Sound production device and electronic equipment

Abstract

The utility model discloses a sounding device and electronic equipment, the sounding device comprises a shell, a magnetic circuit system and a vibration system, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap which are arranged at intervals from inside to outside, the vibration system comprises a vibrating diaphragm, a voice coil assembly and a support chip structure, and the vibrating diaphragm and the magnetic circuit system are arranged oppositely. The shell is connected with the magnetic circuit system and the vibrating diaphragm, the voice coil assembly comprises a first voice coil and a second voice coil, the upper end of the first voice coil is fixedly arranged on the vibrating diaphragm, the lower end of the first voice coil corresponds to the first magnetic gap, the upper end of the second voice coil is fixedly arranged on the vibrating diaphragm, and the lower end of the second voice coil corresponds to the second magnetic gap. The first voice coil is connected with the second voice coil through a communication wire, the voice coil assembly is electrically connected with an external power supply through a supporting chip structure, and the supporting chip structure is connected with the shell and the second voice coil. The technical scheme of the utility model aims to simplify the structure of the sounding device and improve the operation stability of the vibration system of the sounding device.

Description

Technical Field

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

[0002] Sound-generating devices are crucial electroacoustic transducers in consumer electronics, widely used in loudspeakers, earpieces, and headphones. To achieve high performance and large amplitude, a multi-voice-coil sound-generating device has been proposed, where multiple voice coils synchronously drive a single diaphragm. While this structure increases the amplitude and sensitivity of the sound-generating device, the multiple voice coils complicate its structure, increasing the difficulty of setting up the corresponding centering structure and affecting the centering effect of the centering support. Therefore, maintaining the vibrational stability of a large-amplitude vibration system becomes a pressing problem to solve. Utility Model Content

[0003] The main purpose of this invention is to provide a sound-generating device that simplifies and improves the operational stability of the vibration system of the sound-generating device, thereby enhancing the sound-generating effect.

[0004] To achieve the above objectives, the sound-generating device proposed in this utility model includes:

[0005] shell;

[0006] The magnetic circuit system includes a first magnetic gap and a second magnetic gap spaced apart from the inside out; and

[0007] A vibration system includes a diaphragm, a voice coil assembly, and a support structure. The diaphragm is disposed opposite to the magnetic circuit system. The housing connects the magnetic circuit system and the diaphragm. The voice coil assembly includes a first voice coil and a second voice coil. The upper end of the first voice coil is fixed to the diaphragm, and the lower end is disposed corresponding to the first magnetic gap. The upper end of the second voice coil is fixed to the diaphragm, and the lower end is disposed corresponding to the second magnetic gap. The first voice coil and the second voice coil are integrally wound from a single wire. The first voice coil is connected to the second voice coil via a connecting wire. The voice coil assembly is electrically connected to an external power source via the support structure, and the support structure is connected to both the housing and the second voice coil.

[0008] In one embodiment, the first voice coil and the second voice coil are connected by a section of the connecting wire, and the two leads of the voice coil assembly include a first lead connected to the first voice coil and a second lead connected to the second voice coil.

[0009] In an embodiment, the support structure comprises a plurality of centering supports distributed along the periphery of the second voice coil, one end of each of the centering supports being connected to the housing, and the other end of each of the centering supports being connected to the second voice coil.

[0010] In an embodiment, the plurality of centering supports comprises a first support and a plurality of second supports, the first support comprising a first outer connecting portion, a first elastic portion, and a first inner connecting portion, the second supports each comprising a second outer connecting portion, a second elastic portion, and a second inner connecting portion, the first outer connecting portion and the second outer connecting portions each being connected to the housing, the first inner connecting portion being located in a different horizontal plane from the first elastic portion, the first inner connecting portion being connected to the upper end of the second voice coil and extending at least to between the first voice coil and the second voice coil to electrically connect with the lead wire of the first voice coil, and the second inner connecting portion being connected to the lower end of the second voice coil and electrically connected with the lead wire of the second voice coil.

