Sound-producing monomer and electronic device

Abstract

The application discloses a sound production monomer and an electronic device, and relates to the technical field of sound energy conversion, wherein the sound production monomer comprises a shell, a magnetic circuit system and a vibration system, the magnetic circuit system comprises a support plate, a center magnetic circuit and an edge magnetic circuit, the support plate is made of magnetic conductive material, a magnetic gap is formed between the center magnetic circuit and the edge magnetic circuit, the center magnetic circuit comprises a first magnet, a magnetic conductive plate and a second magnet, the edge magnetic circuit comprises a first edge magnet, a middle edge magnet and a second edge magnet which are sequentially arranged along a first direction, and the edge magnetic circuit can form a magnetic field enhancement side towards the magnetic gap; the vibration system comprises a diaphragm and a ring-shaped voice coil for driving the diaphragm to vibrate along the first direction, one end of the ring-shaped voice coil is connected with the diaphragm, and the other end is located in the magnetic gap. The magnetization directions of the magnets in the center magnetic circuit and the edge magnetic circuit are designed so that the magnetic lines can be focused on the position of the magnetic conductive plate, the strength of the magnetic field is greatly improved, the magnetic field enhancement side towards the magnetic gap is formed, and the acoustic performance of the loudspeaker is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound energy conversion, in particular to a sound emitting monomer and electronic equipment. BACKGROUND

[0002] With the development of thinness of smart wearable products, in the case that the installation space of other components is unchanged, the space left for the loudspeaker is gradually reduced, which makes it difficult to improve the acoustic performance of the loudspeaker by increasing the volume, and the limited internal space limits the acoustic performance of the existing loudspeaker, so that the acoustic performance of the loudspeaker is difficult to improve, so as to not meet the use demand of the user. SUMMARY

[0003] The main purpose of the present application is to provide a sound emitting monomer and electronic equipment, which aims to solve how to improve the acoustic performance of the loudspeaker.

[0004] To achieve the above purpose, the sound emitting monomer provided by the present application has an aspect ratio greater than 2:1, and comprises:

[0005] A shell;

[0006] A magnetic circuit system connected to the shell, the magnetic circuit system comprising a support plate and a center magnetic circuit and an edge magnetic circuit arranged on the support plate, the support plate being a magnetic conductive material, the center magnetic circuit and the edge magnetic circuit being spaced apart and forming a magnetic gap therebetween, the center magnetic circuit comprising a first magnet, a magnetic conductive plate and a second magnet arranged in sequence along a first direction, the second magnet being arranged on the support plate, the edge magnetic circuit comprising a first edge magnet, an intermediate edge magnet and a second edge magnet arranged in sequence along the first direction, the first edge magnet being arranged corresponding to the first magnet and having a magnetization direction opposite to that of the first magnet, the second edge magnet being arranged corresponding to the second magnet and having a magnetization direction opposite to that of the second magnet, the intermediate edge magnet being arranged corresponding to the magnetic conductive plate and having a height along the first direction not less than that of the magnetic conductive plate, the intermediate edge magnet being magnetized along a second direction, the first direction and the second direction being perpendicular, and the polarity of the magnetic pole of the intermediate edge magnet facing the magnetic gap being opposite to that of the magnetic poles of the first edge magnet and the second edge magnet away from the intermediate edge magnet, so that the edge magnetic circuit can form a magnetic field enhancement side facing the magnetic gap;

[0007] A vibration system connected to the shell, the vibration system comprising a diaphragm and a ring-shaped voice coil for driving the diaphragm to vibrate along the first direction, the diaphragm comprising a folded ring and a reinforcing portion arranged in a center area of the folded ring, one end of the ring-shaped voice coil being connected to the reinforcing portion, and the other end being located in the magnetic gap.

[0008] In an embodiment, the fold ring, the reinforcing part and the shell are integrally injection molded;

[0009] Alternatively, the sound emitting unit further comprises a waterproof sealing ring, the waterproof sealing ring surrounds the fold ring, and the waterproof sealing ring, the fold ring, the reinforcing part and the shell are integrally injection molded.

[0010] In an embodiment, the vibration system further comprises a support, and the reinforcing part and the annular voice coil are respectively connected to two ends of the support;

[0011] Alternatively, the reinforcing part has a support part extending along the first direction, and the support part is connected to the annular voice coil;

[0012] And / or, the reinforcing part is provided with a reinforcing rib, the reinforcing rib is located in a central region of the reinforcing part and extends along a long side direction of the shell.

[0013] In an embodiment, the reinforcing part is provided with a plurality of micro-holes, and the sound emitting unit further comprises a waterproof and breathable film covering the micro-holes;

[0014] Alternatively, the reinforcing part is at least partially structured of a breathable material, and the sound emitting unit further comprises a waterproof and breathable film attached to the breathable material.

[0015] In an embodiment, the shell comprises 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 protruding part extending into the through hole;

[0016] And / or, the shell has a central part and end parts located at two ends of the central part along a long side direction of the shell, and an outer surface of the central part protrudes away from the annular voice coil.

