Sound production device and electronic device

Abstract

The utility model discloses a sound production device and electronic equipment relates to electric sound transduction technical field, the box of this sound production device includes integrative box main body and installation department, and installation department has with the first end of box main body connection and the second end of extension towards box main body, to make the installation cavity of installation department, and form the cavity of intercommunication installation cavity between installation department and box main body, and the vibration system of loudspeaker includes diaphragm and the voice coil connected in diaphragm, and the outer periphery of diaphragm is connected with the first end, and the magnetic circuit system is connected to the second end, and with the side of diaphragm facing installation cavity opposite and interval, and the magnetic gap is equipped with the magnetic circuit system, and the one end of voice coil away from diaphragm is inserted in the magnetic gap. The utility model aims at the loudspeaker's basin frame is integrated on the box, and the sound production device can effectively avoid the loudspeaker vibration and the box collision and produce the abnormal sound when working, reduces the cost simultaneously, simplifies the assembly process, improves the sealing property and waterproof performance, avoids the air leakage phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic transduction technology, and in particular to a sound-generating device and an electronic device using the sound-generating device. Background Technology

[0002] In recent years, with the rapid development of the smart electronics field, consumer electronics products have ushered in a new wave of innovation. Sound-generating devices are important electroacoustic transducers in consumer electronics products, and they are widely used as speakers, earpieces, headphones, and other similar devices.

[0003] In related technologies, subwoofer structures typically fix the speaker driver to the enclosure with screws, and the enclosure and the speaker driver's frame are independent parts. Due to insufficient or weakened screw tightening force, abnormal noises can occur when the speaker is working. Furthermore, to avoid these noises, additional padding is usually used between the speaker driver's frame and the enclosure, which further increases costs and assembly steps. Utility Model Content

[0004] The main purpose of this utility model is to provide a sound-generating device and electronic device, which integrates the speaker basket into the cabinet, so that when the sound-generating device is working, it can effectively avoid the abnormal noise caused by the speaker vibrating and colliding with the cabinet. At the same time, it reduces costs, simplifies the assembly process, improves sealing and waterproof performance, and avoids air leakage, water leakage and other phenomena.

[0005] To achieve the above objectives, this utility model proposes a sound-generating device, which includes:

[0006] A housing, comprising an integrally formed housing body and a mounting portion, the mounting portion having a first end connected to the housing body and a second end extending toward the interior of the housing body, such that a mounting cavity is formed within the mounting portion, and a receptacle communicating with the mounting cavity is formed between the mounting portion and the housing body; and

[0007] A loudspeaker includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil connected to the diaphragm. The outer periphery of the diaphragm is connected to a first end. The magnetic circuit system is connected to a second end and is opposite to and spaced from the side of the diaphragm facing the mounting cavity. The magnetic circuit system has a magnetic gap. The end of the voice coil away from the diaphragm is inserted into the magnetic gap.

[0008] In one embodiment, the magnetic circuit system includes:

[0009] U-shaped iron, the U-shaped iron being connected to the second end, the U-shaped iron having a receiving groove communicating with the mounting cavity; and

[0010] A central magnetic part is disposed within the receiving groove and spaced apart from the side wall of the receiving groove to form the magnetic gap;

[0011] The U-shaped iron is integrally injection molded with the box body.

[0012] In one embodiment, the U-shaped iron includes a bottom wall and a side wall disposed around the periphery of the bottom wall. The side wall and the bottom wall enclose the receiving groove. The central magnetic part is disposed on the bottom wall and forms the magnetic gap at intervals with the side wall. The side wall and the second end are integrally injection molded.

[0013] The sidewall has a limiting protrusion on its outer side, and the second end has a limiting groove that cooperates with the limiting protrusion. The limiting protrusion is embedded in the limiting groove.

[0014] In one embodiment, the bottom wall protrudes towards the central magnet to form a boss, the central magnet is disposed on the boss, and a clearance groove communicating with the magnetic gap is formed between the boss and the side wall, the clearance groove being used to avoid the voice coil.

[0015] In one embodiment, the diaphragm includes a spherical top, a cone portion surrounding the spherical top, a folded ring portion surrounding the cone portion, and a fixing portion disposed outside the folded ring portion. The fixing portion is connected to the first end, and the voice coil is connected to the connection between the spherical top and the cone portion.

[0016] In one embodiment, the cone-shaped portion extends toward the mounting cavity, and from the top of the ball to the folded ring portion, the cross-sectional dimension of the cone-shaped portion gradually increases along the direction perpendicular to the vibration direction of the vibration system;

[0017] And / or, the top of the sphere protrudes toward the side away from the magnetic circuit system;

[0018] And / or, the folded ring protrudes toward the side away from the magnetic circuit system;

[0019] And / or, the sphere top, the cone basin, the folded ring, and the fixing part are integrally formed structures;

[0020] And / or, the connection between the top of the sphere and the cone portion is provided with a protrusion facing the voice coil, and the protrusion is connected to the end of the voice coil near the diaphragm; wherein, the protrusion includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals around the top of the sphere.

