WO2023109726A1 - Ensemble charnière et dispositif de pliage - Google Patents

Ensemble charnière et dispositif de pliage Download PDF

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Publication number
WO2023109726A1
WO2023109726A1 PCT/CN2022/138275 CN2022138275W WO2023109726A1 WO 2023109726 A1 WO2023109726 A1 WO 2023109726A1 CN 2022138275 W CN2022138275 W CN 2022138275W WO 2023109726 A1 WO2023109726 A1 WO 2023109726A1
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WO
WIPO (PCT)
Prior art keywords
gear
transmission wheel
transmission
hinge assembly
deformation part
Prior art date
Application number
PCT/CN2022/138275
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English (en)
Chinese (zh)
Inventor
张东
Original Assignee
维沃移动通信有限公司
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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
Publication of WO2023109726A1 publication Critical patent/WO2023109726A1/fr

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    • 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
    • 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

Definitions

  • the present application belongs to the technical field of folding equipment, and in particular relates to a hinge assembly and a folding equipment.
  • the purpose of this application is to provide a hinge assembly and a folding device.
  • a locking mechanism and a deformation part By providing a locking mechanism and a deformation part, when the deformation part is in a locked position, a reverse torque can be generated for the reverse rotation of the first gear and the second gear. Therefore, the folding of the hinge assembly can be locked at any position.
  • the hinge assembly provided by the embodiment of the first aspect of the application includes: a first gear and a second gear; a third gear and a fourth gear meshing with each other, the third gear meshes with the first gear, and the fourth gear
  • the locking mechanism includes a first transmission wheel, a second transmission wheel and a transmission belt, the first transmission wheel is coaxially arranged with the first gear and is connected with the first gear, and the second transmission wheel is connected with the second gear Coaxially arranged and connected with the second gear;
  • the deformation part is arranged on the transmission belt, and when the deformation part is in a locked state, the transmission belt is connected to the first transmission wheel and the second transmission wheel; when the deformation part is in a relaxed state, the transmission belt Disconnect the transmission connection with the first transmission wheel and the second transmission wheel.
  • the hinge assembly mainly includes four gears and a locking mechanism that realizes the locking function for the overall operation of the hinge assembly.
  • the four gears mainly include the first gear and the second gear located on both sides and the third gear and the fourth gear located in the middle, wherein the first gear and the second gear are mainly used to connect with the external plates or Other structures are fixed to achieve the effect of folding and rotating.
  • the third gear and the fourth gear they mainly play the role of transmission between the first gear and the second gear.
  • the four gears mesh in sequence , when any one of the first gear and the second gear rotates, under the principle of meshing, the adjacent gear, that is, the third gear or the fourth gear will rotate in the opposite direction, while the other will rotate relative to the driving wheel Rotation occurs in the same direction, and finally the other of the first gear and the second gear, as the last link of the entire transmission relationship, rotates in the opposite direction relative to the driving wheel, thereby realizing the unfolding and folding operations.
  • this solution also additionally sets up a locking mechanism and a deformation part.
  • the gear The rotation of the fabric produces a reverse moment, which exerts a reverse force on the rotation, making it unable to continue to fold or continue to unfold.
  • the locking mechanism includes a first transmission wheel connected to the first gear, a second transmission wheel connected to the second gear, and a transmission belt sleeved on the first transmission wheel and the second transmission wheel.
  • the two gears are respectively connected to the first gear and the second gear on both sides.
  • the rotation relationship of the two gears is reversed, and the first transmission wheel and the second transmission wheel run in the same direction under the action of the transmission belt, so if When the transmission belt is tensioned, it will generate a reverse torque on the first gear and the second gear, so as to realize the position fixation at any angle, but when the transmission belt is loose, it will not be able to act in the same direction on the first transmission wheel and the second transmission wheel.
  • the transmission effect of motion, so the first gear and the second gear can normally rotate in opposite directions at this time, so as to realize folding.
