Working voltage testing device and method for audio equipment

Abstract

The invention discloses a working voltage testing device for audio equipment, which comprises a bottom box, the top of the bottom box is provided with a box cover, the bottom box is provided with a storage bin, the inner cavity of the storage bin is provided with a movable box, the top of the movable box is provided with two placing grooves, the top of the inner cavity of the movable box is provided with a pressing plate, and the pressing plate is provided with a clamping groove. According to the working voltage testing device and method for the audio equipment, after the box cover is covered, the movable plate is moved upwards, the movable plate is moved to the top of the inner cavity of the open groove, then the handle is turned over, the handle is turned over with the rotating shaft as the center, the handle drives the vertical plate to turn over through the rotating shaft, and the vertical plate is placed in the open groove. And then the acting force of the movable plate is slowly released, the movable plate moves downwards under the elastic action of the first spring, and the movable plate is arranged on the outer side of the vertical plate in a sleeving mode through the rectangular hole, so that the handle and the box cover are fixed, two purposes are achieved at a time, and operation is more convenient and faster.

Description

Technical Field

[0001] The present invention relates to the technical field of audio devices, and specifically to a working voltage testing device and method for audio devices. Background Art

[0002] Audio devices mainly refer to the general term for audio input and output devices, and there are also many types of products included. Generally, they can be divided into the following categories: power amplifiers, speakers, multimedia consoles, digital mixers, audio sampling cards, synthesizers, mid-high frequency speakers, microphones, sound cards and headphones in a PC, etc. Other peripheral audio devices: professional microphone series, headphones, sound reinforcement systems, etc. Sound quality is an important criterion for judging the quality of audio devices, including indicators such as signal-to-noise ratio, sampling bits, sampling frequency, total harmonic distortion, etc. The levels of these parameters determine the sound quality of audio devices. Since the sound quality of audio devices also depends on the magnitude of their working voltage.

[0003] However, most of the existing voltage testing devices have various problems. First, most of the existing voltage testing devices do not have adjustment knobs to adjust the resistance value, resulting in the inability to effectively protect the voltmeter during use. Second, most of the existing voltage testing devices do not have storage boxes, resulting in the need to store the detection probes and their overall structure separately, which are prone to loss. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a working voltage testing device and method for audio devices.

[0005] One of the purposes of the present invention is achieved by adopting the following technical solutions:

[0006] A working voltage testing device for audio devices includes a bottom box. A box cover is provided on the top of the bottom box. A storage bin is opened on the bottom box. An activity box is arranged in the inner cavity of the storage bin. Two placement slots are opened on the top of the activity box. A pressing plate is arranged at the top of the inner cavity of the activity box. A receiving groove is opened on the top of the storage bin. Two connecting rods are fixedly connected to both sides near the top of the pressing plate. The connecting rods extend into the inner cavity of the receiving groove. Two vertical slots are opened on both sides of the inner cavity of the receiving groove. One end of the connecting rod away from the pressing plate movably penetrates through the adjacent vertical slot and is fixedly connected to a second vertical rod. Connecting plates are arranged on both sides of the bottom box. Two cross plates are arranged at the bottom of the connecting plate. The cross plates are fixedly connected to both sides of the bottom box. The top end of the second vertical rod movably penetrates through the adjacent cross plate and is movably sleeved with a second spring. The second vertical rod is fixedly connected to the bottom of the adjacent connecting plate.

[0007] Preferably, two hinges are provided at the rear side of the box cover. The box cover is movably connected to the top of the bottom box through the hinges.

[0008] Preferably, a handle is provided on the front side of the bottom box. A rotating shaft is fixedly penetrated through the handle. Connecting blocks are provided on both the left and right sides of the handle. The connecting blocks are fixedly connected to the front side of the bottom box. The two ends of the rotating shaft are respectively rotatably connected to the adjacent connecting blocks. A vertical plate is fixedly connected to the top of the rotating shaft. A slot is opened on the front side of the box cover. A movable plate is movably penetrated through the inner cavity of the slot. A rectangular hole is opened on the movable plate. The top of the vertical plate is movably penetrated through the rectangular hole. A perforation is opened near the rear side of the movable plate. A first vertical rod is movably penetrated through the inner cavity of the perforation. A limiting plate is fixedly connected to the bottom end of the first vertical rod. A first spring is movably sleeved near the top of the outer edge of the first vertical rod. The first vertical rod is fixedly connected to the top of the inner cavity of the box cover.