[0021] In one embodiment, the vibration system further includes a centering support plate, the inner side of which is connected to the outer wall of the voice coil, and a support platform is formed on the side of the mounting portion facing the mounting cavity. The support platform is located between the first end and the second end, and the outer side of the centering support plate is supported and connected to the support platform.

[0022] And / or, from the first end to the second end, the cross-sectional area of ​​the mounting portion along the vibration direction perpendicular to the vibration system gradually decreases;

[0023] And / or, the mounting portion is provided with a plurality of through holes, the plurality of through holes are spaced apart and located between the first end and the second end, the plurality of through holes connecting the cavity and the mounting cavity;

[0024] And / or, the main body of the box includes an upper shell and a lower shell that are connected by a mating joint. The upper shell and the mounting part are integrally formed. The upper shell and the lower shell are sealed together. The upper shell has a sealing groove at one end away from the mounting part. The lower shell has a sealing protrusion corresponding to the sealing groove. The sealing protrusion is accommodated and confined within the sealing groove. The lower shell also has a sealing outer edge around the sealing protrusion. The sealing outer edge is sealed and fitted to the outer wall of the upper shell.

[0025] In one embodiment, the first end protrudes in a direction away from the second end and forms a fixing platform, the outer periphery of the diaphragm is supported and fixed to the fixing platform, and the fixing platform and the end of the housing body adjacent to the mounting part form a mounting groove.

[0026] The sound-generating device also includes a mesh cover, the periphery of which is installed in the mounting groove and located on the side of the diaphragm facing away from the magnetic circuit system.

[0027] In one embodiment, the bottom of the mounting groove is provided with a plurality of spaced-apart support protrusions, and the mesh cover abuts against the plurality of support protrusions;

[0028] And / or, the main body of the box is provided with a plurality of fasteners near the first end, and the plurality of fasteners are connected to the mesh cover fasteners.

[0029] This utility model also proposes an electronic device, which includes the sound-generating device described above.

[0030] The sound-generating device of this utility model comprises an integrally formed cabinet body and a mounting part. The mounting part has a first end connected to the cabinet body and a second end extending into the cabinet body, thus forming a mounting cavity within the mounting part. A cavity communicating with the mounting cavity is formed between the mounting part and the cabinet body. The speaker is configured with a vibration system and a magnetic circuit system arranged opposite to each other. The outer periphery of the diaphragm of the vibration system is connected to the first end of the mounting part, and the magnetic circuit system is connected to the second end of the mounting part. The magnetic circuit system is opposite to and spaced from the side of the diaphragm facing the mounting cavity, and a magnetic gap is provided in the magnetic circuit system. The end of the voice coil away from the diaphragm is inserted into the magnetic gap. When current is passed through the voice coil, the voice coil vibrates within the magnetic gap of the magnetic circuit system, thereby driving the diaphragm to vibrate and produce sound. Since the cavity located between the mounting part and the main body of the enclosure is connected to the mounting cavity of the mounting part, the rear acoustic cavity volume of the sound-producing device is effectively increased, improving the acoustic performance of the sound-producing device. At the same time, the mounting part of the vibration system and magnetic circuit system of the speaker is integrated with the main body of the enclosure into a single structure, eliminating the speaker basket structure. This also avoids the abnormal noise caused by the speaker colliding with the enclosure during vibration, and avoids air leakage caused by insufficient sealing between the speaker and the enclosure. This effectively simplifies the structure, reduces costs and installation procedures, and effectively improves sealing and waterproof performance. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 A cross-sectional schematic diagram of an embodiment of the sound-generating device provided by this utility model;

[0033] Figure 2 A schematic diagram of the structure of an embodiment of the box provided by this utility model;

[0034] Figure 3 A cross-sectional schematic diagram of an embodiment of the housing provided by this utility model;

[0035] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the loudspeaker provided by this utility model.

[0036] Explanation of icon numbers:

[0037] 100. Sound-generating device; 1. Enclosure; 11. Enclosure body; 111. Upper shell; 1111. Sealing groove; 1112. Fastener; 112. Lower shell; 1121. Sealing protrusion; 1122. Sealing outer edge; 113. Cavity; 12. Mounting part; 121. Mounting cavity; 122. First end; 123. Second end; 1231. Limiting groove; 124. Support platform; 125. Through hole; 126. Fixing platform; 127. Mounting groove; 1271. Support protrusion; 2. Loudspeaker; 21. Vibration system; 211. Diaphragm; 2111. Dome; 2112. Cone; 2113. Surround; 2114. Fixing part; 2115. Protrusion; 212. Voice coil; 213. Centering support; 22. Magnetic circuit system; 221. U-shaped iron; 2211. Receiving groove; 2212. Bottom wall; 2213. Side wall; 2214. Limiting protrusion; 2215. Boss; 2216. Clearance groove; 222. Center magnet; 223. Magnetic gap.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0043] In recent years, with the rapid development of the smart electronics field, consumer electronics products have ushered in a new wave of innovation. Sound-generating devices are important electroacoustic transducers in consumer electronics products, and they are widely used as speakers, earpieces, headphones, and other similar devices.

