TWI785603B - Double-sided speaker device - Google Patents

Abstract

A double-sided speaker device is disclosed. The double-sided speaker device comprises a magnetic carrier board, a first magnetic circuit module, a second magnetic circuit module, a first voice coil, a second voice coil, a first voice output cover, and a second voice output cover. The first magnetic circuit module and the second magnetic circuit module are disposed the opposite two side of the magnetic carrier board. A plurality of openings are located between the first magnetic circuit module and the second magnetic circuit module. The first voice coil and the second voice coil are respectively arranged around the first magnetic circuit module and the second magnetic circuit module. The first voice output cover and the second voice output cover are disposed the opposite two side of the magnetic carrier board. The first magnetic circuit module and the first voice coil are located in a first accommodating space of the first voice output cover. The second magnetic circuit module and the second voice coil are located in a second accommodating space of the second voice output cover. The second accommodating space communicates with the first accommodating space though the plurality of openings.

Description

double-sided speaker

The present application relates to the technical field of speaker devices, in particular to a double-sided speaker device.

At present, double-sided speaker devices are usually formed by using two voice coils with a common magnetic circuit module. The interior of the double-sided speaker device is divided into two resonance spaces by the magnetic circuit module. The two voice coils are located in the two resonance spaces. Among them, the two resonance spaces are not connected, resulting in poor sound quality of the double-sided speaker device. If you want to increase the resonance space to improve the sound quality of the double-sided speaker device, the volume of the double-sided speaker device will increase. Suitable for thin electronic devices.

The invention provides a double-sided speaker device, which solves the problem of poor sound quality of the current double-sided speaker device.

In order to solve the problems of the technologies described above, the present invention is achieved in that:

Provided is a double-sided speaker device, which includes: a magnetically conductive carrier plate with a plurality of openings; a first magnetic circuit module set on one side of the magnetically conductive carrier plate; a second magnetic circuit module set on the magnetically conductive carrier On the other side of the board, the second magnetic circuit module is opposite to the first magnetic circuit module, and these openings are located between the first magnetic circuit module and the second magnetic circuit module; the first voice coil surrounds the first magnetic circuit module The second voice coil is set around the second magnetic circuit module, and the second voice coil corresponds to the first voice coil; the first sound output cover is set on one side of the magnetic carrier plate, and the first output The acoustic cover has a first accommodation space, the first magnetic circuit module and the first voice coil are located in the first accommodation space; and the second acoustic cover is arranged on the other side of the magnetic carrier plate, and the second The acoustic enclosure has a second accommodating space, the second magnetic circuit module and the second voice coil are located in the second accommodating space, and the second accommodating space communicates with the first accommodating space through the openings.

The double-sided speaker device of the present invention forms the first speaker part and the magnetic carrier plate, the second voice coil, the first The second magnetic circuit module and the second sound output cover form the second speaker part, and the first voice coil and the second voice coil use the first magnetic circuit module and the second magnetic circuit module independently to achieve double-sided speakers . The first accommodating space and the second accommodating space are respectively two resonant cavities of the double-sided speaker device, and the two resonant cavities communicate through these openings, so that without increasing the volume of the double-sided speaker device, the double-sided The resonant cavity volume of the speaker device can effectively improve the sound quality effect of the double-sided speaker device.

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making progressive efforts belong to the scope of protection of this application.

Please refer to Fig. 1, Fig. 2 and Fig. 3, which are a perspective view and an exploded view of a double-sided speaker device according to an embodiment of the present application; as shown in the figure, the double-sided speaker device 1 of this embodiment includes a magnetically conductive carrier plate 10. The first magnetic circuit module 11, the second magnetic circuit module 12, the first voice coil 13, the second voice coil 14, the first sound-emitting cover 15 and the second sound-emitting cover 16, and the magnetic carrier plate 10 has a plurality of openings 101, and these openings 101 are respectively arranged in the first direction X and the second direction Y, and the first direction X and the second direction Y are orthogonal.

