Sound-producing unit and electronic device

Abstract

The present invention relates to the technical field of sound energy conversion. Disclosed are a sound-producing unit and an electronic device. The ratio of the length to the width of the sound-producing unit is greater than 2:1. The sound-producing unit comprises a housing, a magnetic circuit system and a vibration system, wherein the magnetic circuit system is connected to the housing, and comprises a support plate and two magnetic assemblies spaced apart on the support plate, a magnetic gap being formed between the two magnetic assemblies; the vibration system is connected to the housing, and comprises a diaphragm, a framework, a voice coil and a centering support member, which are arranged in a 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; and the framework comprises a main portion extending in the lengthwise direction and connecting portions arranged at two ends of the main portion in the lengthwise direction, the main portion being connected to the diaphragm, and the voice coil and the centering support member both being connected to the connecting portions. Since the main portion of the framework is connected to the diaphragm, the structural strength of the diaphragm is increased, thus avoiding split vibration of a reinforcing portion of the diaphragm during high-frequency vibration, thereby improving the acoustic performance of a speaker.

Description

Sound generator and electronic devices Technical Field

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

[0002] With the development of thinner and smarter smart wearable products, more and more electronic components are being added to smart wearable devices to meet the needs of smart development. As the number of electronic components in smart wearable devices gradually increases, the space left for speakers is gradually decreasing. This makes it difficult to improve the acoustic performance of speakers by increasing their size. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve their acoustic performance and thus failing to meet the needs of users. Summary of the Invention

[0003] The main objective of this invention is to provide a sound-generating unit and electronic device that aims to solve the technical problem of how to improve the acoustic performance of loudspeakers.

[0004] To achieve the above objectives, the present invention proposes a sound-emitting unit, wherein the ratio of the length to the width of the sound-emitting unit is greater than 2:1, the width direction is perpendicular to the length direction, and the sound-emitting unit comprises:

[0005] shell;

[0006] A magnetic circuit system connected to the outer casing, the magnetic circuit system including a support plate and two magnetic components spaced apart on the support plate, with a magnetic gap formed between the two magnetic components;

[0007] A vibration system connected to the outer casing includes a diaphragm, a frame, a voice coil, and a centering support arranged along the vibration direction. The vibration direction is perpendicular to both the length and width directions. The axial direction of the voice coil is perpendicular to the vibration direction, and the voice coil is disposed within the magnetic gap.

[0008] The frame includes a main body extending along the length direction and connecting portions located 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 portions.

[0009] In one embodiment, the main body includes a main body segment and a reinforcing segment. The main body segment includes two main body plates spaced apart along the width direction, both of which are connected to the diaphragm. The reinforcing segment includes an arc-shaped bending plate that 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 portion.

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

[0011] In one embodiment, each of the two clamping members includes two clamping plates spaced apart along the width direction. The two clamping plates are used to clamp the voice coil. Each clamping plate is connected to the main body segment. One end of one clamping plate of each clamping member away from the main body segment is bent away from the voice coil to form a connecting piece. The two connecting pieces are respectively disposed on both sides of the voice coil along the width direction. The centering support is connected to the connecting piece.

[0012] In one embodiment, each of the clamping plates includes a reinforcing plate, a connecting plate, and a clamping plate connected sequentially along the vibration direction. The two clamping plates of each clamping member are used to clamp the voice coil. One end of the clamping plate of each clamping member away from the main body is bent in a direction 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. Each reinforcing plate has an inwardly protruding reinforcing protrusion.

[0013] In one embodiment, the outer casing includes a first casing and a second casing connected to each other, the sound-generating unit further includes a waterproof ring, the waterproof ring is connected to the side of the first casing away from the magnetic circuit system, the waterproof ring is disposed around the diaphragm, the first casing, the waterproof ring and the diaphragm are integrally injection molded, and the magnetic circuit system is connected to the second casing.

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

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

[0016] And / or, the waterproof ring has a first protrusion that protrudes toward the first housing and is embedded in the first housing;

[0017] And / or, the first housing has a second protrusion that protrudes toward the waterproof ring and is embedded within the waterproof ring.

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

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

[0020] In one embodiment, both magnetic components extend in a direction away from the voice coil to form lateral extensions, and the sidewall has a receiving hole for accommodating the extensions;

[0021] And / or, the sound-generating unit further includes a steel plate, the steel plate being made of non-magnetic steel, the steel plate being disposed inside the outer shell, and the end of each magnetic component facing away from the support plate being connected to the steel plate;

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

[0023] In one embodiment, the two magnetic components protrude along the vibration direction toward the direction away from the support plate on the side near the magnetic gap to form a protruding structural portion;

[0024] And / or, each of the magnetic components includes a first magnet, a second magnet, and a third magnet arranged sequentially along the vibration direction, the third magnet being disposed on the support plate, the first magnet and the third magnet being magnetized in a direction perpendicular to the vibration direction and in opposite directions; the second magnet being magnetized along the vibration direction, and the polarity of the second magnet's magnetic pole facing the first magnet being the same as the polarity of the first magnet's magnetic pole near the magnetic gap; the support plate is made of a non-magnetic material.

[0025] And / or, the support plate has a clearance hole facing the magnetic gap; the sound-generating unit also includes a cover, the cover is located on the side of the support plate away from the voice coil, and the cover covers the clearance 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 portion is connected to the short axis side.

