Sound production monomer and electronic equipment

By setting the first pad on the centering support and using the sound out notch to avoid the pads of the magnetic circuit system, the problem of a large space occupied by multiple pads in the prior art affecting the performance of the magnetic circuit system is solved, and a high sensitivity and low cost design of the speaker is realized.

CN222621188UActive Publication Date: 2025-03-14GOERTEK INC
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Patent Information

Application Number
CN202421277311.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-05
Publication Date
2025-03-14
Estimated Expiration
2034-06-05

AI Technical Summary

Technical Problem

When the existing speakers improve sensitivity, due to the need to add multiple pads to electrically connect the voice coil, the magnetic circuit system needs to avoid the pads, which in turn affects the B value and overall performance of the magnetic circuit system.

Method used

By setting the first pad on the centering support plate opposite to the sound outburst in the vibration direction of the vibration system, the magnetic circuit system avoids the first pad through the sound outburst, thereby reducing the volume loss of magnets in the magnetic circuit system and increasing the magnetic field strength of the magnetic circuit system.

Benefits of technology

It effectively improves the product BL value and vocal sensitivity of the vocalizing monomer, and optimizes the centering support structure, no other structure and size changes are involved, and the cost is low.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and provides a sounding monomer and electronic equipment, and the sounding monomer comprises a housing, a magnetic circuit system and a vibration system. The magnetic circuit system is arranged on the shell; the vibration system comprises a diaphragm assembly, a centering disk and a voice coil assembly, the voice coil assembly at least comprises a first voice coil and a second voice coil, the centering disk comprises a first fixing part, a second fixing part and a third fixing part, the first fixing part is connected with the shell, the second fixing part is provided with a first bonding pad, and the third fixing part is provided with a second bonding pad; wherein the vibration system, the magnetic circuit system and the shell define a sound cavity, the magnetic circuit system is provided with a sound outlet notch communicated with the sound cavity, the first bonding pad and the sound outlet notch are oppositely arranged in the vibration direction of the vibration system, and the magnetic circuit system avoids the first bonding pad through the sound outlet notch. According to the sound production single body, by optimizing the arrangement position of the bonding pad, the volume loss of the magnet can be reduced, and the product BL value of the sound production single body is improved, so that the sound production sensitivity of the sound production single body is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic conversion, in particular to a sound-generating unit and an electronic device. Background Art

[0002] As people's requirements for consumer electronic products increase, the performance of speakers has attracted more and more attention, and the demand for improving the sensitivity of speakers has also increased. Under the constraints of speaker structure and size, the sensitivity of the speaker can only be improved by increasing the volume of the magnet as much as possible to increase the BL value of the speaker. For this reason, a dual (multi) voice coil structure is proposed, but for this structure, electrical connection between two or more voice coils is required through FPC and other methods. How to set the pads for electrical connection between FPC and voice coil is crucial.

[0003] At present, conventional speakers only have one voice coil, and there are only two pads for electrical connection between the voice coil and FPC, etc., which occupies a relatively small space. However, for a dual (multi) voice coil structure, because the electrical connection between the inner and outer voice coils or even N voice coils must be made at the same time, 2N pads (N≥1) connected to the voice coils are required. The more pads there are, the larger the space of the speaker product is occupied. If the pads are not set reasonably, the magnetic circuit system needs to avoid the pads, which will affect the B value of the magnetic circuit system, resulting in no significant improvement in product performance. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a sound-generating monomer, the magnetic induction intensity of which is greatly improved, thereby effectively improving the sound sensitivity.

[0005] The utility model also provides an electronic device with the sound-generating unit.

[0006] According to the first aspect of the present invention, the sound-emitting unit includes: a housing; a magnetic circuit system, the magnetic circuit system is arranged in the housing; a vibration system, the vibration system includes a diaphragm assembly, a centering support and a voice coil assembly, the voice coil assembly includes at least a first voice coil and a second voice coil, the outer periphery of the diaphragm assembly is fixed to the housing, the centering support is located between the voice coil assembly and the diaphragm assembly, the centering support includes a first fixing portion, a second fixing portion and a third fixing portion, the first fixing portion is connected to the housing, the second fixing portion is arranged on the circumferential inner side of the first fixing portion, a first connecting portion is arranged between the first fixing portion and the second fixing portion, one end of the first voice coil is connected to the second fixing portion, and the second fixing portion is provided with a first soldering pad arranged corresponding to the first voice coil, the third fixing portion is arranged on the circumferential inner side of the second fixing portion, a second connecting portion is arranged between the second fixing portion and the third fixing portion, one end of the second voice coil is connected to the third fixing portion, and the third fixing portion is provided with a second soldering pad arranged corresponding to the second voice coil;

