CN117336651A - Speaker, speaker module and electronic equipment - Google Patents

Abstract

The application provides a loudspeaker, a loudspeaker module and electronic equipment. The speaker includes a support, a first vibration assembly, a second vibration assembly, and a magnetic circuit assembly. The first vibration component, the second vibration component and the magnetic circuit component are coaxially arranged on the supporting piece, and the magnetic circuit component is arranged between the first vibration component and the second vibration component, so that the first vibration component and the second vibration component can share the magnetic circuit component, the axial size of the loudspeaker is reduced, and the loudspeaker is miniaturized. The first vibration assembly comprises a first vibration plate, the second vibration assembly comprises a second vibration plate, the first vibration plate and the second vibration plate are oppositely arranged, and an acoustic cavity is formed between the first vibration plate and the second vibration plate. When vibrating, the first vibrating plate and the second vibrating plate can vibrate in opposite directions or in opposite directions so as to offset the reaction force generated by vibration, and stronger convection air can be generated so as to take away the heat of the vibrating assembly and the magnetic circuit assembly, thereby improving the heat dissipation performance of the loudspeaker.

Description

Speakers, speaker modules and electronic equipment

Technical field

The present application relates to the technical field of electronic equipment, and in particular, to a speaker, a speaker module and an electronic device.

Background technique

A speaker is an electroacoustic transducer that converts electrical energy into sound energy and radiates it in the air to a distance. Moving coil speakers generally include a support system, a magnetic circuit system and a vibration system. Specifically, the support system mainly includes a basin frame. The magnetic circuit system includes magnets, soft magnetic material pole pieces and yokes. The vibration system includes a vibrating plate, voice coil and elastic wave. When the speaker is working, the magnetic circuit system generates a magnetic field to exert force on the energized voice coil, thereby driving the voice coil to vibrate. The vibration of the voice coil can drive the vibration plate to vibrate, pushing the air at the front end of the vibration plate to vibrate, thereby producing sound. Among them, the vibration state of the diaphragm will directly affect the acoustic performance of the speaker such as the sound size, bandwidth range, and distortion performance.

With the trend of miniaturization and lightweight of electronic equipment, the size requirements for speakers are becoming more and more stringent. In practice, however, the sensitivity of a speaker is closely related to its size. Figure 1 is a schematic diagram of the speaker. As shown in Figure 1, when the speaker 01 is working, the vibration of the diaphragm 02 can push the air to vibrate, thereby forming sound waves. The sound pressure P of the sound wave is proportional to the area S of the speaker 01 and the vibration displacement d. Therefore, the reduction in the size of the speaker 01 will lead to a reduction in vibration displacement, so that the low-frequency sensitivity of the speaker will also be reduced.

Contents of the invention

This application provides a speaker, a speaker module and electronic equipment to achieve miniaturization of the speaker module while ensuring the low-frequency sensitivity of the speaker.

In a first aspect, the present application provides a speaker. The speaker includes a support member, a first vibration component, a second vibration component and a magnetic circuit component. Specifically, the first vibration component, the second vibration component and the magnetic circuit component are coaxially arranged on the support member. The first vibration component includes a first vibration plate, and the second vibration component includes a second vibration plate. The first vibration plate and the second vibration plate are arranged oppositely, and a sound cavity may be formed between the first vibration plate and the second vibration plate. The magnetic circuit component is disposed between the first vibration component and the second vibration component, so that the first vibration component and the second vibration component can share the magnetic circuit component.

In the above loudspeaker of the present application, the first vibration component and the second vibration component are coaxially arranged, and can share the magnetic circuit component and the sound cavity. On the one hand, the first vibration component and the second vibration component can vibrate in the axial direction, and on the other hand, the first vibration component and the second vibration component can vibrate in the axial direction. On the one hand, the size of the speaker along the axial direction can be reduced, which is beneficial to the miniaturization of the speaker. Moreover, the first vibration plate and the second vibration plate are coaxially and oppositely arranged. The first vibration plate and the second vibration plate can vibrate coaxially toward each other or in opposite directions, thereby increasing the vibration control force and offsetting the reaction force caused by the vibration. , so that the vibrations of the first vibrating component and the second vibrating component are not transmitted to the outside, thereby avoiding resonance and improving the acoustic performance of the speaker. In addition, the first vibration plate and the second vibration plate can also generate strong convection air when they vibrate, which can take away the heat generated by the first vibration component, the second vibration component and the magnetic circuit component, thereby improving the heat dissipation performance of the speaker. .

When arranging the above magnetic circuit assembly, the magnetic circuit assembly may include a fixed bracket, a magnet conductor and a magnet assembly, wherein the fixed bracket is connected to the support member, and the magnet conductor is connected to the fixed bracket. Specifically, the magnetic conductor can be a cylindrical magnetic conductor, which is coaxially arranged with the first vibration component and directly connected to the fixed bracket. The magnet assembly is arranged in the cylindrical magnet body. The magnet assembly may specifically include a first magnetically conductive piece, a first magnet, a second magnetically conductive piece, a second magnet and a third magnetically conductive piece that are stacked sequentially along the axial direction of the cylindrical magnetically conductive body. The first magnetically conductive piece is arranged close to the first vibration component, and the third magnetically conductive piece is arranged close to the second vibration component. In the magnetic circuit assembly designed with this structure, the cylindrical magnet conductor can shield the magnetic field to prevent magnetic leakage of the magnet assembly. The magnetizing direction of the first magnet is the same as the magnetizing direction of the second magnet. The first magnetic conductive piece, the second magnetic conductive piece and the third magnetic conductive piece direct the magnetic lines of force emitted by the first magnet and the second magnet according to the set direction. conduction, forming a circular magnetic field loop. When the speaker is powered on, the first vibration component and the second vibration component cause the first vibration plate and the second vibration plate to vibrate under the action of the magnetic circuit component, thereby converting electrical energy into sound energy. The magnetic circuit component has a relatively simple structure and can be designed into a smaller size, which is beneficial to the miniaturization of the speaker.

