Sound production device and electronic equipment

Abstract

The utility model discloses a sounding device and an electronic device, and relates to the technical field of electroacoustic conversion, the sounding device comprises a mounting shell, a magnetic circuit system, a vibration system and a mounting cover, the mounting shell comprises a first shell and a second shell which are arranged in an included angle, and the first shell and the second shell define a mounting cavity; the magnetic circuit system is arranged in the mounting cavity and is provided with a first magnetic gap and a second magnetic gap; the vibration system comprises a first vibration assembly and a second vibration assembly, the second vibration assembly comprises a second vibrating diaphragm connected with the second shell and a second voice coil arranged corresponding to the second magnetic gap, the mounting cover covers the second vibrating diaphragm and is provided with a sound passing hole communicated with the second vibrating diaphragm, and the edge of the second vibrating diaphragm is fixedly arranged between the mounting cover and the second shell; according to the utility model, by arranging the mounting cover covering the second vibrating diaphragm, the bonding area of the second vibrating diaphragm is increased, and the sealing performance of edge connection of the second vibrating diaphragm can be improved, thereby improving the waterproof performance of the sound production device.

Description

Technical Field

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

[0002] With the development of the portable consumer electronic products market, miniature sound devices have been widely used, and with the multifunctional and miniaturized design of portable terminal electronic products, higher requirements are placed on the acoustic performance of miniature sounders.

[0003] In order to meet consumers' functional demands for diversified tones, technicians usually integrate the tweeter and the woofer together. Although this can solve the problems of miniaturization and diversified tones, it will cause the fixing space of the diaphragm to become increasingly limited, which can easily lead to low sealing at the joints of the diaphragm, resulting in air and water leakage at the joints of the diaphragm, thereby reducing the waterproof effect of the sound-generating device and making it difficult to meet the actual waterproof needs of electronic products. Utility Model Content

[0004] The main purpose of the utility model is to provide a sound-generating device and an electronic device, aiming to improve the sealing performance of the diaphragm connection.

[0005] In order to achieve the above-mentioned purpose, the sound-generating device proposed by the utility model comprises:

[0006] The mounting shell comprises a first shell and a second shell arranged at an angle, wherein the first shell and the second shell define a mounting cavity;

[0007] A magnetic circuit system is arranged in the installation cavity, and the magnetic circuit system has a first magnetic gap and a second magnetic gap;

[0008] A vibration system, the vibration system comprising a first vibration component and a second vibration component, the first vibration component comprising a first diaphragm connected to the first shell, and a first voice coil arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm connected to the second shell, and a second voice coil arranged corresponding to the second magnetic gap, the vibration direction of the first diaphragm and the vibration direction of the second diaphragm being arranged at an angle; and

[0009] The mounting cover is arranged on the second diaphragm and is provided with a sound hole communicating with the second diaphragm. The edge of the second diaphragm is fixedly arranged between the mounting cover and the second shell.

[0010] In one embodiment, the second shell is provided with a mounting recess, and an edge of the second diaphragm and an edge of the mounting cover are sequentially stacked in the mounting recess.

[0011] In one embodiment, the inner wall of the mounting groove forms a step structure, and the step structure has at least a first mounting platform extending along a first direction and a second mounting platform extending along a second direction, and the edges of the second diaphragm are respectively fixed to the first mounting platform and the second mounting platform.

[0012] In one embodiment, a glue dispensing step is provided on the edge of the mounting cover at a side facing away from the second diaphragm.

[0013] In one embodiment, at least a portion of the glue-dispensing step is flush with an outer edge of the mounting sink; and / or

[0014] At least a portion of the glue-dispensing step is lower than an outer edge of the mounting sink.

[0015] In one embodiment, the sound-emitting device further comprises a module shell disposed outside the mounting shell and the mounting cover, the module shell being provided with a first sound outlet hole communicating with the first diaphragm, and a second sound outlet hole communicating with the sound hole.

[0016] In one embodiment, the sound hole is connected to the second sound outlet hole, and a glue containing groove surrounding the sound hole is formed between the mounting cover and the module housing.

