WO2020042872A1 - 转轴及具有该转轴的电子设备 - Google Patents

转轴及具有该转轴的电子设备 Download PDF

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Publication number
WO2020042872A1
WO2020042872A1 PCT/CN2019/099233 CN2019099233W WO2020042872A1 WO 2020042872 A1 WO2020042872 A1 WO 2020042872A1 CN 2019099233 W CN2019099233 W CN 2019099233W WO 2020042872 A1 WO2020042872 A1 WO 2020042872A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating shaft
gear
arm
rack
sleeve
Prior art date
Application number
PCT/CN2019/099233
Other languages
English (en)
French (fr)
Inventor
张新富
Original Assignee
维沃移动通信有限公司
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 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to ES19854552T priority Critical patent/ES2960893T3/es
Priority to EP19854552.7A priority patent/EP3845996B1/en
Priority to KR1020217009314A priority patent/KR102496071B1/ko
Priority to JP2021510659A priority patent/JP7108785B2/ja
Publication of WO2020042872A1 publication Critical patent/WO2020042872A1/zh
Priority to US17/186,241 priority patent/US11507144B2/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel

Definitions

  • the present disclosure relates to the technical field of electronic devices, and in particular, to a rotating shaft and an electronic device having the rotating shaft.
  • a first casing 102 and a second casing 103 are provided on one side of the flexible screen 101, and the first casing 102 and the second casing
  • the casing 103 is connected through a rotating shaft 104.
  • the first casing 102 and the second casing 103 rotate around the rotating shaft 104 to drive the flexible screen 101 to expand, as shown in FIG. 2a and The expanded state shown in Figure 2b.
  • the first casing 102 and the second casing 103 are rotated around the rotation axis 104 to drive the flexible screen 101 to be bent, and are folded as shown in FIGS. 1a and 1b. .
  • the first case 102 and the second case 103 of the electronic device are folded, thereby reducing the size of the electronic device in the folded state and achieving the effect of being portable.
  • the sum of the lengths of the first casing 102 and the second casing 103 in the direction perpendicular to the axial direction of the rotating shaft 104 in the unfolded state is reduced relative to the folded state, resulting in
  • the flexible screen 101 generates wrinkles in the unfolded state, thereby reducing the aesthetics of the flexible screen 101 and reducing the service life of the flexible screen 101.
  • the rotating shaft in the related art has a problem that the service life of the flexible screen is reduced.
  • Embodiments of the present disclosure provide a rotating shaft and an electronic device having the rotating shaft, so as to solve the problem that the rotating shaft in the related art reduces the service life of the flexible screen.
  • an embodiment of the present disclosure provides a hinge, which is applied to a foldable electronic device.
  • the electronic device has a first housing and a second housing.
  • the hinge includes at least one hinge component. include:
  • a first swing arm one end of which is fixedly connected to the gear
  • a second swing arm, a first end of the second swing arm is provided with a rack gear meshing with the gear;
  • the first rotary arm drives the gear to rotate around the rotation axis, so that the second end of the second rotary arm moves in a direction of pushing or pulling away from or near the rotation axis.
  • the rack is a flexible rack, and a portion of the rack that meshes with the gear is wound around a periphery of the gear.
  • the at least one rotating shaft component includes a first rotating shaft component and a second rotating shaft component
  • a rack in the first rotating shaft assembly is wound around a gear in the first rotating shaft assembly in a first direction, and a rack in the second rotating shaft assembly is wound in a direction opposite to the first direction.
  • a gear in the second rotating shaft assembly is provided.
  • the at least one rotating shaft component includes a third rotating shaft component and a fourth rotating shaft component;
  • the racks in the third shaft assembly and the racks in the fourth shaft assembly are wound around respective gears in the same direction.
  • the rotating shaft further includes:
  • a partition wheel disposed on the rotating shaft and sandwiched between the first rotating shaft component and the second rotating shaft component.
  • the rotating shaft further includes:
  • a sleeve the sleeve is provided with a first opening, the rack is at least partially sandwiched between the sleeve and the gear; the second spiral arm penetrates the first opening and extends to The sleeve is outside.
  • the sleeve is further provided with a second opening, and the first spiral arm penetrates the second opening and extends outside the sleeve, wherein the opening direction of the second opening is different from that of the sleeve.
  • the opening direction of the first opening is opposite.
  • the first swing arm is fixed to one end of the first swing arm.
  • the rotating shaft further includes a cap covering an end portion of the rotating shaft, and the cap includes:
  • an embodiment of the present disclosure further provides an electronic device including a first case, a second case, a flexible screen disposed on the first case and the second case, and as described above.
  • the other end of the first rotating arm is connected to one of the first housing or the second housing, and the second end of the second rotating arm is connected to the first housing or the first housing The other of the two shells is connected.
  • the extension length of the second swing arm can be extended or shortened as the gear rotates, so that the housing can be oriented away from or close to the rotation axis. motion.
  • the distance between the casing and the casing can be adjusted during the process of unfolding or folding the electronic device, so that the flexible screen can always be kept in an extended state when it is unfolded, and the problem of wrinkles when the flexible screen is unfolded is avoided.
