CN116437074A - High-temperature aging testing device for television - Google Patents
High-temperature aging testing device for television Download PDFInfo
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- CN116437074A CN116437074A CN202310704538.XA CN202310704538A CN116437074A CN 116437074 A CN116437074 A CN 116437074A CN 202310704538 A CN202310704538 A CN 202310704538A CN 116437074 A CN116437074 A CN 116437074A
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- 230000032683 aging Effects 0.000 title claims abstract description 51
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 59
- 238000009434 installation Methods 0.000 claims description 26
- 230000000007 visual effect Effects 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 12
- 239000000565 sealant Substances 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000012546 transfer Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Environmental & Geological Engineering (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention belongs to the technical field of television testing, and particularly relates to a television high-temperature aging testing device which comprises a supporting seat, a television main body, a front frame and a rear cover, wherein the front frame is arranged on the side wall of one side of the television main body, the rear cover is arranged on the side wall of the other side of the television main body, the side wall of one side of the supporting seat is obliquely arranged, and a lower mounting sleeve is fixedly arranged on the inclined surface of the supporting seat. The invention can simulate corresponding high temperature environment according to main heating working components in the television, so that the simulated high temperature environment is more close to reality, electric energy can be saved to a certain extent, energy saving is facilitated, the heat radiation performance and ageing resistance of the rear cover of the television can be tested, the high temperature ageing resistance of the sealant (sealing gasket) between the front frame of the television and the liquid crystal screen can be tested, the comprehensiveness of testing the high temperature ageing resistance of the television can be effectively improved, and the quality of products produced by a factory can be further improved.
Description
Technical Field
The invention belongs to the technical field of television testing, and particularly relates to a television high-temperature aging testing device.
Background
The television is the most common household appliance, and after the production is finished, the aging test of the whole television is required to be carried out, so that whether the television under extreme conditions works is kept with enough reliability and stability is simulated, the delivery quality of the television is ensured, and the product public praise is improved.
Because the television can generate heat when working, when carrying out the ageing test of television, need the simulation high temperature environment to make the television keep on the circular telegram work under high temperature environment, whether in order to observe the television can last reliable steady operation, like patent publication No.: CN212463400U, a high temperature aging device for liquid crystal tv is disclosed, that is, aging test is performed on the tv by simulating a high temperature environment;
however, in the prior art, when performing the high temperature aging test of the television, a plurality of televisions to be tested are placed in a high temperature room, and the television is tested by a mode of overall heating, but the heat generated when the power board, the main board, the logic board and the like of the television work is different, so that when the television is in actual use, when the rear shell of the television is touched by hands, the temperature of some places is high, the temperature of some places is low, and the mode of overall heating can simulate the extreme high temperature environment of the television, but the corresponding high temperature environment simulation cannot be performed for each working area of the television, so that the simulated high temperature environment is not close to the actual situation, the simulated high temperature environment is improved to the extreme value, the test effect of simulating the high temperature aging of the television can be ensured, but unnecessary electric energy waste can be caused, and meanwhile, the high temperature aging resistance performance of the television can be judged by observing whether the television works normally, but the judgment condition is single, and the test effect of the high temperature aging resistance of the television is not comprehensive.
