Double-sided sound production monomer, sound production module and electronic equipment

Abstract

The invention discloses a double-sided sound production single body, a sound production module and electronic equipment, and relates to the technical field of acoustic-electric conversion, the double-sided sound production single body comprises a magnetic circuit system, two vibration systems and a basin stand, and two magnetic gaps are respectively formed in two sides of the magnetic circuit system along the axial direction; each vibration system comprises a vibrating diaphragm, a voice coil and a centering disk, and one end of each voice coil is suspended in the corresponding magnetic gap; a magnetic circuit system, a vibration system and a support are arranged in the basin frame, the two ends of the support are connected with the two centering supporting pieces respectively, and the two voice coils are connected with the inner sides of the two centering supporting pieces respectively. The bracket is annularly arranged outside the magnetic circuit system and supports the magnetic circuit system, and the basin stand is used for connecting and supporting the bracket and limiting the bracket. The magnetic circuit system is supported and fixed through cooperation of the support and the basin stand, supporting of the magnetic circuit system is fully guaranteed, the magnetic circuit system cannot be dislocated due to vibration in the using process, and therefore the acoustic performance of the double-face sound production single body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sound-to-electric conversion, and in particular to a double-sided sound-emitting unit, a sound-emitting module and an electronic device. Background Art

[0002] With the development of science and technology, users' demands for speaker functions are becoming increasingly diversified. They not only pursue higher sound quality and a wider frequency response range, but also expect the equipment to have a smaller size and stronger sound field coverage. However, the traditional single-sided sound-emitting unit has only one diaphragm, and its sound-emitting surface is single. It has problems such as limited sound field, strong directivity, and insufficient high-frequency ductility, which makes it difficult to fully meet the user's usage needs in multiple scenarios. These shortcomings have given rise to the rise of double-sided sound-emitting units with double-sided diaphragms. The double-sided diaphragms greatly improve the sound field coverage and sound quality performance by increasing the vibration area and the flexibility of the sound direction. Therefore, they have quickly become popular in high-end speakers, headphones, smart speakers and other products, and have gradually become an important direction for the development of the industry.

[0003] However, since the double-sided diaphragms of the double-sided sound-emitting units in the prior art need to share a common magnetic circuit system, the support of the magnetic circuit system cannot be guaranteed, which makes the magnetic circuit system unstable during use, resulting in a decrease in the acoustic performance of the double-sided sound-emitting units. Summary of the invention

[0004] The main purpose of the present invention is to propose a double-sided sound unit, a sound module and an electronic device, aiming to solve the problem in the prior art that the magnetic circuit system of the double-sided sound unit is unstable, resulting in a decrease in the acoustic performance of the double-sided sound unit.

[0005] To achieve the above-mentioned purpose, the double-sided sound-emitting unit proposed in the present invention comprises:

[0006] A magnetic circuit system, wherein two magnetic gaps are formed on both sides of the magnetic circuit system along the axial direction;

[0007] Two vibration systems, both of which vibrate along the axial direction, each of which comprises a diaphragm, a voice coil and a centering support, one end of each of the voice coils being suspended in the two magnetic gaps, and the other ends of each of the voice coils being connected to the two diaphragms;

[0008] A basin frame, wherein the magnetic circuit system, the vibration system and the bracket are arranged in the basin frame, and the two diaphragms are respectively connected to the two ends of the basin frame along the axial direction;

[0009] The two ends of the bracket along the axial direction are respectively connected to the outer sides of the two centering supports, and the two voice coils are respectively connected to the inner sides of the two centering supports. The bracket is arranged outside the magnetic circuit system and supports the magnetic circuit system. The basin frame connects and supports the bracket and limits the bracket.

[0010] In one embodiment, a limiting ring is provided on the inner wall of the basin frame, the bracket is supported and connected to the limiting ring, and the inner side of the limiting ring abuts against the outer wall of the bracket to limit the bracket.

[0011] In one embodiment, a boss is provided on the outer side of the bracket, the limiting ring forms a limiting hole adapted to the outer peripheral shape of the bracket, the bracket is installed in the limiting hole to limit the bracket, and the limiting ring is supported on the side of the boss facing one of the diaphragms and is connected to the boss.

[0012] In one embodiment, the side of the limiting ring facing the boss forms a supporting plane, the inner side of the limiting ring forms a limiting surface, the side of the boss facing one of the diaphragms is a contact side, the supporting plane is affixed and connected to the contact side, and the limiting surface is abutted and fitted against the outer wall surface of the bracket.

[0013] In one embodiment, the support plane protrudes toward the boss to form a limiting protrusion, and the limiting protrusion is located outside the boss. The limiting protrusion is used to limit the boss when the limiting surface abuts and fits against the outer wall of the bracket.

[0014] In one embodiment, the outer wall of the bracket protrudes outwardly along the radial direction of the magnetic circuit system to form the annular boss, and the limiting protrusion is an annular protrusion arranged outside the boss.

[0015] In one embodiment, the outer circumference size of the magnetic circuit system is greater than or equal to the outer circumference size of the centering support plate, and the bracket is arranged in a split type.

[0016] In one embodiment, the bracket includes a frame body and a cover body which are separately arranged, and the cover body and the frame body are arranged in sequence along the axial direction and are detachably connected. The boss is arranged on the outer side of the frame body, and two openings are respectively formed on one end of the cover body away from the frame body and one end of the frame body away from the cover body, and the two centering support plates are respectively installed at the two openings.

[0017] In one embodiment, the frame includes a limiting portion, a supporting portion and a mounting portion which are sequentially connected along the axial direction, the limiting portion is arranged in a ring outside the magnetic circuit system, and one end of the limiting portion away from the supporting portion is detachably connected to the cover body, the supporting portion is bent inward from the limiting portion and supports the magnetic circuit assembly, the boss is provided on the outer side of the supporting portion, and the mounting portion is bent from the supporting portion in a direction away from the cover body and surrounds one of the openings.

