Vibration testing device and testing method of vibration testing device

Abstract

The invention discloses a vibration testing device and a testing method of the vibration testing device. The vibration testing device is used for testing a vehicle skylight and comprises an environment bin; the supporting system is arranged in the environment bin; the installation supports are arranged in the environment bin, the number of the installation supports is two, the two installation supports are arranged in a spaced mode and both supported on the supporting system, and the two opposite ends of the vehicle skylight are fixed to the two installation supports correspondingly; the excitation system is arranged in the environment bin, is connected with the mounting bracket and is used for exciting the mounting bracket to vibrate; and the anti-torsion assembly is arranged in the environment bin, and the two ends, in the length direction, of the anti-torsion assembly are rotationally connected with the two mounting supports correspondingly. According to the vibration testing device, the degradation of the overall vibration durability and the torsion abnormal sound performance of the vehicle sunroof can be accelerated, the development efficiency of the vehicle is improved, the development period of the vehicle is shortened, the testing cost of the vehicle sunroof is reduced, the development cost of the vehicle is reduced, and the quality of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vibration testing device and a testing method for the vibration testing device. Background Art

[0002] Nowadays, most vehicles are equipped with panoramic sunroofs as standard. They are large in size and are conducive to improving driving comfort. However, since the panoramic sunroof is installed on the roof, its installation position is relatively weak. When the body is twisted and deformed, the relative deformation of the panoramic sunroof is the largest, so it is more likely to produce twisting noise. At present, the warranty of most OEMs has been increased from 3 years or 100,000 kilometers to 5 years and 200,000 kilometers. Therefore, how to verify the accelerated degradation of vehicle performance has become a research object for major OEMs. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vibration test device, which can accelerate the decline of the overall vibration durability performance and torsional noise performance of the vehicle sunroof, improve the vehicle development efficiency, shorten the vehicle development cycle, and reduce the vehicle development cost.

[0004] The present invention also provides a testing method for a vibration testing device, wherein the vibration testing device is the above-mentioned vibration testing device.

[0005] The vibration testing device according to the embodiment of the present invention is used to test the vehicle sunroof and includes: an environmental chamber; a support system, which is arranged in the environmental chamber; a mounting bracket, which is arranged in the environmental chamber, and there are two mounting brackets, which are arranged at intervals and are both supported on the support system, and the opposite ends of the vehicle sunroof are respectively fixed on the two mounting brackets; an excitation system, which is arranged in the environmental chamber and connected to the mounting bracket, and is used to excite the mounting bracket to vibrate; an anti-torsion component, which is arranged in the environmental chamber, and the two ends of the anti-torsion component in the length direction are respectively rotatably connected to the two mounting brackets.

[0006] According to the vibration testing device of the embodiment of the present invention, the temperature, humidity, sunshine intensity and duration, etc. in the environmental chamber can be adjusted according to the needs of the user through the setting of the environmental chamber, and the size and phase of the excitation force acting on the two mounting brackets can be controlled through the setting of the excitation system, so that the vibration fatigue performance degradation of the vehicle sunroof under small displacement overall vibration and the torsional noise performance degradation under large displacement torsion can be tested, so that the vibration testing device can accelerate the decay of the overall vibration durability and torsional noise performance of the vehicle sunroof, and more quickly obtain the conclusion on whether the vehicle sunroof can meet the standards, so as to carry out corresponding optimization, which can improve the development efficiency of the vehicle, shorten the development cycle of the vehicle, reduce the testing cost of the vehicle sunroof, reduce the development cost of the vehicle, improve the quality of the vehicle, and ensure the vibration durability and torsional noise performance of the vehicle sunroof.

[0007] In addition, the vibration testing device according to the present invention may also have the following additional technical features:

[0008] In some embodiments, the excitation system includes: a first column, the first column extends in the up-down direction, and there are multiple first columns; a vibration exciter, the vibration exciter is multiple and is arranged one-to-one corresponding to the multiple first columns, the vibration exciter is connected to the upper end of the first column, and the vibration rods of the multiple vibration exciters are respectively connected to the two mounting brackets; a control system, and the control system is communicatively connected to the multiple vibration exciters.

