WO2021121104A1 - 折叠装置及电子设备 - Google Patents

折叠装置及电子设备 Download PDF

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Publication number
WO2021121104A1
WO2021121104A1 PCT/CN2020/134997 CN2020134997W WO2021121104A1 WO 2021121104 A1 WO2021121104 A1 WO 2021121104A1 CN 2020134997 W CN2020134997 W CN 2020134997W WO 2021121104 A1 WO2021121104 A1 WO 2021121104A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating shaft
rotating
folding device
bevel gear
base
Prior art date
Application number
PCT/CN2020/134997
Other languages
English (en)
French (fr)
Inventor
贾玉虎
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP20903594.8A priority Critical patent/EP4072109B1/en
Publication of WO2021121104A1 publication Critical patent/WO2021121104A1/zh
Priority to US17/843,126 priority patent/US20220316559A1/en

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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
    • H04M1/0249—Details of the mechanical connection between the housing parts or relating to the method of assembly
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
    • 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
    • G06F1/1615—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
    • G06F1/1675—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
    • 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 application relates to the field of communication equipment, in particular to a folding device and electronic equipment.
  • a synchronous transmission gear set is used to drive the main body parts on both sides to turn over each other, thereby driving the two opposite parts of the flexible display screen to be overlapped or unfolded.
  • the gear torque tolerances of the multiple gears are relatively large, which will cause the gears to rotate lagging, thereby affecting the synchronous rotation effect of the main parts on both sides of the foldable mobile phone.
  • An embodiment of the present application provides a folding device, wherein the folding device includes a rotating shaft base, two main bodies arranged on opposite sides of the rotating shaft base, and a synchronous transmission assembly connected to the two main bodies; each;
  • the main body is provided with a rotating member rotatably connected to the base of the rotating shaft and a casing fixedly connected to the rotating member.
  • the two rotating members respectively drive the two casings to expand or close each other; each of the rotations
  • a first bevel gear is provided at one end of the rotating member that is rotatably connected to the rotating shaft base; the rotating shaft of the first bevel gear is coaxially arranged with the rotating shaft of the rotating member that is rotatably connected to the rotating shaft base;
  • a compound gear rotatably connected to the shaft base, each compound gear is provided with a second bevel gear and a spur gear that rotates coaxially with the second bevel gear, and the two second bevel gears are respectively connected with The two first bevel gears mesh with each other, and the two spur gears mesh with each other.
  • An embodiment of the present application provides an electronic device, wherein the electronic device includes the above-mentioned folding device, the electronic device further includes a flexible display screen, and the flexible display screen includes two parts that can be relatively overlapped or unfolded, so The two parts are respectively fixed to the two casings, and can be superimposed or unfolded as the two casings rotate with each other.
  • the rotating member is provided with a first bevel gear
  • the synchronous transmission assembly includes a compound gear
  • each of the compound gears is provided with a second bevel gear and is connected to the first bevel gear.
  • Two bevel gears are coaxially rotating spur gears
  • the two second bevel gears respectively mesh with the two first bevel gears
  • the two spur gears mesh with each other, so that the rotating part is driven by the synchronous transmission
  • the component drives the rotating part on the other side to rotate synchronously, so that the two main bodies can rotate synchronously around the rotating shaft base.
  • FIG. 1 is a schematic cross-sectional view of an electronic device provided by an embodiment of the present application in an unfolded state
  • FIG. 2 is a schematic diagram of a folded state cross-section of an electronic device provided by an embodiment of the present application
  • FIG. 3 is a partial three-dimensional schematic diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 4 is a partial three-dimensional exploded schematic diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 5 is a partial three-dimensional exploded schematic diagram of an electronic device provided by another embodiment of the present application.
  • the present application provides an electronic device 1000 that includes a folding device 100 and a flexible display screen 200.
  • the flexible display screen 200 includes a first part 210, a second part 220 that is overlapped or unfolded relative to the first part 210, and a bendable part 230 connected between the first part 210 and the second part 220 .
  • the folding device 100 includes a rotating shaft base 110, two main bodies 120 disposed on opposite sides of the rotating shaft base 110, and a synchronous transmission assembly 130 connected to the two main bodies 120.
  • Each of the main bodies 120 is provided with a rotating member 121 rotatably connected to the shaft base 110 and a casing 122 fixedly connected to the rotating member 121, and the two rotating members 121 respectively drive the two casings 122 to each other. Expand or close.
  • the two casings 122 are fixedly connected to the first part 210 and the second part 220 respectively.
  • a first bevel gear 123 is provided at one end of each rotating member 121 rotatably connected to the rotating shaft base 110.
  • the rotation axis of the first bevel gear 123 and the rotation axis of the rotating member 121 rotatably connected to the rotation axis base 110 are arranged coaxially.
  • the synchronous transmission assembly 130 includes two compound gears 131 rotatably connected to the shaft base 110, and each compound gear 131 is provided with a second bevel gear 132 and a second bevel gear 132 that rotates coaxially with the second bevel gear 132.
  • the spur gears 133, the two second bevel gears 132 respectively mesh with the two first bevel gears 123, and the two spur gears 133 mesh with each other.
  • the two main bodies 120 can respectively carry the first part 210 and the second part 220, and the two main bodies 120 rotate relative to the shaft base 110 to drive the first part 210 and the second part 220.
  • the second part 220 rotates relative to the rotating shaft base 110 to realize the overlapping or unfolding of the first part 210 and the second part 220, so that the electronic device 1000 can be used in two states of folding or unfolding.
  • the electronic device 1000 may be a device such as a mobile phone, a tablet computer, or a notebook computer.