[0018] In one embodiment, the outer wall of the support portion extends outwardly in the radial direction of the magnetic circuit system to form the boss.

[0019] In one embodiment, the outer edge of the magnetic circuit system is recessed inward along the radial direction of the magnetic circuit system to form two snap-in grooves, and the two snap-in grooves are located on both sides of the magnetic circuit system along the axial direction. A first snap-in block is formed on the side of the cover body facing the frame body, and a second snap-in block is formed at the connection between the support portion and the limiting portion. The first snap-in block and the second snap-in block are respectively snap-fitted with the two snap-in grooves.

[0020] In one embodiment, the mounting portion is provided with a plurality of first air holes spaced apart along its circumference, and the sum of the areas of the plurality of first air holes accounts for 30% to 60% of the surface area of ​​the mounting portion;

[0021] and / or,

[0022] The cover body is provided with a plurality of second air holes at intervals along its circumference, and the sum of the areas of the plurality of second air holes accounts for 30% to 60% of the surface area of ​​the cover body;

[0023] and / or,

[0024] The support portion is provided with a plurality of heat dissipation holes spaced apart along its circumference, and the sum of the areas of the plurality of heat dissipation holes accounts for 30% to 60% of the surface area of ​​the support portion.

[0025] In one embodiment, the basin frame and the frame body are integrally formed; or, the basin frame and the cover body are integrally formed.

[0026] In one embodiment, the outer circumference of the magnetic circuit system is smaller than the outer circumference of the centering support plate, and the bracket is provided in an integrated manner.

[0027] In one embodiment, the bracket includes an inner frame and an outer frame that are integrally arranged, the outer frame is arranged on the outer side of the inner frame and is connected to the inner frame through a connecting plate, the outer side of the outer frame is provided with the boss, the inner frame is arranged outside the magnetic circuit system and supports the magnetic circuit system, and the two ends of the outer frame along the axial direction are respectively connected to the outer sides of the two centering support plates.

[0028] In one embodiment, the inner frame is attached to the outer side of the magnetic circuit system, and the magnetic circuit system protrudes outward along one side edge of the axial direction to form an abutment platform, and the abutment platform supports and is connected to one end of the inner frame facing the abutment platform.

[0029] In one embodiment, the connection plate is arranged on the outer side of the inner frame, and a plurality of reinforcing ribs are arranged at intervals along the circumference of the connection plate; one end of each reinforcing rib is connected to the outer frame, and the other end is connected to the inner frame.

[0030] In one embodiment, the outer frame includes a first sub-frame and a second sub-frame, the connecting plate is disposed between the first sub-frame and the second sub-frame, and the outer edge of the connecting plate protrudes outwardly along the radial direction to form the annular boss.

[0031] In one embodiment, the first subframe is provided with a plurality of third air holes spaced apart along its circumference, and the sum of the areas of the plurality of third air holes accounts for 30% to 60% of the surface area of ​​the first subframe;

[0032] and / or,

[0033] The second sub-frame is provided with a plurality of fourth ventilation holes spaced apart along its circumference, and the sum of the areas of the plurality of fourth ventilation holes accounts for 30% to 60% of the surface area of ​​the second sub-frame.

[0034] In one embodiment, the outer circumference of the magnetic circuit system is smaller than the outer circumference of the centering support plate, and the basin frame and the bracket are integrally formed.

[0035] In one embodiment, the two magnetic gaps are staggered along the radial direction of the magnetic circuit system.

[0036] In one embodiment, the inner wall of the basin frame extends inwardly along the radial direction of the magnetic circuit system to form the limiting ring.

[0037] In one embodiment, the limiting ring is located in the middle of the basin frame along the axial direction, and the inner side of the limiting ring abuts against the outer wall of the bracket in the middle of the axial direction to limit the bracket in the middle of the basin frame along the axial direction, and the central axis of the basin frame is arranged to coincide with the central axis of the bracket.

[0038] The present invention also provides a sound module, which includes a shell and the above-mentioned double-sided sound unit installed in the shell.

[0039] The present invention further provides an electronic device, comprising a protective shell and the above-mentioned sound module arranged in the protective shell.

[0040] The technical solution of the present invention is to provide support for the magnetic circuit system by additionally setting a bracket in the basin frame, and to provide support for the magnetic circuit system by a bracket arranged outside the magnetic circuit system, and then to connect and support the bracket through the basin frame, so that the magnetic circuit system is stably supported, and the stability of the magnetic circuit system during use is improved. At the same time, the basin frame limits the bracket to prevent the bracket from shifting during vibration, thereby ensuring that the bracket can always fix the magnetic circuit system at the target position, and will not cause the magnetic circuit system to shift, thereby further improving the stability of the magnetic circuit system, avoiding the displacement or tilting problem caused by the lack of support and limit of the magnetic circuit system during vibration, ensuring the symmetry and stability of the magnetic gap, and at the same time, the support of the magnetic circuit system can be achieved through one bracket, reducing the number of components in the double-sided sound-emitting monomer, reducing the difficulty of assembly, and improving the assembly efficiency. The present invention realizes the support, fixation and limit of the magnetic circuit system through the cooperation of the bracket and the basin frame, so that the support of the magnetic circuit system is fully guaranteed, and the magnetic circuit system will not shift due to vibration during use, thereby improving the acoustic performance of the double-sided sound-emitting monomer. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the structure of a double-sided sound-emitting unit provided by an embodiment of the present invention;

[0043] Figure 2 A schematic cross-sectional structure diagram of a double-sided sound-emitting unit provided in one embodiment of the present invention;

[0044] Figure 3 A schematic diagram of a partial cross-sectional structure of a double-sided sound-emitting unit provided by an embodiment of the present invention;

[0045] Figure 4 A schematic diagram of the structure of a hidden basin frame of a double-sided sound-emitting unit provided by an embodiment of the present invention;

[0046] Figure 5 A schematic structural diagram of a double-sided sound-emitting unit provided by another embodiment of the present invention;

[0047] Figure 6 A schematic cross-sectional structure diagram of a double-sided sound-emitting unit provided by another embodiment of the present invention;

[0048] Figure 7 A schematic structural diagram of a hidden basin frame of a double-sided sound-emitting unit provided by another embodiment of the present invention;

[0049] Figure 8 A schematic structural diagram of a bracket for a double-sided sound-emitting unit provided in another embodiment of the present invention.

