Pulling-out force detection device

Abstract

The utility model discloses a pulling-out force detection device. The pulling-out force detection device comprises a top clamping device and a bottom clamping device, the top clamping device comprises a clamping plate a, a locking hole a formed in the clamping plate a, a clamping groove a formed in one side of the clamping plate a and a clamping reinforcing piece a installed in the clamping groove a. The bottom clamping device comprises a clamping plate b, a locking hole b formed in the clamping plate b, a clamping groove b formed in one side of the clamping plate b and a clamping reinforcing piece b installed in the clamping groove b. According to the utility model, through an automatic test process, human intervention is reduced, the test efficiency and the data accuracy are obviously improved, and the uncertainty of a test result is reduced; and the standardized testing device and process enable the combination of the clamping strips and the decorative plates with different specifications and different materials to obtain consistent and reliable testing results, so that a scientific basis is provided for product quality evaluation.

Description

Technical Field

[0001] The utility model belongs to the field of automobile front windshield lower decorative plate assembly, and specifically relates to a pull-off force detection device. Background Art

[0002] With the development of the automobile industry, car windshields have gradually abandoned flat windshields and adopted curved glass. From an aerodynamic point of view, the oncoming airflow passing through the curved glass can reduce eddies and turbulence, thereby reducing air resistance. The overall coordination and beauty can also be felt visually. In addition to shielding from wind and rain, slowing down, and guiding air, the car windshield also has a safety protection function.

[0003] Because the decorative panel under the front windshield needs to match the vehicle body well after installation, in order to make the match meet the quality requirements, it is necessary to control the contour of the decorative panel under the front windshield to ensure that when the decorative panel under the front windshield is installed on the vehicle body, the gaps around it and other parts of the vehicle body are uniform; because the decorative panels under the front windshield are mass-produced, if traditional inspection methods are used, the inspection efficiency is too low, the inspection is not comprehensive, and the inspection accuracy is limited, further affecting the quality of the product.

[0004] However, there are an endless stream of testing devices in the industry, and it is impossible to effectively combine the fixing mechanism with the product, and it is impossible to provide real feedback on the test results. Utility Model Content

[0005] The utility model provides a pull-off force detection device, which solves the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pull-off force detection device, including a top clamping device and a bottom clamping device;

[0007] The top clamping device comprises a clamping plate a, a locking hole a provided on the clamping plate a, a clamping slot a provided on one side of the clamping plate a, and a clamping reinforcement sheet a installed in the clamping slot a;

[0008] The bottom clamping device comprises a clamping plate b, a locking hole b provided on the clamping plate b, a clamping slot b provided on one side of the clamping plate b, and a clamping reinforcement sheet b installed in the clamping slot b.

[0009] Preferably, the clamping plate a is composed of a straight plate portion, a clamping portion and a punching portion in sequence, and the locking hole a is connected to the card slot a.

[0010] Preferably, the clamping plate b is composed of a straight plate portion, a punching portion and a clamping portion in sequence, and the locking hole b is connected to the card slot b.

[0011] The beneficial effects of adopting the above technical solution are:

[0012] 1. Through the automated testing process, human intervention is reduced, the testing efficiency and data accuracy are significantly improved, and the uncertainty of the test results is reduced; and the standardized testing equipment and processes enable the combination of card strips and trim panels of different specifications and materials to obtain consistent and reliable test results, providing a scientific basis for product quality assessment.

[0013] Second, the clamping device maintains parallel force through the clamping reinforcement sheet, ensuring that the pulling force is always parallel to the product surface and applied along the predetermined direction, thereby ensuring the accuracy and reliability of the test results. The clamping reinforcement sheet can be selected and combined according to the specific shape and size of the product to fill the gap between the clamping device and the product, ensuring a tighter and more stable clamping effect, that is, it can easily meet the testing needs of products of different shapes, sizes and materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an assembly drawing provided by the utility model;

[0015] Figure 2 It is an isometric test diagram provided by the utility model;

[0016] Figure 3 It is a top view provided by the utility model;

[0017] in:

[0018] 1. Top clamping device; 11. Clamping plate a; 12. Locking hole a; 13. Slot a; 14. Clamping reinforcement sheet a; 2. Bottom clamping device; 21. Clamping plate b; 22. Locking hole b; 23. Slot b; 24. Clamping reinforcement sheet b. DETAILED DESCRIPTION

[0019] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0020] Specifically, Figures 1 to 3 As shown, a pull-off force detection device comprises a top clamping device 1 and a bottom clamping device 2;

[0021] The top clamping device 1 includes a clamping plate a11, a locking hole a12 formed on the clamping plate a11, a clamping slot a13 formed on one side of the clamping plate a11, and a clamping reinforcement sheet a14 installed in the clamping slot a13;

[0022] The bottom clamping device 2 includes a clamping plate b21, a locking hole b22 formed on the clamping plate b21, a clamping slot b23 formed on one side of the clamping plate b21, and a clamping reinforcement sheet b24 installed in the clamping slot b23.

[0023] It should be noted that this scheme is used to test the clamping strength between the lower clamping strip and the lower trim panel of the front windshield. When in use, first take a section of the lower clamping strip and install it in the slot b23 of the bottom clamping device 2, and then take part of the lower trim panel of the front windshield and install it in the slot a13 of the top clamping device 1, so that the two are clamped together, and then the top clamping device 1 and the bottom clamping device 2 are placed on a universal tensile testing machine, one of the devices is fixed, and then the other device is pulled, that is, the upward pulling force is parallel to the test force of the product, so as to obtain accurate test results.

