Rear vehicle body collision test tool
By designing the rear body collision test tooling, the base, support unit and side fixing unit are used to simulate the vehicle environment, solving the problems of long development cycle, high cost and low efficiency in traditional tests, and achieving faster, economical and accurate rear-end Body test.
Patent Information
- Application Number
- CN202421131414.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The high-speed rear tail collision test of traditional vehicles has problems such as long development cycle, high cost and low test efficiency, especially due to the cumbersome assembly of the entire vehicle, it is difficult to effectively verify the safety performance of the rear body.
A rear body collision test tooling is designed, including a base, support unit and side fixing unit. These components are connected to the rigid wall to simulate the installation environment of the rear body in the entire vehicle, and realize independent high-speed tail collision test of the rear body.
Through this tooling, the rear body development cycle can be shortened, the testing cost can be reduced, the testing efficiency can be improved, the accuracy and safety of the test can be ensured, and the cumbersome assembly and high costs can be avoided by the vehicle test.
Smart Images
Figure CN222528898U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle collision tests and relates to a rear vehicle body collision test tool. Background Art
[0002] The rear body of a car is an important part of the rear of the car, mainly located in the direction of the rear wheels of the car. During the driving process of the car, the rear body may encounter a collision with the rear vehicle. Therefore, it is necessary to conduct a high-speed rear-end collision test on the rear body of the car to simulate the safety test of a rear-end collision accident.
[0003] Traditional vehicle high-speed rear-end collision tests are generally verified directly through the whole vehicle, but there are some disadvantages to direct verification in this way; for example, it is necessary to wait for the development of other vehicle components to be completed and assembled with the rear body before the rear body can be subjected to a high-speed rear-end collision test, thereby extending the rear body development cycle; at the same time, in order to obtain reliable data, multiple tests are required, and multiple rear-end high-speed collision tests are carried out on the whole vehicle. The cumbersome assembly of the whole vehicle leads to low test efficiency, and the test costs are high, such as vehicle costs and test facility costs. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a rear vehicle body collision test tool, by using the tool, the rear vehicle body development cycle can be shortened, the cost of the rear vehicle body rear-end collision test can be reduced, and the overall efficiency of the rear vehicle body rear-end collision test can be improved.
[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a rear vehicle body collision test tool, including a base for connecting to a rigid wall, and the base is provided with:
[0006] A support unit connected to the base and cantilevered from the base in a direction away from the rigid wall, wherein the support unit is configured to fit the bottom of the rear vehicle body and at least generate a vertical support force on the bottom of the rear vehicle body;
[0007] Two groups of side fixing units are provided, and the two groups of side fixing units are respectively located on both sides of the support unit and enclosed with the support unit to form the installation area of the rear vehicle body, and the side fixing units are configured to be able to fit the side surface of the rear vehicle body and the wheel arch profile of the rear vehicle body in the installation area;
[0008] The support unit and the side fixing unit are both provided with mounting points corresponding to the connection points on the rear body, and the mounting points are configured to enable the rear body assembled in the mounting area to be cantilevered and fixed in a direction away from the base.
[0009] In an optional embodiment of the present invention, the support unit and / or the side fixing unit are composed of multiple components, and the multiple components in the support unit or the side fixing unit are connected by welding and / or fasteners, and the components are plates and / or square tubes and / or square steels.
[0010] In an optional embodiment of the present invention, a slot structure for inserting the lower part of the rear body along a first direction is formed between the support unit and the lower parts of the two side fixing units, and the first direction is the front-rear direction of the rear body.
[0011] In an optional embodiment of the present utility model, the support unit includes a support subassembly and a first limit assembly;
[0012] The supporting subassembly is arranged in parallel and spaced apart from one side adjacent to the first limiting assembly and forms the upper and lower inner walls of the slot structure;
[0013] The supporting subassembly and / or the first limiting assembly are provided with a first mounting hole corresponding to a connection point on the rear vehicle body.
[0014] In an optional embodiment of the present utility model, the first limiting component includes:
[0015] A first bracket group is cantilevered on the base along a first direction;
[0016] The second bracket group is arranged on the side of the first bracket group away from the supporting sub-assembly, one end of the second bracket group is connected to the overhanging end of the first bracket group and the other end is connected to the base, and the first bracket group, the second bracket group and the base form a triangular structure.
