WO2023083039A1 - 折叠铰链和电子设备 - Google Patents

折叠铰链和电子设备 Download PDF

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Publication number
WO2023083039A1
WO2023083039A1 PCT/CN2022/128648 CN2022128648W WO2023083039A1 WO 2023083039 A1 WO2023083039 A1 WO 2023083039A1 CN 2022128648 W CN2022128648 W CN 2022128648W WO 2023083039 A1 WO2023083039 A1 WO 2023083039A1
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WO
WIPO (PCT)
Prior art keywords
swing arm
folding
base
gear
folding hinge
Prior art date
Application number
PCT/CN2022/128648
Other languages
English (en)
French (fr)
Inventor
詹强
钟鼎
花蕾蕾
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020247011004A priority Critical patent/KR20240049395A/ko
Publication of WO2023083039A1 publication Critical patent/WO2023083039A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C7/00—Holding-devices for laces
    • A43C7/04—Hinged devices
    • 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
    • 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 field of mobile terminals, in particular to a folding hinge and electronic equipment including the folding hinge.
  • a foldable electronic device usually includes two housings, a folding hinge and a flexible screen.
  • the two housings are respectively connected to both sides of the folding hinge, and the two housings can be opened and closed relative to each other under the action of the folding hinge.
  • the flexible screen is located on the same side of the two housings and the folding hinge, and the flexible screen is connected to the housing so as to be folded or unfolded during the relative opening and closing of the two housings. In the state where the folding hinge is flattened, the flexible screen is flattened on the surfaces of the two casings and the folding hinge.
  • Embodiments of the present disclosure provide a folding hinge and an electronic device, which can overcome problems in related technologies, and the technical solution is as follows:
  • an embodiment of the present disclosure provides a folding hinge, which includes a base and two folding assemblies, the two folding assemblies are located on both sides of the base, and the two folding assemblies are connected to The bases are connected and can be relatively opened and closed.
  • the folding assembly includes a first swing arm, a second swing arm, a synchronous gear and a support member; the first swing arm is pivotally connected to the base; the second swing arm is pivotally connected to the base, and The pivot axis of the second swing arm and the base is parallel to the pivot axis of the first swing arm and the base; the synchronous gear is located in the base, and the first swing arm It is connected with the second swing arm through the synchronous gear transmission; the support is pivotally connected with the first swing arm, and the support is also linked with the second swing arm. Under the action of the second swing arm, it rotates relative to the first swing arm.
  • the supporting member is used to provide support for the flexible screen.
  • both the first swing arm and the second swing arm are pivotally connected to the base, both the first swing arm and the second swing arm can rotate relative to the base. Since the first swing arm and the second swing arm are connected through the synchronous gear transmission, when any one of the first swing arm and the second swing arm rotates relative to the base, the other Both will also rotate relative to the base under the action of the synchronous gear.
  • the support member is driven by the second swing arm, so that the support member rotates relative to the first swing arm, that is to say, the support member will follow As the first swing arm rotates relative to the base, it will rotate relative to the first swing arm.
  • the transmission between the first swing arm and the second swing arm is carried out through the synchronous gear, which has a simple structure, is convenient to manufacture, and has low cost.
  • the transmission ratio of the synchronous gear to the first swing arm is smaller than the transmission ratio of the synchronous gear to the second swing arm.
  • the rotation angle of the first swing arm will be greater than the rotation angle of the second swing arm, so that the support member swings relative to the first swing arm.
  • the arms rotate at a certain angle, so that the support members of the two folding assemblies are relatively inclined, and define a drop-shaped space with the base.
  • first swing arm and the second swing arm are spaced apart in a direction parallel to the axis of the synchronous gear.
  • the first swing arm includes a first main body part and a first gear part, and the first gear part is located on a side of the first main body part close to the second swing arm.
  • the second swing arm includes a second body part and a second gear part, and the second gear part is located on a side of the second body part close to the first swing arm.
  • the synchronous gear is located between the first main body part and the second main body part, and meshes with the first gear part and the second gear part.
  • the first swing arm when the first swing arm rotates, it can drive the synchronous gear to rotate, and then the synchronous gear can drive the second swing arm to rotate.
  • the movement of the first swing arm and the second swing arm is stable and the movement precision is high.
  • the diameter of the first gear part is smaller than the diameter of the second gear part. Therefore, the transmission ratio between the synchronous gear and the first gear part is smaller than the transmission ratio between the synchronous gear and the second gear part.
  • the orthographic projections of the first gear portion and the second gear portion on a plane perpendicular to the synchronous gear axis at least partially overlap.
  • the first gear part and the second gear part close together, the positive plane between the first gear part and the second gear part on the plane perpendicular to the axis of the synchronous gear
  • the projections overlap at least partially, so that the overall structure of the folding hinge is more compact.
  • the distance between the axes of the synchronous gears of the two folding assemblies is smaller than the distance between the first swing arms of the two folding assemblies and the pivot axis of the base, and is smaller than two The distance between the second swing arm of the folding assembly and the pivot axis of the base. It is beneficial to reduce the volume of the base, so that the size of the folding hinge can be designed smaller and the structure is more compact.
  • the synchronizing gears of the two folding assemblies mesh. Based on the above features, by engaging the two synchronous gears, the two folding assemblies can move synchronously during the process of folding and unfolding the two folding assemblies.
  • the first swing arm further includes a first end cam, the first end cam is located on the side of the first main body away from the first gear part, the first end cam is connected to the first gear part.
  • the first gear part is coaxially arranged.
  • the folding hinge further includes a damping mechanism, the damping mechanism is located in the base, and is located on the side of the first body part away from the first gear part, and the damping mechanism is connected with the first end face cam The end face away from the first main body part fits.
  • the damping mechanism cooperates with the first end face cam to provide resistance to the first swing arm and hinder the rotation of the first swing arm.
  • the damping mechanism When folding is performed by an external force, the external force received by the first swing arm exceeds the resistance exerted by the damping mechanism on the first swing arm, and the first swing arm can rotate. After the external force is removed, the resistance provided by the damping mechanism hinders the rotation of the first swing arm, so that the first swing arm can remain at the current position, preventing the electronic device from closing or unfolding by itself under the action of gravity.
  • the damping mechanism includes a second end face cam and an elastic member.
  • the second end cam is located at an end of the first end cam away from the first main body, and the second end cam is arranged coaxially with the first end cam.
  • the elastic member is located at an end of the second end cam away from the first end cam, and the elastic member is used to provide elastic force to make the second end cam contact with the first end cam.
  • the supporting member includes a plate body and an arc-shaped arm, and the arc-shaped arm is located on a side of the plate body close to the first swing arm, and is located on the side of the first swing arm, so One end of the arc-shaped arm is connected to the board, and the other end extends away from the base.
  • the side wall of the first swing arm close to the arc-shaped arm has an arc-shaped slot, and the arc-shaped arm is located in the arc-shaped slot and can slide along the arc-shaped slot.
  • the support member can rotate around the axis of the arc slot relative to the first swing arm.
  • the pivot connection is realized by the cooperation of the arc arm and the arc slot, both of the arc arm and the arc slot are arc-shaped, and the pivot axis is located at the arc arm or the arc slot.
  • the support member further includes a driving part, the driving part and the arc-shaped arm are located on the same surface of the board, and the driving part is located on the side of the second swing arm, so
  • the driving part has a driving groove, and the driving groove is located on a side of the driving part close to the second swing arm.
  • the side wall of the second swing arm has a driving protrusion, and the driving protrusion is located on a side of the second swing arm close to the driving part, and partly located in the driving slot.
  • the driving protrusion contacts the side wall of the driving groove, and presses the side wall of the driving groove, pushing the driving part , make the support member rotate around the pivot axis of the support member and the first swing arm, so that the support member is driven by the second swing arm, and the support member and the second swing arm linkage.
  • the embodiment of the present disclosure also provides an electronic device, the electronic device includes a folding hinge, a first casing, a second casing and a flexible screen, and the folding hinge is any one of the folding hinges described in the first aspect.
  • a folding hinge, the first housing is connected to the first swing arm of one folding assembly in the folding hinge, and the second housing is connected to the first swing arm of the other folding assembly in the folding hinge , the flexible screen is located on the same side of the folding hinge, the first casing and the second casing, and is connected to the first casing and the second casing.
  • the support member during the process of opening and closing the first housing and the second housing, the support member will undergo a double-rotational movement, and the support member will be opposite to each other along with the first swing arm.
  • the base When the base rotates, it will rotate relative to the first swing arm.
