Loudspeaker and electronic product

Abstract

The invention belongs to the technical field of electronic products, and discloses a loudspeaker and an electronic product. The loudspeaker comprises a loudspeaker single body and a shell, the loudspeaker single body comprises a magnetic part assembly, a vibration assembly and a magnet yoke, and the magnetic part assembly is arranged on the magnet yoke; an accommodating cavity and a mounting port communicated with the accommodating cavity are arranged in the shell, the shell is provided with a sound outlet, the loudspeaker monomer is arranged in the accommodating cavity, the accommodating cavity is divided into a front cavity and a rear cavity by the vibration assembly, the sound outlet is communicated with the front cavity, the magnetic part assembly is arranged in the rear cavity, and the sound outlet is communicated with the rear cavity. The magnet yoke is arranged on the shell and seals the mounting opening. According to the loudspeaker, it can be guaranteed that an operator observes the matching condition of the loudspeaker single body and the shell in the assembling process, the assembling effect is guaranteed, the stability of the loudspeaker single body is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of electronic product technology, and more particularly to a loudspeaker and electronic product. Background Technology

[0002] In recent years, with the rapid development of mobile communication technology, consumers are increasingly using mobile communication devices with voice capabilities, such as mobile phones, tablets, and laptops. The speaker, as the voice playback device, directly affects the voice performance of mobile communication devices.

[0003] In existing technology, the speaker housing must consist of at least two parts: an upper shell and a lower shell. After the speaker driver is installed into the lower shell, the upper shell is then fastened and secured to the lower shell. However, when the upper and lower shells are fastened together, it is difficult for the operator to observe the fit between the speaker driver and the upper shell. If there is a gap between the speaker driver and the upper shell, it is difficult to ensure the seal between the front and rear cavities. Furthermore, after prolonged use, the speaker driver is prone to shaking, leading to quality problems. Summary of the Invention

[0004] The purpose of this invention is to provide a loudspeaker and electronic product that allows operators to observe the fit between the loudspeaker unit and the housing during assembly, ensuring assembly effectiveness, improving the stability of the loudspeaker unit, and guaranteeing product quality.

[0005] To achieve this objective, the present invention adopts the following technical solution: A loudspeaker, comprising: A loudspeaker unit includes a magnetic component assembly, a resonating component, and a magnetic yoke, wherein the magnetic component assembly is disposed on the magnetic yoke; The housing has a receiving cavity and a mounting port communicating with the receiving cavity. The housing also has a sound outlet. The speaker unit is disposed in the receiving cavity. The vibration assembly divides the receiving cavity into a front cavity and a rear cavity. The sound outlet is connected to the front cavity. The magnetic assembly is disposed in the rear cavity. The magnetic yoke is disposed on the housing and seals the mounting port.

[0006] Preferably, the inner wall of the housing is provided with an annular vertical wall facing the speaker unit, and a support is provided at the bottom end of the vertical wall. The vibration assembly includes a diaphragm and a voice coil disposed on the diaphragm, and the side of the diaphragm is connected to the support.

[0007] Preferably, the outer shell is integrally formed with the vertical wall.

[0008] Preferably, the magnetic component assembly includes a magnet assembly and a magnetic guide plate. The magnet assembly is disposed on the magnetic yoke, the magnetic guide plate is disposed on the magnet assembly, the edge of the magnetic guide plate is connected to the support portion, and the diaphragm is sandwiched between the magnetic guide plate and the support portion.

[0009] Preferably, a resonant cavity is provided in the front cavity, the resonant cavity extends circumferentially along the front cavity and is in communication with the front cavity.

[0010] Preferably, the front cavity is provided with a tube wall, one side of which is connected to a vertical wall, and the other side of which extends away from the diaphragm and abuts against and seals against the inner wall of the outer shell. The outer shell, the vertical wall and the tube wall form the resonant cavity.

[0011] Preferably, there are multiple resonant cavities, with one end of each resonant cavity connected to the front cavity and the other end blocked.

[0012] Preferably, at least two of the plurality of resonant cavities have different lengths.

