Waveguide and sound box

Abstract

This utility model discloses a waveguide and a speaker, relating to the field of speaker waveguide technology. The waveguide includes an upper shell, a lower shell, and an intermediate body. The upper shell has a first positioning rib extending horizontally. The lower shell is located below the upper shell, forming a cavity between them. The cavity has a sound wave inlet and a sound wave outlet. The lower shell has a first positioning groove, and the first positioning rib cooperates with the first positioning groove. The intermediate body is located inside the cavity. The left and right sides of the intermediate body each have a second positioning rib extending horizontally, which overlaps the lower shell. The lower shell facing the upper shell and the upper shell facing the lower shell each have a second positioning groove. The second positioning rib cooperates with the second positioning groove, eliminating the need for bolts to fix the upper shell, lower shell, and intermediate body, making assembly easier.

Description

Technical Field

[0001] This utility model relates to the field of speaker waveguide technology, and particularly to waveguides and speakers. Background Technology

[0002] Currently, waveguides are placed in front of the tweeter of line array speakers. The waveguides can convert the spherical sound waves generated by the tweeter into planar sound waves and then propagate the sound wave signals outward. This allows the sound to spread more evenly and naturally to the listener area, improving the overall listening experience and speaker performance.

[0003] Existing waveguides typically consist of an upper shell, a lower shell, and an intermediate body. A cavity is formed between the upper and lower shells, and the intermediate body is located inside the cavity. An acoustic channel is formed between the intermediate body and the inner wall of the cavity. The acoustic channel can convert spherical sound waves into planar sound waves. The upper shell, lower shell, and intermediate body are usually fixed together with screws to position the intermediate body. This makes the assembly operation more complicated, and the alignment of the threaded holes is also more difficult because the upper and lower shells block the intermediate body. Utility Model Content

[0004] This utility model aims to solve the technical problems existing in the prior art. To this end, this utility model proposes a waveguide and speaker box that eliminates the need for bolts to fix the upper half shell, lower half shell, and intermediate body, making assembly operations more convenient.

[0005] The waveguide according to a first aspect embodiment of the present invention includes: The upper shell is provided with a first positioning rib extending horizontally; The lower half shell is located below the upper half shell, and a cavity is formed between the upper half shell and the lower half shell. The cavity has a sound wave inlet and a sound wave outlet. The lower half shell is provided with a first positioning groove, and the first positioning rib cooperates with the first positioning groove. An intermediate body is disposed within the cavity, and an acoustic channel is formed between the intermediate body and the inner wall of the cavity, connecting the sound wave inlet and the sound wave outlet. The acoustic channel is used to convert spherical sound waves into planar sound waves. The left and right sides of the intermediate body are respectively provided with second positioning ribs extending in the horizontal direction. The second positioning ribs overlap the lower half shell. The side of the lower half shell facing the upper half shell and the side of the upper half shell facing the lower half shell are both provided with second positioning grooves. The second positioning ribs cooperate with the second positioning grooves.

[0006] The waveguide according to the embodiment of this utility model has at least the following beneficial effects: During assembly, the intermediate body is first placed inside the lower shell, so that the second positioning rib overlaps on the lower shell to provide support. The second positioning rib also engages with the second positioning groove of the lower shell to provide positioning. Then, the upper shell is placed on top, and the second positioning groove of the upper shell engages with the second positioning rib. This allows the intermediate body to be positioned directly, and the waveguide can be installed directly without the need to use screws to fix the upper shell, lower shell and intermediate body together, making the assembly operation more convenient.

[0007] In some embodiments, the upper shell is provided with an upper slot located in the cavity, the lower shell is also provided with a lower slot located in the cavity, the lower end of the intermediate body is provided with a lower protruding rib inserted into the lower slot, and the upper end of the intermediate body is provided with an upper protruding rib inserted into the upper slot.

[0008] In some embodiments, the outer wall of the upper rib and / or the lower rib is V-shaped, and the lower slot and / or the lower slot is a V-shaped groove.

[0009] In some embodiments, the intermediate body includes an upper body and a lower body, and the second positioning rib includes an upper rib and a lower rib. The upper rib is formed in the upper body, and the lower rib is formed in the lower body. The lower rib overlaps the upper rib. The upper rib engages with the second positioning groove of the upper shell, and the lower rib engages with the second positioning groove of the lower shell.

[0010] In some embodiments, both the upper body and the lower body have an inner cavity, the lower side of the inner cavity of the upper body is provided with an opening, the upper side of the inner cavity of the lower body is provided with an opening, and both the inner cavities of the upper body and the lower body are provided with a first reinforcing rib.