[0017] In an optional embodiment of the present utility model, the side fixing unit includes:
[0018] A first overhanging member, disposed at a lower side of the installation area and used to fit the lower side of the rear vehicle body within the installation area;
[0019] A second overhanging member is arranged on the upper side of the installation area;
[0020] A suspension connecting member, connecting the first suspension member and the second suspension member, wherein the second suspension member and the suspension connecting member are used to fit the wheel cover profile of the rear vehicle body;
[0021] The first overhanging member and / or the second overhanging member and / or the overhanging connecting member are provided with second mounting holes corresponding to the connecting points on the rear vehicle body.
[0022] In an optional embodiment of the present invention, a limiting member parallel to the first overhang is provided on at least one side of the first overhang, and the limiting member cooperates with the first overhang to form a guiding portion for the rear body to be inserted into the slot structure along the first direction, and the inner recess of the guiding portion is the inner corner of the slot structure.
[0023] In an optional embodiment of the present invention, the side fixing unit further includes a first reinforcing component for reinforcing the connection between at least one of the first overhanging member, the second overhanging member, and the overhanging connecting member and the base.
[0024] In an optional embodiment of the present invention, each of the side fixing units also includes a second reinforcement member arranged in the installation area, the second reinforcement member is used to connect the second overhang member and the base, and the second overhang member, the second reinforcement member and the base are combined to form a triangular structure.
[0025] In an optional embodiment of the present invention, the two side fixing units are fixedly connected via a connecting assembly.
[0026] The technical effect of the utility model lies in that the bottom of the rear body is adhered and supported by the support unit, the side and wheel arch profile of the rear body are adhered by the side fixing unit, and mounting points corresponding to the connection points on the rear body are arranged on the support unit and the side fixing unit to match the installation position and connection method of the rear body on the whole vehicle, thereby simulating the installation environment of the rear body installed in the whole vehicle, so that the safety collision test of the rear body conducted in advance is more accurate and more in line with the actual vehicle safety collision test environment, the accuracy of the high-speed rear-end collision test of the rear body is improved, and the development cycle of the rear body is shortened; the rear body collision test tooling structure of the present case is stable, has strong deformation resistance, and can be reused many times, thereby reducing the cost of the test facilities. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of the rear vehicle body collision test tooling in one embodiment of the utility model;
[0028] Figure 2 It is an oblique view of a rear vehicle body in an embodiment of the utility model being installed on a rigid wall through tooling;
[0029] Figure 3 It is a side structural schematic diagram of a rear vehicle body in an embodiment of the utility model being installed on a rigid wall through tooling;
[0030] Figure 4 It is a bottom view of the rear vehicle body in one embodiment of the utility model being installed on a rigid wall through tooling;
[0031] Figure 5 It is a top view of a rear vehicle body in an embodiment of the utility model being installed on a rigid wall through tooling;
[0032] Figure 6 It is a schematic diagram of the bottom three-dimensional structure of the rear vehicle body collision test tool in one embodiment of the utility model;
[0033] Figure 7 A three-dimensional oblique view of a rear vehicle body collision test tool in an embodiment of the utility model;
[0034] Figure 8 It is a front three-dimensional structural schematic diagram of a rear vehicle body collision test tool in one embodiment of the utility model;
[0035] Fig. 9 It is a side view of a rear vehicle body collision test tool in one embodiment of the utility model;
[0036] Figure markings: rigid wall 100, rear body 200, wheel arch profile 201, base 1, installation area 10, support unit 2, slot structure 20, support subassembly 21, first limiting assembly 22, first bracket group 221, second bracket group 222, connecting plate 2221, first mounting hole 23, second oblique square tube 24, side fixing unit 3, first overhang 31, second overhang 32, second reinforcement 321, overhang connecting member 33, second mounting hole 34, limiting member 35, first limiting plate 351, second limiting plate 352, first reinforcement assembly 36, connecting assembly 37. DETAILED DESCRIPTION
[0037] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0038] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.
