Speakers and electronic devices

Abstract

This application relates to the field of sound-generating devices and aims to solve the problem of poor sealing performance in known loudspeakers, providing loudspeakers and electronic devices. The loudspeaker includes a magnetic circuit assembly, a vibrating assembly, and an adapter ring. The magnetic circuit assembly includes a central magnetic circuit assembly and a peripheral magnetic circuit assembly, which are spaced apart to define a magnetic gap; the peripheral magnetic circuit assembly includes a first peripheral magnetic element and a second peripheral magnetic element. The vibrating assembly includes a first diaphragm, with a first connecting edge on its inner side. The adapter ring has a first surface and a second surface opposite to each other along the thickness direction of the loudspeaker. The first connecting edge is sandwiched between the first surface and the first peripheral magnetic element; the second surface is sealingly connected to the surface of the second peripheral magnetic element facing the first peripheral magnetic element. The advantages of this application are a large bonding width and good sealing performance.

Description

Technical Field

[0001] This application relates to the field of sound-generating devices, and more specifically, to loudspeakers and electronic devices. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals and is widely used in electronic devices such as mobile phones and audio equipment.

[0003] In some known loudspeakers, the bonding width between the diaphragm and the magnetic circuit assembly is small, resulting in poor sealing performance at the joint. This can cause moisture entering from the front cavity to enter the magnetic gap and other parts of the loudspeaker, thus affecting the loudspeaker's performance. Utility Model Content

[0004] This application provides a loudspeaker and electronic equipment to address the problem of poor sealing performance of known loudspeakers.

[0005] In a first aspect, embodiments of this application provide a loudspeaker, which includes a magnetic circuit assembly, a resonant assembly, and an adapter ring. The magnetic circuit assembly includes an intermediate magnetic circuit assembly and a peripheral magnetic circuit assembly, which are spaced apart to define a magnetic gap. The peripheral magnetic circuit assembly includes a plurality of peripheral magnetic elements stacked along the thickness direction of the loudspeaker; two of the plurality of peripheral magnetic elements are a first peripheral magnetic element and a second peripheral magnetic element. The resonant assembly includes a first diaphragm located outside the peripheral magnetic circuit assembly, and a first connecting edge is provided on the inner side of the first diaphragm. The adapter ring has a first surface and a second surface opposite to each other along the thickness direction of the loudspeaker. The first connecting edge is sandwiched between the first surface and the first peripheral magnetic element; the second surface is sealingly connected to the surface of the second peripheral magnetic element facing the first peripheral magnetic element.

[0006] In the embodiments of this application, by setting an adapter ring to clamp the first connecting edge, and by sealing the second surface of the adapter ring and the contact surface of the second peripheral magnetic element with each other, the front cavity and the magnetic gap can be isolated from each other while maintaining the first connecting edge of the first diaphragm reliably fixed. This improves the sealing performance between the joint surface of the second peripheral magnetic element and the first diaphragm and reduces the risk of water or water vapor entering the magnetic gap from the front cavity.

[0007] In one possible implementation, the second surface and the second peripheral magnetic element are sealed together, and the width of the adhesive area is greater than the width of the first connecting edge.

[0008] In this embodiment, the reliable connection between the adapter ring and the second peripheral magnetic element is ensured, and the sealing performance is high.

[0009] In one possible implementation, the adapter ring includes a top ring wall and an outer ring wall, the outer ring wall being bent and connected to the outer edge of the top ring wall; a first surface and a second surface are respectively disposed on both sides of the top ring wall along its thickness direction. The first diaphragm also includes a second connecting edge, a bent portion, and an outer connecting portion, the first connecting edge, the second connecting edge, the bent portion, and the outer connecting portion being connected sequentially from the inside to the outside, the outer connecting portion being used for connecting the outer edge of the first diaphragm; the first connecting edge is bent and connected to the second connecting edge. The first connecting edge is sealed between the top ring wall and the first peripheral magnetic element. The second connecting edge is sealed between the outer ring wall and the outer surface of the first peripheral magnetic element.

[0010] In this embodiment, the top ring wall and the outer ring wall of the adapter ring respectively seal and clamp the first connecting edge and the second connecting edge of the first diaphragm to the first peripheral magnetic element, so that the adapter ring, the first diaphragm and the first peripheral magnetic element are reliably combined, and the joint connection is reliable and the sealing performance is good.

[0011] In one possible implementation, the top surface of the first peripheral magnetic element is stepped, and includes a first stepped surface and a second stepped surface offset along the thickness direction of the speaker. The first stepped surface and the second peripheral magnetic element are sealed together. The second stepped surface and the second peripheral magnetic element are spaced apart, and the first connecting edge and the top ring wall are stacked and sandwiched between the second stepped surface and the second peripheral magnetic element.

[0012] In this embodiment, the bonding area of ​​the second peripheral magnetic element includes: a bonding area between the second peripheral magnetic element and the top ring wall, and a bonding area between the second peripheral magnetic element and the first step surface, such that the width of the bonding area of ​​the second peripheral magnetic element is greater than the width of the first peripheral magnetic element, ensuring the reliability and sealing of the bonding structure. In this structure, the abutment of the first and second peripheral magnetic elements along the thickness direction can also provide mutual support.

[0013] In one possible implementation, the speaker further includes a first adhesive layer. The second surface and the first stepped surface are respectively sealed and bonded to the second peripheral magnetic element by the first adhesive layer.

[0014] In this embodiment, the first adhesive layer can be a continuous adhesive to reliably bond the various structures together and ensure adhesive sealing.

[0015] In one possible implementation, the loudspeaker further includes a second adhesive layer. The second adhesive layer is bonded between the outer ring wall and the second connecting edge, and between the top ring wall and the first connecting edge.

[0016] In this embodiment, the second adhesive layer is L-shaped. The L-shaped sealing adhesive structure can increase the adhesive area and ensure the adhesive seal.

[0017] In one possible implementation, the curved portion includes an upper convex section and a lower concave section; the upper convex section protrudes towards the side closer to the second peripheral magnetic element, and the lower concave section is recessed towards the side closer to the first peripheral magnetic element. The upper convex section is connected to the outer connecting portion, and the lower concave section is connected to the inner side of the upper convex section. The second connecting edge is tangent to the lower concave section and extends towards the side closer to the second peripheral magnetic element.

