Sound production monomer and sound production module

Abstract

The application discloses a sound production monomer and a sound production module, and relates to the technical field of sound energy conversion. The sound production monomer comprises a magnetic circuit system and a vibration system. The magnetic circuit system is formed with a first magnetic gap and a second magnetic gap which are arranged at intervals along a second direction. The vibration system vibrates along a first direction. The first direction and the second direction are perpendicular to each other. The vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly. The first voice coil is located in the first magnetic gap, and the second voice coil is located in the second magnetic gap. One side of the first voice coil is connected with the diaphragm, and the other side of the first voice coil is connected with the magnetic assembly. One side of the second voice coil is connected with the diaphragm, and the other side of the second voice coil is connected with the magnetic assembly. The current directions of the first voice coil and the second voice coil are the same. The magnetic assembly can provide an acting force opposite to the restoring force direction of the diaphragm for the first voice coil and the second voice coil. The driving force of the first voice coil and the second voice coil on the diaphragm is effectively increased, and the performance of the sound production monomer 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 a sound emitting module. BACKGROUND

[0002] With the development of thinness of intelligent products, the limited internal space poses a great challenge to the acoustic performance of the loudspeaker. If the size of the loudspeaker is thinned, the performance of the loudspeaker will be weakened, because the conventional method to improve the performance of the loudspeaker is to increase the volume of the magnet to obtain better performance. However, the use of a large volume of magnet will cause the size of the loudspeaker to increase, resulting in that the loudspeaker cannot meet the size requirement. If the size of the loudspeaker is reduced, the space inside the loudspeaker will also be reduced, that is, the space for accommodating the magnet may also be reduced. In the case of insufficient space, only a smaller volume of magnet can be used. However, the reduction of the volume of the magnet will cause the performance of the loudspeaker to be unable to meet the requirement of the whole machine. SUMMARY

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

[0004] To achieve the above-mentioned purpose, the sound emitting monomer provided by the present application comprises:

[0005] A magnetic circuit system is formed with a first magnetic gap and a second magnetic gap;

[0006] A vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly. The first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, one side of the first voice coil is connected with the diaphragm, the other side of the first voice coil is connected with the magnetic assembly, one side of the second voice coil is connected with the diaphragm, the other side of the second voice coil is connected with the magnetic assembly, the current directions of the first voice coil and the second voice coil are the same, and the magnetic assembly can provide an acting force opposite to the restoring force direction of the diaphragm for the first voice coil and the second voice coil.

[0007] In an embodiment, the magnetic circuit system comprises a magnetic circuit unit and a magnetic yoke. The magnetic circuit unit is formed with the first magnetic gap and the second magnetic gap. One side of the magnetic circuit unit away from the diaphragm is arranged on the magnetic yoke. The magnetic yoke is provided with a relief hole corresponding to the magnetic assembly.

[0008] In an embodiment, the magnetic assembly comprises a first magnetic part and a second magnetic part. The first magnetic part is connected with the first voice coil, and the second magnetic part is connected with the second voice coil. The relief hole comprises a first relief hole and a second relief hole. The first relief hole relieves the first magnetic part, and the second relief hole relieves the second magnetic part.

[0009] In an embodiment, the magnetic yoke comprises a center magnetic yoke and a side magnetic yoke, the center magnetic yoke is spaced apart from the side magnetic yoke, the first avoiding hole is arranged on the center magnetic yoke and / or between the center magnetic yoke and the side magnetic yoke, and the second avoiding hole is arranged on the center magnetic yoke and / or between the center magnetic yoke and the side magnetic yoke.

[0010] In an embodiment, the first magnetic member is annular, and the first avoiding hole is annular.

[0011] In an embodiment, the second magnetic member is annular, and the second avoiding hole is annular.

[0012] In an embodiment, the number of the first magnetic members is plural, the plural first magnetic members are arranged along the circumference of the first voice coil, the number of the first avoiding holes is consistent with the number of the first magnetic members, and the first avoiding holes are arranged one by one in correspondence with the first magnetic members.

[0013] In an embodiment, the number of the second magnetic members is plural, the plural second magnetic members are arranged along the circumference of the second voice coil, the number of the second avoiding holes is consistent with the number of the second magnetic members, and the second avoiding holes are arranged one by one in correspondence with the second magnetic members.

[0014] In an embodiment, the sound generating unit further comprises a back cover arranged on the side of the magnetic yoke away from the diaphragm, the back cover is convex in the direction away from the diaphragm to form an avoiding groove, and the avoiding groove is arranged in correspondence with the avoiding hole.

[0015] In an embodiment, a leakage hole is arranged on the magnetic yoke, and an isolation mesh hole is arranged on the back cover in correspondence with the leakage hole.

[0016] In an embodiment, the vibration system vibrates along a first direction, the first magnetic gap and the second magnetic gap are arranged along a second direction, the first direction and the second direction are perpendicular to each other, the magnetic circuit unit comprises a center magnetic circuit, an intermediate magnetic circuit arranged on the side of the center magnetic circuit, and a side magnetic circuit arranged on the side of the intermediate magnetic circuit, the intermediate magnetic circuit comprises a first intermediate magnetic circuit and a second intermediate magnetic circuit arranged on the two sides of the center magnetic circuit along the second direction respectively, the magnetization direction of the magnet of the center magnetic circuit is the same as the magnetization direction of the magnet of the side magnetic circuit, the magnetization direction of the magnet of the first intermediate magnetic circuit and the magnetization direction of the magnet of the second intermediate magnetic circuit are opposite to the magnetization direction of the magnet of the center magnetic circuit, the first magnetic gap surrounds the first intermediate magnetic circuit, and the second magnetic gap surrounds the second intermediate magnetic circuit.

