Sound amplification structure and loudspeaker

Abstract

The utility model relates to the technical field of loudspeakers, in particular to a sound amplification structure and a loudspeaker. The sound amplification structure comprises a sound amplification seat, the sound amplification seat comprises a sound outlet and a plurality of sound inlets which are arranged oppositely in a first direction, the sound inlets are used for being communicated with a sound cavity of a loudspeaker, the sound inlets are arranged around the sound outlet, a sound amplification channel is arranged in the sound amplification seat, and the sound amplification channel comprises a reflection section and a plurality of sound guide sections. The plurality of sound guide sections are located between the reflection section and the plurality of sound inlets, one end of each sound guide section is communicated with one sound inlet, and two ends of the reflection section are respectively communicated with the other end of each sound guide section and the sound outlet. The sound amplification structure not only has a sound amplification function, but also can ensure that sound waves are uniformly dispersed and spread, so that stable and efficient sound wave transmission is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a loudspeaker technical field, especially a sound amplification structure and loudspeaker. BACKGROUND

[0002] The sound amplification loudspeaker in prior art usually is equipped with a sound cavity and a sound amplification channel, the sound cavity is used for accommodating a sound unit, the sound cavity and the sound amplification channel are communicated through a sound inlet, when the sound unit vibrates, sound waves are transmitted into the sound amplification channel through the sound inlet, and then are transmitted to the outside through the sound amplification channel, so that the sound amplification effect is realized.

[0003] However, in the above structure, sound waves enter the sound amplification channel through a single sound inlet at one time, which causes mutual interference of sound waves in the sound amplification channel and makes it difficult to uniformly propagate, thereby affecting the sound amplification effect. SUMMARY

[0004] The technical problem to be solved by the utility model embodiment is to provide a sound amplification structure to solve the problem that sound waves interfere with each other in the sound amplification channel in the prior art, thereby causing poor sound amplification effect.

[0005] In a first aspect, the utility model embodiment provides a sound amplification structure, which comprises:

[0006] The sound amplification seat comprises a sound outlet and a plurality of sound inlets arranged opposite to each other in the first direction, the sound inlets are used for communicating the sound cavity of the loudspeaker, the plurality of sound inlets are arranged around the sound outlet, the sound amplification seat has a sound amplification channel inside, the sound amplification channel comprises a reflection section and a plurality of sound guide sections, the plurality of sound guide sections are located between the reflection section and the plurality of sound inlets, one end of each sound guide section is communicated with one sound inlet, and the other end of each sound guide section is communicated with the sound outlet.

[0007] In an embodiment, the sound amplification seat comprises a base plate and a cover body, the cover body is arranged on the base plate, the plurality of sound inlets are arranged on the side of the base plate away from the cover body, the sound outlet is arranged on the cover body, and the base plate and the cover body jointly define the sound amplification channel.

[0008] In an embodiment, the side of the base plate facing the cover body is provided with a central groove and a plurality of sound guide grooves, the plurality of sound guide grooves are arranged around the central groove, one end of each sound guide groove penetrates the groove wall of the central groove, the other end extends away from the central groove and is communicated with one sound inlet, and the cover body and the plurality of sound guide grooves jointly surround the plurality of sound guide sections.

[0009] In an embodiment, the bottom of the central groove is provided with a reflection protrusion, the cover body comprises a cover plate and a hollow sleeve, the cover plate is used for sealing the slot of the sound guide groove, the hollow sleeve is connected to the side of the cover plate away from the base plate, the sound outlet is arranged on the side of the hollow sleeve away from the base plate, and the reflection protrusion is located in the hollow sleeve.

[0010] In an embodiment, the reflection protrusion has a gradually narrowing trend in the direction away from the bottom of the central groove.

[0011] In an embodiment, the inner wall of the hollow sleeve has a gradually expanding trend in the direction away from the base plate.

[0012] In an embodiment, the connection between the reflection protrusion and the bottom of the central groove has a curved surface.

[0013] In an embodiment, the side of the base plate towards the cover body is further provided with an annular groove, a plurality of sound guide grooves are located in the inner ring of the annular groove, and the annular groove is provided with a sealing member.

[0014] In an embodiment, the sound amplifier further comprises a sound amplification cover arranged on the side of the sound amplifier base provided with the sound outlet, and the sound outlet is located in the sound amplification cover.

[0015] In a second aspect, the utility model further provides a sound amplifier.

[0016] Compared with the prior art, the sound amplifier provided by the utility model has the advantages that the sound amplifier not only has the sound amplification function, but also can ensure uniform dispersion and propagation of sound waves, and realizes stable and efficient sound wave transmission.