[0018] In this embodiment, the outer ring wall of the adapter ring can extend downward along the thickness direction without interfering with the curved portion, making full use of the space formed by the concave section.

[0019] In one possible implementation, the adapter ring includes a top ring wall, an inner ring wall, and an outer ring wall. The inner ring wall is bent and connected to the inner edge of the top ring wall, and the outer ring wall is bent and connected to the outer edge of the top ring wall. A first surface and a second surface are respectively disposed on both sides of the top ring wall along its thickness direction. The first diaphragm also includes a second connecting edge, a bent portion, and an outer connecting portion, which are connected sequentially from the inside to the outside. The outer connecting portion is used for connecting the outer edge of the first diaphragm. The first connecting edge is bent and connected to the second connecting edge. The first connecting edge is fixed between the top ring wall and the first peripheral magnetic element, and is located between the inner ring wall and the outer ring wall. The second connecting edge is sandwiched between the outer ring wall and the outer surface of the first peripheral magnetic element. The inner ring wall is located inside the first peripheral magnetic element.

[0020] In this embodiment, the adapter ring has a U-shaped cross-section. The adapter ring can reliably fix the first diaphragm to the first peripheral magnetic element and can increase the bonding width with the second peripheral magnetic element, resulting in better sealing performance.

[0021] In one possible implementation, the adapter ring includes a top ring wall, an inner ring wall, and an outer ring wall. The inner ring wall is bent and connected to the inner edge of the top ring wall, and the outer ring wall is bent and connected to the outer edge of the top ring wall. A first surface and a second surface are respectively disposed on both sides of the top ring wall along its thickness direction. The first diaphragm also includes a second connecting edge, an L-shaped portion, a bent portion, and an outer connecting portion, which are connected sequentially from the inside to the outside. The outer connecting portion is used to connect the outer edge of the first diaphragm. The second connecting edge is connected to the L-shaped portion and forms a U-shape with the L-shaped portion to define a U-shaped groove. The first connecting edge is bent and connected to the end of the second connecting edge away from the L-shaped portion. The first connecting edge is fixed between the top ring wall and the first peripheral magnetic element, and is located between the inner ring wall and the outer ring wall. The outer ring wall is fixed within the U-shaped groove. The inner ring wall is located inside the first peripheral magnetic element.

[0022] In this embodiment, the cross-section of the adapter ring is U-shaped, and the connection between the second connecting part and the L-shaped part is also U-shaped. The adapter ring can reliably fix the first diaphragm to the first peripheral magnetic element, and can increase the bonding width with the second peripheral magnetic element, resulting in better sealing performance.

[0023] In one possible implementation, a notch is provided on one side of the inner edge of the first peripheral magnetic element, and the inner ring wall is accommodated in the notch.

[0024] In this embodiment, the notch accommodates the inner ring wall, which can ensure the bonding width while avoiding the inner ring wall occupying the space of the magnetic gap.

[0025] In one possible implementation, the loudspeaker further includes a third adhesive layer. The third adhesive layer is bonded between the second surface and the second peripheral magnetic element.

[0026] In this embodiment, the third adhesive layer can reliably bond the second surface and the second peripheral magnetic element, ensuring the sealing performance between them.

[0027] In one possible implementation, the loudspeaker further includes a fourth adhesive layer. The fourth adhesive layer is bonded between the outer ring wall and the second connecting edge, between the top ring wall and the first connecting edge, and between the inner ring wall and the first peripheral magnetic element.

[0028] In this embodiment, the fourth adhesive layer is U-shaped, has a large adhesive area, and features two bends instead of a straight adhesive seam, resulting in better sealing and water or moisture barrier effects. Furthermore, the fourth adhesive layer reliably bonds the adapter ring, the first diaphragm, and the first peripheral magnetic element together, ensuring structural strength.

[0029] In one possible implementation, the speaker further includes a fifth adhesive layer. The fifth adhesive layer is bonded between the second connecting edge and the outer surface of the first peripheral magnetic element, between the first connecting edge and the first peripheral magnetic element, and between the inner ring wall and the first peripheral magnetic element.

[0030] In this embodiment, the fifth adhesive layer is U-shaped, has a large adhesive area, and features two bends instead of a straight adhesive seam, resulting in better sealing and water or moisture barrier effects. Furthermore, the fifth adhesive layer reliably bonds the adapter ring, the first diaphragm, and the first peripheral magnetic element together, ensuring structural strength.

[0031] In one possible implementation, the plurality of peripheral magnetic elements includes a lower outer magnet, a lower outer magnetic conductor, an upper outer magnetic conductor, and an upper outer magnet stacked sequentially. The upper outer magnetic conductor serves as a first peripheral magnetic element, and the upper outer magnet serves as a second peripheral magnetic element; or, the lower outer magnetic conductor serves as the first peripheral magnetic element, and the upper outer magnetic conductor serves as the second peripheral magnetic element.

[0032] In this embodiment, the first diaphragm can be clamped between different peripheral magnetic elements as needed, increasing design freedom.

[0033] In one possible implementation, the loudspeaker further includes a housing. A magnetic circuit assembly and a resonant assembly are respectively connected to the housing, and the housing, magnetic circuit assembly, and resonant assembly form a front cavity and a rear cavity. The contact surfaces of the second surface and the second peripheral magnetic element are sealed to isolate the front cavity and the magnetic gap from each other.

[0034] In this embodiment, water or water vapor entering the front cavity is less likely to enter the magnetic gap, thus avoiding corrosion or failure of internal components such as the voice coil.

[0035] In one possible implementation, the vibrating assembly further includes a second diaphragm, a dome, and a voice coil; the second diaphragm is spaced around the outer periphery of the first diaphragm, and the dome is connected between the first and second diaphragms; the voice coil is disposed in the magnetic gap. The loudspeaker also includes a housing, to which the outer edge of the second diaphragm is fixed.

[0036] In this embodiment, the second diaphragm can be reliably fixed to the housing, ensuring reliable installation of the second diaphragm and improving the sealing performance of the rear cavity.

[0037] Secondly, embodiments of this application provide an electronic device including a housing and the aforementioned speaker. The speaker is disposed within the housing.

[0038] The electronic device in this embodiment uses a speaker with good sealing performance and a long service life. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a perspective view of a loudspeaker according to one embodiment of this application.

