Sound of embedded inverter tube

Abstract

The utility model aims at providing a kind of sound of embedded inverter tube, including backboard and middle frame, the through hole is opened in the backboard, first recess, second recess, third recess and inner groove are opened in the middle frame, the first recess the second recess and the third recess with the inner groove are respectively located the two sides of the middle frame opposite, the extension direction of the first recess, the extension direction of the second recess and the extension direction of the third recess are all mutually parallel, and the first recess, the second recess and the third recess are sequentially head-to-tail communication, the backboard is used to set on the middle frame, to make the backboard with the first recess, the second recess and the third recess form a S-shaped channel, one end of the S-shaped channel is communicated with the through hole, the other end of the S-shaped channel is communicated with the inner groove.

Description

Technical Field

[0001] This utility model relates to the technical field of audio equipment manufacturing, and in particular to an audio equipment with an embedded bass reflex port. Background Technology

[0002] In the field of audio equipment, the bass reflex port is a crucial component. Its function is to guide sound waves from inside the speaker enclosure and superimpose them with the sound waves radiated from the front of the speaker, thereby improving low-frequency response and enhancing sound quality. Currently, in almost all bass-reflex speaker systems, whether for home audio, professional audio equipment, or car audio systems, a separate bass reflex port structure needs to be installed inside the enclosure. Currently, in the audio manufacturing process, the bass reflex port is generally installed separately; that is, after the speaker enclosure is formed, a specific process is used to fix the bass reflex port into pre-drilled mounting holes.

[0003] However, existing bass reflex tubes have the following shortcomings in practical use: Because existing bass reflex tubes are assembled separately, an additional step of installing the tube is required in the entire audio production process. This increase in the number of production steps means that every stage, from procurement, transportation, and warehousing to assembly and debugging on the production line, requires investment of manpower, resources, and time, significantly increasing the overall production cost of the audio system. Therefore, this application proposes an embedded bass reflex tube for audio systems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an audio system with an embedded bass reflex tube that does not require separate installation of the bass reflex tube, thereby reducing the number of work steps and lowering production costs.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An embedded bass reflex speaker, comprising:

[0007] Back plate, wherein a through hole is provided on the back plate; and

[0008] The middle frame has a first groove, a second groove, a third groove, and an inner groove. The first groove, the second groove, the third groove, and the inner groove are located on opposite sides of the middle frame. The extension directions of the first groove, the second groove, and the third groove are all parallel to each other, and the first groove, the second groove, and the third groove are connected end to end in sequence. When the back plate is installed on the middle frame, it forms an S-shaped channel with the first groove, the second groove, and the third groove. One end of the S-shaped channel is connected to the through hole, and the other end of the S-shaped channel is connected to the inner groove.

[0009] Optionally, the inner walls of the first groove, the second groove, and the third groove are all smooth.

[0010] Optionally, the cross-sectional areas of the first groove, the second groove, and the third groove are all the same.

[0011] Optionally, the second groove includes a straight section and two arc-shaped sections, one end of each of the two arc-shaped sections is connected to both ends of the straight section, and the ends of the two arc-shaped sections away from the straight section are respectively connected to the first groove and the third groove.

[0012] Optionally, the middle frame is further provided with a surrounding groove, which is formed along the outline of the first groove, the second groove and the third groove that are connected end to end in sequence.

[0013] Optionally, the back plate is provided with a convex rail, the outline of which is consistent with the outline of the surrounding groove, and the convex rail is used to insert into the surrounding groove.

[0014] Optionally, the speaker of the embedded bass reflex tube also includes a panel, which is disposed on the side of the middle frame away from the back panel. The panel and the inner groove together form an inner cavity, and the S-shaped channel communicates with the inner cavity.

[0015] Optionally, the middle frame is also provided with a through hole, the two ends of which are respectively connected to the S-shaped channel and the inner cavity.

[0016] Optionally, the embedded bass reflex port also includes a speaker, which is disposed on the panel and one side of the speaker is located inside the cavity, with one end of the perforation close to the speaker.