In one technical solution, there is a first gap between the above-mentioned cylindrical magnetic conductor and the first magnetic conductive sheet, and there is a second gap between the cylindrical magnetic conductor and the second magnetic conductive sheet. The first vibration component also includes a first voice coil. The first voice coil can be inserted into the cylindrical magnet conductor through the first gap to be positioned in the magnetic field loop. The second vibration component further includes a second voice coil, and the second voice coil can be inserted into the cylindrical magnet conductor through the second gap to be positioned in the magnetic field loop. In this way, the energized first voice coil can reciprocate under the action of the magnetic field loop, thereby driving the first diaphragm to vibrate; the energized second voice coil can reciprocate under the action of the magnetic field loop, thereby driving the second vibrating plate. The diaphragm vibrates. Since the first voice coil and the second voice coil move in the axial direction when they vibrate after being powered on, in order to prevent the first voice coil and the second voice coil from colliding when they move toward each other, the diameter of the first voice coil and the diameter of the second voice coil are Diameters may not be equal. That is, the cross-sectional area of the first voice coil perpendicular to the axial direction may be larger or smaller than the cross-sectional area of the second voice coil perpendicular to the axial direction.

In order to improve the structural strength of the magnetic circuit assembly, the magnetic circuit assembly may further include a first support piece. In a specific technical solution, the first support piece can be disposed between the cylindrical magnet conductor and the magnet assembly, and the cylindrical magnet conductor and the third magnetic conductor piece are respectively connected to the first support piece, so that through the first support piece Fix the magnet assembly in the cylindrical magnet body. In another specific technical solution, the magnetic conductor may include a first cylinder and a second cylinder arranged coaxially, and the first cylinder is arranged close to the first vibration component. The first support piece may be located between the first cylinder and the second cylinder, and between the second magnetic conductive sheet and the second magnet. Therefore, the first support piece can connect the fixed bracket, the cylindrical magnet conductor, the second magnetic conductor piece and the second magnet, thereby fixing the cylindrical magnet conductor and the magnet assembly to the fixed bracket through the first support piece.

In some other technical solutions, the magnetic circuit assembly may include a fixed bracket, a magnet conductor and a magnet assembly, wherein the fixed bracket is connected to the support member, the magnet conductor is connected to the fixed bracket, and the magnet assembly is connected to the magnet conductor. Specifically, the magnetic conductive body may include a first magnetic conductive column and a second magnetic conductive column coaxially disposed with the first vibration component, wherein the first magnetic conductive column is disposed close to the first vibration component, and the second magnetic conductive column is disposed close to the second Vibration component settings. The magnet assembly includes a fourth magnetically conductive piece, a third magnet, a fourth magnet and a fifth magnetically conductive piece that are stacked in sequence along the axial direction. The fourth magnetically conductive piece and the third magnet are arranged on the peripheral side of the first magnetically conductive column, and the fourth magnetically conductive piece is arranged close to the first vibration component. The fourth magnet and the fifth magnetically conductive piece are arranged on the peripheral side of the second magnetically conductive column, and the fifth magnetically conductive piece is arranged close to the second vibration component. In the magnetic circuit assembly designed with this structure, the magnetization direction of the third magnet is the same as the magnetization direction of the fourth magnet. The fourth magnetic conductive piece, the first magnetic conductive column, the fifth magnetic conductive piece and the second magnetic conductive piece can The column can conduct the magnetic field lines emitted by the third magnet and the fourth magnet in a set direction to form a circular magnetic field loop. When the speaker is powered on, the first vibration component and the second vibration component cause the first vibration plate and the second vibration plate to vibrate under the action of the magnetic circuit component, thereby converting electrical energy into sound energy. The magnetic circuit component has a relatively simple structure and can reduce the size of the speaker along the axial direction.

In a technical solution, there is a third gap between the first magnetically conductive column and the fourth magnetically conductive piece, and there is a fourth gap between the second magnetically conductive column and the fifth magnetically conductive piece. The first vibration component also includes a third voice coil, which is inserted between the first magnetic pole and the third magnet through the third gap to be positioned in the magnetic field loop. The second vibration component also includes a fourth voice coil, which is inserted between the second magnetic pole and the fourth magnet through the fourth gap to be positioned in the magnetic field loop. In this way, the energized third voice coil can reciprocate under the action of the magnetic field loop, thereby driving the first diaphragm to vibrate; the energized fourth voice coil can reciprocate under the action of the magnetic field loop, thereby driving the second vibrating plate. The diaphragm vibrates. In order to prevent the third voice coil and the fourth voice coil from colliding when they move toward each other, the diameters of the third voice coil and the diameter of the fourth voice coil may not be equal to each other. That is, the cross-sectional area of the third voice coil perpendicular to the axial direction may be larger or smaller than the cross-sectional area of the fourth voice coil perpendicular to the axial direction.

In order to improve the structural strength of the magnetic circuit assembly, the magnetic circuit assembly may further include a second supporting piece. Specifically, the first magnetically conductive column, the fourth magnetically conductive piece and the third magnetically conductive piece are arranged on the side of the second support piece close to the first vibration component, and the second magnetically conductive column, the fourth magnetically conductive piece and the fifth magnetically conductive piece are arranged on The second support piece is close to the side of the second vibration component. In this technical solution, the fixed bracket, the third magnet, the fourth magnet, the first magnetic conductive column and the second magnetic conductive column can be connected to the second support piece respectively, so that the third magnet, the fourth magnet and the second magnetic conductive column are connected to each other through the second support piece. The magnet, the first magnetic conductive column and the second magnetic conductive column are fixed on the fixed bracket.

