Power amplifier test instrument for audio finished product

Abstract

The utility model discloses a power amplifier testing instrument for audio finished products, which belongs to the technical field of audio testing devices and comprises a tester body, a threaded sleeve is fixedly connected to the bottom of the tester body, the tester body is in threaded connection with a bolt through the threaded sleeve, and a connecting piece is rotatably connected to the bottom of the bolt. The outer side wall of the connecting piece is rotationally connected with a supporting frame, the outer side wall of the end, away from the connecting piece, of the supporting frame is fixedly connected with a limiting ring, and the inner side wall of the limiting ring is fixedly connected with a sliding column. According to the power amplifier test instrument for the audio finished product, the height position of the test instrument main body is adjusted through cooperative use of a threaded sleeve, a bolt, a connecting piece, a supporting frame, a limiting ring, a sliding column, a reset spring, a moving rod, a cross beam and a clamping groove; therefore, operators can conveniently and better connect and test professional large-scale power amplifiers with input and output interfaces located at high positions, and meanwhile, the device can better adapt to site limitation in a test environment with limited space.

Description

Technical Field

[0001] The utility model belongs to the technical field of audio testing devices, and more specifically, relates to a power amplifier testing instrument for audio finished products. Background Technique

[0002] In the audio field, it is crucial to accurately test the power amplifier of audio finished products. An audio finished product power amplifier testing instrument is a device specifically used to detect the performance of power amplifiers, and it can measure various parameters of power amplifiers, such as frequency response, distortion degree, output power, etc. These parameters play a key role in evaluating the quality and performance of power amplifiers;

[0003] However, for some professional large-scale power amplifiers, their input and output interfaces may be located at a relatively high position. When the height of the power amplifier under test is relatively large, if the height of the testing instrument is too low, it may lead to inconvenient connection or inaccurate measurement of parameters of some key parts. Moreover, in some small laboratories or narrow workspaces, the testing instrument may collide with other equipment or obstacles during use;

[0004] To solve the above problems, a power amplifier testing instrument for audio finished products is proposed in this application. Content of the Utility Model

[0005] Aiming at the problems in the related art, the utility model proposes a power amplifier testing instrument for audio finished products to overcome the above technical problems existing in the existing related art.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A power amplifier testing instrument for audio finished products includes a tester main body. A threaded sleeve is fixedly connected to the bottom of the tester main body. The tester main body is threadedly connected with a bolt through the threaded sleeve. The bottom of the bolt is rotatably connected to a connecting member. The outer side wall of the connecting member is rotatably connected to a support frame. A limiting ring is fixedly connected to the outer side wall of the support frame far away from the connecting member. A sliding column is fixedly connected to the inner side wall of the limiting ring. A reset spring is fixedly connected to the inner side wall of the limiting ring. A moving rod is slidably connected to the outer side wall of the sliding column. One end of the reset spring far away from the inner side wall of the limiting ring is fixedly connected to the outer side wall of the moving rod. A cross beam is rotatably connected to the outer side wall of the moving rod. A card slot is opened on the outer side wall of the cross beam.

[0008] Preferably, an adjustment groove is opened on the top of the cross beam. A handle is slidably connected to the cross beam through the adjustment groove. By setting the handle and the adjustment groove, it is convenient for the operator to lift the tester main body as a whole for carrying when carrying the tester main body, improving portability.

[0009] Preferably, a rubber column is fixedly connected to the bottom of the tester main body, and the inner side wall of the rubber column fits the outer side wall of the threaded sleeve. By providing the rubber column, it is convenient to support the tester main body when the connecting piece and the support frame are not needed.

[0010] Preferably, a limiting groove is formed on the outer side wall of the cross beam, a limiting plate is fixedly connected to the outer side wall of the handle, and the outer side wall of the limiting plate fits the inner side wall of the limiting groove. By providing the limiting groove and the limiting plate, it is convenient to limit the handle and prevent the handle from falling off during use.

[0011] Preferably, a rubber pad is fixedly connected to the outer side wall of the cross beam, and the rubber pad is located inside the clamping groove. By providing the rubber pad, it is convenient to increase the friction between the outer side wall of the cross beam and the outer side wall of the moving rod.

[0012] Preferably, a convex block is fixedly connected to the outer side wall of the rubber pad. By providing this, it is convenient to increase the friction of the rubber pad, thereby improving the stability of the cross beam.

[0013] In summary, the technical effects and advantages of the present utility model are as follows: for the power amplifier test instrument for audio finished products, by the combined use of the threaded sleeve, bolt, connecting piece, support frame, limiting ring, sliding column, return spring, moving rod, cross beam, and clamping groove, the height position of the tester main body is adjusted, so as to facilitate the operator to better connect and test some professional large power amplifiers with input and output interfaces located at a higher position. At the same time, it can better adapt to the limitations of the test site in a test environment with limited space.

