Modal test apparatus for vehicle steering systems

Abstract

The application discloses a modal test device for a vehicle steering system, the steering system comprising a dashboard pipe beam, a first support and a second support, the first support and the second support being arranged on two sides of the dashboard pipe beam respectively, the modal test device comprising a base, a first test assembly and a second test assembly, the base being formed with a working surface; the first test assembly is configured as two first test assemblies arranged at intervals in a width direction, each first test assembly being movably provided with a first connecting portion relative to the base; the second test assembly is configured as two second test assemblies arranged at intervals in a length direction, each second test assembly being movably provided with a second connecting portion relative to the base. The modal test device according to the application can be flexibly adapted to steering systems of different models and specifications, and the universality and practicality are improved, which is helpful to improve the test efficiency and reduce the test cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a modal test device for a vehicle steering system. BACKGROUND

[0002] With the rapid development of the automobile industry, the performance and comfort of automobiles are increasingly demanded by automobile users. Among them, the performance of the automobile steering system directly affects the control stability of the vehicle and the driving experience of the driver. Therefore, modal analysis and testing of the automobile steering system are essential to evaluate its dynamic performance, which is crucial to improve the overall quality of the automobile and user satisfaction.

[0003] During vehicle driving, the steering system is subjected to various dynamic loads from the road, the engine and the driver's operation, therefore, the modal characteristics need to be fully considered in the selection of the steering system to ensure stability and safety under various working conditions.

[0004] However, due to the complexity and diversity of the structure of the steering system, the traditional modal test device is often difficult to adapt to the test requirements of different models and specifications of the steering system. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to propose a modal test device for a vehicle steering system. The modal test device according to the present application can be flexibly adapted to different models and specifications of the steering system, improving the versatility and practicality, which helps to improve the test efficiency and reduce the test cost.

[0006] The modal test device according to the present application is used for a vehicle steering system, the steering system comprising a dashboard tube beam, a first support and a second support, the first support and the second support are respectively arranged on both sides of the dashboard tube beam, characterized in that the modal test device comprises: a base, the base is formed with a working surface; a first test assembly, the first test assembly is arranged on the working surface, the first test assembly is configured to be arranged at intervals in the width direction, two in number, a first connecting part is movably arranged on each of the first test assemblies relative to the base, the first connecting part is suitable for being connected to the first support or the second support; a second test assembly, the second test assembly is arranged on the working surface, the second test assembly is configured to be arranged at intervals in the length direction, two in number, a second connecting part is movably arranged on each of the second test assemblies relative to the base, the second connecting part is suitable for being connected to the end of the dashboard tube beam; wherein the two first test assemblies and the two second test assemblies define a test space suitable for accommodating the steering system therebetween, at least part of the two first test assemblies can move relative to each other in the width direction to adjust the width of the test space, and at least part of the two second test assemblies can move relative to each other in the length direction to adjust the length of the test space.

[0007] According to the modal test device, the base has a working surface, and the steering system can be installed on the working surface to perform the test. By arranging the first test assemblies on the working surface, the support and positioning of the first support and the second support in the steering system can be achieved. Each first test assembly is provided with a first connecting part movable relative to the base, and the first connecting part can be connected with the first support or the second support to ensure the stability and reliability of the steering system during the test. When the first connecting part is movable relative to the base, the position of the first connecting part can be adjusted, so that the connection requirement of the first test assembly to the steering system can be met when different models and specifications of the steering system are tested, and the versatility of the modal test device is enhanced. Similarly, by arranging the second test assemblies on the working surface, the support and positioning of the end of the instrument panel beam can be achieved. Each second test assembly is provided with a second connecting part movable relative to the base, and the second connecting part can be connected with the end of the instrument panel beam to ensure the stability and reliability of the steering system during the test. When the second connecting part is movable relative to the base, the position of the second connecting part can be adjusted, so that the connection requirement of the second test assembly to the steering system can be met when different models and specifications of the steering system are tested, and the flexibility and adaptability of the modal test device are further enhanced. By adjusting the positions of the first connecting parts and the second connecting parts, the modal test device can be matched with different models and specifications of the steering system, and the versatility of the modal test device is enhanced. In addition, the two first test assemblies and the two second test assemblies define a test space suitable for accommodating the steering system between each other. When the steering system is tested, the steering system is placed in the test space, and the steering system is supported and positioned by the first test assemblies and the second test assemblies, so that the steering system remains stable in the test space. At least part of the two first test assemblies can move relative to each other in the width direction, so that the width of the test space changes to adapt to steering systems of different widths. Similarly, at least part of the two second test assemblies can move relative to each other in the length direction, so that the length of the test space changes to adapt to steering systems of different lengths. The modal test device can flexibly adapt to different models and specifications of the steering system, and the versatility and practicality are improved.

