Vibration sound production module and electronic equipment

Abstract

The utility model discloses a vibration sounding module and electronic equipment, relates to electroacoustic equipment technical field, wherein the vibration sounding module comprises a module shell and a vibration sounding device, the module shell is provided with a first cavity, the vibration sounding device is arranged in the first cavity, the vibration sounding device comprises a sounding unit and a vibration unit connected with the sounding unit, and the first cavity is provided with a second cavity. The sounding unit comprises a vibrating diaphragm arranged in the first cavity and a first vibrating assembly arranged on the vibrating diaphragm, the vibrating diaphragm is used for dividing the first cavity into a front sound cavity and a rear sound cavity, and the vibrating unit comprises a motor shell arranged in the rear sound cavity and a second vibrating assembly arranged in the motor shell; the motor shell divides the rear sound cavity into a sound cavity body used for containing the sound absorption particles and a containing cavity used for containing the first vibration assembly and the second vibration assembly, and the cavity wall of the containing cavity is provided with a breathable isolation channel communicated with the sound cavity body. The vibration sounding module provided by the utility model has the advantages of simple structure and good low-frequency effect.

Description

Technical Field

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

[0002] With the development of electronic equipment technology and the continuous improvement of consumer demand, lightweight design is the current mainstream design trend of electronic equipment. In order to meet market demand, a vibration sound module arranged in an electronic device is proposed. The vibration sound module integrates a sound unit and a motor unit into one, and meets the needs of sound and vibration feedback at the same time, thereby saving space occupied by the electronic device.

[0003] At present, the vibration sound-generating module includes a module shell, a partition, and a vibration sound-generating device with a vibration sound-generating function and a vibration feedback function. The module shell has a first cavity, and the partition is arranged in the first cavity to separate the first cavity into a second cavity and a third cavity. The second cavity is used to accommodate cavity sound-absorbing particles, and the vibration sound-generating device is arranged in the third cavity. The partition is provided with a breathable isolation hole connecting the first cavity and the second cavity. However, the integration of the vibration sound-generating module is low, and the back cavity space of the vibration sound-generating module is small, and the space for filling the sound-absorbing particles is also small, which affects the low-frequency effect of the vibration sound-generating module. Utility Model Content

[0004] The main purpose of the utility model is to provide a vibration sound module, aiming to improve the integration of the vibration sound module.

[0005] To achieve the above purpose, the vibration sound module proposed in the utility model comprises:

[0006] A module housing having a first cavity; and

[0007] A vibration sound-generating device is arranged in the first cavity, the vibration sound-generating device includes a sound-generating unit and a vibration unit connected to the sound-generating unit, the sound-generating unit includes a diaphragm arranged in the first cavity, and a first vibration component arranged on the diaphragm, the diaphragm is used to separate the first cavity into a front sound cavity and a rear sound cavity, the vibration unit includes a motor housing arranged in the rear sound cavity, and a second vibration component arranged in the motor housing, the motor housing separates the rear sound cavity into a sound cavity body for accommodating sound-absorbing particles, and a accommodating cavity for accommodating the first vibration component and the second vibration component, and the cavity wall of the accommodating cavity is provided with an air-permeable isolation channel connected to the sound cavity body.

[0008] In one embodiment, the air-permeable isolation channel includes an air-permeable isolation hole provided in the motor housing.

[0009] In one embodiment, the aperture range of the air-permeable isolation hole is less than or equal to 0.15 mm;

[0010] And / or, the air-permeable isolation holes are arranged in the form of circular holes, square holes or polygonal holes.

[0011] In one embodiment, the sound cavity body is disposed around the receiving cavity.

[0012] In one embodiment, the motor housing has an opening facing the diaphragm, and the motor housing can cover the second vibration component through the opening. The module housing is also provided with a avoidance port connected to the first cavity, and the top wall of the motor housing extends into the avoidance port. The air-permeable isolation channel includes an air-permeable isolation hole provided on the outer peripheral surface of the motor housing.

[0013] In one embodiment, a plurality of the air-permeable isolation holes are provided, and the plurality of the air-permeable isolation holes are spaced apart in the circumferential direction of the motor housing.

[0014] In one embodiment, the vibration sound-generating device also includes a magnetic circuit system, the first vibration component includes a voice coil connected to the diaphragm, the second vibration component includes a driving coil elastically connected to the motor housing, the magnetic circuit system is provided with a magnetic gap corresponding to the voice coil, and the side of the magnetic circuit system facing away from the voice coil is arranged opposite to the driving coil to drive the driving coil to vibrate reciprocatingly.