[0017] In one embodiment, along the vibration direction of the second voice coil, the outer edge of the sound hole of the mounting cover is configured as a glue-containing slope inclined in a direction away from the module housing, and the glue-containing groove is formed between the glue-containing slope and the module housing.

[0018] In one embodiment, at least a portion of the mounting cover is arranged in a raised shape, and the sound hole is arranged in the raised portion to form the adhesive-containing slope at the outer edge of the sound hole, and along the vibration direction of the second voice coil, the inner space of the mounting cover gradually decreases in the direction close to the sound hole; and / or

[0019] Along the vibration direction of the second voice coil, the sound output area of ​​the second sound output hole gradually increases in a direction away from the sound hole.

[0020] In one embodiment, the second sound outlet and the first sound outlet are arranged on the same side of the module housing; and / or

[0021] The first sound outlet holes are disposed on opposite sides of the second sound outlet hole.

[0022] In one embodiment, the magnetic circuit system comprises:

[0023] Magnetic yoke;

[0024] a first magnetic circuit portion, the first magnetic circuit portion is opposite to and spaced from the first vibration component, the first magnetic circuit portion comprises a central magnetic circuit portion and a side magnetic circuit portion provided on the magnetic conductive yoke, the side magnetic circuit portion is provided outside the central magnetic circuit portion and spaced from the central magnetic circuit portion to form a first magnetic gap; and

[0025] The second magnetic circuit portion is arranged on the magnetic yoke, opposite to and spaced from the second vibration component, and the second magnetic circuit portion is located on the side of the side magnetic circuit portion facing away from the first vibration component, and cooperates with the side magnetic circuit portion to form a second magnetic gap.

[0026] In one embodiment, the first vibration component is used for producing bass sounds, and the second vibration component is used for producing treble sounds;

[0027] And / or, the vibration direction of the first vibration component is arranged perpendicular to the vibration direction of the second vibration component;

[0028] And / or, the second voice coil is a flat voice coil.

[0029] The utility model also provides an electronic device, comprising a device housing and the above-mentioned sound-generating device, wherein the sound-generating device is arranged in the device housing.

[0030] The technical solution of the utility model adopts a mounting cover to cover the second diaphragm, so that the edge of the second diaphragm is fixed between the mounting cover and the second shell. This can increase the bonding area of ​​the edge of the second diaphragm and improve the connection sealing of the second diaphragm, thereby reducing the probability of air and water leakage at the connection of the second diaphragm, thereby improving the acoustic performance of the sound-emitting device and solving the problem of waterproof failure of the sound-emitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 A schematic structural diagram of a first viewing angle of an embodiment of a sound-generating device provided by the utility model;

[0033] Figure 2 A schematic diagram of the structure of the sound-generating device provided by the utility model from a second viewing angle;

[0034] Figure 3 A schematic cross-sectional view of the sound-generating device provided by the utility model;

[0035] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0036] Figure 5 The present invention is a schematic diagram of the explosion structure of the sound-generating device provided by the utility model.

[0037] Description of Figure Numbers:

[0038] 100, mounting shell; 110, first shell; 120, second shell; 121, step structure; 121a, first mounting platform; 121b, second mounting platform; 200, magnetic circuit system; 210, first magnetic gap; 220, second magnetic gap; 230, magnetic yoke; 240, first magnetic circuit part; 241, center magnetic circuit part; 242, side magnetic circuit part; 300, vibration system; 310, first vibration component; 311, first diaphragm; 312, first voice coil; 320, second vibration component; 321, second diaphragm; 322, second voice coil; 400, mounting cover; 410, sound hole; 420, glue dispensing step; 430, glue-containing slope; 500, module housing; 510, first sound outlet; 520, second sound outlet.

[0039] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] 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.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "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 technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] With the development of the portable consumer electronic products market, miniature sound-generating devices have been widely used, and with the multifunctional and miniaturized design of portable terminal electronic products, higher requirements are placed on the vibroacoustic performance of miniature sounders.

[0044] In order to meet consumers' functional demands for diversified tones, technicians usually integrate the tweeter and the woofer together. Although this can solve the problems of miniaturization and diversified tones, it will cause the fixing space of the diaphragm to become increasingly limited, which can easily lead to low sealing at the joints of the diaphragm, resulting in air and water leakage at the joints of the diaphragm.