[0017] In an embodiment, the center magnetic circuit comprises a center magnet and a center magnetic conductive plate, the first intermediate magnetic circuit comprises a first intermediate magnet and a first intermediate magnetic conductive plate, the second intermediate magnetic circuit comprises a second intermediate magnet and a second intermediate magnetic conductive plate, the edge magnetic circuit comprises an edge magnet and an edge magnetic conductive plate, the center magnet, the first intermediate magnet, the second intermediate magnet and the edge magnet are magnetized along the first direction, the magnetization direction of the center magnet and the edge magnet is the same, the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the center magnet, the center magnetic conductive plate, the first intermediate magnetic conductive plate and the edge magnetic conductive plate enclose the first magnetic gap, and the center magnetic conductive plate, the second intermediate magnetic conductive plate and the edge magnetic conductive plate enclose the second magnetic gap.

[0018] In an embodiment, the sound generating unit further comprises a shell and an elastic support, the vibration system and the magnetic circuit system are connected to two ends of the shell respectively, the outer periphery of the diaphragm is connected to the shell, one end of the elastic support is connected to the shell, and the first voice coil and the second voice coil are connected to the other end of the elastic support.

[0019] In an embodiment, the elastic support comprises a first centering support piece and a second centering support piece, the first centering support piece and the second centering support piece are arranged in a direction perpendicular to the second direction, the first centering support piece comprises a first fixed part, two first elastic arm parts and two first mounting parts, the two first elastic arm parts are arranged at two ends of the first fixed part respectively, the first mounting parts are arranged corresponding to the first elastic arm parts respectively, each of the first mounting parts is connected to the shell, and the first fixed part is connected to the first voice coil and the second voice coil.

[0020] The second centering support piece comprises a second fixed part, two second elastic arm parts and two second mounting parts, the two second elastic arm parts are arranged at two ends of the second fixed part respectively, the two second mounting parts are arranged corresponding to the second elastic arm parts respectively, each of the second mounting parts is connected to the shell, and the second fixed part is connected to the first voice coil and the second voice coil.

[0021] In an embodiment, the first centering support piece and the second centering support piece are provided with pad components, the pad components comprise a first pad, a second pad, a third pad and a fourth pad, the first pad and the third pad are arranged on the first fixed part, the second pad and the fourth pad are arranged on the second fixed part, the first pad and the second pad are electrically connected to the first voice coil, and the third pad and the fourth pad are electrically connected to the second voice coil.

[0022] The application further provides a sound production module, which comprises a shell and the sound production unit.

[0023] The technical scheme of the application drives the diaphragm to vibrate through the first voice coil and the second voice coil, the current directions of the first voice coil and the second voice coil are the same, the driving forces generated by the first voice coil and the second voice coil are also the same, and the first voice coil and the second voice coil drive the diaphragm to vibrate, which has better performance than a single voice coil loudspeaker; in addition, the first voice coil and the second voice coil are arranged on the side, away from the diaphragm, of the magnetic assembly, the magnetic assembly is subjected to the action of a static magnetic force, when the position of the magnetic assembly is a balance position, the resultant force of the static magnetic force acting on the magnetic assembly is zero, at this time, if the first voice coil and the second voice coil vibrate upward from the balance position, the magnetic assembly moves upward together with the first voice coil and the second voice coil, at this time, the direction of the resultant force of the static magnetic force acting on the magnetic assembly is upward, the direction of the resultant force of the static magnetic force acting on the magnetic assembly is consistent with the vibration direction of the first voice coil and the second voice coil, thereby effectively increasing the driving force of the first voice coil and the second voice coil on the diaphragm and improving the performance of the sound production unit; similarly, if the first voice coil and the second voice coil vibrate downward from the balance position, the magnetic assembly moves downward together with the first voice coil and the second voice coil, at this time, the direction of the resultant force of the static magnetic force acting on the magnetic assembly is downward, the direction of the resultant force of the static magnetic force acting on the magnetic assembly is consistent with the vibration direction of the first voice coil and the second voice coil, thereby also effectively increasing the driving force of the first voice coil and the second voice coil on the diaphragm and improving the performance of the sound production unit. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without creative labor.

[0025] Figure 1 A structural schematic diagram of an embodiment of the sound production unit provided by the application;

[0026] Figure 2 A structural schematic diagram of another view of an embodiment of the sound production unit provided by the application;

[0027] Figure 3 A structural schematic diagram of another embodiment of the sound production unit provided by the application;

[0028] Figure 4 An exploded structural schematic diagram of an embodiment of the sound production unit provided by the application;

[0029] Figure 5A cross-sectional structural schematic diagram of an embodiment of the sound-generating unit provided by the present invention;

[0030] Figure 6 A cross-sectional schematic diagram of a portion of the structure of a sound-generating unit according to an embodiment of the present invention;

[0031] Figure 7 A cross-sectional schematic diagram of a portion of the structure of another embodiment of the sound-generating unit provided by the present invention;

[0032] Figure 8 An exploded structural diagram of another embodiment of the sound-generating monomer provided by the present invention;

[0033] Figure 9 A cross-sectional structural schematic diagram of another embodiment of the sound-generating unit provided by the present invention;

[0034] Figure 10 A schematic diagram of the structure of the first voice coil, the second voice coil, and the elastic support member provided by the present invention;

[0035] Figure 11 This is a structural schematic diagram of the first voice coil, the second voice coil, and the elastic support member provided by the present invention from another perspective.

