helical body 2372a and a second torsion arm 2372b.
  • the second screw body 2372a is sheathed on the second rotating shaft 23b, and the second rotating shaft 23b can rotate relative to the second screw body 2372a. It can be understood that the specific nesting method of the second screw body 2372a and the second rotating shaft 23b can be implemented with reference to the above-mentioned nesting method of the first screw body 2371a and the first rotating shaft 23a, and will not be repeated here.
  • the second torsion arm 2372b is located on a side of the lifting plate 236 away from the adhering surface M3.
  • One end of the second torsion arm 2372b is fixed to one end of the second screw body 2372a, and the other end of the second torsion arm 2372b is slidably connected to the lifting plate 236 along the X-axis direction.
  • the slidable connection between the second torsion arm 2372b and the lifting plate 236 can refer to the above-mentioned embodiment of the slidable connection between the first torsion arm 2371b and the lifting plate 236 , which will not be repeated here.
  • the other end of the second spiral body 2372a is fixed on the base 231 .
  • the second torsion spring 2372 further includes a fourth torsion arm 3272c.
  • the fourth torsion arm 3272c forms the other end of the second helical body 3272a.
  • the second screw body 2372a is fixed on the base 231 through the fourth torsion arm 3272c.
  • the specific fixing method of the fourth torsion arm 3272c and the base 231 can be implemented with reference to the above-mentioned fixing method of the third torsion arm 2371c and the base 231, and will not be repeated here.
  • Both the first support arm 233 and the second support arm 235 are located on a side of the lifting plate 236 away from the bonding surface M3.
  • first support arm 233 is fixed on the first rotating shaft 32a.
  • first support arm 233 may be welded and fixed on the first rotating shaft 32a.
  • the side of the first rotating shaft 23a is provided with a first flat position 23a1.
  • "flat position" refers to the planar part formed by milling and other methods on the side, and the shaft with flat position is also called flat shaft.
  • the inner wall of the hole can also be provided with a flat, and the hole with the flat is also called a flat hole. The cooperation between the flat hole and the flat shaft can prevent the relative rotation of the hole and the shaft.
  • the number of the first flat 23a1 can be one or more.
  • first flat positions 23 a 1 there are two first flat positions 23 a 1 , and the two first flat positions 23 a 1 are respectively disposed at two ends of the first rotating shaft 23 a along its own radial direction.
  • the number of the first flat position 23a1 may also be one.
  • the first support arm 233 is provided with a flat hole 233a, and the first support arm 233 is fitted on the first rotating shaft 23a through the flat hole 233a. Therefore, the first support arm 233 is prevented from rotating around the first rotating shaft 32a, and the relative position of the first supporting arm 233 and the first rotating shaft 23a is fixed. With this fixing method, the connection stability between the first support arm 233 and the first rotating shaft 23a is better, and the installation is convenient, which can reduce the difficulty of assembling the rotating mechanism 23 and improve the assembly efficiency of the rotating mechanism 23 .
  • the other end of the first supporting arm 233 extends toward the direction close to the second rotating shaft 23b.
  • one end of the second support arm 235 is fixed on the second rotating shaft 23b.
  • the specific fixing method of the second support arm 235 and the second rotating shaft 23b can be implemented with reference to the above-mentioned fixing method of the first supporting arm 233 and the first rotating shaft 23a, and details will not be repeated here.
  • the other end of the second supporting arm 235 extends toward the direction close to the first rotating shaft 23a.
  • FIG. 15 is a structural diagram of the rotating mechanism 23 shown in FIG. 7 when the first connecting member 232 and the second connecting member 234 rotate from the unfolded position to the folded position.
  • FIG. 15 is a schematic structural view of the rotating mechanism 23 when the first connecting member 232 and the second connecting member 234 are in the unfolded position.
  • the lifting plate 236 is supported on the first support arm 233 and the second support arm 235 .
  • the first torsion arm 2371b and the second torsion arm 2372b are in a swinging deformation state toward a direction approaching the bonding surface M3.
  • the positions shown by the dotted lines of the first torsion arm 2371b and the second torsion arm 2372b are that the first torsion arm 2371b and the second torsion arm 2372b are in a free state (that is, a state without force) ) under the position.
  • the position shown by the solid line of the first torsion arm 2371b and the second torsion arm 2372b is: when the first connecting member 232 and the second connecting member 234 are in the unfolded position, the first torsion arm 2371b and the second torsion arm 2372b are located Location.
  • the position shown by the solid line swings by a certain angle ⁇ in the direction closer to the bonding surface M3. That is to say, the first torsion arm 2371b and the second torsion arm 2372b are in a swinging deformation state toward the direction of approaching the adhering surface M3.
  • the swing deformation angle is ⁇ .
  • ⁇ is greater than 0° and less than or equal to 85°.
  • the swing deformation angle ⁇ is 45°. In this way, it is convenient to control the sinking height of the lifting plate 236 .
  • the lifting plate 236 loses its supporting force, and the first torsion arm 2371b and the second torsion arm 2372b swing away from the fitting surface M3 along the direction b1 and the direction b2 respectively under the action of their own elastic force. While swinging, the first torsion arm 2371b and the second torsion arm 2372b slide relative to the lifting plate 236 along the direction c1 and the direction c2 respectively. Thus, the lifting plate 236 can be driven to move downward along the direction d.
  • FIG. 15 is a schematic structural view of the rotating mechanism 23 when the first connecting member 232 and the second connecting member 234 are in the folded position. In this position, a drop-shaped folding screen 10 can be formed to increase the reliability and service life of the folding screen 10 .
  • the first connecting member 232 and the second connecting member 234 rotate from the folded position to the unfolded position, the first connecting member 232 and the second connecting member 234 swing in opposite directions of the direction d1 and the direction d2 respectively, During the swinging process after touching the lifting plate 236, the lifting plate 236 can be jacked up. At the same time, the first torsion arm 2371b and the second torsion arm 2372b are oscillatingly deformed in a direction close to the adhering surface M3. Thus, the bonding surface M3 of the lifting plate 236 is flush with the bonding surface M1 and the bonding surface M2, so that the folding screen 10 supported thereon is flat.
  • FIG. 16 is a perspective view of a rotating mechanism 23 provided by some other embodiments of the present application
  • FIG. 17 is an exploded view of the rotating mechanism 23 shown in FIG. 16
  • the base 231 is not shown in this embodiment.
  • the difference between the rotating mechanism 23 shown in this embodiment and the rotating mechanism 23 shown in FIGS. 7-9 is that the rotating mechanism 23 does not include the first support arm 233 and the second support arm 235 .
  • the first screw body 2371a is fixedly sleeved on the first rotating shaft 23a
  • the second screw body 2372a is fixedly sleeved on the second rotating shaft 23b.
  • the third torsion arm 2371c is fixedly connected to the first connecting member 232
  • the fourth torsion arm 3272c is fixedly connected to the second connecting member 234 .
  • the rotating mechanism 23 may not include the third torsion arm 2371c and the fourth torsion arm 3272c.
  • the first screw body 2371a is fixedly sleeved on the first rotating shaft 23a, which means: the first screw body 2371a is sleeved on the first rotating shaft 23a, and the first screw body 2371a and the first rotating shaft 23a The relative positions are fixed and cannot rotate around the first rotating shaft 23a.
  • the first spiral body 2371a sleeves and is fixed on the first rotating shaft 23a by spot welding.
  • FIG. 18 is an assembly diagram of the first torsion spring 2371 and the first rotating shaft 23 a in the rotating mechanism 23 shown in FIG. 17 .
  • the first rotating shaft 23a is provided with a second flat position 23a2.
  • the inner hole of the first spiral body 2371a is a flat hole.