  • the rotating member 121 is provided with a first bevel gear 123
  • the synchronous transmission assembly 130 includes a compound gear 131
  • each of the compound gears 131 is provided with a second bevel gear 132 and is coaxial with the second bevel gear 132
  • Rotating spur gears 133 the two second bevel gears 132 are respectively meshed with the two first bevel gears 123
  • the two spur gears 133 are meshed with each other, so that the rotating member 121 is driven by the synchronous transmission
  • the assembly 130 drives the rotating member 121 on the other side to rotate synchronously, so that the two main bodies 120 can rotate synchronously around the rotating shaft base 110.
  • the casing 122 has a first edge 1221 and a second edge 1222 opposite to the first edge 1221.
  • the first edges 1221 of the two casings 122 can be fixedly connected to the end of the first part 210 and the end of the second part 220 respectively.
  • the second edge 1222 is adjacent to the shaft base 110.
  • the rotating member 121 is fixed to the second edge 1222 and partially protrudes relative to the second edge 1222.
  • the protruding part of the rotating member 121 relative to the second edge 1222 extends into the rotating shaft base 110 and is rotatably connected with the rotating shaft in the rotating shaft base 110.
  • the casing 122 may arrange a plurality of the rotating members 121 on the second edge 1222, and the plurality of the rotating members 121 are equally spaced along the length direction of the second edge 1222.
  • the main body 120 may further include a cover plate 124 covering the casing 122.
  • a receiving cavity 125 is formed between the casing 122 and the cover plate 124, and a part of the rotating member 121 is received in the receiving cavity 125.
  • Functional devices can also be accommodated in the accommodating cavity 125.
  • the functional device can be a battery, circuit board, connector, memory, processor, camera, fingerprint module, speaker, earpiece, etc.
  • cover plate 124 facing away from the casing 122 is flat, so that the cover plates 124 of the two main bodies 120 can respectively support the first part 210 and the second part 220.
  • the cover plates 124 of the two main bodies 120 may also be slidably connected to the first part 210 and the second part 220 to compensate for the change in the length of the flexible display screen 200.
  • the rotating shaft base 110 has two sides that are respectively connected to the two main bodies 120 in rotation.
  • the rotating shaft base 110 roughly forms the rotating shaft structure of the two main bodies 120 so that the two main bodies 120 can be turned over via the rotating shaft base 110.
  • the rotating shaft base 110 has a rectangular rod shape.
  • the length direction of the rotating shaft base 110 is parallel to the rotating axis of the rotating member 121.
  • the rotating shaft base 110 is provided with a rotating shaft cavity 111, and the synchronous transmission assembly 130 is partially disposed in the rotating shaft cavity 111 to reduce the volume of the rotating shaft base 110.
  • the part of the rotating member 121 away from the casing 122 can rotate into the rotating shaft cavity 111.
  • the bendable part 230 is located outside the shaft cavity 111, and the two rotating parts 121 are located in the The shaft cavity 111 outside.
  • the end of the rotating member 121 away from the casing 122 rotates into the shaft cavity 111.
  • the rotating member 121 is provided with a rotating link 126, one end of the rotating link 126 is fixedly connected to the casing 122, and the other end is rotatably connected to the first rotating shaft, the first bevel gear 123 is arranged at one end of the rotating connecting rod 126 that is rotatably connected to the first rotating shaft.
  • the rotating link 126 extends perpendicular to the second edge 1222 to facilitate the rotation of the rotating link 126 around the rotating shaft base 110. That is, the rotating link 126 includes a first end 1261 fixedly connected to the casing 122 and a second end 1262 opposite to the first end 1261. The second end 1262 is rotatably connected to the shaft base 110.
  • the first bevel gear 123 is disposed at the second end 1262.
  • the second end 1262 is provided with a side surface 1263 that is substantially perpendicular to the cover plate 124.
  • the first bevel gear 123 is disposed on the side surface 1263.
  • the second end 1262 is also provided with a top surface 1264 that is substantially parallel to the cover plate 124 and connected to the side surface 1263, and the second end 1262 is also provided with a top surface 1264 opposite to the top surface 1264 and connected to the side surface 1263. ⁇ 1265 ⁇ The bottom 1265.
  • the first bevel gear 123 has a cross-section 1231 that is flush with the top surface 1264, so that the volume of the first bevel gear 123 is reduced, and the overall volume of the shaft base 110 is reduced.
  • the compound gear 131 is completely contained in the shaft cavity 111.
  • the first bevel gear 123 partly protrudes relative to the bottom surface 1265, so that when the bottom surface 1265 of the rotating member 121 is approximately flush with the opening of the shaft cavity 111, a part of the first bevel gear 123 can also extend It enters into the rotating shaft cavity 111 and maintains a meshing state with the compound gear 131.
  • the first bevel gear 123 may also be detachably connected to the rotating member 121, which facilitates the disassembly and maintenance of the first bevel gear 123.
  • the compound gear 131 is rotatably connected to the bottom of the shaft cavity 111.
  • the rotation axis of the compound gear 131 is perpendicular to the rotation axis of the first bevel gear 123. That is, the rotation axis of the second bevel gear 132 is perpendicular to the rotation axis of the first bevel gear 123.
  • the rotation plane of the second bevel gear 132 is perpendicular to the rotation plane of the first bevel gear 123.
  • the distance between the gear 123 and the bottom of the shaft cavity 111 can eliminate the center distance tolerance of the first bevel gear 123 and the second bevel gear 132, thereby avoiding the first bevel gear 123 and the second bevel gear
  • the idling rotation of 132 can ensure the effectiveness of the synchronous rotation of the two main bodies 120.
  • the casing 122 drives the rotating element 121 to rotate around the shaft base 110, and drives the first part 210 of the flexible display screen 200 to turn around the shaft base 110, and the rotating element 121 drives
  • the first bevel gear 123 rotates
  • the first bevel gear 123 drives the second bevel gear 132 to rotate
  • the second bevel gear 132 drives the spur gear 133 to rotate
  • the spur gear 133 drives the other side
  • the spur gear 133 rotates, the spur gear 133 on the other side drives the second bevel gear 132 on the other side to rotate, and the second bevel gear 132 on the other side drives the first bevel gear on the other side.
