A device for testing the vibration of an automobile electronic product

Abstract

The utility model relates to a kind of automobile electronic product vibration testing devices, including base, first vibration table is installed on base, first vibration table is installed on first vibration table, second vibration table is used to support automobile electronic product, first slot is opened in first vibration table.The utility model is provided with first vibration table, second vibration table, first slot, first spring, servo motor, through slot, baffle rod and first limit post, second vibration table and first limit post fixed connection constitute integrated structure, by starting servo motor to drive baffle rod periodic rotation, baffle rod promotes first limit post to move horizontally along through slot, drive second vibration table to linearly move inside first slot, when baffle rod reaches limit position F1, baffle rod and first limit post separate, make second vibration table reset under the first spring elastic force, to realize horizontal reverse vibration, simulate inertia force when urgent acceleration or emergency brake, improve electronic product test precision.

Description

Technical Field

[0001] This utility model belongs to the field of automotive production testing technology, and in particular relates to a vibration testing device for automotive electronic products. Background Technology

[0002] The automotive electronics vibration testing device is a specialized device used to simulate the vibration environment during vehicle operation and to conduct reliability testing on automotive electronic products such as in-vehicle navigation, in-vehicle audio-visual systems, electronic control units, and sensors. By reproducing the vibration characteristics of different road conditions (such as bumpy roads, gravel roads, and highways), the vibration testing device evaluates the structural stability, electrical performance consistency, and service life of products under long-term vibration environments, ensuring that the products meet the vibration testing standards of the automotive industry.

[0003] The vibration testing equipment for automotive electronic products mainly consists of two modules: a vibration excitation module, which typically uses an electric vibration table. The vibration is generated by a vibration motor, which drives the vibration table to vibrate. The vibration frequency is controlled by the motor output to meet the testing requirements of different automotive electronic products. The second module is a clamping and fixing module, which uses customized clamps and quick-locking mechanisms to adapt to products of different sizes and shapes. This ensures that there is no relative displacement of the product during the test. At the same time, the clamps adopt an elastic buffer design to avoid interference with the test results caused by the vibration of the clamps themselves.

[0004] Basic vibration testing equipment for automotive electronics typically only provides vertical excitation, subjecting the electronic product to forces only in the vertical direction. However, the actual driving environment of a car is far more complex. During driving, a car not only experiences vertical vibrations due to road bumps, but also horizontal vibrations due to various factors: the inertial forces during rapid acceleration or braking can also cause horizontal vibration responses. These horizontal vibrations can lead to loose product interfaces, wire wear, or displacement of internal components, making them an indispensable dimension in reliability testing and thus affecting the accuracy of automotive electronics testing. Utility Model Content

[0005] This utility model provides a vibration testing device for automotive electronic products, aiming to solve the problem that the single vibration direction of existing automotive electronic product vibration testing devices affects the accuracy of electronic product testing.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A vibration testing device for automotive electronic products includes a base, a first vibration table mounted on the base, a second vibration table mounted on the first vibration table, the second vibration table being used to support the automotive electronic product, a first slot being opened on the first vibration table for sliding of the second vibration table, a servo motor being mounted on the first vibration table, a stop bar being installed at the output end of the servo motor, a first limiting post being mounted on the second vibration table, a through groove being opened on the first vibration table for sliding of the first limiting post, a plurality of first springs being linearly mounted on the second vibration table, the other ends of the first springs being fixedly connected to the first vibration table, when the servo motor drives the stop bar to rotate, the stop bar drives the first limiting post and the second vibration table to move linearly along the through groove, a vibration assembly being mounted on the first vibration table for driving the first vibration table to vibrate vertically.

[0007] The beneficial effects of this utility model are as follows: By setting a first vibration table, a second vibration table, a first slot, a first spring, a servo motor, a through slot, a stop bar, and a first limiting post, the second vibration table and the first limiting post are fixedly connected to form an integrated structure. By starting the servo motor, the stop bar is driven to rotate periodically, causing the stop bar to push the first limiting post to move horizontally along the through slot, which in turn causes the second vibration table to move linearly inside the first slot. When the stop bar reaches the limit position F1, the stop bar and the first limiting post separate, allowing the second vibration table to reset under the action of the first spring force, thereby realizing horizontal reverse vibration, simulating the inertial force during rapid acceleration or braking, and improving the testing accuracy of electronic products.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the first vibration table has several insertion holes, and several second limiting posts are coaxially mounted on the first spring. One end of each second limiting post is fixedly connected to the second vibration table, and the other end of each second limiting post is inserted into the middle of the insertion hole. The second limiting posts provide support and limit the movement, thereby improving the stability of the horizontal movement of the second vibration table.