[0044] In related technologies, subwoofers, bass speakers, mid-bass speakers, and full-range speakers all require mounting in an enclosure or an open-back enclosure during actual use. Furthermore, the speaker structure typically fixes the speaker driver to the enclosure with screws, and the enclosure and speaker frame are independent parts. Due to insufficient or weakened screw tightening force, the speaker's vibrations during operation can cause the frame to collide with the enclosure, producing noise. To prevent this noise, additional padding is usually added between the speaker frame and the enclosure to prevent collisions and noise. This further increases costs due to the added frame, bolts, and padding, and also increases the assembly process.

[0045] Based on the above concepts and problems, this utility model proposes a sound-generating device 100, which is applied in an electronic device. It is understood that the electronic device can be a speaker, mobile phone, headphones, smart wearable device, vehicle, etc., and is not limited thereto. In this embodiment, the sound-generating device 100 is applied in a vehicle as a vehicle-mounted speaker.

[0046] In this embodiment, the sound-generating device 100 integrates the enclosure body 11 and the mounting part 12 of the enclosure 1 into a single structure, that is, integrates the mounting part 12 onto the enclosure 1. The vibration system 21 and magnetic circuit system 22 of the speaker 2 are respectively mounted on the mounting part 12, eliminating the speaker 2's frame structure. This effectively avoids abnormal noise caused by collisions between the speaker 2 and the enclosure 1 during vibration. Furthermore, eliminating the speaker 2's frame structure also eliminates the need for pads or washers, simplifying the structure, reducing costs, and decreasing assembly steps and processes. Integrating the enclosure body 11 and the mounting part 12 into a single structure also effectively avoids air leakage caused by insufficient sealing between the speaker 2 and the enclosure 1, improving sealing and waterproof performance. It is understood that the sound-generating device 100 can be used in outdoor environments, such as vehicle exterior speakers, and is not limited thereto.

[0047] Please refer to the reference. Figures 1 to 4 As shown in the present invention, the sound-generating device 100 includes a housing 1 and a speaker 2. The housing 1 includes an integrally formed housing body 11 and a mounting portion 12. The mounting portion 12 has a first end 122 connected to the housing body 11 and a second end 123 extending toward the housing body 11, so that a mounting cavity 121 is formed in the mounting portion 12, and a cavity 113 communicating with the mounting cavity 121 is formed between the mounting portion 12 and the housing body 11. The speaker 2 includes a vibration system 21 and a magnetic circuit system 22. The vibration system 21 includes a diaphragm 211 and a voice coil 212 connected to the diaphragm 211. The outer periphery of the diaphragm 211 is connected to the first end 122. The magnetic circuit system 22 is connected to the second end 123 and is opposite to and spaced from the side of the diaphragm 211 facing the mounting cavity 121. The magnetic circuit system 22 is provided with a magnetic gap 223. The end of the voice coil 212 away from the diaphragm 211 is inserted into the magnetic gap 223.

[0048] In this embodiment, the enclosure 1 of the sound-generating device 100 is used to install, fix, and protect structures such as the speaker 2; that is, the enclosure 1 provides a mounting base for structures such as the speaker 2. It is understood that the enclosure 1 can be a box structure, a shell structure, or an enclosure structure with a cavity 113, etc., and is not limited here.

[0049] It should be noted that the loudspeaker 2 can be a miniature loudspeaker or a loudspeaker unit. The vibration system 21 and the magnetic circuit system 22 of the loudspeaker 2 are arranged opposite to each other, that is, the diaphragm 211 of the vibration system 21 and the magnetic circuit system 22 are arranged opposite to each other and spaced apart. The magnetic circuit system 22 is provided with a magnetic gap 223. One end of the voice coil 212 of the vibration system 21 is connected to the diaphragm 211, and the other end of the voice coil 212 is correspondingly arranged with the magnetic gap 223.

[0050] Understandably, the external shape of the speaker 2 can be circular or square, etc., and is not limited here. In order to install and fix the vibration system 21 and magnetic circuit system 22 of the speaker 2, the prior art usually uses a frame or housing to fix the vibration system and magnetic circuit system as a whole, that is, to assemble the speaker into a whole structure, and then fix the speaker to the cabinet with screws.