  • the bevel gear 123 rotates, the first bevel gear 123 on the other side drives the rotating member 121 on the other side to rotate, and the rotating member 121 on the other side drives the casing 122 and the first
  • the two parts 220 rotate around the shaft base 110 so that the first part 210 and the second part 220 rotate and overlap around the shaft base 110 synchronously.
  • the rotating shaft base 110 is provided with a base 112 and a rotating shaft support 113 fixed to the base 112, and the rotating shaft support 113 is provided with a first rotating shaft 114 that is rotatably connected to the rotating member 121
  • the rotating shaft base 110 is provided with a second rotating shaft 115 rotatably connected to the compound gear 131, and the first rotating shaft 114 is perpendicular to the second rotating shaft 115.
  • the shaft cavity 111 is opened on the base 112.
  • the bottom of the shaft support 113 is fixed in the shaft cavity 111.
  • the first rotating shaft 114 is located in a part of the rotating shaft bracket 113 where the rotating shaft cavity 111 is exposed.
  • the rotating shaft support 113 is provided with two first rotating shafts 114.
  • the rotating members 121 of the main body 120 on both sides are respectively connected to the two first rotating shafts 114 in rotation.
  • An end of the rotating member 121 away from the casing 122 is sleeved on the first rotating shaft 114.
  • the first bevel gear 123 is sleeved on the first rotating shaft 114.
  • the rotating torque of the casing 122 rotating around the rotating shaft base 110 is transmitted to the first bevel gear 123 via the rotating member 121, so that the first bevel gear 123 uses the first rotating shaft 114 as a rotation
  • the shaft rotates.
  • the second rotating shaft 115 extends from the bottom of the rotating shaft cavity 111 toward the opening of the rotating shaft cavity 111.
  • the compound gear 131 is sleeved on the second rotating shaft 115.
  • the distance between the two second rotating shafts 115 is approximately equal to the sum of the pitch diameters of the two spur gears 133.
  • the first rotation shaft 114 and the second rotation shaft 115 are perpendicular to each other to avoid a center distance tolerance between the first bevel gear 123 and the second bevel gear 132.
  • the height of the synchronous transmission assembly 130 is approximately equal to the thickness of the composite gear 131, that is, the height of the synchronous transmission assembly 130 can be effectively reduced , The volume of the shaft base 110 can be effectively reduced.
  • one end of the rotating link 126 that is rotatably connected to the first rotating shaft 114 is provided with a conical boss extending parallel to the first rotating shaft 114, and the peripheral side wall of the conical boss is provided with multiple One first serration 1232, the plurality of first serrations 1232 and the conical boss form the first bevel gear 123.
  • the tapered boss is disposed on the side surface 1263 of the second end 1262 away from the shaft support 113.
  • the tapered boss is provided with a first inclined side wall.
  • the plurality of first saw teeth 1232 are equally spaced on the first inclined side wall.
  • the plurality of first saw teeth 1232 form the saw teeth of the first bevel gear 123.
  • the arrangement arc of the plurality of first serrations 1232 on the first inclined side wall is greater than 90°, so that the rotating member 121 can rotate at least 90° around the shaft base 110, and two The main body 120 can rotate synchronously.
  • the first bevel gear 123 is formed on the side surface 1263 of the rotating link 126, so that the first bevel gear 123 and the rotating link 126 are integrally arranged, eliminating the first bevel gear 123 and the The assembly tolerance of the rotating connecting rod 126 and preventing the first bevel gear 123 from rotating behind the rotating connecting rod 126.
  • the compound gear 131 includes a shaft sleeve 1311, a first sector piece 1312 fixed on the peripheral side of the shaft sleeve 1311, and a second sector piece 1313 fixed on the circumference side of the shaft sleeve 1311.
  • the shaft sleeve 1311 Rotatingly connected to the second rotating shaft 115, the peripheral edge of the first fan-shaped piece 1312 away from the sleeve 1311 is provided with a second inclined side wall and a plurality of second saw teeth 1314 arranged on the second inclined side wall ,
  • the first segment 1312 and the plurality of second serrations 1314 form the second bevel gear 132
  • the second segment 1313 is provided with a straight wall and arranged on the periphery away from the sleeve 1311.
  • the plurality of third serrations 1315 of the straight wall, the second segment 1313 and the third serrations 1315 form the spur gear 133.
  • the shaft sleeve 1311 is sleeved on the second rotating shaft 115.
  • the first sector piece 1312 and the second sector piece 1313 both extend along the direction perpendicular to the second rotation axis 115, and the first sector piece 1312 and the second sector piece 1313 are perpendicular to the second rotation axis.
  • the axis 115 is arranged side by side.
  • the arc of the second inclined side wall is approximately 90°.
  • the arc of the straight wall is approximately 90°.
  • the rotating member 121 rotates 90° around the shaft base 110, the second bevel gear 132 can rotate 90° relative to the base 112, and the spur gear 133 can rotate 90° relative to the base 112.
  • the first segment 1312, the second segment 1313 and the sleeve 1311 are integrally arranged, so that the second bevel gear 132 and the spur gear 133 rotate synchronously with respect to the base 112.
  • the base 112 is provided with a bottom plate 1121 and two side plates 1122 fixed on both sides of the bottom plate 1121.
  • the two side plates 1122 are respectively adjacent to the casing 122, and the shaft bracket 113 is fixed to Between the two side plates 1122 and the bottom plate 1121, the second rotating shaft 115 is disposed on the bottom plate 1121.
  • the rotating shaft cavity 111 is disposed between the two side plates 1122 and the bottom plate 1121.
