CN113958598A - Hinge, folding device and control method thereof - Google Patents
Hinge, folding device and control method thereof Download PDFInfo
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- CN113958598A CN113958598A CN202111424349.4A CN202111424349A CN113958598A CN 113958598 A CN113958598 A CN 113958598A CN 202111424349 A CN202111424349 A CN 202111424349A CN 113958598 A CN113958598 A CN 113958598A
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- coil
- rotating shaft
- shell
- control unit
- angle sensor
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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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The invention discloses a hinge, a folding device and a control method thereof, wherein the hinge comprises: the magnetic induction type wire winding machine comprises a shell, a rotating shaft and a control unit, wherein the shell is provided with an accommodating space, the rotating shaft is accommodated in the accommodating space and is rotatably connected with the shell, a magnet and an angle sensor is arranged in the shell and is used for measuring the rotating angle of the rotating shaft, the magnet is used for forming a magnetic field with magnetic induction lines distributed along the radial direction of the rotating shaft, a coil positioned in the magnetic field is arranged on the rotating shaft, when the rotating shaft rotates, the coil cuts the magnetic induction lines, a plurality of first supporting arms extending along the radial direction of the shell are arranged on the outer side surface of the shell, a plurality of second supporting arms extending along the radial direction of the rotating shaft are arranged on the rotating shaft, an opening is formed in the shell, the end parts of the second supporting arms penetrate through the opening and are positioned on the outer side of the shell, and the control unit is configured to apply current to the coil according to signals collected by the angle sensor. The rotating shaft in the invention rotates stably.
Description
Technical Field
The invention relates to the technical field of hinges. And more particularly, to a hinge, a folding apparatus, and a control method thereof.
Background
Flexible screens have been developed in recent years as an important application technology of OLEDs (Organic Light-Emitting semiconductors). Some mobile terminals based on folding screens such as folding mobile phones with flexible screens have appeared in the market at present, hinges in existing folding mobile terminals are all of pure mechanical structures, are commonly in butterfly forms, connecting rods, disc types and the like, but have a common characteristic, the rotating damping of the hinges is fixed once adjusted and calibrated, the structure is relatively complex, parts are fine and many, corrosion and dust erosion caused by water vapor in the long-time use process can cause the whole mobile terminal to be slightly damaged in use, and serious people can directly cause the mobile terminal to lose efficacy. Secondly, the pure mechanical structure has single function, cannot meet application scenes and environments with various forms, cannot dynamically change the damping sense according to user setting, causes the disadvantage of poor terminal user experience, and cannot enter the current day-to-day intelligent electronic equipment.
Disclosure of Invention
The invention aims to provide a hinge, a folding device and a control method thereof, and aims to solve the problem that the damping of the hinge used for a folding screen in the related art is fixed and cannot meet various application scenes.
According to an aspect of the present invention, there is provided a hinge comprising: the magnetic induction type wire winding machine comprises a shell, a rotating shaft and a control unit, wherein the shell is provided with an accommodating space, the rotating shaft is accommodated in the accommodating space and is rotatably connected with the shell, a magnet and an angle sensor is arranged in the shell and is used for measuring the rotating angle of the rotating shaft, the magnet is used for forming a magnetic field with magnetic induction lines distributed along the radial direction of the rotating shaft, a coil positioned in the magnetic field is arranged on the rotating shaft, when the rotating shaft rotates, the coil cuts the magnetic induction lines, a plurality of first supporting arms extending along the radial direction of the shell are arranged on the outer side surface of the shell, a plurality of second supporting arms extending along the radial direction of the rotating shaft are arranged on the rotating shaft, an opening is formed in the shell, the end parts of the second supporting arms penetrate through the opening and are positioned on the outer side of the shell, and the control unit is configured to apply current to the coil according to signals collected by the angle sensor.
Preferably, the control unit is configured to apply a current to the coil according to an external control signal and a signal collected by the angle sensor, so that the coil generates a power for driving the rotating shaft to rotate relative to the shell. { user keys, the control unit enables application of current to generate power in response to activation of the keys }
Preferably, a force sensor connected with the control unit is arranged on the first supporting arm and/or the second supporting arm.