[0009] In some embodiments, the number of the exciters is an even number, which is the same as the number of the exciters connected to the two mounting brackets.

[0010] In some embodiments, the anti-torsion assembly includes: a second column, the second column extends in the up and down direction; an anti-torsion pull rod, the anti-torsion pull rod includes a first section and two second sections, the first section is connected to the upper end of the second column and extends along the arrangement direction of the two mounting brackets, the two second sections are respectively connected to the two ends of the first section in the length direction, and the second section and the first section are at an angle to each other; a connecting rod, the connecting rod is two, one end of the two connecting rods is respectively rotatably connected to one end of the two second sections facing away from the first section, and one end of the two connecting rods facing away from the second section is respectively rotatably connected to the two mounting brackets.

[0011] In some embodiments, there are a plurality of second columns, and the plurality of second columns are spaced apart along the length direction of the first section.

[0012] In some embodiments, there are two anti-torsion components, and the two anti-torsion components are respectively connected to two ends of the mounting bracket in the length direction.

[0013] In some embodiments, the support system includes: two support assemblies, the two support assemblies are spaced apart along the arrangement direction of the two mounting brackets, the two mounting brackets are respectively supported on the two support assemblies, each of the support assemblies includes a plurality of support parts, and the plurality of support parts of the same support assembly are spaced apart along the length direction of the mounting bracket.

[0014] In some embodiments, the supporting component includes: a third column, the third column extending in the up-down direction; an air spring, the air spring is arranged on the third column, and the upper end of the air spring is connected to the mounting bracket.

[0015] In some embodiments, the lower sides of the two mounting brackets each have a slide groove, the slide groove extends along the length direction of the mounting bracket, a plurality of connecting parts are arranged in the slide groove, the vehicle sunroof is fixed to the mounting bracket through the connecting parts, the plurality of connecting parts are movable along the length direction of the slide groove, and the distance between two adjacent connecting parts is adjustable.

[0016] According to the testing method of the vibration testing device of an embodiment of the present invention, the vibration testing device is the above-mentioned vibration testing device, and the testing method includes: fixing the vehicle sunroof on the mounting bracket; inputting an excitation signal to the excitation system; adjusting the environmental parameters of the environmental chamber and the phase of the excitation signal according to the test time; measuring the durable abnormal sound performance parameters of the vehicle sunroof; and determining whether the durable abnormal sound performance parameters of the vehicle sunroof meet the preset performance parameters.

[0017] According to the testing method of the vibration testing device of the embodiment of the present invention, by adopting the above-mentioned vibration testing device and adjusting the environmental parameters of the environmental chamber and the phase of the excitation signal, it is possible to accelerate the decay of the overall vibration durability performance and torsional noise performance of the vehicle sunroof, and more quickly obtain the conclusion on whether the vehicle sunroof can meet the standards, so as to carry out corresponding optimization, thereby improving the vehicle development efficiency, shortening the vehicle development cycle, improving the vehicle's noise performance after high mileage, and improving the vehicle's quality.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a perspective view of a vibration testing device according to an embodiment of the present invention;

[0021] Figure 2is a three-dimensional diagram of the cooperation between the support system and the mounting bracket of the vibration testing device according to an embodiment of the present invention;

[0022] Figure 3 is a perspective view of a supporting component of a supporting system of a vibration testing device according to an embodiment of the present invention;

[0023] Figure 4 is a partial stereogram of the cooperation between the excitation system and the mounting bracket of the vibration testing device according to an embodiment of the present invention;

[0024] Figure 5 is a stereoscopic diagram of the cooperation between the exciter and the first column of the excitation system of the vibration testing device according to the embodiment of the present invention;

[0025] Figure 6 is a three-dimensional diagram of the cooperation between the anti-torsion assembly and the mounting bracket of the vibration testing device according to an embodiment of the present invention;

[0026] Figure 7 is a perspective view of an anti-torsion component of a vibration testing device according to an embodiment of the present invention;

[0027] Figure 8 is a three-dimensional diagram of the mounting bracket of the vibration testing device according to an embodiment of the present invention cooperating with the vehicle sunroof;

[0028] Fig. 9 4 is a perspective view of a mounting bracket of a vibration testing device according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 100. Vibration test device; 101. Vehicle sunroof;