[0013] Preferably, the front cavity is provided with a first cavity and a second cavity, and one end of the first cavity is provided with a first opening to form a first resonant cavity, one end of the second cavity is provided with a second opening, and a baffle is provided in the second cavity, and a second resonant cavity is formed between the second opening of the second cavity and the baffle.

[0014] Preferably, the front cavity is provided with a first resonant cavity, a second resonant cavity and a third resonant cavity, the first opening of the first resonant cavity is disposed opposite to the second opening of the second resonant cavity, and the third opening of the third resonant cavity is disposed at the end of the second resonant cavity away from the second opening.

[0015] Preferably, the cavity is provided with a partition plate, one side of which is connected to the vertical wall, and the other sides of which are connected to the outer shell. A sound outlet is formed between the outer shell and the partition plate, and the sound outlet is located at the end of the sound outlet. The portion of the vertical wall opposite to the sound outlet is provided with a through hole.

[0016] Preferably, the outer shell is provided with an annular baffle wall, which divides the space inside the outer shell into the receiving cavity and the powder cavity. The receiving cavity is located on the inner side of the baffle wall, and the powder cavity is located on the outer side of the baffle wall. The baffle wall has multiple connecting holes, and the receiving cavity and the powder cavity are connected through the multiple connecting holes.

[0017] Preferably, the retaining wall is connected to the vertical wall, and the retaining wall and the vertical wall are integrally formed.

[0018] Preferably, the housing further includes a sealing cap, and the side wall of the housing has a filling hole, the sealing cap being able to be fastened to the filling hole to seal the filling hole.

[0019] An electronic product including the aforementioned speaker.

[0020] The beneficial effects of this invention are: This invention provides a loudspeaker and an electronic product. The loudspeaker comprises only two parts: a housing and a speaker unit. During assembly, the speaker unit is inserted into the housing's cavity through a mounting port, and the vibrating assembly is sealed to the housing to divide the cavity into a front and rear chamber. Simultaneously, the magnetic yoke is positioned on the housing and the mounting port is sealed. The speaker unit generates sound by vibrating the air in the front chamber through a diaphragm, and the sound is played through the sound outlet. The rear chamber has a larger volume, ensuring the loudspeaker's low-frequency performance and preventing insufficient low-frequency sensitivity, resulting in a smoother sound profile and improved sound quality.

[0021] This speaker allows operators to observe the fit between the speaker unit and the housing during assembly, ensuring assembly quality and improving the stability of the speaker unit, thus guaranteeing product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the loudspeaker provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a loudspeaker unit provided in an embodiment of the present invention; Figure 3 This is an exploded view of a speaker unit provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the outer shell provided in an embodiment of the present invention; Figure 5 This is a first cross-sectional view of the loudspeaker provided in an embodiment of the present invention; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 yes Figure 5 A magnified view of a section at point B in the middle; Figure 8 This is a second cross-sectional view of the loudspeaker provided in an embodiment of the present invention; Figure 9 This is a cross-sectional view of the outer casing provided in an embodiment of the present invention.

[0023] In the picture: 1. Loudspeaker driver; 11. Magnet assembly; 111. Magnet assembly; 112. Magnetic guide plate; 12. Vibrating assembly; 121. Diaphragm; 122. Voice coil; 13. Magnetic yoke; 2. Outer shell; 21. Receiving cavity; 211. Front cavity; 212. Rear cavity; 213. Powder cavity; 214. Filling hole; 215. Partition plate; 216. Sound outlet channel; 22. Sound outlet; 23. First resonant cavity; 231. First opening; 24. Second resonant cavity; 241. Second opening; 25. Third resonant cavity; 251. Third opening; 261. Vertical wall; 2611. Through hole; 262. Baffle wall; 2621. Connecting hole; 27. Sealing cap; 28. Support part; 281. Pipe wall; 29. ​​Baffle plate; 30. Resonant cavity. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 invention according to the specific circumstances.

[0026] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] This invention provides an electronic product comprising a housing and a speaker disposed within the housing, which, when in use, can play sound through the speaker. In this embodiment, the electronic product may be one of a mobile phone, a tablet computer, or a laptop computer. As a voice playback device, the design quality of the speaker directly affects the voice performance of the mobile communication device.