  • FIG. 1a is a front view of a folding screen in a related art in a folded state
  • FIG. 1b is a top view of a folding screen in a related art in a folded state
  • FIG. 2a is a front view of a folding screen in a related art in an expanded state
  • FIG. 2b is a top view of a folding screen in a related art in an unfolded state
  • 3a is a structural diagram of a hinge assembly in a folded state
  • 3b is a structural diagram of a hinge assembly in a deployed state
  • FIG. 4 is a structural diagram of another type of rotating shaft assembly in an unfolded state
  • FIG. 5 is a structural diagram of a rotating shaft in a folded state according to an embodiment of the present disclosure
  • FIG. 6 is a exploded view of the rotating shaft in FIG. 5;
  • FIG. 7 is a structural diagram of a rotating shaft in an unfolded state according to an embodiment of the present disclosure.
  • FIG. 8 is a exploded view of the rotating shaft in an unfolded state in FIG. 7;
  • FIG. 9 is a top view of a rotating shaft in a folded state according to an embodiment of the present disclosure.
  • Fig. 10 is a sectional view taken along the A-A direction in Fig. 9;
  • FIG. 11 is a top view of a rotating shaft in an unfolded state according to an embodiment of the present disclosure
  • Fig. 12 is a sectional view taken along the B-B direction in Fig. 11.
  • the rotating shaft provided in the embodiment of the present disclosure can be mounted on a foldable electronic device, and is used to solve the wrinkles caused by the flexible screen assembled on the electronic device in the related art due to expansion, thereby improving the service life of the electronic device and the flexible screen.
  • an embodiment of the present disclosure provides a rotating shaft applied to a foldable electronic device.
  • the rotating shaft includes at least one rotating shaft assembly 31.
  • the rotating shaft assembly 31 includes a rotating shaft 311 and a gear sleeved on the rotating shaft 311. 312.
  • a first swing arm 313, one end of the first swing arm 313 is fixedly connected to the gear 312, and a second swing arm 314, and a first end of the second swing arm 314 is provided with a rack 3141 that meshes with the gear 312.
  • the first rotating arm 313 drives the gear 312 to rotate around the rotation axis 311, so that the second end of the second rotating arm 314 moves in a direction away from or close to the rotation axis 311.
  • the second rotating arm 314 extends in a direction perpendicular to the rotation axis 311.
  • the above-mentioned rotating shaft is installed between the first housing and the second housing of the electronic device.
  • the first housing is fixed to the first rotary arm 313, and the second housing is fixed to the second rotary arm 314.
  • the first swing arm 313 and the second swing arm 314 extend in the same direction, so that the first casing and the The second casing is folded to reduce the area of the electronic device.
  • the first rotating arm 313 and the second rotating arm 314 extend in the opposite direction under the action of the rotating shaft assembly 31, so that the first casing and the second casing are located on the same horizontal plane, so as to increase the area of the electronic device.
  • the first swing arm 313 can drive the gear 312 to rotate 90 degrees about the rotation axis 311 under the action of the first housing, thereby driving the rack 3141 meshing with the gear 312 to the first position.
  • the flexible screens installed in the first casing and the second casing are prevented from wrinkling due to expansion.
  • the rack 3141 is a flexible rack. An end of the rack 3141 near the gear 312 is wound around the periphery of the gear 312 and meshes with the gear 312. The rack 3141 is not wound around the periphery of the gear 312. A portion extends in the same direction as the second rotating arm 314.
  • the flexible rack can be wound on the gear.
  • the length of the rack can be reduced by winding, thereby saving the rack space and reducing the space occupied by the rotating shaft. Effect.
  • the rack 3141 can also be a rigid structure as shown in FIG. 4.
  • the process of changing the flexible screen 101 from the folded state to the unfolded state will occur.
  • the length of the flexible screen 101 in a direction perpendicular to the rotation axis 104 is greater than the width of the electronic device in a direction perpendicular to the rotation axis 104, so wrinkles are formed.
  • an end of the rigid rack far from the second rotary arm 314 may have a protruding end in a direction perpendicular to the rotation axis 311, and the gear 312 meshes with the protruding end of the rack 3141
  • the gear 312 rotates and moves in the direction of the protruding end relative to the rack 3141, thereby driving the rigid rack toward the second
  • the direction of the second end of the swing arm 314 moves, so as to achieve the effect of pushing and pulling the casing of the electronic device through the second end of the second swing arm 314 to prevent the flexible screen from wrinkling.
  • the material of the rack 3141 can also be set as an elastic material, so that the portion of the rack 3141 that meshes with the gear 312 is wound around the gear 312 by its own elastic force, and the rack 3141 made of the elastic material is wound around
  • the length of the circumference of the gear 312 is at least 1 ⁇ 2 times the circumference of the gear 312, so that the gear 312 can be kept in mesh with the elastic force provided by the elastic rack itself.
  • the flexible rack 3141 can also be pressed against the periphery of the gear 312 by providing a sleeve on the outside of the rack 3141 to mesh with the gear 312.
  • the first swing arm 313 is fixedly connected to one end of the gear 312.
  • first rotating arm 313 may also be fixed to the periphery of the gear 312, which is not specifically limited herein.
  • the extension length of the second swing arm can be extended or shortened as the gear rotates, so that the housing can be oriented away from or close to the rotation axis. motion.
  • the distance between the casing and the casing can be adjusted during the process of unfolding or folding the electronic device, so that the flexible screen can always be kept in an extended state when it is unfolded, and the problem of wrinkles when the flexible screen is unfolded is avoided.
  • an embodiment of the present disclosure provides a rotating shaft 500 including a first rotating shaft component 51 and a second rotating shaft component 52.
  • the first shaft assembly 51 and the second shaft assembly 52 have the same structure as the shaft assembly 31 provided in the previous embodiment, and the rotation in the first shaft assembly 51 and the second shaft assembly 52 is the same.