  • the transmission belt remains relatively stationary with the first transmission wheel and the second transmission wheel, so that the transmission belt can be driven to rotate together when rotating.
  • the specific transmission can be realized by tooth meshing or static friction.
  • the folding device provided by the embodiment of the second aspect of the present application includes: a first folding body and a second folding body; a hinge assembly according to any one of the above embodiments, arranged between the first folding body and the second folding body, the first The first folding body and the second folding body are rotatably connected through the hinge assembly.
  • the folding device mainly includes three parts: the first folding body, the second folding body and the hinge assembly, wherein the two ends of the hinge assembly are respectively connected to the first folding body and the second folding body, so that The rotational connection between the first folding body and the second folding body is realized under the action of the hinge assembly itself, thereby facilitating the folding or unfolding of the folding device.
  • the folding device includes the hinge assembly of any of the above embodiments, it has the beneficial effects of any of the above embodiments.
  • the foldable devices include foldable devices such as foldable mobile phones, foldable tablets, and foldable notebooks.
  • FIG. 1 shows a schematic structural diagram of a hinge assembly according to an embodiment of the present application
  • Fig. 2 shows a schematic diagram of the transmission relationship of the hinge assembly according to an embodiment of the present application
  • Fig. 3 shows a schematic structural diagram of a transmission belt according to an embodiment of the present application
  • Fig. 4 shows a schematic structural diagram of a phase change material as a deformation part according to an embodiment of the present application
  • Fig. 5 shows a schematic structural diagram of a telescopic motor as a deformation part according to an embodiment of the present application
  • FIG. 6 shows a schematic structural diagram of a hinge assembly according to an embodiment of the present application.
  • Fig. 7 shows a schematic structural diagram of a hinge assembly according to an embodiment of the present application.
  • Fig. 8 shows a schematic structural diagram of a rotating rod according to an embodiment of the present application.
  • Fig. 9 shows a schematic structural diagram of a hinge assembly according to an embodiment of the present application.
  • Fig. 10 shows a schematic structural diagram of a folding device according to an embodiment of the present application.
  • 100 hinge assembly; 1022: first gear; 1024: second gear; 1026: third gear; 1028: fourth gear; 104: locking mechanism; 1042: first transmission wheel; 1044: second transmission wheel; 1046 : transmission belt; 1048: deformation part; 1050: first tooth groove; 1052: second tooth groove; 106: heating element; 108: telescopic motor; 1082: fixed end; 1084: telescopic end; 110: locking element; 112: 114: rotating rod; 116: cushioning member; 118: rotating bracket; 120: rotating shaft; 200: folding device; 202: first folding body; 204: second folding body; 2062: first hinge; 2064 : Second hinge.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • the folding device provided in the embodiment of the present application may be a foldable device such as a folding mobile phone, a folding tablet, or a folding notebook.
  • a hinge assembly 100 and a folding device 200 provided according to an embodiment of the present application are described below with reference to FIGS. 1 to 10 .
  • a hinge assembly 100 comprising: a first gear 1022 and a second gear 1024; a third gear 1026 and a fourth gear 1028 meshing with each other; the third gear 1026 meshes with the first gear 1022, and the fourth gear 1028 meshes with the second gear 1024;
  • the locking mechanism 104 includes the first transmission wheel 1042, the second transmission wheel 1044 and the transmission belt 1046, the first transmission wheel 1042 and the first gear 1022 Coaxially arranged and connected with the first gear 1022, the second transmission wheel 1044 is coaxially arranged with the second gear 1024 and connected with the second gear 1024;
  • the deformation part 1048 is arranged on the transmission belt 1046, and the deformation part 1048 is in a locked position
  • the transmission belt 1046 is in transmission connection with the first transmission wheel 1042 and the second transmission wheel 1044 , and the transmission belt 1046 is disconnected from the first transmission wheel 1042 and the second transmission wheel 1044 when the deformation part
  • the hinge assembly 100 mainly includes four gears and a locking mechanism 104 that implements a locking function for the overall operation of the hinge assembly 100 .
