Television backplane static rigidity testing device

Abstract

The utility model discloses a product physical performance detection technical field's television backboard static stiffness testing device, including support structure, the support structure below is equipped with the test space for the television backboard of measured disposition, the support structure is provided with first horizontal slide rail and second horizontal slide rail, first horizontal slide rail sliding is equipped with pressure test structure, second horizontal slide rail sliding is equipped with vertical displacement detection structure, second horizontal slide rail sliding is arranged in support structure, and the sliding direction is perpendicular to first horizontal slide rail, and the static stiffness detection of measured television backboard is realized in vertical direction to measured television backboard by vertical displacement monitoring structure in the deformation of measured television backboard in the detection process, whole structure is relatively simple, and there is no more complex drive structure and high precision structure, and the floor space is smaller, and the installation and dismounting are convenient, and the cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of product physical performance testing technology, and in particular to a device for testing the static stiffness of a television back panel. Background Technology

[0002] In the structure of an LCD TV, the back panel is a core supporting component, and its static stiffness directly determines the overall structural stability, screen flatness, and lifespan of the LCD TV. If the static stiffness of the back panel is insufficient, the TV is prone to problems such as back panel deformation, screen detachment, and even screen damage during use. Therefore, testing the static stiffness of the back panel is one of the key steps in the development and testing phase of an LCD TV.

[0003] Currently, there are many shortcomings in the testing devices for the static stiffness of LCD TV back panels: some testing devices have complex structures, requiring large and precision equipment, which not only has high purchase costs but also requires professional technicians to operate. For example, patent document CN210005195U proposes a stiffness tester that uses multiple electrically driven displacement structures to drive the detector to apply loads to the back panel and generate displacement for detection, testing the stiffness data of the back panel at different locations, and the load and displacement magnitude at each instant during continuous loading. The various moving structures of the testing equipment in the above-mentioned solution are complex, and the power structure is large in size, resulting in high cost and high operational skill, making it less suitable for convenient testing processes in production lines and R&D laboratories. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to improve the complex structure, high cost and high level of operation of the TV back panel stiffness testing equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A static stiffness testing device for a TV back panel includes a support structure, with a test space below the support structure for placing the TV back panel under test; the support structure is provided with a first horizontal slide rail and a second horizontal slide rail, the first horizontal slide rail is slidably provided with a pressure testing structure, and the second horizontal slide rail is slidably provided with a vertical displacement detection structure; the second horizontal slide rail is slidably provided on the support structure, and the sliding direction is perpendicular to the first horizontal slide rail. The pressure testing structure includes a slide block slidably connected to the first horizontal slide rail. A support frame extending vertically upward is provided at the upper end of the slide block. A movable frame is slidably provided on the support frame. A force-applying platform for placing a counterweight is fixedly connected to the top of the movable frame. An installation component is provided at the lower end of the force-applying platform. A pressure detector is connected to the installation component. The detection end of the pressure detector is vertically downward and located above the test space. An adjustable limiting component is provided between the support frame and the force-applying platform.

[0006] Furthermore, an adjustable locking element is provided between the aforementioned slide block and the aforementioned first horizontal slide rail.

[0007] Furthermore, the aforementioned support frame is provided with a vertical T-slot, the aforementioned movable frame is provided with a T-shaped slider that slides in cooperation with the aforementioned T-slot, the aforementioned T-shaped slider is provided with a first sliding wheel, and the aforementioned first sliding wheel rolls in cooperation with the inner wall of the aforementioned T-slot.

[0008] Furthermore, the aforementioned slide includes a base, the base being provided with a sliding hole adapted to the cross-sectional profile of the aforementioned first horizontal slide rail, and a second sliding wheel being provided on the inner wall of the sliding hole, the second sliding wheel being in rolling engagement with the outer wall of the aforementioned first horizontal slide rail.

[0009] Furthermore, the aforementioned support frame is equipped with reinforcing connectors.

[0010] Furthermore, the aforementioned limiting member includes a snap-fit ​​plate, one end of which is inserted into the connection gap between the aforementioned force-applying platform and the aforementioned moving member, and the lower wall of the other end abuts against the upper end of the aforementioned support frame.

[0011] Furthermore, the aforementioned second horizontal slide rail is configured to be multiple, parallel to the aforementioned first horizontal slide rail.

