Bottom plate vibration test tool for electronic equipment

Abstract

The utility model discloses a bottom plate vibration test tool for electronic equipment, which comprises a bearing bottom plate and a cross-shaped mounting rack, the cross-shaped mounting rack is fixedly mounted at the top end of the bearing bottom plate, the top end of the cross-shaped mounting rack is fixedly connected with an internal thread cylinder, a lifting stud is mounted in the internal thread cylinder in a threaded manner, and the lifting stud is fixedly connected with the bearing bottom plate. The bottom end of the lifting stud is rotationally sleeved with a connecting bearing, the outer wall of the outer ring of the connecting bearing is fixedly sleeved with a rotating clamping ring, the bottom end of the rotating clamping ring is fixedly connected with a cross-shaped clamping frame, and the bottom end of the cross-shaped clamping frame is fixedly connected with a tablet personal computer in a clamped mode. And a rotating lantern ring is rotationally mounted at the bottom of the outer wall of the inner threaded cylinder. According to the utility model, the electronic equipment to be detected is clamped through structures such as the cross-shaped mounting frame and the cross-shaped clamping frame, so that the electronic equipment and the bearing bottom plate are fully attached and fixed, the vibration test effect is ensured, the vibration test accuracy is ensured, and the test distortion condition is reduced to the greatest extent.

Description

Technical Field

[0001] This utility model relates to the field of vibration testing technology, and in particular to a vibration testing fixture for the base plate of electronic equipment. Background Technology

[0002] In existing technologies, electronic devices refer to devices composed of electronic components such as integrated circuits, transistors, and vacuum tubes, which utilize electronic technology (including software) to function. Vibration testing assesses a product's vibration resistance in its intended operating environment by applying predefined vibration loads (such as frequency, acceleration, and displacement parameters). Classifications include: sinusoidal vibration, which involves periodic vibration at a single frequency or a scanning frequency (linear / exponential variation), suitable for simulating regular vibration sources such as rotating machinery and engines; and random vibration, which simulates irregular vibrations (such as bumpy roads and airflow disturbances), more closely resembling actual complex working conditions.

[0003] A search revealed that Chinese patent application number 202120235330.4 discloses a vibration fixture for an optoelectronic search device, comprising a base; a second vertical plate is provided on the rear left side of the upper surface of the base, a second U-shaped support frame is provided on the front left side of the upper surface of the base, a third U-shaped support frame is provided in the middle of the upper surface of the base, mounting holes are provided on the upper surface of the base, a third positioning screw hole is provided on the upper surface of the third U-shaped support frame, and a recess is provided on one end of the upper surface of the base near the inner side of the third U-shaped support frame, with a first positioning screw hole provided on the upper surface of the recess.

[0004] The above-mentioned patent has the following shortcomings: In actual use, the vibration fixture mainly fixes the device to be tested by using an external clamp to hold it and then fixing the clamp to the base, or by using an external clamp in conjunction with the base to fix the device to be tested. This will reduce the effect of vibration testing to a certain extent, produce some distortion, and reduce the testing effect. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vibration testing fixture for the base plate of electronic devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vibration testing fixture for an electronic device's base plate includes a supporting base plate and a cross-shaped mounting bracket. The cross-shaped mounting bracket is fixedly installed on the top of the supporting base plate, and an internally threaded cylinder is fixedly connected to the top of the cross-shaped mounting bracket. A lifting stud is installed on the internal thread of the internally threaded cylinder, and a connecting bearing is rotatably sleeved at the bottom of the lifting stud. A rotating retaining ring is fixedly sleeved on the outer wall of the outer ring of the connecting bearing, and a cross-shaped retaining bracket is fixedly connected to the bottom of the rotating retaining ring. A tablet computer is fixedly clamped at the bottom of the cross-shaped retaining bracket. A rotating collar is rotatably installed on the bottom of the outer wall of the internally threaded cylinder, and two limiting arms are symmetrically arranged at the top of the rotating collar. The top of the limiting arms has a retaining arm slot, and multiple mounting holes are equidistantly arranged on the outer wall of the lifting stud. A fixing rod is inserted into the mounting holes, and the two ends of the fixing rod are respectively clamped into the two retaining arm slots.

