A teaching power amplifier device

Abstract

The utility model relates to a kind of teaching power amplifier equipment, belong to teaching aid technical field, including cabinet and power amplifier control host, the upper end of cabinet is provided with through-hole, and the inside of cabinet is fixedly installed with sliding plate, the inside sliding of sliding plate is connected with baffle, the lower end of baffle is linked installation has lifting plate, power amplifier control host is fixedly installed in the upper end of lifting plate, the lower end of sliding plate middle position is fixedly installed with electric telescopic rod, and the telescopic end of electric telescopic rod is fixedly connected with baffle, the front end of cabinet is embedded with sound, power amplifier control host is lifted by lifting plate, it is convenient to be raised to the upper of cabinet or be lowered to the inside of cabinet, use or storage, when storage, reach the effect of protecting power amplifier control host, and when storage, the descent of lifting plate, drive baffle moves in the inside of sliding plate, the exposed through-hole is plugged, improve the utilization effect of cabinet upper surface, it is convenient for teaching use.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, and in particular to a teaching power amplifier device. Background Technology

[0002] A power amplifier, also known as a power amplifier, generally refers to a basic device in an audio system. Its task is to amplify the weak electrical signal from the signal source (or mixing console in a professional audio system) to drive the speakers to produce sound. It can also refer to other devices that amplify power. In modern education, the application of multimedia is becoming increasingly widespread, leading to a greater use of power amplifiers. Currently, most power amplifiers are installed on the lectern for the teacher's convenience. However, due to limited space on the lectern and the large space occupied by the amplifier, the usable space is reduced. Furthermore, the exposed power amplifier is susceptible to damage from dust or impacts during teaching. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, this utility model provides a power amplifier device for teaching, which has the effect of lowering the power amplifier device into the interior of the cabinet for protection, improving the utilization rate of the cabinet desktop, and making it convenient to use.

[0004] The technical solution adopted by this utility model is: a power amplifier device for teaching, including a cabinet and a power amplifier control host. The upper end of the cabinet has a through hole, and U-shaped sliding plates are fixedly installed on both sides of the through hole inside the cabinet. A baffle is slidably engaged inside the sliding plate, and a lifting plate is linked to the lower end of the baffle. The power amplifier control host is fixedly installed on the upper end of the lifting plate. An electric telescopic rod is fixedly installed at the lower middle position of the sliding plate, and the telescopic end of the electric telescopic rod is fixedly connected to the baffle. Speakers are embedded on both sides of the front end of the cabinet. The power amplifier control host is electrically connected to the speakers. In use, the electric telescopic rod drives the speakers... The baffle slides inside the slide plate, increasing the distance between the baffles. When the baffles move, the lifting plate is linked to the baffle, causing the lifting plate to rise. The lifting plate then drives the amplifier control unit to extend through the gaps between the baffles and the through hole to the top of the cabinet, facilitating operation of the amplifier control unit. This allows the amplifier control unit to amplify and play externally collected signals through the speaker for easy use. When the amplifier control unit is not in use, the electric telescopic rod can be reversed to lower the lifting plate and the amplifier control unit, causing the baffles to move towards the center and block the through hole.

[0005] Preferably, a control panel is fixedly installed on one side of the upper end of the cabinet. The control panel is electrically connected to the electric telescopic rod, and a double-leaf sealing door is rotatably installed on the rear side of the cabinet. The control panel facilitates the opening and closing of the electric telescopic rod, allowing the telescopic end of the electric telescopic rod to extend or retract. The sealing door facilitates the opening of the rear side of the cabinet.

[0006] Preferably, connecting rods are rotatably mounted on both sides of the lower surface end of the baffle, and the other end of the connecting rods is rotatably connected to the lifting plate. The connecting rods on both sides are distributed in a V-shape. When the baffle moves, the baffle drives the ends of the connecting rods to move, thereby changing the angle formed between the connecting rods on both sides, achieving the effect of lifting the lifting plate.

[0007] Preferably, a first hinge seat is symmetrically installed on one side of the lower surface end of the baffle, and a second hinge seat is symmetrically installed on both sides of the lifting plate. The two ends of the connecting rod are respectively rotatably installed on the first hinge seat and the second hinge seat, which facilitates the installation of the connecting rod on both sides, so that when the baffle moves, the lifting plate is driven to rise and fall through the connecting rod.

[0008] Preferably, the lower end of the slide plate has symmetrical through holes, and the lower end of the first hinge seat extends through the through holes to the bottom of the slide plate, so as to prevent the slide plate from blocking when the first hinge seat moves with the baffle.

[0009] Preferably, a fixing plate is fixedly installed at the middle position on one side of the lower surface of the baffle, and the fixing plate is fixedly connected to the telescopic end of the electric telescopic rod, so as to facilitate the connection between the telescopic end of the electric telescopic rod and the baffle.