[0041] Figure 2 for Figure 1 A cross-sectional view of the speaker along line AA.

[0042] Figure 3 for Figure 2 Enlarged view of point B on the speaker.

[0043] Figure 4 for Figure 3 Enlarged view of part of the structure.

[0044] Figure 5 for Figure 4 A schematic diagram of another embodiment.

[0045] Figure 6 for Figure 1 An exploded view of the speaker.

[0046] Figure 7 for Figure 2 A schematic diagram of another embodiment of the speaker.

[0047] Figure 8 for Figure 1 A top view of part of the speaker's structure.

[0048] Figure 9 for Figure 2 A schematic diagram of the speaker assembly process.

[0049] Figure 10 This is a cross-sectional view of a speaker according to another embodiment of this application.

[0050] Figure 11 for Figure 10 A magnified view of point C on the speaker.

[0051] Figure 12 for Figure 11 Enlarged view of part of the structure.

[0052] Figure 13 for Figure 10 A schematic diagram of the speaker assembly process.

[0053] Figure 14 This is a cross-sectional view of a speaker according to another embodiment of this application.

[0054] Figure 15 for Figure 14 Enlarged view of point D of the speaker.

[0055] Figure 16 for Figure 15 Enlarged view of part of the structure.

[0056] Figure 17 for Figure 14 A schematic diagram of the speaker assembly process.

[0057] Figure 18 This is a perspective view of an electronic device according to an embodiment of this application.

[0058] Figure 19 for Figure 18 A cross-sectional view of the electronic device along line EE.

[0059] Key component symbols: 100, 100A, 100B - Speaker; 10 - Housing; 11 - Retaining ring; 12 - Upper housing; 13 - Compression ring; 20 - Magnetic circuit assembly; 30 - Peripheral magnetic circuit assembly; 30a - Peripheral magnetic element; 30b - First peripheral magnetic element; 30c - Second peripheral magnetic element; 31 - Lower outer magnet; 32 - Lower outer magnetic conductor; 33 - Upper outer magnetic conductor; 34 - Upper outer magnet; 40 - Middle Intermediate magnetic circuit assembly; 41-Lower intermediate magnet; 42-Lower intermediate magnetic conductor; 43-Middle intermediate magnet; 44-Upper intermediate magnetic conductor; 45-Upper intermediate magnet; 51-Lower yoke; 52-Upper yoke; 60-Vibration assembly; 61, 61B-First diaphragm; 611-First connecting edge; 612-Second connecting edge; 613-Bend; 613a-Upper convex section; 613b-Lower concave section; 614-Outer connecting section; 615 - L-shaped portion; 62- Second diaphragm; 621- Folded edge; 622- Wrapper portion; 623- Inner connecting portion; 63- Dome; 64- Voice coil; 70, 70A- Adapter ring; 71- Top ring wall; 72- Outer ring wall; 73- Inner ring wall; 81- First adhesive layer; 811, 831- Lower extension portion; 82- Second adhesive layer; 83- Third adhesive layer; 84- Fourth adhesive layer; 85- Fifth adhesive layer; 90- Skeleton structure; 91-Connecting frame; 110-Lower component; 120-Middle component; 130-Upper component; P1-First surface; P2-Second surface; P3-First stepped surface; P4-Second stepped surface; P5-Outer surface; Q1-Front cavity; Q2-Rear cavity; Z-Thickness direction; f1-Magnetic gap; C1-Slot notch; C2-U-shaped slot; C3-Allowing space; 1000-Electronic device; 200-Housing; K1-Sound outlet. Detailed Implementation

[0060] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0061] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0064] See Figure 1 and Figure 2 This embodiment provides a loudspeaker 100, which is a transducer that converts electrical signals into sound signals and can be used as a sound-generating device for electronic devices such as mobile phones, tablets, and speakers.

[0065] Figure 1 This is a perspective view of the speaker 100 in this embodiment. Figure 2 for Figure 1 A cross-sectional view of the loudspeaker 100 along line AA.

[0066] See Figure 1 and Figure 2 The loudspeaker 100 includes a housing 10, a magnetic circuit assembly 20, and a vibration assembly 60. The magnetic circuit assembly 20 and the vibration assembly 60 are respectively connected to the housing 10. The housing 10, the magnetic circuit assembly 20, and the vibration assembly 60 form a front cavity Q1 and a rear cavity Q2. The rear cavity Q2 is generally a closed cavity. The front cavity Q1 and the rear cavity Q2 are separated by the vibration assembly 60, and the front cavity Q1 is used to connect to the outside of the loudspeaker 100 to emit sound outwards. For example, when the loudspeaker 100 is installed in an electronic device such as a mobile phone, the front cavity Q1 connects to a sound outlet on the casing of the electronic device to emit sound outwards from the sound outlet. It should be noted that the front cavity Q1 of the loudspeaker 100 can be entirely enclosed by the structure of the loudspeaker 100 itself, or it can be enclosed by the loudspeaker 100 and other structures of the electronic device (such as the mid-frame).

[0067] In this embodiment, the housing 10 of the speaker 100 serves as the mounting base for the magnetic circuit assembly 20 and the vibration assembly 60, and its structure can be configured as needed.

[0068] The magnetic circuit assembly 20 is used to generate a magnetic field, specifically a permanent magnetic field. The magnetic circuit assembly 20 may include a peripheral magnetic circuit assembly 30 and an intermediate magnetic circuit assembly 40. The intermediate magnetic circuit assembly 40 and the peripheral magnetic circuit assembly 30 are spaced apart to define a magnetic gap f1. The peripheral magnetic circuit assembly 30 may surround the outer periphery of the intermediate magnetic circuit assembly 40 circumferentially, such that the magnetic gap f1 is annular and extends along the thickness direction Z of the loudspeaker 100.

[0069] The vibrating assembly 60 includes a first diaphragm 61, a second diaphragm 62, a dome 63, and a voice coil 64. The second diaphragm 62 is spaced around the outer periphery of the first diaphragm 61, and the dome 63 connects the first diaphragm 61 and the second diaphragm 62. The voice coil 64 is movably disposed in the magnetic gap f1 along the thickness direction Z of the loudspeaker 100. The voice coil 64 may include a conductive coil, which can generate a changing magnetic field under the control of the sound input signal, so that it can vibrate in the magnetic gap f1 along the thickness direction Z of the loudspeaker 100 under the action of the magnetic field generated by the magnetic circuit assembly 20, and then drive the second diaphragm 62 and the first diaphragm 61 to vibrate through the dome 63, thereby emitting sound.

