A kind of fixture for in-vehicle display screen pull-out force test

Abstract

The utility model discloses a kind of clamps for vehicle display screen pull-out force test in the field of automobile electronics, including equipment mounting table, base, equipment mounting table upper portion is equipped with base by screw mounting, to give test support effect to base, the upper portion of base is fixedly connected with the bottom end of guide column in both sides, the middle portion of guide column is slidably installed with linear bearing, the upper portion of base is installed vehicle display screen by screw, the upper portion of vehicle display screen is bonded installation pull plate one, pull plate one both sides fixedly sleeved installation linear bearing, the upper portion of pull plate one is set as pressing plate one, the top end of guide column is fixedly connected with the both sides of pressing plate one;The utility model can effectively test the pull-out force condition of actual product by this set of clamp, can more effectively guide the amount of glue in production and manufacturing bonding process, and by linear bearing can make pull-out force perpendicular to the product to be detected, can effectively reduce cost to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronics technology, specifically to a fixture for testing the pull-out force of an in-vehicle display screen. Background Technology

[0002] With the continuous development of science and technology, the assembly methods of various components in automotive in-vehicle system modules are also moving towards adhesives. To ensure the reliability of adhesives, major manufacturers provide tensile strength and shear strength data for product design reference. However, these tensile and shear strength values ​​are obtained by testing test strips of specific sizes. Actual in-vehicle displays, after adhesive bonding, exhibit the following characteristics: different assembly methods compared to the overall vehicle; varying surface quality of the bonding surfaces of in-vehicle system components; shape tolerances of various components; and cumulative tolerances after assembling multiple parts. These characteristics lead to a significant difference between the actual tensile and shear strength of the bonded in-vehicle display and the test strips provided by the manufacturer. This presents certain challenges to the structural development, manufacturing, and assembly of in-vehicle displays. Currently, most manufacturers simulate the stress conditions of the bonded in-vehicle display using simulation software or conduct pull-out tests by applying the same material as the product to a test block of the actual mass-produced adhesive width. While these methods can solve the problem to some extent, they differ significantly from the actual installation of in-vehicle displays and fail to provide convincing test data.

[0003] Therefore, a fixture for testing the pull-out force of vehicle-mounted displays is needed. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a fixture for testing the pull-out force of a vehicle display screen. The purpose is to achieve bonding between the top of the vehicle display screen product and the pull plate using high-strength foam adhesive. The bonding force is much greater than the structural adhesive strength between the components of the vehicle display screen itself. The relative position and connection method between the vehicle display screen product and the base are consistent with the actual working conditions of the vehicle assembly. At the same time, under the action of the guide rod and linear bearing, the pull-out force is perpendicular to the screen, which is closer to the actual vehicle environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixture for testing the pull-out force of a vehicle display screen, comprising a mounting platform and a base. The base is mounted on the upper part of the mounting platform by screws to provide testing support for the base. The upper two sides of the base are fixedly connected to the bottom ends of guide columns. A linear bearing is slidably mounted in the middle of the guide columns. A vehicle display screen is mounted on the upper part of the base by screws. A pull plate is bonded to the upper part of the vehicle display screen. Linear bearings are fixedly sleeved on both sides of the pull plate. The upper part of the pull plate is configured as a pressure plate. The two sides of the pressure plate are fixedly connected to the top ends of the guide columns.

[0006] Preferably, the upper part of the vehicle display screen is attached to the mounting plate using high-strength foam adhesive.

[0007] Preferably, a slot is symmetrically opened inward from the middle of the base, and fixing through holes are symmetrically opened on the base surface between the slots. The bottom surface of the vehicle display screen is set as a fixing plate, and the fixing plate is installed with screws corresponding to the slot and fixing through holes.

[0008] Preferably, the upper surface of the pull plate is provided with a screw hole, which is fixedly connected to an external push-pull force device.

[0009] Preferably, a test push-pull opening is evenly provided on one surface of the pressure plate, and the push-pull shaft of the push-pull force device is fixedly connected to the screw hole through the test push-pull opening.