  • the bottom of the shaft bracket 113 is fixed on the bottom plate 1121.
  • the rotating shaft support 113 includes a bearing bottom plate 1131 and a bearing vertical plate 1132 fixed to the bearing bottom plate 1131.
  • the first rotating shaft 114 is disposed on the bearing riser 1132 and extends perpendicular to the bearing riser 1132.
  • the bearing bottom plate 1131 is attached to the bottom plate 1121.
  • the second rotating shaft 115 extends perpendicular to the bottom plate 1121.
  • the composite gear 131 and the bearing bottom plate 1131 are arranged on the bottom plate 1121 at intervals.
  • the bearing vertical plate 1132 and the side plate 1122 are spaced apart to ensure the parallelism between the plane connecting the two first rotating shafts 114 and the bottom plate 1121, that is, to ensure that the two first rotating shafts are parallel to each other.
  • 114 is the same distance from the bottom plate 1121, so as to ensure the synchronous transmission efficiency of the synchronous transmission assembly 130.
  • the side plate 1122 and the bottom plate 1121 can protect the synchronous transmission assembly 130 and the shaft bracket 113.
  • the first rotating shaft 114 is located at a position where the bearing riser 1132 is substantially flush with the opening end of the rotating shaft cavity 111, so that the edge of the side plate 1122 away from the bottom plate 1121 can face the The rotating member 121 performs a rotation limit.
  • the two rotating links 126 are approximately flush and drive the two casings 122 Expand each other so that the first part 210 and the second part 220 are flattened, the side plate 1122 restricts the rotating member 121 from continuing to rotate toward the bottom plate 1121, that is, restricts the two casings 122 from continuing to rotate, Thus, the flexible display screen 200 can be prevented from being broken.
  • the rotating shaft cavity 111 can receive an end of the rotating connecting rod 126 away from the casing 122.
  • the two casings 122 are superimposed on each other, and the second ends 1262 of the two rotating links 126 are both received in the shaft cavity 111 and are close to the shaft cavity 111.
  • the bottom plate 1121 further ensures that the shaft cavity 111 can accommodate a part of the bendable portion.
  • the base 112 further includes a slider 1124 slidably connected to the bottom plate 1121 and an elastic member 1125 elastically compressed between the slider 1124 and the bottom plate 1121.
  • the sliding direction of the slider 1124 is parallel to the length direction of the shaft base 110.
  • the elastic member 1125 is used to provide an elastic restoring force for the sliding block 1124 to slide toward the shaft support 113.
  • the second rotating shaft 115 is disposed on the sliding block 1124.