[0027] In one embodiment, the diaphragm includes a folded ring and a reinforcing portion disposed in the central region of the folded ring, the folded ring and the reinforcing portion being integrally injection molded, the folded ring being connected to the outer shell, and the reinforcing portion being connected to the main body portion;

[0028] The reinforcing part has multiple vent holes, and the sound-generating unit also includes a waterproof and breathable membrane, which covers the vent holes.

[0029] Alternatively, at least a portion of the reinforcing part is made of breathable material, and the sound-generating monomer further includes a waterproof and breathable membrane covering the breathable material;

[0030] And / or, the reinforcing part is provided with a reinforcing rib, which is located in the central region of the reinforcing part and extends along the length direction.

[0031] In one embodiment, the centering support includes two parts, which are disposed at both ends of the sound-generating unit along the length direction. Each centering support includes a first fixing part, a spring arm part, and a second fixing part. The first fixing part is disposed on the outer shell, and the second fixing part is connected to the connecting part. The two ends of the spring arm part are respectively connected to the first fixing part and the second fixing part. The two centering supports are connected through a conductive connecting part, which is also provided with an external solder 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 that respectively connect the two centering support plates and an external connection portion that connects the two electrical connection portions. The external connection portion is provided with the external solder pad. The electrical connection portion is made of plastic material and can be bent toward the side closer to the support plate so that the side of the external connection portion away from the external solder pad abuts against the support plate.

[0033] And / or, the conductive connection part and the centering support piece are integrally formed parts.

[0034] The present invention also proposes an electronic device comprising the aforementioned sound-generating unit.

[0035] In the technical solution of this invention, the voice coil is connected to the diaphragm via a skeleton, thereby enabling the skeleton to transmit the driving force generated by the voice coil to the diaphragm, which in turn drives the diaphragm to vibrate. By connecting the centering support to the skeleton, the probability of the voice coil becoming polarized is reduced, thus improving the vibration stability of the voice coil. The skeleton extending along the length direction is connected to the diaphragm, thereby improving the structural strength at the connection between the diaphragm and the skeleton, thereby reducing the deformation of this part of the structure during vibration, thus avoiding the split vibration of the diaphragm reinforcement at high frequencies, and improving the acoustic performance of the loudspeaker. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of an embodiment of the conductive connection portion of the sound-generating unit provided by the present invention without bending.

[0038] Figure 2 is a structural schematic diagram from another perspective of an embodiment of the sound-generating unit provided by the present invention in which the conductive connection portion is not bent.

[0039] Figure 3 is a schematic diagram of an embodiment of bending the conductive connection part of the sound-generating unit provided by the present invention.

[0040] Figure 4 is an exploded structural diagram of an embodiment of the sound-generating monomer provided by the present invention;

[0041] Figure 5 is a front view structural schematic diagram of an embodiment of the sound-generating unit provided by the present invention;

[0042] Figure 6 is a schematic cross-sectional view of the structure at point AA in Figure 5;

[0043] Figure 7 is a cross-sectional structural schematic diagram of an embodiment of the sound-generating unit structure provided by the present invention;

[0044] Figure 8 is a magnified view of part A in Figure 7;

[0045] Figure 9 is a schematic diagram of an embodiment of the sound-generating monomer structure provided by the present invention;

[0046] Figure 10 is a front view structural diagram of an embodiment of the skeleton provided by the present invention;

[0047] Figure 11 is a side view of an embodiment of the skeleton provided by the present invention;

[0048] Figure 12 is a top view of an embodiment of the skeleton provided by the present invention;

[0049] Figure 13 is a schematic diagram of a skeleton according to an embodiment of the present invention;

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

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

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

[0053] Figure 17 is a front view structural schematic diagram of another embodiment of the sound-generating unit provided by the present invention;

[0054] Figure 18 is a schematic cross-sectional view of the structure at BB in Figure 17;

[0055] Figure 19 is a schematic diagram of an embodiment of the sound-generating unit provided by the present invention disposed inside the housing of an electronic device.

[0056] Reference numerals in the attached diagrams: 100. Sound-generating unit; 1. Outer shell; 11. First shell; 12. Second shell; 13. Annular main body; 14. Side wall; 141. Receiving hole; 15. Center; 16. End; 2. Magnetic circuit system; 21. Support plate; 211. Clearance hole; 212. Base plate; 213. Enclosure plate; 22. Magnetic assembly; 221. First magnet; 2211. Protruding structure; 222. Second magnet; 223. Third magnet; 224. Fourth magnet; 225. Magnetic gap; 226. Lateral extension; 3. Vibration system; 31. Diaphragm; 311. Surround; 312. Reinforcing part; 3121. Vent hole; 32. Voice coil; 32A. Flat voice coil; 321. First long axis section; 322. Second long axis section; 33. Centering support; 331. First 332. Fixing part; 333. Spring arm part; 333. Second fixing part; 3331. Inner solder pad; 334. Conductive connection part; 3341. Electrical connection part; 3342. Outer connection part; 33421. Outer solder pad; 34. Frame; 341. Main body part; 3411. Main body section; 34111. Main body plate; 3412. Reinforcing section; 34121. Arc-shaped bending plate; 34122. Communicating cavity; 342. Connecting part; 3421. Clamping part; 34211. Clamping plate; 34212. Reinforcing plate; 34213. Connecting plate; 34214. Clamping plate; 34215. Connecting piece; 34216. Reinforcing protrusion; 4. Waterproof ring; 41. Groove; 42. First protrusion; 5. Covering part; 51. Release film; 6. Steel plate; 7. Waterproof and breathable membrane; 200. The casing of electronic devices.

