CN110562465A - reversible screen display system and control method thereof - Google Patents
reversible screen display system and control method thereof Download PDFInfo
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- CN110562465A CN110562465A CN201910975119.3A CN201910975119A CN110562465A CN 110562465 A CN110562465 A CN 110562465A CN 201910975119 A CN201910975119 A CN 201910975119A CN 110562465 A CN110562465 A CN 110562465A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000002441 reversible effect Effects 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 14
- 238000004146 energy storage Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 9
- 230000007306 turnover Effects 0.000 abstract description 32
- 230000005540 biological transmission Effects 0.000 description 14
- 230000006698 induction Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000036828 Device occlusion Diseases 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/0015—Arrangements for entertainment or communications, e.g. radio, television
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/008—Adjustable or movable supports
- B60R2011/0085—Adjustable or movable supports with adjustment by rotation in their operational position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/008—Adjustable or movable supports
- B60R2011/0092—Adjustable or movable supports with motorization
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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to the technical field of mechanical control, in particular to a reversible screen display system and a control method thereof. The turnover screen display system comprises a display with a rotating shaft at the end part and a turnover mechanism for controlling the turnover of the display, wherein the turnover mechanism comprises a motor, a gearbox, a brake and a power output shaft; the display rotating shaft is sleeved with a sector gear, the sector gear is meshed with a second circular gear, the second circular gear is meshed with a first circular gear, and the reference circle size of the first circular gear is smaller than that of the sector gear. The turnover screen display system and the control method thereof solve the problem that the turnover control of a large screen display cannot be safely and effectively realized in a limited space.
Description
Technical Field
The application relates to the technical field of mechanical control, in particular to a reversible screen display system and a control method thereof.
background
at present, with the high-speed innovation and development of electronic technology and the continuous improvement of living standard of people, people are increasingly pursuing the enjoyment of a large-screen-size display with a wide field of view, which is embodied in various scenes capable of using the display, such as a display above a passenger cabin seat of an airplane for passengers to watch, a vehicle-mounted display and the like.
a display that is used for aircraft cabin seat top to supply the passenger to watch needs to adopt tilting mechanism, makes it can overturn downwards and open the screen to towards the place ahead of passenger's sight, in order for the passenger to watch, still need it to overturn upwards and retrieve and receive the position of accomodating, generally is the position that does not hinder the passenger, when making it provide convenience for the passenger, does not hinder the passenger and freely move in the aircraft cabin. The existing display generally adopts the traditional four-bar linkage transmission mode to control the turnover of the display, but because the torque transmission ratio of the four-bar linkage is basically 1:1, and the current demand for the large screen size of the display leads the display to have greatly increased size and weight when compared with the original small screen size display, if the display is successfully carried with a large screen and is smoothly controlled to turn over, if the traditional four-bar linkage transmission mode is adopted, the size of the four-bar linkage mechanism must be increased in the same ratio, and the weight and the volume are increased, however, the corresponding installation space of the turnover display is strictly limited, such as the space above the aircraft seat, the vehicle-mounted space and the like, even if the limited space can accommodate the large-size four-bar linkage mechanism, the corresponding design and assembly of other matching structures can be greatly restricted, the difficulty is increased greatly, and even if the difficulty is too small, the phenomenon that the equipment exceeds the standard can also occur. In addition, the volume and the weight of the four-bar linkage mechanism with the increased size are overlarge, so that the weight of the whole system is overlarge, the safety is low, and the trend of pursuing a lightweight standard of the transmission system at present is not met; furthermore, a clutch with a large volume and a large weight is generally used as a device for protecting the transmission mechanism, which also does not meet the light weight standard.
disclosure of Invention
the application provides a turnover screen display system and a control method thereof, which aim to solve the problem that the turnover control of a large screen display cannot be safely and effectively realized in a limited space.
a first aspect of the present application provides a reversible screen display system comprising:
a display that a tip is equipped with the pivot, and control the display winds the tilting mechanism of pivot upset, tilting mechanism includes: a motor; the gearbox is assembled and connected with the output end of the motor; and a brake electrically connected with the motor; and
the power output shaft extends out of the gearbox along the direction far away from the motor, a torque limiter and a torsion spring are sequentially sleeved outside the power output shaft, the torsion spring is connected with the power output shaft in a torsion mode, the torsion direction is the same as the closing direction of the display, and one end, far away from the gearbox, of the power output shaft is connected with a first circular gear in an assembly mode; and
The utility model discloses a display device, including display pivot, fan-shaped gear and second circular gear mesh, the outside cover of display pivot is established and is connected with the upset radian of display is the same, and the position of its two spacing ends corresponds the open position and the closed position setting of display, just fan-shaped gear is connected with the second circular gear mesh, the second circular gear with first circular gear mesh is connected, just first circular gear's reference circle size is less than fan-shaped gear's reference.