[0045] The utility model provides a sound-generating device which is applied to electronic devices, which may be mobile phones, stereos, computers, headphones, watches or televisions, etc., which are not limited here.

[0046] See also Figures 3 to 5In one embodiment of the utility model, the sound-generating device includes a mounting shell 100, a magnetic circuit system 200, a vibration system 300 and a mounting cover 400. The mounting shell 100 includes a first shell 110 and a second shell 120 arranged at an angle, and the first shell 110 and the second shell 120 define a mounting cavity; the magnetic circuit system 200 is arranged in the mounting cavity, and the magnetic circuit system 200 has a first magnetic gap 210 and a second magnetic gap 220; the vibration system 300 includes a first vibration component 310 and a second vibration component 320, and the first vibration component 310 includes a first shell 110 and a second shell 120. The first diaphragm 311 is connected to the second shell 120, and the first voice coil 312 is arranged corresponding to the first magnetic gap 210. The second vibration component 320 includes a second diaphragm 321 connected to the second shell 120, and a second voice coil 322 is arranged corresponding to the second magnetic gap 220. The vibration direction of the first diaphragm 311 and the vibration direction of the second diaphragm 321 are arranged at an angle. The mounting cover 400 is covered on the second diaphragm 321, and is provided with a sound hole 410 connected to the second diaphragm 321. The edge of the second diaphragm 321 is fixed between the mounting cover 400 and the second shell 120.

[0047] The technical solution of the utility model adopts a mounting cover 400 to cover the second diaphragm 321, so that the edge of the second diaphragm 321 is fixed between the mounting cover 400 and the second shell 120, thereby increasing the bonding area of ​​the edge of the second diaphragm 321, thereby increasing the connection sealing of the edge of the second diaphragm 321, thereby reducing the probability of air leakage and water leakage at the connection of the second diaphragm 321, thereby improving the acoustic performance of the sound-emitting device and solving the problem of waterproof failure of the sound-emitting device.

[0048] Secondly, an independent cavity can be formed between the mounting cover 400 and the second diaphragm 321, and sound can pass through the sound hole 410, which can reduce interference and thus improve acoustic performance.

[0049] In this embodiment, the second vibration component 320 is configured as a tweeter unit, that is, the second voice coil 322 is configured as a tweeter voice coil, and the area of ​​the second diaphragm 321 corresponding to the second voice coil 322 is designed to be smaller than the area of ​​the first diaphragm 311 corresponding to the first voice coil 312, and a mounting cover 400 is provided corresponding to the second diaphragm 321, so as to increase the airtightness of the connection of the second diaphragm 321 while achieving miniaturization.

[0050] It should be noted that since the area of ​​the first diaphragm 311 is larger in the present embodiment, the connection surface of the first diaphragm 311 is also larger, so the connection surface itself can be used to ensure the sealing of the connection. Of course, the present embodiment is not limited to this. In other embodiments, a sealing cover can also be provided corresponding to the first diaphragm 311, and the edge of the second diaphragm 311 is fixed between the first shell 110 and the sealing cover, so as to further improve the connection sealing of the first diaphragm 311.

[0051] Optionally, the first shell 110 and the second shell 120 are an integrally formed structure, which can not only improve the structural strength and stability of the mounting shell 100, but also simplify the overall structure of the sound-emitting device and improve assembly efficiency. It can be understood that the first shell 110 and the second shell 120 enclose a mounting cavity, and the mounting cavity can be a through cavity or a through groove structure. Optionally, the first shell 110 and the second shell 120 are arranged vertically.

[0052] The first vibration component 310 is opposite to the magnetic circuit system 200, and the second vibration component 320 is opposite to the magnetic circuit system 200, so that the first vibration component 310 and the second vibration component 320 share the magnetic circuit system 200, thereby improving the utilization rate of the magnetic field and reducing the cost of the sound-generating device.

[0053] In this embodiment, the magnetic circuit system 200 provides a magnetic field and a driving force for the first vibration component 310 and the second vibration component 320 to drive the first vibration component 310 and the second vibration component 320 to vibrate and generate sound, thereby improving the sound effect.