[0011] In an embodiment, the vibration system further comprises a first skeleton, the upper end of the first voice coil being connected to the diaphragm through the first skeleton.

[0012] In an embodiment, the vibration system further comprises a second skeleton, the upper end of the second voice coil being connected to the diaphragm through the second skeleton.

[0013] In an embodiment, the first inner connecting portion is provided with a connecting step, and the second skeleton is clamped between the connecting step and the diaphragm.

[0014] In an embodiment, the first inner connecting portion further comprises an adapter segment, at least part of the adapter segment extending along the vibration direction of the vibration system, and the two ends of the adapter segment being connected to the elastic portion of the first support and the connecting step, respectively.

[0015] In an embodiment, the second skeleton comprises a ring-shaped skeleton body and skeleton extension members distributed along the circumferential direction of the skeleton body, the top of the second voice coil being connected to the skeleton body, and the adapter segment being connected to the skeleton extension members in abutment.

[0016] In an embodiment, the adapter segment and the skeleton extension members each extend along the vibration direction of the vibration system.

[0017] In an embodiment, the adapter segment is located between the skeleton extension members and the second voice coil.

[0018] In an embodiment, the adapter segment and the skeleton extension members are each located outside the second voice coil.

[0019] In an embodiment, the adapter segment and the skeleton extension members are connected in abutment.

[0020] In an embodiment, the magnetic circuit system comprises a magnetic yoke, a center magnetic circuit part, a first side magnetic circuit part and a second side magnetic circuit part arranged on the same side of the magnetic yoke, the first side magnetic circuit part is arranged around the center magnetic circuit part and a first magnetic gap is formed between the center magnetic circuit part and the first side magnetic circuit part, the second side magnetic circuit part is arranged around the first side magnetic circuit part and a second magnetic gap is formed between the first side magnetic circuit part and the second side magnetic circuit part, the second side magnetic circuit part is provided with a plurality of avoiding notches communicating with the second magnetic gap, and an elastic part of a centering piece corresponds to an avoiding notch.

[0021] The utility model discloses still propose a kind of electronic equipment, including aforementioned sound production device.

[0022] In the technical scheme of the utility model, the piece structure can include a plurality of centering pieces distributed along the outer periphery of the second voice coil, and the plurality of centering pieces can be used to provide stability for the vibration system simultaneously, to avoid shaking and polarization of the vibration system, and effectively improve the running stability of the vibration system;The piece structure is reused as an electrical connection structure to realize the electrical connection between the voice coil assembly and the external power supply, without the need to increase additional electrical connection structure, and meanwhile, the first voice coil and the second voice coil are integrally wound by one wire, the first voice coil and the second voice coil can maintain a conductive relationship, and the first voice coil and the second voice coil can not be provided with two wires respectively, but one lead-in wire and one lead-out wire can be provided on the whole first voice coil and second voice coil, and the electrical connection points on the piece structure can also be simplified to two. In this way, the structure of the sound production device can be simplified, the internal space of the sound production device is facilitated to be arranged, and meanwhile, the size of the sound production device is also reduced, to ensure the miniaturization of the sound production device. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creating labor.

[0024] Figure 1 It is an explosion structure schematic view of an embodiment of the sound production device of the utility model;

[0025] Figure 2 It is a structure schematic view of a voice coil assembly of an embodiment of the sound production device of the utility model;

[0026] Figure 3 It is a structure schematic view of a first piece of an embodiment of the sound production device of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of an embodiment of the second support piece of the sound-generating device of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of an embodiment of the second frame of the sound-generating device of this utility model;

[0029] Figure 6 This is a schematic diagram of a partial structural assembly state of an embodiment of the sound-generating device of this utility model;

[0030] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0031] Figure 8 for Figure 6 Another enlarged view of a section;

[0032] Figure 9 This is a view of the sound-generating device of this utility model from the perspective of the vibration direction of the vibration system.

