Rigidity measuring device

Abstract

The utility model discloses a rigidity measuring device, and relates to the technical field of automobile manufacturing. The rigidity measuring device is used for measuring the rigidity of the automobile door, the rigidity measuring device comprises an air pressure regulator and a displacement measurer, the air pressure regulator is used for regulating the air pressure in the automobile so as to form a preset air pressure difference with the outside of the automobile, and the displacement measurer is used for measuring the displacement of the automobile door to be measured under the preset air pressure difference. According to the invention, the rigidity of the to-be-tested automobile door of the automobile can be determined through displacement.

Description

Technical Field

[0001] The present application relates to the field of automobile manufacturing technology, and in particular to a stiffness measuring device. Background Art

[0002] The body of a car is an important component, and the door, as a relatively independent assembly within the body, plays a unique role. During the development and design of new models, it is necessary to determine the door stiffness. Utility Model Content

[0003] One embodiment of the present application provides a stiffness measuring device, which is used to measure the stiffness of a car door. The stiffness measuring device includes an air pressure regulator and a displacement measuring device. The air pressure regulator is used to adjust the air pressure inside the car to form a preset air pressure difference with the outside of the car. The displacement measuring device is used to measure the displacement of the car door to be tested under the preset air pressure difference.

[0004] In a further embodiment, the air pressure regulator includes an air source and a barometer, wherein the air source is used to communicate with the interior of the car to regulate the air pressure in the car, and the barometer is used to measure the air pressure in the car.

[0005] A further embodiment is that the air pressure regulator also includes an air supply pipe, a pressure pipe and a sealing plate, the air supply pipe and the pressure pipe are both connected to the sealing plate, the air supply pipe is connected to the air source, the pressure pipe is connected to the barometer, and the sealing plate is used to be installed at the position where the glass is installed on the door of the car. When the sealing plate is installed on the door of the car, the air supply pipe and the pressure pipe are both connected to the interior of the car.

[0006] In a further embodiment, the sealing plate is used to be installed at a position where glass is installed on a rear door of the automobile, and the displacement meter is used to measure the displacement of the front door of the automobile under the preset air pressure difference.

[0007] In a further embodiment, the displacement measuring device includes a fixing base and a displacement meter mounted on the fixing base, and the fixing base is used to be mounted on the car.

[0008] In a further embodiment, the displacement meter is used to measure the displacement of the B-pillar section of the vehicle door to be measured and / or the displacement of the A-pillar section of the vehicle door to be measured.

[0009] In a further embodiment, the displacement meter is used to measure the displacement of the midpoint of the B-pillar section of the vehicle door to be measured and / or the displacement of the midpoint of the A-pillar section of the vehicle door to be measured.

[0010] In a further embodiment, the air pressure regulator is used to adjust the preset air pressure difference to 620Pa, 366Pa, 150Pa, 32Pa or -35Pa.

[0011] A further embodiment is that the stiffness measuring device also includes a controller, which is electrically connected to the air pressure regulator and the displacement meter, and is used to control the air pressure regulator to adjust the preset air pressure difference, and the controller is used to receive the displacement measurement result of the displacement meter.

[0012] In a further embodiment, the controller controls the displacement measuring device to perform measurement in response to the pressure difference between the inside and outside of the automobile being maintained at the preset pressure difference.

[0013] A further embodiment is that the controller generates an insufficient strength instruction in response to the displacement measurement being greater than 2 mm.

[0014] In a further embodiment, the controller controls the air pressure regulator in response to the deflection angle being -20° to adjust the preset air pressure difference to 620 Pa;

[0015] Alternatively, the controller controls the air pressure regulator in response to the deflection angle being -10° to adjust the preset air pressure difference to 366 Pa;

[0016] Alternatively, in response to the deflection angle being 0°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 150 Pa;

[0017] Or, in response to the deflection angle being 10°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 32 Pa;

[0018] Alternatively, in response to the deflection angle being 20°, the controller controls the air pressure regulator to adjust the preset air pressure difference to -35 Pa.