[0070] When the speaker 100 is a miniature speaker used in small electronic devices (such as mobile phones, tablets, etc.), the amplitude of the speaker 100 needs to be set to be relatively large (e.g., greater than 0.75mm) in order to ensure greater external loudness. In this case, in order to improve the nonlinear distortion problem and improve the external sound quality, the vibration component 60 of this embodiment adopts a multi-diaphragm system including a first diaphragm 61 and a second diaphragm 62 arranged inside and outside, and adopts a multi-magnetic circuit system framework including a peripheral magnetic circuit component 30 and an intermediate magnetic circuit component 40. In this embodiment, the peripheral magnetic circuit component 30 includes a plurality of peripheral magnetic elements 30a stacked along the thickness direction Z of the speaker 100, and the plurality of peripheral magnetic elements 30a are distributed on both sides of the first diaphragm 61. For example, the plurality of peripheral magnetic elements 30a of the peripheral magnetic circuit component 30 include a lower outer magnet 31, a lower outer magnetic guide 32, an upper outer magnetic guide 33, and an upper outer magnet 34 stacked in sequence. The magnet mentioned in this embodiment can be a permanent magnet, and the magnetic guide (such as the lower outer magnetic guide 32) can also be called a washer. "Up" and "down" are only relative positions along the thickness direction Z of the speaker 100 and are not intended as limitations. The side closer to the front cavity Q1 is up, and the side closer to the rear cavity Q2 is down.

[0071] To secure the first diaphragm and the peripheral magnetic circuit assembly, some known technologies involve directly clamping the inner edge (first connecting edge) of the first diaphragm between two adjacent peripheral magnetic elements. This results in a narrow connection width between the first diaphragm and the peripheral magnetic elements, leading to poor waterproofing of the front cavity. Furthermore, when the diaphragm (such as the first diaphragm) is made of a highly flexible non-metallic material like silicone rubber, its connection to the peripheral magnetic elements (e.g., adhesive bonding) can easily cause cracking at the connection point due to the different elastic deformation properties of the first diaphragm and the peripheral magnetic elements under impact. This allows water or moisture from the front cavity to enter the magnetic gap, causing problems such as noise in the speaker, corrosion of the voice coil and magnetic circuit assembly, leading to speaker malfunction or reduced performance and lifespan.

[0072] This embodiment provides some solutions to the above problems, which will be illustrated below.

[0073] See also Figure 3 and Figure 4 Two of the multiple peripheral magnetic elements 30a are the first peripheral magnetic element 30b and the second peripheral magnetic element 30c. For example, in this embodiment, the upper outer magnetic conductor 33 serves as the first peripheral magnetic element 30b, and the upper outer magnet 34 serves as the second peripheral magnetic element 30c.

[0074] In other embodiments, the lower outer magnetic conductor 32 may serve as the first peripheral magnetic element 30b, and the upper outer magnetic conductor 33 may serve as the second peripheral magnetic element 30c.

[0075] In this embodiment, the first diaphragm 61 is located on the outside of the peripheral magnetic circuit assembly 30, and the inner side of the first diaphragm 61 (i.e. the side closer to the peripheral magnetic circuit assembly 30) is provided with a first connecting edge 611.

[0076] The loudspeaker 100 in this embodiment also includes an adapter ring 70. The adapter ring 70 has a first surface P1 and a second surface P2 that are opposite to each other along the thickness direction Z of the loudspeaker 100. A first connecting edge 611 is sandwiched between the first surface P1 and the first peripheral magnetic element 30b. The second surface P2 is sealed to the surface of the second peripheral magnetic element 30c facing the first peripheral magnetic element 30b. Thus, by providing the adapter ring 70 to clamp the first connecting edge 611, and by sealing the contact surfaces of the second surface P2 of the adapter ring 70 and the second peripheral magnetic element 30c with each other, the front cavity Q1 and the magnetic gap f1 can be isolated from each other while maintaining reliable fixation of the first connecting edge 611 of the first diaphragm 61. This improves the sealing performance between the mating surfaces of the second peripheral magnetic element 30c and the first diaphragm 61, and reduces the risk of water or moisture entering the magnetic gap f1 from the front cavity Q1.

[0077] The adapter ring 70 can be made of a material with elastic deformation properties similar to those of the peripheral magnetic element 30a, such as SPCC metal (cold-rolled carbon steel) or magnesium-aluminum alloy. This ensures that the surface of the second peripheral magnetic element 30c near the front cavity Q1 is less prone to cracking due to excessively different elastic deformation after bonding. Optionally, the SPCC metal used in the adapter ring 70 may have a plating layer on its surface. In other embodiments, the adapter ring 70 can also be made of a plastic with high structural strength.

[0078] In this embodiment, the second surface P2 and the second peripheral magnetic element 30c are sealed and bonded together, and the width d1 of the bonding area is greater than the width d2 of the first connecting edge 611. The bonding area referred to here is the area where the two are connected by adhesive. Width refers to the dimension in the inward and outward directions; for a ring structure, the width is specifically the distance between the inner and outer edges of the ring.

[0079] Based on the aforementioned multi-diaphragm system and multi-magnetic circuit system architecture, to ensure that the loudspeaker 100 has a sufficiently wide magnetic gap f1 and a large effective radiation area (S D The outer periphery of the upper outer magnetic conductor 33 and the lower outer magnetic conductor 32 of the first peripheral magnetic element 30b are recessed to form a clearance space C3, which is used to avoid the vibration of the first diaphragm 61 along the thickness direction Z of the speaker 100. The recess referred to here means that it is recessed from the outermost outer surface P5 of the lower outer magnetic conductor 32.

[0080] The arrangement of the clearance space C3 reduces the width of the top surface of the upper outer magnetic conductor 33. Furthermore, if a known technique is used to directly sandwich the first connecting edge of the first diaphragm between the upper outer magnetic conductor (first peripheral magnetic element) and the upper outer magnet (second peripheral magnetic element), the adhesive width of the first connecting edge will be very small, thereby reducing the connection strength and sealing performance between the first diaphragm and the peripheral magnetic circuit assembly, and decreasing the reliability of the speaker.