[0015] In one embodiment, the magnetic circuit system includes a central magnetic portion and a side magnetic portion arranged on the periphery of the central magnetic portion, the side magnetic portion and the central magnetic portion are spaced apart to form the magnetic gap, the central magnetic portion includes a plurality of central magnets spaced apart along the vibration direction of the second vibration component, the driving coil includes two oppositely arranged connecting edges, and along the vibration direction of the first vibration component, the two connecting edges are oppositely arranged to the two adjacent central magnets.

[0016] In one embodiment, there are a plurality of driving coils, and the plurality of driving coils are spaced apart and distributed along the vibration direction of the second vibration component;

[0017] And / or, the second vibration component further includes a counterweight block, the driving coil is disposed on the counterweight block, and the counterweight block is connected to the motor housing via an elastic connecting member.

[0018] In one embodiment, the accommodating cavity includes a mounting groove provided on the module housing, the mounting groove having a groove bottom for supporting the diaphragm, and a groove opening opposite to the groove bottom in the groove depth direction of the mounting groove, the motor housing having an opening toward the diaphragm, the opening being provided at the periphery of the groove opening, and the air-permeable isolation channel including an air-permeable isolation gap limited by the opening and the periphery of the groove opening.

[0019] In one embodiment, the width of the air-permeable isolation gap is less than or equal to 0.15 mm.

[0020] In one embodiment, the motor housing is a metal part;

[0021] And / or, the thickness of the motor housing is less than or equal to 0.1 mm.

[0022] The utility model also provides an electronic device, which includes the aforementioned vibration sound module.

[0023] In the technical solution of the utility model, the motor housing is reused as a partition to prevent the sound-absorbing particles from entering the receiving cavity from the sound cavity body to avoid damage to the vibration sound-generating device. In other words, the motor housing is integrated with the partition, which makes the integration of the vibration sound-generating module higher. In addition, the air-permeable isolation channel makes it easy to transmit the sound emitted by the vibration sound-generating device to the receiving cavity and the sound cavity body, so that the space of the receiving cavity can be fully utilized. It should be pointed out that the air-permeable isolation channel refers to a channel that connects the receiving cavity and the sound cavity body and prevents the sound-absorbing particles from entering the receiving cavity. Therefore, through the above design, not only can the overall structure of the vibration sound-generating module be simpler and the assembly more convenient, but also the internal cavity of the vibration unit can be used as the rear sound cavity of the vibration sound-generating module, thereby having the effect of expanding the rear sound cavity of the vibration sound-generating module. In addition, the above design can also increase the filling space of the sound-absorbing particles, thereby effectively improving the low-frequency sound performance of the vibration sound-generating module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 A structural schematic diagram of an embodiment of a vibration sound-generating module provided by the utility model;

[0026] Figure 2 for Figure 1 Exploded view of the vibration sound module;

[0027] Figure 3 for Figure 1 A partial structural diagram of the vibration sound module;

[0028] Figure 4 for Figure 2 The structural diagram of the motor housing;

[0029] Figure 5 for Figure 2 The enlarged view of point A in the middle;

[0030] Figure 6 for Figure 1 A cross-sectional view of the vibration sound module;

[0031] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0032] Figure 8 for Figure 6 Enlarged view of point C in the middle;

[0033] Fig. 9 for Figure 1 Another cross-sectional view of the vibration sound module.

[0034] Description of Figure Numbers:

[0035] 100, vibration sound module; 200, module housing; 210, first cavity; 220, front sound cavity; 230, rear sound cavity; 240, sound cavity body; 241, support platform; 250, receiving cavity; 260, avoidance port; 270, installation slot; 271, slot; 280, filling hole; 290, filling cover; 300, vibration sound device; 400, sound unit; 410, diaphragm; 420, first vibration component; 421, voice coil; 422, first support plate; 423 , first solder pad; 500, vibration unit; 510, motor housing; 511, opening; 512, expansion part; 520, second vibration component; 521, drive coil; 522, counterweight; 523, elastic connector; 530, second support plate; 531, second solder pad; 600, magnetic circuit system; 610, central magnetic part; 611, central magnet; 620, side magnetic part; 630, magnetic gap; 640, FPC; 710, air-permeable isolation hole; 720, air-permeable isolation gap.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] See also Figures 1 to 9 In order to improve the integration of the vibration sound module 100 and the low-frequency sound effect, the utility model proposes a vibration sound module 100.

