WO2014089880A1 - 一种用于液晶显示器展开及收回的装置及其控制方法 - Google Patents

一种用于液晶显示器展开及收回的装置及其控制方法 Download PDF

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Publication number
WO2014089880A1
WO2014089880A1 PCT/CN2012/087297 CN2012087297W WO2014089880A1 WO 2014089880 A1 WO2014089880 A1 WO 2014089880A1 CN 2012087297 W CN2012087297 W CN 2012087297W WO 2014089880 A1 WO2014089880 A1 WO 2014089880A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
electromagnetic clutch
unfolding
retracting
Prior art date
Application number
PCT/CN2012/087297
Other languages
English (en)
French (fr)
Inventor
严志坚
刘蜀华
廖达科
寇含军
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中电科航空电子有限公司
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Application filed by 中电科航空电子有限公司 filed Critical 中电科航空电子有限公司
Priority to US14/651,921 priority Critical patent/US9832416B2/en
Priority to EP12889964.8A priority patent/EP2933545B1/en
Publication of WO2014089880A1 publication Critical patent/WO2014089880A1/zh

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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
    • B60R11/0235—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 of flat type, e.g. LCD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/655—Construction or mounting of chassis, e.g. for varying the elevation of the tube
    • 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
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • F16M13/027—Ceiling supports
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/645—Mounting of picture tube on chassis or in housing
    • 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
    • B60R2011/0082—Adjustable or movable supports collapsible, e.g. for storing after use
    • 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
    • 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

Definitions

  • the invention relates to a device commonly used for unfolding and retracting a liquid crystal display and a control method thereof, which can be applied to video playback of an aircraft cabin entertainment system, video playback on a high speed railway locomotive, video playback on a car, video broadcast on a ship, and public buildings. Video playback.
  • Video playback device on transportation facilities such as airplanes, railways, automobiles, ships, etc.
  • the liquid crystal display is required to be deployed at a prescribed angle to facilitate the passenger to watch the video program; It can be retracted when not in use, saves space, and protects the liquid crystal display, while preventing passengers from accidentally hitting the liquid crystal display and being injured.
  • the cabin entertainment system on the aircraft is more strict, which requires the video playback device to unfold and retract the device.
  • the existing video playback device cannot fully satisfy the above functions, and most of the devices realize the deployment and retrieval of the video playback device through simple power-on and power-off. Or through a simple mechanical structure to realize the expansion and retraction of the video playback device, the corresponding retracting action of the video playback device in the case of various similar power failures, sudden abnormalities, etc., cannot be realized, so that it has certain security during use. Hidden danger At the same time, the existing devices of this type are complicated in structure and do not utilize daily maintenance.
  • the present invention is directed to an apparatus for deploying and retracting a liquid crystal display and a control method thereof, which can be adapted under the premise of normal deployment and retraction during video playback.
  • the automatic retraction of the liquid crystal display in the case of power loss, sudden abnormality, etc., ensures the safe use of the device.
  • the present invention provides a device for deploying and retracting a liquid crystal display, comprising: a rotating shaft connected to the liquid crystal display; and a servo mechanism for driving the liquid crystal display on the rotating shaft, wherein the servo mechanism
  • the utility model comprises a gear motor, a one-way bearing, a electromagnetic clutch, a speed reducer and a planar four-bar linkage mechanism for driving the liquid crystal display on the rotating shaft, wherein the electromagnetic clutch is further connected and connected with a spring motor.
  • the spring motor is electrically connected to the reducer;
  • a deployment position sensor and a retraction position sensor for monitoring a change in position of the liquid crystal display, and an angle sensor for monitoring a change in the deployment speed of the liquid crystal display are disposed in the unfolding and retracting direction of the liquid crystal display;
  • the deployment position sensor, the retraction position sensor, the angle sensor, the gear motor, and the electromagnetic clutch are all electrically connected to a controller.
  • the control method for the device for unfolding and retracting the liquid crystal display is that 1) When the video is playing, the controller controls the gear motor and the electromagnetic clutch to be energized, and the gear motor sequentially drives the one-way bearing, the reducer connected by the electromagnetic clutch, and the planar four-bar linkage mechanism, thereby driving the liquid crystal display to be unfolded, and The position sensor is monitored in real time. When the liquid crystal display is deployed to the set position, the position sensor transmits the signal to the controller. The controller controls the gear motor to be powered off, and ends the unfolding action.
  • the one-way bearing positions the entire transmission mechanism in the expanded state of the liquid crystal display.