Disclosure of Invention
The invention aims to solve the problems and provides a television high-temperature aging testing device.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the television high-temperature aging testing device comprises a supporting seat, a television main body, a front frame and a rear cover, wherein the front frame is arranged on one side wall of the television main body, the rear cover is arranged on the other side wall of the television main body, the side wall of one side of the supporting seat is obliquely arranged, a lower mounting sleeve is fixedly arranged on the inclined surface of the supporting seat, the rear cover is placed in the interior of the lower mounting sleeve, a plurality of isolation sleeves are fixedly arranged on the inclined surface of the supporting seat, the end parts of the isolation sleeves are respectively abutted against the side wall of the rear cover, a group of temperature measuring mechanisms are respectively arranged in the isolation sleeves, an energizing delay relay which is electrically connected with the temperature measuring mechanisms is fixedly arranged on the side wall of the supporting seat, a first electromagnetic switch, a power-off delay relay and a first acousto-optic alarm are fixedly arranged on the side wall of the supporting seat, the first electromagnetic switch is electrically connected with the energizing delay relay, a cavity is formed in the supporting seat, the cavity is fixedly provided with the inner part of the isolation sleeves, the temperature measuring mechanisms are fixedly connected with the pressure measuring mechanisms, and the pressure measuring mechanisms are fixedly connected with the wall of the supporting seat, and the pressure measuring mechanisms are fixedly connected with the wall of the pressure measuring mechanism;
the utility model discloses a TV set, including the fixed mounting of support seat, the fixed mounting of support seat is equipped with the fixed mounting of support seat, the pipe end of lower installation cover installs detachable well installation cover, the inner wall fixed mounting of well installation cover has a plurality of mutual fixed connection's of cover that heats, each the inside of cover that heats all fixed mounting has the electric heater, and each both ends of cover that heat are the offset setting with the lateral wall of back lid and TV set main part respectively, the pipe end of well installation cover installs detachable and installs the cover, the lateral wall fixed mounting of going up the installation cover has the frame, and the inside fixed mounting of frame has the transparent plate, the frame is the offset setting with the lateral wall of preceding frame with the tip, transparent plate and the common fixedly connected with reposition of redundant personnel detection mechanism of inflation mechanism, the lateral wall fixed mounting of going up the installation cover has trigger mechanism, and the lateral wall fixed mounting of supporting seat has the second audible alarm with total accuse switch with trigger mechanism electric connection.
Preferably, each temperature measuring mechanism includes the insulating tube that sets up in the spacer sleeve is inside, the open end encapsulation of insulating tube has the insulating guide Wen Chutou, the inside packing of insulating tube has heat conduction fluid, the tip fixed grafting of insulating tube has the insulator spindle, and the rod end fixedly connected with thermistor of insulator spindle, the lateral wall fixed mounting of supporting seat has a plurality of second electromagnetic switch, and each second electromagnetic switch all with corresponding thermistor electric connection.
Preferably, each pressing mechanism comprises a round sleeve fixedly arranged in the cavity, the rod wall of the insulating rod is in sliding connection with the cavity wall of the cavity, the rod end of the insulating rod extends to the inner side of the round sleeve, the inner side of the round sleeve is in sliding connection with a pushing piston, the side wall of the pushing piston is fixedly connected with the rod end of the insulating rod, the end part of the pushing piston is fixedly connected with a U-shaped pressing rod, the end part of the round sleeve is fixedly connected with a supporting frame, the end part of the supporting frame is fixedly connected with a first pressure switch, and the first pressure switch is located inside the U-shaped pressing rod.
Preferably, the inflation mechanism comprises an air pump fixedly installed in the installation hole, an output end of the air pump is fixedly communicated with the cavity together to form an inflation tube, and a normally closed electromagnetic valve is arranged in the inflation tube.
Preferably, the shunt detection mechanism comprises a shunt tube fixedly communicated with the inflation tube, a normally open electromagnetic valve connected with the normally closed electromagnetic valve in series is arranged in the shunt tube, a connecting hose is fixedly communicated with the tube end of the shunt tube, and the tube end of the connecting hose penetrates through the side wall of the transparent plate.
Preferably, the triggering mechanism comprises a hollow column fixedly inserted into the side wall of the upper mounting sleeve, the hollow column is communicated with the inside of the upper mounting sleeve, a touch-pressing piston is slidably arranged in the hollow column, a first spring is fixedly connected with the inner wall of the touch-pressing piston and the inner wall of the hollow column together, one end, far away from the touch-pressing piston, of the hollow column is fixedly connected with a second pressure switch, the second pressure switch is electrically connected with the second audible-visual annunciator, and the second pressure switch is electrically connected with the air pump.
Preferably, the terminal surface fixed mounting of frame board has a plurality of fixed barrels, each the inside of fixed barrel all is equipped with T shape rubber pole, and the pole wall of each T shape rubber pole all with the lateral wall sliding connection of frame board, each the rod end of T shape rubber pole all is the counterbalance setting with the LCD screen edge of TV set main part, each the tip of T shape rubber pole and the equal fixedly connected with second spring of the inner wall of homonymy fixed barrel.
Preferably, the side wall of the frame plate is provided with an air pressure hole at the position of the inner side of the transparent plate, and an air pressure valve is arranged in the air pressure hole.
