Sound production monomer, sound production module and electronic device

Abstract

The application discloses a sound production monomer, a sound production module and electronic equipment, comprising a first sound production unit, a second sound production unit and a third sound production unit, wherein the first sound production unit comprises a first diaphragm assembly vibrating along a first direction; the second sound production unit and the first sound production unit are arranged back to back, the second sound production unit comprises a second diaphragm assembly vibrating along the first direction, and the sound production area of the first diaphragm assembly is greater than that of the second diaphragm assembly; the third sound production unit comprises a third diaphragm assembly vibrating along a second direction, the second direction is arranged at an angle with the first direction, the third sound production unit is a high-pitched sound production unit, and the working frequency band of the high-pitched sound production unit is greater than 2000 Hz. The application can offset the superposition sound field of the far field of the sound production monomer, improve the middle and high frequency offset effect, thereby greatly reducing the middle and high frequency leakage, improving the call privacy, and effectively widening the frequency band of the sound production monomer and improving the tone.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic technology, and in particular to a sound-generating unit, a sound-generating module, and an electronic device. Background Technology

[0002] Currently, the use of acoustic dipoles in loudspeakers has been widely applied in smart mobile terminals, improving call privacy. However, even with acoustic dipoles, the far-field cancellation bandwidth is limited to 2000Hz, restricting the mid-to-high frequency cancellation effect and still affecting call privacy.

[0003] Furthermore, when the speaker is operating, the front cavity uses a low-pass filter. When the driving signal frequency exceeds the front cavity resonant frequency Fh, the speaker loudness drops significantly. Currently, the front cavity resonant point of speaker modules in smart mobile terminals is typically less than 6000Hz, resulting in a narrower effective frequency band and poorer sound quality. Summary of the Invention

[0004] The main objective of this invention is to propose a sound-generating unit, a sound-generating module, and an electronic device, which aims to solve the problems in the prior art where the high-frequency cancellation effect of the loudspeaker is limited, affecting the privacy of calls and the effective bandwidth of the loudspeaker is narrowed, resulting in poor sound quality.

[0005] To achieve the above objectives, the present invention proposes a sound-generating unit, the sound-generating unit comprising:

[0006] The first sound-emitting unit includes a first diaphragm assembly that vibrates along a first direction;

[0007] The second sound-emitting unit is arranged back-to-back with the first sound-emitting unit. The second sound-emitting unit includes a second diaphragm assembly that vibrates along the first direction, and the sound-emitting area of ​​the first diaphragm assembly is larger than the sound-emitting area of ​​the second diaphragm assembly.

[0008] The third sound-generating unit includes a third diaphragm assembly that vibrates along a second direction, the second direction being set at an angle to the first direction, the third sound-generating unit being a high-frequency sound-generating unit, and the high-frequency sound-generating unit operating at a frequency greater than 2000Hz.

[0009] Optionally, the first diaphragm assembly and the second diaphragm assembly are respectively disposed on both sides of the sound-generating unit along the first direction. The sound-generating unit further includes a magnetic circuit assembly, which is located between the first diaphragm assembly and the second diaphragm assembly. The first sound-generating unit includes a first voice coil, and the second sound-generating unit includes a second voice coil. The magnetic circuit assembly is provided with a first magnetic gap and a second magnetic gap. One end of the first voice coil is connected to the first diaphragm assembly, and the other end of the first voice coil is inserted into the first magnetic gap. One end of the second voice coil is connected to the second diaphragm assembly, and the other end of the second voice coil is inserted into the second magnetic gap.

[0010] Optionally, the magnetic circuit assembly includes:

[0011] The first side magnet;

[0012] A ring magnet, wherein the first side magnet is located outside the ring magnet and forms the first magnetic gap with the ring magnet;

[0013] A central magnet, wherein the ring magnet surrounds the outer periphery of the central magnet and forms a second magnetic gap between the ring magnet and the central magnet.

[0014] Optionally, the third sound-generating unit includes a third side magnet, and a third magnetic gap is formed between the third side magnet and the first side magnet. The third sound-generating unit includes a third voice coil, one end of which is connected to the third diaphragm assembly, and the other end of which is inserted into the third magnetic gap.

[0015] Optionally, the third voice coil is a flat voice coil, and the axis of the flat voice coil is aligned with the first direction.

[0016] Optionally, the third voice coil has two extended sides spaced apart along the second direction, each extended side extending along a third direction, the third direction being perpendicular to the first direction and the second direction respectively, one of the extended sides being connected to the third diaphragm assembly and located outside the third magnetic gap, and the other extended side being inserted into the third magnetic gap.

[0017] Optionally, the sound-generating unit further includes a magnetic yoke and a magnetic plate spaced apart along the first direction. The magnetic circuit assembly is located between the magnetic yoke and the magnetic plate. The magnetic yoke includes a body portion and a bent extension portion. The magnetic circuit assembly is disposed on the body portion. The bent extension portion is disposed at one end of the body portion and bends away from the magnetic circuit assembly. The bent extension portion cooperates with the first side magnet to define a mounting groove. The third side magnet is located in the mounting groove and is spaced apart from the first side magnet to form the third magnetic gap.

[0018] Optionally, the magnetic guide plate includes a side magnetic guide plate and a center magnetic guide plate, the side of the first side magnet away from the magnetic guide yoke is connected to the side magnetic guide plate, and the sides of the ring magnet and the center magnet away from the magnetic guide yoke are both connected to the center magnetic guide plate.