  • the relative position of the support member and the first swing arm will change, so that when the two folding components are closed, the two support members present a certain angle, which is different from the
  • the base encloses a drop-shaped space to accommodate the flexible screen.
  • the transmission between the first swing arm and the second swing arm is carried out through the synchronous gear, which has a simple structure, is convenient to manufacture, and has low cost.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • Fig. 4 is a schematic structural diagram of a folding hinge provided by an embodiment of the present disclosure.
  • Fig. 5 is a schematic structural diagram of a folding hinge provided by an embodiment of the present disclosure.
  • Fig. 6 is a partially enlarged schematic diagram in Fig. 5;
  • Fig. 7 is a top view of the folding hinge shown in Fig. 6;
  • Fig. 8 is a schematic diagram of the movement of a folding hinge provided by an embodiment of the present disclosure.
  • Fig. 9 is a sectional view of I-I in Fig. 7;
  • Fig. 10 is a schematic structural diagram of a first swing arm provided by an embodiment of the present disclosure.
  • Fig. 11 is a schematic diagram of a partial structure of a folding hinge provided by an embodiment of the present disclosure.
  • Fig. 12 is a schematic structural view of a support provided by an embodiment of the present disclosure.
  • Fig. 13 is the II-II sectional view in Fig. 7;
  • Fig. 14 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • Words such as “comprises” or “comprising” and similar terms mean that the elements or items listed before “comprising” or “comprising” include the elements or items listed after “comprising” or “comprising” and their equivalents, and do not exclude other component or object.
  • Words such as “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Up”, “Down”, “Left”, “Right” and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • the electronic device may be, but not limited to, a mobile phone, a tablet computer, a display, or a notebook computer.
  • the electronic device includes a folding hinge 100 , a first housing 200 , a second housing 300 and a flexible screen 400 .
  • the flexible screen 400 is located on the same side of the folding hinge 100 , the first housing 200 and the second housing 300 , and the flexible screen 400 is connected with the first housing 200 and the second housing 300 .
  • the first housing 200 and the second housing 300 can be opened and closed relative to each other.
  • the flexible screen 400 is flat on the folding hinge 100 , the first housing 200 and the second housing. 300 surface; when the first housing 200 and the second housing 300 are relatively closed, the flexible screen 400 is folded between the first housing 200 and the second housing 300 .
  • the electronic device further includes a bottom plate 500 .
  • Fig. 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • FIG. 2 shows the folded state of the electronic device.
  • the bottom plate 500 is located at the bottom of the folding hinge 100 .
  • the bottom plate 500 is exposed between the first case 200 and the second case 300 , forming a part of the outer surface of the electronic device.
  • Fig. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure. In FIG. 3 , the electronic device is in a half-folded state, that is, a state between the folded state and the unfolded state. As shown in FIG.
  • the bottom plate 500 is retracted between the first housing 200 and the second housing 300 driven by the folding hinge 100 .
  • the bottom plate 500 is concealed between the first shell 200 and the second shell 300 .
  • Fig. 4 is a schematic structural diagram of a folding hinge provided by an embodiment of the present disclosure.
  • the folding hinge includes a base 110 and two folding components 120 .
  • Two folding assemblies 120 are located on two sides of the base 110 , and the two folding assemblies 120 are connected to the base 110 and can be opened and closed relative to each other.
  • One of the two folding assemblies 120 is used to connect with the first casing 200, and the other of the two folding assemblies 120 is used to connect to the second casing 300.
  • the two folding assemblies 120 are relatively close together, The first casing 200 and the second casing 300 are driven relatively close together.
  • FIG. 5 is a schematic structural diagram of a folding hinge provided by an embodiment of the present disclosure.
  • FIG. 6 is a partially enlarged schematic diagram of FIG. 5 .
  • the folding assembly 120 includes a first swing arm 121 , a second swing arm 122 , a synchronous gear 123 and a support member 124 .
  • Fig. 7 is a top view of the folding hinge shown in Fig. 6 . At least the base 110 and the support 124 are omitted in FIG. 7 . As shown in FIG. 7 , the first swing arm 121 is pivotally connected to the base 110 , and FIG. 7 shows the pivot axis m 1 of the first swing arm 121 and the base 110 .
  • the second swing arm 122 is pivotally connected to the base 110 , and the pivot axis m 2 of the first swing arm 121 and the base 110 is shown in FIG. 7 .
  • the pivot axis m 2 of the second swing arm 122 and the base 110 is parallel to the pivot axis m 1 of the first swing arm 121 and the base 110 .
  • the synchronous gear 123 is located in the base 110, and the synchronous gear 123 drives and connects the first swing arm 121 and the second swing arm 122, so that when the first swing arm 121 rotates around the pivot axis m1 , the second swing arm can be driven by the synchronous gear 123.
  • the arm 122 rotates about the pivot axis m 2 .
  • the support member 124 is pivotally connected to the first swing arm 121 , and the pivot axis m 3 of the support member 124 and the first swing arm 121 is shown in FIG. 7 .
  • the support member 124 is linked with the second swing arm 122 , and the support member 124 can rotate relative to the first swing arm 121 under the action of the second swing arm 122 .
  • the first swing arm 121 rotates
  • the first swing arm 121 drives the synchronous gear 123 to rotate
  • the synchronous gear 123 drives the second swing arm 122 to rotate
  • the support member 124 rotates around the pivot axis m under the action of the second swing arm 122 3 turn.
  • the supporting member 124 is used to provide support for the flexible screen 400 .
  • the support members 124 of the two folding assemblies 120 are coplanar to support the flexible screen 400 in the flattened state.
  • both the first swing arm 121 and the second swing arm 122 are pivotally connected to the base 110 , both the first swing arm 121 and the second swing arm 122 can rotate relative to the base 110 .
  • the first swing arm 121 and the second swing arm 122 are transmission-connected by the synchronous gear 123, so when one of the first swing arm 121 and the second swing arm 122 rotates relative to the base 110, the synchronous gear 123 can drive the first swing arm 123 to rotate.
  • the other of the first swing arm 121 and the second swing arm 122 also rotates relative to the base 110 .
  • the support member 124 is pivotally connected to the first swing arm 121 , and during the rotation of the second swing arm 122 , the support member 124 is driven by the second swing arm 122 so that the support member 124 rotates relative to the first swing arm 121 .
  • the arm 121 rotates. This makes the relative position of the support member 124 and the first swing arm 121 change before and after folding, so that when the two folding components 120 are closed, the two support members 124 can present a certain angle.
  • the transmission between the first swing arm 121 and the second swing arm 122 is carried out through the synchronous gear 123 , which has a simple structure, is convenient to manufacture, and has low cost.
  • the transmission ratio between the synchronous gear 123 and the first swing arm 121 is smaller than the transmission ratio between the synchronous gear 123 and the second swing arm 122 .
  • the folding hinge changes from the unfolded state to the folded state, the angle at which the first swing arm 121 rotates is greater than the angle at which the second swing arm 122 rotates, and the relative positions of the first swing arm 121 and the second swing arm 122 change. While the support member 124 is pivotally connected to the first swing arm 121 , when the position of the second swing arm 122 relative to the first swing arm 121 changes, the support member 124 rotates relative to the first swing arm 121 .
  • Fig. 8 is a schematic diagram of the movement of a folding hinge provided by an embodiment of the present disclosure.
  • the folding hinge changes from the unfolded state to the closed state, the first swing arm 121 rotates at an angle of ⁇ 1 , and the second swing arm 122 rotates at an angle of ⁇ 3 , due to the rotation of the second swing arm 122
  • the angle is small, so that the support member 124 rotates relative to the first swing arm 121, and the two support members 124 are inclined to each other.
  • the two support members 124 and the base 110 form a space similar to the shape of a water drop to accommodate the flexible screen.
  • the folding part makes the folding part of the flexible screen bend into a drop shape.
  • the first swing arm 121 and the second swing arm 122 are spaced apart in a direction parallel to the axis m 4 of the synchronous gear 123 .
  • the first swing arm 121 includes a first main body portion 1211 and a first gear portion 1212 , the first gear portion 1212 is located on a side of the first main body portion 1211 close to the second swing arm 122 .
  • the second swing arm 122 includes a second main body portion 1221 and a second gear portion 1222 , and the second gear portion 1222 is located on a side of the second main body portion 1221 close to the first swing arm 121 .
  • the synchronous gear 123 is located between the first main body part 1211 and the second main body part 1221 , and meshes with the first gear part 1212 and the second gear part 1222 .
