Sound generating device and electronic device

Abstract

The present invention discloses a sound generating device and an electronic device. The sound generating device includes a sound generating element and a breathable separator. The ratio of the length of the major axis side to the length of the minor axis side of the diaphragm of the sound generating element is greater than 1. The breathable separator includes a bottom part and a side part connected to the sound generating element. The side part includes a long side wall and a short side wall. At least two of the bottom part, the long side wall, and the short side wall are provided with breathable holes corresponding to the air leakage holes of the sound generating element; the opening area of the breathable holes in the short side wall is smaller than the opening area of the breathable holes in the bottom part and / or the opening area of the breathable holes in the long side wall; and / or, the opening area of the breathable holes in the bottom part adjacent to the short side wall is smaller than the opening area of the breathable holes in the bottom part far from the short side wall; and / or, the opening area of the breathable holes in the long side wall adjacent to the short side wall is smaller than the opening area of the breathable holes in the long side wall far from the short side wall. The sound generating device of the present invention effectively solves the flutter problem that occurs during the operation of the sound generating element, and has good acoustic performance and sound generating reliability.

Description

Technical Field

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

[0002] A loudspeaker, also known as a speaker, is an electroacoustic transducer that converts electrical energy into sound energy through a certain physical effect. When different electronic energies are transmitted to the voice coil of the loudspeaker, the voice coil generates an energy that interacts with the magnetic field of the magnet. This interaction causes the diaphragm to vibrate. Since the electronic energy changes at any time, the voice coil of the loudspeaker will move forward or backward. Therefore, the diaphragm of the loudspeaker will move accordingly. This action causes changes in the density of the air and generates sound.

[0003] When the suspension lead wire, centering washer of the loudspeaker are asymmetric, the diaphragm material is uneven, or other structural limitations cause the system to be asymmetric, it will lead to asymmetry in the dynamic factors Bl, mass, and compliance of the vibration system. Furthermore, it will cause the swing vibration of the loudspeaker vibration system to intensify, resulting in product noise and poor reliability. With the use of Smart-PA in mobile phones and other electronic devices, the amplitude of the loudspeaker is getting larger and larger. This requires that the loudspeaker product has less swing vibration at large amplitudes to meet the acoustic performance and more stringent reliability of the loudspeaker. However, when the amplitude of the loudspeaker is relatively large, the vibration at the four corners of the dome will generate polarization, especially the long-axis swing vibration of products with a relatively large aspect ratio is more intense. Currently, the design of the loudspeaker is that the sound outlet holes are symmetrically arranged, and the mesh cloth on the sound holes is also the same symmetric design. This design is extremely likely to cause the phenomenon of rolling vibration in the loudspeaker product. Summary of the Invention

[0004] The main object of the present invention is to provide a sound generating device and an electronic device, aiming to provide a sound generating device that can effectively reduce the swing vibration in the length direction. This sound generating device not only improves the performance and reliability of the loudspeaker, but also effectively reduces the swing vibration caused by large torque in the length direction.

[0005] To achieve the above object, the present invention proposes a sound generating device, which includes:

[0006] A sound generating element, the sound generating element is provided with a diaphragm, the diaphragm has a long-axis side and a short-axis side connected end to end, the ratio of the length of the long-axis side to the length of the short-axis side is greater than 1, and the sound generating element is also provided with a vent hole; and

[0007] A breathable separator, the breathable separator includes a bottom and a side portion provided at the periphery of the bottom, the bottom is connected to a side of the sound generating element facing away from the diaphragm, the side portion is connected to the periphery of the sound generating element, the side portion includes a long side wall corresponding to the long axis side and a short side wall corresponding to the short axis side, and at least two of the bottom, the long side wall and the short side wall are provided with breathable holes corresponding to the air release holes;

[0008] Wherein, the opening area of the breathable holes in the short side wall is smaller than the opening area of the breathable holes in the bottom and / or the opening area of the breathable holes in the long side wall; and / or, the opening area of the breathable holes on the side of the bottom adjacent to the short side wall is smaller than the opening area of the breathable holes on the side of the bottom away from the short side wall; and / or, the opening area of the breathable holes on the side of the long side wall adjacent to the short side wall is smaller than the opening area of the breathable holes on the side of the long side wall away from the short side wall.

[0009] In one embodiment, the bottom, the long side wall and the short side wall are all provided with the breathable holes;

[0010] The opening area of the breathable holes in the short side wall is respectively smaller than the opening area of the breathable holes in the bottom and the opening area of the breathable holes in the long side wall.

[0011] In one embodiment, the opening rate of the short side wall is 10% - 20%;

[0012] And / or, the distance between two adjacent breathable holes in the short side wall is 0.25 mm - 0.3 mm;

[0013] And / or, the pore diameter of the breathable holes in the short side wall is 0.05 mm - 0.1 mm;

[0014] And / or, the thickness of the short side wall is 0.1 mm - 0.15 mm.

[0015] In one embodiment, the opening rate of the bottom and the long side wall is 40% - 50%;

[0016] And / or, the distance between two adjacent breathable holes in the bottom and the long side wall is 0.1 mm - 0.15 mm;

[0017] And / or, the pore diameter of the breathable holes in the bottom and the long side wall is 0.15 mm - 0.2 mm;

[0018] And / or, the thickness of the bottom and the long side wall is 0.05 mm - 0.1 mm.

[0019] In one embodiment, the bottom and the long side wall are provided with the breathable holes;

[0020] The opening area of the ventilation holes on the bottom side adjacent to the short side wall is smaller than the opening area of the ventilation holes on the bottom side away from the short side wall; the opening area of the ventilation holes on the long side wall adjacent to the short side wall is smaller than the opening area of the ventilation holes on the long side wall away from the short side wall.

[0021] In one embodiment, the opening ratio of the bottom side adjacent to the short side wall is 10% - 30%, and the opening ratio of the bottom side away from the short side wall is less than or equal to 80%;

[0022] And / or, the distance between two adjacent ventilation holes on the bottom side adjacent to the short side wall is 0.2 mm - 0.3 mm;

[0023] And / or, the aperture of the ventilation holes on the bottom side adjacent to the short side wall is 0.05 mm - 0.15 mm;

[0024] And / or, the thickness of the bottom side adjacent to the short side wall is 0.1 mm - 0.25 mm;

[0025] And / or, the opening density of the bottom increases gradually from the side adjacent to the short side wall to the side away from the short side wall.

[0026] In one embodiment, the opening ratio of the long side wall adjacent to the short side wall is 10% - 30%, and the opening ratio of the long side wall away from the short side wall is less than or equal to 80%;

[0027] And / or, the distance between two adjacent ventilation holes on the long side wall adjacent to the short side wall is 0.2 mm - 0.3 mm;

[0028] And / or, the aperture of the ventilation holes on the long side wall adjacent to the short side wall is 0.05 mm - 0.15 mm;

[0029] And / or, the thickness of the long side wall adjacent to the short side wall is 0.1 mm - 0.25 mm;

[0030] And / or, the opening density of the long side wall increases gradually from the side adjacent to the short side wall to the side away from the short side wall.

[0031] In one embodiment, the bottom and the short side wall are provided with the ventilation holes;

[0032] The opening area of the ventilation holes on the short side wall is smaller than the opening area of the ventilation holes on the bottom; the opening area of the ventilation holes on the bottom side adjacent to the short side wall is smaller than the opening area of the ventilation holes on the bottom side away from the short side wall.

[0033] In one embodiment, the porosity of the short sidewall is 10% to 15%;

[0034] And / or, the distance between two adjacent air vents on the short sidewall is 0.3 mm to 0.4 mm;

[0035] And / or, the aperture diameter of the air vents on the short sidewall is 0.05 mm to 0.1 mm;

[0036] And / or, the thickness of the short sidewall is 0.15 mm to 0.25 mm.

[0037] In one embodiment, the porosity of the side of the bottom adjacent to the short sidewall is 10% to 15%, and the porosity of the side of the bottom away from the short sidewall is less than or equal to 80%;

[0038] And / or, the distance between two adjacent air vents on the side of the bottom adjacent to the short sidewall is 0.3 mm to 0.4 mm;

[0039] And / or, the aperture diameter of the air vents on the side of the bottom adjacent to the short sidewall is 0.05 mm to 0.1 mm;

[0040] And / or, the thickness of the side of the bottom adjacent to the short sidewall is 0.15 mm to 0.25 mm;

[0041] And / or, the opening density of the bottom gradually increases from the side adjacent to the short sidewall to the side away from the short sidewall

[0042] And / or, the porosity of the short sidewall is less than the porosity of the side of the bottom adjacent to the short sidewall.

[0043] In one embodiment, both the long sidewall and the short sidewall are provided with the air vents;

[0044] The opening area of the air vents on the short sidewall is smaller than the opening area of the air vents on the long sidewall; the opening area of the air vents on the side of the long sidewall adjacent to the short sidewall is smaller than the opening area of the air vents on the side of the long sidewall away from the short sidewall.

[0045] In one embodiment, the porosity of the short sidewall is 5% to 15%;

[0046] And / or, the distance between two adjacent air vents on the short sidewall is 0.3 mm to 0.5 mm;

[0047] And / or, the aperture diameter of the air vents on the short sidewall is 0.03 mm to 0.1 mm;

[0048] And / or, the thickness of the short side wall is 0.15 mm to 0.25 mm.