[0017] In an embodiment, the sound emitting unit further comprises a centering bracket, the centering bracket comprises 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 two ends of the elastic arm part are respectively connected to the first fixing part and the second fixing part.

[0018] In an embodiment, the centering bracket comprises two, the two centering brackets are respectively arranged at two ends of a long side direction of the shell, the two centering brackets are connected through a conductive connection part, and the conductive connection part is further provided with an external pad capable of being electrically connected to an external circuit.

[0019] In an embodiment, the conductive connection part and the centering bracket are integrally formed;

[0020] And / or, the conductive connecting part comprises a main body part connecting two of the centering branches and an outer connecting part connected to one end of the main body part, the outer connecting part is provided with the outer pad, the main body part is arranged on the side of the magnetic circuit system, and the outer surface of the main body part does not exceed the outer surface of the shell.

[0021] In an embodiment, the shell comprises a ring-shaped main body and a side wall connected to the ring-shaped main body, the support plate comprises a bottom plate and a surrounding plate, the center magnetic circuit and the side magnetic circuit are arranged on the bottom plate, the surrounding plate is connected with the side wall, and the first fixing part is clamped between the surrounding plate and the side wall.

[0022] In an embodiment, the sound emitting unit further comprises a front cover arranged on the side of the diaphragm away from the magnetic circuit system, the front cover is provided with a mesh hole, and the sound emitting unit further comprises a dustproof screen covering the mesh hole.

[0023] In an embodiment, the sound emitting unit further comprises a waterproof sealing ring connected to the side of the shell away from the magnetic circuit system, the waterproof sealing ring surrounds the folding ring and forms an annular step at the connection position of the folding ring, and the front cover is arranged on the annular step and located on the inner side of the waterproof sealing ring.

[0024] In an embodiment, the height of the intermediate side magnet along the first direction is not less than half of the height of the ring-shaped voice coil along the first direction.

[0025] And / or, the height of the intermediate side magnet along the first direction is not less than the height of the first side magnet along the first direction.

[0026] And / or, the height of the intermediate side magnet along the first direction is not greater than the height of the second side magnet along the first direction.

[0027] In an embodiment, the length-width ratio of the sound emitting unit is not greater than 10:1.

[0028] The application further provides an electronic device comprising a shell and the sound emitting unit.

[0029] The technical scheme of the application focuses the magnetic force lines on the position where the intermediate side magnet and the magnetic conducting plate are located by designing the magnetizing direction of the magnets in the center magnetic circuit and the side magnetic circuit, and most of the magnetic force lines pass through the ring-shaped voice coil horizontally, which greatly improves the strength of the magnetic field, forms a magnetic field enhancement side towards the magnetic gap, and further improves the magnetic field driving force and the acoustic performance of the loudspeaker. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the drawings shown.

[0031] Figure 1 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0032] Figure 2 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0033] Figure 3 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0034] Figure 4 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0035] Figure 5 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0036] Figure 6 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0037] Figure 7 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0038] Figure 8 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0039] Figure 9 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0040] Figure 10 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0041] Figure 11 Structure diagram of an embodiment of the sound emitting monomer provided by the present application;

[0042] Explanation of the reference signs:

[0043] 100, sound production monomer; 1, magnetic circuit system; 11, center magnetic circuit; 111, first magnet; 112, magnetic conducting plate; 113, second magnet; 12, side magnetic circuit; 121, first side magnet; 122, intermediate side magnet; 123, second side magnet; 124, protruding part; 13, support plate; 131, bottom plate; 132, surrounding plate; 133, mounting lug; 1331, mounting hole; 134, avoiding slot; 14, magnetic gap; 15, vibration gap; 2, vibration system; 21, diaphragm; 211, folded ring; 212, reinforcing part; 2121, micro hole; 213, reinforcing rib; 22, annular voice coil; 23, support; 231, connecting part; 232, conducting part; 2321, weight-reducing hole; 3, waterproof sealing ring; 31, annular step; 4, waterproof air-permeable film; 5, shell; 51, annular main body; 52, side wall; 521, through hole; 53, insertion part; 54, center part; 55, end part; 6, centering support sheet; 61, first fixed part; 62, elastic arm part; 63, second fixed part; 7, conductive connecting part; 71, main body part; 72, outer connecting part; 721, outer connecting pad; 8, front cover; 81, mesh; 9, dustproof mesh;

[0044] 200, outer shell.

[0045] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0047] It should be noted that if the embodiments of the present application 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 condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0048] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0049] With the development of thin smart wear products, in the case of unchanged installation space of other components, the space left for the speaker is gradually decreasing, which makes it difficult to improve the acoustic performance of the speaker by increasing the volume. The limited internal space limits the acoustic performance of the existing speaker, making it difficult to improve the acoustic performance of the speaker, so as to meet the user's use demand.

[0050] In view of this, it is necessary to propose a sound emitting monomer and electronic equipment, aiming at solving how to improve the acoustic performance of the speaker.