  • the axis is the same rotation axis 53.
  • the first rotating shaft assembly 51 includes a first gear 511 and a first rotary arm 512 connected to the first gear 511.
  • the first rotary arm 512 is perpendicular to the first gear 511.
  • Axially extending, and a second spiral arm 513, a first end of the second spiral arm 513 is provided with a first rack 514, at least a portion of the first rack 514 meshes with the first gear 511, and the first tooth A portion of the bar 514 meshing with the first gear 511 is wound around the first gear 511.
  • the second rotating shaft assembly 52 includes a second gear 521 and a third rotating arm 522 connected to the second gear 521.
  • the third rotating arm 522 is perpendicular to the axial direction of the second gear 521.
  • a fourth spiral arm 523 is provided at a first end thereof with a second rack 524, at least a portion of the second rack 524 is engaged with the second gear 521, and the second rack 524 and the first The meshed portion of the two gears 521 is wound around the second gear 521.
  • the rotation shaft assembly included in the rotation shaft 500 is not limited to two, and the number of the rotation shaft assembly may be any number such as one, three, or four, and the same or similar beneficial effects can be obtained, which is not described here. Specific limitations.
  • the rotating shaft 500 includes a folded state as shown in FIGS. 9 and 10 and an unfolded state as shown in FIGS. 11 and 12.
  • the first rotating arm 512, the second rotating arm 513, the third rotating arm 522, and the fourth rotating arm 523 extend in the same direction.
  • the first swing arm 512 and the fourth swing arm 523 extend in the same direction
  • the second swing arm 513 and the third swing arm 522 extend in the same direction
  • the first swing arm The extending directions of 512 and the fourth rotating arm 523 are opposite to the extending directions of the second rotating arm 513 and the third rotating arm 522.
  • the direction in which the first rack 514 is wound around the first gear 513 is opposite to the direction in which the second rack 524 is wound around the second gear 521.
  • the first swing arm 512 is rotated 90 degrees in the first direction C shown in FIG. 10, and the second swing arm 513 is rotated 90 degrees in the second direction D, so that the first A gear 511 drives the first rack 514 meshed with the first gear 511 to extend in a direction in which the second arm 513 is located, so as to extend the length of the second arm 513, wherein the first direction C and the second direction D Reverse each other.
  • the second rotating arm in the first rotating shaft assembly and the fourth rotating arm in the second rotating shaft assembly can be extended in the lower direction to achieve symmetrical stretching of the flexible screen mounted on the electronic device to opposite sides. Therefore, the flexible screen is prevented from being wrinkled, so as to improve the aesthetics and the service life of the flexible screen.
  • the fourth rotation arm 523 is extended, and the specific process is the same as that of the second rotation arm 513 in the first rotation shaft assembly 51, and the first rotation shaft
  • the component 51 is synchronized with the second rotating shaft component 52 to switch between an opened state and a folded state.
  • the first swing arm 512 and the fourth swing arm 523 extend in the same direction
  • the second swing arm 513 and the third swing arm 522 extend in the same direction
  • the extending direction of the fourth rotating arm 523 is opposite to the extending direction of the second rotating arm 513 and the third rotating arm 522.
  • the second rotating arm 513 and the fourth rotating arm 523 can be extended in the opposite direction, so that the extended length of the rotating shaft 500 can be used to stretch the folds of the flexible screen of the electronic device due to expansion, so that the flexible screen It is kept flat in the unfolded state, thereby improving the aesthetics and service life of the flexible screen.
  • the direction in which the first rack 514 is wound around the first gear 513 and the direction in which the second rack 524 is wound around the second gear 521 may be the same.
  • the first housing of the electronic device is fixedly connected to the second swing arm 513 and the fourth swing arm 523 at the same time, and the second housing is fixedly connected to the first cantilever 512 and the third cantilever 522 (not shown) ) Therefore, during the rotation of the rotating shaft into the unfolded state, the connection of the second arm 513 and the fourth arm 523 is extended in the same direction, thereby jointly driving the first housing of the electronic device to move away from the second housing. , Thereby preventing the flexible screens provided on the first casing and the second casing from being wrinkled due to expansion.
  • the second swing arm and the fourth swing arm can be extended in the same direction, so that one case connected to the second swing arm and the fourth swing arm on the electronic device is moved away from the other case. , To achieve the effect of preventing the flexible screen from wrinkling.
  • the rotating shaft 500 further includes a blocking wheel 531 provided on the rotating shaft 53. Both ends of the rotating shaft 53 penetrate the first gear 511 and the second gear 521, respectively. Between the first gear 511 and the second gear 521.
  • the rotating shaft 500 further includes a sleeve 54, a first opening 541 is provided on the sleeve 54, and a second rack 524 is at least partially sandwiched between the sleeve 54 and the second gear 521;
  • the fourth rotating arm 523 penetrates the first opening 541 and extends outside the sleeve 54.
  • the sleeve 54 is also provided with a second opening 542, and the third spiral arm 522 penetrates the second opening 542 and extends outside the sleeve 54.
  • the opening direction of the second opening 542 is the same as that of the first opening 541. in contrast.
  • the length of the first opening 541 and the second opening 542 along the circumferential direction of the sleeve 54 is at least 1/4 times the circumference of the sleeve, so that the third swing arm 522 can move in the second direction D. Rotate 90 ° to enable the fourth swing arm 523 to rotate 90 ° in the first direction C
  • the structure of the rotating shaft can be made firmer through the sleeve, and the appearance of the rotating shaft can be more beautiful and smooth.
