CN113920896A - Pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions - Google Patents
Pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions Download PDFInfo
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- CN113920896A CN113920896A CN202111140715.3A CN202111140715A CN113920896A CN 113920896 A CN113920896 A CN 113920896A CN 202111140715 A CN202111140715 A CN 202111140715A CN 113920896 A CN113920896 A CN 113920896A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—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 being liquid crystals
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
Abstract
The invention relates to a pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions, which is characterized in that: the front panel assembly comprises a front shell assembly and an internal screen core assembly, the front shell assembly comprises a screen front panel, anti-collision cotton, shielding glass and a glass pressing frame, the shielding glass is fixed on the screen front panel through the glass pressing frame, and the anti-collision cotton is bonded on the glass pressing frame; the internal screen core assembly comprises a pressure-stabilizing air-floating type vibration-damping impact-resistant component, a screen installation transition plate, a screen reinforcing component, a liquid crystal screen and an AD conversion plate; the liquid crystal screen and the AD conversion plate are fixed on the screen reinforcement, one end of the pressure stabilizing air floating type vibration damping and impact resisting component is connected with the screen reinforcement, and the other end of the pressure stabilizing air floating type vibration damping and impact resisting component is installed on the screen installation transition plate; the pressure-stabilizing air-floating type vibration-damping impact-resistant component comprises an air-floating assembly, constant-pressure source hoses and constant-pressure sources, wherein the air-floating assembly is symmetrically arranged on two sides of the constant-pressure sources through the constant-pressure source hoses. The invention improves the vibration resistance grade of the large-size liquid crystal display, ensures the safety and the stability of the equipment and meets the requirement of application in a high-vibration environment.
Description
Technical Field
The invention belongs to the technical field of liquid crystal display, relates to vibration reduction and impact resistance control of a liquid crystal screen, and particularly relates to a pressure-stabilizing air-floating type liquid crystal display screen with vibration reduction and impact resistance functions.
Background
In a severe environment with high vibration and strong impact, large-sized liquid crystal displays have been widely used and have played an important role. With the development of the liquid crystal display device towards precision and integration and the more and more strong demand of localization, the problem of relatively low anti-vibration index of the localization liquid crystal display is amplified in the military field. As the anti-vibration index of the liquid crystal screen is gradually reduced along with the increase of the size of the liquid crystal screen, part of the liquid crystal array is easy to lose efficacy when being impacted, and the display section has an unrecoverable line. Therefore, the traditional reinforcing modes such as reinforcing the rigidity of the display, damping pads, reinforcing the toughened glass and the like cannot meet the current and future requirements.
At present, the vibration resistance index of a common 17-inch home-made liquid crystal screen is 0.0076mm below 57Hz, the vibration resistance index of the home-made liquid crystal screen above 57Hz is 9.8m/s2, and the vibration index of the home-made screen with a larger size is lower. When the conventional equipment is used for testing by using a reinforced type b standard in GJB 322A, the test index is 1mm below 15Hz, 9.8m/s2 above 15Hz, the test index is higher than the vibration index of the liquid crystal screen on a test frequency band, and the liquid crystal screen is easily subjected to unrecoverable line marks in a display area of the liquid crystal screen in the test process, so that the liquid crystal screen is subjected to unrecoverable damage. Therefore, the vibration resistance and impact resistance of the liquid crystal display are improved, and the high reliability of military display equipment is ensured.
In summary, how to improve the safety and stability of the domestic display device for applying to severe environments with high vibration and strong impact is a problem that needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the pressure-stabilizing air-floating type liquid crystal display screen which has the functions of vibration reduction and impact resistance, has high safety and strong stability, and is suitable for severe environments such as high vibration, strong impact and the like.