[0050] Description of Figure Numbers:

[0051] 100, double-sided sound-emitting unit; 1, magnetic circuit system; 11, magnetic gap; 12, clamping groove; 13, abutment platform; 2, vibration system; 21, diaphragm; 22, voice coil; 23, centering support; 3, basin frame; 31, bracket; 310, opening; 311, boss; 312, contact side; 313, frame; 3131, limit part; 3132, support part; 3133, installation part; 3134, second clamping block; 3135 , first air vent; 314, cover body; 3141, first clamping block; 3142, second air vent; 315, inner frame; 316, outer frame; 3161, first sub-frame; 3162, second sub-frame; 3163, third air vent; 3164, fourth air vent; 317, connecting plate; 318, reinforcing rib; 32, limiting ring; 321, supporting plane; 322, limiting surface; 323, limiting protrusion; 33, limiting hole.

[0052] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Since the double-sided diaphragms of the double-sided sound-emitting units in the prior art need to share a common magnetic circuit system, the support of the magnetic circuit system cannot be guaranteed, which makes the magnetic circuit system unstable during use, resulting in a decrease in the acoustic performance of the double-sided sound-emitting units.

[0057] In order to solve the above problems, the present invention proposes a double-sided sound-emitting unit 100 .

[0058] Please combine Figure 1 , Figure 2 , Figure 5 and Figure 6 The double-sided sound-emitting unit 100 of the present embodiment includes a magnetic circuit system 1, two vibration systems 2 and a basin frame 3. Two magnetic gaps 11 are formed on both sides of the magnetic circuit system 1 along the axial direction; the two vibration systems 2 vibrate along the axial direction, and each vibration system 2 includes a diaphragm 21, a voice coil 22 and a centering support plate 23. One end of the two voice coils 22 is suspended in the two magnetic gaps 11, and the other end of the two voice coils 22 is connected to the two diaphragms 21 respectively; the basin frame 3 is provided with a magnetic circuit system 1, a vibration system 2 and a bracket 31, the two diaphragms 21 are respectively connected to the two ends of the basin frame 3 along the axial direction, the two ends of the bracket 31 are respectively connected to the outer sides of the two centering supports 23, and the two voice coils 22 are respectively connected to the inner sides of the two centering supports 23; the bracket 31 is arranged outside the magnetic circuit system and supports the magnetic circuit system, and the basin frame 3 connects and supports the bracket 31 and limits the bracket 31.

[0059] It should be noted that the axial direction is the axial direction of the magnetic circuit system, that is, the vibration direction of the voice coil, that is Figure 2 and Figure 6 The axial direction in the figure is the direction perpendicular to the vibration direction of the voice coil, that is, Figure 2 and Figure 6 In the radial direction, the sound-emitting monomer can be applied to an electronic device, and the electronic device can be, in this embodiment, the double-sided sound-emitting monomer 100 is used as a double-sided speaker for explanation,

[0060] The technical solution of the present invention is to additionally arrange a bracket 31 in the basin frame 3, provide support for the magnetic circuit system 1 through the bracket 31 arranged outside the magnetic circuit system 1, and then connect and support the bracket 31 through the basin frame 3, so that the magnetic circuit system 1 is stably supported, thereby improving the stability of the magnetic circuit system 1 during use. At the same time, the basin frame 3 limits the bracket 31 to prevent the bracket 31 from shifting during vibration, thereby ensuring that the bracket 31 can always fix the magnetic circuit system 1 at the target position without causing the magnetic circuit system 1 to shift, thereby further improving the stability of the magnetic circuit system 1, avoiding the displacement or tilt of the magnetic circuit system 1 due to lack of support and limitation during vibration, ensuring the symmetry and stability of the magnetic gap 11, and at the same time, the magnetic circuit system 1 can be supported by a bracket 31, thereby reducing the number of components in the double-sided sound unit 100, reducing the difficulty of assembly, and improving the assembly efficiency. The present invention realizes the support and fixation of the magnetic circuit system 1 through the cooperation of the bracket 31 and the basin frame 3, so that the support of the magnetic circuit system 1 is fully guaranteed. During use, the magnetic circuit system 1 will not be dislocated due to vibration, thereby improving the acoustic performance of the double-sided sound unit 100.

[0061] In one embodiment, a limiting ring 32 is provided on the inner wall of the basin frame 3, the bracket 31 is supported and connected to the limiting ring 32, and the inner side of the limiting ring 32 abuts against the outer wall of the bracket 31 to limit the bracket 31. The limiting ring 32 is provided on the inner wall of the basin frame 3, and the limiting ring 32 is wound around the outside of the bracket 31 and abuts against the outer wall of the bracket 31, thereby increasing the contact area with the bracket 31, so that the force is evenly applied to each part of the bracket 31, further improving the stability of the basin frame 3 supporting the bracket 31, ensuring the stability of the bracket 31, so that the magnetic circuit system 1 can be stably supported and limited.

[0062] Furthermore, a boss 311 is provided on the outer side of the bracket 31, and a limiting ring 32 surrounds a limiting hole 33 adapted to the outer peripheral shape of the bracket 31. The bracket 31 is installed in the limiting hole 33 to limit the bracket 31. The limiting ring 32 is supported on the side of the boss 311 facing one of the diaphragms 21 and is connected to the boss 311.