Compared with the prior art, the screen display system's that this application provided tilting mechanism has adopted gear drive's mode to realize the display upset, the pivot and a sector gear cover of this display are established and are connected, this sector gear meshes each other with the first circular gear that is connected with power output shaft through a second circular gear and links to each other, and this first circular gear's reference circle size is less than this sector gear's reference circle size, it can increase transmission moment proportion promptly, be greater than four link mechanism's among the prior art moment transmission 1:1, the mechanical property of the turnover mechanism is improved, so that the turnover mechanism can easily drive a large-screen-size display under the condition of not increasing the sizes of devices such as a motor, a brake, a torque limiter, a torsion spring and the like, and the turnover work of the large-size and heavy-weight display in a limited space is easily realized. And moreover, the torque limiter sleeved outside the power output shaft can improve the safety of the display in the turning process, when the display is subjected to resistance in the opening process, the torque limiter can control the power output shaft to drive the rotating shaft of the display to generate reverse relative sliding and enable the display to rotate reversely for a certain angle and then rotate forwards again, and if the display is still blocked, the display automatically returns to the closing position to be in a safe state, so that the safety performance of the display is improved. The motor connected with the power output shaft can provide power support for turning, and the gearbox connected with the motor output end in an assembled mode can reduce the rotating speed of the motor and increase torque, so that the turning working efficiency is improved. After the display is opened to a designated position, starting a brake electrically connected with the motor to keep the display at the opened position; during the opening process of the display, a torsion spring connected to the power output shaft is sleeved for torsion energy storage, when the display needs to be closed, the brake control is closed, the torsion spring automatically releases the torsion energy storage, the display is retracted to the closed state position, and when the torsion spring is assembled, the torsion spring and the power output shaft apply torsion connection in the same direction as the closing direction of the display, a certain torsion force is preloaded, the display can be closed in place, and the closed position can be stably attracted. The turnover screen display system solves the problem that in the prior art, the turnover control of a large screen display cannot be safely and effectively realized in a limited space.
Further, the reversible screen display system further comprises: the brake device comprises a control module electrically connected with the brake, and an angle sensor electrically connected with the control module, wherein the first circular gear is also in meshed connection with a third circular gear, and the angle sensor is connected with a central shaft of the third circular gear.
therefore, the angle sensor can accurately sense the opening angle of the display at any time, sense the overturning state of the display at any time, and send the sensing result to the control module electrically connected with the angle sensor, and the control module can enable a user to sense the state of the display at any time in a mode of reporting to a background processing system and the like, so that the monitoring and timely fault condition processing are facilitated; whether this angle sensor operates and hinders through perception this third circular gear and can learn the display upset process and break down, when it perceives that third circular gear operates and hinders, can send equipment to the control module who is connected with it electricity and hinder the notice to can report the angle of being hindered to this control module simultaneously, control module can inform again for the user. Therefore, the user can also know the information of the fault of the display in time and can process the information in time, and the safety of the display is improved.
furthermore, a control substrate which can be attached to the display is fixedly arranged at the closed position of the display, the control module is arranged inside the control substrate, a button switch which is electrically connected with the control module is arranged on the outer surface of the control substrate, the pressing end of the button switch protrudes out of the lower plate surface of the control substrate, the lower plate surface faces the display, and the control module is further electrically connected with the motor.
Therefore, when the display is in a good closed state, the pressing end of the button switch protruding out of the lower plate surface of the control substrate is triggered, the button switch is automatically started, and the display is sensed to be in the good closed state; if the display is not in the closed state, the display does not touch the pressing end of the button switch, and the button switch is in the closed state. The intelligence and the real-time performance of the system are enhanced, and the safety of the display is improved.
