Measuring device

Abstract

The utility model relates to a measuring device, which is used for measuring the sinking distance of a front bumper during vehicle braking and comprises a connecting part and a first group of measuring scales which are connected with each other, the connecting part is used for being fixedly connected with the front bumper, the first group of measuring scales extend towards the ground, and the first group of measuring scales comprise a plurality of first measuring scales with different lengths; the multiple first measuring scales are arranged at intervals in the length direction of the front bumper, and when the front bumper sinks, the first measuring scales, making contact with the ground, in the multiple first measuring scales with different lengths can be collided and broken. When a vehicle is braked, the front bumper sinks and moves due to the inertia effect, the connecting part and the first group of measuring scales are driven to move towards the ground, the plurality of first measuring scales collide with the ground according to the length sequence and are broken, and the sinking distance of the front bumper can be determined according to the broken and unbroken first measuring scales. The data is beneficial for adjusting and designing the height of the leg to be consistent with the height of the front bumper, so that the result accuracy in a vehicle collision test is improved.

Description

Technical Field

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

[0002] Vehicles are required to undergo pedestrian safety protection testing before leaving the factory and only qualified vehicles that meet the relevant tests can be sold on the market. During the test, the bionic leg is required to strike the front of the test vehicle at a certain speed (40km / h). The vehicle's compliance is determined by analyzing the sensors on the leg. During the collision test, the height of the leg and the front bumper must be consistent. However, when the vehicle suddenly brakes at high speed, the front of the vehicle will sink due to inertia, causing the front bumper to sink. This will cause the height of the leg and the front bumper to misalign, leading to test errors. Therefore, it is particularly important to know how to determine the sinking distance of the front bumper during braking. Utility Model Content

[0003] The purpose of this application is to at least solve the technical problem of test errors caused by the height misalignment between the legs and the front bumper due to the downward movement of the front bumper during braking in existing vehicle testing. This purpose is achieved through the following technical solutions:

[0004] The present application provides a measuring device for measuring the sinking distance of a front bumper during vehicle braking. The measuring device includes a connecting portion and a first set of measuring scales. The connecting portion is used to be fixedly connected to the front bumper. The first set of measuring scales is fixedly connected to the connecting portion, and the first set of measuring scales is extended toward the ground. The first set of measuring scales includes a plurality of first measuring scales of different lengths. The plurality of first measuring scales of different lengths are spaced apart along the length direction of the front bumper. When the front bumper sinks, the first measuring scales of the plurality of first measuring scales of different lengths that are in contact with the ground may collide and break.

[0005] In the measuring device of the present application, during testing, the connecting portion is fixed to the front bumper of the vehicle. When the vehicle brakes while traveling at high speed, the front bumper sinks and moves due to inertia, that is, the front bumper moves downward toward the ground, driving the first set of measuring rulers on the connecting portion to move toward the ground. Since the first set of measuring rulers includes multiple first measuring rulers of different lengths, the multiple first measuring rulers can be broken by contact and collision with the ground in order of length. The sinking distance of the front bumper can be determined based on the broken and unbroken first measuring rulers. Based on this data, it is helpful to adjust the height of the designed legs to make them consistent with the height of the front bumper, thereby improving the accuracy of the results in the vehicle collision test.

[0006] In some embodiments, the connecting portion is provided along the length direction of the front bumper, and a plurality of first measuring rulers of different lengths are provided at equal intervals on the connecting portion in a manner of gradually increasing or gradually decreasing lengths.

[0007] In some embodiments, the difference a between every two adjacent first measuring scales is equal.

[0008] In some embodiments, the difference a is less than or equal to 5 mm.

[0009] In some embodiments, the measuring device also includes a second set of measuring rulers fixedly connected to the connecting portion, the second set of measuring rulers extending toward the ground, the length of the second set of measuring rulers being less than the length of the first set of measuring rulers, the second set of measuring rulers including a plurality of second measuring rulers of different lengths, the plurality of first measuring rulers of different lengths and the plurality of second measuring rulers of different lengths being alternately arranged along the length direction of the front bumper.