[0057] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0059] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0060] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0061] With the development of thinner and smarter smart wearable products, more and more electronic components are being added to smart wearable devices to meet the needs of smart development. As the number of electronic components in smart wearable devices gradually increases, the space left for speakers is gradually decreasing. This makes it difficult to improve the acoustic performance of speakers by increasing their size. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve their acoustic performance and thus failing to meet the needs of users.

[0062] Therefore, it is necessary to propose a sound-generating unit and electronic device aimed at solving the technical problem of how to improve the acoustic performance of loudspeakers.

[0063] Please refer to Figures 1 to 3. In one embodiment of the present invention, the length-to-width ratio of the sound-generating unit 100 is greater than 2:1. The sound-generating unit 100 includes a shell 1, a magnetic circuit system 2, and a vibration system 3. The magnetic circuit system 2 is connected to the shell 1 and includes a support plate 21 and two magnetic components 22 spaced apart on the support plate 21, forming a magnetic gap 225 between the two magnetic components 22. The vibration system 3 is connected to the shell 1 and includes a diaphragm 31, a frame 34, a voice coil 32, and a centering support plate 33 arranged along the vibration direction. The axial direction of the voice coil 32 is perpendicular to the vibration direction, and the voice coil 32 is disposed in the magnetic gap 225. The frame 34 includes a main body 341 extending along the length direction and connecting portions 342 disposed at both ends of the main body 341 along the length direction. The main body 341 is connected to the diaphragm 31, and the voice coil 32 and the centering support plate 33 are both connected to the connecting portions 342.

[0064] The sound-generating unit 100 of the present invention can be a loudspeaker unit, and can be applied in the sound-generating module of an electronic device, such as a computer, mobile phone, or smart wearable device. This embodiment uses a loudspeaker unit as an example for illustration.

[0065] The voice coil 32 is connected to the diaphragm 31 via a frame 34, allowing the frame 34 to transmit the driving force generated by the voice coil 32 to the diaphragm 31. This allows the energized voice coil 32 to drive the diaphragm 31 to vibrate via the frame 34. The diaphragm 31 vibrates up and down, thus inducing sound production and completing the energy conversion between electroacoustic and radiofrequency signals. Connecting the centering support 33 to the frame 34 reduces the probability of polarization in the voice coil 32, improving its vibration stability. The frame 34, extending along the length of the main body 341, connects to the diaphragm 31, increasing the structural strength at the connection point and reducing deformation during vibration. This prevents the high-frequency segmentation vibration of the reinforcing part 312 of the diaphragm 31, enabling the speaker to provide clearer and more standard sound quality and improving its acoustic performance. It should be noted that the voice coil 32 is a flat voice coil 32A formed by winding wire. Furthermore, the vibration direction is the up-down direction as shown in Figure 1, and the length direction is the left-right direction as shown in Figure 1.

[0066] In this embodiment, the sound-generating unit 100 has a narrow and elongated shape. It should be noted that the sound-generating unit 100 has a height (thickness) along the vibration direction, a length along the length direction, and a width along the width direction, with the vibration direction, length direction, and width direction being perpendicular to each other. The length-to-width ratio of the sound-generating unit 100 is greater than 2:1, which allows for better adaptation to the reserved space in microelectronic devices.

[0067] It should be noted that the aspect ratio of the sound-generating unit 100 refers to the ratio of the length dimension of the sound-generating unit 100 in the length direction to the width dimension of the sound-generating unit 100 in the width direction, wherein the vibration direction, the width direction, and the length direction are perpendicular to each other. The width direction is the front-to-back direction shown in Figure 1.

[0068] Referring to Figure 10, in one embodiment, the main body 341 includes a main body segment 3411 and a reinforcing 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 reinforcing segment 3412. Connecting portions 342 are provided at both ends of the main body segment 3411 along its length. By providing the reinforcing segment 3412, the overall structural strength of the main body 341 is enhanced, and the stiffness of the cross-section of the main body 341 is improved. The diaphragm 31 includes a folded ring 311 and a reinforcing portion 312 provided in the central region of the folded ring 311. The main body segment 3411 is connected to the reinforcing portion 312. Since the reinforcing segment 3412 enhances the overall structural strength of the main body 341 and improves the ability of the reinforcing portion 312 to resist deformation, the split vibration of the reinforcing portion 312 of the diaphragm 31 during high-frequency vibration is avoided, enabling the loudspeaker to provide clearer and more standard sound quality and improve the acoustic performance of the loudspeaker.

[0069] Referring to Figures 10 and 11, in one embodiment, the connecting portion 342 includes two clamping members 3421, which are respectively disposed at both ends of the main body portion 341 along its length. Both clamping members 3421 are used to clamp the voice coil 32, and both are connected to the centering support 33. The voice coil 32 is a flat voice coil 32A. The two clamping members 3421 clamp the flat voice coil 32A at both ends along its length, thereby fixing 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 members 3421. It should also be noted that both clamping members 3421 are clamped on 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 unit 100. Alternatively, when the width is fixed, the sound-generating 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.

[0070] According to one embodiment of the present invention, the connecting part 342 includes a clamp that extends along the length direction. The clamp includes two clamping plates 34211 that are spaced apart along the width direction. The two clamping plates 34211 clamp the flat voice coil 32A. The flat voice coil 32A can also be clamped by one clamp. The clamp extends along the length direction, which ensures the reliability of the clamp clamping of the flat voice coil 32A.