[0063] The limiting hole 33 is adapted to the outer peripheral shape of the bracket 31, so that when the bracket 31 is located in the limiting hole 33, it can fit tightly with the hole wall of the limiting hole 33, so that the limiting of the bracket 31 is more stable, and there will be no radial deviation of the magnetic circuit system 1. At the same time, the connection between the boss 311 and the limiting ring 32 makes the bracket 31 fixed in the axial direction, and there will be no axial deviation, thereby further enhancing the stability and accuracy of the magnetic circuit system 1 and improving the acoustic performance of the double-sided sound-emitting unit 100.

[0064] In one embodiment, the side of the limiting ring 32 facing the boss 311 forms a support plane 321, the inner side of the limiting ring 32 forms a limiting surface 322, the side of the boss 311 facing one of the diaphragms 21 is the contact side 312, the supporting plane 321 is attached and connected to the contact side 312, and the limiting surface 322 is in contact with and fits the outer wall surface of the bracket 31. The supporting plane 321 is attached to the contact side 312 of the boss 311, and the limiting surface 322 is attached to the outer wall surface of the bracket 31, so that the supporting plane 321 and the boss 311 bracket 31 form multiple points of contact, and the limiting surface 322 forms multiple points of contact with the outer wall surface of the bracket 31. By expanding the contact area, the stress concentration at the contact position is effectively dispersed, and the fixing stability of the limiting ring 32 and the bracket 31 is improved, thereby improving the support stability of the magnetic circuit system 1.

[0065] In one embodiment, the support plane 321 protrudes toward the boss 311 to form a limiting protrusion 323, which is located outside the boss 311. The limiting protrusion 323 is used to limit the boss 311 when the limiting surface 322 abuts and fits the outer wall surface of the bracket 31. The limiting protrusion 323 provides additional mechanical support and forms multi-point contact with the boss 311, further enhancing the connection strength between the limiting ring 32, the bracket 31 and the boss 311, and improving the overall stability of the magnetic circuit system 1. The limiting protrusion 323 provides a radial constraint force on the boss 311 along the magnetic circuit system 1 to prevent the boss 311 from deviating radially along the magnetic circuit system 1, thereby ensuring the overall stability of the bracket 31 and improving the stability of the support for the magnetic circuit system 1.

[0066] In one embodiment, the outer wall of the bracket 31 protrudes outward along the radial direction of the magnetic circuit system 1 to form an annular boss 311, and the limiting protrusion 323 is an annular protrusion arranged outside the boss 311. The annular boss 311 and the annular limiting protrusion 323 can maximize the contact area between the boss 311 and the limiting ring 32, and increase the contact area between the limiting protrusion 323 and the boss 311, which can effectively disperse the force, reduce the pressure per unit area of ​​the boss 311 and the limiting protrusion 323, and improve the overall mechanical stability of the double-sided sound unit 100. The boss 311 and the bracket 31 are integrally formed, so that there is no assembly error between the two, and the accuracy is improved. The integrally formed boss 311 and the bracket 31 are more continuous and uniform, avoiding the stress concentration problem caused by the contact surface or the connector in the traditional assembly design, and extending the service life of the component.

[0067] In one embodiment, a plurality of air holes are arranged on the outer wall of the bracket 31 at intervals along the circumference thereof, and the air holes are connected to the inner cavity of the bracket 31 , thereby improving the air flow effect of the bracket 31 and improving the acoustic performance of the double-sided sound-emitting unit 100 .

[0068] In one embodiment, the outer circumference of the magnetic circuit system 1 is greater than or equal to the outer circumference of the centering support piece 23, and the bracket 31 is set in a split manner. Since both ends of the bracket 31 have openings 310 for installing the centering support piece 23, which will be described later, and the size of the opening 310 is adapted to the size of the centering support piece 23, when the outer circumference of the magnetic circuit system 1 is greater than or equal to the outer circumference of the centering support piece 23, that is, when the projection of the magnetic circuit system 1 along the axial direction completely covers the projection of the centering support piece 23 along the axial direction, the magnetic circuit system 1 cannot pass through the opening 310 of the bracket 31 to be installed in the bracket 31, so the bracket 31 needs to be set in a split manner, and the two sides of the magnetic circuit system 1 are covered respectively, so that the magnetic circuit system 1 is accommodated inside the bracket 31, so the bracket 31 needs to be set in a split structure.

[0069] Please combine Figures 1 to 4 Specifically, the bracket 31 includes a frame body 313 and a cover body 314 which are separately arranged. The cover body 314 and the frame body 313 are arranged in sequence along the axial direction and are detachably connected. A boss 311 is arranged on the outer side of the frame body 313. Two openings 310 are respectively formed on one end of the cover body 314 away from the frame body 313 and one end of the frame body 313 away from the cover body 314. Two centering support plates 23 are respectively installed at the two openings 310.

[0070] The split frame 313 and cover 314 make the assembly process more flexible and convenient for disassembly, installation, maintenance and repair, thereby improving assembly efficiency and reducing maintenance difficulty. The two centering supports 23 are respectively installed at the two openings 310, which will not occupy the longitudinal space, thereby reducing the overall volume of the double-sided sound unit 100.

[0071] Furthermore, the frame 313 includes a limiting portion 3131, a supporting portion 3132 and a mounting portion 3133 which are connected in sequence along the axial direction. The limiting portion 3131 is arranged in a ring outside the magnetic circuit system 1, and one end of the limiting portion 3131 away from the supporting portion 3132 is detachably connected to the cover body 314. The supporting portion 3132 is bent inward from the limiting portion 3131 and supports the magnetic circuit assembly. A boss 311 is provided on the outer side of the supporting portion 3132. The mounting portion 3133 is bent from the supporting portion 3132 in a direction away from the cover body 314 and surrounds one of the openings 310.