[0033] Figure 10 for Figure 9 A cross-sectional schematic diagram of an embodiment cut along vv;

[0034] Figure 11 This is a schematic diagram of the structure of a first-side washer of the sound-generating device of this utility model.

[0035] Explanation of icon numbers:

[0036] 100. Outer shell;

[0037] 200. Magnetic circuit system; 201. First magnetic gap; 202. Second magnetic gap; 210. Magnetic yoke;

[0038] 220. Central magnetic circuit section; 221. Central magnet; 222. Central washer;

[0039] 230. First side magnetic circuit section; 231. First side magnet; 232. First side washer; 2321. Avoidance structure;

[0040] 240. Second side magnetic circuit section; 241. Second side magnet; 242. Second side washer; 243. Avoidance gap;

[0041] 300. Vibration system; 310. Diaphragm; 311. Diaphragm body; 312. Vibrating plate;

[0042] 320. First voice coil; 321. First frame; 325. Lead wire; 326. Connecting wire;

[0043] 330. Second voice coil; 331. Second frame;

[0044] 3311, skeleton body; 3312, skeleton extension piece;

[0045] 340, first support piece; 341, first inner connecting part; 3413, connecting step; 3414, adapter section; 342, first outer connecting part; 343, second elastic part;

[0046] 350, second support piece; 351, second inner connecting part; 352, second outer connecting part; 353, second elastic part.

[0047] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0049] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0050] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0051] The utility model provides a kind of sound production device.

[0052] With reference to Figure 1 , Figure 2 And Figures 6 to 10In an embodiment of the utility model, the sound production device comprises

[0053] The shell 100;

[0054] The magnetic circuit system 200 is provided with a first magnetic gap 201 and a second magnetic gap 202 which are arranged in the inside to the outside;

[0055] The vibration system 300 comprises a diaphragm 310, a voice coil assembly and a support structure, the diaphragm 310 is arranged oppositely to the magnetic circuit system 200, the shell 100 is connected to the magnetic circuit system 200 and the diaphragm 310, the voice coil assembly comprises a first voice coil 320 and a second voice coil 330, the upper end of the first voice coil 320 is fixed to the diaphragm 310, and the lower end is arranged correspondingly to the first magnetic gap 201, the upper end of the second voice coil 330 is fixed to the diaphragm 310, and the lower end is arranged correspondingly to the second magnetic gap 202, the first voice coil 320 and the second voice coil 330 are integrally wound by a wire, the first voice coil 320 is connected to the second voice coil 330 through a communication wire 326, the voice coil assembly is electrically connected to an external power supply through the support structure, and the support structure is connected to the shell 100 and the second voice coil 330 respectively. Wherein, the diaphragm 310 can comprise a diaphragm body 311 and a vibrating plate 312, the diaphragm body 311 is provided with an inner ring hole in the center, and the vibrating plate 312 is arranged in the inner ring hole and connected to the diaphragm body 311.

[0056] In the technical scheme of the utility model, the support structure can comprise a plurality of centering supports which are distributed along the outer periphery of the second voice coil 330, the plurality of centering supports can be used to provide stability maintaining force for the vibration system 300 at the same time, so that the vibration system 300 is prevented from shaking and polarizing, and the running stability of the vibration system is effectively improved; the support structure is reused as an electrical connection structure, so that the electrical connection between the voice coil assembly and the external power supply is realized, and additional electrical connection structures are not needed, meanwhile, the first voice coil 320 and the second voice coil 330 are integrally wound by a wire, the first voice coil 320 and the second voice coil 330 can maintain a conduction relationship, the first voice coil 320 and the second voice coil 330 can not be provided with two wires 325 respectively, and the first voice coil 320 and the second voice coil 330 can be provided with one lead-in wire and one lead-out wire as a whole, and the electrical connection points on the support structure can also be simplified to two. In this way, the structure of the sound production device can be simplified, the layout of the internal space of the sound production device is facilitated, meanwhile, the size of the sound production device is also reduced, and the miniaturization of the sound production device is guaranteed.