[0008] As a further improvement of this utility model: a fixed connecting block is fixedly connected to one side of the outer wall of the rotating collar, and a pressing bolt is threaded onto the top of the fixed connecting block.

[0009] As a further improvement of this utility model: a protective connecting frame is welded to the upper surface of the supporting base plate, and a plurality of mounting threaded holes are equidistantly opened on the outer wall of the protective connecting frame.

[0010] As a further embodiment of this utility model: a plurality of mounting through holes are provided on the side of the upper surface of the bearing base plate, and an adaptation groove is provided in the middle of the upper surface of the bearing base plate, and a mounting through hole is provided on the bottom wall of the adaptation groove.

[0011] As a further improvement of this utility model: the upper surface of the supporting base plate is provided with a plurality of mounting threaded holes at equal intervals, and the lower surface of the supporting base plate is fixedly connected with a plurality of positioning bosses.

[0012] As a further improvement of this utility model, a set of fixing screws is fixedly connected to all four sides of the upper surface of the bearing base plate.

[0013] As a further improvement of this utility model: each of the four arms of the cross mounting bracket is fixedly connected to a fixed connecting arm, and one end of the fixed connecting arm is provided with a plug-in through hole adapted to the fixing screw.

[0014] Compared with the prior art, this utility model provides a base plate vibration testing fixture for electronic devices, which has the following advantages:

[0015] This base plate vibration testing fixture uses a cross mounting bracket and cross clamp to clamp the electronic equipment to be tested, ensuring that the electronic equipment is fully attached to and fixed to the supporting base plate, thus guaranteeing the effectiveness and accuracy of the vibration test and minimizing test distortion.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the three-dimensional structure in partial cross-section;

[0019] Figure 3 This utility model Figure 2 A magnified schematic diagram of the local structure at point A;

[0020] Figure 4 This is a three-dimensional structural diagram of the load-bearing base plate of this utility model. Figure 1 ;

[0021] Figure 5 This is a three-dimensional structural diagram of the load-bearing base plate of this utility model. Figure 2 ;

[0022] Figure 6 A three-dimensional structural diagram of the assembly of the bearing base plate and the electromagnetic vibration loader of this utility model;

[0023] Figure 7 This utility model Figure 6 A schematic diagram of the three-dimensional structure in partial cross-section;

[0024] Figure 8 This utility model Figure 7 A magnified schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Bearing base plate; 2. Protective connecting frame; 3. Threaded mounting hole one; 4. Threaded mounting hole two; 5. Fixing screw; 6. Adaptive groove; 7. Through mounting hole one; 8. Through mounting hole two; 9. Cross mounting bracket; 10. Fixing connecting arm; 11. Internal threaded cylinder; 12. Rotating collar; 13. Limiting support arm; 14. Support arm slot; 15. Fixing connecting block; 16. Extrusion bolt; 17. Lifting stud; 18. Mounting insertion hole; 19. Fixing insertion rod; 20. Cross bracket; 21. Tablet unit; 22. Positioning boss; 23. Connecting bearing; 24. Rotating retaining ring; 25. Vibration table; 26. Electromagnetic vibration loader; 27. Boss slot; 28. Mounting screw. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] A fixture for testing the vibration of the base plate of electronic devices, such as Figures 1 to 8 As shown, it includes a supporting base plate 1 and a cross mounting bracket 9. A protective connecting frame 2 is welded to the upper surface of the supporting base plate 1, and the lower surface of the cross mounting bracket 9 is attached to the top of the protective connecting frame 2.

[0028] The outer wall of the protective connecting frame 2 is provided with multiple mounting threaded holes 3 at equal intervals, and the upper surface of the bearing base plate 1, which is located inside the protective connecting frame 2, is provided with multiple mounting threaded holes 4 at equal intervals. The mounting threaded holes 4 and the mounting threaded holes 3 cooperate to install the vibration test fixture. The specific installation method refers to the existing technology, namely the installation method of the vibration test fixture.