The number of openings 101 in this embodiment is four, two of the four openings 101 are arranged in the first direction X, and the two openings 101 are set on the front side and the rear side of the magnetically permeable carrier plate 10 respectively; the other two openings 101 Arranged in the second direction Y, the other two openings 101 are respectively opened on the left side and the right side of the magnetic permeable carrier 10 . The first magnetic circuit module 11 is arranged on one side of the magnetically conductive carrier 10, and the second magnetic circuit module 12 is arranged on the other side of the magnetically conductive carrier 10. In this embodiment, the first magnetic circuit module 11 And the second magnetic circuit module 12 is arranged on the opposite sides of the magnetically conductive carrier plate 10 in the third direction Z orthogonal to the first direction X and the second direction Y, and the first magnetic circuit module 11 is arranged on the conductive On the upper side of the magnetic carrier board 10 , the second magnetic circuit module 12 is disposed on the lower side of the magnetic carrier board 10 , and the second magnetic circuit module 12 is opposite to the first magnetic circuit module 11 .

As shown in Figure 2 and Figure 3, these openings 101 are located between the first magnetic circuit module 11 and the second magnetic circuit module 12, in this embodiment, four openings 101 are located in the first magnetic circuit module 11 And around the second magnetic circuit module 12. The first voice coil 13 is arranged around the first magnetic circuit module 11 , the second voice coil 14 is arranged around the second magnetic circuit module 12 , and the first voice coil 13 corresponds to the second voice coil 14 . Please refer to Fig. 4 at the same time, the first sound emitting cover body 15 is arranged on one side of the magnetically conductive carrier plate 10, the first sound emitting cover body 15 has a first accommodation space 151, and the first magnetic circuit module 11 And the first voice coil 13 is located in the first accommodating space 151 . The second acoustic cover 16 is arranged on the other side of the magnetically conductive carrier plate 10, the second acoustic cover 16 has a second accommodation space 161, the second magnetic circuit module 12 and the second voice coil 14 are located on the second In the accommodating space 161 , the second accommodating space 161 communicates with the first accommodating space 151 through the openings 101 .

The first acoustic cover 15 of this embodiment includes a first bracket 152 and a first diaphragm 153, the first bracket 152 is arranged on one side of the magnetically conductive carrier 10, and the first diaphragm 153 is arranged on the first bracket 152 away from One side of the magnetically conductive carrier 10 is connected to the first voice coil 13; similarly, the second acoustic cover 16 includes a second bracket 162 and a second diaphragm 163, and the second bracket 162 is arranged on the magnetically conductive carrier 10 On the other side, the second diaphragm 163 is disposed on the side of the second bracket 162 away from the magnetically permeable carrier 10 and connected to the second voice coil 14 .

When the double-sided speaker device 1 of the present embodiment is in the operating state, as shown in Figure 3 and Figure 4, the two ends of the first voice coil 13 and the two ends of the second voice coil 14 are connected to an external power supply, and the external power supply The current flows to the first voice coil 13 and the second voice coil 14, and the first voice coil 13 and the second voice coil 14 generate a magnetic field under the action of the current to change the magnitude of the current passing through the first voice coil 13 and the second voice coil 14 And change the magnitude and direction of the magnetic field generated by the first voice coil 13 and the second voice coil 14 .

The magnetic field generated by the first voice coil 13 interacts with the magnetic field generated by the first magnetic circuit module 11 to cause the first voice coil 13 to vibrate orthogonally to the direction of the current, and the first voice coil 13 drives the first diaphragm 153 to generate Vibration produces sound; similarly, the magnetic field produced by the second voice coil 14 interacts with the magnetic field produced by the second magnetic circuit module 12, causing the second voice coil 14 to produce vibrations perpendicular to the direction of the current, and the second voice coil 14 drives the second diaphragm 163 to vibrate to generate sound. The double-sided speaker device 1 of this embodiment passes through the magnetically conductive carrier plate 10, the first voice coil 13, the first magnetic circuit module 11 and the first sound emitting cover 15. Forming the first speaker part and the magnetically conductive carrier plate 10, the second voice coil 14, the second magnetic circuit module 12 and the second sound output cover 16 form the second speaker part to achieve double-sided speaker.

