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WO2020177708A1 - 链节、铰链以及移动终端 - Google Patents

链节、铰链以及移动终端 Download PDF

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Publication number
WO2020177708A1
WO2020177708A1 PCT/CN2020/077736 CN2020077736W WO2020177708A1 WO 2020177708 A1 WO2020177708 A1 WO 2020177708A1 CN 2020077736 W CN2020077736 W CN 2020077736W WO 2020177708 A1 WO2020177708 A1 WO 2020177708A1
Authority
WO
WIPO (PCT)
Prior art keywords
arc
hinge
locking hole
chain link
connecting pin
Prior art date
Application number
PCT/CN2020/077736
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 EP20766857.5A priority Critical patent/EP3936734A4/en
Publication of WO2020177708A1 publication Critical patent/WO2020177708A1/zh
Priority to US17/466,847 priority patent/US11973890B2/en

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking
    • 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
    • G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
    • 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
    • H04M1/026—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
    • 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
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • 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
    • F16C2380/00—Electrical apparatus
    • 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

Definitions

  • the present disclosure relates to the technical field of communication equipment, and in particular to a chain link, a hinge and a mobile terminal.
  • the embodiments of the present disclosure provide a chain link and a hinge to solve the problem of complicated hinge structure in the related art and affecting production cost.
  • an embodiment of the present disclosure proposes a chain link, which includes: at least one connecting hole, the connecting hole includes a first locking hole and a second locking hole communicating with each other, the first locking hole and The connection of the second locking hole position narrows the transition.
  • the chain link of this embodiment has connecting holes.
  • the overall structure of the chain link of the embodiment of the present disclosure is simple, the processing and assembly difficulty is low, and the production cost is low. In this way, when the chain link of the embodiment of the present disclosure is applied to a hinge, it can ensure that the overall structure of the hinge is simple, the number of parts is small, the processing and assembly difficulty is low, and the production cost is low.
  • a hinge which includes: two or more chain links arranged one after another and a connecting pin; two adjacent chain links are rotatably connected by the connecting pin, and the connecting pin is in the first Switch between a locking hole position and a second locking hole position and lock in the first locking hole position or the second locking hole position; wherein, when the hinge is in the unfolded state, the connecting pin is locked to the first lock In the stop hole position, when the hinge is in the bent state, the connecting pin is locked in the second locking hole position; the total length of the hinge in the unfolded state is less than the total length of all hinges in the bent state.
  • the hinge includes a chain link and a connecting pin.
  • the chain link of this embodiment has connecting holes.
  • the connecting hole has two mutually connected first locking hole positions and second locking hole positions.
  • the connecting pin shaft can freely move and switch between the first locking hole position and the second locking hole position, and at the same time, the adjacent two chain links can move relative to each other, thereby
  • the total length of the hinge in the unfolded state is made smaller than the total length of the hinge in the bent state, so that the hinge in the unfolded state of this embodiment does not have length redundancy and wrinkles or bends.
  • the hinge of the embodiment of the present disclosure has a simple overall structure, a small number of parts, low processing and assembly difficulty, and low production cost.
  • the hinge of the embodiment of the present disclosure When the hinge of the embodiment of the present disclosure is applied to a mobile terminal with a flexible screen, the hinge will not be wrinkled or bent, thereby reducing the possibility of damage to the flexible screen structure caused by the hinge applying local stress to the flexible screen.
  • a mobile terminal which includes:
  • the supporting bodies are connected, and when the hinge is switched between the expanded state and the bent state, the first supporting body and the second supporting body are close to or far away from each other to expand or bend the flexible screen.
  • the hinge included can ensure that the total length of the hinge when the hinge is in the unfolded state is less than the total length when the hinge is in the bent state, so that the hinge in the unfolded state will not be unfolded due to its own length redundancy. Wrinkles or bends occur in the state, which reduces the possibility of damage to the flexible screen structure caused by the local stress applied by the hinge to the flexible screen.
  • the hinge structure of this embodiment is simple and the manufacturing difficulty is low, so that its own production cost is low, so that the overall production cost of the mobile terminal is low.
  • Fig. 1 is a schematic structural diagram of a chain link according to an embodiment of the present disclosure
  • Fig. 2 is a schematic structural diagram of a chain link according to another embodiment of the present disclosure.
  • Figure 3 is a schematic structural view of the hinge in an unfolded position of an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of an exploded structure of the hinge in Figure 3;
  • Fig. 5 is a schematic structural diagram of a hinge in a folded position according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of the connection state of the connecting pin shaft in the first locking hole position of an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of the connection state of the connecting pin shaft in the second locking hole position of an embodiment of the present disclosure
  • Figure 8 is the total length of all the chain links in the deployed position of an embodiment of the present disclosure.
  • Figure 9 is the total length of all the chain links in the folded position of an embodiment of the present disclosure.
  • Fig. 10 is a schematic structural diagram of a hinge according to another embodiment of the present disclosure.
  • Fig. 11 is a schematic structural diagram of a hinge according to another embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure.
  • Chain link 10a, inner surface; 10b, outer surface; 100, end;
  • connection should be understood in a broad sense.
  • they may be fixed connections or alternatively.
  • Fig. 1 schematically shows the structure of a chain link 10 according to an embodiment of the present disclosure.
  • the chain link 10 of this embodiment has two connecting holes 11.
  • Each connecting hole 11 includes a first locking hole 110 and a second locking hole 111 communicating with each other.
  • the connection between the first locking hole 110 and the second locking hole 111 narrows the transition.
  • the two ends 100 of the chain link 10 along the length direction are respectively provided with a connecting hole.
  • the inner surface 10a may be a curved surface or a flat surface.
  • Each end 100 is provided with a connecting hole 11.
  • the first locking hole 110 is close to the central area of the chain link 10 relative to the second locking hole 111, and the second locking hole 111 is close to the edge of the end 100. That is, in the length direction, the first distance between the two first locking holes 110 is smaller than the second distance between the two second locking holes 111.
  • the first distance is the distance between the centers of the two first locking holes 110, and may also be the distance between the closest points of the two first locking holes 110.
  • the second distance is the same.