[0039] like Figure 1-5As shown, the utility model provides a rear vehicle body collision test tool, which is referred to as the tool below. The tool includes a base 1 for connecting to a rigid wall 100, and a support unit 2 and a side fixing unit 3 are arranged on the base 1;
[0040] The support unit 2 is connected to the base 1 and cantilevered from the base 1 in a direction away from the rigid wall 100. The support unit 2 is configured to fit the bottom of the rear body 200 and at least generate a vertical support force on the bottom of the rear body 200.
[0041] The side fixing units 3 are provided with two groups, and the two groups of the side fixing units 3 are respectively located on both sides of the support unit 2 and enclosed with the support unit 2 to form the installation area 10 of the rear body 200. The side fixing units 3 are configured to be able to fit the side surface of the rear body 200 and the wheel housing profile 201 of the rear body 200 in the installation area 10.
[0042] The support unit 2 and the side fixing unit 3 are both provided with mounting points corresponding to the connection points on the rear body 200, and the mounting points are configured to enable the rear body 200 assembled in the installation area 10 to be cantilevered and fixed in a direction away from the base 1.
[0043] It should be noted that the traditional rear-end collision safety test of the rear body 200 of a vehicle is verified by the whole vehicle. In order to shorten the development cycle and reduce the development cost, the single-piece collision test of the rear body 200 is used in this case to verify the safety of the whole vehicle in advance. The tooling in this case is the tooling used for the high-speed rear-end collision safety test of the rear body 200. The rear body 200 in this case generally adopts a single piece of an integrated cast aluminum rear body. It should be understood that the rear body 200 in this case can also be formed by welding or fixed connection of multiple parts. The rear body collision test tooling in this case is matched and set according to the hole position, wheel cover profile 201, bottom and side shape structure of the rear body 200. Through the tooling, the rear body 200 can be fixed on the rigid wall 100 used for the collision test, so as to simulate the high-speed rear-end collision test environment when the rear body 200 is installed on the whole vehicle.
[0044] Generally, the hole positions, wheel arch profile 201, bottom and sides of the rear body 200 are connected and limited to the corresponding positions on the whole vehicle. Therefore, in this case, the bottom of the rear body 200 is adhered and supported by the support unit 2, and the side fixing unit 3 is adhered to the side and wheel arch profile 201 of the rear body 200, and the support unit 2 and the side fixing unit 3 are provided with mounting points corresponding to the connection points on the rear body 200 to match the installation position and connection method of the rear body 200 on the whole vehicle, thereby simulating the installation environment of the rear body 200 installed in the whole vehicle, so that the safety collision test conducted in advance on the rear body 200 is more accurate and more in line with the actual vehicle safety collision test environment, thereby improving the accuracy of the high-speed rear-end collision test of the rear body 200, avoiding the problems of high cost and long development cycle when directly verifying through the whole vehicle, thereby reducing the cost of the high-speed rear-end collision test of the rear body 200 and shortening the development cycle of the rear body 200. For example, before the actual vehicle test, the tooling simulation can discover the potential design problems and safety hazards of the rear body 200 in advance, so as to optimize and improve it at an early stage, reducing the cost and time loss caused by design defects in the future. The use of tooling simulation can shorten the design verification cycle. Compared with waiting for the actual vehicle to be manufactured before testing, simulation testing can obtain feedback and make adjustments faster, avoiding the trouble of tedious assembly before the whole vehicle test; by simulating the actual use environment and collision test, the safety and reliability of the vehicle in actual use can be ensured, and the overall quality of the product can be improved; although the initial investment in tooling design and simulation testing requires a certain amount of cost, compared with the large-scale recall or production delay caused by design errors, these costs are controllable and cost-effective; hidden problems such as process benchmarks may not be easy to be discovered in the early stage, and these problems can be identified in advance through tooling simulation to avoid greater losses in the later stage. The installation area 10 in the present case is to simulate the installation environment of the rear body 200 in the whole vehicle environment. There are multiple installation points in the present case, and they correspond one by one to the connection points where the rear body 200 is installed on the whole vehicle. The rear body 200 in the present case is installed in the installation area 10 and cantilevered and fixed in the direction away from the base 1, so as to facilitate the rear body 200 to perform high-speed rear-end collision tests and reduce damage to the rear body collision test tooling during the test, thereby increasing the number of times the rear body collision test tooling is used for collision tests, reducing the scrap rate of the rear body collision test tooling and the cost of re-production, thereby reducing the cost of the test; it should be understood that the rear body collision test tooling in the present case can also be manufactured into an integral casting that meets the use requirements according to actual needs.