[0051] However, this assembly method suffers from problems. Insufficient or weakened screw tightening force between the enclosure and the speaker driver causes the speaker's vibrations to cause the frame to collide with the enclosure, resulting in rattling noise. Furthermore, to prevent this noise, an additional shim is typically added between the speaker driver's frame and the enclosure to prevent collisions and further increase costs due to the added components like the frame, bolts, and shims. The assembly process also involves more steps. Additionally, it can cause air leakage in the rear acoustic chamber through the gap between the frame and the enclosure.

[0052] In this embodiment, by eliminating the speaker 2's frame structure and integrating the cabinet body 11 and mounting part 12 of the enclosure 1 into a single structure (i.e., integrating the mounting part 12 onto the enclosure 1), the vibration system 21 and magnetic circuit system 22 of the speaker 2 are installed and fixed using the mounting part 12. Since the cabinet body 11 and mounting part 12 are integrally formed, this effectively avoids abnormal noise caused by collisions between the speaker 2 and the enclosure 1 during vibration. Furthermore, by eliminating the speaker 2's frame structure, structures such as pads or washers are eliminated, simplifying the structure, reducing costs, and decreasing assembly steps and processes. At the same time, integrating the cabinet body 11 and mounting part 12 into a single structure also effectively avoids air leakage caused by insufficient sealing between the speaker 2 and the enclosure 1, improving sealing and waterproof performance.

[0053] Understandably, the main body 11 of the enclosure 1 can be selected as an outer shell or an outer casing structure. A cavity 113 is formed inside the main body 11. To facilitate the outward radiation of sound by the speaker 2, a sound outlet is formed in the main body 11. In this embodiment, the main body 11 and the mounting part 12 are integrally formed structures, and the mounting part 12 has a first end 122 connected to the main body 11 and a second end 123 extending toward the inside of the main body 11. Optionally, the first end 122 of the mounting part 12 is connected to the sound outlet of the main body 11. The second end 123 of the mounting part 12 extends toward the cavity 113 and away from the sound outlet, so that a mounting cavity 121 is formed inside the mounting part 12, and a cavity 113 communicating with the mounting cavity 121 is formed between the mounting part 12 and the main body 11.

[0054] In this embodiment, the diaphragm 211 of the vibration system 21 is connected to the first end 122 of the mounting portion 12 and is positioned corresponding to the sound outlet. The magnetic circuit system 22 is connected to the second end 123 of the mounting portion 12 and is located on the side of the diaphragm 211 facing the mounting cavity 121. It can be understood that the diaphragm 211, the mounting cavity 121 of the mounting portion 12, and the magnetic circuit system 22 cooperate to form a rear cavity. By connecting the cavity 113 of the housing body 11 to the rear cavity, the volume of the rear acoustic cavity of the sound-generating device 100 can be effectively expanded, thereby improving the sound generation effect and performance of the sound-generating device 100.

[0055] The sound-generating device 100 of this utility model comprises an integrally formed enclosure body 11 and a mounting portion 12. The mounting portion 12 has a first end 122 connected to the enclosure body 11 and a second end 123 extending into the enclosure body 11, thus forming a mounting cavity 121 within the mounting portion 12. A cavity 113 communicating with the mounting cavity 121 is formed between the mounting portion 12 and the enclosure body 11. The speaker 2 is configured with a vibration system 21 and a magnetic circuit system 22 arranged opposite to each other. The outer periphery of the diaphragm 211 of the vibration system 21 is connected to the first end 122 of the mounting portion 12, and the magnetic circuit system 22 is connected to the second end 123 of the mounting portion 12. The magnetic circuit system 22 is opposite to and spaced from the side of the diaphragm 211 facing the mounting cavity 121. A magnetic gap 223 is provided in the magnetic circuit system 22, so that the end of the voice coil 212 away from the diaphragm 211... Inserted into the magnetic gap 223, when current is passed into the voice coil 212, the voice coil 212 vibrates within the magnetic gap 223 of the magnetic circuit system 22, thereby causing the diaphragm 211 to vibrate and produce sound. Since the cavity 113 located between the mounting part 12 and the main body 11 of the enclosure 1 is connected to the mounting cavity 121 of the mounting part 12, the rear acoustic cavity volume of the sound-producing device 100 is effectively increased, improving the acoustic performance of the sound-producing device 100. At the same time, the mounting part 12 of the vibration system 21 and the magnetic circuit system 22 of the speaker 2 are integrated with the main body 11 of the enclosure 1 into a single structure, eliminating the speaker 2's frame structure. This also avoids the abnormal noise caused by the speaker 2 colliding with the enclosure 1 when vibrating, and avoids air leakage caused by insufficient sealing between the speaker 2 and the enclosure 1. This effectively simplifies the structure, reduces costs and installation procedures, and improves sealing and waterproof performance.