It should be further explained that, since the same vibration masses of the first voice coil 13 and the second voice coil 14 cancel each other out, the vibration of the double-sided speaker device 1 is reduced, and the vibration of the first diaphragm 153 and the second diaphragm 163 is increased. area, and improve the efficiency of the double-sided speaker device 1 . In addition, the first accommodating space 151 and the second accommodating space 161 of this embodiment are respectively two resonant cavities of the double-sided speaker device 1, and the two resonant cavities are communicated through these openings 101, so that there is no need to increase the double-sided speaker. Under the volume of the sound device 1, increasing the resonant cavity volume of the double-sided speaker device 1 can effectively improve the stereo sound quality effect of the double-sided speaker device 1.

Please continue to refer to FIG. 2 and FIG. 4 , the surface where the first bracket 152 and the first diaphragm 153 are connected in this embodiment also has a first wire slot 1523 , and the first wire slot 1523 is connected to the first accommodation space 151 communication; similarly, the surface where the second bracket 162 is connected to the second diaphragm 163 also has a second wiring groove 1623 , and the second wiring groove 1623 communicates with the second accommodating space 161 . The two ends of the first voice coil 13 pass through the first wire groove 1523 to the outside respectively to connect with the external power supply. Similarly, the two ends of the second voice coil 14 respectively pass through the second wire groove 1623 to the outside to Connect to external power supply.

Please also refer to FIG. 4, which is a cross-sectional view along the AA' line in FIG. 1; The first magnetic body 111 is disposed on one side of the magnetically permeable carrier 10 , and the first magnetically conductive plate 112 is disposed on a side of the first magnetic body 111 away from the magnetically permeable carrier 10 . Similarly, the second magnetic circuit module 12 includes a second magnetic body 121 and a second magnetically conductive plate 122, the second magnetic body 121 is arranged on the other side of the magnetically conductive carrier plate 10, and the second magnetically conductive plate 122 is arranged on the second magnetically conductive plate 122. The two magnetic bodies 121 are away from the side of the magnetically permeable carrier 10 . The magnetic poles of the magnetically permeable carrier plate 10 of this embodiment are different from those of the first magnetic body 111 and the second magnetic body 121, and the magnetic poles of the first magnetically permeable plate 112 and the second magnetically permeable plate 122 are different from those of the first magnetic body 111 and the second magnetic body 121. The magnetic poles of the two magnetic bodies 121 are different, for example, the magnetic poles of the magnetically conductive carrier plate 10, the first magnetically conductive plate 112, and the second magnetically conductive plate 122 are N poles, and the magnetic poles of the first magnetic body 111 and the second magnetic body 121 are S poles. pole.

Referring back to Fig. 2 and Fig. 3 and referring to Fig. 5 simultaneously, Fig. 5 is a sectional view along line B-B' in Fig. 1 . The magnetic carrier plate 10 of the present embodiment has a magnetic conductive plate body 102 and a plurality of positioning cantilevers 103, one end of the positioning cantilever arms 103 is respectively connected to the magnetic conductive plate body 102, and the positioning cantilever arms 103 are arranged at intervals on the magnetic conductive plate body 102 around, the other ends of these positioning cantilevers 103 are respectively connected with the first sound emitting cover body 15 and the second sound emitting cover body 16, and these openings 101 are respectively located between two adjacent positioning cantilever arms 103, in this embodiment In the example, the quantity of positioning cantilever 103 is four, and one end of four positioning cantilever 103 is respectively arranged on the four corners of magnetic permeable plate body 102, and the other end of four positioning cantilever 103 is from four corners of magnetic permeable plate body 102 Extending toward the first sound emitting cover body 15 and the second sound emitting cover body 16, the space between two adjacent positioning cantilever arms 103 is the opening 101 of the magnetically permeable carrier plate 10, in other words, the opening 101 is located in the adjacent between the two positioning cantilevers 103.