  • the spring clutch is driven by the electromagnetic clutch, that is, the subsequent planar scroll spring energy storage; 2), at the end of the video, or power failure, sudden abnormal situation, the controller controls the electromagnetic clutch to be powered off or the electromagnetic clutch is automatically powered off, the electromagnetic clutch is separated, the plane spiral spring in the spring motor is released, and the reverse is sequentially driven
  • the reducer and the plane four-bar linkage mechanism further drive the liquid crystal display to retract.
  • the entire transmission mechanism is positioned by the one-way bearing in the retracted state of the liquid crystal display.
  • the invention realizes the unfolding of the liquid crystal display by the gear motor, the electromagnetic clutch and the speed reducer, the spring motor and the speed reducer realize the retraction of the liquid crystal display, the one-way bearing locates the unfolding and retracting state of the liquid crystal display, and the position sensor is retracted by the position sensor
  • the angle sensor monitors the corresponding state of the liquid crystal display in real time to form different signals to be transmitted to the controller, and then the controller controls the gear motor and the electromagnetic clutch according to the corresponding signals to realize the unfolding of the liquid crystal display or various power failures and sudden abnormalities.
  • the device further includes a common mounting panel having a cavity for horizontally receiving the liquid crystal display and a housing fixed to the opposite surface thereof, the rotating shaft being disposed on the housing and located on the common mounting panel The inner side of the cavity, the servo mechanism is placed in the housing.
  • a mounting bottom plate is fixedly connected to the common mounting panel, and a common mounting panel encloses a cavity for receiving the liquid crystal display, wherein the gear motor, the one-way bearing, the spring motor, the speed reducer and the angle sensor are fixed on the Install the base plate.
  • the electromagnetic clutch is an electromagnetic clutch that is adjustable in engagement retention.
  • the spring motor end is further provided with a damping gear whose damping magnitude is inversely proportional to the number of revolutions.
  • the spring motor comprises a fixing plate and a casing fixed thereto, and a core shaft and a planar spiral spring wound on the mandrel are coaxially arranged in a cavity formed by the casing and the fixing plate, and the front end of the planar spiral spring The ends are respectively fixed on the mandrel and the outer casing; and bearings are arranged at both ends of the mandrel.
  • the spring motor is a spring motor with an adjustable initial torque.
  • the impact force is greater than the engagement holding force of the electromagnetic clutch itself, so that the electromagnetic clutch slips, the position change signal of the liquid crystal display is collected by the deployment position sensor to the controller, and the controller controls the electromagnetic clutch to be powered off.
  • the electromagnetic clutch is disengaged, and the planar scroll spring in the spring motor releases energy, and the reverse speed drive and the planar four-bar linkage mechanism are used to make the liquid crystal display retract.
  • the angle sensor monitors the liquid crystal display expansion speed change signal to the controller, the controller controls the electromagnetic clutch to be de-energized, the electromagnetic clutch is disengaged, and the planar spiral spring in the spring motor is released.
  • the reverse drive speed reducer and the planar four-bar linkage mechanism so that the liquid crystal display is retracted.
  • the device can be applied to liquid crystal displays of different specifications of 15 inches or less; and the electromagnetic clutch slip torque can be set, which can be applied to different external force requirements. To ensure the safe use of liquid crystal displays in different occasions.
  • the invention has the advantages of compact structure, modular design, convenient pre-installation and post-maintenance, low energy consumption, liquid crystal display can realize electric recovery, and can be adjusted to different sizes of liquid crystal display by different adjustment of spring motor starting torque. , Through the different adjustment of the slip torque of the electromagnetic clutch to adapt to the automatic retraction of the liquid crystal display under different external force collisions, to ensure the safe use of the liquid crystal display in different occasions.
  • Figure 1 is a schematic view of the overall structure of the present invention
  • Figure 2 is a schematic view of the internal structure of Figure 1;
  • FIG. 3 is a schematic structural view of the spring motor of FIG. 1.
  • a device for unfolding and retracting a liquid crystal display as shown in FIGS. 1 and 2, comprising a rotating shaft 15 and 16 connected to the liquid crystal display 1, and a servo mechanism for driving the liquid crystal display 1 on the rotating shaft 15, 16 to rotate, wherein
  • the servo mechanism includes a gear motor 4, a one-way bearing 6 sequentially connected to the gear motor 4, an electromagnetic clutch 7, a speed reducer 9, and a planar four-bar linkage mechanism 10 for driving the liquid crystal display 1 on the rotating shafts 15, 16 to rotate.