[0019] Optionally, the sound-generating unit further includes a magnetic yoke and a magnetic plate spaced apart along the first direction, the magnetic circuit assembly is located between the magnetic yoke and the magnetic plate, the third sound-generating unit includes a central magnet, the magnetic yoke and the magnetic plate are respectively disposed on both sides of the central magnet and each forms a third magnetic gap with the central magnet, the third sound-generating unit includes a third voice coil, one end of the third voice coil is connected to the third diaphragm assembly, and the other end of the third voice coil is inserted into the third magnetic gap.

[0020] Optionally, the voice coil of the third sound-generating unit is a cylindrical voice coil, and the axis of the cylindrical voice coil is aligned with the second direction.

[0021] Optionally, the first sound-generating unit includes a first housing, and the first diaphragm assembly is mounted on the first housing;

[0022] The third sound-generating unit includes a third housing, which is mounted on one side of the first housing along the second direction, and the third diaphragm assembly is mounted on the third housing.

[0023] Optionally, the first sound-emitting unit has a first rear cavity, the second sound-emitting unit has a second rear cavity, and the third sound-emitting unit has a third rear cavity, wherein the first rear cavity and the third rear cavity are connected and the first rear cavity and the second rear cavity are isolated from each other; or, the first rear cavity, the second rear cavity and the third rear cavity are connected to each other; or, the first rear cavity, the second rear cavity and the third rear cavity are isolated from each other in pairs.

[0024] The present invention also proposes a sound-generating module, the sound-generating module comprising a protective shell and a sound-generating unit as described above installed inside the protective shell, the protective shell having a first sound outlet channel and a third sound outlet channel, the first sound-generating unit having a first front cavity, the first sound outlet channel communicating with the first front cavity, and the third sound-generating unit having a third front cavity, the third sound outlet channel communicating with the third front cavity.

[0025] The present invention also proposes an electronic device, the electronic device comprising a housing and a sound-emitting module as described above housed within the housing, the housing having a first sound outlet, a second sound outlet and a third sound outlet, the first sound outlet communicating with a first sound outlet channel, the second sound-emitting unit having a second front cavity, the second sound outlet communicating with the second front cavity, and the third sound outlet communicating with the third sound outlet channel.

[0026] The present invention relates to a speaker unit comprising a first speaker unit, a second speaker unit, and a tweeter speaker unit. The first and second speaker units are arranged back-to-back, with the first diaphragm assembly of the first speaker unit and the second diaphragm assembly of the second speaker unit both vibrating along a first direction. The third diaphragm assembly of the tweeter speaker unit vibrates along a second direction, with the first and second directions forming an angle. The tweeter speaker unit operates at a frequency greater than 2000Hz. This speaker unit not only cancels the superimposed sound field in the far field of the speaker unit, improving the mid-to-high frequency cancellation effect and thus significantly reducing mid-to-high frequency sound leakage, further enhancing call privacy, but also effectively widens the frequency band of the speaker unit, improving timbre. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the assembly of a sound-generating unit according to an embodiment of the present invention;

[0029] Figure 2 This is an exploded view of a sound-generating monomer according to an embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional schematic diagram of a sound-generating unit according to an embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional schematic diagram of a sound-generating unit according to another embodiment of the present invention;

[0032] Figure 5 This is a plan view of a sound-generating module according to an embodiment of the present invention;

[0033] Figure 6 for Figure 5 Schematic diagram of the BB section;

[0034] Figure 7 for Figure 5 Schematic diagram of section AA;

[0035] Figure 8 This is a partial structural schematic diagram of the electronic device of the present invention;

[0036] Figure 9 As an example Figure 8 Schematic diagram of the DD section;

[0037] Figure 10 As an example Figure 8Schematic diagram of the C-section;

[0038] Figure 11 As another embodiment Figure 8 Schematic diagram of the DD section;

[0039] Figure 12 As another embodiment Figure 8 Schematic diagram of the DD section;

[0040] Figure 13 Another embodiment Figure 8 Schematic diagram of the DD section;

[0041] Figure 14 Another embodiment Figure 8 Schematic diagram of the DD section.

[0042] Explanation of icon numbers:

[0043]

[0044]

[0045] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0048] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0049] like Figures 1 to 4 As shown, the present invention proposes a sound-generating unit 100, which includes a first sound-generating unit 10, a second sound-generating unit 20, and a third sound-generating unit 30. The first sound-generating unit 10 includes a first diaphragm assembly 11 that vibrates along a first direction. The second sound-generating unit 20 is arranged back-to-back with the first sound-generating unit 10. The second sound-generating unit 20 includes a second diaphragm assembly 21 that vibrates along the first direction, and the sound-generating area of ​​the first diaphragm assembly 11 is larger than the sound-generating area of ​​the second diaphragm assembly 21. The third sound-generating unit 30 includes a third diaphragm assembly 31 that vibrates along a second direction. The second direction is arranged at an angle to the first direction. The third sound-generating unit 30 is a high-frequency sound-generating unit 30a, and the operating frequency band of the high-frequency sound-generating unit 30a is greater than 2000Hz.

[0050] like Figures 5 to 14 As shown, the sound-emitting unit 100 of the present invention can be a loudspeaker unit, and the sound-emitting unit 100 can be applied in the sound-emitting module 200 of the electronic device 300. The electronic device 300 can be a computer, a mobile phone, a speaker, or a car speaker used in automobiles, etc. This embodiment uses the sound-emitting unit 100 as a loudspeaker unit as an example for explanation.