Preferably, the control unit is configured to apply a current to the coil according to the signal collected by the force sensor and the signal collected by the angle sensor, so that the coil generates a damping force that resists rotation of the rotating shaft relative to the shell.
Preferably, the control unit configured to apply a current to the coil according to the signal collected by the force sensor and the signal collected by the angle sensor to cause the coil to generate a damping force that resists rotation of the rotating shaft relative to the shell comprises:
the control unit is configured to acquire the rotating speed of the rotating shaft according to the signals collected by the angle sensor when receiving the signals collected by the force sensor, and judge the relation between the rotating speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold value, applying current to the coil so as to enable the coil to generate a preset damping force for resisting the rotation of the rotating shaft;
and if the rotating speed is greater than the preset threshold value, applying current to the coil so as to enable the coil to generate damping force which hinders the rotation of the rotating shaft and is positively correlated with the rotating speed.
Preferably, the magnet and the coil are provided in plural numbers, respectively, the magnet forming plural magnetic fields, each of which has the coil provided therein.
Preferably, the number of the shell sleeves and the number of the rotating shafts are two, and the two shell sleeves are fixedly connected side by side so that the two rotating shafts are arranged in parallel.
According to another aspect of the present invention, there is provided a folding apparatus comprising:
the hinge described above, which is configured to fold or unfold the folding device;
a flexible screen disposed on a surface of the folding device, the flexible screen being folded or unfolded as the folding device is folded or unfolded.
Preferably, the first support arm and the second support arm of the hinge are respectively connected with the middle frame of the flexible screen.
Preferably, the housing of the hinge is shaped as a cylinder with a radius equal to the bending radius of the flexible screen after folding.
According to still another aspect of the present invention, there is provided a method of controlling the folding apparatus described above, including:
and applying current to the coil by the control unit according to the signals collected by the angle sensor.
Preferably, the applying, by the control unit, the current to the coil according to the signal acquired by the angle sensor includes: and applying current to the coil by using the control unit according to an external control signal and a signal acquired by the angle sensor so as to enable the coil to generate power for driving the rotating shaft to rotate relative to the shell, thereby driving the rotating shaft to rotate to drive the folding device to fold or unfold.
Preferably, the control unit is responsive to the signal collected by the force sensor and applies a current to the coil according to the signal collected by the angle sensor, so that the coil generates a damping force that resists the rotation of the rotating shaft relative to the housing, and the damping force resists the folding or unfolding of the folding device.
Preferably, the control unit obtains the rotation speed of the rotating shaft according to the signal collected by the angle sensor, and judges the relationship between the rotation speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold value, applying current to the coil so as to enable the coil to generate a preset damping force for resisting the rotation of the rotating shaft;
and if the rotating speed is greater than the preset threshold value, applying current to the coil so as to enable the coil to generate damping force which hinders the rotation of the rotating shaft and is positively correlated with the rotating speed.
The invention has the following beneficial effects:
the hinge can realize two working modes, namely an automatic mode and a manual mode, wherein in the automatic mode, the coil can generate stable power for driving the rotating shaft to rotate, in the manual mode, the coil can generate damping force for blocking the rotating shaft to rotate, and the rotating shaft is prevented from rotating too fast under the action of the damping force. So that the rotating shaft can rotate smoothly under the action of the power or damping force.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural view of the hinge of the present invention.
Fig. 2 shows a schematic view of the folding device of the present invention when unfolded.
Fig. 3 shows a schematic view of the folding device according to the invention when folded.
Fig. 4 shows a schematic view of the hinge of the folding device of the present invention with two housings and a rotating shaft.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
At present, for electronic products with folding screens, a dynamic bending machine is used in a laboratory for 10 ten thousand bending life tests, but the bending force and the bending speed of the bending machine are constant, which is not consistent with the actual application scene. The relative stability and the balance of the opening and closing force and the speed of the product folded each time can not be guaranteed for different users of the terminal equipment, and even the stability of the force and the speed can not be guaranteed for the same user opening and closing once, so that the service life of materials such as CPI and POL in the screen laminated structure of the bending area under the actual working condition is greatly reduced.