  • the hole wall of the connecting hole 11 includes a first arc-shaped surface 11a, a second arc-shaped surface 11b, and a third arc-shaped surface 11c. Two ends of the first arc-shaped surface 11a are respectively and smoothly connected to the second arc-shaped surface 11b and the third arc-shaped surface 11c.
  • the first arc-shaped surface 11a and the third arc-shaped surface 11c form the hole wall corresponding to the first locking hole 110, and the first arc-shaped surface 11a and the second arc-shaped surface 11b form the second locking hole 111.
  • the corresponding hole wall is a first arc-shaped surface 11a, a second arc-shaped surface 11b, and a third arc-shaped surface 11c.
  • the two adjacent ends of the second arc-shaped surface 11b and the third arc-shaped surface 11c are smoothly transitioned and connected to each other, and form a convex portion 11d protruding toward the first arc-shaped surface 11a.
  • the convex portion 11d has a deformable structure, so that when the convex portion 11d is subjected to an external force, the convex portion 11d itself can be deformed so that its highest point is away from the first arc-shaped surface 11a, and the distance from the first arc-shaped surface 11a Get bigger.
  • the highest point of the protrusion 11d corresponds to the highest point of the first arc-shaped surface 11a.
  • the first arcuate surface 11a is curved toward the protrusion 11d.
  • the second arc-shaped surface 11b includes a first arc segment, a second arc segment connected with the first arc segment, and a first transition segment connected with the second arc segment.
  • the third arc-shaped surface 11c includes a third arc segment, a fourth arc segment connected with the third arc segment, and a second transition segment connected with the fourth arc segment.
  • the two ends of the first circular arc segment and the third circular arc segment are smoothly transitioned and connected together to form a protrusion 11d.
  • the first transition section and the second transition section are respectively connected with two ends of the first arc-shaped surface 11a.
  • first transition section and the first arc-shaped surface 11a are circular arc transition connections
  • second transition section and the first arc-shaped surface 11a are also circular arc transition connections.
  • the second arc segment is curved toward the outer surface 10b, and the lowest point of the second arc segment is the same as the first arc.
  • the distance between the highest point of the shaped surface 11a is greater than the distance between the highest point of the protrusion 11d and the highest point of the first arc-shaped surface 11a.
  • the fourth arc segment On the other side of the line connecting the highest point of the convex portion 11d and the highest point of the first arc-shaped surface 11a, the fourth arc segment also curves toward the outer surface 10b, and the lowest point of the fourth arc segment The distance between the highest point of an arc-shaped surface 11a is greater than the distance between the highest point of the protrusion 11d and the highest point of the first arc-shaped surface 11a.
  • the bending directions of the first arc-shaped surface 11a, the second arc-shaped surface 11b and the third arc-shaped surface 11c are the same.
  • the top surface of the protrusion 11d facing the first arc surface 11a is a circular arc surface, and the top surface of the first arc surface 11a facing the protrusion is also a circular arc surface.
  • the chain link 10 further includes a recess 12 corresponding to the protrusion 11d.
  • the recess 12 is recessed from the outer surface 10 b of the link 10 toward the connection hole 11.
  • the recess 12 Since the recess 12 is provided, the area between the recess 12 and the protrusion 11d of the chain link 10 becomes thinner relative to other areas, so the elasticity of the area between the recess 12 and the protrusion 11d on the link 10 The deformability is better, so that the protrusion 11d is more easily deformed when subjected to an external force.
  • the chain link 10 has an arc-shaped structure as a whole, and the outer surface 10b and the inner surface 10a are both arc-shaped surfaces.
  • the bending directions of the first arcuate surface 11a, the second arcuate surface 11b and the third arcuate surface 11c are all directions from the inner surface 10a to the outer surface 10b.
  • the chain link 10 has a circular arc structure as a whole, and the outer surface 10b and the inner surface 10a are both circular arc surfaces.
  • the outer peripheral surface of the end portion 100 of this embodiment may be arc-shaped.
  • the outer surface 10b, the outer peripheral surface of the end 100, and the inner surface 10a are connected.
  • first locking hole 110 and the second locking hole 111 of the chain link 10 have the same structure, that is, the respective cross-sectional contours are the same.
  • first locking hole 110 and the second locking hole 111 are mirror images of each other, and they are arranged symmetrically with respect to the line connecting the highest point of the protrusion 11d and the highest point of the first arc-shaped surface 11a .
  • the chain link 10 includes a sheet 13.
  • the connecting hole 11 extends through the sheet body 13 in the thickness direction of the link 10 itself.
  • the chain link 10 includes more than two pieces 13, and the two or more pieces 13 are arranged along the axial direction of the connecting hole 11.
  • the connecting hole 11 extends through all the pieces 13 in the thickness direction of the link 10 itself.
  • connecting holes 11 of the chain link 10 may also be one. Of the two end portions 100 included in the chain link 10, only one end portion 100 may be provided with the connecting hole 11 of this embodiment, and the other end may be provided with a conventional structure such as a cylindrical hole.
  • FIG. 3 schematically shows the structure of the hinge 20 in an unfolded state of an embodiment of the present disclosure.
  • FIG. 4 shows an exploded structure of the hinge 20 in FIG. 3.
  • FIG. 5 schematically shows the structure of the hinge 20 of an embodiment of the present disclosure in a bent state.
  • an embodiment of the present disclosure provides a hinge 20 for a mobile terminal.
  • the hinge 20 of this embodiment includes four chain links 10 arranged in sequence and a connecting pin 30 for connecting the four chain links 10 in sequence. Two adjacent chain links 10 are rotatably connected using a connecting pin 30.
  • Each link 10 is provided with a connecting hole 11.
  • the chain link 10 of this embodiment includes two opposite ends 100. Each end 100 is provided with a connecting hole 11.
  • the respective ends 100 of two adjacent chain links 10 are stacked on each other, and the connecting holes 11 included in each are aligned with each other, so that the connecting pin 30 can be inserted into all the connecting holes 11 at the same time.
  • Each link 10 can rotate around the connecting pin 30 to switch between the expanded state and the bent state.
  • the two links 10 at both ends of the hinge 20 are used to connect with other structural members.
  • the two chain links 10 at both ends of the hinge 20 can be connected to other structural members through a connecting pin 30.
  • the connecting pin shaft 30 can switch between the first locking hole position 110 and the second locking hole position 111, and is limited to the first locking hole position 110 Or the second locking hole 111.
