Sound production monomer and electronic equipment

Abstract

The utility model discloses a sounding monomer and an electronic device, and relates to the sound energy conversion technology field, the sounding monomer comprises a magnetic circuit system and a vibration system, the magnetic circuit system comprises a support plate, a center magnetic circuit and a side magnetic circuit, the center magnetic circuit and the side magnetic circuit are arranged on the support plate, the center magnetic circuit and the side magnetic circuit are spaced, and a magnetic gap is formed between the center magnetic circuit and the side magnetic circuit; the central magnetic circuit comprises a first magnet, a magnetic conductive plate and a second magnet which are sequentially arranged in the first direction, and the first magnet and the second magnet are magnetized in the first direction and are opposite in magnetizing direction; the vibration system comprises a diaphragm and an annular voice coil used for driving the diaphragm to vibrate in the first direction, one end of the annular voice coil is connected with the diaphragm, the other end is located in the magnetic gap, and the diaphragm is provided with a waterproof breathable structure. According to the loudspeaker, the first magnet and the second magnet are magnetized relatively, and the magnetic lines are corrected in cooperation with the magnetic conductive plate, so that the magnetic lines are focused at the position of the magnetic conductive plate, the induction intensity of the voice coil is enhanced, the magnetic field driving force is improved, and the acoustic performance of the loudspeaker is improved.

Description

Technical Field

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

[0002] With the development of thinner smart wearable products, the space left for speakers is gradually decreasing while the installation space of other components remains unchanged. This makes it difficult to improve the acoustic performance of speakers by increasing their volume. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve the acoustic performance of speakers, so that they cannot meet the user's usage needs. Utility Model Content

[0003] The main purpose of the utility model is to provide a sound-emitting unit and an electronic device, aiming to solve the problem of how to improve the acoustic performance of a loudspeaker.

[0004] To achieve the above-mentioned purpose, the utility model provides a sound-emitting monomer, wherein the aspect ratio of the sound-emitting monomer is greater than 2:1, and the sound-emitting monomer comprises:

[0005] A magnetic circuit system comprising a support plate and a central magnetic circuit and a side magnetic circuit disposed on the support plate, wherein the central magnetic circuit and the side magnetic circuit are spaced apart and a magnetic gap is formed therebetween, the central magnetic circuit comprising a first magnet, a magnetic conductive plate, and a second magnet sequentially arranged along a first direction, the second magnet being disposed on the support plate, the first magnet and the second magnet being magnetized along the first direction and in opposite directions;

[0006] A vibration system includes a diaphragm and an annular voice coil for driving the diaphragm to vibrate along the first direction, one end of the annular voice coil is connected to the diaphragm, and the other end is located in the magnetic gap, and the diaphragm has a waterproof and breathable structure.

[0007] In one embodiment, the support plate is made of magnetic conductive material, and the side magnetic circuit includes a first side magnet, an intermediate side magnet, and a second side magnet arranged in sequence along the first direction. The first side magnet is arranged corresponding to the first magnet and has a magnetization direction opposite to that of the first magnet. The second side magnet is arranged corresponding to the second magnet and has a magnetization direction opposite to that of the second magnet. The intermediate side magnet is magnetized along the second direction, the first direction and the second direction are perpendicular, and the polarity of the magnetic pole of the intermediate side magnet facing the magnetic gap is opposite to the polarity of the magnetic pole of the first side magnet and the second side magnet away from the intermediate side magnet, so that the side magnetic circuit can form a magnetic field enhancement side facing the magnetic gap.

[0008] In one embodiment, the height of the middle side magnet along the first direction is not less than half the height of the annular voice coil along the first direction;

[0009] And / or, the height of the middle side magnet along the first direction is not less than the height of the first side magnet along the first direction;

[0010] And / or, the height of the middle side magnet along the first direction is not greater than the height of the second side magnet along the first direction;

[0011] And / or, the height of the middle edge magnet along the first direction is greater than the height of the magnetic conductive plate along the first direction.

[0012] In one embodiment, the support plate is made of magnetic conductive material, and the side magnetic circuit includes a first side magnet, a side magnetic conductive plate, and a second side magnet arranged in sequence along the first direction. The first side magnet is arranged corresponding to the first magnet and has an opposite magnetizing direction to the first magnet. The second side magnet is arranged corresponding to the second magnet and has an opposite magnetizing direction to the second magnet.

[0013] In one embodiment, a height of the second side magnet along the first direction is not less than a height of the first side magnet along the first direction.

[0014] In one embodiment, the sound-emitting unit includes a shell, the diaphragm includes a folding ring and a reinforcement portion provided in a central area of ​​the folding ring, and the folding ring is connected to the shell.

[0015] In one embodiment, the vibration system further comprises a bracket, and the reinforcement portion and the annular voice coil are respectively connected to two ends of the bracket;

[0016] Alternatively, the reinforcement portion includes a support portion that bends and extends along the first direction, and the support portion is connected to the annular voice coil;

[0017] And / or, the reinforcement portion is provided with a reinforcement rib, and the reinforcement rib is located in a central area of ​​the reinforcement portion and extends along the long side direction of the shell.

[0018] In one embodiment, the reinforcement portion is provided with a plurality of micropores, and the sound-emitting unit further includes a waterproof and breathable membrane covering the micropores;

[0019] Alternatively, at least a portion of the reinforcing portion is made of a breathable material, and the sound-emitting unit further includes a waterproof breathable membrane attached to the breathable material.

[0020] In one embodiment, the housing includes an annular body and a side wall connected to the annular body, the side wall is provided with a through hole, and the side magnetic circuit has a protrusion extending into the through hole.

[0021] In one embodiment, the folding ring, the reinforcing portion and the shell are integrally injection-molded parts;

[0022] Alternatively, the sound-emitting unit further includes a waterproof sealing ring, which is arranged around the folding ring. The waterproof sealing ring, the folding ring, the reinforcement part and the shell are an integral injection-molded part.

