A method for determining the parameters of the closing of a box door and a box door test device

Abstract

The present application relates to a method for determining the parameters of closing a box door and a box door test device, and relates to the technical field of vehicle test development. In this method, different types of sealing strips and decorative covers are freely combined and then the box door closing test is carried out on the box door test device to respectively obtain the gap between the decorative cover of the corresponding type and the box door surface of the box door test device when the box door is closed, and the closing force when the box door is closed. Then, data fitting is performed based on the gap and the closing force to obtain a fitting curve, so as to respectively determine the types of the sealing strip and the decorative cover that match the box door of the corresponding vehicle type according to the fitting curve and the parameter standard of the box door of the corresponding vehicle type. The method provided by the present application conducts multiple groups of tests on the built box door test device. Compared with using a trial-produced vehicle for verification, both the trial production cost and the time cost are significantly reduced, and the problem of poor consistency in the trial production state is avoided. Compared with using simulation, the accuracy of the test is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle test development, and particularly relates to a method for determining the closing parameters of a box door and a box door test device. Background Technique

[0002] Currently, in order to facilitate drivers to maintain vehicles, toolboxes outside the cab are the mainstream configuration of current commercial vehicles. The gap surface difference and closing force of the toolbox door are highly correlated with the vehicle quality impression and have an important impact on customers' willingness to purchase. Since there are many models of commercial vehicles and the requirements for the gap surface difference and closing force of the toolboxes of different models are different, therefore, in the verification and development stage, it is necessary to determine the models of the sealing strips and decorative covers that match the box doors of the corresponding models.

[0003] In related technologies, there are generally two common methods. The first method is to verify through physical prototypes of trial production vehicles. This process requires continuous trial and error and correction, consuming a large amount of trial production costs and time costs. Moreover, due to the existence of manufacturing tolerances of parts, the consistency of the trial production state cannot be guaranteed, and only a rough corresponding relationship can be obtained. The second method is through CAE simulation analysis. Although its test cost is low, in the simulation process, it involves complex non-linear dynamic processes, and it is difficult to accurately simulate the rebound force of the sealing strip and the stroke of the toolbox door being pushed out by the sealing strip. Therefore, the accuracy needs to be improved. Summary of the Invention

[0004] The embodiments of this application provide a method for determining the closing parameters of a box door and a box door test device to solve the problems of high trial production cost, high time cost, and low accuracy rate when determining the models of the sealing strips and decorative covers that match the box doors in related technologies.

[0005] In a first aspect, a method for determining the closing parameters of a box door is provided, and its steps include:

[0006] Build a box door test device;

[0007] After freely combining different models of sealing strips and decorative covers, perform a box door closing test on the box door test device to respectively obtain the gap between the decorative cover of the corresponding model and the box door surface of the box door test device when the box door is closed, and the closing force when the box door is closed;

[0008] Perform data fitting based on the gap and closing force to obtain a fitting curve, and respectively determine the models of the sealing strips and decorative covers that match the box doors of the corresponding models according to the fitting curve and the parameter standards of the box doors of the corresponding models.

[0009] In some embodiments, the performing a box door closing test on the box door test device after freely combining different models of sealing strips and decorative covers includes:

[0010] Install one type of the sealing strip on the body surface of the cabinet door test device, and install one type of the decorative cover on the inner side of the cabinet door of the cabinet door test device;

[0011] Conduct a cabinet door closing test to obtain the gap between the decorative cover and the body surface of the cabinet door test device when the cabinet door is closed, and the closing force when the cabinet door is closed;

[0012] Replace the decorative cover, and respectively obtain the gap between the decorative cover and the body surface of the cabinet door test device when conducting the cabinet door closing test with the corresponding type of sealing strip and the remaining different types of decorative covers, and the closing force when the cabinet door is closed;

[0013] Replace the sealing strip, and repeat the above steps until the gaps between the decorative covers and the body surface of the cabinet door test device when conducting the cabinet door closing test with all combinations of all different types of sealing strips and all different types of decorative covers are respectively obtained, and the closing force when the cabinet door is closed.