[0045] Among them, in the vehicle coordinate system, the X direction generally refers to the length direction of the vehicle, the Y direction generally refers to the width direction of the vehicle, and the Z direction generally refers to the height direction of the vehicle. The first direction, the second direction, and the third direction in this case are related to the vehicle coordinate system.
[0046] like Figure 1-5 As shown, as an optional embodiment of the present case, the support unit 2 and / or the side fixing unit 3 are composed of multiple components, and the multiple components in the support unit 2 or the side fixing unit 3 are connected by welding and / or fasteners, and the components are plates and / or square tubes and / or square steels.
[0047] It should be noted that one of the support unit 2 and the side fixing unit 3 can be a casting, or the support unit 2 and / or the side fixing unit 3 are both welded parts. Among the components constituting the support unit 2 and the side fixing unit 3, the components are plates and / or square tubes and / or square steels and / or angle steels and / or H-shaped steels and / or steel plates, etc., which can be selected according to actual needs. In this case, it is preferred that some components are steel plates and other components are square tubes to improve the structural strength and deformation resistance of the support unit 2 and the side fixing unit 3, thereby improving the structural stability and structural strength of the rear body collision test tooling. In this case, it is preferred to form the rear body collision test tooling by welding dozens of components. The purpose of doing so is that, firstly, the welding process allows the manufacturer to quickly adjust and replace the structure of the tooling according to different vehicle models and design requirements, with high flexibility and adaptability; secondly, compared with integral casting, welding processing is usually cheaper, especially in small batch or customized production, welding can use plates of different materials and sizes as needed, thereby controlling costs; thirdly, if the tooling is damaged or needs to be upgraded, the welded parts are easier to repair or replace, which can extend the service life of the tooling and reduce waste; fourthly, plates of different shapes and thicknesses can be combined together through welding to obtain the required structural strength and rigidity, which can flexibly meet the actual needs of the collision test.
[0048] like Figure 1 , 6 -9, as an optional embodiment of the present case, a slot structure 20 is formed between the support unit 2 and the lower parts of the two side fixing units 3 for the lower part of the rear body 200 to be inserted along a first direction, and the first direction is the front-to-back direction of the rear body 200.
[0049] It should be noted that the two ends of the slot structure 20 can be open or closed, and the slot structure 20 can be an integrated structure or formed by splicing multiple panels protruding from the base 1. The specific selection can be made according to actual needs, and the slot wall of the slot structure 20 can also be hollow or closed, as long as it can meet the purpose of limiting the position after the lower part of the rear body 200 is plugged in. The front-to-back direction of the rear body 200 described in this case is the front-to-back direction of the rear body 200 assembled in the whole vehicle, that is, the X direction in the whole vehicle coordinate system. It should be understood that the first direction can allow some adaptive deviations from the X direction in the whole vehicle coordinate system. Generally, the end of the rear body 200 connected to the whole vehicle is the end inserted into the slot structure 20 along the first direction, and the tail of the rear body 200 in the whole vehicle is the end cantilevered outside the installation area 10; through the setting of the slot structure 20, the installation method of the rear body 200 in the whole vehicle is simulated, on the one hand, it can facilitate the rapid and accurate installation of the rear body 200 in the rear body collision test tooling, thereby improving the efficiency and accuracy of the assembly of the rear body 200 before the test, and on the other hand, it improves the stability of the installation of the rear body 200, thereby improving the accuracy of the test.
[0050] like Figure 1 , 6 -9, as an optional embodiment of the present case, the support unit 2 includes a support subassembly 21 and a first limiting assembly 22;
[0051] The supporting subassembly 21 is arranged in parallel and spaced apart from one side adjacent to the first limiting assembly 22 to form the upper and lower inner walls of the slot structure 20, where the upper and lower directions are relative to the Z direction in the vehicle coordinate system;
[0052] The supporting subassembly 21 and / or the first limiting assembly 22 are provided with a plurality of first mounting holes 23 corresponding to the connection points on the rear body 200 .