[0023] In one embodiment, the sound unit further includes a centering support plate, which includes a first fixing portion, an elastic arm portion, and a second fixing portion. The first fixing portion is arranged on the shell, the second fixing portion is connected to the annular voice coil, and the two ends of the elastic arm portion are respectively connected to the first fixing portion and the second fixing portion.

[0024] In one embodiment, the centering support plates include two, and the two centering support plates are respectively arranged at the two ends of the long side direction of the shell. The two centering support plates are connected by a conductive connecting part, and the conductive connecting part is also provided with an external solder pad that can be electrically connected to an external circuit.

[0025] In one embodiment, the conductive connection portion and the centering support piece are integrally formed.

[0026] And / or, the conductive connecting part includes a main body connecting the two centering support plates and an external connecting part connected to one end of the main body, the external connecting part is provided with the external welding pad, the main body is provided on the side of the magnetic circuit system, and the outer surface of the main body does not exceed the outer surface of the shell.

[0027] In one embodiment, the shell includes an annular body and a side wall connected to the annular body, the support plate includes a base plate and a surrounding plate, the central magnetic circuit and the side magnetic circuit are arranged on the base plate, the surrounding plate is connected to the side wall, and the first fixing portion is clamped between the surrounding plate and the side wall.

[0028] In one embodiment, the sound unit further includes a front cover, which is arranged on a side of the diaphragm away from the magnetic circuit system, and has mesh holes. The sound unit further includes a dustproof net, which covers the mesh holes.

[0029] In one embodiment, the sound unit also includes a waterproof sealing ring, which is connected to the side of the shell away from the magnetic circuit system. The waterproof sealing ring is arranged around the folding ring and forms an annular step at the connection with the folding ring. The front cover is arranged on the annular step and is located on the inner side of the waterproof sealing ring.

[0030] In one embodiment, the housing has a central portion and end portions located at both ends of the central portion along a longitudinal direction of the housing, and an outer surface of the central portion protrudes toward a side away from the annular voice coil.

[0031] In one embodiment, the aspect ratio of the sound unit is not greater than 10:1.

[0032] The present invention further provides an electronic device, which includes a housing and the above-mentioned sound-emitting unit, wherein the sound-emitting unit is arranged in the housing.

[0033] The technical solution of the present invention magnetizes the first magnet and the second magnet of the central magnetic circuit relative to each other, and then uses a magnetic conductive plate to correct the magnetic lines of force, so that the magnetic lines of force are focused on the position of the magnetic conductive plate, thereby increasing the number of magnetic lines of force passing through the annular voice coil, thereby enhancing the induction strength of the voice coil, and further improving the magnetic field driving force, thereby improving the acoustic performance of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0035] Figure 1 This is a structural diagram of an embodiment of a sound-emitting unit provided by the utility model;

[0036] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of a sound-emitting unit provided by the present utility model;

[0037] Figure 3 A schematic cross-sectional view of an embodiment of a side magnetic circuit of a sound-emitting unit provided by the present invention having a middle side magnet;

[0038] Figure 4 This is a schematic cross-sectional view of a portion of the structure of an embodiment of a sound-emitting unit provided by the present invention;

[0039] Figure 5 A structural diagram showing a partial structure of an embodiment of a sound-emitting unit provided by the present invention from another perspective;

[0040] Figure 6 This is a structural schematic diagram of an embodiment in which a diaphragm provided by the present invention is arranged on a housing;

[0041] Figure 7 This is a structural diagram of an embodiment of a magnetic circuit system provided by the present invention being arranged on a support plate;

[0042] Figure 8 for Figure 3 A schematic structural diagram of an embodiment of the magnetization direction of the middle magnetic circuit system;

[0043] Figure 9 A structural diagram of an embodiment of the present invention in which a reinforcing rib is provided on the reinforcing portion;

[0044] Figure 10 A schematic cross-sectional view of an embodiment of a side magnetic conductive plate provided by the utility model for a side magnetic circuit of a sound-emitting unit;

[0045] Figure 11 for Figure 10 A schematic structural diagram of an embodiment of the magnetization direction of the middle magnetic circuit system;

[0046] Figure 12 This is a structural diagram of an embodiment of a protrusion provided at the center of the shell of the sound-emitting unit provided by the present invention;

[0047] Figure 13 This is a structural schematic diagram of an embodiment of the present invention in which a sound-emitting unit is arranged in a housing.

[0048] Description of Figure Numbers:

[0049] 100. Sounding unit; 1. Magnetic circuit system; 11. Center magnetic circuit; 111. First magnet; 112. Magnetic plate; 113. Second magnet; 12. Side magnetic circuit; 121. First side magnet; 122. Middle side magnet; 123. Second side magnet; 124. Raised portion; 125. Side magnetic plate; 13. Support plate; 131. Bottom plate; 132. Enclosure; 133. Mounting ear; 1331. Mounting hole; 134. Avoidance groove; 14. Magnetic gap; 15. Vibration gap; 2. Vibration system; 21. Diaphragm; 211. Folding ring; 212. Reinforcement; 2121. Micro Hole; 213, reinforcing rib; 22, annular voice coil; 23, bracket; 231, connecting portion; 232, conducting portion; 2321, weight-reducing hole; 3, waterproof sealing ring; 31, annular step; 4, waterproof breathable membrane; 5, housing; 51, annular body; 52, side wall; 521, through hole; 53, inserting portion; 54, center portion; 55, end portion; 6, centering support; 61, first fixing portion; 62, elastic arm portion; 63, second fixing portion; 7, conductive connecting portion; 71, main body; 72, external connecting portion; 721, external solder pad; 8, front cover; 81, mesh; 9, dust screen;

[0050] 200. Shell.

[0051] 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

[0052] 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0053] 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 indications will also change accordingly.