  • the connecting pin 30 is located at the first locking hole 110 and locked in the first locking hole 110, so that the chain link 10 is stably maintained in the expanded state.
  • the connecting pin 30 is located at the second locking hole 111 and locked in the second locking hole 111, so that the chain link 10 is stably maintained in the bent state .
  • the connecting pin 30 When the chain link 10 transitions from the unfolded state to the bent state, or from the bent state to the unfolded state, the connecting pin 30 needs to go over the narrowed area of the connecting hole 11 and move between the first locking hole 110 and the second locking hole 110 and the second locking hole. Switch between locking holes 111.
  • the connecting pin 30 can be positioned between the first locking hole 110 and the second locking hole 110. Move and switch between the stop holes 111, so that the axis of the connecting pin 30 in the first locking hole 110 is closer to the center of the link 10 than the axis of the connecting pin 30 in the second locking hole 111 area.
  • FIG. 6 schematically shows that the connecting pin 30 of an embodiment of the present disclosure is in the connecting state of the first locking hole 110.
  • FIG. 7 schematically shows the connecting state of the connecting pin 30 in the second locking hole 111 of an embodiment of the present disclosure.
  • the hinge 20 includes more than two connecting pins 30.
  • FIG. 8 schematically shows the total length L1 of all the chain links 10 in an expanded state of an embodiment of the present disclosure.
  • FIG. 9 schematically shows the total length L2 of all the chain links 10 in a bent state of an embodiment of the present disclosure.
  • the structural design of the link 10 and the connecting pin 30 of this embodiment can make the total length L1 of the hinge 20 in the unfolded state less than the total length L2 of all hinges 20 in the bent state.
  • each chain link 10 of this embodiment When all the chain links 10 of this embodiment are in the unfolded state, each chain link 10 is roughly arranged in a straight line, and the unfolded length and the folded length will not cause the hinge 20 in the unfolded state to have redundant length and wrinkle or appear. Curved situation.
  • the chain link 10 has a deformable protrusion 11d.
  • the connecting pin 30 applies stress to the protrusion 11d to elastically deform the protrusion 11d, ensuring that the connecting pin 30 can pass smoothly.
  • the size of the connecting pin 30 is greater than the size between the highest point of the convex portion 11d and the highest point of the first arc-shaped surface 11a, after the connecting pin 30 passes over the convex portion 11d, the convex portion 11d can face the connecting pin.
  • the shaft 30 forms a limit, so that the connecting pin shaft 30 is locked at the first locking hole 110 or the second locking hole 111.
  • the connecting pin 30 when the chain link 10 is switched between the expanded state and the bent state, can swing relative to the highest point of the first arc-shaped surface 11a, so as to set the position between the first locking hole 110 and the second locking hole 110 and the second Switch between locking holes 111.
  • the hinge 20 of the embodiment of the present disclosure includes a chain link 10 and a connecting pin 30.
  • the chain link 10 of this embodiment has a connecting hole 11.
  • the connecting hole 11 has a first locking hole 110 and a second locking hole 111 communicating with each other.
  • the connecting pin 30 can freely move and switch between the first locking hole 110 and the second locking hole 111.
  • the connecting pin 30 is locked in the first locking hole 110, the axis distance H1 of the two connecting pin 30 connected to the same chain link 10, and the connecting pin 30 is locked in the second lock
  • the hole 111 is stopped, the distance between the shaft centers of the two connecting pins 30 is H2, and the distance H1 is smaller than the distance H2.
  • the hinge 20 of the embodiment of the present disclosure has a simple overall structure, a small number of parts, low processing and assembly difficulty, and low production cost.
  • the hinge 20 of the embodiment of the present disclosure is applied to a mobile terminal with a flexible screen, since the hinge 20 will not be wrinkled or bent, it can reduce the damage of the structure of the flexible screen 60 caused by the local stress of the hinge 20 on the flexible screen. possibility.
  • the number of chain links 10 and the number of connecting pins 30 in this embodiment are not limited to those shown in the figure.
  • the number of chain links 10 can also be two, three, or more than five, and the number of connecting pins 30 used to connect each chain link 10 can also be one, two, or more than four.
  • the number of chain links 10 and the number of connecting pins 30 can be flexibly selected according to actual product requirements.
  • only one end 100 may be provided with the connecting hole 11 of this embodiment, and the other end may be provided with a conventional structure such as a cylindrical hole.
  • the end 100 provided with the connecting hole 11 of this embodiment is connected by the connecting pin 30 of this embodiment, and the end 100 provided with the cylindrical hole is connected by a cylindrical pin.
  • the first locking hole 110 and the second locking hole 111 of this embodiment have the same structure and are arranged symmetrically.
  • the structure of the first locking hole 110 and the second locking hole 111 are consistent, which is beneficial to improve the stability and smoothness of the switching process of the connecting pin 30 between the two, and reduce the jamming in the switching process
  • the possibility of noise or noise can also reduce the difficulty of processing and manufacturing the connecting hole 11.
  • a part of the connecting pin 30 in this embodiment is located in the first locking hole 110 or the second locking hole 111.
  • a part of the connecting pin 30 is located in the first locking hole 110, and the other part extends into the second locking hole 111.
  • the connecting pin 30 of this embodiment is locked in the second locking hole 111, a part of the connecting pin 30 is located in the second locking hole 111, and the other part extends into the first locking hole 110.
  • the part of the connecting pin 30 located in the first locking hole 110 or the second locking hole 111 matches the shape of the first locking hole 110 or the second locking hole 111 and can fit each other, thereby There is no play between the connecting pin 30 and the hole wall of the first locking hole 110 or the hole wall of the second locking hole 111, so that the connecting pin 30 is restricted and unable to be relative to the first locking hole.
  • the position 110 or the second locking hole position 111 shakes, which effectively improves the position stability of the connecting pin shaft 30, thereby improving the position stability of each chain link 10, and reducing the possibility of the chain link 10 shaking.
  • the cross-section of the connecting pin 30 of this embodiment is triangular, and the top and two bottom corners of the triangle are both arc transitions.