Furthermore, the other side of the display opposite to the side where the rotating shaft is arranged is provided with a lock hole,
An electromagnetic valve is arranged at the position of one side of the control substrate facing the display and corresponding to the lock hole, a slide rod of the electromagnetic valve can be inserted into the lock hole and locked,
the solenoid valve is electrically connected with the control module.
therefore, when the display is in a closed state, the display can be automatically locked, and the locking device is reliable, safe, intelligent and efficient.
Furthermore, the motor, the resistor and the diode form an electromagnetic damping loop, and the electromagnetic damping loop is closed when the motor and the brake are both in a power-off state.
When the display in the opening state needs to be closed to the closing state, the motor is powered off, the motor rotates reversely under the action of the torsion spring to close the display, at the moment, the motor, the resistor and the diode form a closed loop to generate induction current, the induction current further generates a magnetic field to block the motor from rotating, and therefore the rotating speed of the motor is reduced, the effect that the display is slowly retracted to the closing state is achieved, and the display is further protected.
Furthermore, a first flat key is arranged at the joint of the power output shaft and the first circular gear, and a first key groove matched with the first flat key is arranged at the corresponding position of the inner surface of the first circular gear; and/or
and a second flat key is arranged at the joint of the rotating shaft and the sector gear, and a second key groove matched with the second flat key is arranged at the corresponding position of the inner surface of the second circular gear.
The mode that comes transmission torque through flat key and the mutual extrusion of keyway that corresponds like this comes first circular gear and/or second circular gear to radially spacing, further guarantees its operation that can be good normal, and this kind of structure of flat key and keyway complex has simple structure, and easy dismounting bears the advantage that has that variable load, shock-absorbing capacity are strong.
Furthermore, the turnover screen display system also comprises a flange bearing bracket provided with a flange bearing, and the flange bearing is matched with the sector gear;
the second circular gear cover is established to rotate and is connected on a supporting shaft, and in it is close to respectively still to overlap on the supporting shaft two bearings that the second circular gear both sides set up, the supporting shaft is close to sector gear's tip fixed connection in flange bearing bracket.
The combined action of the flange bearing and the flange bearing bracket achieves the effect of limiting the sector gear, and further ensures that the sector gear can operate well and normally;
The two bearings limit the axial direction of the second circular gear, so that the good normal operation of the second circular gear is further ensured, and the limiting mode is simple, direct and reliable and is convenient to implement.
a second aspect of the present application provides a control method of a reversible screen display system, based on any one of the foregoing reversible screen display systems, the method comprising the steps of:
Step S1, turning on the motor to electrify, controlling the output speed and torque through the gearbox, driving the power output shaft to rotate, further driving the first circular gear connected with the power output shaft to rotate, further driving the second circular gear meshed with each other and the sector gear connected with the display rotating shaft to rotate in sequence, and turning the display to open under the driving of the rotating shaft; meanwhile, in the process of opening the display, the torsion spring connected to the power output shaft is sleeved for torsion energy storage; meanwhile, if the display is opened, the power output shaft is controlled by the torque limiter to reversely slide, the display is driven to reversely rotate for a certain angle, then the display is turned over and opened again, and if the resistance is received again, the power output shaft is controlled by the torque limiter to reversely rotate the display to a closed position;
Step S2, when the display is opened to a preset angle, the motor is closed, the brake is started, and the display is kept in an open state of the preset angle;
And step S3, when the display needs to be closed to a closed state, the brake is closed, the torsion spring automatically releases the torsion energy storage to drive the power output shaft to rotate, and the first circular gear, the second circular gear, the sector gear and the rotating shaft are sequentially driven to rotate, so that the display is turned over to a closed position.
the control method of the turnover screen display system solves the problem that the turnover control of the large screen display cannot be safely and effectively realized in a limited space in the prior art.
Further, before the step S1 of turning on the motor power running, the method further includes: the button switch judges whether the display is in a closed state or not by judging whether the button switch is in a starting state or a closing state, if the button switch is in the starting state, the display is in the closed state, a control module electrically connected with the button switch controls an electromagnetic valve electrically connected with the button switch to be opened so that the electromagnetic valve is locked with the display, the motor is also controlled to be electrified and started, and if the button switch is in the closing state, the display is in the non-closing state, and the button switch sends a device fault notification to the control module;
after the step S3, a step S4 is further included, if the button switch determines that it is in the activated state, and it is known that the display is in the closed state, and the result is transmitted to the control module, and the control module controls the electromagnetic valve to lock the display, and turns off the motor to stop the operation; and if the button switch judges that the button switch is in the closed state within the preset closing time, sending an equipment fault notification to the control module.
therefore, the button switch can automatically know whether the display is in a good closed state or not through whether the button switch is in a starting state or not, the intelligence and the real-time performance of the system are enhanced, and the safety of the display is improved. And when the display is in a closed state, the display can be automatically locked, so that the locking device is reliable, safe, intelligent and efficient.
