Variable-direction constant-curvature acoustic horn
Through a variable-oriented constant curvature acoustic horn, combined with the tweeter dual unit and phase plug, the insufficient directionality and phase interference of the speaker horn are solved, achieving uniform sound coverage and sound quality improvement.
Patent Information
- Application Number
- CN202422317476.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Traditional speaker horns have problems such as insufficient directional control, uneven sound field coverage, and phase interference, which are difficult to adapt to different sound field needs.
Using a variable-oriented constant curvature acoustic horn, combined with the tweeter dual unit, a fish-mouth horn, a phase plug and a fastening unit, flexible directional adjustment is achieved through adjustable diffusion surface and rotary shaft fixing to ensure the consistency of sound wave phase and uniformity of frequency response.
It realizes uniform coverage of sound over a large range, reduces phase interference and uneven frequency response phenomena, and improves the naturalness and accuracy of sound quality performance.
Smart Images
Figure CN223080107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of loudspeakers, in particular to a constant-curvature acoustic horn with variable directivity. Background Technique
[0002] When an electric current passes through the voice coil of a loudspeaker, the changing magnetic field causes the voice coil to move back and forth. Since the voice coil is connected to the paper cone, this movement is transmitted to the paper cone, causing it to vibrate and push the air, thus generating sound. In the structure of a loudspeaker, the design of the horn helps to enhance the clarity and dynamic range of the sound, providing a better auditory experience.
[0003] The above-mentioned devices often have the following defects: First, traditional horns have insufficient directivity control and fixed directivity, which will lead to uneven sound distribution, easy to appear dead corners or hot spots in large-area coverage, uneven sound field coverage, and easy to appear regional sound attenuation or loss, making it difficult to adapt to different sound field requirements or venue structures; Second, due to design limitations, traditional horns are prone to phase interference problems caused by sound wave superposition in a multi-speaker array, resulting in uneven frequency response and affecting the overall performance of the sound field. Therefore, a constant-curvature acoustic horn with variable directivity is needed to solve the above problems. Summary of the Utility Model
[0004] The utility model provides a constant-curvature acoustic horn with variable directivity to solve the problems raised in the above background technique.
[0005] To solve the above technical problems, the technical solution of the utility model is as follows:
[0006] An embodiment of the utility model provides a constant-curvature acoustic horn with variable directivity, including:
[0007] A tweeter and a horn in the shape of a fish mouth installed on one side of the tweeter, wherein a phase plug for equalizing sound waves is arranged inside the horn;
[0008] A fastening unit, which is arranged on the surface of the horn;
[0009] A bottom box, which is fixedly connected to the horn through the fastening unit.
[0010] Through the above technical solution, the tweeter is arranged with two units. The two-unit arrangement of the tweeter is usually to provide a wider frequency response and better sound dispersion. The horn is fish-mouth shaped, enhancing the directivity and concentration of sound, enabling the high-frequency sound to be more accurately transmitted to a specific area, improving the sound clarity and dynamic performance. Among them, the horn is a curved surface structure, which can ensure that when the sound wave propagates, the curvature of its wavefront remains unchanged. The phase plug ensures that the sound waves on different paths have the same phase, improves the high-frequency response, reduces sound wave diffraction and reflection, and the fastening unit can firmly install the horn and the bottom box.
[0011] Further, the bottom box includes an adjustable diffuser surface fixedly connected by a diffuser surface fixing member, wherein screw threads of a second screw are provided on the surface of the diffuser surface fixing member and are threadedly connected to the surface of the adjustable diffuser surface.
[0012] Through the above technical solution, the diffuser surface fixing member can fixedly connect the bottom box and the adjustable diffuser surface, ensuring the stability of the connection.
[0013] Further, finger holes for manually adjusting the angle are provided on the outer surface of the adjustable diffuser surface, and two finger holes are provided on the outer surface of one adjustable diffuser surface.
[0014] Through the above technical solution, the finger holes can adjust the angle of the adjustable diffuser surface.
[0015] Further, a plurality of rotating shaft fixing members are provided on the outer surface of the bottom box. Screw threads of a first screw are provided on the outer surface of the plurality of rotating shaft fixing members and are threadedly connected to the surface of the bottom box. A rotating shaft is fixedly sleeved inside the plurality of rotating shaft fixing members, and the rotating shaft is rotationally connected to the adjustable diffuser surface.