[0041] In one embodiment of the present invention, the vibration sound-generating module 100 includes a module housing 200 and a vibration sound-generating device 300 . The module housing 200 has a first cavity 210 . The vibration sound-generating device 300 is arranged in the first cavity 210, and the vibration sound-generating device 300 includes a sound-generating unit 400 and a vibration unit 500 connected to the sound-generating unit 400. The sound-generating unit 400 includes a diaphragm 410 arranged in the first cavity 210 and a first vibration component 420 arranged on the diaphragm 410. The diaphragm 410 is used to separate the first cavity 210 into a front sound cavity 220 and a rear sound cavity 230. The vibration unit 500 includes a motor housing 510 arranged in the rear sound cavity 230 and a second vibration component 520 arranged in the motor housing 510. The motor housing 510 separates the rear sound cavity 230 into a sound cavity body 240 for accommodating sound-absorbing particles, and a receiving cavity 250 for accommodating the first vibration component 420 and the second vibration component 520. The cavity wall of the receiving cavity 250 is provided with a breathable isolation channel connected to the sound cavity body 240.

[0042] In this way, the motor housing 510 is reused as a partition to prevent sound-absorbing particles from entering the receiving cavity 250 from the sound cavity body 240 to avoid damage to the vibration sound-generating device 300. In other words, the motor housing 510 is integrated with a partition, which makes the vibration sound-generating module 100 more integrated. In addition, the air-permeable isolation channel makes it easy for the sound emitted by the vibration sound-generating device 300 to be transmitted to the receiving cavity 250 and the sound cavity body 240, so that the space of the receiving cavity 250 can be fully utilized. It should be pointed out that the air-permeable isolation channel refers to a channel that connects the receiving cavity 250 and the sound cavity body 240 and prevents sound-absorbing particles from entering the receiving cavity 250.

[0043] Therefore, through the above design, not only can the overall structure of the vibration sound module 100 be simpler and the assembly more convenient, but also the internal cavity of the vibration unit 500 can be used as the rear sound cavity 240 of the vibration sound module 100, thereby having the effect of expanding the rear sound cavity 240 of the vibration sound module 100. In addition, the above design can also increase the filling space of the sound-absorbing particles, thereby effectively improving the low-frequency sound performance of the vibration sound module 100.

[0044] In order to facilitate filling the sound absorbing particles into the sound cavity body 240, in one embodiment, the module housing 200 is provided with a filling hole 280 connected to the sound cavity body 240, and a filling cover plate 290 is provided at the filling hole 280. In this way, the filling hole 280 can be opened through the filling cover plate 290, and the sound cavity body 240 can be filled with sound absorbing particles through the filling hole 280. After the filling is completed, the filling hole 280 is closed through the filling cover plate 290. Therefore, through the above design, the assembly method of the sound absorbing particles can be made simpler, and the effect of full filling (that is, all the sound absorbing particles are filled in the filling space) can also be achieved.

[0045] There are many structural forms of the vibration sound-generating device 300. In one embodiment, in the thickness direction of the vibration sound-generating device 300, the vibration sound-generating device 300 includes a sound-generating unit 400 and a vibration unit 500 arranged in sequence. In some other embodiments, the arrangement of the sound-generating unit 400 and the vibration unit 500 can also be other, which is not limited here.

[0046] In one embodiment, the air-permeable isolation channel includes an air-permeable isolation hole 710 provided in the motor housing 510. In this way, the motor housing 510 can prevent the sound-absorbing particles from entering the receiving cavity 250, and provide a communication channel between the sound cavity body 240 and the receiving cavity 250 by providing the air-permeable isolation hole 710. In addition, the air-permeable isolation hole 710 is also conducive to reducing the weight of the motor housing 510, which is conducive to lightweighting the vibration sound module 100.

[0047] In one embodiment, the aperture range of the air permeable isolation hole 710 is less than or equal to 0.15 mm. In this way, the sound cavity body 240 can be filled with sound absorbing particles with a radius greater than 0.15 mm, for example, the radius of the sound absorbing particles filled in the sound cavity body 240 is 0.2 mm, which can meet normal use requirements.

