Bass reflex system

Abstract

A bass reflex system, relating to the technical field of sound devices. The bass reflex system comprises a housing assembly, an elastic member, and a pressure adjustment assembly; the housing assembly comprises a transducer and a first housing; a first cavity is formed in the first housing, and the first cavity is provided with a first open end and a second open end; the transducer is sealedly arranged at the first open end; the elastic member is sealedly arranged at the second open end; the pressure adjustment assembly is connected to the first housing and a second cavity is formed between the pressure adjustment assembly and the elastic member; and Tesla channels are formed in the pressure adjustment assembly, one end of each Tesla channel is communicated with the second cavity, and the other end of the Tesla channel is communicated with the outside of the bass reflex system. By using the bass reflex system, the airflow is finally discharged out of the housing assembly in a required posture and at a rate greater than the traditional rate, and is coupled to the external space to output low-frequency energy, so that the bass reflex capability and effect are improved.

Description

Bass reflex system Technical Field

[0001] The invention belongs to the technical field of sound devices, and in particular relates to a bass reflex system. Background Art

[0002] As we all know, speaker systems used in home hi-fi, music recording, stage performances, and other occasions typically consist of a transducer (speaker unit or motor), a cabinet structure (bass reflex system), and electronics (including a crossover network and power amplifier). For speaker system designers, once the appropriate transducer is selected, they can begin designing the entire speaker system. Choosing the cabinet structure is the most important and challenging part of building a speaker system. This is because, in addition to the sound quality of the transducer itself, the system's ultimate sound quality, especially in the low-frequency range, depends almost entirely on the designed cabinet structure. The cabinet structure is essentially built around the bass reflex system, so each cabinet structure is also composed of a specific bass reflex system. Current cabinet structures have poor bass reflex capabilities and effects, which in turn reduces the user experience.

[0003] Summary of the Invention

[0004] The purpose of the present invention is to at least solve the problem of poor bass reflection effect of existing box structures. This purpose is achieved through the following technical solutions:

[0005] A first aspect of the present invention provides a bass reflex system comprising:

[0006] A housing assembly, the housing assembly comprising a transducer and a first housing, the first housing having a first cavity therein, the first cavity having a first open end and a second open end, the transducer being sealed at the first open end;

[0007] an elastic member, the elastic member being sealed at the second opening end;

[0008] A pressure regulating assembly is connected to the first shell and forms a second cavity with the elastic member. The pressure regulating assembly has a Tesla channel, one end of the Tesla channel is connected to the second cavity, and the other end of the Tesla channel is connected to the outside of the bass reflex system.

[0009] By using the bass reflex system in the present technical solution, a combined structure of a shell component, an elastic part and a pressure regulating component is adopted. The transducer of the shell component can receive audio signals and generate vibrations, and drive the air in the first cavity in the first shell. At the same time, the vibrating air will drive the elastic part at the second open end of the first cavity. The elastic part can relay the energy of the air vibration in the first cavity to the second cavity, and then generate a new vibrating airflow in the second cavity, which is then transmitted to the outside of the bass reflex system through the Tesla channel. Since the structure of the Tesla channel has the effect of unidirectional acceleration or unidirectional deceleration, in order to achieve the purpose of pressure regulation of the airflow, the airflow will finally be discharged from the bass reflex system in the required posture and at a higher rate than the traditional rate, and coupled with the external space to output low-frequency energy, thereby improving the bass reflex ability and effect.

[0010] In addition, the bass reflex system according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the pressure regulating assembly includes a first pressure regulating member and a sealing plate, the first pressure regulating member is arranged at the second opening end, the elastic member is arranged between the first pressure regulating member and the first shell, the first pressure regulating member and the elastic member are combined to form the second cavity, the sealing plate is arranged on the side of the first pressure regulating member away from the elastic member, and forms the Tesla channel between the sealing plate and the first pressure regulating member.

[0012] In some embodiments of the present invention, the Tesla channel includes a first pressure regulating region and a second pressure regulating region, wherein the first pressure regulating region and the second pressure regulating region are arranged adjacent to each other along a first direction;

[0013] The first pressure regulating zone is used to accelerate the airflow flowing from the second cavity to the outside world, and to decelerate the airflow flowing from the outside world to the second cavity. The second pressure regulating zone is used to decelerate the airflow flowing from the second cavity to the outside world, and to accelerate the airflow flowing from the outside world to the second cavity. The first direction is the length direction or the width direction of the sealing plate.