In this application, the above-mentioned speaker may further include at least one sound guide component. The sound guide component includes an installation part and a sound guide part. The mounting part is used to connect with the shell of the speaker module. The sound guide part is connected to the installation part, and the sound guide part is arranged around the sound cavity. The sound guide part is provided with a sound guide channel, and the sound guide channel connects the sound cavity with the outside. In this technical solution, the mounting portion can be directly connected to the housing of the speaker module, thereby simplifying the assembly and disassembly of the speaker module.

In some technical solutions, the above-mentioned at least one sound guide component may include a first sound guide component and a second sound guide component, and the sound guide part of the first sound guide component and the sound guide part of the second sound guide component are arranged opposite to each other in the sound cavity. both sides. The speaker uses two sound guide channels, which can increase the sound output area of the speaker, thereby reducing wind noise and vibration balance.

In the above technical solution, the mounting part may also form an integrated structure with the sound guide part. That is to say, the sound guide component can have an integrated structure, which can improve the structural strength of the sound guide component and simplify the manufacturing process of the speaker.

The first vibration component may further include a first voice coil bracket, and the voice coil of the first vibration component may be disposed on the outer edge of the first voice coil bracket. The second vibration component may further include a second voice coil bracket, and the voice coil of the second vibration component may be disposed on the outer edge of the second voice coil bracket. Wherein, the first voice coil bracket and the second voice coil bracket are coaxially arranged. Since the diameter of the first voice coil is not equal to the diameter of the second voice coil, the first voice coil bracket may also be configured such that its diameter is not equal to the diameter of the second voice coil bracket. That is, the cross-section of the first voice coil bracket may be larger or smaller than the cross-section of the second voice coil bracket.

In a specific application, since the dimensions of the first voice coil bracket and the second voice coil bracket may be different, the overall size of the first vibration component and the overall size of the second vibration component may also be different. Of course, the overall dimensions of the first vibration component and the second vibration component can also be the same, which can make the overall appearance of the speaker simple and facilitate installation and disassembly.

In a second aspect, this application provides a speaker module. The speaker module includes a casing and the speaker of the first aspect, wherein the speaker is disposed in the casing. In this speaker module, the first vibration component and the second vibration component are coaxially arranged and can share a magnetic circuit component. On the one hand, the first vibration component and the second vibration component can vibrate in the axial direction; on the other hand, they can Reducing the size of the speaker along the axial direction is conducive to the miniaturization of the speaker module. Moreover, the first diaphragm and the second diaphragm are coaxially and oppositely arranged. When vibrating, they can vibrate coaxially toward each other or in opposite directions, thereby increasing the vibration damping force and offsetting the reaction force caused by the vibration, which is beneficial to improving the speaker mode. The acoustic performance of the group. In addition, the first vibration plate and the second vibration plate can also generate strong convection air when they vibrate, which can take away the heat generated by the first vibration component, the second vibration component and the magnetic circuit component, thereby improving the performance of the speaker module. Thermal performance.

When the speaker includes at least one sound guide component, the housing may have mounting holes arranged in one-to-one correspondence with the sound guide component. The sound guide component is installed in the mounting hole, thereby connecting the sound cavity and the mounting hole, and guiding sound waves from the sound cavity to the outside. Moreover, the sound guide component can be directly installed with the casing, thereby simplifying the assembly and disassembly of the speaker module.

In a third aspect, the present application provides an electronic device. The electronic device includes a main body and the speaker module of the second aspect, wherein the speaker module is disposed on the main body. The electronic device can be a car speaker, a television, a smart terminal or a smart speaker, etc. This application does not limit the specific application scenarios of the speaker module. The electronic device uses the speaker module of the second aspect, which can be miniaturized without affecting the low-frequency sensitivity.

Description of drawings

Figure 1 is a schematic diagram of the speaker;

Figure 2 is a schematic structural diagram of a speaker in an embodiment of the present application;

Figure 3 is a schematic cross-sectional view of the speaker in Figure 2;

Figure 4 is a schematic structural diagram of the magnetic circuit assembly in the embodiment of the present application;

Figure 5 is another structural schematic diagram of the magnetic circuit assembly in the embodiment of the present application;

Figure 6 is another structural schematic diagram of the magnetic circuit assembly in the embodiment of the present application;

Figure 7 is another structural schematic diagram of a speaker in an embodiment of the present application;

Figure 8 is a schematic structural diagram of a speaker module in an embodiment of the present application;

Figure 9 is another structural schematic diagram of a speaker module in an embodiment of the present application.

Reference signs:

01-speaker; 02-vibration plate;

10-speaker; 11-first vibration component;

12-Second vibration component; 13-Support member;

14-Magnetic circuit components; 15-Acoustic cavity;

16-sound guide component; 16a-first sound guide component;

16b-Second sound guide component; 17-Rear cavity;

80-speaker module; 81-casing;

110-the first vibration plate; 111-the first basin frame;

112-The first centering piece; 113-The first voice coil bracket;

114-the first voice coil; 115-the first cover;

120-the second vibrating plate; 121-the second basin frame;

122-The second centering support piece; 123-The second voice coil bracket;

124-the second voice coil; 125-the second cover;

141-Fixed bracket; 142-Magnetic conductor;

142a-the first magnetic conductive column; 142b-the second magnetic conductive column;

143-Magnet assembly; 144-First magnetic conductive piece;

145-The first magnet; 146-The second magnetic piece;

147-The second magnet; 148-The third magnetic piece;

149-first gap; 150-second gap;

151-support piece; 152-fourth magnetic conductive piece;

153-The third magnet; 154-The fourth magnet;

155-The fifth magnetic conductive piece; 156-The third gap;

157-the fourth gap; 161-installation part;

162-Guide part; 162a-First guide part;

162b-Second sound guide part; 163-Sound guide channel;

163a-the first sound guide channel; 163b-the second sound guide channel;

811-mounting hole; 811a-first mounting hole;

811b-Second mounting hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below in conjunction with the accompanying drawings.

