WO2020135271A1 - 平面显示设备的音箱伸缩结构及平面显示设备 - Google Patents

平面显示设备的音箱伸缩结构及平面显示设备 Download PDF

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Publication number
WO2020135271A1
WO2020135271A1 PCT/CN2019/127148 CN2019127148W WO2020135271A1 WO 2020135271 A1 WO2020135271 A1 WO 2020135271A1 CN 2019127148 W CN2019127148 W CN 2019127148W WO 2020135271 A1 WO2020135271 A1 WO 2020135271A1
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WO
WIPO (PCT)
Prior art keywords
drive
rail
bracket
driving
display device
Prior art date
Application number
PCT/CN2019/127148
Other languages
English (en)
French (fr)
Inventor
张勇
黄顺明
余亚军
胡进
杨勇
Original Assignee
深圳市万普拉斯科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 深圳市万普拉斯科技有限公司 filed Critical 深圳市万普拉斯科技有限公司
Priority to EP19906292.8A priority Critical patent/EP3890346A1/en
Publication of WO2020135271A1 publication Critical patent/WO2020135271A1/zh
Priority to US17/360,348 priority patent/US20210345027A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G06F1/1605—Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/025—Transducer mountings or cabinet supports enabling variable orientation of transducer of cabinet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • the present application relates to the field of sound boxes of flat display devices, in particular to a telescopic structure of sound boxes of flat display devices, and also to a flat display device having the telescopic structure.
  • the speaker sound output method generally includes forward-facing sound output as shown in FIGS. 1 and 2, in which the speaker 800 is placed under the screen 900; as shown in FIG. 3 The sound is output downward as shown, and the sound is output backward as shown in FIG. 4.
  • the speaker 800 is placed behind the screen 900.
  • the user who feels the best sound quality is the front sound, followed by the downward sound, and the worst sound quality is the backward sound. Therefore, it is usually a priority to set the speaker to be able to emit sound forward.
  • the speaker For the forward-facing sound solution, the speaker needs to occupy a large space under the screen, and it cannot achieve a concise appearance.
  • the traditional technology generally adopts a reciprocating up and down structure.
  • the applicant found that there is a large distance between the extended speaker 800 and the front of the screen 900, and the appearance effect not good.
  • FIG. 7 another type of reciprocating retractable speaker used in the conventional technology is to move the speaker vertically downward (arrow A) and then diagonally forward (arrow B).
  • the structure speaker movement requires more space, which results in the lower border of the device being wider than the ordinary display device, and the purpose of concise appearance cannot be achieved.
  • a speaker telescopic structure the structure includes:
  • a guide rail system is provided on the body of the flat display device.
  • the guide rail system includes a first drive rail and a second drive rail connected to each other, and the guide directions of the first drive rail and the second drive rail are perpendicular to each other;
  • the trolley system which is constrained by the guide rail system, includes a carriage support, a speaker connection bracket fixedly connected to the carriage support, a drive motor mounted on the carriage support, and a drive wheel driven by the output end of the drive motor to rotate The wheel drives the carriage support along the path defined by the first drive rail and the second drive rail.
  • the sound box telescopic structure When the above sound box telescopic structure is installed and used in a flat display device, as long as the guiding direction of the first drive rail is substantially parallel to the screen of the device, the sound box can be moved vertically downward and then forward, and the sound can be made forward.
  • the driving wheel is a driving gear
  • the first driving rail and the second driving rail are both racks.
  • gear transmission mechanism the forward movement of the speaker requires less space than the traditional oblique forward movement method; in addition, the upper and lower reciprocating retractable structure, the above speaker retractable structure, while achieving forward sound, the speaker can be adjusted to close The location in front of the screen makes the appearance simple.
  • the guide directions of the first drive rail and the second drive rail are perpendicular to each other, or together form an annular guide path.
  • a limiter is further provided at the end of the drive shaft, and the guide rail system further includes a limiter groove provided on the fuselage to restrict the travel path of the limiter.
  • the limiting member is a bearing.
  • a driving gear is fixed on the output end of the motor
  • the trolley system further includes a driving shaft rotatably mounted on the trolley bracket, and a driven gear is fixed on the driving shaft.
  • the cart system further includes a transition gear mounted on the carriage bracket, and the driving gear transmits torque to the driven gear through the transition gear.
  • a limiter is further provided at the end of the drive shaft, and the guide rail system further includes a limiter groove provided on the fuselage to restrict the travel path of the limiter.
  • the limiting member is a bearing.
  • the trolley bracket includes a first bracket and a second bracket, and a plurality of connecting rods connecting the first bracket and the second bracket as a whole in the middle
  • the drive shaft includes side-by-side The first drive shaft and the second drive shaft, the two ends of the first drive shaft are respectively installed on the first bracket and the second bracket, the two ends of the second drive shaft are respectively installed on the first bracket and the second bracket, the first The two ends of the driving shaft and the second driving shaft are respectively provided with driving wheels.
  • the first driving rail and the second driving rail are connected and transitioned by an arc-shaped rail.