[0031] 1. Environmental warehouse;

[0032] 2. Support system; 20. Support assembly; 21. Support component; 211. Third column; 212. Air spring;

[0033] 3. Mounting bracket; 31. Slideway; 32. Connecting piece;

[0034] 4. Excitation system; 41. First column; 42. Exciter; 421. Excitation rod;

[0035] 5. Anti-torsion assembly; 51. Second column; 52. Anti-torsion tie rod; 521. First section; 522. Second section; 53. Connecting rod. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The vibration testing device 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0041] like Figure 1 As shown, a vibration testing device 100 according to an embodiment of the present invention is used to test a vehicle sunroof 101 and includes an environmental chamber 1 , a support system 2 , a mounting bracket 3 , a vibration excitation system 4 and an anti-torsion component 5 .

[0042] Specifically, refer to the attached Figure 1As shown, the environmental chamber 1 can be used to simulate specific environmental conditions, perform performance tests on the vehicle sunroof 101, and provide a reliable test environment for product development, quality control, and reliability testing of the vehicle sunroof 101. Specifically, the environmental chamber 1 has functions such as temperature regulation, humidity regulation, and light simulation, and can adjust the temperature, humidity, sunlight intensity, and duration in the environmental chamber 1 according to the needs of the user, ensure the stability of the test environment, realize the function of environmental durability, reduce interference factors during the test, and improve the test efficiency and accuracy of the vibration test device 100. Preferably, the environmental chamber 1 is equipped with a monitoring window, which allows the user to observe the situation in the environmental chamber 1 at any time, so that the user can monitor the status of the tested vehicle sunroof 101 in real time.

[0043] Further, see Attachment Figure 1 and attached Figure 8 As shown, the support system 2 is arranged in the environmental chamber 1, the mounting bracket 3 is arranged in the environmental chamber 1, there are two mounting brackets 3, the two mounting brackets 3 are arranged at intervals and are both supported on the support system 2, and the opposite ends of the vehicle sunroof 101 are respectively fixed on the two mounting brackets 3. The support system 2 and the mounting bracket 3 can ensure the installation position of the vehicle sunroof 101 and the stability of the assembly of the vehicle sunroof 101, thereby ensuring the smooth testing of the vibration testing device 100.

[0044] Preferably, refer to the attached Figure 8 As shown, the length direction of the two mounting brackets 3 (refer to the attached Figure 8 The vehicle sunroof 101 is parallel to the vehicle sunroof 101 in the width direction (see the attached figure). Figure 8 The opposite sides of the vehicle sunroof 101 (in the direction b) are respectively fixed on two mounting brackets 3, so that the long sides of the vehicle sunroof 101 are connected to the mounting brackets 3, ensuring the reliability and stability of the connection between the vehicle sunroof 101 and the mounting brackets 3, and ensuring the smooth testing of the vehicle sunroof 101 by the vibration testing device 100.

[0045] Further, see Appendix Figure 1 and attached Figure 4 As shown, the excitation system 4 is arranged in the environmental chamber 1 and connected to the mounting bracket 3. The excitation system 4 is the vibration excitation source of the entire vibration test device 100, which is used to excite the mounting bracket 3 to vibrate, and the magnitude and phase of the excitation force can be controlled. When the excitation signals of the excitation system acting on the two mounting brackets 3 are in phase, the small displacement overall vibration of the vehicle sunroof 101 can be simulated, and the vibration fatigue performance of the vehicle sunroof 101 can be tested; when the excitation signals of the excitation system acting on the two mounting brackets 3 are in anti-phase, the large displacement torsion of the vehicle sunroof 101 can be simulated, and the torsional abnormal sound performance of the vehicle sunroof 101 can be accelerated to deteriorate.

[0046] Further, see the attached Figure 1 and attached Figure 6 As shown, the anti-torsion component 5 is arranged in the environmental chamber 1, and the length direction of the anti-torsion component 5 (refer to the attached Figure 6 The two ends of the vibration testing device 100 (in the direction b) are rotatably connected to the two mounting brackets 3 respectively. The setting of the anti-torsion component 5 can indirectly connect the two mounting brackets 3, play a role in resisting torsional deformation, improve the overall rigidity of the vibration testing device 100, and prevent the mounting bracket 3 from twisting too easily.