  • the electromagnetic clutch 7 is further connected in parallel with a spring motor 8 , and the spring motor 8 is dynamically connected to the speed reducer 9; the gear motor 4 and the electromagnetic clutch 7 are dynamically connected by the coupling 5;
  • a deployment position sensor 14 and a retraction position sensor 13 for monitoring the position change of the liquid crystal display 1 and an angle sensor 11 for monitoring the change of the deployment speed of the liquid crystal display 1 are disposed correspondingly in the unfolding and retracting direction of the liquid crystal display 1;
  • the deployment position sensor 14, the retraction position sensor 13, the angle sensor 11, the gear motor 4, and the electromagnetic clutch 7 are all electrically connected to a controller.
  • the controller in the present invention is mainly used for collecting and processing signals generated in the deployed position sensor 14, the retracted position sensor 13, and the angle sensor 11, and then energizing or de-energizing the gear motor 4 and the electromagnetic clutch 7 accordingly.
  • the controller can be implemented by a microprocessor in the prior art or a programmable logic device having signal acquisition, processing and control functions.
  • the device can completely realize the requirement of the video playback device of the aircraft cabin entertainment system, and install the device at the lower end of the cabin luggage.
  • the video playback device When the video playback device is not working, when the liquid crystal display 1 is positioned in the retracted state, the overall appearance and the luggage long box The outer surface is uniform and does not highlight the appearance of the luggage; when the video playback device is used, the liquid crystal display 1 is deployed to a predetermined angle for entertainment program broadcast and cabin broadcast; when the liquid crystal display 1 is blocked by external force during deployment, it can be automatically retracted When the liquid crystal display 1 is hit by an external force during playback, it can also be automatically retracted; in the case of loss of power in the cabin, the liquid crystal display 1 can also be automatically retracted.
  • the apparatus further includes a common mounting panel 2 having a cavity for horizontally receiving the liquid crystal display 1, and a housing 3 fixed to the opposite side thereof, the rotating shafts 15, 16 being disposed on the housing 3 and located
  • the inner side of the cavity on the panel 2 is mounted in common, and the servo mechanism is placed in the housing 3.
  • the shape of the common mounting panel 2 can be changed according to the shape requirements of the aircraft trunk to ensure the appearance of the luggage to improve the clean appearance of the entire aircraft; meanwhile, the common mounting panel 2 and the outer casing of the liquid crystal display 1 have The uniform shape is also used to ensure that the appearance of the luggage compartment is neat and tidy when the liquid crystal display 1 is positioned in the retracted state.
  • the rotating shafts 15 and 16 are not limited to being disposed on the casing 3.
  • the rotating shafts 15 and 16 are disposed in the holes to realize the rotating shafts 15, 16
  • the rotation of the liquid crystal display 1 causes the mounting of the liquid crystal display 1 to be similar to that of the mounting on the common-type mounting panel 2; in addition, in the rotating operation of the liquid crystal display 1, the rotating shafts 15 and 16 can be fixed.
  • the liquid crystal display 1 and the rotating shafts 15 and 16 are rotatably connected to the common type mounting panel 2 or the casing 3, and the planar four-bar linkage mechanism for driving the liquid crystal display 1 directly acts on the liquid crystal display 1.
  • the outer casing of the liquid crystal display 1 should have a uniform shape with the common-type mounting panel 2.
  • the common type mounting panel 2 is fixed to the bottom of the trunk of the aircraft by mounting posts 24, 25, 26, 27, 28, 29 and screw holes thereon.
  • a mounting bottom plate 23 is fixedly mounted on the common mounting panel 2, and is surrounded by a common mounting panel 2 to receive a cavity of the liquid crystal display 1.
  • the motor 8, the speed reducer 9, and the angle sensor 11 are all fixed to the mounting base plate 23.
  • the electromagnetic clutch 7 in the present invention is an electromagnetic clutch capable of adjusting the engagement holding force, that is, the slip torque of the electromagnetic clutch 7 can be adjusted, and specifically, the setting of the energization voltage value of the electromagnetic clutch 7 can be adjusted.
  • the combined holding force between the clutch plates on the electromagnetic clutch 7 is adapted to meet the requirements of different external force impacts.
  • the spring motor 8 is a spring motor with an adjustable initial torque for adapting to the liquid crystal display 1 of different sizes.
  • the spring motor 8 includes a fixing plate 21 fixed to the mounting bottom plate 23 and a casing 17 fixed thereto by screws 22.
  • a core is coaxially disposed in the cavity formed by the casing 17 and the fixing plate 21.
  • a planar scroll coil spring 20 wound on the shaft 19 and the mandrel 19, the front end of the planar scroll spring 20 being fixed to the mandrel 19 and the outer casing 17, respectively;
  • a bearing 18 is disposed at both ends of the mandrel 19 .
  • it mainly relies on the winding energy storage of the planar scroll spring 20, and then the re-release energy drives the reverse retraction of the liquid crystal display 1.