Further, in step S1, the method further includes: when the display is opened and is subjected to resistance in the overturning process, the angle sensor is connected with a third circular gear in meshed connection with the first circular gear to obtain a blocked angle, and the blocked angle is reported to a control module electrically connected with the angle sensor;
the step S2 further includes: the angle sensor senses the opening angle of the display, when the opening angle is a preset opening angle, the angle sensor reports the result to the control module, and the control module controls the motor to be turned off and the brake to be turned on.
Therefore, the angle sensor can accurately sense the opening angle of the display at any time, sense the overturning state of the display at any time, and send the sensing result to the control module electrically connected with the angle sensor, and the control module can enable a user to sense the state of the display at any time in a mode of reporting to a background processing system and the like, so that the monitoring and timely fault condition processing are facilitated; whether this angle sensor operates and hinders through perception this third circular gear and can learn the display upset process and break down, when it perceives that third circular gear operates and hinders, can send equipment to the control module who is connected with it electricity and hinder the notice to can report the angle of being hindered to this control module simultaneously, control module can inform again for the user. Therefore, the user can also know the information of the fault of the display in time and can process the information in time, and the safety of the display is improved.
it is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
drawings
FIG. 1 is a schematic diagram of a display of a reversible screen display system in a closed state according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a display of a reversible screen display system in an open state according to an embodiment of the present application;
FIG. 3 is a schematic view of a part of a structure of a turnover mechanism provided in an embodiment of the present application;
FIG. 4 is an exploded view of a portion of a reversible screen display system according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a connection of an electromagnetic damping circuit provided in an embodiment of the present application;
FIG. 6 is a flow chart of a method for controlling a display of a reversible screen display system according to an embodiment of the present application;
fig. 7 is a flowchart illustrating a method for turning off a display in a control method of a flippable screen display system according to an embodiment of the present application.
reference numerals:
10-a display;
11-a rotating shaft;
111-a second flat bond;
21-a motor;
22-braking;
23-a gearbox;
24-a power take-off shaft;
241-a first flat bond;
30-a torque limiter;
40-torsion spring;
50-gear set;
51-a first circular gear;
511-a first keyway;
52-a second circular gear;
53-third circular gear;
54-sector gear;
541-a limiting end;
542-second keyway;
60-angle sensor;
71-flange bearing support;
72-flange bearing;
73-support shaft;
74-a bearing;
75-a limit cover plate;
80-a control substrate;
81-a control module;
82-a push-button switch;
83-solenoid valve;
84-resistance;
85-diode;
86-MOS controller.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
as shown in fig. 1-5, the reversible screen display system includes a display 10, where the display 10 may be a large-sized screen display 10, and one end of the display 10 is provided with a rotating shaft 11, and may be specifically disposed at an upper end, a lower end, and a side end of the display, and the application is described by taking an example where the rotating shaft 11 is disposed at the upper end of the display 10; the reversible screen display system further includes a turnover mechanism for controlling the turnover of the display 10 about the rotation axis 11, and the turnover mechanism may include a motor 21; the gearbox 23 is assembled and connected with the output end of the motor 21, the gearbox 23 can be a gearbox, and the gearbox 23 can increase the torque of the motor 21 while reducing the rotating speed of the motor, so that the overturning working efficiency is improved; and a brake 22 electrically connected to the motor 21, wherein the brake 22 can control the display 10 to maintain the open position, and the brake 22 can be disposed at the rear of the motor 21.