[0071] Please refer to Figures 11 to 13. In one embodiment, each of the two clamping members 3421 includes two clamping plates 34211 spaced apart along the width direction, with the width direction 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 segment 3411. One end of one clamping plate 34211 of each clamping member 3421 is bent away from the main body segment 3411 in a direction away from the voice coil 32 to form a connecting piece 34215. The two connecting pieces 34215 are respectively disposed on both sides of the voice coil 32 along the width direction. The centering support piece 33 is connected to the connecting piece 34215. The flat voice coil 32A is held at both ends along its length, with one end clamped by two clamping plates 34211 of a clamping member 3421, and the other end clamped by two clamping plates 34211 of another clamping member 3421. Connecting pieces 34215 are provided to connect to the centering support 33. These two connecting pieces 34215 are respectively positioned on both sides of the flat voice coil 32A along its width to balance the vibration state of the flat voice coil 32A, improve its vibration stability, and reduce the probability of polarization. It should be noted that both connecting pieces 34215 are bonded to the centering support 33.

[0072] 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 connected sequentially 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 the clamping plate 34214 of each clamping member 3421 away from the main body segment 3411 is bent in a direction 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 an inwardly protruding reinforcing protrusion 34216. Taking a clamping component 3421 as an example, the distance between the two reinforcing plates 34212 of the clamping component 3421 is greater than the distance between the clamping plates 34214. This is to prevent the inwardly protruding reinforcing protrusions 34216 on the reinforcing plates 34212 from interfering with the voice coil 32, and also to improve the structural strength of the clamping plate 34211. One reinforcing plate 34212 forms a reinforcing protrusion 34216 towards the other reinforcing plate 34212, i.e., protruding inward, avoiding interference with other structural components caused by the outward protrusions of the reinforcing plates 34212. By setting the reinforcing protrusions 34216 on the reinforcing plates 34212, the structural strength of the clamping plate 34211 is effectively improved, ensuring 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 component 3421 are spaced apart to form interconnected airflow channels, effectively improving the smoothness of airflow.

[0073] Referring to Figures 11 and 13, in one embodiment, the main body segment 3411 includes two main body plates 34111 spaced apart along the width direction, and the reinforcing segment 3412 includes an arc-shaped bending plate 34121. The arc-shaped bending plate 34121 is bent away from the diaphragm 31. The two main body plates 34111 are connected by the arc-shaped bending plate 34121, and both ends of the two main body plates 34111 along the length direction are connected to the connecting portion 342. By providing the arc-shaped bending plate 34121, the cross-sectional stiffness of the main body segment 341 is improved, thereby improving the deformation resistance of the reinforcing portion 312 connected to it. This avoids the split 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 segment 3411 is bonded to the reinforcing portion 312.

[0074] Referring to Figures 4 to 6, in one embodiment, the outer shell 1 includes a first shell 11 and a second shell 12 connected to each other. The diaphragm 31 is connected to the first shell 11, and the magnetic circuit system 2 is connected to the second shell 12. The first shell 11 and the second shell 12 can be bonded together or snap-fitted together; there is no limitation on this. The magnetic circuit system 2 can be connected to the second shell 12 via a magnetic component 22 or a support plate 21; there is no limitation on this either.

[0075] Referring to Figures 6 and 7, in one embodiment, the sound-generating unit 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, and surrounds the diaphragm 31. The first housing 11, the waterproof ring 4, and the diaphragm 31 are integrally injection molded. This 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 unit 100. It should be noted that the waterproof ring 4 is made of a waterproof material.

[0076] Referring to Figures 7 and 8, in one embodiment, a groove 41 is provided on the inner side of the waterproof ring 4, extending circumferentially along the waterproof ring 4. By providing the groove 41 on the inner side of the waterproof ring 4, the waterproof ring 4 is compressed when it is assembled and sealed with the whole machine. The groove 41 guides the waterproof ring 4 to tilt inward, preventing it from turning outward and thus avoiding waterproofing failure. It should be noted that the groove 41 is located at the connection between the waterproof ring 4 and the diaphragm 31.

[0077] In one embodiment, the outer surface of the waterproof ring 4 extends obliquely from one end near the first housing 11 to the end away from the first housing 11 in a direction close to the diaphragm 31. When the waterproof ring 4 is assembled and sealed with the whole machine, because the waterproof ring 4 is obliquely set in a direction close to the diaphragm 31, the waterproof ring 4 will be squeezed and tilt inward, that is, tilt in a direction close to the diaphragm 31, to prevent the waterproof ring 4 from turning outward, thereby preventing waterproof failure.

[0078] Please refer to Figures 7 and 8. In one embodiment, the waterproof ring 4 has a first protrusion 42 that protrudes toward the first housing 11 and is embedded in the first housing 11. By providing the first protrusion 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.

[0079] According to one embodiment of the present invention, the first housing 11 has a second protrusion that protrudes toward the waterproof ring 4 and is embedded in the waterproof ring 4; by providing the second protrusion embedded in the waterproof ring 4, the connection strength and connection reliability between the waterproof ring 4 and the first housing 11 are effectively improved.

[0080] Referring to Figure 17, in one embodiment, the second housing 12 is made of metal and is welded to the support plate 21. The use of metal for the second housing 12 and its welding to the support plate 21 effectively enhances the strength of the sound-generating unit 100, making it less likely for water pressure to cause deformation of the product when the sound-generating unit 100 is assembled with the whole machine.

[0081] In one embodiment, the outer casing 1 is made of metal and is injection molded from metal powder. The outer casing 1 is made entirely of metal, which effectively enhances the strength of the sound-generating unit 100, making it less likely for water pressure to cause deformation of the product when the sound-generating unit 100 is assembled with the whole machine.

