A high-pitched horn

Abstract

The utility model provides a kind of high-pitched horn, including horn body, horn body is in and is set along its length direction communication and overall is the sound wave channel of horn shape, and the small caliber end of sound wave channel is sound inlet, the one end of horn body close to sound wave channel sound inlet is used to connect loudspeaker, it is located in intermediate position and is set along vertical between the left and right side wall of sound wave channel with horizontal first guide solid block, it is also set at least two second guide solid blocks of symmetrically intermediate guide solid block in the left and right side wall of sound wave channel, first guide solid block and each second guide solid block are used to separate sound wave channel into at least four sound transmission channel, the path length that sound wave enters sound wave channel from sound inlet until from each sound transmission channel is transmitted is equal.The high-pitched horn disclosed by the utility model has smooth frequency response characteristics and good ultrahigh frequency extension characteristics.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and more specifically, to a tweeter horn. Background Technology

[0002] Tweeter horns (waveguides) are mainly used for sound pressure amplification of the high-frequency loudspeakers in speaker cabinets. Their function is similar to that of a power transformer in a power amplifier. The main difference is that the function of a power transformer is to reduce the AC voltage from 220V to the low voltage required by the circuit, while the tweeter horn reduces the acoustic impedance of the high-frequency loudspeaker from high impedance to low impedance, thereby improving the radiation efficiency of the loudspeaker and increasing its sensitivity.

[0003] The quality of a tweeter horn has a significant impact on the high-frequency characteristics of a speaker, primarily in two aspects: 1. Frequency response characteristics: A well-designed tweeter horn can effectively match the high-frequency speaker, allowing its performance to be fully realized, resulting in better ultra-high-frequency characteristics and a flatter response curve without significant peaks and valleys. 2. Coverage angle (directivity): A well-designed tweeter horn can meet the actual needs of a specific speaker, with a more reasonable directionality of the sound wave spread front, such as a wide horizontal beam and a narrow vertical beam. An ideal design is one where, as the offset angle increases, the frequency response characteristics do not exhibit a significant and drastic increase in high-frequency attenuation; this is known as a constant directivity tweeter horn.

[0004] Currently, ordinary exponential diffusion treble horns on the market are usually unable to meet the above performance requirements. Utility Model Content

[0005] To overcome at least one of the defects in the prior art, this utility model provides a high-pitched horn with smooth frequency response characteristics and good ultra-high frequency extension characteristics.

[0006] The technical solution adopted by this utility model is to provide a high-pitched horn: including a horn body, wherein a sound wave channel is opened in the horn body and is connected along its length and is generally horn-shaped, and the small-diameter end of the sound wave channel is the sound inlet. The end of the horn body near the sound inlet is used to connect a loudspeaker. A horizontal first guide block is arranged between the left and right side walls of the sound wave channel and at the middle position along the vertical direction. At least two second guide blocks are also arranged between the left and right side walls of the sound wave channel, which are symmetrical about the middle guide block. The first guide block and each of the second guide blocks are used to divide the sound wave channel into at least four sound transmission channels. The path length of the sound wave from the sound inlet into the sound wave channel until it is transmitted from each of the sound transmission channels is equal.

[0007] Compared with the prior art, the high-pitched horn of this utility model has the following advantages:

[0008] This invention's high-frequency horn, by adding a guide block within the sound wave channel, divides the original single sound transmission channel into multiple vertically arranged sound transmission channels. Furthermore, the path length of the sound wave from the inlet to the outlet of each of the aforementioned sound transmission channels is equal. In other words, the sound emitted by the loudspeaker arrives at the outlet simultaneously after passing through each sound transmission channel, without interference due to the sequence of sound waves in different channels. This allows the sound wave amplified by the high-frequency horn to have both smooth frequency response characteristics and excellent ultra-high frequency extension characteristics.

[0009] As an improvement, the first guide block has a fish-head shaped cross-section, and there are two second guide blocks, each with a leaf-shaped cross-section. In this improved structure, the sound wave channel outlets are expanded to four through one first guide block and two second guide blocks, achieving phase correction between each outlet and simultaneously realizing sound transmission and amplification. Furthermore, the overall horn body has a moderate volume and is suitable for a wide range of applications.

[0010] In a further improvement, one end of the horn body is provided with a first flange for connecting to a loudspeaker, and the other end is provided with a second flange for connecting to the speaker housing. In the above improved structure, the horn body has corresponding flanges at both ends, which facilitates its installation and fixation with other components.

[0011] In a further improvement, the horn body comprises a left horn body and a right horn body with identical structures, and the left and right horn bodies are detachably connected as a single unit via fasteners. In the above improved structure, the horn bodies with completely identical functional structures require only one mold for processing, reducing R&D costs and minimizing processing errors.