  • the outer peripheral surface of the connecting pin 30 can be closely attached to the first arc-shaped surface 11a and the third arc-shaped surface 11c corresponding to the first locking hole 110, or the first arc corresponding to the second locking hole 111
  • the shaped surface 11a and the second arcuate surface 11b closely fit.
  • the cross section of the connecting pin 30 is an isosceles triangle. It is easy to understand that the cross-sectional shape of the connecting pin 30 is not limited to the triangle shown in FIG. 4 or FIG. 6, but may also be a hexagonal shape that can achieve the same function. Similarly, the first locking hole needs to be ensured
  • the cross-sectional shape of the position 110 or the second locking hole 111 matches the cross-sectional shape of the connecting pin 30.
  • the chain link 10 of this embodiment has a concave portion 12 corresponding to the convex portion 11d.
  • the connecting pin 30 can more easily deform the protrusion 11d, so that the connecting pin 30 can pass the protrusion 11d more smoothly and with less effort.
  • the link 10 has an arc structure. Since the inner surface 10a and outer surface 10b of the chain link 10 are arc-shaped surfaces, when all the chain links 10 are in a bent state, the inner surface 10a and the outer surface 10b of each chain link 10 can be spliced to form a standard The arc surface can improve the aesthetic appearance of the hinge 20 on the one hand, and on the other hand can make the transition of various areas of the hinge 20 smooth.
  • the hinge 20 When the hinge 20 is applied to a mobile terminal using a flexible screen, the hinge 20 is not easy to cause local stress concentration on the flexible screen This results in damage to the flexible screen structure, and at the same time reduces the possibility of local stress concentration on the user's limbs and cause pain in the user's limbs, which is conducive to improving user-friendliness.
  • the hinge 20 of this embodiment further includes a first fixing bracket 40 and a second fixing bracket 50.
  • the two links 10 at both ends of the hinge 20 are connected to the first fixing bracket 40 and the second fixing bracket 50 respectively.
  • the hinge 20 can be detachably connected to other structural members through the first fixing bracket 40 and the second fixing bracket 50. In this way, the hinge 20 of this embodiment no longer needs to be directly connected and fixed with other structural parts through the chain link 10, thereby effectively protecting the chain link 10 and reducing the wear of the chain link 10.
  • the first fixing bracket 40 and the second fixing bracket 50 of this embodiment are provided with mounting holes matching the shape of the connecting pin 30. After the connecting pin 30 is plugged and connected to the mounting hole, the connecting pin 30 cannot rotate in the mounting hole.
  • the connecting pin 30 and the mounting hole of this embodiment may be an interference fit.
  • the first fixing bracket 40 and the second fixing bracket 50 can jointly drive each chain
  • the joint 10 rotates around the connecting pin 30, and the connecting pin 30 moves and switches between the second locking hole 111 and the first locking hole 110.
  • FIG. 10 schematically shows the structure of a hinge 20 according to another embodiment of the present disclosure.
  • FIG. 11 schematically shows the structure of a hinge 20 according to another embodiment of the present disclosure.
  • one chain link 10 includes a sheet 13, and the other adjacent chain link 10 includes two shafts along the connecting pin 30.
  • the sheets 13 are arranged at intervals.
  • One connecting pin 30 connects three chain links 10 at the same time.
  • each chain link 10 in two adjacent chain links 10, each chain link 10 includes two sheets 13 stacked in the axial direction of the connecting pin 30.
  • One connecting pin 30 connects four chain links 10 at the same time.
  • the number of sheets 13 included in one link 10 may be equal to or different from the number of sheets 13 included in the other link 10, so that it can be based on actual product requirements.
  • the number of sheets 13 can be flexibly selected.
  • Fig. 12 schematically shows the structure of a mobile terminal according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure also provides a mobile terminal.
  • the mobile terminal of this embodiment includes a flexible screen 60, a first supporting body 70, a second supporting body 80, and the hinge 20 as in the above embodiment. Both the first support body 70 and the second support body 80 of this embodiment are connected to the non-display surface of the flexible screen 60 to provide support for the flexible screen 60.
  • the two links 10 at both ends of the hinge 20 are respectively connected to the first support body 70 and the second support body 80. In an example, the two links 10 at both ends of the hinge 20 are directly connected to the first support body 70 and the second support body 80 respectively.
  • the two links 10 at both ends of the hinge 20 are indirectly connected to the first support body 70 and the second support body 80 through the first fixing bracket 40 and the second fixing bracket 50, respectively.
  • the first support body 70 and the second support body 80 can be close to or far away from each other to open or fold the flexible screen 60 and keep the chain link 10 in a bent state or an open position.
  • the hinge 20 included in the hinge 20 can ensure that the total length L1 of the hinge 20 in the unfolded state is less than the total length L2 of the hinge 20 in the bent state, so that the hinge 20 in the unfolded state will not be affected by its own length.
  • the redundancy leads to wrinkles or bending in the unfolded state, which reduces the possibility that the hinge 20 applies local stress to the flexible screen 60 and causes the structure of the flexible screen 60 to be damaged.
  • the hinge 20 of this embodiment has a simple structure and low processing and manufacturing difficulty, so that its own production cost is low, so that the overall production cost of the mobile terminal is low.