  • the second rotating shaft 115 extends perpendicularly to the bottom plate 1121.
  • the sliding block 1124 can drive the second bevel gear 132 of the compound gear 131 to move closer to the rotating shaft support 113, that is, to make the second bevel gear 132 resist in a direction parallel to and parallel to the first rotating shaft 114
  • the first bevel gear 123 increases the tightness of the fit between the first bevel gear 123 and the second bevel gear 132, and reduces the fit gap between the first bevel gear 123 and the second bevel gear 132, Improve the synchronous rotation efficiency of the first bevel gear 123 and the second bevel gear 132.
  • the rotating member 121 is provided with a first bevel gear 123
  • the synchronous transmission assembly 130 includes a compound gear 131
  • each of the compound gears 131 is provided with a second bevel gear 123.
  • a bevel gear 132 and a spur gear 133 that rotates coaxially with the second bevel gear 132, the two second bevel gears 132 mesh with the two first bevel gears 123, and the two spur gears 133
  • Mutual meshing enables the rotating member 121 to drive the other side of the rotating member 121 to rotate synchronously via the synchronous transmission assembly 130, so that the two main bodies 120 can rotate synchronously around the rotating shaft base 110.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Mechanical Engineering (AREA)
  • Telephone Set Structure (AREA)

Abstract

本申请公开了一种折叠装置及电子设备，所述折叠装置包括转轴基座、设置于所述转轴基座相对两侧的两个主体和连接于两个所述主体的同步传动组件；每一所述主体设有转动连接所述转轴基座的转动件和固定连接所述转动件的机壳；每一所述转动件的一端设有第一锥齿轮；所述同步传动组件包括两个转动连接于所述转轴基座的复合齿轮，每一所述复合齿轮设有第二锥齿轮和与所述第二锥齿轮同轴转动的直齿轮，两个所述第二锥齿轮分别与两个所述第一锥齿轮相啮合，两个所述直齿轮相互啮合。所述转动件经所述同步传动组件带动另一侧的转动件同步转动，进而两个所述主体可绕所述转轴基座同步转动。

Description

折叠装置及电子设备 技术领域
申请涉及通讯设备领域，尤其涉及一种折叠装置及电子设备。
背景技术
目前可折叠手机中，存在利用同步传动齿轮组带动两侧的主体部分相互翻转，进而带动柔性显示屏相对的两部分可相互叠合或展开。然而，由于同步传动齿轮组的多个齿轮处于同一转动平面上，多个齿轮的齿轮矩公差较大，会导致齿轮存在转动滞后的现象，从而影响可折叠手机两侧的主体部分同步转动效果。
发明内容
本申请实施例提供一种折叠装置，其中，所述折叠装置包括转轴基座、设置于所述转轴基座相对两侧的两个主体和连接于两个所述主体的同步传动组件；每一所述主体设有转动连接所述转轴基座的转动件和固定连接所述转动件的机壳，两个所述转动件分别带动两个所述机壳相互展开或闭合；每一所述转动件转动连接所述转轴基座的一端设有第一锥齿轮；第一锥齿轮的转动轴与所述转动件转动连接所述转轴基座的转动轴同轴设置；所述同步传动组件包括两个转动连接于所述转轴基座的复合齿轮，每一所述复合齿轮设有第二锥齿轮和与所述第二锥齿轮同轴转动的直齿轮，两个所述第二锥齿轮分别与两个所述第一锥齿轮相啮合，两个所述直齿轮相互啮合。
本申请实施例提供一种电子设备，其中，所述电子设备包括上述的折叠装置，所述电子设备还包括柔性显示屏，所述柔性显示屏包括两个可相对叠合或展开的部分，所述两部分分别固定于所述两个机壳，可随所述两个机壳相互转动而叠合或展开。
本申请实施例提供的折叠装置及电子设备，通过所述转动件设有第一锥齿轮，所述同步传动组件包括复合齿轮，每一所述复合齿轮设有第二锥齿轮和与所述第二锥齿轮同轴转动的直齿轮，两个所述第二锥齿轮分别与两个所述第一锥齿轮相啮合，两个所述直齿轮相互啮合，使得所述转动件经所述同步传动组件带动另一侧的转动件同步转动，进而两个所述主体可绕所述转轴 基座同步转动。
附图说明
为了更清楚地说明申请的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的电子设备的展开状态截面示意图；
图2是本申请实施例提供的电子设备的折叠状态截面的示意图；
图3是本申请实施例提供的电子设备的局部立体示意图；
图4是本申请实施例提供的电子设备的局部立体分解示意图；
图5是本申请另一实施例提供的电子设备的局部立体分解示意图。
具体实施方式
下面将结合申请实施方式中的附图，对申请实施方式中的技术方案进行清楚、完整地描述。
