Sound production monomer and electronic equipment

Abstract

The invention discloses a sound production single body and electronic equipment, and relates to the technical field of sound energy conversion, the ratio of the length to the width of the sound production single body is larger than 2: 1, the sound production single body comprises a shell, a magnetic circuit system and a vibration system, the magnetic circuit system is connected with the shell, the magnetic circuit system comprises a supporting plate and two magnetic assemblies arranged on the supporting plate at intervals, and the vibration system is connected with the shell. A magnetic gap is formed between the two magnetic assemblies; the vibration system is connected with the shell and comprises a vibrating diaphragm, a framework, a voice coil and a centering disk which are arranged in the vibration direction, the axial direction of the voice coil is perpendicular to the vibration direction, and the voice coil is arranged in the magnetic gap; the framework comprises a main body part extending in the length direction and connecting parts arranged at the two ends of the main body part in the length direction, the main body part is connected with the vibrating diaphragm, and the voice coil and the centering disk are connected to the connecting parts. The main body part of the framework is connected with the vibrating diaphragm, so that the structural strength of the vibrating diaphragm is improved, segmentation vibration of the reinforcing part of the vibrating diaphragm during high-frequency vibration is avoided, and the acoustic performance of the loudspeaker is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of acoustic energy conversion, and particularly to a sounding element and an electronic device. Background Art

[0002] With the development of the thinning and intelligence of smart wearable products, more and more electronic components are added to smart wearable devices to enable smart devices to meet more intelligent development needs. As the number of electronic components in smart wearable devices gradually increases, the space left for the speaker is gradually decreasing. This makes it difficult to improve the acoustic performance of the speaker by increasing its volume. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve the acoustic performance of the speaker, so that it cannot meet the user's usage requirements. Summary of the Invention

[0003] The main object of the present invention is to propose a sounding element and an electronic device, aiming to solve the technical problem of how to improve the acoustic performance of the speaker.

[0004] To achieve the above object, the sounding element proposed by the present invention has a ratio of the length to the width greater than 2:1, the width direction is perpendicular to the length direction, and the sounding element includes:

[0005] A housing;

[0006] A magnetic circuit system, the magnetic circuit system is connected to the housing, the magnetic circuit system includes a support plate and two magnetic components spaced apart on the support plate, and a magnetic gap is formed between the two magnetic components;

[0007] A vibration system, the vibration system is connected to the housing, the vibration system includes a diaphragm, a skeleton, a voice coil and a centering washer arranged along the vibration direction, the vibration direction is perpendicular to the length direction and the width direction, the axis of the voice coil is perpendicular to the vibration direction, and the voice coil is arranged in the magnetic gap; wherein,

[0008] The skeleton includes a main body portion extending along the length direction and connecting portions provided at both ends of the main body portion along the length direction, the main body portion is connected to the diaphragm, and the voice coil and the centering washer are both connected to the connecting portions.

[0009] In an embodiment, the main body portion includes a main body section and a strengthening section, the main body section includes two main body plates spaced apart along the width direction, both main body plates are connected to the diaphragm, the strengthening section includes an arc-shaped bending plate, the arc-shaped bending plate bends away from the diaphragm, the two main body plates are connected by the arc-shaped bending plate, and both ends of the two main body plates along the length direction are connected to the connecting portions.

[0010] In one embodiment, the connecting portion includes two clamping members, the two clamping members are respectively arranged at two ends of the main body portion along the length direction, both of the two clamping members are used for clamping the voice coil, and both of the two clamping members are connected to the centering support piece.

[0011] In one embodiment, both of the two clamping members each include two clamping plates arranged at intervals in the width direction, the two clamping plates are used for clamping the voice coil, each clamping plate is connected to the main body section, one end of one clamping plate of each clamping member, which is far away from the main body section, is bent away from the voice coil to form a connecting piece, the two connecting pieces are respectively arranged on both sides of the voice coil in the width direction, and the centering support piece is connected to the connecting piece.

[0012] In one embodiment, each clamping plate includes a reinforcing plate, a connecting plate and a clamping plate connected in sequence along the vibration direction, the two clamping plates of each clamping member are used for clamping the voice coil, one end of one clamping plate of each clamping member, which is far away from the main body section, is bent away from the voice coil to form the connecting piece, the distance between the two reinforcing plates of each clamping member is greater than the distance between the two clamping plates, and each reinforcing plate has a reinforcing protrusion formed by inward protrusion.

[0013] In one embodiment, the housing includes a first housing and a second housing connected to each other, the sounding element further includes a waterproof ring, the waterproof ring is connected to one side of the first housing far away from the magnetic circuit system, the waterproof ring surrounds the diaphragm, the first housing, the waterproof ring and the diaphragm are integrally injection molded, and the magnetic circuit system is connected to the second housing.

[0014] In one embodiment, a groove is arranged on the inner side of the waterproof ring, and the groove extends along the circumferential direction of the waterproof ring;

[0015] And / or, the outer surface of the waterproof ring extends obliquely in the direction close to the diaphragm from one end close to the first housing to one end far away from the first housing;

[0016] And / or, the waterproof ring has a first protrusion formed by protruding towards the first housing and embedded in the first housing;

[0017] And / or, the first housing has a second protrusion formed by protruding towards the waterproof ring and embedded in the waterproof ring.

[0018] In one embodiment, the second housing is made of a metal material, and the second housing is welded to the support plate.

[0019] In one embodiment, the housing is made of metal and is formed by metal powder injection molding; the housing includes an annular main body portion and a side wall connected to the annular main body portion, and the diaphragm and the magnetic circuit system are respectively connected to the annular main body portion and the side wall.

[0020] In one embodiment, both of the two magnetic components extend away from the voice coil to form lateral extension portions, and the side wall is provided with accommodation holes for accommodating the extension portions;

[0021] And / or, the sounding element further includes a steel plate, the steel plate is made of non-magnetic steel, the steel plate is disposed inside the housing, and one end of each magnetic component facing away from the support plate is connected to the steel plate;

[0022] And / or, the side wall is welded to the support plate.

[0023] In one embodiment, on one side of the two magnetic components close to the magnetic gap, a convex structure portion is formed protruding away from the support plate along the vibration direction;

[0024] And / or, each magnetic component includes a first magnet, a second magnet, and a third magnet sequentially arranged along the vibration direction, the third magnet is disposed on the support plate, and both the first magnet and the third magnet are magnetized along a direction perpendicular to the vibration direction and the magnetization directions are opposite; the second magnet is magnetized along the vibration direction, and the polarity of the magnetic pole of the second magnet facing the first magnet is the same as the polarity of the magnetic pole of the first magnet on the side close to the magnetic gap, and the support plate is made of a non-magnetic material;

[0025] And / or, the support plate is provided with an avoidance hole facing the magnetic gap; the sounding element further includes a covering member, the covering member is located on the side of the support plate facing away from the voice coil, and the covering member covers the avoidance hole;

[0026] And / or, the voice coil has two long axis sides extending along the length direction and a short axis side connecting the two long axis sides, and the connecting portions are all connected to the short axis side.