  • a flat display device includes the sound box telescopic structure, wherein the guiding direction of the first drive rail is parallel to the screen of the flat display device, and the guide direction of the second drive rail is perpendicular to the screen.
  • the guide rail system is installed inside the body of the flat display device, and the sound box connecting bracket is connected with a sound box, and the sound box can extend and retract into the inside of the body.
  • the above-mentioned flat display device is provided with a telescopic structure of the sound box, so it can realize forward-facing sound, and requires a small space and a simple appearance.
  • FIG. 1 is a schematic side view of a flat display device that emits sound forward in the conventional technology
  • FIG. 2 is a schematic front view of a flat display device that emits sound forward in the conventional technology
  • FIG. 3 is a schematic side view of a flat display device that emits sound downward in the conventional technology
  • FIG. 4 is a schematic side view of a flat display device that emits sound backwards in the conventional technology
  • FIG. 5 is a schematic side view of a flat display device with an up-and-down reciprocating telescopic speaker in the conventional technology when the speaker is retracted;
  • FIG. 6 is a schematic side view of a flat display device with an up-and-down reciprocating telescopic speaker in the conventional technology when the speaker is extended;
  • FIG. 7 is a schematic side view of a flat display device of another reciprocating retractable speaker of the conventional technology
  • FIG. 8 is a schematic front view of a flat display device according to an embodiment of the present application when a speaker of the flat display device is extended;
  • FIG. 9 is a schematic front view of the flat display device according to an embodiment of the present application when the sound box is retracted;
  • FIG. 10 is a schematic side sectional view of the flat display device of the embodiment shown in FIG. 9;
  • FIG. 11 is a schematic side sectional view of the flat display device of the embodiment shown in FIG. 8;
  • FIG. 12 and 13 are schematic views of the back structure of the flat display device of the embodiment shown in FIG. 9 at different angles after the housing is removed;
  • FIG. 14 is a schematic structural diagram of a cart system in a telescopic structure of a speaker of a flat display device according to an embodiment of the application;
  • FIG. 15 is a schematic plan view of a guide rail system in a speaker telescopic structure of a flat display device according to an embodiment of the application;
  • FIG. 16 is a schematic structural view of the guide rail system of the embodiment shown in FIG. 15.
  • an element when said to be “fixed” to another element, it can be directly on the other element or there can also be a centered element.
  • an element When an element is considered to be “connected” to another element, it may be directly connected to another element or there may be a center element at the same time.
  • the embodiment of the present application proposes a sound box telescopic structure applied to a flat display device.
  • a flat display device having the telescopic structure is also proposed.
  • the flat display device may be an LCD TV, a plasma TV, an organic electroluminescent diode TV or a display, etc. The following describes in detail in conjunction with the embodiments.
  • a flat display device has a telescopic structure of a sound box, which can extend and retract the sound box.
  • the flat display device is an LCD TV, which includes a fuselage 10, a rail system 20 provided on the fuselage 10, and a trolley system 30 constrained by the rail system 20 for the walking path.
  • the trolley system 30 is used to connect the speaker 40 and drive the speaker 40 to move, so that the speaker 40 can be extended or retracted.
  • the body 10 may be formed by splicing a front case and a rear case installed with a screen, and electronic components such as a backlight module are accommodated in the space between the front case and the rear case.
  • the rail system 20 may be disposed inside the fuselage 10, that is, installed in the space between the front shell and the rear shell.
  • the speaker 40 can extend or retract into the space. In other words, the speaker 40 can extend from the body 10 or retract inside the body 10. Therefore, the speaker 40 can realize forward-facing sound when in use; it is a hidden speaker when not in use, and the speaker 40 is not visible no matter from the front and the rear of the LCD TV.
  • the rail system 20 may also be disposed on the back of the fuselage 10. In this way, when the LCD TV is in operation, the speaker 40 can be extended from the body 10. When the LCD TV is not working, the speaker 40 is retracted to the back of the body 10. At this time, the speaker 40 is not visible from the front of the LCD TV, and the back of the LCD TV is usually opposite to the wall, and does not affect the user's appearance experience.
  • the speaker 40 is configured to extend out the bottom of the body 10 and move below the screen 110. Understandably, the sound box telescopic structure and the sound box 40 are installed in the lower part of the LCD TV. In other embodiments of the present application, the sound box telescopic structure and the sound box 40 may also be installed on one or both sides of the LCD TV, or on the top of the LCD TV. Therefore, the speaker 40 may be provided to protrude from the side or top of the LCD TV.
  • the speaker 40 is connected to the cart 310 through a speaker connection bracket 320. Therefore, the movement trajectory of the trolley system 30 will be reflected on the speaker 40 synchronously.
  • the speaker 40 may be fixed to the speaker connection bracket 320 by screws.
  • the speaker connection bracket 320 may be provided with an internal small hole for the driving signal line required by the speaker 320 to penetrate into the speaker 40.
  • the rail system 20 is provided inside the fuselage 10.
  • the guide rail system 20 includes a first drive rail 210 and a second drive rail 220 that are connected, and the guide directions of the first drive rail 210 and the second drive rail 220 are perpendicular to each other.