  • the first rotating arm 512 is fixed to one end of the first gear 511.
  • this embodiment includes two rotating shaft assemblies. Among them, a partition wheel 531 is provided between the first rotating shaft assembly 51 and the second rotating shaft assembly 52, and the first swing arm 512 is fixed away from the first gear 511. One end of the partition wheel 531.
  • first opening 541 and the second opening 542 on the sleeve 54 can be staggered along the axial direction of the sleeve 54, thereby increasing the structural strength of the sleeve 54.
  • first shaft assembly 51 is also applicable to the second shaft assembly 52. To avoid repetition, only the structure of the first shaft assembly 51 is specifically analyzed here.
  • the rotating shaft 500 further includes a first cap 55 covering the end portion of the rotating shaft 500.
  • the first cap 55 includes:
  • the engaging portion 552 is formed in a recessed direction away from the rotation shaft 53, and an end of the first arm 512 connected to the first gear 511 is engaged in the engaging portion 552.
  • the other end of the rotating shaft 500 is provided with a second cap 56 having the same structure as the first cap 55, and the structure 1 in which the sleeve 54 is connected to the first cap 55 is also applicable to the second cap 56.
  • the opposite ends of the rotation shaft 53 penetrate the first gear 511 and the second gear 521, respectively, so that the first gear 511 and the second gear 521 can rotate around the rotation shaft 53.
  • first cap and the second cap can be connected to both ends of the sleeve to prevent the sleeve from sliding in the axial direction, and the first gear and the second gear are restricted from being separated from the sleeve in the axial direction, thereby making the structure of the shaft more reliable.
  • An embodiment of the present disclosure further provides an electronic device including a first case, a second case, a flexible screen disposed on the first case and the second case, and the electronic device shown in FIGS. 3a to 12
  • the first housing and the second housing are connected through the rotating shaft.
  • the first housing and the second housing may be fixed to the first and second rotating arms in the rotating shaft assembly, respectively. connection.
  • the first spiral arm and the second spiral arm can be driven to be on the same horizontal plane, and the length of the second spiral arm is extended, thereby increasing the first casing and the second casing.
  • the distance between them can achieve the effect of stretching the flexible screen and avoiding wrinkles of the flexible screen.