A power output shaft 24 is arranged by extending out of the gearbox 23 along the direction far away from the motor 21, a torque limiter 30 and a torsion spring 40 are sequentially sleeved outside the power output shaft 24, when the power output shaft is assembled, the torsion spring 40 applies a certain torsion to the power output shaft 24, namely, the torsion is connected with the power output shaft 24, the torsion direction is the same as the closing direction of the display 10, so that the display 10 can be ensured to be stably attracted at the closing position in the closing state, the closing position is in place, furthermore, when the display 10 is opened, the torsion spring 40 carries out torsion energy storage, and when the display 10 is closed, the torsion energy storage can be released by the torsion spring 40 to be automatically retracted to the closing state; the torque limiter 30 can control the power output shaft 24 to drive the rotating shaft 11 to generate a reverse relative sliding and make the display 10 reverse a certain angle when the display 10 is subjected to resistance in the opening process, and then, the display 10 is rotated forward again, and if the display 10 is still blocked, a reverse rotating force is applied again to drive the display 10 to automatically return to the closing position, so that the display is in a safe state, and the safety performance of the display is improved.
the reversible screen display system further comprises a gear set 50, wherein the gear set 50 comprises a first circular gear 51, a second circular gear 52, a third circular gear 53 and a sector gear 54, the first circular gear 51 is sleeved and connected with one end, away from the gearbox 23, of the power output shaft 24, and the second circular gear 52 is respectively in meshed connection with the first circular gear 51 and the sector gear 54; the sector gear 54 is sleeved on the rotating shaft 11 of the display 10, the radian of the sector gear 54 is the same as the turning radian of the display 10, and the positions of the two limiting ends 541 are respectively arranged corresponding to the opening position and the closing position of the display 10; and the reference circle size of the first circular gear 51 is smaller than that of the sector gear 54, so that the transmission torque ratio can be increased, and the transmission torque ratio is larger than that of the torque transmission 1 of the four-bar mechanism in the prior art: 1, the mechanical property of the turnover mechanism is improved, so that the turnover mechanism can easily drive a large-screen-size display under the condition that the sizes of the devices such as the motor 21, the brake 22, the torque limiter 30, the torsion spring 40 and the like are not increased, and the turnover work of the large-size and heavy-weight display 10 in a limited space is easily realized.
correspondingly, as shown in fig. 6 and 7, the control method of the reversible screen display system mainly comprises the following steps:
step S1, starting the motor to electrify, controlling the output speed and torque through the gearbox, driving the power output shaft to rotate, further driving the first circular gear connected with the power output shaft to rotate, further driving the second circular gear meshed with each other and the sector gear connected with the display rotating shaft to rotate in sequence, and turning the display to open under the driving of the rotating shaft; meanwhile, in the process of opening the display, a torsion spring connected to the power output shaft is sleeved for torsion energy storage; meanwhile, if the display is opened, the power output shaft is controlled by the torque limiter to reversely slide, the display is driven to reversely rotate for a certain angle, then the display is turned over and opened again, and if the resistance is received again, the power output shaft is controlled by the torque limiter to reversely rotate the display to a closed position;
step S2, when the display is opened to a preset angle, the motor is closed, the brake is started, and the display is kept in an open state of the preset angle;
And step S3, when the display needs to be closed to a closed state, the brake is closed, the torsion spring automatically releases the torsion energy storage to drive the power output shaft to rotate, and the first circular gear, the second circular gear, the sector gear and the rotating shaft are sequentially driven to rotate, so that the display is turned over to a closed position.
Compared with the prior art, the screen display system and the control method thereof provided by the embodiment of the application realize the overturning of the large-size screen display in a gear set transmission mode, can increase the transmission torque proportion, and are greater than the torque transmission 1 of the four-bar mechanism in the prior art: 1, the mechanical property of the turnover mechanism is improved, so that the turnover mechanism can easily realize the turnover work of a large-size and heavy-weight display 10 in a limited space, and moreover, the torque limiter improves the safety of the system, has smaller volume and weight compared with the existing clutch with a protection function, and meets the requirement of light weight. When the torsion spring is assembled, the torsion spring is connected with the power output shaft by applying torsion in the same direction as the closing direction of the display, and certain torsion is preloaded, so that the display can be stably attracted to the closing position to be closed in place. The turnover screen display system and the control method thereof solve the problem that the turnover control of a large screen display cannot be safely and effectively realized in a limited space in the prior art.