[0019] The present application adopts the above-mentioned technical solution, and the present application can measure the stiffness of a car door. The air pressure inside the car is adjusted by an air pressure regulator to form a preset air pressure difference with the outside of the car. The displacement meter is used to measure the displacement of the car door to be tested under the preset air pressure difference, and the stiffness of the car door to be tested is determined through the displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a stiffness measuring device in some embodiments of the present application during the process of measuring the stiffness of a vehicle door;

[0021] Figure 2 This is a schematic diagram of different wind speeds and deflection angles during automobile wind tunnel testing in some embodiments of the present application;

[0022] Figure 3 Schematic diagram of the framework of the stiffness measurement device in some embodiments of the present application. DETAILED DESCRIPTION

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this application. For those of ordinary skill in the art, without inventive work, this application can also be applied to other similar scenarios based on these drawings. Unless otherwise apparent from the language context or otherwise specified, the same reference numerals in the figures represent the same structure or operation.

[0024] This application describes a stiffness measuring device that can be used to measure the stiffness of automobile doors so as to improve the quality of automobile doors during the development, design, and production of new vehicle models.

[0025] See also Figure 1 , Figure 1 FIG1 is a schematic diagram of the structure of a stiffness measurement device during the process of measuring vehicle door stiffness in some embodiments of the present application. Vehicle 100 may include doors such as front door 101 and rear door 102. Of course, based on the model of vehicle 100, the doors may not be limited to front door 101 and rear door 102.

[0026] The front door 101 may be equipped with a glass 1011 and may include a door A-pillar section 1012 and a door B-pillar section 1013. The door A-pillar section 1012 and the door B-pillar section 1013 may be arranged around the glass 1011 to limit the glass 1011 and may also be movably connected to the glass 1011 so that the glass 1011 can be raised and lowered.

[0027] The rear door 102 may be equipped with glass 1021 and may include a door B-pillar section 1022 and a door C-pillar section 1023. The door B-pillar section 1022 and the door C-pillar section 1023 may be arranged around the glass 1021 to limit the glass 1021 and may also be movably connected to the glass 1021 so that the glass 1021 can be raised and lowered.

[0028] It can be understood that the A-pillar section of the car door refers to the part of the car door that can be set up and matched with the A-pillar of the car, the B-pillar section of the car door refers to the part of the car door that can be set up and matched with the B-pillar of the car, or refers to the part of the car door that can function as a B-pillar when the car 100 does not have a B-pillar, and the C-pillar section of the car door refers to the part of the car door that can be set up and matched with the C-pillar of the car.

[0029] See also Figure 1The stiffness measurement device 200 may include an air pressure regulator 10 and a displacement meter 20. The air pressure regulator 10 may be used to adjust the air pressure inside the vehicle 100, thereby adjusting the air pressure difference with the air pressure outside the vehicle 100, so that the air pressure difference reaches a preset air pressure difference. The displacement meter 20 may be used to measure the displacement of a door under test of the vehicle 100 under a preset air pressure difference, thereby determining the stiffness of the door under test of the vehicle 100 based on the displacement. In some scenarios, the door under test may be the front door 101, and the displacement meter 20 may be used to measure the displacement of the front door 101 under a preset air pressure difference, thereby determining the stiffness of the front door 101 of the vehicle 100 based on the displacement. In some scenarios, the door under test may be the rear door 102, and the displacement meter 20 may be used to measure the displacement of the rear door 102 under a preset air pressure difference, thereby determining the stiffness of the rear door 102 of the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of a portion of a door under test on the vehicle 100 under a preset air pressure differential, thereby determining the stiffness of the door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of a portion surrounding the glass of the door under test on the vehicle 100 under a preset air pressure differential, thereby determining the stiffness of the door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of a portion of the A-pillar section of the door under a preset air pressure differential, thereby determining the stiffness of the door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of the midpoint of the A-pillar section of the door under a preset air pressure differential, thereby determining the stiffness of the door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of a portion of the B-pillar section of the vehicle 100 door under a preset air pressure differential, thereby determining the stiffness of the vehicle door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of the midpoint of the B-pillar section of the vehicle 100 door under a preset air pressure differential, thereby determining the stiffness of the vehicle door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of a portion of the C-pillar section of the vehicle 100 door under a preset air pressure differential, thereby determining the stiffness of the vehicle door under test on the vehicle 100 based on the displacement. In some scenarios, the displacement measuring device 20 can be used to measure the displacement of the midpoint of the C-pillar section of the vehicle 100 door under a preset air pressure differential, thereby determining the stiffness of the vehicle door under test on the vehicle 100 based on the displacement.