  • the four gears mainly include a first gear 1022 and a second gear 1024 located on both sides and a third gear 1026 and a fourth gear 1028 located in the middle.
  • the first gear 1022 and the second gear 1024 are mainly used to fix the boards or other structures that need to be connected with the outside, so as to achieve the effect of folding and rotating.
  • the third gear 1026 and the fourth gear 1028 mainly serve as the transmission between the first gear 1022 and the second gear 1024 . It can be understood that the four gears mesh sequentially.
  • this solution additionally provides a locking mechanism 104 and a deformation part 1048.
  • a reverse moment can be generated for the rotation of the gear, thereby exerting a reverse force on the rotation, making it impossible to continue to fold or continue to unfold.
  • the locking mechanism 104 includes a first transmission wheel 1042 connected to the first gear 1022 , a second transmission wheel 1044 connected to the second gear 1024 , and sleeved on the first transmission wheel 1042 and the second transmission wheel 1044 The transmission belt 1046.
  • the two transmission wheels are respectively connected with the first gear 1022 and the second gear 1024 on both sides, the rotation relationship of the two gears is reversed, and the first transmission wheel 1042 and the second transmission wheel 1044 are in the transmission belt 1046. Under the action, they run in the same direction, so if the transmission belt 1046 is tensioned, a reverse torque will be generated on the first gear 1022 and the second gear 1024, thereby achieving position fixation at any angle. And when transmission belt 1046 is slack, then can't play the transmission effect of moving in the same direction to first transmission wheel 1042 and second transmission wheel 1044, so this moment first gear 1022 and second gear 1024 can normally reverse rotation, so that to achieve folding.
  • first transmission wheel 1042 and the second transmission wheel 1044 can be gears, sprockets, pulleys, or even light wheels with certain protrusions on the surface.
  • the first transmission wheel 1042 and the second transmission wheel 1044 are tightened, and there is a transmission relationship between them, so that the first gear and the second gear cannot continue to rotate.
  • the transmission belt 1046 is provided with a deformation portion 1048 , which can have different transmission relationships between the first transmission wheel 1042 and the second transmission wheel 1044 under different postures. Specifically, when the deformation part 1048 itself is in the locked position, it can be considered that the transmission belt 1046 as a whole is relatively tense at this time, and the first transmission wheel 1042 and the second transmission wheel 1044 can rotate together through the transmission belt 1046, thereby preventing the first gear 1022 and The tendency of the second gear 1024 to continue to move, while the deformation part 1048 itself is in a relaxed position, the drive belt 1046 as a whole is relatively loose at this time, and cannot generate reverse torque.
  • the transmission belt 1046 remains relatively stationary with the first transmission wheel 1042 and the second transmission wheel 1044, so that the transmission belt 1046 can be driven to rotate together when rotating.
  • the specific transmission can be realized by tooth meshing, or by static friction accomplish.
  • the material of the deformation portion 1048 is a phase change material
  • the hinge assembly 100 further includes: a heating element 106 , which is arranged opposite to the deformation portion 1048 , and the heating element 106 is used to change the position of the deformation portion 1048
  • the temperature of the environment, the deformation part 1048 is in a locked position at a first temperature, and the deformation part 1048 is in a relaxed position at a second temperature; wherein, the first temperature is lower than the second temperature.
  • the material of the deformable part 1048 is selected as a phase-change material, and the shape of the deformable part 1048 can change with the temperature, so that the deformable part 1048 will be between the locked position and the relaxed position. switch between each other. It can be understood that due to the characteristics of the phase change material itself, an additional heating element 106 is required to change the temperature of the deformation part 1048.
  • the posture of the deformation part 1048 at the first temperature will make the first transmission
  • the wheel 1042 and the second transmission wheel 1044 are all connected with the transmission belt 1046; and under the action of the heating element 106, when the temperature is increased to the second temperature, the deformation part 1048 can be deformed and converted into a relaxed posture, so that the first The first transmission wheel 1042 cannot rotate in the same direction as the second transmission wheel 1044, nor can it generate reverse torque to the first gear 1022 and the second gear 1024 to limit the first gear 1022 and the second gear 1024 to continue to rotate.