[0009] Preferably, a voltmeter, an adjusting knob and two docking posts are provided near the rear side of the top of the bottom box. A scale is opened on the top of the bottom box. The scale is located outside the adjusting knob.

[0010] Preferably, a connecting wire, a connecting head, a handle and a probe are provided in the inner cavity of the placement groove. The connecting head is matched with the docking post.

[0011] Preferably, a rectangular groove is opened on the connecting plate. A support rod is movably connected in the inner cavity of the rectangular groove. A fixing rod is fixedly connected near the front side of the top of the support rod. Semi-circular plates are fixedly connected to both the left and right sides of the box cover. A clamping groove is opened on the front side of the semi-circular plate. The clamping groove is matched with the fixing rod.

[0012] Preferably, a pin shaft is fixedly penetrated through the support rod near the rear side. The two ends of the pin shaft are rotatably connected in the inner cavity of the rectangular groove.

[0013] A method for a working voltage testing device of an audio device includes the following steps:

[0014] Step 1: First, move the movable plate upward. The movable plate moves upward along the outer edges of the vertical plate and the first vertical rod. At the same time, the first spring is compressed. The movable plate moves upward until it is away from the vertical plate, thereby unlocking the fixation of the box cover.

[0015] Step 2: Then, flip the box cover upward. The box cover flips upward with the hinge as the center. The box cover drives the semi-circular plate to flip away from the bottom box. The semi-circular plate no longer exerts a downward pressure on the connecting plate. The connecting plate moves upward under the elastic action of the second spring. The connecting plate drives the pressing plate to move upward through the second vertical rod and the connecting rod.

[0016] Step 3: The pressing plate moves upward until it enters the inner cavity of the storage groove. At this time, the pressing plate no longer presses and protects the connecting wire, the connector, the handle, and the probe. At this time, the fixation of the movable box is also released. Then, move the movable box horizontally and remove the movable box from the inner cavity of the storage bin, so as to take out the connecting wire, the connector, the handle, and the probe.

[0017] Step 4: Then turn the support rod upward. The support rod rotates upward around the pin shaft. The support rod drives the fixed rod to rotate upward until it is inserted into the inner cavity of the card slot, thereby fixing the box cover, which is convenient for the assembly of the connector and the docking column, and the subsequent audio device testing work.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. For a working voltage testing device and method for audio devices of the present invention, after covering the box cover, move the movable plate upward. The movable plate moves to the top of the inner cavity of the slotted opening. Then, turn the handle. The handle rotates around the rotating shaft. The handle drives the vertical plate to rotate through the rotating shaft until the vertical plate is horizontal with the front side of the bottom box. Then, slowly release the acting force on the movable plate, and the movable plate moves downward under the elastic action of the first spring. The movable plate is sleeved outside the vertical plate through the rectangular hole, thereby fixing the handle and the box cover, killing two birds with one stone and making the operation more convenient.

[0020] 2. For a working voltage testing device and method for audio devices of the present invention, turn the support rod upward. The support rod rotates upward around the pin shaft. The support rod drives the fixed rod to rotate upward until it is inserted into the inner cavity of the card slot, thereby fixing the box cover, which is convenient for the assembly of the connector and the docking column, and the subsequent audio device testing work.

[0021] 3. For a working voltage testing device and method for audio devices of the present invention, through the operation of covering the box cover, not only can the connecting wire, the connector, the handle, and the probe be pressed and protected, but also the movable box can be pressed and fixed, killing two birds with one stone, so as to better protect the connecting wire, the connector, the handle, and the probe.