[0024] In addition, the product and the device must be locked with nut accessories during use to ensure accurate results.

[0025] The clamping plate a11 is composed of a straight plate portion, a clamping portion and a punching portion in sequence, and the locking hole a12 is connected to the card slot a13.

[0026] The clamping plate b21 is composed of a straight plate portion, a punching portion and a clamping portion in sequence, and the locking hole b22 is connected to the card slot b23;

[0027] It should be noted that the structures of the card slot a13 and the card slot b23 are relatively different, and both are adapted to the corresponding fixed products.

[0028] The specific testing process is as follows

[0029] 1. Test preparation stage

[0030] 1 Equipment calibration: First, the universal tensile machine is strictly calibrated to ensure that the accuracy of the tensile sensor is within ±0.5% to ensure the accuracy of the test results. At the same time, check and adjust the clamping force of the top clamping device 1 and the bottom clamping device 2 to ensure that the tested sample can be firmly and non-destructively fixed.

[0031] 2. Sample preparation:

[0032] (1) Lower clamping strip: Select a representative lower clamping strip sample to ensure that the sample is not deformed or damaged and meets the design requirements. According to the test requirements, cut the lower clamping strip of appropriate length and install it in the clamping slot b23 of the bottom clamping device 2 to ensure that it is installed tightly without gaps.

[0033] (2) Front windshield lower trim: Similarly, select a front windshield lower trim sample that meets the standards, cut off the part that matches the lower clip, and install it in the clip slot a13 of the top clamping device 1. During the installation process, pay attention to adjusting the position to ensure that the clip point is accurate and simulate the actual assembly state.

[0034] 2. Test execution phase

[0035] 1. Fixing and loading:

[0036] The top clamping device 1 and the bottom clamping device 2 are respectively installed on the upper and lower clamps of the universal tensile machine. Usually, the bottom clamping device 2 is fixed to simulate the support condition of the lower trim panel of the front windshield when the vehicle is stationary.

[0037] Adjust the loading direction of the universal tensile testing machine to ensure that the tensile direction is completely parallel to the test force direction of the product, that is, perpendicular to the engagement surface between the lower clip strip and the lower trim panel of the front windshield, so as to simulate the worst stress condition.

[0038] 2. Apply load:

[0039] (1) Set the initial loading speed. It is generally recommended to increase the load by a certain percentage per minute (such as 50N / min) to avoid the impact effect caused by sudden loading.

[0040] (2) Gradually increase the pulling force until the engagement between the lower clip and the lower trim of the front windshield is observed to fail, that is, the two separate. At the same time, the universal tensile machine will automatically record and display the maximum pulling force value, which is the test result of the engagement strength.

[0041] 3. Data Analysis and Conclusion

[0042] 1. Data recording: In addition to the maximum tensile force value, the loading curve, failure mode (such as fracture, slippage, etc.) and any abnormal phenomena during the test should also be recorded.

[0043] 2. Data analysis: Compare the test results with product design specifications, industry standards or historical data to evaluate whether the snap-in strength meets the requirements. At the same time, analyze failure modes and identify potential design or manufacturing defects.

[0044] 3. Conclusion and suggestions: Based on the data analysis results, give clear test conclusions, point out whether the engagement strength meets the standards and whether improvement measures need to be taken. For the problems found, put forward specific improvement suggestions, such as optimizing structural design, enhancing material strength or improving production processes.

[0045] The specific working method is described below with specific embodiments: Example 1

[0046] This scheme is used to test the clamping strength between the lower clamping strip and the lower trim panel of the front windshield. When in use, first take a section of the lower clamping strip and install it in the slot b23 of the bottom clamping device 2, and then take a part of the lower trim panel of the front windshield and install it in the slot a13 of the top clamping device 1, so that the two are clamped together, and then the top clamping device 1 and the bottom clamping device 2 are placed on a universal tensile testing machine, one of the devices is fixed, and then the other device is pulled, that is, the upward pulling force is parallel to the product test force, and accurate test results are obtained.

[0047] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above-mentioned concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A pull-off force detection device, characterized in that: It comprises a top clamping device (1) and a bottom clamping device (2); The top clamping device (1) comprises a clamping plate a (11), a locking hole a (12) formed on the clamping plate a (11), a clamping groove a (13) formed on one side of the clamping plate a (11), and a clamping reinforcement sheet a (14) installed in the clamping groove a (13); The bottom clamping device (2) comprises a clamping plate b (21), a locking hole b (22) formed on the clamping plate b (21), a clamping slot b (23) formed on one side of the clamping plate b (21), and a clamping reinforcement sheet b (24) installed in the clamping slot b (23).

2. A pull-off force detection device according to claim 1, characterized in that: The clamping plate a (11) is composed of a straight plate portion, a clamping portion and a punching portion in sequence, and the locking hole a (12) is connected to the clamping slot a (13).

3. A pull-off force detection device according to claim 2, characterized in that: The clamping plate b (21) is composed of a straight plate portion, a punching portion and a clamping portion in sequence, and the locking hole b (22) is connected to the clamping slot b (23).

Images