[0014] In some embodiments of the present invention, the second cavity includes a vibration cavity portion and a filter layer portion that are connected to each other. Along the direction of airflow flowing from the first cavity toward the outside of the bass reflex system, the filter layer portion is located at the end of the second cavity, the sealing plate is provided at the end of the Tesla channel away from the filter layer portion, the elastic member is provided at the end of the vibration cavity portion away from the filter layer portion, the filter layer portion is connected to the vibration cavity portion and the Tesla channel, and a first filter element is provided in the filter layer portion.

[0015] In some embodiments of the present invention, a plurality of the first filter elements are provided, and the plurality of the first filter elements are spaced apart and arranged in parallel along a second direction, where the second direction is the direction of the elastic element toward the sealing plate.

[0016] In some embodiments of the present invention, the pressure regulating assembly includes a second shell and a second pressure regulating member, the second pressure regulating member is mounted on at least part of the first shell, the second shell is respectively mounted on the elastic member and the second pressure regulating member including at least part of the first shell, the Tesla channel is formed between the second pressure regulating member and the second shell, and the second cavity is formed between the elastic member and the second shell.

[0017] In some embodiments of the present invention, the second pressure regulating member is an at least partially annular structure, and the Tesla channel is provided on a surface of the at least partially annular structure. The Tesla channel includes a third pressure regulating area and a fourth pressure regulating area alternately arranged along a first direction, and the first direction is perpendicular to the direction of airflow passing through the Tesla channel.

[0018] The third pressure regulating zone is used to accelerate the airflow flowing from the second cavity to the outside world, and to decelerate the airflow flowing from the outside world to the second cavity. The fourth pressure regulating zone is used to decelerate the airflow flowing from the second cavity to the outside world, and to accelerate the airflow flowing from the outside world to the second cavity.

[0019] In some embodiments of the present invention, a second filter element is sandwiched between the second shell and the first shell, and the second filter element is disposed on a side of the second pressure regulating element facing the second cavity.

[0020] In some embodiments of the present invention, a plurality of the second filter elements are provided, and the plurality of second filter elements are spaced apart and arranged in parallel along a third direction, where the third direction is the direction of the elastic element toward the first cavity.

[0021] In some embodiments of the present invention, the elastic part includes a membrane body portion and a fixed portion, the fixed portion has a hollow structure, the membrane body portion is located in the hollow structure and is sealed with the fixed portion, the membrane body portion is used to separate the first cavity and the second cavity, and the fixed portion is sealed at the second opening end. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0023] FIG1 schematically shows a structural diagram of a bass reflex system according to a first embodiment of the present invention;

[0024] FIG2 is a schematic diagram of the exploded structure of the bass reflex system in FIG1 ;

[0025] FIG3 is a schematic cross-sectional view of the bass reflex system in FIG1 ;

[0026] FIG4 is a schematic structural diagram of a first pressure regulating member of the bass reflex system in FIG1 ;

[0027] FIG5 is a schematic diagram of an exploded structure of the bass reflex system in FIG1 with the housing assembly removed;

[0028] FIG6 schematically shows a structural diagram of a bass reflex system according to a second embodiment of the present invention;

[0029] FIG7 is a schematic diagram of a partially exploded structure of the bass reflex system in FIG6 ;

[0030] FIG8 is a schematic structural diagram of the first pressure regulating member in FIG6 ;

[0031] FIG9 schematically shows a structural diagram of a bass reflex system according to a third embodiment of the present invention;

[0032] FIG10 is a schematic diagram of the exploded structure of the bass reflex system in FIG9 ;

[0033] FIG11 is a schematic cross-sectional view of the bass reflex system in FIG9 ;

[0034] FIG12 is a schematic structural diagram of the bass reflex system in FIG9 without the second housing;

[0035] FIG13 schematically shows a structural diagram of a bass reflex system according to a fourth embodiment of the present invention;

[0036] FIG14 schematically shows a structural diagram of a bass reflex system according to a fifth embodiment of the present invention;

[0037] FIG15 is a schematic diagram of a partial exploded structure of the bass reflex system in FIG14 .