The other end of these positioning cantilevers 103 also has positioning portion 1031 respectively, and first support 152 is provided with plural first positioning portions 1521 corresponding to the positioning portion 1031 of these positioning cantilever 103, and the second support 162 is corresponding to the positioning of some positioning cantilever 103. The part 1031 is provided with a plurality of second positioning parts 1621, and the positioning parts 1031 of the positioning cantilever 103 are respectively connected with the first positioning parts 1521 and the second positioning parts 1621, and the first sound emitting cover body 15 is welded by laser welding. , the magnetically conductive carrier plate 10 and the second sound emitting cover 16 are connected as one. The positioning parts 1031 of this embodiment are perforations, the first positioning parts 1521 are respectively positioning slots or positioning posts, and the second positioning parts 1621 are respectively positioning posts or positioning slots, and the positioning posts respectively pass through the perforations and are arranged in the positioning positions. groove.

Please also refer to Figure 6, which is a cross-sectional view along the line CC' in Figure 1; The plates 17 are respectively connected to the opposite sides of the magnetically permeable carrier plate 10. In this embodiment, the two side magnetically permeable plates 17 are respectively arranged on the opposite sides of the magnetically permeable carrier plate 10 in the first direction X, that is, two The two side magnetic permeable plates 17 are respectively disposed on the left side and the right side of the magnetic permeable carrier plate 10 . In this embodiment, the two side magnetic permeable plates 17 are respectively located in the two openings 101 on the left and right sides of the magnetic permeable plate body 102 . The two side magnetic guide plates 17 are respectively located in the corresponding openings 101 and extend toward the first accommodating space 151 and the second accommodating space 161. 103 connections. The first voice coil 13 is located between the two side magnetic conducting plates 17 and the first magnetic circuit module 11 , and the second voice coil 14 is located between the two side magnetic conducting plates 17 and the second magnetic circuit module 12 . The magnetic poles of the two side magnetically conductive plates 17 in this embodiment are the same as those of the magnetically conductive carrier plate 10 .

In this embodiment, as shown in FIG. 3 , FIG. 5 and FIG. 6 , both ends of the two side magnetic conductive plates 17 are respectively connected to the positioning portions 1031 of the two adjacent positioning cantilever arms 103 . The two side magnetic guide plates 17 respectively have a magnetic guide part 171 and two abutment protrusions 172, and the two abutment protrusions 172 are respectively located at both ends of the magnetic guide part 171. The magnetic guide part 171 of this embodiment is opposite to the two An abutting protrusion 172 protrudes toward the first voice coil 13 or the second voice coil 14 . The other ends of these positioning cantilevers 103 also have abutting notches 1032, and the two abutting protrusions 172 of the two side magnetic guide plates 17 are respectively arranged on the abutting notches 1032 of two adjacent positioning cantilevers 103. The two abutting protrusions 172 are respectively disposed in the corresponding abutting notches 1032 to restrict the side magnetically conductive plate 17 from moving toward the magnetically permeable plate body 102 , so as to position the side magnetically conductive plate 17 in the corresponding opening 101 . The opposite sides of the magnetic permeable plate body 102 in this embodiment also have abutment protrusions 1021 respectively, and the abutment protrusions 1021 abut against the corresponding side magnetic permeable plate 17. The left and right sides of the magnetic permeable plate body 102 in this embodiment Each has an abutting convex portion 1021 . The side magnetic permeable plate 17 can be restricted from moving toward the magnetic permeable plate body 102 through the abutting protrusion 1021 , and the magnetic permeable portion 171 of the side magnetic permeable plate 17 can be supported to stabilize the side magnetic permeable plate 17 in the corresponding opening 101 .