[0010] Preferably, a notch is provided at the middle of the lower end of the skateboard, and the lower end of the fixing plate extends through the notch to the bottom of the skateboard and is fixedly connected to the telescopic end of the electric telescopic rod, so as to prevent the skateboard from obstructing the movement trajectory of the fixing plate when the baffle is stored inside the skateboard.

[0011] Preferably, when the sum of the lengths of the two baffles is greater than the length of the through hole, and the lifting plate is at the same level as the upper surface of the cabinet, the distance between the baffle and the lifting plate is greater than the sum of the heights of the lifting plate and the power amplifier control host, so that when the power amplifier control host descends to the low position, the two baffles block the through hole.

[0012] The beneficial effects of this utility model are: by using a lifting plate to raise and lower the power amplifier control host, it is easy to raise the power amplifier control host to the top of the cabinet or lower it into the cabinet for use or storage. When storing, it achieves the effect of protecting the power amplifier control host. Moreover, when storing, the lowering of the lifting plate causes the baffle to move inside the sliding plate, sealing the exposed through holes, improving the utilization of the upper surface of the cabinet, and facilitating teaching use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the power amplifier control unit after it has risen.

[0014] Figure 2 This is a schematic diagram of the overall structure of the power amplifier control unit after it has been lowered.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model after the sealing door is removed;

[0016] Figure 4 This is a schematic diagram of the cabinet structure in this utility model;

[0017] Figure 5 This is a structural diagram showing the location of the power amplifier control host in this utility model;

[0018] Figure 6 This is a structural schematic diagram of the power amplifier control host from another angle in this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Cabinet; 2. Power amplifier control unit; 3. Through hole; 4. Slide plate; 5. Baffle; 6. Lifting plate; 7. Electric telescopic rod; 8. Speaker; 9. Control panel; 10. Sealed door; 11. Connecting rod; 12. First hinge seat; 13. Second hinge seat; 14. Through hole; 15. Fixing plate; 16. Notch. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] like Figures 1-6As shown, this embodiment provides a teaching amplifier device, including a cabinet 1 and an amplifier control host 2. The upper end of the cabinet 1 has a through hole 3, and U-shaped sliding plates 4 are fixedly installed on both sides of the through hole 3 inside the cabinet 1. A baffle 5 is slidably engaged inside the sliding plate 4, and a lifting plate 6 is linkedly installed at the lower end of the baffle 5. The amplifier control host 2 is fixedly installed on the upper end of the lifting plate 6. The sum of the lengths of the two baffles 5 is greater than the length of the through hole 3. When the lifting plate 6 and the upper surface of the cabinet 1 are at the same horizontal plane, the distance between the baffle 5 and the lifting plate 6 is greater than the sum of the heights of the lifting plate 6 and the amplifier control host 2. Therefore, when the amplifier control host 2 descends to its lowest position, the two baffles 5 block the through hole 3. Furthermore, when the lifting plate 6 and the amplifier control host 2 pass through the through hole 3, it prevents one side of the baffle 5 from contacting the amplifier control host 2 or the lifting plate 6, thus avoiding jamming. An electric telescopic rod 7 is fixedly installed at the lower middle position of the sliding plate 4. Furthermore, the telescopic end of the electric telescopic rod 7 is fixedly connected to the baffle 5. Speakers 8 are embedded on both sides of the front end of the cabinet 1. The power amplifier control host 2 is electrically connected to the speaker 8. In use, the electric telescopic rod 7 drives the baffle 5 to slide inside the slide plate 4, increasing the distance between the baffles 5. When the baffle 5 moves, the baffle 5 is linked with the lifting plate 6, causing the lifting plate 6 to rise. The lifting plate 6 drives the power amplifier control host 2 to extend to the top of the cabinet 1 through the gaps and through holes 3 between the baffles 5, facilitating the operation of the power amplifier control host 2. The power amplifier control host 2 amplifies and plays the externally collected signals through the speaker 8, making it easy to use. When the power amplifier control host 2 is not in use, the electric telescopic rod 7 is opened in reverse, causing the lifting plate 6 to drive the power amplifier control host 2 to descend, and the baffle 5 moves towards the center, sealing the through hole 3, facilitating the use of the upper surface of the cabinet 1 for teaching, and increasing the utilization of the desktop.

[0022] As a technical optimization solution of this utility model, specifically as follows: Figure 2 As shown, a control panel 9 is fixedly installed on one side of the upper end of the cabinet 1. The control panel 9 is electrically connected to the electric telescopic rod 7. A double-leaf sealing door 10 is rotatably installed on the rear side of the cabinet 1. The control panel 9 facilitates the opening and closing of the electric telescopic rod 7, allowing the telescopic end of the electric telescopic rod 7 to extend or retract. The sealing door 10 facilitates the opening of the rear side of the cabinet 1 for easy maintenance.

