A vibration testing device

Abstract

This utility model discloses a vibration testing device, including a vibration table and a fixture. The vibration table has multiple evenly distributed threaded holes and at least two guide grooves. The fixture has at least two screws that mate with the threaded holes, and a guide rail that mates with the guide grooves. The cooperation between the guide grooves and the guide rails increases the contact area between the fixture and the vibration table, improving the stability of the fixture assembled onto the worktable and preventing loosening of the fixture and vibration table due to long-term vibration, thus ensuring the accuracy of the vibration test results.

Description

Technical Field

[0001] This utility model relates to the field of vibration testing technology, and in particular to a vibration testing device. Background Technology

[0002] Power banks, as common portable power sources in people's daily lives, have permeated every corner of life due to their convenience. To ensure that power banks can reliably provide convenient service, manufacturers need to conduct random quality tests on power banks before they leave the factory.

[0003] In the quality inspection process, there is a type of test called vibration testing. Its purpose is to simulate various regular or irregular vibrations experienced by the power bank during transportation or use, in order to detect vulnerable areas at the connection points between the power bank's outer shell and internal components. It also aims to expose areas where the circuit board solder joints are unstable by simulating various vibration conditions. The test results are used to further improve the power bank's manufacturing process until sampled products pass the vibration test. In actual vibration testing, a fixture is typically installed on a vibration machine, the power bank is then fixed to the fixture, and finally the vibration test is started. However, existing fixtures are generally fixed to the vibration machine with simple fasteners. This connection method is extremely susceptible to vibration, causing the fixture to loosen, which introduces significant errors into the test results and reduces the accuracy of the vibration test. Utility Model Content

[0004] To overcome the technical problem that existing surgical magnifying glasses cannot cover the user's face, this utility model provides a vibration testing device.

[0005] To achieve the above objectives, this utility model proposes a vibration testing device, comprising: a vibration table, wherein the vibration table is provided with a plurality of evenly distributed threaded holes and at least two guide grooves;

[0006] The fixture is provided with screws that mate with the threaded hole, and there are at least two screws; the fixture is also provided with a guide rail that mates with the guide groove.

[0007] Furthermore, one end of the guide groove is an open end and the other end is a closed end, with the closed end fitting against the end face of the guide rail.

[0008] Furthermore, the closed end is an inclined surface, the end face of the guide rail is a slope that abuts against the inclined surface, and a magnetic block with an adsorption effect on the guide rail is provided on the inclined surface.

[0009] Furthermore, the clamp has a handle on the side away from the closed end, and the closed end has a through hole corresponding to the position of the magnetic block, the through hole penetrating the magnetic block.

[0010] Furthermore, the guide rail has a plurality of evenly spaced balls arranged along its length on the side near the bottom of the guide groove, and the bottom of the guide groove has a sliding groove that matches the ball's movement trajectory, and the ball makes rolling contact with the sliding groove.

[0011] Furthermore, the fixture includes a base plate and a positioning groove. The base plate is provided with a screw that is threadedly connected to the threaded hole, and the positioning groove is provided on the base plate for placing the power bank.

[0012] Furthermore, the base plate is provided with no less than two positioning grooves, and the multiple positioning grooves are evenly distributed on the base plate at intervals.

[0013] Furthermore, the bottom surface of the positioning groove is fixedly connected to the base plate, and the top surface is an open surface. The two opposite side walls of the positioning groove are provided with fixing components for fixing the power bank in the positioning groove.

[0014] Furthermore, the fixing component includes a wedge and a boss, and the side wall of the positioning groove is provided with an opening for the wedge to pass through, and the wedge and the boss are elastically connected.

[0015] Furthermore, the wedge block is provided with a guide rod passing through the side of the boss on the side away from the positioning groove. The guide rod is provided with a compression spring. One end of the compression spring contacts the side of the wedge block, and the other end contacts the side of the boss. One end of the guide rod is fixedly connected to the wedge block, and the other end passes through the side of the boss and is provided with a disc that can pull the wedge block through the opening.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) By using the guide groove and guide rail, the fixture can be quickly positioned in the designated area on the vibration table. The fixture is then fixed to the vibration table with screws, which improves the efficiency of fixture installation.