  • the first gear part 1212 of the first swing arm 121 and the second gear part 1222 of the second swing arm 122 mesh with the synchronous gear 123, so that when the first swing arm 121 rotates, the synchronous gear 123 can be driven to rotate, and then the synchronous The gear 123 drives the second swing arm 122 to rotate.
  • the transmission is carried out by gears, the structure is compact, the transmission is stable, the efficiency is high, and the reliability is high.
  • the diameter of the first gear part 1212 is smaller than the diameter of the second gear part 1222, so that the transmission ratio between the synchronous gear 123 and the first gear part 1212 is smaller than the transmission ratio between the synchronous gear 123 and the second gear part 1222 .
  • the first swing arm 121 , the second swing arm 122 , and the synchronous gear 123 may be connected to the base 110 through pin shafts.
  • the first swing arm 121 is connected to the base 110 through a first pin shaft 131 .
  • the first main body portion 1211 of the first swing arm 121 has a first connection hole, and the first connection hole is arranged coaxially with the first gear portion 1212 .
  • the first pin shaft 131 is installed in the base 110, and the first connecting hole is sleeved outside the first pin shaft 131, so that the first swing arm 121 can rotate around the first pin shaft 131, and during the rotation, the first gear
  • the part 1212 also rotates around its own axis to drive the synchronous gear 123 .
  • the second swing arm 122 is connected to the base 110 through the second pin shaft 132 .
  • the second pin shaft 132 is located on the side of the second main body portion 1221 of the second swing arm 122 away from the second gear portion 1222 , and the second pin shaft 132 is connected with the base 110 so that the second swing arm 122 can rotate around the second pin shaft. 132 turns.
  • One of the second pin shaft 132 and the second main body 1221 and the base 110 is a clearance fit, and the other is a transition fit or an integrated structure.
  • the second body part 1221 has a second connection hole
  • the second pin shaft 132 is clearance fit with the second connection hole
  • the second pin shaft 132 is integrated with the base 110 , or is arranged on the base 110
  • the second pin shaft 132 is integrated with the second main body 1221, and an insertion hole is provided on the base 110, and the second pin shaft 132 is inserted in the insertion hole, and the second pin shaft 132 is connected to the insertion hole. Hole clearance fit.
  • the synchronous gear 123 can be connected with the base 110 through the third pin shaft 133 .
  • the third pin shaft 133 is installed in the base 110 , the synchronous gear 123 has an axial through hole, and the synchronous gear 123 is sheathed outside the third pin shaft 133 through the axial through hole.
  • the third pin shaft 133 is loosely matched with the axial through hole, so that the synchronous gear 123 can rotate relative to the third pin shaft 133 .
  • the distance between the axis m 4 of the synchronous gear 123 of the two folding assemblies 120 is smaller than the distance between the first swing arm 121 of the two folding assemblies 120 and the pivot axis m 1 of the base 110 , and is also smaller than the distance between the two The distance between the second swing arm 122 of the first folding assembly 120 and the pivot axis m 2 of the base 110.
  • the distance between the third pin shafts 133 of the two folding assemblies 120 is smaller than the distance between the second pin shafts 132 of the two folding assemblies 120 and also smaller than the first pin shafts of the two folding assemblies 120
  • the distance between 131 is beneficial to reduce the volume of the base 110, so that the size of the folding hinge can be designed to be smaller.
  • Fig. 9 is an I-I sectional view in Fig. 7 .
  • the orthographic projections of the first gear portion 1212 and the second gear portion 1222 on a plane perpendicular to the axis of the synchronous gear 123 at least partially overlap.
  • the first gear part 1212 and the second gear part 1222 are staggered in a direction parallel to the axis of the synchronous gear 123 , and interact through the synchronous gear 123 .
  • the first swing arm 121 and the second swing arm 122 are arranged, it only needs that the first gear part 1212 and the second gear part 1222 can mesh with the synchronous gear 123 .
  • the orthographic projections of the two on a plane perpendicular to the axis of the synchronous gear 123 partially overlap, so that the overall structure of the folding hinge is more compact , so that the size of the folding hinge can be designed smaller.
  • the synchronous gears 123 of the two folding assemblies 120 are meshed. By engaging the two synchronous gears 123 , the two folding assemblies 120 can move synchronously during the process of closing and unfolding the folding assemblies 120 .
  • Fig. 10 is a schematic structural diagram of a first swing arm provided by an embodiment of the present disclosure.
  • the first swing arm 121 further includes a first end face cam 1213 .
  • the first end face cam 1213 is located on a side of the first body portion 1211 away from the first gear portion 1212 .
  • the first end face cam 1213 is arranged coaxially with the first gear part 1212 .
  • Fig. 11 is a schematic diagram of a partial structure of a folding hinge provided by an embodiment of the present disclosure.
  • the folding hinge further includes a damping mechanism 140 .
  • the damping mechanism 140 is located in the base 110 , and the damping mechanism 140 is located on a side of the first body part 1211 away from the first gear part 1212 .
  • the damping mechanism 140 cooperates with the end surface of the first end cam 1213 away from the first main body portion 1211 .
  • the electronic device is usually folded by a user applying an external force.
  • the damping mechanism 140 can provide damping during the folding process, so that after the user removes the external force, the electronic device can maintain the shape when the external force is removed.
  • the damping provided by the damping mechanism 140 keeps the folding hinge in an unfolded state, so that the electronic device is in an unfolded state.
  • the damping provided by the damping mechanism 140 keeps the folding hinge in the closed state, so that the electronic device is in the folded state and will not unfold itself under the influence of gravity or the like.
  • the electronic device When the two folding components 120 are in a state between fully unfolded and closed, the electronic device is in a half-expanded state, for example, the flexible screen 400 is folded at 90°, and the external force is removed at this time, and the damping provided by the damping mechanism 140 can also keep the folding hinge. in the half-expanded state.
  • the damping mechanism 140 cooperates with the first end cam 1213 to provide resistance to the first swing arm 121 and hinder the rotation of the first swing arm 121 .
  • the external force received by the first swing arm 121 exceeds the resistance applied by the damping mechanism 140 to the first swing arm 121 , and the first swing arm 121 can rotate.
  • the first swing arm 121 remains at the current position, so that the electronic device maintains the shape when the external force is removed.
  • the damping mechanism 140 includes a second end cam 1401 and an elastic member 1402 .
  • the second end cam 1401 is located at an end of the first end cam 1213 away from the first main body 1211 , and the first end cam 1213 and the second end cam 1401 are coaxially arranged.
  • the elastic member 1402 is located at the end of the second end cam 1401 away from the first end cam 1213 , and the elastic member 1402 is used to provide elastic force to make the second end cam 1401 contact with the first end cam 1213 .
  • the second end cam 1401 is sleeved outside the first pin shaft 131 , the second end cam 1401 can move along the axial direction of the first pin shaft 131 , and the second end cam 1401 and the first pin shaft 131 are circumferentially locked. stop, so that the second end face cam 1401 cannot rotate in the circumferential direction relative to the first pin shaft 131 .
  • a second end cam 1401 and an elastic member 1402 are respectively provided.
  • the two second end cams 1401 are sleeved on the two first pin shafts 131 respectively, and the two second end cams 1401 are connected. Since the two second end cams 1401 are sleeved on two different pin shafts, connecting the two second end cams 1401 can limit the two second end cams 1401 in the circumferential direction, so that the second end cams 1401 is circumferentially locked with the first pin shaft 131 .
  • the elastic member 1402 is a spring, and the spring is sleeved on the outside of the first pin shaft 131 .
  • the damping mechanism 140 may further include a snap ring 1403 , the snap ring 1403 is sleeved on the first pin shaft 131 , and the spring is located between the second end face cam 1401 and the snap ring 1403 .
  • the spring is axially limited by the snap ring 1403 to prevent the spring from loosening.
  • Fig. 12 is a schematic structural diagram of a support provided by an embodiment of the present disclosure.
  • the supporting member 124 includes a plate body 1241 and an arc-shaped arm 1242 .
  • the arc arm 1242 is located on a side of the plate body 1241 close to the first swing arm 121 , and the arc arm 1242 is located on a side of the first swing arm 121 .
  • One end of the arc arm 1242 is connected to the board body 1241 , and the other end of the arc arm 1242 extends away from the base 110 .
  • the first swing arm 121 has an arc groove 1211 a near the side wall of the arc arm 1242 , the arc arm 1242 is located in the arc groove 1211 a, and the arc arm 1242 can slide along the arc groove 1211 a.