Reference in this specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, the phrases "in one embodiment," "in another embodiment," "in some embodiments," "in other embodiments," "in "In some other embodiments" does not necessarily refer to the same embodiment, but means "one or more but not all embodiments" unless otherwise specifically emphasized. The terms “including,” “includes,” “having,” and variations thereof all mean “including but not limited to,” unless otherwise specifically emphasized.

The terminology used in the following examples is for the purpose of describing specific embodiments only and is not intended to limit the application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "the" are intended to also Expressions such as "one or more" are included unless the context clearly indicates otherwise.

This application provides a speaker, a speaker module and electronic equipment to achieve miniaturization of the speaker module while ensuring the low-frequency sensitivity of the speaker.

FIG. 2 is a schematic structural diagram of the speaker in the embodiment of the present application, and FIG. 3 is a schematic cross-sectional view of the speaker in FIG. 2 . As shown in FIGS. 2 and 3 , the speaker 10 includes a first vibration component 11 , a second vibration component 12 , a support member 13 and a magnetic circuit component 14 . Among them, the first vibration component 11 , the second vibration component 12 and the magnetic circuit component 14 are coaxially arranged and installed on the support member 13 . The magnetic circuit component 14 is disposed between the first vibration component 11 and the second vibration component 12 so that the first vibration component 11 and the second vibration component 12 can share the magnetic circuit component 14 . The first vibration component 11 includes a first vibration plate 110 , and the second vibration component 12 includes a second vibration plate 120 . The first vibration plate 110 and the second vibration plate 120 are arranged opposite to each other, and a sound cavity 15 may be formed between the first vibration plate 110 and the second vibration plate 120 .

It should be noted that in this application, the acoustic cavity 15 refers to the front cavity, that is, the cavity formed between the first vibration plate 110 and the second vibration plate 120 . In addition, the speaker 10 also includes a rear cavity 17 , that is, the cavity on the side of the first diaphragm 110 away from the magnetic circuit assembly 14 and the cavity on the side of the second diaphragm 120 away from the magnetic circuit assembly 14 .

The speaker 10 of the present application adopts a dual vibration component structure design, in which the first vibration component 11 and the second vibration component 12 are coaxially arranged, and can share the magnetic circuit component 14 and the sound cavity 15. On the one hand, the first vibration component 11 and the second vibration component 12 can be realized. On the other hand, the vibration of the second vibration component 12 in the axial direction can reduce the size of the speaker 10 in the axial direction, which is beneficial to the miniaturization of the speaker module. The first vibration plate 110 and the second vibration plate 120 are coaxially and oppositely arranged. When the first vibration plate 110 and the second vibration plate 120 vibrate at the same time, the first vibration plate 110 and the second vibration plate 120 can face the magnetic circuit assembly at the same time. 14 is displaced, or is simultaneously displaced away from the magnetic circuit assembly 14 . That is to say, the first vibration plate 110 and the second vibration plate 120 can vibrate coaxially toward or in opposite directions, thereby increasing the vibration damping force and offsetting the reaction force caused by the vibration, so that the first vibration component 11 and the second vibration plate 110 can vibrate in opposite directions. The vibration of the component 12 will not be transmitted to the outside, thereby avoiding resonance and improving the acoustic performance of the speaker 10 . In addition, when the first vibration plate 110 and the second vibration plate 120 vibrate simultaneously, strong convection air can be generated, which can take away the heat generated by the first vibration component 11, the second vibration component 12 and the magnetic circuit component 14, and thus Improve the heat dissipation performance of the speaker 10.

Please continue to refer to FIG. 3 . In some embodiments of the present application, the first vibration component 11 may also include a first basket frame 111 , a first centering support piece 112 , a first voice coil bracket 113 and a first voice coil 114 . The second vibration component 12 may also include a second basket 121 , a second centering support piece 122 , a second voice coil bracket 123 and a second voice coil 124 . The first voice coil bracket 113 can be fixed in the first basin frame 111 through the first centering bracket 112, and the second voice coil bracket 123 can be fixed in the second basin frame 121 through the second centering bracket 122. The first voice coil bracket 113 and the second voice coil bracket 123 are coaxially arranged. The first voice coil 114 and the first diaphragm 110 are respectively disposed on the outer edge of the first voice coil bracket 113 , and the first diaphragm 110 is located between the first voice coil 114 and the first centering support piece 112 . When the first voice coil 114 is energized, under the action of the magnetic circuit assembly 14, the first voice coil 114 can drive the first diaphragm 110 to vibrate. The second voice coil 124 and the second diaphragm 120 are respectively disposed on the outer edge of the second voice coil bracket 123 , and the second diaphragm 120 is located between the second voice coil 124 and the second centering support piece 122 . When the second voice coil 124 is energized, under the action of the magnetic circuit assembly 14, the second voice coil 124 can drive the second diaphragm 120 to vibrate. In this embodiment, the first centering support piece 112 and the second centering support piece 122 can position the first voice coil support 113 and the second voice coil support 123 to be coaxially arranged. Moreover, the first vibration component 11 and the second vibration component 12 adopt the same structural design, which not only simplifies the structural design of the speaker 10 and reduces the thickness of the speaker 10 along the central axis x direction, but also simplifies the manufacturing process of the speaker 10, thereby The production cost of the speaker 10 is reduced.

In addition, the first vibration component 11 may also include a first cover 115, which may seal the first voice coil bracket 113 to prevent dust and other particles from entering the first vibration component 11 and the magnetic field through the first voice coil bracket 113. Road component 14. Similarly, the second vibration component 12 may also include a second cover 125 . The second cover 125 can seal the second voice coil bracket 123 to prevent dust and other particles from entering the second vibration component 12 and the magnetic circuit component 14 through the second voice coil bracket 123 .