[0054] The sound-generating device of the utility model is configured such that the mounting shell 100 is configured as a first shell body 110 and a second shell body 120 which are configured at an angle to each other and enclose a mounting cavity, thereby utilizing the mounting cavity to mount and fix the magnetic circuit system 200, and simultaneously the vibration system 300 is configured with a first vibration component 310 and a second vibration component 320, wherein the first diaphragm 311 of the first vibration component 310 is connected to the first shell body 110, the first voice coil 312 of the first vibration component 310 is configured corresponding to the first magnetic gap 210, the second diaphragm 321 of the second vibration component 320 is connected to the second shell body 120, and the second voice coil 322 of the second vibration component 320 is configured corresponding to the second magnetic gap 220, so that the magnetic circuit system 200 is utilized to simultaneously provide a magnetic field and a driving force for the first vibration component 310 and the second vibration component 320, so as to improve the utilization rate of the magnetic field and reduce the cost at the same time.

[0055] The vibration direction of the first vibration component 310 and the vibration direction of the second vibration component 320 are further set to be at an angle, so that the vibration system 300 can form two independent vibration radiation surfaces set at an angle, which not only realizes multifunctional applications but also effectively improves the sound effect.

[0056] Optionally, the second shell 120 is provided with a mounting groove, and the edge of the second diaphragm 321 and the edge of the mounting cover 400 are stacked in the mounting groove in sequence; it can be understood that the edge of the second diaphragm 321 is set in the mounting groove, and the groove wall facing the notch of the mounting groove and the end surface of the mounting cover 400 respectively press against the opposite side walls of the edge of the second diaphragm 321, thereby increasing the bonding area of ​​the edge of the second diaphragm 321, thereby improving the connection sealing of the edge of the second diaphragm 321. Of course, the present design is not limited to this. In other embodiments, the second shell 120 may not be provided with a mounting groove, and the side walls of the mounting cover 400 and the second shell 120 may be directly stacked and set on the opposite sides of the edge of the second diaphragm 321.

[0057] Optionally, the edge of the second diaphragm 321 and the edge of the mounting cover 400 are sequentially bonded and stacked in the mounting groove, so that not only can the edge of the second diaphragm 321, the mounting cover 400 and the second shell 120 be bonded together by the glue, but it is also helpful to use the glue to improve the sealing of the edge of the second diaphragm 321, thereby further reducing the probability of air leakage and water leakage at the connection of the second diaphragm 321, thereby improving the acoustic performance of the sound-emitting device and solving the problem of waterproof failure of the sound-emitting device.

[0058] Furthermore, the inner wall of the mounting groove forms a step structure 121, and the step structure 121 has at least a first mounting platform 121a extending along the first direction and a second mounting platform 121b extending along the second direction. The edges of the second diaphragm 321 are respectively fixed to the first mounting platform 121a and the second mounting platform 121b. It can be understood that the edges of the second diaphragm 321 are respectively fixed to the first mounting platform 121a and the second mounting platform 121b. In this way, the connection contact area between the second diaphragm 321 and the groove wall of the mounting groove can be increased, thereby improving the connection sealing between the edge of the second diaphragm 321 and the groove wall of the mounting groove, thereby reducing the probability of air leakage and water leakage at the connection of the second diaphragm 321, thereby improving the acoustic performance of the sound-generating device and solving the problem of waterproof failure of the sound-generating device.

[0059] Optionally, a glue-dispensing step 420 is provided on the edge of the mounting cover 400 on the side away from the second diaphragm 321; it is understandable that the glue-dispensing step 420 can be applied with glue, and when the edge of the second diaphragm 321 and the edge of the mounting cover 400 are sequentially stacked in the mounting groove, a connecting gap will be formed between the mounting cover 400 and the groove wall of the mounting groove. In this scheme, a glue-dispensing step 420 is provided on the edge of the mounting cover 400 on the side away from the second diaphragm 321, and glue is applied to the glue-dispensing step 420 to seal the connecting gap between the mounting cover 400 and the groove wall of the mounting groove, thereby improving the connection sealing between the mounting cover 400 and the groove wall of the mounting groove. Since the edge of the second diaphragm 321 is arranged between the groove bottom wall of the mounting groove and the mounting cover 400, the sealing of the edge of the second diaphragm 321 is also improved.