  • the first main body 1211 of the first swing arm 121 is L-shaped, one end of the first main body 1211 is pivotally connected to the base 110 , and the arc-shaped groove 1211a is located on the end surface of the other end of the first main body 1211 .
  • the support member 124 can rotate relative to the first swing arm 121 around the axis of the arc-shaped slot 1211a, that is, the pivot axis m 3 .
  • rods such as pin shafts are usually used for pivot connection, and the pivot axis coincides with the axis of the pin shaft, so the position of the pivot axis is limited by the position of the pin shaft.
  • the pivot connection is realized by the cooperation of the arc-shaped arm 1242 and the arc-shaped slot 1211a.
  • the arc arm 1242 and the arc groove 1211a are arc-shaped, and the pivot axis is located at the axis of the arc arm 1242 or the arc groove 1211a.
  • the position of the connecting axis is not limited to structures such as pin shafts, and the layout is more flexible.
  • the supporting member 124 further includes a driving part 1243 .
  • the driving part 1243 and the arc arm 1242 are located on the same surface of the plate body 1241 , and the driving part 1243 is located on the side of the second swing arm 122 .
  • the driving part 1243 has a driving groove 1243a, and the driving groove 1243a is located on a side of the driving part 1243 close to the second swing arm 122 .
  • the driving part 1243 is located on the side of the arc-shaped arm 1242 close to the second swing arm 122, that is, between the second swing arm 122 and the arc-shaped arm 1242, so that the first swing arm 121, the second swing arm 122 and support 124 are more compact.
  • the driving portion 1243 is located on a side of the pivot axis m 3 between the support member 124 and the first swing arm 121 close to the base 110 .
  • the two The two support members 124 will be relatively close together in a figure-eight shape.
  • the sidewall of the second swing arm 122 has a driving protrusion 1223 .
  • the driving protrusion 1223 is located on a side of the second swing arm 122 close to the driving portion 1243 .
  • Fig. 13 is a II-II sectional view in Fig. 7 . As shown in FIG. 13, the driving protrusion 1223 is partially located in the driving groove 1243a.
  • one end of the second main body 1221 of the second swing arm 122 is pivotally connected to the base 110, and the driving protrusion 1223 is located at the other end of the second main body 1221, that is, the second main body 1221 is located away from the base. 110 at one end.
  • the driving protrusion 1223 is cylindrical, and one end of the driving protrusion 1223 is connected with the second main body 1221 .
  • the driving protrusion 1223 is parallel to the pivot axis m 2 of the second swing arm 122 and the base 110 .
  • the driving protrusion 1223 contacts the side wall of the driving groove 1243a, and presses the side wall of the driving groove 1243a, pushing the driving part 1243, so that the support member 124 rotates around the pivot axis m 3 turn.
  • the driving protrusion 1223 is located at the end of the driving slot 1243 a away from the base 110 .
  • the driving protrusion 1223 is located at an end of the driving slot 1243 a close to the base 110 .
  • the electronic device also includes a top plate 150, the top plate 150 is located at the top of the top plate 150, and connected to the base 110, the top plate 150 can play a role of shielding and protection, and the base 110 and its internal structure Shielding also prevents external sundries from entering the base 110 and affecting the normal operation of the folding hinge 100 .
  • the top plate 150 can also provide a plane area, which is beneficial for supporting the flexible screen 400 .
  • Fig. 14 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • the electronic device includes a folding hinge 100 , a first casing 200 , a second casing 300 and a flexible screen 400 .
  • the folding hinge 100 is any one of the folding hinges shown in FIGS. 1 to 13 .
  • the first housing 200 is connected to the first swing arm 121 of one folding assembly 120 in the folding hinge 100