  • the trolley system 30 includes a trolley bracket 310, a speaker connection bracket 320 fixedly connected to the trolley bracket 310, a driving motor 330 mounted on the trolley bracket 310, and a rotary drive driven by an output end of the driving motor 330 Drive wheels 340, wherein the drive wheels 340 drive the carriage 310 along the path defined by the first drive rail 210 and the second drive rail 220.
  • the first driving rail 210 is arranged along the height direction of the fuselage 10, that is, the vertical direction; the second driving rail 220 is Horizontal setting.
  • the guiding direction of the first driving rail 210 is parallel to the screen 110, and the guiding direction of the second driving rail 22 is set to be perpendicular to the screen 110. Therefore, when the LCD TV works normally, as shown in FIG. 11, the trolley system 30 can drive the speaker 40 to move vertically downward first, and then move forward horizontally, and finally extend from the inside of the body 10 and the speaker 40 is flush with the screen 110 , As shown in Figure 9, so that the sound can be made forward.
  • the trolley system 30 can drive the speaker 40 to automatically retract into the interior of the body 10.
  • the driving motor 330 is a forward and reverse rotation motor. During forward rotation and reverse rotation, the movement direction of the trolley system 30 is just opposite, so that the trolley system 30 can move back and forth.
  • the driving signal of the trolley system 30 walking can be controlled by the function keys on the LCD TV device, or a control device (such as a remote controller) can send out the signal.
  • the signal can be infrared, radio frequency or Bluetooth signal.
  • the walking signal of the trolley system 30 can also be automatically controlled by the LCD TV.
  • the built-in software of the LCD TV can automatically extend or retract the speaker as needed.
  • a control circuit board with a control chip that controls the operation of the driving motor 330 may be disposed in the internal space of the body 10.
  • the flat display device and the speaker expansion and contraction structure of the above-mentioned embodiments of the present application using the guide rail system 20, can realize the speaker 40 to move vertically downward and then horizontally forward, which can realize forward sound and the speaker 40 to move forward
  • the required space is smaller than the oblique forward movement method of the traditional technology; in addition, the up and down reciprocating telescopic structure realizes forward sound, and the speaker 40 of the above embodiment can be adjusted to a position close to the front of the screen 110, making the appearance concise .
  • a position sensor 50 may also be provided inside or behind the body 10.
  • the position sensor is used to detect the trajectory of the trolley system 30.
  • the position sensor 50 is used to detect the movement trajectory of the speaker connection bracket 320.
  • the speaker connection bracket 320 moves to place the speaker 40 in the front position (ie, its working position)
  • the position sensor feeds back signals to the control circuit board, thereby controlling the circuit board
  • the driving motor 330 is controlled to stop running.
  • the motion trajectory of the trolley system 30 can also be controlled by setting the operating parameters of the driving motor 330.
  • the number of turns that the drive motor 330 can rotate forward or reverse is preset, and the operation is automatically stopped when the drive motor 330 rotates forward or reverse a predetermined number of turns.
  • the position sensor may be a contact or non-contact sensor.
  • the driving wheel 340 is a driving gear fixed on the driving shaft 350, and the first driving rail 210 and the second driving rail 220 are both racks.
  • the first driving guide rail 210 and the second driving guide rail 220 define the walking trajectory of the driving wheel 340 through the tooth structure, which has good stability and can give the driving wheel 340 a strong reverse thrust.
  • a driving gear 331 is fixed on the output end of the driving motor 330
  • the trolley system 30 further includes a driving shaft 350 rotatably mounted on the trolley bracket 310
  • a driven gear 351 is fixed to the drive shaft 350.
  • the torque transmission between the driving motor 330 and the driving wheel 340 is realized through the driving gear 331, the driven gear 351, and the driving shaft 350.
  • the output end of the driving motor 330 drives the driving gear 331 to rotate
  • the driving gear 331 drives the driven gear 351 to rotate
  • the driven gear 351 drives the driving shaft 350 to rotate synchronously
  • the driving shaft 350 drives the driving wheel 340 to rotate.
  • the torque transmission between the driving motor 330 and the driving wheel 340 can also be achieved through other structures, for example, a pulley is provided on the output end of the driving motor 330 and the driving shaft 350 respectively, using the Transfer torque.
  • the end of the drive shaft 350 is further provided with a stopper 354, and the guide rail system 20 further includes a A limiting groove 112 that restricts the trajectory of the limiting member 354.
  • the guide path of the limiting groove 112 is consistent with the guide path of the guide rail system 20. In this way, as shown in FIGS. 15 and 16, when the drive wheel 340 travels along the first drive rail 210 and the second rail 220, the stopper 354 on the drive shaft 350 also travels under the restraint of the stopper groove 112, thereby improving The stability of the entire trolley system 30 during walking is not skewed.
  • the limiting member 354 is configured to be able to slide in the limiting groove 112.
  • the stopper 354 uses a bearing.