[0051] In one embodiment, the first sound-generating unit 10 is a loudspeaker unit, hereinafter referred to as SPK unit 10a, and the second sound-generating unit 20 is a receiver unit, hereinafter referred to as RCV unit 20a. The first diaphragm assembly 11 of SPK unit 10a and the second diaphragm assembly 21 of RCV unit 20a both vibrate and generate sound in a first direction. The first diaphragm assembly 11 has a larger sound-generating area, while the second diaphragm assembly 21 has a smaller sound-generating area, so as to meet the sound generation requirements of SPK unit 10a and RCV unit 20a respectively.

[0052] like Figures 1 to 4As shown, the SPK unit 10a and the RCV unit 20a are arranged back-to-back. Specifically, the RCV unit 20a is located above the SPK unit 10a. The first diaphragm assembly 11 of the SPK unit 10a and the second diaphragm assembly 21 of the RCV unit 20a both vibrate along a first direction, while the third diaphragm assembly 31 of the tweeter unit 30a vibrates along a second direction. The second direction is arranged at an angle to the first direction. In one embodiment, the first direction is... Figures 1 to 4 The vertical direction is shown, and the second direction is... Figures 1 to 4 The front-back direction shown is perpendicular to the second direction. In other embodiments, the first and second directions are not the same, i.e., they are set at an angle. This embodiment is illustrated by taking the first direction as the up-down direction and the second direction as the front-back direction.

[0053] The speaker unit 100 has two operating modes: speaker mode (SPK mode) and receiver mode (RCV mode).

[0054] In RCV mode, SPK unit 10a and RCV unit 20a vibrate in the same direction, generating sound waves with the same amplitude but opposite phase, forming a dipole effect and improving call privacy. Furthermore, the tweeter unit 30a operates in a frequency band greater than 2000Hz, which can cancel the superimposed sound field beyond 2000Hz in the far field of the tweeter unit 100, improving the mid-to-high frequency cancellation effect. This allows the far-field cancellation bandwidth to be greater than 2000Hz, widening the sound cancellation band and significantly reducing mid-to-high frequency sound leakage, further enhancing call privacy. It should be noted that the superimposed sound field referred to in this invention includes both the reinforced sound field and the canceled sound field.

[0055] In SPK mode, only SPK unit 10a and tweeter 30a are working. SPK unit 10a acts as a bass driver and works in crossover with tweeter 30a, effectively widening the frequency band of driver 100 and improving timbre.

[0056] The present invention uses a single-unit speaker 100 in a sound-generating module 200. The sound-generating module 200 employs frequency division, with the division point set after the resonant frequency Fh of the front cavity of the SPK unit 10a. Furthermore, the division point frequency cannot be the resonant frequency F0 of the tweeter unit 30a; that is, the division point frequency is greater than Fh but not equal to F0. When the driving frequency is less than or equal to the division point frequency, the SPK unit 10a operates; when the driving frequency is greater than the division point frequency, the tweeter unit 30a operates. In other words, after the transient signal is framed, low-frequency signals below the division point frequency are reproduced as bass, and high-frequency signals above the division point frequency are reproduced as treble. Although the SPK unit 10a and the tweeter unit 30a are frequency-divided in the frequency domain, because the reproduced frame contains both low-frequency and high-frequency signals, the SPK unit 10a and the tweeter unit 30a work together in the time domain.

[0057] Understandably, the front cavity resonant frequency Fh can be 6000Hz, and the crossover frequency is greater than 6000Hz. When the driving frequency is greater than the crossover frequency, the tweeter unit 30a works without reducing the loudness of the tweeter unit 100.

[0058] If the upper limit frequency of the cancellation of the tweeter unit 30a is set to Fc, that is, the cancellation frequency of the tweeter unit 30a is 2000Hz~Fc, then it is necessary to ensure that the resonant frequency F0 of the tweeter unit 30a is less than 2000Hz, or F0>Fc.

[0059] The present invention's sound-generating unit 100 comprises a first sound-generating unit 10, a second sound-generating unit 20, and a tweeter sound-generating unit 30a. The first sound-generating unit 10 and the second sound-generating unit 20 are arranged back-to-back, and the first diaphragm assembly 11 of the first sound-generating unit 10 and the second diaphragm assembly 21 of the second sound-generating unit 20 both vibrate along a first direction. The third diaphragm assembly 31 of the tweeter sound-generating unit 30a vibrates along a second direction, and the first direction and the second direction are arranged at an angle. The operating frequency band of the tweeter sound-generating unit 30a is greater than 2000Hz. The sound-generating unit 100 of the present invention can not only cancel the superimposed sound field of the far field of the sound-generating unit 100, improve the mid-high frequency cancellation effect, thereby significantly reducing mid-high frequency sound leakage and further improving call privacy, but also effectively widen the frequency band of the sound-generating unit 100 and improve the timbre.

[0060] In one embodiment, the first diaphragm assembly 11 and the second diaphragm assembly 21 are respectively disposed on both sides of the sound-generating unit 100 along the first direction. The sound-generating unit 100 also includes a magnetic circuit assembly 40, which is located between the first diaphragm assembly 11 and the second diaphragm assembly 21. The first sound-generating unit 10 includes a first voice coil 12, and the second sound-generating unit 20 includes a second voice coil 22. The magnetic circuit assembly 40 is provided with a first magnetic gap 41 and a second magnetic gap 42. One end of the first voice coil 12 is connected to the first diaphragm assembly 11, and the other end of the first voice coil 12 is inserted into the first magnetic gap 41. One end of the second voice coil 22 is connected to the second diaphragm assembly 21, and the other end of the second voice coil 22 is inserted into the second magnetic gap 42.