[0029] In existing technology, the speaker housing must consist of at least two parts: an upper shell and a lower shell. After the speaker driver is installed into the lower shell, the upper shell is then fastened and secured to the lower shell. However, when the upper and lower shells are fastened together, it is difficult for the operator to observe the fit between the speaker driver and the upper shell. If there is a gap between the speaker driver and the upper shell, it is difficult to ensure the seal between the front and rear cavities. Furthermore, after prolonged use, the speaker driver is prone to shaking, leading to quality problems.

[0030] like Figures 1-5 As shown, to solve the above problems, the loudspeaker provided in this embodiment includes a loudspeaker unit 1 and a housing 2. The loudspeaker unit 1 includes a magnetic component 11, a vibration component 12 and a magnetic yoke 13. The magnetic component 11 is disposed on the magnetic yoke 13. The housing 2 is provided with a receiving cavity 21 and a mounting port communicating with the receiving cavity 21. The housing 2 is provided with a sound outlet 22. The loudspeaker unit 1 is disposed in the receiving cavity 21. The vibration component 12 divides the receiving cavity 21 into a front cavity 211 and a rear cavity 212. The sound outlet 22 is connected to the front cavity 211. The magnetic component 11 is disposed in the rear cavity 212. The magnetic yoke 13 is disposed on the housing 2 and seals the mounting port.

[0031] The loudspeaker consists of only two parts: a housing 2 and a speaker unit 1. During assembly, the speaker unit 1 is simply inserted into the receiving cavity 21 of the housing 2 through the mounting port, and the vibrating assembly 12 is sealed to the housing 2 to divide the receiving cavity 21 into a front cavity 211 and a rear cavity 212. Simultaneously, the magnetic yoke 13 is positioned on the housing 2 and the mounting port is sealed. The speaker unit 1 generates sound by vibrating the air in the front cavity 211 through the diaphragm 121, and the sound is played through the sound outlet 22. The rear cavity 212 has a larger volume, ensuring the speaker's low-frequency performance and preventing insufficient low-frequency sensitivity, resulting in a smoother sound curve and improved sound quality.

[0032] The magnetic yoke 13 is an important metal component of the loudspeaker driver 1. Its function is to converge and guide the magnetic lines of force generated by the permanent magnet, forming a uniform and dense magnetic field gap, providing a stable power foundation for the vibration of the voice coil 122. The magnetic yoke 13 is usually located at the bottom or back of the loudspeaker magnetic assembly 11. Therefore, using the magnetic yoke 13 to seal the mounting opening not only allows the operator to observe the fit between the loudspeaker driver 1 and the housing 2 during loudspeaker assembly, ensuring the assembly effect, but also ensures the sealing and strength of the mounting opening, and also ensures the stability of the loudspeaker relative to the housing 2.

[0033] In some embodiments, the inner wall of the housing 2 is provided with an annular vertical wall 261 in the direction of the speaker unit 1, and a support portion 28 is provided at the bottom end of the vertical wall 261. The vibration assembly 12 includes a diaphragm 121 and a voice coil 122 disposed on the diaphragm 121, and the side of the diaphragm 121 is connected to the support portion 28.

[0034] like Figures 4-9 As shown, in some embodiments, the inner wall of the housing 2 is provided with an annular vertical wall 261 facing the speaker unit 1, and a support portion 28 is provided at the bottom end of the vertical wall 261. The vibration assembly 12 includes a diaphragm 121 and a voice coil 122 disposed on the diaphragm 121. The side of the diaphragm 121 is connected to the support portion 28, and the voice coil 122 is used to support the diaphragm 121 and ensure the shape of the diaphragm 121.