furthermore, the reversible screen display system may further include a control module 81 electrically connected to the brake 22, and an angle sensor 60 electrically connected to the control module 81, the angle sensor 60 is connected to the central shaft of the third circular gear 53, the third circular gear 53 is further engaged with the first circular gear 51, so that the angle sensor 60 may accurately sense the opening angle of the display 10 at any time, sense the turning state of the display 10 at any time, and send the sensing result to the control module electrically connected thereto, and the control module may further inform a back-end processing system to enable a user to sense the state of the display at any time, thereby facilitating the monitoring and timely handling of failure conditions; the angle sensor 60 can also sense that the display 10 is opened to a preset angle, and report to the control module 81 to turn off the motor 21 and turn on the brake 22 to keep the display 10 in an open state of the preset angle; and the angle sensor 60 can know whether the display 10 is in failure in the overturning process by sensing whether the third circular gear 53 is blocked in operation, and when sensing that the third circular gear 53 is blocked in operation, the angle sensor sends a notice of device blockage to a control module 81 electrically connected with the angle sensor, and can simultaneously report the blocked angle to the control module 81.
the corresponding method is that, in step S1, the method further includes: when the display is opened and is turned over to be subjected to resistance, the angle sensor is connected with the third circular gear in meshed connection with the first circular gear to know the blocked angle, and the blocked angle is reported to the control module electrically connected with the angle sensor. Step S2 further includes: the angle sensor senses the opening angle of the display, when the opening angle is the preset opening angle, the angle sensor reports the result to the control module, and the control module controls the motor to be turned off and the brake to be turned on.
further, a control substrate 80 may be fixedly disposed at a closed position of the display 10, and when the display 10 is in a closed state, the control substrate 80 is attached to the control module 81, the control module 81 may be disposed inside the control substrate 80, and disposed near the turnover mechanism, and electrically connected to the motor 21, the brake 22, the angle sensor 60, the button switch 82, and the solenoid valve 83, the button switch 82 is disposed on an outer surface of the control substrate 80, and a pressing end of the button switch 82 protrudes from a lower plate surface of the control substrate 80, and the lower plate surface faces the display 10, when the display 10 is in the closed state, the display 10 is attached to the lower plate surface, and the control module 81 is further electrically connected to the motor 21. Thus, when the display 10 is in a good closed state, the pressing end of the button switch 82 protruding from the lower board surface of the control board 80 is triggered, and the button switch 82 is automatically started, so that the display 10 is sensed to be in a good closed state; if the display 10 is not in the closed state, the display 10 will not touch the pressing end of the push button switch 82, and the push button switch 82 will be in the closed state. The setting mode enhances the intelligence and the real-time performance of the system and also improves the safety of the display.
furthermore, the other side of the display 10 opposite to the side where the rotating shaft 11 is located may be provided with a locking hole, and correspondingly, the side of the control substrate 80 facing the display 10 and the corresponding position of the locking hole may be provided with an electromagnetic valve 83, a sliding rod of the electromagnetic valve 83 may be inserted into the locking hole and locked, and the electromagnetic valve 83 is electrically connected to the control module 81. Therefore, when the display 10 is in a closed state, the display can be automatically locked, and the locking device is reliable, safe, intelligent and efficient.
as shown in fig. 6 and 7, the method further includes, before the step S1 of turning on the motor power running: the button switch judges whether the display is in a closed state or not by judging whether the button switch is in a starting state or a closing state, if the button switch is in the starting state, the display is in the closed state, the control module electrically connected with the button switch controls the electromagnetic valve electrically connected with the button switch to be opened so that the electromagnetic valve is locked with the display, the motor is also controlled to be electrified and started, and if the button switch is in the closing state, the display is in the non-closed state, and the button switch sends equipment fault notification to the control module;
After the step S3, a step S4 is further included, if the button switch determines that it is in the on state, and it is known that the display is in the off state, and the result is transmitted to the control module, the control module controls the electromagnetic valve to lock the display, and the motor is turned off to stop the operation; and if the button switch judges that the button switch is in the closed state within the preset closing time, sending an equipment fault notification to the control module.
in order to further protect the display, as shown in fig. 5, the motor 21 may further form an electromagnetic damping loop with a resistor 84 and a diode 85, and in a state where both the motor 21 and the brake 22 are powered off, the electromagnetic damping loop may be closed by opening the control module 81, and a MOS controller 86 may be specifically connected in parallel with the electromagnetic damping loop, and G is a control terminal of the MOS controller 86, so that the loop is more easily closed.