[0061] like Figures 1 to 4 As shown, the first diaphragm assembly 11 is disposed on the lower side of the sound-generating unit 100, the second diaphragm assembly 21 is disposed on the upper side of the sound-generating unit 100, and the magnetic circuit assembly 40 is located between the first diaphragm assembly 11 and the second diaphragm assembly 21. The magnetic circuit assembly 40 has a first magnetic gap 41 for the upper end of the first voice coil 12 to be inserted, realizing the vertical vibration of the first voice coil 12 and the first diaphragm assembly 11. The magnetic circuit assembly 40 also has a second magnetic gap 42 for the lower end of the second voice coil 22 to be inserted, realizing the vertical vibration of the second voice coil 22 and the second diaphragm assembly 21. In this embodiment, the magnetic circuit assembly 40 of the sound-generating unit 100 combines the first magnetic gap 41 and the second magnetic gap 42, allowing the first sound-generating unit 10 and the second sound-generating unit 20 to share the magnetic circuit assembly 40, simplifying the structure of the magnetic circuit assembly 40 and making it more compact. Moreover, the sharing of the magnetic circuit assembly 40 by the first sound-generating unit 10 and the second sound-generating unit 20 can also reduce the thickness of the sound-generating unit 100, meeting the requirements of thin design.

[0062] In one embodiment, the magnetic circuit assembly 40 includes a first side magnet 43, a ring magnet 44, and a central magnet 45. The first side magnet 43 is located outside the ring magnet 44 and forms a first magnetic gap 41 between the ring magnet 44 and the ring magnet 44. The ring magnet 44 surrounds the outer periphery of the central magnet 45 and forms a second magnetic gap 42 between the ring magnet 44 and the central magnet 45. By arranging the first side magnet 43, the ring magnet 44, and the central magnet 45, the magnetic circuit assembly 40 combines the first magnetic gap 41 and the second magnetic gap 42, resulting in a reasonable and simple structure.

[0063] Furthermore, the third sound-generating unit 30 includes a third side magnet 33, with a third magnetic gap 34 formed between the third side magnet 33 and the first side magnet 43. The third sound-generating unit 30 also includes a third voice coil 32, with one end (front end) of the third voice coil 32 connected to the third diaphragm assembly 31, and the other end (rear end) of the third voice coil 32 inserted into the third magnetic gap 34, enabling the third voice coil 32 and the third diaphragm assembly 31 to vibrate back and forth. The first side magnet 43 can cooperate with the ring magnet 44 to form the first magnetic gap 41, or it can cooperate with the first side magnet 43 to form the third magnetic gap 34. That is, the third sound-generating unit 30 and the first sound-generating unit 10 share the first side magnet 43, simplifying the structure of the magnetic circuit system of the sound-generating unit 100 and improving the structural compactness. The third side magnet 33 and the first side magnet 43 can form a complete magnetic circuit, providing a high magnetic induction intensity magnetic field for the tweeter unit 30a without reducing the performance of the first sound-generating unit 10 and the second sound-generating unit 20BL.

[0064] like Figure 2 and Figure 4 As shown, in one embodiment, the third voice coil 32 is a flat voice coil, and the axis of the flat voice coil is aligned with the first direction, that is, the axis of the flat voice coil extends in the vertical direction. The flat voice coil is thinner and occupies less space in the vertical direction, improving the structural compactness of the sound-generating unit 100.

[0065] Furthermore, the third voice coil 32 is provided with two extended edges 321 spaced apart along the second direction. Each extended edge 321 extends along a third direction, which is perpendicular to the first and second directions respectively. One extended edge 321 is connected to the third diaphragm assembly 31 and located outside the third magnetic gap 34, while the other extended edge 321 is inserted into the third magnetic gap 34.

[0066] like Figures 1 to 4 As shown, the third direction is the left-right direction, which is perpendicular to the first and second directions. The two extended sides 321 of the flat voice coil are distributed at intervals, and each extended side 321 extends in the left-right direction. The extended side 321 located on the front side is connected to the third diaphragm assembly 31 and is located outside the third magnetic gap 34, providing support for the third diaphragm assembly 31. The extended side 321 located on the rear side is inserted into the third magnetic gap 34. When there is signal excitation, it provides driving force to the third diaphragm assembly 31 to achieve front-back vibration. The structural design is reasonable.

[0067] In one embodiment, the sound-generating unit 100 further includes a magnetic yoke 50 and a magnetic plate 60 spaced apart along a first direction. A magnetic circuit assembly 40 is located between the magnetic yoke 50 and the magnetic plate 60. The magnetic yoke 50 includes a body portion 51 and a bent extension portion 52. The magnetic circuit assembly 40 is disposed on the body portion 51. The bent extension portion 52 is disposed at one end of the body portion 51 and bends away from the magnetic circuit assembly 40. The bent extension portion 52 cooperates with the first side magnet 43 to define a mounting groove 53. A third side magnet 33 is located in the mounting groove 53 and is spaced apart from the first side magnet 43 to form a third magnetic gap 34.

