A fixture and system for testing vibration of a car tailgate

Abstract

This invention relates to the field of vibration testing technology for automotive parts, and discloses a fixing fixture and system for vibration testing of a car tailgate. It includes a contour beam, a front crossbeam on one side of the contour beam, at least two sets of first support rods on the top of the front crossbeam, and at least two sets of second support rods on the top of the contour beam. Each set of first support rods has a hinge mounting plate at its top, and each set of second support rods has a hydraulic mounting base fixing plate at its top. The hinge mounting plate is used to fix and connect with the hinge fixing seat bolt holes of the tailgate, and the hydraulic mounting base fixing plate is used to fix and connect with the hydraulic strut fixing seat bolt holes. This invention utilizes the tailgate hinge fixing seat and the tailgate hydraulic strut fixing seat as the main support points of the fixture, and cleverly combines the hinge and hydraulic strut fixing seat bolt holes with the fixture connection plate. Through the fixed cooperation between the support rods and the hinge fixing seat bolt holes and the hydraulic strut fixing seat bolt holes, stable support for the tailgate is achieved, enabling it to maintain stability during vibration.

Description

Technical Field

[0001] This invention relates to the field of vibration testing technology for automotive parts, and in particular to a fixing fixture and system for vibration testing of automotive tailgate. Background Technology

[0002] To determine whether automotive parts will malfunction during use, vibration durability tests are required. These tests help ensure the reliability of automotive products and identify any defects.

[0003] Vibration testing of a car's tailgate requires fixing it to a vibration testing bench. The vibration bench then conducts a vibration test on the tailgate components to determine if there are any problems. The main purpose of the tailgate vibration test is to check whether the tailgate can withstand the impact of high-speed operation. However, due to the irregular shape of the car tailgate, in most cases, the tailgate is not securely fixed during vibration testing, and localized loosening occurs. Therefore, it is difficult to maintain stability during the vibration test, thus affecting the test results. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a fixing fixture and system for vibration testing of automotive tailgates. The fixture utilizes a tailgate hinge fixing seat and a tailgate hydraulic strut fixing seat as the main support points. At the same time, it cleverly combines the bolt holes of the hinge and hydraulic strut fixing seats with the fixture connecting plate to achieve stable support for the tailgate, enabling it to maintain stability during vibration.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, a vibration testing fixture for a car tailgate includes a contour beam, a front crossbeam on one side of the contour beam, at least two sets of first support rods on the top of the front crossbeam, at least two sets of second support rods on the top of the contour beam, a hinge mounting plate at the top of each set of first support rods, and a hydraulic mounting base fixing plate at the top of each set of second support rods. The hinge mounting plate is used to be fixedly connected to the hinge fixing base bolt holes of the tailgate, and the hydraulic mounting base fixing plate is used to be fixedly connected to the hydraulic strut fixing base bolt holes.

[0007] As a further implementation, the contour beam is arranged opposite to the front crossbeam, and the two ends of the contour beam and the front crossbeam are fixedly connected by longitudinal beams.

[0008] As a further implementation, both the contour beam and the front crossbeam are provided with a base plate at their bottom, which is then fixed to the vibration testing equipment.

[0009] As a further implementation, the base plate is located at the connection between the contour beam and the front crossbeam and the longitudinal beam.

[0010] As a further implementation, the contour beam is designed and manufactured based on the shape of the bottom arc and skirt of the rear door, and is used for welding to fit the rear door.

[0011] As a further implementation, the front crossbeam is provided with a first support rod near the top of both ends, and the contour beam is provided with a second support rod at the top of both ends.

[0012] As a further implementation, both the first support rod and the second support rod are inclined toward the middle position of the corresponding beam.

[0013] As a further implementation, the height of the first support rod is greater than the height of the second support rod.

[0014] As a further implementation, a reinforcing beam is provided between the first support rods, and a reinforcing beam is provided between the first support rod and the second support rod.

[0015] Secondly, a vehicle tailgate vibration testing system includes a vibration testing device, wherein the top of the vibration testing device is fixedly installed with a vehicle tailgate vibration testing fixture as described above.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. This invention utilizes the rear door hinge fixing seat and the rear door hydraulic strut fixing seat as the main support points of the tooling. At the same time, it cleverly combines the bolt holes of the hinge and hydraulic strut fixing seats with the tooling connecting plate. Through the mounting plate and fixing plate set on the corresponding support rod, which are fixedly engaged with the bolt holes of the hinge fixing seat and the hydraulic strut fixing seat, stable support for the rear door is achieved, enabling it to maintain stability during vibration.

[0018] 2. The contour beam of this invention is designed and manufactured based on the shape of the bottom arc and skirt of the tailgate, and is used for welding to the tailgate. By utilizing the wide bottom and skirt of the tailgate, the contour beam is designed to fit tightly and weld to it, providing excellent support and enclosure, and increasing the stability of the tailgate during vibration.