  • the bearing has a radial dimension and an axial dimension, so it can limit the other degrees of freedom of the trolley system 30 except for the direction of movement.
  • the bearing has less friction when sliding in the limiting groove 112, making the sliding more smooth and less noise.
  • the limiting member 354 is also used to axially limit the driving wheel 340.
  • the limiting groove 112 may be directly formed on the fuselage 10, such as the rear shell of the fuselage 10.
  • the limiting groove 112 may also be detachably assembled with the fuselage 10, and the two may be clipped or connected with fasteners.
  • a rib 113 is installed on the fuselage 10, and the rib 113 and the bases of the first guide rail 210 and the second guide rail 220 form a limiting groove 112.
  • the trolley system 30 further includes a transition gear 360 mounted on the trolley bracket 310, wherein the driving gear 331 transmits torque to the driven gear 351 through the transition gear 360 .
  • the transition gear 360 By providing the transition gear 360, the transmission distance between the output end of the driving motor 330 and the driven gear 351 can be increased without using a large-diameter gear, which facilitates the arrangement of components inside the body 10.
  • the trolley bracket 310 includes a first bracket 311 and a second bracket 312, and a plurality of connecting rods 313 connecting the first bracket 311 and the second bracket 312 as a whole in the middle.
  • the driving shaft 350 includes a first driving shaft 352 and a second driving shaft 353 arranged side by side, wherein both ends of the first driving shaft 352 are respectively mounted on the first bracket 311 and the second bracket 312, and both ends of the second driving shaft 353 They are respectively installed on the first bracket 311 and the second bracket 312.
  • the two ends of the first drive shaft 352 and the second drive shaft 353 are respectively provided with drive wheels 340, and the first guide rail 210 and Second guide rail 220.
  • each guide rail system 20 includes the first drive rail 210 ⁇ 220 ⁇ The second drive rail 220.
  • the left end of the first drive shaft 352 is similar to the left end of the second drive shaft 353. Therefore, in some embodiments of the present application, a dual drive shaft driving method is used, and both ends of the first drive shaft 352 and the second drive shaft 353 are constrained and guided by the driving guide rails, and the stability of the system is better . Understandably, in practice, the number of drive shafts and drive gears can be increased as needed.
  • the motor 330 is driven and located between the first drive shaft 352 and the second drive shaft 353. In this way, the space between the first drive shaft 352 and the second drive shaft 353 is fully utilized, which is advantageous for a compact structure.
  • the driving motor 330 is mounted to the first bracket 311 through the motor bracket 332.
  • the first driving rail 210 and the second driving rail 220 are connected and transitioned by an arc-shaped rail 230.
  • the first driving rail 210 and the second driving rail 220 are connected and transitioned by an arc-shaped rail 230, and formed into an arc-shaped guiding structure.
  • the carriage support 310 can realize both vertical movement and horizontal movement along the arc-shaped guide structure. As shown in FIGS.
  • the arc-shaped rail 230 is an arc-shaped rack
  • the shape of the guide rail 230 is a substantially L-shaped rack.
  • the final movement trajectory of the trolley system 30 is also an L-shape, thereby realizing the requirement of moving the speaker 40 vertically and then horizontally.
  • the angle between the first drive rail 210 and the second drive rail 220 is not limited to vertical, for example, the two are at an acute or obtuse angle, so that as long as the first drive rail 210 is parallel to the screen, the speaker 40 can achieve vertical movement first and then obliquely forward Horizontal movement. It may also be that the first driving rail 210 and the second driving rail 220 are in a ring shape, so that the path when the speaker 40 is extended and the path when it is retracted are just circular enough.
  • the first driving rail 210 and the second driving rail 220 are close to each other, but there is no connecting member.
  • the driving wheel 340 moves on the first driving guide rail 210 and reaches the end of the first driving guide rail 210, only the limiting groove 112 can be used to guide the walking trajectory of the driving shaft 350.
  • the driving wheel When the 340 rotates, it can still directly transition to the connecting part that contacts the end of the second driving rail 220 without transition.