[0054] 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 for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. 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 mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] With the development of thinner smart wearable products, the space left for speakers is gradually decreasing while the installation space of other components remains unchanged. This makes it difficult to improve the acoustic performance of speakers by increasing their volume. The limited internal space restricts the acoustic performance of existing speakers, making it difficult to improve the acoustic performance of speakers, so that they cannot meet the user's usage needs.

[0056] In view of this, it is necessary to propose a sound unit and an electronic device, aiming to solve the problem of how to improve the acoustic performance of the speaker.

[0057] See also Figure 1 、 Figure 3 and Figure 10As shown, the utility model proposes a sound unit 100, the aspect ratio of the sound unit 100 is greater than 2:1, the sound unit 100 includes a magnetic circuit system 1 and a vibration system 2, the magnetic circuit system 1 includes a support plate 13 and a central magnetic circuit 11 and a side magnetic circuit 12 arranged on the support plate 13, the central magnetic circuit 11 and the side magnetic circuit 12 are spaced apart and a magnetic gap 14 is formed between them, the central magnetic circuit 11 includes a first magnet 111, a magnetic conductive plate 112 and a second magnet 113 arranged in sequence along a first direction, the second magnet 113 is arranged on the support plate 13, the first magnet 111 and the second magnet 113 are both magnetized along the first direction and in opposite magnetization directions; the vibration system 2 includes a diaphragm 21 and an annular voice coil 22 for driving the diaphragm 21 to vibrate along the first direction, one end of the annular voice coil 22 is connected to the diaphragm 21, and the other end is located in the magnetic gap 14, and the diaphragm 21 has a waterproof and breathable structure.

[0058] The sound-emitting unit 100 of the present invention may be a loudspeaker unit, and the sound-emitting unit 100 may be applied to a sound module of an electronic device, such as a computer, a mobile phone, a smart wearable device, etc. This embodiment is described by taking the sound-emitting unit 100 as a loudspeaker unit as an example.

[0059] The technical solution of the present invention utilizes the relative magnetization of the first magnet 111 and the second magnet 113, and then coordinates with the magnetic conductive plate 112 to correct the magnetic lines of force, focusing them at the position of the magnetic conductive plate 112. This increases the number of magnetic lines of force passing through the annular voice coil 22, thereby enhancing the inductive strength of the voice coil, further increasing the magnetic field driving force, and improving the acoustic performance of the speaker. The diaphragm 21 has a waterproof and breathable structure, which not only facilitates the balance of air pressure inside and outside the speaker 100, but also effectively improves the waterproof performance of the speaker 100. It should be noted that the relative magnetization of the first magnet 111 and the second magnet 113 means that the magnetic poles on the opposing sides of the first magnet 111 and the second magnet 113 are the same. If the first magnet 111 is magnetized downward, the second magnet 113 is magnetized upward. The magnetic conductive plate 112 corrects the magnetic lines of force, causing most of the magnetic lines of force to extend horizontally, thereby increasing the number of magnetic lines of force passing through the annular voice coil 22.

[0060] In this embodiment, the sound unit 100 has a narrow and long shape. It should be noted that the sound unit 100 has a height (thickness) along a first direction, as well as a length and width along a direction perpendicular to the first direction. The length-to-width ratio of the sound unit 100 is greater than 2:1, allowing it to better fit within the reserved space of a microelectronic device.

[0061] See also Figure 2 、 Figure 3 and Figure 8As shown, in one embodiment, the support plate 13 is made of magnetic material, and the side magnetic circuit 12 includes a first side magnet 121, an intermediate side magnet 122 and a second side magnet 123 arranged in sequence along a first direction. The first side magnet 121 is arranged corresponding to the first magnet 111 and has an opposite magnetization direction to the first magnet 111. The second side magnet 123 is arranged corresponding to the second magnet 113 and has an opposite magnetization direction to the second magnet 113. The intermediate side magnet 122 is magnetized along the second direction, the first direction and the second direction are perpendicular, and the polarity of the magnetic pole of the intermediate side magnet 122 facing the magnetic gap 14 is opposite to the polarity of the magnetic pole of the first side magnet 121 and the second side magnet 123 away from the intermediate side magnet 122, so that the side magnetic circuit 12 can form a magnetic field enhancement side facing the magnetic gap 14. By designing the magnetization direction of the magnets in the side magnetic circuit 12, the magnetic field lines of the side magnetic circuit 12 can be focused on the position of the middle side magnet 122, forming a magnetic field enhancement side facing the magnetic gap 14, greatly improving the strength of the magnetic field in the magnetic gap 14, and through the correction effect of the magnetic conductive plate 112, most of the magnetic field lines pass through the annular voice coil 22 horizontally, thereby enhancing the magnetic field driving force and improving the acoustic performance of the speaker. It should be noted that the first direction is Figure 1 The up and down directions shown are Figure 1In the left and right directions shown, taking the downward magnetization of the first magnet 111 as an example, the magnetization directions of the first magnet 111 and the second magnet 113 are opposite, so the second magnet 113 is magnetized upward. Since a magnetic conductive plate 112 is provided between the first magnet 111 and the second magnet 113, the magnetic lines of force from the first magnet 111 and the second magnet 113 are changed to the left and right to pass through the annular voice coil 22 under the correction effect of the magnetic conductive plate 112, thereby increasing the number of magnetic lines of force passing through the annular voice coil 22; since the middle side magnet 122 located on the left side of the magnetic gap 14 is magnetized to the left, and the middle side magnet 122 located on the right side of the magnetic gap 14 is magnetized to the right, combined with the upward magnetization of the first side magnet 121, magnetic lines of force can eventually be formed. closed loop, thereby effectively enhancing the magnetic field strength; and the middle side magnet 122 can cooperate with the second side magnet 123 with the magnetization direction opposite to the second magnet 113 to form a magnetic line closed loop, further enhancing the magnetic field strength; and then cooperate with the magnetic conductive support plate 13 to correct the magnetic line of force, so that more magnetic line of force of the second side magnet 123 can enter the second magnet 113 under the correction of the support plate 13, and finally increase the number of magnetic line of force passing through the annular voice coil 22, thereby enhancing the magnetic field strength; through the design of the magnetization direction, the magnetic line of force is focused on the position of the middle side magnet 122 and the magnetic conductive plate 112, thereby enhancing the induction strength of the annular voice coil 22, thereby improving the magnetic field driving force and improving the acoustic performance of the speaker. The annular voice coil 22 can be elliptical or quadrilateral, and there is no limitation here. The aspect ratio of the annular voice coil 22 is adapted to the aspect ratio of the sound unit 100. The aspect ratio of the annular voice coil 22 refers to the ratio of the length dimension of the annular voice coil 22 along the third direction to the width dimension along the second direction. The first direction, the second direction and the third direction are perpendicular to each other. It should be noted that the third direction is Figure 1 Front-to-back orientation shown.