[0047] In the existing technology, domestic OEMs usually conduct road durability tests to verify the degradation of vehicle sunroof abnormal noise performance. The cycle of the road durability test is about 3-4 months, which is time-consuming and cannot be used for high and low temperature durability. In addition, it takes about 6 months from the prototype to the SOP (Standard Operating Procedure), which leaves insufficient time for optimization and rectification of the problems, and easily leads to the risk of "sick" vehicles being put on the market due to insufficient verification.

[0048] The present invention can adjust the temperature, humidity, sunlight intensity and duration in the environmental chamber 1 according to the needs of the user through the setting of the environmental chamber 1, and test the performance degradation of the vehicle sunroof 101 under the conditions of set temperature, set sunlight intensity, etc. The size and phase of the excitation force acting on the two mounting brackets 3 can be controlled by the setting of the excitation system 4. When the excitation forces acting on the two mounting brackets 3 are in the same phase, the vibration fatigue performance degradation of the vehicle sunroof 101 under small displacement overall vibration can be tested. When the excitation forces acting on the two mounting brackets 3 are in opposite phases, the torsional noise performance degradation of the vehicle sunroof 101 under large displacement torsion can be tested, so that the vibration testing device 100 can accelerate the decay of the overall vibration durability and torsional noise performance of the vehicle sunroof 101, and more quickly obtain the conclusion on whether the vehicle sunroof 101 can meet the standards, so as to carry out corresponding optimization, which can improve the development efficiency of the vehicle, shorten the development cycle of the vehicle, improve the quality of the vehicle, and ensure the vibration durability and torsional noise performance of the vehicle sunroof 101.

[0049] Furthermore, compared to some prior art methods of cutting a roof of a white body as a mounting base for a vehicle sunroof, the vibration testing device 100 of the present invention can greatly reduce the testing cost of the vehicle sunroof 101 and reduce the vehicle development cost.

[0050] According to the vibration testing device 100 of the embodiment of the present invention, the temperature, humidity, sunshine intensity and duration, etc. in the environmental chamber 1 can be adjusted according to the needs of the user through the setting of the environmental chamber 1, and the size and phase of the excitation force acting on the two mounting brackets 3 can be controlled through the setting of the excitation system 4, so that the vibration fatigue performance degradation of the vehicle sunroof 101 under small displacement overall vibration and the torsional noise performance degradation under large displacement torsion can be tested, so that the vibration testing device 100 can accelerate the decay of the overall vibration durability and torsional noise performance of the vehicle sunroof 101, and more quickly obtain the conclusion on whether the vehicle sunroof 101 can meet the standards, so as to carry out corresponding optimization, which can improve the development efficiency of the vehicle, shorten the development cycle of the vehicle, reduce the testing cost of the vehicle sunroof 101, reduce the development cost of the vehicle, improve the quality of the vehicle, and ensure the vibration durability and torsional noise performance of the vehicle sunroof 101.

[0051] In some embodiments of the present invention, Figure 1 , Attachment Figure 4 and attached Figure 5 As shown, the vibration system 4 includes a first column 41, a vibration exciter 42 and a control system. The first column 41 is arranged in the up and down direction (such as Figure 4 The first column 41 is extended as shown in the figure, the lower end of the first column 41 is fixed on the inner bottom wall of the environmental chamber 1, there are multiple first columns 41, there are multiple vibrators 42 and they are arranged one by one corresponding to the multiple first columns 41, the vibrators 42 are connected to the upper ends of the first columns 41, the vibrators 42 have vibration rods 421 respectively connected to two mounting brackets 3, the first column 41 can support the vibrators 42 from the lower side of the vibrators 42, support the vibrators 42 and prevent the vibrators 42 from moving downward, to ensure that the vibration rods 421 of the multiple vibrators 42 can drive the mounting bracket 3 to move.

[0052] For example, the number of the first pillars 41 may be two, four, six, eight, ten or twelve, and the number of the exciters 42 may be two, four, six, eight, ten or twelve corresponding to the first pillars 41 .