[0030] See also Figure 1The air pressure regulator 10 may include a main body 11, an air supply pipe 12, a pressure pipe 13, and a sealing plate 14. The main body 11 may be connected to the air supply pipe 12 and the pressure pipe 13. The air supply pipe 12 and the pressure pipe 13 may both be connected to the sealing plate 14. The sealing plate 14 may be installed at the location where the glass of the door of the automobile 100 is installed. When the sealing plate 14 is installed on the door of the automobile 100, the air supply pipe 12 and the pressure pipe 13 may both be connected to the interior of the automobile 100. Furthermore, the main body 11 may deliver air to the interior of the automobile 100 through the air supply pipe 12 to increase the air pressure inside the automobile 100, and may obtain the current air pressure inside the automobile 100 through the pressure pipe 13, and further adjust various parameters of the delivered air based on the current air pressure to achieve adjustment of the preset air pressure difference. In some scenarios, the sealing plate 14 can be installed at the location where the glass 1011 is installed on the front door 101 of the automobile 100. When the sealing plate 14 is installed on the front door 101 of the automobile 100, the air supply duct 12 and the pressure pipe 13 can both communicate with the interior of the automobile 100. In some scenarios, the sealing plate 14 can be installed at the location where the glass 1021 is installed on the rear door 102 of the automobile 100. When the sealing plate 14 is installed on the rear door 102 of the automobile 100, the air supply duct 12 and the pressure pipe 13 can both communicate with the interior of the automobile 100.

[0031] See also Figure 1 The main body 11 may include an air source 111, which may be connected to the air supply pipe 12. The air source 111 may communicate with the interior of the automobile 100 through the air supply pipe 12 to adjust the air pressure within the automobile 100. The air source 111 may be an air pump, a fan, a compressor, or other equipment that can supply air to the interior of the automobile 100, and may be any equipment known in the art that can supply air to the interior of the automobile 100.

[0032] In some scenarios, the air source 111 may be connected to the interior of the automobile 100 in other ways, that is, the way in which the air source 111 is connected to the interior of the automobile 100 may not be limited to the air supply duct 12 .

[0033] See also Figure 1 The main body 11 may include a barometer 112. The barometer 112 is connected to the pressure pipe 13, and the barometer 112 can measure the air pressure inside the vehicle 100 through the pressure pipe 13. In some embodiments, the barometer 112 can also be connected to the interior of the vehicle 100 through other means, that is, the way in which the barometer 112 is connected to the interior of the vehicle 100 is not limited to the air supply pipe 12.

[0034] In some embodiments, the barometer 112 may be an electronic barometer, or a mechanical barometer, or even a device known in the art that can measure air pressure.

[0035] In some scenarios, the barometer 112 and the air source 111 may be integrated. In some scenarios, the barometer 112 and the air source 111 may be two separate entities. In some scenarios, the barometer 112 may also be placed directly inside the vehicle 100. In some scenarios, the barometer 112 may also measure the air pressure outside the vehicle 100 to determine the pressure difference between the air pressure outside the vehicle 100 and the air pressure inside the vehicle 100.

[0036] The sealing plate 14 can be installed in place of glass in the vehicle door if the vehicle door is not equipped with glass, thereby blocking the air vent created by the missing glass in the vehicle 100. When the sealing plate 14 is installed on the vehicle door of the vehicle 100, both the air supply duct 12 and the pressure pipe 13 can be connected to the interior of the vehicle. In some scenarios, the front door 101 is not equipped with glass 1011 or the glass 1011 is lowered, forming an air vent in the front door 101 that connects to the interior of the vehicle 100. The sealing plate 14 can be sealed at the air vent and connected to the front door 101. In some scenarios, the rear door 102 is not equipped with glass 1021 or the glass 1021 is lowered, forming an air vent in the rear door 102 that connects to the interior of the vehicle 100. The sealing plate 14 can be sealed at the air vent and connected to the rear door 102.