[0062] It should also be noted that the aspect ratio of the sound unit 100 refers to the ratio of the length dimension of the sound unit 100 in the third direction to the width dimension of the sound unit 100 in the second direction. The aspect ratio of the sound unit 100 is set to be greater than 2:1, so that the overall shape of the entire sound unit 100 is approximately a long strip, thereby meeting some usage scenarios with strict size restrictions in terms of width.

[0063] It is also important to note that when the annular voice coil 22 is energized, it moves back and forth in the magnetic gap 14 to cut the magnetic lines of force, driving the diaphragm 21 to vibrate up and down, thereby instigating the air to make sounds and completing the energy conversion between electricity and sound.

[0064] According to one embodiment of the present invention, the first side magnet 121 can be an integral ring magnet, or a plurality of segmented magnets arranged at intervals, wherein the plurality of segmented magnets surround the periphery of the central magnetic circuit 11 and are arranged at intervals from the central magnetic circuit 11; or it can be composed of two bar magnets, which are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0065] According to another embodiment of the present invention, the middle side magnet 122 can be an integral ring magnet, or a plurality of segmented magnets arranged at intervals, wherein the plurality of segmented magnets surround the periphery of the central magnetic circuit 11 and are arranged at intervals from the central magnetic circuit 11; or it can be composed of two bar magnets, which are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0066] According to another embodiment of the present invention, the second side magnet 123 can be an integral ring magnet, or a plurality of segmented magnets arranged at intervals, wherein the plurality of segmented magnets surround the periphery of the central magnetic circuit 11 and are arranged at intervals from the central magnetic circuit 11; or it can be composed of two bar magnets, which are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0067] According to one embodiment of the present invention, the first magnet 111, the magnetic conductive plate 112, and the second magnet 113 are sequentially connected, and the first side magnet 121, the intermediate side magnet 122, and the second side magnet 123 are sequentially connected, making the entire magnetic circuit system 1 more compact and reducing the space occupied by the magnetic circuit system 1. Furthermore, by arranging the second magnet 113 and the second side magnet 123 on the support plate 13, the connection between the central magnetic circuit 11 and the side magnetic circuit 12 is achieved. Furthermore, by connecting the first side magnet 121 to the housing 5, the magnetic circuit system 1 and the housing 5 can be connected and fixed.

[0068] In one embodiment, the height of the middle side magnet 122 along the first direction is not less than half the height of the annular voice coil 22 along the first direction; this arrangement can effectively widen the magnetic field area in which the annular voice coil 22 is located, and enhance the driving force of the annular voice coil 22, thereby effectively improving the acoustic performance of the sound unit 100 without increasing the volume of the sound unit 100.

[0069] In one embodiment, the height of the middle side magnet 122 along the first direction is not less than the height of the first side magnet 121 along the first direction; through this arrangement, the magnetic lines of force generated by the first side magnet 121 will not be excessively dispersed but will be better focused on the position of the magnetic conductive plate 112, thereby increasing the number of magnetic lines of force passing through the annular voice coil 22, thereby effectively improving the acoustic performance of the sound unit 100 without increasing the volume of the sound unit 100.

[0070] In one embodiment, the height of the middle side magnet 122 along the first direction is not greater than the height of the second side magnet 123 along the first direction; this arrangement can enhance the magnetic field strength of the second side magnet 123 passing through the support plate 13, thereby improving the magnetic induction strength of the annular voice coil 22, thereby effectively improving the acoustic performance of the sound unit 100 without increasing the volume of the sound unit 100.

[0071] In one embodiment, the height of the middle edge magnet 122 along the first direction is greater than the height of the magnetic conductive plate 112 along the first direction. Through this arrangement, the magnetic lines of force can be focused on the magnetic conductive plate 112 and the middle edge magnet 122, thereby improving the magnetic induction intensity of the annular voice coil 22, thereby effectively improving the acoustic performance of the sound unit 100 without increasing the volume of the sound unit 100.

[0072] See also Figure 10 and Figure 11 As shown, in one embodiment, the support plate 13 is made of a magnetically conductive material, and the side magnetic circuit 12 includes a first side magnet 121, a side magnetic conductive plate 125, and a second side magnet 123, which are sequentially arranged along a first direction. The first side magnet 121 is arranged corresponding to the first magnet 111 and has an opposite magnetization direction to the first magnet 111. The second side magnet 123 is arranged corresponding to the second magnet 113 and has an opposite magnetization direction to the second magnet 113. If the first magnet 111 is magnetized upward, the second magnet 113 is magnetized downward. Therefore, the first side magnet 121 is magnetized downward, while the second side magnet 123 is magnetized upward. This arrangement allows the magnetic lines of force corrected by the side magnetic conductive plate 125 to pass through the annular voice coil 22 and then extend to the magnetic conductive plate 112. The design of the magnetic circuit system 1 focuses the magnetic lines of force at the magnetic conductive plate 112 and the side magnetic conductive plate 125, thereby enhancing the induction strength of the annular voice coil 22 and effectively improving the acoustic performance of the speaker 100 without increasing the volume of the speaker 100.