[0012] In a further improvement, at least two first connecting parts are formed on the outer walls of the upper and lower sides of the left horn body, and at least two second connecting parts are formed on the outer walls of the upper and lower sides of the right horn body. Each first connecting part and the corresponding second connecting part are connected and fixed together by a first bolt. A second bolt is also provided between the left horn body and the right horn body, and an air-avoiding channel is provided on the first guide block for the second bolt to pass through.

[0013] In a further improvement, each of the first and second connecting portions is provided with a first connecting hole for the first bolt to pass through, and the inner peripheral wall of the connecting hole of the first and / or second connecting portion is provided with a nut limiting groove to prevent the nut from rotating; the side walls of the left and right horn bodies are provided with second connecting holes communicating with the clearance channel, and the inner peripheral wall of the second connecting hole on the left or right horn body is provided with a nut limiting groove. In the above improved structure, the nut limiting groove design allows assembly to be completed smoothly without the need for a wrench, facilitating the disassembly and assembly of the left and right horn bodies and improving work efficiency.

[0014] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the high-pitched horn of this utility model;

[0016] Figure 2 This is a half-sectional view of the high-pitched horn of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the treble horn of this utility model, showing the disassembly of the left horn body.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Loudspeaker; 2. First guide block; 3. Second guide block; 4. First flange; 5. Second flange; 6. Left horn body; 7. Right horn body; 8. First connecting part; 9. Second connecting part; 10. First bolt; 11. Second bolt; 12. Clearance channel; 13. Sound transmission channel. Detailed Implementation

[0020] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0022] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] See Figures 1-3As shown in the figure, this application discloses a foldable portable tweeter horn, including a horn body. The horn body has a sound wave channel that is connected along its length and is horn-shaped. The small-diameter end of the sound wave channel is the inlet and the large-diameter end is the outlet. The end of the horn body near the inlet of the sound wave channel is used to connect to a speaker 1, and the end near the outlet is used to connect to the side wall of the speaker enclosure. Furthermore, in the above structure, a horizontal first guide block 2 is positioned vertically in the middle between the left and right sidewalls of the sound wave channel. The two ends of the first guide block 2 extend towards the inlet and outlet, respectively, and are spaced a certain distance from the ends of the inlet and outlet. At least two second guide blocks 3, symmetrically positioned vertically to the middle guide block, are also provided between the left and right sidewalls of the sound wave channel. The first guide block 2 and each of the second guide blocks 3 vertically divide the sound wave channel into at least four transmission channels. The path length of the sound wave from the inlet into the sound wave channel until it exits from each transmission channel is equal. In this structure, by adding corresponding guide blocks to the sound wave channel to divide its internal cavity into multiple channels, the sound emitted by the speaker 1 enters the inlet and then splits into multiple paths to reach the outlet, with each sound wave path being of equal length. (See Appendix) Figure 2 In the diagram, the paths indicated by arrows A1, A2, B1, and B2 are the four paths of sound wave transmission, also known as acoustic force lines. The four acoustic force lines shown in the diagram are of equal length. Specifically, in practical applications, the equal length of the acoustic force lines can be achieved by adjusting the shapes of the first guide block 2 and the second guide block 3. This allows multiple sound waves to reach the sound outlet simultaneously, avoiding interference in the ultra-high frequency band and effectively broadening the high-frequency response characteristics of the tweeter horn loudspeaker 1. Furthermore, the propagation paths of each sound wave are perpendicular to the sound wavefronts in each channel.

[0024] In this embodiment, in order to ensure that the length of each sound wave transmission path is the same, preferably, the cross-section of the first guide block 2 is fish head shaped, and there are two second guide blocks 3, which are symmetrically located above and below the first guide block 2, and the cross-sections of the two second guide blocks 3 are blade shaped.

[0025] Furthermore, for ease of connection and fixation, the above structure includes a first flange 4 at one end of the horn body for connecting the speaker 1, and a second flange 5 at the other end for connecting to the speaker housing. The first flange 4 has two symmetrical first connection holes, and the second flange 5 has four rectangularly distributed second connection holes on its outer periphery.

[0026] Furthermore, in this embodiment, to simplify the manufacturing process, the horn body includes a left horn body 6 and a right horn body 7 with identical structures, and the left horn body 6 and the right horn body 7 are detachably connected as one unit by fasteners. This split-type horn body design, where the left horn body 6 and the right horn body 7 have completely identical structures and are symmetrically designed, and when combined, they form a complete high-pitched horn, requires only one plastic mold, reducing development costs and minimizing manufacturing errors.