  • the bearing 18 provided at both ends of the mandrel 19 facilitates the connection with the fixed plate 21 and the outer casing 17 on the one hand, and ensures smooth operation of the spring motor 8 on the other hand.
  • a damping gear 12 having a damping magnitude inversely proportional to the number of revolutions is further disposed at the end of the spring motor 8, so that the spring motor 8 starts the pair of spring motors when the liquid crystal display 1 is retracted. 8 gives a large resistance torque to prevent the planar scroll spring 20 in the spring motor 8 from being too fast at the time of energy release, resulting in rapid retraction of the liquid crystal display 1 and finally causing damage to the liquid crystal display 1.
  • control method of the present invention is as follows:
  • the controller controls the gear motor 4 and the electromagnetic clutch 7 to be energized, and the gear motor 4 sequentially drives the one-way bearing 6, the speed reducer 9 electrically connected and connected by the electromagnetic clutch 7, and the planar four-bar linkage mechanism 10, and further
  • the liquid crystal display 1 is driven to be unfolded and monitored by the deployment position sensor 14 in real time.
  • the deployment position sensor 14 transmits a signal to the controller, and the controller controls the gear motor 4 to be powered off, and the expansion operation is ended.
  • the controller controls the electromagnetic clutch 7 to be powered off or the electromagnetic clutch 7 is automatically powered off, the electromagnetic clutch 7 is separated, and the planar scroll spring 20 in the spring motor 8 is released. Reversely driving the speed reducer 9 and the plane four-bar linkage mechanism 10 in turn, and driving the liquid crystal display to reversely retract.
  • the retracting position sensor 13 detects that the liquid crystal display 1 reaches the set position, the retracting position sensor 13 transmits a signal to the controller to control
  • the electromagnetic clutch 7 is controlled to be energized, and the entire transmission mechanism is positioned by the one-way bearing 6 in the retracted state of the liquid crystal display 1.