[0038] The numbers in the accompanying drawings represent as follows: 100, bass reflex system; 11, transducer; 12, first shell; 121, first cavity; 20, elastic member; 21, fixing portion; 22, membrane body portion; 30, pressure regulating assembly; 31, first pressure regulating member; 311, second cavity; 312, Tesla channel; 313, fixing bracket; 314, regulating body member; 32, sealing plate; 33, first filter member; 34, second shell; 341, bottom plate portion; 342, side plate portion; 35, second pressure regulating member; 36, second filter member; A, first pressure regulating area; B, second pressure regulating area; C, third pressure regulating area; D, fourth pressure regulating area. DETAILED DESCRIPTION

[0039] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0041] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0042] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0043] FIG1 schematically shows a schematic structural diagram of a bass reflex system according to a first embodiment of the present invention. FIG9 schematically shows a schematic structural diagram of a bass reflex system according to a third embodiment of the present invention. As shown in FIG1 and FIG9 , the present invention proposes a bass reflex system 100. The bass reflex system 100 in the present invention includes a housing assembly, an elastic member 20 and a pressure regulating assembly 30. The housing assembly includes a transducer 11 and a first shell 12 (also referred to as a box or a cabin, etc.). The first shell 12 has a first cavity 121 therein. The first cavity 121 has a first opening end and a second opening end. The transducer 11 is sealed at the first opening end, and the elastic member 20 is sealed at the second opening end. The pressure regulating assembly 30 is connected to the first shell 12 and forms a second cavity 311 between the pressure regulating assembly 30 and the elastic member 20. The pressure regulating assembly 30 has a Tesla channel 312. One end of the Tesla channel 312 is connected to the second cavity 311, and the other end of the Tesla channel 312 is connected to the outside of the bass reflex system.

[0044] By using the bass reflex system 100 in the present technical solution, a combined structure of a shell component, an elastic member 20 and a pressure regulating component 30 is adopted. The transducer 11 of the shell component can receive audio signals and generate vibrations, and drive the air in the first cavity 121 in the first shell 12. At the same time, the vibrating air will drive the elastic member 20 at the second open end of the first cavity 121. The elastic member 20 can relay the energy of the air vibration in the first cavity 121 to the second cavity 311, and then generate a new vibrating airflow in the second cavity 311, which is then transmitted to the outside of the bass reflex system by the Tesla channel 312. Since the structure of the Tesla channel 312 has the effect of unidirectional acceleration or unidirectional deceleration, in order to achieve the purpose of regulating the air pressure, the airflow will finally be discharged from the bass reflex system in the required posture and at a higher rate than the traditional rate, and coupled with the external space to output low-frequency energy, thereby improving the bass reflex capability and effect.

[0045] Specifically, in this embodiment, the transducer 11 may be a traditional speaker driving unit or a motor.

[0046] Specifically, in this embodiment, the bass reflex system 100 is formed by a "dual-cabin" structure, which is divided into a front cabin (i.e., the first cavity 121) and a rear cabin (i.e., the second cavity 311) according to the order in which the energy airflow passes through in phase. The front cabin is composed of a first shell 12 and an elastic member 20, and the rear cabin is composed of an elastic member 20 and a pressure regulating assembly 30. The elastic member 20 is a common part between the two cabins, used for airtight isolation and energy transfer between the two cabins. This characteristic is similar to the diaphragm between the thoracic and abdominal cavities in the human body. It is worth noting that the "dual-cabin" structure of this system is not the "dual-cabin" structure of a traditional bandpass structure, because the elastic member 20 is contained between the two cabins of this system and is used to separate the two cabins. The rear cabin of this system contains a Tesla channel 312. However, the elastic member 20 and the Tesla channel 312 are not found in the dual cabins of a traditional bandpass structure, and the Tesla channel 312 has never been used in the field of audio or speakers before.

[0047] Specifically, the elastic member 20 is processed through a special process and is a rubber product that has spring properties but is not prone to generating noise and can also achieve airtight isolation properties.