[0035] In other words, the support 28, the diaphragm 121, and the inner wall of the housing 2 located inside the support 28 together form the front cavity 211. The vertical wall 261 can position the speaker driver 1 during installation. During assembly, when the operator inserts the speaker driver 1 into the housing 2, the vertical wall 261 can ensure the accuracy of the speaker driver 1's installation position, while the support 28 can provide a reference for the installation depth of the speaker driver 1, greatly simplifying the difficulty for the operator in installing the speaker driver 1. To ensure the sealing of the front cavity 211, it is only necessary to apply sealant to the outer periphery of the diaphragm 121 before assembly, and then make the sealant contact the support 28 when the speaker is inserted into the receiving cavity 21.

[0036] like Figure 3 As shown, in some embodiments, the magnetic component 11 includes a magnet assembly 111 and a magnetic guide plate 112. The magnet assembly 111 is disposed on the magnetic yoke 13, and the magnetic guide plate 112 is disposed on the magnet assembly 111. The edge of the magnetic guide plate 112 is connected to the support portion 28, and the diaphragm 121 is sandwiched between the magnetic guide plate 112 and the support portion 28. The magnetic guide plate 112 can guide and concentrate the magnetic field lines, improve the magnetic efficiency of the magnet assembly 111, and also prevent magnetic field leakage from affecting other electrical components.

[0037] In some embodiments, the magnet assembly 111 includes a main magnet and a secondary magnet, the secondary magnet is arranged around the main magnet, a magnetic gap is formed between the main magnet and the secondary magnet, the voice coil 122 moves in the magnetic gap after being energized, and the magnetic plate 112 is disposed on the secondary magnet.

[0038] In some embodiments, the outer shell 2 and the vertical wall 261 are integrally formed, which simplifies the assembly process, reduces the cumulative tolerance, improves the performance stability of the product, and reduces the assembly structure and glue path, thereby improving the space utilization rate.

[0039] like Figure 4 and Figure 9As shown, to solve the above problems, a resonant cavity 30 is provided in the front cavity 211. The resonant cavity 30 extends circumferentially along the front cavity 211 and is connected to the front cavity 211. The vibration component 12 of the speaker unit 1 divides the receiving cavity 21 in the housing 2 into the front cavity 211 and the rear cavity 212, and the resonant cavity 30 is provided in the front cavity 211. When the sound wave enters the resonant cavity 30, the resonant cavity 30 will resonate with the sound wave of a specific frequency according to the different lengths of the resonant cavity 30. By adjusting the length of the resonant cavity 30, the cavity peak or the channel peak can be suppressed. Since the resonant cavity 30 is located in the front cavity 211 of the speaker, it does not occupy the volume of the rear cavity 212, ensuring the low-frequency performance of the speaker, avoiding the problem of insufficient low-frequency sensitivity of the speaker, making the sound curve smoother, improving the sound quality, and meeting the requirements of product lightweighting and miniaturization.

[0040] In some embodiments, the resonant cavity 30 is a Fabry-Perot cavity, which consists of two parallel acoustic reflecting surfaces filled with air or other media. When a sound wave enters the cavity, it reflects back and forth between the two reflecting surfaces, generating multiple reflected and transmitted waves. When the path difference of the sound wave during one round trip within the cavity satisfies the constructive interference condition, a standing wave resonance will form within the cavity at a specific frequency. At this point, the transmitted sound intensity at that frequency reaches its maximum value, improving sound quality. Frequencies that do not meet the condition are suppressed due to destructive interference, resulting in a smoother sound profile.

[0041] The resonant frequency of the Fabry-Perot cavity is fn = c / 4L, where n = 1 is the fundamental frequency, c is the speed of sound, and L is the effective length of the duct. In other words, under certain external environmental conditions, the resonant frequency of the Fabry-Perot cavity is related to L. Designers can design the length of the Fabry-Perot cavity as needed to filter out sound waves of the target frequency and suppress noise of other frequencies.

[0042] In some embodiments, such as Figure 6 and Figure 9 As shown, a tube wall 281 is provided in the front cavity 211. One side of the tube wall 281 is connected to the vertical wall 261, and the other side of the tube wall 281 extends away from the diaphragm 121 and abuts and seals against the inner wall of the outer shell 2. The outer shell 2, the vertical wall 261, and the tube wall 281 enclose a resonant cavity 30. The formation of the resonant cavity 30 utilizes the existing vertical wall 261 and inner wall of the outer shell 2, requiring only the tube wall 281, which greatly simplifies the structure and reduces the volume occupied by the resonant cavity 30 in the front cavity 211. Moreover, since the vertical wall 261 is annular, the inner wall of the outer shell 2 can cover the area of ​​the vertical wall 261. Therefore, the length of the resonant cavity 30 is determined by the circumferential extension length of the tube wall 281 within the front cavity 211.