  • the rotating shaft includes a first rotating shaft assembly and a second rotating shaft assembly as shown in FIG. 5 to FIG. 12, and the racks in the two rotating shaft assemblies are respectively wound around the corresponding gears in opposite directions
  • the first casing is connected to the fourth swing arm, and is slidably connected to the first swing arm
  • the second casing is connected to the second swing arm, and is slidly connected to the third swing arm, so that the first length of the fixed length can be prevented
  • the swivel arm and the third swivel arm prevent the first housing and the second housing from moving in a direction away from or close to the rotating shaft.
  • the first, second, third, and fourth arms can be driven at the same horizontal plane, and the second and the third arms can be driven to the same level.
  • the lengths of the four-rotation arms are respectively extended in opposite or the same direction, thereby increasing the distance between the first casing and the second casing, and stretching the flexible screen symmetrically along opposite sides to eliminate the flexible screen in the first A fold formed between the case and the second case.
  • the electronic device provided in the embodiment of the present disclosure is provided with a rotating shaft provided in the previous embodiment between the first casing and the second casing, so as to prevent the assembly on the first casing and the second casing in an unfolded state.
  • the flexible screen generates wrinkle defects, which makes the electronic device more beautiful and prolongs the service life of the electronic device.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Mechanical Engineering (AREA)
  • Telephone Set Structure (AREA)
  • Casings For Electric Apparatus (AREA)
  • Transmission Devices (AREA)

Abstract

一种转轴及具有该转轴的电子设备，所述转轴应用于可折叠的电子设备，所述转轴包括至少一个转轴组件（31），所述转轴组件（31）包括：旋转轴（311）、套设于所述旋转轴（311）的齿轮（312）、第一旋臂（313），所述第一旋臂（313）的一端与所述齿轮（312）固定连接；第二旋臂（314），所述第二旋臂（314）的第一端设置有与所述齿轮（312）相啮合的齿条（3141）；所述第一旋臂（313）带动所述齿轮（312）绕所述旋转轴（311）转动，使得所述第二旋臂（314）的第二端朝向远离或者靠近所述旋转轴（311）的方向运动。

Description

转轴及具有该转轴的电子设备
相关申请的交叉引用
本申请主张在2018年8月29日在中国提交的中国专利申请No.201810995662.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及电子设备技术领域，尤其涉及一种转轴及具有该转轴的电子设备。
背景技术
随着手机、电脑等电子设备的广泛普及与发展，用户对电子设备的屏幕的尺寸要求越来越高。为了便于增大电子设备的屏幕，同时避免电子设备过大而不便于携带、占空空间大等问题，可折叠的柔性屏随之诞生。
如图1a、图1b、图2a和图2b所示，在相关技术中，在柔性屏101的一侧设置有第一机壳102和第二机壳103，第一机壳102和第二机壳103通过转轴104连接，在观看视频、看电子书等需要展开电子设备的屏幕时，第一机壳102和第二机壳103绕转轴104旋转，驱动柔性屏101展开，呈如图2a与图2b所示的展开状态。在携带、收纳等需要缩小电子设备的屏幕时，第一机壳102和第二机壳103绕所述转轴104旋转，驱动柔性屏101弯折，呈如图1a与图1b所示的折叠状态。在折叠状态下，电子设备的第一机壳102与第二机壳103折叠，从而达到在折叠状态下缩小所述电子设备的尺寸，达到便于携带的效果。
但是，如图2a所示，由于在展开状态下第一机壳102与第二机壳103沿垂直于所述转轴104轴向的方向的长度之和相对于折叠状态有所减小，造成所述柔性屏101在展开状态下产生褶皱，从而降低了所述柔性屏101的美观度，并降低了所述柔性屏101的使用寿命。