[0014] In some embodiments, the cabinet door closing test with freely combined different types of sealing strips and decorative covers includes:

[0015] Install one type of the sealing strip on the body surface of the cabinet door test device, and install one type of the decorative cover on the inner side of the cabinet door of the cabinet door test device;

[0016] Conduct a cabinet door closing test to obtain the gap between the decorative cover and the body surface of the cabinet door test device when the cabinet door is closed, and the closing force when the cabinet door is closed;

[0017] Replace the sealing strip, and respectively obtain the gap between the decorative cover and the body surface of the cabinet door test device when conducting the cabinet door closing test with the corresponding type of decorative cover and the remaining different types of sealing strips, and the closing force when the cabinet door is closed;

[0018] Replace the decorative cover, and repeat the above steps until the gaps between the decorative covers and the body surface of the cabinet door test device when conducting the cabinet door closing test with all combinations of all different types of decorative covers and all different types of sealing strips are respectively obtained, and the closing force when the cabinet door is closed.

[0019] In some embodiments, the types of the sealing strip include stiffness, and the types of the decorative cover include thickness.

[0020] In some embodiments, the steps of conducting a cabinet door closing test to obtain the gap between the corresponding type of decorative cover and the cabinet door surface of the cabinet door test device when the cabinet door is closed include:

[0021] Before installing the sealing strip of the corresponding model, perform initial calibration on the cabinet door so that the surface difference fluctuation between the cabinet door and the corresponding side of the cabinet door test device is not greater than 20% of the current initial average surface difference;

[0022] Install the decorative cover of the corresponding model, and obtain the initial average surface difference between the calibrated cabinet door and the corresponding side of the cabinet door test device, as well as the initial spacing between the decorative cover and the cabinet door profile of the cabinet door test device;

[0023] Install the sealing strip of the corresponding model, obtain the actual average surface difference between the current cabinet door and the corresponding side of the cabinet door test device, and calculate the gap between the current decorative cover and the cabinet door profile of the cabinet door test device based on the initial average surface difference, initial spacing and actual average surface difference.

[0024] In some embodiments, the steps of performing a cabinet door closing test to obtain the closing force when the cabinet door is closed include:

[0025] Determine at least one measurement point on each side of the outer surface of the cabinet door;

[0026] Obtain the force value data of each measurement point when the cabinet door is closed;

[0027] Determine the maximum force value of each force value data, and calculate the closing force when the cabinet door is closed based on all the maximum force values.

[0028] In some embodiments, before performing the first cabinet door closing test for the corresponding vehicle model, fix the cabinet door test device to the platform below it and counterweight the cabinet door test device with the corresponding weight.

[0029] In a second aspect, there is provided a cabinet door test device for implementing the method as described above, which includes:

[0030] A cabinet door profile, with a cabinet door provided on one side of the cabinet door profile;

[0031] Multiple sealing strips and decorative covers of different models, the sealing strip is detachably provided on the cabinet door profile, and the decorative cover is detachably provided on the inner side of the cabinet door;

[0032] A monitoring and analysis unit for obtaining the gap between the decorative cover of the corresponding model and the cabinet door profile when the cabinet door is closed, as well as the closing force when the cabinet door is closed, and performing data fitting on the basis of the gap and the closing force to obtain a fitting curve, so as to respectively determine the models of the sealing strip and the decorative cover that match the cabinet door of the corresponding vehicle model according to the fitting curve and the parameter standard of the cabinet door of the corresponding vehicle model.

[0033] In some embodiments, the door test device further includes a test bracket, on which a test body is provided. An opening is provided on the test body, and a door profile is provided along the edge of the opening. A door is hinged to the test body.