[0037] It is understandable that in order to achieve communication between the main body 11 and the interior of the automobile 100, it is not limited to the sealing plate 14, and other methods can also be used. In some embodiments, the air supply duct 12 may not be connected to the interior of the automobile 100 through the sealing plate 14, but may be directly connected to the interior of the automobile 100, or even may be connected by other methods, which will not be elaborated. In some embodiments, the pressure pipe 13 may not be connected to the interior of the automobile 100 through the sealing plate 14, but may be directly connected to the interior of the automobile 100, or even may be connected by other methods, which will not be elaborated. In some embodiments, the glass may not be limited to the glass on the car door, but may also be glass on the car 100 other than the car door, as long as a vent can be formed. In some embodiments, the vent can be formed by opening on the glass. For example, an opening is formed on the glass 1011 to form a vent. For example, an opening is formed on the glass 1021 to form a vent. In some embodiments, the vent may be formed by other structures on the automobile 100 and may be blocked by the sealing plate 14 or other structures. The vent may also be directly connected to the barometer 112 and the pressure tube 13 .

[0038] In some embodiments, the sealing plate 14 can replace the glass 1011 if the front door 101 is not equipped with the glass 1011, and can be installed in the position where the glass 1011 is installed on the front door 101 of the automobile 100. When the sealing plate 14 is installed on the front door 101 of the automobile 100, the air vent is blocked. In some embodiments, the sealing plate 14 can replace the glass 1021 if the rear door 102 is not equipped with the glass 1021, and can be installed in the position where the glass 1021 is installed on the rear door 102. When the sealing plate 14 is installed on the rear door 102 of the automobile 100, the air vent is blocked.

[0039] The displacement measuring device 20 may be mounted around the vehicle 100 rather than on the vehicle 100 itself. For example, the displacement measuring device 20 may be mounted on the ground or on another structure placed on the ground, which will not be described in detail. Of course, the displacement measuring device 20 may also be mounted directly or indirectly on the vehicle 100. For example, the displacement measuring device 20 may be mounted directly or indirectly on the front door 101, the rear door 102, or other vehicle body structure. In some embodiments, the displacement measuring device 20 may be mounted directly or indirectly on the vehicle roof.

[0040] See also Figure 1 The displacement measuring device 20 may include a fixing base 21 and a displacement meter 22 mounted on the fixing base 21. The displacement meter 22 is a main body of the displacement measuring device 20 that performs displacement measurement.

[0041] The fixing base 21 can be connected to the vehicle 100 by welding, plugging, magnetism, bonding, snap-on connection, or screw connection, etc., which are well known in the art. In some embodiments, the fixing base 21 can be provided with a multi-rotational substructure to connect with the displacement meter 22, so as to realize the rotation of the displacement meter 22 at different angles and the movement of different positions, so as to better adjust the position of the displacement meter 22.

[0042] The displacement meter 22 can be a mechanical displacement meter, a resistive displacement meter, an inductive displacement meter, or a laser displacement meter, or any other displacement meter known in the art. It can be connected to the mounting base 21 by any connection method known in the art, such as welding, plugging, magnetism, bonding, snap-fitting, or screwing. In some embodiments, the displacement meter 22 can be connected to a multi-rotational substructure of the mounting base 21 to enable real-time position adjustment. In some embodiments, the displacement meter 22 can be a micrometer.

[0043] See also Figure 1When the car 100 is driving, the pressure around it is lower than the pressure inside it. This causes the doors, such as the front door 101 and the rear door 102, to be squeezed by the pressure difference between the inside and outside of the car 100. Consequently, the door strength is closely related to safe driving and wind noise. This application uses a "positive pressure method" to adjust the pressure inside the car 100 to simulate the pressure difference in a driving scenario. This avoids the need for the car 100 to actually drive, allowing the stiffness of the door to be tested to be determined through displacement. This method serves as a basis for the development, design, and production of new models, ensuring that the cars 100 shipped and / or sold can withstand the test of actual driving.

[0044] In some embodiments, the stiffness measurement device 200 can also simulate driving scenarios of the car 100 in different environments. In some embodiments, the stiffness measurement device 200 can be used to simulate wind tunnel testing of the car 100.