The side of the first bracket 152 away from the first diaphragm 153 also has a plurality of first limiting notches 1522 , and the side of the second bracket 162 away from the second diaphragm 163 also has a plurality of corresponding first limiting notches 1522 . The second limiting notch 1622 and the two abutting protrusions 172 of the two side magnetic conductive plates 17 are respectively located in the corresponding first limiting notch 1522 and the second limiting notch 1622 . Through the side walls of the first limiting notch 1522 and the second limiting notch 1622 in the third direction Z, the abutment protrusion 172 is restricted from moving in the third direction Z, thereby preventing the two side magnetic guide plates 17 from moving in the third direction Z. At the same time, the side wall of the first limit notch 1522 and the second limit notch 1622 in the second direction Y and the side wall of the abutment notch 1032 in the second direction Y limit the abutment protrusion 172 in the second direction Y. direction Y, thereby preventing the two side magnetic conductive plates 17 from moving in the second direction Y, so that the two side magnetic conductive plates 17 can be respectively fixed in the corresponding openings 101 .

The double-sided speaker device 1 of the present embodiment also includes a first damper 18a and a second damper 18b, and the two ends of the first damper 18a are connected to the first bracket 152 of the first sound-emitting cover 15, and the first The damper 18a is located between the first magnetic circuit module 11 and the two side magnetic guide plates 17 and is in contact with the first voice coil 13; similarly, the two ends of the second damper 18b are in contact with the sides of the second sound emitting cover 16. The second bracket 162 is connected, and the second damper 18 b is located between the second magnetic circuit module 12 and the two side magnetic conductive plates 17 and is in contact with the second voice coil 14 . In this embodiment, the displacements of the first voice coil 13 and the second voice coil 14 in the first direction X and the second direction Y are respectively limited by the first damper 18a and the second damper 18b to ensure that the first voice coil 13 and the second voice coil The distance between a magnetic circuit module 11 and the side magnetic conducting plate 17 and the distance between the second voice coil 14 and the second magnetic circuit module 12 and the side magnetic conducting plate 17 ensure that the first voice coil 13 and the second The second voice coil 14 vibrates in the third direction Z.

As shown in Fig. 3, the first damper 18a and the second damper 18b of this embodiment respectively have a limiting portion 181, two connecting portions 182 and two elastic buffering portions 183, and the two connecting portions 182 are respectively arranged on the limiting portion. At opposite ends of the position portion 181 , two elastic buffer portions 183 are respectively connected to the corresponding connecting portion 182 and the limiting portion 181 . The two elastic buffer parts 183 in this embodiment respectively have bent elastic pieces 1831, and the bent elastic pieces 1831 also have a plurality of bent sections 1831a. It should be further explained that the first damper 18a and the second damper 18b are sheet-shaped, and the center is hollowed out for connecting the first magnetic circuit module 11 and the second magnetic circuit module 12 respectively. Therefore, when the double-sided speaker device 1 is in operation, the first magnetic circuit module 11 and the second magnetic circuit module 12 can stably reciprocate along the third direction Z.

To sum up, this application provides a double-sided speaker device, which forms the first speaker part and the magnetic carrier through the magnetic carrier, the first voice coil, the first magnetic circuit module and the first sound cover. , the second voice coil, the second magnetic circuit module and the second sound-emitting cover form the second speaker part, and the first voice coil and the second voice coil use the first magnetic circuit module and the second magnetic circuit module independently Group to achieve double-sided speakers. At the same time, the same vibration mass of the first voice coil and the second voice coil can cancel each other, reduce the vibration of the double-sided speaker device, increase the vibration area of the first diaphragm and the second diaphragm, and improve the performance of the double-sided speaker device. In addition, the first accommodating space and the second accommodating space are respectively two resonant cavities of the double-sided speaker device, and the two resonant cavities are communicated through a plurality of openings, thus increasing the The resonant cavity volume of the double-sided speaker device can effectively improve the sound quality of the double-sided speaker device.