[0034] A plurality of rollers are provided at intervals at the bottom of the test bracket, and a braking member is provided on each roller.

[0035] At least one support assembly is provided on each side of one pair of opposite sides of the test bracket. Each support assembly is inclined, with one end connected to the test bracket and the other end adapted to be provided on a platform below.

[0036] In some embodiments, the sealing strip is snap-connected to the door profile, and the decorative cover is snap-connected to the door or connected by threads.

[0037] The beneficial effects brought by the technical solutions provided in this application include:

[0038] The embodiment of this application provides a method for determining the door closing parameters. Since different types of sealing strips and decorative covers are freely combined and then the door closing test is carried out on the door test device, the gap between the decorative cover of the corresponding type and the door profile of the door test device when the door is closed, and the closing force when the door is closed can be obtained respectively. Then, data fitting is performed based on the gap and the closing force to obtain a fitting curve. Finally, according to the fitting curve and the parameter standard of the door of the corresponding vehicle type, the types of the sealing strip and the decorative cover that match the door of the corresponding vehicle type can be determined respectively. Therefore, through multiple groups of tests carried out on the built door test device, this method can compare the parameter standard of the door of the corresponding vehicle type according to the fitting curve calculated from the test parameters, so as to determine the types of the sealing strip and the decorative cover that match it. Compared with using a trial production vehicle for verification, the trial production cost and time cost are significantly reduced, and the problem of poor consistency in the trial production state is avoided. Compared with using simulation, the accuracy of the test is greatly improved. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a schematic structural diagram of the door test device provided by the embodiment of this application;

[0041] Figure 2 It is a partial top view schematic diagram of the door test device provided by the embodiment of this application;

[0042] Figure 3 Schematic diagram of the partial structure of the door test device provided by the embodiment of the present application when determining the initial average surface difference and the initial average surface difference;

[0043] Figure 4 Schematic diagram of the partial structure of the door test device provided by the embodiment of the present application when determining the actual average surface difference;

[0044] Figure 5 Fitting curve of the method for determining the door closing parameters provided by the embodiment of the present application.

[0045] In the figure: 1-door profile, 2-door, 3-sealing strip, 4-decoration cover, 5-test bracket, 50-roller, 51-braking part, 6-test body, 60-opening, 7-electronic digital display dynamometer. Detailed implementation manners

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0047] The embodiment of the present application provides a method for determining the door closing parameters, which can solve the problems of high trial production cost, high time cost, and low accuracy rate when determining the models of the sealing strip and the decoration cover for door matching in the related art.

[0048] See Figure 1 and Figure 2 As shown in

[0049] Specifically, the box door test device is a device manufactured by simulating the toolbox door and the surrounding vehicle body environment. Its main structure includes a test bracket 5. The test bracket 5 is the base part of the entire device. For the convenience of movement, a plurality of rollers 50 are provided at intervals at the bottom of the test bracket 5. In an actual scenario, due to the large weight of the vehicle itself, when the box door 2 is closed or opened, the vehicle itself basically does not shake at all. However, since the box door test device is relatively light in overall mass and simple in structure, during the test of opening and closing the box door 2, the entire device may vibrate significantly or even move slightly due to the opening and closing of the box door 2. In order to restore and approximate the real scenario as much as possible, a braking member 51 is provided on each of the rollers 50. At the same time, at least one support assembly is provided on each side of one set of opposite sides of the test bracket 5. Each support assembly is inclined, with one end connected to the test bracket 5 and the other end for being arranged on the platform below.

[0050] Specifically, since the box door test device is easy to manufacture and can be applied to many different models of commercial vehicles for testing, with high versatility, therefore, by conducting multiple groups of tests on the built box door test device, the parameter standards of the box door 2 of the corresponding vehicle model can be compared with the fitting curve calculated from the test parameters, so as to determine the models of the sealing strip 3 and the decorative cover 4 that match it. Compared with using a trial-produced vehicle for verification, both the trial-production cost and the time cost are significantly reduced, and the problem of poor consistency in the trial-production state is avoided. Compared with using simulation, the accuracy of the test is greatly improved.