[0053] It should be noted that the support subassembly 21 includes a plurality of first longitudinal plates arranged along the first direction and at least one first transverse square tube arranged perpendicular to the first direction. The first longitudinal plates and the first transverse square tube are generally welded, and the first longitudinal square tube is generally welded to the base 1, so that the side of the support subassembly 21 in contact with the rear body 200 forms a support platform. The bottom of the support subassembly 21 can be provided with triangular reinforcing ribs according to actual needs, but if the structural strength meets the use requirements, it is not necessary to provide triangular reinforcing ribs at the bottom of the support subassembly 21, so as to reduce the space occupied by the support subassembly 21 and the manufacturing cost. Through the cooperation of the support subassembly 21 and the first limit assembly 22, and the formation of the upper and lower inner walls of the slot structure 20, the rear body 200 can be stably assembled before being fixed with the rear body collision test tooling by fasteners, thereby facilitating the subsequent fastening connection between the rear body 200 and the tooling and improving the assembly efficiency.
[0054] Further, the first mounting holes 23 are arranged along the second direction, the second direction is perpendicular to the first direction and the support unit 2, and the general first direction is the support direction of the support subassembly 21 to the rear body 200. The support subassembly 21 and / or the first limit assembly 22 are generally detachably fastened to the connection point on the rear body 200 by fasteners; the second direction in this case generally refers to the Z direction in the vehicle coordinate system, and it should be understood that the second direction can allow some adaptive deviations from the Z direction in the vehicle coordinate system.
[0055] like Figure 1 , 6 -9, as an optional embodiment of the present case, the first limit assembly 22 includes a first bracket group 221 and a second bracket group 222;
[0056] The first bracket group 221 is cantilevered on the base 1 along a first direction;
[0057] The second bracket group 222 is arranged on the side of the first bracket group 221 away from the supporting sub-assembly 21, one end of the second bracket group 222 is connected to the overhanging end of the first bracket group 221 and the other end is connected to the base 1, and the first bracket group 221, the second bracket group 222 and the base 1 form a triangular structure.
[0058] It should be noted that the first bracket group 221 includes a plurality of second longitudinal square tubes arranged along the first direction and at least one second transverse square tube perpendicular to the first direction; the second longitudinal square tubes, the second transverse square tubes, and the base 1 are welded and connected, and the second bracket group 222 includes a plurality of first oblique square tubes, one end of the plurality of first oblique square tubes is welded and connected to the second transverse square tube, and the other end of the first oblique square tube is welded and connected to the base 1; in this case, by forming a triangular structure between the first bracket group 221, the second bracket group 222 and the base 1, the first limit group can be improved. The overall structural stability and strength of the component 22 are improved, thereby reducing the deformation of the tooling during the test, increasing the number of times the tooling can be used during the rear body 200 collision test, and avoiding the influence of tooling deformation on subsequent tests; by arranging the second bracket group 222 on the side of the first bracket group 221 away from the supporting subassembly 21, the limited space on the base 1 can be fully utilized, avoiding the second bracket group 222 being arranged below the supporting subassembly 21 and occupying more space of the base 1, which is beneficial to reducing the overall occupied area of the base 1, thereby reducing the manufacturing cost of the rear body collision test tooling.
[0059] like Figure 1 , 6 -9, as an optional embodiment of the present case, the side fixing unit 3 includes a first overhanging member 31, a second overhanging member 32 and an overhanging connecting member 33;
[0060] The first overhanging member 31 is disposed at the lower side of the installation area 10 and is used to fit the lower side of the rear vehicle body 200 in the installation area 10;
[0061] The second overhanging member 32 is disposed on the upper side of the mounting area 10;
[0062] The suspension connecting member 33 connects the first suspension member 31 and the second suspension member 32, and the second suspension member 32 and the suspension connecting member 33 are used to fit the wheel housing profile 201 of the rear vehicle body 200;
[0063] The first overhanging member 31 and / or the second overhanging member 32 and / or the overhanging connecting member 33 are provided with second mounting holes 34 corresponding to the connecting points on the rear body 200 .