Compared with the prior art, the television high-temperature aging testing device has the advantages that:
through the support seat that sets up, lower installation cover, well installation cover and the mutually supporting of last installation cover, can be used for installing the TV set main part, preceding frame and the back lid of TV set to be measured, and through the mutually supporting of the inside cover that heats that sets up of well installation cover, electric heater, can simulate corresponding high temperature environment according to the inside main work subassembly that generates heat of TV set, make the high temperature environment of simulation press close to reality more, and can save the electric energy to a certain extent, do benefit to energy-conservation.
Through the mutual cooperation of the isolation sleeve, the temperature measuring mechanism, the power-on delay relay, the first electromagnetic switch, the power-off delay relay and the first audible and visual alarm, the heat transfer efficiency of the television rear cover can be tested in the initial stage of the high-temperature aging test, and the television rear cover with poor heat dissipation capacity can be removed.
Through the mutually supporting of cavity, pressing mechanism, mounting hole and the inflation mechanism that set up, can carry out the high temperature aging resistant performance test to the TV set back lid to when the high temperature aging resistant performance of TV set back lid is not good, automatic triggering is reported to the police, thereby can improve the comprehensiveness to the high temperature aging resistant performance test of TV set, further improve the product quality of leaving the factory.
Through the mutually supporting of last installation cover, framed board, transparent plate, reposition of redundant personnel detection mechanism, trigger mechanism and second audible and visual alarm that set up, can utilize the air supply that detects the high temperature ageing resistance of lid behind the TV set, carry out the high temperature ageing resistance test of sealant (sealing gasket) between frame and the LCD screen before the TV set, further improve the comprehensiveness to the high temperature ageing resistance test of TV set.
Drawings
Fig. 1 is a schematic structural diagram of a high-temperature aging test device for a television set provided by the invention;
FIG. 2 is a schematic diagram of an explosion structure of a television high-temperature aging test device provided by the invention;
FIG. 3 is a schematic diagram of the internal structure of the cavity and the spacer sleeve of the television high-temperature aging test device provided by the invention;
fig. 4 is a schematic structural diagram of a temperature measuring mechanism and a pressing mechanism of the television high-temperature aging testing device provided by the invention;
fig. 5 is a schematic diagram of the internal structure of a heating jacket of the high-temperature aging testing device for a television set;
fig. 6 is a schematic diagram of the internal structure of the upper mounting sleeve of the television high-temperature aging testing device provided by the invention;
fig. 7 is a schematic structural diagram of a trigger mechanism of a tv set high-temperature aging test apparatus according to the present invention;
fig. 8 is a schematic diagram of the internal structure of a fixing barrel of the high-temperature aging testing device for a television set;
fig. 9 is a schematic side view of an upper mounting sleeve of a tv set high-temperature aging testing apparatus according to the present invention.
In the figure: the device comprises a supporting seat 1, a television main body 2, a front frame 3, a rear cover 4, a lower 5 mounting sleeve, an isolation sleeve 6, a temperature measuring mechanism 7, a heat insulation cylinder 71, an insulation guide Wen Chutou 72, a heat conduction oil liquid 73, an insulation rod 74, a thermistor 75, a second electromagnetic switch 76, an electrifying delay relay 8, a first electromagnetic switch 9, a power-off delay relay 10, a first audible and visual alarm 11, a cavity 12, a pressing mechanism 13, a round sleeve 131, a push piston 132, a contact rod 133U, a support bracket 134, a first pressure switch 135, a mounting hole 14, an inflation mechanism 15, an air pump 151, an inflation tube 152, a normally closed electromagnetic valve 153, a mounting sleeve 16, a heating sleeve 17, an electric heater 18, an upper 19 mounting sleeve 20, a frame plate 21, a transparent plate 22 shunt detection mechanism, a shunt tube 221, a normally open electromagnetic valve 222, a connecting hose 223, a trigger mechanism 23, a hollow column 231, a first spring 232 contact piston 233, a second pressure switch 234, a second audible and visual alarm 24, a second sound alarm 25, a total control switch 26, a fixed cylinder 27, a T, a rubber rod 28, a second spring 29 and a pneumatic valve 30.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1-9, a high temperature aging testing apparatus for a tv set includes a supporting seat 1, a tv set main body 2, a front frame 3 and a rear cover 4, wherein the front frame 3 is mounted on a side wall of one side of the tv set main body 2, and the rear cover 4 is mounted on a side wall of the other side of the tv set main body 2, and the tv set main body 2 includes components such as a power panel, a logic panel, a signal panel, a liquid crystal display screen, and a backlight module, which are not described herein.