Figure 4 is a schematic structural diagram of the magnetic circuit assembly in the embodiment of the present application. As shown in FIGS. 3 and 4 , when the above-mentioned magnetic circuit assembly 14 is provided, the magnetic circuit assembly 14 may include a fixed bracket 141 , a magnetic conductor 142 and a magnet assembly 143 . Specifically, the fixed bracket 141 is connected to the support member 13 so that the magnetic circuit assembly 14 is positioned relative to the first vibration assembly 11 and the second vibration assembly 12 . The magnetic conductor 142 is arranged on the fixed bracket 141 , and the magnet assembly 143 is connected to the magnetic conductor 142 . In the magnetic circuit assembly 14 with this structural design, the magnet assembly 143 can emit magnetic lines of force to form an annular magnetic field loop. When the speaker 10 is powered on, the first vibration component 11 and the second vibration component 12 form sound waves under the action of the magnetic circuit component 14, thereby converting electrical energy into sound energy. In this application, the magnet assembly 143 may include one magnet, or may include multiple magnets.

For example, in a specific embodiment, the magnet conductor 142 may be a cylindrical magnet conductor, and the cylindrical magnet conductor, the first vibration component 11 and the second vibration component 12 are coaxially arranged. In this embodiment, the two ends of the cylindrical magnet conductor have openings, and the magnet assembly 143 can be disposed in the cylindrical magnet conductor. The magnet assembly 143 may include a first magnetically conductive sheet 144, a first magnet 145, a second magnetically conductive sheet 146, a second magnet 147 and a third magnetically conductive sheet 148 stacked in sequence along the central axis x. The magnetizing direction of the first magnet 145 is the same as the magnetizing direction of the second magnet 147. The first magnetically conductive piece 144, the second magnetically conductive piece 146 and the third magnetically conductive piece 148 can connect the first magnet 145 and the second magnet 147. The emitted magnetic lines of force are conducted in the set direction, forming a circular magnetic field loop. In this embodiment, the magnetization direction of the first magnet 145 and the magnetization direction of the second magnet 147 are the same as the direction along the central axis x. The magnetic poles of the first magnet 145 and the second magnet 147 are in accordance with N pole and S pole. , N pole, S pole arrangement, or S pole, N pole, S pole, N pole arrangement. In other words, the first magnet 145 and the second magnet 147 have different opposing magnetic poles. The cylindrical magnet conductor can shield the magnetic field to prevent magnetic leakage from the magnet assembly 143 . When the speaker 10 is powered on, the first voice coil 114 and the second voice coil 124 are powered on respectively and move under the action of the magnetic field loop to drive the first vibration plate 110 and the second vibration plate 120 to vibrate, thereby converting electrical energy. for sound energy. The structure of the magnetic circuit assembly 14 is relatively simple and can be designed into a smaller size, which is beneficial to the miniaturization of the speaker 10 .

Please continue to refer to FIG. 4 . There is a first gap 149 between the magnetic conductor 142 and the first magnetic conductor piece 144 . The first voice coil 114 can be inserted into the magnetic conductor 142 through the first gap 149 to be positioned in the magnetic field loop. The energized first voice coil 114 can reciprocate under the action of the magnetic field loop, thereby driving the first diaphragm 110 to vibrate. There is a second gap 150 between the magnetic conductor 142 and the third magnetic conductor piece 148, and the second voice coil 124 can be inserted into the magnetic conductor 142 through the second gap 150 to be positioned in the magnetic field loop. The energized second voice coil 124 can reciprocate under the action of the magnetic field loop, thereby driving the second diaphragm 120 to vibrate.

In the above embodiment, since the first voice coil 114 and the second voice coil 124 move in the axial direction when vibrating after being energized, in order to prevent the first voice coil 114 and the second voice coil 124 from colliding when they move toward each other, the first voice coil 114 and the second voice coil 124 move in the axial direction when vibrating. The size of voice coil 114 may be larger than the size of second voice coil 124 . Specifically, the cross section of the first voice coil bracket 113 perpendicular to the central axis x may be set to be larger than the cross section of the second voice coil bracket 123 perpendicular to the central axis x. In this way, the collision of the first voice coil 114 and the second voice coil 124 during movement can be avoided, and the first voice coil 114 and the second voice coil 124 can overlap and vibrate along the central axis x direction, which is beneficial to reducing the noise of the speaker 10 overall thickness.

In practical applications, even if the size of the first voice coil bracket 113 and the size of the second voice coil bracket 123, the size of the first voice coil 114 and the second voice coil 124, and the size of the first diaphragm 110 and the third The sizes of the two vibration plates 120 are different, but the overall size of the first vibration component 11 can be the same as the overall size of the second vibration component 12. That is to say, the thickness of the first vibration component 11 along the central axis x direction can be the same as that of the second vibration component 12. The two vibration components 12 have the same thickness along the central axis x, and/or the cross section of the first vibration component 11 perpendicular to the central axis x can be equal to the cross section of the second vibration component 12 perpendicular to the central axis x. This can make the overall structure of the speaker 10 simple and facilitate installation and disassembly. Of course, in practice, due to different application scenarios of the speaker 10, the requirements for the appearance and size of the speaker 10 are also different. In some embodiments, the overall size of the first vibration component 11 may be different from or substantially the same as the overall size of the second vibration component 12. In this case, the overall appearance of the speaker 10 may be irregular in shape, which is not specifically limited here. It should be noted that "approximately the same" may mean that the overall size of the first vibration component 11 and the second vibration component 12 may differ by 0.05mm, 0.1mm, 0.2mm, 0.25mm, 0.275mm, 0.4mm, 0.7mm. , 1mm, 3mm, 5.8mm, 7mm or 10mm, etc., this application does not impose specific restrictions. In addition, the difference may be specifically designed according to needs, or may be caused by manufacturing errors.