[0027] In one embodiment, the diaphragm includes a surround and a reinforcing portion disposed in the central region of the surround, the surround and the reinforcing portion are integrally injection molded, the surround is connected to the housing, and the reinforcing portion is connected to the main body portion;

[0028] The reinforcing portion is provided with a plurality of ventilation holes, and the sounding element further includes a waterproof breathable film covering the ventilation holes;

[0029] Or, at least a part of the structure of the reinforcing portion is made of a breathable material, and the sounding element further includes a waterproof breathable film covering the breathable material;

[0030] And / or, the reinforcement portion is provided with reinforcement ribs, and the reinforcement ribs are located in a central area of ​​the reinforcement portion and extend along the length direction.

[0031] In one embodiment, the centering support plates include two, and the two centering support plates are arranged at the two ends of the sound unit along the length direction, and each of the centering support plates includes a first fixing portion, an elastic arm portion, and a second fixing portion. The first fixing portion is arranged on the outer shell, and the second fixing portion is connected to the connecting portion. The two ends of the elastic arm portion are respectively connected to the first fixing portion and the second fixing portion, and the two centering support plates are connected through a conductive connecting portion, and the conductive connecting portion is also provided with an external soldering pad that can be electrically connected to an external circuit.

[0032] In one embodiment, the conductive connection portion is located on the outside of the housing, the conductive connection portion includes two electrical connection portions respectively connected to the two centering support plates and an external connection portion connecting the two electrical connection portions, the external connection portion is provided with the external soldering pad, the electrical connection portion is made of plastic material, and the electrical connection portion can be bent toward a side close to the support plate so that a side of the external connection portion facing away from the external soldering pad abuts against the support plate;

[0033] And / or, the conductive connecting portion and the centering support piece are an integrally formed component.

[0034] The present invention also provides an electronic device, which includes the above-mentioned sound-emitting unit.

[0035] In the technical solution of the present invention, the voice coil is connected to the diaphragm through a skeleton, so that the skeleton can transmit the driving force generated by the voice coil to the diaphragm, thereby driving the diaphragm to vibrate; by connecting the centering support plate to the skeleton, the probability of polarization of the voice coil is reduced, and the vibration stability of the voice coil is improved; a skeleton extending along the length direction is provided to connect the diaphragm, thereby improving the structural strength of the connection between the diaphragm and the skeleton, thereby reducing the deformation of this part of the structure during vibration, thereby avoiding the split vibration of the reinforcement part of the diaphragm during high-frequency vibration, and improving the acoustic performance of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1Schematic structural diagram of an embodiment where the conductive connection part of the sound generating monomer provided by the present invention is not bent;

[0038] Figure 2 Schematic structural diagram of another perspective of an embodiment where the conductive connection part of the sound generating monomer provided by the present invention is not bent;

[0039] Figure 3 Schematic structural diagram of an embodiment where the conductive connection part of the sound generating monomer provided by the present invention is bent;

[0040] Figure 4 Exploded schematic structural diagram of an embodiment of the sound generating monomer provided by the present invention;

[0041] Figure 5 Front view schematic structural diagram of an embodiment of the sound generating monomer provided by the present invention;

[0042] Figure 6 For Figure 5 Cross-sectional structural diagram at A - A;

[0043] Figure 7 Cross-sectional structural diagram of an embodiment of a partial structure of the sound generating monomer provided by the present invention;

[0044] Figure 8 For Figure 7 Local enlarged schematic diagram at A;

[0045] Figure 9 Schematic structural diagram of an embodiment of a partial structure of the sound generating monomer provided by the present invention;

[0046] Figure 10 Front view schematic structural diagram of an embodiment of the framework provided by the present invention;

[0047] Figure 11 Side view schematic structural diagram of an embodiment of the framework provided by the present invention;

[0048] Figure 12 Top view schematic structural diagram of an embodiment of the framework provided by the present invention;

[0049] Figure 13 Schematic structural diagram of an embodiment of the framework provided by the present invention;

[0050] Figure 14 Schematic structural diagram of an embodiment of the magnetic component and the flat voice coil provided by the present invention;

[0051] Figure 15 Schematic diagram of the magnetic field line distribution of an embodiment of the magnetic component provided by the present invention;

[0052] Figure 16Schematic diagram of magnetic field line distribution of another embodiment of the magnetic component provided by the present invention;

[0053] Figure 17 Front view structural schematic diagram of another embodiment of the sounding element provided by the present invention;

[0054] Figure 18 is Figure 17 Cross-sectional structural schematic diagram at B-B;

[0055] Figure 19 Structural schematic diagram of an embodiment where the sounding element provided by the present invention is disposed in the housing of an electronic device.

[0056] Explanation of reference numerals in the drawings:

[0057] 100, sounding element; 1, housing; 11, first housing; 12, second housing; 13, annular main body portion; 14, side wall; 141, accommodation hole; 15, central portion; 16, end portion; 2, magnetic circuit system; 21, support plate; 211, avoidance hole; 212, bottom plate; 213, surrounding plate; 22, magnetic component; 221, first magnet; 2211, convex structure portion; 222, second magnet; 223, third magnet; 224, fourth magnet; 225, magnetic gap; 226, lateral extension portion; 3, vibration system; 31, diaphragm; 311, surround; 312, reinforcement portion; 3121, ventilation hole; 32, voice coil; 32A, flat voice coil; 321, first long axis section; 322, second long axis section; 33, centering washer; 331, first fixing portion; 332, elastic arm portion; 333, second fixing portion; 3331, inner connection pad; 334, conductive connection portion; 3341, electrical connection portion; 3342, outer connection portion; 33421, outer connection pad; 34, skeleton; 341, main body portion; 3411, main body section; 34111, main body plate; 3412, strengthening section; 34121, arc-shaped bending plate; 34122, communication cavity; 342, connection portion; 3421, clamping member; 34211, clamping plate; 34212, strengthening plate; 34213, connecting plate; 34214, clamping plate; 34215, connecting piece; 34216, strengthening protrusion; 4, waterproof ring; 41, groove; 42, first protrusion portion; 5, covering member; 51, release film; 6, steel plate; 7, waterproof and breathable film;

[0058] 200, housing of the electronic device.

