A side-firing acoustic cavity structure

Abstract

The utility model relates to loudspeaker cavity structure technical field, concretely relates to a side export sound cavity structure, include: cavity structure ontology, loudspeaker, network sound post bottom shell and network sound post top shell, the inside fixed connection of cavity structure ontology has loudspeaker. The utility model discloses through setting up cavity structure ontology, loudspeaker, network sound post bottom shell, network sound post top shell, sound transmission assembly and movable sound insulation component etc. parts, through the intercommunication design of four -way sound guide pipe and branch sound pipe, spiral sound guide pipe and the linkage cooperation of shape memory alloy driver and sound insulation block, make the sound wave that loudspeaker sends can be through sound transmission assembly and direct side and rear side, adjust sound transmission path and volume through movable sound insulation component simultaneously, and then reached the device when using, avoid the effect that the sound hole is blocked, effectively promote the sound cavity sound efficiency and reduce the effect of noise interference.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker cavity structure technology, specifically to a side-exit sound cavity structure. Background Technology

[0002] Network speaker columns are devices that integrate network audio decoding, power amplifiers, and speakers. They transmit audio signals over a network and can be connected to a local area network or the Internet. They support remote control and multi-area group management, and can realize functions such as background music playback and broadcast notifications. They are commonly used in schools, shopping malls, parks, and other scenarios. They are easy to install and are the terminal devices of network audio systems.

[0003] Utility model patent CN208386839U discloses a network speaker for broadcasting, including a housing, a sound outlet, a limiting frame, an end cap, a frame, a fixing block, a limiting hole, a groove, and a dustproof net. The frame, with the dustproof net installed, is slid into the sound outlet. Due to the pressure of the inner wall of the sound outlet, the limiting rods on both sides of the frame slide into the groove and compress a spring. Once the groove on the frame aligns with the limiting hole on the fixing block, the spring causes the limiting rod to insert into the limiting hole and contact a push rod, thus completing the installation of the dustproof net. When cleaning the dustproof net is required, pressing the pressing blocks on the two fixing blocks pushes the limiting rod in the limiting hole away from the limiting hole, and then the limiting frame slides out of the sound outlet, completing the disassembly of the dustproof net. By removing the dustproof net for cleaning, the cleanliness of the network speaker is improved, reducing the impact of dust on the sound effect of the network speaker.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Although existing network speaker columns can be easily maintained by replacing the filter, in actual use, due to structural design limitations, their sound output direction is singular, and they cannot achieve multi-sided sound output. As a result, when the device is used in complex environments, sound wave propagation is easily blocked by obstacles or interfered with by environmental reflections, leading to problems such as uneven sound field distribution and lack of stereo sound effects. This seriously affects the actual use effect of network speaker columns in scenarios such as background music playback and public address systems. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a side-exit sound cavity structure. This effectively solves the problem that existing technologies are limited by structural design, resulting in a single sound output direction and an inability to achieve multi-sided sound output. Consequently, when the device is used in complex environments, sound wave propagation is easily blocked by obstacles or interfered with by environmental reflections, leading to uneven sound field distribution and lack of stereo sound effects. This seriously affects the actual use of network sound columns in scenarios such as background music playback and public address systems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a side-exit sound cavity structure, including: a cavity structure body, a loudspeaker, a network sound column bottom shell, and a network sound column top shell. The loudspeaker is fixedly connected inside the cavity structure body. The cavity structure body is fixedly connected to the front side of the bottom surface inside the network sound column bottom shell. The bottom of the network sound column top shell is fixedly connected to the top of the network sound column bottom shell. The sound-emitting end of the loudspeaker is connected to a sound guiding and conveying assembly. The sound guiding and conveying assembly includes a four-way sound guide tube. The two outermost ends of the other three ends of the four-way sound guide tube are connected to sound splitting tubes. The other end of the sound splitting tube is connected to a spiral sound guide tube. The other end of the four-way sound guide tube is connected to a sound output tube. The other end of the sound output tube is connected to a cone-shaped amplifier.