[0051] Please refer to Figures 1 to 3 and Figure 8As shown in the embodiment of the present application, the length-width ratio of the sound production unit 100 is greater than 2:1, the sound production unit 100 comprises a shell 5, a magnetic circuit system 1 and a vibration system 2, the magnetic circuit system 1 is connected to the shell 5, the magnetic circuit system 1 comprises a support plate 13 and a center magnetic circuit 11 and a side magnetic circuit 12 arranged on the support plate 13, the support plate 13 is made of magnetic conductive material, the center magnetic circuit 11 is spaced apart from the side magnetic circuit 12 and a magnetic gap 14 is formed therebetween, the center magnetic circuit 11 comprises 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 side magnetic circuit 12 comprises a first side magnet 121, an intermediate side magnet 122 and a second side magnet 123 arranged in sequence along the first direction, the first side magnet 121 is arranged corresponding to the first magnet 111 and the magnetization direction of the first side magnet 121 is opposite to that of the first magnet 111, the second side magnet 123 is arranged corresponding to the second magnet 113 and the magnetization direction of the second side magnet 123 is opposite to that of the second magnet 113, the intermediate side magnet 122 is arranged corresponding to the magnetic conductive plate 112 and the height of the intermediate side magnet 122 along the first direction is not less than that of the magnetic conductive plate 112, the intermediate side magnet 122 is magnetized along a 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 that 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; the vibration system 2 comprises a diaphragm 21 and a ring-shaped voice coil 22 for driving the diaphragm 21 to vibrate along the first direction, one end of the ring-shaped voice coil 22 is connected to the diaphragm 21 and the other end is located in the magnetic gap 14.

[0052] The sound production unit 100 of the present application can be a loudspeaker unit, and the sound production unit 100 can be applied in a sound production module of an electronic device, and the electronic device can be a computer, a mobile phone, a smart wearable device, etc. The present embodiment takes the sound production unit 100 as a loudspeaker unit as an example for description.

[0053] In the present embodiment, the sound production unit 100 has a narrow and long shape. It should be noted that the sound production unit 100 has a height (thickness) along a first direction, and a length and a width along a direction perpendicular to the first direction. The length-width ratio of the sound production unit 100 is greater than 2:1, which can better adapt to the reserved space of a miniature electronic device.

[0054] The technical scheme of the present application designs the magnetization directions of the magnets in the center magnetic circuit 11 and the side magnetic circuit 12, so that the magnetic lines of force can be focused on the positions where the intermediate side magnet 122 and the magnetic conductive plate 112 are located, and most of the magnetic lines of force at the positions horizontally pass through the ring-shaped voice coil 22, which greatly improves the strength of the magnetic field, forms a magnetic field enhancement side facing the magnetic gap 14, and further improves the magnetic field driving force and the acoustic performance of the loudspeaker. It should be noted that the first direction is the up-down direction as shown in the figure, and the second direction is the left-right direction. Figure 1 The technical scheme of the present application designs the magnetization directions of the magnets in the center magnetic circuit 11 and the side magnetic circuit 12, so that the magnetic lines of force can be focused on the positions where the intermediate side magnet 122 and the magnetic conductive plate 112 are located, and most of the magnetic lines of force at the positions horizontally pass through the ring-shaped voice coil 22, which greatly improves the strength of the magnetic field, forms a magnetic field enhancement side facing the magnetic gap 14, and further improves the magnetic field driving force and the acoustic performance of the loudspeaker. It should be noted that the first direction is the up-down direction as shown in the figure, and the second direction is the left-right direction.Figure 1 The left and right directions are shown. For example, the first magnet 111 is magnetized downward, the magnetization directions of the first magnet 111 and the second magnet 113 are opposite, and therefore the second magnet 113 is magnetized upward. Because the magnetic conductive plate 112 is arranged between the first magnet 111 and the second magnet 113, the magnetic force lines generated by the first magnet 111 and the second magnet 113 change direction under the correction of the magnetic conductive plate 112 and pass through the annular voice coil 22 to the left and right, thereby increasing the number of magnetic force lines passing through the annular voice coil 22. Because the intermediate side magnet 122 on the left side of the magnetic gap 14 is magnetized to the left, the intermediate side magnet 122 on the right side of the magnetic gap 14 is magnetized to the right, and the first side magnet 121 is magnetized upward, a magnetic force line closed loop is finally formed, thereby effectively enhancing the magnetic field strength. The intermediate side magnet 122 can cooperate with the second side magnet 123 having a magnetization direction opposite to that of the second magnet 113 to form a magnetic force line closed loop, thereby further enhancing the magnetic field strength. In addition, the support plate 13 capable of conducting magnetism corrects the magnetic force lines, so that more magnetic force lines of the second side magnet 123 can enter the second magnet 113 under the correction of the support plate 13, and finally the number of magnetic force lines passing through the annular voice coil 22 is increased, thereby enhancing the magnetic field strength. Through the design of the magnetization direction, the magnetic force lines are focused on the positions of the intermediate side magnet 122 and the magnetic conductive plate 112, the induction strength of the annular voice coil 22 is enhanced, thereby improving the magnetic field driving force and the acoustic performance of the loudspeaker. The annular voice coil 22 can be an ellipse or a quadrilateral, which is not limited herein. The aspect ratio of the annular voice coil 22 is adapted to the aspect ratio of the sound emitting 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 of the annular voice coil 22 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 The front and back directions are shown.