The lateral wall of supporting seat 1 one side sets up for the slope, the inclined plane fixed mounting of supporting seat 1 has lower installation cover 5, back lid 4 is placed in the inside of lower installation cover 5, the inclined plane fixed mounting of supporting seat 1 has a plurality of isolation cover 6, and each isolation cover 6's tip all is the setting that offsets with the lateral wall of back lid 4, a set of temperature measuring mechanism 7 is all installed to each isolation cover 6's inside, the lateral wall fixed mounting of supporting seat 1 has the circular telegram time delay relay 8 with a plurality of temperature measuring mechanism 7 electric connection, the lateral wall fixed mounting of supporting seat 1 has first electromagnetic switch 9, outage time delay relay 10 and first audible-visual annunciator 11, first electromagnetic switch 9 and circular telegram time delay relay 8 electric connection, and first electromagnetic switch 9 is through outage time delay relay 10 and first audible-visual annunciator 11 electric connection, each temperature measuring mechanism 7 all includes the insulating cylinder 71 that sets up in isolation cover 6 inside, insulating guide Wen Chutou is packaged with the open end of insulating cylinder 71, the inside packing of insulating cylinder 71 has heat conduction fluid 73, insulating cylinder 71's tip fixed with insulating rod 74, and the second electromagnetic switch's 75 and the corresponding thermal resistor 76 of its fixed connection of thermal resistor 75, the second electromagnetic switch's 75 and the thermal resistor 76 of its corresponding to the thermal resistor of the fixed connection.
The cavity 12 is arranged in the supporting seat 1, a plurality of pressing mechanisms 13 fixedly connected with the temperature measuring mechanism 7 are fixedly arranged in the cavity 12, each pressing mechanism 13 is electrically connected with the first audible and visual annunciator 11, each pressing mechanism 13 comprises a round sleeve 131 fixedly arranged in the cavity 12, the rod wall of the insulating rod 74 is in sliding connection with the cavity wall of the cavity 12, the rod end of the insulating rod 74 extends to the inside of the round sleeve 131, the inner part of the round sleeve 131 is in sliding connection with a pressing piston 132, the side wall of the pressing piston 132 is fixedly connected with the rod end of the insulating rod 74, the end part of the pressing piston 132 is fixedly connected with a U-shaped pressing rod 133, the end part of the round sleeve 131 is fixedly connected with a supporting frame 134, the end part of the supporting frame 134 is fixedly connected with a first pressure switch 135, a gap between the inner wall of the U-shaped pressing rod 133 and the moving contact end part of the first pressure switch 135 is 1mm, the moving contact of the first pressure switch 135 is closed under the action of external pressure, and after the external pressure disappears, the moving contact can elastically return to the elastic element under the action of the elastic contact.