[0048] In a first embodiment of the present invention, as shown in Figures 2, 3, and 5, the pressure regulating assembly 30 includes a first pressure regulating member 31 and a sealing plate 32. The first pressure regulating member 31 is disposed at the second open end. An elastic member 20 is disposed between the first pressure regulating member 31 and the first housing 12. The first pressure regulating member 31 and the elastic member 20 together form a second cavity 311. The sealing plate 32 is disposed on the side of the first pressure regulating member 31 facing away from the elastic member 20, and forms a Tesla channel 312 between the sealing plate 32 and the first pressure regulating member 31. In this embodiment, the first pressure regulating member 31 is an annular structure, and the second cavity 311 is formed between the interior of the annular structure and the elastic member 20. A Tesla groove is disposed on the side of the first pressure regulating member 31 facing the sealing plate 32, and a Tesla channel 312 is formed between the Tesla groove and the sealing plate 32.

[0049] Specifically, in this embodiment, the first open end and the second open end are provided on adjacent sides of the first housing 12. The driving direction of the air in the first cavity 121 by the transducer 11 is arranged parallel to the final outflow direction of the air and perpendicular to the placement direction of the bass reflex system. Furthermore, the bass reflex system 100 in this embodiment is arranged such that the first housing 12 is located on top of the sealing plate 32, i.e., the bass reflex system 100 is a vertical structure.

[0050] In a first embodiment of the present invention, as shown in FIG4 , the Tesla channel 312 includes a first pressure regulating zone A and a second pressure regulating zone B, which are arranged adjacent to each other along a first direction. In this embodiment, the first pressure regulating zone A and the second pressure regulating zone B are located at both ends of the Tesla channel and are arranged adjacent to each other along the first direction, wherein the first pressure regulating zone A is used to accelerate the airflow flowing from the second cavity 311 to the outside world and to decelerate the airflow flowing from the outside world to the second cavity 311, and the second pressure regulating zone B is used to decelerate the airflow flowing from the second cavity 311 to the outside world and to accelerate the airflow flowing from the outside world to the second cavity 311. The first direction is the length direction or the width direction of the sealing plate 32.

[0051] Specifically, in this embodiment, the first pressure regulation zone A can also be referred to as the positive-phase Tesla zone, and the second pressure regulation zone B can also be referred to as the negative-phase Tesla zone. When airflow passes through the bass reflex system 100, it can form two phases: when airflow is discharged by the bass reflex system 100, it is called positive-phase airflow; when airflow is drawn into the bass reflex system 100, it is called negative-phase airflow. Precisely because of this, the positive-phase Tesla zone forms a positive-phase acceleration zone (or negative-phase deceleration zone), and the negative-phase Tesla zone forms a negative-phase acceleration zone (or positive-phase deceleration zone). When the positive-phase airflow passes through the positive-phase acceleration zone, it accelerates, and when it passes through the negative-phase acceleration zone, it decelerates; the reverse is true for the negative-phase airflow. In short, when airflow is discharged by the bass reflex system 100, the positive-phase acceleration zone accelerates, while the negative-phase acceleration zone decelerates. When airflow is drawn into the bass reflex system 100, the negative-phase acceleration zone accelerates, while the positive-phase acceleration zone decelerates.

[0052] In a first embodiment of the present invention, the second cavity 311 includes a vibration cavity portion and a filter layer portion that are connected. The filter layer portion is located at the end of the second cavity along the direction of airflow from the first cavity toward the outside of the bass reflex system. A sealing plate 32 is provided at the end of the Tesla channel facing away from the filter layer portion. An elastic member 20 is provided at the end of the vibration cavity portion facing away from the filter layer portion. The filter layer portion connects the vibration cavity portion and the Tesla channel 312, and a first filter element 33 is provided in the filter layer portion. In this embodiment, the vibration cavity portion can sense the vibration energy of the first cavity 121 brought by the elastic member 20, thereby driving the air in the vibration cavity portion, which is then discharged through the filter layer portion and the Tesla channel 312, thereby enhancing the bass reflex capability and effect.

[0053] Specifically, in this embodiment, as shown in Figures 3 and 5, a first filter element 33 is provided in the filter cavity for filtering out clutter and unnecessary high-frequency harmonics, so as to reshape the resolution and sound quality in the low-frequency region and improve reliability.

[0054] Specifically, the filter element is a porous sound-absorbing sheet or a sound-absorbing filter device with a Helmholtz resonator.