[0053] Furthermore, the control system is connected to the multiple exciters 42 in communication, and the control system can transmit electrical signals to the multiple exciters 42 to control the magnitude and phase of the excitation force of the multiple exciters 42. When the excitation forces of the exciters 42 acting on the two mounting brackets 3 are in phase, the small displacement overall vibration of the vehicle sunroof 101 can be simulated, and the vibration fatigue performance of the vehicle sunroof 101 can be tested; when the excitation forces of the exciters 42 acting on the two mounting brackets 3 are in opposite phases, the large displacement torsion of the vehicle sunroof 101 can be simulated, and the torsional abnormal sound performance of the vehicle sunroof 101 can be accelerated to deteriorate.

[0054] In a further embodiment of the present invention, the number of the exciters 42 is an even number, which is the same as the number of the exciters 42 connected to the two mounting brackets 3, so that both mounting brackets 3 can be subjected to the exciting force and the exciting force on the two mounting brackets 3 is balanced. Figure 1 and attached Figure 4 As shown, there are two exciters 42, and the excitation rods 421 of the two exciters 42 are respectively connected to the two mounting brackets 3, and are respectively used to drive the two mounting brackets 3 to move. This can reduce the production cost of the vibration testing device 100 as much as possible while ensuring the excitation effect of the excitation system on the mounting bracket 3.

[0055] In some embodiments of the present invention, Figure 1 , Attachment Figure 6 and attached Figure 7 As shown, the torsion assembly 5 includes a second column 51, a torsion rod 52 and a connecting rod 53, the second column 51 extends in the up-down direction, the lower end of the second column 51 is fixed on the inner bottom wall of the environmental chamber 1, the torsion rod 52 includes a first section 521 and two second sections 522, the first section 521 is connected to the upper end of the second column 51 and along the arrangement direction of the two mounting brackets 3 (refer to the attached Figure 6 The two second sections 522 are respectively connected to the first section 521 in the length direction (see the attached Figure 6 The second section 522 and the first section 521 are at two ends, and the second section 522 and the first section 521 are at an angle to each other. There are two connecting rods 53, and one end of the two connecting rods 53 is rotatably connected to the ends of the two second sections 522 that are away from the first section 521, and the ends of the two connecting rods 53 that are away from the second section 522 are rotatably connected to the two mounting brackets 3.

[0056] It can be understood that when the excitation force acting on the two mounting brackets 3 is in the same phase, no relative rotation will occur between the two connecting rods 53 and the two mounting brackets 3, and no relative rotation will occur between the connecting rods 53 and the anti-torsion rod 52. The anti-torsion assembly 5 is a whole, which can play a role in resisting torsional deformation, improve the overall rigidity of the vibration testing device 100, and prevent the mounting brackets 3 from twisting too easily; when the excitation force acting on the two mounting brackets 3 is in anti-phase, the two connecting rods 53 and the two mounting brackets 3 begin to rotate relative to each other, and the two connecting rods 53 have different rotation directions relative to the mounting brackets 3, so that the two connecting rods 53 respectively drive the two second sections 522 to rotate in different directions. Since the second section 522 is connected to the first section 521, the first section 521 is twisted, thereby realizing the test function of torsional abnormal sound performance.

[0057] In a further embodiment of the present invention, referring to the attached Figure 6 and attached Figure 7 As shown, there are multiple second columns 51, and the multiple second columns 51 are arranged at intervals along the length direction of the first section 521. The arrangement of the multiple second columns 51 can support the first section 521 from multiple locations along the length direction of the first section 521, ensure the reliable installation of the anti-torsion rod 52, ensure the reliability and stability of the connection between the anti-torsion rod 52 and the mounting bracket 3, and ensure the effect of the anti-torsion rod 52 in resisting torsional deformation. For example, the second columns 51 can be two, three, four or five arranged at intervals along the length direction of the first section 521. In a specific example, an anti-torsion assembly 5 includes two second columns 51, and the two second columns 51 respectively support the first section 521 from both ends of the length direction of the first section 521, which can reduce the production cost of the vibration testing device 100 as much as possible on the basis of ensuring the supporting force of the second columns 51 for the anti-torsion rod 52.