[0018] (2) Due to the cooperation between the guide groove and the guide rail, the fixture and the vibration table are closely fitted together, which increases the interaction area between the fixture and the vibration table, improves the stability of the fixture and vibration table assembly, and reduces the adverse effects of vibration on the tightness of the fixture and vibration table assembly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the vibration table of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a first-view structural schematic diagram of the clamp of this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a structural schematic diagram of the fixture of this utility model from a second perspective.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Vibration table;

[0028] 11. Threaded hole; 12. Guide groove; 121. Sliding groove; 122. Bevel; 123. Magnetic block; 124. Through hole;

[0029] 2. Fixtures;

[0030] 21. Base plate; 211. Screw; 212. Handle; 22. Positioning groove; 221. Boss; 23. Fixing component; 231. Wedge; 232. Guide rod; 233. Compression spring; 234. Disc; 24. Guide rail; 241. Ball bearing; 242. Slope. Detailed Implementation

[0031] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0032] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1-2As shown in the diagram, this utility model proposes a vibration testing device, including a vibration table 1 and a fixture 2. The vibration table 1 has a plurality of evenly distributed threaded holes 11 and at least two guide grooves 12. The fixture 2 has at least two screws 211 that mate with the threaded holes 11, and a guide rail 24 that mates with the guide grooves 12. The vibration table 1, as the source of simulated vibration, is generally equipped with an electromagnetic exciter. The electromagnetic exciter can generate different vibration modes such as sine waves and random waves to simulate the high-frequency vibrations of a power bank during transportation or when it is held in hand, in order to test the stability of the connection between the power bank's outer shell and internal components. The power bank sample is fixedly connected to the vibration table 1 via the fixture 2, and the vibration on the vibration table 1 is transmitted to the power bank in real time.

[0034] In this embodiment, the cross-sectional shapes of the guide rail 24 and the guide groove 12 can be dovetail-shaped, T-shaped, or other shapes that restrict the degree of freedom between the clamp 2 and the vibration table 1. Through the cooperation of the guide groove 12 and the guide rail 24, the only degree of freedom between the clamp 2 and the vibration table 1—the assembly space of the guide rail 24 and the guide groove 12—is reduced. This allows for quick positioning of the clamp 2 in a designated area on the vibration table 1, followed by fixing the clamp 2 to the vibration table 1 with screws 211, reducing the degree of freedom between the clamp 2 and the vibration table 1 to zero and improving the efficiency of clamp installation. The cooperation of the guide groove 12 and the guide rail 24 ensures that the clamp 2 and the vibration table 1 fit together, increasing the interaction area between them, improving the stability of the assembly, and reducing the adverse effects of vibration on the tightness of the clamp 2 and the vibration table 1 assembly.

[0035] like Figure 2-3 As shown, one end of the guide groove 12 is an open end, and the other end is a closed end, with the closed end fitting against the end face of the guide rail 24. The fixture 2 can be quickly positioned on the vibration table 1 by the cooperation between the guide rail 24 and the guide groove 12. Due to the contact between the closed end and the end face of the guide rail 24, the fixture 2 can be quickly positioned on the guide groove 12, effectively improving the efficiency of assembling the fixture 2 onto the vibration table 1.

[0036] In some embodiments, the closed end is an inclined surface 122, and the end face of the guide rail 24 is a slope 242 that abuts against the inclined surface 122. A magnetic block 123 with an adsorption effect on the guide rail 24 is provided on the inclined surface 122. The inclined surface 122 facilitates the installation of a larger magnetic block 123, thereby enhancing the adsorption effect of the magnetic block 123 on the guide rail 24. When the guide rail 24 passes through the open end of the guide groove 12 and slides along the length of the guide groove 12 until the slope 242 abuts against the inclined surface 122, the guide rail 24 is fixed within the guide groove 12 under the adsorption effect of the magnetic block 123. The clamp 2 can thus be initially fixed in position on the vibration table 1, preventing the position of the clamp 2 from shifting along the length of the slide groove 121 before the screws 211 are installed, thus preparing for further tightening of the clamp 2 on the vibration table 1 later.