[0007] Among them, the vibration system, the magnetic circuit system and the shell define a sound cavity, the magnetic circuit system is provided with a sound outlet gap connected to the sound cavity, along the vibration direction of the vibration system, the first welding pad is arranged opposite to the sound outlet gap, and the magnetic circuit system avoids the first welding pad through the sound outlet gap.

[0008] According to the sound-emitting unit of the first aspect of the embodiment of the utility model, the first welding disk of the centering support is arranged along the vibration direction of the vibration system relative to the sound notch, and the magnetic circuit system avoids the first welding disk through the sound notch. Therefore, the magnetic circuit system does not need to set an additional avoidance for the first welding disk, thereby reducing the volume loss of the magnet in the magnetic circuit system, improving the magnetic field strength of the magnetic circuit system, and then improving the product BL value of the sound-emitting unit and improving the sound sensitivity of the product.

[0009] According to some embodiments of the present invention, the second fixing portion is formed into a square structure, the second fixing portion includes four first connecting edges connected end to end, and the first soldering pad is located at a diagonal position of the second fixing portion and / or on the first connecting edges.

[0010] According to some embodiments of the present utility model, two first soldering pads are provided, and the two first soldering pads are respectively located at a pair of diagonal positions of the second fixing portion;

[0011] Or, the first connecting edge includes a major axis and a minor axis, the length of the major axis is L1, the length of the minor axis is L2, and the second fixing portion satisfies: L1 / L2≥2;

[0012] There are two first pads, and the two first pads are respectively located in the middle of the long axis.

[0013] According to some embodiments of the present invention, the third fixing portion is formed into a square structure, the third fixing portion includes four second connecting edges connected end to end, and the second soldering pad is located at a diagonal position of the third fixing portion and / or on the second connecting edges.

[0014] According to some embodiments of the present utility model, two second soldering pads are provided, and the two second soldering pads are respectively located at a pair of diagonal positions of the third fixing portion;

[0015] Or, the second connecting side includes a long side and a short side, the length of the long side is L3, the length of the short side is L4, and the third fixing portion satisfies: L3 / L4≥2;

[0016] There are two second pads, and the two second pads are respectively located in the middle of the long sides.

[0017] According to some embodiments of the utility model, the magnetic circuit system includes a magnetic yoke and a magnetic circuit assembly, the magnetic circuit assembly includes a central magnetic portion, a first side magnetic portion arranged outside the central magnetic portion, and a second side magnetic portion arranged outside the first side magnetic portion, the second side magnetic portion and the first side magnetic portion are spaced apart to form a first magnetic gap corresponding to the first voice coil, and the first side magnetic portion and the central magnetic portion are spaced apart to form a second magnetic gap corresponding to the second voice coil;

[0018] The first side magnet portion includes a first side magnet, the second side magnet portion includes a second side magnet, the first side magnet is formed into a closed ring structure, the second side magnet includes a plurality of second side magnets, and adjacent second side magnets are spaced apart.

[0019] According to some embodiments of the present invention, the second side magnetic portion is formed into a square structure, the second side magnetic portion includes a first side and a second side connected end to end, and a plurality of second side magnets are respectively located on the first side and the second side, wherein:

[0020] The second side magnet located on the first side and the second side magnet located on the second side are arranged at intervals to form the sound outlet gap;

[0021] And / or, the length of the first side is greater than that of the second side, the number of the second side magnets located on the first side is at least two, and adjacent second side magnets located on the first side are spaced apart to define the sound outlet gap.

[0022] According to some embodiments of the present invention, the second welding pad is arranged on the circumferential inner side of the third fixing portion, and along the vibration direction of the vibration system, the central magnetic portion is provided with a first avoidance groove arranged opposite to the second welding pad.