[0049] In one embodiment, the opening rate of the long side wall adjacent to the short side wall is 5% to 15%, and the opening rate of the long side wall away from the short side wall is less than or equal to 80%;

[0050] And / or, the distance between two adjacent vent holes on the long side wall adjacent to the short side wall is 0.3 mm to 0.5 mm;

[0051] And / or, the aperture of the vent hole on the long side wall adjacent to the short side wall is 0.03 mm to 0.1 mm;

[0052] And / or, the thickness of the long side wall adjacent to the short side wall is 0.15 mm to 0.25 mm;

[0053] And / or, the opening density of the long side wall gradually increases from the side adjacent to the short side wall to the side away from the short side wall

[0054] And / or, the opening rate of the short side wall is less than the opening rate of the long side wall adjacent to the short side wall.

[0055] In one embodiment, the ratio of the length of the long axis side to the length of the short axis side is greater than 1.2;

[0056] And / or, the breathable separator is a steel mesh, a mesh cloth, a steel mesh plate, an aluminum mesh plate or a copper mesh plate;

[0057] And / or, the breathable separator forms the vent holes by etching, knitting or injection molding;

[0058] And / or, the breathable separator is an integrally formed structure; or, the breathable separator includes a plurality of them, and the plurality of breathable separators are arranged at intervals.

[0059] In one embodiment, the sounding monomer includes:

[0060] A housing;

[0061] A magnetic circuit system, a positioning protrusion facing the other is provided on the periphery of the housing and / or the magnetic circuit system, the positioning protrusion is connected to the periphery of the other, and the vent hole is formed between the magnetic circuit system and / or the housing and the magnetic circuit system; and

[0062] A vibration system, the vibration system includes the diaphragm, the diaphragm is connected to the housing and is opposite to the magnetic circuit system, the diaphragm, the housing and the magnetic circuit system enclose a sound cavity, and the vent hole communicates with the sound cavity.

[0063] The present invention further provides an electronic device, including a device housing and the above-described sound generating device, and the sound generating device is disposed in the device housing.

[0064] In the sound generating unit of the sound generating device according to the technical solution of the present invention, the diaphragm of the sound generating element has a long axis side and a short axis side that are connected end to end, and the length ratio of the long axis side to the short axis side is greater than 1. By providing air leakage holes on the sound generating element, the air pressure in the internal sound cavity of the sound generating element is balanced to ensure the sound generating effect and performance of the sound generating device; by disposing a breathable isolation member on the sound generating element, that is, the bottom of the breathable isolation member is connected to the side of the sound generating element facing away from the diaphragm, and the side of the breathable isolation member is connected to the periphery of the sound generating element, so as to cover the air leakage holes by the bottom and / or side of the breathable isolation member, so as to achieve full filling when the sound generating device is applied to electronic products or modules, so as to further improve the sound generating effect and acoustic performance; in order to ensure the air permeability of the breathable isolation member, at least two of the bottom of the breathable isolation member, the long side wall of the side and the short side wall of the side are provided with air holes corresponding to the air leakage holes, that is, the air holes are arranged corresponding to the air leakage holes, so that the air flow inside the sound generating element passes through the air leakage holes and the air holes to communicate with the outside, so as to ensure air pressure balance; further, by setting the opening area of the air holes on the short side wall to be smaller than the opening area of the air holes on the bottom and / or the opening area of the air holes on the long side wall; and / or, the opening area of the air holes on the bottom near the short side wall is smaller than the opening area of the air holes on the bottom far from the short side wall; and / or, the opening area of the air holes on the long side wall near the short side wall is smaller than the opening area of the air holes on the long side wall far from the short side wall. In this way, the uneven distribution of the air holes on the bottom, the long side wall of the side and the short side wall of the side of the breathable isolation member can be used to adjust the air flow velocity of the sound wave, so that when the air flow flows out from the long axis side and the short axis side, the flow velocity reaches consistency, realizing the function of adjustable air flow velocity, realizing different damping to improve the vibration state, so as to effectively reduce the rocking vibration generated by the large torque in the long axis side direction and improve the acoustic performance and reliability of the sound generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0066] Figure 1 It is an exploded schematic view of the sound generating device in an embodiment of the present invention;

[0067] Figure 2 It is a schematic structural view of the separation of the sound generating element and the breathable isolation member in an embodiment of the present invention;

[0068] Figure 3 Schematic diagram of the separation of the sounding monomer and the breathable separator in another embodiment of the present invention;

[0069] Figure 4 Schematic diagram of the breathable separator in one embodiment of the present invention;

[0070] Figure 5 Schematic diagram of the breathable separator in another embodiment of the present invention;

[0071] Figure 6 Schematic diagram of the breathable separator in yet another embodiment of the present invention;

[0072] Figure 7 Schematic diagram of the breathable separator in still another embodiment of the present invention.

[0073] Explanation of the reference numerals in the drawings:

[0074] Label Name Label Name 100 Sound generating device 1312 Short axis side 1 Sound generating element 132 Voice coil 11 Housing 133 Centering washer 111 Positioning protrusion 14 Air vent hole 12 Magnetic circuit system 2 Ventilation separator 121 Magnetic yoke 21 Bottom 122 Central magnetic circuit part 22 Side part 123 Side magnetic circuit part 221 Long side wall 13 Vibration system 222 Short side wall 131 Diaphragm 23 Ventilation hole 1311 Long axis side

[0075] The realization, functional characteristics and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0076] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0077] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0078] At the same time, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously.

[0079] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0080] The present invention provides a sound generating device 100. It can be understood that the sound generating device 100 can be applied in an electronic device, and the electronic device can be an earphone, a computer, a mobile phone, a speaker, etc. In this embodiment, taking the sound generating device 100 applied in a mobile phone as a speaker module and the sound generating element 1 as a speaker element as an example for illustration.

[0081] Please refer to Figures 1 to 7 As shown, in the embodiment of the present invention, the sound generating device 100 includes a sound generating element 1 and a breathable isolation member 2. Among them, the sound generating element 1 is provided with a diaphragm 131, and the diaphragm 131 has a long axis side 1311 and a short axis side 1312 that are connected end to end. The length ratio of the long axis side 1311 to the short axis side 1312 is greater than 1. The sound generating element 1 is also provided with a vent hole 14. The breathable isolation member 2 includes a bottom portion 21 and a side portion 22 provided on the periphery of the bottom portion 21. The bottom portion 21 is connected to the side of the sound generating element 1 facing away from the diaphragm 131, and the side portion 22 is connected to the periphery of the sound generating element 1. The side portion 22 includes a long side wall 221 corresponding to the long axis side 1311 and a short side wall 222 corresponding to the short axis side 1312. At least two of the bottom portion 21, the long side wall 221, and the short side wall 222 are provided with vent holes 23 corresponding to the vent hole 14.

[0082] In this embodiment, the opening area of the vent hole 23 in the short side wall 222 is smaller than the opening area of the vent hole 23 in the bottom portion 21 and / or the opening area of the vent hole 23 in the long side wall 221; and / or, the opening area of the vent hole 23 on the side of the bottom portion 21 adjacent to the short side wall 222 is smaller than the opening area of the vent hole 23 on the side of the bottom portion 21 away from the short side wall 222; and / or, the opening area of the vent hole 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the opening area of the vent hole 23 on the side of the long side wall 221 away from the short side wall 222.

[0083] It can be understood that the sound generating element 1 is a speaker element. As Figures 1 to 3As shown, the sound generating unit 1 includes a vibration system 13 and a magnetic circuit system 12. The vibration system 13 includes a diaphragm 131 and a voice coil 132. The magnetic circuit system 12 has a magnetic gap. One end of the voice coil 132 is connected to the diaphragm 131, and the other end of the voice coil 132 is inserted into the magnetic gap; or, the other end of the voice coil 132 is located above the magnetic gap and is disposed opposite to the magnetic gap.

[0084] When the voice coil 132 is electrically connected to an external circuit, electrical energy is transmitted to the magnetic gap of the magnetic circuit system 12 through the voice coil 132. Under the action of the magnetic lines of force generated in the magnetic gap, the voice coil 132 and the diaphragm 131 move up and down. That is, the magnetic field generated by the magnetic circuit system 12 converts electrical energy into mechanical energy, so that the voice coil 132 vibrates, and drives the diaphragm 131 of the vibration system 13 to vibrate and generate sound, further converting mechanical energy into sound energy. That is, after the voice coil 132 disposed in the magnetic gap receives an external alternating current signal that changes, it makes a reciprocating movement of cutting the magnetic lines of force under the drive of the magnetic field force of the magnetic circuit system 12, driving the diaphragm 131 of the vibration system 13 to vibrate and generate sound.

[0085] In this embodiment, the vibration system 13 and the magnetic circuit system 12 of the sound generating unit 1 enclose a sound cavity. By providing a vent hole 14 in the sound generating unit 1, the sound generating unit 1 communicates the sound cavity with the external environment through the vent hole 14. In this way, when the voice coil 132 of the vibration system 13 drives the diaphragm 131 to vibrate, the pressure in the sound cavity can be balanced through the vent hole 14. It can be understood that when the sound generating unit 1 is applied to an electronic device or a module, in order to further improve the performance of the electronic device or the module, sound-absorbing particles are usually filled.

[0086] To prevent the sound-absorbing particles from entering the sound generating unit 1 through the vent hole 14 and affecting the performance of the sound generating unit 1, as Figures 1 to 3 shown, in this embodiment, the sound generating device 100 is further provided with a breathable separator 2, and the breathable separator 2 covers the vent hole 14. It can be understood that in order to balance the pressure in the sound cavity, the breathable separator 2 has breathable holes 23.

[0087] Optionally, the breathable separator 2 is a steel mesh, a mesh cloth, a steel mesh plate, an aluminum mesh plate or a copper mesh plate. It can be understood that the breathable separator 2 can also be a metal woven mesh. Compared with the metal steel mesh formed by etching or stamping, its hardness is relatively low and its plasticity is strong. It can not only ensure the breathable area of the breathable separator 2, but also the shape of the breathable separator 2 can be processed according to requirements, and the application method is more flexible.