[0036] Explanation of icon numbers:

[0037] 100. Sound-generating unit; 1. Magnetic circuit system; 11. Magnetic circuit unit; 111. Central magnetic circuit; 1111. Central magnet; 1112. Central magnetic guide plate; 112. Intermediate magnetic circuit; 1121. First intermediate magnetic circuit; 11211. First intermediate magnet; 11212. First intermediate magnetic guide plate; 1122. Second intermediate magnetic circuit; 11221. Second intermediate magnet; 11222. Second intermediate magnetic guide plate; 113. Side magnetic circuit; 1131. Side magnet; 1132. Side magnetic guide plate; 12. Magnetic yoke; 121. Central magnetic yoke; 122. Side magnetic yoke; 1221. Leakage hole; 123. Clearance hole; 1231. First clearance hole; 1232. Second clearance hole; 131. First magnetic gap; 132. 2. Magnetic gap; 2. Vibration system; 21. Diaphragm; 211. Reinforcing part; 22. First voice coil; 221. First annular voice coil; 23. Second voice coil; 231. Second annular voice coil; 24. Magnetic component; 241. First magnetic component; 242. Second magnetic component; 3. Rear cover; 31. Clearance groove; 32. Isolation mesh; 4. Housing; 5. Elastic support; 51. First centering support; 511. First fixing part; 512. First spring arm part; 513. First mounting part; 52. Second centering support; 521. Second fixing part; 522. Second spring arm part; 523. Second mounting part; 53. Pad component; 531. First pad; 532. Second pad; 533. Third pad; 534. Fourth pad.

[0038] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described 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 of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0040] 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 positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, 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” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is also not within the protection scope required by the present application.

[0042] With the development of thinness of intelligent products, the limited internal space poses a great challenge to the acoustic performance of the loudspeaker. If the size of the loudspeaker is thinned, the performance of the loudspeaker will be weakened, because the traditional means to improve the performance of the loudspeaker is to increase the volume of the magnet to obtain better performance, but the use of a large volume of magnet will cause the size of the loudspeaker to increase, resulting in that the loudspeaker cannot meet the size requirement. However, if the size of the loudspeaker is reduced, the space inside the loudspeaker will also be reduced, that is, the space for accommodating the magnet may also be reduced. In the case of insufficient space, only a smaller volume of magnet can be used, but the reduction of the volume of the magnet will cause the performance of the loudspeaker to be unable to meet the whole machine requirement.

[0043] Therefore, it is necessary to provide a sound emitting monomer and a sound emitting module, which aims to solve how to enhance the performance of the loudspeaker.

[0044] Please refer to Figures 4 to 7 In an embodiment of the present application, the sound emitting unit 100 comprises a magnetic circuit system 1 and a vibration system 2, the magnetic circuit system 1 is formed with a first magnetic gap 131 and a second magnetic gap 132; the vibration system 2 comprises a diaphragm 21, a first voice coil 22, a second voice coil 23 and a magnetic assembly 24, the first voice coil 22 is located in the first magnetic gap 131, the second voice coil 23 is located in the second magnetic gap 132, one side of the first voice coil 22 is connected with the diaphragm 21, the other side of the first voice coil 22 is connected with the magnetic assembly 24, one side of the second voice coil 23 is connected with the diaphragm 21, the other side of the second voice coil 23 is connected with the magnetic assembly 24, the current directions of the first voice coil 22 and the second voice coil 23 are the same, and the magnetic assembly 24 can provide the first voice coil 22 and the second voice coil 23 with an acting force opposite to the restoring force direction of the diaphragm 21.

[0045] The sound emitting unit 100 of the present application can be a loudspeaker unit, and can be applied in a sound emitting module of an electronic device, which can be a computer, a mobile phone, a smart wearable device, etc. The present embodiment takes the sound emitting unit 100 as a loudspeaker unit as an example for description.

[0046] The technical scheme of the present application drives the diaphragm 21 to vibrate by using the first voice coil 22 and the second voice coil 23, and the current directions of the first voice coil 22 and the second voice coil 23 are the same, so the driving force directions are also the same, and the first voice coil 22 and the second voice coil 23 drive the diaphragm 21 to vibrate, which has better performance than a single voice coil loudspeaker; and the side of the first voice coil 22 and the second voice coil 23 away from the diaphragm 21 is arranged on the magnetic assembly 24, the magnetic assembly 24 is affected by a static magnetic force, when the position of the magnetic assembly 24 is a balance position, the resultant force of the static magnetic force acting on the magnetic assembly 24 is zero, at this time, if the first voice coil 22 and the second voice coil 23 vibrate upward from the balance position, the magnetic assembly 24 moves upward together with the first voice coil 22 and the second voice coil 23, at this time, the direction of the resultant force of the static magnetic force acting on the magnetic assembly 24 is upward, and the direction of the resultant force of the static magnetic force acting on the magnetic assembly 24 is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, thereby effectively increasing the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21, and improving the performance of the sound emitting unit 100; similarly, if the first voice coil 22 and the second voice coil 23 vibrate downward from the balance position, the magnetic assembly 24 moves downward together with the first voice coil 22 and the second voice coil 23, at this time, the direction of the resultant force of the static magnetic force acting on the magnetic assembly 24 is downward, and the direction of the resultant force of the static magnetic force acting on the magnetic assembly 24 is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, which also effectively increases the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21, and improves the performance of the sound emitting unit 100.

[0047] According to an embodiment of the present application, the first magnetic gap 131 and the second magnetic gap 132 are arranged in a nested manner, the first magnetic gap 131 is located inside the second magnetic gap 132, the second magnetic gap 132 is arranged on the periphery of the first magnetic gap 131 and is spaced apart from the first magnetic gap 131, and correspondingly, the second voice coil 23 is arranged on the periphery of the first voice coil 22 and is spaced apart from the first voice coil 22. Through the above arrangement, the structure of the magnetic circuit system 1 is more compact.