In view of the above problems, the present invention provides a hinge, as shown in fig. 1, including a housing 10 and a rotating shaft 20, and a control unit, wherein a rear receiving space is formed in the housing 10, the rotating shaft 20 is received in the receiving space, and the rotating shaft 20 is rotatably connected to the housing 10, specifically, the rotating shaft 20 is connected to the housing 10 through a bearing sleeved thereon, so that the rotating shaft 20 can rotate in the housing 10. A pair of ball bearings is provided at both ends of the rotation shaft 20 for reducing friction between the rotation shaft 20 and the housing 10, assisting the rotation of the rotation shaft 20 and thus reducing the overall power consumption of the system.
Be equipped with magnet 11 and angle sensor 12 in the shell 10, magnet 11 is used for forming the magnetic field of magnetic induction line along the radial distribution of pivot 20, and for example magnet 11 can be a set of arc permanent magnet, and this arc permanent magnet fixed combination in the inboard surface of shell 10, and the polarity of two arc permanent magnets sets up relatively, and the arc length of arc permanent magnet can be decided according to the radius of shell 10, but the arc length of every permanent magnet is not less than the arc length that the angle of 90 degrees corresponds to guarantee certain magnetic field intensity. Preferably, the permanent magnet may be a neodymium iron boron strong magnet.
The angle sensor 12 is used for acquiring the rotation angle of the rotating shaft 20 and sending the acquired signal to the control unit, and the control unit can calculate the rotation speed of the rotating shaft 20 and the current relative position between the rotating shaft 20 and the shell 10 according to the signal. Specifically, the angle sensor 12 may be a hall sensor, and detects a change in a magnetic field between the housing 10 and the rotating shaft 20 to obtain a rotation angle of the rotating shaft 20, and further obtain a relative rotation speed of the two.
The rotating shaft 20 is provided with a coil 21, the coil 21 is positioned in a magnetic field formed by the magnet 11, and when the coil 21 rotates along with the rotating shaft 20, the coil 21 cuts the magnetic induction line, so that when the control unit applies current to the coil 21, the coil 21 is acted by ampere force, and the rotating shaft 20 is acted by torque. The coil 21 forms a closed loop with a power supply module in the control unit, and when the control unit applies a voltage to the coil 21, a current is formed in the coil 21.
The outer side surface of shell 10 is equipped with a plurality of first support arms 13 along its radial extension, is equipped with a plurality of second support arms 22 along its radial extension on the pivot 20, has seted up the opening on the shell 10, and the tip of second support arm 22 passes the opening is located the outside of shell 10, the opening sets up to rectangular shape to when making pivot 20 rotate, shell 10 can not block second support arm 22. Preferably, the arc length of the opening corresponds to an angle of 180 degrees, so that the rotation shaft 20 can be rotated only 180 degrees with respect to the housing 10. The first support arm 13 and the second support arm 22 are shaped like a trapezoid, and the width of the connection with the housing 10 or the rotation shaft 20 is larger than that of the free end.
The control unit is configured to apply a current to the coil 21 according to an external control signal and a signal collected by the angle sensor 12, so that the coil 21 generates a power to drive the rotation shaft 20 to rotate relative to the housing 10. Specifically, a key may be disposed at an end of the casing 10, and when the user presses the key, the control unit responds to the trigger of the key, and determines the current position of the rotating shaft 20 according to the signal of the angle sensor 12, and then applies a voltage to the coil 21, so that a current is formed on the coil 21 due to a closed loop formed by the coil and the control unit, and the coil 21 is acted by an ampere force in a magnetic field, thereby driving the rotating shaft 20 to rotate.
The electromagnetic hinge utilizes the control unit to accurately regulate and control the current value so as to control the rotating speed and the torque of the rotating shaft 20 in the automatic working mode, has the characteristics of stable rotating speed and balanced force, can effectively improve the uncontrollable property of manual opening, closing and folding of folded products in the working mode, and can greatly prolong the service life of devices in a bending area by automatically controlling the opening and closing.