[0057] It should be noted that the up-down direction in the utility model scheme is the direction of the sound production device in Figure 1 And Figure 10The state shown in the definition, substantially refers to the vibration direction of the vibration system 300, the diaphragm 310 is set in the upper position, the magnetic circuit system 200 is set in the lower position, the upper end of the voice coil is towards the diaphragm 310, and the lower end is away from the diaphragm 310. In addition, the lower end of the first voice coil 320 is arranged corresponding to the first magnetic gap 201, and the lower end of the second voice coil 330 is arranged corresponding to the second magnetic gap 202. It can be understood that the lower end of the first voice coil 320 can be inserted into the first magnetic gap 201, of course, the lower end of the first voice coil 320 can also be located above the first magnetic gap 201. Similarly, the lower end of the second voice coil 330 can also be inserted into the second magnetic gap 202, or can be located above the second magnetic gap 202.

[0058] In an embodiment, referring to Figure 2 , the first voice coil 320 and the second voice coil 330 are connected by a segment of the communication wire 326, and the two segments of the lead wire 325 of the voice coil assembly include the first lead wire 325 connected to the first voice coil 320 and the second lead wire 325 connected to the second voice coil 330. That is, one wire is wound to form one of the first voice coil 320 and the second voice coil 330, and the other wire is wound to form the other of the first voice coil 320 and the second voice coil 330. In this way, the first voice coil 320 and the second voice coil 330 are easily formed and the structural stability of the first voice coil 320 and the second voice coil 330 is ensured. One of the first lead wire 325 and the second lead wire 325 is used to input current to the voice coil assembly, and the other is used to output current from the voice coil assembly. Connecting the first lead wire 325 and the second lead wire 325 to the support structure can connect the voice coil assembly to an external power supply through the circuit on the support structure.

[0059] In an embodiment, referring to Figure 1 , the support structure includes a plurality of centering supports (such as Figure 1 the first support 340 and the second support 350) spaced apart along the outer periphery of the second voice coil 330. One end of each of the centering supports is connected to the shell, and the other end of each of the centering supports is connected to the second voice coil 330. In this way, the second voice coil 330 can be provided with a stabilizing force in the circumferential direction by the plurality of centering supports, so that the vibration system 300 can be limited by the centering supports at multiple positions in the circumferential direction, thereby better avoiding shaking and deflection of the vibration system 300. Of course, in other embodiments, the support structure can also be provided in other forms, for example, a long strip-shaped support can be provided, and the two ends are connected to the radial two sides of the second voice coil 330, the radial two sides of the first voice coil 320 are connected between the two ends of the support, and the middle part of the support extends downward and is connected to the magnetic circuit system 200.

[0060] In an embodiment, referring to Figure 1、 Figure 3 and Figure 4 The plurality of centering petals include a first petal 340 and a plurality of second petals 350. The first petal 340 includes a first outer connecting portion 342, a first elastic portion 343, and a first inner connecting portion 341. The second petals 350 include a second outer connecting portion 352, a second elastic portion 353, and a second inner connecting portion 351. The first outer connecting portion 342 and the second outer connecting portion 352 are connected to the outer shell 100. The first inner connecting portion 341 and the first elastic portion 343 are located in different horizontal planes. The first inner connecting portion 341 is connected to the upper end of the second voice coil 330 and extends to at least between the first voice coil 320 and the second voice coil 330 to be electrically connected to the lead wire 325 of the first voice coil 320. The second inner connecting portion 351 is connected to the lower end of the second voice coil 330 and is electrically connected to the lead wire 325 of the second voice coil 330. The first elastic portion 343 and the second elastic portion 353 can include at least one bend, which can be bent in the horizontal direction or in the vibration direction of the vibration system, so that the first elastic portion 343 and the second elastic portion 353 have the ability to deform and recover from deformation. In addition, the second inner connecting portion 351 on a second petal 350 is electrically connected to the lead wire 325 of the second voice coil 330. The second petal 350 is preferably close to the first petal 340, so that the electrical connection structure on the outer shell 100 can be relatively concentrated, facilitating external line access. In this way, under the action of the first petal 340 and the second petal 350, the second voice coil 330 can be relatively uniformly subjected to a stabilizing force in the circumferential direction, to ensure smooth vibration of the vibration system 300, thereby ensuring the sound performance of the sound production device.