[0059] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0061] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0062] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] With the development of the thinning and intelligence of smart wearable products, more and more electronic components are added to smart wearable devices to enable smart devices to meet more intelligent development needs. As the number of electronic components in smart wearable devices gradually increases, the space left for the speaker is gradually decreasing. This makes it difficult to improve the acoustic performance of the speaker by increasing its volume. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve the acoustic performance of the speaker, so that the user's usage requirements cannot be met.

[0064] In view of this, it is necessary to propose a sounding element and an electronic device, aiming to solve the technical problem of how to improve the acoustic performance of the speaker.

[0065] Please refer to Figures 1 to 3, in an embodiment of the present invention, the ratio of the length to the width of the sound generating element 100 is greater than 2:1. The sound generating element 100 includes a housing 1, a magnetic circuit system 2, and a vibration system 3. The magnetic circuit system 2 is connected to the housing 1. The magnetic circuit system 2 includes a support plate 21 and two magnetic components 22 spaced apart on the support plate 21. A magnetic gap 225 is formed between the two magnetic components 22. The vibration system 3 is connected to the housing 1. The vibration system 3 includes a diaphragm 31, a skeleton 34, a voice coil 32, and a centering washer 33 arranged along the vibration direction. The axial direction of the voice coil 32 is perpendicular to the vibration direction. The voice coil 32 is disposed in the magnetic gap 225. The skeleton 34 includes a main body portion 341 extending along the length direction and connecting portions 342 provided at both ends of the main body portion 341 along the length direction. The main body portion 341 is connected to the diaphragm 31. Both the voice coil 32 and the centering washer 33 are connected to the connecting portion 342.

[0066] The sound generating element 100 of the present invention can be a speaker element. The sound generating element 100 can be applied in the sound generating module of an electronic device. The electronic device can be a computer, a mobile phone, a smart wearable device, etc. This embodiment takes the sound generating element 100 as a speaker element for illustration.

[0067] Among them, the voice coil 32 is connected to the diaphragm 31 through the skeleton 34, so that the skeleton 34 can transmit the driving force generated by the voice coil 32 to the diaphragm 31. Furthermore, the energized voice coil 32 can drive the diaphragm 31 to vibrate through the skeleton 34. The diaphragm 31 vibrates up and down to drive the air to generate sound, completing the energy conversion between electricity and sound. By connecting the centering washer 33 to the skeleton 34, the probability of the voice coil 32 being polarized is reduced, and the vibration stability of the voice coil 32 is improved. The skeleton 34 with the main body portion 341 extending along the length direction is connected to the diaphragm 31, so as to improve the structural strength at the connection between the diaphragm 31 and the skeleton 34, thereby reducing the deformation generated by this part of the structure during vibration, and further avoiding the splitting vibration of the reinforcing portion 312 of the diaphragm 31 during high-frequency vibration, enabling the speaker to provide clearer and more standard sound quality and improving the acoustic performance of the speaker. It should be noted that the voice coil 32 is a flat voice coil 32A formed by winding a wire. It should also be noted that the vibration direction is Figure 1 the up and down direction shown, and the length direction is Figure 1 the left and right direction shown.

[0068] In this embodiment, the outer shape of the sound generating element 100 is narrow and long. It should be noted that the sound generating element 100 has a height (thickness) along the vibration direction, a length along the length direction, and a width along the width direction. The vibration direction, the length direction, and the width direction are perpendicular to each other. The ratio of the length to the width of the sound generating element 100 is greater than 2:1, which can better adapt to the reserved space of the micro electronic device.

[0069] It should be noted that the aspect ratio of the sound generating element 100 refers to the ratio of the length dimension of the sound generating element 100 in the length direction to the width dimension of the sound generating element 100 in the width direction, wherein the vibration direction, the width direction, and the length direction are perpendicular to each other. Among them, the width direction is Figure 1 the front-back direction shown.

[0070] Please refer to Figure 10 , in an embodiment, the main body portion 341 includes a main body segment 3411 and a reinforcement segment 3412. One side of the main body segment 3411 is connected to the diaphragm 31, and the other side of the main body segment 3411 is connected to the reinforcement segment 3412. The connecting portions 342 are provided at both ends of the main body segment 3411 along the length direction. By providing the reinforcement segment 3412, the overall structural strength of the main body portion 341 is enhanced, and the stiffness of the cross-section of the main body portion 341 is improved. The diaphragm 31 includes a surround 311 and a reinforcement portion 312 provided in the central region of the surround 311. The main body segment 3411 is connected to the reinforcement portion 312. Since the reinforcement segment 3412 enhances the overall structural strength of the main body portion 341, the ability of the reinforcement portion 312 to resist deformation is improved, thereby avoiding the splitting vibration of the reinforcement portion 312 of the diaphragm 31 during high-frequency vibration, enabling the speaker to provide clearer and more standard sound quality, and improving the acoustic performance of the speaker.

[0071] Please refer to Figure 10 and Figure 11 , in an embodiment, the connecting portion 342 includes two clamping members 3421. The two clamping members 3421 are respectively provided at both ends of the main body portion 341 along the length direction. The two clamping members 3421 are both used to clamp the voice coil 32, and the two clamping members 3421 are both connected to the centering washer 33. Among them, the voice coil 32 is a flat voice coil 32A. The two clamping members 3421 respectively clamp both ends of the flat voice coil 32A along the length direction, thereby realizing the fixation of the flat voice coil 32A, so that the vibration of the flat voice coil 32A can be smoothly transmitted to the diaphragm 31 through the clamping members 3421 and the main body portion 341. It should be noted that the voice coil 32 is bonded to the clamping member 3421. It should also be noted that the two clamping members 3421 both clamp the short axis of the voice coil 32, so that the clamping members 3421 are located outside the magnetic gap 225. Therefore, the clamping members 3421 do not occupy the width of the magnetic gap 225, reducing the width of the sound generating element 100, or when the width is certain, the sound generating element 100 of this embodiment can use a larger magnetic circuit system 2, thereby improving the magnetic field performance of the magnetic circuit system 2 by increasing the size of the magnetic circuit system 2.

[0072] According to an embodiment of the present invention, the connecting portion 342 includes a fixture that extends along the length direction. The fixture includes two clamping plates 34211 spaced apart in the width direction. The two clamping plates 34211 clamp the flat voice coil 32A. The clamping of the flat voice coil 32A can be achieved by one fixture. The fixture extends along the length direction, ensuring the reliability of the clamping of the flat voice coil 32A by the fixture.