[0017] Specifically, the sound waves enter the corresponding sound guide segments through the plurality of sound inlets, and then enter the reflection segment. The plurality of sound inlets and the sound guide segments are arranged to enable the sound waves to be transmitted in independent channels, and the sound waves are effectively isolated before entering the reflection segment, thereby reducing mutual interference between the sound waves during transmission, ensuring that the sound waves do not converge after entering the reflection segment, but continue to maintain their respective propagation paths, avoiding cross interference between the sound waves, and maintaining uniform propagation of the sound waves. BRIEF DESCRIPTION OF DRAWINGS

[0018] The specific implementation of the utility model will be further described in detail below with reference to the drawings and embodiments, and the drawings are as follows:

[0019] Figure 1 is a perspective structural schematic view of the sound amplifier base provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a loudspeaker provided in an embodiment of the present invention, wherein the arrows indicate the transmission path of the sound waves;

[0021] Figure 3 This is a disassembly diagram of the amplifier stand provided in this embodiment of the utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the substrate provided in an embodiment of the present utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the loudspeaker provided in an embodiment of the present utility model.

[0024] The labels for the attached figures are as follows:

[0025] 1000. Loudspeaker;

[0026] 100. Amplification structure;

[0027] 10. Amplifier base; 11. Sound outlet; 12. Sound inlet; 13. Amplification channel; 131. Reflecting section; 132. Sound guiding section; 14. Base plate; 141. Central groove; 1411. Reflective protrusion; 1411a. Curved surface; 142. Sound guiding groove; 143. Annular groove; 15. Cover; 151. Cover plate; 152. Hollow sleeve;

[0028] 20. Loudspeaker cover. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] This utility model embodiment provides a sound amplification structure 100, such as Figure 1 - Figure 3 As shown, the amplification structure 100 includes an amplification base 10, which includes an outlet 11 and multiple inlets 12 arranged opposite each other in a first direction. The inlets 12 are used to connect to the acoustic cavity of the amplifier 1000. The multiple inlets 12 are arranged around the outlet 11. The amplification base 10 has an amplification channel 13 inside. The amplification channel 13 includes a reflection section 131 and multiple guide sections 132. The multiple guide sections 132 are located between the reflection section 131 and the multiple inlets 12, and one end of each guide section 132 is connected to an inlet 12. The two ends of the reflection section 131 are respectively connected to the other end of each guide section 132 and the outlet 11. This application can solve the problem in the prior art where sound waves interfere with each other in the amplification channel 13, resulting in poor amplification effect. This amplification structure 100 not only has amplification function, but also ensures that sound waves are evenly dispersed and propagated, achieving stable and efficient sound wave transmission.

[0031] Specifically, the sound waves enter the corresponding sound guide segments 132 through the plurality of sound inlets 12 respectively, and then enter the reflection segment 131 for sound wave reflection to achieve the sound amplification effect. The plurality of sound inlets 12 and the sound guide segments 132 are arranged to enable the sound waves to be transmitted in independent channels. Before entering the reflection segment 131, the sound guide segments 132 effectively isolate the sound waves from each other to avoid mutual interference during transmission, ensuring that the sound waves do not converge after entering the reflection segment 131 but continue to maintain their respective propagation paths, avoiding cross interference between the sound waves, maintaining uniform propagation of the sound waves, and enhancing the sound amplification effect.

[0032] Referring to Figure 3 In an embodiment, the sound amplification seat 10 includes a base plate 14 and a cover 15. The cover 15 is arranged on the base plate 14. The base plate 14 is provided with a plurality of sound inlets 12 on the side opposite to the cover 15. A sound outlet 11 is arranged on the cover 15. The base plate 14 and the cover 15 jointly define a sound amplification channel 13. In this way, firstly, the base plate 14 and the cover 15 are independent components, which are smaller in size and lighter in weight, facilitating processing by workers. Secondly, the independent components are easy to position, which is conducive to improving processing accuracy. Finally, the plurality of sound inlets 12 and a part of the sound amplification channel 13 are arranged on the base plate 14, and the sound outlet 11 and another part of the sound amplification channel 13 are arranged on the cover 15. By arranging each structural feature on the base plate 14 or the cover 15 separately, each component can be processed independently during processing, which greatly reduces the complexity of processing compared with the embodiment of integral and integrated processing.

[0033] In addition, the base plate 14 and the cover 15 as independent components can better optimize material utilization, reduce waste generation, and reduce production costs.