[0043] In some embodiments, multiple resonant cavities 30 are provided, with one end of each resonant cavity 30 connected to the front cavity 211 and the other end blocked. That is, each resonant cavity 30 can resonate with sound waves of a specific frequency. The combined effect of multiple resonant cavities 30 can selectively enhance sound waves of multiple frequencies, as well as selectively enhance sound waves of the same frequency, thereby improving sound quality.

[0044] In some embodiments, at least two of the plurality of resonant cavities 30 have different lengths. This structure enables the loudspeaker to amplify sound waves at least two frequencies, widening the effective frequency response range. The shorter cavity corresponds to high-frequency resonance, which can enhance the radiation efficiency of high frequencies and prevent the high-frequency signal from attenuating too quickly; the longer cavity corresponds to mid-low frequency resonance, which can compensate for the loudspeaker's response shortcomings in the mid-low frequency region and improve the fullness of bass. After combining multiple cavity lengths, the entire operating frequency range of the loudspeaker can be covered, making the sound pressure output of high, mid, and low frequencies more uniform and achieving balanced sound across the entire frequency range.

[0045] In some embodiments, such as Figure 4 and Figure 9 As shown, the front cavity 211 is mirror-imagely provided with a first cavity and a second cavity, and a first opening 231 is provided at one end of the first cavity to form a first resonant cavity 23, and a second opening 241 is provided at one end of the second cavity, and a baffle 29 is provided in the second cavity. A second resonant cavity 24 is formed between the second opening 241 of the second cavity and the baffle 29.

[0046] The front cavity 211 has a mirror image of the first cavity and the second cavity, making the layout of the front cavity 211 mirror symmetrical. This facilitates design and molding, and also ensures a more uniform acoustic impedance distribution in the outer shell 2, reducing sound wave reflection loss at the interface and improving sound quality. The baffle 29 in the second cavity can be designed in a specific position as needed, thereby adjusting the length of the second resonant cavity 24.

[0047] In some embodiments, the front cavity 211 is provided with a first resonant cavity 23, a second resonant cavity 24 and a third resonant cavity 25. The first opening 231 of the first resonant cavity 23 is disposed opposite to the second opening 241 of the second resonant cavity 24. The third opening 251 of the third resonant cavity 25 is disposed at the end of the second resonant cavity 24 away from the second opening 241, which further widens the effective frequency response range of the speaker, enabling the speaker to enhance sound waves of three frequencies and further improve the sound quality.

[0048] In some embodiments, such as Figure 7As shown, a partition plate 215 is provided inside the receiving cavity 21. One side of the partition plate 215 is connected to the vertical wall 261, and the other sides of the partition plate 215 are connected to the outer shell 2. A sound outlet channel 216 is formed between the outer shell 2 and the partition plate 215. A sound outlet 22 is located at the end of the sound outlet channel 216. A through hole 2611 is provided on the portion of the vertical wall 261 opposite to the sound outlet 22. The sound outlet channel 216 is connected to the front cavity 211 through the through hole 2611. The partition plate 215 separates the space inside the outer shell 2, which not only divides the front cavity 211 and the rear cavity 212, but also expands the space of the front cavity 211 and the rear cavity 212, optimizes the sound effect, and improves the sound quality.

[0049] In some embodiments, an annular baffle 262 is provided inside the housing 2, dividing the space inside the housing 2 into a receiving cavity 21 and a powder cavity 213. The receiving cavity 21 is located inside the baffle 262, and the powder cavity 213 is located outside the baffle 262. The baffle 262 has multiple connecting holes 2621, through which the receiving cavity 21 and the powder cavity 213 are connected. The baffle 262 inside the housing 2 forms the powder cavity 213, which surrounds the rear cavity 212. The powder cavity 213 is filled with acoustic powder or fiber material, which is equivalent to increasing the volume of the cavity, enabling the speaker to generate low-frequency sound waves more effectively. At the same time, the filling material in the powder cavity 213 absorbs air and slows down the sudden change in air pressure inside the cavity, allowing the diaphragm 121 to vibrate more smoothly, thereby improving the bass effect with a small volume.