[0010] Furthermore, several rollers are rotatably connected to the second vibration table. When the second vibration table moves horizontally, the rollers roll at the inner bottom of the first groove. The rolling of the rollers reduces resistance and improves the movement stability of the second vibration table.

[0011] Furthermore, a third slot is provided on the first vibration table, which is connected to the first slot, and the third slot allows the stop bar to rotate.

[0012] Furthermore, a cover plate is installed inside the third slot, and an outer frame is fixedly connected to the cover plate. A support block is fixedly connected to the first vibration table. The support block and the outer frame are used to support the cover plate, which improves the safety of the lever rotation.

[0013] Furthermore, the vibration assembly includes a vibration motor mounted at the bottom of the base, dampers mounted at the four corners of the base, and second springs coaxially mounted on the dampers. The bottom ends of the second springs are fixedly connected to the base, and when the vibration motor is started, it drives the first vibration table and the second vibration table to vibrate vertically.

[0014] Furthermore, a clamping assembly is provided on the second vibration table, which includes two first supports mounted on the second vibration table, two second supports mounted on the first supports, and a corner bracket mounted on the second supports.

[0015] Furthermore, the corner brackets are all right-angled to support the four corners of the automotive electronics products. Both the second bracket and the corner brackets are equipped with tightening bolts, which are used to fix the second bracket and the corner brackets respectively.

[0016] The beneficial effects of adopting the above-mentioned further solution are as follows: by setting rollers, a second limiting post, and a socket, the second limiting post is inserted into the socket to limit the lateral displacement of the second vibration table, and the rollers roll at the bottom of the second vibration table to reduce resistance and improve the stability of the horizontal vibration reset of the second vibration table; by setting a third slot, a support block, a socket, and a cover plate, the third slot allows the stop rod to rotate, avoiding collision between the stop rod and the bottom of the second vibration table, the cover plate is engaged inside the third slot, and the support block and outer frame support the limiting socket to close the third slot, thereby improving the safety of the stop rod rotation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic cross-sectional view of the first vibration table of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the second vibration table structure of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the second vibration table structure of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the first vibration table structure of this utility model; Figure 7 This is a schematic cross-sectional view of the first vibration table of this utility model. Figure 2 .

[0018] The attached diagram lists the components represented by each number as follows: 1. Base; 2. First vibration table; 3. Second vibration table; 4. First slot; 5. First spring; 6. Second spring; 7. Damper; 8. Vibration motor; 9. Servo motor; 10. Through slot; 11. Stop bar; 12. First limiting post; 13. Roller; 14. Second limiting post; 15. First bracket; 16. Second bracket; 17. Angle bracket; 18. Third slot; 19. Support block; 20. Insertion hole; 21. Cover plate; 22. Outer frame. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] like Figure 1-6As shown, the embodiment provided by this utility model is a vibration testing device for automotive electronic products, including a base 1, a first vibration table 2 mounted on the base 1, a second vibration table 3 mounted on the first vibration table 2, a plurality of threaded holes on the second vibration table 3 for mounting brackets, the second vibration table 3 for supporting automotive electronic products, a first slot 4 on the first vibration table 2 for sliding of the second vibration table 3, a servo motor 9 mounted on the first vibration table 2 by bolts, and a stop bar 11 mounted on the output end of the servo motor 9 by a coupling. A first limiting post 12 is welded onto the second vibration table 3. A through groove 10 is formed on the first vibration table 2, passing through the first vibration table 2 and allowing the first limiting post 12 to slide. Several first springs 5 ​​are linearly mounted on the second vibration table 3, with the other end of each first spring 5 fixedly connected to the first vibration table 2. A vibration assembly is mounted on the first vibration table 2 to drive the first vibration table 2 to vibrate vertically. The vibration assembly includes a vibration motor 8 mounted on the bottom of the base 1, dampers 7 mounted at the four corners of the base 1, and a damper 7 coaxially mounted on the base 1. The second spring 6 on the damper 7 has its bottom end fixedly connected to the base 1. When the vibration motor 8 is started, it drives the first vibration table 2 and the second vibration table 3 to vibrate vertically. When the servo motor 9 drives the stop rod 11 to rotate, the stop rod 11 drives the first limiting post 12 and the second vibration table 3 to move linearly along the through groove 10. The first vibration table 2, the second vibration table 3, the first groove 4, the first spring 5, the servo motor 9, the through groove 10, the stop rod 11, and the first limiting post 12 are provided. The second vibration table 3 and the first limiting post 12 are fixedly connected to form an integral structure. The structure involves starting the servo motor 9 to drive the stop lever 11 to rotate periodically, causing the stop lever 11 to push the first limiting post 12 to move horizontally along the through groove 10, which in turn drives the second vibration table 3 to move linearly inside the first slot 4, causing the first spring 5 to stretch and store energy. When the stop lever 11 reaches the limit position F1, the stop lever 11 and the first limiting post 12 separate, causing the second vibration table 3 to reset under the elastic force of the first spring 5. The second vibration table 3 is then pulled horizontally by the first spring 5 to achieve horizontal reverse vibration, simulating the inertial force during rapid acceleration or braking, thereby improving the testing accuracy of electronic products.