The corresponding method includes, in step S3, after the brake is turned off, further including: an electromagnetic damping loop formed by the motor, the resistor and the diode is closed to generate induction current, and the induction current further generates a magnetic field to block the motor from running.
when the display 10 in the open state needs to be closed to the closed state, the motor 21 is powered off, the motor 21 rotates reversely under the action of the torsion spring 40 to close the display 10, at this time, the motor 21, the resistor 84 and the diode 85 form a closed loop to generate induction current, the induction current further generates a magnetic field to block the motor 21 from rotating, and therefore the rotating speed of the motor 21 is reduced, the effect that the display 10 is slowly retracted to the closed state is achieved, and the display 10 is further protected.
As for the gear set 50, as shown in fig. 3 and 4, a first flat key 241 may be provided at the connection position of the power take-off shaft 24 and the first circular gear 51, and a first key slot 511 matching with the first flat key 241 may be provided at the corresponding position of the inner surface of the first circular gear 51. Similarly, a second flat key 111 may be disposed at the connection position of the rotating shaft 11 and the sector gear 54, and a second key groove 542 matched with the second flat key 111 may be disposed at the corresponding position of the inner surface of the second circular gear 52. The first circular gear 51 and/or the second circular gear 52 are radially limited by the way that the flat keys (the first flat key 241 and/or the second flat key 111) and the corresponding key grooves (the first key groove 511 and/or the second key groove 542) are mutually extruded to transmit torque, so that good and normal operation of the first circular gear 51 and/or the second circular gear 52 can be further ensured.
In a further embodiment, the sector gear 54 may be provided with a flange bearing 72 for supporting the sector gear, the flange bearing 72 is mounted on a flange bearing support 71, and the flange bearing support 71 may be fixed on the control substrate 80, so that the flange bearing 72 and the flange bearing support 71 cooperate to limit the sector gear 54, and further ensure good and normal operation of the sector gear.
In a further embodiment, the second circular gear 52 is rotatably sleeved on a supporting shaft 73, two bearings 74 respectively disposed near two sides of the second circular gear 52 are further sleeved on the supporting shaft 73, and an end of the supporting shaft 73 near the sector gear 54 is fixedly connected to the flange bearing bracket 71. The two bearings 74 limit the axial direction of the second circular gear 52, so as to further ensure good and normal operation, and the limiting mode is simple, direct, reliable and convenient to implement. Furthermore, a limit cover plate 75 may be connected to an axial end surface of the first circular gear 51 and/or the second circular gear 52, so that the first circular gear and/or the second circular gear may function as a protection and dust prevention, and may also function as an axial limit, thereby enabling a good and normal operation.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A reversible on-screen display system, comprising:
a display that a tip is equipped with the pivot, and control the display winds the tilting mechanism of pivot upset, tilting mechanism includes: a motor; the gearbox is assembled and connected with the output end of the motor; and a brake electrically connected with the motor; and
A power output shaft extending out of the gearbox along a direction far away from the motor, wherein a torque limiter and a torsion spring are sequentially sleeved outside the power output shaft, the torsion spring is connected with the power output shaft by applying torsion, the torsion direction is the same as the closing direction of the display, and one end of the power output shaft far away from the gearbox is sleeved with a first circular gear; and
The utility model discloses a display device, including display pivot cover, fan-shaped gear and second circular gear, the display pivot cover is established and is connected with its radian is the same with the upset radian of display, the position of its two spacing ends respectively with the open position and the closed position of display correspond the setting, just fan-shaped gear is connected with the circular gear meshing of second, the circular gear of second with first circular gear meshing is connected, just the reference circle size of first circular gear is less than fan-shaped gear's reference circle size.
2. the reversible screen display system of claim 1, further comprising: the brake device comprises a control module electrically connected with the brake, and an angle sensor electrically connected with the control module, wherein the first circular gear is also in meshed connection with a third circular gear, and the angle sensor is connected with a central shaft of the third circular gear.
3. The reversible screen display system of claim 2,
the display control device comprises a display, a control substrate, a control module and a button switch, wherein the control substrate can be attached to the display is fixedly arranged at the closed position of the display, the control module is arranged in the control substrate, the button switch electrically connected with the control module is arranged on the outer surface of the control substrate, the pressing end of the button switch protrudes out of the lower board surface of the control substrate, the lower board surface faces the display, and the control module is further electrically connected with a motor.