[0022] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the drawings, details are described as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front perspective view of a working voltage testing device and method for audio devices of the present invention;

[0024] Figure 2Rear perspective view of a working voltage testing device and method for an audio device according to the present invention;

[0025] Figure 3 For a working voltage testing device and method for an audio device according to the present invention Figure 1 Enlarged view of part A in;

[0026] Figure 4 Front perspective view of the component handle of a working voltage testing device and method for an audio device according to the present invention;

[0027] Figure 5 For a working voltage testing device and method for an audio device according to the present invention Figure 1 Exploded view of;

[0028] Figure 6 Front perspective view of the component box cover of a working voltage testing device and method for an audio device according to the present invention;

[0029] Figure 7 Bottom perspective view of the component box cover of a working voltage testing device and method for an audio device according to the present invention;

[0030] Figure 8 Rear perspective view of the component box cover of a working voltage testing device and method for an audio device according to the present invention;

[0031] Figure 9 Expanded perspective view of the component support rod of a working voltage testing device and method for an audio device according to the present invention;

[0032] Figure 10 Expanded perspective view of the component box cover of a working voltage testing device and method for an audio device according to the present invention;

[0033] Figure 11 Front perspective view of the component bottom box of a working voltage testing device and method for an audio device according to the present invention;

[0034] Figure 12 For a working voltage testing device and method for an audio device according to the present invention Figure 11 Exploded view of;

[0035] Figure 13 Front perspective view of the component movable plate of a working voltage testing device and method for an audio device according to the present invention;

[0036] Figure 14 Bottom perspective view of the component movable plate of a working voltage testing device and method for an audio device according to the present invention;

[0037] Figure 15Front elevation sectional view of the component bottom case of a working voltage testing device and method for an audio device according to the present invention;

[0038] Figure 16 Front elevation perspective view of the component pressure plate of a working voltage testing device and method for an audio device according to the present invention;

[0039] Figure 17 Front elevation perspective view of the component movable box of a working voltage testing device and method for an audio device according to the present invention;

[0040] Figure 18 Front elevation perspective view of the component connecting plate of a working voltage testing device and method for an audio device according to the present invention;

[0041] Figure 19 Front elevation perspective view of the component rectangular groove of a working voltage testing device and method for an audio device according to the present invention;

[0042] Figure 20 Cross-sectional view of the component semi-circular plate of a working voltage testing device and method for an audio device according to the present invention.

[0043] Reference numerals in the figure: 1, bottom case; 2, case cover; 3, hinge; 4, handle; 5, rotating shaft; 6, connecting block; 7, vertical plate; 8, slot; 9, movable plate; 10, rectangular hole; 11, first vertical rod; 12, first spring; 13, through hole; 14, limiting plate; 15, voltmeter; 16, docking post; 17, adjusting knob; 18, scale dial; 19, storage bin; 20, movable box; 21, placement groove; 22, connecting wire; 23, connector; 24, handle; 25, probe; 26, storage groove; 27, pressure plate; 28, connecting rod; 29, vertical groove; 30, second vertical rod; 31, horizontal plate; 32, second spring; 33, connecting plate; 34, rectangular groove; 35, support rod; 36, fixed rod; 37, semi-circular plate; 38, card slot; 39, pin shaft. Detailed implementation manners

[0044] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0045] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0047] Please refer to Figure 1-20 , the present invention provides a technical solution: a working voltage testing device for an audio device, including a bottom box 1, a box cover 2 is provided on the top of the bottom box 1, two hinges 3 are provided at the rear side of the box cover 2, and the box cover 2 is movably connected to the top of the bottom box 1 through the hinges 3. A voltmeter 15, an adjustment knob 17 and two docking posts 16 are provided near the rear side of the top of the bottom box 1. A scale 18 is opened on the top of the bottom box 1, and the scale 18 is located outside the adjustment knob 17;

[0048] A handle 4 is provided on the front side of the bottom box 1, a rotating shaft 5 is fixedly penetrated through the handle 4, connection blocks 6 are provided on both the left and right sides of the handle 4, the connection blocks 6 are fixedly connected to the front side of the bottom box 1, and both ends of the rotating shaft 5 are rotatably connected to the adjacent connection blocks 6 respectively. A vertical plate 7 is fixedly connected to the top of the rotating shaft 5. A slot 8 is opened on the front side of the box cover 2, a movable plate 9 is movably penetrated through the inner cavity of the slot 8, a rectangular hole 10 is opened on the movable plate 9, the top of the vertical plate 7 is movably penetrated through the rectangular hole 10, a through hole 13 is opened near the rear side of the movable plate 9, a first vertical rod 11 is movably penetrated through the inner cavity of the through hole 13, a limiting plate 14 is fixedly connected to the bottom end of the first vertical rod 11, a first spring 12 is movably sleeved on the outer edge of the first vertical rod 11 near the top end, and the first vertical rod 11 is fixedly connected to the top of the inner cavity of the box cover 2;