In the present embodiment, the second support arm 22 is provided with a force sensor 23, and the force sensor 23 may be a strain gauge pressure sensor. The control unit applies a current to the coil 21 based on the signal collected by the force sensor 23 and the signal collected by the angle sensor 12, so that the coil 21 generates a damping force that resists rotation of the rotating shaft 20 relative to the housing 10. Specifically, after the control unit receives the signal collected by the force sensor 23 and determines the current position of the rotating shaft 20 according to the signal collected by the angle sensor 12, a voltage is applied to the coil 21, a closed loop is formed between the coil and the control unit, so that a current is formed on the coil 21, the coil 21 is acted by an ampere force in a magnetic field, and the coil 21 generates a damping force for blocking the rotation of the rotating shaft 20. It can be understood that the force sensor 23 may also be disposed on the first support arm 13, or both the first support arm 13 and the second support arm 22 are disposed with the force sensor 23, so as to improve the accuracy of the signal collected by the force sensor 23.
Further, after the control unit receives the signal collected by the force sensor 23 and determines the current position of the rotating shaft 20 according to the signal collected by the angle sensor 12, the control unit obtains the rotating speed of the rotating shaft 20 according to the signal collected by the angle sensor 12 and determines the relationship between the rotating speed and the preset threshold:
if the rotating speed is less than or equal to the preset threshold, applying current to the coil 21 to enable the coil 21 to generate a preset damping force for preventing the rotating shaft 20 from rotating, namely when the rotating speed is less than or equal to the preset threshold, the damping force is constant;
if the rotating speed is greater than the preset threshold, applying a current to the coil 21 to make the coil 21 generate a damping force which hinders the rotation of the rotating shaft 20 and is positively correlated with the rotating speed, that is, when the rotating speed is greater than the preset threshold, the damping force is increased along with the increase of the rotating speed.
In the embodiment, 3 magnets 11 and 3 coils 21 are respectively arranged, 3 groups of magnets 11 form 3 magnetic fields, each magnetic field is internally provided with a coil 21, the 3 coils 21 are respectively located at different positions on the peripheral surface of the rotating shaft 20, and a certain included angle is formed between planes where the 3 coils 21 are located, so that the driving moment of the rotating shaft 20 is improved, and the rotating shaft 20 can stably rotate.
As shown in fig. 4, in some embodiments, the number of the housings 10 and the shafts 20 may be 2, and the 2 housings 10 are fixed side by side to form a whole, so that the two shafts 20 are parallel to each other, and in this structure, the first support arm 13 and the second support arm 22 are respectively fixed to the 2 shafts 20. The hinge with the structure is suitable for large-size folding screen products, can effectively bear uniformly distributed loads, and guarantees the folding mechanical characteristics of medium and large-size products and the interactivity of end users.
As shown in fig. 2 and 3, the present invention also provides a folding apparatus including the above-described hinge configured to fold or unfold the folding apparatus, and a flexible screen 30 provided on a surface of the folding apparatus, the flexible screen 30 being folded or unfolded as the folding apparatus is folded or unfolded. Specifically, the first support arm 13 and the second support arm 22 on the hinge are respectively fixedly connected with the middle frame of the flexible screen 30, and the flexible screen 30 is unfolded or folded when the rotating shaft 20 rotates relative to the housing 10. The asymmetric first supporting arm 13 and the second supporting arm 22 on the outer side of the rotating shaft are designed to uniformly disperse the bending force to the whole screen body, so that more obvious creases appear on the appearance of the screen body after the screen body is bent for a long time.
The rotating shaft 20 can rotate to a first position relative to the shell 10, so as to drive the flexible screen 30 to expand to 180 degrees, and when the rotating shaft 20 is located at the first position, the flexible screen 30 is in an expanded state, and the folding device can obtain the largest display area, so as to meet the requirement of large-area display of a user.
The rotating shaft 20 rotates to the second position relative to the housing 10 to drive the flexible screen 30 to fold, that is, the two light emitting surfaces of the two parts of the flexible screen are approximately attached, referring to fig. 3, when the rotating shaft 20 is located at the second position, the flexible screen 30 is in a folded state, and the folding device can obtain the minimum overall dimension and is convenient to carry.
In the present embodiment, the first position and the second position can be regarded as two extreme positions of the rotation shaft 20 relative to the housing 10, when the rotation shaft 20 is at the first position, the flexible screen 30 is in a flat state, and under normal conditions, the rotation shaft 20 can not rotate any more to reversely fold the flexible screen 30. When the rotating shaft 20 is at the second position, the flexible screen 30 is in a folded state, and under normal conditions, the rotating shaft 20 cannot rotate any more to enable the flexible screen to be attached excessively.