[0082] Referring to Figures 17 and 18, in one embodiment, the housing 1 includes an annular main body 13 and a sidewall 14 connected to the annular main body 13. A diaphragm 31 and a magnetic circuit system 2 are respectively connected to the annular main body 13 and the sidewall 14. The diaphragm 31 is connected to the annular main body 13, and the support plate 21 is connected to the sidewall 14. The magnetic assembly 22 is disposed on the support plate 21, thereby restricting the movement of the magnetic assembly 22 relative to the sidewall 14.

[0083] Referring to Figure 6, in one embodiment, both magnetic components 22 extend outward in a direction away from the voice coil 32 to form lateral extensions 226, and the side wall 14 is provided with receiving holes 141 to accommodate the extensions; by providing receiving holes 141 on the side wall 14, each magnetic component 22 can extend outward to form a lateral extension 226, thereby increasing the volume of each magnetic component 22, improving the magnetic field strength, and thus improving the acoustic performance of the loudspeaker.

[0084] Referring to Figure 18, in one embodiment, the sound-generating unit 100 further includes a steel plate 6. The steel plate 6 is made of non-magnetic steel and is disposed inside the outer shell 1. The end of each magnetic component 22 facing away from the support plate 21 is connected to the steel plate 6. By setting the steel plate 6, the area of ​​the structural components connected to the magnetic components 22 is increased, thereby improving the connection strength and reliability of the magnetic components 22. The steel plate 6 is made of non-magnetic steel so that the magnetic lines of force of the first magnet 221 can pass through the flat voice coil 32A more in a direction perpendicular to the vibration direction, avoiding the dispersion of magnetic lines of force and ensuring the driving force of the flat voice coil 32A.

[0085] Furthermore, the steel plate 6 is an annular plate, and in the vibration direction along the vibration system 3, the steel plate 6 is at least partially positioned opposite to the deformed portion of the folded ring 311. Thus, when the sound-generating unit 100 is subjected to water pressure from the front, the steel plate 6 can support the folded ring 311 and the reinforcing part 312, avoiding the risk of diaphragm 31 cracking and improving the reliability of the connection between the folded ring 311, the reinforcing part 312, and the first housing 11.

[0086] Referring to Figure 17, in one embodiment, the sidewall 14 is welded to the support plate 21. By welding the sidewall 14 to the support plate 21, the strength of the sound-generating unit 100 is effectively enhanced, making it less likely for water pressure to cause deformation of the product when the sound-generating unit 100 is assembled with the whole machine.

[0087] Referring to Figure 6, in one embodiment, the two magnetic components 22 protrude along the vibration direction away from the support plate 21 on the side near the magnetic gap 225 to form a protruding structure 2211; by providing the protruding structure 2211, the volume of the two magnetic components 22 is increased, the magnetic induction intensity is improved, and the magnetic field region of the flat voice coil 32A is further expanded, so that the driving force factor of the sound-generating unit 100 can be symmetrical relative to the static equilibrium position.

[0088] Referring to Figures 2, 14, and 15, in one embodiment, each magnetic assembly 22 includes a first magnet 221, a second magnet 222, and a third magnet 223 arranged sequentially along the vibration direction. The third magnet 223 is disposed on the support plate 21. The first magnet 221 and the third magnet 223 are both magnetized in a direction perpendicular to the vibration direction (i.e., the width direction) but in opposite directions. The second magnet 222 is magnetized along the vibration direction, and the polarity of the second magnet 222 toward the first magnet 221 is the same as that of the first magnet 221 near the magnetic gap 225. The polarities of the magnetic poles on both sides are the same, and the support plate 21 is made of non-magnetic material. In this embodiment, the first magnet 221 and the third magnet 223 are magnetized in a direction perpendicular to the vibration direction and in opposite directions. The second magnet 222 is magnetized along the vibration direction, and 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 near the magnetic gap 225. This allows the magnetic assembly 22 to form a magnetic field enhancement side facing the magnetic gap 225, thereby improving the magnetic field driving force and enhancing the acoustic performance of the speaker. Taking the first magnet 221 being magnetized forward as an example, the second magnet 222, located in front of the magnetic gap 225, is magnetized downward, and the second magnet 222, located behind the magnetic gap 225, is magnetized upward. The third magnet 223 is magnetized backward, causing the magnetic assembly 22 to face the magnetic gap 225 and form a magnetic field enhancement side. Furthermore, the polarities of the magnetic poles of the two first magnets 221 near the magnetic gap 225 are opposite, allowing the magnetic lines of force of the two magnetic assemblies 22 to form a complete closed loop, thereby increasing 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 the magnetic lines of force of the third magnet 223 can pass more through the flat voice coil 32A in a direction perpendicular to the vibration direction, avoiding magnetic line dispersion and ensuring the driving force of the flat voice coil 32A.