[0073] Please refer to Figures 11 to 13 , in an embodiment, both of the two clamping members 3421 include two clamping plates 34211 spaced apart in the width direction. The width direction is perpendicular to the length direction. The two clamping plates 34211 are used to clamp the voice coil 32. Each clamping plate 34211 is connected to the main body section 3411. One end of a clamping plate 34211 of each clamping member 3421 away from the main body section 3411 is bent away from the voice coil 32 to form a connecting piece 34215. The two connecting pieces 34215 are respectively arranged on both sides of the voice coil 32 in the width direction. The centering support piece 33 is connected to the connecting piece 34215. For the two ends of the flat voice coil 32A along the length direction, one end is clamped by the two clamping plates 34211 of one clamping member 3421, and the other end is clamped by the two clamping plates 34211 of the other clamping member 3421; by providing the connecting piece 34215 for the centering support piece 33 to be connected thereto, the two connecting pieces 34215 are respectively arranged on both sides of the flat voice coil 32A in the width direction, which is used to balance the vibration state of the flat voice coil 32A, improve the vibration stability of the flat voice coil 32A, and reduce the probability of polarization of the flat voice coil 32A. It should be noted that the two connecting pieces 34215 are both bonded to the centering support piece 33.

[0074] Please refer to Figures 11 to 13, in one embodiment, each clamping plate 34211 includes a reinforcing plate 34212, a connecting plate 34213, and a clamping plate 34214 that are sequentially connected along the vibration direction. The two clamping plates 34214 of each clamping member 3421 are used to clamp the voice coil 32. One end of a clamping plate 34214 of each clamping member 3421 away from the main body section 3411 bends away from the voice coil 32 to form a connecting piece 34215. The distance between the two reinforcing plates 34212 of each clamping member 3421 is greater than the distance between the two clamping plates 34214. Each reinforcing plate 34212 has a reinforcing protrusion 34216 formed by inward protrusion. Taking one clamping member 3421 as an example, the distance between the two reinforcing plates 34212 of this clamping member 3421 is greater than the distance between the clamping plates 34214 to avoid interference between the inward protruded reinforcing protrusion 34216 on the reinforcing plate 34212 and the voice coil 32, and at the same time, it can also play a role in improving the structural strength of the clamping plate 34211; one reinforcing plate 34212 forms a reinforcing protrusion 34216 towards the other reinforcing plate 34212, that is, inward protrusion, to avoid the phenomenon of outward protrusion of the reinforcing plate 34212 interfering with other structural parts; by setting the reinforcing protrusion 34216 on the reinforcing plate 34212, the structural strength of the clamping plate 34211 is effectively improved, providing a guarantee for the clamping of the voice coil 32 by the clamping plate 34211. It should be noted that the two clamping plates 34211 of each clamping member 3421 are arranged at intervals to form an air flow channel that communicates with each other, effectively improving the smoothness of air flow.

[0075] Please refer to Figure 11 and Figure 13 , in one embodiment, the main body section 3411 includes two main body plates 34111 arranged at intervals along the width direction. The reinforcing section 3412 includes an arc-shaped bending plate 34121. The arc-shaped bending plate 34121 bends away from the diaphragm 31. The two main body plates 34111 are connected by the arc-shaped bending plate 34121. Both ends of the two main body plates 34111 along the length direction are connected to the connecting portion 342. By setting the arc-shaped bending plate 34121, the cross-sectional stiffness of the main body portion 341 is improved, and further the ability of the reinforcing portion 312 connected thereto to resist deformation is improved, thereby avoiding the splitting vibration of the reinforcing portion 312 of the diaphragm 31 during high-frequency vibration, enabling the speaker to provide clearer and more standard sound quality and improving the acoustic performance of the speaker. It should be noted that the main body section 3411 is bonded to the reinforcing portion 312.

[0076] Please refer to Figures 4 to 6, in one embodiment, the housing 1 includes a first housing 11 and a second housing 12 that are connected to each other. The diaphragm 31 is connected to the first housing 11, and the magnetic circuit system 2 is connected to the second housing 12. Among them, the first housing 11 and the second housing 12 can be adhesively connected or snap-connected, and no limitation is made here; the connection of the magnetic circuit system 2 to the second housing 12 can be the connection of the magnetic component 22 to the second housing 12 or the connection of the support plate 21 to the second housing 12, and no limitation is made here.

[0077] Please refer to Figure 6 and Figure 7 , in one embodiment, the sound generating element 100 further includes a waterproof ring 4. The waterproof ring 4 is connected to the side of the first housing 11 away from the magnetic circuit system 2. The waterproof ring 4 is disposed around the diaphragm 31, and the first housing 11, the waterproof ring 4, and the diaphragm 31 are integrally injection-molded. The integral injection molding of the first housing 11, the waterproof ring 4, and the diaphragm 31 effectively reduces the number of sealing surfaces and improves the waterproof performance of the sound generating element 100. It should be noted that the waterproof ring 4 is made of a waterproof material.

[0078] Please refer to Figure 7 and Figure 8 , in one embodiment, a groove 41 is provided on the inner side of the waterproof ring 4. The groove 41 extends along the circumferential direction of the waterproof ring 4; by providing the groove 41 on the inner side of the waterproof ring 4, when the waterproof ring 4 is assembled and sealed with the whole machine, the waterproof ring 4 is squeezed, and the setting of this groove 41 has the effect of guiding the waterproof ring 4 to incline inward, avoiding the outward turning of the waterproof ring 4, thereby avoiding waterproof failure. It should be noted that the groove 41 is provided at the connection between the waterproof ring 4 and the diaphragm 31.

[0079] In one embodiment, the outer surface of the waterproof ring 4 extends obliquely in a direction close to the diaphragm 31 from one end close to the first housing 11 to the end away from the first housing 11. When the waterproof ring 4 is assembled and sealed with the whole machine, since the waterproof ring 4 is obliquely arranged in a direction close to the diaphragm 31, the waterproof ring 4 will incline inward when being squeezed, that is, incline in a direction close to the diaphragm 31, avoiding the outward turning of the waterproof ring 4, thereby avoiding waterproof failure.

[0080] Please refer to Figure 7 and Figure 8 , in one embodiment, the waterproof ring 4 has a first convex portion 42 that protrudes toward the first housing 11 and is embedded in the first housing 11; by providing the first convex portion 42 embedded in the first housing 11, the connection strength and connection reliability between the waterproof ring 4 and the first housing 11 are effectively improved.