[0056] In one embodiment, the magnetic circuit system 22 includes a U-shaped iron 221 and a central magnetic part 222. The U-shaped iron 221 is connected to the second end 123. The U-shaped iron 221 has a receiving groove 2211 that communicates with the mounting cavity 121. The central magnetic part 222 is disposed in the receiving groove 2211 and is spaced from the side wall 2213 of the receiving groove 2211 to form a magnetic gap 223.

[0057] In this embodiment, as Figure 1 and Figure 4As shown, by configuring the magnetic circuit system 22 with a U-shaped iron 221 and a central magnetic part 222, the central magnetic part 222 is mounted and fixed using the receiving groove 2211 of the U-shaped iron 221, such that the central magnetic part 222 is spaced apart from the side wall 2213 of the receiving groove 2211 to form a magnetic gap 223. Furthermore, the U-shaped iron 221 is connected to the second end 123 of the mounting part 12, thus achieving a fixed connection between the magnetic circuit system 22 and the mounting part 12.

[0058] To further improve connection stability, U-shaped iron 221 may optionally be integrally injection molded with housing 1. In this embodiment, U-shaped iron 221 is integrally injection molded with the mounting part 12 and housing body 11 of housing 1. It is understood that U-shaped iron 221 of magnetic circuit system 22 is made of magnet or magnetically conductive material. U-shaped iron 221 is placed in a mold, and then the injection molding material of housing 1 is introduced into the mold and integrally injection molded with U-shaped iron 221; this is not limited here.

[0059] In this embodiment, as Figure 1 and Figure 4 As shown, the central magnetic part 222 can be a central magnet and a central magnetic plate stacked together. The central magnet is connected to the bottom wall of the receiving groove 2211, and the periphery of the central magnet and the central magnetic plate are spaced apart from the side wall 2213 of the receiving groove 2211 to form a magnetic gap 223.

[0060] Of course, in other embodiments, the magnetic circuit system 22 can also be configured as a structure of a T-shaped iron and a side magnetic part. In this case, the T-shaped iron includes a base plate and a protruding post protruding from the center of the base plate. The side magnetic part is arranged around the protruding post and connected to the base plate, and the inner side of the side magnetic part is spaced from the outer peripheral wall of the protruding post to form a magnetic gap 223. It is understood that the magnetic circuit system 22 is connected to the second end 123 of the mounting part 12 through the side magnetic part. Optionally, the side magnetic part includes a side magnet and a side magnetic guiding plate stacked together, with the side magnet sandwiched between the side magnetic guiding plate and the base plate. Optionally, the side magnetic guiding plate is integrally injection molded with the mounting part 12 and the main body 11 of the housing 1, which is not limited here.

[0061] In one embodiment, the U-shaped iron 221 includes a bottom wall 2212 and a side wall 2213 disposed around the bottom wall 2212. The side wall 2213 and the bottom wall 2212 enclose each other to form a receiving groove 2211. The central magnetic part 222 is disposed on the bottom wall 2212 and forms a magnetic gap 223 at intervals with the side wall 2213. The side wall 2213 and the second end 123 are integrally injection molded.

[0062] In this embodiment, as Figure 1 and Figure 4 As shown, the sidewall 2213 of the U-shaped iron 221 surrounds the periphery of the bottom wall 2212, so that the sidewall 2213 and the bottom wall 2212 enclose and form a receiving groove 2211. Optionally, the sidewall 2213 and the bottom wall 2212 are arranged perpendicularly.

[0063] Understandably, the sidewall 2213 of U-shaped iron 221 is connected to the second end 123. Optionally, the end of the sidewall 2213 away from the bottom wall 2212 is connected to the second end 123. In this embodiment, the sidewall 2213 and the second end 123 are optionally integrally injection molded.

[0064] In order to improve the connection stability between U-shaped iron 221 and mounting part 12, in one embodiment, a limiting protrusion 2214 is provided on the outer side of the side wall 2213, and a limiting groove 1231 is formed at the second end 123 to cooperate with the limiting protrusion 2214. The limiting protrusion 2214 is embedded in the limiting groove 1231.

[0065] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, a limiting protrusion 2214 protrudes from the outer wall of the side wall 2213 away from the bottom wall 2212, and a limiting groove 123 is formed at the second end of the mounting part 12, with the limiting protrusion 2214 embedded in the limiting groove 1231. It can be understood that the limiting protrusion 2214 can be an annular protrusion extending around the outer periphery of the side wall 2213; or, multiple limiting protrusions 2214 may be provided, spaced apart along the outer periphery of the side wall 2213. Optionally, the limiting protrusions 2214 and the limiting grooves 1231 are provided in a one-to-one correspondence, which is not limited here.