[0081] In this embodiment, by reducing the width of the top surface of the upper outer magnetic conductor 33 through the clearance space C3, the first connecting edge 611 is fixed to the narrower first peripheral magnetic element 30b via the adapter ring 70, and then fixedly connected to the second peripheral magnetic element 30c via the wider adapter ring 70. This increases the connection width and improves connection reliability and sealing performance. Furthermore, the adapter ring 70 can be adaptively adjusted according to the shape and size of the first peripheral magnetic element 30b and the second peripheral magnetic element 30c, improving the adaptability of the structure.

[0082] See you again Figure 3 and Figure 4 In this embodiment, the adapter ring 70 includes a top ring wall 71 and an outer ring wall 72. The outer ring wall 72 is bent and connected to the outer edge of the top ring wall 71, thus the adapter ring 70 has an L-shaped annular structure. The aforementioned first surface P1 and second surface P2 are the two side surfaces of the top ring wall 71 along the thickness direction Z, respectively.

[0083] The first diaphragm 61 also includes a second connecting edge 612, a bent portion 613, and an outer connecting portion 614. The first connecting edge 611, the second connecting edge 612, the bent portion 613, and the outer connecting portion 614 are connected sequentially from the inside to the outside. The outer connecting portion 614 is used to connect the outer edge of the first diaphragm 61, specifically to the dome 63. The first connecting edge 611 is bent and connected to the second connecting edge 612, so that the connection between the first connecting edge 611 and the second connecting edge 612 forms an L-shape.

[0084] The first connecting edge 611 is sealed between the top ring wall 71 and the first peripheral magnetic element 30b, that is, one side of the first connecting edge 611 is sealed to the top ring wall 71, and the other side is sealed to the first peripheral magnetic element 30b. The sealing method can be adhesive bonding. Optionally, the sealing between the first connecting edge 611 and the top ring wall 71 can also be achieved by molding the adapter ring 70 and the first diaphragm 61 into one piece through a secondary molding process.

[0085] The second connecting edge 612 is sealed between the outer ring wall 72 and the outer surface of the first peripheral magnetic element 30b. Optionally, the second connecting edge 612 and the outer ring wall 72 are bonded together or integrally formed. In this way, the first diaphragm 61 and the adapter ring 70 are reliably connected, and the sealing at the joint surface between them is ensured.

[0086] In this embodiment, optionally, the top surface of the first peripheral magnetic element 30b is stepped, and includes a first stepped surface P3 and a second stepped surface P4 offset along the thickness direction Z of the speaker 100. The first stepped surface P3 and the second peripheral magnetic element 30c are sealed together (e.g., bonded). The second stepped surface P4 and the second peripheral magnetic element 30c are spaced apart, and the first connecting edge 611 and the top ring wall 71 are stacked and sandwiched between the second stepped surface P4 and the second peripheral magnetic element 30c. Thus, the bonding area of ​​the second peripheral magnetic element 30c includes the bonding area between the second peripheral magnetic element 30c and the top ring wall 71 and the bonding area between the second peripheral magnetic element 30c and the first stepped surface P3, such that the width of the bonding area of ​​the second peripheral magnetic element 30c is greater than the width of the first peripheral magnetic element 30b, ensuring the reliability and sealing of the joint structure. In this structure, the first peripheral magnetic element 30b and the second peripheral magnetic element 30c abutting along the thickness direction Z can also serve as mutual support.

[0087] In this embodiment, optionally, the speaker 100 further includes a first adhesive layer 81. The second surface P2 and the first stepped surface P3 are respectively sealed and bonded to the second peripheral magnetic element 30c by the first adhesive layer 81. The first adhesive layer 81 can be a continuous adhesive to reliably bond the various structures together and ensure adhesive sealing. Optionally, the two ends of the width direction of the first adhesive layer 81 may include lower extensions 811, and the lower extensions 811 on both sides are respectively bonded to the outer side of the adapter ring 70 and the inner side of the first peripheral magnetic element 30b to further improve the bonding reliability and increase the bonding area and sealing effect.

[0088] In this embodiment, optionally, the speaker 100 further includes a second adhesive layer 82. The second adhesive layer 82 is adhered between the outer ring wall 72 and the second connecting edge 612, and between the top ring wall 71 and the first connecting edge 611. The second adhesive layer 82 is a continuous L-shape, and the L-shaped sealing adhesive structure can increase the adhesive area and ensure adhesive sealing. Optionally, the inner surfaces of both the top ring wall 71 and the first connecting edge 611 can also be adhered to the first peripheral magnetic element 30b by the second adhesive layer 82.

[0089] See also Figure 3 and Figure 4 In this embodiment, the curved portion 613 of the first diaphragm 61 includes an upper convex section 613a and a lower concave section 613b. The upper convex section 613a protrudes towards the side near the second peripheral magnetic element 30c, and the lower concave section 613b is recessed towards the side near the first peripheral magnetic element 30b. The lower concave section 613b is connected to the inner side of the upper convex section 613a, making the shape of the curved portion 613 approximately a sine curve. The upper convex section 613a is connected to the outer connecting portion 614, and the second connecting edge 612 is tangent to the lower concave section 613b and extends towards the side near the second peripheral magnetic element 30c. The aforementioned clearance space C3 accommodates a portion of the first diaphragm 61 (the portion of the lower concave section 613b), which can increase the width dimension of the first diaphragm 61 and increase the effective radiation area of ​​the first diaphragm 61. Furthermore, the outer ring wall 72 of the adapter ring 70 can extend downward along the thickness direction Z without interfering with the curved portion 613, making full use of the space formed by the concavity of the lower concave section 613b.

[0090] See Figure 5 In another embodiment, the top surface of the first peripheral magnetic element 30b may not be stepped, but rather remain flat. In this case, the first connecting edge 611 is sandwiched between the top surface of the first peripheral magnetic element 30b and the top ring wall 71, and is bonded to the top ring wall 71 by the second adhesive layer 82. Of course, the lower surface of the first connecting edge 611 can be connected and fixed to the top surface of the first peripheral magnetic element 30b by adhesive or other means.