[0034] The connection mode of the cover 15 and the base plate 14 can be screw connection, buckle connection, riveting or bonding, etc., which is not limited here.

[0035] Referring to Figure 4In an embodiment, the substrate 14 is provided with a central groove 141 and a plurality of sound guiding grooves 142 on a side of the substrate 14 facing the cover 15. The plurality of sound guiding grooves 142 are arranged around the central groove 141, and one end of each of the plurality of sound guiding grooves 142 penetrates a groove wall of the central groove 141, and the other end extends away from the central groove 141 and is connected with an audio inlet 12. The cover 15 and the plurality of sound guiding grooves 142 jointly define a plurality of sound guiding sections 132. In this way, on one hand, the groove walls of the plurality of sound guiding grooves 142 can effectively isolate the sound waves from each other, completely avoiding mutual interference of the sound waves in the transmission process. Moreover, the sound guiding grooves 142 and the cover 15 can limit the transmission direction of the sound waves, so that each sound wave must be transmitted to the target position, i.e., the central groove 141, along a preset path, thereby ensuring the accuracy of the transmission, effectively reducing the scattering of the sound waves in the transmission process, avoiding weakening of the sound waves, and ensuring the intensity of the sound after the sound waves reach the reflection section 131. On the other hand, the sound guiding grooves 142 are directly arranged on the outer surface of the substrate 14, which makes it more convenient to process the plurality of sound guiding grooves 142. Moreover, the plurality of sound guiding grooves 142 can be sealed by the cover 15 to form the plurality of sound guiding sections 132, thereby greatly reducing the processing difficulty of the sound guiding sections 132.

[0036] The number of the sound guiding grooves 142 can be freely adjusted according to design requirements, and is not limited herein. For example, in the present application, the sound guiding grooves 142 are provided in 16. Moreover, the path shape of the sound guiding grooves 142 can also be freely adjusted according to design requirements, and is not limited herein. Preferably, in the present application, each of the sound guiding grooves 142 extends in a corresponding radial direction of the substrate 14, so as to reduce the transmission path, and make the sound reach the target position more quickly.

[0037] Referring to Figure 3 With Figure 4In an embodiment, the bottom of the central groove 141 is provided with a reflecting protrusion 1411, the cover body 15 comprises a cover plate 151 and a hollow sleeve 152, the cover plate 151 is used to seal the opening of the sound guide groove 142, the hollow sleeve 152 is connected to the side of the cover plate 151 away from the base plate 14, the sound outlet 11 is arranged on the side of the hollow sleeve 152 away from the base plate 14, and the reflecting protrusion 1411 is located in the hollow sleeve 152. The central groove 141, the hollow sleeve 152 and the reflecting protrusion 1411 jointly form the reflecting section 131. In this way, the reflecting protrusion 1411 can block the contact between the sound waves, avoid interference and aliasing between the sound waves, change the transmission direction of the sound waves, and make the sound waves transmit to the hollow sleeve 152 after reaching the reflecting protrusion 1411. The hollow sleeve 152 can limit the transmission range of the sound waves, and cooperate with the reflecting protrusion 1411 to make the sound waves transmit in their respective paths while being reflected between the inner wall of the hollow sleeve 152 and the reflecting protrusion 1411, and gradually transmit to the sound outlet 11. The sound waves can improve the propagation effect of the sound, expand the propagation range, reduce the transmission loss, and help to enhance the intensity and clarity of the sound.

[0038] It is worth mentioning that the central groove 141, the hollow sleeve 152 and the reflecting protrusion 1411 jointly form the reflecting section 131, which is simple and reasonable in structure design and is beneficial to processing and manufacturing.

[0039] In an embodiment, the reflecting protrusion 1411 has a gradually narrowing trend in the direction away from the bottom of the central groove 141. In this way, it is beneficial to guide the sound waves to propagate in a specific direction during the reflection process, i.e., to move towards the sound outlet 11, and to gradually gather the sound waves during the propagation process, thereby enhancing the directivity of the sound. In this application, the reflecting protrusion 1411 is conical.

[0040] Further, the inner wall of the hollow sleeve 152 has a gradually expanding trend in the direction away from the base plate 14. It further guides the sound waves to propagate in a specific direction during the reflection process, i.e., to move towards the sound outlet 11, and controls the propagation route of the sound waves by gradually increasing the distance between the reflecting protrusion 1411 and the inner wall of the hollow sleeve 152 in the sound emitting direction of the sound outlet 11, thereby more accurately guiding and controlling the sound waves, optimizing the propagation effect of the sound, and improving the clarity and intensity of the sound.