[0014] By the combined use of the handle, adjustment groove, limiting plate, connecting piece, support frame, limiting ring, sliding column, return spring, moving rod, and cross beam, it is convenient for the operator to carry the tester main body by adjusting the position between the handle and the cross beam when the use is completed or the tester main body needs to be carried, improving the portability of the tester main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the support frame and related parts of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the threaded sleeve and related parts of the present utility model;

[0018] Figure 4 is a schematic structural diagram of the cross beam and related parts of the present utility model.

[0019] In the figure:

[0020] 1. Tester main body; 2. Threaded sleeve; 3. Bolt; 4. Connecting piece; 5. Support frame; 6. Limit ring; 7. Slide post; 8. Return spring; 9. Moving rod; 10. Cross beam; 11. Card slot; 12. Handle; 13. Rubber column; 14. Adjustment slot; 15. Limit slot; 16. Limit plate; 17. Rubber pad; 18. Convex block. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Figures 1-3 , a power amplifier test instrument for audio finished products, including a tester main body 1. A threaded sleeve 2 is fixedly connected to the bottom of the tester main body 1. There are four threaded sleeves 2, and the four threaded sleeves 2 are respectively located at the four corners of the bottom of the tester main body 1. The tester main body 1 is threadedly connected with four bolts 3 through the four threaded sleeves 2. The bottoms of the four bolts 3 are all rotatably connected with connecting pieces 4. The outer side walls of the four connecting pieces 4 are all rotatably connected with support frames 5. The outer side walls of the four support frames 5 away from the four connecting pieces 4 are all fixedly connected with limit rings 6. The inner side walls of the four limit rings 6 are all fixedly connected with slide posts 7. The inner side walls of the four limit rings 6 are respectively fixedly connected with return springs 8. The four return springs 8 are respectively wound around the outer side walls of the four slide posts 7. The outer side walls of the four slide posts 7 are slidably connected with two moving rods 9. The ends of the four return springs 8 away from the inner side walls of the four limit rings 6 are respectively fixedly connected with the outer side walls of the two ends of the two moving rods 9. The outer side wall of one of the moving rods 9 is rotatably connected with a cross beam 10. A card slot 11 is opened on the outer side wall of the end of the cross beam 10 away from the moving rod 9. There are three card slots 11;

[0023] When in use, the operator separates the cross beam 10 from the moving rod 9. Further, rotate the four support frames 5 so that the four support frames 5 rotate 180 degrees to the bottom of the tester main body 1. Further, continue to rotate the cross beam 10 so that the end of the cross beam 10 away from one of the moving rods 9 approaches the other moving rod 9. Further, pull the cross beam 10 in the direction close to the card slot 11. When the cross beam 10 moves, it will generate a pulling force on one of the moving rods 9, so that one of the moving rods 9 drives two of the return springs 8 to be compressed. When the card slot 11 approaches the other moving rod 9 and one of the card slots 11 is engaged with the other moving rod 9, release the cross beam 10. Under the action of the self-elastic force of the four return springs 8, the two moving rods 9 move in opposite directions respectively to clamp the cross beam 10, avoiding the separation of the cross beam 10 and the moving rod 9 during the support process, thereby restricting the four support frames 5, so that the four support frames 5 and the cross beam 10 cooperate to support the tester main body 1.

[0024] Refer to Figure 2 and Figure 4 , an adjustment groove 14 is formed at the top of the cross beam 10. The adjustment groove 14 is located at the center of the cross beam 10. The cross beam 10 is slidably connected with a handle 12 through the adjustment groove 14. After the operator finishes using, the four support frames 5 can be rotated reversely by 180 degrees, so that the four support frames 5 are restored to their original positions. Further, the cross beam 10 is engaged with the two moving rods 9, and then the handle 12 is pulled out, which is convenient for the operator to carry and transport the whole equipment.

[0025] Refer to Figure 4 , a rubber column 13 is fixedly connected to the bottom of the tester main body 1. There are four rubber columns 13, and the four rubber columns 13 are respectively located at the four corners of the bottom of the tester main body 1. The inner side walls of the four rubber columns 13 are respectively attached to the outer side walls of the four threaded sleeves 2. The four threaded sleeves 2 are located inside the four rubber columns 13, and the outer side walls of the bottoms of the four threaded sleeves 2 are closer to the bottom of the tester main body 1 than the outer side walls of the bottoms of the four rubber columns 13. The four rubber columns 13 are made of rubber. When the four support frames 5 are not needed, the four bolts 3 can be rotated to remove the parts arranged at the bottom of the tester main body 1. At this time, the rubber columns 13 support and buffer the tester main body 1, which is convenient for the operator to operate.

[0026] Refer to Figure 4 , a limiting groove 15 is formed on the outer side wall of the cross beam 10. There are two limiting grooves 15, and the two limiting grooves 15 are respectively located at the top and bottom of the cross beam 10. A limiting plate 16 is fixedly connected to the outer side wall of the handle 12. There are two limiting plates 16, and the two limiting plates 16 are respectively located at the top and bottom of the handle 12. The outer side walls of the two limiting plates 16 are respectively fitted with the inner side walls of the two limiting grooves 15, so as to prevent the handle 12 from separating from the cross beam 10 during the process of moving the handle 12.