[0081] According to an embodiment of the present invention, the first housing 11 has a second convex portion that protrudes toward the waterproof ring 4 and is embedded in the waterproof ring 4; by providing the second convex portion embedded in the waterproof ring 4, the connection strength and reliability between the waterproof ring 4 and the first housing 11 are effectively improved.

[0082] Please refer to Figure 17 , in an embodiment, the second housing 12 is made of metal, and the second housing 12 is welded to the support plate 21. The second housing 12 is made of metal and welded to the support plate 21, thereby effectively enhancing the strength of the sound generating unit 100, so that when the sound generating unit 100 is assembled with the whole unit, water pressure is not likely to cause deformation of the product.

[0083] In an embodiment, the outer shell 1 is made of metal, and the outer shell 1 is formed by metal powder injection molding. The outer shell 1 is entirely made of metal, thereby effectively enhancing the strength of the sound generating unit 100, so that when the sound generating unit 100 is assembled with the whole unit, water pressure is not likely to cause deformation of the product.

[0084] Please refer to Figure 17 and Figure 18 , in an embodiment, the outer shell 1 includes an annular main body portion 13 and a side wall 14 connected to the annular main body portion 13. The diaphragm 31 and the magnetic circuit system 2 are respectively connected to the annular main body portion 13 and the side wall 14. Among them, the diaphragm 31 is connected to the annular main body portion 13, the support plate 21 is connected to the side wall 14, and the magnetic component 22 is disposed on the support plate 21, thereby restricting the relative movement of the magnetic component 22 with respect to the side wall 14.

[0085] Please refer to Figure 6 , in an embodiment, both magnetic components 22 extend away from the voice coil 32 to form lateral extension portions 226, and the side wall 14 is provided with accommodation holes 141 for accommodating the extension portions; by providing the accommodation holes 141 on the side wall 14, each magnetic component 22 can extend outward to form the lateral extension portions 226, thereby increasing the volume of each magnetic component 22, improving the magnetic field strength, and further enhancing the acoustic performance of the speaker.

[0086] Please refer to Figure 18 , in an embodiment, the sound generating unit 100 further includes a steel plate 6. The steel plate 6 is made of non-magnetic steel, and the steel plate 6 is disposed inside the outer shell 1. One end of each magnetic component 22 facing away from the support plate 21 is connected to the steel plate 6; by providing the steel plate 6, the area of the structural member connected to the magnetic component 22 is increased, and the connection strength and reliability of the magnetic component 22 are improved; among them, the steel plate 6 is made of non-magnetic steel so that more magnetic force lines of the first magnet 221 can pass through the flat voice coil 32A in a direction perpendicular to the vibration direction, avoiding the dispersion of magnetic force lines and ensuring the driving force of the flat voice coil 32A.

[0087] Furthermore, the steel plate 6 is an annular plate, and in the vibration direction of the vibration system 3, at least a portion of the steel plate 6 is arranged opposite to the deformed portion of the folding ring 311. In this way, when the front side of the sound-emitting unit 100 is subjected to water pressure, the steel plate 6 can support the folding ring 311 and the reinforcement part 312, thereby avoiding the risk of cracking of the diaphragm 31 and improving the reliability of the connection between the folding ring 311, the reinforcement part 312 and the first shell 11.

[0088] See also Figure 17 In one embodiment, the side wall 14 is welded to the support plate 21. By welding the side wall 14 to the support plate 21, the strength of the sound unit 100 is effectively enhanced, so that when the sound unit 100 is assembled with the whole machine, the water pressure is not easy to cause the product to deform.

[0089] See also Figure 6 In one embodiment, one side of the two magnetic components 22 close to the magnetic gap 225 protrudes along the vibration direction in a direction away from the support plate 21 to form a protruding structure portion 2211; by providing the protruding structure portion 2211, the volume of the two magnetic components 22 is expanded, the magnetic induction intensity is improved, and the magnetic field area of ​​the flat voice coil 32A is further expanded, so that the driving force factor of the sound unit 100 can be symmetrical relative to the static equilibrium position.

[0090] See also Figure 2 , Figure 14 and Figure 15, in one embodiment, each magnetic component 22 includes a first magnet 221, a second magnet 222, and a third magnet 223 arranged in sequence along the vibration direction. The third magnet 223 is disposed on the support plate 21. Both the first magnet 221 and the third magnet 223 are magnetized in a direction perpendicular to the vibration direction (i.e., the width direction) and have opposite magnetization directions; the second magnet 222 is magnetized along the vibration direction, and the polarity of the pole of the second magnet 222 facing the first magnet 221 is the same as the polarity of the pole of the first magnet 221 close to the magnetic gap 225. The support plate 21 is made of a non-magnetic material. In this embodiment, by magnetizing the first magnet 221 and the third magnet 223 in a direction perpendicular to the vibration direction and with opposite magnetization directions, and magnetizing the second magnet 222 along the vibration direction, and the polarity of the pole of the second magnet 222 facing the first magnet 221 is the same as the polarity of the pole of the first magnet 221 close to the magnetic gap 225, the magnetic component 22 can form a magnetic field enhancement side facing the magnetic gap 225, thereby enhancing the magnetic field driving force and improving the acoustic performance of the speaker. Taking the forward magnetization of the first magnet 221 as an example, the second magnet 222 located on the front side of the magnetic gap 225 is magnetized downward, the second magnet 222 located on the rear side of the magnetic gap 225 is magnetized upward, and the third magnet 223 is magnetized backward, so that the magnetic component 22 forms a magnetic field enhancement side facing the magnetic gap 225. Moreover, the polarities of the poles of the two first magnets 221 close to the magnetic gap 225 are opposite, so that the magnetic force lines of the two magnetic components 22 can form a complete magnetic force line closed loop, thereby enhancing the magnetic field strength and improving the acoustic performance of the speaker. It should be noted that the support plate 21 is made of a non-magnetic material, so that more magnetic force lines of the third magnet 223 can pass through the flat voice coil 32A in a direction perpendicular to the vibration direction, avoiding the dispersion of magnetic force lines and ensuring the driving force of the flat voice coil 32A.