[0073] According to one embodiment of the present invention, the first side magnet 121 can be an integral ring magnet, or a plurality of segmented magnets arranged at intervals, wherein the plurality of segmented magnets surround the periphery of the central magnetic circuit 11 and are arranged at intervals from the central magnetic circuit 11; or it can be composed of two bar magnets, which are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0074] According to another embodiment of the present invention, the side magnetic conductive plate 125 can be an annular magnetic conductive plate, or the side magnetic conductive plate 125 can include multiple magnetic conductive portions arranged at intervals, and the multiple magnetic conductive portions are arranged at intervals along the circumference of the central magnetic circuit 11. The side magnetic conductive plate 125 can also be composed of two strip-shaped magnetic conductive portions, and the two strip-shaped magnetic conductive portions are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0075] According to another embodiment of the present invention, the second side magnet 123 can be an integral ring magnet, or a plurality of segmented magnets arranged at intervals, wherein the plurality of segmented magnets surround the periphery of the central magnetic circuit 11 and are arranged at intervals from the central magnetic circuit 11; or it can be composed of two bar magnets, which are respectively arranged on both sides of the central magnetic circuit 11 along the second direction.

[0076] In one embodiment, the height of the second side magnet 123 along the first direction is no less than the height of the first side magnet 121 along the first direction. This arrangement enhances the magnetic field strength of the second side magnet 123 passing through the support plate 13, thereby increasing the magnetic induction strength of the annular voice coil 22, thereby effectively improving the acoustic performance of the speaker 100 without increasing the volume of the speaker 100.

[0077] See also Figures 1 to 3 As shown, in one embodiment, the sound-emitting unit 100 includes a shell 5, and the magnetic circuit system 1 and the vibration system 2 are both connected to the shell 5. The diaphragm 21 includes a folding ring 211 and a reinforcement portion 212 provided in the central area of ​​the folding ring 211, and the folding ring 211 is connected to the shell 5. The provision of the reinforcement portion 212 allows the sound-emitting unit 100 to have better directivity and transient response in the reproduction of high-frequency signals, and the reinforcement portion 212 can also effectively reduce the split vibration of the diaphragm 21 and reduce the noise of the sound-emitting unit 100. It should be noted that the reinforcement portion 212 can be a polymer material, such as polyphthalamide, polyphthalamide plus 35% glass fiber material, or carbon fiber, metal alloy and other materials.

[0078] See also Figure 4 and Figure 5 As shown, according to one embodiment of the present invention, the folding ring 211 is bent toward one side of the magnetic circuit system 1, so that the folding ring 211 protrudes toward the side where the annular voice coil 22 is located, thereby avoiding the folding ring 211 protruding outside the shell 5 and causing the overall height of the sound unit 100 to be too large.

[0079] In one embodiment, the vibration system 2 further includes a bracket 23 , and the reinforcement portion 212 and the annular voice coil 22 are respectively connected to both ends of the bracket 23 ; the bracket 23 is provided to transmit the driving force of the annular voice coil 22 , thereby driving the diaphragm 21 to vibrate.

[0080] See also Figure 2 and Figure 5As shown, according to one embodiment of the present invention, the bracket 23 includes a connecting portion 231 and two conducting portions 232. The two conducting portions 232 are spaced apart along the second direction at either end of the connecting portion 231. The connecting portion 231 is connected to the diaphragm 21, and the ends of the two conducting portions 232, remote from the connecting portion 231, are respectively connected to two long axis segments of the annular voice coil 22 that are oppositely disposed along the second direction. This reduces the probability of polarization of the annular voice coil 22 and improves the acoustic performance of the sound unit 100. It should be noted that both conducting portions 232 are provided with multiple weight-reducing holes 2321, which are arranged sequentially along the third direction.

[0081] In one embodiment, the reinforcement portion 212 has a support portion that is bent and extended along a first direction, and the support portion is connected to the annular voice coil 22; by providing the support portion to connect the annular voice coil 22, the connection of the original bracket 23 is replaced, the bracket 23 as a structural component is eliminated, the installation process of the bracket 23 is reduced, and the production cost of the sound unit 100 is reduced.

[0082] According to one embodiment of the present invention, the supporting portion includes a first supporting protrusion and a second supporting protrusion, the annular voice coil 22 includes two long axis segments spaced apart along the second direction and two short axis segments spaced apart along the third direction, and the first supporting protrusion and the second supporting protrusion are respectively connected to the two long axis segments of the annular voice coil 22, thereby effectively reducing the probability of polarization occurring in the annular voice coil 22.

[0083] See also Figure 9 As shown, in one embodiment, the reinforcement portion 212 is provided with a reinforcement rib 213, which is located in the center area of ​​the reinforcement portion 212 and extends along the long side direction of the shell 5. By providing the reinforcement rib 213 to strengthen the structure of the reinforcement portion 212, the resonance of the reinforcement portion 212 can be effectively moved to a high frequency. It should be noted that the long side direction is Figure 1 Front-to-back orientation shown.

[0084] See also Figure 5 and Figure 6 As shown, in one embodiment, the reinforcement portion 212 is provided with a plurality of micropores 2121, and the sound unit 100 further includes a waterproof breathable membrane 4 covering the micropores 2121; by providing a plurality of micropores 2121 on the reinforcement portion 212, it is beneficial to balance the air pressure inside and outside the sound unit 100, and by providing a waterproof breathable membrane 4 covering the micropores 2121, while ensuring the balance of the air pressure inside and outside the sound unit 100, the waterproof performance of the sound unit 100 is also effectively improved.