4. a reversible screen display system according to claim 3,
the other side of the display opposite to the side where the rotating shaft is arranged is provided with a lock hole,
an electromagnetic valve is arranged at the position of one side of the control substrate facing the display and corresponding to the lock hole, a slide rod of the electromagnetic valve can be inserted into the lock hole and locked,
The solenoid valve is electrically connected with the control module.
5. the reversible screen display system of claim 1,
The motor, the resistor and the diode form an electromagnetic damping loop, and the electromagnetic damping loop is closed when the motor and the brake are in a power-off state.
6. the reversible screen display system according to claim 1, wherein a first flat key is arranged at the position where the power output shaft is connected with the first circular gear, and a first key groove matched with the first flat key is arranged at the corresponding position of the inner surface of the first circular gear; and/or
And a second flat key is arranged at the joint of the rotating shaft and the sector gear, and a second key groove matched with the second flat key is arranged at the corresponding position of the inner surface of the second circular gear.
7. the reversible screen display system of claim 1 or 6, further comprising a flange bearing bracket mounted with a flange bearing, the flange bearing being matingly mounted with the sector gear;
the second circular gear cover is established to rotate and is connected on a supporting shaft, and in it is close to respectively still to overlap on the supporting shaft two bearings that the second circular gear both sides set up, the supporting shaft is close to sector gear's tip fixed connection in flange bearing bracket.
8. A control method of a reversible screen display system, based on the reversible screen display system of any one of claims 1 to 7, comprising the steps of:
Step S1, turning on the motor to electrify, controlling the output speed and torque through the gearbox, driving the power output shaft to rotate, further driving the first circular gear connected with the power output shaft to rotate, further driving the second circular gear meshed with each other and the sector gear connected with the display rotating shaft to rotate in sequence, and turning the display to open under the driving of the rotating shaft; meanwhile, in the process of opening the display, the torsion spring connected to the power output shaft is sleeved for torsion energy storage; meanwhile, if the display is opened, the power output shaft is controlled by the torque limiter to reversely slide, the display is driven to reversely rotate for a certain angle, then the display is turned over and opened again, and if the resistance is received again, the power output shaft is controlled by the torque limiter to reversely rotate the display to a closed position;
Step S2, when the display is opened to a preset angle, the motor is closed, the brake is started, and the display is kept in an open state of the preset angle;
and step S3, when the display needs to be closed to a closed state, the brake is closed, the torsion spring automatically releases the torsion energy storage to drive the power output shaft to rotate, and the first circular gear, the second circular gear, the sector gear and the rotating shaft are sequentially driven to rotate, so that the display is turned over to a closed position.
9. The control method of a reversible screen display system according to claim 8,
before the step S1 of "turning on the motor energization operation", the method further includes: the button switch judges whether the display is in a closed state or not by judging whether the button switch is in a starting state or a closing state, if the button switch is in the starting state, the display is in the closed state, a control module electrically connected with the button switch controls an electromagnetic valve electrically connected with the button switch to be opened so that the electromagnetic valve is locked with the display, the motor is also controlled to be electrified and started, and if the button switch is in the closing state, the display is in the non-closing state, and the button switch sends a device fault notification to the control module;
After the step S3, a step S4 is further included, if the button switch determines that it is in the activated state, and it is known that the display is in the closed state, and the result is transmitted to the control module, and the control module controls the electromagnetic valve to lock the display, and turns off the motor to stop the operation; and if the button switch judges that the button switch is in the closed state within the preset closing time, sending an equipment fault notification to the control module.
10. the control method of a reversible screen display system according to claim 8,
in step S1, the method further includes: when the display is opened and is subjected to resistance in the overturning process, the angle sensor is connected with a third circular gear in meshed connection with the first circular gear to obtain a blocked angle, and the blocked angle is reported to a control module electrically connected with the angle sensor;
The step S2 further includes: the angle sensor senses the opening angle of the display, when the opening angle is a preset opening angle, the angle sensor reports the result to the control module, and the control module controls the motor to be turned off and the brake to be turned on.
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| CN201910975119.3A CN110562465A (en) | 2019-10-14 | 2019-10-14 | reversible screen display system and control method thereof |
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| CN201910975119.3A CN110562465A (en) | 2019-10-14 | 2019-10-14 | reversible screen display system and control method thereof |
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| WO2022257031A1 (en) * | 2021-06-09 | 2022-12-15 | 华为技术有限公司 | Device and system for adjusting angle of display screen |
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