[0048] There are many structural forms of the air-permeable isolation hole 710. In one embodiment, the air-permeable isolation hole 710 is arranged in the form of a circular hole, a square hole, or a polygonal hole.

[0049] In one embodiment, the sound cavity body 240 is disposed around the receiving cavity 250. This is conducive to further improving the sound effect of the vibration sound-generating device 300. In some other embodiments, the sound cavity body 240 can also be disposed on one side of the receiving cavity 250 to be disposed opposite to the receiving cavity 250, and the arrangement can be selected according to actual use requirements.

[0050] In one embodiment, the motor housing 510 has an opening 511 facing the diaphragm 410, and the motor housing 510 can cover the second vibration component 520 through the opening 511. The module housing 200 is also provided with a avoidance opening 260 connected to the first cavity 210, and the top wall of the motor housing 510 extends into the avoidance opening 260. The air-permeable isolation channel includes an air-permeable isolation hole 710 provided on the outer peripheral surface of the motor housing 510. In this way, the avoidance opening 260 makes room for the top wall of the motor housing 510, and in the direction of the opening 511 of the motor housing 510, it is conducive to making the vibration sound module 100 thinner, meeting the requirements of lightweight design.

[0051] In one embodiment, a plurality of air-permeable isolation holes 710 are provided, and the plurality of air-permeable isolation holes 710 are spaced apart in the circumferential direction of the motor housing 510. In this way, in the circumferential direction of the motor housing 510, a plurality of air-permeable isolation holes 710 are connected to the sound cavity body 240 and the receiving cavity 250, which is conducive to further improving the sound effect of the vibration sound-generating device 300. Further, in one embodiment, in the length direction of the motor housing 510, air-permeable isolation holes 710 are respectively provided on both sides of the motor housing 510, and in the width direction of the motor housing 510, air-permeable isolation holes 710 are respectively provided on both sides of the motor housing 510. In this way, it is conducive to further improving the sound effect of the vibration sound-generating device 300.

[0052] In one embodiment, the vibration sound-generating device 300 further includes a magnetic circuit system 600, the first vibration component 420 includes a voice coil 421 connected to the diaphragm 410, the second vibration component 520 includes a driving coil 521 elastically connected to the motor housing 510, the magnetic circuit system 600 is provided with a magnetic gap 630 corresponding to the voice coil 421, and the side of the magnetic circuit system 600 away from the voice coil 421 is arranged opposite to the driving coil 521 to drive the driving coil 521 to reciprocate. In this way, the voice coil 421 and the driving coil 521 share the magnetic circuit system 600, and under the drive of the magnetic circuit system 600, the voice coil 421 drives the diaphragm 410 to vibrate to realize the vibration sound-generating function of the vibration sound-generating device 300, and the reciprocating vibration of the driving coil 521 realizes the vibration feedback function of the vibration sound-generating device 300. In some other embodiments, the structural form of the vibration sound-generating device 300 can also be other (for example, the sound-generating unit 400 and the vibration unit 500 can be respectively provided with separate magnetic circuit structures), and there is no limitation here, as long as the vibration sound-generating device 300 can have the vibration sound-generating function and the vibration feedback function.

[0053] In one embodiment, the magnetic circuit system 600 includes a central magnetic part 610 and a side magnetic part 620 disposed on the periphery of the central magnetic part 610, the side magnetic part 620 and the central magnetic part 610 are spaced apart to form a magnetic gap 630, the central magnetic part 610 includes a plurality of central magnets 611 spaced apart along the vibration direction of the second vibration component 520, and the driving coil 521 includes two oppositely disposed connecting edges, and along the vibration direction of the first vibration component 420, the two connecting edges are disposed opposite to two adjacent central magnets 611. In this way, the magnetic circuit system 600 can not only form a magnetic gap 630 to provide a driving force acting on the voice coil 421, but also the magnetic circuit system 600 can be disposed correspondingly to the driving coil 521 to provide a driving force to drive the driving coil 521 to vibrate, thereby realizing the sharing of the magnetic circuit system 600 and improving the structural integration of the vibration sound-generating device 300.

[0054] In one embodiment, there are multiple driving coils 521, and the multiple driving coils 521 are spaced apart and distributed along the vibration direction of the second vibration component 520. This is beneficial to improving the vibration experience fed back to the user.