[0068] like Figure 2 and Figure 3 As shown, the magnetic yoke 50 is located above the magnetic plate 60, and the magnetic circuit assembly 40 of the sound-generating unit 100 is located between the magnetic yoke 50 and the magnetic plate 60. The magnetic yoke 50 and the magnetic plate 60 serve to guide magnetism and correct magnetic field lines. To facilitate the installation of the third side magnet 33, the front end of the main body 51 of the magnetic yoke 50 is bent upward to form a bent extension 52. The bent extension 52 cooperates with the first side magnet 43 to define a mounting groove 53, thereby realizing the installation of the third side magnet 33. The structural design is ingenious and reasonable. The magnetic yoke 50 can install both the magnetic circuit assembly 40 and the third side magnet 33, which has strong compatibility and good structural compactness.

[0069] In one embodiment, the magnetic plate 60 includes a side magnetic plate 61 and a central magnetic plate 62. The side of the first side magnet 43 facing away from the magnetic yoke 50 is connected to the side magnetic plate 61, and the side of the ring magnet 44 and the central magnet 45 facing away from the magnetic yoke 50 are both connected to the central magnetic plate 62.

[0070] like Figure 2 and Figure 3 As shown, the side magnetic plate 61 is positioned corresponding to the first side magnet 43, and the lower side of the first side magnet 43 is connected to the side magnetic plate 61. The side magnetic plate 61 serves to guide magnetism and correct magnetic field lines. The center magnetic plate 62 is positioned corresponding to the ring magnet 44 and the center magnet 45, and the lower sides of the ring magnet 44 and the center magnet 45, which are away from the magnetic yoke 50, are both connected to the center magnetic plate 62. The center magnetic plate 62 serves to guide magnetism and correct magnetic field lines. The ring magnet 44 and the center magnet 45 share the center magnetic plate 62, simplifying the structure of the sound-generating unit 100. A secondary magnetic plate 46 is also provided on the side of the center magnet 45 facing the magnetic yoke 50. The secondary magnetic plate 46 also serves to guide magnetism and correct magnetic field lines.

[0071] like Figure 4As shown, in another embodiment, the sound-generating unit 100 further includes a magnetic yoke 50 and a magnetic plate 60 spaced apart along a first direction, a magnetic circuit assembly 40 located between the magnetic yoke 50 and the magnetic plate 60, a third sound-generating unit 30 including a central magnet 35, the magnetic yoke 50 and the magnetic plate 60 being disposed on both sides of the central magnet 35 and forming a third magnetic gap 34 between them, the third sound-generating unit 30 including a third voice coil 32, one end of the third voice coil 32 being connected to the third diaphragm assembly 31, and the other end of the third voice coil 32 being inserted into the third magnetic gap 34.

[0072] Specifically, the magnetic yoke 50 is located above the magnetic plate 60, and the magnetic circuit assembly 40 of the sound-generating unit 100 is located between the magnetic yoke 50 and the magnetic plate 60. The magnetic yoke 50 and the magnetic plate 60 serve to guide magnetism and correct magnetic field lines. The third sound-generating unit 30 includes a central magnet 35, which can be arranged adjacent to the first side magnet 43. The magnetic yoke 50 and the magnetic plate 60 are respectively arranged on the upper and lower sides of the central magnet 35, and both form a third magnetic gap 34 with the central magnet 35. The front end of the third voice coil 32 is connected to the third diaphragm assembly 31, and the rear end of the third voice coil 32 is inserted into the third magnetic gap 34, realizing the back-and-forth vibration of the third voice coil 32 and the third diaphragm assembly 31.

[0073] In this embodiment, a central magnetic guide plate 39 is also provided on the side of the central magnet 35 facing the third diaphragm assembly 31. The central magnetic guide plate 39 can play the role of guiding magnetism and correcting magnetic field lines. Furthermore, the magnetic guide plate 60 includes a side magnetic guide plate 61 and a central magnetic guide plate 62. The side of the first side magnet 43 facing away from the magnetic guide yoke 50 is connected to the side magnetic guide plate 61, and the sides of the ring magnet 44 and the central magnet 45 facing away from the magnetic guide yoke 50 are both connected to the central magnetic guide plate 62.

[0074] Furthermore, the voice coil of the third sound-generating unit 30 is a cylindrical voice coil, and the axis of the cylindrical voice coil is aligned with the second direction, that is, the axis of the cylindrical voice coil extends in the front-to-back direction. The cylindrical voice coil has the same shape as the third diaphragm assembly 31, which facilitates its installation with the third diaphragm assembly 31, and the contact area between the cylindrical voice coil and the third diaphragm assembly 31 is relatively large, which is beneficial for driving the third diaphragm assembly 31 to vibrate.

[0075] like Figures 1 to 4 As shown, in one embodiment, the first sound-generating unit 10 includes a first housing 13, and a first diaphragm assembly 11 is mounted on the first housing 13; the third sound-generating unit 30 includes a third housing 36, which is mounted on one side of the first housing 13 along the second direction, and a third diaphragm assembly 31 is mounted on the third housing 36.

[0076] The first diaphragm assembly 11 is mounted on the first housing 13, realizing the assembly of the first diaphragm assembly 11 and the first housing 13. The third diaphragm assembly 31 is mounted on the third housing 36, realizing the assembly of the third diaphragm assembly 31 and the third housing 36. Furthermore, the third housing 36 is mounted on one side of the first housing 13 along the second direction, that is, along the front-rear direction. The structural design is reasonable and convenient for assembly. In one embodiment, the third housing 36 is mounted on the front side of the first housing 13.