The side wall of the supporting seat 1 is provided with a mounting hole 14, the hole wall of the mounting hole 14 is fixedly provided with an air charging mechanism 15 communicated with the cavity 12, the lower end of the side wall of the supporting seat 1 is fixedly provided with a master control switch 25, the air charging mechanism 15 comprises an air pump 151 fixedly arranged in the mounting hole 14, the output end of the air pump 151 and the cavity 12 are fixedly communicated with an air charging pipe 152 together, a normally closed electromagnetic valve 153 is arranged in the air charging pipe 152, the air pump 151 is provided with a timing switch and a manual switch (not shown in the figure), the timing switch can be used for controlling the timing work of the air pump 151, after the master control switch 25 is started, the timing switch on the air pump 151 is synchronously started, and the manual switch can be convenient for an operator to control the work of the air pump 151 along with the start and stop, and the timing switch and the manual switch are all of the prior art, so that details are omitted;
the pipe end of the lower installation sleeve 5 is provided with a detachable middle installation sleeve 16, the inner wall of the middle installation sleeve 16 is fixedly provided with a plurality of heating sleeves 17 which are fixedly connected with each other, the inside of each heating sleeve 17 is fixedly provided with an electric heater 18, the two ends of each heating sleeve 17 are respectively propped against the rear cover 4 and the side wall of the television main body 2, the pipe end of the middle installation sleeve 16 is provided with a detachable upper installation sleeve 19, the side wall of the upper installation sleeve 19 is fixedly provided with a frame plate 20, the inside of the frame plate 20 is fixedly provided with a transparent plate 21, the frame plate 20 is propped against the end part of the frame plate and the side wall of the front frame 3, the transparent plate 21 and the inflation mechanism 15 are fixedly connected with a shunt detection mechanism 22 together, the shunt detection mechanism 22 comprises a shunt pipe 221 fixedly communicated with the inflation pipe 152, the inside of the shunt pipe 221 is provided with a normally open electromagnetic valve 222 connected with the normally closed electromagnetic valve 153 in series, the pipe end of the shunt pipe 221 is fixedly communicated with a connecting hose 223, the pipe end of the connecting hose 223 penetrates the side wall of the transparent plate 21, the electromagnetic valve 153 and the normally open electromagnetic valve 222 is connected with a timing switch of the air pump 151 in series, and the normally open electromagnetic valve 153 and the normally open electromagnetic valve 222 are connected with the timing switch of the air pump 151, when the normally open electromagnetic valve 153 is started by the timing switch.
The side wall of the upper mounting sleeve 19 is fixedly provided with a triggering mechanism 23, the side wall of the supporting seat 1 is fixedly provided with a second audible and visual alarm 24 electrically connected with the triggering mechanism 23, the triggering mechanism 23 comprises a hollow column 231 fixedly inserted into the side wall of the upper mounting sleeve 19, the hollow column 231 is communicated with the interior of the upper mounting sleeve 19, a touch-pressing piston 232 is slidably arranged in the hollow column 231, the touch-pressing piston 232 is fixedly connected with a first spring 233 together with the inner wall of the hollow column 231, one end of the hollow column 231 far away from the touch-pressing piston 232 is fixedly connected with a second pressure switch 234, the second pressure switch 234 is electrically connected with the second audible and visual alarm 24, the second pressure switch 234 is electrically connected with an air pump 151, a moving contact of the second pressure switch 234 is closed under the action of external pressure, a connecting loop of the second audible and visual alarm 24 and an external power supply can be connected at the moment, and after the external pressure disappears, the moving contact of the second pressure switch 234 is rebounded under the action of an elastic element.
The terminal surface fixed mounting of frame 20 has a plurality of fixed barrels 26, the inside of each fixed barrel 26 all is equipped with T shape rubber rod 27, and the pole wall of each T shape rubber rod 27 all is with the lateral wall sliding connection of frame 20, the rod end of each T shape rubber rod 27 all is the counterbalance setting with the LCD screen edge of TV set main part 2, the tip of each T shape rubber rod 27 and the inner wall of homonymy fixed barrel 26 all fixedly connected with second spring 28 jointly, under the effect of each second spring 28, can make the T shape rubber rod 27 on the frame 20 and the LCD screen edge counterbalance on the TV set main part 2, thereby do benefit to the high temperature and the LCD screen and the sealing gum (sealing pad) of the junction of preceding frame 3 contact, follow-up also be convenient for gaseous passing through, improve the accuracy of the ageing-resistant test of high temperature to the sealing gum (sealing pad) of LCD screen and preceding frame 3 junction.
The side wall of the frame plate 20 is provided with an air pressure hole 29 at the inner side of the transparent plate 21, and an air pressure valve 30 is arranged in the air pressure hole 29, so that when the high temperature aging resistance of the sealant (gasket) at the joint between the liquid crystal screen on the television main body 2 and the front frame 3 is qualified, the redundant air in the frame plate 20 can be conveniently discharged.