[0064] It should be noted that the first overhanging member 31 and the second overhanging member 32 are generally overhangingly arranged along the first direction and are both welded to the base 1, and the two ends of the overhanging connecting member 33 are respectively welded to the first overhanging member 31 and the second overhanging member 32. After the rear body 200 is assembled in the installation area 10, at least part of the structure of the first overhanging member 31 can be fitted with the lower side of the rear body 200, at least part of the structure of the second overhanging member 32 can be fitted with the upper part of the wheel housing profile 201 of the rear body 200, and at least part of the structure of the overhanging connecting member 33 can be fitted with the middle area of the wheel housing profile 201 of the rear body 200, so that the side fixing unit 3 can limit the side of the rear body 200 in the installation area 10, thereby improving the stability of the installation of the rear body 200. The first overhang 31 and / or the second overhang 32 and / or the overhang connector 33 are provided with second mounting holes 34 corresponding to the connection points on the rear body 200, and the second mounting holes 34 are arranged along a third direction, and the third direction is perpendicular to the side fixing unit 3 and the first direction; the first overhang 31 and / or the second overhang 32 and / or the overhang connector 33 are generally detachably fastened to the corresponding connection points on the rear body 200 by fasteners, which improves the fastness of the installation connection on the one hand, and facilitates the replacement of the rear body 200 with a new one for collision testing on the other hand. The third direction in this case generally refers to the Y direction in the whole vehicle coordinate system. It should be understood that the third direction can allow some adaptive deviations from the Y direction in the whole vehicle coordinate system.
[0065] like Figure 1 , 6 -9, as an optional embodiment of the present case, at least one side of the first overhang 31 is provided with a limit member 35 parallel to the first overhang 31, and the limit member 35 cooperates with the first overhang 31 to form a guide portion for the rear body 200 to be inserted into the slot structure 20 along the first direction, and the inner recess of the guide portion is the inner corner of the slot structure 20.
[0066] It should be noted that there may be a gap between the limit member 35 and the first overhang member 31, or the limit member 35 may be in contact with and connected to the edge of the first overhang member 31, and the specific selection shall be made according to actual needs; the limit member 35 includes a first limit plate 351 and / or a second limit plate 352, and the structures of the first limit plate 351 and the second limit plate 352 may be the same or different, and the first limit plate 351 is arranged on the upper side of the first overhang member 31, and the second limit plate 352 is arranged on the lower side of the first overhang member 31, and the first limit plate 351 and / or the second limit plate 352 are provided with holes corresponding to the connection points on the rear body 200. The limiting member 35 cooperates with the first overhang member 31 to form a guiding portion for the rear body 200 to be inserted into the slot structure 20 along the first direction. The guiding portion can limit the upper side, the lower side and both sides of the lower structure of the rear body 200, and is also used for guiding the rear body 200 when it is pre-installed in the installation area 10, thereby improving the installation convenience and stability of the rear body 200.
[0067] Furthermore, at least part of the limiting member 35 is also connected to the first overhanging member 31 to enhance the structural strength of the side fixing unit 3 .
[0068] like Figure 1 , 6 -9, as an optional embodiment of the present case, the side fixing unit 3 also includes a first reinforcing component 36 for reinforcing the connection between at least one of the first overhang 31, the second overhang 32 and the overhang connecting member 33 and the base 1.
[0069] It should be noted that, by further strengthening the connection strength and deformation resistance between the first overhang 31, the second overhang 32 and the overhang connector 33 through the first reinforcing component 36, and strengthening the connection strength and deformation resistance between the side fixing unit 3 and the base 1 through the first reinforcing component 36, the damage to the rear body collision test tooling during the test is reduced, thereby increasing the number of times the rear body collision test tooling is used for collision tests, reducing the scrap rate of the rear body collision test tooling and the cost of re-production, and thus reducing the cost of the entire test.