  • the first screw body 2371a fits and sleeves on the first rotating shaft portion where the second flat position 23a2 is located through the inner hole. In this way, the connection stability between the first torsion spring 2371 and the first rotating shaft 23a is better, and the installation is convenient, which can reduce the difficulty of assembling the rotating mechanism 23 and improve the assembly efficiency of the rotating mechanism 23 .
  • the second helical body 2372a is fixedly sleeved on the second rotating shaft 23b, which refers to: the second helical body 2372a is sleeved on the second rotating shaft 23b, and the relative position of the second helical body 2372a and the second rotating shaft 23b It is fixed and cannot rotate around the second rotating shaft 23b.
  • the specific fixing method of the second screw body 2372a and the second rotating shaft 23b can be implemented with reference to the above-mentioned fixing method of the first screw body 2371a and the first rotating shaft 23a, and will not be repeated here.
  • FIG. 19 is a structural schematic view of the lifting plate 236 in the rotating mechanism 23 shown in FIG. 17 when viewed from bottom to top.
  • a hook 2361 is provided on the lifting plate 236 at a position corresponding to each hooking portion A.
  • FIG. 20 is a structural schematic diagram of the rotating mechanism 23 shown in FIG. 16 when the first connecting member 232 and the second connecting member 234 rotate from the unfolded position to the folded position.
  • (a) in FIG. 20 is a structural schematic diagram of the rotating mechanism 23 when the first connecting member 232 and the second connecting member 234 are in the unfolded position.
  • the first torsion arm 2371b and the second torsion arm 2372b can be driven to swing along the direction b1 and the direction b2 respectively away from the bonding surface M3 of the lifting plate 236.
  • FIG. 20 is a schematic structural view of the rotating mechanism 23 when the first connecting member 232 and the second connecting member 234 are rotated by 45°.
  • FIG. 20 is a schematic structural view of the rotating mechanism 23 when the first connecting member 232 and the second connecting member 234 are in the folded position. In this position, the lifting plate 236 sinks to the lowest position, thereby forming a drop-shaped folding screen 10 (not shown), so as to increase the reliability and service life of the folding screen 10 .
  • the first connecting member 232 and the second connecting member 234 rotate from the folded position to the unfolded position, the first torsion arm 2371b and the second torsion arm 2372b can be driven along the direction opposite to the direction b1 and the direction b2 respectively.
  • the opposite direction of the lifting plate 236 is close to the direction of the bonding surface M3 swing, while swinging, the first torsion arm 2371b and the second torsion arm 2372b are opposite to the direction c1 and the direction c2 respectively relative to the lifting plate 236 Sliding, so that the lifting plate 236 can be driven to lift in the opposite direction of the direction d, so that the fitting surface M3 of the lifting plate 236 is flush with the fitting surface M1 and the fitting surface M2, so that the folding screen 10 supported on it smooth.
  • the first torsion spring 2371 and the second torsion spring 2372 are installed respectively by using the surrounding space of the first rotation shaft 23a and the second rotation shaft 23b, and the first torsion spring 2371 and the second torsion spring 2372 drives the lifting plate 236 to sink and rise, which can reduce the occupied height of the lifting structure 237 in the Z-axis direction, thereby making the electronic device lighter and thinner when it is unfolded.