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  • General Engineering & Computer Science (AREA)
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  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
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Abstract

本申请涉及一种平面显示设备及其具有的音箱伸缩结构，音箱伸缩结构包括：导轨系统，设置于平面显示设备的机身，导轨系统包括相衔接的第一驱动导轨和第二驱动导轨，第一驱动导轨和第二驱动导轨的引导方向成角度设置；小车系统，由导轨系统约束行走轨迹，包括小车支架、与小车支架固定连接的音箱连接支架、安装在小车支架上的驱动电机、由驱动电机的输出端驱动旋转的驱动轮，驱动轮沿第一驱动导轨和第二驱动导轨限定的路径带动小车支架行走。通过音箱伸缩结构，可实现音箱先垂直向下运动再向前运动，实现朝前发声，且需要的空间小。

Description

平面显示设备的音箱伸缩结构及平面显示设备
相关申请的交叉引用
本申请基于申请号为201811611286.1、申请日为2018年12月27日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及平面显示设备的音箱领域，特别是涉及一种平面显示设备的音箱伸缩结构，还涉及一种具有该伸缩结构的平面显示设备。
背景技术
传统的平面显示设备，如液晶电视、有机电激发光二极管电视，音箱出声方式一般包括如图1和图2所示的朝前出声，其中音箱800置于屏幕900的下方；如图3所示的朝下出声，及如图4所示朝后出声，图3和图4中，音箱800均置于屏幕900的后方。其中，用户感受到音质最好的是朝前出声，其次是朝下出声，音质最差的是朝后出声。因此，通常优先考虑将音箱设置为能够朝前出声。
朝前出声的方案，音箱需在屏幕下面占据较大空间，无法实现简洁外观。针对此问题，如图5和图6所示，传统技术中普遍采用是上下往复式伸缩结构，然而，申请人发现伸出的音箱800与屏幕900的最前面还有较大的距离，外观效果不好。如图7所示，传统技术中采用的另一种往复式伸缩音箱为，使音箱先垂直向下运动(箭头A)，然后再斜向前(箭头B)运动，然而申请人发现由于此种结构音箱运动需要较多空间，导致设备的下边框比普通显示设备宽，也实现不了简洁外观的目的。
需要说明的是，上述背景技术的内容为用于引出本申请所要解决的技术问题，并不代表申请人承认上述内容为现有技术。
发明内容
基于此，有必要针对传统伸缩式音箱运动空间大、影响设备外观的问题，提出一种平面显示设备的音箱伸缩结构。同时还提出一种具有这种音箱伸缩结构的平面显示设备。
一种音箱伸缩结构，该结构包括：
导轨系统，设置于平面显示设备的机身，所述导轨系统包括相衔接的第一驱动导轨和第二驱动导轨，所述第一驱动导轨和第二驱动导轨的引导方向彼此垂直；
小车系统，由所述导轨系统约束行走轨迹，包括小车支架、与小车支架固定连接的音箱连接支架、安装在小车支架上的驱动电机、由驱动电机的输出端驱动旋转的驱动轮，所述驱动轮沿第一驱动导轨和第二驱动导轨限定的路径带动小车支架行走。
上述音箱伸缩结构在平面显示设备中安装使用时，只要使第一驱动导轨的引导方向大致平行设备的屏幕，即可实现音箱先垂直向下运动再向前运动，实现朝前发声。
在其中一个实施例中，所述驱动轮为驱动齿轮,所述第一驱动导轨和第二驱动导轨均为齿条。采用齿轮传动机构，音箱向前运动需要的空间较传统技术的斜向前运动方式小；此外，较上下往复式伸缩结构，上述音箱伸缩结构，在实现朝前发声的同时，音箱能够调整到靠近屏幕前方的位置，使外观简洁。
在其中一个实施例中，所述第一驱动导轨和第二驱动导轨的引导方向彼此垂直，或者共同构成环形的引导路径。
在其中一个实施例中，所述驱动轴的端部还设有限位件，所述导轨系统还包括设置在所述机身上的约束所述限位件行走轨迹的限位槽。
在其中一个实施例中，所述限位件为轴承。
在其中一个实施例中，所述电机的输出端上固定有主动齿轮，所述小车系统还包括转动安装于在所述小车支架上的驱动轴，所述驱动轴上固定有从动齿 轮。
在其中一个实施例中，所述小车系统还包括安装在所述小车支架上的过渡齿轮，所述主动齿轮通过所述过渡齿轮传递扭矩至所述从动齿轮。
在其中一个实施例中，所述驱动轴的端部还设有限位件，所述导轨系统还包括设置在所述机身上的约束所述限位件行走轨迹的限位槽。
在其中一个实施例中，所述限位件为轴承。
在其中一个实施例中，所述小车支架包括第一支架和第二支架，及于中间将所述第一支架和第二支架连成整体的若干个连杆，所述驱动轴包括并排设置的第一驱动轴和第二驱动轴，第一驱动轴的两端分别安装在第一支架和第二支架上，第二驱动轴的两端分别安装在第一支架和第二支架上，第一驱动轴的两端和第二驱动轴的两端分别设有驱动轮。