[0050] In some embodiments, the outer shell 2 and the vertical wall 261 are integrally formed, which simplifies the assembly process, reduces the cumulative tolerance, improves the performance stability of the product, and reduces the assembly structure and glue path, thereby improving the space utilization rate.

[0051] Similarly, the retaining wall 262 is connected to the vertical wall 261, and the retaining wall 262 and the vertical wall 261 are integrally formed. This structure eliminates the need for a powder screen, optimizes the process flow, and reduces costs. At the same time, the connection between the retaining wall 262 and the vertical wall 261 is equivalent to the retaining wall 262 and the vertical wall 261 being integrally formed during molding, which simplifies the process and improves the overall strength of the outer shell 2, preventing deformation of the outer shell 2.

[0052] In some embodiments, the outer shell 2 is made using 3D printing technology. 3D printing technology, also known as additive manufacturing, is a technology that creates three-dimensional objects by stacking 3D printing materials layer by layer. Because 3D printing technology builds objects by layering materials, it can create complex geometric shapes that are difficult to achieve with traditional processes, improving manufacturing efficiency and reducing design difficulty.

[0053] In some embodiments, the housing 2 is made of one of aluminum alloy, stainless steel, copper alloy, and plastic. Depending on the application of the speaker, different materials can be selected for the manufacture of the housing 2 as needed. For example, aluminum alloy can be selected to ensure the strength and lightness of the housing 2; stainless steel can be selected to ensure the strength of the housing 2 and reduce costs; copper alloy can be selected to ensure the housing 2 has excellent heat dissipation; and plastic can be selected to ensure the lightness of the housing 2 and reduce costs.

[0054] In some embodiments, the wall thickness of the outer casing 2 is 0.1mm to 0.3mm. It is worth noting that the wall thickness of the outer casing 2 should not be too thick or too thin. Excessive thickness increases weight and material usage, raising costs; excessive thinness results in poor strength of the outer casing 2, making it prone to deformation and damage, and also leading to unstable sound quality and affecting user experience. Specifically, the wall thickness of the outer casing 2 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3.0mm.

[0055] like Figure 1 and Figure 4 As shown, the outer shell 2 also includes a sealing cap 27. A filling hole 214 is provided on the side wall of the outer shell 2. The sealing cap 27 can be fastened to the filling hole 214 to seal it. Since the outer shell 2 is integrally molded, the cavity inside the outer shell 2 cannot be filled with material by opening it, unlike the structure where the upper and lower shells are fastened together. Therefore, the filling hole 214 needs to be left out during modeling so that acoustic powder or fiber material can be filled into the powder cavity 213 after molding. After filling, the sealing cap 27 is used to seal the filling hole 214 to prevent leakage of the filling material.

[0056] It is worth noting that when the diaphragm 121 vibrates, it generates sound waves in the rear cavity 212. If these sound waves are reflected or superimposed in the rear cavity 212, they will form standing waves or unnecessary resonances, interfering with the vibration of the diaphragm 121 itself. However, by providing a connecting hole 2621 in the baffle 262, the sound waves can enter the powder cavity 213, and the sound-absorbing material can absorb and dissipate this sound energy, making the rear cavity 212 approach the ideal state of "acoustic infinity", that is, the sound waves on the back of the diaphragm 121 are completely absorbed without reflection.