请参阅图1、图2和图3，本申请提供一种电子设备1000，所述电子设备1000包括折叠装置100和柔性显示屏200。所述柔性显示屏200包括第一部分210和相对所述第一部分210叠合或展开的第二部分220，以及连接于所述第一部分210和所述第二部分220之间的可弯折部分230。所述折叠装置100包括转轴基座110、设置于所述转轴基座110相对两侧的两个主体120和连接于两个所述主体120的同步传动组件130。每一所述主体120设有转动连接所述转轴基座110的转动件121和固定连接所述转动件121的机壳122，两个所述转动件121分别带动两个所述机壳122相互展开或闭合。两个所述机壳122分别固定连接所述第一部分210和第二部分220。每一所述转动件121转动连接所述转轴基座110的一端设有第一锥齿轮123。第一锥齿轮123的转动轴与所述转动件121转动连接所述转轴基座110的转动轴同轴设置。所述同步传动组件130包括两个转动连接于所述转轴基座110的复合齿轮131，每一所述复合齿轮131设有第二锥齿轮132和与所述第二锥齿轮132同轴转动的直齿轮133，两个所述第二锥齿轮132分别与两个所述第一锥齿轮123相啮合，两 个所述直齿轮133相互啮合。
可以理解的是，所述两个主体120分别可承载所述第一部分210和所述第二部分220，两个所述主体120相对所述转轴基座110转动，实现带动所述第一部分210和所述第二部分220相对所述转轴基座110转动，实现所述第一部分210与所述第二部分220相叠合或展开，使得所述电子设备1000呈现折叠或展开两种使用状态。所述电子设备1000可以是手机、或平板电脑、或笔记本电脑等设备。
通过所述转动件121设有第一锥齿轮123，所述同步传动组件130包括复合齿轮131，每一所述复合齿轮131设有第二锥齿轮132和与所述第二锥齿轮132同轴转动的直齿轮133，两个所述第二锥齿轮132分别与两个所述第一锥齿轮123相啮合，两个所述直齿轮133相互啮合，使得所述转动件121经所述同步传动组件130带动另一侧的转动件121同步转动，进而两个所述主体120可绕所述转轴基座110同步转动。
本实施方式中，所述机壳122具有第一边缘1221和与所述第一边缘1221相对第二边缘1222。两个所述机壳122的第一边缘1221可分别固定连接所述第一部分210的端部和所述第二部分220的端部。所述第二边缘1222邻近所述转轴基座110。所述转动件121固定于所述第二边缘1222，并部分相对所述第二边缘1222凸出。所述转动件121相对所述第二边缘1222凸出的部分伸入所述转轴基座110内，与所述转轴基座110内的转轴转动连接。所述机壳122可在所述第二边缘1222排布多个所述转动件121，多个所述转动件121沿所述第二边缘1222的长度方向等距排列。所述主体120还可以包括与所述机壳122盖合的盖板124。所述机壳122与所述盖板124之间形成收容腔125，所述转动件121的一部分收容于所述收容腔125内。所述收容腔125内还可以收容功能器件。该功能器件可以是电池、电路板、连接器、存储器、处理器、摄像头、指纹模组、扬声器、听筒等。所述盖板124背离所述机壳122的一面平整设置，使得两个所述主体120的盖板124可分别支撑所述第一部分210和所述第二部分220。当然，在其他实施方式中，两个所述主体120的盖板124也可以是分别与所述第一部分210和第二部分220滑动连接，以补偿所述柔性显示屏200的长度变化。
本实施方式中，所述转轴基座110具有分别转动连接两个所述主体120的两个侧部。所述转轴基座110大致形成两个所述主体120的转轴结构，以使得两个所述主体120可经所述转轴基座110相互翻转。所述转轴基座110呈矩形杆状。所述转轴基座110的长度方向平行所述转动件121的转动轴向。所述转轴基座110设有转轴腔111，所述同步传动组件130部分设置于所述转轴腔111内，以减小所述转轴基座110的体积。所述转动件121远离所述机壳122的部分可转动至所述转轴腔111内。当两个所述主体120分别带动所述第一部分210和所述第二部分220处于展开状态，所述可弯折部分230位于所述转轴腔111外，两个所述转动件121位于所述转轴腔111外。当两个所述主体120分别带动所述第一部分210和所述第二部分220处于叠合状态，所述转动件121远离所述机壳122的一端转动入所述转轴腔111内。
本实施方式中，所述转动件121设有转动连杆126，所述转动连杆126的一端固定连接所述机壳122，另一端转动连接所述第一转动轴，所述第一锥齿轮123设置于所述转动连杆126转动连接所述第一转动轴的一端。所述转动连杆126呈垂直所述第二边缘1222延伸，以方便所述转动连杆126绕所述转轴基座110转动。即所述转动连杆126包括固定连接所述机壳122的第一端1261和与所述第一端1261相对的第二端1262。所述第二端1262转动连接所述转轴基座110。所述第一锥齿轮123设置于所述第二端1262。所述第二端1262设有大致垂直所述盖板124的侧面1263。所述第一锥齿轮123设置于所述侧面1263上。所述第二端1262还设有大致平行所述盖板124并连接所述侧面1263的顶面1264，所述第二端1262还设有与所述顶面1264相对并连接所述侧面1263的底面1265。在所述柔性显示屏200处于展平状态，所述顶面1264可对所述可弯折部分230进行支撑。所述第一锥齿轮123设有与所述顶面1264平齐的断面1231，以使得所述第一锥齿轮123体积减小，进行减小所述转轴基座110的整体体积。所述复合齿轮131完全收容于所述转轴腔111内。所述第一锥齿轮123部分相对底面1265凸出，以使得在所述转动件121的底面1265大致与所述转轴腔111的开口平齐时，所述第一锥齿轮123的一部分还可以伸入所述转轴腔111内，与所述复合齿轮131保持相啮合的状态。当然，在其他实施方式中，所述第一锥齿轮123也可以与所述转动件121可 拆卸连接，方便对所述第一锥齿轮123拆卸维护。
本实施方式中，所述复合齿轮131转动连接于所述转轴腔111底部。所述复合齿轮131的转动轴垂直所述第一锥齿轮123的转动轴。即所述第二锥齿轮132的转动轴垂直所述第一锥齿轮123的转动轴。所述第二锥齿轮132的转动平面与所述第一锥齿轮123的转动平面垂直，在将所述第一锥齿轮123与所述第二锥齿轮132进行配合时，降低所述第一锥齿轮123与所述转轴腔111底部的距离，可以消除所述第一锥齿轮123与所述第二锥齿轮132的中心距公差，从而避免所述第一锥齿轮123与所述第二锥齿轮132的空转，可以保证两个所述主体120同步转动的有效性。
具体的，所述机壳122带动所述转动件121绕所述转轴基座110转动，并带动所述柔性显示屏200的第一部分210绕所述转轴基座110翻转，所述转动件121带动所述第一锥齿轮123转动，所述第一锥齿轮123带动所述第二锥齿轮132转动，所述第二锥齿轮132带动所述直齿轮133转动，所述直齿轮133带动另一侧的所述直齿轮133转动，另一侧的所述直齿轮133带动另一侧的所述第二锥齿轮132转动，另一侧所述第二锥齿轮132带动另一侧的所述第一锥齿轮123转动，另一侧的所述第一锥齿轮123带动另一侧的所述转动件121转动，另一侧的所述转动件121带动另一侧所述机壳122以及所述第二部分220绕所述转轴基座110转动，从而使得所述第一部分210和所述第二部分220同步绕所述转轴基座110转动叠合。