  • the controller controls the electromagnetic clutch 7 to be powered off, the electromagnetic clutch 7 is separated, the planar scroll spring 20 in the spring motor 8 is released, the reverse drive 9 and the planar four-link The mechanism 10, in turn, drives the liquid crystal display 1 to reverse retract.
  • the angle sensor 11 detects that an abnormal change in the deployment speed of the liquid crystal display 1 signals a signal to the controller, the controller controls the electromagnetic clutch 7 to be powered off, the electromagnetic clutch 7 is separated, and the spring is separated.
  • the planar scroll spring 20 in the motor 8 releases energy, and the speed reducer 9 and the planar four-bar linkage mechanism 10 are driven in the reverse direction, thereby driving the liquid crystal display 1 to retract.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

公开了一种用于液晶显示器展开及收回的装置及其控制方法。该用于液晶显示器展开及收回的装置包括与液晶显示器（1）连接设置的转轴（15,16）及驱动该转轴（15,16）上的液晶显示器（1）展开及收回的伺服机构，所述伺服机构包括齿轮电机（4），与该齿轮电机（4）依次动力连接的单向轴承（7）、电磁离合器（8）、减速器（9）、驱动所述转轴（15,16）上的液晶显示器（1）转动的平面四连杆机构（10），所述电磁离合器（7）还并行驱动连接有弹簧马达（8），该弹簧马达（8）与减速器（9）动力连接；并通过一控制器与在所述液晶显示器（1）的展开及收回方向上对应设置的用于监测液晶显示器（1）位置变化的展开位置传感器（11）和收回位置传感器（14）、用于监测液晶显示器（1）展开速度变化的角度传感器（11）分别电性连接，通过控制器对相应传感器上的信号采集处理，来分别控制液晶显示器（1）在失电、突发异常情形下的收回。

Description

一种用于液晶显示器展开及收回的装置及其控制方法 技术领域
发明涉及一种通用于液晶显示器展开及收回的装置及其控制方法，可应用于飞机客舱娱乐系统视频播放，高速铁路机车上视频播放，汽车上视频播放，轮船上视频播放，及公共建筑内的视频播放。
背景技术
在飞机 、铁路、汽车、轮船等交通设施上的视频播放装置一 般都是要求液晶显示器工作时可以按规定的角度展开，方便乘客观看视频节目； 而不使用时可以收回，节约空间，且保护液晶显示器，同时防止乘客不小心撞上液晶显示器而受伤，其中，飞机上的客舱娱乐系统对此更为严格，其要求视频播放装置展开及收回装置低能耗；在客舱失电的情况下，液晶显示器可以及时收回； 当液晶显示器在展开过程中受到外力阻挡，可以自动收回；当液晶显示器在播放过程中受到外力撞击，可以自动收回。
然而，现有的视频播放装置还不能完全满足上述功能，大部分装置都是通过简单的通电、断电实现视频播放装置的展开及收回， 或者通过简单的机械结构来实现视频播放装置的展开及收回，对于各种类似失电、突发异常等情形下视频播放装置的相应收回动作却不能实现，使得其在使用过程中存在一定的安全隐患； 同时现有的该类装置结构复杂，不利用日常维护。
技术问题
针对上述现有技术中的不足之处，本发明旨在提供一种用于液晶显示器展开及收回的装置及该装置的控制方法，在视频播放过程中正常的展开及收回的前提下，可适应失电、突发异常等情形下的液晶显示器的自动收回，保证设备的安全使用。
技术解决方案
为了实现上述目的，本发明的技术方案：一种用于液晶显示器展开及收回的装置，包括与液晶显示器连接设置的转轴及驱动该转轴上的液晶显示器转动的伺服机构，其中，所述伺服机构包括齿轮电机，与该齿轮电机依次动力连接的单向轴承、电磁离合器、减速器、驱动所述转轴上的液晶显示器的平面四连杆机构，所述电磁离合器还并行驱动连接有弹簧马达，该弹簧马达与减速器动力连接；
在所述液晶显示器的展开及收回方向上对应设置有用于监测液晶显示器位置变化的展开位置传感器和收回位置传感器、用于监测液晶显示器展开速度变化的角度传感器；
所述展开位置传感器、收回位置传感器、角度传感器、齿轮电机、电磁离合器均与一控制器电性连接。
该用于液晶显示器展开及收回的装置的控制方法在于，