[0016] Through the above technical solution, the rotating shaft fixedly connected to the rotating shaft fixing member is rotationally connected to the adjustable diffuser surface, enabling the bottom box and the adjustable diffuser surface to rotate at a certain angle.
[0017] Further, a spring positioning screw is installed on the inner surface of the bottom box, and an adjustable angle limit hole is provided on the surface of the adjustable diffuser surface to cooperate with the spring positioning screw to achieve angle limitation.
[0018] Through the above technical solution, the spring positioning screw is engaged in the adjustable angle limit hole, enabling the angle adjustment between the bottom box and the adjustable diffuser surface.
[0019] Further, the fastening unit includes a bolt. Through grooves and threaded cavities are respectively provided on the outer surfaces of the horn and the bottom box, and the bolt passes through the through groove and is threadedly connected to the threaded cavity.
[0020] Through the above technical solution, the bolt can fix the horn and the bottom box together.
[0021] Further, a nut is threadedly connected to the outer surface of the bolt, and a clamping block is arranged on the surface of the inner groove of the bolt. A shaft pin is fixedly connected to the outer surface of the clamping block and is rotatably connected to the bolt.
[0022] Through the above technical solution, the clamping block can hold the nut against sliding.
[0023] Further, a spring is welded and installed on the outer surface of the clamping block, and the other end of the spring is welded and installed on the surface of the inner groove.
[0024] Through the above technical solution, the spring can pull the clamping block and provide a downward pulling force for the clamping block.
[0025] The above scheme of the utility model has at least the following beneficial effects:
[0026] 1. In the utility model, the angle of the diffusion surface can be adjusted through the finger holes opened on the surface of the adjustable diffusion surface. The bottom box and the adjustable diffusion surface can be rotated through the rotating shaft fixing part and the rotating shaft. Moreover, through the adjustable angle limiting holes opened on the surface of the adjustable diffusion surface and the spring positioning screws installed on the bottom box, the angle limit during the rotation adjustment of the bottom box and the adjustable diffusion surface can be realized. The above settings make the horn have uniform directivity and flexible variable directivity angle, so that the sound is consistent and uniform in a large range, providing a more natural and accurate sound quality performance;
[0027] Through the high - frequency speakers arranged in a dual - unit manner, the horn with a fish - mouth shape and a curved surface structure, and the phase plug in the horn, a wider coverage angle is provided, reducing the fluctuations and distortion phenomena at the high - frequency or low - frequency ends of traditional horns, reducing the problems of phase interference and uneven frequency response, improving the performance of the overall audio system, and making the sound quality surface more uniform.
[0028] 3. In the utility model, through the threaded connection of the through - groove in the fastening unit passing through the through - groove and the threaded cavity, the horn and the bottom box can be fixed. The clamping block holds the nut against the surface of the horn tightly, preventing the phenomenon of thread slipping. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0030] Figure 2 is a schematic diagram of the mating structure of the bottom box and the adjustable diffusion surface of the utility model;
[0031] Figure 3 is a schematic diagram of the position where the finger holes are opened in the utility model;
[0032] Figure 4 is the utility model Figure 3Schematic diagram of the structure at position A
[0033] Figure 5 is a schematic diagram of the cooperative structure of the horn and the high - frequency loudspeaker of the present utility model;
[0034] Figure 6 is a schematic diagram of the phase plug structure of the present utility model;
[0035] Figure 7 is a schematic diagram of a partial structure of the fastening unit of the present utility model;
[0036] Figure 8 is a schematic diagram of the bolt structure of the present utility model.
[0037] Explanation of reference numerals:
[0038] 1, horn; 2, high - frequency loudspeaker; 3, bottom box; 4, adjustable diffusion surface; 5, rotating shaft; 6, rotating shaft fixing member; 7, diffusion surface fixing member; 8, screw one; 9, adjustable angle limit hole; 10, spring positioning screw; 11, phase plug; 12, finger hole; 13, fastening unit; 131, threaded cavity; 132, through groove; 133, bolt; 134, nut; 135, shaft pin; 136, block; 137, spring; 14, screw two. Detailed implementation manners
[0039] Hereinafter, exemplary embodiments of the present utility model will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be completely conveyed to those skilled in the art.