  • the second housing 300 is connected to the first swing arm 121 of the other folding assembly 120 in the folding hinge 100 .
  • the flexible screen 400 is located on the same side of the folding hinge 100 , the first housing 200 and the second housing 300 , and is connected to the first housing 200 and the second housing 300 .
  • the support member 124 will undergo a double-rotation movement, that is, the support member 124 will not only rotate with the first swing arm 121 relative to the base 110, but also rotate relative to the base 110.
  • the first swing arm 121 rotates. This makes the relative position of the support member 124 and the first swing arm 121 change before and after folding, so that when the two folding components 120 are closed, the two support members 124 can present a certain angle.
  • the transmission between the first swing arm 121 and the second swing arm 122 is carried out through the synchronous gear 123 , which has a simple structure, is convenient to manufacture, and has low cost.
  • the electronic device includes two folding hinges 100, and the bases 110 of the two folding hinges 100 are connected as a whole.
  • the support 124 of the folding assembly 120 close to the first housing 200 is connected as a whole
  • the support 124 of the folding assembly 120 close to the second housing 300 is connected as a whole, so that the two The movements of the 100 folding hinges are more synchronized.
  • the number of folding hinges 100 in the electronic device can be set according to the size of the electronic device. For electronic devices with smaller size, fewer folding hinges 100 can be provided, for example, one or two folding hinges 100 can be provided. For larger electronic devices, more folding hinges 100 may be provided, for example, three or more folding hinges 100 may be provided.

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  • General Engineering & Computer Science (AREA)
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  • Telephone Set Structure (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

本公开实施例公开了一种折叠铰链和电子设备，属于移动终端领域。该折叠铰链包括基座和两个折叠组件，两个折叠组件位于基座的两侧，且均与基座相连，并能够相对开合；折叠组件包括第一摆臂、第二摆臂、同步齿轮和支撑件；第一摆臂与基座枢接；第二摆臂与基座枢接；同步齿轮位于基座中，传动连接第一摆臂和第二摆臂；支撑件与第一摆臂枢接，且与第二摆臂联动，能够在第二摆臂的作用下，相对第一摆臂转动。两个折叠组件在相对合拢的过程中，支撑件会发生双旋运动，能够使两个折叠组件在合拢时，两个支撑件能呈现出一定的夹角。第一摆臂和第二摆臂之间通过同步齿轮进行传动，结构简单，方便制作，且成本较低。

Description

折叠铰链和电子设备
本申请要求于2021年11月09日提交的申请号为202111322650.4、发明名称为“折叠铰链和电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及移动终端领域，特别涉及一种折叠铰链和包括该折叠铰链的电子设备。
背景技术
随着技术的发展，电子设备的用途越来越广泛，已经成为了人们日常生活和工作中重要的工具。可折叠的电子设备因占用空间小，携带方便而受到人们的青睐。
可折叠的电子设备通常包括两个壳体、折叠铰链和柔性屏，两个壳体分别连接在折叠铰链的两侧，两个壳体在折叠铰链的作用下能够相对开合。柔性屏位于两个壳体和折叠铰链的同一侧，柔性屏与壳体相连，从而在两个壳体相对开合的过程中折叠或展开。在折叠铰链展平的状态下，柔性屏展平在两个壳体和折叠铰链表面。
为了在折叠状态下有足够的空间容纳柔性屏的弯折部位，防止柔性屏受损，折叠铰链折叠后会形成一个截面呈水滴形的空间。相关技术中，为了使折叠铰链折叠后形成截面呈水滴形的空间，折叠铰链的结构通常比较复杂。
发明内容
本公开实施例提供了一种折叠铰链和电子设备，能够克服相关技术中的问题，所述技术方案如下：
第一方面，本公开实施例提供了一种折叠铰链，该折叠铰链包括基座和两个折叠组件，两个所述折叠组件位于所述基座的两侧，两个所述折叠组件均与所述基座相连，并且能够相对开合。所述折叠组件包括第一摆臂、第二摆臂、同步齿轮和支撑件；所述第一摆臂与所述基座枢接；所述第二摆臂与所述基座枢接，且所述第二摆臂与所述基座的枢接轴线平行于所述第一摆臂与所述基座的枢接轴线；所述同步齿轮位于所述基座中，所述第一摆臂和所述第二摆臂通过所述同步齿轮传动连接；所述支撑件与所述第一摆臂枢接，所述支撑件还与所述第二摆臂联动，所述支撑件能够在所述第二摆臂的作用下，相对所述第一摆臂转动。所述支撑件用于为柔性屏提供支撑。两个所述折叠组件相对展开时，两个所述折叠组件的所述支撑件共面。
基于上述特征，由于所述第一摆臂和所述第二摆臂均与所述基座枢接，因此所述第一摆臂和所述第二摆臂均能够相对所述基座转动。由于所述第一摆臂和所述第二摆臂通过所述同步齿轮传动连接，因此所述第一摆臂和所述第二摆臂中的任意一个相对所述基座转动时，另一个均会在所述同步齿轮的作用下也相对所述基座转动。
在所述第二摆臂转动的过程中，由所述第二摆臂带动所述支撑件，使得所述支撑件相对所述第一摆臂转动，也就是说，所述支撑件既会随着所述第一摆臂一起相对所述基座转动， 又会相对所述第一摆臂转动。使得两个所述折叠组件在合拢时，两个所述支撑件能呈现出一定的夹角。所述第一摆臂和所述第二摆臂之间通过所述同步齿轮进行传动，结构简单，方便制作，且成本较低。
可选地，所述同步齿轮与所述第一摆臂的传动比，小于所述同步齿轮与所述第二摆臂的传动比。
基于上述特征，在两个所述折叠组件相对合拢的过程中，所述第一摆臂转动的角度会大于所述第二摆臂转动的角度，从而使得所述支撑件相对所述第一摆臂转动一定的角度，使得两个所述折叠组件的所述支撑件相对倾斜，与所述基座限定出水滴形的空间。
在一些示例中，所述第一摆臂和所述第二摆臂在平行于所述同步齿轮的轴线的方向上间隔布置。所述第一摆臂包括第一主体部和第一齿轮部，所述第一齿轮部位于所述第一主体部靠近所述第二摆臂的一侧。所述第二摆臂包括第二主体部和第二齿轮部，所述第二齿轮部位于所述第二主体部靠近所述第一摆臂的一侧。所述同步齿轮位于所述第一主体部和所述第二主体部之间，与所述第一齿轮部和所述第二齿轮部啮合。
基于上述特征，在所述第一摆臂转动时，能够带动所述同步齿轮转动，再由所述同步齿轮带动所述第二摆臂转动。通过齿轮传动，使所述第一摆臂和所述第二摆臂运动平稳，且运动精度高。
示例性地，所述第一齿轮部的直径小于所述第二齿轮部的直径。从而使得所述同步齿轮与所述第一齿轮部的传动比小于所述同步齿轮与所述第二齿轮部的传动比。
可选地，所述第一齿轮部和所述第二齿轮部在垂直于所述同步齿轮轴线的平面上的正投影至少部分重叠。
基于上述特征，通过将所述第一齿轮部和所述第二齿轮部布置的较近，所述第一齿轮部和所述第二齿轮部在垂直于所述同步齿轮轴线的平面上的正投影至少有部分区域重叠，使得所述折叠铰链的整体结构更加紧凑。
可选地，两个所述折叠组件的所述同步齿轮的轴线的间距，小于两个所述折叠组件的所述第一摆臂与所述基座的枢接轴线的间距，且小于两个所述折叠组件的所述第二摆臂与所述基座的枢接轴线的间距。有利于减小所述基座的体积，使所述折叠铰链的尺寸能够设计的更小，结构更紧凑。