[0023] According to some embodiments of the present invention, the first voice coil and the second voice coil are located on a side of the centering support facing the magnetic circuit system, and the diaphragm assembly is located on a side of the centering support facing away from the magnetic circuit system;

[0024] The diaphragm assembly includes a diaphragm and a vibration plate, the diaphragm includes an outer fixing part, a folding ring part and an inner fixing part which are arranged in sequence from the outside to the inside, the outer fixing part is connected to the first fixing part, the inner fixing part is connected to the second fixing part, a connecting ring corresponding to the third fixing part is also provided on the circumferential inner side of the inner fixing part, a connecting arm is provided between the connecting ring and the inner fixing part, there are multiple connecting arms which respectively connect the inner fixing part and the connecting ring, the connecting ring is connected to the third fixing part, and the vibration plate is connected to the inner fixing part and the connecting ring.

[0025] An electronic device according to an embodiment of the second aspect of the utility model includes a sound-emitting unit according to the above embodiment of the utility model.

[0026] According to the electronic device of the embodiment of the second aspect of the utility model, by setting the above-mentioned sound-emitting unit, the product BL value of the sound-emitting unit is large, the sound sensitivity is high, and the sound effect is good. Moreover, only by optimizing the centering support plate structure, no changes are involved in other structures and dimensions, and the cost is low. The high-sensitivity design requirements of the electronic device are met, and the market competitiveness of the electronic device is improved.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the explosion structure of the sound-generating unit of the utility model;

[0030] Figure 2 It is a schematic cross-sectional view of the sound-generating unit of the utility model;

[0031] Figure 3 This is a structural schematic diagram of a centering support piece according to the first embodiment of the utility model;

[0032] Figure 4 This is a structural schematic diagram of a centering support piece according to a second embodiment of the utility model;

[0033] Figure 5 This is a structural schematic diagram of a centering support piece according to a third embodiment of the utility model;

[0034] Figure 6 This is a structural schematic diagram of a centering support piece according to a fourth embodiment of the utility model;

[0035] Figure 7 This is a structural schematic diagram of a centering support piece according to a fifth embodiment of the present utility model;

[0036] Figure 8 It is a structural schematic diagram of the diaphragm of the utility model;

[0037] Reference numerals:

[0038] 1- Shell;

[0039] 2-magnetic circuit system; 2a-sound outlet;

[0040] 21- magnetic yoke;

[0041] 22-magnetic circuit assembly; 221-central magnetic part; 2211-central magnet; 2212-central magnetic conductive plate; 2213-first avoidance slot; 222-first side magnetic part; 2221-first side magnet; 2222-first side magnetic conductive plate; 223-second side magnetic part; 2231-second side magnet; 2232-second side magnetic conductive plate;

[0042] 23-first magnetic gap; 24-second magnetic gap;

[0043] 3-Vibration system;

[0044] 31-diaphragm assembly; 311-diaphragm; 3111-external fixing portion; 3112-folding ring portion; 3113-internal fixing portion; 3114-connecting ring; 3115-connecting arm; 312-vibration plate;

[0045] 32-centering support piece; 321-first fixing part; 322-second fixing part; 323-third fixing part; 324-first connecting part; 325-first welding pad; 326-second connecting part; 327-second welding pad;

[0046] 33 - voice coil assembly; 331 - first voice coil; 332 - second voice coil. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0050] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0051] like Figures 1 to 8As shown together, the sound-emitting unit according to the embodiment of the utility model includes a housing 1, a magnetic circuit system 2 and a vibration system 3; the magnetic circuit system 2 is arranged in the housing 1; the vibration system 3 includes a diaphragm assembly 31, a centering support 32 and a voice coil assembly 33, the voice coil assembly 33 includes at least a first voice coil 331 and a second voice coil 332, the outer periphery of the diaphragm assembly 31 is fixed to the housing 1, the centering support 32 is located between the voice coil assembly 33 and the diaphragm assembly 31, the centering support 32 includes a first fixing portion 321, a second fixing portion 322 and a third fixing portion 323, the first fixing portion 321 is connected to the housing 1, the second fixing portion 322 is arranged on the circumferential inner side of the first fixing portion 321, a first connecting portion 324 is provided between the first fixing portion 321 and the second fixing portion 322, the first voice coil 331 One end of the second fixed part 322 is connected to the second fixed part 322, and the second fixed part 322 is provided with a first soldering pad 325 corresponding to the first voice coil 331, the third fixed part 323 is provided on the circumferential inner side of the second fixed part 322, a second connecting part 326 is provided between the second fixed part 322 and the third fixed part 323, one end of the second voice coil 332 is connected to the third fixed part 323, and the third fixed part 323 is provided with a second soldering pad 327 corresponding to the second voice coil 332; wherein, the vibration system 3, the magnetic circuit system 2 and the shell 1 define a sound cavity, the magnetic circuit system 2 is provided with a sound outlet gap 2a connected to the sound cavity, along the vibration direction of the vibration system 3, the first soldering pad 325 is arranged opposite to the sound outlet gap 2a, and the magnetic circuit system 2 avoids the first soldering pad 325 through the sound outlet gap 2a.