1 ）、当视频播放时，控制器控制齿轮电机、电磁离合器通电，齿轮电机依次带动单向轴承、由电磁离合器通电结合连接的减速器、平面四连杆机构，进而带动液晶显示器展开，并由展开位置传感器实时监测，当液晶显示器展开至设定位置时，展开位置传感器传输信号至控制器， 控制器控制齿轮电机断电，结束展开动作，单向轴承将整个传动机构定位在液晶显示器展开状态；同时，液晶显示器展开过程中，由电磁离合器带动弹簧马达即后续的平面蜗卷弹簧储能；
2 ）、在视频结束、或者失电、突发异常情形下，控制器控制电磁离合器断电或者电磁离合器自动断电，电磁离合器分离，弹簧马达内的平面蜗卷弹簧释能，反向依次带动减速器、平面四连杆机构，进而带动液晶显示器收回，当液晶显示器收回时， 当收回位置传感器检测到液晶显示器达到设定位置时，收回位置传感器传输信号至控制器，控制器控制电磁离合器通电，由单向轴承将整个传动机构定位在液晶显示器收回状态。
本发明通过齿轮电机、电磁离合器、减速器实现液晶显示器的展开，弹簧马达、减速器实现液晶显示器的收回，单向轴承定位液晶显示器的展开及收回状态，之中通过展开位置传感器、收回位置传感器、角度传感器实时监控液晶显示器的相应状态， 以形成不同的信号传输至控制器，再由控制器根据相应的信号控制齿轮电机、电磁离合器以实现液晶显示器的展开或各种失电、突发异常情形下的收回等的各种传动组合，结构紧凑，模块化设计，方便前期安装及后期维护，使用安全且能耗低。
此外进一步的，所述装置还包括具有一可水平置纳液晶显示器的型腔的共型安装面板及其反面固连的壳体，所述转轴设于该壳体上且位于共型安装面板上的型腔内一侧，所述伺服机构置于该壳体内。
所述共型安装面板上固连有一安装底板，其与共型安装面板围成置纳液晶显示器的型腔，所述齿轮电机、单向轴承、弹簧马达、减速器、角度传感器均固设在该安装底板上。
所述电磁离合器为可调接合保持力的电磁离合器。
所述弹簧马达端部还设置有一阻尼大小与转数成反比的阻尼齿轮。
所述弹簧马达包括固定板及与之固连的外壳，在该外壳与固定板组成的腔内同轴设置有芯轴及芯轴上卷绕的平面蜗卷弹簧，该平面蜗卷弹簧的首尾端分别固定在所述芯轴及外壳上；在所述芯轴两端设置有轴承。
所述弹簧马达为可调初始力矩的弹簧马达。
本装置的失电、突发异常情形具体控制方法如下：
当液晶显示器在播放过程中受到外力撞击时，撞击力大于电磁离合器自身的接合保持力，使得电磁离合器打滑，由展开位置传感器采集液晶显示器位置变化信号至控制器，控制器控制电磁离合器断电，电磁离合器分离，弹簧马达内的平面蜗卷弹簧释能，反向带动减速器、平面四连杆机构，进而使得液晶显示器收回。
当液晶显示器在展开过程中受到外力撞击或阻挡时，角度传感器监测出液晶显示器展开速度变化信号至控制器，控制器控制电磁离合器断电，电磁离合器分离，弹簧马达内的平面蜗卷弹簧释能，反向带动减速器、平面四连杆机构，进而使得液晶显示器收回。
通过弹簧马达起动力矩的可调，使得本装置可适用于小于等于15英寸不同规格的液晶显示器；而电磁离合器打滑力矩可设定，能适用于不同外力大小的要求。以保证液晶显示器在不同场合的安全使用。
有益效果
综上所述，本发明结构紧凑，模块化设计，方便前期安装及后期维护，能耗低，液晶显示器可实现无电回收，且可通过弹簧马达起动力矩不同调节来适应不同尺寸大小的液晶显示器， 通过电磁离合器打滑力矩的不同调节来适应不同外力碰撞下的液晶显示器的自动收回，以保证液晶显示器在不同场合中的安全使用。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明总体结构示意图；
图2是图1中的内部结构示意图；
图3是图1中弹簧马达的结构示意图。
 本发明的最佳实施方式
本发明的实施方式
下面结合具体实施例及附图来进一步详细说明本发明。
一种如图1、2所示用于液晶显示器展开及收回的装置，包括与液晶显示器1连接的转轴15、16及驱动该转轴15、16上的液晶显示器1转动的伺服机构，其中，所述伺服机构包括齿轮电机4，与该齿轮电机4依次动力连接的单向轴承6、电磁离合器7、减速器9、驱动所述转轴15、16上的液晶显示器1转动的平面四连杆机构10，所述电磁离合器7还并行驱动连接有弹簧马达8，该弹簧马达8与减速器9动力连接；该齿轮电机4与电磁离合器7通过联轴器5动力连接；
在所述液晶显示器1的展开及收回方向上对应设置有用于监测液晶显示器1位置变化的展开位置传感器14和收回位置传感器13、用于监测液晶显示器1展开速度变化的角度传感器11；
所述展开位置传感器14、收回位置传感器13、角度传感器11、齿轮电机4、电磁离合器7均与一控制器电性连接。
本发明中的控制器主要用于对展开位置传感器14、收回位置传感器13、角度传感器11中产生的信号采集并进行处理，再相应对齿轮电机4、电磁离合器7进行通电或断电控制。该控制器可采用现有技术中的微处理器，或者具有信号采集、处理及控制功能的可编程逻辑器件实现。
本装置可完全实现飞机客舱娱乐系统对视频播放装置的要求，将本装置安装在客舱行李箱下端，在视频播放装置不工作时，液晶显示器1定位在收回状态时，整体外型与行李长箱外型面一致，不突出行李箱外观面；当视频播放装置时，液晶显示器1展开到规定角度，进行娱乐节目的播放和客舱广播；当液晶显示器1在展开过程中受到外力阻挡，可自动收回；当液晶显示器1在播放过程中受到外力撞击，也可以自动收回；在客舱失电的情况下，液晶显示器1同样可以自动收回。