  • the supporting device 20 provided in the embodiment of the present application includes the rotating mechanism 23 described in any of the above embodiments, the two can solve the same technical problem and achieve the same effect.
  • the electronic device 100 provided in the embodiment of the present application includes the supporting device 20 described in any one of the above embodiments, the two can solve the same technical problem and achieve the same effect.

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Abstract

一种转动机构、支撑装置和电子设备，涉及电子设备技术领域，能够使得电子设备在展开状态时更轻薄。转动机构包括底座、第一连接件、第二连接件、升降板、第一扭簧和第二扭簧。第一连接件和第二连接件分别借助第一转轴和第二转轴可转动连接于底座上。第一扭簧包括第一螺旋本体和第一扭臂，第一螺旋本体套设于第一转轴上，第一扭臂的一端与第一螺旋本体的一端固定，第一扭臂的另一端沿第一方向可滑动连接于升降板上。第二扭簧包括第二螺旋本体和第二扭臂，第二螺旋本体套设于第二转轴上，第二扭臂的一端与第二螺旋本体的一端固定，第二扭臂的另一端沿第一方向可滑动连接于升降板上。该转动机构用于支撑折叠屏的弯折部分。

Description

一种转动机构、支撑装置和电子设备
本申请要求于2021年05月27日提交国家知识产权局、申请号为202110587683.5、发明名称为“一种转动机构、支撑装置和电子设备”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
本申请涉及电子设备技术领域，尤其涉及一种转动机构、支撑装置和电子设备。
背景技术
随着折叠屏技术的发展，具有折叠屏的电子设备已经成为热点技术。现有的折叠方式分为内折与外折，即屏幕折叠后处于内侧或外侧。外折的问题是屏幕处于暴露状态，容易被硬物刮伤。
针对现有的折叠屏，往往需要在支撑装置中间的弯折区域设置底座、门板、同步机构、升降板等部件，以使折叠屏的左右两部分同步旋转，并在展开状态与折叠状态之间变化。当折叠屏处于展开状态时，门板和升降板平齐，以使支撑于其上的折叠屏平整。当折叠屏处于折叠状态时，一方面，门板转动至相对于升降板呈一定倾斜角度，另一方面，升降板下沉，使得折叠屏的弯折部分被折叠成类似“水滴状”结构。这种“水滴状”折叠屏部分具有较大的内折角，从而有更高的可靠性和使用寿命。但是目前，这一类折叠屏电子设备内，用于驱动升降板下沉的升降机构结构复杂，在折叠屏处于展开状态时沿电子设备厚度方向的尺寸较大，因此不利于降低电子设备在展开状态时的厚度，从而不利于电子设备的薄型化设计。
发明内容
本申请的实施例提供一种转动机构、支撑装置和电子设备，能够减小升降机构在电子设备处于展开状态时，沿电子设备的厚度方向的尺寸，使得电子设备在展开状态时更轻薄。
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，本申请一些实施例提供一种转动机构，该转动机构包括底座、第一连接件、第二连接件、升降板、第一扭簧和第二扭簧。第一连接件借助第一转轴可转动连接于底座上，第一连接件用于连接第一壳体。第二连接件借助第二转轴可转动连接于底座上，第二连接件用于连接第二壳体。其中，第二转轴与第一转轴平行。升降板位于第一连接件与第二连接件之间。升降板具有贴合面，该贴合面用于贴合折叠屏的一部分。第一扭簧包括第一螺旋本体和第一扭臂。第一螺旋本体套设于第一转轴上，第一扭臂位于升降板远离贴合面的一侧，且第一扭臂的一端与第一螺旋本体的一端固定，第一扭臂的另一端沿第一方向可滑动连接于升降板上。第二扭簧包括第二螺旋本体和第二扭臂，第二螺旋本体套设于第二转轴上，第二扭臂位于升降板远离贴合面的一侧，且第二扭臂的一端与第二螺旋本体的一端固定，第二扭臂的另一端沿第一方向可滑动连接于升降板上。其中，第一方向与升降板平行并与第一转轴垂直。
第一连接件和第二连接件能够相对于底座在展开位置与折叠位置之间转动，第一 连接件和第二连接件在由展开位置向折叠位置转动时，可以带动第一扭臂和第二扭臂远离升降板的贴合面摆动，以带动升降板下沉，第一连接件和第二连接件在由折叠位置向展开位置转动时，可以带动第一扭臂和第二扭臂靠近升降板的贴合面摆动，以带动升降板上升。
本申请实施例提供的转动机构中，利用第一转轴和第二转轴的周围空间分别安装第一扭簧和第二扭簧，并通过第一扭簧和第二扭簧带动升降板下沉和上升运动，能够降低升降结构在电子设备在展开状态时的厚度方向上的占用高度，从而使得电子设备在展开状态时更轻薄。
在第一方面的一种可能的实现方式中，第一连接件固定于第一转轴上，底座上设有第一转动孔，第一转轴穿设于第一转动孔内，并能够在第一转动孔内转动。第二连接件固定于第二转轴上，底座上设有第二转动孔，第二转轴穿设于第二转动孔内并能够在第二转动孔内转动。此结构简单，容易实现。
在第一方面的一种可能的实现方式中，第一转轴上固定有第一齿轮，第一齿轮的中轴线与第一转轴的中轴线共线。第二转轴上固定有第二齿轮，该第二齿轮的中轴线与第二转轴的中轴线共线。第一齿轮与第二齿轮直径相等，第一齿轮与第二齿轮啮合传动，或者，第一齿轮与第二齿轮之间设有偶数个中间齿轮，该第一齿轮、该偶数个中间齿轮、该第二齿轮依次啮合传动。这样，通过第一齿轮与第二齿轮，或者通过第一齿轮、偶数个中间齿轮与第二齿轮可以驱动第一连接件和第二连接件沿相反方向同步转动。
在第一方面的一种可能的实现方式中，中间齿轮的数量为2个。这样，可以同时兼顾转动机构的高度和结构复杂度。
在第一方面的一种可能的实现方式中，第一螺旋本体套设于第一转轴上，第一转轴能够在第一螺旋本体内转动，第一螺旋本体的另一端固定于底座上。第二螺旋本体套设于第二转轴上，第二转轴能够在第二螺旋本体内转动，第二螺旋本体的另一端固定于底座上。转动机构还包括第一支撑臂和第二支撑臂。第一支撑臂和第二支撑臂均位于升降板远离贴合面的一侧，第一支撑臂的一端固定于第一转轴上，第一支撑臂的另一端向靠近第二转轴的方向延伸，第二支撑臂的一端固定于第二转轴上，第二支撑臂的另一端向靠近第一转轴的方向延伸。当第一连接件和第二连接件处于展开位置时，升降板支撑于第一支撑臂和第二支撑臂上，第一扭臂和第二扭臂处于向靠近贴合面的方向的摆动变形状态中。当第一连接件和第二连接件在由展开位置向折叠位置转动时，第一支撑臂和第二支撑臂远离贴合面摆动，第一扭臂和第二扭臂在自身弹性力作用下远离贴合面摆动。第一连接件和第二连接件在由折叠状态向展开状态转动时，可以通过第一支撑臂和第二支撑臂抬升升降板，以带动第一扭臂和第二扭臂靠近贴合面摆动。
在第一方面的一种可能的实现方式中，当第一连接件和第二连接件处于展开位置时，第一扭臂和第二扭臂向靠近贴合面的方向的摆动变形角度大于0°，且小于等于85°。一些实施例中，摆动变形角度为45°。这样，第一连接件和第二连接件在由展开位置向折叠位置转动角度时，升降板下沉至最低位置，之后，第一连接件和第二连接件继续旋转过程中，升降板不会继续下沉。这样，便于对升降板的下沉高度的控制。
在第一方面的一种可能的实现方式中，底座上设有轴套，轴套可转动套设于第一 转轴上，第一螺旋本体套设于轴套上。这样，第一螺旋本体通过轴套间接套设于第一转轴上，轴套与第一转轴之间的接触面较大，能够避免在相对转动时因出现应力集中而导致卡死。