[0055] It should be further noted that the aspect ratio of the sound emitting unit 100 refers to the ratio of the length dimension of the sound emitting unit 100 along the third direction to the width dimension of the sound emitting unit 100 along the second direction. The aspect ratio of the sound emitting unit 100 is set to be greater than 2:1, so that the overall shape of the entire sound emitting unit 100 is approximately long strip-shaped, thereby meeting some use scenarios with strict size limitations in the width aspect.

[0056] It should be further noted that when the annular voice coil 22 is energized, the annular voice coil 22 performs reciprocating cutting of the magnetic force lines in the magnetic gap 14, drives the diaphragm 21 to vibrate up and down, thereby driving the air to emit sound and completing the energy conversion between electricity and sound.

[0057] According to an embodiment of the present application, the first side magnet 121 can be a whole annular magnet, or a plurality of segmented magnets arranged at intervals, the plurality of segmented magnets being arranged around the periphery of the center magnetic circuit 11 and being arranged at intervals with the center magnetic circuit 11; or the first side magnet 121 can be composed of two bar magnets, the two bar magnets being arranged on the two sides of the center magnetic circuit 11 along the second direction respectively.

[0058] According to another embodiment of the present application, the intermediate side magnet 122 can be a whole annular magnet, or a plurality of segmented magnets arranged at intervals, the plurality of segmented magnets being arranged around the periphery of the center magnetic circuit 11 and being arranged at intervals with the center magnetic circuit 11; or the intermediate side magnet 122 can be composed of two bar magnets, the two bar magnets being arranged on the two sides of the center magnetic circuit 11 along the second direction respectively.

[0059] According to still another embodiment of the present application, the second side magnet 123 can be a whole annular magnet, or a plurality of segmented magnets arranged at intervals, the plurality of segmented magnets being arranged around the periphery of the center magnetic circuit 11 and being arranged at intervals with the center magnetic circuit 11; or the second side magnet 123 can be composed of two bar magnets, the two bar magnets being arranged on the two sides of the center magnetic circuit 11 along the second direction respectively.

[0060] According to an embodiment of the present application, the first magnet 111, the magnetic conductive plate 112 and the second magnet 113 are connected in sequence, and the first side magnet 121, the intermediate side magnet 122 and the second side magnet 123 are connected in sequence, so that the whole magnetic circuit system 1 is more compact and the space occupied by the magnetic circuit system 1 is reduced. Further, the connection of the center magnetic circuit 11 and the side magnetic circuit 12 is realized by arranging the second magnet 113 and the second side magnet 123 on the support plate 13. Further, the connection and fixation of the magnetic circuit system 1 and the shell 5 can be realized by connecting the first side magnet 121 with the shell 5.

[0061] Please refer to Figure 1 and Figure 2As shown in the drawings, in an embodiment, the sound production unit 100 comprises a shell 5, and the magnetic circuit system 1 and the vibration system 2 are connected to the shell 5. The diaphragm 21 comprises a folded ring 211 and a reinforcing portion 212 arranged at the center region of the folded ring 211, and the folded ring 211 is connected to the shell 5. The reinforcing portion 212 is arranged to make the sound production unit 100 have better directivity and transient response in the playback of high-frequency signals, and the reinforcing portion 212 can also effectively reduce the divided vibration of the diaphragm 21 and reduce the noise of the sound production unit 100. It should be noted that the reinforcing portion 212 can be a high polymer material, such as polyphthalamide, polyphthalamide with 35% glass fiber material, or a carbon fiber, a metal alloy, etc. It should also be noted that the height of the diaphragm 21 is lower than the waterproof sealing ring 3, so that the diaphragm 21 has a vibration gap 15 with the waterproof sealing ring 3. When the waterproof sealing ring 3 is sealed and abuts against the shell 200, the vibration gap 15 provides a larger vibration space for the diaphragm 21, reducing the probability of interference between the diaphragm 21 and the shell 200.

[0062] According to an embodiment of the present application, the folded ring 211 is folded towards the side of the magnetic circuit system 1, so that the folded ring 211 protrudes to the side where the annular voice coil 22 is located, thereby avoiding the folded ring 211 protruding out of the shell 5 to make the overall height of the sound production unit 100 too large.

[0063] As shown in the drawings, Figures 3 to 5 In an embodiment, the folded ring 211, the reinforcing portion 212 and the shell 5 are integrally injection molded, so that the number of sealing surfaces is effectively reduced, and the waterproof performance of the sound production unit 100 is improved; and the integrally injection molding of the folded ring 211, the reinforcing portion 212 and the shell 5 can also improve the firmness of the combination surface of each component.