[0010] In some embodiments, the measuring device also includes a third group of measuring rulers fixedly connected to the connecting portion, the third group of measuring rulers extending toward the ground, the length of the third group of measuring rulers being less than the length of the second group of measuring rulers, the third group of measuring rulers including a plurality of third measuring rulers of different lengths, and the plurality of first measuring rulers of different lengths, the plurality of second measuring rulers of different lengths, and the plurality of third measuring rulers of different lengths being alternately arranged in sequence along the length direction of the front bumper.

[0011] In some embodiments, the connecting portion is arranged along the length direction of the front bumper, and multiple second measuring rulers of different lengths are arranged on the connecting portion in a manner of gradually increasing or gradually decreasing length; and / or, the connecting portion is arranged along the length direction of the front bumper, and multiple third measuring rulers of different lengths are arranged on the connecting portion in a manner of gradually increasing or gradually decreasing length.

[0012] In some embodiments, the difference b between every two adjacent second measuring scales is equal; and / or the difference c between every two adjacent third measuring scales is equal.

[0013] In some embodiments, at least one of the first measuring ruler, the second measuring ruler, and the third measuring ruler has a breaking groove at one end connected to the connecting portion, and the breaking groove is connected to the connecting portion.

[0014] In some embodiments, the connecting portion is fixedly connected to the bottom of the front bumper, the first measuring ruler, the second measuring ruler and the third measuring ruler are arranged at the bottom of the front bumper through the connecting portion, and the breaking groove is arranged towards the front and / or rear of the vehicle.

[0015] In some embodiments, two first mounting positions are provided at both ends of the connecting portion, and the two first mounting positions are used to fix the front bumper and the two ends of the connecting portion.

[0016] In some embodiments, the connecting portion is further provided with a second mounting position, which is provided between the two first mounting positions, and the second mounting position is used to fix the front bumper and the middle area of the connecting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0018] Figure 1 This is a first-perspective axonometric diagram of a measuring device according to an embodiment of the present application;

[0019] Figure 2 A second perspective axonometric diagram of a measuring device according to an embodiment of the present application;

[0020] Figure 3 A front view of a measuring device according to an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the matching structure of the first measuring ruler and the connecting portion according to one embodiment of the present application;

[0022] Figure 5 This is a diagram showing a usage scenario of a measuring device according to an embodiment of the present application;

[0023] Figure 6 for Figure 5 Schematic diagram of the structure after the bottom of the is turned upward.

[0024] The accompanying drawings are numerals as follows:

[0025] 100. Measuring device;

[0026] 1. Connecting part; 11. First mounting position; 12. Second mounting position;

[0027] 2. First measuring ruler; 21. Fracture groove;

[0028] 3. Second measuring ruler;

[0029] 4. Third measuring ruler;

[0030] 200, vehicle; 201, front bumper;

[0031] 300. Ground. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the singular forms "a," "an," and "the" may also be intended to include the plural forms. The terms "comprise," "include," and "have" are inclusive and, therefore, specify the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0034] Although the terms first, second, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply a sequence or order when used herein. In addition, in the description of this application, unless otherwise clearly specified and limited, the terms "set" 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 directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "outer," "inner," "side," "end," "lower," "edge," "inside," "outer," "front," "back," "top," "bottom," etc. Such spatially relative terms are intended to encompass different orientations of the mechanism during use or operation in addition to the orientation depicted in the figures.

[0036] according to Figures 1 to 6 , describing an embodiment of the present utility model.

[0037] According to an embodiment of the present utility model, a measuring device is disclosed for measuring the sinking distance of a front bumper 201 when a vehicle 200 brakes. The measuring device 100 includes a connecting portion 1 and a first set of measuring scales, wherein the connecting portion 1 is used to be fixedly connected to the front bumper 201, the first set of measuring scales is fixedly connected to the connecting portion 1, and the first set of measuring scales is extended toward the ground 300. The first set of measuring scales includes a plurality of first measuring scales 2 of varying lengths, and the plurality of first measuring scales 2 are spaced apart along the length direction of the front bumper 201. When the front bumper 201 sinks, the first measuring scales 2 of the plurality of first measuring scales 2 of varying lengths that contact the ground may collide and break.