  • the first temperature is normal temperature
  • the second temperature is higher, which can be set according to actual needs.
  • the specific phase change material can be selected as memory alloy.
  • the deformation part 1048 is arranged opposite to the third gear 1026 and the fourth gear 1028; and/or the stress of the deformation part 1048 on the first transmission wheel and/or the second transmission wheel in the locked position is greater than that of the deformation part 1048 in the locked state. Stress on the first drive wheel and/or the second drive wheel in the relaxed position.
  • the deformation part 1048 when the deformation part 1048 is in the locked position, the stress applied to the two transmission wheels is relatively large, so that the static friction force and the reverse torque can be increased, so as to facilitate the adjustment between the first gear and the second gear.
  • the rotation relationship between them acts as a restraint to achieve the locking effect.
  • the stress applied to the two transmission wheels is small, and at this moment, the first gear and the second gear can normally mesh through the transmission of the third gear and the fourth gear, thereby realizing folding .
  • the deformation portion 1048 cannot apply tension to one or both of the first transmission wheel and the second transmission wheel, that is, the tension is zero.
  • the projected contour line of the heating element 106 on the end surface of the first gear 1022 is straight, and in the direction perpendicular to the axis connecting the first gear 1022 and the second gear 1024, the heating element 106 covers the deformation part 1048 .
  • the deformation part 1048 can be heated as a whole, and then the shape of the deformation part 1048 as a whole can be changed together, so that it can be in the locked posture and the relaxed posture. Can be switched arbitrarily.
  • heating element 106 can be strip-shaped or plate-shaped.
  • the deformation part 1048 is a telescopic motor 108, and the transmission belt 1046 is connected to the two ends of the telescopic motor 108 respectively.
  • the telescopic motor 108 is in an extended state, the deformation part 1048 is in a relaxed posture;
  • the motor 108 is in the contracted state, the deformation part 1048 is in the locked posture.
  • the deformation part 1048 is selected as the telescopic motor 108, and by disconnecting the transmission belt 1046 in the middle, it is connected to both ends of the telescopic motor 108 respectively, so that the tension force of the entire transmission belt 1046 can be adjusted when stretching. Adjustment. It can be understood that if the telescopic motor 108 is extended, the transmission belt 1046 is relatively redundant at this time, and the reverse torque of the first gear 1022 and the second gear 1024 cannot be realized. At this time, the first gear 1022 and the second gear 1024 can continue to rotate , and when the telescopic motor 108 contracts, the transmission belt 1046 will be relatively firmly connected to the first gear 1022 and the second gear 1024. At this time, no matter what angle the first gear 1022 and the second gear 1024 move in the opposite direction, it can be A reverse torque is given to limit the first gear 1022 and the second gear 1024 from continuing to rotate and keep the current position.
  • the telescopic motor 108 specifically includes a fixed end 1082 and a telescopic end 1084, the distance between the telescopic end 1084 and the fixed end 1082 is variable, and the two ends of the transmission belt 1046 are fixedly connected to the fixed end 1082 and the telescopic end 1084 respectively.
  • the two ends of telescoping motor 108 are respectively fixed end 1082 and telescopic end 1084, and the end face of telescopic end 1084 can stretch relative to the end face of fixed end 1082, that is, telescopic end 1084 can be retracted into fixed end 1082, or can from fixed end 1082 to Stretch out, by connecting the two ends of the transmission belt 1046 with the fixed end 1082 and the telescopic end 1084 respectively, in order to realize the change of the shape of the transmission belt 1046 under the two states of the telescopic motor 108 as a whole in the extended state and the contracted state .
  • first transmission wheel 1042 and the second transmission wheel 1044 are provided with teeth
  • the transmission belt 1046 is provided with first tooth grooves 1050 respectively meshed with the teeth of the first transmission wheel 1042 and the teeth of the second transmission wheel 1044 and the second gullet 1052 .