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Abstract

一种链节（10），包括至少一个连接孔（11），连接孔（11）包括相互连通的第一锁止孔位（110）以及第二锁止孔位（111），第一锁止孔位（110）和第二锁止孔位（111）的连通处收窄过渡。还涉及包括链节（10）的铰链（20），以及包括铰链（20）的移动终端。

Description

链节、铰链以及移动终端
相关申请的交叉引用
本申请主张在2019年3月4日在中国提交的中国专利申请号No.201910161013.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信设备技术领域，特别是涉及一种链节、铰链以及移动终端。
背景技术
随之科学技术的发展，移动电话和平板电脑等便携式电子设备越来越常见。目前，这些电子设备通常包括集成的显示设备，而且许多包括双显示器。例如，有些移动设备包括两个独立设置的显示设备。两个显示设备可以折叠或展开。但这样的设备形成的显示表面被分隔，视觉体验差，因此用户也希望能有更大的显示屏幕以便于查看。因此，显示器的制造商开始开发柔性显示器。柔性显示器可以用于提供更大的显示表面。然而，相关技术中，安装柔性屏的移动终端所使用的铰链结构复杂，影响移动终端生产成本。
发明内容
本公开实施例提供一种链节及铰链，以解决相关技术中铰链结构复杂，影响生产成本的问题。
为了解决上述技术问题，本公开是这样实现的：
第一方面，本公开实施例提出了一种链节，其包括：至少一个连接孔，连接孔包括相互连通的第一锁止孔位以及第二锁止孔位，第一锁止孔位和第二锁止孔位的连通处收窄过渡。
本实施例的链节具有连接孔。本公开实施例的链节整体结构简单，加工和装配难度低，生产成本低。这样，本公开实施例的链节应用于铰链时，能够保证铰链整体结构简单，零部件数量少，加工和装配难度低，生产成本低。
第二方面，根据本公开实施例提供一种铰链，其包括：两个以上的相继排布的链节以及连接销轴；相邻两个链节通过连接销轴转动连接，连接销轴在第一锁止孔位和第二锁止孔位之间切换并锁止于第一锁止孔位或第二锁止孔位；其中，铰链处于展开状态时，连接销轴锁止于第一锁止孔位，铰链处于弯折状态时，连接销轴锁止于第二锁止孔位；处于展开状态的铰链的总长度小于所有处于弯折状态的铰链的总长度。
根据本公开实施例提供的铰链，其包括链节以及连接销轴。本实施例的链节具有连接孔。该连接孔具有两个相互连通的第一锁止孔位和第二锁止孔位。在铰链展开或弯折的过程中，连接销轴能够自由地在第一锁止孔位和第二锁止孔位之间移动切换，同时相邻两个链节能够彼此相对错动，从而能够使得处于展开状态的铰链的总长度小于处于弯折状态的铰链的总长度，从而本实施例的处于展开状态的铰链不会存在长度冗余而出现褶皱或弯曲的情况。本公开实施例的铰链整体结构简单，零部件数量少，加工和装配难度低，生产成本低。本公开实施例的铰链应用于具有柔性屏的移动终端时，由于该铰链不会出现褶皱或弯曲的情况，从而能够降低铰链对柔性屏施加局部应力而导致柔性屏结构发生损坏的可能性。
第三方面，根据本公开实施例提供一种移动终端，其包括：
柔性屏、第一支撑体、第二支撑体以及如上述的铰链；第一支撑体和第二支撑体均与柔性屏相连接，铰链两端的两个链节分别与第一支撑体和第二支撑体相连接，铰链在展开状态和弯折状态切换时，第一支撑体和第二支撑体相互靠近或远离，以展开或弯折柔性屏。
本公开实施例的移动终端，其所包括的铰链能够保证铰链处于展开状态时的总长度小于铰链处于弯折状态时的总长度，从而铰链在展开状态不会由于自身长度冗余而导致在展开状态时出现褶皱或弯曲的情况，降低铰链对柔性屏施加局部应力而导致柔性屏结构发生损坏的可能性。同时本实施例的铰链结构简单、加工制造难度低，使得自身生产成本低，从而使得移动终端整体生产成本低。
附图说明
下面将通过参考附图来描述本公开示例性实施例的特征、优点和技术效果。
图1是本公开一实施例的链节的结构示意图；
图2是本公开另一实施例的链节的结构示意图；
图3是本公开一实施例的铰链处于展开位置的结构示意图；
图4是图3中铰链的分解结构示意图；
图5是本公开一实施例的铰链处于折叠位置的结构示意图；
图6是本公开一实施例的连接销轴处于第一锁止孔位的连接状态示意图；
图7是本公开一实施例的连接销轴处于第二锁止孔位的连接状态示意图；
图8是本公开一实施例的所有链节处于展开位置的总长度；
图9是本公开一实施例的所有链节处于折叠位置的总长度；
图10是本公开另一实施例的铰链的结构示意图；
图11是本公开又一实施例的铰链的结构示意图；
图12是本公开一实施例的移动终端的结构示意图。
在附图中，附图并未按照实际的比例绘制。
标记说明：
10、链节；10a、内侧表面；10b、外侧表面；100、端部；
11、连接孔；11a、第一弧形面；11b、第二弧形面；11c、第三弧形面；11d、凸起部；
110、第一锁止孔位；111、第二锁止孔位；
12、凹部；
13、片体；
20、铰链；
30、连接销轴；
40、第一固定支架；
50、第二固定支架；
60、柔性屏；
70、第一支撑体；
80、第二支撑体。
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。
在本公开的描述中，需要说明的是，除非另有说明，“多个”的含义是两个或两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本公开的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本公开中的具体含义。
为了更好地理解本公开，下面结合图1至图12对本公开实施例的技术方案进行描述。
图1示意性地显示了本公开一实施例的链节10的结构。参见图1所示，本实施例的链节10具有两个连接孔11。每个连接孔11包括相互连通的第一锁止孔位110和第二锁止孔位111。第一锁止孔位110和第二锁止孔位111的连通处收窄过渡。本实施例的链节10沿长度方向的两个端部100上分别设有一个连接孔。本实施例的链节10在长度方向上两边沿所在的内侧表面10a和外侧表面10b。内侧表面10a可以是曲面，也可以是平面。每个端部100设置有一个连接孔11。第一锁止孔位110相对于第二锁止孔位111靠近链节 10的中央区域，而第二锁止孔位111靠近端部100的边缘。即，在长度方向上，两个第一锁止孔位110之间的第一距离，小于两个第二锁止孔111之间的第二距离。第一距离是两个第一锁止孔位110中心之间的距离，也可以是两个第一锁止孔位110最接近的点之间的距离。第二距离同理。