[0064] As shown in the drawings, Figures 3 to 5 In an embodiment, the sound production unit 100 further comprises a waterproof sealing ring 3, the waterproof sealing ring 3 is arranged around the folded ring 211, and the waterproof sealing ring 3, the folded ring 211, the reinforcing portion 212 and the shell 5 are integrally injection molded. The waterproof sealing ring 3 is arranged to improve the waterproof performance of the sound production unit 100, and the integrally injection molding of the waterproof sealing ring 3, the folded ring 211, the reinforcing portion 212 and the shell 5 improves the firmness of the combination surface of each component.

[0065] As shown in the drawings, Figure 2 , Figure 3 and Figure 5 In an embodiment, the vibration system 2 further comprises a support 23, and the reinforcing portion 212 and the annular voice coil 22 are respectively connected to two ends of the support 23; the support 23 is arranged to transmit the driving force of the annular voice coil 22, thereby pushing the diaphragm 21 to vibrate.

[0066] According to an embodiment of the present application, the support 23 comprises a connecting portion 231 and two conducting portions 232, the two conducting portions 232 are arranged at two ends of the connecting portion 231 along the second direction, the other side of the connecting portion 231 is connected with the two conducting portions 232, the two conducting portions 232 are arranged along the second direction, and the two ends of the two conducting portions 232 away from the connecting portion 231 are respectively connected with the two long axis segments of the annular voice coil 22 arranged opposite along the second direction, so as to reduce the probability of the polarization phenomenon of the annular voice coil 22 and improve the acoustic performance of the sound emitting unit 100. It should be noted that the two conducting portions 232 are provided with a plurality of lightening holes 2321 arranged along the third direction.

[0067] In an embodiment, the reinforcing portion 212 has a supporting portion bent and extending along the first direction, and the supporting portion is connected with the annular voice coil 22. The annular voice coil 22 is connected by the supporting portion, so as to replace the connection of the original support 23, save the structural member of the support 23, reduce the mounting process of the support 23, and reduce the production cost of the sound emitting unit 100.

[0068] According to an embodiment of the present application, the supporting portion comprises a first supporting protrusion and a second supporting protrusion, the annular voice coil 22 comprises two long axis segments arranged along the second direction and two short axis segments arranged along the third direction, and the first supporting protrusion and the second supporting protrusion are respectively connected with the two long axis segments of the annular voice coil 22, so as to effectively reduce the probability of the polarization phenomenon of the annular voice coil 22.

[0069] Please refer to Figure 9 In an embodiment, the reinforcing portion 212 is provided with a reinforcing rib 213 located in the central region of the reinforcing portion 212 and extending along the long edge direction of the shell 5. The reinforcing rib 213 is arranged to strengthen the structure of the reinforcing portion 212, so as to effectively move the resonance of the reinforcing portion 212 to high frequency. It should be noted that the reinforcing rib 213 is directly bonded with the annular voice coil 22. It should be noted that the long edge direction is the front-back direction Figure 1 as shown in the drawings.

[0070] Please refer to Figure 5 and Figure 6 In an embodiment, the reinforcing portion 212 is provided with a plurality of micro-holes 2121, and the sound emitting unit 100 further comprises a waterproof and breathable film 4 covering the micro-holes 2121. The plurality of micro-holes 2121 are arranged on the reinforcing portion 212, so as to facilitate the balance of the air pressure inside and outside the sound emitting unit 100. The waterproof and breathable film 4 covering the micro-holes 2121 is arranged, so as to improve the waterproof performance of the sound emitting unit 100 under the condition of ensuring the balance of the air pressure inside and outside the sound emitting unit 100.

[0071] In an embodiment, the reinforcing portion 212 is at least partially formed of a breathable material, and the sound emitting unit 100 further comprises a waterproof and breathable film 4 attached to the breathable material. By setting at least part of the reinforcing portion 212 as a breathable material, the balance of the air pressure inside and outside the sound emitting unit 100 is facilitated. By setting the waterproof and breathable film 4 covering the breathable material, the waterproof performance of the sound emitting unit 100 is effectively improved while ensuring the balance of the air pressure inside and outside the sound emitting unit 100. It should be noted that the breathable material can be organic aerogel or foamed metal.

[0072] Referring to FIG. 1, Figures 1 to 3 In an embodiment, the shell 5 comprises a ring-shaped main body 51 and a side wall 52 connected to the ring-shaped main body 51, and the side wall 52 is provided with a through hole 521, and the edge magnetic circuit 12 has a protruding portion 124 extending into the through hole 521. By providing the through hole 521 in the side wall 52, the edge magnetic circuit 12 can extend outward to form the protruding portion 124, thereby increasing the volume of the edge magnetic circuit 12 and improving the magnetic field strength, and further improving the acoustic performance of the sound emitting unit 100. It should be noted that the through hole 521 penetrates two side walls 52 oppositely arranged along the second direction, and the edge magnetic circuit 12 extends outward to form the protruding portion 124 along the second direction. The two side walls 52 are oppositely arranged, and the two protruding portions 124 are respectively located in the two through holes 521.