在一些示例中，两个所述折叠组件的所述同步齿轮啮合。基于上述特征，通过使两个所述同步齿轮啮合，使得在合拢和展开两个所述折叠组件的过程中，两个所述折叠组件能够同步运动。
在一些示例中，所述第一摆臂还包括第一端面凸轮，所述第一端面凸轮位于所述第一主体部远离所述第一齿轮部的一侧，所述第一端面凸轮与所述第一齿轮部同轴布置。
所述折叠铰链还包括阻尼机构，所述阻尼机构位于所述基座中，且位于所述第一主体部远离所述第一齿轮部的一侧，所述阻尼机构与所述第一端面凸轮远离所述第一主体部的端面配合。
基于上述特征，所述阻尼机构通过与所述第一端面凸轮进行配合，向所述第一摆臂提供阻力，阻碍所述第一摆臂的转动。在通过外力进行折叠时，所述第一摆臂受到的外力超过了所述阻尼机构施加在所述第一摆臂的阻力，所述第一摆臂能够发生转动。在撤去外力后，所述阻尼机构提供的阻力阻碍所述第一摆臂的转动，使得所述第一摆臂能够保持在当前的位置， 避免电子设备在重力的作用下自行合拢或展开。
可选地，所述阻尼机构包括第二端面凸轮和弹性件。所述第二端面凸轮位于所述第一端面凸轮远离所述第一主体部的一端，且所述第二端面凸轮与所述第一端面凸轮同轴布置。所述弹性件位于所述第二端面凸轮远离所述第一端面凸轮的一端，所述弹性件用于提供弹力，使所述第二端面凸轮与所述第一端面凸轮接触。
基于上述结构，在所述第一摆臂转动时，所述第一端面凸轮和所述第二端面凸轮发生相对转动。在所述弹性件的弹力作用下，所述第二端面凸轮与所述第一端面凸轮相抵，使所述第一端面凸轮和所述第二端面凸轮保持在相对稳定的位置，从而避免电子设备在重力等因素的情况下自发的开合。
在一些示例中，所述支撑件包括板体和弧形臂，所述弧形臂位于所述板体靠近所述第一摆臂的一面，且位于所述第一摆臂的侧方，所述弧形臂的一端与所述板体相连，另一端沿远离所述基座的方向延伸。所述第一摆臂靠近所述弧形臂的侧壁具有弧形槽，所述弧形臂位于所述弧形槽中，且能够沿所述弧形槽滑动。
基于上述特征，通过所述弧形臂和所述弧形槽的配合，使得所述支撑件能够绕所述弧形槽的轴线相对所述第一摆臂转动。
利用所述弧形臂和所述弧形槽的配合实现枢接，所述弧形臂和所述弧形槽均呈圆弧形，枢接轴线位于所述弧形臂或所述弧形槽的轴线处，改变所述弧形臂和所述弧形槽的半径，能够改变枢接轴线的位置，使所述支撑件的布置更加灵活。
在一些示例中，所述支撑件还包括驱动部，所述驱动部和所述弧形臂位于所述板体的同一面，且所述驱动部位于所述第二摆臂的侧方，所述驱动部具有驱动槽，所述驱动槽位于所述驱动部靠近所述第二摆臂的一侧。所述第二摆臂的侧壁具有驱动凸起，所述驱动凸起位于所述第二摆臂靠近所述驱动部的一侧，且部分位于所述驱动槽中。
基于上述特征，在所述第二摆臂相对所述基座转动时，所述驱动凸起与所述驱动槽的侧壁接触，并挤压所述驱动槽的侧壁，推动所述驱动部，使所述支撑件绕所述支撑件与所述第一摆臂的枢接轴线转动，从而通过所述第二摆臂带动所述支撑件，使所述支撑件与所述第二摆臂联动。
第二方面，本公开实施例还提供了一种电子设备，该电子设备包括折叠铰链、第一壳体、第二壳体和柔性屏，所述折叠铰链为如第一方面所述的任一种折叠铰链，所述第一壳体与所述折叠铰链中的一个折叠组件的第一摆臂相连，所述第二壳体与所述折叠铰链中的另一个折叠组件的第一摆臂相连，所述柔性屏位于所述折叠铰链、所述第一壳体和所述第二壳体的同一侧，且与所述第一壳体和所述第二壳体相连。
基于上述特征，在开合所述第一壳体和所述第二壳体的过程中，所述支撑件会发生双旋运动，所述支撑件既会随着所述第一摆臂一起相对所述基座转动，又会相对所述第一摆臂转动。在折叠前后，所述支撑件和所述第一摆臂的相对位置会发生变化，能够使两个所述折叠组件在合拢时，两个所述支撑件呈现出一定的夹角，与所述基座围成水滴形的空间容纳柔性屏。所述第一摆臂和所述第二摆臂之间通过所述同步齿轮进行传动，结构简单，方便制作，且成本较低。
附图说明
图1是本公开实施例提供的一种电子设备的结构示意图；
图2是本公开实施例提供的一种电子设备的结构示意图；
图3是本公开实施例提供的一种电子设备的结构示意图；
图4是本公开实施例提供的一种折叠铰链的结构示意图；
图5是本公开实施例提供的一种折叠铰链的结构示意图；
图6是图5中的局部放大示意图；
图7是图6所示折叠铰链的俯视图；
图8是本公开实施例提供的一种折叠铰链的运动简图；
图9是图7中的Ⅰ-Ⅰ截面图；
图10是本公开实施例提供的一种第一摆臂的结构示意图；
图11是本公开实施例提供的一种折叠铰链的局部结构示意图；
图12是本公开实施例提供的一种支撑件的结构示意图；
图13是图7中的Ⅱ-Ⅱ截面图；
图14是本公开实施例提供的一种电子设备的结构示意图。
图例说明
100、折叠铰链
110、基座
120、折叠组件 121、第一摆臂 1211、第一主体部 1211a、弧形槽 1212、第一齿轮部 1213、第一端面凸轮
122、第二摆臂 1221、第二主体部 1222、第二齿轮部 1223、驱动凸起
123、同步齿轮
124、支撑件 1241、板体 1242、弧形臂 1243、驱动部 1243a、驱动槽
131、第一销轴 132、第二销轴 133、第三销轴
140、阻尼机构 1401、第二端面凸轮 1402、弹性件 1403、卡环
150、顶板
200、第一壳体 300、第二壳体 400、柔性屏 500、底板
具体实施方式
本公开的实施方式部分使用的术语仅用于对本公开的实施例进行解释，而非旨在限定本公开。除非另作定义，本公开的实施方式使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”、“第三”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则所述相对位置关系也可能相应地 改变。
图1是本公开实施例提供的一种电子设备的结构示意图，该电子设备可以是但不限于是手机、平板电脑、显示器、笔记本电脑。
如图1所示，该电子设备包括折叠铰链100、第一壳体200、第二壳体300和柔性屏400。柔性屏400位于折叠铰链100、第一壳体200和第二壳体300的同一侧，且柔性屏400与第一壳体200和第二壳体300相连。
第一壳体200和第二壳体300能够相对开合，第一壳体200和第二壳体300展开时，柔性屏400平摊在折叠铰链100、第一壳体200和第二壳体300表面；第一壳体200和第二壳体300相对合拢时，柔性屏400被折叠在第一壳体200和第二壳体300之间。
如图1所示，该电子设备还包括底板500。图2是本公开实施例提供的一种电子设备的结构示意图。图2中所示为电子设备的折叠状态，如图2所示状态，底板500位于折叠铰链100的底部。在折叠状态下，底板500从第一壳体200和第二壳体300之间露出，形成电子设备的外表面的一部分。图3是本公开实施例提供的一种电子设备的结构示意图。图3中电子设备处于半折叠状态，即处于折叠状态和展开状态之间的形态。如图3所示，底板500在折叠铰链100的带动下，缩入第一壳体200和第二壳体300之间。当第一壳体200和第二壳体300处于展开状态时，参见图1所示状态，底板500隐匿在第一壳体200和第二壳体300之间。
图4是本公开实施例提供的一种折叠铰链的结构示意图。如图4所示，该折叠铰链包括基座110和两个折叠组件120。两个折叠组件120位于基座110的两侧，且两个折叠组件120均与基座110相连，并能够相对开合。两个折叠组件120中的一个用于与第一壳体200相连，两个折叠组件120中的另一个用于与第二壳体300相连，在折叠过程中，两个折叠组件120相对靠拢，带动第一壳体200和第二壳体300相对靠拢。
图5是本公开实施例提供的一种折叠铰链的结构示意图。图6是图5中的局部放大示意图。如图5和图6所示，折叠组件120包括第一摆臂121、第二摆臂122、同步齿轮123和支撑件124。
图7是图6所示折叠铰链的俯视图。图7中至少省略了基座110和支撑件124。如图7所示，第一摆臂121与基座110枢接，图7中示出了第一摆臂121与基座110的枢接轴线m 1。
第二摆臂122与基座110枢接，图7中示出了第一摆臂121与基座110的枢接轴线m 2。第二摆臂122与基座110的枢接轴线m 2平行于第一摆臂121与基座110的枢接轴线m 1。
同步齿轮123位于基座110中，同步齿轮123传动连接第一摆臂121和第二摆臂122，使得第一摆臂121绕枢接轴线m 1转动时，能够通过同步齿轮123带动第二摆臂122绕枢接轴线m 2转动。
支撑件124与第一摆臂121枢接，图7中示出了支撑件124与第一摆臂121的枢接轴线m 3。支撑件124与第二摆臂122联动，支撑件124能够在第二摆臂122的作用下，相对第一摆臂121转动。在第一摆臂121转动时，第一摆臂121带动同步齿轮123转动，再由同步齿轮123带动第二摆臂122转动，支撑件124在第二摆臂122的作用下绕枢接轴线m 3转动。
支撑件124用于为柔性屏400提供支撑。两个折叠组件120相对展开时，两个折叠组件 120的支撑件124共面，以支撑展平状态的柔性屏400。
本公开实施例中，由于第一摆臂121和第二摆臂122均与基座110枢接，因此第一摆臂121和第二摆臂122均能够相对基座110转动。又由于第一摆臂121和第二摆臂122通过同步齿轮123传动连接，因此在第一摆臂121和第二摆臂122中的一个相对基座110转动时，能够通过同步齿轮123带动第一摆臂121和第二摆臂122中的另一个也相对基座110转动。支撑件124与第一摆臂121枢接，在第二摆臂122转动的过程中，由第二摆臂122带动支撑件124，使得支撑件124相对第一摆臂121转动。这就使得两个折叠组件120在相对合拢的过程中，支撑件124会发生双旋运动，即支撑件124既会随着第一摆臂121一起相对基座110转动，又会相对第一摆臂121转动。这就使得在折叠前后，支撑件124和第一摆臂121的相对位置会发生变化，能够使两个折叠组件120在合拢时，两个支撑件124能呈现出一定的夹角。第一摆臂121和第二摆臂122之间通过同步齿轮123进行传动，结构简单，方便制作，且成本较低。