[0029] The upper surface of the support base plate 1 has a matching groove 6 in the middle, the bottom wall of the matching groove 6 has a mounting through hole 7, and the upper surface of the support base plate 1 has multiple mounting through holes 8 on the side.

[0030] The lower surface of the supporting base plate 1 is fixedly connected with multiple positioning bosses 22 corresponding to the mounting through holes 7 and 8. The mounting through holes 7 and 8 pass through the corresponding positioning bosses 22.

[0031] Each of the four sides of the upper surface of the bearing base plate 1 is fixedly connected with a set of fixing screws 5. Each set of fixing screws 5 is set with multiple screws at equal intervals, and all four sets of fixing screws 5 are located outside the protective connecting frame 2.

[0032] The four arms of the cross mounting bracket 9 are integrally formed with fixed connecting arms 10. The fixed connecting arms 10 include a vertical section and a horizontal section. The vertical section is connected to the cross mounting bracket 9 and fits against the outer wall of the protective connecting frame 2. The upper surface of the horizontal section is provided with multiple insertion holes that are adapted to the fixing screws 5. The fixing screws 5 pass through the insertion holes and are fitted with nuts. The nuts are used to press the horizontal section, thereby fixing the cross mounting bracket 9 to the bearing base plate 1.

[0033] The top of the cross mounting bracket 9 is fixedly connected to an internal threaded cylinder 11. The internal thread of the internal threaded cylinder 11 is fitted with a lifting stud 17. The bottom end of the lifting stud 17 passes through the cross mounting bracket 9 and extends downward. The bottom of its extended end is rotatably sleeved with a connecting bearing 23. The outer ring of the connecting bearing 23 is fixedly sleeved with a rotating retaining ring 24.

[0034] A cross-shaped bracket 20 is fixedly connected to the bottom end of the rotating retaining ring 24. The tablet computer 21 is fixedly attached to the bottom end of the cross-shaped bracket 20. The ends of the four support arms of the cross-shaped bracket 20 are all bent downwards to fix the tablet computer 21.

[0035] The cross-shaped card holder 20 is made of lightweight material to avoid resonance during vibration testing, which could damage the tablet computer 21. During use, the cross-shaped card holder 20 is not a fixed size and can be selected according to the actual electronic device being tested. The electronic device in the example described in this application is a tablet computer 21, but the actual electronic device being tested can also be a smartphone, a laptop computer, etc. The cross-shaped card holder 20 of the appropriate size is selected according to the actual size of the smartphone or laptop computer.

[0036] A rotating collar 12 is rotatably mounted on the bottom of the outer wall of the internally threaded cylinder 11. Two limiting arms 13 are symmetrically arranged at the top of the rotating collar 12. The top of the limiting arms 13 is provided with a support arm groove 14. The rotating collar 12 can only rotate relative to the internally threaded cylinder 11. The top of the limiting arms 13 is higher than the internally threaded cylinder 11.

[0037] A fixed connecting block 15 is fixedly connected to one side of the outer wall of the rotating collar 12. A pressing bolt 16 is threaded on the top of the fixed connecting block 15. The pressing bolt 16 passes through the fixed connecting block 15 and fits against the upper surface of the cross mounting bracket 9. When the pressing bolt 16 is rotated clockwise, the bottom end of the pressing bolt 16 presses against the cross mounting bracket 9. The static friction between the pressing bolt 16 and the cross mounting bracket 9, as well as the torque generated by the pressing bolt 16 on the fixed connecting block 15, prevent the rotating collar 12 from rotating.

[0038] The outer wall of the lifting stud 17 is provided with multiple mounting holes 18. The mounting holes 18 are equidistantly arranged along the axis of the lifting stud 17, and a fixing rod 19 is inserted into the inside of the mounting hole 18. The two ends of the fixing rod 19 are respectively engaged in the two support arm slots 14.

[0039] When this device is in use, an electromagnetic vibration loader 26 is provided at the bottom of the supporting base plate 1, and a vibration table 25 is fixedly installed at the top of the electromagnetic vibration loader 26. The upper surface of the vibration table 25 is provided with a plurality of boss slots 27 corresponding to the positioning bosses 22, and the bottom wall of the boss slots 27 is fixedly connected with mounting screws 28.