[0091] See Figure 6 and combined Figure 1 The intermediate magnetic circuit assembly 40 may include a lower intermediate magnet 41, a lower intermediate magnetic conductor 42, a middle intermediate magnet 43, an upper intermediate magnetic conductor 44, and an upper intermediate magnet 45 stacked in sequence.

[0092] The magnetic circuit assembly 20 also includes a lower yoke 51 and an upper yoke 52. Lower outer magnets 31 and lower intermediate magnets 41 are stacked on the lower yoke 51 with an inner and outer gap. Upper intermediate magnets 45 and upper outer magnets 34 are stacked on the upper yoke 52 with an inner and outer gap. The magnetic pole arrangement of the magnetic circuit assembly 20 can be found in [reference needed]. Figure 7 .

[0093] See you again Figure 7 In this embodiment, the housing 10 of the loudspeaker 100 includes a fixing ring 11, which may be made of steel. The fixing ring 11 can be spaced around the peripheral magnetic circuit assembly 30, and the bottom of the fixing ring 11 is fixedly connected to the lower magnetic yoke 51. The outer edge of the second diaphragm 62 is fixed to the fixing ring 11 of the housing 10, and the inner edge of the first diaphragm 61 is fixed to the peripheral magnetic circuit assembly 30, so that the lower magnetic yoke 51, the fixing ring 11, the peripheral magnetic circuit assembly 30, the first diaphragm 61, the dome 63, and the second diaphragm 62 form the rear cavity Q2 of the loudspeaker 100.

[0094] Optionally, the second diaphragm 62 includes a folded edge 621, a folded ring portion 622, and an inner connecting portion 623 connected sequentially from the outside to the inside. The folded edge 621 is located at the outer edge of the second diaphragm 62, and the folded edge 621 is fixedly pressed against the top of the fixing ring 11 by a clamping ring 13.

[0095] The housing 10 of the loudspeaker 100 may also include an upper housing 12, which, along with the upper magnetic yoke 52, a clamping ring 13, a peripheral magnetic circuit assembly 30, a first diaphragm 61, a dome 63, and a second diaphragm 62, forms a front cavity Q1. The upper housing 12 has an opening for the front cavity Q1 to emit sound outwards.

[0096] In other embodiments, the upper shell 12 may be omitted, and a corresponding structure may be provided on the electronic device to form the front cavity Q1 together with the speaker 100.

[0097] See also Figure 8 In this embodiment, the voice coil 64 can be connected to the fixed ring 11 via the skeleton structure 90. For example, both the fixed ring 11 and the voice coil 64 are rectangular structures. The skeleton structure 90 includes four connecting skeletons 91, which are connected between the four corners of the fixed ring 11 and the four corners of the voice coil 64. The voice coil 64 is suspended within the magnetic gap f1 between the upper yoke 52 and the lower yoke 51, supported by the skeleton structure 90 (see...). Figure 7 The dome 63 is fixedly connected to the middle position of the connecting frame 91 along its length (see...). Figure 7 The connecting frame 91 has a certain elastic deformation capability, so that the voice coil 64 can vibrate in the magnetic gap f1 along the thickness direction Z of the speaker 100, thereby driving the dome 63 to vibrate through the connecting frame 91, and thus causing the first diaphragm 61 and the second diaphragm 62 to vibrate and produce sound.

[0098] In this embodiment, the lower outer magnet 31 and the lower outer magnetic conductor 32 are disconnected at each connecting frame 91 to avoid hindering the vibration of the connecting frame 91. Thus, both the lower outer magnet 31 and the lower outer magnetic conductor 32 consist of four disconnected parts.

[0099] See Figure 9The speaker 100 in this embodiment can be assembled using the following steps:

[0100] The lower component 110 is formed by assembling the housing 10, lower yoke 51, skeleton structure 90, voice coil 64, lower outer magnet 31, lower outer magnetic conductor 32, upper outer magnetic conductor 33, lower middle magnet 41, lower middle magnetic conductor 42 and middle middle magnet 43 together.

[0101] After assembling or integrally molding the first diaphragm 61, the dome 63, and the second diaphragm 62, first insert and connect (e.g., adhesive connection) the first peripheral magnetic element 30b below the first diaphragm 61, and then insert and connect (e.g., adhesive connection) the adapter ring 70 above the first diaphragm 61 and the first peripheral magnetic element 30b, thus forming an intermediate component 120.

[0102] The upper magnetic yoke 52, the upper outer magnet 34, the upper middle magnet 45 and the upper middle magnetic conductor 44 are assembled into the upper component 130;

[0103] The aforementioned intermediate component 120 is assembled downwards onto the lower component 110 to form the core semi-finished product of the speaker 100;

[0104] The upper component 130 is assembled with the core semi-finished product to form the speaker 100.

[0105] Figures 10-13 Another speaker 100A is shown. This speaker 100A is... Figure 2 The main difference with the speaker 100 is that it uses a different adapter ring 70A.

[0106] See Figures 10-12 The adapter ring 70A includes a top ring wall 71, an inner ring wall 73, and an outer ring wall 72. The inner ring wall 73 is bent and connected to the inner edge of the top ring wall 71, and the outer ring wall 72 is bent and connected to the outer edge of the top ring wall 71. Thus, the cross-section of the adapter ring 70A is U-shaped.

[0107] The first diaphragm 61 of the speaker 100A can be connected to... Figure 2 The first diaphragm 61 in the middle is the same, so it will not be described in detail here.

[0108] Based on the U-shaped adapter ring 70A, in this embodiment, the first connecting edge 611 is fixed between the top ring wall 71 and the first peripheral magnetic element 30b, and is located between the inner ring wall 73 and the outer ring wall 72. The second connecting edge 612 is sandwiched between the outer ring wall 72 and the outer surface of the first peripheral magnetic element 30b. The inner ring wall 73 is located inside the first peripheral magnetic element 30b.

[0109] The width of the second surface P2 of the adapter ring 70A can be set to be equal to or slightly smaller than the width of the second peripheral magnetic element 30c to ensure that the mating surfaces of the two have sufficient width, improving the sealing performance and structural reliability. Optionally, the speaker 100A also includes a third adhesive layer 83. The third adhesive layer 83 is bonded between the second surface P2 of the adapter ring 70A and the second peripheral magnetic element 30c. Optionally, the width of the third adhesive layer 83 can be equal to the width of the second surface P2. Optionally, the width of the third adhesive layer 83 can also be slightly larger than the width of the second surface P2. In this case, the two ends of the width direction of the third adhesive layer 83 can include lower extensions 831, and the lower extensions 831 on both sides are bonded to the outer and inner surfaces of the adapter ring 70A, respectively, to further improve the bonding reliability and increase the bonding area and sealing effect.