[0061] It can be understood that the horizontal direction is parallel to the extension direction of the diaphragm 310. It can be understood that according to the winding process requirements of the voice coil, the two leads of the voice coil are usually not in the same horizontal plane. Since the first elastic part 343 and the first inner connecting part 341 are located in different horizontal planes, the electrical connection between the spider structure and the first lead and the second lead can be facilitated. Moreover, the above arrangement can also make the first elastic part 343 not easily interfere with the diaphragm 310, and is beneficial to make the natural resonance frequency of the centering spider far away from the working frequency band of the sound generating device, thereby reducing the influence of unnecessary resonance on the sound quality, and can also disperse the stress distribution on the first spider 340, avoid material fatigue or damage due to long-term use, and improve the durability of the first spider 340 and the reliability of the entire sound generating device. The second elastic part 353 and the second inner connecting part 351 can be located in the same horizontal plane to reduce the space occupied by the second spider 350 in the vertical direction (i.e., the vibration direction of the vibration system 300), while facilitating the connection between the second outer connecting part 352 and the shell. The second elastic part 353 and the second inner connecting part 351 can also be located in different horizontal planes to make the second spider 350 have a suitable natural resonance frequency and disperse the stress distribution on the second spider 350.

[0062] The first spider 340 can extend to between the first voice coil 320 and the second voice coil 330, i.e., be connected only to the second voice coil 330, extend to the position of the first voice coil 320, be clamped between the first voice coil 320 and the diaphragm 310, or be connected to the lower end of the first voice coil 320 to be connected to the first voice coil 320 and the second voice coil 330 at the same time. Of course, in other embodiments, each spider can be connected to the first voice coil 320 and the second voice coil 330 at the same time, one spider can be connected to the leads 325 of the first voice coil 320 and the second voice coil 330 at the same time, or the first spider 340 can not be connected to the second voice coil 330 and be suspended below the second voice coil 330 to avoid the second voice coil 330 to connect to the first voice coil 320.

[0063] In an embodiment, please refer to Figures 6 to 10 , the vibration system 300 further comprises a first skeleton 321, and the upper end of the first voice coil 320 is connected to the diaphragm 310 through the first skeleton 321. The vibration system 300 further comprises a second skeleton 331, and the upper end of the second voice coil 330 is connected to the diaphragm 310 through the second skeleton 331. In this way, the position of the voice coil in the corresponding magnetic gap can be adjusted through the skeleton to ensure that the voice coil is located in the region with high magnetic field density, thereby improving the sound generating sensitivity of the sound generating device.

[0064] In an embodiment, please refer to Figure 3 ,Figure 4 and Figures 6 to 10 The first inner connecting portion 341 is provided with a connecting step 3413, and the second skeleton 331 is clamped between the connecting step 3413 and the diaphragm 310. In this way, the connecting step 3413 can provide positioning for the connection between the second skeleton 331 and the first inner connecting portion 341, so that the first inner connecting portion 341 accurately connects the second skeleton 331, thereby ensuring the vibration stability of the second voice coil 330, and thus ensuring the vibration stability of the vibration system 300. At the same time, it is ensured that the first inner connecting portion 341 can be electrically connected to the lead wire 325 of the first voice coil 320 at the appropriate position, thereby ensuring the stability of the electrical connection between the first voice coil 320 and the external power supply. The step surface of the connecting step 3413 can be attached to the inner circumferential side of the second skeleton 331 to improve the stability of the connection between the first support sheet 340 and the second skeleton 331.