[0091] Please refer to Figure 2 and Figure 16, according to an embodiment of the present invention, the magnetic component 22 further includes a fourth magnet 224. The fourth magnet 224 is disposed on a side of the third magnet 223 away from the second magnet 222 along the vibration direction. The fourth magnet 224 is magnetized along the vibration direction, and the polarity of the magnetic pole of the fourth magnet 224 facing the third magnet 223 is the same as the polarity of the magnetic pole of the third magnet 223 on the side close to the magnetic gap 225, so that the magnetic component 22 can form a magnetic field enhancement side facing the magnetic gap 225. Moreover, the polarities of the magnetic poles of the two first magnets 221 close to the magnetic gap 225 are opposite. In this embodiment, by using the first magnet 221 and the third magnet 223 both magnetized in a direction perpendicular to the vibration direction and with opposite magnetization directions, the second magnet 222 and the fourth magnet 224 are both magnetized along the vibration direction, the polarity of the magnetic pole of the second magnet 222 facing the first magnet 221 is the same as the polarity of the magnetic pole of the first magnet 221 on the side close to the magnetic gap 225, and the polarity of the magnetic pole of the fourth magnet 224 facing the third magnet 223 is the same as the polarity of the magnetic pole of the third magnet 223 on the side close to the magnetic gap 225, so that the magnetic component 22 can form a magnetic field enhancement side facing the magnetic gap 225. And, the polarities of the magnetic poles of the two first magnets 221 close to the magnetic gap 225 are opposite, so that the magnetic force lines of the two magnetic components 22 form a circular state, thereby enhancing the magnetic field driving force and improving the acoustic performance of the speaker. Among them, taking the first magnet 221 being magnetized forward as an example, the second magnet 222 on the front side of the magnetic gap 225 is magnetized downward, the second magnet 222 on the rear side of the magnetic gap 225 is magnetized upward, the third magnet 223 is magnetized backward, the fourth magnet 224 on the front side of the magnetic gap 225 is magnetized upward, and the fourth magnet 224 on the rear side of the magnetic gap 225 is magnetized downward, so that the magnetic component 22 forms a magnetic field enhancement side facing the magnetic gap 225, and the polarities of the magnetic poles of the two first magnets 221 close to the magnetic gap 225 are opposite, so that the magnetic force lines of the two magnetic components 22 can form a complete magnetic force line closed loop, thereby enhancing the magnetic field strength and improving the acoustic performance of the speaker. It should be noted that the support plate 21 is made of a magnetic conductive material. By setting the support plate 21 to correct the magnetic force lines of the fourth magnet 224, more magnetic force lines can pass through the flat voice coil 32A, thereby enhancing the induction intensity of the flat voice coil 32A and further improving the acoustic performance of the speaker.

[0092] Please refer to Figure 7 and Figure 9 , according to an embodiment of the present invention, the flat voice coil 32A includes a first long axis section 321 and a second long axis section 322 which are sequentially arranged at intervals along the vibration direction. The first long axis section 321 and the second long axis section 322 both extend along the length direction. The thickness of the first magnet 221 along the vibration direction is not less than 80% of the height of the first long axis section 321 along the vibration direction; through this setting, the number of magnetic force lines passing through the first long axis section 321 is increased, the driving force of the flat voice coil 32A is improved, and the acoustic performance of the sound generating unit 100 is enhanced.

[0093] See also Figure 16 In one embodiment, the thickness of the second magnet 222 along the vibration direction is not less than eighty percent of the height of the second long axis segment 322 along the vibration direction; through this arrangement, the number of magnetic lines of force passing through the second long axis segment 322 is increased, the driving force of the flat voice coil 32A is improved, and the acoustic performance of the sound unit 100 is enhanced.

[0094] In one embodiment, the thickness of the second magnet 222 along the vibration direction is greater than the thickness of the first magnet 221 and the third magnet 223 along the vibration direction; through this arrangement, the number of magnetic lines of force passing through the first long axis segment 321 and the second long axis segment 322 is increased, the driving force of the flat voice coil 32A is improved, and the acoustic performance of the sound unit 100 is enhanced.

[0095] In one embodiment, the thickness of the fourth magnet 224 along the vibration direction is greater than the thickness of the first magnet 221 and the third magnet 223. This configuration increases the number of magnetic flux lines passing through the support plate 21, thereby increasing the number of magnetic flux lines passing through the flat voice coil 32A, improving the driving force of the flat voice coil 32A, and enhancing the acoustic performance of the sound unit 100.

[0096] In one embodiment, the support plate 21 is provided with an avoidance hole 211 facing the magnetic gap 225; the sound unit 100 further includes a cover 5, which is located on the side of the support plate 21 away from the voice coil 32, and the cover 5 covers the avoidance hole 211; by providing the avoidance hole 211, a larger vibration space is provided for the flat voice coil 32A. By providing the cover 5 covering the avoidance hole 211, the amplitude symmetry of the sound unit 100 is adjusted. It should be noted that the cover 5 can be a cover plate or a nylon mesh.

[0097] In one embodiment, the voice coil 32 has two long axis sides extending along the length direction and short axis sides connecting the two long axis sides, and the connecting parts 342 are connected to the short axis sides; the connecting parts 342 are located outside the magnetic gap 225, so the connecting parts 342 do not occupy the width of the magnetic gap 225, thereby reducing the width of the sound unit 100, or when the width is constant, the sound unit 100 of this embodiment can use a larger magnetic circuit system 2, thereby improving the magnetic field performance of the magnetic circuit system 2 by increasing the size of the magnetic circuit system 2.

[0098] See also Figure 6 and Figure 7, in one embodiment, the diaphragm 31 includes a surround 311 and a reinforcing portion 312 disposed in the central region of the surround 311. The surround 311 and the reinforcing portion 312 are integrally injection-molded. The surround 311 is connected to the housing 1, and the reinforcing portion 312 is connected to the main body portion 341. The reinforcing portion 312 is provided with a plurality of vent holes 3121. The sound generating element 100 further includes a waterproof breathable film 7 that covers the vent holes 3121. By providing a plurality of vent holes 3121 in the reinforcing portion 312, it is beneficial to balance the air pressure inside and outside the sound generating element 100. By providing the waterproof breathable film 7 that covers the vent holes 3121, while ensuring the balance of the air pressure inside and outside the sound generating element 100, the waterproof performance of the sound generating element 100 is effectively improved. It should be noted that the arc-shaped bending plate 34121 encloses a communication cavity 34122 with both ends open, and the vent holes 3121 communicate with the communication cavity 34122, thus providing a guarantee for the balance of the air pressure inside and outside the sound generating element 100.

[0099] According to another embodiment of the present invention, at least a part of the structure of the reinforcing portion 312 is made of a breathable material, and the sound generating element 100 further includes a waterproof breathable film 7 that covers the breathable material; at least a part of the reinforcing portion 312 is provided as a breathable material, which is beneficial to balance the air pressure inside and outside the sound generating element 100. By providing the waterproof breathable film 7 that covers the breathable material, while ensuring the balance of the air pressure inside and outside the sound generating element 100, the waterproof performance of the sound generating element 100 is effectively improved. It should be noted that the breathable material can be an organic aerogel or a foam metal, etc.