[0066] In one embodiment, the bottom wall 2212 protrudes towards the central magnet 222 to form a boss 2215, the central magnet 222 is disposed on the boss 2215, and a clearance groove 2216 is formed between the boss 2215 and the side wall 2213 to communicate with the magnetic gap 223. The clearance groove 2216 is used to avoid the voice coil 212.

[0067] In this embodiment, as Figure 1 and Figure 4 As shown, by providing a boss 2215 on the bottom wall 2212 of the U-shaped iron 221, the boss 2215 can be used to support and install the central magnet 222, and a clearance groove 2216 can be formed between the boss 2215 and the side wall 2213 to form a magnetic gap 223. In this way, the clearance groove 2216 provides clearance for the voice coil 212 when it vibrates.

[0068] Understandably, the boss portion 2215 is formed by the side of the bottom wall 2212 facing away from the central magnet portion 222 and protruding towards the diaphragm 211, so that the side of the bottom wall 2212 facing away from the central magnet portion 222 is recessed, which is not limited here.

[0069] In one embodiment, the diaphragm 211 includes a dome 2111, a cone portion 2112 surrounding the dome 2111, a folded ring portion 2113 surrounding the cone portion 2112, and a fixing portion 2114 disposed outside the folded ring portion 2113. The fixing portion 2114 is connected to the first end 122, and the voice coil 212 is connected to the connection between the dome 2111 and the cone portion 2112.

[0070] In this embodiment, as Figure 1 and Figure 4 As shown, the dome 2111, cone portion 2112, surround portion 2113, and fixing portion 2114 of the diaphragm 211 can be selected as an integrally molded structure, which can improve the strength of the diaphragm 211. It can be understood that the diaphragm 211 is connected to the dome 2111 through the cone portion 2112, which on the one hand achieves sealing, and on the other hand adjusts the position of the voice coil 212 within the magnetic gap 223.

[0071] Optionally, the cone-shaped portion 2112 extends toward the mounting cavity 121, and from the spherical top 2111 to the folded ring portion 2113, the cross-sectional dimension of the cone-shaped portion 2112 gradually increases along the vibration direction perpendicular to the vibration direction of the vibration system 21. In this embodiment, the outer contour of the diaphragm 211 is circular, and the cone-shaped portion 2112 is cone-shaped.

[0072] Optionally, the top of the sphere 2111 protrudes towards the side away from the magnetic circuit system 22. This arrangement prevents the diaphragm 211 from interfering with the central magnetic portion 222 of the magnetic circuit system 22 during vibration. In this embodiment, the folded ring portion 2113 protrudes towards the side away from the magnetic circuit system 22. This arrangement prevents the folded ring portion 2113 from interfering with the first end 122 of the mounting portion 12.

[0073] In one embodiment, a protrusion 2115 is provided at the connection between the top of the sphere 2111 and the cone portion 2112, facing the voice coil 212. The protrusion 2115 is connected to one end of the voice coil 212 near the diaphragm 211. The protrusion 2115 includes a plurality of protrusions, which are spaced apart around the top of the sphere 2111.

[0074] In this embodiment, as Figure 1 and Figure 4As shown, by providing a protrusion 2115 at the connection between the spherical top 2111 and the cone portion 2112 of the diaphragm 211, the structural strength of the diaphragm 211 is further enhanced by the protrusion 2115. Simultaneously, by connecting the protrusion 2115 to the end of the voice coil 212 near the diaphragm 211, the position of the voice coil 212 within the magnetic gap 223 can be adjusted, and a ventilation gap can be formed at the connection between the voice coil 212 and the spherical top 2111 and the cone portion 2112 of the diaphragm 211, ensuring smooth airflow within the rear cavity. Optionally, multiple protrusions 2115 are provided, spaced apart around the spherical top 2111.

[0075] To further ensure the balance of air pressure inside and outside the voice coil 212, the voice coil 212 is provided with multiple through-hole structures.

[0076] In one embodiment, the vibration system 21 further includes a centering support 213, the inner side of which is connected to the outer wall of the voice coil 212. A support platform 124 is formed on the side of the mounting portion 12 facing the mounting cavity 121. The support platform 124 is located between the first end 122 and the second end 123. The outer side of the centering support 213 is supported and connected to the support platform 124.

[0077] In this embodiment, as Figure 1 and Figure 4 As shown, by setting a centering support 213, the voice coil 212 is centered, preventing polarization or oscillation during vibration. It is understood that the centering support 213 can be a spider structure. The centering support 213 is annular, with its inner side connected to the outer wall of the voice coil 212, and its outer side connected to the mounting portion 12.

[0078] Understandably, by forming a support platform 124 on the side of the mounting portion 12 facing the mounting cavity 121, such that the support platform 124 is located between the first end 122 and the second end 123, the outer side of the centering support piece 213 can be supported and connected to the support platform 124, thereby improving the connection stability.