[0055] In one embodiment, the second vibration component 520 further includes a counterweight 522, the driving coil 521 is disposed on the counterweight 522, and the counterweight 522 is connected to the motor housing 510 via an elastic connector 523. This is beneficial to improving the vibration experience fed back to the user. In some other embodiments, the counterweight 522 is elastic so that the counterweight 522 is elastically connected to the motor housing 510, so that the elastic connector 523 can be eliminated.

[0056] In one embodiment, the receiving cavity 250 includes a mounting groove 270 provided in the module housing 200, the mounting groove 270 having a groove bottom for supporting the diaphragm 410, and a groove 271 opposite to the groove bottom in the groove depth direction of the mounting groove 270, the motor housing 510 having an opening 511 facing the diaphragm 410, the opening 511 being provided at the periphery of the groove 271, and the air-permeable isolation channel including an air-permeable isolation gap 720 limited by the opening 511 and the periphery of the groove 271. In this way, it is beneficial to increase the communication area between the sound cavity body 240 and the receiving cavity 250, so as to increase the fluidity of the airflow flowing in the sound cavity body 240 and the receiving cavity 250, thereby improving the sound generation effect of the vibration generating device. Furthermore, in one embodiment, a connecting glue is provided between the top periphery of the motor housing 510 and the avoidance opening 260 to achieve the fixation of the motor housing 510.

[0057] In one embodiment, the width of the air permeable isolation gap 720 is less than or equal to 0.15 mm. In this way, the acoustic cavity body 240 can be filled with sound absorbing particles with a radius greater than 0.15 mm, for example, the radius of the sound absorbing particles filled in the acoustic cavity body 240 is 0.2 mm.

[0058] In one embodiment, the first vibration component 420 includes a voice coil 421 connected to the diaphragm 410, and a first support 422 connected to the voice coil 421 at one end and provided with a first solder pad 423 at the other end. The second vibration component 520 includes a counterweight 522 elastically connected to the motor housing 510, a drive coil 521 connected to the counterweight 522, and a second support 530 connected to the drive coil 521 at one end and provided with a second solder pad 531 at the other end. The motor housing 510 is provided with a super The expansion portion 512 at the periphery of the notch 271, the first support piece 422 and the second support piece 530 extend out of the expansion portion 512 along the side of the motor housing 510, so that the first pad 423 and the second pad 531 are arranged outside the expansion portion 512, and the height difference between the first support piece 422 and the second support piece 530 gradually decreases in the direction in which the first support piece 422 extends out of the expansion portion 512, so that the heights of the first pad 423 and the second pad 531 in the groove depth direction of the installation groove 270 are consistent. In this way, the expansion portion 512 provides sufficient space to reduce the height difference between the first pad 423 and the second pad 531, so as to reduce the possibility of sound absorbing particles entering the receiving cavity 250 through the gap between the first pad 423 and the second pad 531.

[0059] In one embodiment, the cavity wall of the sound cavity body 240 is provided with a support platform 241 for supporting the first solder pad 423 and the second solder pad 531. In the direction in which the first support piece 422 extends out of the expansion portion 512, the support platform 241 and the groove wall of the mounting groove 270 are opposite and separate a second cavity that is connected to the receiving cavity 250 through the expansion portion 512. The second cavity is provided with a blocking structure to prevent sound-absorbing particles from entering the expansion portion 512 from the second cavity. In this way, the second cavity is conducive to further increasing the space of the sound cavity body 240.

[0060] It can be understood that the first pad 423 and the second pad 531 are used for connection to a circuit board, such as an FPC.

[0061] In one embodiment, the motor housing 510 is a metal part. In this way, the motor housing 510 has a high structural strength. It is worth mentioning that in one embodiment, the motor housing 510 has a high structural strength so that the motor housing 510 is not easily deformed, which is conducive to maintaining the shape of the air-permeable isolation hole 710 and the air-permeable isolation gap 720, so as to prevent the sound-absorbing particles from entering the receiving cavity 250 through the deformed air-permeable isolation hole 710 and the air-permeable isolation gap 720.

[0062] In one embodiment, the thickness of the motor housing 510 is less than or equal to 0.1 mm. In this way, under the premise of meeting the structural strength requirements, on the one hand, it is helpful to reduce the weight of the vibration sound module 100, and on the other hand, it is helpful to increase the total volume of the sound cavity body 240 and the receiving cavity 250, which is helpful to improve the sound effect of the vibration sound module 100.