[0017] Optionally, the panel has a circular hole, and one end of the speaker extends from the side of the panel away from the mid-frame through the circular hole.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This invention relates to an embedded bass reflex speaker. An S-shaped groove structure is formed by sequentially opening a first, second, and third groove on the middle frame. A back plate is then placed on the middle frame, making the S-shaped groove structure an S-shaped channel. The two ends of the S-shaped channel can connect to through holes on the back plate and an inner groove on the middle frame, respectively, to form the bass reflex tube. This eliminates the need for a separate bass reflex tube installation step during speaker production, thus reducing production costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embedded bass reflex speaker according to one embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a portion of the structure of an embedded bass reflex tube speaker according to one embodiment of the present invention.

[0023] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0024] Figure 4 This is a schematic diagram of the structure of the middle frame according to one embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the back plate according to one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Embedded bass reflex port speaker; 10. Back panel; 11. Through hole; 12. Raised rail; 20. Middle frame; 21. First groove; 22. Second groove; 220. Straight section; 221. Curved section; 23. Third groove; 24. Inner groove; 25. Perforation; 26. Surrounding groove; 30. Panel; 40. Speaker. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0029] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0032] like Figures 1 to 5 As shown, in one embodiment, an embedded bass reflex speaker 1 includes a back plate 10 and a middle frame 20. The back plate 10 has a through hole 11, and the middle frame 20 has a first groove 21, a second groove 22, a third groove 23, and an inner groove 24. The first groove 21, the second groove 22, and the third groove 23 and the inner groove 24 are respectively located on opposite sides of the middle frame 20. The extension directions of the first groove 21, the second groove 22, and the third groove 23 are all parallel to each other, and the first groove 21, the second groove 22, and the third groove 23 are connected end to end in sequence. When the back plate 10 is installed on the middle frame 20, the back plate 10, the first groove 21, the second groove 22, and the third groove 23 together form an S-shaped channel. One end of the S-shaped channel is connected to the through hole 11, and the other end of the S-shaped channel is connected to the inner groove 24.

[0033] It should be noted that the first groove 21, the second groove 22, and the third groove 23 are located on opposite sides of the inner groove 24 of the middle frame 20. The extension directions of the first groove 21, the second groove 22, and the third groove 23 are all parallel to each other. One end of the first groove 21 is connected to the end of the second groove 22 on the same side, and the end of the second groove 22 away from the first groove 21 is connected to the end of the third groove 23 on the same side. Thus, the first groove 21, the second groove 22, and the third groove 23 are connected end to end in an S-shaped structure. Further, the S-shaped structure is an integrally formed groove-like structure that is recessed inward relative to the outer surface of the middle frame 20. Further, the area and shape of the back plate 10 are consistent with the area and shape of one side of the middle frame 20, so that when the back plate 10 is disposed on one side of the middle frame 20, the back plate 10 can completely cover one side of the middle frame 20. Furthermore, when the back panel 10, with the through hole 11 installed on the middle frame 20, for example, when the back panel 10 is screwed to the middle frame 20, the back panel 10 covers the S-shaped structure relative to the middle frame 20, thus forming an S-shaped channel together with the S-shaped structure on one side. Furthermore, the through hole 11 is aligned with one end of the S-shaped structure, so that when one side of the back panel 10 forms the S-shaped channel, the through hole 11 is located at the end of the S-shaped channel, allowing one end of the S-shaped channel to communicate with the external environment through the through hole 11, while the end of the S-shaped channel away from the through hole 11 communicates with the inner bottom wall of the inner groove 24, allowing the inner groove 24 to communicate with the external environment through the S-shaped channel. This eliminates the need for a separate installation process for the bass reflex port during speaker production, reducing production costs.

[0034] It's important to note that the core function of a bass reflex port is to use the resonance of the air column within the port to reverse the phase of the sound waves on the back of the speaker diaphragm, making them superimposed on the sound waves on the front. This reversed sound wave then radiates into the external environment, thereby increasing the low-frequency response and enhancing the bass effect. Furthermore, the S-shaped structure of the bass reflex port, compared to a straight cylindrical structure, increases the equivalent acoustic length within a limited space, resulting in a longer sound wave propagation path, lower tuning frequency, and extended low-frequency response. This allows for a lower low-frequency response to be achieved within a smaller speaker enclosure.