  • the mode of tooth engagement can be adopted, wherein the first transmission wheel 1042 and the second transmission wheel 1044 are provided with teeth, and the transmission belt 1046 Then the first tooth groove 1050 and the second tooth groove 1052 are provided, so that under the rotation of the first gear 1022, the first transmission wheel 1042 is driven to rotate. At this time, the transmission belt can be realized through the cooperation of the teeth and the first tooth groove 1050.
  • the driving of the second transmission wheel 1044 by 1046 will further generate a reverse torque to limit the first gear 1022 and the second gear 1024 from continuing to rotate and prevent the second gear 1024 from continuing to rotate.
  • the teeth can be evenly arranged on the first transmission wheel 1042 and the second transmission wheel 1044 along the circumferential direction, and can also be further arranged on the first transmission wheel 1042 and the second transmission wheel 1044 . Specifically, it only needs to be flexibly set according to the actual rotation range of the hinge assembly 100 .
  • first tooth groove 1050 and the second tooth groove 1052 it only needs to be set according to the actual rotation range, that is, the moving range of the transmission belt 1046, and it is not necessary to set all the upper tooth grooves on the inner side of the transmission belt 1046. .
  • FIG. 7 and FIG. 8 it also includes: a locking member 110, the locking member 110 is provided with a plurality of claws on one side facing the third gear 1026 and/or the fourth gear 1028; the driving member 112, The driving member 112 is used to drive the locking member 110 to move towards the third gear 1026 and/or the fourth gear 1028, so that the claws are engaged in the third gear 1026 and/or the fourth gear. 1028 , or the driving member 112 is used to drive the locking member 110 to move away from the direction of the third gear 1026 and/or the fourth gear 1028 , so that the pawl is separated from the third gear 1026 and/or the fourth gear 1028 .
  • an additional physical structure that is, a locking member 110 is provided, and the locking member 110 mainly prevents the third gear 1026 and the fourth gear from moving. At least one of gears 1028 continues to rotate, thereby achieving the effect of restricting the opposite rotation of the first gear 1022 and the second gear 1024 .
  • a plurality of claws are provided on the locking member 110, and the claws are used to snap into at least one of the third gear 1026 and the fourth gear 1028.
  • the driving member 112 Under the action of the locking element 110, it will drive the locking member 110 to move toward or away from the direction of the third gear 1026.
  • the third gear 1026 cannot rotate, and it cannot continue to transmit the first gear 1022 and the second gear.
  • the torque of the gear 1024 thereby maintaining the rotational position of the first gear 1022 and the second gear 1024, and when moving away from it, the claws will be disengaged.
  • the first gear 1022, the second gear 1024, and the third gear 1026 The previous transmission relationship with the fourth gear 1028 can be restored, and the rotation can be adjusted normally.
  • the driving member 112 can be a telescopic motor or a combination of a common motor and a connecting rod structure, and it only needs to be able to control the locking member 110 to move toward or away from the third gear 1026 .
  • a rotating rod 114 one end of the rotating rod 114 is provided with a locking member 110 , the driving member 112 is arranged at the other end of the rotating rod 114 , and the moving direction of the driving member 112 is opposite to that of the locking member 110 .
  • the space utilization rate can be greatly improved, especially formed by the overall outer contour of the hinge assembly 100. space.
  • the moving direction of the driving member 112 is opposite to that of the locking member 110, that is, the two are located at both ends of the rotating rod 114, and the rotating shaft of the rotating rod 114 is arranged in the middle.
  • the driving member 112 does not drive the rotating rod to rotate, and the driving member 112 drives the rotating rod to rotate, as shown in FIG. 9 .
  • a buffer piece 116 disposed between the locking piece 110 and the rotating rod 114 .