[0045] See also Figure 2 , Figure 2 Schematic diagram of different wind speeds and deflection angles during wind tunnel testing of the automobile 100 in some embodiments of the present application. When the automobile 100 faces the wind at an angle α (clockwise is positive, counterclockwise is negative), the wind speed (expressed as airflow) can be decomposed into two directional component speeds, from Figure 2 It can be seen that when α is a negative angle, the main driver ( Figure 2 The left side in the middle) is in the leeward area, and the first officer ( Figure 2 The right side in the figure) is the windward area, and there is a huge airflow separation in the leeward area, which is in a negative pressure area. It will generate a drag force on the door on the main driver's side. Therefore, the pressure change in the leeward area is greater, and the wind noise will be worse. Therefore, for the door on the main driver's side, the negative angle has a greater impact on the wind noise of the entire vehicle, that is, when the door on the main driver's side is in the leeward area, the air pressure difference between the inside and outside of the car is greater on the main driver's side door. When the main driver is in the positive wind area, it is equivalent to the side wind coming from the main driver, and the wind directly presses on the glass on the main driver's side. Therefore, it is possible that the pressure outside the car is greater than the pressure inside the car at the door on the main driver's side.

[0046] In some embodiments, based on a wind tunnel test of the automobile 100 , when the automobile 100 is traveling at 120 km / h, taking the door on the main driver's side as an example, the following table can be obtained:

[0047]

[0048] Furthermore, in some embodiments, the preset pressure difference in the above embodiment can be 620Pa, 366Pa, 150Pa, 32Pa or -35Pa, so that the stiffness measurement device 200 can simulate the wind tunnel test of the car 100. It can be understood that the data in the above table can also be used for testing Figure 1Any front door 101 of the car 100 can also be used for testing Figure 1 Of course, the above-mentioned preset air pressure difference may not be limited by the above table and may be determined based on the simulated driving environment of the car 100.

[0049] In some embodiments, the method for measuring the door stiffness using the stiffness measuring device 200 may be as follows:

[0050] Here with Figure 1 Taking the stiffness measurement of the front door 101 as an example, the air pressure regulator 10 is first installed on the rear door 102. This supplies air into the vehicle 100, increasing the pressure inside the vehicle 100 and maintaining the pressure differential between the inside and outside of the vehicle 100 at a predetermined level. The air pressure inside the vehicle 100 compresses the glass 1011, which in turn compresses the glass run channel, which in turn drives the front door 101 outward.

[0051] During dynamic driving, the pressure inside vehicle 100 is uniform. Consequently, the simulation results of stiffness measurement device 200 conform to the objective laws of pressure distribution inside vehicle 100. Furthermore, the dynamic deformation mechanisms of glass 1011, glass run channel, and front door 101 sheet metal are consistent. Displacement meter 20 measures the displacement of the midpoints between the B-pillar and A-pillar sections of the door, as these are typically the points where the maximum door displacement occurs.

[0052] After the pressure difference between the inside and outside of the automobile 100 is maintained at the preset pressure difference for 30 seconds, the displacement value of the midpoint between the door B-pillar section and the door A-pillar section is read.

[0053] As will be appreciated, the door opening seal is a key component in achieving a sealing effect and mitigating wind noise. Therefore, the door's rigidity should be sufficient to prevent the seal from failing. Furthermore, the displacement measurement result of the displacement meter 20 should not exceed the minimum effective compression of the door opening seal, ensuring that the door opening seal remains effective at the minimum effective compression.

[0054] In some embodiments, the actual compression of the door opening sealing strip is 1.5-4.5 mm, and thus the displacement measuring device 20 should not exceed 1.5 mm. In some embodiments, when the compression of the door opening sealing strip is 3 mm, combined with the industry's door installation tolerance of ±1.5, the actual compression of the sealing strip is 1.5-4.5 mm. Therefore, the minimum effective compression of the door opening sealing strip can be limited to 2 mm, and thus the displacement measuring device 20 should not exceed 2 mm.

[0055] It is understood that when the measurement result of the displacement meter 20 exceeds the minimum effective compression of the door opening seal, it indicates that the vehicle door rigidity is insufficient and requires further redesign and / or reinforcement. For example, if the displacement of the vehicle door does not exceed the minimum effective compression of the door opening seal, the vehicle door rigidity is considered to meet the standard and the test is concluded. If the displacement of the vehicle door exceeds the minimum effective compression of the door opening seal, the vehicle door needs to be redesigned and / or reinforced, such as by welding structural components or adding structural adhesive, and the test is repeated until the displacement of the vehicle door is equal to or less than the minimum effective compression of the door opening seal, at which point the test is concluded.