[0035] like Figures 2 to 3 As shown, in one embodiment, the inner walls of the first groove 21, the second groove 22, and the third groove 23 are all smooth.

[0036] It should be noted that when the back plate 10 is mounted on the middle frame 20, it forms an S-shaped channel together with the first groove 21, the second groove 22, and the third groove 23, ensuring that the inner walls of the S-shaped channel are all smooth. Furthermore, when the diaphragm of the speaker 40 moves, it compresses or expands the air inside the enclosure, generating airflow within the S-shaped channel. The smooth inner walls of the S-shaped channel allow for smooth airflow, reducing turbulence and thus lowering noise.

[0037] like Figures 2 to 3 As shown, in one embodiment, the cross-sectional areas of the first groove 21, the second groove 22, and the third groove 23 are all the same.

[0038] It should be noted that the depth and width of the first groove 21, the second groove 22, and the third groove 23 are all consistent, ensuring that the cross-sectional area of ​​the S-shaped channel formed by them is equal at any position. This results in a uniform distribution of airflow velocity, ensuring uniform sound wave impedance and more accurate bass response.

[0039] like Figures 2 to 3 As shown, in one embodiment, the second groove 22 includes a straight section 220 and two arc-shaped sections 221. One end of each of the two arc-shaped sections 221 is connected to both ends of the straight section 220, and the ends of the two arc-shaped sections 221 away from the straight section 220 are connected to the first groove 21 and the third groove 23, respectively.

[0040] It should be noted that the extension direction of the straight section 220 is parallel to the extension directions of the first groove 21 and the third groove 23. One end of each of the two arc-shaped sections 221 is connected to both ends of the straight section 220, while the other ends of each arc-shaped section 221 are connected to the first groove 21 and the third groove 23, respectively, so that the first groove 21, the straight section 220, and the third groove 23 are connected end-to-end to form an S-shaped structure. Furthermore, the cross-sectional area of ​​the arc-shaped section 221 is the same as that of the straight section 220, ensuring that the cross-sectional area is equal at any position in the S-shaped channel.

[0041] like Figures 2 to 3 As shown, in one embodiment, the middle frame 20 is further provided with a surrounding groove 26, which is provided along the contour of the first groove 21, the second groove 22 and the third groove 23 connected end to end in sequence.

[0042] It should be noted that the first groove 21, the second groove 22, and the third groove 23 are connected end to end to form an S-shaped groove structure. The surrounding groove 26 is opened along the outline of the S-shaped structure so that the surrounding groove 26 surrounds the opening of the S-shaped structure.

[0043] like Figure 5As shown, in one embodiment, a protruding rail 12 is provided on the back plate 10. The protruding rail 12 is consistent with the contour of the surrounding groove 26 and is used to fit into the surrounding groove 26.

[0044] It should be noted that the convex rail 12 has a closed-loop structure with its ends adjacent to each other and protruding from one side of the back plate 10. Furthermore, a through hole 11 is formed on the back plate 10 and is located inside the convex rail 12. Specifically, the convex rail 12 is connected end-to-end to surround the through hole 11. When the back plate 10 is mounted on the middle frame 20, the convex rail 12 can be fully fitted into the surrounding groove 26 to seal the S-shaped channel, thereby allowing airflow to enter or exit through the through hole 11.

[0045] like Figures 1 to 2 , Figure 4 As shown, in one embodiment, the speaker 1 with the embedded bass reflex tube also includes a panel 30, which is disposed on the side of the middle frame 20 away from the back plate 10. The panel 30 and the inner groove 24 together form an inner cavity, and the S-shaped channel communicates with the inner cavity.

[0046] It should be noted that the panel 30 is disposed on the side of the middle frame 20 away from the back panel 10, so that the panel 30 seals the inner groove 24 to form an inner cavity. When the panel 30 is disposed on the middle frame 20 and together with the inner groove 24 to form the inner cavity, since one end of the S-shaped channel is connected to the inner bottom wall of the inner groove 24, one end of the S-shaped channel is connected to the inner cavity. Thus, the inner cavity can be connected to the external environment through the S-shaped channel.