[0070] like Figure 1 , 6 -9, as an optional embodiment of the present case, the first reinforcing component 36 is a cross-shaped structure, and the base 1 is fixedly connected to at least two of the first cantilever member 31, the second cantilever member 32, and the cantilever connecting member 33 through the first reinforcing component 36 with a cross-shaped structure.
[0071] It should be noted that the first reinforcement component 36 is two square steels or square tubes or plate structures welded together. The first reinforcement component 36 can also be an integrated structure, so that the area enclosed by the first overhang 31, the second overhang 32, the overhang connector 33 and the base 1 forms a field-shaped structure, thereby improving the structural strength and deformation resistance of the side fixing unit 3 and the rear body collision test tooling.
[0072] like Figure 1 , 6 -9, as an optional embodiment of the present case, each of the side fixing units 3 also includes a second reinforcement 321 arranged in the installation area 10, and the second reinforcement 321 is used to connect the second overhang 32 and the base 1, and the second overhang 32, the second reinforcement 321 and the base 1 are enclosed to form a triangular structure.
[0073] It should be noted that the second reinforcement member 321 can be arranged in the installation area 10 or outside the installation area 10. In this case, it is preferably arranged in the installation area 10 because it can reduce the area of the base 1 located outside the installation area 10 occupied by the side fixing unit 3, thereby saving the material usage of the base 1 and reducing costs. The second overhang member 32, the second reinforcement member 321 and the base 1 are enclosed to form a triangular structure, thereby improving the structural stability and anti-deformation ability of the side fixing unit 3.
[0074] like Figure 1 , 6 -9, as an optional embodiment of the present case, a second oblique square tube 24 is connected between the supporting subassembly 21 and the second limiting plate 352 to enhance the connection strength between the supporting subassembly 21 and the second limiting plate 352 and the structural stability of the supporting subassembly 21.
[0075] like Figure 1 , 6 As shown in FIG. 9 , as an optional embodiment of the present case, the two side fixing units 3 are fixedly connected via a connecting component 37 .
[0076] It should be noted that the connection assembly 37 includes two square tubes, which are arranged in parallel at a predetermined interval and are welded to the two side fixing units 3, so as to improve the structural stability and deformation resistance between the two side fixing units 3.
[0077] like Figure 1 , 6-9, as an optional embodiment of the present case, the base 1 is fixedly connected to the rigid wall 100 by a plurality of fasteners, and the bolt holes on the base 1 are generally evenly distributed on the four edges of the base 1 to facilitate the installation of the base 1 and the fixed connection with the rigid wall 100; the thickness of the base 1 is generally 20㎜, and it is generally fixed to the rigid wall 100 by 12 large M40 screws.
[0078] As an optional embodiment of the present case, the second overhanging member 32 is generally a 5mm thick square tube, and is generally fastened to the rear body 200 by 7 M16 bolts.
[0079] As an optional embodiment of the present case, the overhanging connector 33 is generally a 10mm thick plate, such as an iron plate, and is generally fastened to the rear body 200 by 6 M16 bolts.
[0080] As an optional embodiment of the present case, the first overhanging member 31 is generally a 5mm thick square tube, and is generally fastened and locked to the rear body 200 by four M16 bolts.
[0081] As an optional embodiment of the present case, the support subassembly 21 is generally composed of 10 10mm iron plates (including two second limit plates 352) welded with a 5mm thick square tube. The support subassembly 21 is generally fastened and locked to the rear body 200 by 4 M16 bolts to achieve Z-axis support for the rear body 200.
[0082] As an optional embodiment of the present case, the connecting component 37 is generally two 5 mm thick rectangular tubes, which are used to fix the side fixing unit 3 in the Y direction.
[0083] As an optional embodiment of the present case, the second reinforcement member 321 is generally a large square tube with a thickness of 5 mm, which serves as a diagonal support for the second overhang member 32 .
[0084] As an optional embodiment of the present case, the first limiting plate 351 is generally fixedly connected to the rear side of the rear vehicle body 200 by three M16 bolts.
[0085] As an optional embodiment of the present case, the second longitudinal square tube of the second bracket group 222 includes at least two connecting plates 2221 fixedly connected to the rear body 200, and each connecting plate 2221 connects the rear body 200 to the tooling through an M16 bolt.