[0088] In this embodiment, the breathable separator 2 has a breathable function. The breathable separator 2 is made of a metal material. Optionally, the breathable holes 23 of the breathable separator 2 are formed by etching, knitting or injection molding. Of course, the breathable separator 2 is formed by weaving metal wires, so that the breathable separator 2 has a plurality of breathable holes 23.

[0089] It can be understood that the breathable separator 2 is formed by weaving metal wires, so that the thickness of the breathable separator 2 is uniform, occupying less space compared with traditional inserted separator meshes or injection-molded meshes and the like. Moreover, the entire breathable separator 2 can be stamped into shape and is not affected by the minimum width of die cutting, enabling the entire surface of the breathable separator 2 to be formed, with convenient processing and easy shaping. At the same time, the breathable separator 2 can be deformed according to the required structure, while traditional separator meshes (such as PET material meshes) cannot be deformed, making the breathable separator 2 less restricted by space, with diverse variations and adaptable to more spaces. And the breathable separator 2 is formed by weaving metal wires, making the entire structure of the breathable separator 2 have better air permeability compared with traditional separator meshes (such as PET material meshes), with air holes 23 existing throughout, higher improvement in acoustic performance, better flexibility, capable of being bent arbitrarily, changing directions, and having higher combinability.

[0090] In this embodiment, as Figures 1 to 7 shown, the breathable separator 2 includes a bottom 21 and a side portion 22 disposed around the periphery of the bottom 21. The side portion 22 extends in a peripheral direction away from the sounding unit 1. The bottom 21 is disposed in contact with the side of the sounding unit 1 facing away from the diaphragm 131, and the side portion 22 is disposed in contact with the periphery of the sounding unit 1.

[0091] It can be understood that the vibration system 13 and the magnetic circuit system 12 of the sounding unit 1 are disposed opposite to each other. The sounding unit 1 further includes a housing 11 for accommodating or fixing the vibration system 13 and the magnetic circuit system 12. At this time, the magnetic circuit system 12 is connected to one end of the housing 11, and the diaphragm 131 of the vibration system 13 is connected to the other end of the housing 11 and is opposite to the magnetic circuit system 12, so that the diaphragm 131 of the vibration system 13, the housing 11, and the magnetic circuit system 12 enclose to form a sound cavity, and the air vent hole 14 communicates with the sound cavity.

[0092] In this embodiment, the magnetic circuit system 12 is provided with the air vent hole 14 and / or the periphery where the housing 11 is connected to the magnetic circuit system 12 forms the air vent hole 14, that is, the air vent hole 14 is formed on the side of the sounding unit 1 facing away from the diaphragm 131 and / or the periphery of the sounding unit 1.

[0093] It can be understood that, as Figures 1 to 3 shown, the periphery of the housing 11 and / or the magnetic circuit system 12 has a positioning protrusion 111 facing the other, and the positioning protrusion 111 is connected to the periphery of the other, and the air vent hole 14 is formed between the magnetic circuit system 12 and / or the housing 11 and the magnetic circuit system 12. That is, the positioning protrusion 111 can be provided on one of the housing 11 and the magnetic circuit system 12, and the housing 11 and the magnetic circuit system 12 jointly define the air vent hole 14.

[0094] It can be understood that, as Figures 1 to 3As shown, the magnetic circuit system 12 includes a central magnetic circuit portion 122, a side magnetic circuit portion 123, and a magnetic yoke 121. The central magnetic circuit portion 122 and the side magnetic circuit portion 123 are both disposed within the magnetic yoke 121 and are spaced apart to define a magnetic gap. The side magnetic circuit portion 123 is disposed on the outer periphery of the central magnetic circuit portion 122 and is connected to the housing 11. The vent hole 14 is formed by the magnetic yoke 121 and / or the side magnetic circuit portion 123 or the enclosure formed by the side magnetic circuit portion 123 and the housing 11.

[0095] In this embodiment, both the central magnetic circuit portion 122 and the side magnetic circuit portion 123 of the magnetic circuit system 12 are disposed on the side of the magnetic yoke 121 facing the diaphragm 131, and the central magnetic circuit portion 122 and the side magnetic circuit portion 123 are spaced apart to define a magnetic gap. It can be understood that the side magnetic circuit portion 123 may be an annular structure surrounding the central magnetic circuit portion 122; or, the side magnetic circuit portion 123 includes a plurality of side magnetic circuit parts, and the plurality of side magnetic circuit parts are spaced apart and surround the central magnetic circuit portion 122, so that each side magnetic circuit part is spaced apart from the central magnetic circuit portion 122 to define a magnetic gap, which is not limited herein.

[0096] It can be understood that the central magnetic circuit portion 122 includes a central magnet and a central washer. The central magnet and the central washer may be selected as plate-like structures, and the shapes and structures of the central magnet and the central washer are the same, which is not limited herein. The side magnetic circuit portion 123 includes a side magnet and a side washer. The side magnet and the side washer may be selected as an annular structure or a plurality of plate-like structures, and the shapes and structures of the side magnet and the side washer may be the same or different, which is not limited herein.

[0097] It should be noted that the vent holes 14 include a plurality of them, and the plurality of vent holes 14 are spaced apart and formed by the cooperation of the magnetic yoke 121 and / or the side magnetic circuit portion 123 and the housing 11. It can be understood that the air-permeable separator 2 may be an integral structure and covers the vent holes 14 of the sound generating unit 1. Of course, the air-permeable separator 2 includes a plurality of parts, and each part covers at least one vent hole 14 of the sound generating unit 1, which is not limited herein.

[0098] In this embodiment, as Figure 2 shown, the air-permeable separator 2 may be an integrally formed structure, that is, the air-permeable separator 2 is an integral structure. It can be understood that in order to save materials and reduce weight, the bottom 21 of the air-permeable separator 2 is provided with a hollow structure or a through-hole structure, which is not limited herein. Of course, the air-permeable separator 2 may also be a split structure. For example, the air-permeable separator 2 includes a plurality of them, and the plurality of air-permeable separators 2 are spaced apart. At this time, each air-permeable separator 2 includes a bottom 21 and / or at least one long side wall 221 and / or at least one short side wall 222. For example, as Figure 3 shown, the air-permeable separator 2 includes two, and the two air-permeable separators 2 are disposed opposite to each other.

[0099] AsFigure 1 , Figures 3 to 7 As shown in Figures 3 to 7 , the breathable separator 2 optionally includes two, and the two breathable separators 2 are symmetrically arranged. It can be understood that the two breathable separators 2 are arranged at intervals along the direction of the long axis side 1311 and are symmetrically arranged, that is, the two breathable separators 2 are symmetrically arranged along the center line perpendicular to the long axis side 1311. Each breathable separator 2 includes two symmetrically arranged long side walls 221 and a short side wall 222. The two short side walls 222 of the two breathable separators 2 are symmetrically arranged, and the two long side walls 221 on the same side of the two breathable separators 2 are symmetrically arranged along the center line perpendicular to the long axis side 1311.

[0100] It can be understood that the sounding element 1 is optionally rectangular, that is, the diaphragm 131 of the sounding element 1 has two long axis sides 1311 and two short axis sides 1312 connected end to end, that is, the length ratio of the long axis side 1311 to the short axis side 1312 is greater than 1. Optionally, the length ratio of the long axis side 1311 to the short axis side 1312 is greater than 1.2. In this embodiment, the long side wall 221 of the breathable separator 2 corresponds to the long axis side 1311, and the short side wall 222 of the breathable separator 2 corresponds to the short axis side 1312. Optionally, at least two of the bottom 21, the long side wall 221, and the short side wall 222 of the breathable separator 2 are provided with breathable holes 23 corresponding to the air leakage holes 14.

[0101] In this embodiment, the opening area of the breathable hole 23 in the short side wall 222 is smaller than the opening area of the breathable hole 23 in the bottom 21 and / or the opening area of the breathable hole 23 in the long side wall 221; and / or, the opening area of the breathable hole 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than the opening area of the breathable hole 23 on the side of the bottom 21 away from the short side wall 222; and / or, the opening area of the breathable hole 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the opening area of the breathable hole 23 on the side of the long side wall 221 away from the short side wall 222. In this way, the uneven distribution of the breathable holes 23 on the bottom 21, the long side wall 221 of the side part 22, and the short side wall 222 of the side part 22 of the breathable separator 2 can be used to adjust the air flow velocity of the sound wave, so that when the air flows out from the long axis side 1311 and the short axis side 1312, the flow velocities are consistent, realizing the function of adjustable air flow velocity, so as to increase the acoustic resistance of the short side wall 222 or near the short side wall 222, reduce the amplitude of the short side wall 222 or near the short side wall 222, realize different damping to improve the vibration state, and thus effectively reduce and suppress the rocking vibration caused by the large torque in the direction of the long axis side 1311, improving the performance and reliability of the sound generating device 100.

[0102] Of course, in order to avoid limitations such as polarization or left and right swing of the voice coil 132 during vibration, in this embodiment, as Figure 1As shown, the vibration system 13 further includes a centering support piece 133. One end of the centering support piece 133 is connected to the end of the voice coil 132 away from the diaphragm 131, and the other end of the centering support piece 133 is connected to the housing 11. It can be understood that by providing the centering support piece 133, the centering support piece 133 can effectively prevent the voice coil 132 from being polarized or swinging left and right during vibration, so as to improve the vibration and sound generation effect of the diaphragm 131.