[0055] In the first embodiment of the present invention, a plurality of first filter elements 33 are provided, and the plurality of first filter elements 33 are spaced apart and arranged in parallel along a second direction, where the second direction is the direction from the elastic element 20 toward the sealing plate 32. In this embodiment, the provision of a plurality of first filter elements 33 can significantly filter the sound, thereby reshaping the sound quality in the low-frequency region and further improving reliability.

[0056] Specifically, as shown in Figures 6, 7, and 8, in a second embodiment of the present invention, the first pressure regulating member 31 can also be a split structure, comprising a fixing frame 313 and a regulating body 314. The fixing frame 313 defines a receiving chamber, and the elastic member 20 is sleeved and suspended on top of the fixing frame 313. The regulating body 314 is connected to the fixing frame 313 and is located at the end of the receiving chamber facing away from the elastic member 20. The regulating body 314 is provided with air holes designed according to the Tesla principle, and a Tesla channel 312 is formed on the side facing the sealing plate 32. The sealing plate 32 is disposed at the bottom of the regulating body 314 and can seal the side of the Tesla channel 312 facing away from the second chamber 311, allowing air to be ejected or inhaled through the Tesla channel 312. A first filter element 33 is also provided in the receiving chamber, connecting the second chamber 311 and the Tesla channel 312.

[0057] In the third, fourth and fifth embodiments of the present invention, as shown in Figures 9, 10, 13, 14 and 15, the pressure regulating assembly 30 includes a second shell 34 and a second pressure regulating member 35, the second pressure regulating member 35 is sleeved on the outer periphery of at least part of the first shell 12, the second shell 34 is respectively sleeved on the elastic member 20 and the outer periphery of the second pressure regulating member 35 including at least part of the first shell 12, a Tesla channel 312 is formed between the second pressure regulating member 35 and the second shell 34, and a second cavity 311 is formed between the elastic member 20 and the second shell 34.

[0058] Specifically, in the third embodiment of the present invention, the second pressure regulating member 35 is respectively sleeved on the outer periphery of the elastic member 20 and the first shell 12, and a Tesla groove is provided on the side of the second pressure regulating member 35 facing away from the first shell 12, and a Tesla channel 312 is formed between the Tesla groove and the second shell 34.

[0059] Specifically, in this embodiment, the first opening end and the second opening end are arranged opposite to each other, and the driving direction of the air in the first cavity 121 by the transducer 11 is arranged in reverse parallel to the direction in which the air finally flows out.

[0060] Specifically, as shown in Figure 11, the second housing 34 includes a connected side panel 342 and a bottom panel 341. The side panel 342 is respectively mounted outside the second pressure regulating member 35 and the elastic member 20, and forms a Tesla channel 312 between the side panel 342 and the Tesla groove. In addition, the bottom panel 341 is spaced apart from the first housing 12, and a second cavity 311 is formed between the bottom panel 341 and the elastic member 20. One end of the second cavity 311 is connected to one end of the Tesla channel 312, and the other end of the Tesla channel 312 is connected to the outside of the entire bass reflex system.

[0061] Specifically, in this embodiment, the interior of the second housing 34 is used to accommodate the first housing 12 , the elastic member 20 and the second pressure regulating member 35 .

[0062] In a third embodiment of the present invention, as shown in FIG12 , the second pressure regulating member 35 is an annular structure, and a Tesla channel 312 is provided on the surface of the annular structure. The Tesla channel 312 includes a third pressure regulating area C and a fourth pressure regulating area D alternately arranged along the axial direction of the annular structure. The structures of the third pressure regulating area C and the fourth pressure regulating area D are different, but both adopt a Tesla structure arrangement.

[0063] Among them, the third pressure adjustment zone C is used to accelerate the airflow flowing from the second cavity 311 to the outside world, and to decelerate the airflow flowing from the outside world to the second cavity 311, and the fourth pressure adjustment zone D is used to decelerate the airflow flowing from the second cavity 311 to the outside world, and to accelerate the airflow flowing from the outside world to the second cavity 311.