[0077] Furthermore, the first housing 13 and the third housing 36 are formed as a single molded part, eliminating assembly steps and assembly errors, making them easier to manufacture. Moreover, there is no need to manufacture the first housing 13 and the third housing 36 separately, reducing manufacturing costs. Furthermore, the integrated molding of the first housing 13 and the third housing 36 achieves an integrated design, resulting in a compact structure, reduced space occupation, and facilitating miniaturization. Even further, both the first housing 13 and the third housing 36 are made of plastic materials, and the single injection molding of the first housing 13 and the third housing 36 facilitates manufacturing, makes the materials readily available, and results in a lighter weight, meeting the requirements of lightweight design.

[0078] In one embodiment, the first housing 13 extends along a second direction, the third housing 36 extends along a first direction, and the third housing 36 is located on one side of the first housing 13.

[0079] like Figure 2 As shown, the first housing 13 extends in the front-to-back direction, that is, it extends in the horizontal direction, so as to install the first diaphragm assembly 11 and realize the first diaphragm assembly 11 vibrating in the up-down direction; the third housing 36 extends in the up-down direction, that is, it extends in the vertical direction, so as to install the third diaphragm assembly 31 and realize the third diaphragm assembly 31 vibrating in the front-to-back direction. Moreover, the third housing 36 is located on the front side of the first housing 13, and the structural design is reasonable and compact.

[0080] like Figures 5 to 14 As shown, a first rear cavity 15 is formed between the first diaphragm assembly 11 and the first housing 13. The second sound-generating unit 20 includes a second housing 23. A second rear cavity 25 is formed between the second diaphragm assembly 21 and the second housing 23. A third rear cavity 38 is formed between the third diaphragm assembly 31 and the third housing 36. The first diaphragm assembly 11 includes an annular first diaphragm 111 and a first vibrating plate connected to the inner edge of the first diaphragm 111. The second diaphragm assembly 21 includes an annular second diaphragm 211 and a second vibrating plate connected to the inner edge of the second diaphragm 211. The third diaphragm assembly 31 includes an annular third diaphragm 311 and a third vibrating plate connected to the inner edge of the third diaphragm 311.

[0081] like Figure 1 and Figure 2As shown, the sound-generating unit 100 also includes an FPCB 70, a front cover 26, a steel mesh 80, and a centering support 90. The FPCB 70 enables the circuit of the sound-generating unit 100 to conduct. The front cover 26 is installed on the second housing 23 and serves a protective function. The steel mesh 80 is installed on the magnetic yoke 50 and is located outside the sound hole of the sound-generating unit 100 to isolate sound-absorbing particles. The centering support 90 serves a centering function to prevent polarization.

[0082] like Figures 5 to 10 As shown, in one embodiment, the first sound-emitting unit 10 has a first rear cavity 15, the second sound-emitting unit 20 has a second rear cavity 25, and the third sound-emitting unit 30 has a third rear cavity 38. The first rear cavity 15 and the third rear cavity 38 are connected, and the first rear cavity 15 and the second rear cavity 25 are isolated from each other. It can be understood that since the first rear cavity 15 and the third rear cavity 38 are connected, and the first rear cavity 15 and the second rear cavity 25 are isolated from each other, the third rear cavity 38 is also isolated from the second rear cavity 25. The second rear cavity 25 can be connected to the rear cavity of the electronic device 300 described later.

[0083] In this embodiment, when in SPK mode, only SPK unit 10a and tweeter unit 30a are working, and tweeter unit 30a widens the playback bandwidth.

[0084] In RCV mode, SPK unit 10a and RCV unit 20a vibrate in the same direction, producing sound waves with the same amplitude but opposite phase, forming an acoustic dipole effect and improving call privacy. The tweeter unit 30a operates at a higher frequency, such as above 2000Hz, to cancel the superimposed sound field of the far field of the tweeter unit 100, improving the mid-to-high frequency cancellation effect and thus significantly reducing mid-to-high frequency sound leakage, further enhancing call privacy.

[0085] like Figure 8 , Figure 11 and Figure 12 As shown, in another embodiment, the first sound-emitting unit 10 has a first rear cavity 15, the second sound-emitting unit 20 has a second rear cavity 25, and the third sound-emitting unit 30 has a third rear cavity 38, with the first rear cavity 15, the second rear cavity 25, and the third rear cavity 38 interconnected.

[0086] In this embodiment, when in SPK mode, SPK unit 10a, RCV unit 20a and tweeter unit 30a work simultaneously. SPK unit 10a and RCV unit 20a vibrate in opposite directions to generate sound waves with the same phase. The two sound waves are superimposed to improve the playback effect, and tweeter unit 30a widens the sound playback frequency band.

[0087] In RCV mode, there are two scenarios:

[0088] In the first scenario, only the RCV unit 20a and the tweeter unit 30a are working. Since the second rear cavity 25 and the third rear cavity 38 are interconnected, when the RCV unit 20a is working, it drives the SPK unit 10a to vibrate with the same amplitude but opposite phase, creating an acoustic dipole effect and improving call privacy. The tweeter unit 30a operates in a frequency band greater than 2000Hz, canceling the superimposed sound field of the far field of the tweeter unit 100, improving the mid-to-high frequency cancellation effect, thereby significantly reducing mid-to-high frequency sound leakage and further enhancing call privacy.