在第一方面的一种可能的实现方式中，底座上设有限位槽，该限位槽沿平行于第一转轴的方向延伸，第三扭臂配合嵌设于限位槽内。由此实现了第三扭臂与底座的固定，无需复杂的焊接操作，可以提高转动机构的装配效率。
在第一方面的一种可能的实现方式中，第一转轴上设有第一扁位，第一支撑臂的一端设有扁位孔，第一支撑臂通过扁位孔配合套设于第一转轴上。这样，第一支撑臂与第一转轴的连接稳定性较优，且安装方便，能够降低转动机构的装配难度，提高转动机构的装配效率。
在第一方面的一种可能的实现方式中，第一扭臂上设有挂接部，升降板远离贴合面的表面设有挂钩，挂钩具有沿第一方向延伸的导向段，第一扭臂通过挂接部挂接于挂钩上并能够沿导向段滑动。由此实现了第一扭臂与升降板的可滑动连接，此结构简单，容易实现。
在第一方面的一种可能的实现方式中，第一螺旋本体包括第一螺旋部分和第二螺旋部分，第一螺旋部分和第二螺旋部分套设于第一转轴上，第一螺旋部分、第二螺旋部分沿第一转轴的长度方向间隔设置。第一螺旋部分靠近第二螺旋部分的一端为第一螺旋部分的第一端。第二螺旋部分靠近第一螺旋部分的一端为第二螺旋部分的第一端。第二螺旋部分远离第一螺旋部分的一端为第二螺旋部分的第二端。第一扭臂呈n型，第一扭臂的两端分别固定于第一螺旋部分的第一端与第二螺旋部分的第一端之间，第一扭臂的中部弯折部分形成所述挂接部。
在第一方面的一种可能的实现方式中，第一螺旋部分远离第二螺旋部分的一端为第一螺旋部分的第二端。第二螺旋部分远离第一螺旋部分的一端为第二螺旋部分的第二端。第一螺旋本体通过第一螺旋部分的第二端和第二螺旋部分的第二端固定于底座上。这样，第一扭簧呈对称设计，且第一扭簧可以通过第一螺旋部分的第二端和第二螺旋部分的第二端固定于底座上，能够保证第一扭簧与底座的连接稳定性。
在第一方面的一种可能的实现方式中，第一螺旋本体固定套设于第一转轴上，第一扭臂位于第一转轴靠近第二转轴的一侧，第二螺旋本体固定套设于第二转轴上，第二扭臂位于第二转轴靠近第一转轴的一侧。第一连接件和第二连接件在由展开位置向折叠位置转动时，可以带动第一扭臂和第二扭臂远离升降板的贴合面摆动，第一连接件和第二连接件在由折叠位置向展开位置转动时，可以带动第一扭臂和第二扭臂靠近升降板的贴合面摆动。此结构组成简单，转动机构的成本较低。
在第一方面的一种可能的实现方式中，第一转轴上设有第二扁位，第一螺旋本体的内孔为扁位孔，第一螺旋本体通过内孔配合套设于第一转轴上。这样，第一扭簧与第一转轴的连接稳定性较优，且安装方便，能够降低转动机构的装配难度，提高转动机构的装配效率。
第二方面，本申请一些实施例提供一种支撑装置，该支撑装置包括第一壳体、第二壳体和如上任一技术方案所述的转动机构，该转动机构位于第一壳体与第二壳体之间，且转动机构的第一连接件与第一壳体连接，转动机构的第二连接件与第二壳体连 接。
由于本申请实施例提供的支撑装置包括如上任一技术方案所述的转动机构，因此二者能够解决相同的技术问题，并达到相同的效果。
第三方面，本申请一些实施例提供一种电子设备，该电子设备包括折叠屏和如上技术方案所述的支撑装置。折叠屏包括第一部分、第二部分和第三部分，第三部分位于第一部分与第二部分之间，且第一部分支撑并固定于第一壳体上，第二部分支撑并固定于第二壳体上，第三部分支撑于支撑装置的转动机构上。
由于本申请实施例提供的电子设备包括如上技术方案所述的支撑装置，因此二者能够解决相同的技术问题，并达到相同的效果。
附图说明
图1为本申请一些实施例提供的电子设备的立体图；
图2为图1所示电子设备在折叠屏处于展开状态时的结构示意图；
图3为图1所示电子设备在折叠屏处于折叠状态时的结构示意图；
图4为图1所示电子设备中支撑装置的立体图；
图5为图4所示支撑装置的爆炸图；
图6为本申请一些实施例提供的转动机构的结构示意图；
图7为本申请又一些实施例提供的转动机构在第一连接件和第二连接件处于展开位置时的主视图；
图8为图7所示转动机构(未示出第一连接件和第二连接件)的立体图；
图9为图8所示转动机构的爆炸图；
图10为本申请一些实施例提供的转动机构中第一齿轮、中间齿轮和第二齿轮的装配图；
图11为图9所示转动机构中第一扭簧与底座的装配图；
图12为图9所示转动机构中第一扭簧的结构示意图；
图13为图9所示转动机构中升降板的结构示意图；
图14为图12所示第一扭簧与图13所示升降板的装配图；
图15为图7所示转动机构在第一连接件和第二连接件由展开位置向折叠位置旋转时的结构示意图；其中，图15中的(a)为转动机构在第一连接件和第二连接件处于展开位置时的结构示意图；图15中的(b)为转动机构在第一连接件和第二连接件处于折叠位置时的结构示意图；
图16为本申请又一些实施例提供的转动机构的立体图；
图17为图16所示转动机构的爆炸图；
图18为图17所示转动机构中第一扭簧与第一转轴的装配图；
图19为图17所示转动机构中升降板由下向上看时的结构示意图；
图20为图16所示转动机构在第一连接件和第二连接件由展开位置向折叠位置旋转时的结构示意图；其中，图20中的(a)为转动机构在第一连接件和第二连接件处于展开位置时的结构示意图；图20中的(b)为转动机构在第一连接件和第二连接件转动45°时的结构示意图；图20中的(c)为转动机构在第一连接件和第二连接件处于折叠位置时的结构示意图。
具体实施方式
在本申请实施例中，术语“第一”、“第二”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”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，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。
本申请提供一种电子设备，该电子设备为具有折叠屏的一类电子设备。具体的，该电子设备包括但不限于手机、平板电脑(tablet personal computer)、膝上型电脑(laptop computer)、个人数码助理(personal digital assistant，PDA)、个人计算机、笔记本电脑(notebook)、车载设备和穿戴设备(比如手表)等电子设备。
请参阅图1，图1为本申请一些实施例提供的电子设备100的立体图。在本实施例中，电子设备100为折叠屏手机。电子设备100包括折叠屏10和支撑装置20。可以理解的是，图1仅示意性的示出了电子设备100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1的限制。
折叠屏10用于显示图像、视频等。折叠屏10可折叠成第一部分11和第二部分12。折叠屏10还包括位于第一部分11与第二部分12之间的第三部分13。折叠屏10的至少第三部分13采用柔性材料制作。第一部分11和第二部分12可以采用柔性材料制作，也可以采用刚性材料制作，还可以部分采用刚性材料、部分采用柔性材料制作，在此不做具体限定。
具体的，折叠屏10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。
折叠屏10能够在展开状态与折叠状态之间折叠。
请参阅图2，图2为图1所示电子设备100在折叠屏10处于展开状态时的结构示意图。当折叠屏10处于展开状态时，第一部分11、第二部分12和第三部分13共平面设置，且朝向相同。在此状态下，能够实现大屏显示，可以给用户提供更丰富的信息，带给用户更好的使用体验。
请参阅图3，图3为图1所示电子设备100在折叠屏10处于折叠状态时的结构示意图。当折叠屏10处于折叠状态时，第三部分13处于折弯状态，第一部分(图中未示出)与第二部分(图中未示出)相对。折叠屏10对用户不可见，支撑装置20保护于折叠屏10外，以防止折叠屏10被硬物刮伤。
支撑装置20用于支撑折叠屏10，并允许折叠屏10在展开状态与折叠状态之间折叠。请参阅图4，图4为图1所示电子设备100中支撑装置20的立体图。在本实施例中，支撑装置20包括第一壳体21、第二壳体22和转动机构23。可以理解的是，图4仅示意性的示出了支撑装置20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。
第一壳体21用于固定并支撑图1中折叠屏10的第一部分11。具体的，第一壳体21具有贴合面M1，第一壳体21用于通过贴合面M1固定并支撑图1中折叠屏10的第一部分11。
第二壳体22用于固定并支撑图1中折叠屏10的第二部分12。具体的，第二壳体22具有贴合面M2，第二壳体22用于通过贴合面M2固定并支撑图1中折叠屏10的第二部分12。