[0019] 3. The tooling of the present invention can be firmly and tightly connected to the rear door of the car and securely installed with the vibration table equipment, ensuring that the test is completed efficiently and reliably. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the overall composition of the vibration test fixture and the rear door in an embodiment of the present invention;

[0022] Figure 2 This is a top view of the vibration test fixture in an embodiment of the present invention;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the vibration test fixture in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the rear door structure in an embodiment of the present invention.

[0025] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0026] Among them: 1. Contouring beam, 2. Front crossbeam, 3. First longitudinal beam, 4. Second longitudinal beam, 5. First support rod, 6. First support rod, 7. First hinge mounting plate, 8. Second hinge mounting plate, 9. Hydraulic mounting base fixing plate, 10. Hydraulic mounting base fixing plate, 11. First base plate, 12. Second base plate, 13. First base plate, 14. Second base plate, 15. Second support rod, 16. Hinge fixing base bolt hole, 17. Hydraulic strut fixing base bolt hole. Detailed Implementation

[0027] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] Example 1

[0029] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a vibration test fixture for a car tailgate includes a contour beam 1 and a front crossbeam 2. The contour beam 1 and the front crossbeam 2 are fixedly connected. At least two sets of support rods are welded to the top of each of the contour beam 1 and the front crossbeam 2 to achieve fixed support for the car tailgate. The bottom of the contour beam 1 and the front crossbeam 2 are used to be fixedly installed on a vibration test device to achieve vibration testing of the car tailgate.

[0030] like Figures 1-3 As shown, the front crossbeam 2 is located on one side of the contour beam 1, and the contour beam is positioned opposite to the front crossbeam. The two ends of the contour beam and the front crossbeam are fixedly connected by longitudinal beams. One end of the contour beam 1 and the front crossbeam 2 are fixedly connected by the first longitudinal beam 3, and the other end is fixedly connected by the second longitudinal beam 4, forming a frame structure that serves as the base.

[0031] Both the contour beam 1 and the front crossbeam 2 have base plates at their bottoms, which are fixedly connected to the vibration testing equipment via bolt holes and corresponding bolt assemblies. The base plates are located at the connections between the contour beam / front crossbeam and the longitudinal beams. Figure 2 As shown, a first base plate 11 is welded to one end of the bottom of the front crossbeam, and a second base plate 12 is welded to the other end. A first base plate 13 is welded to one end of the bottom of the contour beam, and a second base plate 14 is welded to the other end. The setting of the first and second base plates achieves relative fixation between the vibration test equipment and the contour beam 1 and the front crossbeam 2.

[0032] like Figure 1 and Figure 2 As shown, a first support rod is provided at the top of the front crossbeam 2, and a second support rod is provided at the top of the contour beam 1. The bottom ends of the first support rods 5 and 6 are welded to both ends of the front crossbeam, and the top ends of the first support rods 5 and 6 extend upward and approach each other towards the middle of the front crossbeam 2, thus achieving an inclined setting of the first support rods 5 and 6. Second support rods 15 are provided at the top of both ends of the contour beam. The top ends of the second support rods 15 extend upward and approach each other towards the middle of the contour beam 1, and the second support rods 15 are also inclined. The top ends of the first and second support rods 15 are used for fixed connection with the rear door. The inclined support rods form a triangular support structure with the rear door, improving the stability of the support.

[0033] like Figure 4 As shown, the top of the rear door has two sets of hinge fixing bolt holes 16 for installing hinge fixing seats, and the left and right sides of the middle position of the rear door have hydraulic strut fixing bolt holes 17 for installing hydraulic strut fixing seats.

[0034] This embodiment utilizes the rear door hinge fixing seat and the rear door hydraulic strut fixing seat as the main support points of the tooling. At the same time, it cleverly combines the bolt holes of the hinge and hydraulic strut fixing seats with the tooling connecting plate. By fixing the support rod with the bolt holes 16 of the hinge fixing seat and the bolt holes 17 of the hydraulic strut fixing seat, stable support for the rear door is achieved, enabling it to maintain stability during vibration.

[0035] like Figure 1 and Figure 2 As shown, the top of the two first support rods is provided with hinge mounting plates, namely the first hinge mounting plate 7 and the second hinge mounting plate 8. The first hinge mounting plate 7 and the second hinge mounting plate 8 are provided with corresponding bolt holes, so that the hinge mounting plates and the hinge fixing seat bolt holes of the rear door are fixedly connected by bolt assemblies.

[0036] The top of the second support rod 15 is provided with a hydraulic mounting base fixing plate, namely a hydraulic mounting base fixing plate 9 and a hydraulic mounting base fixing plate 10 located at the top of the two second support rods 15. The hydraulic mounting base fixing plate 9 and the hydraulic mounting base fixing plate 10 are provided with bolt holes. The hydraulic mounting base fixing plate is used to fix and connect with the bolt holes of the hydraulic strut fixing seat through a bolt assembly.