进一步地，请参阅图4，所述转轴基座110设有底座112和固定于所述底座112的转轴支架113，所述转轴支架113设有转动连接所述转动件121的第一转动轴114，所述转轴基座110设有转动连接所述复合齿轮131的第二转动轴115，所述第一转动轴114与所述第二转动轴115相垂直。
本实施方式中，所述转轴腔111开设于所述底座112。所述转轴支架113的底部固定于所述转轴腔111内。所述第一转动轴114位于所述转轴支架113露出所述转轴腔111的部分。所述转轴支架113设有两个所述第一转动轴114。两侧所述主体120的转动件121分别转动连接两个所述第一转动轴114。所述转动件121远离所述机壳122的一端套设于所述第一转动轴114上。所述第一锥齿轮123套设于所述第一转动轴114上。所述机壳122绕所述转轴基座 110转动的转动扭矩经所述转动件121传递至所述第一锥齿轮123，使得所述第一锥齿轮123以所述第一转动轴114作为转动轴转动。所述第二转动轴115由所述转轴腔111的底部朝向所述转轴腔111的开口延伸。所述复合齿轮131套设于所述第二转动轴115上。两个所述第二转动轴115的间距大致等于两个所述直齿轮133的节径之和。利用所述第一转动轴114与所述第二转动轴115垂直，避免所述第一锥齿轮123与所述第二锥齿轮132存在中心距公差。由于所述第二转动轴115与所述第一转动轴114垂直，使得所述同步传动组件130的高度大致等于所述复合齿轮131的厚度，即所述同步传动组件130的高度可有效减小，所述转轴基座110的体积可有效减小。
进一步地，所述转动连杆126转动连接所述第一转动轴114的一端设有平行所述第一转动轴114延伸的锥形凸台，所述锥形凸台的周侧壁设有多个第一锯齿1232，所述多个第一锯齿1232和所述锥形凸台形成所述第一锥齿轮123。
本实施方式中，所述锥形凸台设置于所述第二端1262远离所述转轴支架113的侧面1263。所述锥形凸台设有第一倾斜侧壁。多个所述第一锯齿1232在所述第一倾斜侧壁上等距排布。多个所述第一锯齿1232形成所述第一锥齿轮123的锯齿。多个所述第一锯齿1232在所述第一倾斜侧壁的排布弧度大于90°，以使得所述转动件121可绕所述转轴基座110至少转动90°，并且保证两个所述主体120可同步转动。利用所述第一锥齿轮123形成于所述转动连杆126的侧面1263上，使得所述第一锥齿轮123与所述转动连杆126一体设置，消除所述第一锥齿轮123与所述转动连杆126的组装公差，以及防止所述第一锥齿轮123相对所述转动连杆126滞后转动。
进一步地，所述复合齿轮131包括轴套1311、固定于所述轴套1311周侧的第一扇形片1312和固定于所述轴套1311周侧的第二扇形片1313，所述轴套1311转动连接所述第二转动轴115，所述第一扇形片1312远离所述轴套1311的周缘设有第二倾斜侧壁和排布于所述第二倾斜侧壁的多个第二锯齿1314，所述第一扇形片1312和所述多个第二锯齿1314形成所述第二锥齿轮132，所述第二扇形片1313远离所述轴套1311的周缘设有直壁和排布于所述直壁的多个第三锯齿1315，所述第二扇形片1313和所述第三锯齿1315形成 所述直齿轮133。
本实施方式中，所述轴套1311套设于所述第二转动轴115。所述第一扇形片1312和所述第二扇形片1313均沿垂直所述第二转动轴115方向延伸，所述第一扇形片1312和所述第二扇形片1313在垂直所述第二转动轴115方向上并排设置。所述第二倾斜侧壁的弧度大致为90°。所述直壁的弧度大致为90°。所述转动件121绕所述转轴基座110转动90°，所述第二锥齿轮132可相对所述底座112转动90°，所述直齿轮133可相对所述底座112转动90°。所述第一扇形片1312、所述第二扇形片1313和所述轴套1311一体设置，使得所述第二锥齿轮132与所述直齿轮133同步相对所述底座112转动。
进一步地，所述底座112设有底板1121和固定于所述底板1121两侧的两个侧板1122，两个所述侧板1122分别邻近于所述机壳122，所述转轴支架113固定于所述两个所述侧板1122以及所述底板1121之间，所述第二转动轴115设置于所述底板1121。
本实施方式中，所述转轴腔111设置于两个所述侧板1122和所述底板1121之间。所述转轴支架113的底部固定于所述底板1121上。所述转轴支架113包括轴承底板1131和固定于所述轴承底板1131的轴承竖板1132。所述第一转动轴114设置于所述轴承竖板1132上，沿垂直所述轴承竖板1132延伸。所述轴承底板1131贴合所述底板1121。第二转动轴115垂直所述底板1121延伸。所述复合齿轮131和所述轴承底板1131在所述底板1121上间隔设置。所述轴承竖板1132与所述侧板1122间隔设置，以保证两个所述第一转动轴114的连线所在平面与所述底板1121的平行度，即保证两个所述第一转动轴114距离所述底板1121一致，从而保证所述同步传动组件130的同步传动效率。所述侧板1122和所述底板1121可对所述同步传动组件130及所述转轴支架113进行防护。
本实施方式中，所述第一转动轴114位于所述轴承竖板1132大致与所述转轴腔111开口端平齐的位置，使得所述侧板1122远离所述底板1121的边缘可对所述转动件121进行转动限位。具体的，当所述转动连杆126转动至与所述侧板1122远离所述底板1121的边缘相抵触状态，两个所述转动连杆126大致平齐，并带动两个所述机壳122相互展开，使得所述第一部分210与 所述第二部分220展平，所述侧板1122限制所述转动件121继续朝向所述底板1121转动，即限制两个所述机壳122继续转动，从而可以防止所述柔性显示屏200被拉裂。所述转轴腔111可对所述转动连杆126远离所述机壳122的一端收容。当所述柔性显示屏200处于展平状态，两个所述转动连杆126的第二端1262相互拼接。当所述柔性显示屏200处于折叠状态，两个所述机壳122相互叠合，两个所述转动连杆126的第二端1262均收容于所述转轴腔111内，且均靠近所述底板1121，进而保证所述转轴腔111可收容所述可弯折部的一部分。