The principle of operation of the present invention will now be described as follows: the rear cover 4 of the television to be tested is detached from the television main body 2, the rear cover 4 of the television is arranged in the lower mounting sleeve 5, then the middle mounting sleeve 16 is propped against the rear cover 4, the middle mounting sleeve 16 is clamped with the lower mounting sleeve 5, then the television main body 2 and the front frame 3 are arranged in the middle mounting sleeve 16, at the moment, the main board, the power board and the logic board on the television main body 2 are respectively positioned in the heating sleeves 17, then the upper mounting sleeve 19 is clamped on the middle mounting sleeve 16, at the moment, the television main body 2, the front frame 3 and the rear cover 4 can be fixed on the supporting seat 1 through the upper mounting sleeve 19, the middle mounting sleeve 16 and the lower mounting sleeve 5;
connecting the television main body 2 with an external power supply, starting the television main body 2, then pressing a master control switch 25 by an operator, at the moment, electrifying and working the electric heaters 18 in the heating sleeves 17, heating the interiors of the heating sleeves 17 to a preset temperature by the electric heaters 18, at the moment, under the action of the heating temperature, if the high-temperature aging resistance of electronic elements on components such as a main board, a power board and a logic board on the television main body 2 is poor, affecting the normal display work of a liquid crystal screen of the television, and at the moment, checking whether the television can work normally by the operator, and judging whether the high-temperature aging resistance of the television main body 2 is qualified;
after the master control switch 25 is started, the power-on delay relay 8 is synchronously started, the power-on delay relay 8 can start the first electromagnetic switch 9 after 5 minutes, and after each electric heater 18 starts to work, heat generated by the power-on delay relay is transferred to each insulated heat conducting contact 72 through the rear cover 4, at this time, the heat can be transferred to the inside of the heat conducting oil 73 through the insulated heat conducting contact 72, so that the temperature of the thermistor 75 can be raised, the resistance of a connecting loop of the thermistor 75 and the corresponding second electromagnetic switch 76 can be lowered, so that the current flowing into the inside of the second electromagnetic switch 76 can be increased, if the heat transfer efficiency of each position of the rear cover 4 is better within 5 minutes after the master control switch 25 is started, the faster the heat is transferred to the insulated heat conducting contact 72, the higher the temperature is, the resistance of the thermistor 75 drops more, and the current flowing into the corresponding second electromagnetic switch 76 is larger at this time, so that the moving contact of the second electromagnetic switch 76 can be attracted, if the heat transfer efficiency of the position covered by each insulating guide Wen Chutou 72 at the rear cover 4 is qualified within 5 minutes after the start of the master switch 25, all the moving contacts of the second electromagnetic switch 76 will be closed within 5 minutes, at this time, the connection loop between the first electromagnetic switch 9 and the energizing delay relay 8 will be disconnected, so that the first electromagnetic switch 9 cannot be operated after the start of the master switch 25 for 5 minutes, at this time, the connection loop between the first electromagnetic switch 9 and the first audible and visual alarm 11 cannot be closed, so that the first audible and visual alarm 11 cannot perform alarm operation, and if within 5 minutes after the start of the master switch 25, the phenomenon that the heat transfer efficiency is poor at the position where the rear cover 4 is covered by each insulating conductor Wen Chutou 72 can cause that part of the moving contacts of the second electromagnetic switch 76 cannot be closed within 5 minutes, and at the moment, the connecting loop between the first electromagnetic switch 9 and the electrifying delay relay 8 cannot be opened within 5 minutes, so that after the master control switch 25 is started for 5 minutes, the first electromagnetic switch 9 can be electrified to work under the action of the electrifying delay relay 8, at the moment, the moving contacts of the first electromagnetic switch 9 are magnetically closed, so that the first audible and visual alarm 11 can perform alarm work, and under the action of the outage delay relay 10, even if the connecting loop between the first electromagnetic switch 9 and the electrifying delay relay 8 is opened within 5 minutes, the first audible and visual alarm 11 cannot be stopped, and the alarm duration of the first audible and visual alarm 11 is ensured;