[0037] Understandably, the tilt angles of the hydraulic mounting base fixing plate and the hinge mounting plate on the corresponding support rods are adjusted after the tailgate is installed. Once adjusted to a suitable angle, they are welded to the support rods for easy fixation during subsequent vibration tests. Since the first support rod is used to support the top of the tailgate, its height is greater than that of the second support rod.

[0038] In this embodiment, the tailgate hinge mounting bracket and tailgate hydraulic strut mounting bracket are themselves key automotive components. Each mounting point has a high-strength inner reinforcing plate, and the high strength of these key points ensures excellent stability.

[0039] The contour beam is designed and manufactured based on the shape of the bottom arc and skirt of the tailgate, and is used for welding to the tailgate. Utilizing the wide bottom and skirt of the tailgate, the contour beam 1 is designed to fit tightly against and weld to them, providing excellent support and enclosure, increasing the stability of the tailgate during vibration. The fixture in this embodiment can be firmly and tightly connected to the car tailgate and securely installed on the vibration table equipment, ensuring efficient and reliable test completion.

[0040] In other examples, to further improve the overall integrity and stability of the tooling frame, a reinforcing beam is provided between the first support rods, or between the first support rod and the second support rod.

[0041] This embodiment utilizes the mounting plate and bolt fastening space of the tailgate component itself. The ingenious design allows the irregular shape of the tailgate to be installed tightly, stably, and securely on the vibration test bench, enabling it to withstand the impact of high-speed vibration operation.

[0042] It should be noted that the tailgate of the car in this embodiment is provided with two sets of hinge fixing seat bolt holes 16 and two sets of hydraulic strut fixing seat bolt holes 17. Therefore, the contour beam 1 and the front crossbeam 2 are respectively provided with two sets of support rods and corresponding hinge mounting plates and hydraulic mounting seat fixing plates. When the number of sets of hinge fixing seat bolt holes 16 and hydraulic strut fixing seat bolt holes 17 on the tailgate of the car changes, the number of sets of support rods on the tooling also changes accordingly to ensure that the tooling can achieve stable support for the tailgate of the car.

[0043] Example 2

[0044] In a typical embodiment of the present invention, a car rear door vibration test system includes a vibration test device. A car rear door vibration test fixture from Embodiment 1 is fixedly installed on the top of the vibration test device. The fixture is installed on the top plate of the vibration test device through a contour beam, a base plate at the bottom of the front crossbeam, and bolt holes.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fixture for testing the vibration of a car tailgate, characterized in that, It includes a contour beam, a front crossbeam on one side of the contour beam, at least two sets of first support rods on the top of the front crossbeam, at least two sets of second support rods on the top of the contour beam, a hinge mounting plate at the top of each set of first support rods, and a hydraulic mounting base fixing plate at the top of each set of second support rods. The hinge mounting plate is used to fix and connect with the hinge fixing base bolt holes of the rear door, and the hydraulic mounting base fixing plate is used to fix and connect with the hydraulic strut fixing base bolt holes.

2. The fixture for testing the vibration of a car tailgate according to claim 1, characterized in that, The contour beam is positioned opposite to the front crossbeam, and the two ends of the contour beam and the front crossbeam are fixedly connected by longitudinal beams.

3. The fixture for testing the vibration of a car tailgate according to claim 2, characterized in that, Both the contour beam and the front crossbeam are equipped with base plates at their bottoms, which are then fixed to the vibration testing equipment.

4. The fixture for testing the vibration of a car tailgate according to claim 3, characterized in that, The base plate is located at the connection between the contour beam and the front crossbeam and the longitudinal beam.

5. The fixture for testing the vibration of a car tailgate according to claim 1, characterized in that, The contour beam is designed and manufactured based on the shape of the bottom arc and skirt of the rear door, and is used for welding to fit the rear door.

6. The fixture for testing the vibration of a car tailgate according to claim 1, characterized in that, The front crossbeam is provided with a first support rod near the top of both ends, and the top of both ends of the contour beam is provided with a second support rod.

7. The fixture for testing the vibration of a car tailgate according to claim 6, characterized in that, Both the first and second support rods are inclined toward the middle position of the corresponding beam.

8. The automobile tailgate vibration test fixture according to claim 7, characterized in that, The height of the first support rod is greater than the height of the second support rod.

9. The fixture for testing the vibration of a car tailgate according to claim 8, characterized in that, A reinforcing beam is provided between the first support rods, and a reinforcing beam is provided between the first support rod and the second support rod.

10. A vibration testing system for a car tailgate, characterized in that, The device includes a vibration testing equipment, the top of which is fixedly installed with a vibration testing fixture for a car rear door as described in any one of claims 1-9.

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