[0110] Optionally, a notch C1 is formed on one side of the inner edge of the first peripheral magnetic element 30b, and the inner ring wall 73 is accommodated in the notch C1. In this way, the inner ring wall 73 can avoid occupying the space of the magnetic gap f1.

[0111] See also Figure 12 Optionally, the loudspeaker 100A also includes a fourth adhesive layer 84. The fourth adhesive layer 84 is bonded between the outer ring wall 72 and the second connecting edge 612, between the top ring wall 71 and the first connecting edge 611, and between the inner ring wall 73 and the first peripheral magnetic element 30b. The fourth adhesive layer 84 is in a continuous U-shape, which ensures the reliability and sealing of the connection and effectively prevents water or moisture from entering the magnetic gap f1.

[0112] See Figure 13 The assembly sequence of the speaker 100A in this embodiment is the same as that described above. Figure 9 The process is consistent, involving first assembling the lower component 110, the middle component 120, and the upper component 130 separately, and then assembling them sequentially. The specific details will not be elaborated further.

[0113] Figures 14-17 Another type of speaker 100B is shown. This speaker 100B is similar to... Figure 10 The main difference of the speaker 100 is that it uses a different first diaphragm 61B.

[0114] See Figures 14-16The first diaphragm 61B includes a first connecting edge 611, a second connecting edge 612, an L-shaped portion 615, a bent portion 613, and an outer connecting portion 614. The L-shaped portion 615, the bent portion 613, and the outer connecting portion 614 are connected sequentially from the inside to the outside. The outer connecting portion 614 is used to connect the outer edge of the first diaphragm 61B, specifically it can be connected to the dome 63. The second connecting edge 612 is connected to the L-shaped portion 615 and is connected to the L-shaped portion 615 in a U-shape to define the U-shaped groove C2. The first connecting edge 611 is bent and connected to the end of the second connecting edge 612 away from the L-shaped portion 615.

[0115] Based on the first diaphragm 61B, the connection method is as follows: the first connecting edge 611 is fixed between the top ring wall 71 and the first peripheral magnetic element 30b, and is located between the inner ring wall 73 and the outer ring wall 72. The outer ring wall 72 is fixed in the U-shaped groove C2, and the inner ring wall 73 is located inside the first peripheral magnetic element 30b. In this structure, the first diaphragm 61B can be more reliably fixed to the first peripheral magnetic element 30b by the adapter ring 70.

[0116] Optionally, a notch C1 is formed on one side of the inner edge of the first peripheral magnetic element 30b, and the inner ring wall 73 is accommodated within the notch C1. In this way, while ensuring the bonding widths d1 and d2, the space occupied by the inner ring wall 73 in the magnetic gap f1 is avoided.

[0117] In the speaker 100B, the second surface P2 and the second peripheral magnetic element 30c can be connected... Figure 10 The same third adhesive layer 83 is used for bonding, which will not be described in detail here.

[0118] See also Figure 16 The speaker 100B also includes a fifth adhesive layer 85. The fifth adhesive layer 85 is bonded between the second connecting edge 612 and the outer surface of the first peripheral magnetic element 30b, as well as between the first connecting edge 611 and the first peripheral magnetic element 30b, and between the inner ring wall 73 and the first peripheral magnetic element 30b. This ensures that the adapter ring 70, the first diaphragm 61B, and the first peripheral magnetic element 30b are reliably fixed together, and that the mating surfaces remain reliably sealed.

[0119] In this embodiment, the materials of each adhesive layer (such as the first adhesive layer 81, the second adhesive layer 82, the third adhesive layer 83, the fourth adhesive layer 84, and the fifth adhesive layer 85) can be adhesives (such as UV-curable adhesives), gels, silicone greases, etc., and are not limited here.

[0120] See Figure 17 The assembly sequence of the speaker 100B in this embodiment is the same as that described above. Figure 9The process is consistent: first, the lower component 110, the middle component 120, and the upper component 130 are assembled separately, and then the speaker 100B is assembled in sequence. The specific details will not be elaborated further.

[0121] Figure 18 and Figure 19 An electronic device 1000 is shown. The electronic device 1000 can be a mobile phone, tablet computer, laptop computer, desktop computer or other electronic device 1000 with sound output function.

[0122] The electronic device 1000 includes a housing 200 and one or more speakers 100. The speakers 100 are disposed inside the housing 200. A sound hole K1 may be provided on the housing 200.

[0123] When the speaker 100 is installed inside the housing 200, the front cavity Q1 of the speaker 100 can be connected to the sound outlet K1. In this way, the speaker 100 can emit sound through the sound outlet K1.

[0124] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A loudspeaker, characterized by include: A magnetic circuit assembly, comprising an intermediate magnetic circuit assembly and a peripheral magnetic circuit assembly, wherein the intermediate magnetic circuit assembly and the peripheral magnetic circuit assembly are spaced apart to define a magnetic gap; the peripheral magnetic circuit assembly comprises a plurality of peripheral magnetic elements stacked along the thickness direction of the loudspeaker; two of the plurality of peripheral magnetic elements are a first peripheral magnetic element and a second peripheral magnetic element. A vibration assembly, the vibration assembly including a first diaphragm located outside the peripheral magnetic circuit assembly, the first diaphragm having a first connecting edge on its inner side; and, An adapter ring having a first surface and a second surface opposite to each other along the thickness direction of the speaker; The first connecting edge is sandwiched between the first surface and the first peripheral magnetic element; the second surface is sealed to the surface of the second peripheral magnetic element facing the first peripheral magnetic element.

2. The loudspeaker according to claim 1, characterized in that: The second surface and the second peripheral magnetic element are sealed and bonded together, and the width of the bonded area is greater than the width of the first connecting edge.