第一壳体21的内部形成第一容纳腔(图中未示出)。第二壳体22的内部形成第二容纳腔(图中未示出)。第一容纳腔和第二容纳腔用于容纳电子设备100的主板、电池、摄像头模组、扬声器、听筒等电子器件。
第一壳体21可以为一个结构整体，也可以由多个部分装配形成。同理的，第二壳体22可以为一个结构件整体，也可以由多个部分装配形成。
在一些实施例中，请参阅图5，图5为图4所示支撑装置20的爆炸图。第一壳体21包括第一中框211和第一背盖212。贴合面M1位于第一中框211上。第一背盖212固定于第一中框211背离贴合面M1的一侧。第一容纳腔形成于第一中框211与第一背盖212之间。
第二壳体22包括第二中框221和第二背盖222。贴合面M2位于第二中框221上。第二背盖222固定于第二中框221背离贴合面M2的一侧。第二容纳腔形成于第二中框221与第二背盖222之间。
转动机构23用于支撑折叠屏10的第三部分13。转动机构23连接于第一壳体21与第二壳体22之间，第一壳体21与第二壳体22通过转动机构23实现可转动连接。在一些实施例中，转动机构23连接于第一壳体21的第一中框211与第二壳体22的第二中框221之间。在其他实施例中，转动机构23也可以连接于第一壳体21的第一背盖212与第二壳体22的第二背盖222之间。
转动机构23的数量可以为一个，也可以为两个或者两个以上。图4和图5仅给出了转动机构23的数量为两个的示例，这并不能认为是对本申请构成的特殊限制。该两个转动机构23沿折叠屏10的折叠轴的长度方向间隔设置。
请参阅图6，图6为本申请一些实施例提供的转动机构23的结构示意图。在本实施例中，转动机构23包括底座231、第一连接件232、第一支撑臂233、第二连接件234、第二支撑臂235、升降板236和升降结构237。
第一连接件232借助第一转轴23a可转动连接于底座231上。第一连接件232用于与第一壳体21连接。第一支撑臂233与第一连接件232相对固定。
第二连接件234借助第二转轴23b可转动连接于底座231上。第一转轴23a与第二转轴23b平行设置。第二连接件234用于与第二壳体22连接。第二支撑臂235与第二连接件234相对固定。
升降板236位于第一连接件232与第二连接件234之间，且升降板236支撑于第一支撑臂233与第二支撑臂235上。升降板236具有贴合面M3，转动机构23用于通过贴合面M3支撑折叠屏10的第三部分13。贴合面M3与第一壳体21的贴合面M1、第二壳体22的贴合面M2共面设置或近似共面设置，且朝向相同。此时，第一连接件 232和第二连接件234所处的位置为展开位置。第一连接件232和第二连接件234能够在该展开位置与折叠位置之间转动。当第一连接件232和第二连接件234位于折叠位置时，贴合面M1与贴合面M2相面对，贴合面M1与贴合面M3之间以及贴合面M2与贴合面M3之间垂直或者近似垂直。
为了方便下文各实施例的描述，建立XYZ坐标系，定义转动机构23内第一转轴23a的延伸方向为Y轴方向，升降板236的厚度方向为Z轴方向，与升降板236平行并与第一转轴23a垂直的方向为X轴方向。可以理解的是，转动机构23的坐标系可以根据实际需要灵活设置，本申请仅给出了一种示例，并不能认为是对本申请构成的特殊限制。
升降结构237位于升降板236背离贴合面M3的一侧，升降结构237与升降板236连接。升降结构237用于向升降板236施加远离贴合面M3的驱动力。当第一连接件232和第二连接件234由展开位置向折叠位置旋转时，第一支撑臂233和第二支撑臂235对升降板236的支撑力逐渐撤销，该驱动力可以带动升降板236向远离贴合面M3的方向下沉，以避让折叠屏10。当第一连接件232和第二连接件234由折叠位置向展开位置旋转时，第一支撑臂233和第二支撑臂235对升降板236施加向上的支撑力，该支撑力能够克服驱动力，以将升降板236的贴合面M3抬升至与贴合面M1、贴合面M2平齐。
升降结构237的结构形式有多种。在一些实施例中，请继续参阅图6，升降结构237为螺旋弹簧。螺旋弹簧的一端连接于升降板236上，另一端连接于底座231上。螺旋弹簧处于伸长变形状态，以向升降板236施加远离贴合面M3的弹性力。该弹性力形成上述驱动力。在另一些实施例中，升降结构237包括磁铁(图中未示出)和导磁片(图中未示出)。磁铁和导磁片中的一个固定于升降板235上，磁铁和导磁片中的另一个固定于底座231上。磁铁与导磁片之间具有磁吸作用，以向升降板236施加远离贴合面M3的磁吸力。该磁吸力形成上述驱动力。该两种升降结构237在Z轴方向上的占用高度均较大，导致支撑装置20以及电子设备100在第一连接件232和第二连接件234处于展开位置时的厚度较大，不利于电子设备100的轻薄化设计。
为了减小电子设备100在第一连接件232和第二连接件234处于展开位置时的厚度，请参阅图7，图7为本申请又一些实施例提供的转动机构23在第一连接件232和第二连接件234处于展开位置时的主视图。在本实施例中，转动机构23包括底座231、第一连接件232、第一支撑臂233、第二连接件234、第二支撑臂235、升降板236和升降结构237。
可以理解的是，图7仅示意性的示出了转动机构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7的限制。
第一连接件232借助第一转轴23a可转动连接于底座231上。
在一些实施例中，第一连接件232固定于第一转轴23a上。可选的，第一连接件232上设有固定孔(图中未示出)，第一连接件232通过该固定孔穿设于第一转轴23a上，并与第一转轴23a通过过盈配合、焊接、设置扁位等方式固定在一起。
请参阅图8和图9，图8为图7所示转动机构23(未示出第一连接件232和第二连接件234)的立体图，图9为图8所示转动机构23的爆炸图(未示出第一连接件232 和第二连接件234)。底座231上设有第一转动孔231a，第一转轴23a穿设于该第一转动孔231a内，并能够在该第一转动孔231a内转动。这样，当第一连接件232相对于底座231旋转时，第一转轴23a也随之转动。
在其他实施例中，第一连接件232上设有转动孔，第一连接件232通过该转动孔套设于第一转轴23a上，并能够绕第一转轴23a转动，第一转轴23a固定于底座231上。这样，当第一连接件232相对于底座231旋转时，第一转轴23a相对于底座231固定不动。
请返回参阅图7，第一连接件232用于与第一壳体21连接。具体的，第一连接件232可以与第一壳体21通过焊接、铆接、螺纹连接等方式固定在一起，也可以与第一壳体21可滑动或者可转动连接。第一连接件232可以与第一壳体21直接连接，也可以通过其他中间结构与第一壳体21间接连接。在图7所示的实施例中，第一连接件232通过螺纹连接、铆接、焊接等方式与第一壳体21直接固定连接。
同理的，第二连接件234借助第二转轴23b可转动连接于底座231上。第一转轴23a与第二转轴23b平行或者近似平行设置。
一些实施例中，第二连接件234固定于第二转轴23b上。可选的，第二连接件234上设有固定孔(图中未示出)，第二连接件234通过该固定孔穿设于第二转轴23b上，并与第二转轴23b通过过盈配合、焊接、设置扁位等方式固定在一起。
请参阅图9，底座231上设有第二转动孔231b，第二转轴23b穿设于该第二转动孔231b内，并能够在该第二转动孔231b内转动。这样，当第二转轴23b相对于底座231旋转时，第二转轴23b也随之转动。
在其他实施例中，第二连接件234上设有转动孔，第二连接件234通过该转动孔套设于第二转轴23b上并能够绕第二转轴23b转动，第二转轴23b固定于底座231上。这样，当第二连接件234相对于底座231旋转时，第二转轴23b相对于底座231固定不动。
请返回参阅图7，第二连接件234用于与第二壳体22连接。具体的，第二连接件234可以与第二壳体22通过焊接、铆接、螺纹连接等方式固定在一起，也可以与第二壳体22可滑动或者可转动连接。第二连接件234可以与第二壳体22直接连接，也可以通过其他中间结构与第二壳体22间接连接。在图7所示的实施例中，第二连接件234通过螺纹连接、铆接、焊接等方式与第二壳体22直接固定连接。