[0089] Referring to Figures 2 and 16, according to an embodiment of the present invention, the magnetic assembly 22 further includes a fourth magnet 224. The fourth magnet 224 is disposed on the 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. 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 near the magnetic gap 225, so that the magnetic assembly 22 can form a magnetic field enhancement side facing the magnetic gap 225. Furthermore, the polarities of the magnetic poles of the two first magnets 221 near the magnetic gap 225 are opposite. In this embodiment, the first magnet 221 and the third magnet 223 are both magnetized in a direction perpendicular to the vibration direction but in opposite directions, while the second magnet 222 and the fourth magnet 224 are both magnetized in the vibration direction. The polarity of the second magnet 222 facing the first magnet 221 is the same as the polarity of the first magnet 221 near the magnetic gap 225, and the polarity of the fourth magnet 224 facing the third magnet 223 is the same as the polarity of the third magnet 223 near the magnetic gap 225. This allows the magnetic assembly 22 to form a magnetic field enhancement side facing the magnetic gap 225. Furthermore, the polarities of the two first magnets 221 near the magnetic gap 225 are opposite, causing the magnetic lines of force of the two magnetic assemblies 22 to form a ring, thereby increasing the magnetic field driving force and improving the acoustic performance of the speaker. Taking the first magnet 221 being magnetized forward as an example, the second magnet 222, located in front of the magnetic gap 225, is magnetized downward, and the second magnet 222, located behind the magnetic gap 225, is magnetized upward. The third magnet 223 is magnetized backward, and the fourth magnet 224, located in front of the magnetic gap 225, is magnetized upward, and the fourth magnet 224, located behind the magnetic gap 225, is magnetized downward. This causes the magnetic assembly 22 to face the magnetic gap 225, forming a magnetic field enhancement side. Furthermore, the polarities of the two first magnets 221 near the magnetic gap 225 are opposite, allowing the magnetic lines of force of the two magnetic assemblies 22 to form a complete closed loop, thereby increasing 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 magnetically conductive material. By setting the support plate 21 to correct the magnetic lines of force of the fourth magnet 224, more magnetic lines of force can pass through the flat voice coil 32A, thereby enhancing the induction intensity of the flat voice coil 32A and improving the acoustic performance of the speaker.

[0090] Please refer to Figures 7 and 9. According to an embodiment of the present invention, the flat voice coil 32A includes a first long axis segment 321 and a second long axis segment 322 arranged sequentially at intervals along the vibration direction. Both the first long axis segment 321 and the second long axis segment 322 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 segment 321 along the vibration direction. This arrangement increases the number of magnetic lines of force passing through the first long axis segment 321, improves the driving force of the flat voice coil 32A, and enhances the acoustic performance of the sound-generating unit 100.

[0091] Please refer to Figure 16. In one embodiment, the thickness of the second magnet 222 along the vibration direction is not less than 80% of the height of the second long axis segment 322 along the vibration direction. This arrangement increases the number of magnetic lines of force passing through the second long axis segment 322, improves the driving force of the flat voice coil 32A, and enhances the acoustic performance of the sound-generating unit 100.

[0092] 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; this arrangement increases the number of magnetic lines of force passing through the first long axis segment 321 and the second long axis segment 322, improves the driving force of the flat voice coil 32A, and enhances the acoustic performance of the sound-generating unit 100.

[0093] 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 along the vibration direction. This arrangement increases the number of magnetic field lines passing through the support plate 21, thereby increasing the number of magnetic field 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-generating unit 100.

[0094] In one embodiment, the support plate 21 has a clearance hole 211 facing the magnetic gap 225; the sound-generating unit 100 also includes a cover 5, which is located on the side of the support plate 21 away from the voice coil 32, and covers the clearance hole 211; by providing the clearance hole 211, a larger vibration space is provided for the flat voice coil 32A. The cover 5, which covers the clearance hole 211, serves to adjust the amplitude symmetry of the sound-generating unit 100. It should be noted that the cover 5 can be a cover plate or a nylon mesh.

[0095] In one embodiment, the voice coil 32 has two long axis sides extending along the length direction and a short axis side connecting the two long axis sides, and the connecting portion 342 is connected to the short axis side. The connecting portion 342 is located outside the magnetic gap 225, so the connecting portion 342 does not occupy the width of the magnetic gap 225, reducing the width of the sound generating unit 100. Alternatively, when the width is fixed, the sound generating 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.

[0096] Referring to Figures 6 and 7, in one embodiment, the diaphragm 31 includes a folded ring 311 and a reinforcing portion 312 disposed in the central region of the folded ring 311. The folded ring 311 and the reinforcing portion 312 are integrally injection molded. The folded ring 311 is connected to the outer shell 1, and the reinforcing portion 312 is connected to the main body 341. The reinforcing portion 312 has multiple vent holes 3121. The sound-generating unit 100 also includes a waterproof and breathable membrane 7, which covers the vent holes 3121. By providing multiple vent holes 3121 on the reinforcing portion 312, it is beneficial to balance the air pressure inside and outside the sound-generating unit 100. By providing the waterproof and breathable membrane 7 covering the vent holes 3121, the waterproof performance of the sound-generating unit 100 is effectively improved while ensuring the balance of air pressure inside and outside the sound-generating unit 100. It should be noted that the curved bending plate 34121 forms a connecting cavity 34122 with openings at both ends. The vent 3121 is connected to the connecting cavity 34122, thus ensuring the balance of air pressure inside and outside the sound-generating unit 100.

[0097] According to another embodiment of the present invention, at least a portion of the reinforcing part 312 is made of a breathable material, and the sound-generating unit 100 further includes a waterproof and breathable membrane 7 covering the breathable material. By making at least a portion of the reinforcing part 312 a breathable material, it is beneficial to balance the air pressure inside and outside the sound-generating unit 100. By providing the waterproof and breathable membrane 7 covering the breathable material, the waterproof performance of the sound-generating unit 100 is effectively improved while ensuring the balance of air pressure inside and outside the sound-generating unit 100. It should be noted that the breathable material can be an organic aerogel, or a foamed metal, etc.

[0098] According to one embodiment of the present invention, the reinforcing part 312 is provided with reinforcing ribs. The reinforcing ribs are located in the central region of the reinforcing part 312 and extend along the length direction. By providing reinforcing ribs, the structure of the reinforcing part 312 is strengthened, thereby effectively shifting the resonance of the reinforcing part 312 to a higher frequency.