[0048] According to another embodiment of the present application, the vibration system 2 vibrates along a first direction, and the first magnetic gap 131 and the second magnetic gap 132 are spaced apart along a second direction, wherein the first direction and the second direction are perpendicular, and correspondingly, the first voice coil 22 and the second voice coil 23 are also spaced apart along the second direction. Wherein, the first direction is the up-down direction as shown in Figure 5 , and the second direction is the left-right direction as shown in Figure 5 .

[0049] It should be noted that when the first voice coil 22 and the second voice coil 23 are energized, the first voice coil 22 and the second voice coil 23 respectively cut the magnetic force lines reciprocatingly in the first magnetic gap 131 and the second magnetic gap 132, drive the diaphragm 21 to vibrate up and down, thereby driving the air to produce sound, and completing the energy conversion between electricity and sound.

[0050] According to an embodiment of the present application, the magnetic assembly 24 includes a first magnetic conducting part, a second magnetic conducting part, and a connecting part, one end of the connecting part is connected to the first magnetic conducting part, the other end of the connecting part is connected to the second magnetic conducting part, the first magnetic conducting part is arranged on the side of the first voice coil 22 away from the diaphragm 21, and the second magnetic conducting part is arranged on the side of the second voice coil 23 away from the diaphragm 21, wherein the connecting part can be a magnetic conducting part or a non-magnetic conducting part; the first magnetic conducting part and the second magnetic conducting part are connected through the connecting part, thereby improving the synchronization of the vibration of the first voice coil 22 and the second voice coil 23. It should be noted that the first magnetic conducting part and the second magnetic conducting part can be made of permanent magnetic material, such as ferrite, noble metal alloy, etc.; the first magnetic conducting part and the second magnetic conducting part can also be made of magnetic material; the first magnetic conducting part and the second magnetic conducting part can also be made of soft magnetic material, such as pure iron, nickel, etc. It should be noted that the magnetic assembly 24 is a ring-shaped magnetic part.

[0051] Please refer to Figure 4 and Figure 5 , according to another embodiment of the present application, the diaphragm 21 is provided with a reinforcing part 211, through the arrangement of the reinforcing part 211, the sound production unit 100 has better directivity and transient response in the playback of high frequency signals.

[0052] According to another embodiment of the present application, the first voice coil 22 comprises at least two first annular voice coils 221 which are nested in sequence and arranged in sequence along the first direction, and the second voice coil 23 comprises at least two second annular voice coils 231 which are nested in sequence and arranged in sequence along the first direction, so as to effectively improve the strength of the reinforcing portion 211 and avoid high-frequency harmonics of the reinforcing portion 211.

[0053] Please refer to Figure 5 and Figure 9 In an embodiment, the magnetic circuit system 1 comprises the magnetic circuit unit 11 and the magnetic yoke 12, the magnetic circuit unit 11 is formed with the first magnetic gap 131 and the second magnetic gap 132, the side of the magnetic circuit unit 11 away from the diaphragm 21 is arranged on the magnetic yoke 12, and the magnetic yoke 12 is provided with the avoiding hole 123 corresponding to the magnetic assembly 24. On the one hand, the avoiding hole 123 is arranged on the magnetic yoke 12 to avoid the magnetic assembly 24, so as to provide sufficient vibration space for the first voice coil 22 and the second voice coil 23, and on the other hand, the size of the avoiding hole 123 can be adjusted to change the size of the static magnetic force suffered by the magnetic assembly 24, so that the size of the static magnetic force suffered by the magnetic assembly 24 can be adjusted.

[0054] In an embodiment, the magnetic assembly 24 comprises the first magnetic piece 241 and the second magnetic piece 242, the first magnetic piece 241 is connected with the first voice coil 22, the second magnetic piece 242 is connected with the second voice coil 23, the avoiding hole 123 comprises the first avoiding hole 1231 and the second avoiding hole 1232, the first avoiding hole 1231 avoids the first magnetic piece 241, and the second avoiding hole 1232 avoids the second magnetic piece 242. The size of the first avoiding hole 1231 can be adjusted to adjust the size of the static magnetic force suffered by the first magnetic piece 241, and the size of the second avoiding hole 1232 can be adjusted to adjust the size of the static magnetic force suffered by the second magnetic piece 242, so as to realize independent adjustment of the static magnetic force of the first magnetic piece 241 and the second magnetic piece 242. It should be noted that the number of the first magnetic piece 241 can be one or multiple, which is not limited herein. For the first magnetic piece 241, the first magnetic piece 241 can be arranged in one-to-one correspondence with the first avoiding hole 1231, or one first avoiding hole 1231 can avoid at least one first magnetic piece 241. Similarly, the number of the second magnetic piece 242 can be one or multiple, which is not limited herein. For the second magnetic piece 242, the second magnetic piece 242 can be arranged in one-to-one correspondence with the second avoiding hole 1232, or one second avoiding hole 1232 can avoid at least one second magnetic piece 242.

[0055] According to an embodiment of the present application, the magnetic conductive yoke comprises a center magnetic conductive yoke 121 and a side magnetic conductive yoke 122, the center magnetic conductive yoke 121 is spaced apart from the side magnetic conductive yoke 122, the first avoiding hole 1231 is arranged on the center magnetic conductive yoke 121 and / or between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, and the second avoiding hole 1232 is arranged on the center magnetic conductive yoke 121 and / or between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122. That is, the first avoiding hole 1231 can be arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, or the first avoiding hole 1231 can be arranged on the center magnetic conductive yoke 121 to avoid the first magnetic member 241 in different positions or different quantities; the second avoiding hole 1232 can be arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, or the second avoiding hole 1232 can be arranged on the center magnetic conductive yoke 121 to avoid the second magnetic member 242 in different positions or different quantities.