[0008] According to some embodiments of the present application, the first connecting part and the second connecting part are movable relative to the base in the height direction, and / or the first connecting part is rotatable relative to the base.

[0009] According to some embodiments of the present application, the first test assembly comprises a first adjusting part extending in the height direction and connected to the base at one end, and a second adjusting part movably connected to the other end of the first adjusting part in the height direction, and the first connecting part is arranged on the second adjusting part.

[0010] According to some embodiments of the present application, the first test assembly further comprises a third adjusting part, the third adjusting part is arranged between the first adjusting part and the second adjusting part, and the second adjusting part is rotatable relative to the third adjusting part to adjust the angle at which the first connecting part cooperates with the first support or the second support.

[0011] According to some embodiments of the present application, the first test assembly further comprises a first base plate, the first base plate is arranged on the working surface, the first base plate is formed with a first sliding groove extending in the length direction, and at least part of the first adjusting part is movably arranged in the first sliding groove; wherein on each first base plate, the first adjusting part is arranged in two in the length direction, each first adjusting part is correspondingly arranged with one second adjusting part, and the first connecting part is arranged on each second adjusting part.

[0012] According to some embodiments of the present application, one of the first adjusting part and the third adjusting part is formed with a first guide hole extending in the height direction, the other of the first adjusting part and the third adjusting part is provided with a first adjusting member, and the first adjusting member cooperates with the first guide hole; wherein the first adjusting member is movable in the first guide hole to enable the third adjusting part and the first adjusting part to move relative to each other in the height direction.

[0013] According to some embodiments of the present application, one of the second adjusting part and the third adjusting part is formed with a second guide hole extending in an arc shape, the other of the second adjusting part and the third adjusting part is provided with a second adjusting member, and the second adjusting member cooperates with the second guide hole; wherein the second adjusting member is movable in the second guide hole to enable the second adjusting part and the third adjusting part to rotate relative to each other.

[0014] According to some embodiments of the present application, the second test assembly comprises a column, the column is arranged on the working surface and extends in the height direction, the column is formed with a second sliding groove extending in the height direction, and at least part of the second connecting part is movably arranged in the second sliding groove.

[0015] According to some embodiments of the present application, the second test assembly further comprises a second base plate, the second base plate is arranged on the working surface, and the column is connected to the second base plate; an inclined support beam, one end of the inclined support beam is connected to the second base plate, and the other end of the inclined support beam is connected to the column to define a reinforcing cavity between the inclined support beam, the column and the second base plate.

[0016] According to some embodiments of the present application, the second base plate is formed with a weight-reducing hole extending through in the thickness direction.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the modal testing device and steering system according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of a first experimental component according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the first mating part of the first adjustment part of the first test component according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the second mating part of the first adjustment part of the first test component according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the second adjustment part of the first test component according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the third adjustment part of the first test component according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the first base plate of the first test assembly according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of a first experimental component according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the first adjustment part of the first test component according to another embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the second adjustment part of the first test component according to another embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the third adjustment part of the first test component according to another embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the structure of the first base plate of the first test assembly according to another embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of a second test component according to an embodiment of the present invention;

[0032] Figure 14 This is a schematic diagram of the structure of the column of the second test component according to an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the second base plate of the second test assembly according to an embodiment of the present invention;

[0034] Figure 16 This is a schematic diagram of the inclined support beam of the second test component according to an embodiment of the present invention.