[0040] As Figures 1 to 8 shown, the embodiments of the present utility model provide a variable - direction constant - curvature acoustic horn, including:
[0041] a high - frequency loudspeaker 2 and a horn 1 in the shape of a fish mouth installed on one side of the high - frequency loudspeaker 2, wherein a phase plug 11 for equalizing sound waves is arranged inside the horn 1;
[0042] a fastening unit 13, and the fastening unit 13 is arranged on the surface of the horn 1;
[0043] a bottom box 3, and the bottom box 3 is fixedly connected to the horn 1 through the fastening unit 13.
[0044] There are two high - pitched speakers 2 and two horns 1 respectively. The two combined high - pitched speakers 2 and horns 1 are fixedly connected to each other. Among them, the horn 1 is in the shape of a fish's mouth and its surface is a curved surface, which can ensure that when sound waves propagate, the curvature of the wavefront remains unchanged. The phase plug 11 can balance the sound wave path length, ensure that the sound wave phases on different paths are consistent, improve the high - frequency response, and reduce sound wave diffraction and reflection.
[0045] As Figure 1 , Figure 2 and Figure 3 shown, the bottom box 3 includes an adjustable diffuser surface 4 fixedly connected by a diffuser surface fixing part 7. Among them, screws two 14 are arranged on the surface of the diffuser surface fixing part 7 and are thread - connected to the surface of the adjustable diffuser surface 4. Through the cooperation of the screws two 14 and the diffuser surface fixing part 7, the bottom box 3 and the adjustable diffuser surface 4 can be connected.
[0046] As Figure 2 and Figure 3 shown, finger holes 12 for manually adjusting the angle are provided on the outer surface of the adjustable diffuser surface 4, and two finger holes 12 are provided on the outer surface of one adjustable diffuser surface 4. The finger holes 12 can adjust the angle of the adjustable diffuser surface 4.
[0047] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a plurality of rotating shaft fixing parts 6 are provided on the outer surface of the bottom box 3. Screws one 8 are arranged on the outer surface of the plurality of rotating shaft fixing parts 6 and are thread - connected to the surface of the bottom box 3. A rotating shaft 5 is fixedly sleeved inside the plurality of rotating shaft fixing parts 6, and the rotating shaft 5 is rotationally connected to the adjustable diffuser surface 4. The rotating shaft fixing part 6 is connected to the bottom box 3 through the screw one 8. A rotating shaft 5 is fixedly connected inside the rotating shaft fixing part 6, and the rotating shaft 5 is rotationally connected to the adjustable diffuser surface 4, so that rotation can occur between the bottom box 3 and the adjustable diffuser surface 4.
[0048] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a spring positioning screw 10 is installed on the inner surface of the bottom box 3. An adjustable angle limit hole 9 is provided on the surface of the adjustable diffuser surface 4, and the angle limit is realized through the cooperation with the spring positioning screw 10. When the rotating shaft 5 and the adjustable diffuser surface 4 rotate in terms of angle, the angle can be adjusted to a certain position through the cooperation of the adjustable angle limit hole 9 and the spring positioning screw 10.
[0049] In the embodiment of the present utility model (working principle), the bottom box 3 can rotate the angle between the bottom box 3 and the adjustable diffusion surface 4 through the rotating shaft 5 and the rotating shaft fixing member 6. When rotating, the required angle of rotation can be limited through the adjustable angle limiting hole 9 and the spring positioning screw 10. The finger hole 12 can adjust the angle of the adjustable diffusion surface 4, so that the horn has uniform directivity and a flexible variable directivity angle, making the sound consistent and uniform in a large range, providing a more natural and accurate sound quality performance. The horn 1 with a curved surface can ensure that when the sound wave propagates, the curvature of the wavefront remains unchanged. The high-frequency speaker 2 can provide a wider frequency response and better sound dispersion, while the phase plug 11 can equalize the sound wave path length, ensure that the sound waves in different paths have the same phase, improve the high-frequency response, reduce sound wave diffraction and reflection. The cooperation between the horn 1, the high-frequency speaker 2 and the phase plug 11 provides a wider coverage angle, improving the performance of the overall audio system and making the sound quality surface more uniform.