[0056] In an embodiment, the magnetic conductive yoke comprises a center magnetic conductive yoke 121 and a side magnetic conductive yoke 122, the center magnetic conductive yoke 121 is spaced apart from the side magnetic conductive yoke 122, the first avoiding hole 1231 and the second avoiding hole 1232 are arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122; the first avoiding hole 1231 and the second avoiding hole 1232 are arranged in the gap between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, so that the gap can not only avoid the first magnetic member 241 but also avoid the second magnetic member 242.

[0057] In an embodiment, the magnetic conductive yoke comprises a center magnetic conductive yoke 121 and a side magnetic conductive yoke 122, the center magnetic conductive yoke 121 is spaced apart from the side magnetic conductive yoke 122, the first avoiding hole 1231 and the second avoiding hole 1232 are arranged on the center magnetic conductive yoke 121, and the first avoiding hole 1231 and the second avoiding hole 1232 are arranged on the center magnetic conductive yoke 121, so that the center magnetic conductive yoke 121 can avoid the first magnetic member 241 and the second magnetic member 242.

[0058] In an embodiment, the magnetic conductive yoke comprises a center magnetic conductive yoke 121 and a side magnetic conductive yoke 122, the center magnetic conductive yoke 121 is spaced apart from the side magnetic conductive yoke 122, the first avoiding hole 1231 and the second avoiding hole 1232 are arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, that is, the first avoiding hole 1231 can be arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, or the first avoiding hole 1231 can be arranged on the center magnetic conductive yoke 121 to avoid the first magnetic member 241 in different positions or different quantities; the second avoiding hole 1232 can be arranged between the center magnetic conductive yoke 121 and the side magnetic conductive yoke 122, or the second avoiding hole 1232 can be arranged on the center magnetic conductive yoke 121 to avoid the second magnetic member 242 in different positions or different quantities.

[0059] According to an embodiment of the present application, the first magnetic member 241 is annular, and the first avoiding hole 1231 is annular. Compared with using a part of the annular magnetic member as the first magnetic member 241, the annular first magnetic member 241 can receive a larger static magnetic force, and the performance of the sound emitting unit 100 can be improved.

[0060] According to another embodiment of the present application, the second magnetic member 242 is annular, and the second avoiding hole 1232 is annular. Compared with using a part of the annular magnetic member as the second magnetic member 242, the annular second magnetic member 242 can receive a larger static magnetic force, and the performance of the sound emitting unit 100 can be improved.

[0061] It should be noted that the magnetic conducting yoke includes a magnetic conducting yoke body, a first magnetic conducting yoke part and a second magnetic conducting yoke part. The magnetic conducting yoke body is provided with a first through hole and a second through hole. The first magnetic conducting yoke part is arranged in the first through hole and is spaced apart from the magnetic conducting yoke body to form the first avoiding hole 1231. The second magnetic conducting yoke part is arranged in the second through hole and is spaced apart from the magnetic conducting yoke body to form the second avoiding hole 1232.

[0062] According to an embodiment of the present application, the number of the first magnetic members 241 is multiple. The multiple first magnetic members 241 are arranged along the circumference of the first voice coil 22. The number of the first avoiding holes 1231 is consistent with the number of the first magnetic members 241, and the first avoiding holes 1231 are arranged one by one in correspondence with the first magnetic members 241. Compared with one first magnetic member 241, the multiple first magnetic members 241 can increase the driving force acting on the diaphragm 21 through the first voice coil 22, and the performance of the sound emitting unit 100 can be improved.

[0063] According to another embodiment of the present application, the number of the second magnetic members 242 is multiple. The multiple second magnetic members 242 are arranged along the circumference of the second voice coil 23. The number of the second avoiding holes 1232 is consistent with the number of the second magnetic members 242, and the second avoiding holes 1232 are arranged one by one in correspondence with the second magnetic members 242. Compared with one second magnetic member 242, the multiple second magnetic members 242 can increase the driving force acting on the diaphragm 21 through the first voice coil 22, and the performance of the sound emitting unit 100 can be improved.

[0064] Please refer to Figure 1 , Figure 3 and Figure 8 In an embodiment, the sound emitting unit 100 further includes a back cover 3. The back cover 3 is arranged on the side of the magnetic conducting yoke away from the diaphragm 21. The back cover 3 is protruded in the direction away from the diaphragm 21 to form an avoiding groove 31. The avoiding groove 31 is arranged in correspondence with the avoiding hole. The magnetic assembly is avoided by arranging the avoiding groove, so that the first voice coil 22 and the second voice coil 23 have sufficient vibration space, and the performance of the sound emitting unit 100 can be improved.

[0065] Please refer to Figure 4 and Figure 8In an embodiment, a leakage hole 1221 is arranged on the side magnetic yoke 122, and an isolation mesh hole 36 corresponding to the leakage hole 1221 is arranged on the back cover 3. By arranging the isolation mesh hole 36 on the back cover 3 to communicate with the leakage hole 1221, the function of balancing the air pressure is achieved.