The invention solves the technical problems in the prior art by adopting the following technical scheme:
a pressure-stabilizing air-floating type liquid crystal display screen with vibration-reducing and impact-resisting functions comprises a front panel assembly and a rear shell which are arranged together, wherein the front panel assembly comprises a front shell assembly and an internal screen core assembly, and the internal screen core assembly is arranged on the inner side of the front shell assembly;
the front shell assembly comprises a screen front panel, anti-collision cotton, shielding glass and a glass pressing frame, wherein the shielding glass is fixed on the screen front panel through the glass pressing frame, and the anti-collision cotton is bonded on the glass pressing frame;
the internal screen core assembly comprises a pressure-stabilizing air-floating type vibration-damping impact-resistant component, a screen installation transition plate, a screen reinforcing component, a liquid crystal screen and an AD (analog-digital) conversion plate; the liquid crystal screen and the AD conversion plate are fixed on the screen reinforcement, one end of the pressure stabilizing air floating type vibration damping and impact resisting component is connected with the screen reinforcement, and the other end of the pressure stabilizing air floating type vibration damping and impact resisting component is installed on the screen installation transition plate; the pressure-stabilizing air-floating type vibration-damping impact-resistant component comprises air-floating components, constant-voltage source hoses and constant-voltage sources, wherein the four air-floating components are symmetrically arranged on two sides of the constant-voltage source through the four constant-voltage source hoses.
Further, the air floatation assembly comprises a bag body, two mounting plates, two lower fixing plates and a ventilation connecting piece; the two ends of the bag body are in an open state, the two sides of the bag body are both installed together with the fixing plate and the installation plate, and one installation plate is provided with a ventilation connecting piece which is communicated with a constant pressure source through a constant pressure source hose.
Further, the installation relation of the bag body, the two installation plates and the two lower fixing plates is as follows: the two sides of the opening edges of the capsule body are designed into skirts with circular cross sections, the two mounting plates and the two fixing plates corresponding to the skirts are designed into circular annular grooves, the two mounting plates are provided with screw holes and air flotation assembly mounting holes, and the two mounting plates and the two fixing plates clamp the skirts of the capsule body in the annular grooves through screws.
Further, the inner screen assembly is mounted on the inner side screen of the front shell assembly through a screen mounting stud.
The invention has the advantages and positive effects that:
1. the liquid crystal screen is arranged on the screen reinforcing piece, so that the liquid crystal screen is reinforced, the self rigidity of the liquid crystal screen is improved, the deformation of the liquid crystal screen is effectively avoided, the pressure stabilizing air floating type vibration reduction and impact resistance part is arranged on the screen reinforcing piece, the effect of low dynamic rigidity is effectively realized, the liquid crystal screen does not generate obvious displacement when being excited by an external environment, and the liquid crystal screen has the characteristics of high safety, strong stability and the like.
2. In order to avoid the collision phenomenon caused by large displacement of the liquid crystal screen, the front end and the periphery of the liquid crystal screen are provided with the anti-collision cotton structures, and in order to prevent the damage of the flat cables between the AD plate and the liquid crystal screen, the liquid crystal screen and the AD plate are arranged on the screen reinforcing piece, so that the connection flat cables are prevented from being twisted and bent.
3. The invention has compact structure, the added capsule and constant voltage source do not affect the screen installation element, and the invention can be safely and reliably installed on the standard cabinet and the platform body.
4. Under GJB 322A b class impact conditions, the transmission rate is about 0.4, the vibration reduction effect can reach more than 15dB during vibration, and the system can be adapted to screen structures with different sizes by adjusting the initial pressure of a constant voltage source, and is suitable for severe environments with strong vibration, high impact and the like.
5. The invention does not influence relevant assessment indexes such as electromagnetic compatibility, high and low temperature, salt spray, mould and the like.
6. The invention has reasonable design, improves the vibration resistance grade of the large-size liquid crystal display, ensures the safety and the stability of the screen display equipment, and meets the requirement that the large-size domestic display equipment can be applied in a high-vibration environment. The liquid crystal display has the similar overall dimension and display effect of the traditional display with the same model, has lower dynamic stiffness, has higher vibration resistance and impact resistance than the traditional reinforced liquid crystal display, and can be widely applied to various fields such as navigation, vehicle-mounted and the like.