[0038] In the measuring device 100 of the present application, during testing, the connecting portion 1 is fixed to the front bumper 201 of the vehicle 200. When the vehicle 200 brakes while traveling at high speed, the front bumper 201 sinks and moves due to inertia, that is, the front bumper 201 moves downward toward the ground 300, driving the first set of measuring scales on the connecting portion 1 to move toward the ground 300. Since the first set of measuring scales includes multiple first measuring scales 2 of different lengths, the multiple first measuring scales 2 can be broken by contact, collision, and the ground 300 in order of length. The sinking distance of the front bumper 201 can be determined based on the broken and unbroken first measuring scales 2. Based on this data, it is helpful to adjust the height of the designed legs so that it is consistent with the height of the front bumper 201, thereby improving the accuracy of the results in the collision test of the vehicle 200.

[0039] It can be understood that the sinking distance of the front bumper 201 can be determined based on the broken and unbroken first measuring rulers 2. For example, when only the longest first measuring ruler 2 is in contact with the ground 300 and is broken, the distance L1 from the longest first measuring ruler 2 to the ground 300 (when the vehicle 200 is stationary) is known, and the distance L2 from the second longest first measuring ruler 2 to the ground 300 (when the vehicle 200 is stationary) is also known because the second longest first measuring ruler 2 is not in contact with the ground 300 and is not broken. Therefore, it can be concluded that the sinking distance of the front bumper 201 is greater than L1 but not greater than L2. To reduce error, the sinking distance of the front bumper 201 can be taken as half the sum of L1 and L2.

[0040] It should be noted that the distance L1 between the longest first measuring ruler 2 and the ground 300 is greater than zero, ensuring that the entire measuring device 100 maintains ground clearance and prevents damage to the measuring device 100 from contact with the ground 300 while the vehicle 200 is in motion. Only when the measuring device 100 descends with the front bumper 201 during braking will the longest first measuring ruler 2 collide with the ground 300 and break. Therefore, the range of L1 requires a specific design to ensure both normal driving of the vehicle 200 and the ability to prevent the longest first measuring ruler 2 from contacting and breaking the ground 300 during braking, ensuring measurement feasibility.

[0041] The design of L1 can be performed through experiments and continuous adjustment of the length of the longest first measuring ruler 2 , and this embodiment does not impose any specific limitation thereto.

[0042] It can be understood that the distance from the first measuring ruler 2 to the ground 300 specifically refers to the distance from the end of the first measuring ruler 2 away from the connecting portion 1 to the ground 300 .

[0043] The connecting portion 1 may be a connecting plate, the top surface of the connecting plate being fixedly attached to the bottom surface of the front bumper 201 , and the bottom surface of the connecting plate being connected and fixed to the first measuring ruler 2 .

[0044] As for the specific fixing method, the connection portion 1 and the front bumper 201 can be fixed by gluing, screwing or pinning, etc., which can be set according to specific needs and is not specifically limited in this embodiment.

[0045] like Figures 1 to 3 As shown, in some embodiments, two first mounting positions 11 are provided at both ends of the connecting portion 1 , and the two first mounting positions 11 are used to securely connect the front bumper 201 and the two ends of the connecting portion 1 .

[0046] The first mounting position 11 can facilitate the connection and fixation of both ends of the connecting portion 1 to the front bumper 201 , thereby enhancing the structural connection stability between the connecting portion 1 and the front bumper 201 and improving the force balance of the entire measuring device 100 during measurement.

[0047] like Figures 1 to 3 As shown, in some embodiments, the connecting portion 1 is further provided with a second mounting position 12 , which is provided between the two first mounting positions 11 . The second mounting position 12 is used to fix the front bumper 201 and the middle area of the connecting portion 1 .

[0048] The second mounting position 12 provided can further facilitate the fixed connection between the front bumper 201 and the middle area of the connecting part 1, enhance the connection stability between the middle area of the connecting part 1 and the front bumper 201, thereby realizing the connection and fixation of multiple parts between the connecting part 1 and the front bumper 201.