[0035] Figure label:

[0036] Modal testing apparatus 1;

[0037] Base 11;

[0038] First test component 12, first adjustment part 121, first mating part 1211, second mating part 1222, second adjustment part 122, third adjustment part 123, first base plate 124, first slide groove 1241, first guide hole 125, second guide hole 126, third guide hole 127;

[0039] Second test component 13, column 131, second slide 1311, second base plate 132, weight reduction hole 1321, inclined support beam 133;

[0040] Steering system 2;

[0041] Instrument panel tube beam 21, first bracket 22, second bracket 23. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In related technologies, due to the complexity and diversity of steering system structures, traditional modal testing equipment is often difficult to adapt to the testing requirements of steering systems of different models and specifications.

[0044] The following is for reference. Figures 1-16 A modal testing apparatus 1 according to an embodiment of the present invention is described.

[0045] The modal testing apparatus 1 according to the present invention is used in a vehicle steering system 2, such asFigure 1 As shown, the steering system 2 includes an instrument panel beam 21, a first bracket 22, and a second bracket 23. The first bracket 22 and the second bracket 23 are respectively disposed on both sides of the instrument panel beam 21. The modal testing device 1 includes a base 11, a first test component 12, and a second test component 13. The base 11 has a working surface. The first test component 12 is disposed on the working surface and is configured as two components spaced apart in the width direction. Each first test component 12 has a first connecting portion that is movably disposed relative to the base 11. The first connecting portion is adapted to connect to the first bracket 22 or the second bracket 23. The second test component 13... The second test assembly 13 is configured as two spaced apart in the length direction, and each second test assembly 13 is provided with a second connecting part that is movably provided relative to the base 11. The second connecting part is adapted to be connected to the end of the instrument panel tube beam 21. The two first test assemblies 12 and the two second test assemblies 13 define a test space suitable for accommodating the steering system 2 between them. At least a portion of the two first test assemblies 12 can move relative to each other in the width direction to adjust the width of the test space, and at least a portion of the two second test assemblies 13 can move relative to each other in the length direction to adjust the length of the test space.

[0046] According to the modal testing apparatus 1 of the present invention, the base 11 has a working surface, and the steering system 2 can be mounted on the working surface for testing. By providing a first test component 12 on the working surface, the first support 22 and the second support 23 in the steering system 2 can be supported and positioned. Each first test component 12 is provided with a first connecting part that can move relative to the base 11. The first connecting part can be connected to the first support 22 or the second support 23 to ensure the stability and reliability of the steering system 2 during the test. When the first connecting part moves relative to the base 11, the position of the first connecting part can be adjusted so that the connection requirements of the first test component 12 to the steering system 2 can be met when testing steering systems 2 of different models and specifications, thus enhancing the versatility of the modal testing apparatus 1. Similarly, by providing a second test component 13 on the working surface, the end of the instrument panel beam 21 can be supported and positioned. Each second test component 13 is provided with a second connecting part that can move relative to the base 11. The second connecting part can be connected to the end of the instrument panel beam 21 to ensure the stability and reliability of the steering system 2 during the test. When the second connecting part moves relative to the base 11, its position can be adjusted so that the connection requirements of the second test component 13 for the steering system 2 can be met when testing different models and specifications of steering systems 2, further enhancing the flexibility and adaptability of the modal testing device 1. By adjusting the positions of the first and second connecting parts, the modal testing device 1 can cooperate with different models and specifications of steering systems 2, enhancing the versatility of the modal testing device 1. In addition, the two first test components 12 and the two second test components 13 define a test space suitable for accommodating the steering system 2. When testing the steering system 2, the steering system 2 is placed in the test space, and the first test components 12 and the second test components 13 support and position the steering system 2, ensuring its stability within the test space. At least a portion of the two first test components 12 can move relative to each other in the width direction, changing the width of the test space to accommodate steering systems 2 of different widths. Similarly, at least a portion of the two second test components 13 can move relative to each other in the length direction, thereby changing the length of the test space to accommodate steering systems 2 of different lengths.