由此可知，相关技术中的转轴存在降低了柔性屏的使用寿命的问题。
发明内容
本公开实施例提供一种转轴及具有该转轴的电子设备，以解决相关技术中的转轴存在的降低了柔性屏的使用寿命的问题。
为解决以上技术问题，本公开采用如下技术方案：
第一方面，本公开实施例提供了一种转轴，应用于可折叠的电子设备，所述电子设备具有第一壳体和第二壳体，所述转轴包括至少一个转轴组件，所述转轴组件包括：
旋转轴；
套设于所述旋转轴的齿轮；
第一旋臂，所述第一旋臂的一端与所述齿轮固定连接；
第二旋臂，所述第二旋臂的第一端设置有与所述齿轮相啮合的齿条；
所述第一旋臂带动所述齿轮绕所述旋转轴转动，使得所述第二旋臂的第二端朝向远离或者靠近所述旋转轴的方向运动的推拉力。
可选地，所述齿条为柔性齿条，所述齿条与所述齿轮啮合的部分卷绕于所述齿轮的周沿。
可选地，所述至少一个转轴组件包括第一转轴组件和第二转轴组件；
所述第一转轴组件中的齿条沿第一方向卷绕于所述第一转轴组件中的齿轮，所述第二转轴组件中的齿条沿与所述第一方向相反的方向卷绕于所述第二转轴组件中的齿轮。
可选地，所述至少一个转轴组件包括第三转轴组件和第四转轴组件；
所述第三转轴组件中的齿条与所述第四转轴组件中的齿条沿同一方向卷绕于各自相应的齿轮。
可选地，所述转轴还包括：
设置于所述旋转轴上并夹设于所述第一转轴组件与所述第二转轴组件之间的隔断轮。
可选地，所述转轴还包括：
套筒，所述套筒上设置有第一开口，所述齿条至少部分夹设于所述套筒与所述齿轮之间；所述第二旋臂贯穿所述第一开口，并延伸至所述套筒外。
可选地，所述套筒上还设有第二开口，所述第一旋臂贯穿所述第二开口， 并延伸至所述套筒外，其中，所述第二开口的开口方向与所述第一开口的开口方向相反。
可选地，所述第一旋臂固定于所述第一旋臂的一端。
可选地，所述转轴还包括覆盖设置于所述转轴的端部的盖帽，所述盖帽包括：
与所述套筒的端部匹配的卡槽，所述套筒的一端卡接于所述卡槽内；以及，
向远离所述旋转轴的方向凹陷形成的卡接部，所述第一旋臂的连接于所述齿轮的一端卡接于所述卡接部内。
第二方面，本公开实施例还提供了一种电子设备，包括第一壳体、第二壳体、设置于所述第一壳体和所述第二壳体上的柔性屏以及如上所述的转轴，，所述第一旋转臂的另一端与所述第一壳体或第二壳体中的一者连接，所述第二旋转臂的第二端与所述第一壳体或第二壳体中的另一者连接。
在本公开实施例中，通过在第二旋臂上设置齿条，使得第二旋臂的延伸长度能够随齿轮的旋转而伸长或缩短，从而能够使壳体朝向远离或靠近旋转轴的方向运动。这样，在电子设备展开或折叠的过程中，壳体与壳体之间的距离可调，从而能够使柔性屏展开时始终保持伸展状态，避免了柔性屏展开时发生褶皱的问题。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例或相关技术描述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本公开的一些实施例，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1a是相关技术中的折叠屏幕处于折叠状态下的主视图；
图1b是相关技术中的折叠屏幕处于折叠状态下的俯视图；
图2a是相关技术中的折叠屏幕处于展开状态下的主视图；
图2b是相关技术中的折叠屏幕处于展开状态下的俯视图；
图3a是一种转轴组件处于折叠状态下的结构图；
图3b是一种转轴组件处于展开状态下的结构图；
图4是另一种转轴组件处于展开状态下的结构图
图5是本公开实施例提供的一种转轴处于折叠状态下的结构图；
图6是图5中转轴的拆分图；
图7是本公开实施例提供的一种转轴处于展开状态下的结构图；
图8是图7中转轴处于展开状态下的拆分图；
图9是本公开实施例提供的一种转轴处于折叠状态下的俯视图；
图10是沿图9中A-A方向的剖视图；
图11是本公开实施例提供的一种转轴处于展开状态下的俯视图；
图12是沿图11中B-B方向的剖视图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开实施例提供的转轴，可以安装于可折叠的电子设备，用于解决相关技术中装配于电子设备上的柔性屏因展开而产生的褶皱，从而提升电子设备和柔性屏的使用寿命。
请参阅图3a与图3b，本公开实施例提供一种转轴，应用于可折叠的电子设备，该转轴包括至少一个转轴组件31，转轴组件31包括旋转轴311、套设于旋转轴311的齿轮312、第一旋臂313，第一旋臂313的一端与齿轮312固定连接，以及，第二旋臂314，第二旋臂314的第一端设置有与齿轮312相啮合的齿条3141，第一旋臂313带动齿轮312绕旋转轴311转动，使得第二旋臂314的第二端朝向远离或者靠近旋转轴311的方向运动。
其中，第二旋臂314沿垂直于旋转轴311的方向延伸。
在具体应用过程中，上述转轴安装于电子设备的第一壳体和第二壳体之间，例如：第一壳体固定于第一旋臂313，第二壳体固定于第二旋臂314，在如图3a所示的折叠状态下(图中未画出第一壳体和第二壳体)，第一旋臂313 与第二旋臂314同向延伸，从而使第一壳体和第二壳体折叠，以缩小电子设备的面积。在展开状态下，第一旋臂313与第二旋臂314在转轴组件31的作用下反向延伸，从而使第一壳体和第二壳体位于同一水平面，以增加电子设备的面积。
其中，由折叠状态向展开状态转变的过程中，第一旋臂313能够在第一壳体的作用下带动齿轮312绕旋转轴311转动90度，从而驱使啮合于齿轮312的齿条3141向第二旋臂314的第二端所在的方向移动(即减少齿条3141与齿轮312啮合的面积)，从而延长第二旋臂314的长度，达到推动第二壳体向远离第一壳体所在的方向移动的，避免装设于第一壳体与第二壳体上的柔性屏因展开而产生褶皱。
可选地，齿条3141为柔性齿条，齿条3141靠近齿轮312的一端卷绕于齿轮312的周沿，并与齿轮312相啮合，齿条3141的未卷绕于齿轮312的周沿的部分与第二旋臂314同向延伸。
这样，可以使柔性齿条卷绕于齿轮上，相对于沿直线延伸的刚性齿条，以卷绕的方式可以减少齿条的长度，从而可以节省齿条的占用空间，达到减少转轴的占用空间的效果。
