CN111556404A - a loudspeaker - Google Patents

Abstract

The invention relates to the technical field of loudspeakers and discloses a loudspeaker. The loudspeaker includes a diaphragm, a first mass part and a second mass part, the first mass part is connected to the diaphragm, the second mass part is connected to the first mass part through a first elastic part, wherein the first mass part or the second mass part has voice coil. The loudspeaker further includes a magnetic circuit assembly for generating a magnetic field, so that when the voice coil is fed with current and under the action of the magnetic field, the mass part with the voice coil drives the mass part without the voice coil to move, thereby making the first mass part move. The component and the second mass component together drive the diaphragm to vibrate and produce sound. In the above manner, the present invention can improve the effect of the speaker to restore the sound signal and is beneficial to reduce the volume of the speaker.

Description

a loudspeaker

technical field

The present invention relates to the technical field of loudspeakers, in particular to a loudspeaker.

Background technique

The traditional moving coil loudspeaker uses a single radiating surface and a single resonance system design scheme. Specifically, the voice coil is used as the driving source. The voice coil itself and the ring of the diaphragm form a resonance system, which drives the entire diaphragm voice coil assembly to vibrate, and then form an acoustic signal.

However, for a traditional moving coil loudspeaker with a single radiating surface and a single resonance system, the closed-field low-frequency acoustic output before the first resonance frequency is a smooth curve without forming formant peaks and valleys. This completely smooth low-frequency curve does not conform to the restoration of sound in a closed field, and cannot give the human ear an optimal musical experience.

In response to the above-mentioned technical problems, some multi-unit solutions have appeared on the market, specifically using two or more speaker units to adjust the curve. However, the design scheme of the multi-radiating surface and multi-resonance system takes up too much space, and the radiating surfaces of the various diaphragms will interact with each other, so the effect is not good.

SUMMARY OF THE INVENTION

In view of this, the main technical problem to be solved by the present invention is to provide a loudspeaker, which can improve the effect of the loudspeaker to restore sound signals and is conducive to reducing the volume of the loudspeaker.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a loudspeaker. The loudspeaker comprises a diaphragm, a first mass part and a second mass part, the first mass part is connected to the diaphragm, the second mass part is connected to the first mass part through a first elastic part, wherein the first mass part or the second mass part has voice coil. The loudspeaker also includes a magnetic circuit assembly for generating a magnetic field, so that when the voice coil is fed with current and under the action of the magnetic field, the mass part with the voice coil drives the mass part without the voice coil to move, thereby making the first mass part move. The component and the second mass component together drive the diaphragm to vibrate and produce sound.

In an embodiment of the present invention, the second mass member is located on a side of the first mass member away from the diaphragm.

In an embodiment of the present invention, the speaker includes at least two first elastic members, and the at least two first elastic members are spaced apart from each other along the circumferential direction of the first mass member and the second mass member.

In an embodiment of the present invention, the first elastic member is annular, and opposite sides of the first elastic member are respectively connected to the first mass member and the second mass member.

In an embodiment of the present invention, the magnetic circuit assembly has a voice coil cavity, a magnetic field is formed in the voice coil cavity, at least part of the first mass part and the second mass part are located in the voice coil cavity, wherein the first mass part and the second mass part are located in the voice coil cavity. The two-mass component moves along the axial direction of the voice coil cavity.

In an embodiment of the present invention, the speaker further includes a second elastic member, one end of the second elastic member is connected to the second mass member, the other end is fixed, and the second elastic member is used to provide a radial support force to the second mass member, to limit the relative position of the second mass component in the radial direction.

In an embodiment of the present invention, the speaker further includes a frame, a groove is formed on the magnetic circuit component, and an end of the second elastic member away from the second mass component is fixed to the frame through the groove.

In an embodiment of the present invention, the second elastic member is connected to a position on the second mass member where the first elastic member is connected.

In an embodiment of the present invention, the magnetic circuit assembly has a voice coil cavity, and at least parts of the first mass component and the second mass component are located in the voice coil cavity, wherein the voice coil cavity is filled with a viscous medium, and the viscous medium is used to transmit to the first mass component. The first mass part and the second mass part provide viscous resistance to limit their relative positions in the radial direction.