[0008] Both the sound distribution tube and the sound transmission tube are equipped with movable sound insulation components. The movable sound insulation components include sound insulation blocks. A honeycomb sound-absorbing block is fixedly connected to one side of the sound insulation block. A shape memory alloy driver is fixedly connected to the top of the sound insulation block. The shape memory alloy driver is fixedly connected inside the sound distribution tube and the sound transmission tube.

[0009] Furthermore, a sound outlet groove is provided on the rear side of the inner wall of the bottom shell of the network sound column, and a strip-shaped sound guide block is fixedly connected inside the sound outlet groove. The front of the strip-shaped sound guide block is connected to the cone-shaped amplifier.

[0010] Furthermore, both the sound distribution pipe and the sound transmission pipe are fixedly connected to a sound guide plate, which is located on the front of the sound insulation block.

[0011] Furthermore, the other end of the spiral sound guide tube is connected to a passive diaphragm, and a sound outlet is provided on the inner side of the inner wall of the network sound column base shell. The passive diaphragm is embedded and fixedly connected inside the network sound column base shell and is located inside the sound outlet.

[0012] Furthermore, the surfaces of both the sound distribution pipe and the sound transmission pipe are wrapped with sound-insulating cotton, and the outer side of the sound-insulating cotton is wrapped with an elastic tube.

[0013] Furthermore, the inner wall of the cone-shaped loudspeaker is provided with micro sound-absorbing holes.

[0014] Furthermore, the inner walls of both the sound distribution tube and the sound transmission tube are coated with a sound guiding layer, and the connection end between the four-way sound guide tube and the loudspeaker is wrapped with a sealing ring.

[0015] Furthermore, the surface of the strip-shaped sound guide block is covered with a dust filter, and a sealing ring is wrapped between the sound transmission tube and the cone-shaped amplifier.

[0016] Beneficial effects

[0017] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0018] I. This utility model, through the setting of a cavity structure body, a loudspeaker, a network sound column bottom shell, a network sound column top shell, a sound guiding and conveying component, and a movable sound insulation component, etc., through the connection design of the four-way sound guide tube, the sound distribution tube, and the spiral sound guide tube, and the linkage between the shape memory alloy driver and the sound insulation block, allows the sound waves emitted by the loudspeaker to be guided to the side and rear side through the sound guiding and conveying component. At the same time, the movable sound insulation component adjusts the sound transmission path and volume, thereby achieving the effect of avoiding the obstruction of the sound outlet during use, effectively improving the sound cavity sound production efficiency and reducing noise interference.

[0019] II. This utility model, by setting up components such as a network sound column base shell, a sound outlet groove, a strip-shaped sound guide block, and a cone-shaped amplifier, and through the through-fitting of the sound outlet groove on the rear side of the inner wall of the network sound column base shell with the strip-shaped sound guide block, and the interconnected design of the strip-shaped sound guide block and the cone-shaped amplifier, enables the sound waves emitted by the cone-shaped amplifier to be accurately guided to the sound outlet position through the strip-shaped sound guide block, thereby achieving the effect of ensuring effective sound transmission and optimizing the sound field distribution.

[0020] Third, this utility model, by setting up components such as a spiral sound guide tube, a passive diaphragm, and a sound outlet hole in the bottom shell of the network sound column, and through the connection structure between the spiral sound guide tube and the passive diaphragm, and the embedded cooperation between the passive diaphragm and the sound outlet hole in the bottom shell of the network sound column, enables low-frequency sound waves to enhance their amplitude through the vibration of the passive diaphragm, thereby achieving the effect of improving bass effect and improving sound quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0024] Figure 3 This is a further disassembled schematic diagram of the present invention;

[0025] Figure 4 This is a partial disassembled schematic diagram of the present invention;

[0026] Figure 5This is a schematic diagram of the movable sound insulation component of this utility model;

[0027] Figure 6 For the present utility model Figure 3 Enlarged diagram of point A in the middle.