[0049] A storage bin 1 is provided with a storage compartment 19. An activity box 20 is arranged in the inner cavity of the storage compartment 19. Two placement slots 21 are provided at the top of the activity box 20. A connecting wire 22, a connector 23, a handle 24 and a probe 25 are arranged in the inner cavity of the placement slot 21. The connector 23 is mutually matched with the docking column 16. A pressing plate 27 is arranged at the top of the inner cavity of the activity box 20. A receiving groove 26 is provided at the top of the storage compartment 19. Two connecting rods 28 are fixedly connected to both sides near the top of the pressing plate 27. The connecting rods 28 extend into the inner cavity of the receiving groove 26. Two vertical slots 29 are provided on both sides of the inner cavity of the receiving groove 26. One end of the connecting rod 28 far from the pressing plate 27 movably penetrates through the adjacent vertical slot 29 and is fixedly connected to a second vertical rod 30. Connecting plates 33 are arranged on both sides of the bottom box 1. Two cross plates 31 are arranged at the bottom of the connecting plate 33. The cross plates 31 are fixedly connected to both sides of the bottom box 1. The top end of the second vertical rod 30 movably penetrates through the adjacent cross plate 31 and is movably sleeved with a second spring 32. The second vertical rod 30 is fixedly connected to the bottom of the adjacent connecting plate 33;

[0050] A rectangular slot 34 is provided on the connecting plate 33. A support rod 35 is movably connected in the inner cavity of the rectangular slot 34. A pin shaft 39 is fixedly penetrated through the support rod 35 near the rear side. Both ends of the pin shaft 39 are rotatably connected in the inner cavity of the rectangular slot 34. A fixed rod 36 is fixedly connected to the front side near the top of the support rod 35. Semi-circular plates 37 are fixedly connected to both sides of the box cover 2. A clamping slot 38 is provided on the front side of the semi-circular plate 37. The clamping slot 38 is mutually matched with the fixed rod 36.

[0051] A method for a working voltage testing device of an audio device includes the following steps:

[0052] Step 1: First, move the movable plate 9 upward. The movable plate 9 moves upward along the outer edges of the vertical plate 7 and the first vertical rod 11. At the same time, the first spring 12 is compressed. The movable plate 9 moves upward away from the vertical plate 7, thereby unlocking the fixation of the box cover 2;

[0053] Step 2: Then, flip the box cover 2 upward. The box cover 2 flips upward with the hinge 3 as the center. The box cover 2 drives the semi-circular plate 37 to flip away from the bottom box 1. The semi-circular plate 37 no longer exerts a downward pressure on the connecting plate 33. The connecting plate 33 moves upward under the elastic action of the second spring 32. The connecting plate 33 drives the pressing plate 27 to move upward through the second vertical rod 30 and the connecting rod 28;

[0054] Step 3: The pressing plate 27 moves upward into the inner cavity of the receiving groove 26. At this time, the pressing plate 27 no longer presses and protects the connecting wire 22, the connector 23, the handle 24 and the probe 25. At this time, the fixation of the activity box 20 is also unlocked. Then, move the activity box 20 horizontally and remove the activity box 20 from the inner cavity of the storage compartment 19, thereby taking out the connecting wire 22, the connector 23, the handle 24 and the probe 25;

[0055] Step 4: Then turn the support rod 35 upwards. The support rod 35 turns upwards with the pin shaft 39 as the center. The support rod 35 drives the fixed rod 36 to turn upwards until it is inserted into the inner cavity of the card slot 38, thereby fixing the box cover 2, which facilitates the assembly of the connector 23 and the docking post 16 and the subsequent audio device testing work.