[0103] In the sound generating device 100 of the present invention, the diaphragm 131 of the sound generating element 1 has a long axis side 1311 and a short axis side 1312 that are connected end to end, and the length ratio of the long axis side 1311 to the short axis side 1312 is greater than 1. By providing air vent holes 14 on the sound generating element 1, the air pressure in the internal sound cavity of the sound generating element 1 is balanced, so as to ensure the sound generating effect and performance of the sound generating device 100; by disposing the breathable isolation member 2 on the sound generating element 1, that is, the bottom 21 of the breathable isolation member 2 is connected to the side of the sound generating element 1 facing away from the diaphragm 131, and the side portion 22 of the breathable isolation member 2 is connected to the periphery of the sound generating element 1, so as to cover the air vent holes 14 by the bottom 21 and / or the side portion 22 of the breathable isolation member 2, so as to achieve full filling when the sound generating device 100 is applied to electronic products or modules, so as to further improve the sound generating effect and acoustic performance; in order to ensure the breathability of the breathable isolation member 2, at least two of the bottom 21, the long side wall 221 of the side portion 22, and the short side wall 222 of the side portion 22 of the breathable isolation member 2 are provided with air vent holes 23 corresponding to the air vent holes 14, that is, the air vent holes 23 are arranged corresponding to the air vent holes 14, so that the air flow inside the sound generating element 1 passes through the air vent holes 14 and the air vent holes 23 to communicate with the outside, so as to ensure air pressure balance; further, by setting the opening area of the air vent holes 23 on the short side wall 222 to be smaller than the opening area of the air vent holes 23 on the bottom 21 and / or the opening area of the air vent holes 23 on the long side wall 221; and / or, the opening area of the air vent holes 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than the opening area of the air vent holes 23 on the side of the bottom 21 away from the short side wall 222; and / or, the opening area of the air vent holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the opening area of the air vent holes 23 on the side of the long side wall 221 away from the short side wall 222. In this way, the uneven distribution of the air vent holes 23 on the bottom 21, the long side wall 221 of the side portion 22, and the short side wall 222 of the side portion 22 of the breathable isolation member 2 can be used to adjust the air flow velocity of the sound wave, so that when the air flow flows out from the long axis side 1311 and the short axis side 1312, the flow velocity reaches the same, realizing the function of adjustable air flow velocity, realizing different damping to improve the vibration state, so as to effectively reduce the rocking vibration generated by the large torque in the direction of the long axis side 1311, and improve the acoustic performance and reliability of the sound generating device 100.

[0104] In one embodiment, ventilation holes 23 are provided on the bottom 21, the long side walls 221, and the short side walls 222; the opening area of the ventilation holes 23 on the short side walls 222 is smaller than the opening area of the ventilation holes 23 on the bottom 21 and the opening area of the ventilation holes 23 on the long side walls 221, respectively.

[0105] In this embodiment, as Figures 1 to 4 shown, by providing ventilation holes 23 on the bottom 21 of the ventilation isolation member 2, the long side walls 221 of the side portion 22, and the short side walls 222 of the side portion 22, that is, air leakage holes 14 are formed in the magnetic yoke 121, the edge magnetic circuit portion 123, and the housing 11 of the sound generating element 1 in the directions of the long axis side 1311 and the short axis side 1312. It can be understood that by setting the opening area of the ventilation holes 23 on the short side walls 222 to be smaller than the opening area of the ventilation holes 23 on the bottom 21 and the opening area of the ventilation holes 23 on the long side walls 221, that is, the opening density of the ventilation holes 23 on the short side walls 222 is smaller than the opening density of the ventilation holes 23 on the bottom 21 and the opening density of the ventilation holes 23 on the long side walls 221. In this way, the acoustic resistance of the short side walls 222 can be effectively increased, and the amplitude of the diaphragm 131 on the short side walls 222 can be reduced, thereby effectively suppressing the rocking vibration generated by the large torque of the diaphragm 131 in the direction of the long axis side 1311.

[0106] Optionally, the distribution of the ventilation holes 23 on the two short side walls 222 is the same, the distribution of the ventilation holes 23 on the long side walls 221 corresponding to the two long axis sides 1311 is the same, and the distribution of the ventilation holes 23 on the bottom 21 of the two ventilation isolation members 2 is centrosymmetrically arranged. With such an arrangement, the rocking vibration generated by the large torque in the direction of the long axis side 1311 can be effectively reduced, and the performance and reliability of the sound generating device 100 can be improved.

[0107] It can be understood that the opening area of the ventilation holes 23 on the short side walls 222 is the sum of the hole areas of all the ventilation holes 23 on the short side walls 222, the opening area of the ventilation holes 23 on the bottom 21 is the sum of the hole areas of all the ventilation holes 23 on the bottom 21, and the opening area of the ventilation holes 23 on the long side walls 221 is the sum of the hole areas of all the ventilation holes 23 on the long side walls 221. In this embodiment, the opening density of the ventilation holes 23 on the short side walls 222 is the sparsity of the short side walls 222. When the aperture of the ventilation holes 23 is the same, the number of the ventilation holes 23 on the short side walls 222 is smaller than the number of the ventilation holes 23 on the bottom 21 and the number of the ventilation holes 23 on the long side walls 221.

[0108] Optionally, the porosity of the short side wall 222 is 10% to 20%. The porosity of the short side wall 222 = the total cross-sectional area of the air-permeable holes 23 on the short side wall 222 / the total area of the short side wall 222. It can be understood that by controlling the porosity of the short side wall 222 within the range of 10% to 20%, the acoustic resistance of the short side wall 222 can be effectively increased, the amplitude of the diaphragm 131 on the short side wall 222 can be reduced, and thus the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction can be effectively suppressed. Optionally, the porosity of the short side wall 222 can be selected as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, etc., which is not limited herein.

[0109] It can be understood that the smaller the distance between adjacent air-permeable holes 23, the more air-permeable holes 23 can be arranged on the short side wall 222 to increase the porosity of the short side wall 222. Optionally, the distance between two adjacent air-permeable holes 23 on the short side wall 222 is 0.25 mm to 0.3 mm. By controlling the distance between the air-permeable holes 23 on the short side wall 222, the density of the air-permeable holes 23 on the short side wall 222 can be reduced, so as to reduce the number of air-permeable holes 23 and thus increase the acoustic resistance of the short side wall 222, reduce the amplitude of the diaphragm 131 on the short side wall 222, and effectively suppress the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction. The distance between two adjacent air-permeable holes 23 on the short side wall 222 can be selected as 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.30 mm, etc., which is not limited herein.

[0110] Considering the limitations of the processing technology of the thickness of the short side wall 222 and the forming technology of the air-permeable holes 23, if the distance between the air-permeable holes 23 on the short side wall 222 is too close, the remaining skeleton structure of the short side wall 222 is small, the structural strength and stability of the short side wall 222 are reduced, and problems such as deformation and even damage of the short side wall 222 are likely to occur; if the distance between the air-permeable holes 23 on the short side wall 222 is too far, the porosity of the short side wall 222 will be reduced, restricting the air permeability of the short side wall 222. Optionally, the thickness of the short side wall 222 is 0.1 mm to 0.15 mm.

[0111] It can be understood that by controlling the thickness of the short side wall 222, the thickness of the short side wall 222 is made greater than the thickness of the bottom 21 and the long side wall 221, so as to increase the acoustic resistance of the short side wall 222, reduce the amplitude of the diaphragm 131 on the short side wall 222, and effectively suppress the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction. The thickness of the short side wall 222 can be selected as 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, etc., which is not limited herein.

[0112] Optionally, the aperture of the ventilation holes 23 on the short side wall 222 is 0.05 mm to 0.1 mm. It can be understood that by controlling the aperture of the ventilation holes 23 on the short side wall 222 to be smaller than the aperture of the ventilation holes 23 on the bottom 21 and the long side wall 221, the acoustic resistance of the short side wall 222 is increased, and the amplitude of the diaphragm 131 on the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The aperture of the ventilation holes 23 on the short side wall 222 can be selected as 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc., which is not limited herein.

[0113] In this embodiment, the opening ratio of the bottom 21 and the opening ratio of the long side wall 221 can be the same or different. The opening ratio of the bottom 21 = the total cross-sectional area of the ventilation holes 23 on the bottom 21 / the total area of the bottom 21. The opening ratio of the long side wall 221 = the total cross-sectional area of the ventilation holes 23 on the long side wall 221 / the total area of the long side wall 221. It can be understood that the opening ratios of the bottom 21 and the long side wall 221 are less than or equal to 80%.

[0114] Optionally, the opening ratios of the bottom 21 and the long side wall 221 are 40% to 50%. It can be understood that by controlling the opening ratios of the bottom 21 and the long side wall 221 to be greater than the opening ratio of the short side wall 222, the acoustic resistance of the bottom 21 and the long side wall 221 is reduced. The opening ratios of the bottom 21 and the long side wall 221 can be selected as 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%.

[0115] It can be understood that the smaller the distance between adjacent ventilation holes 23, the more ventilation holes 23 can be arranged on the bottom 21 and the long side wall 221 to increase the opening ratios of the bottom 21 and the long side wall 221. Optionally, the distance between two adjacent ventilation holes 23 on the bottom 21 and the long side wall 221 is 0.1 mm to 0.15 mm, that is, the distance between the ventilation holes 23 on the bottom 21 and the long side wall 221 is smaller than the distance between the ventilation holes 23 on the short side wall 222. In this way, the acoustic resistance of the short side wall 222 is increased, and the amplitude of the diaphragm 131 on the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The distance between two adjacent ventilation holes 23 on the bottom 21 and the long side wall 221 can be selected as 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, etc., which is not limited herein.