[0051] Further, the steps of performing the box door closing test on the box door test device after freely combining different models of the sealing strip 3 and the decorative cover 4 specifically include:

[0052] Install one model of the sealing strip 3 on the box body surface of the box door test device, and install one model of the decorative cover 4 on the inner side of the box door 2 of the box door test device;

[0053] Perform the box door closing test to obtain the gap between the decorative cover 4 and the box body surface of the box door test device when the box door 2 is closed, and the closing force when the box door 2 is closed;

[0054] Replace the decorative cover 4, and respectively obtain the gap between the decorative cover 4 and the box body surface of the box door test device when performing the box door closing test of the corresponding model of the sealing strip 3 and the remaining different models of the decorative cover 4, and the closing force when the box door 2 is closed;

[0055] Replace the sealing strip 3 and repeat the above steps until the gaps between the decorative cover 4 and the box body surface of the box door test device and the closing force when the box door 2 is closed are obtained respectively for all combinations of the sealing strips 3 of all different models and the decorative covers 4 of all different models.

[0056] Specifically, since the sealing strip 3 affects the closing force of the box door 2 and the decorative cover 4 affects the size of the gap between the decorative cover 4 and the box body surface when the box door 2 is closed, therefore, before determining the models of the sealing strip 3 and the decorative cover 4 suitable for the corresponding vehicle model, multiple groups of tests are first carried out. Since both the sealing strip 3 and the decorative cover 4 are variables, in this embodiment, first take a certain model of the sealing strip 3 as a constant and test it in turn with different models of the decorative cover 4. After a certain model of the sealing strip 3 has been combined with all models of the decorative cover 4, then replace the model of the sealing strip 3 and re-combine the replaced sealing strip 3 with a new model with different models of the decorative cover 4 and repeat the test again. Although the above combination test needs to be repeated many times, the whole process is very convenient to operate, and the fitting curves calculated according to the test parameters after the combination test of various different models of the sealing strip 3 and the decorative cover 4 are shown in Figure 5 As shown, combined with the parameter standards of the box door 2 of the corresponding vehicle model, the models of the sealing strip 3 and the decorative cover 4 matching the corresponding vehicle model can be clearly determined, which is convenient for quickly determining the models of the sealing strip 3 and the decorative cover 4 matching other models of vehicles subsequently.

[0057] Further, the steps of freely combining different models of the sealing strip 3 and the decorative cover 4 and then carrying out the box door closing test specifically include:

[0058] Install one model of the sealing strip 3 on the box body surface of the box door test device, and install one model of the decorative cover 4 on the inner side of the box door 2 of the box door test device;

[0059] Carry out the box door closing test to obtain the gap between the decorative cover 4 and the box body surface of the box door test device when the box door 2 is closed, and the closing force when the box door 2 is closed;

[0060] Replace the sealing strip 3 and respectively obtain the gap between the decorative cover 4 of the corresponding model and the remaining different models of the sealing strip 3 and the closing force when the box door 2 is closed during the box door closing test;

[0061] Replace the decorative cover 4 and repeat the above steps until the gaps between the decorative cover 4 of all different models and the box body surface of the box door test device and the closing force when the box door 2 is closed are obtained respectively for all combinations of the decorative covers 4 of all different models and the sealing strips 3 of all different models during the box door closing test.