当然，齿条3141也可以是如图4所示的刚性结构，在相关技术中，由于转轴104的外径和壳体的厚度，柔性屏101由折叠状态向展开状态转换的过程中，将发生柔性屏101沿垂直于转轴104的方向的长度大于电子设备的沿垂直于转轴104的宽度，因此会形成褶皱。
其中，如图4所示，在齿条3141为刚性齿条的情况下，为了在电子设备展开时，使刚性齿条有足够的裕度能够通过第二悬臂314的第二端推动一壳体朝远离另一壳体的方向移动，则在折叠状态下，刚性齿条的远离第二旋臂314的一端可以沿垂直于转轴311的方向具有突出端，齿轮312啮合于齿条3141的突出端与靠近第二旋臂314的一端之间，在转轴300展开至展开状态的过程中，齿轮312发生旋转，并相对于齿条3141向突出端所在的方向移动，从而带动刚性齿条向第二旋臂314的第二端所在的方向移动，从而达到通过第二旋臂314的第二端推拉电子设备的壳体，以防止柔性屏褶皱产生的效果。
另外，还可以将齿条3141的材质设置为弹性材料，从而使齿条3141与 齿轮312相啮合的部分依靠自身的弹性力卷绕于齿轮312，该弹性材料制成的齿条3141卷绕于齿轮312的周沿的长度至少大于1/2倍齿轮312的周长，从而能够依靠弹性齿条自身具备的弹性力与齿轮312保持啮合。
当然，还可以通过在齿条3141的外侧设置套筒而将柔性齿条3141压设于齿轮312的周沿，达到与齿轮312啮合。
另外，如图3a图3b所示，第一旋臂313固定连接于齿轮312的一端。
当然，第一旋臂313也可以固定于齿轮312的周沿，在此不做具体限定。
在本公开实施例中，通过在第二旋臂上设置齿条，使得第二旋臂的延伸长度能够随齿轮的旋转而伸长或缩短，从而能够使壳体朝向远离或靠近旋转轴的方向运动。这样，在电子设备展开或折叠的过程中，壳体与壳体之间的距离可调，从而能够使柔性屏展开时始终保持伸展状态，避免了柔性屏展开时发生褶皱的问题。
请参阅图5至图8，本公开实施例提供一种转轴500，包括第一转轴组件51和第二转轴组件52。
其中，如图6和图7所示，第一转轴组件51与第二转轴组件52与上一实施例提供的转轴组件31结构相同，且第一转轴组件51与第二转轴组件52中的旋转轴为同一个旋转轴53。
具体地，如图6和图7所示，第一转轴组件51包括：第一齿轮511、与第一齿轮511连接的第一旋臂512，该第一旋臂512垂直于第一齿轮511的轴向延伸，以及，第二旋臂513，该第二旋臂513的第一端设置有第一齿条514，第一齿条514的至少部分与第一齿轮511相啮合，且第一齿条514与第一齿轮511相啮合的部分卷绕于该第一齿轮511上。
如图6和图7所示，第二转轴组件52包括：第二齿轮521、与第二齿轮521连接的第三旋臂522，该第三旋臂522垂直于第二齿轮521的轴向，以及，第四旋臂523，该第四旋臂523的第一端设置有第二齿条524，第二齿条524的至少部分与第二齿轮521相啮合，且第二齿条524与第二齿轮521相啮合的部分卷绕于该第二齿轮521上。
另外，所述转轴500包括的转轴组件并不限定为两个，转轴组件的数量还可以是1个、3个或者4个等任意数量，且能够取得相同或者相似的有益 效果，在此不做具体限定。
另外，转轴500包括如图9和图10所示的折叠状态和如图11与图12所示的展开状态。
在如图9和图10所示的折叠状态下，第一旋臂512、第二旋臂513、第三旋臂522以及第四旋臂523同向延伸。
这样，可以在折叠状态下，减小安装有转轴的电子设备的占用空间，以便于携带和收纳等。
在如图11与图12所示的展开状态下，第一旋臂512与第四旋臂523同向延伸，第二旋臂513与第三旋臂522同向延伸，并且，第一旋臂512和第四旋臂523的延伸方向与第二旋臂513和第三旋臂522的延伸方向相反。
其中，第一齿条514卷绕于第一齿轮513的方向与第二齿条524卷绕于第二齿轮521的方向相反。
由折叠状态向展开状态打开的过程中，第一旋臂512沿图10中所示的第一方向C旋转了90度，第二旋臂513沿第二方向D旋转了90度，从而使第一齿轮511驱动啮合于该第一齿轮511上的第一齿条514向第二旋臂513所在的方向延伸，以延长第二旋臂513的长度，其中，第一方向C与第二方向D互为逆向。
这样，可以在下，第一转轴组件中的第二旋臂与第二转轴组件中的第四旋臂反向延伸，达到向相反的两侧使安装于电子设备上的柔性屏对称的拉伸，从而防止柔性屏产生褶皱，以提升所述柔性屏的美观度和使用寿命。
另外，第二转轴组件52由折叠状态向展开状态打开的过程中，第四旋臂523延长，其具体过程与第一转轴组件51中的第二旋臂513延长的过程相同，且第一转轴组件51与第二转轴组件52同步进行打开与折叠状态的切换。
具体地，如图7所示在展开状态下，第一旋臂512与第四旋臂523同向延伸，第二旋臂513与第三旋臂522同向延伸，并且，第一旋臂512和第四旋臂523的延伸方向与第二旋臂513和第三旋臂522的延伸方向相反。
这样，可以在展开状态下，使第二旋臂513和第四旋臂523反向延长，使转轴500的延长长度可以用于拉伸电子设备的柔性屏因展开而产生的褶皱，使柔性屏在展开状态下一直保持平整，从而提升了柔性屏的美观度和使用寿 命。
当然，第一齿条514卷绕于第一齿轮513的方向与第二齿条524卷绕于第二齿轮521的方向可以相同。
本实施例中，电子设备的第一壳体同时与的第二旋臂513和第四旋臂523固定连接，第二壳体与第一悬臂512和第三悬臂522固定连接(图未画出)，从而，在转轴旋转进入展开状态的过程中，第二旋臂513和第四旋臂523连接沿同一方向延长，从而共同驱动电子设备的第一壳体朝远离第二壳体的方向移动，从而防止设置于第一壳体和第二壳体上的柔性屏因展开而产生褶皱。
这样，可以在展开状态下，第二旋臂和第四旋臂沿同一方向延长，使电子设备上与第二旋臂和第四旋臂连接的一个壳体向远离另一壳体的方向移动，达到防止柔性屏产生褶皱的效果。
可选地，如图6所示，所述转轴500还包括设置于旋转轴53上的隔断轮531，旋转轴53的两端分别贯穿第一齿轮511和第二齿轮521，隔断轮531夹设于第一齿轮511和第二齿轮521之间。
这样，减少了第一齿轮和第二齿轮之间因逆向旋转而产生的摩擦，另外，还可以限制第一齿条和第二齿条向靠近隔断轮所在的方向发生偏移，从而，提升了转轴的结构可靠性。
可选地，如图6所示，转轴500还包括套筒54，套筒54上设置有第一开口541，第二齿条524至少部分夹设于套筒54与第二齿轮521之间；第四旋臂523贯穿第一开口541，并延伸至套筒54外。