[0049] For example, the second mounting position 12 is set in the middle of the length direction of the connecting part 1, so that both ends and the middle of the connecting part 1 are fixedly connected to the front bumper 201, ensuring the connection and force stability.

[0050] During the specific connection, connection holes can be opened in the first mounting position 11 and the second mounting position 12, and bolts or pins can be passed through the connection holes to fix the measuring device 100 to the front bumper 201, thereby realizing screw connection or pin connection between the measuring device 100 and the front bumper 201; or transparent glue can be used to bond the measuring device 100 to the first mounting position 11 and the second mounting position 12 and the corresponding front bumper 201, thereby realizing bonding and fixing between the measuring device 100 and the front bumper 201, but the present invention is not limited thereto.

[0051] It is understandable that in some embodiments, the first mounting position 11 and the second mounting position 12 may not be provided. Glue or double-sided tape may be applied to the top surface of the connecting portion 1, and then the top surface of the connecting portion 1 may be attached to the front bumper 201, thereby also achieving the fixed connection between the connecting portion 1 and the front bumper 201.

[0052] like Figure 1 、 Figure 2 or Figure 3 As shown, in some embodiments, the connecting portion 1 is arranged along the length direction of the front bumper 201, and a plurality of first measuring rulers 2 of different lengths are arranged at equal intervals along the length direction of the connecting portion 1 in a manner of gradually increasing or decreasing lengths.

[0053] When multiple first measuring rulers 2 of different lengths are broken, they are broken in the order of long ones first and short ones later. Therefore, according to the above arrangement, it is convenient for the user to obtain the sinking distance of the front bumper 201 based on the dimensions of the broken first measuring ruler 2 and the adjacent unbroken first measuring ruler 2, which is convenient for observation and calculation.

[0054] like Figure 5 and Figure 6 As shown, it should be noted that the length direction of the front bumper 201 is consistent with the width direction of the vehicle 200, so the length direction of the connecting portion 1 is also consistent with the width direction of the vehicle 200. In this embodiment, the length direction of the connecting portion 1 is consistent with the width direction of the vehicle 200. Figure 3 The left and right directions are consistent, and the first measuring rulers 2 of different lengths are arranged in accordance with Figure 3 In other embodiments, the first measuring rulers 2 of different lengths may be arranged in a manner of gradually decreasing lengths from left to right. Figure 3 The lengths are gradually increasing from left to right.

[0055] like Figure 3 As shown, in some embodiments, the difference a between every two adjacent first measuring scales 2 is equal.

[0056] By setting the difference a between every two adjacent first measuring rulers 2 to be equal, the difference a between any two adjacent first measuring rulers 2 is made the same, thereby unifying the measurement accuracy and facilitating measurement calculation.

[0057] It should be noted that the size of the difference a limits the measurement accuracy of the measuring device 100. Specifically, the smaller the difference a is set, the higher the measurement accuracy is. However, the more first measuring scales 2 need to be set, the heavier and larger the measuring device 100 will be. Therefore, it is particularly important to reasonably set the difference a.

[0058] It should be noted that the measurement accuracy of the measuring device 100 is half of the difference a.

[0059] Preferably, the difference a is less than or equal to 5 mm.

[0060] By setting the difference a to be less than or equal to 5 mm, the measurement accuracy of the measuring device 100 is ensured to be within a reasonable range, thereby ensuring the reliability of the test result.

[0061] Exemplarily, the value of the difference a may be 5 mm, 4 mm, 3 mm, 2 mm or 1 mm, etc., and may be set specifically as needed. This embodiment is described by taking the difference a value of 5 mm as an example.

[0062] Based on the case where the difference a is 5 mm, the measurement accuracy of the measuring device 100 is 2.5 mm. When calculating the sinking distance of the front bumper 201, the distance from the first measuring ruler 2 with the shortest length in the collision break to the ground 300 can also be obtained, and the distance from the ground plus the measurement accuracy of 2.5 mm is the measured sinking distance of the front bumper 201.