[0062] Specifically, in this embodiment, compared with the above embodiment, the difference in this embodiment is that the decorative cover 4 is determined as a fixed quantity at the beginning, and then it is combined with sealing strips 3 of different models for testing in sequence. After the decorative cover of a certain model is combined with all models of the sealing strips 3, the model of the decorative cover 4 is replaced, and the replaced decorative cover 4 with a new model is recombined with the sealing strips 3 of different models and the test is repeated again. The fitting curves and accuracies obtained by the two embodiments do not have much difference. Since the connection method between the sealing strip 3 and the door profile 1 is snap connection, and considering the firmness and reduction of influence, the connection method between the decorative cover 4 and the inner side of the door 2 is preferably bolt connection. The bolt connection is time-consuming and laborious during the installation and disassembly process. Therefore, the solution of this embodiment has improved in terms of test efficiency and workload compared with the above embodiment. Therefore, from the perspective of preference, this embodiment is preferably adopted.

[0063] Further, the models of the sealing strip 3 include stiffness, and the models of the decorative cover 4 include thickness. Specifically, the material of the sealing strip 3 is plastic, which has a certain deformation ability. Therefore, the stiffness of the sealing strip 3 is the most critical influencing factor. Similarly, the decorative covers 4 installed on different models of 2 have different thicknesses, and the change in thickness will directly affect the gap when closing. Therefore, the model of the decorative cover 4 is mainly thickness.

[0064] Further, referring to Figure 3 and Figure 4 as shown, the steps of performing a door closing test to obtain the gap between the decorative cover 4 of the corresponding model and the door profile 1 of the door test device when the door 2 is closed include:

[0065] Before installing the sealing strip 3 of the corresponding model, perform initial calibration on the door 2 so that the surface difference fluctuation between the door 2 and the corresponding side of the door test device is not greater than 20% of the current initial average surface difference;

[0066] Install the decorative cover 4 of the corresponding model, obtain the initial average surface difference between the calibrated door 2 and the corresponding side of the door test device, and obtain the initial distance between the decorative cover 4 and the door profile 1 of the door test device;

[0067] Install the sealing strip 3 of the corresponding model, obtain the actual average surface difference between the current door 2 and the corresponding side of the door test device, and calculate the gap between the current decorative cover 4 and the door profile 1 of the door test device according to the initial average surface difference, the initial distance, and the actual average surface difference.

[0068] Specifically, to ensure accuracy, before installing the sealing strip 3 of the corresponding model, the cabinet door 2 is initially calibrated so that the surface difference between the cabinet door 2 and the corresponding side of the cabinet door test device is as uniform as possible. Refer to Figure 3 shown in A in Figure 3 . A is the initial average surface difference after adjustment. Subsequently, the decorative cover 4 of the corresponding model is installed. To ensure the accuracy of measurement, generally 12 measurement points are selected on the edge of the cabinet door 2, 3 on each side, to measure the corresponding side between the cabinet door 2 and the cabinet door test device. At the same time, 12 corresponding measurement points are selected on the other side to measure the initial distance between the decorative cover 4 and the cabinet door surface 1 of the cabinet door test device. Refer to Figure 4 shown in B in

[0069] . B is the initial distance. Similarly, refer to

[0070] shown in C, C is the actual average surface difference after closing the door, D is the thickness of the device cover, and E is the gap after closing the door. Finally, the sealing strip 3 of the corresponding model is installed, the cabinet door 2 is closed, and an electronic digital display dynamometer 7 is used to measure the force value data when the cabinet door is closed. Usually, the measurement point for measuring the closing force is agreed to be the position of the cabinet door 2 close to the tool door lock bolt.

[0071] Specifically, in the actual scenario, since the vehicle itself is very heavy, when closing or opening the cabinet door 2, the vehicle itself basically does not shake at all. However, the cabinet door test device has a relatively light overall mass and a simple structure. Therefore, during the test of opening and closing the cabinet door 2, the entire device may vibrate significantly or even move slightly due to the opening and closing of the cabinet door 2. To restore and approximate the real scenario as much as possible, before the first cabinet door closing test for the corresponding vehicle model, the cabinet door test device is fixed to the platform below it using the support assembly to reduce the possibility of being affected by vibration or movement. On this basis, a counterweight block is also added to the test bracket 5.