[0040] Multiple mounting screws 28 pass through mounting through holes 1 and 2 respectively and extend upward. Nuts are installed at their extended ends to fix the bearing base plate 1 to the vibration table 25. The top of the mounting screw 28 inside the mounting through hole 1 is flush with the upper surface of the bearing base plate 1.

[0041] Working principle:

[0042] Please refer to Figures 1 to 8 This device is as follows Figure 1 Assemble as shown;

[0043] When using this device, first, the supporting base plate 1 is installed on the vibration table 25. Then, the tablet computer 21 is inserted into the cross bracket 20 (the electronic product to be tested is inserted into the corresponding cross bracket 20). Next, the cross mounting bracket 9 is installed on the top of the supporting base plate 1 through the cooperation of the fixed connecting arm 10 and the fixed screw 5. Then, the lifting stud 17 is rotated clockwise, which drives the cross bracket 20 to move downward, so that the tablet computer 21 is attached to and fixed to the supporting base plate 1. Then, the rotating collar 12 is rotated so that the support arm slot 14 corresponds to the mounting hole 18. Then, the clamping bolt 16 is rotated clockwise to fix the rotating collar 12. Then, the fixed rod 19 is inserted into one of the mounting holes 18, so that the two ends of the fixed rod 19 are respectively inserted into the two support arm slots 14. Finally, the electromagnetic vibration loader 26 is started to perform vibration testing on the tablet computer 21.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bottom plate vibration test tool for electronic equipment, comprising a carrying bottom plate (1) and a cross mounting frame (9), characterized in that: The cross mounting frame (9) is fixedly installed at the top end of the bearing bottom plate (1), and the top end of the cross mounting frame (9) is fixedly connected with an internally threaded cylinder (11), the internally threaded cylinder (11) is internally threaded with a lifting stud (17), the bottom end of the lifting stud (17) is rotatably sleeved with a connecting bearing (23), the outer wall of the outer ring of the connecting bearing (23) is fixedly sleeved with a rotating snap ring (24), the bottom end of the rotating snap ring (24) is fixedly connected with a cross clamping frame (20), and the bottom end of the cross clamping frame (20) is fixedly clamped with a tablet computer (21); The outer wall bottom of the internally threaded cylinder (11) is rotatably installed with a rotating sleeve ring (12), the top end of the rotating sleeve ring (12) is symmetrically provided with two limiting arms (13), the top end of the limiting arm (13) is provided with an arm clamping groove (14), and the outer wall of the lifting stud (17) is equally provided with a plurality of mounting insertion holes (18), the mounting insertion hole (18) is inserted with a fixed insertion rod (19), and the both ends of the fixed insertion rod (19) are clamped in the two arm clamping grooves (14) respectively.

2. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The outer wall of the rotating sleeve ring (12) is fixedly connected with a fixed connecting block (15), and the top end of the fixed connecting block (15) is threaded with an extrusion bolt (16).

3. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The upper surface of the bearing bottom plate (1) is welded with a protective connecting frame (2), and the outer wall of the protective connecting frame (2) is equally provided with a plurality of mounting screw holes (3).

4. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The side of the upper surface of the bearing bottom plate (1) is provided with a plurality of mounting through holes (8), and the middle of the upper surface of the bearing bottom plate (1) is provided with an adaptive groove (6), and the bottom end groove wall of the adaptive groove (6) is provided with a mounting through hole (7).

5. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The upper surface of the bearing bottom plate (1) is equally provided with a plurality of mounting screw holes (4), and the lower surface of the bearing bottom plate (1) is fixedly connected with a plurality of positioning bosses (22).

6. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The upper surface of the bearing bottom plate (1) is fixedly connected with a group of fixed screw rods (5).

7. The bottom plate vibration test tool for electronic equipment according to claim 1, wherein: The four arm ends of the cross mounting frame (9) are fixedly connected with fixed connecting arms (10), and one end of the fixed connecting arm (10) is provided with a plug-in through hole matched with the fixed screw rod (5).

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