[0027] Refer to Figure 4 , a rubber pad 17 is fixedly connected to the outer side wall of the cross beam 10. There are three rubber pads 17, and the three rubber pads 17 are respectively located inside the three clamping grooves 11. The three rubber pads 17 are convenient for increasing the friction force between one of the moving rods 9 and the clamping groove 11, so as to prevent the cross beam 10 from separating from the moving rod 9 during use.

[0028] Refer to Figure 4 , bump blocks 18 are fixedly connected to the outer side walls of the three rubber pads 17. There are multiple bump blocks 18, and the multiple bump blocks 18 are evenly distributed on the outer side walls of the three rubber pads 17. The multiple bump blocks 18 are convenient for increasing the friction force of the rubber pad 17 itself, so as to increase the friction force between the three rubber pads 17 and the outer side wall of one of the moving rods 9 when the three rubber pads 17 contact the outer side wall of one of the moving rods 9.

[0029] Working principle: During use, the operator separates the crossbeam 10 from the moving rod 9. Further, rotate the four support frames 5 so that the four support frames 5 rotate 180 degrees to the bottom of the tester main body 1. Further continue to rotate the crossbeam 10 so that the end of the crossbeam 10 away from one moving rod 9 approaches the other moving rod 9. Further, pull the crossbeam 10 in the direction close to the card slot 11. During the movement of the crossbeam 10, a pulling force will be generated on one of the moving rods 9, so that two return springs 8 are compressed by one of the moving rods 9. When the card slot 11 approaches the other moving rod 9 and one of the card slots 11 engages with the other moving rod 9, release the crossbeam 10. Under the action of the self-elastic force of the four return springs 8, the two moving rods 9 move in opposite directions respectively to clamp the crossbeam 10, preventing the crossbeam 10 from separating from the moving rod 9 during the support process, thereby restricting the four support frames 5 and enabling the four support frames 5 to cooperate with the crossbeam 10 to support the tester main body 1. After the operator finishes using it, the four support frames 5 can be rotated 180 degrees in the reverse direction to restore the four support frames 5 to their original positions. Further, the crossbeam 10 is engaged with the two moving rods 9, and then the handle 12 is pulled out to facilitate the operator to carry and transport the overall equipment. When the four support frames 5 are not needed, the four bolts 3 can be rotated to remove the parts provided at the bottom of the tester main body 1. At this time, the rubber column 13 supports and buffers the tester main body 1 to facilitate the operator's operation.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An amplifier test instrument for audio finished products, including a tester main body (1), characterized in that, A threaded sleeve (2) is fixedly connected to the bottom of the tester main body (1). The tester main body (1) is threadedly connected to a bolt (3) through the threaded sleeve (2). The bottom of the bolt (3) is rotatably connected to a connecting member (4). The outer side wall of the connecting member (4) is rotatably connected to a support frame (5). A limiting ring (6) is fixedly connected to the outer side wall of the support frame (5) away from the connecting member (4). A sliding column (7) is fixedly connected to the inner side wall of the limiting ring (6). A return spring (8) is fixedly connected to the inner side wall of the limiting ring (6). A moving rod (9) is slidably connected to the outer side wall of the sliding column (7). One end of the return spring (8) away from the inner side wall of the limiting ring (6) is fixedly connected to the outer side wall of the moving rod (9). A cross beam (10) is rotatably connected to the outer side wall of the moving rod (9). A clamping groove (11) is formed in the outer side wall of the cross beam (10).

2. The power amplifier test instrument for audio finished products according to claim 1, characterized in that, An adjustment groove (14) is formed in the top of the cross beam (10). A handle (12) is slidably connected to the cross beam (10) through the adjustment groove (14).

3. The power amplifier test instrument for audio finished products according to claim 1, characterized in that, A rubber column (13) is fixedly connected to the bottom of the tester main body (1). The inner side wall of the rubber column (13) is in contact with the outer side wall of the threaded sleeve (2).

4. A power amplifier test instrument for audio finished products according to claim 2, characterized in that, A limiting groove (15) is formed in the outer side wall of the cross beam (10). A limiting plate (16) is fixedly connected to the outer side wall of the handle (12). The outer side wall of the limiting plate (16) fits with the inner side wall of the limiting groove (15).

5. The power amplifier test instrument for audio finished products according to claim 2, characterized in that, A rubber pad (17) is fixedly connected to the outer side wall of the cross beam (10). The rubber pad (17) is located inside the clamping groove (11).

6. The power amplifier test instrument for audio finished products according to claim 5, characterized in that A convex block (18) is fixedly connected to the outer side wall of the rubber pad (17).

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