[0085] In one embodiment, at least a portion of the reinforcement portion 212 is constructed from a breathable material, and the acoustic unit 100 further includes a waterproof, breathable membrane 4 attached to the breathable material. This configuration facilitates pressure balance within and outside the acoustic unit 100. By providing the waterproof, breathable membrane 4 covering the breathable material, the waterproof performance of the acoustic unit 100 is effectively enhanced while maintaining pressure balance within and outside the acoustic unit 100. It should be noted that the breathable material can be an organic aerogel or a metal foam.

[0086] See also Figure 1 and Figure 3 As shown, in one embodiment, the housing 5 includes an annular body 51 and a sidewall 52 connected to the annular body 51. The sidewall 52 is provided with a through hole 521, and the side magnetic circuit 12 has a protrusion 124 extending into the through hole 521. By providing the through hole 521 in the sidewall 52, the side magnetic circuit 12 can extend outward to form the protrusion 124, thereby increasing the volume of the side magnetic circuit 12, improving the magnetic field strength, and further enhancing the acoustic performance of the sound unit 100. It should be noted that the through hole 521 passes through the two sidewalls 52 arranged opposite each other along the second direction, and the two outer walls of the side magnetic circuit 12 arranged opposite each other along the second direction both extend outward to form the protrusion 124, and the two protrusions 124 are respectively located within the two through holes 521.

[0087] In one embodiment, the folding ring 211, the reinforcement part 212 and the shell 5 are integrally injection-molded parts; by integrally injection-molding the folding ring 211, the reinforcement part 212 and the shell 5, the number of sealing surfaces is effectively reduced, and the waterproof performance of the sound unit 100 is improved; and by integrally injection-molding the folding ring 211, the reinforcement part 212 and the shell 5, the firmness of the joint surfaces of each component can be improved.

[0088] In one embodiment, the sound-emitting unit 100 further includes a waterproof sealing ring 3, which is disposed around the folding ring 211. The waterproof sealing ring 3, the folding ring 211, the reinforcement portion 212, and the housing 5 are integrally injection-molded. The provision of the waterproof sealing ring 3 improves the waterproof performance of the sound-emitting unit 100, and the integral injection molding of the waterproof sealing ring 3, the folding ring 211, the reinforcement portion 212, and the housing 5 improves the firmness of the joint surfaces of the various components. It should be noted that the height of the diaphragm 21 is lower than the waterproof sealing ring 3, so that a vibration gap 15 exists between the diaphragm 21 and the waterproof sealing ring 3. When the waterproof sealing ring 3 is in sealing contact with the housing 200, the vibration gap 15 provides a larger vibration space for the diaphragm 21, thereby reducing the probability of interference between the diaphragm 21 and the housing 200.

[0089] See also Figure 2 、 Figure 4 and Figure 5As shown, in one embodiment, the sound unit 100 further includes a centering damper 6, which includes a first fixing portion 61, an elastic arm portion 62, and a second fixing portion 63. The first fixing portion 61 is mounted on the housing 5, the second fixing portion 63 is connected to the annular voice coil 22, and the ends of the elastic arm portion 62 are respectively connected to the first fixing portion 61 and the second fixing portion 63. The provision of the centering damper 6 reduces the probability of polarization in the annular voice coil 22 and improves the vibration stability of the annular voice coil 22. In this embodiment, the side magnetic circuit 12 has a damper clearance space to avoid the centering damper 6.

[0090] In one embodiment, two centering supports 6 are provided, one at each end of the longitudinal direction of the housing 5. The two centering supports 6 are connected by a conductive connector 7, which is also provided with an external solder pad 721 for electrical connection to an external circuit. By arranging the conductive connector 7 along the longitudinal direction of the housing 5, the two centering supports 6 are electrically connected, thereby facilitating the introduction of external circuit current into the annular voice coil 22.

[0091] In one embodiment, the conductive connecting portion 7 and the centering support piece 6 are integrally formed. By integrally forming the conductive connecting portion 7 and the centering support piece 6, the number of parts that need to be assembled is reduced, and the assembly steps are omitted, which not only improves the assembly efficiency of the sound unit 100, but also avoids assembly errors.

[0092] In one embodiment, the conductive connection portion 7 includes a main portion 71 that connects the two centering rails 6 and an external connection portion 72 connected to one end of the main portion 71. The external connection portion 72 is provided with an external solder pad 721. The main portion 71 is disposed on the side of the magnetic circuit system 1, and the outer surface of the main portion 71 does not extend beyond the outer surface of the housing 5. The outer surface of the main portion 71 does not extend beyond the outer surface of the housing 5, thereby preventing the protrusion of the main portion 71 and the resulting increase in the overall size of the sound unit 100, as well as the risk of interference between the main portion 71 and other components of the electronic device.

[0093] See also Figure 1 、 Figure 2 and Figure 7 As shown, in one embodiment, the housing 5 includes an annular body 51 and a side wall 52 connected to the annular body 51. The support plate 13 includes a bottom plate 131 and a surrounding plate 132. The central magnetic circuit 11 and the side magnetic circuit 12 are provided on the bottom plate 131. The surrounding plate 132 is connected to the side wall 52. The first fixing portion 61 is sandwiched between the surrounding plate 132 and the side wall 52. The first fixing portion 61 is sandwiched between the surrounding plate 132 and the side wall 52, thereby effectively fixing the first fixing portion 61 and improving the vibration stability of the annular voice coil 22.

[0094] According to another embodiment of the present invention, the shell 5 also includes an insertion portion 53, which is connected to the side wall 52, and the insertion portion 53 extends along the first direction. There are multiple insertion portions 53, and the multiple insertion portions 53 are arranged at intervals along the circumference of the annular body 51. The support plate 13 is provided with avoidance grooves 134 for inserting the insertion portions 53. The avoidance grooves 134 are consistent in number with the insertion portions 53 and are arranged in a one-to-one correspondence. Through the cooperation between the insertion portion 53 and the avoidance grooves 134, the movement of the support plate 13 relative to the shell 5 in a direction perpendicular to the first direction is effectively restricted, thereby improving the connection stability between the shell 5 and the support plate 13.