[0023] The first vibration table 2 has several insertion holes 20. Several second limiting posts 14 are coaxially mounted on the first spring 5. One end of each second limiting post 14 is fixedly connected to the second vibration table 3, and the other end of each second limiting post 14 is inserted into the middle of the insertion hole 20. The second limiting post 14 provides support and limitation. Several rollers 13 are rotatably connected to the second vibration table 3. When the second vibration table 3 moves horizontally, the rollers 13 roll at the bottom of the first slot 4. By setting up rollers 13, second limiting posts 14 and insertion holes 20, the second limiting posts 14 are inserted into the insertion holes 20 to limit the lateral displacement of the second vibration table 3. The rollers 13 rolling at the bottom of the second vibration table 3 reduce resistance and improve the stability of the horizontal movement of the second vibration table 3.

[0024] In practical use, steel balls can be used to replace roller 13. The bottom end of the second vibration table 3 is provided with several grooves for the steel balls to be engaged, so that the steel balls are supported at the bottom of the first groove 4. The surface of the steel balls is smooth. By rolling the steel balls at the bottom of the first groove 4, the frictional resistance of the second vibration table 3 sliding inside the first groove 4 is reduced, frictional loss is reduced, and the stability of the second vibration table 3 during reset and movement is improved.

[0025] The first vibration table 2 has a third slot 18, which is connected to the first slot 4. The third slot 18 allows the stop rod 11 to rotate. A cover plate 21 is installed inside the third slot 18, and an outer frame 22 is fixedly connected to the cover plate 21. The outer frame 22 is arc-shaped and is snapped into the inside of the third slot 18. The outer frame 22 is supported and limited by its own elasticity. A support block 19 is fixedly connected to the first vibration table 2. The support block 19 and the outer frame 22 are used to support the cover plate 21. By setting the third slot 18, support block 19, insertion hole 20 and cover plate 21, the third slot 18 allows the stop rod 11 to rotate, avoiding collision between the stop rod 11 and the bottom of the second vibration table 3. The cover plate 21 is snapped into the inside of the third slot 18, and the support block 19 and the outer frame 22 support and limit the insertion hole 20, thereby closing the third slot 18 and improving the safety of the stop rod 11 rotation.

[0026] The second vibration table 3 is equipped with a clamping assembly, which includes two first brackets 15 mounted on the second vibration table 3, two second brackets 16 mounted on the first brackets 15, and corner brackets 17 mounted on the second brackets 16. The corner brackets 17 are all right-angled and used to support the four corners of the automotive electronic products. The second brackets 16 and the corner brackets 17 are all equipped with tightening bolts, which are used to fix the second brackets 16 and the corner brackets 17 respectively, thereby improving the adaptability and convenience of installing automotive electronic products.