when the master control switch 25 is started, the air pump 151 and the normally closed electromagnetic valve 153 are synchronously started, and the air pump 151 and the normally closed electromagnetic valve 153 are enabled to work for 10 seconds at regular time, at this time, air output by the air pump 151 can be quantitatively conveyed to the inside of the cavity 12, so that the air pressure in the cavity 12 can be increased, under the action of the air pressure, each push piston 132 can apply push force to the heat insulation cylinder 71 through the insulating rod 74, so that the insulating guide Wen Chutou 72 can apply push force to each position of the rear cover 4 of the television, if under the action of high temperature, the high temperature ageing resistance of the rear cover 4 is poor, the rear cover 4 can be easily deformed and becomes fragile, at this time, the rear cover 4 can be concavely deformed under the action of the push force, so that the heat insulation cylinder 71 can be provided with a displacement space, and then the U-shaped touch rod 133 can be driven by the insulating rod 74 and the push pistons 132 until the movable contact of the first pressure switch 135 is touched, then the connection loop of the first audible and visual alarm 11 and an external power supply is also turned on, and at this time, the first audible and visual alarm 11 can also work;
under the condition that the first audible and visual annunciator 11 does not give an alarm, after the high temperature aging test for not less than 12 hours is performed on the television, an operator disconnects the television from an external power supply and starts to manually start the air pump 151, at this time, air output by the air pump 151 is conveyed to the inside of the frame plate 20 through the air charging pipe 152 and the shunt pipe 221, if the high temperature aging resistance of a connecting sealing glue (sealing gasket) between the front frame 3 and the liquid crystal screen of the television main body 2 is better, at this time, as the air pressure in the frame plate 20 is increased, redundant air can flush the air pressure valve 30 in the air pressure hole 29 and is discharged, and if the high temperature aging resistance of the connecting sealing glue (sealing gasket) between the liquid crystal screen of the television main body 2 and the front frame 3 is poor, at this time, the sealing failure point is increased, air entering the inside of the frame plate 20 enters the inside of the upper mounting sleeve 19 through the connecting sealing failure part of the front frame 3 and the television main body 2, as the air entering is increased, the second pressing piston 232 is replaced by the contact piston 232 when the second pressing plug 232 is required to be replaced in time, and the second pressing plug 232 is required to be replaced by the second pressing plug, and the second pressing plug 232 is required to be replaced.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides a TV set high temperature aging testing device, includes supporting seat (1), TV set main part (2), preceding frame (3) and back lid (4), its characterized in that, preceding frame (3) are installed in the lateral wall of TV set main part (2) one side, and back lid (4) are installed in the lateral wall of TV set main part (2) opposite side, the lateral wall of supporting seat (1) one side is the slope setting, the inclined plane fixed mounting of supporting seat (1) has lower installation cover (5), the inside of installing cover (5) down is placed in back lid (4), the inclined plane fixed mounting of supporting seat (1) has a plurality of isolation sleeve (6), and the tip of each isolation sleeve (6) all is the counterbalance setting with the lateral wall of back lid (4), and each isolation sleeve (6) inside all installs a set of temperature measuring mechanism (7), the lateral wall fixed mounting of supporting seat (1) have with a plurality of temperature measuring mechanism (7) electric connection's circular telegram time delay relay (8), the lateral wall fixed mounting of supporting seat (1) has first electromagnetic relay (9), first electromagnetic relay (10) and first electromagnetic relay (11) electric connection time delay electromagnetic relay (11) and first electromagnetic relay (11) electric connection time delay electromagnetic relay (11), a cavity (12) is formed in the support seat (1), a plurality of pressing mechanisms (13) fixedly connected with the temperature measuring mechanisms (7) are fixedly arranged in the cavity (12), each pressing mechanism (13) is electrically connected with the first audible and visual alarm (11), a mounting hole (14) is formed in the side wall of the support seat (1), and an inflation mechanism (15) communicated with the cavity (12) is fixedly arranged on the wall of the mounting hole (14); the pipe end of lower installation cover (5) is installed detachable well installation cover (16), the inner wall fixed mounting of well installation cover (16) has a plurality of mutual fixed connection's cover (17) that heats, each the inside of cover (17) that heats is all fixed mounting has electric heater (18), and each both ends of cover (17) that heat are respectively with the lateral wall of back lid (4) and TV set main part (2) and are offset setting, the pipe end of well installation cover (16) is installed detachable and is installed cover (19), the lateral wall fixed mounting of cover (19) has deckle board (20), and the inside fixed mounting of deckle board (20) has transparent plate (21), deckle board (20) are offset setting with the lateral wall of preceding frame (3) with the tip, transparent plate (21) are fixed connection with reposition of redundant personnel detection mechanism (22) jointly with inflating mechanism (15), the lateral wall fixed mounting of cover (19) has trigger mechanism (23), and the lateral wall fixed mounting of supporting seat (1) has with trigger mechanism (23) electrical connection's second light source (24), the lateral wall of supporting seat (1) is fixed mounting has general alarm switch (25).