具体地，本装置还包括具有一可水平置纳液晶显示器1的型腔的共型安装面板2及其反面固连的壳体3，所述转轴15、16设于该壳体3上且位于共型安装面板2上的型腔内一侧，所述伺服机构置于该壳体3内。该共型安装面板2的形状可以依据飞机行李箱的形状要求进行改变，保证与行李箱的外型一致，以提高整个飞机的整洁外观；同时，共型安装面板2与液晶显示器1的外壳具有一致的形状，同样是为了当液晶显示器1定位在收回状态下保证行李箱的外型整洁美观。而转轴15、16并不限定于设于壳体3上，比如在共型安装面板2的型腔相对侧壁设孔，转轴15、16穿设定于该孔内即可实现转轴15、16的转动从而带动液晶显示器1的转动，在壳体3上的安装与在共型安装面板2上的安装方式相类似；另外，在液晶显示器1转动动作中，还可采用转轴15、16固定在共型安装面板2或者壳体3上，将液晶显示器1与转轴15、16转动连接，驱动液晶显示器1的平面四连杆机构直接作用在该液晶显示器1上也可。在转轴15、16的设置中应注意当安装在转轴15、16上的液晶显示器1在定位在收回状态时，液晶显示器1的外壳应与共型安装面板2具有一致的形状。所述共型安装面板2通过其上的安装柱24、25、26、27、28、29及螺孔固定在飞机的行李箱底部。
如图2所示，所述共型安装面板2上固连有一安装底板23，其与共型安装面板2围成置纳液晶显示器1的型腔，所述齿轮电机4、单向轴承6、弹簧马达8、减速器9、角度传感器11均固设在该安装底板23上。通过该设置，使得整个装置模块化设计，方便安装及维护，同时也方便本装置前期的加工生产。
本发明中的所述电磁离合器7为可调接合保持力的电磁离合器，也即是该电磁离合器7的打滑力矩可调节，具体可以通过调节电磁离合器7的通电电压值的设定，来调整该电磁离合器7上的离合片之间的结合保持力，用于适应不同外力撞击的要求。此外，所述弹簧马达8为可调初始力矩的弹簧马达，用于适应不同尺寸规格的液晶显示器1。
详见图3，所述弹簧马达8包括固定在安装底板23上的固定板21及与之通过螺钉22固连的外壳17，在该外壳17与固定板21组成的腔内同轴设置有芯轴19及芯轴19上卷绕的平面蜗卷弹簧20，该平面蜗卷弹簧20的首尾端分别固定在所述芯轴19及外壳17上；在所述芯轴19两端设置有轴承18。使用时，主要依靠平面蜗卷弹簧20的卷绕储能，然后再释能带动液晶显示器1的反转收回。设于芯轴19两端的轴承18一方面是方便与固定板21、外壳17的连接，另一方面是为了确保弹簧马达8的平稳工作。
另外，为了保证液晶显示器1能平稳收回，在所述弹簧马达8端部还设置有一阻尼大小与转数成反比的阻尼齿轮12，使得弹簧马达8在收回液晶显示器1时，开始段对弹簧马达8给予较大的阻力力矩，以避免弹簧马达8内的平面蜗卷弹簧20在释能时速度过快而导致液晶显示器1的快速收回最终致使液晶显示器1的损坏。
本发明的控制方法如下：
1 ）、当视频正常播放时，控制器控制齿轮电机4、电磁离合器7通电，齿轮电机4依次带动单向轴承6、由电磁离合器7通电结合连接的减速器9、平面四连杆机构10，进而带动液晶显示器1展开，并由展开位置传感器14实时监测，当液晶显示器1展开至设定位置时，展开位置传感器14传输信号至控制器，控制器控制齿轮电机4断电，结束展开动作，单向轴承6将整个传动机构定位在液晶显示器1展开状态；同时，液晶显示器1展开过程中，由电磁离合器7带动弹簧马达8内的平面蜗卷弹簧20储能；
2 ）、在视频结束、或者失电、突发异常情形下，控制器控制电磁离合器7断电或者电磁离合器7自动断电，电磁离合器7分离，弹簧马达8内的平面蜗卷弹簧20释能，反向依次带动减速器9、平面四连杆机构10，进而带动液晶显示器反转收回，当收回位置传感器13检测到液晶显示器1达到设定位置时，收回位置传感器13传输信号至控制器，控制器控制电磁离合器7通电，由单向轴承6将整个传动机构定位在液晶显示器1收回状态。
具体地，当液晶显示器1处于突发异常情形下，比如当液晶显示器1在播放过程中受到外力撞击时，撞击力大于电磁离合器7自身的接合保持力，使得电磁离合器7打滑，由展开位置传感器14采集液晶显示器1位置变化信号至控制器，控制器控制电磁离合器7断电，电磁离合器7分离，弹簧马达8内的平面蜗卷弹簧20释能，反向带动减速器9、平面四连杆机构10，进而带动液晶显示器1反转收回。
而当液晶显示器1在展开过程中受到外力撞击或阻挡时，角度传感器11监测出液晶显示器1展开速度发生异常变化将信号至控制器，控制器控制电磁离合器7断电，电磁离合器7分离，弹簧马达8内的平面蜗卷弹簧20释能，反向带动减速器9、平面四连杆机构10，进而带动液晶显示器1收回。
以上对本发明实施例所提供的技术方案进行了详细介绍，本文中应用了具体个例对本发明实施例的原理以及实施方式进行了阐述，以上实施例的说明只适用于帮助理解本发明实施例的原理；同时，对于本领域的一般技术人员，依据本发明实施例，在具体实施方式以及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。