[0073] According to another embodiment of the present application, the shell 5 further comprises an insertion portion 53, the insertion portion 53 is connected to the side wall 52, the insertion portion 53 extends along the first direction, the number of the insertion portion 53 is multiple, and the multiple insertion portions 53 are arranged at intervals along the circumference of the ring-shaped main body 51. The support plate 13 is provided with a avoiding slot 134 for the insertion of the insertion portion 53, and the avoiding slot 134 is arranged in one-to-one correspondence with the number of the insertion portion 53. By matching the insertion portion 53 with the avoiding slot 134, the movement of the support plate 13 relative to the shell 5 along a direction perpendicular to the first direction is effectively limited, and the connection stability of the shell 5 and the support plate 13 is improved.

[0074] Referring to FIG. 1, Figures 1 to 3 In an embodiment, the sound emitting unit 100 further comprises a centering support sheet 6, the centering support sheet 6 comprises a first fixing portion 61, a elastic arm portion 62 and a second fixing portion 63, the first fixing portion 61 is arranged on the shell 5, the second fixing portion 63 is connected to the ring-shaped voice coil 22, and the two ends of the elastic arm portion 62 are respectively connected to the first fixing portion 61 and the second fixing portion 63. By setting the centering support sheet 6, the probability of polarization of the ring-shaped voice coil 22 is reduced, and the vibration stability of the ring-shaped voice coil 22 is improved. In this embodiment, the edge magnetic circuit 12 has a sheet avoiding space for avoiding the centering support sheet 6.

[0075] In an embodiment, two centering vanes 6 are respectively arranged at two ends of the long side direction of the shell 5, the two centering vanes 6 are connected through the conductive connecting part 7, and the conductive connecting part 7 is further provided with an external pad 721 capable of being electrically connected with an external circuit. By arranging the conductive connecting part 7 along the long side direction of the shell 5, the two centering vanes 6 can be electrically connected, so as to facilitate the introduction of the current of the external circuit into the ring-shaped voice coil 22.

[0076] In an embodiment, the conductive connecting part 7 and the centering vane 6 are integrally formed; the conductive connecting part 7 and the centering vane 6 are integrally formed, thereby reducing the number of parts to be assembled, omitting the assembly step, improving the assembly efficiency of the sound production unit 100, and avoiding assembly errors.

[0077] In an embodiment, the conductive connecting part 7 includes a main body part 71 connecting the two centering vanes 6 and an external connecting part 72 connected to one end of the main body part 71, the external connecting part 72 is provided with an external pad 721, and the main body part 71 is arranged on the side surface of the magnetic circuit system 1, and the outer surface of the main body part 71 does not exceed the outer surface of the shell 5. The outer surface of the main body part 71 does not exceed the outer surface of the shell 5, thereby avoiding the phenomenon that the main body part 71 protrudes and increases the overall size of the sound production unit 100, and the risk of interference between the main body part 71 and other parts of the electronic device.

[0078] Please refer to Figures 1 to 3 In an embodiment, the shell 5 includes a ring-shaped main body 51 and a side wall 52 connected to the ring-shaped main body 51, the support plate 13 includes a bottom plate 131 and a surrounding plate 132, the center magnetic circuit 11 and the side magnetic circuit 12 are arranged on the bottom plate 131, the surrounding plate 132 is connected with the side wall 52, and the first fixing part 61 is clamped between the surrounding plate 132 and the side wall 52. The first fixing part 61 is clamped between the surrounding plate 132 and the side wall 52, thereby effectively fixing the first fixing part 61, and further improving the stability of the vibration of the ring-shaped voice coil 22.

[0079] Please refer to Figure 2 and Figure 7 According to an embodiment of the present application, the support plate 13 further includes mounting ears 133, and the mounting ears 133 are each provided with a mounting hole 1331, thereby facilitating the mounting of the sound production unit 100; wherein the number of the mounting ears 133 is two, and the two mounting ears 133 are respectively arranged on two 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, thereby facilitating the accurate mounting of the sound production unit 100.

[0080] Please refer to Figures 1 to 3As shown, in an embodiment, the sound emitting unit 100 further comprises a front cover 8, which is arranged on the side of the diaphragm 21 away from the magnetic circuit system 1, and a plurality of mesh holes 81 are formed in the front cover 8. The sound emitting unit 100 further comprises a dust screen 9, which covers the mesh holes 81. By arranging the mesh holes 81 on the front cover 8, the probability of the diaphragm 21 being punctured by a sharp object and causing the sound emitting unit 100 to fail can be effectively reduced. By arranging the dust screen 9 to cover the mesh holes 81, the external dust can be prevented from falling on the diaphragm 21 through the mesh holes 81 and affecting the acoustic performance of the sound emitting unit 100. It should be noted that the number of the mesh holes 81 is multiple, the shapes and sizes of the plurality of mesh holes 81 are not completely the same, and the distribution of the plurality of mesh holes 81 can be adjusted as needed.

[0081] According to an embodiment of the present application, the shape of the mesh hole 81 is irregular, and by adjusting the shape of the mesh hole 81, the amplitude symmetry of the sound emitting unit 100 can be adjusted.