  • the buffer member 116 By setting the buffer member 116, on the one hand, the impact force of the locking member 110 when moving toward the third gear 1026 can be buffered, and on the other hand, the accurate locking of the locking member 110 can be guaranteed. 1026 is not blocked by the locking member 110, the buffer member 116 will release the previously stored potential energy, and push the locking member 110 to continue moving towards the third gear 1026, thereby ensuring that the locking member 110 will be stuck on the third gear 1026. The same holds true for the fourth gear 1028 in the tooth groove.
  • the folding device 200 provided by the embodiment of the second aspect of the present application, as shown in FIG. 10 , includes: a first folding body 202 and a second folding body 204; a hinge assembly 100, which is arranged on the first folding body 202 and the second folding body 204 , the first folding body 202 and the second folding body 204 are rotationally connected through the hinge assembly 100 .
  • the folding device 200 mainly includes three parts: the first folding body 202 , the second folding body 204 and the hinge assembly 100 , wherein the two ends of the hinge assembly 100 are respectively connected with the first folding body 202 and the second folding body 202 .
  • the two folding bodies 204 are connected, so as to realize the rotational connection between the first folding body 202 and the second folding body 204 under the action of the hinge assembly 100 itself, thereby facilitating the folding or unfolding of the folding device 200 .
  • the folding device 200 since the folding device 200 includes the hinge assembly 100 of any of the above embodiments, it has the beneficial effects of any of the above embodiments.
  • the foldable device 200 includes foldable devices such as a foldable mobile phone, a foldable tablet, and a foldable notebook.
  • FIG. 6 it also includes: a first hinge 2062, one end of the first hinge 2062 is connected with the first folding body 202, and the other end is connected with the first gear 1022 of the hinge assembly 100; the second hinge 2064 , one end of the second hinge 2064 is connected with the second folding body 204 , and the other end is connected with the second gear 1024 of the hinge assembly 100 .
  • the first folding body 202 and the second folding body 204 can be connected, so as to realize the rotational connection between the brackets of the first folding body 202 and the second folding body 204, Since the first gear 1022 and the second gear 1024 move in opposite directions, the rotation directions of the first folding body 202 and the second folding body 204 must also be opposite, which can greatly reduce the external force exerted by the user. Folding and unfolding of the folding device 200 can be operated with only one hand.
  • connection between the first hinge 2062 and the first folding body 202 may be a detachable connection, such as screw connection, or a fixed connection, such as welding.
  • connection between the second hinge 2064 and the second folding body 204 can be a detachable connection, such as screw connection, or a fixed connection, such as welding.
  • a folding terminal which mainly includes: a housing A (ie, the first folding body 202), a housing B (ie, the second folding body 204), a hinge, and a hinge locking mechanism 104 ( That is, the hinge assembly 100) is composed of housing A and housing B respectively locked on both sides of the hinge by screws; the hinge locking mechanism 104 is fixed on the bracket in the middle of the hinge.
  • This hinge is mainly made up of hinge bracket, hinge, gear (namely first gear 1022, second gear 1024, third gear 1026 and fourth gear 1028).
  • the hinge A ie the first hinge 2062
  • the hinge D ie the second hinge 2064
  • the gear D ie the second gear 1024
  • it also includes a pulley A (ie the first transmission wheel 1042), a pulley B (ie the second transmission wheel 1044), a memory metal belt (ie the transmission belt 1046) and a heating rail (ie the heating element 106).
  • hinge A, gear A and pulley A are fixed on the same shaft and rotate at the same time
  • hinge B, gear D and pulley B are fixed on the same shaft and rotate at the same time.
  • the heating guide rail is fixed on the hinge bracket and connected with a control circuit. When the circuit is closed, the guide rail starts heating, and when the circuit is disconnected, the guide rail stops heating.
  • the memory metal belt coil part is straightened at normal temperature. When the temperature rises to a certain level, the belt coil part will bend, and the memory metal will straighten again when the temperature drops below the phase transition temperature.
  • gear A and gear D rotate in opposite directions
  • pulley A and pulley B rotate in the same direction
  • gear A and pulley A are coaxial
  • gear D and pulley A are coaxial
  • the pulley B is coaxial.