[0056] Working principle: When it is necessary to test the audio device, first move the movable plate 9 upwards. The movable plate 9 moves upwards on the outer edges of the vertical plate 7 and the first vertical rod 11. At the same time, the first spring 12 is compressed. The movable plate 9 moves upwards away from the vertical plate 7, thereby unlocking the fixation of the box cover 2. Then turn the box cover 2 upwards. The box cover 2 turns upwards with the hinge 3 as the center. The box cover 2 drives the semi-circular plate 37 to turn away from the bottom box 1. The semi-circular plate 37 no longer exerts a downward pressure on the connecting plate 33. The connecting plate 33 moves upwards under the elastic action of the second spring 32. The connecting plate 33 drives the pressing plate 27 to move upwards through the second vertical rod 30 and the connecting rod 28. The pressing plate 27 moves upwards until it enters the inner cavity of the storage groove 26. At this time, the pressing plate 27 no longer suppresses and protects the connecting wire 22, the connector 23, the handle 24, and the probe 25. At this time, the fixation of the movable box 20 is also unlocked. Then move the movable box 20 horizontally and remove the movable box 20 from the inner cavity of the storage bin 19, thereby taking out the connecting wire 22, the connector 23, the handle 24, and the probe 25. Then turn the support rod 35 upwards. The support rod 35 turns upwards with the pin shaft 39 as the center. The support rod 35 drives the fixed rod 36 to turn upwards until it is inserted into the inner cavity of the card slot 38, thereby fixing the box cover 2, which facilitates the assembly of the connector 23 and the docking post 16 and the subsequent audio device testing work.

[0057] After the testing work is completed, unscrew the connector 23 from the docking post 16, then place the connecting wire 22, the connector 23, the handle 24, and the probe 25 in the inner cavity of the placement groove 21. After that, move the movable box 20 and move the movable box 20 into the inner cavity of the storage groove 26. Then, flip the support rod 35 forward, and the support rod 35 drives the fixed rod 36 to flip away from the card slot 38. The support rod 35 flips and is stored in the inner cavity of the rectangular groove 34. Then, cover the box cover 2, and the box cover 2 flips downward with the hinge 3 as the center. The box cover 2 drives the semi-circular plate 37 to flip and press downward on the connecting plate 33. The connecting plate 33 drives the pressing plate 27 to move downward through the connecting rod 28 and the second vertical rod 30. The pressing plate 27 moves downward to press and protect the connecting wire 22, the connector 23, the handle 24, and the probe 25. At the same time, the pressing plate 27 also presses and fixes the movable box 20. Then, move the movable plate 9 upward, and the movable plate 9 moves to the top of the inner cavity of the slot 8. Then, flip the handle 4, and the handle 4 flips with the rotating shaft 5 as the center. The handle 4 drives the vertical plate 7 to flip through the rotating shaft 5 until the vertical plate 7 is horizontal with the front side of the bottom box 1. Then, slowly release the force on the movable plate 9, and the movable plate 9 moves downward under the elastic action of the first spring 12. The movable plate 9 is sleeved outside the vertical plate 7 through the rectangular hole 10, so as to fix the handle 4 and the box cover 2, killing two birds with one stone and making the operation more convenient;

[0058] That is, by operating the box cover 2 of the device, the connecting wire 22, the connector 23, the handle 24, and the probe 25 can be pressed and protected, and the movable box 20 can also be pressed and fixed, killing two birds with one stone, so as to better protect the connecting wire 22, the connector 23, the handle 24, and the probe 25.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0061] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A working voltage test device for audio equipment, comprising a bottom box (1), characterized in that: The top of the bottom box (1) is provided with a box cover (2), the bottom box (1) is provided with a storage bin (19), the inner cavity of the storage bin (19) is provided with a movable box (20), the top of the movable box (20) is provided with two placement grooves (21), the top of the inner cavity of the movable box (20) is provided with a pressure plate (27), the top of the storage bin (19) is provided with a storage groove (26), the top of the pressure plate (27) is fixedly connected with two connecting rods (28) near the left and right sides, and the connecting rods (28) extend to the inner cavity of the storage groove (26), Two vertical grooves (29) are provided on both sides of the inner cavity of the storage groove (26); one end of the connecting rod (28) away from the pressure plate (27) movably passes through the adjacent vertical groove (29) and is fixedly connected to a second vertical rod (30); connecting plates (33) are provided on both sides of the bottom box (1); two horizontal plates (31) are provided at the bottom of the connecting plates (33); the horizontal plates (31) are fixedly connected to the left and right sides of the bottom box (1); the top end of the second vertical rod (30) movably passes through the adjacent horizontal plates (31) and is movably sleeved with a second spring (32).

2. The working voltage test device for audio equipment according to claim 1, characterized in that: The rear side of the box cover (2) is provided with two hinges (3), and the box cover (2) is movably connected to the top of the bottom box (1) via the hinges (3).