[0010] In summary, this utility model provides a fixture for testing the pull-out force of vehicle-mounted displays. Compared with the prior art, the significant advantages of this utility model are: Factors such as the bonding surface quality, cumulative tolerance, and actual assembly angle of various components of automotive display products, especially when the size of the automotive display is large, show greater differences from existing technologies in testing. This fixture can effectively test the pull-out force of the actual product, and can more effectively guide the amount of glue used in the bonding process of production and manufacturing, prevent waste from excessive use, reduce costs to a certain extent, and improve the market competitiveness of automotive display products. For vehicle displays of different sizes and specifications, only the base needs to be replaced to make its installation close to that of the actual vehicle, which reduces the manufacturing cost of the fixture. The guide column and linear bearing ensure that the tension on the vehicle display screen is perpendicular to the screen during the pulling process of the pull plate. At the same time, the vehicle display screen product and the pull plate are bonded together by high-strength foam adhesive. The thickness of the foam adhesive can absorb most of the fixture assembly tolerances, making it closer to the whole vehicle installation. This invention can be applied to the bonding strength testing of various adhesive products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the fixture assembly for testing the pull-out force of a vehicle-mounted display screen according to this utility model; Figure 2 This is a cross-sectional structural diagram of the fixture assembly for testing the pull-out force of a vehicle-mounted display screen according to this utility model; In the diagram: 1. Equipment mounting platform; 2. Base; 3. Guide column; 4. Linear bearing; 5. Vehicle display screen; 6. Pull plate; 7. Pressure plate; 11. Groove; 12. Fixing through hole; 13. Fixing plate; 14. Screw hole; 15. Test push-pull port. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figures 1 to 2 As shown: This utility model is a fixture for testing the pull-out force of a vehicle display screen, including a mounting platform 1 and a base 2. The base 2 is mounted on the upper part of the mounting platform 1 by screws to provide testing support for the base 2. The upper two sides of the base 2 are fixedly connected to the bottom end of the guide post 3. A linear bearing 4 is slidably mounted in the middle of the guide post 3. The vehicle display screen 5 is mounted on the upper part of the base 2 by screws. The upper part of the vehicle display screen 5 is attached to the pull plate 6 by high-strength foam adhesive. The linear bearing 4 is fixedly sleeved on both sides of the pull plate 6. The upper part of the pull plate 6 is set as a pressure plate 7. The two sides of the pressure plate 7 are fixedly connected to the top end of the guide post 3.

[0014] The working principle of this utility model is as follows: 1. The pull plate 6 and the vehicle display product 5 are bonded together with high-strength foam adhesive. The top of the pull plate 6 is fixed to the push-pull shaft of the push-pull force device with screws, so that the pull plate 2 can slide up and down on the guide column 3 through the linear bearing 4, thereby conducting a pull-out test on the vehicle display product 5 to check whether the actual adhesive strength of the parts meets the design requirements. 2. For vehicle-mounted displays of different sizes and installation methods, only the base 2 needs to be replaced, which improves the interchangeability of the fixtures and reduces the manufacturing cost of the fixtures.

[0015] In at least one embodiment, in order to fix the base 2 and the vehicle display screen 5, a slot 11 is symmetrically opened inward from the middle of the base 2, and a fixing through hole 12 is symmetrically opened on the surface of the base 2 between the slots 11. The bottom surface of the vehicle display screen 5 is set as a fixing plate 13, and the fixing plate 13 is installed with screws corresponding to the slots 11 and the fixing through holes 12.

[0016] In at least one embodiment, the upper surface of the pull plate 6 is provided with a screw hole 14, which is fixedly connected to an external push-pull force device. The push-pull force device is stably fixedly connected to the pull plate 6 to test whether the actual adhesive strength of the parts meets the design requirements.

[0017] In at least one embodiment, the surface of the pressure plate 7 is uniformly provided with test push-pull openings 15, and the push-pull shaft of the push-pull force device is fixedly connected to the screw hole 14 through the test push-pull openings 15.

[0018] The embodiments described in this utility model are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the protection scope of this utility model.

Claims

1. A fixture for testing the pull-out force of a vehicle-mounted display screen, characterized in that, The equipment includes a mounting platform (1) and a base (2). The base (2) is mounted on the upper part of the mounting platform (1) by screws to provide test support for the base (2). The upper two sides of the base (2) are fixedly connected to the bottom of the guide column (3). A linear bearing (4) is slidably mounted in the middle of the guide column (3). The vehicle display screen (5) is mounted on the upper part of the base (2) by screws. A pull plate (6) is bonded to the upper part of the vehicle display screen (5). The linear bearing (4) is fixedly mounted on both sides of the pull plate (6). The upper part of the pull plate (6) is set as a pressure plate (7). The two sides of the pressure plate (7) are fixedly connected to the top of the guide column (3).

2. The fixture for testing the pull-out force of a vehicle-mounted display screen according to claim 1, characterized in that, The upper part of the vehicle display screen (5) is attached to the pull plate (6) by high-strength foam adhesive.

3. The fixture for testing the pull-out force of a vehicle-mounted display screen according to claim 1, characterized in that, A slot (11) is symmetrically opened inward from the middle of the base (2), and a fixing through hole (12) is symmetrically opened on the surface of the base (2) between the slots (11). The bottom surface of the vehicle display screen (5) is set as a fixing plate (13), and the fixing plate (13) is installed with screws corresponding to the slot (11) and the fixing through hole (12).

4. A fixture for testing the pull-out force of a vehicle-mounted display screen according to claim 1, characterized in that, The upper surface of the pull plate (6) is provided with a screw hole (14), which is fixedly connected to the external push-pull force device.

5. A fixture for testing the pull-out force of a vehicle-mounted display screen according to claim 4, characterized in that, The surface of the pressure plate (7) is uniformly provided with test push-pull openings (15), and the push-pull shaft of the push-pull force device is fixedly connected to the screw hole (14) through the test push-pull openings (15).

Images