[0047] Therefore, the modal testing device 1 according to the present invention can flexibly adapt to different models and specifications of steering systems 2, improving versatility and practicality, and helping to improve testing efficiency and reduce testing costs.

[0048] It should be noted that, as Figure 1When the steering system 2 shown is installed on the vehicle, the first bracket 22 and the second bracket 23 are distributed on both sides of the instrument panel beam 21 along the length of the vehicle. The first bracket 22 is close to the rear of the vehicle, while the second bracket 23 is close to the front of the vehicle.

[0049] According to some embodiments of the present invention, both the first connecting portion and the second connecting portion can be moved in the height direction relative to the base 11. The mounting positions of the first bracket 22, the second bracket 23, or the end of the instrument panel beam 21 may vary depending on the vehicle model. The first connecting portion and the second connecting portion can be adjusted in the height direction, changing the position height of the first connecting portion and the second connecting portion, allowing the test device to adapt to steering system 2 components of different heights. The modal test device 1 can better match the differences in mounting positions, achieving more precise support and positioning.

[0050] According to some embodiments of the present invention, the first connecting portion is rotatable relative to the base 11. For different vehicle models, the first bracket 22 or the second bracket 23 may have a specific tilt angle or bending shape. The first connecting portion being rotatable relative to the base 11 means that the first connecting portion can rotate relative to a fixed point at a certain height on the test surface. The first connecting portion can rotate relative to a fixed point on itself, or it can rotate relative to a fixed point on the first test assembly 12, to accommodate first brackets 22 or second brackets 23 with different tilt angles or bending shapes, thereby enhancing the versatility of the modal testing device 1.

[0051] According to some embodiments of the present invention, such as Figures 1-12 As shown, the first test assembly 12 includes a first adjustment portion 121 and a second adjustment portion 122. The first adjustment portion 121 extends in the height direction and one end is connected to the base 11; the second adjustment portion 122 is movably connected to the other end of the first adjustment portion 121 in the height direction; wherein, a first connecting portion is disposed on the second adjustment portion 122. By providing the first adjustment portion 121, with one end connected to the base 11 and extending in the height direction, the first adjustment portion 121 can provide support for the second adjustment portion 122. By providing a second adjustment part 122, which is movably connected to the other end of the first adjustment part 121 in the height direction, the second adjustment part 122 can move up and down relative to the first adjustment part 121. Since the first connecting part is provided on the second adjustment part 122, the first connecting part can move with the movement of the second adjustment part 122. Therefore, the first connecting part can be flexibly adjusted in the height direction, thereby meeting the height adjustment requirements of the first connecting part. During the test, the test personnel can accurately adjust the height position of the first connecting part according to the actual height of the steering system 2 components by the relative movement of the first adjustment part 121 and the second adjustment part 122. The operation is simple.