[0037] In some embodiments, the clamp 2 has a handle 212 on the side away from the closed end, and a through hole 124 is provided at the closed end corresponding to the position of the magnet 123, through which the magnet 123 passes. The user can apply external force to the clamp 2 by manipulating the handle 212, causing the clamp 2 to slide into or out of the vibration table 1 along the length of the guide groove 12. When the slope 242 of the guide rail 24 is attracted by the magnet 123, it may not be easy to pull the clamp 2 out of the groove 121 by pulling the handle 212 with external force. At this time, a tool (such as a thin rod) can be used to push the guide rail 24 directly through the through hole 124, so that the clamp 2 slides out of the guide groove 12. This effectively improves the disassembly efficiency of the clamp 2.

[0038] like Figure 3 , Figure 6 As shown, in some embodiments, the guide rail 24 has a plurality of evenly spaced balls 241 arranged along its length on the side near the bottom surface of the guide groove 12. The bottom surface of the guide groove 12 has a groove 121 corresponding to the moving trajectory of the balls 241, and the balls 241 roll in contact with the groove 121. The balls 241 significantly reduce the friction between the guide rail 24 and the guide groove 12, preventing premature vibration gaps from forming between them due to long-term wear. The groove 121 increases the contact area between the balls 241 and the groove 121, reduces the pressure between them, prevents premature wear of the balls 241, and improves their service life.

[0039] like Figure 4-5 As shown in the figure, in this embodiment, the fixture 2 includes a base plate 21 and a positioning groove 22. The base plate 21 is provided with a screw 211 that is threadedly connected to the threaded hole 11, and the base plate 21 is provided with a positioning groove 22 for placing a power bank. When the vibration table 1 is working, the vibration will be transmitted to the power bank in the positioning groove 22 in real time through the base plate 21.

[0040] In some embodiments, the base plate 21 is provided with no fewer than two positioning slots 22, and the multiple positioning slots 22 are evenly distributed on the base plate 21 at intervals. Since there are more than a number of positioning slots 22 on the fixture 2, the number of power banks that can be tested at one time can be increased, effectively improving the efficiency of vibration testing.

[0041] In some embodiments, the bottom surface of the positioning groove 22 is fixedly connected to the base plate 21, and the top surface is an open surface. Fixing components 23 for fixing the power bank within the positioning groove 22 are provided on opposite side walls of the positioning groove 22. After the power bank passes through the open surface and is placed inside the positioning groove 22, the fixing components 23 completely fix the power bank within the positioning groove 22, thus forming a stable fixed connection between the power bank and the clamp 2.

[0042] In this embodiment, the fixing component 23 includes a wedge 231 and a boss 221. The side wall of the positioning groove 22 has an opening for the wedge 231 to pass through, and the wedge 231 is elastically connected to the boss 221. The side of the wedge 231 facing the open surface of the positioning groove 22 is a slope 242, and the side facing the bottom surface of the positioning groove 22 is a flat surface. During the process of installing the power bank into the positioning groove 22, the power bank presses against the slope 242 of the wedge 231, causing the wedge 231 to be subjected to a lateral sliding force. As the wedge 231 slides laterally, the power bank fits against the bottom surface of the positioning groove 22. At this time, the power bank does not apply any lateral external force to the wedge 231, and the wedge 231 elastically returns to its original position. At this time, the flat surface of the wedge 231 fits against the top surface of the power bank, thereby confining the power bank within the positioning groove 22.