[0057] In this embodiment, the diameter of the connecting hole 2621 is 0.05mm to 0.2mm. The diameter of the connecting hole 2621 should not be too large or too small. If it is too large, it will cause filling materials such as acoustic powder or fiber materials to enter the rear cavity 212; if it is too small, it will affect the transmission of sound waves. Specifically, the diameter of the connecting hole 2621 can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, or 0.2mm.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A loudspeaker, characterized in that, include: A loudspeaker unit includes a magnetic component assembly, a resonating component, and a magnetic yoke, wherein the magnetic component assembly is disposed on the magnetic yoke; The housing has a receiving cavity and a mounting port communicating with the receiving cavity. The housing also has a sound outlet. The speaker unit is disposed in the receiving cavity. The vibration assembly divides the receiving cavity into a front cavity and a rear cavity. The sound outlet is connected to the front cavity. The magnetic assembly is disposed in the rear cavity. The magnetic yoke is disposed on the housing and seals the mounting port.

2. The loudspeaker according to claim 1, characterized in that, The inner wall of the housing has an annular vertical wall facing the speaker unit, and a support is provided at the bottom of the vertical wall. The vibration assembly includes a diaphragm and a voice coil disposed on the diaphragm, and the side of the diaphragm is connected to the support.

3. The loudspeaker according to claim 2, characterized in that, The outer shell is integrally formed with the vertical wall.

4. The loudspeaker according to claim 2, characterized in that, The magnetic component assembly includes a magnet assembly and a magnetic guide plate. The magnet assembly is disposed on the magnetic yoke, and the magnetic guide plate is disposed on the magnet assembly. The edge of the magnetic guide plate is connected to the support portion, and the diaphragm is sandwiched between the magnetic guide plate and the support portion.

5. The loudspeaker according to claim 2, characterized in that, A resonant cavity is provided inside the front cavity, the resonant cavity extends circumferentially along the front cavity and is in communication with the front cavity.

6. The loudspeaker according to claim 5, characterized in that, The front cavity is provided with a tube wall, one side of which is connected to a vertical wall, and the other side of which extends away from the diaphragm and abuts against and seals against the inner wall of the outer shell. The outer shell, the vertical wall and the tube wall form the resonant cavity.

7. The loudspeaker according to claim 5, characterized in that, There are multiple resonant cavities, one end of each resonant cavity is connected to the front cavity, and the other end is blocked.

8. The loudspeaker according to claim 7, characterized in that, Of the plurality of resonant cavities, at least two of the resonant cavities have different lengths.

9. The loudspeaker according to claim 8, characterized in that, The front cavity is mirror-imagely provided with a first cavity and a second cavity, and a first opening is provided at one end of the first cavity to form a first resonant cavity, a second opening is provided at one end of the second cavity, and a baffle is provided inside the second cavity, and a second resonant cavity is formed between the second opening of the second cavity and the baffle.

10. The loudspeaker according to claim 9, characterized in that, The front cavity is provided with a first resonant cavity, a second resonant cavity and a third resonant cavity. The first opening of the first resonant cavity is disposed opposite to the second opening of the second resonant cavity, and the third opening of the third resonant cavity is disposed at the end of the second resonant cavity away from the second opening.

11. The loudspeaker according to claim 2, characterized in that, The cavity is provided with a partition plate. One side of the partition plate is connected to the vertical wall, and the other sides of the partition plate are connected to the outer shell. A sound outlet is formed between the outer shell and the partition plate. The sound outlet is located at the end of the sound outlet. The portion of the vertical wall opposite to the sound outlet is provided with a through hole.

12. The loudspeaker according to any one of claims 2 to 11, characterized in that, An annular baffle wall is provided inside the outer shell, which divides the space inside the outer shell into the receiving cavity and the powder cavity. The receiving cavity is located on the inner side of the baffle wall, and the powder cavity is located on the outer side of the baffle wall. The baffle wall has multiple connecting holes, and the receiving cavity and the powder cavity are connected through the multiple connecting holes.

13. The loudspeaker according to claim 12, characterized in that, The retaining wall is connected to the vertical wall, and the retaining wall and the vertical wall are integrally formed.

14. The loudspeaker according to claim 12, characterized in that, The housing also includes a sealing cap, and the side wall of the housing has a filling hole. The sealing cap can be fastened to the filling hole to seal the filling hole.

15. An electronic product, characterized in that, The loudspeaker includes any one of claims 1 to 14.

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