[0116] Optionally, the aperture diameter of the ventilation holes 23 on the bottom 21 and the long side wall 221 is 0.15 mm to 0.2 mm. By controlling the aperture diameter of the ventilation holes 23 on the bottom 21 and the long side wall 221 to be larger than that of the ventilation holes 23 on the short side wall 222, the acoustic resistance of the short side wall 222 is increased, and the amplitude of the diaphragm 131 on the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The aperture diameter of the ventilation holes 23 on the bottom 21 and the long side wall 221 can be selected as 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, etc., which is not limited herein.

[0117] In this embodiment, the thickness of the bottom 21 and the long side wall 221 is 0.05 mm to 0.1 mm. The thickness of the bottom 21 and the long side wall 221 can be the same or different. It can be understood that by setting the thickness of the bottom 21 and the long side wall 221 to be less than the thickness of the short side wall 222, the acoustic resistance of the short side wall 222 is increased, and the amplitude of the diaphragm 131 on the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. Optionally, the thickness of the bottom 21 and the long side wall 221 can be selected as 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm.

[0118] In one embodiment, the bottom 21 and the long side wall 221 are provided with ventilation holes 23; the opening area of the ventilation holes 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than the opening area of the ventilation holes 23 on the side of the bottom 21 away from the short side wall 222; the opening area of the ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the opening area of the ventilation holes 23 on the side of the long side wall 221 away from the short side wall 222.

[0119] In this embodiment, as Figure 5As shown, ventilation holes 23 are provided on both the bottom 21 and the long side wall 221 of the side part 22 of the breathable separator 2. That is, vent holes 14 are formed in the magnetic yoke 121, the edge magnetic circuit part 123, and the housing 11 of the sounding element 1 in the direction of the long axis side 1311. It can be understood that by setting the opening area of the ventilation hole 23 on the side of the bottom 21 adjacent to the short side wall 222 to be smaller than the opening area of the ventilation hole 23 on the side of the bottom 21 away from the short side wall 222, that is, the opening density of the bottom 21 gradually increases from the side adjacent to the short side wall 222 to the side away from the short side wall 222; the opening area of the ventilation hole 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the opening area of the ventilation hole 23 on the side of the long side wall 221 away from the short side wall 222, that is, the opening density of the long side wall 221 gradually increases from the side adjacent to the short side wall 222 to the side away from the short side wall 222. In this way, the acoustic resistance at one end of the long side wall 221 and the bottom 21 close to the short side wall 222 can be effectively increased, and the amplitude of the diaphragm 131 at one end of the long side wall 221 and the bottom 21 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 generated due to the large torque in the direction of the long axis side 1311.

[0120] Optionally, the distribution of the ventilation holes 23 on the long side walls 221 of the breathable separator 2 corresponding to the two long axis sides 1311 is the same, the distribution of the ventilation holes 23 on the long side walls 221 corresponding to the same long axis side 1311 is centrosymmetrically arranged, and the distribution of the ventilation holes 23 on the bottom 21 of the two breathable separators 2 is centrosymmetrically arranged. With this arrangement, the rocking vibration generated due to the large torque in the direction of the long axis side 1311 can be effectively reduced, and the performance and reliability of the sound generating device 100 can be improved.

[0121] In this embodiment, when the aperture diameters of the ventilation holes 23 are the same, the number of ventilation holes 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than the number of ventilation holes 23 on the side of the bottom 21 away from the short side wall 222, and the number of ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 is smaller than the number of ventilation holes 23 on the side of the long side wall 221 away from the short side wall 222, thereby increasing the acoustic resistance at one end of the long side wall 221 and the bottom 21 close to the short side wall 222, and reducing the amplitude of the diaphragm 131 at one end of the long side wall 221 and the bottom 21 close to the short side wall 222, thereby effectively suppressing the rocking vibration of the diaphragm 131 generated due to the large torque in the direction of the long axis side 1311.

[0122] Optionally, the porosity of the bottom 21 adjacent to one side of the short side wall 222 is 10% to 30%, and the porosity of the bottom 21 away from one side of the short side wall 222 is less than or equal to 80%. Optionally, the porosity of the bottom 21 adjacent to one side of the short side wall 222 can be 10%, 13%, 15%, 18%, 20%, 23%, 25%, 28%, 30%, etc., which is not limited here. The porosity of the bottom 21 away from one side of the short side wall 222 is greater than 30% and less than or equal to 80%. In this way, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large moment.

[0123] It can be understood that the smaller the distance between adjacent air-permeable holes 23, the more air-permeable holes 23 can be arranged on the bottom 21 to increase the porosity of the bottom 21. Optionally, the distance between two adjacent air-permeable holes 23 located on the side of the bottom 21 adjacent to the short side wall 222 is 0.2 mm to 0.3 mm. By controlling the distance between the air-permeable holes 23 on the side of the bottom 21 adjacent to the short side wall 222 to be greater than the distance between the air-permeable holes 23 on the side of the bottom 21 away from the short side wall 222, the density of the air-permeable holes 23 on the side of the bottom 21 adjacent to the short side wall 222 can be reduced, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large moment. The distance between two adjacent air-permeable holes 23 located on the side of the bottom 21 adjacent to the short side wall 222 can be 0.2 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.3 mm, etc., which is not limited here.

[0124] Considering the limitations of the processing technology of the thickness of the bottom 21 and the forming technology of the air-permeable holes 23, if the distance between the air-permeable holes 23 on the bottom 21 is too close, the remaining skeleton structure of the bottom 21 is small, reducing the structural strength and stability of the bottom 21, and it is easy to have problems such as deformation or even damage of the bottom 21; if the distance between the air-permeable holes 23 on the bottom 21 is too far, the porosity of the bottom 21 will be reduced, restricting the air permeability of the bottom 21. Optionally, the thickness of the bottom 21 adjacent to the short side wall 222 is 0.1 mm to 0.25 mm.

[0125] It can be understood that by controlling the thickness of the bottom 21 adjacent to one side of the short side wall 222 to be greater than the thickness of the bottom 21 away from the short side wall 222, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 is increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 generated due to a large moment in the long axis side 1311 direction. The thickness of the bottom 21 adjacent to one side of the short side wall 222 can be selected as 0.1mm, 0.15mm, 0.18mm, 0.2mm, 0.23mm, 0.25mm, etc., which is not limited herein.

[0126] Optionally, the aperture of the air vent 23 located on the side of the bottom 21 adjacent to the short side wall 222 is 0.05mm to 0.15mm. It can be understood that by controlling the aperture of the air vent 23 on the side of the bottom 21 adjacent to the short side wall 222 to be smaller than the aperture of the air vent 23 on the side of the bottom 21 away from the short side wall 222, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 is increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 generated due to a large moment in the long axis side 1311 direction. The aperture of the air vent 23 located on the side of the bottom 21 adjacent to the short side wall 222 can be selected as 0.05mm, 0.08mm, 0.1mm, 0.13mm, 0.15mm, etc., which is not limited herein.

[0127] In this embodiment, the opening rate of the long side wall 221 adjacent to the short side wall 222 is 10% to 30%, and the opening rate of the long side wall 221 away from the short side wall 222 is less than or equal to 80%. Optionally, the opening rate of the long side wall 221 adjacent to the short side wall 222 can be selected as 10%, 13%, 15%, 18%, 20%, 23%, 25%, 28%, 30%, etc., which is not limited herein. The opening rate of the long side wall 221 away from the short side wall 222 is greater than 30% and less than or equal to 80%. In this way, the acoustic resistance at one end of the long side wall 221 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at one end of the long side wall 221 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 generated due to a large moment in the long axis side 1311 direction.

[0128] It can be understood that the smaller the distance between adjacent ventilation holes 23 is, the more ventilation holes 23 can be arranged on the long side wall 221, so as to increase the opening ratio of the long side wall 221. Optionally, the distance between two adjacent ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 is 0.2 mm to 0.3 mm. By controlling the distance between the ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 to be greater than the distance between the ventilation holes 23 on the side of the long side wall 221 away from the short side wall 222, the density of the ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 can be reduced, the acoustic resistance at one end of the long side wall 221 close to the short side wall 222 can be increased, and the amplitude of the vibration diaphragm 131 at one end of the long side wall 221 close to the short side wall 222 can be reduced, so as to effectively suppress the rocking vibration of the vibration diaphragm 131 in the direction of the long axis edge 1311 due to the large torque. The distance between two adjacent ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 can be selected as 0.2 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.3 mm, etc., which is not limited herein.

[0129] Considering the processing technology of the thickness of the long side wall 221 and the limitation of the forming process of the ventilation holes 23, if the distance between the ventilation holes 23 arranged on the long side wall 221 is too close, the remaining skeleton structure of the long side wall 221 is small, the structural strength and stability of the long side wall 221 are reduced, and problems such as deformation or even damage of the long side wall 221 are likely to occur; if the distance between the ventilation holes 23 arranged on the long side wall 221 is too far, the opening ratio of the long side wall 221 will be reduced, restricting the air permeability of the long side wall 221. Optionally, the thickness of the side of the long side wall 221 adjacent to the short side wall 222 is 0.1 mm to 0.25 mm.

[0130] It can be understood that by controlling the thickness of the side of the long side wall 221 adjacent to the short side wall 222 to be greater than the thickness of the side of the long side wall 221 away from the short side wall 222, the acoustic resistance at one end of the long side wall 221 close to the short side wall 222 can be increased, and the amplitude of the vibration diaphragm 131 at one end of the long side wall 221 close to the short side wall 222 can be reduced, so as to effectively suppress the rocking vibration of the vibration diaphragm 131 in the direction of the long axis edge 1311 due to the large torque. The thickness of the side of the long side wall 221 adjacent to the short side wall 222 can be selected as 0.1 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.25 mm, etc., which is not limited herein.