Drawings
FIG. 1 is a view showing the configuration of the present invention;
FIG. 2 is a front panel assembly block diagram of the present invention;
FIG. 3 is a block diagram of the front housing assembly of the present invention;
FIG. 4 is a view of the internal screen assembly of the present invention;
FIG. 5 is a structural diagram of the pressure-stabilizing air-floating type vibration-damping impact-resisting part of the invention;
FIG. 6 is a schematic view of an air bearing assembly of the present invention;
in the figure, 1-a front panel assembly, 2-a rear shell, 3-a front shell assembly, 4-an internal screen core assembly, 5-a screen mounting stud, 6-anti-collision cotton, 7-shielding glass, 8-a glass pressing frame, 9-a pressure stabilizing air floating type vibration damping and impact resisting component, 10-a screen mounting transition plate, 11-a screen reinforcing component, 12-a liquid crystal screen, 13-an AD conversion plate, 14-a constant pressure source hose, 15-a constant pressure source, 16-a micro air floating assembly, 17-an air ventilation connecting piece, 18 lower mounting plate, 19-a sealing gasket, 20-a lower fixing plate, 21-a bag body, 22-an upper fixing plate and 23-an upper mounting plate.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A liquid crystal screen based on a pressure-stabilizing air-floating type is shown in figure 1 and comprises a front panel assembly (1) and a rear shell (2) which are arranged together.
As shown in fig. 2, the front panel assembly (1) comprises a front housing assembly (3), an internal screen core assembly (4), and screen mounting studs (5), wherein the internal screen core assembly (4) is mounted inside the front housing assembly (3) through the screen mounting studs (5).
As shown in fig. 3, the front shell assembly (3) is mainly composed of a screen front panel, anti-collision cotton (6), shielding glass (7) and a glass press frame (8). The shielding glass (7) is fixed on the front panel of the screen through a glass pressing frame (8), and the single surface of the anti-collision cotton (6) is coated with 3M glue and is adhered to the glass pressing frame (8). The front shell assembly (3) is mainly used for electromagnetic shielding, preventing the liquid crystal screen from colliding due to overlarge displacement and serving as a liquid crystal screen mounting base. The anti-collision cotton (6) is arranged around the glass pressing frame (8), so that the liquid crystal screen can be prevented from colliding with the screen panel structure when the liquid crystal screen is prevented from being excessively displaced.
As shown in fig. 4, the internal screen core assembly (4) mainly comprises a pressure-stabilizing air-floating type vibration-damping impact-resistant component (9), a screen mounting transition plate (10), a screen reinforcing member (11), a liquid crystal screen (12) and an AD conversion plate (13). The liquid crystal screen (12) is fixed on the screen reinforcing piece (11), so that the rigidity of the liquid crystal screen (12) can be increased, and more mounting positions (mounting holes are designed on the screen reinforcing piece) can be provided for mounting the liquid crystal screen (12). The AD conversion plate (13) is arranged on the screen reinforcement (11), one end of the pressure stabilizing air floating type vibration damping impact resistant component (9) is connected with the screen reinforcement (11), and the other end of the pressure stabilizing air floating type vibration damping impact resistant component is arranged on the screen installation transition plate (10).
As shown in fig. 5, the pressure-stabilizing air-floating type shock-absorbing and impact-resisting component (9) is used as a shock-absorbing and impact-resisting core component, and comprises air floating assemblies (16), constant-pressure source hoses (14) and constant-pressure sources (15), wherein the four air floating assemblies (16) are symmetrically installed on two sides of the constant-pressure sources (15) through the four constant-pressure source hoses (14). When the pressure stabilizing air floating type vibration damping and impact resisting component (9) is in the initial state, the pressure of a constant pressure source is set to be a certain constant value according to the actual size and weight of equipment, and after the pressure stabilizing air floating type vibration damping and impact resisting component is connected with the air floating assembly (16) through a constant pressure source hose (14), the internal pressure of the air floating assembly (16) can be kept constant all the time, so that the internal constant pressure of the air floating assembly is realized, the function of low dynamic stiffness is achieved, and the excellent buffering and vibration damping effects can be achieved in the vibration process. .