在一个实施例中，连接孔11的孔壁包括第一弧形面11a、第二弧形面11b和第三弧形面11c。第一弧形面11a的两端分别与第二弧形面11b和第三弧形面11c平滑过渡连接。第一弧形面11a和第三弧形面11c形成第一锁止孔位110所对应的孔壁，而第一弧形面11a和第二弧形面11b形成第二锁止孔位111所对应的孔壁。第二弧形面11b和第三弧形面11c彼此相邻的两端平滑过渡连接，并且形成朝向第一弧形面11a凸出的凸起部11d。凸起部11d为可形变结构，从而凸起部11d受到外力作用时，凸起部11d自身可形变以使自身的最高点远离第一弧形面11a，从而与第一弧形面11a的距离变大。在第一锁止孔位110和第二锁止孔位111的连通处，凸起部11d的最高点和第一弧形面11a的最高点相对应。第一弧形面11a朝向凸起部11d弯曲。
在一个实施例中，第二弧形面11b包括第一圆弧段、与第一圆弧段相连接的第二圆弧段以及与第二圆弧段相连接的第一过渡段。第三弧形面11c包括第三圆弧段、与第三圆弧段相连接的第四圆弧段以及与第四圆弧段相连接的第二过渡段。第一圆弧段和第三圆弧段的两端平滑过渡连接共同形成凸起部11d。第一过渡段和第二过渡段分别与第一弧形面11a的两端相连接。在一个示例中，第一过渡段和第一弧形面11a之间为圆弧过渡连接，而第二过渡段和第一弧形面11a之间也为圆弧过渡连接。在凸起部11d的最高点和第一弧形面11a的最高点的连线的一侧，第二圆弧段朝外侧表面10b弯曲，而该第二圆弧段的最低点与第一弧形面11a的最高点的距离大于凸起部11d的最高点与第一弧形面11a的最高点的距离。在凸起部11d的最高点和第一弧形面11a的最高点的连线的另一侧，第四圆弧段也朝外侧表面10b弯曲，而该第四圆弧段的最低点与第一弧形面11a的最高点的距离大于凸起部11d的最高点与第一弧形面11a的最高点的距离。
在一个示例中，第一弧形面11a、第二弧形面11b和第三弧形面11c的弯曲方向相同。凸起部11d朝向第一弧形面11a的顶面为圆弧面，而第一弧形 面11a朝向凸起的顶面也为圆弧面。在一个示例中，链节10还包括与凸起部11d相对应设置的凹部12。该凹部12从链节10的外侧表面10b朝向连接孔11凹陷。由于设置凹部12，使得链节10上处于凹部12和凸起部11d之间的区域相对于其它区域变得更薄，因此链节10上处于凹部12和凸起部11d之间的区域的弹性变形能力更好，从而凸起部11d受外力作用时更加易于变形。
在一个实施例中，链节10整体呈弧形结构，而外侧表面10b和内侧表面10a均为弧形面。第一弧形面11a、第二弧形面11b和第三弧形面11c的弯曲方向均为从内侧表面10a至外侧表面10b的方向。可选地，链节10整体呈圆弧形结构，而外侧表面10b和内侧表面10a均为圆弧面。本实施例的端部100的外周面可以是圆弧形。外侧表面10b、端部100的外周面和内侧表面10a相连接。
在一个实施例中，链节10所具有的第一锁止孔位110和第二锁止孔位111彼此结构相同，也即各自的横截面轮廓相同。可选地，第一锁止孔位110和第二锁止孔位111互为镜像结构，两者相对于凸起部11d的最高点和第一弧形面11a的最高点的连线对称设置。
在一个实施例中，链节10包括一个片体13。连接孔11沿链节10自身的厚度方向延伸贯通片体13。在另一个实施例中，参见图2所示，链节10包括两个以上的片体13，两个以上的片体13沿连接孔11的轴向排布设置。连接孔11沿链节10自身的厚度方向延伸贯通所有片体13。
容易理解地，链节10所具有的连接孔11数量也可以是一个。在链节10所包括的两个端部100中，可以只在其中一个端部100上设置本实施例的连接孔11，另一端设置圆柱孔等常规结构。
图3示意性地显示了本公开一实施例的铰链20处于展开状态的结构。图4示出了图3中铰链20的分解结构。图5示意性地显示了本公开一实施例的铰链20处于弯折状态的结构。参见图3至图5所示，本公开实施例提供一种用于移动终端的铰链20。本实施例的铰链20包括依次排布的四个链节10以及用于将四个链节10依次连接的连接销轴30。相邻两个链节10使用一个连接销轴30可转动连接。每个链节10设置有连接孔11。本实施例的链节10包括相对的两个端部100。每个端部100设置有连接孔11。相邻两个链节10 中各自的端部100相互层叠，并且各自所包括的连接孔11相互对齐，以使连接销轴30能够同时插入所有的连接孔11。每个链节10能够围绕连接销轴30转动，以在展开状态和弯折状态之间切换。在本实施例中，铰链20两端的两个链节10用于与其它结构件相连接。本实施例中，铰链20两端的两个链节10可以通过连接销轴30与其它结构件相连接。
本实施例的链节10围绕连接销轴30转动时，连接销轴30能够在第一锁止孔位110和第二锁止孔位111之间切换，并限位于第一锁止孔位110或第二锁止孔位111。在链节10处于展开状态时，连接销轴30位于第一锁止孔位110并锁止于该第一锁止孔位110，以使链节10稳定地保持于展开状态。同样地，在链节10处于弯折状态时，连接销轴30位于第二锁止孔位111并锁止于该第二锁止孔位111，以使链节10稳定地保持于弯折状态。在链节10从展开状态向弯折状态过渡，或者，从弯折状态向展开状态过渡时，连接销轴30需要越过连接孔11的收窄区域而在第一锁止孔位110和第二锁止孔位111之间切换。本实施例中，由于相对于第二锁止孔位111，第一锁止孔位110更靠近链节10的中心区域，因此连接销轴30能够在第一锁止孔位110和第二锁止孔位111之间移动切换，使得处于第一锁止孔位110的连接销轴30的轴心比处于第二锁止孔位111的连接销轴30的轴心更靠近链节10的中央区域。