[0052] Specifically, the voice coil assembly may include two or more voice coils, the centering support 32 is located between the voice coil assembly 33 and the diaphragm assembly 31, the first fixing portion 321 of the centering support 32 is fixed to the housing 1, and the multiple voice coils in the voice coil assembly 33 are connected to the centering support 32. For example, the voice coil assembly 33 includes a first voice coil 331 and a second voice coil 332, the centering support 32 also includes a second fixing portion 322 and a third fixing portion 323, the third fixing portion 323 is located on the circumferential inner side of the second fixing portion 322, the second fixing portion 322 is located on the circumferential inner side of the first fixing portion 321, the top end of the first voice coil 331 is connected to the second fixing portion 322, and the top end of the second voice coil 332 is connected to the third fixing portion 323. Among them, a sound cavity is provided in the shell 1 of the sound-emitting device, the magnetic circuit system 2 is provided with a sound outlet gap 2a connected to the sound cavity, and the second fixed part 322 is provided with a first solder pad 325 corresponding to the first voice coil 331. Along the vibration direction of the vibration system 3, the first solder pad 325 and the sound outlet gap 2a are arranged opposite to each other. Therefore, the magnetic circuit system 2 can avoid the first solder pad 325 through the sound outlet gap 2a, so that there is no need to set an additional avoidance groove for avoiding the first solder pad 325 in the magnetic circuit system 2, which can reduce the sacrifice of the magnet volume of the magnetic circuit system 2 and improve the magnetic field strength of the magnetic circuit system 2.

[0053] According to the sound-emitting unit of the utility model, by setting the first welding pad 325 of the centering support plate 32 along the vibration direction of the vibration system 3 and being arranged opposite to the sound outlet notch 2a, the magnetic circuit system 2 avoids the first welding pad 325 through the sound outlet notch 2a, so that the magnetic circuit system 2 does not need to set an additional avoidance for the first welding pad 325, thereby reducing the volume loss of the magnet in the magnetic circuit system 2, improving the magnetic field strength of the magnetic circuit system 2, and further improving the product BL value of the sound-emitting unit and the sound sensitivity of the product.

[0054] In some embodiments of the present invention, Figures 1 to 7 As shown together, the second fixing portion 322 is formed into a square structure, and the second fixing portion 322 includes four first connecting edges connected end to end, and the first pad 325 is located at a diagonal position of the second fixing portion 322 and / or on the first connecting edge. In other words, the first pad 325 can be arranged at a diagonal position of the second fixing portion 322, and the first pad 325 can also be arranged on the first connecting edge of the second fixing portion 322. Of course, when there are multiple first pads 325, they can also be arranged at the diagonal position and the first connecting edge of the second fixing portion 322 respectively. It can be understood that in order to ensure smooth airflow when the sound unit is working, it is necessary to reserve a sound gap 2a by avoiding the magnet and the side magnetic conductive plate, and by setting the first soldering pad 325 at the diagonal position of the second fixed part 322 and / or on the first connecting edge, the first soldering pad 325 can be made to correspond to the sound gap 2a. The first soldering pad 325 for electrically connecting to the first voice coil 331 is set at the position of the sound gap 2a, without losing the magnet volume of the magnetic circuit system 2, and can improve the magnetic field strength of the magnetic circuit system 2, thereby effectively improving the sensitivity of the sound unit.