[0052] According to some embodiments of the present invention, such as Figures 1-12 As shown, the first test assembly 12 also includes a third adjustment part 123, which is disposed between the first adjustment part 121 and the second adjustment part 122. The second adjustment part 122 can rotate relative to the third adjustment part 123 to adjust the angle at which the first connecting part engages with the first bracket 22 or the second bracket 23. By providing the third adjustment part 123, the flexibility and adaptability of the modal testing device 1 are further enhanced. Specifically, the third adjustment part 123 is disposed between the first adjustment part 121 and the second adjustment part 122, allowing the second adjustment part 122 to rotate relative to the third adjustment part 123, thereby enabling the first connecting part to adjust the angle at which it engages with the first bracket 22 or the second bracket 23, thus meeting the specific installation requirements of steering system 2 components for different vehicle models. During the test, the test personnel can adjust the angle position of the first connecting part by rotating the second adjusting part 122 relative to the third adjusting part 123 according to the actual installation angle of the first bracket 22 or the second bracket 23. In addition, the third adjusting part 123 can move in the height direction on the first adjusting part 121, thereby driving the second adjusting part 122 to move in the height direction relative to the first adjusting part 121. This makes the first connecting part flexible in both height adjustment and angle adjustment, so as to adapt to more different models of steering systems 2 and enhance the versatility of the modal test device 1.

[0053] According to some embodiments of the present invention, such as Figures 1-12As shown, the first test assembly 12 also includes a first base plate 124, which is disposed on the working surface. The first base plate 124 has a first groove 1241 extending in the length direction. At least a portion of the first adjusting part 121 is movably disposed within the first groove 1241. On each first base plate 124, two first adjusting parts 121 are configured to be arranged in the length direction, and each first adjusting part 121 is correspondingly provided with a second adjusting part 122. Each second adjusting part 122 is provided with a first connecting part. By setting the first base plate 124, which is disposed on the working surface, it serves as a support and fixing foundation for other components (such as the first adjusting part 121), thereby ensuring the stability and reliability of the first test assembly 12. The first base plate 124 has a first groove 1241 extending in the length direction, and at least a portion of the first adjusting part 121 is movably disposed within the first groove 1241, allowing the first adjusting part 121 to move flexibly in the length direction via the first groove 1241. Specifically, on each first base plate 124, two first adjustment parts 121 are arranged in the length direction. When the first test assembly 12 is connected to the first bracket 22 or the second bracket 23 of the steering system 2, the two first adjustment parts 121 are respectively connected to the first bracket 22 or the second bracket 23 on both sides in the length direction. Therefore, by adjusting the position of the two first adjustment parts 121 in the first slide groove 1241, the distance between the two first adjustment parts 121 can be adjusted to easily adapt to first brackets 22 or second brackets 23 of different lengths. In addition, each first adjustment part 121 is provided with a corresponding second adjustment part 122, and each second adjustment part 122 is provided with a first connecting part. Each first connecting part can be adjusted in the height direction by the relative movement of the corresponding second adjustment part 122 and the first adjustment part 121, so that the first test assembly 12 can accurately match the steering system 2 components of different vehicle models.

[0054] According to some embodiments of the present invention, such as Figures 1-12As shown, one of the first adjusting part 121 and the third adjusting part 123 has a first guide hole 125 extending in the height direction, and the other of the first adjusting part 121 and the third adjusting part 123 is provided with a first adjusting member, which cooperates with the first guide hole 125. The first adjusting member can move within the first guide hole 125, so that the third adjusting part 123 and the first adjusting part 121 can move relative to each other in the height direction. The first guide hole 125 provides a space for the first adjusting member to move. When the first adjusting member moves along the first guide hole 125 in the height direction, the third adjusting part 123 and the first adjusting part 121 move relative to each other in the height direction. Through the cooperation of the first guide hole 125 and the first adjusting member, the height position of the third adjusting part 123 can be adjusted more conveniently and accurately, thereby realizing the adjustment of the height of the first connecting part to adapt to the steering system 2 components of different vehicle models.

[0055] According to some embodiments of the present invention, such as Figures 1-12 As shown, one of the second adjustment section 122 and the third adjustment section 123 has an arc-shaped extended second guide hole 126, and the other of the second adjustment section 122 and the third adjustment section 123 is provided with a second adjustment member, which cooperates with the second guide hole 126. The second adjustment member can move within the second guide hole 126, causing the second adjustment section 122 and the third adjustment section 123 to rotate relative to each other. Because the guide hole is arc-shaped, the second adjustment section 122 rotates relative to the third adjustment section 123, thus providing flexibility in steering adjustment. By adjusting the position of the second adjustment member within the second guide hole 126, the tester can easily fine-tune the steering angle, further enhancing the flexibility and operability of the test. The relative rotation between the second adjustment section 122 and the third adjustment section 123 can adjust the angle at which the first connecting part cooperates with the first bracket 22 or the second bracket 23, allowing the first test assembly 12 to adapt to more types of steering system 2 components, reducing test costs and improving test efficiency.