[0079] Optionally, from the first end 122 to the second end 123, the cross-sectional area of ​​the mounting portion 12 gradually decreases along the vibration direction perpendicular to the vibration system 21. In this embodiment, the mounting portion 12 has a basin-shaped or bowl-shaped structure. Both the first end 122 and the second end of the mounting portion 12 can be selected as an annular structure.

[0080] In one embodiment, the mounting part 12 is provided with a plurality of through holes 125, which are spaced apart and located between the first end 122 and the second end 123. The plurality of through holes 125 connect the cavity 113 and the mounting cavity 121.

[0081] In this embodiment, as Figures 1 to 3As shown, by providing multiple through holes 125 in the mounting portion 12, the cavity 113 and the mounting cavity 121 are connected by the multiple through holes 125. This ensures that the rear cavity of the speaker 2 is connected to the cavity 113, thereby increasing the volume of the rear cavity. Optionally, the multiple through holes 125 can be located on both sides of the centering support 213, so that the air pressure on both sides of the centering support 213 can be balanced.

[0082] In one implementation, such as Figures 1 to 3 As shown, the main body 11 includes an upper shell 111 and a lower shell 112 that are connected by mating. The upper shell 111 and the mounting part 12 are integrally formed, and the upper shell 111 and the lower shell 112 are sealed together. It can be understood that the upper shell 111 and the lower shell 112 of the main body 11 are connected by mating to form a cavity 113. The upper shell 111 is provided with a sound outlet, and the upper shell 111 and the mounting part 12 are integrally formed. The upper shell 111 and the lower shell 112 are sealed together to improve sealing performance.

[0083] To further improve sealing, in this embodiment, such as Figure 1 and Figure 3 As shown, the upper shell 111 has a sealing groove 1111 at the end away from the mounting part 12, and the lower shell 112 has a sealing protrusion 1121 corresponding to the sealing groove 1111. The sealing protrusion 1121 is accommodated and confined within the sealing groove 1111. It can be understood that the sealing groove 1111 and the sealing protrusion 1121 are respectively provided on the end faces of the upper shell 111 and the lower shell 112 where they are connected.

[0084] Optionally, the lower shell 112 also has a sealing outer edge 1122 surrounding the sealing protrusion 1121, and the sealing outer edge 1122 is in sealing fit with the outer wall of the upper shell 111. This arrangement can further improve the connection sealing performance.

[0085] In one embodiment, the first end 122 protrudes in a direction away from the second end 123 and forms a fixing platform 126. The outer periphery of the diaphragm 211 is supported and fixed to the fixing platform 126. The fixing platform 126 and the end of the housing body 11 adjacent to the mounting part 12 form a mounting groove 127. The sound generating device 100 also includes a mesh cover. The periphery of the mesh cover is installed in the mounting groove 127 and is located on the side of the diaphragm 211 facing away from the magnetic circuit system 22.

[0086] In this embodiment, as Figures 1 to 3As shown, by providing a mounting groove 127 on the outer side of the first end 122 of the mounting part 12, a fixing mesh cover can be installed through the mounting groove 127, thereby protecting the diaphragm 211. Simultaneously, the upper surface of the fixing platform 126 is higher than the mounting groove 127, so that when the diaphragm 211 is glued to the fixing platform 126, excess glue can be collected through the mounting groove 127 to avoid affecting the vibration performance of the diaphragm 211. It can be understood that the mounting groove 127 can both collect and store excess glue during the fixing of the diaphragm 211, and also prevent glue from overflowing from the mounting groove 127 and affecting the vibration performance of the diaphragm 211 when the mesh cover is fixed.

[0087] In one implementation, such as Figure 2 As shown, the bottom of the mounting groove 127 has multiple support protrusions 1271 spaced apart, and the mesh cover abuts against the multiple support protrusions 1271. This arrangement can both support and fix the mesh cover, and also support the mesh cover through the support protrusions 1271 to avoid collision.

[0088] Optionally, such as Figures 1 to 3 As shown, the main body 11 of the box is also provided with a plurality of fasteners 1112 near the first end 122, and the plurality of fasteners 1112 are fastened to the mesh cover. This further improves the fixation of the mesh cover and facilitates the assembly and disassembly of the mesh cover.

[0089] This utility model also proposes an electronic device, which includes the aforementioned sound-generating device 100. The specific structure of the sound-generating device 100 is as described in the foregoing embodiments. Since this electronic device adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0090] Optionally, the electronic device of this utility model can be a portable mobile electronic product such as a speaker, mobile phone, or tablet, or a wearable device such as a watch, VR, or AR, or a vehicle, etc., without specific limitations.