[0082] According to another embodiment of the present application, the mesh hole 81 comprises a first hole and a second hole, and the hole areas of the first hole and the second hole are different, that is, the hole diameters of the first hole and the second hole are different. By this arrangement, the amplitude symmetry of the sound emitting unit 100 can be effectively adjusted.

[0083] According to still another embodiment of the present application, the first hole and the second hole are staggered along the long side or the short side of the sound emitting unit 100, or the first hole is arranged between the second holes, or the front cover 8 comprises a first area corresponding to the first hole and a second area corresponding to the second hole. By changing the arrangement mode of the first hole and the second hole, the amplitude symmetry of the sound emitting unit 100 can also be effectively adjusted.

[0084] In an embodiment, the sound emitting unit 100 further comprises a waterproof sealing ring 3, which is connected to the side of the shell 5 away from the magnetic circuit system 1, and surrounds the folding ring 211 and forms an annular step 31 at the connection position of the waterproof sealing ring 3 and the folding ring 211. The front cover 8 is arranged on the annular step 31 and located inside the waterproof sealing ring 3. By forming the annular step 31, the front cover 8 is reliably supported, and by arranging the front cover 8 on the annular step 31 and inside the waterproof sealing ring 3, the size of the sound emitting unit 100 is effectively reduced, so that the sound emitting unit 100 can better adapt to the needs of narrow installation environment.

[0085] Please refer to Figure 10 and Figure 11In an embodiment, the shell 5 has a center portion 54 and end portions 55 located at both ends of the center portion 54 along the long direction of the shell 5, and the outer surface of the center portion 54 is convex to the side away from the annular voice coil 22. It should be noted that the outer surface of the center portion 54 close to the diaphragm is convex to the side away from the annular voice coil 22, and the center portion 54 is convex to the side away from the annular voice coil 22 to better adapt to the shape of the outer shell 200 of the electronic device, so that the shell 5 can extend along the outer shell 200 to achieve the sealed abutment of the shell 5 and the outer shell 200; the outer surface of the center portion 54 is convex to the side away from the annular voice coil 22, so that the shell 5 is in a curved shape or an approximately curved shape to adapt to the shape of the outer shell 200, thereby improving the utilization rate of the internal space of the outer shell 200. In this embodiment, the shape of the diaphragm 21 is similar to the shape of the shell 5, and the shape of the shell 5 is adapted to the shape of the outer shell 200 to use part of the gap as the vibration space of the diaphragm 21, thereby increasing the vibration space of the diaphragm 21 without increasing the installation space of the sound emitting unit 100, and also increasing the volume of the front sound cavity of the sound emitting unit 100, thereby effectively improving the acoustic performance of the sound emitting unit 100. It should be noted that the outer surface of the shell 5 can be an arc structure as a whole, or the center portion 54 can be a planar portion, and the end portions 55 can be planar portions or curved portions, or the center portion 54 can be a curved portion, and the end portions 55 can be planar portions or curved portions.

[0086] Please refer to Figure 3 and Figure 8 In an embodiment, the height of the middle side magnet 122 along the first direction is not less than half of the height of the annular voice coil 22 along the first direction; through this setting, the magnetic field region where the annular voice coil 22 is located can be effectively widened, and the driving force of the annular voice coil 22 is enhanced, thereby effectively improving the acoustic performance of the sound emitting unit 100 without increasing the volume of the sound emitting unit 100.

[0087] In an 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 setting, the magnetic lines generated by the first side magnet 121 can not be excessively dispersed but better focused at the position of the magnetic conductive plate 112, and the number of magnetic lines passing through the annular voice coil 22 is increased, thereby effectively improving the acoustic performance of the sound emitting unit 100 without increasing the volume of the sound emitting unit 100.

[0088] In an 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; through this setting, the magnetic field strength of the second side magnet 123 passing through the support plate 13 can be enhanced, and the magnetic induction strength of the annular voice coil 22 is improved, thereby effectively improving the acoustic performance of the sound emitting unit 100 without increasing the volume of the sound emitting unit 100.

[0089] In an embodiment, the sound-emitting monomer 100 has an aspect ratio of no more than 10:1, so as to better adapt to the installation requirements of some narrow installation environments.

[0090] Please refer to Figure 11 The present application also provides an electronic device, which comprises a shell 200 and the sound-emitting monomer 100 described above, and the sound-emitting monomer 100 is arranged in the shell 200. The electronic device can be a computer, a mobile phone, a smart wearable device, etc. Since the electronic device adopts all the technical solutions of 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.