Please continue to refer to FIG. 4 , the magnetic circuit assembly 14 may also include a support piece 151 to improve the structural strength of the magnetic circuit assembly 14 . In a specific embodiment, the cylindrical magnet conductor can be directly connected to the fixed bracket 141 . The support piece 151 is disposed between the cylindrical magnetic conductor and the magnet assembly 143, and the cylindrical magnetic conductor and the third magnetic conductor 148 are respectively connected to the support piece 151, so that the magnet assembly 143 is fixed to the cylindrical magnetic conductor through the support piece 151. in vivo.

Figure 5 is another structural schematic diagram of the magnetic circuit assembly in the embodiment of the present application. As shown in FIG. 5 , in another specific embodiment, the magnet conductor 142 may be a cylindrical magnet conductor and includes a first cylinder and a second cylinder arranged coaxially. Wherein, the first cylinder is disposed close to the first vibration component 11 . The support piece 151 is disposed between the first cylinder and the second cylinder, and is also located between the second magnetic conductive piece 146 and the second magnet 147 . The fixed bracket 141 , the magnetic conductor 142 , the second magnetic conductor piece 146 and the second magnet 147 are respectively connected to the support piece 151 , so that the magnetic conductor 142 and the magnet assembly 143 are fixed to the fixed bracket 141 through the support piece 151 .

Figure 6 is another structural schematic diagram of the magnetic circuit assembly in the embodiment of the present application. As shown in FIG. 6 , in some other embodiments, the magnetic conductor 142 may also include a first magnetic conductive column 142 a and a second magnetic conductive column 142 b arranged coaxially with the first vibration component 11 . That is to say, the first vibration component 11, the first magnetic conductive column 142a, the second magnetic conductive column 142b and the second vibration component 12 are coaxially arranged. Among them, the first magnetic conductive column 142a is disposed close to the first vibration component 11, and the second magnetic conductive column 142b is disposed close to the second vibration component 12. The magnet assembly 143 includes a fourth magnetically conductive sheet 152, a third magnet 153, a fourth magnet 154 and a fifth magnetically conductive sheet 155 that are stacked in sequence along the central axis x direction. The fourth magnetic conductive piece 152 and the third magnet 153 are disposed on the peripheral side of the first magnetic conductive column 142a, and the fourth magnetic conductive piece 152 is disposed close to the first vibration component 11. The fourth magnet 154 and the fifth magnetic conductive piece 155 are disposed on the peripheral side of the second magnetic conductive column 142b, and the fifth magnetic conductive piece 155 is disposed close to the second vibration component 12. In the magnetic circuit assembly 14 with this structural design, the magnetization direction of the third magnet 153 is the same as the magnetization direction of the fourth magnet 154. The fourth magnetic conductive piece 152, the first magnetic conductive column 142a, the fifth magnetic conductive piece 155 and the second magnetic conductive column 142b can conduct the magnetic lines of force emitted by the third magnet 153 and the fourth magnet 154 according to the set direction to form a ring-shaped magnetic field loop. When the speaker 10 is powered on, the first vibration component 11 and the second vibration component 12 make the first vibration plate 110 and the second vibration plate 120 vibrate under the action of the magnetic circuit component 14, thereby converting electrical energy into sound energy. The structure of the magnetic circuit assembly 14 is relatively simple, which can reduce the size of the speaker 10 in the axial direction.

In one technical solution, there is a third gap 156 between the first magnetically conductive column 142a and the fourth magnetically conductive piece 152, and there is a fourth gap 157 between the second magnetically conductive column 142b and the fifth magnetically conductive piece 155. The first voice coil 114 of the first vibration component 11 is inserted between the first magnetic permeable column 142a and the third magnet 153 through the third gap 156 to be positioned in the magnetic field loop. The second voice coil 124 of the second vibration component 12 is inserted between the second magnetic permeable column 142b and the fourth magnet 154 through the fourth gap 157 to be positioned in the magnetic field loop. In this way, the energized first voice coil 114 can reciprocate under the action of the magnetic field loop, thereby driving the first vibrating plate 110 to vibrate; the energized second voice coil 124 can reciprocate under the action of the magnetic field loop, thereby driving the first diaphragm 110 to vibrate. The second vibration plate 120 is driven to vibrate.

In order to improve the structural strength of the magnetic circuit assembly 14, the magnetic circuit assembly 14 of the above embodiment may also be provided with a supporting piece 151. Specifically, the first magnetically conductive column 142a, the fourth magnetically conductive piece 152 and the third magnet 153 are provided on the side of the support piece 151 close to the first vibration component 11. The second magnetically conductive column 142b, the fourth magnet 154 and the fifth magnetically conductive piece 155 are disposed on the side of the support piece 151 close to the second vibration component 12. In this technical solution, the fixed bracket 141, the third magnet 153, the fourth magnet 154, the first magnetic conductive column 142a and the second magnetic conductive column 142b can be connected to the support piece 151 respectively, so that the third magnet is connected to the support piece 151 through the support piece 151. 153. The fourth magnet 154, the first magnetic conductive column 142a and the second magnetic conductive column 142b are fixed to the fixed bracket 141.

Please continue to refer to FIG. 3 . In the embodiment of the present application, the speaker 10 may further include at least one sound guide component 16 . The sound guide component 16 may include a mounting part 161 and a sound guide part 162 connected to the mounting part 161. Specifically, the mounting portion 161 is used to connect with the housing of the speaker module to position the speaker 10 within the housing. The connection method between the mounting part 161 and the housing is not limited, for example, through threaded connection, riveting, bonding or welding, etc., which will not be described again here. The sound guide part 162 is provided on the peripheral side of the sound cavity 15 , and the sound guide part 162 is provided with a sound guide channel 163 . In this embodiment, the mounting portion 161 can be directly connected to the housing of the speaker module, thereby simplifying the assembly and disassembly of the speaker module. The sound guide channel 163 connects the sound cavity 15 with the outside, thereby guiding sound waves from the sound cavity 15 to the outside. In this embodiment, the specific number of sound guide components 16 is not limited. For example, the speaker 10 may include 1, 2, 3 or 5 sound guide components 16, etc., and there is no specific limitation here.