另外，套筒54上还设有第二开口542，第三旋臂522贯穿第二开口542，并延伸至套筒54外，其中，第二开口542的开口方向与第一开口541的开口方向相反。
需要说明的是，第一开口541与第二开口542沿套筒54的周沿的方向的长度至少大于1/4倍套筒的周长，从而使第三旋臂522能够沿第二方向D旋转90°，使第四旋臂523能够沿第一方向C旋转90°
这样，可以通过套筒使转轴的结构更加牢固，并且使转轴的外观更加美观和光滑。
需要说明的是，上述结构同样适用于第一转轴组件51，在此仅以第二转 走组件52为例进行具体介绍与分析。
可选地，第一旋臂512固定于第一齿轮511的的一端。
如图6所示，本实施例中包括两个转轴组件，其中，第一转轴组件51与第二转轴组件52之间有隔断轮531，则第一旋臂512固定于第一齿轮511的远离隔断轮531的一端。
这样可以使套筒54上的第一开口541与第二开口542沿套筒54的轴向错开，从而增加套筒54的结构强度。
需要说明的是，上述第一转轴组件51的结构同样适用于第二转轴组件52，为避免重复，在此仅以第一转轴组件51的结构做具体分析。
可选地，转轴500还包括覆盖设置于转轴500的端部的第一盖帽55，第一盖帽55包括：
与套筒54的端部匹配的卡槽551，套筒54的一端卡接于卡槽551内；以及，
向远离旋转轴53的方向凹陷形成的卡接部552，第一旋臂512的连接于第一齿轮511的一端卡接于卡接部552内。
另外，转轴500的另一端设置有与第一盖帽55结构相同的第二盖帽56，且套筒54与第一盖帽55连接的结构1同样适用于第二盖帽56。
旋转轴53的相对两端分别贯穿第一齿轮511和第二齿轮521，以使第一齿轮511和第二齿轮521能够绕旋转轴53旋转。
另外，旋转轴53的相对两端分别抵接于第一盖帽55和第二盖帽56的靠近隔断轮531的一侧，从而通过第一盖帽55和第二盖帽56限制旋转轴53发生位移。
这样，可以采用第一盖帽与第二盖帽连接于套筒的两端，防止套筒沿轴向滑动，并且限制第一齿轮和第二齿轮沿轴向脱离套筒，从而使转轴的结构更加可靠。
本公开实施例还提供一种电子设备，该电子设备包括第一壳体、第二壳体、设置于第一壳体和第二壳体上的柔性屏，以及图3a至图12所示的任意一种转轴，第一壳体和第二壳体通过转轴连接。
具体地，在转轴仅包括如图3a至图4所示的一个转轴组件的情况下，可 以使第一壳体和第二壳体分别与转轴组件中的第一旋臂和第二旋臂固定连接。
在打开第一壳体与第二壳体时，可以驱动第一旋臂与第二旋臂位于同一水平面，并使第二旋臂的长度延长，从而增加了第一壳体与第二壳体之间的距离，达到拉伸柔性屏，避免柔性屏产生褶皱的效果。
在转轴包括如图5至图12所示的第一转轴组件和第二转轴组件，且两个转轴组件中的齿条分别沿相反的方向卷绕于各自相应的齿轮上的情况下，可以使第一壳体与第四旋臂连接，并与第一旋臂滑动连接，并使第二壳体与第二旋臂连接，并与第三旋臂滑动连接，这样可以防止固定长度的第一旋臂和第三旋臂阻碍第一壳体和第二壳体向远离所述转轴或者靠近所述转轴的方向移动。
在打开第一壳体与第二壳体使电子设备展开时，可以驱动第一旋臂、第二旋臂、第三旋臂和第四旋臂位于同一水平面，并使第二旋臂和第四旋臂的长度分别向相反或者相同的方向延长，从而增加了第一壳体与第二壳体之间的距离，达到沿相反的两侧对称地拉伸柔性屏，消除柔性屏在第一壳体与第二壳体之间形成的褶皱。
本公开实施例提供的电子设备通过，在第一壳体与第二壳体之间设置上一实施例提供的转轴，达到在展开状态下防止装配于第一壳体和第二壳体上的柔性屏产生褶皱的缺陷，从而使得电子设备更加美观，且延长了电子设备的使用寿命。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种转轴，应用于可折叠的电子设备，包括至少一个转轴组件，所述转轴组件包括：
    旋转轴；
    套设于所述旋转轴的齿轮；
    第一旋臂，所述第一旋臂的一端与所述齿轮固定连接；
    第二旋臂，所述第二旋臂的第一端设置有与所述齿轮相啮合的齿条；
    所述第一旋臂带动所述齿轮绕所述旋转轴转动，使得所述第二旋臂的第二端朝向远离或者靠近所述旋转轴的方向运动。
  2. 根据权利要求1所述的转轴，其中，所述齿条为柔性齿条，所述齿条与所述齿轮啮合的部分卷绕于所述齿轮的周沿。
  3. 根据权利要求2所述的转轴，其中，所述至少一个转轴组件包括第一转轴组件和第二转轴组件；
    所述第一转轴组件中的齿条沿第一方向卷绕于所述第一转轴组件中的齿轮，所述第二转轴组件中的齿条沿与所述第一方向相反的方向卷绕于所述第二转轴组件中的齿轮。
  4. 根据权利要求2所述的转轴，其中，所述至少一个转轴组件包括第三转轴组件和第四转轴组件；
    所述第三转轴组件中的齿条与所述第四转轴组件中的齿条沿同一方向卷绕于各自相应的齿轮。
  5. 根据权利要求3或4所述的转轴，其中，所述转轴还包括：
    设置于所述旋转轴上并夹设于所述第一转轴组件与所述第二转轴组件之间的隔断轮。
  6. 根据权利要求1至4中任一项所述的转轴，其中，所述转轴还包括：
    套筒，所述套筒上设置有第一开口，所述齿条至少部分夹设于所述套筒与所述齿轮之间；所述第二旋臂贯穿所述第一开口，并延伸至所述套筒外。
  7. 根据权利要求6所述的转轴，其中，所述套筒上还设有第二开口，所述第一旋臂贯穿所述第二开口，并延伸至所述套筒外，其中，所述第二开口 的开口方向与所述第一开口的开口方向相反。
  8. 根据权利要求6所述的转轴，其中，所述第一旋臂固定于所述齿轮的一端。
  9. 根据权利要求8所述的转轴，其中，所述转轴还包括覆盖设置于所述转轴的端部的盖帽，所述盖帽包括：
    与所述套筒的端部匹配的卡槽，所述套筒的一端卡接于所述卡槽内；以及，
    向远离所述旋转轴的方向凹陷形成的卡接部，所述第一旋臂的连接于所述齿轮的一端卡接于所述卡接部内。
  10. 一种电子设备，包括第一壳体、第二壳体和设置于所述第一壳体和所述第二壳体上的柔性屏，其中，所述电子设备还包括如权利要求1至9中任一项所述的转轴，所述第一旋转臂的另一端与所述第一壳体或第二壳体中的一者连接，所述第二旋转臂的第二端与所述第一壳体或第二壳体中的另一者连接。
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