[0091] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A sound-generating device, characterized in that, The sound-generating device includes: A housing, comprising an integrally formed housing body and a mounting portion, the mounting portion having a first end connected to the housing body and a second end extending toward the interior of the housing body, such that a mounting cavity is formed within the mounting portion, and a receptacle communicating with the mounting cavity is formed between the mounting portion and the housing body; and A loudspeaker includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil connected to the diaphragm. The outer periphery of the diaphragm is connected to a first end. The magnetic circuit system is connected to a second end and is opposite to and spaced from the side of the diaphragm facing the mounting cavity. The magnetic circuit system has a magnetic gap. The end of the voice coil away from the diaphragm is inserted into the magnetic gap.

2. The sound-generating device as described in claim 1, characterized in that, The magnetic circuit system includes: U-shaped iron, the U-shaped iron being connected to the second end, the U-shaped iron having a receiving groove communicating with the mounting cavity; and A central magnetic part is disposed within the receiving groove and spaced apart from the side wall of the receiving groove to form the magnetic gap; The U-shaped iron is integrally injection molded with the box body.

3. The sound-generating device as described in claim 2, characterized in that, The U-shaped iron includes a bottom wall and a side wall disposed around the periphery of the bottom wall. The side wall and the bottom wall enclose the receiving groove. The central magnetic part is disposed on the bottom wall and forms the magnetic gap at intervals with the side wall. The side wall and the second end are integrally injection molded. The sidewall has a limiting protrusion on its outer side, and the second end has a limiting groove that cooperates with the limiting protrusion. The limiting protrusion is embedded in the limiting groove.

4. The sound-generating device as described in claim 3, characterized in that, The bottom wall protrudes towards the central magnet to form a boss, the central magnet is disposed on the boss, and a clearance groove is formed between the boss and the side wall to communicate with the magnetic gap. The clearance groove is used to avoid the voice coil.

5. The sound-generating device as described in claim 1, characterized in that, The diaphragm includes a spherical top, a cone portion surrounding the spherical top, a folded ring portion surrounding the cone portion, and a fixing portion located outside the folded ring portion. The fixing portion is connected to the first end, and the voice coil is connected to the connection between the spherical top and the cone portion.

6. The sound-generating device as described in claim 5, characterized in that, The cone-shaped portion extends toward the mounting cavity, and from the top of the ball to the folded ring portion, the cross-sectional dimension of the cone-shaped portion gradually increases along the vibration direction perpendicular to the vibration direction of the vibration system; And / or, the top of the sphere protrudes toward the side away from the magnetic circuit system; And / or, the folded ring protrudes toward the side away from the magnetic circuit system; And / or, the top of the ball, the cone-shaped portion, the folded ring portion, and the fixing portion are integrally formed structures; And / or, the connection between the top of the sphere and the cone portion is provided with a protrusion facing the voice coil, and the protrusion is connected to the end of the voice coil near the diaphragm; wherein, the protrusion includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals around the top of the sphere.

7. The sound-generating device as claimed in claim 1, characterized in that, The vibration system further includes a centering support plate, the inner side of which is connected to the outer wall of the voice coil. A support platform is formed on the side of the mounting portion facing the mounting cavity. The support platform is located between the first end and the second end. The outer side of the centering support plate is supported and connected to the support platform. And / or, from the first end to the second end, the cross-sectional area of ​​the mounting portion along the vibration direction perpendicular to the vibration system gradually decreases; And / or, the mounting portion is provided with a plurality of through holes, the plurality of through holes are spaced apart and located between the first end and the second end, the plurality of through holes connecting the cavity and the mounting cavity; And / or, the main body of the box includes an upper shell and a lower shell that are connected by a mating joint. The upper shell and the mounting part are integrally formed. The upper shell and the lower shell are sealed together. The upper shell has a sealing groove at one end away from the mounting part. The lower shell has a sealing protrusion corresponding to the sealing groove. The sealing protrusion is accommodated and confined within the sealing groove. The lower shell also has a sealing outer edge around the sealing protrusion. The sealing outer edge is sealed and fitted to the outer wall of the upper shell.

8. The sound-generating device as described in any one of claims 1 to 7, characterized in that, The first end protrudes in a direction away from the second end and forms a fixing platform. The outer periphery of the diaphragm is supported and fixed to the fixing platform. The fixing platform and the end of the housing body adjacent to the mounting part form a mounting groove. The sound-generating device also includes a mesh cover, the periphery of which is installed in the mounting groove and located on the side of the diaphragm facing away from the magnetic circuit system.

9. The sound-generating device as described in claim 8, characterized in that, The bottom of the mounting groove is provided with a plurality of spaced support protrusions, and the mesh cover abuts against the plurality of support protrusions; And / or, the main body of the box is provided with a plurality of fasteners near the first end, and the plurality of fasteners are connected to the mesh cover fasteners.

10. An electronic device, characterized in that, The electronic device includes a sound-generating device as described in any one of claims 1 to 9.

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