[0095] According to one embodiment of the present invention, the support plate 13 also includes mounting ears 133, and the mounting ears 133 are each provided with a mounting hole 1331, so as to facilitate the installation of the sound unit 100; wherein, the number of the mounting ears 133 is two, and the two mounting ears 133 are respectively arranged on both sides of the bottom plate 131 along the long side direction of the shell 5, and each mounting ear 133 is provided with a mounting hole 1331, so as to facilitate the precise installation of the sound unit 100.

[0096] See also Figures 1 to 3 As shown, in one embodiment, the sound unit 100 further includes a front cover 8, which is provided on the side of the diaphragm 21 away from the magnetic circuit system 1. The front cover 8 is provided with a mesh 81. The sound unit 100 further includes a dustproof net 9, which covers the mesh 81. By providing the mesh 81 on the front cover 8, the probability of a sharp object piercing the diaphragm 21 and causing the sound unit 100 to fail can be effectively reduced. The dustproof net 9 is provided to cover the mesh 81 in order to prevent external dust from falling onto the diaphragm 21 through the mesh 81 and affecting the acoustic performance of the sound unit 100. It should be noted that there are multiple meshes 81, and the shapes and sizes of the multiple meshes 81 are not exactly the same, and the distribution of the multiple meshes 81 can be adjusted as needed.

[0097] According to an embodiment of the present invention, the mesh 81 is irregular in shape, and the amplitude symmetry of the sound unit 100 can be adjusted by adjusting the shape of the mesh 81 .

[0098] According to another embodiment of the present invention, the mesh 81 includes a first hole and a second hole, and the hole areas of the first hole and the second hole are different, that is, the apertures of the first hole and the second hole are different. Through this setting, the amplitude symmetry of the sound unit 100 can be effectively adjusted.

[0099] According to another embodiment of the present invention, the first hole and the second hole are staggered along the long side or short side of the sound unit 100, or the first holes are scattered between the second holes, or the front cover 8 includes a first area corresponding to the first hole and a second area corresponding to the second hole; by changing the arrangement of the first hole and the second hole, the amplitude symmetry of the sound unit 100 can also be effectively adjusted.

[0100] In one embodiment, the sound unit 100 further includes a waterproof sealing ring 3, which is connected to the side of the housing 5 away from the magnetic circuit system 1. The waterproof sealing ring 3 is arranged around the fold 211 and forms an annular step 31 at the connection with the fold 211. The front cover 8 is arranged on the annular step 31 and is located inside the waterproof sealing ring 3. The formation of the annular step 31 provides reliable support for the front cover 8. The placement of the front cover 8 on the annular step 31 ensures that the front cover 8 does not increase the size of the entire sound unit 100 due to protrusion of the sealing ring. The placement of the front cover 8 on the annular step 31 and inside the waterproof sealing ring 3 effectively reduces the size of the sound unit 100, thereby making the sound unit 100 more adaptable to the needs of confined installation environments.

[0101] See also Figure 12 and Figure 13 As shown, in one embodiment, the housing 5 has a central portion 54 and end portions 55 located at both ends of the central portion 54 along the longitudinal direction of the housing 5. The outer surface of the central portion 54 protrudes toward the side away from the annular voice coil 22. It should be noted that the outer surface of the central portion 54 near the diaphragm protrudes toward the side away from the annular voice coil 22. The protrusion of the central portion 54 toward the side away from the annular voice coil 22 is intended to better adapt to the shape of the housing 200 of the electronic device, allowing the housing 5 to extend along the housing 200 and achieve a sealed abutment between the housing 5 and the housing 200. The outer surface of the central portion 54 protrudes toward the side away from the annular voice coil 22, giving the housing 5 a curved or nearly curved shape to adapt to the shape of the housing 200, thereby improving the utilization of the internal space of the housing 200. In this embodiment, the shape of the diaphragm 21 is similar to that of the housing 5. By adapting the shape of the housing 5 to that of the outer shell 200, a portion of the gap is used as the vibration space of the diaphragm 21. This increases the vibration space of the diaphragm 21 without increasing the installation space of the sound unit 100. It also increases the volume of the acoustic cavity in front of the sound unit 100, thereby effectively improving the acoustic performance of the sound unit 100. It should be noted that the outer surface of the housing 5 can be an entire arc-shaped structure, or the center portion 54 can be a flat surface and the end portions 55 can be flat or curved. Alternatively, the center portion 54 can be a curved surface and the end portions 55 can be a flat or curved surface.

[0102] In one embodiment, the aspect ratio of the sound unit 100 is not greater than 10:1, so as to better adapt to the installation requirements of some existing narrow installation environments.

[0103] See also Figure 13As shown, the present invention also provides an electronic device, comprising a housing 200 and the aforementioned sound unit 100, with the sound unit 100 disposed within the housing 200. The electronic device may be a computer, a mobile phone, a smart wearable device, or the like. Because the electronic device employs all of the technical solutions of all of the aforementioned embodiments, it at least possesses all of the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and no further details will be given here.

[0104] The above are merely exemplary embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: The aspect ratio of the sound-emitting monomer is greater than 2:1, and the sound-emitting monomer includes: A magnetic circuit system comprising a support plate and a central magnetic circuit and a side magnetic circuit disposed on the support plate, wherein the central magnetic circuit and the side magnetic circuit are spaced apart and a magnetic gap is formed therebetween, the central magnetic circuit comprising a first magnet, a magnetic conductive plate, and a second magnet sequentially arranged along a first direction, the second magnet being disposed on the support plate, the first magnet and the second magnet being magnetized along the first direction and in opposite directions; A vibration system includes a diaphragm and an annular voice coil for driving the diaphragm to vibrate along the first direction, one end of the annular voice coil is connected to the diaphragm, and the other end is located in the magnetic gap, and the diaphragm has a waterproof and breathable structure.