[0027] Working Principle: When using this automotive electronic product vibration testing device, the operator first connects an external power supply, then places the automotive electronic product on the second vibration table 3. Next, the positions of the second bracket 16 and the corner bracket 17 are adjusted sequentially and then tightened. Tightening and loosening the bolts secures the second bracket 16 and the corner bracket 17, improving the adaptability and convenience of electronic product installation. Then, the vibration motor 8 is started, driving the first vibration table 2 to vibrate vertically. The first vibration table 2 and the second vibration table 3 transmit vibration to the automotive electronic product through contact transmission. Then, by starting the servo motor 9, the stop lever 11 rotates periodically, causing the stop lever 11 to push the first limit post 12 to move horizontally along the through groove 10, driving the second vibration table 3 to move linearly inside the first slot 4. When the stop lever 11 reaches its limit position F1, the stop lever 11 separates from the first limit post 12, causing the second vibration table 3 to reset under the elastic force of the first spring 5, thus achieving horizontal reverse vibration, simulating the inertial force during rapid acceleration or braking, and improving the testing accuracy of the electronic product.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0029] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0030] It should be understood that the disclosed apparatus can be implemented in other ways, as illustrated in the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of the units described above may be implemented in other ways in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

Claims

1. A vibration testing device for automotive electronic products, characterized in that: The system includes a base (1), a first vibration table (2) mounted on the base (1), a second vibration table (3) mounted on the first vibration table (2), the second vibration table (3) being used to support automotive electronic products, a first slot (4) opened on the first vibration table (2) for the second vibration table (3) to slide, a servo motor (9) mounted on the first vibration table (2), a stop bar (11) mounted on the output end of the servo motor (9), a first limit post (12) mounted on the second vibration table (3), and the first vibration table (2) having a stop bar (11) mounted on the second vibration table (3). A through groove (10) is provided for the sliding of the first limiting post (12). Several first springs (5) are linearly installed on the second vibration table (3). The other end of each first spring (5) is fixedly connected to the first vibration table (2). When the servo motor (9) drives the stop bar (11) to rotate, the stop bar (11) drives the first limiting post (12) and the second vibration table (3) to move linearly along the through groove (10). A vibration assembly is installed on the first vibration table (2). The vibration assembly is used to drive the first vibration table (2) to vibrate vertically.

2. The vibration testing device for automotive electronic products according to claim 1, characterized in that: The first vibration table (2) has several insertion holes (20), and several second limiting posts (14) are coaxially installed on the first spring (5). One end of the second limiting post (14) is fixedly connected to the second vibration table (3), and the other end of the second limiting post (14) is inserted into the middle of the insertion hole (20).

3. The vibration testing device for automotive electronic products according to claim 2, characterized in that: Several rollers (13) are rotatably connected to the second vibration table (3). When the second vibration table (3) moves horizontally, the rollers (13) roll at the bottom of the first slot (4).

4. The vibration testing device for automotive electronic products according to claim 2, characterized in that: The first vibration table (2) has a third slot (18) which is connected to the first slot (4). The third slot (18) allows the stop bar (11) to rotate.

5. The vibration testing device for automotive electronic products according to claim 4, characterized in that: The third slot (18) has a cover plate (21) installed inside. An outer frame (22) is fixedly connected to the cover plate (21). A support block (19) is fixedly connected to the first vibration table (2). The support block (19) and the outer frame (22) are used to support the cover plate (21).

6. The vibration testing device for automotive electronic products according to claim 1, characterized in that: The vibration assembly includes a vibration motor (8) installed at the bottom of the base (1), dampers (7) installed at the four corners of the base (1), and a second spring (6) coaxially installed on the damper (7). The bottom of the second spring (6) is fixedly connected to the base (1) respectively. When the vibration motor (8) is started, it drives the first vibration table (2) and the second vibration table (3) to vibrate vertically.

7. The vibration testing device for automotive electronic products according to claim 1, characterized in that: The second vibration table (3) is provided with a clamping assembly, which includes two first supports (15) installed on the second vibration table (3), two second supports (16) installed on the first supports (15), and a corner bracket (17) installed on the second supports (16).

8. The vibration testing device for automotive electronic products according to claim 7, characterized in that: The corner brackets (17) are all right-angled and used to support the four corners of the automotive electronics products. The second bracket (16) and the corner brackets (17) are both equipped with tightening bolts, which are used to fix the second bracket (16) and the corner brackets (17) respectively.

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