[0065] In an embodiment, please refer to Figure 3 , Figure 4 and Figures 6 to 10 The first inner connecting portion 341 further includes an adapter section 3414, at least part of the adapter section 3414 extends along the vibration direction of the vibration system 300, and the two ends of the adapter section 3414 are connected to the elastic portion (i.e. the first elastic portion 343) of the first support sheet 340 and the connecting step 3413, respectively. In this way, the first elastic portion 343 and the first inner connecting portion 341 can be located at different levels, and the first elastic portion 343 is less likely to interfere with the diaphragm 310. Moreover, the first elastic portion 343 and the first inner connecting portion 341 can function as centering at different positions for the vibration system 300, which can help to ensure that the vibration system 300 moves accurately in a straight line in the vertical direction, reducing deflection or lateral displacement, thereby improving the running stability of the sound generating device and enhancing the sound generating effect. In addition, the adapter section 3414 can separate the positions at which the first elastic portion 343 and the first inner connecting portion 341 connect the second voice coil 330, which can facilitate the electrical connection between the support sheet structure and the lead wire of the voice coil assembly. Of course, in other embodiments, the first elastic portion 343 itself can extend along the vibration direction of the vibration system 300.

[0066] In an embodiment, please refer to Figures 3 to 10The second skeleton 331 includes a ring-shaped skeleton body 3311 and skeleton extension pieces 3312 distributed along the circumferential direction of the skeleton body 3311. The top of the second voice coil 330 is connected to the skeleton body 3311, and the adapter section 3414 is connected to the skeleton extension pieces 3312. In this way, the contact area of the first inner connecting part 341 and the second skeleton 331 can be increased, so that the first support sheet 340 can reliably transmit the stabilizing force to the second voice coil 330. At the same time, the structural strength of the second skeleton 331 is higher, and the adapter section 3414 of the first support sheet 340 is attached to the skeleton extension piece 3312, which can improve the structural stability of the first support sheet 340. Of course, in other embodiments, the structural stability of the first support sheet 340 can be ensured by strengthening the structural strength of the adapter section 3414.

[0067] Specifically, the adapter section 3414 and the skeleton extension piece 3312 extend along the vibration direction of the vibration system 300. That is, the adapter section 3414 and the skeleton extension piece 3312 have little or no radial extension, which is conducive to reducing the radial size of the sound production device and facilitating the miniaturization design of the sound production device. Of course, in other embodiments, the adapter section 3414 and the skeleton extension piece 3312 can also have a portion extending in the horizontal direction. Optionally, the skeleton extension piece 3312 can be one or more, and the number of skeleton extension pieces 3312 can be the same as the number of first support sheets 340.

[0068] The adapter section 3414 can be located on the inner side or the outer side of the second voice coil 330, and the skeleton extension piece 3312 corresponding to the adapter section 3414 is located on the inner side or the outer side of the second voice coil 330 for the adapter section 3414 to be attached and connected. Without loss of generality, the adapter section 3414 and the skeleton extension piece 3312 are adhesively connected to ensure reliable fixation of the adapter section 3414 and the skeleton extension piece 3312. Currently, the adapter section 3414 and the skeleton extension piece 3312 can also be fixed by clamping.

[0069] Specifically, when the adapter segment 3414 is located outside the second voice coil 330, the skeleton extension 3312 will also be located outside the second voice coil 330, at this time, the adapter segment 3414 will be between the second voice coil 330 and the skeleton extension 3312, the position of the first connecting portion connecting the second voice coil 330 will be between the position of the first connecting portion connecting the adapter segment 3414 and the first voice coil 320; when the adapter segment 3414 is located inside the second voice coil 330, the skeleton extension 3312 will also be located inside the second voice coil 330, at this time, the adapter segment 3414 can be located between the second voice coil 330 and the skeleton extension 3312, or the skeleton extension 3312 can be located between the second voice coil 330 and the adapter segment 3414, and the position of the first connecting portion connecting the adapter segment 3414 will be between the position of the first connecting portion connecting the first voice coil 320 and the second voice coil 330.