The air floatation assembly (16) mainly realizes the functions of supporting the liquid crystal screen, buffering the impact acceleration, attenuating the vibration magnitude and the like, and is the most important flexible connecting part for controlling the vibration of the liquid crystal screen. As shown in fig. 6, the air floating assembly (16) adopts a constant pressure thin-wall bag-shaped structure, and comprises a bag body (21), a lower mounting plate (18), an upper mounting plate (23), a lower fixing plate (20), an upper fixing plate (22) and a ventilation connecting piece (17). The utricule (21) is the main part of air supporting subassembly (16), its both ends are the open mode, the opening edge designs into the cross-section for circular shape shirt rim, lower mounting panel (18) that correspond with it, upper mounting panel (23), design circular annular groove on lower fixed plate (20) and upper fixed plate (22), be equipped with screw hole and air supporting subassembly mounting hole on two mounting panels (18, 23), two mounting panels and two fixed plates pass through the screw and press from both sides utricule (21) shirt rim clamp tightly in annular groove, circular annular groove and circular shirt rim multiplicable area of contact, guarantee the leakproofness of utricule (21) with this. The lower mounting plate (18) is provided with a ventilation connector (17), and the ventilation connector (17) and the constant pressure source hose (14) play a role in connecting the capsule body (21) and the constant pressure source (15).
The working principle of the invention is as follows: and adjusting the initial air pressure of the constant-pressure source to a proper value according to the physical characteristics of the equipment, so that the liquid crystal screen is in an air floatation state. When the device is impacted or vibrated, the capsule (21) undergoes reciprocating motion such as compression-recovery-stretching-recovery-compression … …. When the bag body (21) is compressed, the air is pressed into a constant pressure source, and the constant pressure source contains the bag body (21) and discharges the air; when the capsule body (21) is stretched, the constant pressure source supplies air to the capsule body (21), so that the air pressure in the capsule body (21) is consistent with the air pressure in the constant pressure source and is always in a constant state. In dynamic state, the internal pressure is constant, so the support reaction force of the bag body (21) can not change obviously, the effect of low dynamic rigidity is achieved, and better shock-absorbing and vibration-damping effects are achieved. The liquid crystal display device can ensure that the liquid crystal display does not generate obvious large displacement when the liquid crystal display generates impact and vibration in the external environment.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (4)
1. The utility model provides a steady voltage air supporting formula liquid crystal display with shock-resistant function of damping, is including installing front panel assembly and backshell together, its characterized in that: the front panel assembly comprises a front shell assembly and an internal screen assembly, and the internal screen assembly is arranged on the inner side of the front shell assembly;
the front shell assembly comprises a screen front panel, anti-collision cotton, shielding glass and a glass pressing frame, wherein the shielding glass is fixed on the screen front panel through the glass pressing frame, and the anti-collision cotton is bonded on the glass pressing frame;
the internal screen core assembly comprises a pressure-stabilizing air-floating type vibration-damping impact-resistant component, a screen installation transition plate, a screen reinforcing component, a liquid crystal screen and an AD (analog-digital) conversion plate; the liquid crystal screen and the AD conversion plate are fixed on the screen reinforcement, one end of the pressure stabilizing air floating type vibration damping and impact resisting component is connected with the screen reinforcement, and the other end of the pressure stabilizing air floating type vibration damping and impact resisting component is installed on the screen installation transition plate; the pressure-stabilizing air-floating type vibration-damping impact-resistant component comprises air-floating components, constant-voltage source hoses and constant-voltage sources, wherein the four air-floating components are symmetrically arranged on two sides of the constant-voltage source through the four constant-voltage source hoses.