[0072] The bent portion is bent inward and flush with the magnetic circuit system 1, and provides support for the magnetic circuit system 1, so that the magnetic circuit assembly fits tightly against the bent portion, and the supporting effect is stable, thereby preventing the magnetic circuit system 1 from shifting during vibration, thereby improving the stability of the magnetic circuit system 1. The mounting portion 3133 is bent in a direction away from the cover body 314 to avoid interference with the magnetic circuit system 1, while reserving vibration space for the voice coil 22, thereby improving the stability of the double-sided sound unit 100.

[0073] In one embodiment, the outer wall of the support portion 3132 extends radially outwardly along the magnetic circuit system 1 to form a boss 311. The boss 311 and the support portion 3132 are integrally formed so that there is no assembly error between the two, which improves accuracy. The integrally formed boss 311 and support portion 3132 are more continuous and uniform, avoiding the stress concentration problem caused by contact surfaces or connectors in traditional assembly designs, and extending the service life of the components. The support portion 3132 extends axially, and the outer wall of the support portion 3132 extends radially along the magnetic circuit system 1 to form the boss 311, so that the supporting force received by the boss 311 extends axially, and the axial direction is the vibration direction of the voice coil 22, and most of the force during the vibration process is along the axial direction, so the axial supporting force can further improve the vibration resistance of the bracket 31, thereby improving the stability of the magnetic circuit system 1.

[0074] In one embodiment, the outer edge of the magnetic circuit system 1 is recessed radially inwardly along the magnetic circuit system 1 to form two snap-in grooves 12, and the two snap-in grooves 12 are located on both sides of the magnetic circuit system 1 along the axial direction. The cover body 314 forms a first snap-in block 3141 on the side facing the frame body 313, and a second snap-in block 3134 is formed at the connection between the support portion 3132 and the limiting portion 3131. The first snap-in block 3141 and the second snap-in block 3134 are snap-fitted with the two snap-in grooves 12 respectively.

[0075] The first clamping block 3141 and the second clamping block 3134 are respectively engaged with the two clamping grooves 12, so that the assembly of the cover body 314, the bracket 31 and the magnetic circuit system 1 is more stable, and the looseness caused by external force or vibration between the cover body 314, the bracket 313 and the magnetic circuit system 1 is effectively prevented. This precise clamping method ensures a stable connection between the magnetic circuit system 1 and the bracket 31, reduces vibration or displacement caused by the gap between components, and at the same time, during the assembly process, the bracket 31 and the magnetic circuit system 1 can be quickly assembled by engaging the first clamping block 3141 and the second clamping block 3134 with the corresponding clamping grooves 12, thereby improving assembly efficiency.

[0076] In one embodiment, the mounting portion 3133 is provided with a plurality of first air holes 3135 spaced apart along its circumference, and the sum of the areas of the plurality of first air holes 3135 accounts for 30% to 60% of the surface area of ​​the mounting portion 3133;

[0077] The first air holes 3135 can increase internal air circulation and improve the acoustic performance of the double-sided sound unit 100. It can be understood that when the sum of the areas of the multiple first air holes 3135 accounts for 30% to 60% of the surface area of ​​the mounting part 3133, the overall strength of the mounting part 3133 can be ensured while maximizing the ventilation effect of the mounting part 3133, thereby increasing the airflow fluidity at the mounting part 3133 and improving the acoustic performance of the double-sided sound unit 100.

[0078] In another embodiment, the cover body 314 is provided with a plurality of second air holes 3142 at intervals along its circumference, and the sum of the areas of the plurality of second air holes 3142 accounts for 30% to 60% of the surface area of ​​the cover body 314.

[0079] The second air holes 3142 can increase internal air circulation and improve the acoustic performance of the double-sided sound-emitting unit 100. It can be understood that when the sum of the areas of the plurality of second air holes 3142 accounts for 30% to 60% of the surface area of ​​the cover body 314, the overall strength of the cover body 314 can be ensured while maximizing the ventilation effect of the cover body 314, thereby increasing the airflow fluidity at the cover body 314 and improving the acoustic performance of the double-sided sound-emitting unit 100.

[0080] In another embodiment, the support portion 3132 is provided with a plurality of heat dissipation holes spaced apart along its circumference, and the sum of the areas of the plurality of heat dissipation holes accounts for 30% to 60% of the surface area of ​​the support portion 3132. The heat dissipation holes help the magnetic circuit system 1 to dissipate heat, and improve the heat dissipation effect of the magnetic circuit system 1. It can be understood that when the sum of the areas of the plurality of heat dissipation holes accounts for 30% to 60% of the surface area of ​​the support portion 3132, the heat dissipation effect of the cover body 314 can be maximized while ensuring the overall strength of the cover body 314, thereby increasing the airflow flow at the cover body 314, avoiding overheating and malfunction of the magnetic circuit system 1, and improving the stability of the magnetic circuit system 1.

[0081] In one embodiment, the basin frame 3 is integrally formed with the frame body 313; or, the basin frame 3 is integrally formed with the cover body 314. One of the frame body 313 or the cover body 314 is integrally formed with the basin frame 3. It can be understood that since the cover body 314 and the frame body 313 need to be separately provided and buckled from both ends of the magnetic circuit system 1, respectively, only one of the cover body 314 and the frame body 313 can be integrally formed with the basin frame 3. The integrally formed setting with the basin frame 3 can reduce the assembly error, make the bracket 31 more accurate, and provide a better support effect for the magnetic circuit system 1. At the same time, it can also increase the overall strength and improve the assembly efficiency.

[0082] Specifically, one of the frame 313 or the cover 314 is integrally formed with the basin frame 3 through 3D printing technology. 3D printing technology can save materials and reduce costs. At the same time, it has high precision and can form various complex shapes with high precision. It can also achieve seamless connection of the product, thereby improving the overall strength.