[0058] In some embodiments of the present invention, Figure 1 and attached Figure 6 As shown, there are two anti-torsion components 5, which are respectively connected to the two ends of the mounting bracket 3 in the length direction, and can play a supporting role and resist torsional deformation from the two ends of the mounting bracket 3 in the length direction, further improve the overall rigidity of the vibration testing device 100, and further increase the difficulty of twisting the mounting bracket 3.

[0059] In some embodiments of the present invention, Figure 1 and attached Figure 2 As shown, the support system 2 includes two support assemblies 20, and the two support assemblies 20 are spaced apart along the arrangement direction of the two mounting brackets 3. The two mounting brackets 3 are supported on the two support assemblies 20 respectively, and each support assembly 20 includes a plurality of support components 21. The plurality of support components 21 of the same support assembly 20 are spaced apart along the length direction of the mounting bracket 3. The plurality of support components 21 can act on the mounting bracket 3 at the same time to provide support for the mounting bracket 3 and ensure the stability of the mounting bracket 3, thereby improving the reliability of fixing the vehicle sunroof 101 on the vibration testing device 100.

[0060] For example, the number of support components 21 of each support assembly 20 can be two, three, four, five or six, which can support the mounting bracket 3 at multiple locations spaced apart in the length direction of the mounting bracket 3. Figure 1 and attached Figure 2As shown, each support assembly 20 includes two support parts 21. The two support parts 21 of the same support assembly 20 are respectively located at the two ends of the same mounting bracket 3 in the length direction, and can support the mounting bracket 3 from two locations spaced apart in the length direction of the mounting bracket 3. Under the condition of ensuring the supporting effect of the support assembly 20 on the mounting bracket 3, the production cost of the vibration testing device 100 can be reduced as much as possible.

[0061] In a further embodiment of the present invention, referring to the attached Figure 2 and attached Figure 3 As shown, the supporting component 21 includes a third column 211 and an air spring 212. The third column 211 extends in the up and down directions. The lower end of the third column 211 is fixed on the inner bottom wall of the environmental chamber 1. The air spring 212 is arranged on the third column 211. The upper end of the air spring 212 is connected to the mounting bracket 3, so that the mounting bracket 3 can vibrate under the excitation of the excitation system 4 and can play a vibration reduction role to a certain extent.

[0062] In some embodiments of the present invention, Figure 8 and attached Fig. 9 As shown, the lower sides of the two mounting brackets 3 are provided with a slide groove 31, the slide groove 31 extends along the length direction of the mounting bracket 3, a plurality of connecting members 32 are arranged in the slide groove 31, the vehicle sunroof 101 is fixed to the mounting bracket 3 through the connecting member 32, and the plurality of connecting members 32 extend along the length direction of the slide groove 31 (refer to the attached Fig. 9 The connecting members 32 are movable in the direction a shown in the figure, and the distance between two adjacent connecting members 32 is adjustable. It can be understood that by adjusting the number of connecting members 32, adjusting the distance between two adjacent connecting members 32, and even adjusting the size of the connecting members 32, vehicle sunroofs 101 of different lengths and curvatures can be adapted to achieve the installation of vehicle sunroofs 101 of different sizes on the mounting bracket 3.

[0063] It should be noted that, according to the length and curvature of the vehicle sunroof 101, a connecting member 32 of a corresponding size is selected, the number of connecting members 32 required is determined and the distance between two adjacent connecting members 32 is adjusted. After the adjustment is completed, the mounting bracket 3, the connecting member 32 and the vehicle sunroof 101 are fixedly connected in sequence by fasteners, which can ensure a reliable connection between the vehicle sunroof 101 and the mounting bracket 3, facilitate the installation and disassembly of the vehicle sunroof 101, and reduce the difficulty of using the vibration testing device 100.

[0064] Further, see Attachment Fig. 9As shown, the number of the connecting members 32 is an even number, which is the same as the number of the connecting members 32 connecting the two mounting brackets 3. For example, the total number of the connecting members 32 can be four, six, eight, ten, twelve or fourteen, and the number of the connecting members 32 in the slide slot 31 of each mounting bracket 3 can be two, three, four, five, six or seven. In a specific example, refer to the attached Fig. 9 As shown, six connecting members 32 are arranged in the slide slot 31 of each mounting bracket 3 , and the six connecting members 32 are evenly spaced apart along the length direction of the slide slot 31 . The six connecting members 32 are fixedly connected to the same side of the vehicle sunroof 101 at the same time.