[0055] In some embodiments of the present invention, Figure 1 , such as 3, Figure 4 , Figure 6 and Figure 7 As shown in common, there are two first pads 325, and the two first pads 325 are respectively located at a pair of diagonal positions of the second fixing part 322. Because the diagonal positions of the first voice coil 331 need to ensure smooth airflow when the sound unit is working, it is necessary to reserve a sound outlet gap 2a by avoiding the magnet and the side magnetic plate, and the first pad 325 electrically connected to the first voice coil 331 is set at the diagonal position of the second fixing part 322. By optimizing the setting position of the pad, the volume loss of the magnet can be reduced, and the product BL value of the sound unit can be improved, thereby improving the sound sensitivity of the sound unit. According to actual use requirements, the first pad 325 can be set on the outside of the second fixing part 322, or it can be set on the inside of the second fixing part 322.

[0056] In other embodiments of the present invention, Figure 5As shown, the second fixing portion 322 includes four first connecting edges connected end to end, and the first connecting edge includes a long axis and a short axis, the length of the long axis is L1, and the length of the short axis is L2. When the second fixing portion 322 satisfies: L1 / L2≥2, that is, when the aspect ratio of the sound-emitting unit is relatively large, in order to ensure smooth airflow during operation of the sound-emitting unit, a sound outlet notch 2a needs to be set at a position corresponding to the long axis. Specifically, there are two first pads 325, and the two first pads 325 are respectively located in the middle of the long axis, thereby making the two first pads 325 correspond to the sound outlet notch 2a located in the middle of the long axis. By optimizing the setting position of the pad, the volume loss of the magnet can be reduced, and the product BL value of the sound-emitting unit can be improved, thereby improving the sound sensitivity of the sound-emitting unit. According to actual use requirements, the first pad 325 can be set on the outside of the long axis or on the inside of the long axis.

[0057] In some embodiments of the present invention, Figures 1 to 7 As shown together, the third fixing portion 323 is formed into a square structure, and the third fixing portion 323 includes four second connection edges connected end to end, and the second soldering pad 327 is located at a diagonal position of the third fixing portion 323 and / or on the second connection edge. In other words, the second soldering pad 327 can be arranged at a diagonal position of the third fixing portion 323, and the second soldering pad 327 can also be arranged on the second connection edge of the third fixing portion 323. Of course, when there are multiple second soldering pads 327, they can also be arranged at a diagonal position and on the second connection edge of the third fixing portion 323, respectively. It can be understood that the second soldering pad 327 is located at a diagonal position of the third fixing portion 323 and / or on the second connection edge, so that the second soldering pad 327 can correspond to the lead of the second voice coil 332, so as to facilitate the welding of the lead of the second voice coil 332 with the second soldering pad 327.

[0058] In some embodiments of the present invention, Figure 1 , Figures 3 to 6 As shown together, there are two second soldering pads 327, and the two second soldering pads 327 are respectively located at a pair of diagonal positions of the third fixed portion 323, thereby making the leads at the two diagonal positions of the second voice coil 332 correspond to the two second soldering pads 327, respectively, so as to facilitate the electrical connection between the second voice coil 332 and the second soldering pads 327. According to actual usage requirements, the second soldering pad 327 can be located on the outside of the third fixed portion 323, or on the inside of the third fixed portion 323.

[0059] In other embodiments of the present invention, Figure 7As shown, the third fixed portion 323 includes four second connecting edges connected end to end, the second connecting edges include a long side and a short side, the length of the long side is L3, and the length of the short side is L4. When the third fixed portion 323 satisfies: L3 / L4≥2, that is, when the aspect ratio of the sound unit is relatively large, two second soldering pads 327 can be provided, and the two second soldering pads 327 are respectively located in the middle position of the long axis. According to actual usage requirements, the second soldering pad 327 can be located on the inner side of the long axis or on the outer side of the long axis.