[0083] In another embodiment, the outer circumference of the magnetic circuit system 1 is smaller than the outer circumference of the centering support 23, and the bracket 31 is provided in an integrated manner. Since both ends of the bracket 31 have openings 310 for installing the centering support 23, and the size of the opening 310 is adapted to the size of the centering support 23, when the outer circumference of the magnetic circuit system 1 is smaller than the outer circumference of the centering support 23, that is, when the projection of the centering support 23 along the axial direction covers the projection of the magnetic circuit system 1 along the axial direction, the magnetic circuit system 1 can be directly installed in the bracket 31 through the opening 310 of the bracket 31, so the bracket 31 can be provided in an integrated manner to improve the overall accuracy and overall strength of the bracket 31.

[0084] Please combine Figures 5 to 8 Specifically, the bracket 31 includes an inner frame 315 and an outer frame 316 that are integrally arranged. The outer frame 316 is arranged on the outer side of the inner frame 315 and is connected to the inner frame 315 through a connecting plate 317. A boss 311 is arranged on the outer side of the outer frame 316. The inner frame 315 is arranged on the outside of the magnetic circuit system 1 and supports the magnetic circuit system 1. The two ends of the outer frame 316 along the axial direction are respectively connected to the outer sides of the two centering support plates 23.

[0085] The bracket 31 is an integrated bracket 31, which has higher stability and strength, and the manufacturing process is simpler, which reduces the manufacturing cost. The integrated bracket 31 has no assembly error, higher precision, and better support effect for the magnetic circuit system 1. The inner frame 315 is arranged outside the magnetic circuit system 1, so that the contact area between the inner frame 315 and the magnetic circuit system 1 is maximized, thereby ensuring the stability of the inner frame 315 supporting the magnetic circuit system 1; the outer frame 316 and the inner frame 315 are connected by a connecting plate 317, and the outer frame 316 is connected to the basin frame 3, so that the magnetic circuit system 1 is fixed in the basin frame 3 by the outer frame 316 and the inner frame 315, thereby improving the stability of the magnetic circuit system 1.

[0086] Further, the inner frame 315 is fitted to the outer side of the magnetic circuit system 1, and the edge of one side of the magnetic circuit system 1 protrudes outward along the axial direction to form an abutment platform 13, and the abutment platform 13 supports and is connected to one end of the inner frame 315 facing the abutment platform 13. The inner frame 315 is fitted to the outer side of the magnetic circuit system 1, which can increase the contact area between the inner frame 315 and the magnetic circuit system 1 and increase the contact stability between the two. On the other hand, there is no gap between the inner frame 315 and the magnetic circuit system 1, which can avoid the displacement of the magnetic circuit system 1 during the vibration process, thereby improving the stability of the magnetic circuit system 1. The abutment platform 13 formed by the edge of the magnetic circuit system 1 protruding outward abuts against one end of the inner frame 315, thereby providing an axial support force to the magnetic circuit system 1 through the inner frame 315, further improving the stability of the magnetic circuit system 1.

[0087] In one embodiment, the connecting plate 317 is arranged on the outer side of the inner frame 315, and the connecting plate 317 is provided with a plurality of reinforcing ribs 318 at intervals along the circumference thereof; one end of each reinforcing rib 318 is connected to the outer frame 316, and the other end is connected to the inner frame 315. By providing a plurality of reinforcing ribs 318 on the connecting plate 317, the connection strength between the inner and outer frames 316 can be effectively improved to prevent local stress concentration or deformation. These reinforcing ribs 318 provide additional support, so that the inner frame 315 and the outer frame 316 can be connected together more firmly, thereby enhancing the overall rigidity of the bracket 31, preventing the bracket 31 from deforming during the vibration process, and thus improving the stability of the vibration system 2 and the magnetic circuit system 1.

[0088] In one embodiment, the outer frame 316 includes a first sub-frame 3161 and a second sub-frame 3162, and a connecting plate 317 is arranged between the first sub-frame 3161 and the second sub-frame 3162, and the outer edge of the connecting plate 317 protrudes outward along the radial direction of the magnetic circuit system 1 to form an annular boss 311. The boss 311 is arranged in an annular shape, which can maximize the contact area between the boss 311 and the limiting ring 32, and increase the contact area between the limiting protrusion 323 and the boss 311, which can effectively disperse the force, reduce the pressure on the unit area of ​​the boss 311 and the limiting protrusion 323, and improve the overall mechanical stability of the double-sided sound-emitting unit 100.

[0089] In one embodiment, the first sub-frame 3161 is provided with a plurality of third air holes 3163 spaced apart along its circumference, and the sum of the areas of the plurality of third air holes 3163 accounts for 30% to 60% of the surface area of ​​the first sub-frame 3161; the third air holes 3163 can increase internal air circulation, improve the acoustic performance of the double-sided sound-emitting unit 100, and enhance the acoustic performance of the double-sided sound-emitting unit 100. It can be understood that when the sum of the areas of the plurality of third air holes 3163 accounts for 30% to 60% of the surface area of ​​the first sub-frame 3161, the ventilation effect of the first sub-frame 3161 can be maximized while ensuring the overall strength of the first sub-frame 3161, thereby increasing the airflow fluidity at the first sub-frame 3161 and improving the acoustic performance of the double-sided sound-emitting unit 100.

[0090] In another embodiment, the second sub-frame 3162 is provided with a plurality of fourth air holes 3164 spaced apart along its circumference, and the sum of the areas of the plurality of fourth air holes accounts for 30% to 60% of the surface area of ​​the second sub-frame. The fourth air holes 3164 can increase internal air circulation, improve the acoustic performance of the double-sided sound-emitting monomer 100, and enhance the acoustic performance of the double-sided sound-emitting monomer 100. It can be understood that when the sum of the areas of the plurality of fourth air holes 3164 accounts for 30% to 60% of the surface area of ​​the second sub-frame 3162, the ventilation effect of the second sub-frame 3162 can be maximized while ensuring the overall strength of the second sub-frame 3162, thereby increasing the airflow flow at the second sub-frame 3162 and improving the acoustic performance of the double-sided sound-emitting monomer 100.