[0100] According to one embodiment of the present invention, the reinforcing portion 312 is provided with reinforcing ribs. The reinforcing ribs are located in the central region of the reinforcing portion 312 and extend along the length direction. By providing the reinforcing ribs to strengthen the structure of the reinforcing portion 312, the resonance of the reinforcing portion 312 can be effectively shifted to a higher frequency.

[0101] Please refer to Figure 4 , in one embodiment, there are two centering supports 33. The two centering supports 33 are disposed at both ends of the sound generating element 100 along the length direction. Each centering support 33 includes a first fixing portion 331, a spring arm portion 332, and a second fixing portion 333. The first fixing portion 331 is disposed on the housing 1, the second fixing portion 333 is connected to the connecting portion 342, and both ends of the spring arm portion 332 are respectively connected to the first fixing portion 331 and the second fixing portion 333. The two centering supports 33 are connected by a conductive connecting portion 334, and an external welding pad 33421 capable of being electrically connected to an external circuit is further provided on the conductive connecting portion 334. By providing the conductive connecting portion 334, the two centering supports 33 can be electrically conducted, so as to facilitate introducing the current of the external circuit into the flat voice coil 32A. It should be noted that an internal welding pad 3331 is provided on the second fixing portion 333, and the lead of the flat voice coil 32A is electrically connected to the internal welding pad 3331.

[0102] According to an embodiment of the present invention, the conductive connection portion 334 and the centering support piece 33 are integrally formed parts, thereby reducing the number of structural parts and facilitating the assembly of the sound generating unit 100.

[0103] Please refer to Figure 4 and Figure 5 , in an embodiment, the support plate 21 includes a bottom plate 212 and a surrounding plate 213. The magnetic assembly 22 is disposed on the bottom plate 212, the surrounding plate 213 is connected to the side wall 14, and the first fixing portion 331 is clamped between the surrounding plate 213 and the side wall 14. Wherein the first fixing portion 331 is clamped between the surrounding plate 213 and the side wall 14, thereby effectively fixing the first fixing portion 331, and further improving the stability of the vibration of the flat voice coil 32A.

[0104] Please refer to Figures 1 to 3 , in an embodiment, the conductive connection portion 334 is located outside the housing 1. The conductive connection portion 334 includes two electrical connection portions 3341 respectively connecting two centering support pieces 33 and an outer connection portion 3342 connecting the two electrical connection portions 3341. The outer connection portion 3342 is provided with an external bonding pad 33421. The electrical connection portion 3341 is a plastic material, and the electrical connection portion 3341 can be bent toward the side close to the support plate 21 so that the side of the outer connection portion 3342 facing away from the external bonding pad 33421 abuts against the support plate 21. The electrical connection portion 3341 being a plastic material enables the electrical connection portion 3341 to be bent. By abutting the side of the outer connection portion 3342 facing away from the external bonding pad 33421 against the support plate 21, it is convenient for the sound generating unit 100 to be assembled with the whole machine.

[0105] According to an embodiment of the present invention, the covering member 5 is a double-sided adhesive layer. One side of the double-sided adhesive layer is bonded to the side of the support plate 21 facing away from the voice coil 32, and the other side of the double-sided adhesive layer is used to bond the side of the outer connection portion 3342 facing away from the external bonding pad 33421, so that the electrical connection portion 3341 can maintain a bent state, and further facilitate the assembly of the sound generating unit 100 with the whole machine. It should be noted that a release film 51 extending into the avoidance hole 211 is provided on the side of the double-sided adhesive layer facing the magnetic gap 225, and the release film 51 is used to contact the voice coil 32. By providing the release film 51, it is used to prevent the vibrating voice coil 32 from adhering to the double-sided adhesive layer.

[0106] In an embodiment, the aspect ratio of the inner diameter of the flat voice coil 32A is not greater than 20:1; controlling the aspect ratio of the inner diameter of the flat voice coil 32A to be less than or equal to 20:1 is for facilitating the winding of the flat voice coil 32A. It should be noted that the aspect ratio of the inner diameter of the flat voice coil 32A refers to the ratio of the length dimension of the inner circle of the flat voice coil 32A along the length direction to the width dimension of the inner circle of the flat voice coil 32A along the vibration direction.

[0107] In one embodiment, the aspect ratio of the sound generating unit 100 is not greater than 10:1, so as to better meet the installation requirements of some existing narrow installation environments.

[0108] Please refer to Figure 19 , in one embodiment, the housing 1 has a central portion 15 and end portions 16 located at both ends of the central portion 15 along the long side direction of the housing 1, and the central portion 15 protrudes toward the side away from the flat voice coil 32A. It should be noted that the outer surface of the central portion 15 close to the diaphragm 31 protrudes toward the side away from the flat voice coil 32A. Among them, the central portion 15 protrudes toward the side away from the flat voice coil 32A in order to better match the shape of the housing 200 of the electronic device, so that the housing 1 can extend along the housing 200 of the electronic device, realizing the sealed abutment between the housing 1 and the housing 200 of the electronic device; the central portion 15 protrudes toward the side away from the flat voice coil 32A, making the housing 1 in a curved shape or an approximately curved shape to match the shape of the housing 200 of the electronic device, thereby improving the utilization rate of the internal space of the housing 200 of the electronic device. In this embodiment, the outer shape of the diaphragm 31 and the outer shape of the housing 1 are arranged in a similar manner. By matching the shape of the housing 1 with the shape of the housing 200 of the electronic device, part of the gap is used as the vibration space of the diaphragm 31. Thus, without increasing the installation space of the sound generating unit 100, the vibration space of the diaphragm 31 is increased, and the volume of the front sound cavity of the sound generating unit 100 is also increased, thereby effectively improving the acoustic performance of the sound generating unit 100. It should be noted that the outer surface of the housing 1 can be an overall arc structure, or the central portion 15 can be a flat portion, and the end portions 16 can be flat portions or curved surfaces, or the central portion 15 can be a curved surface portion, and the end portions 16 can be flat portions or curved surfaces.