[0012] Furthermore, the aforementioned vertical displacement detection structure includes a displacement measuring instrument that is vertically slidably mounted on the aforementioned second horizontal slide rail, with the measuring end of the displacement measuring instrument pointing vertically downward toward the aforementioned test space.

[0013] Furthermore, the aforementioned mounting component includes multiple mounting clips, which are spaced apart on the side of the movable frame away from the support frame and at the bottom end of the force application platform. The distribution of the multiple mounting clips is adapted to the outer contour of the pressure detector, and all of the multiple mounting clips are engaged with the pressure detector.

[0014] The beneficial effects of this utility model are: The pressure detector can move horizontally by using a first horizontal slide rail in conjunction with a sliding base, allowing it to be adjusted to the optimal testing position. Furthermore, the sliding of the moving frame relative to the support allows for vertical pressure testing of the TV back panel under test. A vertical displacement monitoring structure tracks the deformation of the TV back panel during the testing process. The entire structure is relatively simple, without complex drive or high-precision components, requiring minimal floor space, and is easy to install and disassemble, resulting in low cost. Moreover, the operation is convenient and simple, improving the efficiency and ease of use of testing processes in production lines and R&D laboratories. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the working state of this utility model; Figure 3 This is a schematic diagram of the support structure of this utility model; Figure 4 This is a schematic diagram of the pressure testing structure of this utility model; The components in the diagram are labeled as follows: 1-Support frame, 2-Reinforcing connector, 3-T-slot, 4-Second sliding wheel, 5-Locking component, 6-T-slider, 7-Limiting component, 8-Force application platform, 9-Moving frame, 10-First sliding wheel, 11-Mounting buckle, 12-First horizontal slide rail, 13-Second horizontal slide rail, 14-Bracket mechanism, 15-Displacement measuring instrument, 16-Pressure detector, 17-Counterweight, 18-TV back panel under test. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1-4As shown in the embodiment of this application, a static stiffness testing device for a TV back panel is proposed, including a support structure. A testing space for placing the TV back panel 18 under test is provided below the support structure. The support structure is provided with a first horizontal slide rail 12 and a second horizontal slide rail 13. A pressure testing structure is slidably mounted on the first horizontal slide rail 12, and a vertical displacement detection structure is slidably mounted on the second horizontal slide rail 13. The second horizontal slide rail 13 is slidably mounted on the support structure, with its sliding direction perpendicular to the first horizontal slide rail 12. The pressure testing structure includes a slide block slidably connected to the first horizontal slide rail 12. A vertically upward extending support frame 1 is provided at the upper end of the slide block. A movable frame 9 is vertically slidably mounted on the support frame 1. A force-applying platform 8 for placing a counterweight 17 is fixedly connected to the top of the movable frame 9. An installation component is provided at the lower end of the force-applying platform 8, and a pressure detector 16 is connected to the installation component. The detection end of the pressure detector 16 is vertically downward and located above the testing space. An adjustable limiting component 7 is provided between the support frame 1 and the force-applying platform 8.

[0018] First, it should be noted that the pressure detector 16 can move horizontally through the first horizontal slide rail 12 in conjunction with the slide block, making it easy to adjust the pressure detector 16 to the optimal testing position. Moreover, through the sliding of the moving frame 9 relative to the support, the pressure detector 16 can detect the pressure of the TV back panel 18 under test in the vertical direction, ensuring accurate pressure values. The deformation of the TV back panel 18 under test is realized through the vertical displacement detection structure. The entire structure is relatively simple, without complex drive structures or high-precision structures, with a small footprint, convenient installation and disassembly, and low cost. Furthermore, the entire operation is convenient and simple, improving the efficiency and ease of operation of the testing process in the production line and R&D laboratory.

[0019] During operation, the TV back panel 18 to be tested is placed in the test space. A force is applied to the slide block, causing it to move so that the test end of the stiffness tester is aligned with the preset test point. The vertical displacement detection structure is moved to the preset test position. A counterweight 17 of appropriate weight is placed on the force application platform 8. The limiter 7 is slowly adjusted to make the force application platform 8 slowly descend. The force application platform 8 drives the moving frame 9 and the pressure detector 16 to slowly descend vertically until the force-bearing end of the pressure detector contacts the surface of the TV back panel 18 to be tested. The force application platform 8 is then slowly lowered until the force value displayed by the pressure detector 16 stabilizes at the preset value. At this point, the test force is kept constant. After the force value stabilizes, the displacement data of the vertical displacement detection structure is recorded in real time through an external data acquisition device. The difference between the final displacement value recorded by the vertical displacement detection structure and the initial displacement value is calculated, which is the total deformation of the TV back panel 18 under a constant force of 100 N. According to the static stiffness calculation formula (static stiffness K = F / ΔL, where F = 100 N, ΔL...), the deformation of the TV back panel 18 under a constant force of 100 N is calculated. (Total deformation), calculate the static stiffness value of the TV back panel 18 under test; if multiple tests are required, repeat steps 3-4, change the counterweight 17 of different weights or change different displacement measurement points and different force application points to obtain multiple sets of static stiffness data.