It is understood that in the embodiments later in the present application, the first position, the second position, and the unfolded state and the folded state all refer to the relative positions of the rotating shaft 20 and the housing 10.
As shown in fig. 2, the folding device is in the unfolded state, and thus the flexible screen 30 is also in the unfolded state, and the rotating shaft 20 is in the first position, and as shown in fig. 3, the folding device is in the folded state, and thus the flexible screen 30 is also in the folded state, and the rotating shaft 20 is in the second position. The control unit applies current to the coil 21 according to signals collected by the angle sensor 12, the coil 21 is acted by ampere force in a magnetic field, and then the rotating shaft 20 is acted by torque to generate power for driving the rotating shaft 20 to rotate or damping force for preventing the rotating shaft 20 from rotating.
When the state of the folding device is changed, namely the folding device is changed from the unfolding state to the folding state, or the folding device is changed from the folding state to the unfolding state, a user firstly presses a key, the control unit responds to the triggering of the key and judges the current position of the rotating shaft 20 according to the signal of the angle sensor 12, namely after the control unit judges the current state of the folding device, voltage is applied to the coil 21, and then the rotating shaft 20 is driven to rotate to drive the folding state to change the state. For example, in the unfolded state shown in fig. 2, the control unit controls the rotating shaft 20 to rotate 180 degrees counterclockwise, so that the folding device is changed into the folded state, the process is an automatic mode, the control unit can precisely regulate and control the current value and further control the rotating speed and the torque of the rotating shaft 20, the folding device has the characteristics of stable rotating speed and balanced force, the uncontrollable property of manual folding and unfolding of the folded product can be effectively improved in the working mode, and meanwhile, the service life of devices in the bending area can be greatly prolonged by automatically controlling the folding and unfolding.
When the user does not press a key but manually unfolds or folds the folding device of the present invention, the force sensor 23 first collects a torque signal, the control unit judges that the state of the folding device is manually changed according to the signal collected by the force sensor 23, and applies a current to the coil 21 according to the signal collected by the angle sensor 12, so that the coil 21 generates a damping force that hinders the rotation of the rotating shaft 20 with respect to the housing 10, and the damping force hinders the folding or unfolding of the folding device.
For example, in the unfolded state shown in fig. 2, when the user manually folds the folding device of the present invention, the force sensor 23 transmits the collected signal to the control unit, the control unit determines that the folding device is in the manual mode according to the signal, and the control unit applies a current to the coil 21 when determining that the folding device is in the unfolded state according to the signal collected by the angle sensor 12, so that the coil 21 generates a damping force for preventing the rotation of the rotating shaft 20, that is, a damping force for preventing the counterclockwise rotation of the rotating shaft 20.
Further, the control unit obtains the rotation speed of the rotating shaft 20 according to the signal collected by the angle sensor 12, and judges the relationship between the rotation speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold, applying a constant current of the preset threshold to the coil 21 so that the coil 21 generates a damping force of the preset value for preventing the rotating shaft 20 from rotating;
if the rotation speed is greater than the preset threshold value, a current is applied to the coil 21, so that the coil 21 generates a damping force which hinders the rotation of the rotating shaft 20 and is positively correlated with the rotation speed. That is, in the manual mode, if the folding device is folded or unfolded more quickly, the coil 21 generates a larger damping force, and the uncontrollable manual folding of the folded product can be effectively improved in the working mode.
The force sensor 23 is used for acquiring external force applied by a user when the hinge works in a manual mode, the control unit calculates values acquired from the sensor by adopting a data fusion algorithm to obtain current values for compensating the non-uniform external force and applies the current values to the coil 21, so that the moment and the rotating speed of the rotating shaft 20 are dynamically adjusted in the manual mode, the defects of unbalanced force and non-uniform speed of different users at terminals and even the same user are compensated, the folding device can be unfolded or folded at a constant speed, and the bending service life of a folded product can be greatly prolonged.