3. The loudspeaker according to claim 1, characterized in that: The adapter ring includes a top ring wall and an outer ring wall, the outer ring wall being bent and connected to the outer edge of the top ring wall; the first surface and the second surface are respectively provided on both sides of the top ring wall along the thickness direction; The first diaphragm further includes a second connecting edge, a bent portion, and an outer connecting portion. The first connecting edge, the second connecting edge, the bent portion, and the outer connecting portion are connected sequentially from the inside to the outside. The outer connecting portion is used to connect the outer edge of the first diaphragm. The first connecting edge is bent and connected to the second connecting edge. The first connecting edge is sealed between the top ring wall and the first peripheral magnetic element; The second connecting edge is sealed between the outer ring wall and the outer side of the first peripheral magnetic element.

4. The loudspeaker according to claim 3, characterized in that: The top surface of the first peripheral magnetic element is stepped, and includes a first stepped surface and a second stepped surface that are offset along the thickness direction of the speaker; The first stepped surface and the second peripheral magnetic element are sealed together. The second step surface and the second peripheral magnetic element are spaced apart, and the first connecting edge and the top ring wall are stacked and sandwiched between the second step surface and the second peripheral magnetic element.

5. The loudspeaker according to claim 4, characterized in that: The speaker also includes a first adhesive layer; The second surface and the first stepped surface are respectively sealed and bonded to the second peripheral magnetic element by the first adhesive layer.

6. The loudspeaker according to claim 4, characterized in that: The speaker also includes a second adhesive layer; The second adhesive layer is bonded between the outer ring wall and the second connecting edge, and between the top ring wall and the first connecting edge.

7. The loudspeaker according to claim 3, characterized in that: The curved portion includes an upper convex section and a lower concave section; the upper convex section protrudes towards the side closer to the second peripheral magnetic element, and the lower concave section is recessed towards the side closer to the first peripheral magnetic element. The upper convex section is connected to the outer connecting part, and the lower concave section is connected to the inner side of the upper convex section; The second connecting edge is tangent to the recessed section and extends toward the side closer to the second peripheral magnetic element.

8. The loudspeaker according to claim 1, characterized in that: The adapter ring includes a top ring wall, an inner ring wall, and an outer ring wall. The inner ring wall is bent and connected to the inner edge of the top ring wall, and the outer ring wall is bent and connected to the outer edge of the top ring wall. The first surface and the second surface are respectively provided on both sides of the top ring wall along the thickness direction. The first diaphragm further includes a second connecting edge, a bent portion, and an outer connecting portion. The first connecting edge, the second connecting edge, the bent portion, and the outer connecting portion are connected sequentially from the inside to the outside. The outer connecting portion is used to connect the outer edge of the first diaphragm. The first connecting edge is bent and connected to the second connecting edge. The first connecting edge is fixed between the top ring wall and the first peripheral magnetic element, and is located between the inner ring wall and the outer ring wall; The second connecting edge is sandwiched between the outer ring wall and the outer surface of the first peripheral magnetic element; The inner ring wall is located inside the first peripheral magnetic element.

9. The loudspeaker according to claim 1, characterized in that: The adapter ring includes a top ring wall, an inner ring wall, and an outer ring wall. The inner ring wall is bent and connected to the inner edge of the top ring wall, and the outer ring wall is bent and connected to the outer edge of the top ring wall. The first surface and the second surface are respectively provided on both sides of the top ring wall along the thickness direction. The first diaphragm further includes a second connecting edge, an L-shaped portion, a curved portion, and an outer connecting portion. The L-shaped portion, the curved portion, and the outer connecting portion are connected sequentially from the inside to the outside. The outer connecting portion is used to connect the outer edge of the first diaphragm. The second connecting edge is connected to the L-shaped portion and forms a U-shape with the L-shaped portion to define a U-shaped groove. The first connecting edge is bent and connected to the end of the second connecting edge away from the L-shaped portion. The first connecting edge is fixed between the top ring wall and the first peripheral magnetic element, and is located between the inner ring wall and the outer ring wall; The outer ring wall is fixed inside the U-shaped groove; The inner ring wall is located inside the first peripheral magnetic element.

10. The loudspeaker according to claim 8 or 9, characterized in that: A notch is provided on one side of the inner edge of the first peripheral magnetic element, and the inner ring wall is accommodated in the notch.

11. The loudspeaker according to claim 8 or 9, characterized in that: The speaker also includes a third adhesive layer; The third adhesive layer is bonded between the second surface and the second peripheral magnetic element.

12. The loudspeaker according to claim 8, characterized in that: The speaker also includes a fourth adhesive layer; The fourth adhesive layer is bonded between the outer ring wall and the second connecting edge, between the top ring wall and the first connecting edge, and between the inner ring wall and the first peripheral magnetic element.

13. The loudspeaker according to claim 9, characterized in that: The speaker also includes a fifth adhesive layer; The fifth adhesive layer is bonded between the second connecting edge and the outer surface of the first peripheral magnetic element, between the first connecting edge and the first peripheral magnetic element, and between the inner ring wall and the first peripheral magnetic element.

14. The loudspeaker according to claim 1, characterized in that: The plurality of said peripheral magnetic elements include a lower outer magnet, a lower outer magnetic conductor, an upper outer magnetic conductor, and an upper outer magnet stacked in sequence; The upper outer magnetic conductor serves as the first peripheral magnetic element, and the upper outer magnet serves as the second peripheral magnetic element; or, the lower outer magnetic conductor serves as the first peripheral magnetic element, and the upper outer magnetic conductor serves as the second peripheral magnetic element.

15. The loudspeaker according to claim 1, characterized in that: The speaker also includes a housing; The magnetic circuit assembly and the vibration assembly are respectively connected to the housing, and the housing, the magnetic circuit assembly, and the vibration assembly form a front cavity and a rear cavity; The contact surfaces of the second surface and the second peripheral magnetic element are sealed to isolate the front cavity and the magnetic gap from each other.

16. The loudspeaker according to claim 1, characterized in that: The vibration assembly further includes a second diaphragm, a dome, and a voice coil; the second diaphragm is spaced around the outer periphery of the first diaphragm, and the dome is connected between the first diaphragm and the second diaphragm; the voice coil is disposed in the magnetic gap; The loudspeaker also includes a housing, to which the outer edge of the second diaphragm is fixed.

17. An electronic device, comprising: include: The casing, and, The loudspeaker according to any one of claims 1-16; The speaker is located inside the housing.

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