[0043] In some embodiments, the wedge 231 has a guide rod 232 passing through the side of the boss 221 on the side away from the positioning groove 22. A compression spring 233 is provided on the guide rod 232, with one end of the spring 233 contacting the side of the wedge 231 and the other end contacting the side of the boss 221. One end of the guide rod 232 is fixedly connected to the wedge 231, and the other end passes through the side of the boss 221 and has a disc 234 that can pull the wedge 231 through the opening. The user can pull the disc 234 to slide the wedge 231 out of the opening, at which point the power bank can be removed from the positioning groove 22. Under the action of the spring force, the wedge 231 tends to extend into the opening and close the open surface of the positioning groove 22.

[0044] The working principle of this utility model is as follows: When assembling the fixture 2 and the vibration table 1, the fixture 2 is quickly assembled onto the designated area of ​​the vibration table 1 through the cooperation of the guide groove 12 and the guide rail 24. The connection between the fixture 2 and the vibration table 1 is further reinforced by screws 211. When assembling the power bank onto the fixture 2, the power bank is directly placed into the positioning groove 22. The reinforcing component can automatically avoid the power bank, allowing it to smoothly enter the positioning groove 22, and then return to its original position, fixing the power bank in place within the positioning groove 22.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vibration testing apparatus, characterized by comprising: include: A vibration table (1) is provided with a plurality of evenly distributed threaded holes (11) and at least two guide grooves (12); The clamp (2) is provided with screws (211) that mate with the threaded hole (11), and there are at least two screws (211); the clamp (2) is provided with a guide rail (24) that mates with the guide groove (12).

2. The vibration testing apparatus of claim 1, wherein One end of the guide groove (12) is an open end and the other end is a closed end, and the closed end is in contact with the end face of the guide rail (24).

3. The vibration testing apparatus of claim 2, wherein The closed end is an inclined surface (122), and the end face of the guide rail (24) is a slope (242) that abuts against the inclined surface (122). The inclined surface (122) is provided with a magnetic block (123) that has an adsorption effect on the guide rail (24).

4. The vibration testing apparatus of claim 3, wherein The clamp (2) has a handle (212) on the side away from the closed end, and the closed end has a through hole (124) corresponding to the position of the magnetic block (123), and the through hole (124) passes through the magnetic block (123).

5. The vibration testing apparatus of claim 1, wherein The guide rail (24) has a plurality of evenly spaced balls (241) on the side of the guide groove (12) near the bottom surface. The bottom surface of the guide groove (12) is provided with a sliding groove (121) that matches the ball (241) in the movement trajectory of the ball (241). The ball (241) rolls in contact with the sliding groove (121).

6. The vibration testing apparatus according to any one of claims 1 to 4, wherein The clamp (2) includes a base plate (21) and a positioning groove (22). The base plate (21) is provided with a screw (211) that is threadedly connected to the threaded hole (11). The base plate (21) is provided with the positioning groove (22) for placing the power bank.

7. The vibration testing apparatus of claim 6, wherein The base plate (21) is provided with no less than two positioning grooves (22), and the multiple positioning grooves (22) are evenly distributed on the base plate (21).

8. The vibration testing apparatus as described in claim 7, characterized in that, The bottom surface of the positioning groove (22) is fixedly connected to the base plate (21), and the top surface is an open surface. The two opposite side walls of the positioning groove (22) are provided with fixing components (23) for fixing the power bank in the positioning groove (22).

9. The vibration testing apparatus as described in claim 8, characterized in that, The fixing component (23) includes a wedge (231) and a boss (221). The side wall of the positioning groove (22) is provided with an opening for the wedge (231) to pass through. The wedge (231) is elastically connected to the boss (221).

10. The vibration testing apparatus as described in claim 9, characterized in that, The wedge (231) is provided with a guide rod (232) on the side away from the positioning groove (22) that passes through the side of the boss (221). The guide rod (232) is provided with a compression spring (233). One end of the compression spring (233) contacts the side of the wedge (231), and the other end contacts the side of the boss (221). One end of the guide rod (232) is fixedly connected to the wedge (231), and the other end passes through the side of the boss (221) and is provided with a disc (234) that can pull the wedge (231) through the opening.

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