The shell 10 in this embodiment is substantially cylindrical, and the radius of the shell is equal to or slightly larger than the bending radius of the flexible screen 30, which is beneficial to supporting the bending area of the screen body and preventing the screen body from forming a recess, thereby solving the problem that the light rays generate different reflections at the edge of the bending area and the middle recess area to cause the indentation of the bending area visible to human eyes.
The invention also provides a control method of the folding device, which comprises the following steps:
the control unit applies current to the coil 21 according to the signal collected by the angle sensor 12, so that the coil 21 is acted by ampere force in the magnetic field, and the rotating shaft 20 is acted by torque to generate power for driving the rotating shaft 20 to rotate or damping force for preventing the rotating shaft 20 from rotating.
Further, applying, with the control unit, a current to the coil 21 according to the signal acquired by the angle sensor 12 comprises: the control unit applies current to the coil 21 according to an external control signal and a signal acquired by the angle sensor 12, so that the coil 21 generates power for driving the rotating shaft 20 to rotate relative to the shell 10, and the folding device is driven to fold or unfold by driving the rotating shaft 20 to rotate. The external control signal may be a trigger signal formed by a user pressing a key, and the like, and the control unit determines that the folding device is in an automatic mode according to the signal, determines the current state of the folding device through the angle sensor 12, and drives the rotating shaft 20 to rotate, thereby driving the folding device to fold or unfold. Under this mode, the control unit can accurate regulation and control current value and then control the rotational speed and the moment of torsion of pivot 20, has the characteristics that the rotation is at the uniform velocity stable, strength is balanced, can effectively improve the manual folding uncontrollable nature that opens and shuts of folding product under this mode of operation, and automatically controlled automatic opening and shutting can promote the regional device life of buckling to a very big extent simultaneously.
Further, the control unit responds to the signal collected by the force sensor 23 and applies a current to the coil 21 according to the signal collected by the angle sensor 12, so that the coil 21 generates a damping force that resists the rotation of the rotating shaft 20 relative to the housing 10, and the damping force resists the folding or unfolding of the folding device.
The control unit obtains the rotating speed of the rotating shaft 20 according to the signal collected by the angle sensor 12, and judges the relation between the rotating speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold value, applying current to the coil 21 so that the coil 21 generates a preset damping force for resisting the rotation of the rotating shaft;
if the rotating speed is greater than the preset threshold value, applying current to the coil 21 so that the coil 21 generates a damping force which hinders the rotation of the rotating shaft and is positively correlated with the rotating speed.
The force sensor 23 is used for acquiring external force applied by a user when the hinge works in a manual mode, the control unit calculates values acquired from the sensor by adopting a data fusion algorithm to obtain current values for compensating the non-uniform external force and applies the current values to the coil 21, so that the moment and the rotating speed of the rotating shaft 20 are dynamically adjusted in the manual mode, the defects of unbalanced force and non-uniform speed of different users at terminals and even the same user are compensated, the folding device can be unfolded or folded at a constant speed, and the bending service life of a folded product can be greatly prolonged.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (14)
1. A hinge, comprising: the magnetic induction type wire winding machine comprises a shell, a rotating shaft and a control unit, wherein the shell is provided with an accommodating space, the rotating shaft is accommodated in the accommodating space and is rotatably connected with the shell, a magnet and an angle sensor is arranged in the shell and is used for measuring the rotating angle of the rotating shaft, the magnet is used for forming a magnetic field with magnetic induction lines distributed along the radial direction of the rotating shaft, a coil positioned in the magnetic field is arranged on the rotating shaft, when the rotating shaft rotates, the coil cuts the magnetic induction lines, a plurality of first supporting arms extending along the radial direction of the shell are arranged on the outer side surface of the shell, a plurality of second supporting arms extending along the radial direction of the rotating shaft are arranged on the rotating shaft, an opening is formed in the shell, the end parts of the second supporting arms penetrate through the opening and are positioned on the outer side of the shell, and the control unit is configured to apply current to the coil according to signals collected by the angle sensor.
2. The hinge of claim 1, wherein the control unit is configured to apply a current to the coil based on an external control signal and a signal collected by the angle sensor to cause the coil to generate a motive force that drives the shaft to rotate relative to the housing. { user key, the control unit enables application of current to generate power in response to activation of the key.