2. The pressure-stabilizing air-floating type liquid crystal display screen with the functions of vibration reduction and impact resistance as claimed in claim 1, wherein: the air floatation assembly comprises a bag body, two mounting plates, two lower fixing plates and a ventilation connecting piece; the two ends of the bag body are in an open state, the two sides of the bag body are both installed together with the fixing plate and the installation plate, and one installation plate is provided with a ventilation connecting piece which is communicated with a constant pressure source through a constant pressure source hose.
3. The pressure-stabilizing air-floating type liquid crystal display screen with the functions of vibration reduction and impact resistance as claimed in claim 2, wherein: the installation relation of the bag body, the two installation plates and the two lower fixing plates is as follows: the two sides of the opening edges of the capsule body are designed into skirts with circular cross sections, the two mounting plates and the two fixing plates corresponding to the skirts are designed into circular annular grooves, the two mounting plates are provided with screw holes and air flotation assembly mounting holes, and the two mounting plates and the two fixing plates clamp the skirts of the capsule body in the annular grooves through screws.
4. A pressure-stabilizing air-floating type liquid crystal display panel with vibration-damping and impact-resisting functions as claimed in claim 1, 2 or 3, wherein: the inner screen assembly is mounted on the inner side of the front shell assembly through a screen mounting stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111140715.3A CN113920896A (en) | 2021-09-28 | 2021-09-28 | Pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111140715.3A CN113920896A (en) | 2021-09-28 | 2021-09-28 | Pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions |
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| CN113920896A true CN113920896A (en) | 2022-01-11 |
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| CN202111140715.3A Pending CN113920896A (en) | 2021-09-28 | 2021-09-28 | Pressure-stabilizing air-floating type liquid crystal display screen with vibration-damping and impact-resisting functions |
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| CN210270684U (en) * | 2019-09-03 | 2020-04-07 | 南京莱斯电子设备有限公司 | Multifunctional reinforced display |
| CN111969149A (en) * | 2020-08-25 | 2020-11-20 | 吴森利 | New energy automobile battery box |
| CN112038940A (en) * | 2020-09-01 | 2020-12-04 | 陈伟 | Effectual electric power cabinet of shock attenuation |
| CN113077713A (en) * | 2021-04-09 | 2021-07-06 | 上海天马微电子有限公司 | Display device |
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2021
- 2021-09-28 CN CN202111140715.3A patent/CN113920896A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398636A (en) * | 2008-09-17 | 2009-04-01 | 华中科技大学 | Precision vibration damping assembly and vibration damping platform composed of the assembly |
| CN201765406U (en) * | 2010-06-07 | 2011-03-16 | 研祥智能科技股份有限公司 | Reinforced display |
| CN201810716U (en) * | 2010-09-15 | 2011-04-27 | 潍坊学院 | Vehicle absorber |
| US20120137541A1 (en) * | 2010-12-07 | 2012-06-07 | Shelton Sports Co., Ltd. | Shock absorbing unit, sole and shoe having the same |
| CN105221648A (en) * | 2015-11-17 | 2016-01-06 | 东南大学 | A kind of variation rigidity air cushion shock absorber |
| CN208135159U (en) * | 2017-12-28 | 2018-11-23 | 镇江市高等专科学校 | A kind of petroleum storage storage tank with anti-static function |
| CN210270684U (en) * | 2019-09-03 | 2020-04-07 | 南京莱斯电子设备有限公司 | Multifunctional reinforced display |
| CN111969149A (en) * | 2020-08-25 | 2020-11-20 | 吴森利 | New energy automobile battery box |
| CN112038940A (en) * | 2020-09-01 | 2020-12-04 | 陈伟 | Effectual electric power cabinet of shock attenuation |
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