在本公开实施例中，同步齿轮123与第一摆臂121的传动比，小于同步齿轮123与第二摆臂122的传动比。
也就是说，在第一摆臂121转动，带动同步齿轮123和第二摆臂122一起转动时，若第一摆臂121转动角度为α 1，同步齿轮123转动角度为α 2，第二摆臂122转动角度为α 3，则α 2/α 1＜α 2/α 3。由此可以得出，α 3＜α 1。折叠铰链从展开的状态变为合拢的状态，第一摆臂121转动的角度大于第二摆臂122转动的角度，第一摆臂121和第二摆臂122的相对位置会发生变化。而支撑件124与第一摆臂121是枢接的，第二摆臂122相对第一摆臂121的位置发生变化时，也就使得支撑件124相对第一摆臂121发生转动。
图8是本公开实施例提供的一种折叠铰链的运动简图。如图8所示，折叠铰链从展开的状态变为合拢的状态，第一摆臂121转动的角度为α 1，第二摆臂122转动的角度为α 3，由于第二摆臂122转动的角度较小，使得支撑件124相对第一摆臂121发生转动，两个支撑件124呈现相互倾斜的状态，两个支撑件124与基座110围成类似水滴形状的空间，以容纳柔性屏的折叠部分，使柔性屏的折叠部分弯折呈水滴状。
如图7所示，第一摆臂121和第二摆臂122在平行于同步齿轮123的轴线m 4的方向上间隔布置。第一摆臂121包括第一主体部1211和第一齿轮部1212，第一齿轮部1212位于第一主体部1211靠近第二摆臂122的一侧。第二摆臂122包括第二主体部1221和第二齿轮部1222，第二齿轮部1222位于第二主体部1221靠近第一摆臂121的一侧。同步齿轮123位于第一主体部1211和第二主体部1221之间，与第一齿轮部1212和第二齿轮部1222啮合。
第一摆臂121的第一齿轮部1212和第二摆臂122的第二齿轮部1222通过与同步齿轮123啮合，使得在第一摆臂121转动时，能够带动同步齿轮123转动，再由同步齿轮123带动第二摆臂122转动。通过齿轮进行传动，结构紧凑，传动稳定且效率高，可靠性高。
本公开实施例中，第一齿轮部1212的直径小于第二齿轮部1222的直径，以使得同步齿轮123与第一齿轮部1212的传动比，小于同步齿轮123与第二齿轮部1222的传动比。
第一摆臂121、第二摆臂122、同步齿轮123可以通过销轴与基座110相连。例如图7所示，第一摆臂121通过第一销轴131与基座110相连。第一摆臂121的第一主体部1211具有第一连接孔，第一连接孔与第一齿轮部1212同轴布置。第一销轴131安装在基座110中，第一连接孔套设在第一销轴131外，使得第一摆臂121能够绕第一销轴131转动，并且在转动 过程中，第一齿轮部1212也绕自身的轴线自转，以带动同步齿轮123。
第二摆臂122通过第二销轴132与基座110相连。第二销轴132位于第二摆臂122的第二主体部1221远离第二齿轮部1222的一侧，第二销轴132与基座110相连，使得第二摆臂122能够绕第二销轴132转动。第二销轴132与第二主体部1221、基座110中的一个为间隙配合，另一个为过渡配合或者为一体结构。
例如，在一些示例中，第二主体部1221具有第二连接孔，第二销轴132与第二连接孔间隙配合，第二销轴132与基座110为一体结构，或者在基座110设置有插孔，第二销轴132插设在插孔中，与插孔间隙配合或者过盈配合。在另一些示例中，第二销轴132与第二主体部1221为一体结构，在基座110设置有插孔，第二销轴132插设在插孔中，且第二销轴132与插孔间隙配合。
同步齿轮123可以通过第三销轴133与基座110相连。第三销轴133安装在基座110中，同步齿轮123具有轴向通孔，同步齿轮123通过轴向通孔套设在第三销轴133外。第三销轴133与轴向通孔间隙配合，以使同步齿轮123能够相对第三销轴133转动。
如图7所示，两个折叠组件120的同步齿轮123的轴线m 4的间距，小于两个折叠组件120的第一摆臂121与基座110的枢接轴线m 1的间距，也小于两个折叠组件120的第二摆臂122与基座110的枢接轴线m 2的间距。
本公开实施例中，两个折叠组件120的第三销轴133之间的间距小于两个折叠组件120的第二销轴132之间的间距，也小于两个折叠组件120的第一销轴131之间的间距，有利于减小基座110的体积，使折叠铰链的尺寸能够设计的更小。
图9是图7中的Ⅰ-Ⅰ截面图。如图9所示，第一齿轮部1212和第二齿轮部1222在垂直于同步齿轮123轴线的平面上的正投影至少部分重叠。
第一齿轮部1212和第二齿轮部1222在平行于同步齿轮123轴线的方向上是错开的，通过同步齿轮123相互作用。在布置第一摆臂121和第二摆臂122时，第一齿轮部1212和第二齿轮部1222能够与同步齿轮123啮合即可。本公开实施例中，通过将第一齿轮部1212和第二齿轮部1222布置的较近，使得两者在垂直于同步齿轮123轴线的平面上的正投影部分重叠，使得折叠铰链整体结构更紧凑，使折叠铰链的尺寸能够设计的更小。
如图9所示，两个折叠组件120的同步齿轮123啮合。通过使两个同步齿轮123啮合，使得在合拢和展开折叠组件120的过程中，两个折叠组件120能够同步运动。
图10是本公开实施例提供的一种第一摆臂的结构示意图。如图10所示，第一摆臂121还包括第一端面凸轮1213。第一端面凸轮1213位于第一主体部1211远离第一齿轮部1212的一侧。第一端面凸轮1213与第一齿轮部1212同轴布置。
图11是本公开实施例提供的一种折叠铰链的局部结构示意图。如图11所示，该折叠铰链还包括阻尼机构140。阻尼机构140位于基座110中，且阻尼机构140位于第一主体部1211远离第一齿轮部1212的一侧。阻尼机构140与第一端面凸轮1213远离第一主体部1211的端面配合。
电子设备在使用过程中，通常由使用者施加外力进行折叠。阻尼机构140能够在折叠过程中提供阻尼，使得在使用者撤去外力后，电子设备能够保持在外力撤去时的形态。例如在两个折叠组件120完全展开后，阻尼机构140提供的阻尼使折叠铰链保持在展开的状态，从而使电子设备处于展开的状态。在两个折叠组件120合拢后，阻尼机构140提供的阻尼使折 叠铰链保持在合拢的状态，从而使电子设备处于折叠的状态，不会在重力等的影响下自行展开。在两个折叠组件120处于完全展开和合拢之间的状态时，电子设备处于半展开状态，例如柔性屏400折叠呈90°，此时撤去外力，阻尼机构140提供的阻尼也能够使折叠铰链保持在半展开状态。
阻尼机构140通过与第一端面凸轮1213进行配合，向第一摆臂121提供阻力，阻碍第一摆臂121的转动。在通过外力进行折叠时，第一摆臂121受到的外力超过了阻尼机构140施加在第一摆臂121的阻力，第一摆臂121能够发生转动。在撤去外力后，在阻尼机构140提供的阻力的作用下，使第一摆臂121保持在当前的位置，从而使电子设备保持在外力撤去时的形态。
如图11所示，阻尼机构140包括第二端面凸轮1401和弹性件1402。第二端面凸轮1401位于第一端面凸轮1213远离第一主体部1211的一端，第一端面凸轮1213和第二端面凸轮1401同轴布置。弹性件1402位于第二端面凸轮1401远离第一端面凸轮1213的一端，弹性件1402用于提供弹力，使得第二端面凸轮1401与第一端面凸轮1213接触。
本公开实施例中，第二端面凸轮1401套设在第一销轴131外，第二端面凸轮1401能够沿第一销轴131的轴向移动，第二端面凸轮1401与第一销轴131周向锁止，使得第二端面凸轮1401无法相对第一销轴131周向转动。
示例性地，本公开实施例中，对应两个折叠组件120的第一摆臂121，分别设置有第二端面凸轮1401和弹性件1402。两个第二端面凸轮1401分别套在两个第一销轴131外，且两个第二端面凸轮1401相连。由于两个第二端面凸轮1401套在两个不同的销轴上，因此将两个第二端面凸轮1401相连，就能够对两个第二端面凸轮1401进行周向限位，使第二端面凸轮1401与第一销轴131周向锁止。
在一些示例中，弹性件1402为弹簧，弹簧套设在第一销轴131外。阻尼机构140还可以包括卡环1403，卡环1403套在第一销轴131外，弹簧位于第二端面凸轮1401和卡环1403之间。通过卡环1403对弹簧进行轴向限位，避免弹簧松脱。
图12是本公开实施例提供的一种支撑件的结构示意图。如图12所示，支撑件124包括板体1241和弧形臂1242。弧形臂1242位于板体1241靠近第一摆臂121的一面，且弧形臂1242位于第一摆臂121的侧方。弧形臂1242的一端与板体1241相连，弧形臂1242的另一端沿远离基座110的方向延伸。
参照图10所示，第一摆臂121靠近弧形臂1242的侧壁具有弧形槽1211a，弧形臂1242位于弧形槽1211a中，且弧形臂1242能够沿弧形槽1211a滑动。
本公开实施例中，第一摆臂121的第一主体部1211呈L型，第一主体部1211的一端与基座110枢接，弧形槽1211a位于第一主体部1211的另一端的端面。
通过弧形臂1242和弧形槽1211a的配合，使得支撑件124能够绕弧形槽1211a的轴线，也就是枢接轴线m 3，相对第一摆臂121转动。
相关技术中通常采用销轴等杆件进行枢接，枢接轴线与销轴的轴线是重合的，因此枢接轴线的位置受限于销轴的位置。本公开实施例中，利用弧形臂1242和弧形槽1211a的配合实现枢接。弧形臂1242和弧形槽1211a均呈圆弧形，枢接轴线位于弧形臂1242或弧形槽1211a的轴线处，通过改变弧形臂1242和弧形槽1211a的半径，就能够改变枢接轴线的位置，不受限于销轴等结构，布置更加灵活。