  • gear D and pulley B have the opposite torque generated by the pulley to prevent gear D from rotating counterclockwise.
  • the locking mechanism uses the torque generated by this contradiction to lock the hinge.
  • the belt with the shape memory coil is straightened and assembled to the pulley.
  • the total length of the belt is much longer than the normal working length of the belt. state, the pulley does not work, and the gears and hinges work normally.
  • the heating guide rail starts to be heated by electricity, and the heating is above the phase transition temperature.
  • the temperature rises to restore the shape of the alloy, and the shape restoration belt is tightened.
  • the shape restoration force will prevent the coil area from being straightened, ensuring that the pulley Strain and work.
  • the heating rail stops working and the temperature drops.
  • the cooling makes the coil position memory metal stretch out.
  • the temperature drops to normal temperature, the coil expands, the belt is in a relaxed state, and the pulley does not work. (eg: TiNi shape memory alloy).
  • the terminal controls whether the heating guide rail is working or not through APP, gesture buttons, buttons, etc., controls the state of the memory metal belt, and then controls the transmission state of the pulley.
  • the pulley transmission mechanism and the gear transmission mechanism work at the same time.
  • it also includes pulley A (i.e. first transmission wheel 1042), pulley B (i.e. second transmission wheel 1044), belt (i.e. transmission belt 1046) and telescopic motor 108, telescopic motor 108 It is fixed on the hinge bracket and connected with a control circuit. When the circuit is closed, the motor starts to stretch, and when the circuit is disconnected, the motor stops stretching and is in a self-locking state. The belt is fixed at both ends of the motor, and when the motor stretches, it will drive the belt to relax and tighten.
  • pulley A i.e. first transmission wheel 1042
  • pulley B i.e. second transmission wheel 1044
  • belt i.e. transmission belt 1046
  • gear A and gear D rotate in opposite directions
  • pulley A and pulley B rotate in the same direction. Since gear A and pulley A are coaxial, gear D and belt The wheel B is coaxial.
  • gear transmission and the pulley transmission work at the same time, the rotation directions of the shaft where the gear A is located and the shaft where the gear D is located will conflict.
  • the gear A rotates clockwise
  • the gear D will rotate counterclockwise at the same time.
  • pulley A rotates clockwise like gear A, which will drive pulley B to rotate clockwise.
  • gear D and pulley B have the opposite torque generated by the pulley to prevent gear D from rotating counterclockwise.
  • the locking mechanism uses the torque generated by this contradiction to realize the locking of the hinge.
  • the motor will be powered off and self-locked after the motor is extended to a fixed distance.
  • the belt is in a loose state due to the lengthening.
  • the belt drive does not work, the gear drive works normally; when the hinge needs to be locked, the motor shaft will shrink, the pulley will tighten during the contraction process, and finally the belt will be tightened, the pulley drive works normally, the pulley drive mechanism and the gear
  • the transmission mechanism works at the same time to realize the locking of the shaft rotation.
  • the motor shaft When the locking is not required, the motor shaft is extended, and the tension on the belt will decrease during the elongation process. When the elongation reaches a fixed distance, the pulley drive is completely relaxed. Status doesn't work.
  • the terminal controls the expansion and contraction of the motor through the APP, gesture buttons, buttons, etc., controls the slack and tension state of the belt, and then controls the transmission state of the pulley.
  • the pulley transmission mechanism and the gear transmission mechanism work at the same time.
  • the belt In order to make the structure more reliable, the belt is made of high-strength composite materials with good mechanical properties.
  • the motor will automatically open and protect and elongate after being subjected to a tension exceeding the rated load.
  • the design process Calculate the locking force required by the whole machine due to gravity and a certain external force, and then select a suitable motor.
  • a motor ie, the driving element 112
  • a flexible double-headed pawl ie, the locking element 110
  • the motor is fixed on the hinge bracket, and the fixed-distance expansion and contraction of the motor is controlled by the PCB board control circuit.