在本申请实施例中，第一转轴23a和第二转轴23b可以仅作为转轴使用，也可以用作驱动第一连接件232和第二连接件234同步运动的齿轮轴使用。在一些实施例中，请参阅图8和图9，第一转轴23a上固定有第一齿轮238。第一齿轮238的中轴线与第一转轴23a的中轴线共线。第二转轴23b上固定有第二齿轮239。第二齿轮239的中轴线与第二转轴23b的中轴线共线。第一齿轮238与第二齿轮239直径相等。第一齿轮238与第二齿轮239啮合传动。或者，第一齿轮238与第二齿轮239之间设有偶数个中间齿轮，第一齿轮238、该偶数个中间齿轮、第二齿轮239依次啮合传动。这样，通过第一齿轮238与第二齿轮239，或者通过第一齿轮238、偶数个中间齿轮与第二齿轮239可以驱动第一连接件232和第二连接件234沿相反方向同步转动。由此，能够驱动第一连接件232和第二连接件234同步运动。
在上述实施例中，中间齿轮的数量可以为2个、4个、6个等等，随着中间齿轮的数量的增多，中间齿轮的直径以及第一齿轮238的直径、第二齿轮239的直径可以设计得较小，以减小转动机构23在Z轴方向上的高度。但是，随着中间齿轮的数量的增多，转动机构23的结构复杂度也随之增加。因此，为了同时兼顾转动机构23的高度和结构复杂度，在一些实施例中，请参阅图10，图10本申请一些实施例提供的转动机构23中第一齿轮238、中间齿轮340和第二齿轮239的装配图，在本实施例中，中间齿轮340的数量为2个。
请返回参阅图7，升降板236位于第一连接件232与第二连接件234之间。升降板236具有贴合面M3，转动机构23用于通过贴合面M3支撑折叠屏10的第三部分13。贴合面M3与第一壳体21的贴合面M1、第二壳体22的贴合面M2共面设置且朝向相同。此时，第一连接件232和第二连接件234所处的位置为展开位置。第一连接件232和第二连接件234能够在该展开位置与折叠位置之间转动。如图15中的(b)所示，当第一连接件232和第二连接件234位于折叠位置时，贴合面M1与贴合面M2相面对，贴合面M1与贴合面M3之间以及贴合面M2与贴合面M3之间垂直或者近似垂直。
升降结构237与升降板236连接。具体的，在本实施例中，请参阅图7-图9，升降结构237包括第一扭簧2371和第二扭簧2372。
请参阅图9，第一扭簧2371包括第一螺旋本体2371a和第一扭臂2371b。
第一螺旋本体2371a套设于第一转轴23a上，第一转轴23a能够在第一螺旋本体2371a内转动。
在一些实施例中，第一螺旋本体2371a可以直接套设于第一转轴23a上。
在另一些实施例中，请参阅图11，图11为图9所示转动机构23中第一扭簧2371与底座231的装配图。在本实施例中，底座231上设有轴套231c。轴套231c套设于第一转轴23a上，且第一转轴23a能够在轴套231c内转动。第一螺旋本体2371a套设于轴套231c上。这样，第一螺旋本体2371a通过轴套231c间接套设于第一转轴23a上，轴套231c与第一转轴23a之间的接触面较大，能够避免在相对转动时因出现应力集中而导致卡死。
请参阅图8和图9，第一扭臂2371b位于升降板236远离贴合面M3的一侧。第一扭臂2371b的一端与第一螺旋本体2371a的一端固定，第一扭臂2371b的另一端沿第一方向(也即是X轴方向)可滑动连接于升降板236上。
为了实现第一扭臂2371b与升降板236的可滑动连接，在一些实施例中，请参阅图12，图12为图9所示转动机构23中第一扭簧2371的结构示意图。第一扭簧2371的第一扭臂2371b上设有挂接部A。
为了形成挂接部A，一些实施例中，请继续参阅图12，第一螺旋本体2371a包括第一螺旋部分2371a1和第二螺旋部分2371a2。第一螺旋部分2371a1和第二螺旋部分2371a2套设于图9中的第一转轴23a上。第一螺旋部分2371a1、第二螺旋部分2371a2沿Y轴方向间隔设置。第一螺旋部分2371a1靠近第二螺旋部分2371a2的一端为第一螺旋部分2371a1的第一端。第二螺旋部分2371a2靠近第一螺旋部分2371a1的一端为第二螺旋部分2371a2的第一端。第一扭臂2371b呈n型。第一扭臂2371b的两端分别 固定于第一螺旋部分2371a1的第一端与第二螺旋部分2371a2的第一端之间。第一扭臂2371b的中部弯折部分形成挂接部A。
请参阅图13，图13为图9所示转动机构23中升降板236的结构示意图。升降板236远离贴合面M3的表面设有挂钩2361，该挂钩2361具有沿X轴方向延伸的导向段2361a。
请参阅图14，图14为图12所示第一扭簧2371与图13所示升降板236的装配图。第一扭臂2371b通过挂接部A挂接于挂钩2361上并能够沿导向段2361a滑动。由此实现了第一扭臂2371b与升降板236的可滑动连接。此结构简单，容易实现。
在其他实施例中，第一扭臂2371b与升降板236的可滑动连接方式也可以为滑块与滑槽的配合滑动连接方式，在此不做具体限定。
在上述实施例的基础上，第一螺旋本体2371a的另一端固定于底座231上。一些实施例中，请参阅图9和图12，第一扭簧2371还包括第三扭臂2371c。第三扭臂2371c形成第一螺旋本体2371a的另一端。第一螺旋本体2371a通过该第三扭臂2371c固定于底座231上。具体的，第三扭臂2371c在底座231上的固定方式有多种。示例的，第三扭臂2371c可以通过焊接方式固定于底座231上。又示例的，请参阅图11，底座231上设有限位槽231d。该限位槽231d沿平行于第一转轴23a的方向延伸，第三扭臂2371c配合嵌设于限位槽231d内。由此可阻止第一螺旋本体2371a相对于底座231转动，实现第一螺旋本体2371a与底座231的固定。此固定方式无需复杂的焊接操作，可以提高转动机构23的装配效率。
在一些实施例中，请参阅图12，第一螺旋部分2371a1远离第二螺旋部分2371a2的一端为第一螺旋部分2371a1的第二端。第二螺旋部分2371a2远离第一螺旋部分2371a1的一端为第二螺旋部分2371a2的第二端。第三扭臂2371c的数量为两个，两个第三扭臂2371c分别固定于第一螺旋部分2371a1的第二端和所述第二螺旋部分2371a2的第二端。第一螺旋本体2371a通过该两个第三扭臂2371c固定于底座231上。这样，第一扭簧2371呈对称设计，且第一螺旋本体2371a可以通过两个第三扭臂2371c固定于底座231(请参阅图11)上，能够保证第一螺旋本体2371a在底座231上的固定稳定性。
同理的，请参阅图9，第二扭簧2372包括第二螺旋本体2372a和第二扭臂2372b。
第二螺旋本体2372a套设于第二转轴23b上，第二转轴23b能够相对于第二螺旋本体2372a转动。可以理解的是，第二螺旋本体2372a与第二转轴23b的具体套设方式，可以参照上述第一螺旋本体2371a与第一转轴23a的套设方式实施，在此不做赘述。
第二扭臂2372b位于升降板236远离贴合面M3的一侧。第二扭臂2372b的一端与第二螺旋本体2372a的一端固定，第二扭臂2372b的另一端沿X轴方向可滑动连接于升降板236上。第二扭臂2372b与升降板236的可滑动连接方式可以参照上述第一扭臂2371b与升降板236的可滑动连接方式实施例，在此不做赘述。第二螺旋本体2372a的另一端固定于底座231上。在一些实施例中，第二扭簧2372还包括第四扭臂3272c。第四扭臂3272c形成第二螺旋本体3272a的另一端。第二螺旋本体2372a通过第四扭臂3272c固定于底座231上。其中，第四扭臂3272c与底座231的具体固定方式，可 以参照上述第三扭臂2371c与底座231的固定方式实施，在此不做赘述。
第一支撑臂233和第二支撑臂235均位于升降板236远离贴合面M3的一侧。
第一支撑臂233的一端固定于第一转轴32a上。示例的，第一支撑臂233可以焊接固定于第一转轴32a上。又示例的，请参阅图9，第一转轴23a的侧面设有第一扁位23a1。其中，“扁位”是指侧面采用铣削加工等方式加工形成的平面部位，具有扁位的轴也称扁位轴。与扁位轴对应的，孔的内壁也可以设置扁位，该具有扁位的孔也称为扁位孔。扁位孔与扁位轴配合可以阻止孔和轴相对转动。第一扁位23a1的数量可以为一个，也可以为多个。一些实施例中，第一扁位23a1的数量为两个，两个第一扁位23a1分别设置于第一转轴23a沿自身径向上的两端。在其他实施例中，第一扁位23a1的数量也可以为一个。第一支撑臂233上设有扁位孔233a，第一支撑臂233通过该扁位孔233a配合穿设于第一转轴23a上。由此阻止第一支撑臂233绕第一转轴32a转动，实现第一支撑臂233与第一转轴23a的相对位置固定。采用此固定方式，第一支撑臂233与第一转轴23a的连接稳定性较优，且安装方便，能够降低转动机构23的装配难度，提高转动机构23的装配效率。