[0065] The present invention further provides a testing method of a vibration testing device 100, wherein the vibration testing device 100 is the above-mentioned vibration testing device 100, and the testing method comprises:

[0066] The vehicle sunroof 101 is fixed on the mounting bracket 3, and the connecting piece 32 of the corresponding size is selected according to the length and curvature of the vehicle sunroof 101, and the number of the required connecting pieces 32 is determined and the distance between two adjacent connecting pieces 32 is adjusted. After the adjustment is completed, the mounting bracket 3, the connecting piece 32 and the vehicle sunroof 101 are fixedly connected in sequence by fasteners, so that the vehicle sunroof 101 to be tested can be fixed on the vibration test device 100;

[0067] Input an excitation signal to the vibration excitation system 4, and transmit the excitation signal to the two vibration exciters 42 through the control system, so that the vibration exciters 42 work, eliminate the sound caused by the loose installation of the vibration test device 100 or other factors, and ensure that the vehicle sunroof 101 is firmly installed;

[0068] According to the test time, adjust the environmental parameters of the environmental chamber 1 and the phase of the excitation signal;

[0069] When the two exciters 42 use the same phase vibration to simulate the small displacement vibration of the entire vehicle sunroof 101, the power spectrum of the vibration endurance is shown in Table 1.

[0070] Table 1 Vibration durability power spectrum

[0071]

[0072] When the two exciters 42 use sinusoidal signals with opposite phases, an amplitude of 5 mm and a frequency of 0.5 Hz to simulate the large displacement torsional working condition of the vehicle sunroof 101, the sinusoidal torsional endurance excitation is shown in Table 2.

[0073] Table 2 Sine torsional endurance excitation

[0074] Vibrator Sinusoidal excitation(mm) Vibrator 1 5sin(πt-90°) Vibrator 2 5sin(πt+90°)

[0075] Specifically, the test time includes a date and a time period, and each time period of each date has a corresponding test mode. The temperature and sunlight intensity, vibration mode and duration in the environmental chamber 1 under each test mode can be operated according to the user's settings, as shown in Table 3. Among them, the vibration mode in Table 3 includes two modes: vibration endurance and sinusoidal excitation. The vibration endurance mode is that the two exciters 42 use the same phase vibration and vibrate according to the power spectrum of the vibration endurance in Table 1. The sinusoidal excitation mode is that the two exciters 42 use the opposite phase of the sine signal with an amplitude of 5 mm and a frequency of 0.5 Hz, and excite according to the sinusoidal torsional endurance excitation in Table 2.

[0076] Table 3 Equivalent method for durability and abnormal noise of vehicle sunroof

[0077]

[0078]

[0079] The durable abnormal noise performance parameters of the vehicle sunroof 101 are measured. After the vehicle sunroof 101 is tested by the durable abnormal noise equivalent method shown in Table 3, the tested vehicle sunroof 101 is evaluated for vibration abnormal noise;

[0080] Determine whether the durable abnormal noise performance parameters of the vehicle sunroof 101 meet the preset performance parameters, and then determine whether the durable abnormal noise performance degradation of the tested vehicle sunroof 101 meets the requirements. Through the testing method of the above-mentioned vibration testing device 100, the degradation of the overall vibration durability performance and torsional abnormal noise performance of the vehicle sunroof 101 can be accelerated, and the conclusion of whether the vehicle sunroof 101 can meet the standards can be obtained more quickly, so as to carry out corresponding optimization, which can improve the vehicle development efficiency, shorten the vehicle development cycle, improve the abnormal noise performance of the vehicle after high mileage, and improve the quality of the vehicle.