1: Double-sided speaker device 10: Magnetic carrier board 101: opening 102: Magnetic plate body 1021: contact convex part 103:Positioning the cantilever 1031: Positioning Department 1032: against the notch 11: The first magnetic circuit module 111: The first magnetic body 112: The first magnetic plate 12: Second magnetic circuit module 121: second magnetic body 122: The second magnetic plate 13: The first voice coil 14:Second voice coil 15: The first sound cover 151: The first storage space 152: The first bracket 1521: The first positioning department 1522: The first limit gap 1523: The first wire slot 153: The first diaphragm 16: The second sound cover 161: Second storage space 162: second bracket 1621: The second positioning department 1622: The second limit gap 1623: The second wiring trough 163: Second diaphragm 17: side magnetic plate 171: Magnetic Department 172: against the convex part 18a: The first damper 18b: Second damper 181: limit part 182: connection part 183: Elastic buffer 1831: Bending Shrapnel 1831a: Bending section X: first direction Y: the second direction Z: third direction

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the schema: Fig. 1 is a perspective view of a double-sided speaker device according to an embodiment of the present application; Fig. 2 is an exploded view of a double-sided speaker device according to an embodiment of the present application; Fig. 3 is another exploded view of a double-sided speaker device according to an embodiment of the present application; Fig. 4 is a sectional view along A-A' line among Fig. 1; Fig. 5 is a sectional view along the line B-B' in Fig. 1; and Fig. 6 is a sectional view along line C-C' in Fig. 1 .

1: Double-sided speaker device

10: Magnetic carrier board

103:Positioning the cantilever

15: The first sound cover

152: The first bracket

1522: The first limit gap

153: The first diaphragm

16: The second sound cover

162: second bracket

1622: The second limit gap

163: Second diaphragm

172: against the convex part

X: first direction

Y: the second direction

Z: third direction

Claims (14)