[0028] Reference numerals: 1. Cavity structure body; 2. Loudspeaker; 3. Network speaker column bottom shell; 4. Network speaker column top shell; 5. Sound guiding and conveying assembly; 51. Four-way sound guide tube; 52. Sound distribution tube; 53. Spiral sound guide tube; 54. Sound transmission tube; 55. Conical amplifier; 6. Movable sound insulation assembly; 61. Sound insulation block; 62. Honeycomb sound absorbing block; 63. Shape memory alloy driver; 7. Sound outlet groove; 8. Strip-shaped sound guide groove block; 9. Sound guide plate; 10. Passive diaphragm; 11. Sound outlet hole; 12. Sound insulation cotton; 13. Elastic tube; 14. Miniature sound absorption hole; 16. Sound guiding layer; 17. Sealing ring; 18. Dustproof filter; 19. Sealing ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] See attached document Figure 1-6A side-exit sound cavity structure includes: a cavity structure body 1, a loudspeaker 2, a network sound column bottom shell 3, and a network sound column top shell 4. The loudspeaker 2 is fixedly connected inside the cavity structure body 1. The cavity structure body 1 is fixedly connected to the front side of the bottom surface inside the network sound column bottom shell 3. The bottom of the network sound column top shell 4 is fixedly connected to the top of the network sound column bottom shell 3. The sound-emitting end of the loudspeaker 2 is connected to a sound guiding and conveying assembly 5. The sound guiding and conveying assembly 5 includes a four-way sound guide tube 51. The two outermost ends of the four-way sound guide tube 51 are each connected to a sound splitter tube 52. The other end of the sound splitter tube 52 is connected to a spiral sound guide tube 53. The other end of the four-way sound guide tube 51 is connected to a sound output tube 54. The other end of the sound output tube 54 is connected to a cone-shaped amplifier 55. The sound splitter tube 52 and... Each sound-transmitting pipe 54 is equipped with a movable sound insulation component 6. The movable sound insulation component 6 includes a sound insulation block 61. A honeycomb sound-absorbing block 62 is fixedly connected to one side of the sound insulation block 61. A shape memory alloy driver 63 is fixedly connected to the top of the sound insulation block 61. The shape memory alloy driver 63 is fixedly connected inside the sound distribution pipe 52 and the sound-transmitting pipe 54. The sound-conducting and conveying component 5, which consists of a four-way sound guide pipe 51, a sound distribution pipe 52, a spiral sound guide pipe 53, a sound-transmitting pipe 54, and a cone-shaped amplifier 55, directs the sound emitted by the speaker 2 to the side and rear. At the same time, the sound insulation block 61 and the honeycomb sound-absorbing block 62 are driven by the shape memory alloy driver 63 in the movable sound insulation component 6, which can adjust the sound transmission path and volume, realize side sound output and reduce noise interference.

[0032] A sound outlet groove 7 is provided on the rear side of the inner wall of the network speaker base shell 3. A strip-shaped sound guide block 8 is fixedly connected inside the sound outlet groove 7. The front of the strip-shaped sound guide block 8 is connected to the cone-shaped amplifier 55. The sound outlet groove 7 on the rear side of the inner wall of the network speaker base shell 3 cooperates with the strip-shaped sound guide block 8 to further guide the sound output from the cone-shaped amplifier 55 to the sound outlet position, ensuring effective sound transmission. Sound guide plates 9 are fixedly connected inside the sound distribution tube 52 and the sound output tube 54. The sound guide plates 9 are located on the front of the sound insulation block 61. The sound guide plates 9 inside the sound distribution tube 52 and the sound output tube 54 are set with On the front of the sound insulation block 61, the direction of sound waves can be guided, the sound transmission path can be optimized, and the sound guiding efficiency can be improved. The other end of the spiral sound guide tube 53 is connected to the passive diaphragm 10. The inner side of the inner wall of the network sound column base shell 3 is provided with a sound outlet hole 11. The passive diaphragm 10 is embedded and fixedly connected to the inside of the network sound column base shell 3 and is located inside the sound outlet hole 11. The spiral sound guide tube 53 is connected to the passive diaphragm 10. The passive diaphragm 10 is embedded inside the sound outlet hole 11 of the network sound column base shell 3, which can enhance the vibration of low frequency sound waves and improve the bass effect. At the same time, the sound is exported through the side sound outlet hole 11.