3. The hinge according to claim 1, wherein the first and/or second support arm is provided with a force sensor connected to the control unit.
4. The hinge of claim 3, wherein the control unit is configured to apply a current to the coil based on the signal collected by the force sensor and the signal collected by the angle sensor to cause the coil to generate a damping force that resists rotation of the shaft relative to the shell.
5. The hinge of claim 4, wherein the control unit being configured to apply a current to the coil based on the signals collected by the force sensor and the angle sensor to cause the coil to generate a damping force that resists rotation of the shaft relative to the shell comprises:
the control unit is configured to acquire the rotating speed of the rotating shaft according to the signals collected by the angle sensor when receiving the signals collected by the force sensor, and judge the relation between the rotating speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold value, applying current to the coil so as to enable the coil to generate a preset damping force for resisting the rotation of the rotating shaft;
and if the rotating speed is greater than the preset threshold value, applying current to the coil so as to enable the coil to generate damping force which hinders the rotation of the rotating shaft and is positively correlated with the rotating speed.
6. The hinge of claim 1, wherein the magnet and the coil are each provided in plurality, the magnet forming a plurality of the magnetic fields, each of the magnetic fields having the coil disposed therein.
7. The hinge according to claim 1, wherein the housing and the shaft are provided in two, and the two housings are fixedly connected side by side so that the shafts are arranged parallel to each other.
8. A folding apparatus, comprising:
a hinge according to any one of claims 1 to 7, configured to fold or unfold the folding device;
a flexible screen disposed on a surface of the folding device, the flexible screen being folded or unfolded as the folding device is folded or unfolded.
9. The folding apparatus of claim 7, wherein the first support arm and the second support arm of the hinge are each connected to a center frame of the flexible screen.
10. The folding apparatus of claim 7, wherein the housing of the hinge is shaped as a cylinder with a radius equal to the bending radius of the flexible screen after folding.
11. A method of controlling a folding apparatus according to any one of claims 8 to 10, comprising:
and applying current to the coil by the control unit according to the signals collected by the angle sensor.
12. The method of claim 11, wherein said applying, with the control unit, a current to the coil according to the signal acquired by the angle sensor comprises: and applying current to the coil by using the control unit according to an external control signal and a signal acquired by the angle sensor so as to enable the coil to generate power for driving the rotating shaft to rotate relative to the shell, and driving the rotating shaft to rotate to drive the folding device to fold or unfold.
13. The method of claim 11, wherein the control unit is responsive to signals collected by the force sensor and applies a current to the coil based on signals collected by the angle sensor to cause the coil to generate a damping force that resists rotation of the shaft relative to the housing, the damping force resisting folding or unfolding of the folding device.
14. The method according to claim 13, wherein the control unit obtains the rotation speed of the rotating shaft according to the signal collected by the angle sensor, and determines the relationship between the rotation speed and a preset threshold value:
if the rotating speed is less than or equal to the preset threshold value, applying current to the coil so as to enable the coil to generate a preset damping force for resisting the rotation of the rotating shaft;
and if the rotating speed is greater than the preset threshold value, applying current to the coil so as to enable the coil to generate damping force which hinders the rotation of the rotating shaft and is positively correlated with the rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111424349.4A CN113958598B (en) | 2021-11-26 | 2021-11-26 | Hinge, folding device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111424349.4A CN113958598B (en) | 2021-11-26 | 2021-11-26 | Hinge, folding device and control method thereof |
Publications (2)
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| CN113669358A (en) * | 2021-08-30 | 2021-11-19 | 腾壶科技(东莞)有限公司 | Movable hinge structure and unfolding and folding method thereof |
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| JP2008199215A (en) * | 2007-02-09 | 2008-08-28 | Nec Corp | Cellular phone |
| US20090144934A1 (en) * | 2007-12-11 | 2009-06-11 | Wataru Kitagawa | Magnetic hinge for electronic devices |
| CN105569479A (en) * | 2015-12-15 | 2016-05-11 | 张政阳 | Electromagnetic linear damping hinge and corresponding door and window device |
| CN105674013A (en) * | 2016-03-18 | 2016-06-15 | 费博钊 | Supporting device and display device |
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| CN113958598B (en) | 2023-02-07 |
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