A double-sided speaker device, comprising: a magnetically conductive carrier plate with a plurality of openings; a first magnetic circuit module set on one side of the magnetically conductive carrier plate; a second magnetic circuit module set on the magnetically conductive carrier plate On the other side of the magnetic carrier board, the second magnetic circuit module is opposite to the first magnetic circuit module, and the openings are located between the first magnetic circuit module and the second magnetic circuit module; a first A voice coil is arranged around the first magnetic circuit module; a second voice coil is arranged around the second magnetic circuit module, and the second voice coil corresponds to the first voice coil; a first sound-emitting cover, Set on one side of the magnetic carrier plate, the first acoustic cover has a first accommodating space, the first magnetic circuit module and the first voice coil are located in the first accommodating space; a first Two sound-emitting covers are arranged on the other side of the magnetic carrier plate. The second sound-emitting cover has a second accommodating space. The second magnetic circuit module and the second voice coil are located in the second In the accommodating space, the second accommodating space communicates with the first accommodating space through the openings; The plates are respectively located in a corresponding opening and extend toward the first accommodating space and the second accommodating space, the first voice coil is located between the two side magnetic conducting plates and the first magnetic circuit module, the second The two voice coils are located between the two side magnetic plates and the second magnetic circuit module. The double-sided speaker device as claimed in claim 1, wherein the first magnetic circuit module includes a first magnetic body and a first magnetic conductive plate, and the first magnetic body is arranged on one of the magnetic conductive carrier plates. side, the first magnetically conductive plate is arranged on the side of the first magnetic body away from the magnetically conductive carrier plate; the second magnetic circuit module includes a second magnetic body and a second magnetically conductive plate, and the second magnetic The body is arranged on the other side of the magnetically permeable carrier plate, and the second magnetically permeable plate is arranged on the second magnetic body away from the side of the magnetically permeable carrier. The double-sided loudspeaker device as described in claim 2, wherein the magnetically permeable carrier plate has a magnetically permeable plate body and a plurality of positioning cantilevers, one end of these positioning cantilever arms is respectively connected to the magnetically permeable plate body, and these positioning cantilever arms The other ends of the positioning cantilevers are respectively connected with the first sound emitting cover and the second sound emitting cover, and the openings are respectively located between the two adjacent positioning cantilevers. . The double-sided speaker device according to claim 3, wherein the two opposite sides of the magnetic permeable plate body further have an abutting protrusion, and the abutting protruding portion abuts against the corresponding one side of the magnetic permeable plate. The double-sided speaker device according to claim 3, wherein the first sound-emitting cover includes a first bracket and a first diaphragm, the first bracket is arranged on one side of the magnetically conductive carrier plate, the The first diaphragm is arranged on the side of the first bracket away from the magnetic carrier plate and is connected to the first voice coil; the second acoustic cover includes a second bracket and a second diaphragm, and the second The bracket is arranged on the other side of the magnetically conductive carrier plate, and the second diaphragm is arranged on the side of the second bracket away from the magnetically conductive carrier plate and connected to the second voice coil. The double-sided speaker device as described in claim 5, wherein, the other ends of the positioning cantilevers also have a positioning part respectively, and the first bracket is provided with a plurality of first positioning parts corresponding to the positioning parts of the positioning cantilevers, The second bracket is provided with a plurality of second positioning parts corresponding to the positioning parts of the positioning arms, and the positioning parts of the positioning arms are respectively connected with the first positioning parts and the second positioning parts. The double-sided speaker device as claimed in Claim 6, wherein the two ends of the magnetically conductive plates on both sides are respectively connected to the positioning portions of the two adjacent positioning cantilever arms. The double-sided speaker device according to claim 6, wherein the positioning part is a perforation, the first positioning parts are respectively a positioning slot or a positioning post, and the second positioning parts are respectively a positioning post or a positioning post. A positioning slot, the positioning posts respectively pass through the through holes and are arranged in the positioning slot. The double-sided speaker device as claimed in claim 6, wherein the two-side magnetically conductive plates respectively have A magnetically conductive part and two abutting convex parts, the two abutting convex parts are respectively located at the two ends of the magnetically conductive part, the other end of the positioning cantilever also has an abutting notch, and the magnetically conductive plates on the two sides The two abutting protrusions are respectively disposed on the abutting notches of the two adjacent positioning cantilevers. The double-sided speaker device according to claim 9, wherein, the side of the first bracket away from the first diaphragm further has a plurality of first limit gaps, and the side of the second bracket away from the second diaphragm There are also a plurality of second limiting notches corresponding to the first limiting notches, and the two abutting protrusions of the two side magnetic guide plates are respectively located in a corresponding first limiting notch and a second limiting notch. The double-sided speaker device as described in claim 6, further comprising a first damper and a second damper, the two ends of the first damper are connected to the first bracket of the first sound-emitting cover Connected, the first damper is located between the first magnetic circuit module and the two side magnetic plates and is in contact with the first voice coil; the two ends of the second damper are connected to the second sound enclosure The second bracket is connected, and the second damper is located between the second magnetic circuit module and the two side magnetic conducting plates and is in contact with the second voice coil. The double-sided speaker device according to claim 11, wherein the first damper and the second damper respectively have a limiting part, two connecting parts and two elastic buffer parts, and the two connecting parts are respectively arranged on the At opposite ends of the limiting portion, the two elastic buffering portions are respectively connected to a corresponding connecting portion and the limiting portion. The double-sided speaker device as claimed in claim 12, wherein each of the two elastic buffers has a bent elastic piece, and the bent elastic piece also has a plurality of bent sections. The double-sided speaker device according to claim 5, wherein, the surface connecting the first bracket and the first diaphragm further has a first wiring groove, and the first wiring groove is connected with the first accommodating space Communication; the surface where the second bracket is connected with the second diaphragm also has a second wire groove, and the second wire groove communicates with the second accommodating space.

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