[0099] Referring to Figure 4, in one embodiment, the centering support 33 includes two parts, which are disposed at both ends of the sound-generating unit 100 along its length. Each centering support 33 includes a first fixing part 331, a spring arm part 332, and a second fixing part 333. The first fixing part 331 is disposed on the outer shell 1, and the second fixing part 333 is connected to the connecting part 342. The two ends of the spring arm part 332 are respectively connected to the first fixing part 331 and the second fixing part 333. The two centering supports 33 are connected through a conductive connection part 334, which is also provided with an external solder pad 33421 that can be electrically connected to an external circuit. By providing the conductive connection part 334, the two centering supports 33 can be electrically connected, thereby facilitating the introduction of external circuit current into the flat voice coil 32A. It should be noted that the second fixing part 333 is provided with an internal solder pad 3331, and the lead of the flat voice coil 32A is electrically connected to the internal solder pad 3331.

[0100] According to one embodiment of the present invention, the conductive connection part 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.

[0101] Referring to Figures 4 and 5, in one embodiment, the support plate 21 includes a base plate 212 and a surrounding plate 213. The magnetic assembly 22 is disposed on the base plate 212, and the surrounding plate 213 is connected to the side wall 14. A first fixing part 331 is sandwiched between the surrounding plate 213 and the side wall 14. The first fixing part 331 is sandwiched between the surrounding plate 213 and the side wall 14, thereby effectively fixing the first fixing part 331 and improving the vibration stability of the flat voice coil 32A.

[0102] Referring to Figures 1 to 3, in one embodiment, the conductive connection portion 334 is located on the outer side of the housing 1. The conductive connection portion 334 includes two electrical connection portions 3341 that are respectively connected to two centering support plates 33, and an outer connection portion 3342 that connects the two electrical connection portions 3341. The outer connection portion 3342 is provided with an external solder pad 33421. The electrical connection portion 3341 is made of a plastic material and can be bent towards the side closer to the support plate 21 so that the side of the outer connection portion 3342 away from the external solder pad 33421 abuts against the support plate 21. The fact that the electrical connection portion 3341 is made of a plastic material allows it to be bent. By abutting the side of the outer connection portion 3342 away from the external solder pad 33421 against the support plate 21, it is convenient to assemble the sound-generating unit 100 with the whole machine.

[0103] According to one embodiment of the present invention, the cover 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 opposite to the voice coil 32, and the other side of the double-sided adhesive layer is used to bond the side of the external connecting part 3342 opposite to the external solder pad 33421, so that the electrical connecting part 3341 can remain in a bent state, thereby facilitating the assembly of the sound-generating unit 100 with the whole machine. It should be noted that a release diaphragm 51 extending into the clearance hole 211 is provided on the side of the double-sided adhesive layer facing the magnetic gap 225. The release diaphragm 51 is used to contact the voice coil 32. By providing the release diaphragm 51, the vibrating voice coil 32 is prevented from sticking to the double-sided adhesive layer.

[0104] In one embodiment, the aspect ratio of the inner diameter of the flat voice coil 32A is no greater than 20:1; controlling the aspect ratio of the inner diameter of the flat voice coil 32A to less than or equal to 20:1 is to facilitate 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 coil of the flat voice coil 32A along the longitudinal direction to the width dimension of the inner coil of the flat voice coil 32A along the vibration direction.

[0105] In one embodiment, the aspect ratio of the sound-generating unit 100 is no greater than 10:1, thereby better adapting to the installation needs of some existing narrow installation environments.

[0106] Referring 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. The central portion 15 protrudes away from the flat voice coil 32A. It should be noted that the outer surface of the central portion 15 near the diaphragm 31 protrudes away from the flat voice coil 32A. The protrusion of the central portion 15 away from the flat voice coil 32A is to better adapt to the shape of the electronic device housing 200, so that the housing 1 can extend along the electronic device housing 200 and achieve a sealed contact between the housing 1 and the electronic device housing 200. The protrusion of the central portion 15 away from the flat voice coil 32A makes the housing 1 have a curved or approximately curved shape to adapt to the shape of the electronic device housing 200, thereby improving the utilization rate of the internal space of the electronic device housing 200. In this embodiment, the shape of the diaphragm 31 is similar to that of the housing 1. By adapting the shape of the housing 1 to the shape of the housing 200 of the electronic device, a portion of the gap is used as the vibration space for the diaphragm 31. This increases the vibration space of the diaphragm 31 without increasing the installation space of the sound-generating unit 100, and also increases the volume of the front acoustic cavity of the sound-generating unit 100, 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-shaped structure, or the central part 15 can be a flat part and the end part 16 can be a flat part or a curved part, or the central part 15 can be a curved part and the end part 16 can be a flat part or a curved part.

[0107] The present invention also proposes an electronic device, which includes the aforementioned sound-emitting unit 100. The electronic device can be a computer, mobile phone, smart wearable device, etc. The specific structure of the sound-emitting unit 100 is as described in the above embodiments. Since the electronic device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0108] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sound-emitting monomer, characterized in that, The ratio of the length to the width of the sound-emitting unit is greater than 2:1, the width direction is perpendicular to the length direction, and the sound-emitting unit includes: shell; A magnetic circuit system connected to the outer casing, the magnetic circuit system including a support plate and two magnetic components spaced apart on the support plate, with a magnetic gap formed between the two magnetic components; A vibration system connected to the outer casing includes a diaphragm, a frame, a voice coil, and a centering support arranged along the vibration direction. The vibration direction is perpendicular to both the length and width directions. The axial direction of the voice coil is perpendicular to the vibration direction, and the voice coil is disposed within the magnetic gap. The frame includes a main body extending along the length direction and connecting portions located 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 portions.