[0131] Optionally, the aperture of the ventilation hole 23 located on one side of the long side wall 221 adjacent to the short side wall 222 is 0.05 mm to 0.15 mm. It can be understood that by controlling the aperture of the ventilation hole 23 on the side of the long side wall 221 adjacent to the short side wall 222 to be smaller than that of the ventilation hole 23 on the side of the long side wall 221 away from the short side wall 222, the acoustic resistance at the end of the long side wall 221 close to the short side wall 222 is increased, and the amplitude of the diaphragm 131 at the end of the long side wall 221 close to the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The aperture of the ventilation hole 23 on the side of the long side wall 221 adjacent to the short side wall 222 can be selected as 0.05 mm, 0.08 mm, 0.1 mm, 0.13 mm, 0.15 mm, etc., which is not limited herein.

[0132] In one embodiment, the bottom 21 and the short side wall 222 are provided with ventilation holes 23; the opening area of the ventilation hole 23 on the short side wall 222 is smaller than that of the ventilation hole 23 on the bottom 21; the opening area of the ventilation hole 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than that of the ventilation hole 23 on the side of the bottom 21 away from the short side wall 222.

[0133] In this embodiment, as Figure 6 shown, by providing ventilation holes 23 on both the bottom 21 of the ventilation isolation member 2 and the short side wall 222 of the side portion 22, that is, air leakage holes 14 are formed in the magnetic yoke 121, the edge magnetic circuit portion 123, and the housing 11 of the sound generating element 1 in the direction of the short axis side 1312. It can be understood that by setting the opening area of the ventilation hole 23 on the short side wall 222 to be smaller than that of the ventilation hole 23 on the bottom 21, that is, the opening density of the short side wall 222 is smaller than that of the bottom 21; the opening area of the ventilation hole 23 on the side of the bottom 21 adjacent to the short side wall 222 is smaller than that of the ventilation hole 23 on the side of the bottom 21 away from the short side wall 222, that is, the opening density of the bottom 21 gradually increases from the side adjacent to the short side wall 222 to the side away from the short side wall 222.

[0134] Optionally, the distribution of the ventilation holes 23 on the short side walls 222 corresponding to the two short axis sides 1312 of the ventilation isolation member 2 is the same, and the distribution of the ventilation holes 23 on the bottom 21 of the two ventilation isolation members 2 is centrosymmetrically arranged. With such a setting, the rocking vibration generated due to the large torque in the direction of the long axis side 1311 can be effectively reduced, and the performance and reliability of the sound generating device 100 can be improved.

[0135] In this embodiment, when the aperture diameters of the ventilation holes 23 are the same, the number of ventilation holes 23 on the bottom 21 adjacent to one side of the short side wall 222 is less than the number of ventilation holes 23 on the bottom 21 far from the short side wall 222. That is, the opening density of the bottom 21 gradually increases from the side adjacent to the short side wall 222 to the side far from the short side wall 222. The number of ventilation holes 23 on the short side wall 222 is less than the number of ventilation holes 23 on the bottom 21, thereby increasing the acoustic resistance of the end of the bottom 21 close to the short side wall 222 and the short side wall 222, and reducing the amplitude of the diaphragm 131 at the end of the bottom 21 close to the short side wall 222 and the short side wall 222, so as to effectively suppress the rocking vibration of the diaphragm 131 caused by the large torque in the long axis side 1311 direction.

[0136] Optionally, the opening ratio of the bottom 21 adjacent to one side of the short side wall 222 is 10% - 15%, and the opening ratio of the bottom 21 far from the short side wall 222 is less than or equal to 80%. Optionally, the opening ratio of the bottom 21 adjacent to one side of the short side wall 222 can be selected as 10%, 11%, 12%, 13%, 14%, 15%, etc., which is not limited here. The opening ratio of the bottom 21 far from the short side wall 222 is greater than 30% and less than or equal to 80%. In this way, the acoustic resistance of the end of the bottom 21 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at the end of the bottom 21 close to the short side wall 222 can be reduced, so as to effectively suppress the rocking vibration of the diaphragm 131 caused by the large torque in the long axis side 1311 direction.

[0137] It can be understood that the smaller the distance between adjacent ventilation holes 23, the more ventilation holes 23 can be arranged on the bottom 21 to increase the opening ratio of the bottom 21. Optionally, the distance between two adjacent ventilation holes 23 on the bottom 21 adjacent to one side of the short side wall 222 is 0.3 mm - 0.4 mm. By controlling the distance between the ventilation holes 23 on the bottom 21 adjacent to one side of the short side wall 222 to be greater than the distance between the ventilation holes 23 on the bottom 21 far from the short side wall 222, the density of the ventilation holes 23 on the bottom 21 adjacent to one side of the short side wall 222 can be reduced, the acoustic resistance of the end of the bottom 21 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at the end of the bottom 21 close to the short side wall 222 can be reduced, so as to effectively suppress the rocking vibration of the diaphragm 131 caused by the large torque in the long axis side 1311 direction. The distance between two adjacent ventilation holes 23 on the bottom 21 adjacent to one side of the short side wall 222 can be selected as 0.3 mm, 0.32 mm, 0.35 mm, 0.38 mm, 0.4 mm, etc., which is not limited here.

[0138] Considering the limitations of the processing technology of the thickness of the bottom 21 and the forming technology of the ventilation holes 23, the ventilation holes 23 provided on the bottom 21 are too close to each other, resulting in a smaller skeleton structure retained on the bottom 21, reducing the structural strength and stability of the bottom 21, and prone to problems such as deformation or even damage of the bottom 21; if the ventilation holes 23 provided on the bottom 21 are too far apart, the opening rate of the bottom 21 will be reduced, restricting the breathability of the bottom 21. Optionally, the thickness of the bottom 21 adjacent to the short side wall 222 is 0.15 mm to 0.25 mm.

[0139] It can be understood that by controlling the thickness of the bottom 21 adjacent to the short side wall 222 to be greater than the thickness of the bottom 21 away from the short side wall 222, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 is increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction. The thickness of the bottom 21 adjacent to the short side wall 222 can be selected as 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.25 mm, etc., and is not limited herein.

[0140] Optionally, the aperture of the ventilation hole 23 located on the side of the bottom 21 adjacent to the short side wall 222 is 0.05 mm to 0.1 mm. It can be understood that by controlling the aperture of the ventilation hole 23 on the side of the bottom 21 adjacent to the short side wall 222 to be smaller than the aperture of the ventilation hole 23 on the side of the bottom 21 away from the short side wall 222, the acoustic resistance at one end of the bottom 21 close to the short side wall 222 is increased, and the amplitude of the diaphragm 131 at one end of the bottom 21 close to the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction. The aperture of the ventilation hole 23 located on the side of the bottom 21 adjacent to the short side wall 222 can be selected as 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc., and is not limited herein.

[0141] In this embodiment, the opening rate of the short side wall 222 is 10% to 15%. It can be understood that by controlling the opening rate of the short side wall 222 within the range of 10% to 15%, the acoustic resistance of the short side wall 222 is effectively increased, the amplitude of the diaphragm 131 on the short side wall 222 is reduced, and thus the rocking vibration of the diaphragm 131 caused by a large torque in the long axis side 1311 direction is effectively suppressed. Optionally, the opening rate of the short side wall 222 can be selected as 10%, 11%, 12%, 13%, 14%, 15%, etc., and is not limited herein. Optionally, the opening rate of the short side wall 222 is less than the opening rate of the side of the bottom 21 adjacent to the short side wall 222.

[0142] It can be understood that the smaller the distance between adjacent ventilation holes 23, the more ventilation holes 23 can be arranged on the long side wall 221, so as to increase the opening rate of the long side wall 221. Optionally, the distance between two adjacent ventilation holes 23 on the short side wall 222 is 0.3 mm to 0.4 mm. By controlling the distance between the ventilation holes 23 on the short side wall 222, the density of the ventilation holes 23 on the short side wall 222 is reduced, so as to reduce the number of ventilation holes 23, thereby increasing the acoustic resistance of the short side wall 222 and reducing the amplitude of the diaphragm 131 on the short side wall 222, so as to effectively suppress the rocking vibration of the diaphragm 131 generated by the large torque in the direction of the long axis edge 1311. The distance between two adjacent ventilation holes 23 on the short side wall 222 can be optionally 0.3 mm, 0.32 mm, 0.35 mm, 0.38 mm, 0.4 mm, etc., which are not limited herein.

[0143] Considering the processing technology of the thickness of the short side wall 222 and the forming technology of the ventilation holes 23, if the distance between the ventilation holes 23 on the short side wall 222 is too close, the remaining skeleton structure of the short side wall 222 is small, reducing the structural strength and stability of the short side wall 222, and it is easy to have problems such as deformation or even damage of the short side wall 222; if the distance between the ventilation holes 23 on the short side wall 222 is too far, the opening rate of the short side wall 222 will be reduced, restricting the air permeability of the short side wall 222. Optionally, the thickness of the short side wall 222 is 0.15 mm to 0.25 mm.

[0144] It can be understood that by controlling the thickness of the short side wall 222, the thickness of the short side wall 222 is made greater than the thickness of the bottom 21, so as to increase the acoustic resistance of the short side wall 222 and reduce the amplitude of the diaphragm 131 on the short side wall 222, so as to effectively suppress the rocking vibration of the diaphragm 131 generated by the large torque in the direction of the long axis edge 1311. The thickness of the short side wall 222 can be optionally 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.25 mm, etc., which are not limited herein.

[0145] Optionally, the aperture of the ventilation hole 23 on the short side wall 222 is 0.05 mm to 0.1 mm. It can be understood that by controlling the aperture of the ventilation hole 23 on the short side wall 222, the aperture of the ventilation hole 23 on the short side wall 222 is made smaller than the aperture of the ventilation hole 23 on the bottom 21, so as to increase the acoustic resistance of the short side wall 222 and reduce the amplitude of the diaphragm 131 on the short side wall 222, so as to effectively suppress the rocking vibration of the diaphragm 131 generated by the large torque in the direction of the long axis edge 1311. The aperture of the ventilation hole 23 on the short side wall 222 can be optionally 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc., which are not limited herein.