第一支撑臂233的另一端向靠近第二转轴23b的方向延伸。
同理的，第二支撑臂235的一端固定于第二转轴23b上。具体的，第二支撑臂235与第二转轴23b的具体固定方式可以参照上述第一支撑臂233与第一转轴23a的固定方式实施，在此不做赘述。第二支撑臂235的另一端向靠近第一转轴23a的方向延伸。
请参阅图15，图15为图7所示转动机构23在第一连接件232和第二连接件234由展开位置向折叠位置旋转时的结构示意图。
图15中的(a)为转动机构23在第一连接件232和第二连接件234处于展开位置时的结构示意图。在此位置时，升降板236支撑于第一支撑臂233和第二支撑臂235上。第一扭臂2371b和第二扭臂2372b处于向靠近贴合面M3的方向的摆动变形状态中。请参阅图15中的(a)，第一扭臂2371b和第二扭臂2372b的虚线所示位置为第一扭臂2371b和第二扭臂2372b在自由状态(也即是不受力的状态)下的位置。第一扭臂2371b和第二扭臂2372b的实线所示位置为：在第一连接件232和第二连接件234处于展开位置时，第一扭臂2371b和第二扭臂2372b所处的位置。该实线所示位置相比于虚线所示位置向靠近贴合面M3的方向摆动了一定角度θ。也即是，第一扭臂2371b和第二扭臂2372b处于向靠近贴合面M3的方向的摆动变形状态中。该摆动变形角度为θ。一些实施例中，θ大于0°，且小于或者等于85°。可选的，摆动变形角度θ为45°。这样，便于对升降板236的下沉高度的控制。
当第一连接件232和第二连接件234分别沿方向a1和方向a2向折叠位置旋转时，第一支撑臂233和第二支撑臂235分别沿方向d1和方向d2向远离贴合面M3的方向摆动。此时，升降板236失去支撑力，第一扭臂2371b和第二扭臂2372b在自身弹性力作用下分别沿方向b1和方向b2向远离贴合面M3的方向摆动。在摆动的同时，第一扭臂2371b和第二扭臂2372b分别相对于升降板236沿方向c1和方向c2滑动。由此可以带动升降板236沿方向d下沉运动。
当第一扭臂2371b和第二扭臂2372b摆动角度θ时，升降板236下沉至最低位置。之后，第一连接件232和第二连接件234继续旋转时，升降板236不会继续下沉。图 15中的(b)为转动机构23在第一连接件232和第二连接件234处于折叠位置时的结构示意图。在此位置，可以形成水滴状的折叠屏10，以增大折叠屏10的可靠性和使用寿命。
与上述过程相反的，当第一连接件232和第二连接件234由折叠位置向展开位置旋转时，第一连接件232和第二连接件234分别沿方向d1和方向d2的反方向摆动，在接触到升降板236之后的摆动过程中，可以顶起升降板236。同时，第一扭臂2371b和第二扭臂2372b向靠近贴合面M3的方向产生摆动变形。由此使得升降板236的贴合面M3与贴合面M1、贴合面M2平齐，从而使得支撑于其上的折叠屏10平整。
请参阅图16和图17，图16为本申请又一些实施例提供的转动机构23的立体图，图17为图16所示转动机构23的爆炸图。本实施例中未示出底座231。本实施例所示的转动机构23相比于图7-图9所示的转动机构23，区别点在于：转动机构23不包括第一支撑臂233和第二支撑臂235。第一螺旋本体2371a固定套设于第一转轴23a上，第二螺旋本体2372a固定套设于第二转轴23b上。第三扭臂2371c与第一连接件232固定连接，第四扭臂3272c与第二连接件234固定连接。在本实施例中，转动机构23也可以不包括该第三扭臂2371c和第四扭臂3272c。
在上述实施例中，第一螺旋本体2371a固定套设于第一转轴23a上，是指：第一螺旋本体2371a套设于第一转轴23a上，且第一螺旋本体2371a与第一转轴23a的相对位置固定，不能绕第一转轴23a转动。
在一些实施例中，第一螺旋本体2371a套设并通过焊点焊接的方式固定于第一转轴23a上。
在另一些实施例中，请参阅图18，图18为图17所示转动机构23中第一扭簧2371与第一转轴23a的装配图。在本实施例中，第一转轴23a上设有第二扁位23a2。第一螺旋本体2371a的内孔为扁位孔。第一螺旋本体2371a通过该内孔配合套设于第二扁位23a2所处的第一转轴部分上。这样，第一扭簧2371与第一转轴23a的连接稳定性较优，且安装方便，能够降低转动机构23的装配难度，提高转动机构23的装配效率。
同理的，第二螺旋本体2372a固定套设于第二转轴23b上，是指：第二螺旋本体2372a套设于第二转轴23b上，且第二螺旋本体2372a与第二转轴23b的相对位置固定，不能绕第二转轴23b转动。需要说明的是，第二螺旋本体2372a与第二转轴23b的具体固定方式，可以参照上述第一螺旋本体2371a与第一转轴23a的固定方式实施，在此不做赘述。
图16和图17所示的转动机构23相比于图7-图9所示的转动机构23，区别点还在于：请参阅图18，第一扭簧2371的数量和第二扭簧2372的数量均为两个。第一扭簧2371和第二扭簧2372的挂接部A均呈钩状。相应的，请参阅图19，图19为图17所示转动机构23中升降板236由下向上看时的结构示意图。升降板236上对应每个挂接部A的位置均设有挂钩2361。
请参阅图20，图20为图16所示转动机构23在第一连接件232和第二连接件234由展开位置向折叠位置旋转时的结构示意图。图20中的(a)为转动机构23在第一连接件232和第二连接件234处于展开位置时的结构示意图，当第一连接件232和第二连接件234分别沿方向a1和方向a2向折叠位置旋转时，可以带动第一扭臂2371b和 第二扭臂2372b分别沿方向b1和方向b2远离升降板236的贴合面M3的方向摆动，在摆动的同时，第一扭臂2371b和第二扭臂2372b分别相对于升降板236沿方向c1和方向c2滑动，从而可以带动升降板236沿方向d下沉运动。图20中的(b)为转动机构23在第一连接件232和第二连接件234转动45°时的结构示意图。图20中的(c)为转动机构23在第一连接件232和第二连接件234处于折叠位置时的结构示意图。在此位置，升降板236下沉至最低位置，从而形成水滴状的折叠屏10(未示出)，以增大折叠屏10的可靠性和使用寿命。
与上述过程相反的，当第一连接件232和第二连接件234由折叠位置向展开位置旋转时，可以带动第一扭臂2371b和第二扭臂2372b分别沿方向b1的反方向和方向b2的反方向靠近升降板236的贴合面M3的方向摆动，在摆动的同时，第一扭臂2371b和第二扭臂2372b分别相对于升降板236沿方向c1的反方向和方向c2的反方向滑动，从而可以带动升降板236沿方向d的反方向抬升运动，以使升降板236的贴合面M3与贴合面M1、贴合面M2平齐，从而使得支撑于其上的折叠屏10平整。
本申请实施例提供的转动机构23中，利用第一转轴23a和第二转轴23b的周围空间分别安装第一扭簧2371和第二扭簧2372，并通过第一扭簧2371和第二扭簧2372带动升降板236下沉和上升运动，能够降低升降结构237在Z轴方向上的占用高度，从而使得电子设备在展开状态时更轻薄。
由于本申请实施例提供的支撑装置20包括上述任一实施例所述的转动机构23，因此二者能够解决相同的技术问题，并达到相同的效果。
由于本申请实施例提供的电子设备100包括上述任一实施例所述的支撑装置20，因此二者能够解决相同的技术问题，并达到相同的效果。
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 (13)

  1. 一种转动机构(23)，其特征在于，包括底座(231)、第一连接件(232)、第二连接件(234)、升降板(236)、第一扭簧(2371)和第二扭簧(2372)；
    所述第一连接件(232)借助第一转轴(23a)可转动连接于所述底座(231)上；所述第二连接件(234)借助第二转轴(23b)可转动连接于所述底座(231)上；所述第二转轴(23b)与所述第一转轴(23a)平行；