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  1. 1 、一种用于液晶显示器展开及收回的装置，包括与液晶显示器（1）连接设置的转轴（15、16）及驱动该转轴（15、16）上的液晶显示器（1）展开及收回的伺服机构，其特征在于：所述伺服机构包括齿轮电机（4），与该齿轮电机（4）依次动力连接的单向轴承（6）、电磁离合器（7）、减速器（9）、驱动所述转轴（15、16）上的液晶显示器（1）转动的平面四连杆机构（10），所述电磁离合器（7）还并行驱动连接有弹簧马达（8），该弹簧马达（8）与减速器（9）动力连接；
    在所述液晶显示器（1）的展开及收回方向上对应设置有用于监测液晶显示器（1）位置变化的展开位置传感器（14）和收回位置传感器（13）、用于监测液晶显示器（1）展开速度变化的角度传感器（11）；
    所述展开位置传感器（14）、收回位置传感器（13）、角度传感器（11）、齿轮电机（4）、电磁离合器（7）均与一控制器电性连接。
    2 、如权利要求1所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述装置还包括具有一可水平置纳液晶显示器（1）的型腔的共型安装面板（2）及其反面固连的壳体（3），所述转轴（15、16）设于该壳体（3）上且位于共型安装面板（2）上的型腔内一侧，所述伺服机构置于该壳体（3）内。
    3 、如权利要求2所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述共型安装面板（2）上固连有一安装底板（23），其与共型安装面板（2）围成置纳液晶显示器（1）的型腔，所述齿轮电机（4）、单向轴承（6）、弹簧马达（8）、减速器（9）、角度传感器（11）均固设在该安装底板（23）上。
    4 、如权利要求1所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述电磁离合器（7）为可调接合保持力的电磁离合器。
    5 、如权利要求1所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述弹簧马达（8）端部还设置有一阻尼大小与转数成反比的阻尼齿轮（12）。
    6 、如权利要求1所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述弹簧马达（8）包括固定板（21）及与之固连的外壳（17），在该外壳（17）与固定板（21）组成的腔内同轴设置有芯轴（19）及芯轴（19）上卷绕的平面蜗卷弹簧（20），该平面蜗卷弹簧（20）的首尾端分别固定在所述芯轴（19）及外壳（17）上；在所述芯轴（19）两端设置有轴承（18）。
    7 、如权利要求1所述的一种用于液晶显示器展开及收回的装置，其特征在于：所述弹簧马达（8）为可调初始力矩的弹簧马达。
    8 、如权利要求1-7任一所述的一种液晶显示器展开及收回的装置的控制方法，其特征在于，
    1 ）、当视频播放时，控制器控制齿轮电机（4）、电磁离合器（7）通电，齿轮电机（4）依次带动单向轴承（6）、由电磁离合器（7）通电结合连接的减速器（9）、平面四连杆机构（10），进而带动液晶显示器（1）展开，并由展开位置传感器（14）实时监测，当液晶显示器（1）展开至设定位置时，展开位置传感器（14）传输信号至控制器，控制器控制齿轮电机（4）断电，结束展开动作，单向轴承（6）将整个传动机构定位在液晶显示器（1）展开状态；同时，液晶显示器（1）展开过程中，由电磁离合器（7）带动弹簧马达（8）内的平面蜗卷弹簧（20）储能；
    2 ）、在视频结束、或者失电、突发异常情形下，控制器控制电磁离合器（7）断电或者电磁离合器（7）自动断电，电磁离合器（7）分离，弹簧马达（8）内的平面蜗卷弹簧（20）释能，反向依次带动减速器（9）、平面四连杆机构（10），进而带动液晶显示器（1）收回，当收回位置传感器（13）检测到液晶显示器（1）达到设定位置时，收回位置传感器（13）传输信号至控制器，控制器控制电磁离合器（7）通电，由单向轴承（6）将整个传动机构定位在液晶显示器（1）收回状态。
    9 、如权利要求8所述的一种用于液晶显示器展开及收回的装置的控制方法，其特征在于：当液晶显示器（1）在播放过程中受到外力撞击时，撞击力大于电磁离合器（7）自身的接合保持力，使得电磁离合器（7）打滑，由展开位置传感器（14）采集液晶显示器（1）位置变化信号至控制器，控制器控制电磁离合器（7）断电，电磁离合器（7）分离，弹簧马达（8）内的平面蜗卷弹簧（20）释能，反向带动减速器（9）、平面四连杆机构（10），进而使得液晶显示器（1）收回。
    10 、如权利要求8所述的一种用于液晶显示器展开及收回的装置的控制方法，其特征在于：当液晶显示器（1）在展开过程中受到外力撞击或阻挡时，角度传感器（11）监测出液晶显示器（1）展开速度变化信号至控制器，控制器控制电磁离合器（7）断电，电磁离合器（7）分离，弹簧马达（8）内的平面蜗卷弹簧（20）释能，反向带动减速器（9）、平面四连杆机构（10），进而使得液晶显示器（1）收回。
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