[0109] The present invention also provides an electronic device, which includes the above-mentioned sound generating unit 100. The electronic device can be a computer, a mobile phone, a smart wearable device, etc. The specific structure of the sound generating unit 100 refers to the above-mentioned embodiments. Since the electronic device adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0110] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: The ratio of the length to the width of the sound-emitting monomer is greater than 2:1, the width direction is perpendicular to the length direction, and the sound-emitting monomer includes: shell; A magnetic circuit system, the magnetic circuit system is connected to the housing, the magnetic circuit system comprises a support plate and two magnetic components spaced apart on the support plate, a magnetic gap is formed between the two magnetic components; A vibration system, the vibration system is connected to the housing, the vibration system comprises a diaphragm, a frame, a voice coil and a centering support arranged along a vibration direction, the vibration direction is perpendicular to the length direction and the width direction, the axial direction of the voice coil is perpendicular to the vibration direction, and the voice coil is arranged in the magnetic gap; wherein, The skeleton includes a main body extending along the length direction and connecting parts arranged at both ends of the main body along the length direction. The main body is connected to the diaphragm, and the voice coil and the centering support are both connected to the connecting parts.

2. The sound-emitting unit according to claim 1, characterized in that: The main body portion includes a main body section and a reinforcement section, the main body section includes two main body plates spaced apart along the width direction, both of the two main body plates are connected to the diaphragm, the reinforcement section includes an arc-shaped bending plate, the arc-shaped bending plate is bent in a direction away from the diaphragm, the two main body plates are connected by the arc-shaped bending plate, and both ends of the two main body plates along the length direction are connected to the connecting portion.

3. The sound-emitting unit according to claim 2, characterized in that: The connecting portion includes two clamping members, which are respectively arranged at two ends of the main body along the length direction, and the two clamping members are both used to clamp the voice coil, and the two clamping members are both connected to the centering support plate.

4. The sound-emitting unit according to claim 3, characterized in that: The two clamping members each include two clamping plates spaced apart along the width direction, the two clamping plates are used to clamp the voice coil, each of the clamping plates is connected to the main body section, one end of a clamping plate of each clamping member away from the main body section is bent in a direction away from the voice coil to form a connecting piece, the two connecting pieces are respectively arranged on both sides of the voice coil along the width direction, and the centering support piece is connected to the connecting piece.

5. The sound-emitting unit according to claim 4, characterized in that: Each of the clamping plates includes a reinforcing plate, a connecting plate and a clamping plate which are sequentially connected along the vibration direction. The two clamping plates of each clamping member are used to clamp the voice coil. One end of a clamping plate of each clamping member away from the main body section is bent in a direction away from the voice coil to form the connecting plate. The distance between the two reinforcing plates of each clamping member is greater than the distance between the two clamping plates. Each of the reinforcing plates has a reinforcing protrusion formed by protruding inward.

6. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The shell includes a first shell and a second shell connected to each other, the sound unit also includes a waterproof ring, the waterproof ring is connected to the side of the first shell away from the magnetic circuit system, the waterproof ring is arranged around the diaphragm, the first shell, the waterproof ring and the diaphragm are integrally injection molded, and the magnetic circuit system is connected to the second shell.

7. The sound-emitting unit according to claim 6, characterized in that: A groove is provided on the inner side of the waterproof ring, and the groove extends along the circumference of the waterproof ring; And / or, the outer surface of the waterproof ring extends obliquely from an end close to the first shell to an end away from the first shell in a direction close to the diaphragm; And / or, the waterproof ring has a first protrusion formed to protrude toward the first shell and embedded in the first shell; And / or, the first shell has a second protrusion formed toward the waterproof ring and embedded in the waterproof ring.

8. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The shell is made of metal and is formed by metal powder injection molding; the shell includes an annular main body and a side wall connected to the annular main body, and the diaphragm and the magnetic circuit system are respectively connected to the annular main body and the side wall.

9. The sound-emitting unit according to claim 8, characterized in that: The two magnetic assemblies are both extended in a direction away from the voice coil to form a lateral extension portion, and the side wall is provided with an accommodation hole for accommodating the extension portion; And / or, the sound-emitting unit further comprises a steel plate, the steel plate is made of non-magnetic steel, the steel plate is arranged on the inner side of the housing, and one end of each magnetic component facing away from the support plate is connected to the steel plate; And / or, the side wall is connected to the support plate by welding.

10. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: One side of the two magnetic components close to the magnetic gap is raised along the vibration direction in a direction away from the support plate to form a raised structure part; And / or, each of the magnetic components comprises a first magnet, a second magnet and a third magnet sequentially arranged along the vibration direction, the third magnet is arranged on the support plate, the first magnet and the third magnet are magnetized in a direction perpendicular to the vibration direction and in opposite directions; the second magnet is magnetized along the vibration direction, and the polarity of the magnetic pole of the second magnet facing the first magnet is the same as the polarity of the magnetic pole of the first magnet close to the magnetic gap, and the support plate is made of non-magnetic material; And / or, the support plate is provided with an avoidance hole facing the magnetic gap; the sound unit further comprises a covering member, the covering member is located on a side of the support plate away from the voice coil, and the covering member covers the avoidance hole; And / or, the voice coil has two long axis sides extending along the length direction and a short axis side connecting the two long axis sides, and the connecting parts are all connected to the short axis sides.

11. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The diaphragm comprises a fold and a reinforcement portion provided in the central area of ​​the fold, the fold and the reinforcement portion are integrally injection-molded, the fold is connected to the housing, and the reinforcement portion is connected to the main body; The reinforcement part is provided with a plurality of air holes, and the sound-emitting unit further comprises a waterproof and air-permeable membrane, and the waterproof and air-permeable membrane covers the air holes; Alternatively, at least part of the structure of the reinforcement part is a breathable material, and the sound-emitting unit further includes a waterproof breathable membrane covering the breathable material; And / or, the reinforcement portion is provided with reinforcement ribs, and the reinforcement ribs are located in a central area of ​​the reinforcement portion and extend along the length direction.

12. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The two centering support plates are arranged at the two ends of the sound-emitting unit along the length direction, and each of the centering support plates includes a first fixing portion, an elastic arm portion, and a second fixing portion. The first fixing portion is arranged on the outer shell, and the second fixing portion is connected to the connecting portion. The two ends of the elastic arm portion are respectively connected to the first fixing portion and the second fixing portion. The two centering support plates are connected by a conductive connecting portion, and the conductive connecting portion is also provided with an external soldering pad that can be electrically connected to an external circuit.

13. The sound-emitting unit according to claim 12, characterized in that: The conductive connection part is located on the outer side of the shell, and the conductive connection part includes two electrical connection parts respectively connected to the two centering support plates and an external connection part connecting the two electrical connection parts, the external connection part is provided with the external soldering pad, the electrical connection part is made of plastic material, and the electrical connection part can be bent toward a side close to the support plate so that a side of the external connection part away from the external soldering pad abuts against the support plate; And / or, the conductive connecting portion and the centering support piece are an integrally formed component.

14. An electronic device, characterized in that: The electronic device comprises the sound-emitting unit as claimed in any one of claims 1 to 13.

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