[0066] According to an embodiment of the present application, the vibration system 2 further comprises a plurality of balance diaphragms 21, the plurality of balance diaphragms 21 are located on the side of the side magnetic yoke 122 away from the diaphragm 21, the plurality of balance diaphragms 21 are divided into a first balance diaphragm 21 group and a second balance diaphragm 21 group, the first balance diaphragm 21 group is arranged corresponding to the first voice coil 22, the first balance diaphragm 21 group comprises a plurality of first balance diaphragms 21, the plurality of first balance diaphragms 21 are arranged in intervals along the circumference of the first voice coil 22, one end of part of the first balance diaphragms 21 is connected with the side magnetic yoke 122, and the other end is connected with the first magnetic member 241 or the first voice coil 22, one end of another part of the first balance diaphragms 21 is connected with the center magnetic yoke 121, and the other end is connected with the third magnetic member 243 or the first voice coil 22, thereby achieving the function of balancing the first voice coil 22; the second balance diaphragm 21 group is arranged corresponding to the second voice coil 23, the second balance diaphragm 21 group comprises a plurality of second balance diaphragms 21, the plurality of second balance diaphragms 21 are arranged in intervals along the circumference of the second voice coil 23, one end of part of the second balance diaphragms 21 is connected with the side magnetic yoke 122, and the other end is connected with the second magnetic member 242 or the second voice coil 23, one end of another part of the second balance diaphragms 21 is connected with the center magnetic yoke 121, and the other end is connected with the fourth magnetic member 244 or the second voice coil 23, thereby achieving the function of balancing the second voice coil 23, the side magnetic yoke 122 is provided with a communication hole for avoiding the balance diaphragm 21, the communication hole is arranged in one-to-one correspondence with the balance diaphragm 21.

[0067] In an embodiment, the vibration system 2 vibrates along a first direction, the first magnetic gap 131 and the second magnetic gap 132 are arranged in intervals along a second direction, the first direction and the second direction are perpendicular to each other, the magnetic circuit unit 11 comprises a center magnetic circuit 111, an intermediate magnetic circuit arranged on the side of the center magnetic circuit 111, and a side magnetic circuit 113 arranged on the side of the intermediate magnetic circuit, the intermediate magnetic circuit comprises a first intermediate magnetic circuit 1121 and a second intermediate magnetic circuit 1122 arranged on the two sides of the center magnetic circuit 111 along the second direction respectively, the magnetization direction of the magnet of the center magnetic circuit 111 is the same as the magnetization direction of the magnet of the side magnetic circuit 113, the magnetization direction of the magnet of the first intermediate magnetic circuit 1121 and the magnetization direction of the magnet of the second intermediate magnetic circuit 1122 are opposite to the magnetization direction of the magnet of the center magnetic circuit 111, the first magnetic gap 131 surrounds the first intermediate magnetic circuit 1121, and the second magnetic gap 132 surrounds the second intermediate magnetic circuit 1122; it is guaranteed that the first voice coil 22 and the second voice coil 23 can vibrate along the same direction under the condition that the current directions are consistent.

[0068] In an embodiment, the center magnetic circuit 111 includes a center magnet 1111 and a center magnetic conducting plate 1112, the first intermediate magnetic circuit 1121 includes a first intermediate magnet 11211 and a first intermediate magnetic conducting plate 11212, the second intermediate magnetic circuit 1122 includes a second intermediate magnet 11221 and a second intermediate magnetic conducting plate 11222, the edge magnetic circuit 113 includes an edge magnet 1131 and an edge magnetic conducting plate 1132, the center magnet 1111, the first intermediate magnet 11211, the second intermediate magnet 11221 and the edge magnet 1131 are magnetized in the first direction, the magnetization directions of the center magnet 1111 and the edge magnet 1131 are the same, the magnetization directions of the first intermediate magnet 11211 and the second intermediate magnet 11221 are opposite to that of the center magnet 1111, the center magnetic conducting plate 1112, the first intermediate magnetic conducting plate 11212 and the edge magnetic conducting plate 1132 enclose the first magnetic gap 131, and the center magnetic conducting plate 1112, the second intermediate magnetic conducting plate 11222 and the edge magnetic conducting plate 1132 enclose the second magnetic gap 132. Among them, the center magnetic conducting plate 1112, the first intermediate magnetic conducting plate 11212 and the second intermediate magnetic conducting plate 11222 are located on the inner side of the edge magnetic conducting plate 1132 and are spaced apart from the edge magnetic conducting plate 1132, and the magnetic conduction is performed through the center magnetic conducting plate 1112, the first intermediate magnetic conducting plate 11212 and the edge magnetic conducting plate 1132 to ensure that the first magnetic gap 131 has sufficient magnetic flux, and the magnetic conduction is performed through the center magnetic conducting plate 1112, the second intermediate magnetic conducting plate 11222 and the edge magnetic conducting plate 1132 to ensure that the second magnetic gap 132 has sufficient magnetic flux.

[0069] It should be noted that the number of edge magnetic conducting plates 1132 can be one or more, which is not limited here. Similarly, the number of first intermediate magnetic conducting plates 11212, second intermediate magnetic conducting plates 11222 and center magnetic conducting plates 1112 can also be one or more. It should also be noted that the edge magnetic conducting plate 1132 is injection molded on the shell 4.

[0070] Please refer to Figure 3 and Figure 4 In an embodiment, the sound emitting unit 100 further includes a shell 4 and an elastic support 5, the vibration system 2 and the magnetic circuit system 1 are connected to two ends of the shell 4 respectively, the outer periphery of the diaphragm 21 is connected with the shell 4, one end of the elastic support 5 is connected with the shell 4, and the first voice coil 22 and the second voice coil 23 are both connected with the other end of the elastic support 5. Among them, the elastic support 5 plays a centering and supporting role for the first voice coil 22 and the second voice coil 23, prevents the first voice coil 22 and the second voice coil 23 from being polarized, and improves the vibration stability of the first voice coil 22 and the second voice coil 23.