[0056] According to some embodiments of the present invention, such as Figures 1-12 As shown, the first adjusting member includes a first mating portion 1211 and a second mating portion 1222. One end of the first mating portion 1211 is connected to the base 11, and the other end of the first mating portion 1211 forms a third guide hole 127 extending in the width direction. The second mating portion 1222 is disposed on the first mating portion 1211 and is adapted to move along the third guide hole 127 in the width direction. By providing the third guide hole 127 on the first mating portion 1211, the third guide hole 127 allows the second mating portion 1222 to move in the width direction, so that the first connecting portion can be adjusted in the width direction according to actual needs to adapt to different vehicle models or test requirements.

[0057] According to some embodiments of the present invention, such as Figure 1 , Figures 13-16 As shown, the second test component 13 includes a column 131, which is disposed on the working surface and extends in the height direction. The column 131 forms a second groove 1311 extending in the height direction, and at least a portion of the second connecting part is movably disposed within the second groove 1311. By providing the column 131, which is disposed on the working surface and extends in the height direction, the column 131 can provide stable and reliable support for the second connecting part. Furthermore, the second groove 1311 extending in the height direction allows the second connecting part to move along the second groove 1311 in the height direction, thereby adjusting the height of the second connecting part. Test personnel can adjust the height of the second connecting part as needed to adapt to steering system 2 components of different vehicle models, enhancing the versatility of the modal testing device 1.

[0058] According to some embodiments of the present invention, such as Figure 1 , Figures 13-16 As shown, the second test assembly 13 also includes a second base plate 132 and an inclined support beam 133. The second base plate 132 is disposed on the working surface, and the column 131 is connected to the second base plate 132. One end of the inclined support beam 133 is connected to the second base plate 132, and the other end is connected to the column 131, thereby defining a reinforcing cavity between the inclined support beam 133, the column 131, and the second base plate 132. By disposing the second base plate 132 on the working surface, the second base plate 132 provides a stable support foundation for the column 131, enhancing the overall stability of the second test assembly 13. At the same time, the connection between the column 131 and the second base plate 132 further strengthens the structure, enabling the second test assembly 13 to withstand various complex external forces. By setting the inclined support beam 133, with one end connected to the second base plate 132 and the other end connected to the column 131, the inclined support beam 133 can effectively disperse the pressure borne by the column 131, thereby reducing the possibility of structural deformation. Furthermore, the interaction between the inclined support beam 133, the column 131, and the second base plate 132 together forms a reinforced cavity. This reinforced cavity not only provides additional support and stability but also helps reduce vibration, improving the accuracy and reliability of the test.

[0059] According to some embodiments of the present invention, such as Figure 1 , Figures 13-16As shown, the second base plate 132 has a weight-reducing hole 1321 extending through the thickness direction. By providing the weight-reducing hole 1321, the weight of the second base plate 132 can be reduced while maintaining its structural strength and rigidity. The presence of the weight-reducing hole 1321 can effectively reduce the weight of the second test assembly 13, making it easier for the second test assembly 13 to move on the working surface, thereby improving the flexibility and convenience of the test.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0062] In the description of this invention, "a plurality of" means two or more.