[0063] The utility model also proposes an electronic device, which includes the aforementioned vibration sound module 100. The specific structure of the vibration sound module 100 refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0064] It is worth mentioning that the electronic device can be configured as, but not limited to, a mobile phone, and can also be a laptop computer, a PAD, etc.

[0065] 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 vibration sound module, characterized in that: include A module housing having a first cavity; and A vibration sound-generating device is arranged in the first cavity, the vibration sound-generating device includes a sound-generating unit and a vibration unit connected to the sound-generating unit, the sound-generating unit includes a diaphragm arranged in the first cavity, and a first vibration component arranged on the diaphragm, the diaphragm is used to separate the first cavity into a front sound cavity and a rear sound cavity, the vibration unit includes a motor housing arranged in the rear sound cavity, and a second vibration component arranged in the motor housing, the motor housing separates the rear sound cavity into a sound cavity body for accommodating sound-absorbing particles, and a accommodating cavity for accommodating the first vibration component and the second vibration component, and the cavity wall of the accommodating cavity is provided with an air-permeable isolation channel connected to the sound cavity body.

2. The vibration sound module according to claim 1, characterized in that: The air-permeable isolation channel includes an air-permeable isolation hole arranged in the motor housing.

3. The vibration sound-generating module according to claim 2, characterized in that: The aperture range of the air permeable isolation hole is less than or equal to 0.15 mm; And / or, the air-permeable isolation holes are arranged in the form of circular holes or polygonal holes.

4. The vibration sound-generating module according to claim 1, characterized in that: The sound cavity body is arranged around the receiving cavity.

5. The vibration sound-generating module according to claim 4, characterized in that: The motor housing has an opening facing the diaphragm, and the motor housing can cover the second vibration component through the opening. The module housing is also provided with a avoidance port connected to the first cavity, and the top wall of the motor housing extends into the avoidance port. The air-permeable isolation channel includes an air-permeable isolation hole provided on the outer peripheral surface of the motor housing.

6. The vibration sound-generating module according to claim 5, characterized in that: A plurality of the air-permeable isolation holes are provided, and the plurality of the air-permeable isolation holes are spaced apart in the circumferential direction of the motor housing.

7. The vibration sound-generating module according to any one of claims 1 to 6, characterized in that: The vibration sound-generating device also includes a magnetic circuit system, the first vibration component includes a voice coil connected to the diaphragm, the second vibration component includes a driving coil elastically connected to the motor housing, the magnetic circuit system is provided with a magnetic gap corresponding to the voice coil, and the side of the magnetic circuit system away from the voice coil is arranged opposite to the driving coil to drive the driving coil to vibrate reciprocatingly.

8. The vibration sound-generating module according to claim 7, characterized in that: The magnetic circuit system includes a central magnetic part and a side magnetic part arranged on the periphery of the central magnetic part, the side magnetic part and the central magnetic part are spaced apart to form the magnetic gap, the central magnetic part includes a plurality of central magnets spaced apart along the vibration direction of the second vibration component, the driving coil includes two oppositely arranged connecting edges, and along the vibration direction of the first vibration component, the two connecting edges are oppositely arranged to the two adjacent central magnets.

9. The vibration sound-generating module according to claim 7, characterized in that: There are a plurality of driving coils, and the plurality of driving coils are distributed at intervals along the vibration direction of the second vibration component; And / or, the second vibration component further includes a counterweight block, the driving coil is disposed on the counterweight block, and the counterweight block is connected to the motor housing via an elastic connecting member.

10. The vibration sound-generating module according to any one of claims 1 to 6, characterized in that: The accommodating cavity includes a mounting groove arranged on the module housing, the mounting groove having a groove bottom for supporting the diaphragm, and a groove opening opposite to the groove bottom in the groove depth direction of the mounting groove, the motor housing having an opening toward the diaphragm, the opening being arranged on the periphery of the groove opening, and the air-permeable isolation channel including an air-permeable isolation gap limited by the opening and the periphery of the groove opening.

11. The vibration sound-generating module according to claim 10, characterized in that: The width of the air-permeable isolation gap is less than or equal to 0.15 mm.

12. The vibration sound-generating module according to claim 1, characterized in that: The motor housing is a metal part; And / or, the thickness of the motor housing is less than or equal to 0.1 mm.

13. An electronic device, characterized in that: It comprises a vibration sound-generating module as described in any one of claims 1 to 12.

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