[0056] See also Figure 3 , Figure 3 Figure 2 is a schematic diagram of a stiffness measurement device 200 in some embodiments of the present application. The stiffness measurement device 200 may include the gas pressure regulator 10 and displacement meter 20 described in the above embodiments, as well as a controller 30 and a display device 40. The controller 30 may be electrically connected to the gas pressure regulator 10, displacement meter 20, and display device 40, respectively.

[0057] The controller 30 can be used to control the air pressure regulator 10 to adjust a preset air pressure differential. In some embodiments, the controller 30 can be connected to the air source 111 and the barometer 112 to control the operation of the air source 111 to deliver air into the vehicle 100 and receive pressure measurements from the barometer 112. The controller 30 can further control the operation of the air source 111 based on the pressure measurement results of the barometer 112 to deliver air into the vehicle 100, so that the air pressure differential between the inside and outside of the vehicle 100 approaches the preset air pressure differential, and can even reach the preset air pressure differential.

[0058] The controller 30 can be used to control the displacement measuring device 20, such as the displacement meter 22, to perform displacement measurement and receive the displacement measurement result of the displacement measuring device 20, such as the displacement meter 22. Of course, the controller 30 can also be used only to receive the displacement measurement result of the displacement measuring device 20, such as the displacement meter 22.

[0059] In some embodiments, the controller 30 may control the displacement measuring device 20 , such as the displacement meter 22 , to perform measurement in response to the pressure difference between the inside and outside of the automobile 100 being maintained at a preset pressure difference.

[0060] The controller 30 may generate an insufficient strength instruction in response to the displacement measurement result being greater than the minimum effective compression amount of the door opening sealing strip, such as 2 mm, so that the display device 40 displays relevant information based on the insufficient strength instruction.

[0061] The controller 30 may generate a sufficient strength instruction in response to the displacement measurement result not exceeding the minimum effective compression amount of the door opening sealing strip, such as 2 mm, so that the display device 40 displays relevant information based on the sufficient strength instruction.

[0062] The display device 40 may display information by playing sound through a speaker to prompt relevant information, or by using a display panel to prompt relevant information.

[0063] In some embodiments, the controller controls the air pressure regulator to adjust the preset air pressure difference to 620 Pa in response to a deflection angle of -20°. In some embodiments, the controller controls the air pressure regulator to adjust the preset air pressure difference to 366 Pa in response to a deflection angle of -10°. In some embodiments, the controller controls the air pressure regulator to adjust the preset air pressure difference to 150 Pa in response to a deflection angle of 0°. In some embodiments, the controller controls the air pressure regulator to adjust the preset air pressure difference to 32 Pa in response to a deflection angle of 10°. In some embodiments, the controller controls the air pressure regulator to adjust the preset air pressure difference to -35 Pa in response to a deflection angle of 20°. It can be understood that the deflection angle can be input by the user, the stiffness measuring device 200 can form a deflection angle instruction based on the user input, the controller responds to the deflection angle instruction, and the preset air pressure difference can be stored in the stiffness measuring device 200 and can be called by the controller. Of course, the operation of inputting the deflection angle can be omitted, and the user can directly input a preset air pressure difference. The stiffness measurement device 200 can generate an air pressure difference command based on the user input, and the controller can respond to the air pressure difference command. That is, in some embodiments, the controller controls the air pressure regulator to adjust the air pressure difference between the inside and outside of the vehicle 100 to 620 Pa in response to a preset air pressure difference of 620 Pa. In some embodiments, the controller controls the air pressure regulator to adjust the air pressure difference between the inside and outside of the vehicle 100 to 366 Pa in response to a preset air pressure difference of 366 Pa. In some embodiments, the controller controls the air pressure regulator to adjust the air pressure difference between the inside and outside of the vehicle 100 to 150 Pa in response to a preset air pressure difference of 32 Pa. In some embodiments, the controller controls the air pressure regulator to adjust the air pressure difference between the inside and outside of the vehicle 100 to 32 Pa in response to a preset air pressure difference of -35 Pa.

[0064] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0065] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this application does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0066] In addition, unless expressly stated in the claims, the order of processing elements and sequences, the use of alphanumeric characters, or the use of other names in this application are not intended to limit the order of the processes and methods of this application. Although the above disclosure discusses some embodiments that are currently considered useful through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0067] Similarly, it should be noted that, in order to simplify the description of the present disclosure and thus facilitate understanding of one or more embodiments, the foregoing descriptions of the embodiments of the present disclosure sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of the present disclosure requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of a single embodiment disclosed above.