[0070] In an embodiment, referring to Figure 1 and Figures 6 to 10 , the magnetic circuit system 200 comprises a magnetic yoke 210, a center magnetic circuit portion 220, a first side magnetic circuit portion 230 and a second side magnetic circuit portion 240 arranged on the same side of the magnetic yoke 210, the first side magnetic circuit portion 230 is arranged around the center magnetic circuit portion 220 and forms a first magnetic gap 201 with the center magnetic circuit portion 220, the second side magnetic circuit portion 240 is arranged around the first side magnetic circuit portion 230 and forms a second magnetic gap 202 with the first side magnetic circuit portion 230, the second side magnetic circuit portion 240 is provided with a plurality of avoidance notches 243 communicating with the second magnetic gap 202, and an elastic portion (including the first elastic portion 343 of the first supporting sheet 340 and the second elastic portion 353 of the second supporting sheet 350) of a centering supporting sheet is arranged corresponding to one of the avoidance notches 243. Without loss of generality, the center magnetic circuit portion 220 comprises a center magnet 221 and a center armature 222, the first side magnetic circuit portion 230 comprises a first side magnet 231 and a first side armature 232, and the second side magnetic circuit portion 240 comprises a second side magnet 241 and a second side armature 242.

[0071] In this way, the first side magnetic circuit portion 230 is used as a common magnetic circuit structure of the first magnetic gap 201 and the second magnetic gap 202, which simplifies the structure of the magnetic circuit system 200 and can reduce the production cost of the sound production device, and at the same time, is conducive to reducing the size of the sound production device in the radial direction. Of course, in other embodiments, the first magnetic gap 201 and the second magnetic gap 202 can also be constructed by two independent magnetic circuit groups, and the center magnetic circuit structure of the second magnetic gap 202 can be stacked on the side magnetic circuit structure of the first magnetic gap 201, which can also achieve the purpose of reducing the radial size.

[0072] In the embodiment, the first elastic part 343 and the second elastic part 353 can be avoided by the avoiding gap 243, and when the first elastic part 343 is driven to move in the vibration direction of the vibration system 300, the avoiding gap 243 can provide sufficient movement space for the first elastic part 343 and the second elastic part 353, so that the first elastic part 343 and the second elastic part 353 are not interfered, thereby ensuring that the movement of the voice coil and the diaphragm 310 is not affected. Specifically, the second side magnet 241 and the second side vane 242 are both provided with the avoiding gap 243. Further, the first side vane 232 can also be provided with an avoiding structure 2321 to avoid the first inner connecting part 341. In this way, the internal structure of the sound production device can be arranged compactly and without interference. Of course, in other embodiments, the first elastic part 343 and the magnetic circuit structure can be staggered.

[0073] Optionally, along the vibration direction of the vibration system, the first side vane 232 is provided with an avoiding groove for avoiding the communication wire, which can effectively avoid the communication wire, thereby preventing the communication wire from impacting the magnetic circuit system and generating abnormal sound. Further, the avoiding groove can be a blind hole groove or a through hole groove.

[0074] The utility model also proposes an electronic equipment, the electronic equipment includes sound production device, the specific structure of the sound production device refers to the above-mentioned embodiment, because the electronic equipment adopts all the technical schemes of the above-mentioned embodiment, therefore at least has all the beneficial effects brought by the technical scheme of the above-mentioned embodiment, here will not repeat. Optionally, the electronic equipment can be earphone, mobile phone, television, computer, Pad, smart wear equipment and the like, here is not limited.

[0075] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and all equivalent structural transformations made by the utility model specification and the attached drawings contents, or direct / indirect application in other related technical fields under the utility model concept of the utility model are included in the patent protection range of the utility model.