[0060] Furthermore, at least a portion of the glue-dispensing step 420 is flush with the outer edge of the mounting groove, which is conducive to allowing the glue-dispensing step 420 to accommodate more glue, thereby further improving the connection sealing between the mounting cover 400 and the groove wall of the mounting groove, and further improving the sealing of the edge of the second diaphragm 321.

[0061] In some embodiments of the present invention, at least a portion of the glue-dispensing step 420 is lower than the outer edge of the mounting groove; this is conducive to allowing the glue-dispensing step 420 to accommodate more glue, thereby further improving the connection sealing between the mounting cover 400 and the groove wall of the mounting groove, and further improving the sealing of the edge of the second diaphragm 321.

[0062] Optionally, the sound-generating device further comprises a module housing 500 disposed outside the mounting shell 100 and the mounting cover 400, wherein the module housing 500 is provided with a first sound outlet 510 connected to the first diaphragm 311, and a second sound outlet 520 connected to the sound hole 410. In this way, the sound generation of the first diaphragm 311 and the second diaphragm 321 does not affect each other, thereby improving the acoustic performance of the sound-generating device. Of course, the present design is not limited thereto, and in other embodiments, the module housing 500 may also be provided with a sound outlet, which is respectively connected to the first diaphragm 311 and the second diaphragm 321.

[0063] It should be noted that the module housing 500 is provided with a sealing boss at the connection position corresponding to the edge of the first shell 110 and the first diaphragm 311 , and the edge of the first diaphragm 311 is provided between the sealing boss and the first shell 110 , thereby improving the connection sealing of the first diaphragm 311 .

[0064] Optionally, the sound hole 410 is connected to the second sound outlet hole 520, and a glue groove is formed around the sound hole 410 between the mounting cover 400 and the module housing 500. It can be understood that the glue groove can be used for setting glue, which can improve the waterproof performance around the sound hole 410.

[0065] Furthermore, along the vibration direction of the second voice coil 322, the outer edge of the sound hole 410 of the mounting cover 400 is configured as a glue-containing inclined surface 430 inclined in a direction away from the module housing 500, and the glue-containing groove is formed between the glue-containing inclined surface 430 and the module housing 500, so that the glue-containing groove can be added without affecting the structure of the module housing 500, thereby reducing the mold opening cost. Of course, the present design is not limited to this. In other embodiments, along the vibration direction of the second voice coil 322, the inner wall surface of the module housing 500 can also be a sol inclined surface inclined in a direction close to the mounting cover 400, and a glue-containing groove is formed between the sol inclined surface and the mounting cover 400.

[0066] Furthermore, at least a portion of the mounting cover 400 is arranged in a raised shape, and the sound hole 410 is arranged in the raised portion to form the glue-containing slope 430 on the outer edge of the sound hole 410, and along the vibration direction of the second voice coil 322, the inner space of the mounting cover 400 gradually decreases in the direction close to the sound hole 410. It can be understood that at least a portion of the mounting cover 400 is arranged in a raised shape, which is convenient for forming the glue-containing slope 430, while making the internal space of the mounting cover 400 larger, so that the mounting cover 400 provides a larger vibration space for the second diaphragm 321, which is beneficial to improving the acoustic performance of the second diaphragm 321.

[0067] Reference Figures 1 to 3 Optionally, along the vibration direction of the second voice coil 322 , the sound output area of ​​the second sound output hole 520 gradually increases in the direction away from the sound hole 410 ; this can improve the high-frequency acoustic performance of the second diaphragm 321 .

[0068] Optionally, the second sound outlet hole 520 and the first sound outlet hole 510 are arranged on the same side of the module housing 500; this can improve the acoustic performance of the sound-emitting device.

[0069] Furthermore, the first sound outlet holes 510 are disposed on opposite sides of the second sound outlet hole 520 ; this can further improve the acoustic performance of the sound-emitting device.