[0089] In the second scenario, all three units—SPK unit 10a, RCV unit 20a, and tweeter unit 30a—are operational. SPK unit 10a and RCV unit 20a vibrate in the same direction, producing sound waves with the same amplitude but opposite phase, creating an acoustic dipole effect and enhancing call privacy. Tweeter unit 30a operates at a frequency greater than 2000Hz, canceling the superimposed sound field from the far field of the tweeter unit 100, improving the mid-to-high frequency cancellation effect, thereby significantly reducing mid-to-high frequency sound leakage and further enhancing call privacy.

[0090] like Figure 8 , Figure 13 and Figure 14 As shown, in another embodiment, the first sound-emitting unit 10 has a first rear cavity 15, the second sound-emitting unit 20 has a second rear cavity 25, and the third sound-emitting unit 30 has a third rear cavity 38. The first rear cavity 15, the second rear cavity 25, and the third rear cavity 38 are isolated from each other, that is, the first rear cavity 15, the second rear cavity 25, and the third rear cavity 38 are independently arranged.

[0091] In this embodiment, when in SPK mode, only SPK unit 10a and tweeter unit 30a are working, and tweeter unit 30a widens the playback bandwidth.

[0092] In RCV mode, SPK unit 10a and RCV unit 20a vibrate in the same direction, producing sound waves with the same amplitude but opposite phase, forming an acoustic dipole effect and improving call privacy. The tweeter unit 30a operates at a higher frequency, such as above 2000Hz, to cancel the superimposed sound field of the far field of the tweeter unit 100, improving the mid-to-high frequency cancellation effect and thus significantly reducing mid-to-high frequency sound leakage, further enhancing call privacy.

[0093] like Figures 5 to 7As shown, the present invention also proposes a sound-generating module 200, which includes a protective shell 201 and a sound-generating unit 100 as described above installed in the protective shell 201. The protective shell 201 has a first sound outlet channel 202 and a third sound outlet channel 203. The first sound-generating unit 10 has a first front cavity 14, and the first sound outlet channel 202 is connected to the first front cavity 14. The third sound-generating unit 30 has a third front cavity 37, and the third sound outlet channel 203 is connected to the third front cavity 37.

[0094] The sound-generating unit 100 is installed inside the protective shell 201. The first diaphragm assembly 11 of the first sound-generating unit 10 and the protective shell 201 form a first front cavity 14, and the first sound outlet channel 202 communicates with the first front cavity 14 to transmit sound. The third diaphragm assembly 31 of the third sound-generating unit 30 and the protective shell 201 form a third front cavity 37, and the third sound outlet channel 203 communicates with the third front cavity 37 to transmit sound. The second sound-generating unit 20 has a second front cavity 24, and the second diaphragm assembly 21 of the second sound-generating unit 20 and the front cover 26 form the second front cavity 24 to transmit sound.

[0095] The specific structure of the sound-generating unit 100 in the sound-generating module 200 is as described in the above embodiments. Since the sound-generating module 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0096] like Figures 8 to 14 As shown, the present invention also proposes an electronic device 300, which includes a housing 301 and a sound-emitting module 200 as described above housed within the housing 301. The housing 301 has a first sound outlet 302, a second sound outlet 303, and a third sound outlet 304. The first sound outlet 302 is connected to a first sound outlet channel 202. The second sound-emitting unit 20 has a second front cavity 24. The second sound outlet 303 is connected to the second front cavity 24, and the third sound outlet 304 is connected to the third sound outlet channel 203.

[0097] In one embodiment, the electronic device 300 may be a computer, a mobile phone, a speaker, or a car speaker used in automobiles, etc. The electronic device 300 of this invention will be described using a mobile phone as an example. The mobile phone has a frame and a screen. It should be noted that... Figures 9 to 14 The dashed arrows in the image indicate the direction of sound transmission.

[0098] Specifically, the sound-emitting module 200 is positioned near the top of the housing 301. The top of the middle frame of the housing 301 has a first sound outlet 302 and a third sound outlet 304. A mounting edge is formed between the top of the middle frame of the housing 301 and the top of the screen, and a second sound outlet 303 is located on the mounting edge. The first sound outlet 302 communicates with the first sound outlet channel 202 to emit sound; the second sound outlet 303 communicates with the second front cavity 24 to emit sound; and the third sound outlet 304 communicates with the third sound outlet channel 203 to emit sound.

[0099] The specific structure of the electronic device 300 is as described in the above embodiments. Since the electronic device 300 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0100] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A sound-emitting monomer, characterized in that, The sound-generating unit includes: The first sound-emitting unit includes a first diaphragm assembly that vibrates along a first direction; The second sound-emitting unit is arranged back-to-back with the first sound-emitting unit. The second sound-emitting unit includes a second diaphragm assembly that vibrates along the first direction, and the sound-emitting area of ​​the first diaphragm assembly is larger than the sound-emitting area of ​​the second diaphragm assembly. The third sound-emitting unit includes a third diaphragm assembly that vibrates along a second direction, the second direction being set at an angle to the first direction, the third sound-emitting unit being a high-frequency sound-emitting unit, and the operating frequency band of the high-frequency sound-emitting unit being greater than 2000Hz; The sound-emitting unit has a receiver mode; when the sound-emitting unit is in the receiver mode, the first sound-emitting unit and the second sound-emitting unit vibrate in the same direction to generate sound waves with the same amplitude but opposite phase. The third sound-emitting unit operates in a frequency band greater than 2000Hz to cancel the superimposed sound field after 2000Hz in the far field of the sound-emitting unit.