[0011] In some embodiments, flanges are provided on both the front and rear sides of the upper shell and the lower shell, and the flanges are provided with threaded holes for bolt connection.

[0012] In some embodiments, the flange is provided with a second reinforcing rib.

[0013] In some embodiments, a portion of the second reinforcing rib is arranged corresponding to the position of the upper slot or the lower slot, the upper slot or the lower slot being formed on the second reinforcing rib.

[0014] In some embodiments, the waveguide is included.

[0015] The speaker according to a second aspect embodiment of the present invention includes the waveguide of the first aspect embodiment.

[0016] The speaker according to the present invention, since it includes the waveguide of the first aspect embodiment, has at least the above-mentioned beneficial effects, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the waveguide structure of some embodiments of the present invention; Figure 2 This is an exploded view of the waveguide of some embodiments of the present invention; Figure 3 This is a cross-sectional view of a waveguide according to some embodiments of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a cross-sectional view of the waveguide in some embodiments of the present invention from another direction; Figure 6 This is an exploded view of the intermediate body of the waveguide in some embodiments of the present invention; Figure 7 This is a schematic diagram of the lower half-shell structure of the waveguide according to some embodiments of the present invention; Figure 8 This is a schematic diagram of the upper shell of the waveguide in some embodiments of the present invention.

[0019] Figure label: Waveguide 1000; Upper shell 100, first positioning rib 110, upper slot 120, flange 130, threaded hole 140, second reinforcing rib 150; Lower half shell 200, first positioning groove 210, cavity 220, second positioning groove 230, acoustic wave inlet 240, acoustic wave outlet 250, lower slot 260; Intermediate body 300, acoustic channel 310, second positioning rib 320, upper half rib 321, lower half rib 322, lower convex rib 330, upper convex rib 340, upper half body 350, lower half body 360, first reinforcing rib 370. Detailed Implementation

[0020] Currently, waveguides are placed in front of the tweeter of line array speakers. The waveguides can convert the spherical sound waves generated by the tweeter into planar sound waves and then propagate the sound wave signals outward. This allows the sound to spread more evenly and naturally to the listener area, improving the overall listening experience and speaker performance.

[0021] Existing waveguides typically consist of an upper shell, a lower shell, and an intermediate body. A cavity is formed between the upper and lower shells, and the intermediate body is located inside the cavity. An acoustic channel is formed between the intermediate body and the inner wall of the cavity. The acoustic channel can convert spherical sound waves into planar sound waves. The upper shell, lower shell, and intermediate body are usually fixed together with screws to position the intermediate body. This makes the assembly operation more complicated, and the alignment of the threaded holes is also more difficult because the upper and lower shells block the intermediate body.

[0022] Based on this, refer to Figures 1 to 2 As shown, a waveguide 1000 provided in this embodiment of the present invention includes an upper shell 100, a lower shell 200, and an intermediate body 300. Its innovation lies in the ingenious use of a mechanical structure with ribs and grooves to replace the traditional screw fastening method, thereby achieving tool-free rapid positioning and fixation of the core component—the intermediate body 300.

[0023] Reference Figures 1 to 8 As shown, the upper shell 100 has a first positioning rib 110 extending horizontally, and the lower shell 200 is located below the upper shell 100. A cavity 220 is formed between the upper shell 100 and the lower shell 200. The cavity 220 has a sound wave inlet 240 and a sound wave outlet 250. The sound wave inlet 240 is usually designed to be circular or rectangular to tightly couple with the throat of the tweeter unit. The sound wave outlet 250 is usually a long and narrow rectangle, and its width and height determine the horizontal and vertical coverage angles of the waveguide. The lower shell 200 has a first positioning groove 210, and the first positioning rib 110 cooperates with the first positioning groove 210. An intermediate body 300 is disposed within the cavity 220. An acoustic channel 310 is formed between the intermediate body 300 and the inner wall of the cavity 220, connecting the acoustic wave inlet 240 and the acoustic wave outlet 250. The acoustic channel 310 is used to convert spherical sound waves into plane sound waves. Essentially, the acoustic channel 310 is a series of precisely calculated paths of unequal length. It divides the single spherical wavefront from the acoustic wave inlet 240 into multiple wavelets and guides them to propagate along different paths. By controlling the length of each path, all wavelets reach the acoustic wave outlet 250 with almost identical phases (i.e., achieving the principle of equal optical path length), thus recombineing into a coherent plane wavefront. The arrangement of the acoustic channel 310 is existing technology and will not be described further here. The intermediate body 300 has second positioning ribs 320 extending horizontally on both its left and right sides. These second positioning ribs 320 are essentially rib structures and overlap the lower shell 200. The lower shell 200 facing the upper shell 100 and the upper shell 100 facing the lower shell 200 both have second positioning grooves 230, which mate with the second positioning ribs 320. Flanges 130 are provided on both the front and rear sides of the upper shell 100 and the lower shell 200. Each flange 130 has threaded holes 140 for bolt connection.