[0070] Optionally, the magnetic circuit system 200 includes a magnetic yoke 230, a first magnetic circuit portion 240 and a second magnetic circuit portion, the first magnetic circuit portion 240 is opposite to and spaced from the first vibration component 310, the first magnetic circuit portion 240 includes a central magnetic circuit portion 241 and a side magnetic circuit portion 242 arranged on the magnetic yoke 230, the side magnetic circuit portion 242 is arranged on the outside of the central magnetic circuit portion 241, and is spaced from the central magnetic circuit portion 241 to form a first magnetic gap 210; the second magnetic circuit portion is arranged on the magnetic yoke 230, opposite to and spaced from the second vibration component 320, the second magnetic circuit portion is located on the side of the side magnetic circuit portion 242 facing away from the first vibration component 310, and cooperates with the side magnetic circuit portion 242 to form a second magnetic gap 220.

[0071] This solution provides a first magnetic gap 210 in the first magnetic circuit portion 240, thereby utilizing the first magnetic gap 210 to provide an escape and vibration space for the first vibration component 310. By arranging the second magnetic circuit portion on the side of the first magnetic circuit portion 240 facing away from the first vibration component 310, and being opposite to and spaced from the second vibration component 320, the second magnetic circuit portion cooperates with the first magnetic circuit portion 240 to form the second magnetic gap 220, thereby utilizing the second magnetic gap 220 to provide an escape and vibration space for the second vibration component 320, and allowing the first vibration component 310 and the second vibration component 320 to share part of the first magnetic circuit portion 240, thereby improving the magnetic field utilization rate of the magnetic circuit system 200 and effectively reducing the cost.

[0072] The magnetic yoke 230 of the magnetic circuit system 200 provides an installation and fixing basis for the first magnetic circuit part 240 and the second magnetic circuit part. The first magnetic circuit part 240 and the second magnetic circuit part are arranged on the side of the magnetic yoke 230 facing the mounting shell 100. The magnetic circuit system 200 is connected to the first shell 110 and the second shell 120 of the mounting shell 100 through the first magnetic circuit part 240 and the second magnetic circuit part.

[0073] It can be understood that the first magnetic circuit portion 240 and the second magnetic circuit portion can be connected to the first shell 110 and the second shell 120 of the mounting shell 100 by bonding, welding, etc., which is not limited here.

[0074] Optionally, the first vibration component 310 is used for bass sounding, and the second vibration component 320 is used for treble sounding; in this way, the bandwidth of the sound-generating device can be expanded, making the timbre of the sound-generating device richer and the sound quality better.

[0075] Optionally, the vibration direction of the first vibration component 310 is arranged perpendicular to the vibration direction of the second vibration component 320; in this way, the vibration system 300 can form two independent vibration radiation surfaces arranged at an angle of 90°, which not only realizes multifunctional applications but also effectively improves the sound effect.

[0076] Optionally, the second voice coil 322 is formed as a flat voice coil; the second voice coil 322 is a square or racetrack ring structure. It can be understood that the second voice coil 322 has two long axis sides and two short axis sides connected end to end, that is, the two short axis sides of the second voice coil 322 are opposite and spaced, and the two long axis sides are opposite and spaced, so that the long axis side and the short axis side are connected end to end to form a ring structure.

[0077] Among them, the flat voice coil has a high space factor. In the same space, the flat voice coil can more effectively utilize the second magnetic gap 220, thereby improving the efficiency and performance of the second voice coil 322. Secondly, the flat voice coil has a high magnetic gap utilization rate. The use of a flat voice coil helps to improve the sensitivity of the second voice coil 322, making the sound more delicate and clear. Next, the flat voice coil is light in weight, small in size, and occupies less space. Configuring the second voice coil 322 as a flat voice coil is more convenient during the manufacturing and installation process, and can also reduce the volume of the sound-generating device. At the same time, the light weight of the second voice coil 322 also helps to reduce the resistance of the second voice coil 322 during movement, further improving the sound quality performance. Furthermore, due to the high sensitivity and transducer efficiency of the flat voice coil, the second voice coil 322 can more accurately restore the detailed information in the audio signal, making the sound more delicate and real.

[0078] The utility model also provides an electronic device, which includes a sound-generating device and a device housing. The specific structure of the sound-generating device refers to the above embodiments. Since the electronic device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The sound-generating device is arranged in the device housing.