[0060] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the magnetic circuit system 2 includes a magnetic yoke 21 and a magnetic circuit assembly 22, the magnetic circuit assembly 22 includes a central magnetic portion 221, a first side magnetic portion 222 arranged outside the central magnetic portion 221, and a second side magnetic portion 223 arranged outside the first side magnetic portion 222, the central magnetic portion 221, the first side magnetic portion 222 and the second side magnetic portion 223 are all arranged on the magnetic yoke 21, the second side magnetic portion 223 and the first side magnetic portion 222 are arranged at intervals to form a first magnetic gap 23 corresponding to the first voice coil 331, one end of the first voice coil 331 is connected to the second fixing portion 322, and the other end of the first voice coil 331 is inserted into the second fixing portion 322. A magnetic gap 23, the first side magnetic part 222 and the central magnetic part 221 are arranged at intervals to form a second magnetic gap 24 corresponding to the second voice coil 332, one end of the second voice coil 332 is connected to the third fixing part 323, and the other end of the second voice coil 332 is inserted into the second magnetic gap 24; wherein the first side magnetic part 222 includes a first side magnet 2221, the second side magnetic part 223 includes a second side magnet 2231, the first side magnet 2221 is formed into a closed annular structure, the second side magnet 2231 includes a plurality of second side magnets, and adjacent second side magnets 2231 are arranged at intervals to form a sound outlet gap 2a. Therefore, through the above arrangement, since the first side magnet 2221 is arranged on the inner side of the second side magnet 2231, the sound outlet gap 2a is defined between the adjacent second side magnets 2231, and therefore, the first side magnet 2221 can be formed into a closed annular structure, thereby increasing the magnet volume of the first side magnetic part 222 and improving the magnetic field strength of the magnetic circuit system 2.

[0061] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the central magnetic portion 221 includes a central magnet 2211 and a central magnetic plate 2212 arranged on the central magnet 2211, the central magnet 2211 is arranged on the magnetic yoke 21, the central magnetic plate 2212 is located on the side of the central magnet 2211 away from the magnetic yoke 21 and is connected to the central magnet 2211; the first side magnetic portion 222 also includes a first side magnetic plate 2222, the first side magnet 2221 is arranged on the magnetic yoke 21, the first side magnetic plate 2222 is located on the side of the first side magnet 2221 away from the magnetic yoke 21 and is connected to the first side magnet 2221; optionally, the second side magnetic portion 223 also includes a second side magnetic plate 2232 that is integrally injection molded with the outer shell 1, the second side magnet 2231 is arranged on the magnetic yoke 21, and the second side magnetic plate 2232 is located on the side of the second side magnet 2231 away from the magnetic yoke 21.

[0062] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second side magnetic part 223 is formed into a square structure, and the second side magnetic part 223 includes a first side and a second side connected end to end, and a plurality of second side magnets 2231 are respectively located at the first side and the second side, wherein the second side magnet 2231 located at the first side and the second side magnet 2231 located at the second side are arranged at intervals to form a sound outlet gap 2a. Thus, the sound outlet gap 2a corresponds to the corner position of the second fixed part 322, and according to actual use requirements, the first pad 325 can be arranged at the corner position of the second fixed part 322 and located on the outside of the second fixed part 322.

[0063] In other embodiments of the present invention, Figure 1 and Figure 2 As shown, the second side magnetic part 223 is formed into a square structure, and the second side magnetic part 223 includes a first side and a second side connected end to end, and a plurality of second side magnets 2231 are respectively located on the first side and the second side, wherein the length of the first side is greater than the length of the second side, the number of the second side magnets 2231 located on the first side is at least two, and the adjacent second side magnets 2231 located on the first side are spaced to define a sound outlet gap 2a. Thus, the sound outlet gap 2a corresponds to the long axis of the second fixed part 322, and the first pad 325 can be arranged on the long axis of the second fixed part 322 and located on the outside of the second fixed part 322.

[0064] Understandable, such as Figures 1 to 7As shown together, the second side magnets 2231 are spaced apart to define sound outlet gaps 2a. When the sound outlet gap 2a corresponds to the corner position of the second fixed portion 322, the first solder pad 325 is located at the corner position of the second fixed portion 322 and is located on the outside of the second fixed portion 322. When the sound outlet gap 2a corresponds to the long axis of the second fixed portion 322, the first solder pad 325 is located on the outside of the long axis of the second fixed portion 322. Therefore, no matter whether the first solder pad 325 is located on the outside of the corner position of the second fixed portion 322 or on the outside of the middle position of the long axis of the second fixed portion 322, the volume of the magnet will not be lost, and the sensitivity of the sound-emitting unit is the highest.