[0064] Furthermore, in this embodiment, the third pressure regulation zone C can be called a positive phase Tesla zone, and the fourth pressure regulation zone D can be called a negative phase Tesla zone. In this embodiment, there are four third pressure regulation zones C and four fourth pressure regulation zones D, and the second pressure regulation member 35 is a square ring structure. The four third pressure regulation zones C are respectively arranged in the four positive directions of the square ring structure, namely, the outer side surface just above, the outer side surface just below, the outer side surface just to the left, and the outer side surface just to the right of the outer periphery of the first shell 12. The four fourth pressure regulation zones D are respectively arranged on the outer arc surface at the four corners of the outer periphery of the first shell 12. The four third pressure regulation zones C and the four fourth pressure regulation zones D are alternately arranged to achieve the purpose of regulating the pressure of the air. The airflow will finally be discharged from the entire bass reflex system in the required posture and at a higher rate than the traditional one, and coupled with the external space to output low-frequency energy, thereby improving the bass reflex ability and effect.

[0065] In a third embodiment of the present invention, as shown in Figure 11 , a second filter element 36 is interposed between the second housing 34 and the first housing 12. The second filter element 36 is disposed on the side of the second pressure regulating element 35 facing the second cavity 311. In this embodiment, the second filter element 36 filters the sound, removing clutter and unwanted high-frequency harmonics, thereby restoring the resolution and sound quality of the low-frequency region and improving reliability.

[0066] In a third embodiment of the present invention, a plurality of second filter elements 36 are provided, and the plurality of second filter elements 36 are spaced apart and arranged in parallel along a third direction, where the third direction is the direction from the elastic element 20 toward the first cavity 121. In this embodiment, the provision of a plurality of second filter elements 36 can significantly filter the sound, thereby reshaping the sound quality in the low-frequency region and further improving reliability.

[0067] Specifically, in this embodiment, the second filter element 36 is an annular structure and is sleeved outside the first housing 12 .

[0068] In the fourth and fifth embodiments of the present invention, as shown in Figure 13, the second pressure regulating member 35 is sleeved on a portion of the outer periphery of the first shell 12, and the second shell 34 is respectively sleeved on the elastic member 20 and a portion of the outer periphery of the second pressure regulating member 35. A Tesla channel 312 is formed between the second pressure regulating member 35 and the second shell 34, and a second cavity 311 is formed between the elastic member 20 and the second shell 34.

[0069] Specifically, in the fourth embodiment, the length of the first shell 12 is greater than the length of the second shell 34 and the second pressure regulating member 35, that is, the second shell 34 and the second pressure regulating member 35 are wrapped or sleeved around at least a portion of the outer periphery of the first shell 12, and the direction of the first opening end and the transducer 11 is changed so that the first opening end and the second opening end are arranged on two adjacent sides of the first shell 12, and the driving direction of the transducer 11 on the air in the first cavity 121 is at a 90° angle to the final outflow direction of the air. In addition, the arrangement of the bass reflex system 100 in this embodiment is that the first cavity 121 and the first shell 12 are located at the top of the second cavity 311 formed by the bottom plate portion 341 and the elastic member 20, that is, the bass reflex system 100 is a vertical structure.

[0070] Specifically, in the fifth embodiment, the first housing 12 is a generally polygonal prismatic columnar structure and is mounted with multiple transducers 11. There are also multiple first open ends corresponding to the transducers 11. The second housing 34 and the second pressure regulating member 35 are horizontally semi-annular, i.e., horizontally semi-enclosed, structures that wrap around or sleeve at least a portion of the outer circumference of the first housing 12. The height of the first housing 12 is greater than that of the second housing 34 and the second pressure regulating member 35.

[0071] In some embodiments of the present invention, as shown in Figures 3 and 11, the elastic member 20 includes a membrane portion 22 and a fixed portion 21. The fixed portion 21 has a hollow structure. The membrane portion 22 is located in the hollow structure and is sealed to the fixed portion 21. The membrane portion 22 is used to separate the first cavity 121 from the second cavity 311. The fixed portion 21 is sealed at the first open end. In this embodiment, the fixed portion 21 is used to connect to the second open end of the first shell 12. The membrane portion 22 is located in the hollow structure and can receive vibration energy from the air in the first cavity 121 and transmit it to the air in the second cavity 311, thereby facilitating the transmission of sound energy.