[0063] like Figures 1 to 3 As shown in any one of the figures, in some embodiments, the measuring device 100 further includes a second set of measuring rulers fixedly connected to the connecting portion 1, the second set of measuring rulers extending toward the ground 300, the length of the second set of measuring rulers being less than the length of the first set of measuring rulers, the second set of measuring rulers including a plurality of second measuring rulers 3 of varying lengths, the plurality of first measuring rulers 2 of varying lengths and the plurality of second measuring rulers 3 of varying lengths being alternately arranged along the length direction of the front bumper 201.

[0064] By further providing a second set of measuring scales, the length of which is shorter than that of the first set of measuring scales, when all the first set of measuring scales collide with the ground 300 and are broken, the second set of measuring scales can be used to further expand the measurement range and improve measurement accuracy. In addition, the first measuring scales 2 and the second measuring scales 3 are alternately provided along the length direction of the front bumper 201, which can increase the spacing between adjacent second measuring scales 3 and adjacent first measuring scales 2, thereby reducing the possibility of one of the first measuring scales 2 or the second measuring scale 3 accidentally touching its adjacent measuring scale when broken, causing testing errors.

[0065] Specifically, the difference a between the multiple first measuring rulers 2 (or second measuring rulers 3) is small. When one of the first measuring rulers 2 breaks, it may accidentally touch another adjacent first measuring ruler 2 due to lateral tilt, causing it to break before it contacts the ground 300, thereby causing an error in the measured sinking distance of the front bumper 201, which is specifically manifested as being too large.

[0066] like Figures 1 to 3 As shown in any one of the figures, in some embodiments, the measuring device 100 further includes a third set of measuring rulers fixedly connected to the connecting portion 1, the third set of measuring rulers extending toward the ground 300, the length of the third set of measuring rulers being less than the length of the second set of measuring rulers, the third set of measuring rulers including a plurality of third measuring rulers 4 of varying lengths, and the plurality of first measuring rulers 2 of varying lengths, the plurality of second measuring rulers 3 of varying lengths, and the plurality of third measuring rulers 4 of varying lengths being alternately arranged in sequence along the length direction of the front bumper 201.

[0067] By further providing a third set of measuring rulers, the length of the third set of measuring rulers is shorter than that of the second set of measuring rulers. When both the first and second sets of measuring rulers collide with the ground 300 and are broken, the third set of measuring rulers can further expand the measurement range and increase measurement accuracy. Furthermore, multiple first measuring rulers 2, multiple second measuring rulers 3, and multiple third measuring rulers 4 are alternately arranged along the length direction of the connecting portion 1 to increase the spacing between adjacent first measuring rulers 2, adjacent second measuring rulers 3, and adjacent third measuring rulers 4, thereby reducing the possibility of one of the first measuring rulers 2, second measuring rulers 3, or third measuring ruler 4 accidentally touching its adjacent measuring ruler when breaking, causing test errors.

[0068] The specific description of how the measurement error is formed can be found in the above description of the first measuring ruler 2 , which will not be repeated in this embodiment.

[0069] like Figures 1 to 3 As shown, in some embodiments, the connection portion 1 is provided along the length direction of the front bumper 201 , and a plurality of second measuring rulers 3 of different lengths are provided on the connection portion 1 in a manner of gradually increasing or decreasing lengths.

[0070] According to the above arrangement, the second measuring rulers 3 of different lengths are broken in sequence from long to short when they are broken. Therefore, the user can conveniently calculate the sinking distance of the front bumper 201 based on the size of the broken second measuring ruler 3 and the adjacent unbroken second measuring ruler 3, which is convenient for observation and calculation.

[0071] In this embodiment, a plurality of second measuring rulers 3 of different lengths are arranged along Figure 3 The lengths of the first measuring rulers 2 are gradually decreasing from left to right, but the arrangement is not limited thereto. For example, in other embodiments, the first measuring rulers 2 of different lengths are arranged along the Figure 3 In the case where the lengths of the second measuring rulers 3 are gradually increased from left to right, a plurality of second measuring rulers 3 of different lengths may also be arranged along the Figure 3 The lengths are gradually increasing from left to right.