2. The sound-emitting unit according to claim 1, characterized in that: The support plate is made of magnetic conductive material, and the side magnetic circuit includes a first side magnet, an intermediate side magnet, and a second side magnet arranged in sequence along the first direction. The first side magnet is arranged corresponding to the first magnet and has a magnetization direction opposite to that of the first magnet. The second side magnet is arranged corresponding to the second magnet and has a magnetization direction opposite to that of the second magnet. The intermediate side magnet is magnetized along the second direction, the first direction and the second direction are perpendicular, and the polarity of the magnetic pole of the intermediate side magnet facing the magnetic gap is opposite to the polarity of the magnetic pole of the first side magnet and the second side magnet away from the intermediate side magnet, so that the side magnetic circuit can form a magnetic field enhancement side facing the magnetic gap.

3. The sound-emitting unit according to claim 2, characterized in that: The height of the middle side magnet along the first direction is not less than half the height of the annular voice coil along the first direction; And / or, the height of the middle side magnet along the first direction is not less than the height of the first side magnet along the first direction; And / or, the height of the middle side magnet along the first direction is not greater than the height of the second side magnet along the first direction; And / or, the height of the middle edge magnet along the first direction is greater than the height of the magnetic conductive plate along the first direction.

4. The sound-emitting unit according to claim 1, wherein: The support plate is made of magnetic conductive material, and the side magnetic circuit includes a first side magnet, a side magnetic conductive plate, and a second side magnet arranged in sequence along the first direction. The first side magnet is arranged corresponding to the first magnet and has an opposite magnetization direction to the first magnet. The second side magnet is arranged corresponding to the second magnet and has an opposite magnetization direction to the second magnet.

5. The sound-emitting unit according to claim 4, characterized in that: A height of the second side magnet along the first direction is not less than a height of the first side magnet along the first direction.

6. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The sound-emitting unit includes a shell, the diaphragm includes a folding ring and a reinforcement portion provided in the central area of ​​the folding ring, and the folding ring is connected to the shell.

7. The sound-emitting unit according to claim 6, characterized in that: The vibration system further includes a bracket, and the reinforcement portion and the annular voice coil are respectively connected to two ends of the bracket; Alternatively, the reinforcement portion includes a support portion that bends and extends along the first direction, and the support portion is connected to the annular voice coil; And / or, the reinforcement portion is provided with a reinforcement rib, and the reinforcement rib is located in a central area of ​​the reinforcement portion and extends along the long side direction of the shell.

8. The sound-emitting unit according to claim 6, characterized in that: The reinforcing portion is provided with a plurality of micropores, and the sound-emitting unit further comprises a waterproof and breathable membrane covering the micropores; Alternatively, at least a portion of the reinforcing portion is made of a breathable material, and the sound-emitting unit further includes a waterproof breathable membrane attached to the breathable material.

9. The sound-emitting unit according to claim 6, characterized in that: The shell includes an annular body and a side wall connected to the annular body. The side wall is provided with a through hole. The side magnetic circuit has a protrusion extending into the through hole.

10. The sound-emitting unit according to claim 6, characterized in that: The folding ring, the reinforcing portion and the shell are integrally formed by injection molding; Alternatively, the sound-emitting unit further includes a waterproof sealing ring, which is arranged around the folding ring. The waterproof sealing ring, the folding ring, the reinforcement part and the shell are an integral injection-molded part.

11. The sound-emitting unit according to claim 6, characterized in that: The sound unit also includes a centering support plate, which includes a first fixing part, an elastic arm part and a second fixing part. The first fixing part is arranged on the shell, the second fixing part is connected to the annular voice coil, and the two ends of the elastic arm part are respectively connected to the first fixing part and the second fixing part.

12. The sound-emitting unit according to claim 11, wherein: The two centering support plates are respectively arranged at the two ends of the long side direction of the shell, and the two centering support plates are connected by a conductive connecting part. The conductive connecting part is also provided with an external soldering pad that can be electrically connected to an external circuit.

13. The sound-emitting unit according to claim 12, wherein: The conductive connecting portion and the centering support piece are integrally formed. And / or, the conductive connecting part includes a main body connecting the two centering support plates and an external connecting part connected to one end of the main body, the external connecting part is provided with the external welding pad, the main body is provided on the side of the magnetic circuit system, and the outer surface of the main body does not exceed the outer surface of the shell.

14. The sound-emitting unit according to claim 11, wherein: The shell includes an annular body and a side wall connected to the annular body, the support plate includes a bottom plate and a surrounding plate, the central magnetic circuit and the side magnetic circuit are arranged on the bottom plate, the surrounding plate is connected to the side wall, and the first fixing part is clamped between the surrounding plate and the side wall.

15. The sound-emitting unit according to claim 6, characterized in that: The sound-emitting unit further includes a front cover, which is arranged on a side of the diaphragm away from the magnetic circuit system. The front cover is provided with mesh holes. The sound-emitting unit further includes a dust-proof net, which covers the mesh holes.

16. The sound-emitting unit according to claim 15, characterized in that: The sound-emitting unit also includes a waterproof sealing ring, which is connected to the side of the shell away from the magnetic circuit system. The waterproof sealing ring is arranged around the folding ring and forms an annular step at the connection with the folding ring. The front cover is arranged on the annular step and is located on the inner side of the waterproof sealing ring.

17. The sound-emitting unit according to claim 6, characterized in that: The housing has a central portion and end portions located at both ends of the central portion along a longitudinal direction of the housing. An outer surface of the central portion protrudes toward a side away from the annular voice coil.

18. The sound-emitting unit according to any one of claims 1 to 5, characterized in that: The aspect ratio of the sound-emitting unit is not greater than 10:

1.

19. An electronic device, characterized in that: The electronic device includes a housing and a sound-emitting unit according to any one of claims 1 to 18, wherein the sound-emitting unit is arranged in the housing.

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