在其中一个实施例中，所述第一驱动导轨和第二驱动导轨之间通过弧形导轨连接过渡。
一种平面显示设备，包括所述的音箱伸缩结构，其中所述第一驱动导轨的引导方向平行于所述平面显示设备的屏幕，所述第二驱动导轨的引导方向垂直于所述屏幕。
在其中一个实施例中，所述导轨系统安装在所述平面显示设备的机身的内部，所述音箱连接支架连接有音箱,所述音箱可伸出及缩进所述机身的内部。
上述平面显示设备，设置了音箱伸缩结构，因此能够实现朝前发声，且需要的空间小，外观简洁。
附图说明
图1为传统技术中朝前出声的平面显示设备的侧面示意图；
图2为传统技术中朝前出声的平面显示设备的正面示意图；
图3为传统技术中朝下出声的平面显示设备的侧面示意图；
图4为传统技术中朝后出声的平面显示设备的侧面示意图；
图5为传统技术中具有上下往复式伸缩音箱的平面显示设备的音箱缩回状 态时的侧面示意图；
图6为传统技术中具有上下往复式伸缩音箱的平面显示设备的音箱伸出状态时的侧面示意图；
图7为传统技术的另一种往复式伸缩音箱的平面显示设备的侧面示意图；
图8为本申请一实施例的平面显示设备的音箱伸出状态时的正面示意图；
图9为本申请一实施例的平面显示设备的音箱缩回状态时的正面示意图；
图10为图9所示实施例的平面显示设备的侧面剖视示意图；
图11为图8所示实施例的平面显示设备的侧面剖视示意图；
图12和图13分别为图9所示实施例的平面显示设备去除后壳的不同角度背面结构示意图；
图14为本申请一实施例的平面显示设备的音箱伸缩结构中的小车系统的结构示意图；
图15为本申请一实施例的平面显示设备的音箱伸缩结构中的导轨系统的平面示意图；
图16为图15所示实施例的导轨系统的结构示意图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术 语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请的实施例提出一种应用于平面显示设备的音箱伸缩结构。还提出一种具有该伸缩结构的平面显示设备。平面显示设备可以是液晶电视、电浆电视机、有机电激发光二极管电视或显示器等。下面结合实施例详细描述。
请参考图8至图14，根据本申请一实施例的平面显示设备，具有音箱伸缩结构，能实现音箱的伸出及缩回。具体的,平面显示设备为液晶电视,其包括机身10、设置在机身10的导轨系统20、由导轨系统20约束行走轨迹的小车系统30。小车系统30用以连接音箱40并带动音箱40运动，以使音箱40能够伸出或缩回。
机身10可由安装有屏幕的前壳和后壳拼接而成，背光模组等电子元器件容纳在前壳与后壳之间的空间中。在本申请的实施例中，导轨系统20可设置在机身10的内部，即安装在前壳与后壳之间的空间中。参考图10和图11，音箱40则是能够伸出或者缩回该空间内，换言之，音箱40能够从机身10中伸出或者缩回机身10的内部。从而，使用时音箱40能够实现朝前发声；而不使用时为隐藏式音箱，无论从液晶电视的前方和后方，均看不到音箱40。在本申请的其他实施例中，导轨系统20还可以设置在机身10的背面。如此，液晶电视工作时，音箱40能够从机身10中伸出。液晶电视不工作时，音箱40缩回至机身10的背面，此时，从液晶电视的正面看不到音箱40，而液晶电视的背面通常与墙壁相对，也不影响用户外观体验。
参考图8，在本申请的实施例中，音箱40设置为可伸出机身10的底部并运动到屏幕110的下方。可以理解地，音箱伸缩结构和音箱40是安装在液晶电视的整机的下部。在本申请的其他实施例中，音箱伸缩结构和音箱40还可以是安装在液晶电视的两侧中的一侧或两侧，或者安装在液晶电视的顶部。因此，音箱40也可以是设置为从液晶电视的侧部或者顶部伸出。
参考图12、图14，音箱40通过音箱连接支架320与小车310连接。因此，小车系统30的运动轨迹会同步体现在音箱40上。例如，音箱40可通过螺钉固 定在音箱连接支架320上。音箱连接支架320上可开设内部小孔，以供音箱320所需要的驱动信号线贯通至音箱40内部。
在本申请的实施例中，导轨系统20设置在机身10的内部。参图15和16，导轨系统20包括相衔接的第一驱动导轨210和第二驱动导轨220，第一驱动导轨210和第二驱动导轨220的引导方向彼此垂直。另外，参考图12、图14，小车系统30包括小车支架310、与小车支架310固定连接的音箱连接支架320、安装在小车支架310上的驱动电机330、由驱动电机330的输出端驱动旋转的驱动轮340，其中驱动轮340沿第一驱动导轨210和第二驱动导轨220限定的路径带动小车支架310行走。