在一个实施例中，图6示意性地显示了本公开一实施例的连接销轴30处于第一锁止孔位110的连接状态。图7示意性地显示了本公开一实施例的连接销轴30处于第二锁止孔位111的连接状态。参见图6和图7所示，铰链20包括两个以上的连接销轴30。在连接销轴30锁止于第一锁止孔位110时，与同一个链节10相连接的两个连接销轴30的轴心间距H1，而在连接销轴30锁止于第二锁止孔位111时，两个连接销轴30的轴心间距H2。此时，间距H1小于间距H2。相对应地，在链节10从弯折状态过渡至展开状态过程中，相邻两个链节10会彼此相对错移运动。图8示意性地显示了本公开一实施例的所有链节10处于展开状态的总长度L1。图9示意性地显示了本公开一实施例的所有链节10处于弯折状态的总长度L2。这样，本实施例的链节10和连接销轴30的结构设计能够使得处于展开状态的铰链20的总长度L1小于所 有处于弯折状态的铰链20的总长度L2。本实施例的所有链节10处于展开状态时，各个链节10大致地沿一直线方向排列，不会由于展开长度与折叠长度相等而导致处于展开状态的铰链20存在长度冗余并出现褶皱或弯曲的情况。
在一个实施例中，链节10具有可形变的凸起部11d。连接销轴30越过凸起部11d时，连接销轴30会对凸起部11d施加应力以使凸起部11d发生弹性变形，保证连接销轴30能够顺利越过。由于连接销轴30的尺寸大于凸起部11d的最高点至第一弧形面11a的最高点之间的尺寸，因此连接销轴30越过凸起部11d后，凸起部11d能够对连接销轴30形成限位，从而将连接销轴30锁止于第一锁止孔位110或者第二锁止孔位111。在一个实施例中，链节10在展开状态和弯折状态之间切换时，连接销轴30能够相对第一弧形面11a的最高点摆动，以在第一锁止孔位110和第二锁止孔位111之间切换。
本公开实施例的铰链20，其包括的链节10以及连接销轴30。本实施例的链节10具有连接孔11。该连接孔11具有两个相互连通的第一锁止孔位110和第二锁止孔位111。在铰链20展开或弯折的过程中，连接销轴30能够自由地在第一锁止孔位110和第二锁止孔位111之间移动切换。在连接销轴30锁止于第一锁止孔位110时，与同一个链节10相连接的两个连接销轴30的轴心间距H1，而在连接销轴30锁止于第二锁止孔位111时，两个连接销轴30的轴心间距H2，并且间距H1小于间距H2。这样，使得处于展开状态的铰链20的总长度L1小于处于弯折状态的铰链20的总长度L2，从而本实施例的处于展开状态的铰链20不会存在长度冗余而出现褶皱或弯曲的情况。本公开实施例的铰链20整体结构简单，零部件数量少，加工和装配难度低，生产成本低。本公开实施例的铰链20应用于具有柔性屏的移动终端时，由于该铰链20不会出现褶皱或弯曲的情况，从而能够降低铰链20对柔性屏施加局部应力而导致柔性屏60结构发生损坏的可能性。
容易理解地，本实施例的链节10的数量和连接销轴30的数量均不局限于图中所示出的数量。链节10的数量还可以是两个、三个或五个以上，而用于将各个链节10连接的连接销轴30的数量还可以是一个、两个或四个以上。链节10的数量和连接销轴30的数量可以根据实际产品需求灵活选择。
在一个实施例中，在链节10所包括的两个端部100中，可以只在其中一 个端部100上设置本实施例的连接孔11，另一端设置圆柱孔等常规结构。设置有本实施例的连接孔11的端部100通过本实施例的连接销轴30相连接，而设置有圆柱孔的端部100通过圆柱销轴相连接。
本实施例的第一锁止孔位110和第二锁止孔位111结构相同并且对称设置。第一锁止孔位110和第二锁止孔位111两者的结构保持一致性，有利于提高连接销轴30在两者之间切换过程的平稳性和顺畅度，降低切换过程出现卡顿或噪音的可能性，另外也能够降低连接孔11的加工制造难度。
本实施例的连接销轴30的一部分位于第一锁止孔位110或第二锁止孔位111内。本实施例的连接销轴30锁止于第一锁止孔位110时，连接销轴30的一部分位于第一锁止孔位110，另一部分伸入第二锁止孔位111。同样地，本实施例的连接销轴30锁止于第二锁止孔位111时，连接销轴30的一部分位于第二锁止孔位111，另一部分伸入第一锁止孔位110。连接销轴30位于第一锁止孔位110或第二锁止孔位111内的部分与第一锁止孔位110或第二锁止孔位111的形状相匹配并且能够相互贴合，从而连接销轴30与第一锁止孔位110的孔壁或者第二锁止孔位111的孔壁之间不存在游隙，使得连接销轴30受到限制约束而无法相对于第一锁止孔位110或第二锁止孔位111发生晃动，有效提升连接销轴30的位置稳定性，进而提升各个链节10的位置稳定性，降低链节10发生晃动的可能性。
一并参见图4和图6所示，本实施例的连接销轴30的横截面呈三角形，并且三角形的顶角和两个底角均为圆弧过渡。连接销轴30的外周表面能够与第一锁止孔位110对应的第一弧形面11a和第三弧形面11c紧密贴合，或者，与第二锁止孔位111对应的第一弧形面11a和第二弧形面11b紧密贴合。可选地，连接销轴30的横截面为等腰三角形。容易理解地，连接销轴30的横截面形状并不限于图4中或图6示出的三角形，也可以是六边形等能够实现相同功能的形状，同样地，需要保证第一锁止孔位110或第二锁止孔位111的横截面形状与连接销轴30的横截面形状相匹配。
参见图6所示，本实施例的链节10具有与凸起部11d相对应设置的凹部12。在连接销轴30越过时，连接销轴30能够更容易地使该凸起部11d发生变形，从而连接销轴30更加顺利地且更加省力地越过凸起部11d。
在一个实施例中，链节10呈弧形结构。由于链节10的内侧表面10a和外侧表面10b均呈圆弧形面，因此在所有链节10均处于弯折状态时，各个链节10的内侧表面10a和外侧表面10b均能够拼接形成标准的圆弧面，从而一方面能够提升铰链20外观美感，另一方面能够使得铰链20各个区域过渡光滑，在铰链20应用于使用柔性屏的移动终端时，铰链20不易使柔性屏上出现局部应力集中而导致柔性屏结构损坏，同时也降低对用户肢体产生局部应力集中而导致用户肢体产生疼痛感的可能性，有利于提升用户使用友好度。