[0033] The surfaces of the sound distribution tube 52 and the sound transmission tube 54 are both wrapped with sound-insulating cotton 12, and the outer side of the sound-insulating cotton 12 is wrapped with an elastic tube 13. The sound insulation cotton 12 and the elastic tube 13 wrapped on the surfaces of the four-way sound guide tube 51, the sound distribution tube 52 and the sound transmission tube 54 can reduce noise leakage during sound transmission, protect the sound guide tubes and improve the purity of sound quality. The inner wall of the cone-shaped loudspeaker 55 is provided with micro sound-absorbing holes 14, which can absorb excess noise. The inner walls of the sound distribution tube 52 and the sound transmission tube 54 are coated with a sound-guiding layer 16. The connection between the four-way sound guide tube 51 and the loudspeaker 2 is... The end is wrapped with a sealing ring 17. The sound guiding layer 16 on the inner wall of the sound distribution tube 52 and the sound transmission tube 54 can reduce sound wave reflection loss. The sealing ring 17 at the connection end of the four-way sound guide tube 51 and the speaker 2 can prevent sound leakage and ensure the sealing and stability of sound transmission. The surface of the strip-shaped sound guide block 8 is covered with a dust filter 18. A sealing ring 19 is wrapped between the sound transmission tube 54 and the cone-shaped amplifier 55. The dust filter 18 on the surface of the strip-shaped sound guide block 8 can prevent dust from entering the cavity. The sealing ring 19 between the sound transmission tube 54 and the cone-shaped amplifier 55 can ensure a tight connection and avoid sound leakage and impurity intrusion.

[0034] Working principle: When the device is started, the speaker 2 starts to work and generate sound waves. The sound waves first enter the four-way sound guide tube 51 connected to the sound-emitting end of the speaker 2. The four-way sound guide tube 51 divides the sound waves into three parts. The two outer ends are connected to the spiral sound guide tube 53 through the sound split tube 52, and the other end is connected to the cone amplifier 55 through the sound output tube 54. In the sound split tube 52 and the sound output tube 54, the sound guide plate 9 guides the direction of the sound waves and optimizes the transmission path. At the same time, the shape memory alloy driver 63 can drive the sound insulation block 61 and the honeycomb sound absorption block 62 as needed. By adjusting the position of the sound insulation block 61 in the sound split tube 52 and the sound output tube 54, the sound transmission path and volume can be controlled, thereby reducing noise interference.

[0035] When sound propagates through the sound distribution tube 52 and the sound transmission tube 54, the sound insulation cotton 12 and the elastic tube 13 wrapped around their surfaces will play a role in reducing sound leakage and protecting the sound transmission tubes. The sound waves exported from the sound distribution tube 52 are conducted to the passive diaphragm 10 through the spiral sound transmission tube 53. The passive diaphragm 10 is embedded inside the sound outlet hole 11 of the bottom shell 3 of the network sound column. It enhances the amplitude of low-frequency sound waves through vibration, improves the bass effect, and finally is exported from the sound outlet hole 11. The sound waves exported from the sound transmission tube 54 are diffused through the cone-shaped amplifier 55. The micro sound-absorbing holes 14 on the inner wall of the cone-shaped amplifier 55 can absorb excess noise. Then the sound waves are accurately transmitted to the sound outlet position under the guidance of the sound outlet groove 7 on the rear side of the inner wall of the bottom shell 3 of the network sound column through the strip-shaped sound guide block 8 connected to it.