[0072] The present application also provides a door test device for implementing any of the above methods. The door test device includes a door profile 1, a plurality of sealing strips 3 with different models, a decorative cover 4, and a monitoring and analysis unit. One side of the door profile 1 is provided with a door 2. The sealing strip 3 is detachably provided on the door profile 1 selectively. The decorative cover 4 is detachably provided on the inner side of the door 2 selectively. The monitoring and analysis unit is used to obtain the gap between the decorative cover 4 of the corresponding model and the door profile 1 when the door 2 is closed, and the closing force when the door 2 is closed, and perform data fitting based on the gap and the closing force to obtain a fitting curve, so as to determine the models of the sealing strip 3 and the decorative cover 4 that match the door 2 of the corresponding vehicle type according to the fitting curve and the parameter standard of the door 2 of the corresponding vehicle type.

[0073] Further, the door test device further includes a test bracket 5. A test body 6 is provided on the test bracket 5. An opening 60 is provided on the test body 6. The door profile 1 is provided along the edge of the opening 60. The door 2 is hinged on the test body 6. A plurality of rollers 50 are provided at intervals at the bottom of the test bracket 5. A braking member 51 is provided on each roller 50. At least one support assembly is provided on each side of one pair of opposite sides of the test bracket 5. Each support assembly is inclined, with one end connected to the test bracket 5 and the other end for being provided on a platform below.

[0074] Further, the sealing strip 3 is snap-connected to the door profile 1, and the decorative cover 4 is snap-connected or connected by threads to the door 2.

[0075] Among them, the structure of the door test device and the cooperation mode between the structures correspond to the above method, and will not be elaborated one by one here.

[0076] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0077] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0078] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for determining the closing parameters of a box door, characterized in that, The steps include: Construct a door test device; Freely combine different models of sealing strips (3) and decorative covers (4), and conduct a door closing test on the door test device to respectively obtain the gap between the decorative cover (4) of the corresponding model and the door surface (1) of the door test device when the door (2) is closed, and the closing force when the door (2) is closed; Perform data fitting based on the gap and closing force to obtain a fitting curve, and respectively determine the models of the sealing strip (3) and the decorative cover (4) that match the door (2) of the corresponding vehicle model according to the fitting curve and the parameter standard of the door (2) of the corresponding vehicle model; Among them, the step of freely combining different models of sealing strips (3) and decorative covers (4) and then conducting a door closing test includes: Install one of the models of the sealing strip (3) on the body surface of the door test device, and install one of the models of the decorative cover (4) on the inner side of the door (2) of the door test device; Conduct a door closing test to obtain the gap between the decorative cover (4) and the body surface of the door test device when the door (2) is closed, and the closing force when the door (2) is closed; Replace the sealing strip (3), and respectively obtain the gap between the decorative cover (4) of the corresponding model and the body surface of the door test device when the decorative cover (4) is combined with the remaining different models of the sealing strip (3) for the door closing test, and the closing force when the door (2) is closed; Replace the decorative cover (4), and repeat the above steps until the gaps between the decorative cover (4) of all different models and the body surface of the door test device when the decorative cover (4) is combined with all different models of the sealing strip (3) for the door closing test are respectively obtained, and the closing force when the door (2) is closed; Among them, the step of conducting a door closing test to obtain the gap between the decorative cover (4) of the corresponding model and the door surface (1) of the door test device when the door (2) is closed includes: Before installing the sealing strip (3) of the corresponding model, perform initial calibration on the door (2) so that the surface difference fluctuation between the door (2) and the corresponding side of the door test device is not greater than 20% of the current initial average surface difference; Install the decorative cover (4) of the corresponding model, and obtain the initial average surface difference between the calibrated door (2) and the corresponding side of the door test device, and the initial distance between the decorative cover (4) and the door surface (1) of the door test device; Install the sealing strip (3) of the corresponding model, obtain the actual average surface difference between the current door (2) and the corresponding side of the door test device, and calculate the gap between the current decorative cover (4) and the door surface (1) of the door test device according to the initial average surface difference, the initial distance, and the actual average surface difference.