[0065] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 5 As shown, the second soldering pad 327 is arranged on the circumferential inner side of the third fixed part 323, and along the vibration direction of the vibration system 3, the central magnetic part 221 is provided with a first avoidance groove 2213 arranged opposite to the second soldering pad 327, and the first avoidance groove 2213 realizes the avoidance of the lead of the second voice coil 332 and the welding position of the second soldering pad 327.

[0066] In other embodiments of the present invention, Figure 6 As shown, the first soldering pad 325 is arranged on the circumferential inner side of the second fixing portion 322, and along the vibration direction of the vibration system 3, the first side magnetic portion 222 is provided with a second avoidance groove arranged opposite to the first soldering pad 325, and the second avoidance groove realizes the avoidance of the lead of the first voice coil 331 and the welding position of the first soldering pad 325.

[0067] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 8As shown together, the first voice coil 331 and the second voice coil 332 are located on the side of the centering support plate 32 facing the magnetic circuit system 2, and the diaphragm assembly 31 is located on the side of the centering support plate 32 facing away from the magnetic circuit system 2; the diaphragm assembly 31 includes a diaphragm 311 and a vibration plate 312, and the diaphragm 311 includes an outer fixing portion 3111, a folding ring portion 3112 and an inner fixing portion 3113 arranged in sequence from the outside to the inside, the outer fixing portion 3111 is connected to the first fixing portion 321, and the inner fixing portion 311 3 is connected to the second fixing part 322, and a connecting ring 3114 corresponding to the third fixing part 323 is further provided on the circumferential inner side of the inner fixing part 3113, and a connecting arm 3115 is provided between the connecting ring 3114 and the inner fixing part 3113, and a plurality of connecting arms 3115 are respectively connected to the inner fixing part 3113 and the connecting ring 3114, and the connecting ring 3114 is connected to the third fixing part 323, and the vibration plate 312 is connected to the inner fixing part 3113 and the connecting ring 3114. The outer fixing part 3111 of the diaphragm 311 is connected to the first fixing part 321, the inner fixing part 3113 is connected to the second fixing part 322, and the connecting ring 3114 is connected to the third fixing part 323. The voice coil assembly 33 moves, driving the centering support 32 to move synchronously, and then driving the diaphragm assembly 31 to vibrate, so as to achieve more sensitive vibration sound generation.

[0068] The utility model also discloses an electronic device, including the sound-emitting unit according to the above embodiment of the utility model. The specific structure of the sound-emitting unit of the electronic device refers to the above embodiment. Since the electronic device adopts all the technical features of the above sound-emitting unit, it meets the high-sensitivity design requirements of the electronic device and improves the market competitiveness of the electronic device.

[0069] According to the electronic device of the utility model, by setting the above-mentioned sound-emitting unit, the product BL value of the sound-emitting unit is relatively large, the sound sensitivity is high, and the sound effect is good. Moreover, only by optimizing the centering support plate structure, no changes are involved in other structures and dimensions, and the cost is low. The high-sensitivity design requirements of the electronic device are met, and the market competitiveness of the electronic device is improved.

[0070] It can be understood that the electronic device may be a mobile phone, a speaker, a computer, a headset, a watch, a television or a tablet computer, etc., which will not be elaborated here.

[0071] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A sound-emitting unit, characterized in that: include: shell; A magnetic circuit system, wherein the magnetic circuit system is arranged on the housing; A vibration system, the vibration system comprising a diaphragm assembly, a centering support and a voice coil assembly, the voice coil assembly comprising at least a first voice coil and a second voice coil, the outer periphery of the diaphragm assembly being fixed to the housing, the centering support being located between the voice coil assembly and the diaphragm assembly, the centering support comprising a first fixing portion, a second fixing portion and a third fixing portion, the first fixing portion being connected to the housing, the second fixing portion being arranged on the circumferential inner side of the first fixing portion, a first connecting portion being arranged between the first fixing portion and the second fixing portion, one end of the first voice coil being connected to the second fixing portion, and the second fixing portion being provided with a first soldering pad arranged corresponding to the first voice coil, the third fixing portion being arranged on the circumferential inner side of the second fixing portion, a second connecting portion being arranged between the second fixing portion and the third fixing portion, one end of the second voice coil being connected to the third fixing portion, and the third fixing portion being provided with a second soldering pad arranged corresponding to the second voice coil; Among them, the vibration system, the magnetic circuit system and the shell define a sound cavity, the magnetic circuit system is provided with a sound outlet gap connected to the sound cavity, along the vibration direction of the vibration system, the first welding pad is arranged opposite to the sound outlet gap, and the magnetic circuit system avoids the first welding pad through the sound outlet gap.