[0063] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0064] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A modal testing apparatus for a vehicle steering system, the steering system (2) comprising an instrument panel beam (21), a first bracket (22), and a second bracket (23), the first bracket (22) and the second bracket (23) being respectively disposed on both sides of the instrument panel beam (21), characterized in that, The modal testing apparatus includes: A substrate (11) having a working surface formed thereon; First test component (12), the first test component (12) is disposed on the working surface, the first test component (12) is constructed as two spaced apart in the width direction, each first test component (12) is movably provided with a first connecting part relative to the base (11), the first connecting part is adapted to be connected to the first support (22) or the second support (23). The second test assembly (13) is disposed on the working surface. The second test assembly (13) is configured as two units spaced apart along its length. Each second test assembly (13) has a second connecting portion movably disposed relative to the base (11). The second connecting portion is adapted to connect to the end of the instrument panel beam (21). The two first test components (12) and the two second test components (13) define a test space between each other suitable for accommodating the steering system (2). At least a portion of the two first test components (12) can move relative to each other in the width direction to adjust the width of the test space, and at least a portion of the two second test components (13) can move relative to each other in the length direction to adjust the length of the test space.

2. The modal testing apparatus according to claim 1, characterized in that, Both the first connecting part and the second connecting part can move relative to the base (11) in the height direction, and / or the first connecting part can rotate relative to the base (11).

3. The modal testing apparatus according to claim 2, characterized in that, The first test component (12) includes: A first adjustment part (121) extends in the height direction and one end is connected to the base (11). The second adjustment part (122) is movably connected to the other end of the first adjustment part (121) in the height direction; wherein the first connection part is disposed on the second adjustment part (122).

4. The modal testing apparatus according to claim 3, characterized in that, The first test component (12) also includes: The third adjustment part (123) is disposed between the first adjustment part (121) and the second adjustment part (122), and the second adjustment part (122) can rotate relative to the third adjustment part (123) to adjust the angle of the first connecting part cooperating with the first bracket (22) or the second bracket (23).

5. The modal testing apparatus according to claim 3, characterized in that, The first test component (12) also includes: A first base plate (124) is disposed on the working surface, and the first base plate (124) has a first groove (1241) extending in the length direction. At least a portion of the first adjusting part (121) is movably disposed within the first groove (1241). On each of the first base plates (124), the first adjustment part (121) is configured as two arranged in the length direction, and each of the first adjustment parts (121) is provided with a corresponding second adjustment part (122), and each of the second adjustment parts (122) is provided with the first connecting part.

6. The modal testing apparatus according to claim 4, characterized in that, One of the first adjusting part (121) and the third adjusting part (123) is provided with a first guide hole (125) extending in the height direction, and the other of the first adjusting part (121) and the third adjusting part (123) is provided with a first adjusting member, which cooperates with the first guide hole (125); wherein The first adjusting member can move within the first guide hole (125) so that the third adjusting part (123) moves relative to the first adjusting part (121) in the height direction.

7. The modal testing apparatus according to claim 6, characterized in that, One of the second adjusting part (122) and the third adjusting part (123) has an arc-shaped extended second guide hole (126), and the other of the second adjusting part (122) and the third adjusting part (123) is provided with a second adjusting member, which cooperates with the second guide hole (126); wherein The second adjusting member can move within the second guide hole (126) so that the second adjusting part (122) rotates relative to the third adjusting part (123).

8. The modal testing apparatus according to claim 2, characterized in that, The second test component (13) includes: A column (131) is disposed on the working surface and extends in the height direction. The column (131) forms a second groove (1311) extending in the height direction. At least part of the second connecting portion is movably disposed in the second groove (1311).

9. The modal testing apparatus according to claim 8, characterized in that, The second test component (13) also includes: The second base plate (132) is disposed on the working surface, and the column (131) is connected to the second base plate (132). An inclined support beam (133) is provided, one end of which is connected to the second base plate (132) and the other end of which is connected to the column (131) to define a reinforcing cavity between the inclined support beam (133), the column (131) and the second base plate (132).

10. The modal testing apparatus according to claim 9, characterized in that, The second base plate (132) has a weight-reducing hole (1321) that extends through the thickness direction.

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