[0023] As a technical optimization solution of this utility model, specifically as follows: Figures 4-6As shown, connecting rods 11 are rotatably mounted on both sides of the lower surface end of the baffle 5, and the other end of the connecting rods 11 is rotatably connected to the lifting plate 6. The connecting rods 11 on both sides are distributed in a V-shape. Through the connecting rods 11, when the baffle 5 moves, the baffle 5 drives the ends of the connecting rods 11 to move, thereby changing the angle formed between the two connecting rods 11, achieving the effect of raising and lowering the lifting plate 6. A first hinge seat 12 is symmetrically mounted on one side of the lower surface end of the baffle 5, and a second hinge seat 13 is symmetrically mounted on both sides of the lifting plate 6. The two ends of the connecting rods 11 are rotatably mounted on the first hinge seat 12 and the second hinge seat 13, respectively. The first hinge seat 12 and the second hinge seat 13 facilitate the installation of the connecting rods 11 on both sides, so that when the baffle 5 moves, the connecting rods 11 drive the lifting plate 6 to rise and fall, and the sliding plate 4... The lower end of the slide plate 4 has symmetrical through holes 14. The lower end of the first hinge seat 12 extends through the through holes 14 to the bottom of the slide plate 4. Through the through holes 14, the slide plate 4 is prevented from being blocked when the first hinge seat 12 moves with the baffle 5, thus improving the smoothness during use. A fixing plate 15 is fixedly installed in the middle of one side of the lower surface of the baffle 5. The fixing plate 15 is fixedly connected to the telescopic end of the electric telescopic rod 7, which facilitates the connection between the telescopic end of the electric telescopic rod 7 and the baffle 5, so that the telescopic end of the electric telescopic rod 7 can adjust the position of the baffle 5. A notch 16 is opened in the middle of the lower end of the slide plate 4. The lower end of the fixing plate 15 extends through the notch 16 to the bottom of the slide plate 4 and is fixedly connected to the telescopic end of the electric telescopic rod 7. This prevents the slide plate 4 from blocking the movement trajectory of the fixing plate 15 when the baffle 5 is stored inside the slide plate 4.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A power amplifier device for teaching, characterized in that: The cabinet includes a cabinet (1) and a power amplifier control host (2). The upper end of the cabinet (1) has a through hole (3), and U-shaped sliding plates (4) are fixedly installed on both sides of the through hole (3) inside the cabinet (1). A baffle (5) is slidably engaged inside the sliding plate (4). A lifting plate (6) is installed at the lower end of the baffle (5). The power amplifier control host (2) is fixedly installed on the upper end of the lifting plate (6). An electric telescopic rod (7) is fixedly installed at the middle position of the lower end of the sliding plate (4), and the telescopic end of the electric telescopic rod (7) is fixedly connected to the baffle (5). Speakers (8) are embedded on both sides of the front end of the cabinet (1), and the power amplifier control host (2) is electrically connected to the speakers (8).

2. The teaching amplifier device according to claim 1, characterized in that: A control panel (9) is fixedly installed on one side of the upper end of the cabinet (1). The control panel (9) is electrically connected to the electric telescopic rod (7). A double-leaf sealing door (10) is rotatably installed on the rear side of the cabinet (1).

3. The teaching amplifier device according to claim 1, characterized in that: The lower surface of the baffle (5) is rotatably mounted on both sides of the baffle (5), and the other end of the baffle (11) is rotatably connected to the lifting plate (6). The baffle (11) on both sides is distributed in a V-shape.

4. The teaching amplifier device according to claim 3, characterized in that: The first hinge seat (12) is symmetrically installed on one side of the lower surface end of the baffle (5), and the second hinge seat (13) is symmetrically installed on both sides of the lifting plate (6). The two ends of the connecting rod (11) are respectively rotatably installed on the first hinge seat (12) and the second hinge seat (13).

5. The teaching amplifier device according to claim 4, characterized in that: The lower end of the slide plate (4) is symmetrically provided with through holes (14), and the lower end of the first hinge seat (12) extends through the through holes (14) to the bottom of the slide plate (4).

6. The teaching amplifier device according to claim 1, characterized in that: A fixing plate (15) is fixedly installed at the middle position on one side of the lower surface of the baffle (5), and the fixing plate (15) is fixedly connected to the telescopic end of the electric telescopic rod (7).

7. The teaching amplifier device according to claim 6, characterized in that: The lower end of the slide plate (4) has a notch (16) in the middle. The lower end of the fixing plate (15) extends through the notch (16) to the bottom of the slide plate (4) and is fixedly connected to the telescopic end of the electric telescopic rod (7).

8. The teaching amplifier device according to claim 1, characterized in that: When the sum of the lengths of the two baffles (5) is greater than the length of the through hole (3), and the lifting plate (6) and the upper surface of the cabinet (1) are on the same horizontal plane, the distance between the baffle (5) and the lifting plate (6) is greater than the sum of the heights of the lifting plate (6) and the power amplifier control host (2).

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