2. The sound-generating unit as described in claim 1, characterized in that, The main body includes a main body segment and a reinforcing segment. The main body segment includes two main body plates spaced apart along the width direction. Both main body plates are connected to the diaphragm. The reinforcing segment includes an arc-shaped bending plate that bends away from the diaphragm. The two main body plates are connected by the arc-shaped bending plate. Both ends of the two main body plates along the length direction are connected to the connecting portion.

3. The sound-generating unit as described in claim 2, characterized in that, The connecting part includes two clamping members, which are respectively disposed at both ends of the main body along the length direction. Both clamping members are used to clamp the voice coil, and both clamping members are connected to the centering support.

4. The sound-generating unit as described in claim 3, characterized in that, Both clamping members include two clamping plates spaced apart along the width direction. The two clamping plates are used to clamp the voice coil. Each clamping plate is connected to the main body segment. One end of one clamping plate of each clamping member away from the main body segment is bent away from the voice coil to form a connecting piece. The two connecting pieces are respectively disposed on both sides of the voice coil along the width direction. The centering support is connected to the connecting piece.

5. The sound-generating unit as described in claim 4, characterized in that, Each clamping plate includes a reinforcing plate, a connecting plate, and a clamping plate connected sequentially along the vibration direction. The two clamping plates of each clamping member are used to clamp the voice coil. One end of the clamping plate of each clamping member away from the main body 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. Each reinforcing plate has an inwardly protruding reinforcing protrusion.

6. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The outer casing includes a first casing and a second casing connected to each other. The sound-generating unit also includes a waterproof ring. The waterproof ring is connected to the side of the first casing away from the magnetic circuit system. The waterproof ring surrounds the diaphragm. The first casing, the waterproof ring, and the diaphragm are integrally injection molded. The magnetic circuit system is connected to the second casing.

7. The sound-generating unit as described in claim 6, characterized in that, The inner side of the waterproof ring is provided with a groove, which extends along the circumference of the waterproof ring; And / or, the outer surface of the waterproof ring extends obliquely from the end near the first housing to the end away from the first housing in a direction close to the diaphragm; And / or, the waterproof ring has a first protrusion that protrudes toward the first housing and is embedded in the first housing; And / or, the first housing has a second protrusion that protrudes toward the waterproof ring and is embedded within the waterproof ring.

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

9. The sound-generating unit as described in claim 8, characterized in that, Both magnetic components extend in a direction away from the voice coil to form lateral extensions, and the sidewalls are provided with receiving holes to accommodate the extensions; And / or, the sound-generating unit further includes a steel plate, the steel plate being made of non-magnetic steel, the steel plate being disposed inside the outer shell, and the end of each magnetic component facing away from the support plate being connected to the steel plate; And / or, the sidewall is welded to the support plate.

10. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The two magnetic components protrude along the vibration direction away from the support plate on the side near the magnetic gap to form a protruding structural part; And / or, each of the magnetic components includes a first magnet, a second magnet, and a third magnet arranged sequentially along the vibration direction, the third magnet being disposed on the support plate, the first magnet and the third magnet being magnetized in a direction perpendicular to the vibration direction and in opposite directions; the second magnet being magnetized along the vibration direction, and the polarity of the second magnet's magnetic pole facing the first magnet being the same as the polarity of the first magnet's magnetic pole near the magnetic gap; the support plate is made of a non-magnetic material. And / or, the support plate has a clearance hole facing the magnetic gap; the sound-generating unit also includes a cover, the cover is located on the side of the support plate away from the voice coil, and the cover covers the clearance 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 portion is connected to the short axis side.

11. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The diaphragm includes a folded ring and a reinforcing portion disposed in the central region of the folded ring. The folded ring and the reinforcing portion are integrally injection molded. The folded ring is connected to the outer shell, and the reinforcing portion is connected to the main body. The reinforcing part has multiple vent holes, and the sound-generating unit also includes a waterproof and breathable membrane, which covers the vent holes. Alternatively, at least a portion of the reinforcing part is made of breathable material, and the sound-generating monomer further includes a waterproof and breathable membrane covering the breathable material; And / or, the reinforcing part is provided with a reinforcing rib, which is located in the central region of the reinforcing part and extends along the length direction.

12. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The centering support includes two parts, which are disposed at both ends of the sound-generating unit along the length direction. Each centering support includes a first fixing part, a spring arm part, and a second fixing part. The first fixing part is disposed on the outer shell, and the second fixing part is connected to the connecting part. The two ends of the spring arm part are respectively connected to the first fixing part and the second fixing part. The two centering supports are connected through a conductive connecting part, which is also provided with an external solder pad that can be electrically connected to an external circuit.

13. The sound-generating unit as described in claim 12, characterized in that, The conductive connection portion is located on the outside of the housing. The conductive connection portion includes two electrical connection portions that connect to the two centering support plates respectively, and an external connection portion that connects the two electrical connection portions. The external connection portion is provided with the external solder pad. The electrical connection portion is made of plastic material. The electrical connection portion can be bent toward the side closer to the support plate so that the side of the external connection portion away from the external solder pad abuts against the support plate. And / or, the conductive connection part and the centering support piece are integrally formed parts.

14. An electronic device, characterized in that, The electronic device includes a sound-generating unit as described in any one of claims 1 to 13.

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