[0081] According to the testing method of the vibration testing device 100 of the embodiment of the present invention, the vibration testing device 100 is the above-mentioned vibration testing device 100. By adjusting the environmental parameters of the environmental chamber 1 and the phase of the excitation signal, the decay of the overall vibration durability performance and the torsional abnormal noise performance of the vehicle sunroof 101 can be accelerated, and the conclusion of whether the vehicle sunroof 101 can meet the standards can be obtained more quickly, so as to perform corresponding optimization, which can improve the development efficiency of the vehicle, shorten the development cycle of the vehicle, improve the abnormal noise performance of the vehicle after high mileage, and improve the quality of the vehicle.

[0082] Other structures and operations of the vibration testing device 100 and the testing method of the vibration testing device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0084] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vibration testing device, characterized in that: For testing vehicle sunroofs and includes: Environmental chamber; A support system, wherein the support system is arranged in the environmental chamber; A mounting bracket, the mounting bracket is arranged in the environmental chamber, there are two mounting brackets, the two mounting brackets are arranged at intervals and are both supported on the supporting system, and the opposite ends of the vehicle sunroof are respectively fixed on the two mounting brackets; A vibration excitation system, the vibration excitation system is arranged in the environmental chamber and connected to the mounting bracket, and is used to excite the mounting bracket to vibrate; The anti-torsion component is arranged in the environmental chamber, and the two ends of the anti-torsion component in the length direction are respectively rotatably connected to the two mounting brackets.

2. The vibration testing device according to claim 1, characterized in that: The excitation system comprises: A first column, the first column extending in the up-down direction, and the first column is a plurality; A vibration exciter, wherein the vibration exciter is in multiple numbers and is arranged one-to-one with the multiple first columns, the vibration exciter is connected to the upper end of the first column, and the vibration rods of the multiple vibration exciters are respectively connected to the two mounting brackets; A control system is communicatively connected with the plurality of vibrators.

3. The vibration testing device according to claim 2, characterized in that: The number of the exciters is an even number, which is the same as the number of the exciters connected to the two mounting brackets.

4. The vibration testing device according to claim 1, characterized in that: The anti-torsion component comprises: A second column, the second column extending in the up-down direction; An anti-torsion rod, the anti-torsion rod comprising a first section and two second sections, the first section being connected to the upper end of the second column and extending along the arrangement direction of the two mounting brackets, the two second sections being respectively connected to the two ends of the length direction of the first section, and the second section and the first section are at an angle to each other; There are two connecting rods, one end of the two connecting rods is rotatably connected to the ends of the two second sections facing away from the first section, and the ends of the two connecting rods facing away from the second section are rotatably connected to the two mounting brackets.

5. The vibration testing device according to claim 4, characterized in that: There are a plurality of second columns, and the plurality of second columns are arranged at intervals along the length direction of the first section.

6. The vibration testing device according to claim 1, characterized in that: There are two anti-torsion components, and the two anti-torsion components are respectively connected to the two ends of the mounting bracket in the length direction.

7. The vibration testing device according to claim 1, characterized in that: The support system comprises: Two support assemblies, the two support assemblies are spaced apart along the arrangement direction of the two mounting brackets, the two mounting brackets are respectively supported on the two support assemblies, each of the support assemblies includes a plurality of support components, and the plurality of support components of the same support assembly are spaced apart along the length direction of the mounting bracket.

8. The vibration testing device according to claim 7, characterized in that: The supporting member comprises: A third column, the third column extending in the up-down direction; An air spring is arranged on the third column, and the upper end of the air spring is connected to the mounting bracket.

9. The vibration testing device according to claim 1, characterized in that: The lower sides of the two mounting brackets are each provided with a slide groove, the slide groove extending along the length direction of the mounting bracket, a plurality of connecting members are arranged in the slide groove, the vehicle sunroof is fixed to the mounting bracket via the connecting members, the plurality of connecting members are movable along the length direction of the slide groove, and the distance between two adjacent connecting members is adjustable.

10. A testing method for a vibration testing device, characterized in that: The vibration testing device is a vibration testing device according to any one of claims 1 to 9, and the testing method comprises: Fixing the vehicle sunroof to the mounting bracket; Inputting an excitation signal to the excitation system; According to the test time, adjusting the environmental parameters of the environmental chamber and the phase of the excitation signal; Measuring the durable abnormal noise performance parameters of the vehicle sunroof; Determine whether the durable abnormal noise performance parameters of the vehicle sunroof meet the preset performance parameters.

Images