[0072] Based on the connection portion 1 being arranged along the length direction of the front bumper 201 , a plurality of third measuring rulers 4 of different lengths are arranged on the connection portion 1 in a manner of gradually increasing or decreasing lengths.

[0073] According to the above arrangement, the third measuring rulers 4 of different lengths are broken in sequence from long to short when they are broken. Therefore, the user can conveniently calculate the sinking distance of the front bumper 201 based on the size of the broken third measuring ruler 4 and the adjacent unbroken third measuring ruler 4, which is convenient for observation and calculation.

[0074] In this embodiment, a plurality of third measuring rulers 4 of different lengths are arranged along Figure 3 The lengths of the first measuring rulers 2 and the second measuring rulers 3 are gradually decreasing from left to right, but the arrangement is not limited thereto. For example, in other embodiments, the first measuring rulers 2 and the second measuring rulers 3 of different lengths are arranged along the Figure 3 In the case where the lengths of the third measuring rulers 4 are gradually increased from left to right, a plurality of third measuring rulers 4 of different lengths may also be arranged along the Figure 3 The lengths are gradually increasing from left to right.

[0075] It should be noted that the arrangement of the plurality of first measuring rulers 2 , the plurality of second measuring rulers 3 and the plurality of third measuring rulers 4 avoids the positions of the first installation position 11 and the second installation position 12 on the connecting portion 1 .

[0076] For example, the first measuring ruler 2, the second measuring ruler 3, and the third measuring ruler 4 are all arranged perpendicular to the connecting portion 1 and the ground surface 300, i.e., they are parallel to each other. The first measuring ruler 2, the second measuring ruler 3, and the third measuring ruler 4 can all be configured as elongated rectangular plates, with the thickness of the rectangular plates aligning with the width of the vehicle 200 (the length of the front bumper 201), and the width of the rectangular plates aligning with the length of the vehicle 200 (perpendicular to the length of the front bumper 201). This reduces wind resistance on the rectangular plates during vehicle 200 travel, prevents abnormal breakage of the rectangular plates due to excessive wind resistance, and reduces energy consumption of the vehicle 200. However, the configuration is not limited to the above. The first measuring ruler 2, the second measuring ruler 3, and the third measuring ruler 4 can also be configured as elongated cylinders, etc.

[0077] like Figure 3 As shown, in some embodiments, the difference b between every two adjacent second measuring scales 3 is equal, and / or the difference c between every two adjacent third measuring scales 4 is equal.

[0078] Similar to the setting of the first measuring ruler 2, by setting the difference b between each two adjacent second measuring rulers 3 of unequal lengths to be equal, and setting the difference c between each two adjacent third measuring rulers 4 of unequal lengths to be equal, the differences between adjacent second measuring rulers 3 and / or between adjacent third measuring rulers 4 are made the same, thereby unifying the measurement accuracy of the second measuring ruler 3 and / or the third measuring ruler 4 and facilitating measurement calculations.

[0079] It should be noted that the size of the difference b and the difference c respectively limits the measurement accuracy of the second group of measuring scales and the third group of measuring scales. Specifically, the smaller the difference b (difference c) is set, the higher the measurement accuracy of the second group of measuring scales (third group of measuring scales), but the more numbers need to be set, which will also cause the measuring device 100 to be heavier and larger in volume. Therefore, it is particularly important to reasonably set the difference b and difference c.

[0080] In this embodiment, the difference a, the difference b, and the difference c are set to be equal to unify the measurement accuracy of the entire measuring device 100, making the measurement calculation more convenient and quick.

[0081] It should be noted that when all the measuring rulers of the first set are broken and the measuring rulers of the second set are not broken, the ground clearance of the shortest first measuring ruler 2 in the first set of measuring rulers is found, and the ground clearance of the longest second measuring ruler 3 in the second set of measuring rulers is found. The sinking distance of the front bumper 201 is between the above two ground clearances, and specifically can be half of the sum of the two ground clearances; or the ground clearance of the shortest first measuring ruler 2 in the first set of measuring rulers plus 2.5 mm is the sinking distance of the front bumper 201.