[0091] In one embodiment, the basin frame 3 is integrally formed with the bracket 31. It can be understood that since the cover body 314 and the bracket body 313 are integrally formed, the bracket 31 can be directly integrally formed with the basin frame 3, and the integrally formed setting with the basin frame 3 can reduce the assembly error, so that the bracket 31 has higher precision, and the supporting effect for the magnetic circuit system 1 is better, and the overall strength can be increased, and the assembly efficiency can be improved.

[0092] Specifically, the bracket 31 and the basin frame 3 are integrally formed through 3D printing technology. 3D printing technology can save materials and reduce costs. At the same time, it has high precision and can form various complex shapes with high precision. It can also achieve seamless connection of products, thereby improving the overall strength. It can be understood that the inner frame 315, outer frame 316 and connecting plate 317 of the bracket 31 itself can also be integrally formed through 3D printing.

[0093] In one embodiment, the two magnetic gaps 11 are staggered along the radial direction of the magnetic circuit system 1. The staggered distribution of the two magnetic gaps 11 can enable the two voice coils 22 to be directly staggered to avoid interference between the voice coils 22 during vibration, thereby improving the acoustic performance of the double-sided sound unit 100.

[0094] In one embodiment, the inner wall of the basin frame 3 extends radially inwardly along the magnetic circuit system 1 to form a limiting ring 32. The limiting ring 32 is integrally formed with the basin frame 3, and there is no assembly error, which improves the accuracy of the limiting ring 32 and the overall strength of the limiting ring 32 and the basin frame 3. During use, the limiting ring 32 will not be separated from the basin frame 3, and the vibration resistance of the basin frame 3 and the limiting ring 32 is improved, so that the support of the bracket 31 by the basin frame 3 is more stable, and the stability of the bracket 31 is improved.

[0095] In one embodiment, the limiting ring 32 is located in the middle of the basin frame 3 in the axial direction, and the inner side of the limiting ring 32 abuts against the middle of the outer wall of the bracket 31 in the axial direction, so as to limit the bracket 31 in the middle of the basin frame 3 in the axial direction, and make the central axis of the basin frame 3 coincide with the central axis of the bracket 31. The limiting ring 32 is arranged in the middle of the axial direction of the basin frame 3 and ensures that the central axes of the two coincide, which can effectively maintain the symmetry of the structure. The symmetrical design can balance the distribution of vibration and pressure, making the entire double-sided sound-emitting unit 100 more stable during operation, avoiding the generation of eccentric loads and uneven stress, and thus improving the acoustic performance of the double-sided sound-emitting unit 100.

[0096] The present invention also provides a sound module, which includes a shell and the above-mentioned double-sided sound unit 100 installed in the shell. The specific structure of the double-sided sound unit 100 refers to the above embodiment. Since the sound module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0097] The present invention also proposes an electronic device, which includes a protective shell and the above-mentioned sound module arranged in the protective shell. The specific structure of the sound module refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the electronic device can be a terminal device, a vehicle-mounted device, and various intelligent mobile terminals, such as a mobile phone, a computer, etc.

[0098] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A double-sided sound-emitting unit, characterized in that: include: A magnetic circuit system, wherein two magnetic gaps are formed on both sides of the magnetic circuit system along the axial direction; Two vibration systems, both of which vibrate along the axial direction, each of which comprises a diaphragm, a voice coil and a centering support, one end of each of the voice coils being suspended in the two magnetic gaps, and the other ends of each of the voice coils being connected to the two diaphragms; A basin frame, wherein the magnetic circuit system, the vibration system and the bracket are arranged in the basin frame, and the two diaphragms are respectively connected to the two ends of the basin frame along the axial direction; The two ends of the bracket along the axial direction are respectively connected to the outer sides of the two centering supports, and the two voice coils are respectively connected to the inner sides of the two centering supports. The bracket is arranged outside the magnetic circuit system and supports the magnetic circuit system. The basin frame connects and supports the bracket and limits the bracket.

2. The double-sided sound-emitting unit according to claim 1, characterized in that: The inner wall of the basin frame is provided with a limiting ring, the bracket is supported and connected to the limiting ring, and the inner side of the limiting ring abuts against the outer wall of the bracket to limit the bracket.

3. The double-sided sound-emitting unit according to claim 2, characterized in that: A boss is arranged on the outer side of the bracket, the limiting ring forms a limiting hole adapted to the outer peripheral shape of the bracket, the bracket is installed in the limiting hole to limit the bracket, and the limiting ring is supported on the side of the boss facing one of the diaphragms and is connected to the boss.

4. The double-sided sound-emitting unit according to claim 3, characterized in that: The side of the limiting ring facing the boss forms a supporting plane, the inner side of the limiting ring forms a limiting surface, the side of the boss facing one of the diaphragms is a contact side, the supporting plane is abutted and connected to the contact side, and the limiting surface is abutted and fitted to the outer wall surface of the bracket.

5. The double-sided sound-emitting unit according to claim 4, characterized in that: The support plane protrudes toward the boss to form a limiting protrusion, and the limiting protrusion is located outside the boss. The limiting protrusion is used to limit the boss when the limiting surface abuts and fits against the outer wall surface of the bracket.

6. The double-sided sound-emitting unit according to claim 5, characterized in that: The outer wall of the bracket protrudes outwardly along the radial direction of the magnetic circuit system to form the annular boss, and the limiting protrusion is an annular protrusion arranged outside the boss.