[0024] During assembly, the intermediate body 300 is first placed inside the lower shell 200, allowing the second positioning rib 320 to overlap the lower shell 200 for support. The second positioning rib 320 also engages with the second positioning groove 230 of the lower shell 200 for positioning, eliminating the need for repeated alignment adjustments. Then, the upper shell 100 is placed on top, with its second positioning groove 230 engaging with the second positioning rib 320. This positions the intermediate body 300. The waveguide 1000 can then be directly installed by screwing bolts into the threaded holes 140 of the flanges 130 on both the front and rear sides of the upper shell 100 and lower shell 200, thus securing the entire waveguide 1000. The intermediate body 300 will not wobble, eliminating the need for additional screws to fix the upper shell 100, lower shell 200, and intermediate body 300 together, making assembly more convenient. The molded rib structure ensures extremely high positioning accuracy and repeatability, guaranteeing that every waveguide leaving the factory has the same acoustic performance. The overall force-bearing surface contact fixing is far more stable and durable than point-type screw fixing, effectively avoiding loosening and abnormal noise caused by vibration. It also reduces the procurement cost of standard parts such as screws, warehousing costs, and related assembly labor costs.

[0025] Reference Figure 7 and Figure 8 As shown, in some embodiments, the upper shell 100 is provided with an upper slot 120 located in the cavity 220, the lower shell 200 is also provided with a lower slot 260 located in the cavity 220, the lower end of the intermediate body 300 is provided with a lower protruding rib 330 inserted into the lower slot 260, and the upper end of the intermediate body 300 is provided with an upper protruding rib 340 inserted into the upper slot 120.

[0026] By setting the upper rib 340 and the lower rib 330 as limits, the intermediate body 300 can be prevented from moving left and right, resulting in a better positioning effect for the intermediate body 300. Furthermore, the upper rib 340 and the lower rib 330 are both set along the length direction of the waveguide 1000 (that is, the direction of sound wave propagation), making the upper rib 340 and the lower rib 330 thinner and the area of ​​the upper rib 340 and the lower rib 330 blocking the sound wave smaller, thus having less impact on the propagation of the sound wave.

[0027] Reference Figure 3 As shown, in some embodiments, the outer walls of the upper rib 340 and / or the lower rib 330 are V-shaped, and the lower slot 260 and / or the lower slot 260 is a V-groove. This arrangement prevents the intermediate body 300 from rotating about its left-right axis. Any force attempting to rotate the intermediate body is decomposed and canceled out by the V-shaped ramps, ensuring that the angle of the internal partitions of the acoustic channel always remains at the design value, which is crucial for maintaining accurate wavefront shaping.

[0028] Reference Figure 6As shown, in some embodiments, the intermediate body 300 includes an upper body 350 and a lower body 360, and the second positioning rib 320 includes an upper rib 321 and a lower rib 322. The upper rib 321 is formed on the upper body 350, and the lower rib 322 is formed on the lower body 360. The lower rib 322 overlaps the upper rib 321. The upper rib 321 cooperates with the second positioning groove 230 of the upper shell 100, and the lower rib 322 cooperates with the second positioning groove 230 of the lower shell 200.

[0029] Reference Figure 6 As shown, in some embodiments, both the upper body 350 and the lower body 360 have internal cavities. The lower side of the cavity of the upper body 350 is open, and the upper side of the cavity of the lower body 360 is open. The internal cavities reduce the weight of the intermediate body 300. In a line array speaker, the weight of each enclosure needs to be strictly controlled because it directly affects the safe load of the hoisting system and the ease of transportation. By creating cavities inside the upper body 350 and the lower body 360, the amount of material used can be significantly reduced without affecting the external acoustic function surface, thereby significantly reducing the weight of the intermediate body 300 itself, and further reducing the overall weight of the waveguide and even the speaker enclosure. However, simply hollowing out the structure weakens its rigidity and strength, potentially causing unnecessary resonance in components under sound pressure, thus polluting the sound quality. To address this issue, multiple first reinforcing ribs 370 are strategically arranged within the internal cavities. These reinforcing ribs, like beams and trusses in a building, significantly enhance the bending and torsional resistance of the upper body 350 and the lower body 360 with minimal material cost. This ensures the stability of their geometry under any working condition, suppresses harmful resonance, and achieves a balance between lightweight and high strength. Both the inner cavities of the upper body 350 and the lower body 360 are equipped with first reinforcing ribs 370, which strengthens the structural strength of both halves.