当机身10如图8至11所示角度放置时，即液晶电视正常工作时的放置姿态下，第一驱动导轨210沿机身10的高度方向即竖直方向设置；第二驱动导轨220则水平设置。此时第一驱动导轨210的引导方向平行于屏幕110，第二驱动导轨22的引导方向则设置为垂直于屏幕110。因此，液晶电视正常工作时，如图11所示，小车系统30可带动音箱40先垂直向下运动，然后水平向前运动，最终从机身10的内部伸出且音箱40与屏幕110平齐，如图9所示，从而能朝前发出声音。而液晶电视不工作时，如图9和图10所示，小车系统30可带动音箱40自动缩回机身10的内部。驱动电机330为正反转电机，正转和反转时，小车系统30的运动方向刚好相反，从而小车系统30能够往返运动。小车系统30行走的驱动信号可由液晶电视设备上的功能按键控制，或由一控制设备(如遥控器)来发出信号。信号可以为红外、射频或蓝牙信号。此外,小车系统30行走的信号也可以由液晶电视自动控制,如液晶电视内置的软件根据需要自动伸出或者缩回音箱。当液晶电视开机的同时或者开机一段时间后，小车系统30的驱动电机330根据控制信号正转或者反转，最终实现音箱40的自动伸出或缩回。控制驱动电机330运转的具有控制芯片的控制电路板则可以设置在机身10的内部空间中。
由此，本申请上述实施例的平面显示设备及其音箱伸缩结构，利用导轨系统20，可实现音箱40先垂直向下运动再水平向前运动，能够实现朝前发声， 同时音箱40向前运动需要的空间较传统技术的斜向前运动方式小；此外，较上下往复式伸缩结构，在实现朝前发声的同时，上述实施例的音箱40能够调整到靠近屏幕110前方的位置，使外观简洁。
根据本申请的一些实施例，如图13所示，机身10的内部或者背部还可以设置位置传感器50。位置传感器用于检测小车系统30的运动轨迹。例如，利用位置传感器50检测音箱连接支架320的运动轨迹，当音箱连接支架320运动到使音箱40处于靠前位置(即其工作位置)时，位置传感器向控制电路板反馈信号，进而控制电路板控制驱动电机330停止运转。在本申请的其他实施例中，还可以通过设置驱动电机330的运转参数来实现对小车系统30运动轨迹的控制。例如，根据运动轨迹，预先设定好驱动电机330可以正转或者反转的圈数，当驱动电机330正转或者反转预定的圈数后自动停止运转。位置传感器可以为接触式或非接触式传感器。
根据本申请的一些实施例，参考图15和图16，驱动轮340为固定在驱动轴350上的驱动齿轮,第一驱动导轨210和第二驱动导轨220均为齿条。如此，第一驱动导轨210和第二驱动导轨220通过齿结构限定驱动轮340的行走轨迹，稳定性较好，同时能给予驱动轮340较强的反推力。
进一步地，在本申请的一些实施例中，如图14所示，驱动电机330的输出端上固定有主动齿轮331，小车系统30还包括转动安装于在小车支架310上的驱动轴350，且驱动轴350上固定有从动齿轮351。驱动电机330与驱动轮340之间的扭矩传递则通过主动齿轮331、从动齿轮351、驱动轴350实现。具体的，驱动电机330的输出端带动主动齿轮331旋转，主动齿轮331带动从动齿轮351旋转，从动齿轮351带动驱动轴350同步旋转，驱动轴350带动驱动轮340旋转。此种设计，通过齿轮机构可靠地传递动力，且结构紧凑，且齿轮机构的传动比根据实际需要可灵活设计。在本申请的其他实施例中，驱动电机330与驱动轮340之间的扭矩传递还可以通过其他结构实现，例如，在驱动电机330的输出端和驱动轴350上分别设置带轮，利用带来传递扭矩。
进一步地，在本申请的一些实施例中，一并参考图14、图15和图16，驱 动轴350的端部还设有限位件354，同时导轨系统20还包括设置在机身10上的约束限位件354行走轨迹的限位槽112。其中限位槽112的引导路径与导轨系统20的引导路径一致。如此，如图15和图16所示，在驱动轮340沿第一驱动导轨210和第二导轨220行走时，驱动轴350上的限位件354还在限位槽112约束下行走，从而提高整个小车系统30行走的稳定性，不至于偏摆。
限位件354设置为能够在限位槽112中滑动。优选地，限位件354采用轴承。轴承具有径向尺寸和轴向尺寸，因此可以限制小车系统30除运动方向外的其他自由度。此外，轴承在限位槽112中滑动时具有较小的摩擦力，使得滑动更为平顺，噪音较小。此外，限位件354还用于轴向限位驱动轮340。
限位槽112可以直接成型在机身10上，如成型在机身10的后壳上。此外，考虑到简化机身10成型工艺，限位槽112也可以是可拆卸地与机身10组接，二者可以卡接或者利用紧固件连接。本实施例中，请参考图16，在机身10上安装有筋板113，该筋板113与第一导轨210和第二导轨220的底座共同形成了限位槽112。
进一步地，在本申请的一些实施例中，如图14所示，小车系统30还包括安装在小车支架310上的过渡齿轮360，其中主动齿轮331通过该过渡齿轮360传递扭矩至从动齿轮351。通过设置了过渡齿轮360,能够增加驱动电机330的输出端与从动齿轮351之间的传递距离而无需使用大直径的齿轮,利于元件在机身10内部的排布。