参见图3所示，本实施例的铰链20还包括第一固定支架40和第二固定支架50。铰链20两端的两个链节10分别与第一固定支架40和第二固定支架50相连接。铰链20可以通过第一固定支架40和第二固定支架50与其它结构件可拆卸连接。这样，本实施例的铰链20不再需要通过链节10直接与其它结构件连接固定，从而有效保护链节10，降低链节10磨损。本实施例的第一固定支架40和第二固定支架50上设置有与连接销轴30形状相匹配的安装孔。连接销轴30与安装孔插接连接后，连接销轴30无法在安装孔内转动。本实施例的连接销轴30与安装孔可以为过盈配合。在对第一固定支架40和第二固定支架50施加外力而使得第一固定支架40和第二固定支架50相互靠近或远离时，第一固定支架40和第二固定支架50能够共同带动各个链节10围绕连接销轴30转动，同时连接销轴30在第二锁止孔位111和第一锁止孔位110之间移动切换。
图10示意性地显示了本公开另一实施例的铰链20的结构。图11示意性地显示了本公开又一实施例的铰链20的结构。在一个实施例中，参见图9所示，相邻的两个链节10中，一个链节10包括一个片体13，相邻的另一个链节10包括两个沿连接销轴30的轴向间隔设置的片体13。一个连接销轴30同时连接三个链节10。在另一个实施例中，参见图10所示，相邻的两个链节10中，每个链节10包括两个沿连接销轴30的轴向层叠设置的片体13。一个连接销轴30同时连接四个链节10。容易理解地，相邻的两个链节10中，一个链节10所包括的片体13数量可以与另一个链节10所包括的片体13数量相等或不等，从而可以根据实际产品需求灵活选择片体13的数量。
图12示意性地显示了本公开一实施例的移动终端的结构。参见图12所 示，本公开实施例还提供一种移动终端。本实施例的移动终端包括柔性屏60、第一支撑体70、第二支撑体80以及如上述实施例的铰链20。本实施例的第一支撑体70和第二支撑体80均与柔性屏60的非显示面相连接，以用于为柔性屏60提供支撑力。铰链20两端的两个链节10分别与第一支撑体70和第二支撑体80相连接。在一个示例中，铰链20两端的两个链节10分别与第一支撑体70和第二支撑体80直接连接。在另一个示例中，铰链20两端的两个链节10分别通过第一固定支架40和第二固定支架50与第一支撑体70和第二支撑体80间接连接。第一支撑体70和第二支撑体80能够相互靠近或远离，以打开或折叠柔性屏60并且使链节10保持于弯折状态或打开位置。
本公开实施例的移动终端，其所包括的铰链20能够保证铰链20处于展开状态时的总长度L1小于铰链20处于弯折状态时的总长度L2，从而铰链20在展开状态不会由于自身长度冗余而导致在展开状态时出现褶皱或弯曲的情况，降低铰链20对柔性屏60施加局部应力而导致柔性屏60结构发生损坏的可能性。同时本实施例的铰链20结构简单、加工制造难度低，使得自身生产成本低，从而使得移动终端整体生产成本低。
虽然已经参考可选实施例对本公开进行了描述，但在不脱离本公开的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件，尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本公开并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (13)

  1. 一种链节，包括：
    至少一个连接孔，所述连接孔包括相互连通的第一锁止孔位以及第二锁止孔位，所述第一锁止孔位和所述第二锁止孔位的连通处收窄过渡。
  2. 根据权利要求1所述的链节，其中，所述链节沿长度方向的两个端部均分别设有一个所述连接孔，两个所述第一锁止孔位之间的第一距离，小于两个所述第二锁止孔之间的第二距离。
  3. 根据权利要求1所述的链节，其中，所述第一锁止孔位与所述第二锁止孔位彼此结构相同。
  4. 根据权利要求1所述的链节，其中，所述链节呈弧形结构。
  5. 根据权利要求1所述的链节，其中，所述链节包括一个片体；或者，所述链节包括两个以上片体，两个以上所述片体沿所述连接孔的轴向排布设置。
  6. 根据权利要求1至5任一项所述的链节，其中，所述连接孔的孔壁包括第一弧形面、第二弧形面和第三弧形面，所述第一弧形面的两端分别与所述第二弧形面和所述第三弧形面平滑过渡连接，所述第二弧形面和所述第三弧形面彼此相邻的两端平滑过渡连接并且形成朝向所述第一弧形面凸出的凸起部，所述凸起部为可形变结构，所述凸起部和所述第一弧形面之间对应的区域为收窄过渡区域，所述第一弧形面、所述第二弧形面和所述第三弧形面的弯曲方向相同。
  7. 根据权利要求6所述的链节，还包括与所述凸起部相对应设置的凹部，所述凹部从所述链节的外侧表面朝向所述凸起部凹陷。
  8. 根据权利要求6所述的链节，其中，所述凸起部朝向所述第一弧形面的顶面为圆弧面，所述第一弧形面朝向所述凸起部的顶面为圆弧面。
  9. 一种铰链，包括如权利要求1至8任一项所述的链节以及连接销轴；
    所述链节的数量大于两个，两个以上所述链节相继排布；
    相邻两个所述链节通过所述连接销轴转动连接，所述连接销轴在所述第一锁止孔位和所述第二锁止孔位之间切换并锁止于所述第一锁止孔位或所述 第二锁止孔位；
    其中，所述铰链处于展开状态时，所述连接销轴锁止于所述第一锁止孔位，所述铰链处于弯折状态时，所述连接销轴锁止于所述第二锁止孔位；处于所述展开状态的所述铰链的总长度小于处于所述弯折状态的所述铰链的总长度。
  10. 根据权利要求9所述的铰链，其中，所述连接销轴的横截面呈三角形，并且所述三角形的顶角和两个底角均为圆弧过渡。
  11. 根据权利要求10所述的铰链，其中，所述连接销轴的横截面为等腰三角形。
  12. 根据权利要求9至11任一项所述的铰链，还包括第一固定支架和第二固定支架，所述铰链两端的两个链节分别与所述第一固定支架和所述第二固定支架相连接。
  13. 一种移动终端，包括：
    柔性屏、第一支撑体、第二支撑体以及如权利要求9至12任一项所述的铰链；
    所述第一支撑体和所述第二支撑体均与所述柔性屏相连接，所述铰链两端的两个所述链节分别与所述第一支撑体和所述第二支撑体相连接，所述铰链在所述展开状态和所述弯折状态切换时，所述第一支撑体和所述第二支撑体相互靠近或远离，以展开或弯折所述柔性屏。
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