[0082] Of course, when the first set of measuring scales and the second set of measuring scales are all broken, but the third set of measuring scales is not broken, the sinking distance of the front bumper 201 can also be calculated according to the above method, which will not be repeated in this embodiment.

[0083] like Figure 2 and Figure 4 As shown, in some embodiments, at least one end of the first measuring ruler 2 , the second measuring ruler 3 and the third measuring ruler 4 connected to the connecting portion 1 is provided with a breaking groove 21 , and the breaking groove 21 communicates with the connecting portion 1 .

[0084] The provision of the fracture groove 21 reduces the connection area between at least one of the first measuring scale 2, the second measuring scale 3, and the third measuring scale 4 and the connecting portion 1, thereby weakening the connection strength between the connecting portion 1 and the measuring scale. This can make it easier for the first measuring scale 2, the second measuring scale 3, or the third measuring scale 4 to break at the fracture groove 21 when subjected to a collision force, thereby avoiding the situation where the first measuring scale 2, the second measuring scale 3, or the third measuring scale 4 collides with the ground 300 but does not break due to insufficient collision force, thereby further ensuring the reliability of the measurement results.

[0085] In this embodiment, the first measuring ruler 2 , the second measuring ruler 3 and the third measuring ruler 4 are all provided with a breaking groove 21 , so that the three can be easily broken when subjected to collision force.

[0086] Taking the breaking groove 21 provided on the first measuring scale 2 as an example for explanation, the breaking groove 21 runs through the thickness direction of the first measuring scale 2, and the top of the breaking groove 21 is connected to the bottom surface of the connecting portion 1, and one side of the breaking groove 21 is connected to the side of the first measuring scale 2, so as to reduce the connection area between the end of the first measuring scale 2 and the connecting portion 1, so that the first measuring scale 2 is easily broken at the breaking groove 21 when subjected to force.

[0087] Specifically, the fracture groove 21 can be configured as a circular groove, an elliptical groove, a geometric groove or other special-shaped grooves. In this embodiment, the fracture groove 21 is configured as a rectangular groove as an example for description.

[0088] As for the setting position of the breaking groove 21, in some embodiments, the connecting portion 1 is fixedly connected to the bottom of the front bumper 201, the first measuring scale 2, the second measuring scale 3 and the third measuring scale 4 are set at the bottom of the front bumper 201 through the connecting portion 1, and the breaking groove 21 is set towards the front and / or rear of the vehicle.

[0089] When the breaking groove 21 is arranged toward the front and / or rear of the vehicle, at least one of the first measuring ruler 2, the second measuring ruler 3, and the third measuring ruler 4 tends to break along the front-to-rear direction of the vehicle 200 (the length direction of the vehicle 200) when subjected to a collision force, thereby reducing the possibility that a break along the width direction of the vehicle 200 would affect the adjacent measuring rulers. Furthermore, the breaking direction of the measuring rulers can be controlled by the position setting of the breaking groove 21.

[0090] It should be noted that the front of the vehicle is the direction toward the front of the vehicle 200, and the rear of the vehicle is the direction toward the rear of the vehicle 200. The breaking groove 21 is set toward the front of the vehicle and / or the rear of the vehicle to guide at least one of the first measuring ruler 2, the second measuring ruler 3 and the third measuring ruler 4 to break along the length direction of the vehicle 200 when it collides with the ground 300 and is subjected to force, thereby reducing the possibility of it breaking along the width direction of the vehicle 200.

[0091] In this embodiment, the fracture groove 21 is arranged toward the front of the vehicle, but is not limited thereto. For example, in other embodiments, the fracture groove 21 may also be arranged toward the rear of the vehicle, or two fracture grooves 21 may be provided and respectively arranged toward the front and rear of the vehicle.

[0092] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be included in the scope of protection defined in this application.