[0020] To ensure that the slide and the first horizontal slide rail 12 are relatively stable during operation and do not shift position, an adjustable locking element 5 is provided between the slide and the first horizontal slide rail 12. The locking element 5 can be a tightening bolt, which is screwed into the slide and tightens the first horizontal slide rail 12 to achieve a relatively fixed effect, or it can be a pin or a clamp locking element 5.

[0021] Specifically, the aforementioned slide includes a seat body, which has a sliding hole that is adapted to the cross-sectional profile of the first horizontal slide rail 12. A second sliding wheel 4 is provided on the inner wall of the sliding hole. The second sliding wheel 4 rolls with the outer wall of the first horizontal slide rail 12 to ensure that the seat body can stably achieve horizontal displacement on the first horizontal slide rail 12. The seat body is also provided with a limiting block to restrict the up and down floating of the second rolling pulley, thus ensuring the stability of the seat body.

[0022] The aforementioned support frame 1 is provided with a vertical T-slot 3, and the aforementioned movable frame 9 is provided with a T-slider 6 that slides in cooperation with the aforementioned T-slot 3. The aforementioned T-slider 6 is provided with a first sliding wheel 10, and the aforementioned first sliding wheel 10 rolls in cooperation with the inner wall of the aforementioned T-slot 3. Through the cooperation of the T-slot 3 and the T-slider 6, the movable frame 9 is stably guided during the sliding process, and there will be no shaking, deviation or falling off. The setting of the first sliding wheel 10 ensures the smoothness of the sliding process. By setting the roughness of the inner wall of the T-slot 3 and the outer wall of the first sliding wheel 10, a stable friction force is ensured, and the friction force is just enough to offset the self-weight of the movable frame 9 and the force application platform 8, thus ensuring the accuracy of the testing process.

[0023] Furthermore, to further ensure the rigidity of the support frame 1, the support frame 1 is equipped with a reinforcing connector 2. The support frame 1 is an L-shaped plate, including a horizontal plate and a vertical plate. The horizontal plate is horizontally connected to the upper end of the slide block, the force application platform 8 is set on the upper end of the vertical plate, and the movable frame 9 is slidably set on the side wall of the vertical plate away from the horizontal plate. The reinforcing connector 2 is an inclined support plate, with one end connected to the horizontal plate and the other end connected to the vertical plate, forming a stable triangular support. This prevents the support frame 1 from deforming during the test, which would cause changes in the verticality of the sensitivity detector and further improve the accuracy of the test process.

[0024] The aforementioned limiting component 7 includes a snap-fit ​​plate. One end of the snap-fit ​​plate is inserted into the connection gap between the aforementioned force-applying platform 8 and the aforementioned moving component, and the lower wall of the other end abuts against the upper end of the aforementioned support frame 1. The snap-fit ​​plate ensures that the force-applying platform 8 and the moving frame 9 will not slide downwards arbitrarily before the test, thus ensuring a stable pre-test preparation state.

[0025] Furthermore, in the actual testing process, in order to ensure that deformation displacement can be measured at multiple locations, the second horizontal slide rail 13 is set to be multiple and parallel to the first horizontal slide rail 12, so that multiple vertical displacement detection structures can be measured at multiple different locations, and the accuracy of the test can be achieved by combining the measurement results.

[0026] Specifically, the aforementioned vertical displacement detection structure includes a displacement measuring instrument 15 that is vertically slidably mounted on the second horizontal slide rail 13. The measuring end of the displacement measuring instrument 15 is vertically downward toward the test space. The displacement measuring instrument 15 is an existing displacement measurement sensing device that can accurately detect the deformation displacement of the TV back panel 18 under test.