[0086] It should be noted that the component types, size thicknesses and number of mounting points of the base 1, the side fixing unit 3 and the support unit 2 in this case can be selected according to actual needs, as long as they can meet the purpose of use of this case.
[0087] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.
[0088] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.
[0089] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.
[0090] The above description of the illustrated embodiments of the present invention (including that described in the Abstract of the Specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.
[0091] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt specific environments or materials to the essential scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present utility model will be determined solely by the appended claims.
Claims
1. A rear body collision test tool, characterized in that: It comprises a base for connecting with a rigid wall, and the base is provided with: A support unit connected to the base and cantilevered from the base in a direction away from the rigid wall, wherein the support unit is configured to fit the bottom of the rear vehicle body and at least generate a vertical support force on the bottom of the rear vehicle body; Two groups of side fixing units are provided, and the two groups of side fixing units are respectively located on both sides of the support unit and enclosed with the support unit to form the installation area of the rear vehicle body, and the side fixing units are configured to be able to fit the side surface and wheel arch profile of the rear vehicle body in the installation area; The support unit and the side fixing unit are both provided with mounting points corresponding to the connection points on the rear body, and the mounting points are configured to enable the rear body assembled in the mounting area to be cantilevered and fixed in a direction away from the base.
2. The rear vehicle body collision test tooling according to claim 1, characterized in that: The support unit and / or the side fixing unit are composed of a plurality of components, and the plurality of components in the support unit or the side fixing unit are connected by welding and / or fasteners, and the components are plates and / or square tubes and / or square steels.
3. The rear vehicle body collision test tooling according to claim 1, characterized in that: A slot structure for inserting the lower part of the rear body along a first direction is formed between the support unit and the lower parts of the two side fixing units. The first direction is the front-rear direction of the rear body.
4. The rear vehicle body collision test tooling according to claim 3, characterized in that: The support unit includes a support subassembly and a first limiting assembly; The supporting subassembly is arranged in parallel and spaced apart from a side surface adjacent to the first limiting assembly and forms the upper and lower inner walls of the slot structure; The supporting subassembly and / or the first limiting assembly are provided with a first mounting hole corresponding to a connection point on the rear vehicle body.
5. The rear vehicle body collision test tooling according to claim 4, characterized in that: The first limiting component comprises: A first bracket group is cantilevered on the base along a first direction; The second bracket group is arranged on the side of the first bracket group away from the supporting sub-assembly, one end of the second bracket group is connected to the overhanging end of the first bracket group and the other end is connected to the base, and the first bracket group, the second bracket group and the base form a triangular structure.
6. The rear vehicle body collision test tooling according to claim 3, characterized in that: The side fixing unit comprises: A first overhanging member, disposed at a lower side of the installation area and used to fit the lower side of the rear vehicle body within the installation area; A second overhanging member is disposed on the upper side of the installation area; A suspension connecting member, connecting the first suspension member and the second suspension member, wherein the second suspension member and the suspension connecting member are used to fit the wheel cover profile of the rear vehicle body; The first overhanging member and / or the second overhanging member and / or the overhanging connecting member are provided with second mounting holes corresponding to the connecting points on the rear vehicle body.
7. The rear vehicle body collision test tooling according to claim 6, characterized in that: A limiting member parallel to the first overhang is provided on at least one side of the first overhang, and the limiting member cooperates with the first overhang to form a guiding portion for the rear body to be inserted into the slot structure along a first direction, and the inner recess of the guiding portion is the inner corner of the slot structure.
8. The rear vehicle body collision test tooling according to claim 6, characterized in that: The side fixing unit further includes a first reinforcing component for reinforcing the connection between at least one of the first overhanging member, the second overhanging member and the overhanging connecting member and the base.
9. The rear vehicle body collision test tool according to claim 6, characterized in that: Each of the side fixing units further includes a second reinforcement member disposed in the installation area, the second reinforcement member being used to connect the second overhanging member and the base, and the second overhanging member, the second reinforcement member and the base together form a triangular structure.
10. The rear vehicle body collision test tool according to claim 1, characterized in that: The two side fixing units are fixedly connected via a connecting assembly.