2. The sound-generating unit as described in claim 1, characterized in that, The first diaphragm assembly and the second diaphragm assembly are respectively disposed on both sides of the sound-generating unit along the first direction. The sound-generating unit also includes a magnetic circuit assembly, which is located between the first diaphragm assembly and the second diaphragm assembly. The first sound-generating unit includes a first voice coil, and the second sound-generating unit includes a second voice coil. The magnetic circuit assembly is provided with a first magnetic gap and a second magnetic gap. One end of the first voice coil is connected to the first diaphragm assembly, and the other end of the first voice coil is inserted into the first magnetic gap. One end of the second voice coil is connected to the second diaphragm assembly, and the other end of the second voice coil is inserted into the second magnetic gap.

3. The sound-generating unit as described in claim 2, characterized in that, The magnetic circuit assembly includes: The first side magnet; A ring magnet, wherein the first side magnet is located outside the ring magnet and forms the first magnetic gap with the ring magnet; A central magnet, wherein the ring magnet surrounds the outer periphery of the central magnet and forms a second magnetic gap between the ring magnet and the central magnet.

4. The sound-generating unit as described in claim 3, characterized in that, The third sound-generating unit includes a third side magnet, and a third magnetic gap is formed between the third side magnet and the first side magnet. The third sound-generating unit includes a third voice coil, one end of which is connected to the third diaphragm assembly, and the other end of which is inserted into the third magnetic gap.

5. The sound-generating unit as described in claim 4, characterized in that, The third voice coil is a flat voice coil, and the axis of the flat voice coil is aligned with the first direction.

6. The sound-generating unit as described in claim 5, characterized in that, The third voice coil has two extended sides spaced apart along the second direction. Each extended side extends along a third direction, which is perpendicular to the first direction and the second direction, respectively. One of the extended sides is connected to the third diaphragm assembly and is located outside the third magnetic gap, while the other extended side is inserted into the third magnetic gap.

7. The sound-generating unit as described in claim 4, characterized in that, The sound-generating unit further includes a magnetic yoke and a magnetic plate spaced apart along the first direction. The magnetic circuit assembly is located between the magnetic yoke and the magnetic plate. The magnetic yoke includes a body portion and a bent extension portion. The magnetic circuit assembly is disposed on the body portion. The bent extension portion is disposed at one end of the body portion and bends away from the magnetic circuit assembly. The bent extension portion cooperates with the first side magnet to define a mounting groove. The third side magnet is located in the mounting groove and is spaced apart from the first side magnet to form the third magnetic gap.

8. The sound-generating monomer as described in claim 7, characterized in that, The magnetic guide plate includes a side magnetic guide plate and a center magnetic guide plate. The side of the first side magnet away from the magnetic guide yoke is connected to the side magnetic guide plate. The sides of the ring magnet and the center magnet away from the magnetic guide yoke are both connected to the center magnetic guide plate.

9. The sound-generating monomer as described in claim 3, characterized in that, The sound-generating unit further includes a magnetic yoke and a magnetic plate spaced apart along the first direction. The magnetic circuit assembly is located between the magnetic yoke and the magnetic plate. The third sound-generating unit includes a central magnet. The magnetic yoke and the magnetic plate are respectively disposed on both sides of the central magnet and form a third magnetic gap with the central magnet. The third sound-generating unit includes a third voice coil. One end of the third voice coil is connected to the third diaphragm assembly, and the other end of the third voice coil is inserted into the third magnetic gap.

10. The sound-generating unit as described in claim 9, characterized in that, The voice coil of the third sound-generating unit is a cylindrical voice coil, and the axis of the cylindrical voice coil is aligned with the second direction.

11. The sound-generating unit as described in any one of claims 1-10, characterized in that, The first sound-generating unit includes a first housing, and the first diaphragm assembly is mounted on the first housing; The third sound-generating unit includes a third housing, which is mounted on one side of the first housing along the second direction, and the third diaphragm assembly is mounted on the third housing.

12. The sound-generating unit as described in any one of claims 1-10, characterized in that, The first sound-emitting unit has a first rear cavity, the second sound-emitting unit has a second rear cavity, and the third sound-emitting unit has a third rear cavity; The first rear cavity is connected to the third rear cavity, and the first rear cavity is isolated from the second rear cavity; Alternatively, the first rear cavity, the second rear cavity, and the third rear cavity are interconnected; Alternatively, the first rear cavity, the second rear cavity, and the third rear cavity may be isolated from each other.

13. A sound-generating module, characterized in that, The sound-generating module includes a protective shell and a sound-generating unit as described in any one of claims 1-12, which is installed inside the protective shell. The protective shell has a first sound-emitting channel and a third sound-emitting channel. The first sound-generating unit has a first front cavity, and the first sound-emitting channel is connected to the first front cavity. The third sound-generating unit has a third front cavity, and the third sound-emitting channel is connected to the third front cavity.

14. An electronic device, characterized in that, The electronic device includes a housing and a sound-emitting module as described in claim 13 housed within the housing. The housing has a first sound outlet, a second sound outlet, and a third sound outlet. The first sound outlet communicates with a first sound outlet channel. The second sound-emitting unit has a second front cavity. The second sound outlet communicates with the second front cavity. The third sound outlet communicates with the third sound outlet channel.

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