[0072] Specifically, in this embodiment, the membrane body 22 is a curved structure and has elasticity, which can promote the membrane body 22 to reset when the membrane body 22 vibrates and always maintain reciprocating motion during operation, thereby improving reliability.

[0073] Furthermore, by using the bass reflex system 100 in the present technical solution, a first cavity 121 (front compartment) similar to a cylinder composed of a first shell 12 and an elastic member 20 is adopted. When the transducer 11 is in operation, it can receive audio signals and vibrate. When vibrating, it drives the air inside the first cavity 121 to form airflow and air pressure. The vibrating airflow and air pressure further drive the elastic member 20 that responds to the transducer 11. At the same time, the driven elastic member 20 exchanges the vibration energy between the first cavity 121 and the second cavity 311. At this time, the first cavity 121 can be compared to the "cylinder" of the engine, that is, the first shell 12 is compared to the cylinder body, the transducer 11 is compared to the primary piston, that is, the instigating piston or the driving piston, the elastic member 20 is compared to the secondary piston or the stress piston, and the internal air is compared to the energy fluid. In addition, this first cavity 121 can also be compared to an "AC transformer", that is, the transducer 11 is compared to the primary coil, the internal air, that is, the energy fluid, is compared to the primary current and voltage, the first shell 12 and the fixed part 21 are compared to the magnetic flux, the membrane part 22 is compared to the secondary coil, and the air pushed by the elastic part 20, that is, the energy fluid, can be compared to the secondary current and voltage.

[0074] Specifically, in the present invention, by using the pressure regulating component 30, on the one hand, during its operation, the energy generated by the positive phase airflow (i.e., the exhaled airflow) from the first cavity 121 is converted to the second cavity 311 through the elastic member 20, and the high-pressure saturated airflow accumulated in the second cavity 311 is forced to enter the filter element for filtration. The filtered airflow then enters the positive phase Tesla area for positive phase pressurization and acceleration processing, and finally outputs low-frequency energy. On the other hand, during its operation, the reverse phase airflow (i.e., the inhaled airflow) from outside the system can be inhaled into the reverse phase Tesla area for reverse phase pressurization and acceleration processing, and the treated airflow is filtered in the filter element, and then the filtered airflow is sent to the energy transition zone. At this time, the energy transition zone is just in a low pressure state. After the inhaled airflow, the energy generated is transferred to the first cavity 121, which is also in a low pressure state, through the elastic member 20 to relieve the air pressure in the cabin. In summary, the use of the first housing 12 housing the transducer 11 and the elastic member 20, which form a cylinder-like first cavity 121 and a second cavity 311, creates a so-called "dual-chamber" bass reflex system 100, or a cabinet structure. This system can achieve vortex supercharging and jet supercharging effects through the Tesla channel 312, while also utilizing filtering elements to achieve a "filter" effect to reshape the sound quality in the low-frequency range. This "dual-chamber" structure is not only a dynamic system within the realm of fluid mechanics; it is also an alternating airflow and pressure-transformation system. When analogized to a dynamic system within the realm of fluid mechanics, this system is like a cylinder; when analogized to an alternating airflow and pressure-transformation system, this system is equivalent to an "AC transformer" for electric current. Within the physics of fluid mechanics and AC transformers, the system formed by the dual-chamber cabinet of the present invention implements analogous and relatable scientific and technological concepts such as "cylinder," "piston," "fluid," "energy exchange," "turbojet," "filter," "accelerator," "primary coil," "current, voltage," "magnetic flux," and "secondary coil."

[0075] In addition, when the system is working, the transducer 11, which is analogous to the primary piston and primary coil, emits the original driving force, namely the "primary airflow and air pressure", and applies elastic kinetic energy to the inside of the first shell 12, which is analogous to the cylinder and magnetic flux, and continues to push the elastic part 20, which is analogous to the secondary piston and secondary coil, to produce stress vibration, thereby generating "secondary air pressure and airflow" which is analogous to the secondary current and voltage to complete the voltage transformation of the "alternating airflow transformer". The airflow after voltage transformation then enters the pressure regulating assembly 30 for post-processing such as filtration and pressurization acceleration. Finally, the airflow is discharged from the outside of the entire system in the required posture and at a higher rate than the traditional one, and couples with the external space to output low-frequency energy.