[0091] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A sound producing monomer, characterized in that, The sound production monomer has an aspect ratio greater than 2:1, and the sound production monomer comprises: a shell; a magnetic circuit system connected to the shell, the magnetic circuit system comprising a support plate and a center magnetic circuit and a side magnetic circuit arranged on the support plate, the support plate being a magnetic conductive material, the center magnetic circuit being spaced apart from the side magnetic circuit and forming a magnetic gap therebetween, the center magnetic circuit comprising a first magnet, a magnetic conductive plate and a second magnet arranged in sequence along a first direction, the second magnet being arranged on the support plate, the side magnetic circuit comprising a first side magnet, an intermediate side magnet and a second side magnet arranged in sequence along the first direction, the first side magnet being arranged corresponding to the first magnet and having a magnetization direction opposite to that of the first magnet, the second side magnet being arranged corresponding to the second magnet and having a magnetization direction opposite to that of the second magnet, the intermediate side magnet being arranged corresponding to the magnetic conductive plate and having a height along the first direction not less than that of the magnetic conductive plate, the intermediate side magnet being magnetized along a second direction, the first direction and the second direction being perpendicular, and the polarity of the magnetic pole of the intermediate side magnet facing the magnetic gap being opposite to that of the magnetic poles 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; a vibration system connected to the shell, the vibration system comprising a diaphragm and a ring-shaped voice coil for driving the diaphragm to vibrate along the first direction, the diaphragm comprising a folded ring and a reinforcing portion arranged on a center area of the folded ring, one end of the ring-shaped voice coil being connected to the reinforcing portion and the other end being located in the magnetic gap; the shell comprising a ring-shaped main body and a side wall connected to the ring-shaped main body, the side wall being provided with a through hole, and the side magnetic circuit having a protruding portion extending into the through hole.

2. The sound producing monomer of claim 1, wherein, the folded ring, the reinforcing portion and the shell being an integrally injection molded part; alternatively, the sound production monomer further comprises a waterproof sealing ring, the waterproof sealing ring being arranged around the folded ring, the waterproof sealing ring, the folded ring, the reinforcing portion and the shell being an integrally injection molded part.

3. The sound producing monomer of claim 1, wherein, the vibration system further comprising a support, the reinforcing portion and the ring-shaped voice coil being connected to two ends of the support, respectively; alternatively, the reinforcing portion has a support portion extending along the first direction, the support portion being connected to the ring-shaped voice coil.

4. The sound producing monomer of claim 1, wherein, the reinforcing portion being provided with a reinforcing rib, the reinforcing rib being located in a center area of the reinforcing portion and extending along a long side direction of the shell.

5. The sound producing monomer of claim 1, wherein, the reinforcing portion being provided with a plurality of micro-holes, the sound production monomer further comprising a waterproof and breathable membrane covering the micro-holes; alternatively, the reinforcing portion being at least partially of a breathable material, the sound production monomer further comprising a waterproof and breathable membrane attached to the breathable material.

6. The sound producing monomer of claim 1, wherein, the shell having a center portion and end portions located at two ends of the center portion along a long side direction of the shell, an outer surface of the center portion being convex to a side away from the ring-shaped voice coil.

7. The sound producing monomer of claim 1, wherein, The sound production unit further comprises a centering bracket, which comprises 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 with the ring-shaped voice coil, and two ends of the elastic arm part are respectively connected with the first fixing part and the second fixing part.

8. The sound producing monomer of claim 7, wherein, The centering bracket comprises two, the two centering brackets are arranged at two ends of the long side direction of the shell respectively, and the two centering brackets are connected through a conductive connecting part, and an external connecting pad capable of being electrically connected with an external circuit is further arranged on the conductive connecting part.

9. The sound producing monomer of claim 8, wherein, The conductive connecting part and the centering bracket are integrally formed; And / or, the conductive connecting part comprises a main body part connecting the two centering brackets and an external connecting part connected with one end of the main body part, the external connecting part is provided with the external connecting pad, the main body part is arranged on the side surface of the magnetic circuit system, and the outer surface of the main body part does not exceed the outer surface of the shell.

10. The sound producing monomer of claim 7, wherein, The shell comprises a ring-shaped main body and a side wall connected with the ring-shaped main body, the support plate comprises a bottom plate and a surrounding plate, the center magnetic circuit and the side magnetic circuit are arranged on the bottom plate, the surrounding plate is connected with the side wall, and the first fixing part is clamped between the surrounding plate and the side wall.

11. The sound producing monomer of claim 2, wherein, The sound production unit further comprises a front cover, the front cover is arranged on the side of the diaphragm away from the magnetic circuit system, a mesh hole is arranged on the front cover, and the sound production unit further comprises a dustproof screen, the dustproof screen covers the mesh hole.

12. The sound producing monomer of claim 11, wherein, The sound production unit further comprises a waterproof sealing ring, the waterproof sealing ring is connected with the side of the shell away from the magnetic circuit system, the waterproof sealing ring surrounds the folding ring and forms an annular step at the connection position of the folding ring, and the front cover is arranged on the annular step and located on the inner side of the waterproof sealing ring.

13. The sound producing monomer of any one of claims 1 to 12, wherein, The height of the intermediate side magnet along the first direction is not less than half of the height of the ring-shaped voice coil along the first direction; And / or, the height of the intermediate 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 intermediate side magnet along the first direction is not greater than the height of the second side magnet along the first direction.

14. The sound producing monomer of any one of claims 1 to 12, wherein, The length-width ratio of the sound production unit is not greater than 10:

1.

15. An electronic device, comprising: The electronic device comprises a shell and the sound production unit as claimed in any one of claims 1 to 14, and the sound production unit is arranged in the shell.

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