[0071] Please refer to Figure 4 , Figure 8 and Figure 10In an embodiment, the first centering limb 51 and the second centering limb 52 are provided with a soldering pad component 53, which includes a first soldering pad 531, a second soldering pad 532, a third soldering pad 533 and a fourth soldering pad 534. The first soldering pad 531 and the third soldering pad 533 are arranged on the first fixed part 511, and the second soldering pad 532 and the fourth soldering pad 534 are arranged on the second fixed part 521. The first soldering pad 531 and the second soldering pad 532 are electrically connected with the first voice coil 22, and the third soldering pad 533 and the fourth soldering pad 534 are electrically connected with the second voice coil 23. Compared with the circuit board connected with the voice coil, the sound emitting unit 100 of the embodiment is provided with the first soldering pad 531 and the third soldering pad 533 on the first centering limb 51, and the second soldering pad 532 and the fourth soldering pad 534 on the second centering limb 52, so that the circuit board is not needed, which helps to reduce the thickness of the sound emitting unit 100.

[0072] According to another embodiment of the present application, the elastic support 5 is provided with a limb magnetic component. The limb magnetic component can be made of permanent magnetic material, such as ferrite, noble metal alloy, etc. The limb magnetic component can also be made of magnetic conductive material. The limb magnetic component can also be made of soft magnetic material, such as pure iron, nickel, etc. The limb magnetic component is subjected to static magnetic force. When the first voice coil 22 and the second voice coil 23 vibrate upward from the balanced position, the resultant direction of the static magnetic force acting on the limb magnetic component is also upward. The force acts on the first voice coil 22 and the second voice coil 23 through the elastic support 5. Since the direction of the static magnetic force acting on the limb magnetic component is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21 is effectively increased, and the sensitivity of the sound emitting unit 100 is effectively improved. Similarly, when the first voice coil 22 and the second voice coil 23 vibrate downward from the balanced position, the resultant direction of the static magnetic force acting on the limb magnetic component is also downward. The force acts on the first voice coil 22 and the second voice coil 23 through the elastic support 5. Since the resultant direction of the static magnetic force acting on the limb magnetic component is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21 is effectively increased, and the sensitivity of the sound emitting unit 100 is effectively improved.

[0073] In an embodiment, the elastic support 5 comprises a first centering branch 51 and a second centering branch 52, the first centering branch 51 and the second centering branch 52 are arranged in a direction perpendicular to the second direction, the first centering branch 51 comprises a first fixed part 511, two first elastic arm parts 512 respectively arranged at two ends of the first fixed part 511, and two first mounting parts 513 corresponding to the first elastic arm parts 512, each first mounting part 513 is connected with the shell 4, and the first fixed part 511 is connected with the first voice coil 22 and the second voice coil 23; the second centering branch 52 comprises a second fixed part 521, two second elastic arm parts 522 respectively arranged at two ends of the second fixed part 521, and two second mounting parts 523 corresponding to the second elastic arm parts 522, each second mounting part 523 is connected with the shell 4, and the second fixed part 521 is connected with the first voice coil 22 and the second voice coil 23. The first centering branch 51 and the second centering branch 52 can jointly center and support the first voice coil 22 and the second voice coil 23, prevent the first voice coil 22 and the second voice coil 23 from being polarized, and improve the vibration stability of the first voice coil 22 and the second voice coil 23. Compared with the centering branch adopting the integral structure, the independent first centering branch 51 and the second centering branch 52 eliminate the connecting structure connecting the first centering branch 51 and the second centering branch 52, and thus the cost is lower.

[0074] According to an embodiment of the present application, the side magnetic circuit 113 comprises a plurality of side magnetic blocks, the plurality of side magnetic blocks are arranged in a circumferential direction of the middle magnetic block, and an avoidance space is formed between any two adjacent side magnetic blocks, wherein any first elastic arm part 512 is provided with an avoidance space, and any second elastic arm part 522 is provided with an avoidance space, so as to prevent the first centering branch 51 and the second centering branch 52 from interfering with the side magnetic block.

[0075] The present application further provides a sound production module, which comprises a shell and a sound production unit 100, the sound production unit 100 is arranged in the shell, and the sound production module can be a loudspeaker module. The sound production module can be applied in electronic devices such as computers, mobile phones and smart wearable devices. Since the sound production module 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.

