Sound directional propagation device

Abstract

This utility model belongs to the field of acoustics, and particularly relates to a sound directional propagation device, including a frame, a sound transmitter, a guide rail, sliders, a rotating shaft, baffles, and a limiting frame. The sound transmitter is installed inside the frame, and the guide rail is installed on the upper side of the frame. Two sliders are symmetrically distributed and slidably mounted on the guide rail. Each slider has a rotating shaft rotatably mounted on it, and one end of each rotating shaft is slidably connected to the frame. Each rotating shaft has a baffle rotatably mounted on it, and the two baffles are arranged opposite each other to form a figure-eight structure. The limiting frame is installed and slidably mounted on one side of the frame. By setting up a height-adjustable support, and in conjunction with an adjusting rod, a locking plate, and a locking groove structure, the user can easily and quickly fold up the support, thereby significantly reducing the overall space occupied by the device, improving the convenience of handling and storage, and effectively enhancing the portability of the device. It is suitable for applications requiring frequent movement and rapid deployment, such as outdoor temporary deployment, exhibition hall tours, and teaching demonstrations.

Description

Technical Field

[0001] This utility model belongs to the field of acoustics, and in particular relates to a sound directional propagation device. Background Technology

[0002] A directional sound propagation device is a device specifically designed to focus sound and propagate it along a specific direction. Unlike traditional loudspeakers, this device reduces sound diffusion into non-target areas, thereby improving the clarity and intensity of the sound in the designated direction.

[0003] Traditional directional sound transmission devices mostly employ a fixed structural design, typically mimicking the installation of utility poles, and are securely mounted on the ground or a specific base. While this structure offers good stability, ensuring the device doesn't easily shake or shift during operation, the overall device is relatively bulky and occupies a large space. In practical applications, this presents problems such as inconvenient storage and transportation, making it difficult to meet the needs of applications requiring frequent movement and rapid deployment, such as outdoor activities, traveling exhibitions, and mobile teaching.

[0004] Therefore, there is a particular need for a sound-directed propagation device to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional sound directional propagation devices, such as fixed structure, bulkiness, inconvenience, and difficulty in meeting the flexible deployment requirements in mobile scenarios, this utility model provides a sound directional propagation device.

[0006] This utility model is achieved through the following technical means: a sound directional propagation device, including a frame, a sound transmitter, a guide rail, a slider, a rotating shaft, a baffle, a support, a limiting frame, an adjusting rod, and a locking plate. The sound transmitter is installed inside the frame, the guide rail is installed on the upper side of the frame, two sliders are symmetrically distributed and slidably arranged on the guide rail, each slider is rotatably provided with a rotating shaft, one end of each rotating shaft is slidably connected to the frame, and a baffle is rotatably provided on each rotating shaft. The two baffles are arranged opposite each other to form a figure-eight structure. The limiting frame is installed and slidably arranged on one side of the frame, the support is slidably arranged on the limiting frame, and its vertical plate has a plurality of evenly distributed locking slots. The adjusting rod is threaded on the limiting frame, and one end of it is rotatably provided with a locking plate. The locking plate has two locking rods, which simultaneously pass through the limiting frame and are inserted into the corresponding two locking slots.

[0007] In a preferred embodiment of the present invention, a handle is also included, which is installed on the other side of the upper part of the frame.

[0008] In a preferred embodiment of the present invention, a limiting rod is also included. A limiting rod is fixedly connected to each slider, the baffle is in contact with the corresponding limiting rod, and one end of each limiting rod is fixedly connected to the frame.

[0009] In a preferred embodiment of this invention, the surface of the baffle near the sound transmitter is covered with sound-insulating cotton.

[0010] In a preferred embodiment of this utility model, the other end of the adjusting rod is provided with a flower-shaped knob.

[0011] In a preferred embodiment of this utility model, mounting angle irons are installed on both sides of the lower part of the support.

[0012] Beneficial effects: By setting up a height-adjustable support, and with the help of adjusting rods, clamps and slots, users can easily and quickly fold up the support, thereby significantly reducing the overall space occupied by the device, improving the convenience of handling and storage, and effectively enhancing the portability of the device. It is suitable for application scenarios that require frequent movement and rapid deployment, such as outdoor temporary deployment, exhibition hall tours, and teaching demonstrations. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the support, slot, and limit frame components of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the frame, sound transmitter, and handle components of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the guide rail, slider, and rotating shaft components of this utility model.

[0017] Figure 5 This is a partial sectional view of the support, slot, and limit frame components of this utility model.

[0018] Figure 6 This is a partial cross-sectional view of the card plate component of this utility model.

[0019] Reference numerals: 1. Frame, 2. Sound transmitter, 3. Handle, 4. Guide rail, 5. Slider, 6. Rotating shaft, 7. Baffle, 8. Limiting rod, 9. Support, 10. Slot, 11. Limiting frame, 12. Adjusting rod, 13. Card plate. Detailed Implementation