[0047] like Figure 4 As shown, in one embodiment, the middle frame 20 is also provided with a through hole 25, and the two ends of the through hole 25 are respectively connected to the S-shaped channel and the inner cavity.

[0048] It should be noted that one end of the perforation 25 is connected to the end of the first groove 21 that is away from the second groove 22, and the other end of the perforation 25 is connected to the inner cavity, so that the S-shaped channel can be connected to the inner cavity.

[0049] like Figures 1 to 2 As shown, in one embodiment, the audio 1 with the embedded bass reflex tube also includes a speaker 40, which is disposed on the panel 30, with one side of the speaker 40 located inside the cavity, and one end of the perforation 25 close to the speaker 40.

[0050] It should be noted that the speaker 40 is disposed on the side of the panel 30 near the inner groove 24, so that the back of the speaker 40 is located inside the inner cavity. Furthermore, the perforation 25 connects to the inner cavity and is close to the back of the speaker 40, so that the sound waves on the back of the speaker 40 diaphragm can quickly enter the S-shaped channel through the perforation 25.

[0051] like Figure 2As shown, in one embodiment, the panel 30 has a circular hole, and one end of the speaker 40 extends from the side of the panel 30 away from the middle frame 20 through the circular hole.

[0052] It should be noted that a circular hole is provided on the panel 30, and the speaker 40 is coaxially aligned with the circular hole, so that the front of the speaker 40 can extend from the side of the panel 30 away from the inner groove 24 through the circular hole.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A speaker with an embedded bass reflex port, characterized in that, include: Back plate, wherein a through hole is provided on the back plate; and The middle frame has a first groove, a second groove, a third groove, and an inner groove. The first groove, the second groove, the third groove, and the inner groove are located on opposite sides of the middle frame. The extension directions of the first groove, the second groove, and the third groove are all parallel to each other, and the first groove, the second groove, and the third groove are connected end to end in sequence. When the back plate is installed on the middle frame, it forms an S-shaped channel with the first groove, the second groove, and the third groove. One end of the S-shaped channel is connected to the through hole, and the other end of the S-shaped channel is connected to the inner groove.

2. The audio system with an embedded bass reflex port according to claim 1, characterized in that, The inner walls of the first groove, the second groove, and the third groove are all smooth.

3. The speaker with an embedded bass reflex port according to claim 2, characterized in that, The cross-sectional areas of the first groove, the second groove, and the third groove are all the same.

4. The audio system with an embedded bass reflex port according to claim 3, characterized in that, The second groove includes a straight section and two arc-shaped sections. One end of each of the two arc-shaped sections is connected to both ends of the straight section, and the ends of the two arc-shaped sections away from the straight section are connected to the first groove and the third groove, respectively.

5. The audio system with an embedded bass reflex port according to claim 4, characterized in that, The middle frame is also provided with a surrounding groove, which is formed along the outline of the first groove, the second groove and the third groove that are connected end to end in sequence.

6. The audio system with an embedded bass reflex port according to claim 5, characterized in that, The back plate is provided with a convex rail, the outline of which is consistent with the outline of the surrounding groove, and the convex rail is used to fit into the surrounding groove.

7. The audio system with an embedded bass reflex port according to claim 6, characterized in that, The speaker with the embedded bass reflex tube also includes a panel, which is located on the side of the middle frame away from the back panel. The panel and the inner groove together form an inner cavity, and the S-shaped channel communicates with the inner cavity.

8. The audio system with an embedded bass reflex port according to claim 7, characterized in that, The middle frame is also provided with a through hole, and the two ends of the through hole are respectively connected to the S-shaped channel and the inner cavity.

9. The audio system with an embedded bass reflex port according to claim 8, characterized in that, The embedded bass reflex tube also includes a speaker, which is disposed on the panel and one side of the speaker is located inside the cavity, with one end of the perforation close to the speaker.

10. The audio system with an embedded bass reflex port according to claim 9, characterized in that, The panel has a circular hole, and one end of the speaker extends from the side of the panel away from the middle frame through the circular hole.

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