[0027] In this embodiment, at least two first connecting parts 8 are formed on the outer walls of the upper and lower sides of the left horn body 6, and at least two second connecting parts 9 are formed on the outer walls of the upper and lower sides of the right horn body 7. Each first connecting part 8 and the corresponding second connecting part 9 are connected and fixed together by a first bolt 10. A second bolt 11 is also inserted between the left horn body 6 and the right horn body 7, and a clearance channel 12 for the second bolt 11 to pass through is provided on the first guide block 2. In this structure, the first connecting parts 8 and the second connecting parts 9 are located on the outside of the horn body, and the sound wave channel will not be obstructed after the bolts are inserted. In addition, in order to further ensure the structural strength after the left and right horn bodies 7 are connected, a second connecting bolt is added near the middle position, and the second connecting bolt is directly inserted into the first guide block 2. While ensuring structural strength, it will not interfere with the sound wave channel.

[0028] More specifically, in the above-described connection structure, each of the first connecting parts 8 and the second connecting parts 9 has a first communicating hole for the first bolt 10 to pass through, and the inner peripheral wall of the communicating hole of the first connecting part and / or the second connecting part 9 has a nut limiting groove to prevent the nut from rotating; the nut limiting groove in this structure can be set individually on the left horn body 6 or the right horn body 7, or it can be staggered on the left horn body 6 and the right horn body 7. With this setting, during assembly, the nut is first pre-installed into the nut limiting groove of the corresponding side connecting part, the connecting bolt is inserted from the other side connecting part, and then connected to the nut, thus realizing the connection and fixation of the left and right horn bodies 7. Similarly, the side walls of the left horn body 6 and the right horn body 7 have a second communicating hole communicating with the clearance channel 12, and the inner peripheral wall of the second communicating hole on the left horn body 6 or the right horn body 7 has a nut limiting groove. The aforementioned connection structure, with its nut limiting grooves at various positions, allows for easy assembly without the need for a wrench; simply turning the bolt with a screwdriver is sufficient to secure the bolt and nut.

[0029] In the description of the embodiments of this application, it should be noted that the terms "upper", "lower", "left", "right" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0030] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-pitched horn, comprising a horn body, wherein a sound wave channel is formed within the horn body and is horn-shaped as a whole, the smaller diameter end of the sound wave channel being the sound inlet, and the end of the horn body near the sound inlet being used to connect a loudspeaker (1), characterized in that: A horizontal first guide block (2) is provided between the left and right sidewalls of the sound wave channel and at the middle position along the vertical direction. At least two second guide blocks (3) are also provided between the left and right sidewalls of the sound wave channel, which are symmetrical about the middle guide block. The first guide block (2) and each of the second guide blocks (3) are used to divide the sound wave channel into at least four sound transmission channels (13). The path length of the sound wave from the inlet to the outlet of the sound wave channel until it is transmitted from each of the sound transmission channels (13) is equal.

2. The high-pitched horn according to claim 1, characterized in that: The first guide block (2) has a fish head-shaped cross-section, and there are two second guide blocks (3), with the cross-sections of the two second guide blocks (3) being blade-shaped.

3. The treble horn according to claim 1, characterized in that: One end of the horn body is provided with a first flange (4) for connecting the loudspeaker (1), and the other end of the horn body is provided with a second flange (5) for connecting it to the speaker housing.

4. The treble horn according to claim 1, 2, or 3, characterized in that: The horn body includes a left horn body (6) and a right horn body (7) with the same structure, and the left horn body (6) and the right horn body (7) are detachably connected as one unit by fasteners.

5. The high-pitched horn according to claim 4, characterized in that: At least two first connecting parts (8) are formed on the outer walls of the upper and lower sides of the left horn body (6), and at least two second connecting parts (9) are formed on the outer walls of the upper and lower sides of the right horn body (7). Each first connecting part (8) and the corresponding second connecting part (9) are connected and fixed together by a first bolt (10). A second bolt (11) is also provided between the left horn body (6) and the right horn body (7), and an air-avoiding channel (12) is provided on the first guide block (2) for the second bolt (11) to pass through.

6. The treble horn according to claim 5, characterized in that: Each of the first connecting parts (8) and the second connecting parts (9) is provided with a first connecting hole for the first bolt (10) to pass through, and the inner peripheral wall of the connecting hole of the first connecting part and / or the second connecting part (9) is provided with a nut limiting groove for preventing the nut from rotating; the side walls of the left horn body (6) and the right horn body (7) are provided with a second connecting hole that communicates with the air-avoiding channel (12), and the inner peripheral wall of the second connecting hole on the left horn body (6) or the right horn body (7) is provided with a nut limiting groove.

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