[0036] In addition, to ensure the stability and purity of sound transmission, the sound-guiding layer 16 on the inner wall of the sound distribution tube 52 and the sound transmission tube 54 can reduce sound wave reflection loss. The sealing ring 17 at the connection end of the four-way sound guide tube 51 and the speaker 2, and the sealing ring 19 between the sound transmission tube 54 and the cone amplifier 55 can prevent sound leakage. The dust filter 18 on the surface of the strip sound guide block 8 can block dust from entering the cavity. Finally, the sound is effectively discharged through the sound outlet 11 on the side and the sound outlet groove 7 on the rear side, avoiding the obstruction of sound output by obstacles during equipment installation, and improving the sound cavity's sound production efficiency and auditory experience.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A side-exit acoustic cavity structure, comprising a cavity structure body (1), a loudspeaker (2), a network sound column bottom shell (3), and a network sound column top shell (4), characterized in that: The cavity structure body (1) is fixedly connected to a loudspeaker (2). The cavity structure body (1) is fixedly connected to the front side of the bottom surface of the network sound column base shell (3). The bottom of the network sound column top shell (4) is fixedly connected to the top of the network sound column base shell (3). The sound-emitting end of the loudspeaker (2) is connected to a sound guiding and conveying assembly (5). The sound guiding and conveying assembly (5) includes a four-way sound guide tube (51). The two outermost ends of the four-way sound guide tube (51) are connected to a sound splitting tube (52). The other end of the sound splitting tube (52) is connected to a spiral sound guide tube (53). The other end of the four-way sound guide tube (51) is connected to a sound output tube (54). The other end of the sound output tube (54) is connected to a cone-shaped amplifier (55). The sound distribution tube (52) and the sound transmission tube (54) are both equipped with movable sound insulation components (6). The movable sound insulation components (6) include sound insulation blocks (61). A honeycomb sound-absorbing block (62) is fixedly connected to one side of the sound insulation block (61). A shape memory alloy driver (63) is fixedly connected to the top of the sound insulation block (61). The shape memory alloy driver (63) is fixedly connected inside the sound distribution tube (52) and the sound transmission tube (54).

2. The side-exit acoustic cavity structure according to claim 1, characterized in that, The inner wall of the bottom shell (3) of the network sound column is provided with a sound outlet groove (7) on the rear side. A strip-shaped sound guide block (8) is fixedly connected inside the sound outlet groove (7). The front of the strip-shaped sound guide block (8) is connected to the cone-shaped amplifier (55).

3. The side-exit acoustic cavity structure according to claim 1, characterized in that, The sound guide plate (9) is fixedly connected inside both the sound distribution pipe (52) and the sound transmission pipe (54), and the sound guide plate (9) is set on the front of the sound insulation block (61).

4. The side-exit acoustic cavity structure according to claim 1, characterized in that, The other end of the spiral sound guide tube (53) is connected to a passive diaphragm (10). The inner side of the inner wall of the network sound column base shell (3) is provided with a sound outlet (11). The passive diaphragm (10) is embedded and fixedly connected inside the network sound column base shell (3) and located inside the sound outlet (11).

5. The side-exit acoustic cavity structure according to claim 1, characterized in that, The surfaces of the sound distribution tube (52) and the sound transmission tube (54) are both covered with sound insulation cotton (12), and the outer side of the sound insulation cotton (12) is covered with an elastic tube (13).

6. The side-exit acoustic cavity structure according to claim 1, characterized in that, The inner wall of the cone-shaped loudspeaker (55) is provided with a micro sound-absorbing hole (14).

7. The side-exit acoustic cavity structure according to claim 1, characterized in that, The inner walls of the sound distribution tube (52) and the sound transmission tube (54) are coated with a sound guiding layer (16), and the connection end of the four-way sound guide tube (51) and the loudspeaker (2) is wrapped with a sealing ring (17).

8. A side-exit acoustic cavity structure according to claim 2, characterized in that, The surface of the strip-shaped sound guide block (8) is covered with a dust filter (18), and a sealing ring (19) is wrapped between the sound transmission pipe (54) and the cone-shaped amplifier (55).

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