在另一个实施例中，请参阅图5，与图4实施例大致相同，不同的是，所述第二转动轴115也可以是滑动设置于所述底板1121。具体的，所述底座112还包括滑动连接于所述底板1121的滑块1124和弹性压缩于所述滑块1124和所述底板1121之间的弹性件1125。所述滑块1124的滑动方向平行所述转轴基座110的长度方向。所述弹性件1125用以提供所述滑块1124朝向所述转轴支架113滑动的弹性回复力。所述第二转动轴115设置于所述滑块1124上。所述第二转动轴115沿垂直所述底板1121延伸。所述滑块1124可带动所述复合齿轮131的第二锥齿轮132朝向所述转轴支架113靠近移动，即使得所述第二锥齿轮132沿平行平行所述第一转动轴114的方向抵持所述第一锥齿轮123，即增加所述第一锥齿轮123与所述第二锥齿轮132的配合紧密度，减小所述第一锥齿轮123与所述第二锥齿轮132配合间隙，提高所述第一锥齿轮123与所述第二锥齿轮132的同步转动效率。
本申请实施例提供的折叠装置100及电子设备1000，通过所述转动件121设有第一锥齿轮123，所述同步传动组件130包括复合齿轮131，每一所述复合齿轮131设有第二锥齿轮132和与所述第二锥齿轮132同轴转动的直齿轮133，两个所述第二锥齿轮132分别与两个所述第一锥齿轮123相啮合，两个所述直齿轮133相互啮合，使得所述转动件121经所述同步传动组件130带动另一侧的转动件121同步转动，进而两个所述主体120可绕所述转轴基座110同步转动。
以上是申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离申请原理的前提下，还可以做出若干改进和润饰，这些改 进和润饰也视为申请的保护范围。

Claims (20)

  1. 一种折叠装置，其特征在于，所述折叠装置包括转轴基座、设置于所述转轴基座相对两侧的两个主体和连接于两个所述主体的同步传动组件；每一所述主体设有转动连接所述转轴基座的转动件和固定连接所述转动件的机壳，两个所述转动件分别带动两个所述机壳相互展开或闭合；每一所述转动件转动连接所述转轴基座的一端设有第一锥齿轮；第一锥齿轮的转动轴与所述转动件转动连接所述转轴基座的转动轴同轴设置；所述同步传动组件包括两个转动连接于所述转轴基座的复合齿轮，每一所述复合齿轮设有第二锥齿轮和与所述第二锥齿轮同轴转动的直齿轮，两个所述第二锥齿轮分别与两个所述第一锥齿轮相啮合，两个所述直齿轮相互啮合。
  2. 根据权利要求1所述的折叠装置，其特征在于，所述机壳具有第一边缘和与所述第一边缘相对第二边缘，两个所述机壳的第一边缘用以分别固定连接柔性显示屏的两端部，所述第二边缘邻近所述转轴基座。
  3. 根据权利要求2所述的折叠装置，其特征在于，所述转动件固定于所述第二边缘，并部分相对所述第二边缘凸出，所述转动件相对所述第二边缘凸出的部分伸入所述转轴基座内，与所述转轴基座内的转轴转动连接。
  4. 根据权利要求3所述的折叠装置，其特征在于，所述机壳在所述第二边缘排布多个所述转动件，多个所述转动件沿所述第二边缘的长度方向等距排列。
  5. 根据权利要求3所述的折叠装置，其特征在于，所述主体还包括与所述机壳盖合的盖板，所述盖板用以支撑所述柔性显示屏，所述机壳与所述盖板之间形成收容腔，所述转动件的一部分收容于所述收容腔内。
  6. 根据权利要求1所述的折叠装置，其特征在于，所述转轴基座设有底座和固定于所述底座的转轴支架，所述转轴支架设有转动连接所述转动件的第一转动轴，所述转轴基座设有转动连接所述复合齿轮的第二转动轴，所述第一转动轴与所述第二转动轴相垂直。
  7. 根据权利要求6所述的折叠装置，其特征在于，所述底座设有转轴腔，所述转轴支架的底部固定于所述转轴腔内，所述第一转动轴设置于所述转轴支架露出所述转轴腔的部分。
  8. 根据权利要求7所述的折叠装置，其特征在于，所述转轴支架设有两个所述第一转动轴，两侧所述主体的转动件分别转动连接两个所述第一转动轴。
  9. 根据权利要求7所述的折叠装置，其特征在于，所述转动件远离所述主体的一端套设于所述第一转动轴上，所述第一锥齿轮套设于所述第一转动轴上。
  10. 根据权利要求7所述的折叠装置，其特征在于，所述第二转动轴由所述转轴腔的底部朝向所述转轴腔的开口延伸，所述复合齿轮套设于所述第二转动轴上。
  11. 根据权利要求6所述的折叠装置，其特征在于，所述转动件设有转动连杆，所述转动连杆的一端固定连接所述机壳，另一端转动连接所述第一转动轴，所述第一锥齿轮设置于所述转动连杆转动连接所述第一转动轴的一端。
  12. 根据权利要求11所述的折叠装置，其特征在于，所述转动连杆转动连接所述第一转动轴的一端设有平行所述第一转动轴延伸的锥形凸台，所述锥形凸台的周侧壁设有多个第一锯齿，所述多个第一锯齿和所述锥形凸台形成所述第一锥齿轮。
  13. 根据权利要求12所述的折叠装置，其特征在于，多个所述第一锯齿在所述锥形凸台的周侧壁排布弧度大于90°。
  14. 根据权利要求6所述的折叠装置，其特征在于，所述复合齿轮包括轴套、固定于所述轴套周侧的第一扇形片和固定于所述轴套周侧的第二扇形片，所述轴套转动连接所述第二转动轴，所述第一扇形片远离所述轴套的周缘设有倾斜侧壁和排布于所述倾斜侧壁的多个第二锯齿，所述第一扇形片和所述多个第二锯齿形成所述第二锥齿轮，所述第二扇形片远离所述轴套的周缘设有直壁和排布于所述直壁的多个第三锯齿，所述第二扇形片和所述第三锯齿形成所述直齿轮。
  15. 根据权利要求6所述的折叠装置，其特征在于，所述底座设有底板和固定于所述底板两侧的两个侧板，两个所述侧板分别邻近于所述机壳，所述转轴支架固定于所述两个所述侧板以及所述底板之间，所述第二转动轴设置于所述底板。
  16. 根据权利要求15所述的折叠装置，其特征在于，所述转轴支架包括轴 承底板和固定于所述轴承底板的轴承竖板，所述第一转动轴设置于所述轴承竖板上，沿垂直所述轴承竖板延伸，所述轴承底板贴合所述底板。
  17. 根据权利要求15所述的折叠装置，其特征在于，当两个所述转动件转动至与所述侧板远离所述底板的边缘相抵触状态，两个所述机壳相互展开。
  18. 根据权利要求15所述的折叠装置，其特征在于，当两个所述转动件远离所述机壳的一端转动至接近所述底板时，两个所述机壳相互叠合。
  19. 根据权利要求1～18任意一项所述的折叠装置，其特征在于，每一所述主体设有多个所述转动件，每一所述主体的多个所述转动件沿平行所述转轴基座长度方向间隔排布，所述每一所述主体的机壳固定连接多个所述转动件。
  20. 一种电子设备，其特征在于，所述电子设备包括权利要求1～19任意一项所述的折叠装置，所述电子设备还包括柔性显示屏，所述柔性显示屏包括两个可相对叠合或展开的部分，所述两部分分别固定于所述两个机壳，可随所述两个机壳相互转动而叠合或展开。
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