2. The method for determining the closing parameters of a box door according to claim 1, characterized in that, The step of freely combining different models of sealing strips (3) and decorative covers (4) and then conducting a door closing test on the door test device includes: Install one type of the sealing strip (3) on the body surface of the cabinet door test device, and install one type of the decorative cover (4) on the inner side of the cabinet door (2) of the cabinet door test device; Conduct a cabinet door closing test to obtain the gap between the decorative cover (4) and the body surface of the cabinet door test device when the cabinet door (2) is closed, and the closing force when the cabinet door (2) is closed; Replace the decorative cover (4), and respectively obtain the gap between the decorative cover (4) and the body surface of the cabinet door test device when conducting the cabinet door closing test with the corresponding type of sealing strip (3) and the remaining different types of decorative covers (4), and the closing force when the cabinet door (2) is closed; Replace the sealing strip (3), and repeat the above steps until the gaps between the decorative cover (4) and the body surface of the cabinet door test device when conducting the cabinet door closing test with all combinations of all different types of sealing strips (3) and all different types of decorative covers (4) are obtained, and the closing force when the cabinet door (2) is closed.

3. The method for determining the closing parameters of a box door according to claim 1, characterized in that: The types of the sealing strip (3) include stiffness, and the types of the decorative cover (4) include thickness.

4. The method for determining the closing parameters of a box door according to claim 1, characterized in that, The steps of conducting a cabinet door closing test to obtain the closing force when the cabinet door (2) is closed include: Determine at least one measurement point on each side of the outer surface of the cabinet door (2); Obtain the force value data of each measurement point when the cabinet door (2) is closed; Determine the maximum force value of each force value data, and calculate the closing force when the cabinet door (2) is closed based on all the maximum force values.

5. The method for determining the closing parameters of a box door according to claim 1, characterized in that: Before conducting the first cabinet door closing test for the corresponding vehicle model, fix the cabinet door test device to the platform located below it, and counterweight the cabinet door test device with the corresponding weight.

6. A box door test device for implementing the method according to any one of claims 1 to 5, characterized in that, It includes: A cabinet door surface (1), with a cabinet door (2) provided on one side of the cabinet door surface (1); Multiple sealing strips (3) and decorative covers (4) with different types, one of the sealing strips (3) is detachably provided on the cabinet door surface (1), and one of the decorative covers (4) is detachably provided on the inner side surface of the cabinet door (2); A monitoring and analysis unit, which is used to obtain the gap between the corresponding type of decorative cover (4) and the cabinet door surface (1) when the cabinet door is closed, and the closing force when the cabinet door (2) is closed, and perform data fitting on the gap and the closing force to obtain a fitting curve, so as to respectively determine the types of the sealing strip (3) and the decorative cover (4) that match the cabinet door (2) of the corresponding vehicle model according to the fitting curve and the parameter standard of the cabinet door (2) of the corresponding vehicle model.

7. The box door test device according to claim 6, characterized in that: The cabinet door test device further includes a test bracket (5), a test body (6) is provided on the test bracket (5), an opening (60) is provided on the test body (6), the cabinet door surface (1) is provided along the edge of the opening (60), and the cabinet door (2) is hinged on the test body (6); A plurality of rollers (50) are provided at intervals at the bottom of the test bracket (5), and a braking member (51) is provided on each roller (50); On each side of one pair of opposite sides of the test bracket (5), at least one support component is provided, and each of the support components is inclined, with one end connected to the test bracket (5) and the other end for being arranged on the platform below.

8. A box door test device according to claim 6, characterized in that: The sealing strip (3) is snap-connected to the door panel profile (1), and the decorative cover (4) is snap-connected to the door (2) or connected by threads.

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