Figure 7 is another structural schematic diagram of a speaker in an embodiment of the present application. As shown in FIG. 7 , in some other embodiments, the above-mentioned at least one sound guide component 16 may include a first sound guide component 16 a and a second sound guide component 16 b. The speaker 10 uses two sound guide channels 163, namely the first sound guide channel 163a and the second sound guide channel 163b, to increase the sound output area of the speaker 10 and thereby reduce wind noise. Among them, the first sound guide part 162a of the first sound guide component 16a and the second sound guide part 162b of the second sound guide component 16b are disposed on the peripheral side of the sound cavity 15, and the specific positions are not limited. For example, in one embodiment, the first sound guide portion 162a of the first sound guide component 16a and the second sound guide portion 162b of the second sound guide component 16b may be disposed oppositely on both sides of the sound cavity 15, that is, the The first sound guide channel 163a and the second sound guide channel 163b are arranged at an included angle of 180 degrees. Alternatively, in another embodiment, the first sound guide channel 163a and the second sound guide channel 163b may also be arranged at an included angle of 90 degrees. In some other embodiments, the first sound guide channel 163a and the second sound guide channel 163b can also be arranged at an included angle of 30, 45, 60, 70, 83, 100, 270 or 300 degrees. This application discusses the included angle. The specific numerical values are not limited and will not be repeated here.

In the above embodiment, the connection between the mounting part 161 and the sound guide part 162 may be a detachable connection. Alternatively, the mounting portion 161 can also form an integrated structure with the sound guide portion 162 , that is to say, the sound guide component 16 can be an integrally formed structure, which can improve the structural strength of the sound guide component 16 and simplify the manufacturing process of the speaker 10 .

Based on the same technical concept, this application also provides a speaker module. Figure 8 is a schematic structural diagram of a speaker module in an embodiment of the present application. As shown in FIG. 8 , the speaker module 80 includes a shell 81 and the speaker 10 of the above embodiment, wherein the speaker 10 is disposed in the shell 81 . In this speaker module 80, the first vibration component 11 and the second vibration component 12 are coaxially arranged, and can share the magnetic circuit component 14. On the one hand, the first vibration component 11 and the second vibration component 12 can be realized in the axial direction. Vibration, on the other hand, can reduce the size of the speaker 10 in the axial direction, which is beneficial to the miniaturization of the speaker module 80 . Moreover, the first vibration plate 110 and the second vibration plate 120 are coaxially and oppositely arranged. When vibrating, they can simultaneously move toward the magnetic circuit assembly 14 or move away from the magnetic circuit assembly 14 at the same time. That is to say, they can be coaxially facing each other or facing each other. Reverse vibration can increase the vibration damping force and offset the reaction force caused by the vibration, which is beneficial to improving the acoustic performance of the speaker module 80 . In addition, the first vibration plate 110 and the second vibration plate 120 can also generate strong convection air when vibrating, thereby taking away the heat generated by the first vibration component 11, the second vibration component 12 and the magnetic circuit component 14, and thus Improve the heat dissipation performance of the speaker module 80. In this application, the speaker module 80 can be applied to a vehicle-mounted bass module or a subwoofer module, and the speaker module can be miniaturized while ensuring the low-frequency sensitivity of the speaker.

As shown in FIG. 8 , the first vibration component 11 and the second vibration component 12 share the sound cavity 15 , that is, the front cavity formed between the first vibration plate 110 and the second vibration plate 120 . In addition, the cavity surrounded by the housing 81 of the speaker module 80 , the first diaphragm 110 and the second diaphragm 120 forms the back cavity 17 .

When the speaker 10 includes at least one sound guide component 16, the housing 81 may have mounting holes 811 corresponding to the sound guide component 16. The sound guide component 16 is installed in the mounting hole 811, thereby connecting the sound cavity 15 and the mounting hole 811, and guiding sound waves from the sound cavity 15 to the outside. Moreover, the sound guide component 16 can be directly installed with the casing 81 , thereby simplifying the assembly and disassembly of the speaker module 80 . As shown in FIG. 8 , in some embodiments, the speaker 10 may include a sound guide component 16 , the housing 81 is provided with a mounting hole 811 , and the sound guide group is connected to the mounting hole 811 . FIG. 9 is another structural schematic diagram of the speaker module 80 in the embodiment of the present application. As shown in Figure 9, in other embodiments, the speaker 10 may include a first sound guide component 16a and a second sound guide component 16b. In this embodiment, the housing 81 may have a first mounting hole 811a and a second mounting hole 811b. The first sound guide component 16a is installed in the first installation hole 811a, and the second sound guide component 16b is installed in the second installation hole 811b.

Based on the same technical concept, this application also provides an electronic device. The electronic device includes a main body and the speaker module 80 of the above embodiment, wherein the speaker module 80 is disposed on the main body. The electronic device is a type of electronic device having a speaker module 80 . Specifically, the electronic equipment includes but is not limited to electronic equipment such as car speakers, televisions, smart terminals, or smart speakers. This application does not limit the specific application scenarios of the speaker module 80 . Electronic equipment using the above-mentioned speaker module 80 can be miniaturized without affecting low-frequency sensitivity.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, and all of them should be covered. within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (14)