[0146] In one embodiment, ventilation holes 23 are provided on both the long sidewall 221 and the short sidewall 222; the opening area of the ventilation holes 23 on the short sidewall 222 is smaller than that of the ventilation holes 23 on the long sidewall 221; the opening area of the ventilation holes 23 on the side of the long sidewall 221 adjacent to the short sidewall 222 is smaller than that of the ventilation holes 23 on the side of the long sidewall 221 away from the short sidewall 222.

[0147] In this embodiment, as Figure 7 shown, by providing ventilation holes 23 on both the long sidewall 221 and the short sidewall 222 of the side portion 22 of the ventilation separator 2, that is, air leakage holes 14 are formed in the edge magnetic circuit portion 123 of the sounding element 1 and the housing 11 in the directions of the long axis side 1311 and the short axis side 1312. It can be understood that by setting the opening area of the ventilation holes 23 on the short sidewall 222 to be smaller than that of the ventilation holes 23 on the long sidewall 221, that is, the opening density of the short sidewall 222 is smaller than that of the long sidewall 221; the opening area of the ventilation holes 23 on the side of the long sidewall 221 adjacent to the short sidewall 222 is smaller than that of the ventilation holes 23 on the side of the long sidewall 221 away from the short sidewall 222, that is, the opening density of the long sidewall 221 gradually increases from the side adjacent to the short sidewall 222 to the side away from the short sidewall 222.

[0148] Optionally, the distribution of the ventilation holes 23 on the short sidewalls 222 corresponding to the two short axis sides 1312 of the ventilation separator 2 is the same, the distribution of the ventilation holes 23 on the long sidewalls 221 corresponding to the two long axis sides 1311 of the ventilation separator 2 is the same, and the distribution of the ventilation holes 23 on the long sidewall 221 corresponding to the same long axis side 1311 is centrosymmetrically arranged. With such a setting, the rocking vibration generated due to the large torque in the direction of the long axis side 1311 can be effectively reduced, and the performance and reliability of the sounding device 100 can be improved.

[0149] In this embodiment, when the aperture diameters of the ventilation holes 23 are the same, the number of the ventilation holes 23 on the side of the long sidewall 221 adjacent to the short sidewall 222 is smaller than the number of the ventilation holes 23 on the side of the long sidewall 221 away from the short sidewall 222, that is, the opening density of the long sidewall 221 gradually increases from the side adjacent to the short sidewall 222 to the side away from the short sidewall 222. The number of the ventilation holes 23 on the short sidewall 222 is smaller than the number of the ventilation holes 23 on the long sidewall 221. In this way, the acoustic resistance of the short sidewall 222 and the side of the long sidewall 221 adjacent to the short sidewall 222 can be effectively increased, and the amplitude of the vibration diaphragm 131 on the short sidewall 222 and the side of the long sidewall 221 adjacent to the short sidewall 222 can be reduced, thereby effectively suppressing the rocking vibration generated by the large torque of the vibration diaphragm 131 in the direction of the long axis side 1311.

[0150] Optionally, the porosity of the short sidewall 222 is 5% - 15%. It can be understood that by controlling the porosity of the short sidewall 222 within the range of 5% - 15%, the acoustic resistance of the short sidewall 222 can be effectively increased, the amplitude of the diaphragm 131 on the short sidewall 222 can be reduced, and thus the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 caused by a large torque can be effectively suppressed. The porosity of the short sidewall 222 can be optionally 5%, 8%, 10%, 13%, 15%, etc., which is not limited herein. Optionally, the porosity of the short sidewall 222 is less than the porosity of the long sidewall 221 adjacent to the short sidewall 222.

[0151] It can be understood that the smaller the distance between adjacent ventilation holes 23, the more ventilation holes 23 can be provided on the short sidewall 222 to increase the porosity of the short sidewall 222. Optionally, the distance between two adjacent ventilation holes 23 on the short sidewall 222 is 0.3 mm - 0.5 mm. By controlling the distance between the ventilation holes 23 on the short sidewall 222, the density of the ventilation holes 23 on the short sidewall 222 can be reduced, so as to reduce the number of ventilation holes 23 and thus increase the acoustic resistance of the short sidewall 222, reduce the amplitude of the diaphragm 131 on the short sidewall 222, and effectively suppress the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 caused by a large torque. The distance between two adjacent ventilation holes 23 on the short sidewall 222 can be optionally 0.3 mm, 0.32 mm, 0.35 mm, 0.38 mm, 0.4 mm, 0.43 mm, 0.45 mm, 0.48 mm, 0.5 mm, etc., which is not limited herein.

[0152] Considering the processing technology of the thickness of the short sidewall 222 and the forming technology of the ventilation holes 23, if the distance between the ventilation holes 23 provided on the short sidewall 222 is too close, the remaining skeleton structure of the short sidewall 222 is small, reducing the structural strength and stability of the short sidewall 222, and it is easy to have problems such as deformation or even damage of the short sidewall 222; if the distance between the ventilation holes 23 provided on the short sidewall 222 is too far, the porosity of the short sidewall 222 will be reduced, limiting the air permeability of the short sidewall 222. Optionally, the thickness of the short sidewall 222 is 0.15 mm - 0.25 mm.

[0153] It can be understood that by controlling the thickness of the short sidewall 222, the thickness of the short sidewall 222 is made greater than the thickness of the long sidewall 221, thereby increasing the acoustic resistance of the short sidewall 222, reducing the amplitude of the diaphragm 131 on the short sidewall 222, and effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 caused by a large torque. The thickness of the short sidewall 222 can be optionally 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.25 mm, etc., which is not limited herein.

[0154] Optionally, the aperture diameter of the ventilation holes 23 in the short side wall 222 is 0.03 mm to 0.1 mm. It can be understood that by controlling the aperture diameter of the ventilation holes 23 in the short side wall 222 to be smaller than that of the ventilation holes 23 in the long side wall 221, the acoustic resistance of the short side wall 222 is increased, and the amplitude of the diaphragm 131 in the short side wall 222 is reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The aperture diameter of the ventilation holes 23 in the short side wall 222 can be optionally 0.03 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc., which is not limited here.

[0155] In this embodiment, the opening rate of the long side wall 221 adjacent to the short side wall 222 is 5% to 15%, and the opening rate of the long side wall 221 away from the short side wall 222 is less than or equal to 80%. Optionally, the opening rate of the long side wall 221 adjacent to the short side wall 222 can be optionally 5%, 8%, 10%, 13%, 15%, etc., which is not limited here. The opening rate of the long side wall 221 away from the short side wall 222 is greater than 30% and less than or equal to 80%. In this way, the acoustic resistance of the end of the long side wall 221 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at the end of the long side wall 221 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque.

[0156] It can be understood that the smaller the distance between adjacent ventilation holes 23, the more ventilation holes 23 can be arranged in the long side wall 221 to increase the opening rate of the long side wall 221. Optionally, the distance between two adjacent ventilation holes 23 in the long side wall 221 adjacent to the short side wall 222 is 0.3 mm to 0.5 mm. By controlling the distance between the ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 to be greater than the distance between the ventilation holes 23 on the side of the long side wall 221 away from the short side wall 222, the density of the ventilation holes 23 on the side of the long side wall 221 adjacent to the short side wall 222 is reduced, the acoustic resistance of the end of the long side wall 221 close to the short side wall 222 can be increased, and the amplitude of the diaphragm 131 at the end of the long side wall 221 close to the short side wall 222 can be reduced, thereby effectively suppressing the rocking vibration of the diaphragm 131 in the direction of the long axis side 1311 due to the large torque. The distance between two adjacent ventilation holes 23 in the long side wall 221 adjacent to the short side wall 222 can be optionally 0.3 mm, 0.32 mm, 0.35 mm, 0.38 mm, 0.4 mm, 0.42 mm, 0.45 mm, 0.48 mm, 0.5 mm, etc., which is not limited here.

[0157] Considering the limitations of the processing technology for the thickness of the long side wall 221 and the forming technology for the ventilation holes 23, if the ventilation holes 23 provided on the long side wall 221 are too close to each other, the remaining skeleton structure of the long side wall 221 will be small, reducing the structural strength and stability of the long side wall 221, and prone to problems such as deformation or even damage of the long side wall 221; if the ventilation holes 23 provided on the long side wall 221 are too far apart, the porosity of the long side wall 221 will be reduced, restricting the air permeability of the long side wall 221. Optionally, the thickness of the long side wall 221 adjacent to the short side wall 222 is 0.15 mm to 0.25 mm.

[0158] It can be understood that by controlling the thickness of the long side wall 221 adjacent to the short side wall 222 to be greater than the thickness of the long side wall 221 away from the short side wall 222, the acoustic resistance at the end of the long side wall 221 close to the short side wall 222 is increased, the amplitude of the vibrating diaphragm 131 at the end of the long side wall 221 close to the short side wall 222 is reduced, and thus the rocking vibration of the vibrating diaphragm 131 generated by the large torque in the direction of the long axis edge 1311 can be effectively suppressed. The thickness of the long side wall 221 adjacent to the short side wall 222 can be selected as 0.15 mm, 0.18 mm, 0.2 mm, 0.23 mm, 0.25 mm, etc., and is not limited herein.