7. The double-sided sound-emitting unit according to any one of claims 2 to 6, characterized in that: The outer circumference size of the magnetic circuit system is greater than or equal to the outer circumference size of the centering support piece, and the bracket is arranged in a split type.

8. The double-sided sound-emitting unit according to claim 7, characterized in that: The bracket includes a frame body and a cover body which are separately arranged, and the cover body and the frame body are arranged in sequence along the axial direction and are detachably connected. The boss is arranged on the outer side of the frame body, and two openings are respectively formed on one end of the cover body away from the frame body and one end of the frame body away from the cover body, and the two centering support plates are respectively installed at the two openings.

9. The double-sided sound-emitting unit according to claim 8, characterized in that: The frame includes a limiting portion, a supporting portion and a mounting portion which are sequentially connected along the axial direction, the limiting portion is arranged in a ring outside the magnetic circuit system, and one end of the limiting portion away from the supporting portion is detachably connected to the cover body, the supporting portion is bent inward from the limiting portion and supports the magnetic circuit assembly, the boss is provided on the outer side of the supporting portion, and the mounting portion is bent from the supporting portion in a direction away from the cover body and surrounds one of the openings.

10. The double-sided sound-emitting unit according to claim 9, characterized in that: The outer wall of the support portion extends outwardly along the radial direction of the magnetic circuit system to form the boss.

11. The double-sided sound-emitting unit according to claim 9, characterized in that: The outer edge of the magnetic circuit system is recessed inward along the radial direction of the magnetic circuit system to form two snap-in grooves, and the two snap-in grooves are located on both sides of the magnetic circuit system along the axial direction. The cover body forms a first snap-in block on the side facing the frame body, and a second snap-in block is formed at the connection between the support portion and the limiting portion. The first snap-in block and the second snap-in block are respectively snap-fitted with the two snap-in grooves.

12. The double-sided sound-emitting unit according to claim 9, characterized in that: The mounting portion is provided with a plurality of first air holes spaced apart along its circumference, and the sum of the areas of the plurality of first air holes accounts for 30% to 60% of the surface area of ​​the mounting portion; and / or, The cover body is provided with a plurality of second air holes at intervals along its circumference, and the sum of the areas of the plurality of second air holes accounts for 30% to 60% of the surface area of ​​the cover body; and / or, The support portion is provided with a plurality of heat dissipation holes spaced apart along its circumference, and the sum of the areas of the plurality of heat dissipation holes accounts for 30% to 60% of the surface area of ​​the support portion.

13. The double-sided sound-emitting unit according to claim 9, characterized in that: The basin frame and the frame body are integrally formed; or, the basin frame and the cover body are integrally formed.

14. The double-sided sound-emitting unit according to any one of claims 2 to 6, characterized in that: The outer circumference size of the magnetic circuit system is smaller than the outer circumference size of the centering support plate, and the bracket is arranged in an integrated manner.

15. The double-sided sound-emitting unit according to claim 14, characterized in that: The bracket includes an inner frame and an outer frame that are integrally arranged. The outer frame is arranged on the outer side of the inner frame and is connected to the inner frame through a connecting plate. The outer side of the outer frame is provided with the boss. The inner frame is arranged outside the magnetic circuit system and supports the magnetic circuit system. The two ends of the outer frame along the axial direction are respectively connected to the outer sides of the two centering support plates.

16. The double-sided sound-emitting unit according to claim 15, characterized in that: The inner frame is attached to the outer side of the magnetic circuit system. The magnetic circuit system protrudes outward along one side edge of the axial direction to form an abutment platform. The abutment platform supports and is connected to one end of the inner frame facing the abutment platform.

17. The double-sided sound-emitting unit according to claim 15, characterized in that: The connecting plate is arranged on the outer side of the inner frame, and a plurality of reinforcing ribs are arranged at intervals along the circumference of the connecting plate; one end of each reinforcing rib is connected to the outer frame, and the other end is connected to the inner frame.

18. The double-sided sound-emitting unit according to claim 15, characterized in that: The outer frame includes a first sub-frame and a second sub-frame, the connecting plate is disposed between the first sub-frame and the second sub-frame, and the outer edge of the connecting plate protrudes outwardly along the radial direction of the magnetic circuit system to form the annular boss.

19. The double-sided sound-emitting unit according to claim 18, characterized in that: The first subframe is provided with a plurality of third air holes spaced apart along its circumference, and the sum of the areas of the plurality of third air holes accounts for 30% to 60% of the surface area of ​​the first subframe; and / or, The second sub-frame is provided with a plurality of fourth ventilation holes spaced apart along its circumference, and the sum of the areas of the plurality of fourth ventilation holes accounts for 30% to 60% of the surface area of ​​the second sub-frame.

20. The double-sided sound-emitting unit according to claim 12, characterized in that: The basin frame and the bracket are integrally formed.

21. The double-sided sound-emitting unit according to any one of claims 1 to 6, characterized in that: The two magnetic gaps are distributed in a staggered manner along the radial direction of the magnetic circuit system.

22. The double-sided sound-emitting unit according to any one of claims 1 to 6, characterized in that: The inner wall of the basin frame extends inwardly along the radial direction of the magnetic circuit system to form the limiting ring.

23. The double-sided sound-emitting unit according to any one of claims 1 to 6, characterized in that: The limiting ring is located in the middle of the basin frame along the axial direction, and the inner side of the limiting ring abuts against the outer wall of the bracket in the middle of the axial direction to limit the bracket in the middle of the basin frame along the axial direction, and make the central axis of the basin frame coincide with the central axis of the bracket.

24. A sound module, characterized in that: The sound module includes a shell and a double-sided sound unit as described in any one of claims 1 to 23 installed in the shell.

25. An electronic device, characterized in that: The electronic device includes a protective shell and a sound module as described in claim 24 arranged in the protective shell.

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