1. A loudspeaker, characterized in that it includes a support member, a first vibration component, a second vibration component and a magnetic circuit component, the first vibration component, the second vibration component and the magnetic circuit component are coaxially arranged In said support, wherein: The first vibration component includes a first vibration plate, the second vibration component includes a second vibration plate, the first vibration plate is opposite to the second vibration plate, and the first vibration plate is in contact with the second vibration plate. A sound cavity is formed between the second vibrating plates; The magnetic circuit component is disposed between the first vibration component and the second vibration component, and the first vibration component and the second vibration component share the acoustic cavity and the magnetic circuit component. 2. The speaker according to claim 1, wherein the magnetic circuit assembly includes a fixed bracket, a magnetic conductor and a magnet assembly, wherein the fixed bracket is connected to the support member, and the magnetic conductor is connected to the Fixed bracket connection; The magnetic conductor is a cylindrical magnet conductor, and the cylindrical magnet conductor is coaxially arranged with the first vibration component; The magnet assembly is arranged in the cylindrical magnet; the magnet assembly includes a first magnetic conductive piece, a first magnet, a second magnetic conductive piece, a second magnet and a third magnetic conductive piece that are stacked sequentially along the axial direction. pieces, wherein the first magnetically conductive piece is disposed close to the first vibration component, the third magnetically permeable sheet is disposed close to the second vibration component, and the magnetization direction of the first magnet is consistent with the second vibration component. The magnets are magnetized in the same direction. 3. The speaker according to claim 2, wherein there is a first gap between the cylindrical magnetic conductor and the first magnetic conductive piece, and the cylindrical magnetic conductive body and the third magnetic conductive piece There is a second gap between; The first vibration component further includes a first voice coil, which is inserted into the cylindrical magnet conductor through the first gap; the second vibration component further includes a second voice coil, the third The second voice coil is inserted into the cylindrical magnet conductor through the second gap; the diameter of the first voice coil is not equal to the diameter of the second voice coil. 4. The speaker according to claim 2 or 3, wherein the magnetic circuit assembly further includes a first support piece; The cylindrical magnet conductor is connected to the fixed bracket, the first support piece is disposed between the cylindrical magnet conductor and the magnet assembly, and the cylindrical magnet conductor and the third magnetic conductor piece Respectively connected to the first support piece; or, The cylindrical magnetic conductor includes a first cylinder and a second cylinder arranged coaxially. The first cylinder is arranged close to the first vibration component; the first support piece is arranged on the first cylinder. between the second cylinder and the second magnetic conductive sheet and the second magnet; the fixed bracket, the first cylinder, the second cylinder, the The second magnetic conductive piece and the second magnet are respectively connected to the first supporting piece. 5. The speaker according to claim 1, wherein the magnetic circuit assembly includes a fixed bracket, a magnetic conductor and a magnet assembly, wherein the fixed bracket is connected to the support member, and the magnetic conductor is connected to the The fixed bracket is connected, and the magnet assembly is connected with the magnet conductor; The magnetic conductive body includes a first magnetic conductive column and a second magnetic conductive column coaxially arranged with the first vibration component. The first magnetic conductive column is disposed close to the first vibration component. The second magnetic conductive column The column is arranged close to the second vibration component; The magnet assembly includes a fourth magnetically conductive piece, a third magnet, a fourth magnet and a fifth magnetically conductive piece that are stacked sequentially along the axial direction, wherein the fourth magnetically conductive piece and the third magnet are disposed on the on the peripheral side of the first magnetically conductive column, and the fourth magnetically conductive piece is disposed close to the first vibration component; the fourth magnet and the fifth magnetically conductive piece are disposed on the second magnetically conductive column peripheral side, and the fifth magnetically conductive piece is disposed close to the second vibration component; the magnetization direction of the third magnet is the same as the magnetization direction of the fourth magnet. 6. The speaker according to claim 5, characterized in that there is a third gap between the first magnetic conductive column and the fourth magnetic conductive piece, and the second magnetic conductive column and the fifth magnetic conductive piece There is a fourth gap between the magnetic pieces; The first vibration component also includes a third voice coil, which is inserted between the first magnetic conductive column and the third magnet through the third gap; the second vibration component also It includes a fourth voice coil, which is inserted between the second magnetic conductive column and the fourth magnet through the fourth gap; the diameter of the third voice coil is the same as the diameter of the fourth voice coil. The diameters of the circles are not equal. 7. The speaker according to claim 6, wherein the magnetic circuit assembly further includes a second support piece; the first magnetic conductive column, the fourth magnetic conductive piece and the third magnet are arranged on The second support piece is close to the side of the first vibration component, and the second magnetic conductive column, the fourth magnet and the fifth magnetic conductive piece are arranged on the second support piece close to the first vibration component. On one side of the two vibration components, the fixed bracket, the third magnet, the fourth magnet, the first magnetic conductive column and the second magnetic conductive column are respectively connected to the second support piece. 8. The speaker according to any one of claims 1 to 7, characterized in that the speaker further includes at least one sound guide component, the sound guide component includes a mounting part and a sound guide part, the mounting part is When connected to the shell of the speaker module, the sound guide part is connected to the installation part and is arranged on the peripheral side of the sound cavity; the sound guide part is provided with a sound guide channel, and the sound guide channel communicates with all Describe the vocal cavity and the outside. 9. The speaker according to claim 8, wherein the at least one sound guide component includes a first sound guide component and a second sound guide component, and the sound guide part of the first sound guide component and the third sound guide component The sound guide parts of the two sound guide components are arranged oppositely on both sides of the sound cavity. 10. The speaker according to claim 8 or 9, characterized in that the mounting part and the sound guide part are of an integral structure. 11. The speaker according to any one of claims 1 to 10, wherein the size of the first vibration component is equal to the size of the second vibration component. 12. A speaker module, characterized by comprising a shell and the speaker according to any one of claims 1 to 11, wherein the speaker is disposed in the shell. 13. The speaker module according to claim 12, wherein when the speaker includes at least one sound guide component, the housing has a mounting hole corresponding to the sound guide component, and the sound guide component Installed in the mounting holes. 14. An electronic device, characterized by comprising a main body and a speaker module according to claim 12 or 13, wherein the speaker module is provided on the main body.