如图12所示，支撑件124还包括驱动部1243。驱动部1243和弧形臂1242位于板体1241的同一面，且驱动部1243位于第二摆臂122的侧方。驱动部1243具有驱动槽1243a，驱动槽1243a位于驱动部1243靠近第二摆臂122的一侧。
本公开实施例中，驱动部1243位于弧形臂1242靠近第二摆臂122的一侧，即位于第二摆臂122和弧形臂1242之间，使第一摆臂121、第二摆臂122和支撑件124结构更紧凑。而且，驱动部1243位于支撑件124与第一摆臂121的枢接轴线m 3靠近基座110的一侧。在两个折叠组件120合拢的过程中，由于第二摆臂122转动的角度逼第一摆臂121转动的角度小，而驱动槽1243a相比枢接轴线m 3更靠近基座110，因此两个支撑件124会相对靠拢，呈八字型。
如图11所示，第二摆臂122的侧壁具有驱动凸起1223。驱动凸起1223位于第二摆臂122靠近驱动部1243的一侧。图13是图7中的Ⅱ-Ⅱ截面图。如图13所示，驱动凸起1223部分位于驱动槽1243a中。
本公开实施例中，第二摆臂122的第二主体部1221的一端与基座110枢接，驱动凸起1223位于第二主体部1221的另一端，即位于第二主体部1221远离基座110的一端。驱动凸起1223呈圆柱状，驱动凸起1223的一端与第二主体部1221相连。驱动凸起1223平行于第二摆臂122与基座110的枢接轴线m 2。
在第二摆臂122相对基座110转动时，驱动凸起1223与驱动槽1243a的侧壁接触，并挤压驱动槽1243a的侧壁，推动驱动部1243，使支撑件124绕枢接轴线m 3转动。在折叠铰链处于展开状态时，驱动凸起1223位于驱动槽1243a远离基座110的一端。在折叠铰链处于折叠状态时，驱动凸起1223位于驱动槽1243a靠近基座110的一端。
参照图1所示，该电子设备还包括顶板150，顶板150位于顶板150的顶部，且与基座110相连，顶板150能够起到遮挡和保护的作用，对基座110及其内部的结构进行遮挡，也避免外界的杂物进入到基座110中影响折叠铰链100的正常工作。顶板150还能够提供平面区域，利于支撑柔性屏400。
图14是本公开实施例提供的一种电子设备的结构示意图。如图14所示，该电子设备包括折叠铰链100、第一壳体200、第二壳体300和柔性屏400，折叠铰链100为如图1～图13所示的任一种折叠铰链。第一壳体200与折叠铰链100中的一个折叠组件120的第一摆臂121相连，第二壳体300与折叠铰链100中的另一个折叠组件120的第一摆臂121相连。柔性屏400位于折叠铰链100、第一壳体200和第二壳体300的同一侧，且与第一壳体200和第二壳体300相连。
在开合第一壳体200和第二壳体300的过程中，支撑件124会发生双旋运动，即支撑件124既会随着第一摆臂121一起相对基座110转动，又会相对第一摆臂121转动。这就使得在折叠前后，支撑件124和第一摆臂121的相对位置会发生变化，能够使两个折叠组件120在合拢时，两个支撑件124能呈现出一定的夹角。第一摆臂121和第二摆臂122之间通过同步齿轮123进行传动，结构简单，方便制作，且成本较低。
该电子设备包括两个折叠铰链100，两个折叠铰链100的基座110连接为一个整体。在这两个折叠铰链100中，靠近第一壳体200的折叠组件120的支撑件124连接为一个整体，靠近第二壳体300的折叠组件120的支撑件124连接为一个整体，使得这两个折叠铰链100 运动更加同步。
电子设备中折叠铰链100的数量可以根据电子设备的大小进行设置，对于尺寸较小的电子设备，可以设置较少的折叠铰链100，例如设置1个或2个折叠铰链100。对于尺寸较大的电子设备，可以设置较多的折叠铰链100，例如设置3个或3个以上的折叠铰链100。
以上所述仅为本公开一个实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (11)

  1. 一种折叠铰链，其特征在于，包括基座(110)和两个折叠组件(120)，两个所述折叠组件(120)位于所述基座(110)的两侧，且均与所述基座(110)相连，并能够相对开合；
    所述折叠组件(120)包括第一摆臂(121)、第二摆臂(122)、同步齿轮(123)和支撑件(124)；
    所述第一摆臂(121)与所述基座(110)枢接；
    所述第二摆臂(122)与所述基座(110)枢接，且所述第二摆臂(122)与所述基座(110)的枢接轴线(m 2)平行于所述第一摆臂(121)与所述基座(110)的枢接轴线(m 1)；
    所述同步齿轮(123)位于所述基座(110)中，传动连接所述第一摆臂(121)和所述第二摆臂(122)；
    所述支撑件(124)与所述第一摆臂(121)枢接，且与所述第二摆臂(122)联动，能够在所述第二摆臂(122)的作用下，相对所述第一摆臂(121)转动。
  2. 根据权利要求1所述的折叠铰链，其特征在于，所述同步齿轮(123)与所述第一摆臂(121)的传动比，小于所述同步齿轮(123)与所述第二摆臂(122)的传动比。
  3. 根据权利要求1所述的折叠铰链，其特征在于，所述第一摆臂(121)和所述第二摆臂(122)在平行于所述同步齿轮(123)的轴线的方向上间隔布置；
    所述第一摆臂(121)包括第一主体部(1211)和第一齿轮部(1212)，所述第一齿轮部(1212)位于所述第一主体部(1211)靠近所述第二摆臂(122)的一侧；
    所述第二摆臂(122)包括第二主体部(1221)和第二齿轮部(1222)，所述第二齿轮部(1222)位于所述第二主体部(1221)靠近所述第一摆臂(121)的一侧；
    所述同步齿轮(123)位于所述第一主体部(1211)和所述第二主体部(1221)之间，与所述第一齿轮部(1212)和所述第二齿轮部(1222)啮合。
  4. 根据权利要求3所述的折叠铰链，其特征在于，所述第一齿轮部(1212)和所述第二齿轮部(1222)在垂直于所述同步齿轮(123)轴线的平面上的正投影至少部分重叠。
  5. 根据权利要求1～4任一项所述的折叠铰链，其特征在于，两个所述折叠组件(120)的所述同步齿轮(123)的轴线(m 4)的间距，小于两个所述折叠组件(120)的所述第一摆臂(121)与所述基座(110)的枢接轴线(m 1)的间距，且小于两个所述折叠组件(120)的所述第二摆臂(122)与所述基座(110)的枢接轴线(m 2)的间距。
  6. 根据权利要求1～5任一项所述的折叠铰链，其特征在于，两个所述折叠组件(120)的所述同步齿轮(123)啮合。
  7. 根据权利要求3所述的折叠铰链，其特征在于，所述第一摆臂(121)还包括第一端面 凸轮(1213)，所述第一端面凸轮(1213)位于所述第一主体部(1211)远离所述第一齿轮部(1212)的一侧，所述第一端面凸轮(1213)与所述第一齿轮部(1212)同轴布置；
    所述折叠铰链还包括阻尼机构(140)，所述阻尼机构(140)位于所述基座(110)中，且位于所述第一主体部(1211)远离所述第一齿轮部(1212)的一侧，所述阻尼机构(140)与所述第一端面凸轮(1213)远离所述第一主体部(1211)的端面配合。
  8. 根据权利要求7所述的折叠铰链，其特征在于，所述阻尼机构(140)包括第二端面凸轮(1401)和弹性件(1402)，所述第二端面凸轮(1401)位于所述第一端面凸轮(1213)远离所述第一主体部(1211)的一端，且与所述第一端面凸轮(1213)同轴布置，所述弹性件(1402)位于所述第二端面凸轮(1401)远离所述第一端面凸轮(1213)的一端，用于提供弹力，使所述第二端面凸轮(1401)与所述第一端面凸轮(1213)接触。
  9. 根据权利要求1～8任一项所述的折叠铰链，其特征在于，所述支撑件(124)包括板体(1241)和弧形臂(1242)，所述弧形臂(1242)位于所述板体(1241)靠近所述第一摆臂(121)的一面，且位于所述第一摆臂(121)的侧方，所述弧形臂(1242)的一端与所述板体(1241)相连，另一端沿远离所述基座(110)的方向延伸；
    所述第一摆臂(121)靠近所述弧形臂(1242)的侧壁具有弧形槽(1211a)，所述弧形臂(1242)位于所述弧形槽(1211a)中，且能够沿所述弧形槽(1211a)滑动。
  10. 根据权利要求9所述的折叠铰链，其特征在于，所述支撑件(124)还包括驱动部(1243)，所述驱动部(1243)和所述弧形臂(1242)位于所述板体(1241)的同一面，且所述驱动部(1243)位于所述第二摆臂(122)的侧方，所述驱动部(1243)具有驱动槽(1243a)，所述驱动槽(1243a)位于所述驱动部(1243)靠近所述第二摆臂(122)的一侧；
    所述第二摆臂(122)的侧壁具有驱动凸起(1223)，所述驱动凸起(1223)位于所述第二摆臂(122)靠近所述驱动部(1243)的一侧，且部分位于所述驱动槽(1243a)中。
  11. 一种电子设备，其特征在于，包括折叠铰链(100)、第一壳体(200)、第二壳体(300)和柔性屏(400)，所述折叠铰链(100)为如权利要求1～10任一项所述的折叠铰链，所述第一壳体(200)与所述折叠铰链(100)中的一个折叠组件(120)的第一摆臂(121)相连，所述第二壳体(300)与所述折叠铰链(100)中的另一个折叠组件(120)的第一摆臂(121)相连，所述柔性屏(400)位于所述折叠铰链(100)、所述第一壳体(200)和所述第二壳体(300)的同一侧，且与所述第一壳体(200)和所述第二壳体(300)相连。
PCT/CN2022/128648 2021-11-09 2022-10-31 折叠铰链和电子设备 WO2023083039A1 (zh)

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