[0076] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and 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 application relates to a loudspeaker, which comprises: a magnetic circuit system, which is formed with a first magnetic gap and a second magnetic gap; a vibration system, which comprises a vibrating diaphragm, a first voice coil, a second voice coil and a magnetic assembly, the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, one side of the first voice coil is connected with the vibrating diaphragm, the other side of the first voice coil is connected with the magnetic assembly, one side of the second voice coil is connected with the vibrating diaphragm, the other side of the second voice coil is connected with the magnetic assembly, the current directions of the first voice coil and the second voice coil are the same, and the magnetic assembly can provide an action force opposite to the restoring force direction of the vibrating diaphragm for the first voice coil and the second voice coil; the magnetic circuit system comprises a magnetic circuit unit and a magnetic yoke, the magnetic circuit unit is formed with the first magnetic gap and the second magnetic gap, one side of the magnetic circuit unit away from the vibrating diaphragm is arranged on the magnetic yoke, and the magnetic yoke is provided with avoiding holes corresponding to the magnetic assembly; the vibration system vibrates along a first direction, the first magnetic gap and the second magnetic gap are arranged along a second direction, the first direction and the second direction are perpendicular to each other, the magnetic circuit unit comprises a center magnetic circuit, an intermediate magnetic circuit arranged on the circumferential side of the center magnetic circuit and an edge magnetic circuit arranged on the circumferential side of the intermediate magnetic circuit, the intermediate magnetic circuit comprises a first intermediate magnetic circuit and a second intermediate magnetic circuit arranged on the two sides of the center magnetic circuit along the second direction, the magnetization directions of the magnets of the center magnetic circuit and the magnets of the edge magnetic circuit are the same, the magnetization directions of the magnets of the first intermediate magnetic circuit and the magnets of the second intermediate magnetic circuit are opposite to the magnetization direction of the magnets of the center magnetic circuit, the first magnetic gap surrounds the first intermediate magnetic circuit, and the second magnetic gap surrounds the second intermediate magnetic circuit; the center magnetic circuit comprises a center magnet and a center magnetic conducting plate, the first intermediate magnetic circuit comprises a first intermediate magnet and a first intermediate magnetic conducting plate, the second intermediate magnetic circuit comprises a second intermediate magnet and a second intermediate magnetic conducting plate, and the edge magnetic circuit comprises an edge magnet and an edge magnetic conducting plate, the center magnet, the first intermediate magnet, the second intermediate magnet and the edge magnet are magnetized along the first direction, the magnetization directions of the center magnet and the edge magnet are the same, the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the center magnet, and the center magnetic conducting plate, the first intermediate magnetic conducting plate and the edge magnetic conducting plate enclose the first magnetic gap, and the center magnetic conducting plate, the second intermediate magnetic conducting plate and the edge magnetic conducting plate enclose the second magnetic gap.

2. The sound producing monomer of claim 1, wherein, the magnetic assembly comprises a first magnetic component and a second magnetic component, the first magnetic component is connected with the first voice coil, the second magnetic component is connected with the second voice coil, the avoiding holes comprise a first avoiding hole and a second avoiding hole, the first avoiding hole avoids the first magnetic component, and the second avoiding hole avoids the second magnetic component.

3. The sound producing monomer of claim 2, wherein, The magnetic conducting yoke comprises a center magnetic conducting yoke and a side magnetic conducting yoke, the center magnetic conducting yoke is spaced apart from the side magnetic conducting yoke, the first avoiding hole is arranged on the center magnetic conducting yoke and / or between the center magnetic conducting yoke and the side magnetic conducting yoke, and the second avoiding hole is arranged on the center magnetic conducting yoke and / or between the center magnetic conducting yoke and the side magnetic conducting yoke.

4. The sound producing monomer of claim 2, wherein, The first magnetic member is annular, and the first avoiding hole is annular. And / or, the second magnetic member is annular, and the second avoiding hole is annular.

5. The sound producing monomer of claim 2, wherein, The number of the first magnetic members is multiple, the multiple first magnetic members are arranged along the circumference of the first voice coil, the number of the first magnetic members is consistent with the number of the first avoiding holes, and the first avoiding holes are arranged one by one in correspondence with the first magnetic members. And / or, the number of the second magnetic members is multiple, the multiple second magnetic members are arranged along the circumference of the second voice coil, the number of the second magnetic members is consistent with the number of the second avoiding holes, and the second avoiding holes are arranged one by one in correspondence with the second magnetic members.

6. The sound producing monomer of any one of claims 1 to 5, wherein, The sound generating unit further comprises a back cover arranged on the side of the magnetic conducting yoke away from the diaphragm, the back cover is protruded in the direction away from the diaphragm to form an avoiding groove, and the avoiding groove is arranged in correspondence with the avoiding hole. And / or, a leakage hole is arranged on the magnetic conducting yoke, and an isolation mesh hole in correspondence with the leakage hole is arranged on the back cover.

7. The sound producing monomer of any one of claims 1 to 5, wherein, The sound generating unit further comprises a shell and an elastic support, the vibration system and the magnetic circuit system are respectively connected to the two ends of the shell, the outer periphery of the diaphragm is connected with the shell, one end of the elastic support is connected with the shell, and the first voice coil and the second voice coil are both connected with the other end of the elastic support.

8. The sound producing monomer of claim 7, wherein, The elastic support comprises a first centering support piece and a second centering support piece, the first centering support piece and the second centering support piece are arranged in a direction perpendicular to the second direction, the first centering support piece comprises a first fixed part, two first elastic arm parts and two first mounting parts, the two first elastic arm parts are respectively arranged at the two ends of the first fixed part, the first mounting parts are arranged one by one in correspondence with the first elastic arm parts, each first mounting part is connected with the shell, and the first fixed part is connected with the first voice coil and the second voice coil. The second centering support piece comprises a second fixed part, two second elastic arm parts and two second mounting parts, the two second elastic arm parts are respectively arranged at the two ends of the second fixed part, the second mounting parts are arranged one by one in correspondence with the second elastic arm parts, each second mounting part is connected with the shell, and the second fixed part is connected with the first voice coil and the second voice coil.

9. The sound producing monomer of claim 8, wherein, The first centering support piece and the second centering support piece are provided with a soldering pad part, the soldering pad part comprises a first soldering pad, a second soldering pad, a third soldering pad and a fourth soldering pad, the first soldering pad and the third soldering pad are arranged on the first fixed part, the second soldering pad and the fourth soldering pad are arranged on the second fixed part, the first soldering pad and the second soldering pad are both electrically connected with the first voice coil, and the third soldering pad and the fourth soldering pad are both electrically connected with the second voice coil.

10. A sound production module, comprising: The sound production module comprises a shell and the sound production monomer as claimed in any one of claims 1 to 9, and the sound production monomer is arranged in the shell.

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