Claims

1. A sound producing device, characterized by, The application relates to a loudspeaker, which comprises: a shell; a magnetic circuit system provided with a first magnetic gap and a second magnetic gap arranged in sequence from inside to outside; and a vibration system comprising a diaphragm, a voice coil assembly and a bracket structure, the diaphragm being arranged opposite to the magnetic circuit system, the shell connecting the magnetic circuit system and the diaphragm, the voice coil assembly comprising a first voice coil and a second voice coil, the upper end of the first voice coil being fixed to the diaphragm, the lower end of the first voice coil being arranged corresponding to the first magnetic gap, the upper end of the second voice coil being fixed to the diaphragm, the lower end of the second voice coil being arranged corresponding to the second magnetic gap, the first voice coil and the second voice coil being integrally wound by a wire, the first voice coil being connected to the second voice coil through a communication wire, the voice coil assembly being electrically connected to an external power source through the bracket structure, and the bracket structure being connected to the shell and the second voice coil respectively.

2. The sound production device of claim 1, wherein The first voice coil and the second voice coil are connected through a section of the communication wire, and two sections of lead wires of the voice coil assembly comprise a first lead wire connected to the first voice coil and a second lead wire connected to the second voice coil.

3. The sound production device of claim 1, wherein The bracket structure comprises a plurality of centering brackets distributed along the outer periphery of the second voice coil, one end of each of the centering brackets being connected to the shell, and the other end of each of the centering brackets being connected to the second voice coil.

4. The sound production device of claim 3, wherein The plurality of centering brackets comprise a first bracket and a plurality of second brackets, the first bracket comprising a first outer connecting part, a first elastic part and a first inner connecting part, the second bracket comprising a second outer connecting part, a second elastic part and a second inner connecting part, the first outer connecting part and the second outer connecting part being connected to the shell, the first inner connecting part and the first elastic part being located in different horizontal planes, the first inner connecting part being connected to the upper end of the second voice coil and extending to at least between the first voice coil and the second voice coil to be electrically connected to the lead wire of the first voice coil, and the second inner connecting part being connected to the lower end of the second voice coil and being electrically connected to the lead wire of the second voice coil.

5. The sound production device of claim 4, wherein, The vibration system further comprises a first skeleton, and the upper end of the first voice coil is connected to the diaphragm through the first skeleton.

6. The sound production device of claim 4, wherein, The vibration system further comprises a second skeleton, and the upper end of the second voice coil is connected to the diaphragm through the second skeleton.

7. The sound production device of claim 6, wherein The first inner connecting part is provided with a connecting step, and the second skeleton is clamped between the connecting step and the diaphragm.

8. The sound production device of claim 7, wherein, The first inner connecting part further comprises an adapter section, at least part of the adapter section extending along the vibration direction of the vibration system, and the two ends of the adapter section being connected to the elastic part of the first bracket and the connecting step respectively.

9. The sound production device of claim 8, wherein, The second skeleton comprises a ring-shaped skeleton body and skeleton extension members distributed along the circumferential direction of the skeleton body, the top of the second voice coil being connected to the skeleton body, and the adapter section being connected to the skeleton extension members in a fit manner.

10. The sound production device of claim 9, wherein, The adapter section and the skeleton extension members both extend along the vibration direction of the vibration system; and / or, the adapter section is located between the skeleton extension members and the second voice coil; and / or, the adapter section and the skeleton extension members are both located outside the second voice coil; and / or, the adapter section and the skeleton extension members are connected in a bonding manner.

11. Sound production device according to any one of claims 3 to 10, characterized in that The magnetic circuit system comprises a magnetic yoke, a center magnetic circuit part, a first side magnetic circuit part and a second side magnetic circuit part arranged on the same side of the magnetic yoke, the first side magnetic circuit part is arranged around the center magnetic circuit part and a first magnetic gap is formed between the center magnetic circuit part and the first side magnetic circuit part, the second side magnetic circuit part is arranged around the first side magnetic circuit part and a second magnetic gap is formed between the first side magnetic circuit part and the second side magnetic circuit part, the second side magnetic circuit part is provided with a plurality of avoiding notches communicating with the second magnetic gap, and an elastic part of a centering piece is arranged in one avoiding notch.

12. An electronic device, comprising: A sound production device comprising any one of the devices according to claims 1 to 11.

Images