[0050] As Figure 7 and Figure 8 shown, the fastening unit 13 includes a bolt 133. Through grooves 132 and threaded cavities 131 are respectively formed on the outer side surfaces of the horn 1 and the bottom box 3. The bolt 133 passes through the through groove 132 and is threadedly connected to the threaded cavity 131. The bolt 133 is threadedly connected to the threaded cavity 13 through the through groove 132, so that the horn 1 can be fixed on the bottom box 3.
[0051] As Figure 7 and Figure 8 shown, a nut 134 is threadedly connected to the outer side surface of the bolt 133. A block 136 is provided on the surface of the inner groove of the bolt 133. A shaft pin 135 is fixedly connected to the outer side surface of the block 136 and is rotatably connected to the bolt 133. The nut 134 can tightly fix the horn 1 and the bottom box 3 together. The block 136 on the bolt 133 can resist the nut 134 through the rotational connection of the shaft pin 135.
[0052] As Figure 7 and Figure 8 shown, a spring 137 is welded and installed on the outer side surface of the block 136, and the other end of the spring 137 is welded and installed on the surface of the inner groove. One end of the spring 137 is connected to the block 136, and the other end is connected to the inner groove of the nut 134, so that the block 136 has a downward pulling force.
[0053] In the embodiment of the present utility model (working principle), the bolt 133 passes through the through groove 132 formed on the horn 1 and is threadedly connected to the threaded cavity 131 on the bottom box 3. Then, the nut 134 is rotated to fasten the horn 1 and the bottom box 3. Then, the block 136 is stuck on the circular edge of the nut 134 to resist the nut 134, so that the nut 134 will not slip or become loose, making the horn 1 and the bottom box 3 tightly connected.
[0054] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.
Claims
1. A variable-pointing constant-curvature acoustic horn, characterized in that, Comprising: A tweeter (2) and a horn (1) in the shape of a fish mouth installed on one side of the tweeter (2), wherein a phase plug (11) for equalizing sound waves is provided inside the horn (1); A fastening unit (13), the fastening unit (13) being provided on the surface of the horn (1); A bottom box (3), the bottom box (3) being fixedly connected to the horn (1) through the fastening unit (13).
2. The variable-direction constant-curvature acoustic horn according to claim 1, characterized in that, The bottom box (3) includes an adjustable diffuser surface (4) fixedly connected through a diffuser surface fixing member (7), wherein screws two (14) are provided on the surface of the diffuser surface fixing member (7) and are threadedly connected to the surface of the adjustable diffuser surface (4).
3. The variable-direction constant-curvature acoustic horn according to claim 2, wherein Finger holes (12) for manually adjusting the angle are formed on the outer surface of the adjustable diffuser surface (4), and two finger holes (12) are formed on the outer surface of one adjustable diffuser surface (4).
4. The variable-direction constant-curvature acoustic horn according to claim 2, characterized in that A plurality of rotating shaft fixing members (6) are provided on the outer surface of the bottom box (3), screws one (8) are provided on the outer surfaces of the plurality of rotating shaft fixing members (6) and are threadedly connected to the surface of the bottom box (3), a rotating shaft (5) is fixedly sleeved inside the plurality of rotating shaft fixing members (6), and the rotating shaft (5) is rotatably connected to the adjustable diffuser surface (4).
5. The variable-direction constant-curvature acoustic horn according to claim 2, characterized in that, A spring positioning screw (10) is installed on the inner surface of the bottom box (3), and an adjustable angle limiting hole (9) is formed on the surface of the adjustable diffuser surface (4) to cooperate with the spring positioning screw (10) to achieve angle limitation.
6. The variable-pointing constant-curvature acoustic horn according to claim 1, characterized in that, The fastening unit (13) includes a bolt (133), through grooves (132) and threaded cavities (131) are respectively formed on the outer surfaces of the horn (1) and the bottom box (3), and the bolt (133) passes through the through groove (132) and is threadedly connected to the threaded cavity (131).
7. The variable-direction constant-curvature acoustic horn according to claim 6, wherein A nut (134) is threadedly connected to the outer surface of the bolt (133), a block (136) is provided on the surface of the inner groove of the bolt (133), and a shaft pin (135) is fixedly connected to the outer surface of the block (136) and is rotatably connected to the bolt (133).
8. The variable-direction constant-curvature acoustic horn according to claim 7, characterized in that, A spring (137) is welded and installed on the outer surface of the block (136), and the other end of the spring (137) is welded and installed on the surface of the inner groove.