[0030] Reference Figure 1 As shown, in some embodiments, the flange 130 is provided with a second reinforcing rib 150. (Refer to...) Figure 3 As shown, in some embodiments, multiple second reinforcing ribs 150 may be provided. Some of the second reinforcing ribs 150 are arranged corresponding to the positions of the upper slot 120 or the lower slot 260, and the second reinforcing ribs 150 extend along the front-back direction of the waveguide 1000. The second reinforcing ribs 150 are located at the upper end of the upper housing or the lower end of the lower housing, and the upper slot 120 or the lower slot 260 is formed on the second reinforcing ribs 150. This arrangement can enhance the structural strength at the positions of the upper slot 120 or the lower slot 260.

[0031] The opening of the upper slot 120 and lower slot 260 inevitably creates areas of localized wall thinning on the shell, which structurally constitute potential stress concentration points. A clever aspect of this invention is that the position of a portion of the second reinforcing rib 150 corresponds to the position of the upper slot 120 or lower slot 260, and extends along the front-to-back direction. In effect, this means the slot is machined directly onto a thickened rib, rather than onto a thin, flat shell wall. This significantly enhances the material strength and rigidity of the area surrounding the slot, effectively compensating for the structural weakening caused by the slotting, and ensuring the entire waveguide remains robust and durable under any load conditions.

[0032] Examples of the embodiments described above are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described above with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A waveguide, characterized by, include: The upper shell is provided with a first positioning rib extending horizontally; The lower half shell is located below the upper half shell, and a cavity is formed between the upper half shell and the lower half shell. The cavity has a sound wave inlet and a sound wave outlet. The lower half shell is provided with a first positioning groove, and the first positioning rib cooperates with the first positioning groove. An intermediate body is disposed within the cavity, and an acoustic channel is formed between the intermediate body and the inner wall of the cavity, connecting the sound wave inlet and the sound wave outlet. The acoustic channel is used to convert spherical sound waves into planar sound waves. The left and right sides of the intermediate body are respectively provided with second positioning ribs extending in the horizontal direction. The second positioning ribs overlap the lower half shell. The side of the lower half shell facing the upper half shell and the side of the upper half shell facing the lower half shell are both provided with second positioning grooves. The second positioning ribs cooperate with the second positioning grooves.

2. The waveguide of claim 1, wherein, The upper shell is provided with an upper slot located in the cavity, and the lower shell is also provided with a lower slot located in the cavity. The lower end of the intermediate body is provided with a lower protruding rib that inserts into the lower slot, and the upper end of the intermediate body is provided with an upper protruding rib that inserts into the upper slot.

3. The waveguide of claim 2, wherein, The outer wall of the upper rib and / or the lower rib is V-shaped, and the lower slot and / or the lower slot is a V-shaped groove.

4. The waveguide of claim 1, wherein, The intermediate body includes an upper body and a lower body. The second positioning rib includes an upper rib and a lower rib. The upper rib is formed in the upper body, and the lower rib is formed in the lower body. The lower rib overlaps the upper rib. The upper rib engages with the second positioning groove of the upper shell, and the lower rib engages with the second positioning groove of the lower shell.

5. The waveguide of claim 4, wherein, Both the upper and lower halves have internal cavities. The upper half has an opening on the lower side of its internal cavity, and the lower half has an opening on the upper side of its internal cavity. Both the upper and lower cavities are provided with a first reinforcing rib.

6. The waveguide of claim 2, wherein, Flanges are provided on both the front and rear sides of the upper shell and the lower shell, and the flanges are provided with threaded holes for bolt connection.

7. The waveguide of claim 6, wherein, The flange is provided with a second reinforcing rib.

8. The waveguide of claim 7, wherein, The second reinforcing rib is arranged in a position corresponding to the upper slot or the lower slot, and the upper slot or the lower slot is formed on the second reinforcing rib.

9. A speaker, characterized in that, Includes the waveguide as described in any one of claims 1 to 8.

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