  • One end of the flexible double-headed pawl is fixed on the telescopic end 1084 of the motor through the hinge, and the expansion and contraction of the motor will drive the double-headed pawl around the fixed axis (i.e.
  • Rotating shaft rotates; the motor is in a shrinking state when the locking mechanism is not working; one end of the double-headed pawl is fixed on the motor, and there is a hole in the middle of the pawl, as shown in Figure 7, assembled on the hinge by the fixed shaft (ie the rotating shaft 120)
  • the ratchet support can rotate around the fixed axis, and the other end of the double-headed ratchet is a U-shaped double-headed ratchet, and the ratchet has two claw heads; when the two claw heads of the double-headed ratchet When they are stuck on gear B and gear C respectively, the gears are stuck and cannot rotate; a silicone spring damper is installed between the pawl bracket and the claw head. The main function of the damper is to reduce the impact of the claw head on the gear, and at the same time protect the motor from Motor overload.
  • the motor control switch when the mobile phone is opened and closed to the desired angle, the motor control switch is turned on through gestures, buttons or APP, and the motor judges that the position of the shaft is at the bottom at this time, and the motor shaft begins to elongate, and at the same time drives The double-headed pawl rotates around the fixed axis, and the double-headed pawl rotates towards the gear. The motor stops working after extending to a fixed distance (this distance ensures that the pawl can be locked into the gear slot).
  • the motor shaft will continue to extend the set distance, at this time the pawl is supported by the gear radial force, the silicone spring damper will be compressed, and the motor shaft can also normally extend to the set length without As for the motor overload caused by the double-headed pawl bracket being stuck, at this time, if the gear is not stuck, there will be a slight rotation of the spring damper to restore to ensure that the claw head is stuck in the gear groove, thereby protecting the gear from being damaged by the top of the gear teeth. Otherwise, if the gear does not rotate, it means that the gear has been stuck. In this way, the gears B and C are stuck and cannot rotate, so that the gears A and D cannot rotate, and the hinge cannot rotate.
  • buttons or APP When it is necessary to rotate, turn on the motor control switch through gestures, buttons or APP.
  • the motor judges that the position of the shaft is at the top and the motor shaft starts to shrink.
  • the claw head is separated from the gear, and finally the gap between the claw head and the gear is ensured enough, and the motor stops working at this time.
  • the folding of the hinge assembly can be locked at any position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Telephone Set Structure (AREA)

Abstract

Sont fournis un ensemble charnière et un dispositif de pliage. L'ensemble charnière (100) comprend : un premier engrenage (1022) et un deuxième engrenage (1024) ; un troisième engrenage (1026) et un quatrième engrenage (1028) qui sont en prise l'un avec l'autre, le troisième engrenage (1026) étant en prise avec le premier engrenage (1022), et le quatrième engrenage (1028) étant en prise avec le deuxième engrenage (1024) ; un mécanisme de verrouillage (104), comprenant une première roue de transmission (1042), une seconde roue de transmission (1044) et une courroie de transmission (1046), la première roue de transmission (1042) étant agencée de manière coaxiale par rapport au premier engrenage (1022) et étant reliée au premier engrenage (1022), et la seconde roue de transmission (1044) étant agencée de manière coaxiale par rapport au deuxième engrenage (1024) et étant reliée au deuxième engrenage (1024) ; et une partie déformable (1048), agencée sur la courroie de transmission (1046), la courroie de transmission (1046) étant en liaison de transmission avec la première roue de transmission (1042) et la seconde roue de transmission (1044) lorsque la partie déformable (1048) se trouve dans une position verrouillée, et la liaison de transmission entre la courroie de transmission (1046) et la première roue de transmission (1042) et la seconde roue de transmission (1044) étant rompue lorsque la partie déformable (1048) est dans une position relâchée.
PCT/CN2022/138275 2021-12-17 2022-12-12 Ensemble charnière et dispositif de pliage WO2023109726A1 (fr)

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