[0068] In some embodiments, numbers are used to describe the number of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in this application are all approximate values, which may change according to the required characteristics of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0069] Each patent, patent application, patent application disclosure, and other materials, such as articles, books, applications, publications, and documents, cited in this application is hereby incorporated by reference in its entirety. This includes any application history that is inconsistent with or conflicts with the content of this application, as well as any document (currently or subsequently attached to this application) that limits the broadest scope of the claims of this application. It should be noted that if the descriptions, definitions, and / or terminology used in the accompanying materials of this application are inconsistent with or conflict with the content of this application, the descriptions, definitions, and / or terminology used in this application will prevail.

[0070] Finally, it should be understood that the embodiments in this application are intended only to illustrate the principles of the embodiments of this application. Other variations may also fall within the scope of this application. Therefore, as examples and not limitations, alternative configurations of the embodiments of this application may be considered consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly introduced and described in this application.

Claims

1. A stiffness measuring device, characterized in that: The stiffness measuring device is used to measure the stiffness of a car door. The stiffness measuring device includes an air pressure regulator and a displacement measuring device. The air pressure regulator is used to adjust the air pressure inside the car to form a preset air pressure difference with the outside of the car. The displacement measuring device is used to measure the displacement of the car door to be tested under the preset air pressure difference.

2. The stiffness measuring device according to claim 1, characterized in that: The air pressure regulator includes an air source and a barometer. The air source is used to communicate with the interior of the car to regulate the air pressure in the car, and the barometer is used to measure the air pressure in the car.

3. The stiffness measuring device according to claim 2, characterized in that: The air pressure regulator also includes an air supply pipe, a pressure pipe and a sealing plate. The air supply pipe and the pressure pipe are both connected to the sealing plate. The air supply pipe is connected to the air source, and the pressure pipe is connected to the barometer. The sealing plate is used to be installed at the position where the glass is installed on the door of the car. When the sealing plate is installed on the door of the car, the air supply pipe and the pressure pipe are both connected to the interior of the car.

4. The stiffness measuring device according to claim 3, characterized in that: The sealing plate is used to be installed at the position where the glass is installed on the rear door of the car, and the displacement meter is used to measure the displacement of the front door of the car under the preset air pressure difference.

5. The stiffness measuring device according to any one of claims 1 to 4, characterized in that: The displacement measuring device includes a fixing seat and a displacement meter installed on the fixing seat, and the fixing seat is used to be installed on the car.

6. The stiffness measuring device according to claim 5, characterized in that: The displacement meter is used to measure the displacement of the B-pillar section of the vehicle door to be measured and / or the displacement of the A-pillar section of the vehicle door to be measured.

7. The stiffness measuring device according to claim 5, characterized in that: The displacement meter is used to measure the displacement of the midpoint of the B-pillar section of the vehicle door to be measured and / or the displacement of the midpoint of the A-pillar section of the vehicle door to be measured.

8. The stiffness measuring device according to any one of claims 1 to 4, characterized in that: The air pressure regulator is used to adjust the preset air pressure difference to 620Pa, 366Pa, 150Pa, 32Pa or -35Pa.

9. The stiffness measuring device according to claim 1, characterized in that: The stiffness measuring device further includes a controller electrically connected to the air pressure regulator and the displacement measuring device. The controller is used to control the air pressure regulator to adjust the preset air pressure difference and receive a displacement measurement result from the displacement measuring device.

10. The stiffness measuring device according to claim 9, characterized in that: In response to the pressure difference between the inside and outside of the vehicle being maintained at the preset pressure difference, the controller controls the displacement measuring device to perform measurement.

11. The stiffness measuring device according to claim 9, characterized in that: The controller generates an insufficient strength instruction in response to the displacement measurement being greater than 2 mm.

12. The stiffness measuring device according to claim 9, characterized in that: In response to the deflection angle being -20°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 620 Pa; Alternatively, in response to the deflection angle being -10°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 366 Pa; Alternatively, in response to the deflection angle being 0°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 150 Pa; Or, in response to the deflection angle being 10°, the controller controls the air pressure regulator to adjust the preset air pressure difference to 32 Pa; Alternatively, in response to the deflection angle being 20°, the controller controls the air pressure regulator to adjust the preset air pressure difference to -35 Pa.

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