[0076] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bass reflex system, characterized in that, Comprising: A housing assembly, the housing assembly including a transducer and a first housing, a first cavity being provided in the first housing, the first cavity having a first open end and a second open end, the transducer being sealed and provided at the first open end; An elastic member, the elastic member being sealed and provided at the second open end; A pressure regulating assembly, the pressure regulating assembly being connected to the first housing and forming a second cavity with the elastic member, the pressure regulating assembly having a Tesla channel, one end of the Tesla channel being in communication with the second cavity, and the other end of the Tesla channel being in communication with the outside of the bass reflex system.

2. The bass reflex system according to claim 1, characterized in that, The pressure regulating assembly includes a first pressure regulating member and a sealing plate, the first pressure regulating member being provided at the second open end, an elastic member being provided between the first pressure regulating member and the first housing, a second cavity being formed by enclosing between the first pressure regulating member and the elastic member, the sealing plate being provided on a side of the first pressure regulating member facing away from the elastic member, and a Tesla channel being formed between the sealing plate and the first pressure regulating member.

3. The bass reflex system according to claim 2, characterized in that, The Tesla channel includes a first pressure regulating region and a second pressure regulating region, the first pressure regulating region and the second pressure regulating region being arranged adjacent to each other along a first direction; The first pressure regulating region is configured to accelerate the airflow flowing from the second cavity to the outside and decelerate the airflow flowing from the outside to the second cavity, and the second pressure regulating region is configured to decelerate the airflow flowing from the second cavity to the outside and accelerate the airflow flowing from the outside to the second cavity, the first direction being the length direction or the width direction of the sealing plate.

4. The bass reflex system according to claim 2, wherein, The second cavity includes a vibration cavity portion and a filter layer portion that are in communication with each other. Along the direction of airflow flowing from the first cavity towards the outside of the bass reflex system, the filter layer portion is located at the end of the second cavity. The sealing plate is provided at one end of the Tesla channel facing away from the filter layer portion, the elastic member is provided at one end of the vibration cavity portion facing away from the filter layer portion, the filter layer portion communicates the vibration cavity portion and the Tesla channel, and a first filtering member is provided in the filter layer portion.

5. The bass reflex system according to claim 4, characterized in that, A plurality of the first filtering members are provided, and the plurality of first filtering members are arranged at intervals and parallel to each other along a second direction, the second direction being the direction from the elastic member towards the sealing plate.

6. The bass reflex system according to claim 1, characterized in that, The pressure regulating assembly includes a second housing and a second pressure regulating member, the second pressure regulating member being sleeved outside at least a part of the first housing, the second housing being sleeved outside the elastic member and the second pressure regulating member including at least a part of the first housing, a Tesla channel being formed between the second pressure regulating member and the second housing, and a second cavity being formed between the elastic member and the second housing.

7. The bass reflex system according to claim 6, characterized in that, The second pressure regulating member is at least a part of an annular structure, the surface of the at least a part of the annular structure being provided with the Tesla channel, the Tesla channel including a third pressure regulating region and a fourth pressure regulating region that are alternately arranged along a first direction, the first direction being perpendicular to the direction of airflow passing through the Tesla channel; The third pressure regulation area is used to accelerate the air flow flowing from the second cavity to the outside and decelerate the air flow flowing from the outside to the second cavity, and the fourth pressure regulation area is used to decelerate the air flow flowing from the second cavity to the outside and accelerate the air flow flowing from the outside to the second cavity.

8. The bass reflex system according to claim 6, characterized in that, A second filter element is clamped between the second housing and the first housing, and the second filter element is arranged on the side of the second pressure regulating member facing the second cavity.

9. The bass reflex system according to claim 8, characterized in that, There are multiple second filter elements, and the multiple second filter elements are arranged at intervals and in parallel in the third direction, and the third direction is the direction in which the elastic member faces the first cavity.

10. The bass reflex system according to claim 1, characterized in that, The elastic member includes a membrane body portion and a fixing portion. The fixing portion has a hollow structure inside. The membrane body portion is located in the hollow structure and is hermetically connected to the fixing portion. The membrane body portion is used to separate the first cavity and the second cavity, and the fixing portion is hermetically arranged at the second opening end.

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