Claims

1. A measuring device for measuring the sinking distance of a front bumper (201) when a vehicle (200) is braked, characterized in that: The measuring device (100) comprises: A connecting portion (1) for fixedly connecting to the front bumper (201); A first set of measuring scales is fixedly connected to the connecting portion (1), and the first set of measuring scales is extended in the direction of the ground (300). The first set of measuring scales includes a plurality of first measuring scales (2) of different lengths. The plurality of first measuring scales (2) of different lengths are spaced apart along the length direction of the front bumper (201). When the front bumper (201) sinks, the first measuring scales (2) of the plurality of first measuring scales (2) of different lengths that are in contact with the ground (300) can be broken by collision.

2. The measuring device according to claim 1, characterized in that The connecting portion (1) is arranged along the length direction of the front bumper (201), and a plurality of first measuring rulers (2) of different lengths are arranged at equal intervals on the connecting portion (1) in a manner of gradually increasing or gradually decreasing lengths.

3. The measuring device according to claim 2, characterized in that The difference a between any two adjacent first measuring rulers (2) is equal.

4. The measuring device according to claim 3, characterized in that The difference a is less than or equal to 5 mm.

5. The measuring device according to any one of claims 1 to 4, characterized in that The measuring device (100) further comprises a second set of measuring scales fixedly connected to the connecting portion (1), the second set of measuring scales extending in the direction of the ground (300), the length of the second set of measuring scales being less than the length of the first set of measuring scales, the second set of measuring scales comprising a plurality of second measuring scales (3) of varying lengths, the plurality of first measuring scales (2) of varying lengths and the plurality of second measuring scales (3) of varying lengths being alternately arranged along the length direction of the front bumper (201).

6. The measuring device according to claim 5, characterized in that The measuring device (100) further comprises a third set of measuring scales fixedly connected to the connecting portion (1), the third set of measuring scales extending in the direction of the ground (300), the length of the third set of measuring scales being less than the length of the second set of measuring scales, the third set of measuring scales comprising a plurality of third measuring scales (4) of varying lengths, and the plurality of first measuring scales (2) of varying lengths, the plurality of second measuring scales (3) of varying lengths, and the plurality of third measuring scales (4) of varying lengths being alternately arranged in sequence along the length direction of the front bumper (201).

7. The measuring device according to claim 6, characterized in that The connecting portion (1) is arranged along the length direction of the front bumper (201), and a plurality of second measuring rulers (3) of different lengths are arranged on the connecting portion (1) in a manner of gradually increasing or gradually decreasing lengths; And / or, the connecting portion (1) is arranged along the length direction of the front bumper (201), and a plurality of third measuring rulers (4) of different lengths are arranged on the connecting portion (1) in a manner of gradually increasing or gradually decreasing lengths.

8. The measuring device according to claim 7, characterized in that The difference b between any two adjacent second measuring rulers (3) is equal; And / or, the difference c between every two adjacent third measuring rulers (4) is equal.

9. The measuring device according to claim 6, characterized in that At least one of the first measuring ruler (2), the second measuring ruler (3) and the third measuring ruler (4) is provided with a breaking groove (21) at one end connected to the connecting portion (1), and the breaking groove (21) is in communication with the connecting portion (1).

10. The measuring device according to claim 9, characterized in that The connecting portion (1) is fixedly connected to the bottom of the front bumper (201); the first measuring ruler (2), the second measuring ruler (3) and the third measuring ruler (4) are arranged at the bottom of the front bumper (201) through the connecting portion (1); and the breaking groove (21) is arranged toward the front and / or rear of the vehicle.

11. The measuring device according to any one of claims 1 to 4, characterized in that Two first mounting positions (11) are provided at both ends of the connecting portion (1), and the two first mounting positions (11) are used to fix the front bumper (201) and the two ends of the connecting portion (1).

12. The measuring device according to claim 11, characterized in that The connecting portion (1) is further provided with a second mounting position (12), the second mounting position (12) being provided between the two first mounting positions (11), and the second mounting position (12) being used for fixing the front bumper (201) and the middle area of the connecting portion (1).

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