[0079] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that: include: The mounting shell comprises a first shell and a second shell arranged at an angle, wherein the first shell and the second shell define a mounting cavity; A magnetic circuit system is arranged in the installation cavity, and the magnetic circuit system has a first magnetic gap and a second magnetic gap; A vibration system, the vibration system comprising a first vibration component and a second vibration component, the first vibration component comprising a first diaphragm connected to the first shell, and a first voice coil arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm connected to the second shell, and a second voice coil arranged corresponding to the second magnetic gap, the vibration direction of the first diaphragm and the vibration direction of the second diaphragm being arranged at an angle; and The mounting cover is arranged on the second diaphragm and is provided with a sound hole communicating with the second diaphragm. The edge of the second diaphragm is fixedly arranged between the mounting cover and the second shell.

2. The sound-generating device according to claim 1, characterized in that: The second shell is provided with a mounting recessed groove, and the edge of the second diaphragm and the edge of the mounting cover are sequentially stacked in the mounting recessed groove.

3. The sound-generating device according to claim 2, characterized in that: The inner wall of the mounting groove forms a step structure, and the step structure has at least a first mounting platform extending along a first direction and a second mounting platform extending along a second direction. The edges of the second diaphragm are respectively fixed to the first mounting platform and the second mounting platform.

4. The sound generating device according to claim 2, characterized in that: A glue dispensing step is provided on the edge of the installation cover at a side away from the second diaphragm.

5. The sound generating device according to claim 4, characterized in that: At least part of the glue-dispensing step is flush with the outer edge of the mounting sink; and / or At least a portion of the glue-dispensing step is lower than an outer edge of the mounting sink.

6. The sound generating device according to claim 1, characterized in that: The sound-generating device further comprises a module shell arranged outside the mounting shell and the mounting cover, and the module shell is provided with a first sound outlet hole communicating with the first diaphragm and a second sound outlet hole communicating with the sound hole.

7. The sound generating device according to claim 6, characterized in that: The sound hole is connected to the second sound outlet hole, and a glue containing groove which is arranged around the sound hole is formed between the installation cover and the module shell.

8. The sound generating device according to claim 7, characterized in that: Along the vibration direction of the second voice coil, the outer edge of the sound hole of the mounting cover is configured as a glue-containing slope inclined in a direction away from the module housing, and the glue-containing groove is formed between the glue-containing slope and the module housing.

9. The sound-generating device according to claim 8, characterized in that: At least part of the mounting cover is arranged in a raised shape, and the sound hole is arranged in the raised part, so that the adhesive-containing slope is formed on the outer edge of the sound hole, and along the vibration direction of the second voice coil, the inner space of the mounting cover gradually decreases in the direction close to the sound hole; and / or Along the vibration direction of the second voice coil, the sound output area of ​​the second sound output hole gradually increases in a direction away from the sound hole.

10. The sound generating device according to claim 6, characterized in that: The second sound outlet and the first sound outlet are arranged on the same side of the module housing; and / or The first sound outlet holes are disposed on opposite sides of the second sound outlet hole.

11. The sound generating device according to claim 1, characterized in that: The magnetic circuit system comprises: Magnetic yoke; a first magnetic circuit portion, the first magnetic circuit portion is opposite to and spaced from the first vibration component, the first magnetic circuit portion comprises a central magnetic circuit portion and a side magnetic circuit portion provided on the magnetic conductive yoke, the side magnetic circuit portion is provided outside the central magnetic circuit portion and spaced from the central magnetic circuit portion to form a first magnetic gap; and The second magnetic circuit portion is arranged on the magnetic yoke, opposite to and spaced from the second vibration component, and the second magnetic circuit portion is located on the side of the side magnetic circuit portion facing away from the first vibration component, and cooperates with the side magnetic circuit portion to form a second magnetic gap.

12. The sound generating device according to any one of claims 1 to 11, characterized in that: The first vibration component is used for producing bass sounds, and the second vibration component is used for producing treble sounds; And / or, the vibration direction of the first vibration component is arranged perpendicular to the vibration direction of the second vibration component; And / or, the second voice coil is a flat voice coil.

13. An electronic device, characterized in that: The device comprises a device housing and a sound-generating device as claimed in any one of claims 1 to 12, wherein the sound-generating device is arranged in the device housing.

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