[0020] Example: A sound directional propagation device, such as Figures 1-6As shown, the system includes a frame 1, a sound transmitter 2, a handle 3, a guide rail 4, a slider 5, a rotating shaft 6, a baffle 7, a limiting rod 8, a support 9, a limiting bracket 11, an adjusting rod 12, and a locking plate 13. The sound transmitter 2 is bolted to the inside of the frame 1. The handle 3 is bolted to the upper rear side of the frame 1 for easy movement and operation. The guide rail 4 is bolted to the upper front side of the frame 1. Two sliders 5 are symmetrically distributed and slidably mounted on the guide rail 4. Each slider 5 has a rotating shaft 6 rotatably mounted on it. The lower end of each rotating shaft 6 is slidably connected to the frame 1. Each rotating shaft 6 has a baffle 7 rotatably mounted on it. The two baffles 7 are arranged opposite each other, forming a figure-eight structure, which blocks the left and right sides of the frame 1, concentrating the sound emitted by the sound transmitter 2 and directing it to the front of the frame 1 for output, improving the directionality of the sound. The surface of the baffle 7 closest to the sound transmitter 2 is covered with sound-absorbing cotton. Each slider 5 is fixedly connected to a limiting rod. The rod 8 and the baffle 7 contact with the corresponding limiting rod 8, thereby limiting the rotation range of the baffle 7 and ensuring that the baffle 7 is stably at the set angle. The lower end of each limiting rod 8 is fixedly connected to the frame 1, further enhancing the structural stability and limiting strength of the limiting rod 8. The limiting frame 11 is bolted to the rear side of the frame 1, and the support 9 is slidably mounted on the limiting frame 11. Its vertical plate has multiple evenly distributed slots 10. The lower left and right sides of the support 9 are equipped with mounting angle irons to enhance the connection stability between the support 9 and the mounting surface (i.e., the ground). The adjusting rod 12 is threaded on the limiting frame 11. Its front end is rotatably equipped with a locking plate 13, and its rear end is equipped with a flower-shaped knob. The locking plate 13 has two locking rods. The two locking rods pass through the limiting frame 11 at the same time and are inserted into the two corresponding slots 10, thereby realizing the relative position locking between the support 9 and the frame 1, which facilitates the adjustment and fixing of the height of the frame 1.

[0021] Before use, the user first rotates the adjusting rod 12 counterclockwise. The adjusting rod 12 moves the locking plate 13 backward under the action of the thread, so that the two locking rods on the locking plate 13 are disengaged from the two currently inserted locking slots 10, thereby releasing the relative position lock between the support 9 and the frame 1. Then, the frame 1 is pressed down, so that the limiting frame 11 slides down along the support 9 until the lower part of the frame 1 contacts the support 9, completing the retraction action of the support 9, reducing the overall space occupied by the device, and making it easy to carry and store.

[0022] Next, rotate the adjusting rod 12 clockwise forward to move the locking plate 13 forward, so that the two locking rods are inserted into the two locking slots 10 at the corresponding height, and relock the relative position between the support 9 and the frame 1. Then, move the entire device to the target position by pulling the handle 3 and place the support 9 firmly on the ground. If it is necessary to adjust the height of the device according to the ground environment or usage requirements, the adjusting rod 12 can be rotated counterclockwise again to unlock it. After moving the frame 1 up or down to the appropriate position, rotate the adjusting rod 12 clockwise to fix it, ensuring the stability and adaptability of the device during use.

[0023] Once the height of the support 9 is adjusted, the sound transmitter 2 is activated. The sound emitted by it is effectively blocked by the baffles 7 on both sides and cannot spread to the left and right of the frame 1. Instead, it is concentrated and output from the front of the frame 1, which significantly improves the directionality of sound propagation and the sound field intensity in the target area, thus achieving more accurate sound projection.

[0024] When not in use, first turn off the sound transmitter 2, then pull the two sliders 5 outward so that the two baffles 7 are aligned with the outermost side of the frame. Then rotate the two baffles 7 inward so that they close together and cover the front opening of the frame 1. This not only protects the sound transmitter 2 and prevents dust and debris from entering the device and affecting its performance, but also further reduces the size of the device when not in use, improving the convenience of storage and transportation.

Claims

1. A sound directional propagation device, characterized in that, The system includes a frame (1), a sound transmitter (2), a guide rail (4), a slider (5), a rotating shaft (6), a baffle (7), a support (9), a limit frame (11), an adjusting rod (12), and a locking plate (13). The sound transmitter (2) is installed inside the frame (1), and the guide rail (4) is installed on the upper side of the frame (1). Two sliders (5) are symmetrically distributed and slidably arranged on the guide rail (4). Each slider (5) is rotatably equipped with a rotating shaft (6). One end of each rotating shaft (6) is slidably connected to the frame (1). A baffle (7) is rotatably set on the frame (1). The two baffles (7) are set opposite each other to form a figure-eight structure. The limiting frame (11) is installed on one side of the frame (1) and the support (9) is slidably set on the limiting frame (11). The vertical plate of the support has multiple evenly distributed slots (10). The adjusting rod (12) is threaded on the limiting frame (11) and a card plate (13) is rotatably set on one end of the adjustment rod (12). Two card rods are set on the card plate (13). The two card rods pass through the limiting frame (11) at the same time and are inserted into the corresponding two slots (10).

2. The sound directional propagation device according to claim 1, characterized in that, It also includes a handle (3), which is installed on the other side of the upper part of the frame (1).

3. The sound directional propagation device according to claim 2, characterized in that, It also includes a limit rod (8), with a limit rod (8) fixedly attached to each slider (5), the baffle (7) in contact with the corresponding limit rod (8), and one end of each limit rod (8) fixedly connected to the frame (1).

4. The sound directional propagation device according to claim 3, characterized in that, The side of the baffle (7) closest to the sound transmitter (2) is covered with sound insulation cotton.

5. A sound directional propagation device according to claim 4, characterized in that, The other end of the adjusting rod (12) is equipped with a flower-shaped knob.

6. A sound directional propagation device according to claim 5, characterized in that, The support (9) is equipped with mounting angle irons on both sides of its lower part.

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