3. The working voltage test device for audio equipment according to claim 1, characterized in that: The front side of the bottom box (1) is provided with a handle (4), a rotating shaft (5) is fixedly provided through the handle (4), the left and right sides of the handle (4) are provided with connecting blocks (6), the connecting blocks (6) are fixedly connected to the front side of the bottom box (1), the two ends of the rotating shaft (5) are respectively rotatably connected to the adjacent connecting blocks (6), the top of the rotating shaft (5) is fixedly connected with a vertical plate (7), the front side of the box cover (2) is provided with a slot (8), the inner cavity of the slot (8) is movably provided with a movable plate (9), the movable plate (9) is provided with a movable plate (9) A rectangular hole (10) is provided on the movable plate (9), the top of the vertical plate (7) movably passes through the rectangular hole (10), a through hole (13) is provided on the movable plate (9) near the rear side, a first vertical rod (11) is movably passed through the inner cavity of the through hole (13), the bottom end of the first vertical rod (11) is fixedly connected to a limiting plate (14), the outer edge of the first vertical rod (11) is movably sleeved with a first spring (12) near the top end, and the first vertical rod (11) is fixedly connected to the top of the inner cavity of the box cover (2).

4. The working voltage test device for audio equipment according to claim 1, characterized in that: A voltmeter (15), an adjusting knob (17) and two docking posts (16) are provided on the top of the bottom box (1) near the rear side, and a dial (18) is provided on the top of the bottom box (1), and the dial (18) is located outside the adjusting knob (17).

5. The working voltage test device for audio equipment according to claim 1, characterized in that: The inner cavity of the placement slot (21) is provided with a connecting wire (22), a connecting head (23), a handle (24) and a probe (25), and the connecting head (23) matches the docking column (16).

6. The working voltage test device for audio equipment according to claim 1, characterized in that: The connecting plate (33) is provided with a rectangular groove (34), the inner cavity of the rectangular groove (34) is movably connected to a support rod (35), the top of the support rod (35) is fixedly connected to a fixing rod (36) near the front side, the left and right sides of the box cover (2) are fixedly connected to semicircular plates (37), the front side of the semicircular plate (37) is provided with a card slot (38), the card slot (38) and the fixing rod (36) match each other, and the second vertical rod (30) is fixedly connected to the bottom of the adjacent connecting plate (33).

7. The working voltage test device for audio equipment according to claim 1, characterized in that: A pin shaft (39) is fixedly provided on the support rod (35) near the rear side and penetrates through the support rod (35). Both ends of the pin shaft (39) are rotatably connected to the inner cavity of the rectangular groove (34).

8. A method for testing a working voltage of an audio device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: First, the movable plate (9) is moved upward. The movable plate (9) moves upward on the outer edges of the vertical plate (7) and the first vertical rod (11). At the same time, the first spring (12) is compressed, and the movable plate (9) moves upward away from the vertical plate (7), thereby unlocking the fixing of the box cover (2); Step 2: Then the box cover (2) is flipped upward, the box cover (2) is flipped upward with the hinge (3) as the center, the box cover (2) drives the semicircular plate (37) to flip away from the bottom box (1), the semicircular plate (37) no longer applies downward pressure to the connecting plate (33), the connecting plate (33) moves upward under the elastic action of the second spring (32), and the connecting plate (33) drives the pressure plate (27) to move upward through the second vertical rod (30) and the connecting rod (28); Step 3: The pressing plate (27) moves upward to enter the inner cavity of the storage slot (26). At this time, the pressing plate (27) no longer suppresses and protects the connecting wire (22), the connecting head (23), the handle (24) and the probe (25). At this time, the fixing of the movable box (20) is also released. Then, the movable box (20) is moved horizontally to remove the movable box (20) from the inner cavity of the storage bin (19), thereby taking out the connecting wire (22), the connecting head (23), the handle (24) and the probe (25); Step 4: Then flip the support rod (35) upwards. The support rod (35) flips upwards with the pin shaft (39) as the center. The support rod (35) drives the fixing rod (36) to flip upwards to be inserted into the inner cavity of the card slot (38), thereby fixing the box cover (2), thereby facilitating the assembly of the connector (23) and the docking column (16), and the subsequent audio equipment testing work.

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