[0159] Optionally, the aperture of the ventilation hole 23 located on the long side wall 221 adjacent to the short side wall 222 is 0.03 mm to 0.1 mm. It can be understood that by controlling the aperture of the ventilation hole 23 on the long side wall 221 adjacent to the short side wall 222 to be smaller than the aperture of the ventilation hole 23 on the long side wall 221 away from the short side wall 222, the acoustic resistance at the end of the long side wall 221 close to the short side wall 222 is increased, the amplitude of the vibrating diaphragm 131 at the end of the long side wall 221 close to the short side wall 222 is reduced, and thus the rocking vibration of the vibrating diaphragm 131 generated by the large torque in the direction of the long axis edge 1311 can be effectively suppressed. The aperture of the ventilation hole 23 located on the long side wall 221 adjacent to the short side wall 222 can be selected as 0.03 mm, 0.05 mm, 0.08 mm, 0.1 mm, etc., and is not limited herein.

[0160] The present invention also provides an electronic device, which includes a device housing and the above-mentioned sound generating device 100, and the sound generating device 100 is provided in the device housing. The specific structure of the sound generating device 100 refers to the foregoing embodiments. Since this electronic device adopts all the technical solutions of all the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, and will not be elaborated herein one by one.

[0161] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the concept of the present invention by using the content of the specification and drawings 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, The sound emitting device includes: a sound emitting element, the sound emitting element is provided with a diaphragm, the diaphragm has a long axis side and a short axis side connected end to end, a length ratio of the long axis side to the short axis side is greater than 1, and the sound emitting element is further provided with a vent hole; and a breathable separator, the breathable separator includes a bottom and a side portion provided at a periphery of the bottom, the bottom is connected to a side of the sound emitting element facing away from the diaphragm, the side portion is connected to a periphery of the sound emitting element, the side portion includes a long side wall corresponding to the long axis side and a short side wall corresponding to the short axis side, and at least two of the bottom, the long side wall and the short side wall are provided with breathable holes corresponding to the vent holes; wherein, an opening area of the breathable hole of the short side wall is smaller than an opening area of the breathable hole of the bottom and / or an opening area of the breathable hole of the long side wall; and / or, an opening area of the breathable hole on a side of the bottom adjacent to the short side wall is smaller than an opening area of the breathable hole on a side of the bottom away from the short side wall; and / or, an opening area of the breathable hole on a side of the long side wall adjacent to the short side wall is smaller than an opening area of the breathable hole on a side of the long side wall away from the short side wall; the opening area of the breathable hole of the short side wall is a sum of areas of all the breathable holes on the short side wall, the opening area of the breathable hole of the bottom is a sum of areas of all the breathable holes on the bottom; the opening area of the breathable hole of the long side wall is a sum of areas of all the breathable holes on the long side wall; so as to increase a sound resistance of the short side wall or a position close to the short side wall, and reduce an amplitude of the short side wall or a position close to the short side wall.

2. The sound generating device according to claim 1, wherein The bottom, the long side wall and the short side wall are all provided with the breathable holes; the opening area of the breathable hole of the short side wall is respectively smaller than the opening area of the breathable hole of the bottom and the opening area of the breathable hole of the long side wall.

3. The sound generating device according to claim 2, wherein, An opening rate of the short side wall is 10% - 20%; and / or, a distance between two adjacent breathable holes located on the short side wall is 0.25 mm - 0.3 mm; and / or, a pore diameter of the breathable hole located on the short side wall is 0.05 mm - 0.1 mm; and / or, a thickness of the short side wall is 0.1 mm - 0.15 mm.

4. The sound generating device according to claim 2 or 3, characterized in that, An opening rate of the bottom and the long side wall is 40% - 50%; and / or, a distance between two adjacent breathable holes located on the bottom and the long side wall is 0.1 mm - 0.15 mm; and / or, a pore diameter of the breathable hole located on the bottom and the long side wall is 0.15 mm - 0.2 mm; and / or, a thickness of the bottom and the long side wall is 0.05 mm - 0.1 mm.

5. The sound generating device according to claim 1, characterized in that, The bottom and the long side wall are provided with the breathable holes; the opening area of the breathable hole on a side of the bottom adjacent to the short side wall is smaller than the opening area of the breathable hole on a side of the bottom away from the short side wall; the opening area of the breathable hole on a side of the long side wall adjacent to the short side wall is smaller than the opening area of the breathable hole on a side of the long side wall away from the short side wall.

6. The sound generating device according to claim 5, wherein The porosity of the bottom adjacent to one side of the short side wall is 10% - 30%, and the porosity of the bottom away from one side of the short side wall is less than or equal to 80%; And / or, the distance between two adjacent air vents located on the bottom adjacent to one side of the short side wall is 0.2 mm - 0.3 mm; And / or, the aperture diameter of the air vents located on the bottom adjacent to one side of the short side wall is 0.05 mm - 0.15 mm; And / or, the thickness of the bottom adjacent to one side of the short side wall is 0.1 mm - 0.25 mm; And / or, the opening density of the bottom gradually increases from the side adjacent to the short side wall to the side away from the short side wall.

7. The sound generating device according to claim 5 or 6, characterized in that, The porosity of the long side wall adjacent to one side of the short side wall is 10% - 30%, and the porosity of the long side wall away from one side of the short side wall is less than or equal to 80%; And / or, the distance between two adjacent air vents located on the long side wall adjacent to one side of the short side wall is 0.2 mm - 0.3 mm; And / or, the aperture diameter of the air vents located on the long side wall adjacent to one side of the short side wall is 0.05 mm - 0.15 mm; And / or, the thickness of the long side wall adjacent to one side of the short side wall is 0.1 mm - 0.25 mm; And / or, the opening density of the long side wall gradually increases from the side adjacent to the short side wall to the side away from the short side wall.

8. The sound generating device according to claim 1, wherein, The bottom and the short side wall are provided with the air vents; The opening area of the air vents on the short side wall is smaller than the opening area of the air vents on the bottom; the opening area of the air vents on the bottom adjacent to one side of the short side wall is smaller than the opening area of the air vents on the bottom away from one side of the short side wall.

9. The sound generating device according to claim 8, wherein, The porosity of the short side wall is 10% - 15%; And / or, the distance between two adjacent air vents located on the short side wall is 0.3 mm - 0.4 mm; And / or, the aperture diameter of the air vents located on the short side wall is 0.05 mm - 0.1 mm; And / or, the thickness of the short side wall is 0.15 mm - 0.25 mm.

10. The sound generating device according to claim 8 or 9, characterized in that, The porosity of the bottom adjacent to one side of the short side wall is 10% - 15%, and the porosity of the bottom away from one side of the short side wall is less than or equal to 80%; And / or, the distance between two adjacent air vents located on the bottom adjacent to one side of the short side wall is 0.3 mm - 0.4 mm; And / or, the aperture diameter of the air vents located on the bottom adjacent to one side of the short side wall is 0.05 mm - 0.1 mm; And / or, the thickness of the bottom adjacent to one side of the short side wall is 0.15 mm - 0.25 mm; And / or, the opening density of the bottom gradually increases from the side adjacent to the short side wall to the side away from the short side wall; And / or, the porosity of the short side wall is smaller than the porosity of the bottom adjacent to one side of the short side wall.

11. The sound generating device according to claim 1, wherein, Both the long side wall and the short side wall are provided with the air vents; The opening area of the air vents on the short side wall is smaller than the opening area of the air vents on the long side wall; the opening area of the air vents on the long side wall adjacent to one side of the short side wall is smaller than the opening area of the air vents on the long side wall away from one side of the short side wall.

12. The sound generating device according to claim 11, wherein, The porosity of the short side wall is 5% to 15%; And / or, the distance between two adjacent vent holes on the short side wall is 0.3 mm to 0.5 mm; And / or, the aperture diameter of the vent holes on the short side wall is 0.03 mm to 0.1 mm; And / or, the thickness of the short side wall is 0.15 mm to 0.25 mm.

13. The sound generating device according to claim 11 or 12, characterized in that, The porosity of the long side wall on the side adjacent to the short side wall is 5% to 15%, and the porosity of the long side wall on the side away from the short side wall is less than or equal to 80%; And / or, the distance between two adjacent vent holes on the long side wall on the side adjacent to the short side wall is 0.3 mm to 0.5 mm; And / or, the aperture diameter of the vent holes on the long side wall on the side adjacent to the short side wall is 0.03 mm to 0.1 mm; And / or, the thickness of the long side wall on the side adjacent to the short side wall is 0.15 mm to 0.25 mm; And / or, the vent hole density of the long side wall gradually increases from the side adjacent to the short side wall to the side away from the short side wall; And / or, the porosity of the short side wall is less than the porosity of the long side wall on the side adjacent to the short side wall.

14. The sound generating device according to claim 1, wherein, The ratio of the length of the long axis side to the length of the short axis side is greater than 1.2; And / or, the breathable separator is a steel mesh, a mesh cloth, a steel mesh plate, an aluminum mesh plate or a copper mesh plate; And / or, the breathable separator forms the vent holes by etching, weaving or injection molding; And / or, the breathable separator is an integrally formed structure; or, the breathable separator includes a plurality of them, and the plurality of breathable separators are arranged at intervals.

15. The sound generating device according to claim 1, wherein, The sounding monomer includes: A housing; A magnetic circuit system, a positioning protrusion facing the other is provided on the periphery of the housing and / or the magnetic circuit system, the positioning protrusion is connected to the periphery of the other, and a vent hole is formed between the magnetic circuit system and / or the housing and the magnetic circuit system; and A vibration system, the vibration system includes the diaphragm, the diaphragm is connected to the housing and is opposite to the magnetic circuit system, the diaphragm, the housing and the magnetic circuit system enclose a sound cavity, and the vent hole communicates with the sound cavity.

16. An electronic device, characterized in that, It includes a device housing and a sounding device as described in any one of claims 1 to 15, and the sounding device is arranged in the device housing.

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