在本申请的一些实施例中，参考图14，小车支架310包括第一支架311和第二支架312，及于中间将第一支架311和第二支架312连成整体的若干个连杆313。驱动轴350包括并排设置的第一驱动轴352和第二驱动轴353，其中第一驱动轴352的两端分别安装在第一支架311和第二支架312上，第二驱动轴353的两端分别安装在第一支架311和第二支架312上，第一驱动轴352的两端和第二驱动轴353的两端分别设有驱动轮340，且均对应设有一处的第一导轨210和第二导轨220。换言之，参考图15和16，以第一驱动轴352的右端和第二驱动轴353的右端为例，以上下方式设置有两处的导轨系统20，每个导轨 系统20包括第一驱动导轨210和第二驱动导轨220。第一驱动轴352的左端和第二驱动轴353的左端情况类似。因此，在本申请的一些实施例中，使用了双驱动轴驱动方式，第一驱动轴352和第二驱动轴353的两端处均利用驱动导轨约束并引导行走轨迹，系统的稳定性较好。可以理解地，在实际中可以根据需要增加驱动轴和驱动齿轮的数量。
进一步地，如图14所示，驱动电机330且位于第一驱动轴352和第二驱动轴353之间的位置。如此，充分利用第一驱动轴352和第二驱动轴353之间的空间，利于结构紧凑。驱动电机330通过电机支架332安装至第一支架311。
根据本申请的一些实施例，如图15和图16所示，第一驱动导轨210和第二驱动导轨220之间通过弧形导轨230连接过渡。具体的，第一驱动导轨210和第二驱动导轨220之间利用弧形导轨230衔接过渡，并形成为一个弧形的导向结构。小车支架310可以沿着该弧形的导向结构既实现垂直运动，又实现水平运动。如图5和16所示，当第一驱动导轨210和第二驱动导轨220均为齿条时，弧形导轨230为弧形的齿条，第一驱动导轨210、第二驱动导轨220和弧形导轨230整体为一个大致呈L形的齿条。小车系统30的最终运动轨迹也为一个L形，从而实现了将音箱40先垂直运动然后水平运动的需求。此外,第一驱动导轨210、第二驱动导轨220之间角度不限于垂直,例如二者呈锐角或钝角,这样只要第一驱动导轨210与屏幕平行，音箱40可以实现先垂直运动然后斜向前水平运动。还可以是，第一驱动导轨210、第二驱动导轨220呈环形，这样音箱40伸出时的路径和缩回时的路径刚好够成圆形。
在本申请的其他实施例中，第一驱动导轨210和第二驱动导轨220彼此靠的很近，但没有连接件。当驱动轮340在第一驱动导轨210上运动并到达第一驱动导轨210的端部时，可以仅利用限位槽112来引导驱动轴350的行走轨迹，此时由于转动直径较大，驱动轮340转动时仍可以直接过渡至与第二驱动导轨220的端部接触而无需过渡的连接件。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特 征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种音箱伸缩结构，应用于平面显示设备，该结构包括：
    导轨系统，设置于平面显示设备的机身，所述导轨系统包括相衔接的第一驱动导轨和第二驱动导轨，所述第一驱动导轨和第二驱动导轨的引导方向成角度设置；
    小车系统，由所述导轨系统约束行走轨迹，包括小车支架、与小车支架固定连接的音箱连接支架、安装在小车支架上的驱动电机、由驱动电机的输出端驱动旋转的驱动轮，所述驱动轮沿第一驱动导轨和第二驱动导轨限定的路径带动小车支架行走。
  2. 根据权利要求1所述的音箱伸缩结构，所述驱动轮为驱动齿轮,所述第一驱动导轨和第二驱动导轨均为齿条。
  3. 根据权利要求1所述的音箱伸缩结构，所述第一驱动导轨和第二驱动导轨的引导方向彼此垂直，或者共同构成环形的引导路径。
  4. 根据权利要求1所述的音箱伸缩结构，所述电机的输出端上固定有主动齿轮，所述小车系统还包括转动安装于在所述小车支架上的驱动轴，所述驱动轴上固定有从动齿轮。
  5. 根据权利要求4所述的音箱伸缩结构，所述小车系统还包括安装在所述小车支架上的过渡齿轮，所述主动齿轮通过所述过渡齿轮传递扭矩至所述从动齿轮。
  6. 根据权利要求4所述的音箱伸缩结构，所述驱动轴的端部还设有限位件，所述导轨系统还包括设置在所述机身上的约束所述限位件行走轨迹的限位槽。
  7. 根据权利要求4至6任一项所述的音箱伸缩结构，所述小车支架包括第一支架和第二支架，及于中间将所述第一支架和第二支架连成整体的若干个连杆，所述驱动轴包括并排设置的第一驱动轴和第二驱动轴，第一 驱动轴的两端分别安装在第一支架和第二支架上，第二驱动轴的两端分别安装在第一支架和第二支架上，第一驱动轴的两端和第二驱动轴的两端分别设有驱动轮。
  8. 根据权利要求1所述的音箱伸缩结构，所述第一驱动导轨和第二驱动导轨之间通过弧形导轨连接过渡。
  9. 一种平面显示设备，包括如权利要求1至8任一项所述的音箱伸缩结构，其中所述第一驱动导轨的引导方向平行于所述平面显示设备的屏幕，所述第二驱动导轨的引导方向垂直于所述屏幕。
  10. 根据权利要求9所述的平面显示设备，所述导轨系统安装在所述平面显示设备的机身的内部，所述音箱连接支架连接有音箱,所述音箱可伸出及缩进所述机身的内部。
PCT/CN2019/127148 2018-12-27 2019-12-20 平面显示设备的音箱伸缩结构及平面显示设备 WO2020135271A1 (zh)

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