2. The sound-emitting unit according to claim 1, characterized in that: The second fixing portion is formed into a square structure, the second fixing portion includes four first connecting edges connected end to end, and the first soldering pad is located at a diagonal position of the second fixing portion and / or on the first connecting edges.

3. The sound-emitting unit according to claim 2, characterized in that: There are two first soldering pads, and the two first soldering pads are respectively located at a pair of diagonal positions of the second fixing part; Or, the first connecting edge includes a major axis and a minor axis, the length of the major axis is L1, the length of the minor axis is L2, and the second fixing portion satisfies: L1 / L2≥2; There are two first pads, and the two first pads are respectively located in the middle of the long axis.

4. The sound-emitting unit according to claim 1, characterized in that: The third fixing portion is formed into a square structure, and the third fixing portion includes four second connection edges connected end to end, and the second soldering pad is located at a diagonal position of the third fixing portion and / or on the second connection edge.

5. The sound-emitting unit according to claim 4, characterized in that: There are two second soldering pads, and the two second soldering pads are respectively located at a pair of diagonal positions of the third fixing portion; Or, the second connecting side includes a long side and a short side, the length of the long side is L3, the length of the short side is L4, and the third fixing portion satisfies: L3 / L4≥2; There are two second pads, and the two second pads are respectively located in the middle of the long sides.

6. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The magnetic circuit system includes a magnetic yoke and a magnetic circuit assembly, wherein the magnetic circuit assembly includes a central magnetic portion, a first side magnetic portion arranged outside the central magnetic portion, and a second side magnetic portion arranged outside the first side magnetic portion, wherein the second side magnetic portion is spaced apart from the first side magnetic portion to form a first magnetic gap corresponding to the first voice coil, and the first side magnetic portion is spaced apart from the central magnetic portion to form a second magnetic gap corresponding to the second voice coil; The first side magnet portion includes a first side magnet, the second side magnet portion includes a second side magnet, the first side magnet is formed into a closed ring structure, the second side magnet includes a plurality of second side magnets, and adjacent second side magnets are spaced apart.

7. The sound-emitting unit according to claim 6, characterized in that: The second side magnetic part is formed into a square structure, and the second side magnetic part includes a first side and a second side connected end to end, and a plurality of second side magnets are respectively located on the first side and the second side, wherein, The second side magnet located on the first side and the second side magnet located on the second side are arranged at intervals to form the sound outlet gap; And / or, the length of the first side is greater than that of the second side, the number of the second side magnets located on the first side is at least two, and adjacent second side magnets located on the first side are spaced apart to define the sound outlet gap.

8. The sound-emitting unit according to claim 6, characterized in that: The second soldering pad is arranged on the inner side of the third fixing portion in the circumferential direction, and along the vibration direction of the vibration system, the central magnetic portion is provided with a first avoidance groove arranged opposite to the second soldering pad.

9. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The first voice coil and the second voice coil are located on a side of the centering support facing the magnetic circuit system, and the diaphragm assembly is located on a side of the centering support facing away from the magnetic circuit system; The diaphragm assembly includes a diaphragm and a vibration plate, the diaphragm includes an outer fixing part, a folding ring part and an inner fixing part which are arranged in sequence from the outside to the inside, the outer fixing part is connected to the first fixing part, the inner fixing part is connected to the second fixing part, a connecting ring corresponding to the third fixing part is also provided on the circumferential inner side of the inner fixing part, a connecting arm is provided between the connecting ring and the inner fixing part, there are multiple connecting arms which respectively connect the inner fixing part and the connecting ring, the connecting ring is connected to the third fixing part, and the vibration plate is connected to the inner fixing part and the connecting ring.

10. An electronic device, characterized in that: It comprises a sound-emitting unit according to any one of claims 1 to 9.