    所述升降板(236)位于所述第一连接件(232)与所述第二连接件(234)之间；所述升降板(236)具有贴合面(M3)，所述贴合面(M3)用于贴合折叠屏(10)的一部分；所述第一扭簧(2371)包括第一螺旋本体(2371a)和第一扭臂(2371b)，所述第一螺旋本体(2371a)套设于所述第一转轴(23a)上，所述第一扭臂(2371b)位于所述升降板(236)远离所述贴合面(M3)的一侧，且所述第一扭臂(2371b)的一端与所述第一螺旋本体(2371a)的一端固定，所述第一扭臂(2371b)的另一端沿第一方向可滑动连接于所述升降板(236)上；所述第二扭簧(2372)包括第二螺旋本体(2372a)和第二扭臂(2372b)，所述第二螺旋本体(2372a)套设于所述第二转轴(23b)上，所述第二扭臂(2372b)位于所述升降板(236)远离所述贴合面(M3)的一侧，且所述第二扭臂(2372b)的一端与所述第二螺旋本体(2372a)的一端固定，所述第二扭臂(2372b)的另一端沿所述第一方向可滑动连接于所述升降板(236)上；所述第一方向与所述升降板(236)平行并与所述第一转轴(23a)垂直；
    所述第一连接件(232)和所述第二连接件(234)能够相对于所述底座(231)在展开位置与折叠位置之间转动，所述第一连接件(232)和所述第二连接件(234)在由所述展开位置向所述折叠位置转动时，可以带动所述第一扭臂(2371b)和所述第二扭臂(2372b)远离所述升降板(236)的贴合面(M3)摆动，以带动所述升降板(236)下沉，所述第一连接件(232)和所述第二连接件(234)在由所述折叠位置向所述展开位置转动时，可以带动所述第一扭臂(2371b)和所述第二扭臂(2372b)靠近所述升降板(236)的贴合面(M3)摆动，以带动所述升降板(236)上升。
  2. 根据权利要求1所述的转动机构(23)，其特征在于，所述第一连接件(232)固定于所述第一转轴(23a)上，所述底座(231)上设有第一转动孔(231a)，所述第一转轴(23a)穿设于所述第一转动孔(231a)内，并能够在所述第一转动孔(231a)内转动；
    所述第二连接件(234)固定于所述第二转轴(23b)上，所述底座(231)上设有第二转动孔(231b)，所述第二转轴(23b)穿设于所述第二转动孔(231b)内并能够在所述第二转动孔(231b)内转动。
  3. 根据权利要求2所述的转动机构(23)，其特征在于，所述第一转轴(23a)上固定有第一齿轮(238)，所述第一齿轮(238)的中轴线与所述第一转轴(23a)的中轴线共线；
    所述第二转轴(23b)上固定有第二齿轮(239)，所述第二齿轮(239)的中轴线与所述第二转轴(23b)的中轴线共线；
    所述第一齿轮(238)与所述第二齿轮(239)直径相等，所述第一齿轮(238)与所述第二齿轮(239)啮合传动，或者，所述第一齿轮(238)与所述第二齿轮(239) 之间设有偶数个中间齿轮(240)，所述第一齿轮(238)、所述偶数个中间齿轮(240)、所述第二齿轮(239)依次啮合传动。
  4. 根据权利要求2或3所述的转动机构(23)，其特征在于，所述第一螺旋本体(2371a)套设于所述第一转轴(23a)上，所述第一转轴(23a)能够在所述第一螺旋本体(2371a)内转动，所述第一螺旋本体(2371a)的另一端固定于所述底座(231)上；
    所述第二螺旋本体(2372a)套设于所述第二转轴(23b)上，所述第二转轴(23b)能够在所述第二螺旋本体(2372a)内转动，所述第二螺旋本体(2372a)的另一端固定于所述底座(231)上；
    所述转动机构(23)还包括第一支撑臂(233)和第二支撑臂(235)；所述第一支撑臂(233)和所述第二支撑臂(235)均位于所述升降板(236)远离所述贴合面(M3)的一侧，所述第一支撑臂(233)的一端固定于所述第一转轴(23a)上，所述第一支撑臂(233)的另一端向靠近所述第二转轴(23b)的方向延伸，所述第二支撑臂(235)的一端固定于所述第二转轴(23b)上，所述第二支撑臂(235)的另一端向靠近所述第一转轴(23a)的方向延伸；
    当所述第一连接件(232)和所述第二连接件(234)处于所述展开位置时，所述升降板(236)支撑于所述第一支撑臂(233)和所述第二支撑臂(235)上，所述第一扭臂(2371b)和所述第二扭臂(2372b)处于向靠近所述贴合面(M3)的方向的摆动变形状态中。
  5. 根据权利要求4所述的转动机构(23)，其特征在于，当所述第一连接件(232)和所述第二连接件(234)处于所述展开位置时，所述第三扭臂(2371c)和所述第四扭臂(2372c)向靠近所述贴合面(M3)的方向的摆动变形角度大于0°，且小于等于85°。
  6. 根据权利要求4或5所述的转动机构(23)，其特征在于，所述第一转轴(23a)的侧面设有第一扁位(23a1)，所述第一支撑臂(233)的一端设有扁位孔(233a)，所述第一支撑臂(233)通过所述扁位孔(233a)配合套设于所述第一转轴(23a)上。
  7. 根据权利要求4-6任一项所述的转动机构(23)，其特征在于，所述第一扭臂(2371b)上设有挂接部(A)；
    所述升降板(236)远离所述贴合面(M3)的表面设有挂钩(2361)，所述挂钩(2361)具有沿第一方向延伸的导向段(2361a)；
    所述第一扭臂(2371b)通过所述挂接部(A)挂接于所述挂钩(2361)上并能够沿所述导向段(2361a)滑动。
  8. 根据权利要求7所述的转动机构(23)，其特征在于，所述第一螺旋本体(2371a)包括第一螺旋部分(2371a1)和第二螺旋部分(2371a2)，所述第一螺旋部分(2371a1)和所述第二螺旋部分(2371a2)套设于所述第一转轴(23a)上，所述第一螺旋部分(2371a1)、所述第二螺旋部分(2371a2)沿所述第一转轴(23a)的长度方向间隔设置；
    所述第一螺旋部分(2371a1)靠近所述第二螺旋部分(2371a2)的一端为所述第一螺旋部分(2371a1)的第一端；所述第二螺旋部分(2371a2)靠近所述第一螺旋部 分(2371a1)的一端为所述第二螺旋部分(2371a2)的第一端；
    所述第一扭臂(2371b)呈n型，所述第一扭臂(2371b)的两端分别固定于所述第一螺旋部分(2371a1)的第一端与所述第二螺旋部分(2371a2)的第一端之间，所述第一扭臂(2371b)的中部弯折部分形成所述挂接部(A)。
  9. 根据权利要求8所述的转动机构(23)，其特征在于，所述第一螺旋部分(2371a1)远离所述第二螺旋部分(2371a2)的一端为所述第一螺旋部分(2371a1)的第二端；所述第二螺旋部分(2371a2)远离所述第一螺旋部分(2371a1)的一端为所述第二螺旋部分(2371a2)的第二端；
    所述第一螺旋本体(2371a)通过所述第一螺旋部分(2371a1)的第二端和所述第二螺旋部分(2371a2)的第二端固定于所述底座(231)上。
  10. 根据权利要求2或3所述的转动机构(23)，其特征在于，所述第一螺旋本体(2371a)固定套设于所述第一转轴(23a)上，所述第一扭臂(2371b)位于所述第一转轴(23a)靠近所述第二转轴(23b)的一侧，所述第二螺旋本体(2372a)固定套设于所述第二转轴(23b)上，所述第二扭臂(2372b)位于所述第二转轴(23b)靠近所述第一转轴(23a)的一侧。
  11. 根据权利要求10所述的转动机构(23)，其特征在于，所述第一转轴(23a)上设有第二扁位(23a2)，所述第一螺旋本体(2371a)的内孔为扁位孔，所述第一螺旋本体(2371a)通过所述内孔配合套设于所述第一转轴(23a)上。
  12. 一种支撑装置(20)，其特征在于，包括第一壳体(21)、第二壳体(22)和权利要求1-11任一项所述的转动机构(23)，所述转动机构(23)位于所述第一壳体(21)与所述第二壳体(22)之间，且所述转动机构(23)的第一连接件(232)与所述第一壳体(21)连接，所述转动机构(23)的第二连接件(234)与所述第二壳体(22)连接。
  13. 一种电子设备(100)，其特征在于，包括折叠屏(10)和权利要求12所述的支撑装置；
    所述折叠屏(10)包括第一部分(11)、第二部分(12)和第三部分(13)，所述第三部分(13)位于所述第一部分(11)与所述第二部分(12)之间，且所述第一部分(11)支撑并固定于所述第一壳体(21)上，所述第二部分(12)支撑并固定于所述第二壳体(22)上，所述第三部分(13)支撑于所述支撑装置(20)的转动机构(23)上。
PCT/CN2022/071900 2021-05-27 2022-01-13 一种转动机构、支撑装置和电子设备 WO2022247310A1 (zh)

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