[0041] In an embodiment, the connection between the reflection protrusion 1411 and the bottom of the central groove 141 has a curved surface 1411a. In this way, each sound wave is transmitted from the sound guide groove 142 into the central groove 141 and contacts the corresponding curved surface 1411a. The curved surface 1411a can better guide the sound wave to be reflected to the inner wall of the hollow sleeve 152, ensuring the accuracy of the sound wave transmission in the reflection section 131.

[0042] With reference to Figure 2 In an embodiment, the side of the substrate 14 facing the cover 15 is also provided with an annular groove 143, and the sound guide grooves 142 are located in the inner circle of the annular groove 143, and the annular groove 143 is filled with a sealing member. In this way, the annular groove 143 can position and fix the sealing member, ensuring the sealing between the substrate 14 and the cover 15, preventing sound leakage in the sound guide section 132, and ensuring the stability and reliability of the sound amplification. Specifically, the sealing member can be glue or an elastic sealing ring.

[0043] With reference to Figure 5 In an embodiment, the sound amplification structure 100 further includes a sound amplification cover 20, which is arranged on the side of the sound amplification base 10 provided with the sound outlet 11, and the sound outlet 11 is located in the sound amplification cover 20. In this way, the sound amplification cover 20 can enlarge the transmission distance of the sound wave, enhance the distribution and coverage of the sound, and make the sound propagate to a farther distance.

[0044] The utility model embodiment further provides a sound amplifier 1000. The sound amplifier 1000 includes the sound amplification structure 100 of each embodiment described above. The sound amplifier 1000 not only can enhance the intensity and clarity of the sound, but also can ensure the stability and efficiency of the sound in the propagation process. Specifically, the sound amplifier 1000 further includes a base 200, and the sound amplification structure 100 is arranged on the base 200 to jointly enclose a sound cavity with the base 200.

[0045] It should be understood that the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently. All these modifications and replacements should belong to the protection scope of the claims of the utility model.

Claims

1. A sound amplification structure, characterized in that, include: A loudspeaker base includes an outlet and multiple inlets arranged opposite each other in a first direction. The inlets are used to connect to the acoustic cavity of a loudspeaker. The multiple inlets are arranged around the outlet. The loudspeaker base has an amplification channel inside. The amplification channel includes a reflective section and multiple guiding sections. The multiple guiding sections are located between the reflective section and the multiple inlets. One end of each guiding section is connected to an inlet. The two ends of the reflective section are respectively connected to the other end of each guiding section and the outlet.

2. The amplification structure according to claim 1, characterized in that, The amplifier base includes a base plate and a cover. The cover is disposed on the base plate. A plurality of sound inlets are disposed on the side of the base plate facing away from the cover. The sound outlet is disposed on the cover. The base plate and the cover together define the amplifier channel.

3. The amplification structure according to claim 2, characterized in that, The substrate has a central groove and several sound guide grooves on the side facing the cover. The several sound guide grooves are arranged around the central groove, and one end of the several sound guide grooves passes through the groove wall of the central groove, while the other end extends away from the central groove and connects to a sound inlet. The cover and the several sound guide grooves together form several sound guide segments.

4. The amplification structure according to claim 3, characterized in that, The bottom of the central groove is provided with a reflective protrusion. The cover includes a cover plate and a hollow sleeve. The cover plate is used to seal the opening of the sound guide groove. The hollow sleeve is connected to the side of the cover plate away from the substrate. The sound outlet is located on the side of the hollow sleeve away from the substrate. The reflective protrusion is located in the hollow sleeve. The central groove, the hollow sleeve, and the reflective protrusion together enclose the reflective section.

5. The amplification structure according to claim 4, characterized in that, The reflective protrusions gradually narrow in the direction away from the bottom of the central groove.

6. The amplification structure according to claim 4, characterized in that, The inner wall of the hollow sleeve has a gradually expanding tendency in the direction away from the substrate.

7. The amplification structure according to claim 4, characterized in that, The connection between the reflective protrusion and the bottom of the central groove has an arc surface.

8. The amplification structure according to any one of claims 3-7, characterized in that, The substrate is also provided with an annular groove on the side facing the cover, and a plurality of sound guide grooves are located in the inner circle of the annular groove, and the annular groove is equipped with a sealing element.

9. The amplification structure according to any one of claims 1-7, characterized in that, It also includes a loudspeaker cover, which is installed on the side of the loudspeaker base where the sound outlet is located, and the sound outlet is located in the loudspeaker cover.

10. A loudspeaker, characterized in that, It includes the amplification structure described in any one of claims 1-9.

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