[0027] The mounting components include multiple mounting clips 11, which are spaced apart on the side of the movable frame 9 away from the support frame 1 and at the bottom of the force application platform 8. The distribution of the mounting clips 11 is adapted to the outer contour of the pressure testing instrument 16, and all mounting clips 11 are engaged with the pressure testing instrument 16. The installation stability of the stiffness tester is ensured by the setting of multiple mounting clips 11, and the positional displacement of the stiffness tester during the test is avoided, which would cause inaccurate test results.

[0028] In summary, the static stiffness testing device for TV back panels proposed in this utility model has the following advantages: It has a simple structure, mainly composed of conventional mechanical parts, resulting in low production costs and ease of mass production; it is easy to operate, requiring no professional technicians, and the test can be completed simply by adjusting the moving components and replacing the counterweight 17, thus lowering the operational threshold; it has high testing accuracy, as the force measurement component and displacement measurement component work together to collect force and deformation data in real time, providing accurate basis for static stiffness calculation; it has strong adaptability, as the horizontal and vertical positions can be adjusted and the counterweight 17 can be replaced to meet the testing needs of LCD TV back panels of different sizes and structures; and it has good stability, with the design of components such as the reinforcing frame and limiters ensuring no shaking during the test, further improving the reliability of the test data.

Claims

1. A television backplane static rigidity test apparatus, characterized by, The device includes a support structure, with a test space below the support structure for placing the TV back panel (18) under test; the support structure is provided with a first horizontal slide rail (12) and a second horizontal slide rail (13), the first horizontal slide rail (12) is slidably provided with a pressure testing structure, and the second horizontal slide rail (13) is slidably provided with a vertical displacement detection structure; the second horizontal slide rail (13) is slidably provided on the support structure, and the sliding direction is perpendicular to the first horizontal slide rail (12); The pressure testing structure includes a slide block slidably connected to the first horizontal slide rail (12), a support frame (1) extending vertically upward is provided at the upper end of the slide block, a movable frame (9) is slidably provided on the support frame (1), a force application platform (8) for placing a counterweight (17) is fixedly connected to the top of the movable frame (9), an installation component is provided at the lower end of the force application platform (8), a pressure detector (16) is connected to the installation component, the detection end of the pressure detector (16) is vertically downward and located above the test space; an adjustable limiting component (7) is provided between the support frame (1) and the force application platform (8).

2. The television backplane static rigidity test apparatus of claim 1, wherein, An adjustable locking element (5) is provided between the slide block and the first horizontal slide rail (12).

3. The television backplane static rigidity test apparatus of claim 1, wherein, The support frame (1) is provided with a vertical T-shaped groove (3), and the movable frame (9) is provided with a T-shaped slider (6) that slides with the T-shaped groove (3). The T-shaped slider (6) is provided with a first sliding wheel (10), and the first sliding wheel (10) rolls with the inner wall of the T-shaped groove (3).

4. The television backplane static rigidity test apparatus of claim 1, wherein, The slide includes a seat body, which has a sliding hole adapted to the cross-sectional profile of the first horizontal slide rail (12). A second sliding wheel (4) is provided on the inner wall of the sliding hole, and the second sliding wheel (4) rolls with the outer wall of the first horizontal slide rail (12).

5. The television backplane static rigidity test apparatus of claim 1, wherein, The support frame (1) is provided with a reinforcing connector (2).

6. The television backplane static rigidity test apparatus of claim 1, wherein, The limiting member (7) includes a snap-fit ​​plate, one end of which is inserted into the connection gap between the force-applying platform (8) and the moving member, and the lower wall of the other end abuts against the upper end of the support frame (1).

7. The television backplane static rigidity test apparatus of claim 1, wherein, The second horizontal slide rail (13) is configured to be a plurality of parallel to the first horizontal slide rail (12).

8. The television backplane static rigidity test apparatus of claim 1, wherein, The vertical displacement detection structure includes a displacement measuring instrument (15) that is vertically slidably mounted on the second horizontal slide rail (13), with the measuring end of the displacement measuring instrument (15) pointing vertically downward toward the test space.

9. The television backplane static rigidity test apparatus of claim 1, wherein, The mounting component includes multiple mounting clips (11), which are spaced apart on the side of the movable frame (9) away from the support frame (1) and at the bottom of the force application platform (8). The distribution of the multiple mounting clips (11) is adapted to the outer contour of the pressure detector (16), and all the multiple mounting clips (11) are engaged with the pressure detector (16).

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