2. The high-temperature aging testing device for the television according to claim 1, wherein each temperature measuring mechanism (7) comprises a heat insulation barrel (71) arranged in the isolation sleeve (6), an insulation guide Wen Chutou (72) is packaged at the opening end of the heat insulation barrel (71), a heat conduction oil liquid (73) is filled in the heat insulation barrel (71), an insulation rod (74) is fixedly inserted into the end of the heat insulation barrel (71), a thermistor (75) is fixedly connected to the rod end of the insulation rod (74), a plurality of second electromagnetic switches (76) are fixedly arranged on the side wall of the supporting seat (1), and each second electromagnetic switch (76) is electrically connected with the corresponding thermistor (75).
3. The television high-temperature aging testing device according to claim 2, wherein each pressing mechanism (13) comprises a round sleeve (131) fixedly arranged in the cavity (12), the rod wall of the insulating rod (74) is slidably connected with the cavity wall of the cavity (12), the rod end of the insulating rod (74) extends to the inner part of the round sleeve (131), the inner part of the round sleeve (131) is slidably connected with a pushing piston (132), the side wall of the pushing piston (132) is fixedly connected with the rod end of the insulating rod (74), the end part of the pushing piston (132) is fixedly connected with a U-shaped contact rod (133), the end part of the round sleeve (131) is fixedly connected with a supporting frame (134), the end part of the supporting frame (134) is fixedly connected with a first pressure switch (135), and the first pressure switch (135) is arranged on the inner side of the U-shaped contact rod (133).
4. The television high-temperature aging testing device according to claim 1, wherein the air charging mechanism (15) comprises an air pump (151) fixedly installed inside the installation hole (14), an air charging pipe (152) is fixedly communicated with the output end of the air pump (151) and the cavity (12) together, and a normally closed electromagnetic valve (153) is arranged inside the air charging pipe (152).
5. The television high-temperature aging testing device according to claim 4, wherein the shunt detection mechanism (22) comprises a shunt tube (221) fixedly communicated with the inflation tube (152), a normally open electromagnetic valve (222) connected with the normally closed electromagnetic valve (153) in series is installed in the shunt tube (221), a connecting hose (223) is fixedly communicated with the pipe end of the shunt tube (221), and the pipe end of the connecting hose (223) penetrates through the side wall of the transparent plate (21).
6. The television high-temperature aging testing device according to claim 5, wherein the triggering mechanism (23) comprises a hollow column (231) fixedly inserted into the side wall of the upper mounting sleeve (19), the hollow column (231) is communicated with the interior of the upper mounting sleeve (19), a pressing piston (232) is slidably arranged in the hollow column (231), a first spring (233) is fixedly connected with the inner wall of the pressing piston (232) and the inner wall of the hollow column (231), a second pressure switch (234) is fixedly connected with one end, far away from the pressing piston (232), of the hollow column (231), the second pressure switch (234) is electrically connected with the second sound alarm (24), and the second pressure switch (234) is electrically connected with the air pump (151).
7. The television high-temperature aging testing device according to claim 1, wherein a plurality of fixing barrels (26) are fixedly installed on the end face of the frame plate (20), T-shaped rubber rods (27) are arranged in the fixing barrels (26), rod walls of the T-shaped rubber rods (27) are slidably connected with the side walls of the frame plate (20), rod ends of the T-shaped rubber rods (27) are abutted against the edge of a liquid crystal screen of the television main body (2), and second springs (28) are fixedly connected with the end portions of the T-shaped rubber rods (27) and the inner walls of the fixing barrels (26) on the same side.
8. The television high-temperature aging testing apparatus according to claim 1, wherein the side wall of the frame plate (20) is provided with an air pressure hole (29) at a position inside the transparent plate (21), and an air pressure valve (30) is installed inside the air pressure hole (29).
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| CN116437074B (en) | 2023-08-18 |
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