In an embodiment of the present invention, the diaphragm includes a top of the ball and a ring portion connected to an outer edge of the top of the ball and surrounding the top of the ball, and the first mass component is connected to the top of the ball.

The beneficial effects of the present invention are: different from the prior art, the present invention provides a loudspeaker. The speaker is designed with only one diaphragm, that is, a single radiating surface design. Compared with the design of the traditional speaker with multiple speaker units, it is beneficial to reduce the volume of the speaker, and also avoids the difference between the diaphragm radiating surfaces of different speaker units. Therefore, it can improve the effect of the speaker to restore the sound signal. At the same time, the first mass component and the second mass component jointly drive the diaphragm to vibrate and emit sound, that is, the first mass component and the second mass component form a multi-resonance system, which can adjust the low-frequency acoustic curve of the enclosed field before the first resonance frequency of the speaker. , so that the formant peaks and valleys are formed, which can further improve the effect of the speaker to restore the sound signal, and give users the best acoustic experience.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention. Furthermore, these drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept to those skilled in the art by referring to specific embodiments.

1 is a schematic structural diagram of an embodiment of a speaker of the present invention;

Fig. 2 is the exploded structure schematic diagram of loudspeaker shown in Fig. 1;

Fig. 3 is the sectional structure schematic diagram of the loudspeaker shown in Fig. 1;

Fig. 4 is the structural representation of loudspeaker A area shown in Fig. 3;

5 is a schematic cross-sectional structure diagram of another embodiment of the speaker of the present invention;

FIG. 6 is a schematic diagram of the simulation comparison of the acoustic curves of the speaker of the present invention and the conventional speaker.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the implementation of the present invention. examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The embodiments described below and features in the embodiments may be combined with each other without conflict.

In order to solve the technical problems of poor sound signal restoration effect and large volume in the prior art, an embodiment of the present invention provides a loudspeaker. The loudspeaker comprises a diaphragm, a first mass part and a second mass part, the first mass part is connected to the diaphragm, the second mass part is connected to the first mass part through a first elastic part, wherein the first mass part or the second mass part has voice coil. The loudspeaker also includes a magnetic circuit assembly for generating a magnetic field, so that when the voice coil is fed with current and under the action of the magnetic field, the mass part with the voice coil drives the mass part without the voice coil to move, thereby making the first mass part move. The component and the second mass component together drive the diaphragm to vibrate and produce sound. Details are described below.

Please refer to FIGS. 1-4. FIG. 1 is a schematic structural diagram of an embodiment of a speaker according to the present invention, FIG. 2 is a schematic diagram of an exploded structure of the speaker shown in FIG. 1, FIG. 3 is a schematic cross-sectional structure diagram of the speaker shown in FIG. 1, and FIG. 4 is a diagram of 3 is a schematic diagram of the structure of the speaker A area.

In one embodiment, the loudspeaker may be a moving coil type loudspeaker or the like, which has a diaphragm 10, and the function of outputting audio from the loudspeaker is realized by driving the diaphragm 10 to vibrate. The speakers described in this embodiment can be applied to devices such as earphones and audio devices, which are not limited herein.

The loudspeaker of this embodiment is designed with only one diaphragm 10 , that is, the design of a single radiating surface is adopted. Traditional speakers use a multi-speaker unit design, where each speaker unit has a diaphragm. Compared with the multi-speaker unit design of the traditional loudspeaker, the number of the diaphragms 10 of the loudspeaker in this embodiment is reduced, which is conducive to reducing the volume of the loudspeaker, and also avoids the mutual influence and interference between the diaphragm radiation surfaces of different loudspeaker units. In addition, the problem of difficult matching of loudness and phase caused by the different positions and sizes of the diaphragm radiation surfaces of different speaker units is avoided, thereby improving the effect of the speaker in restoring sound signals.

The speaker of this embodiment further includes a first mass part 20 and a second mass part 30 . The first mass member 20 is connected to the diaphragm 10, and the second mass member 30 is connected to the first mass member 20 through the first elastic member 40, wherein the first mass member 20 or the second mass member 30 has a voice coil 50 (as shown in FIG. 4 ). , the same below).

The speaker also includes a magnetic circuit assembly 60 . The magnetic circuit assembly 60 is used to generate a magnetic field, so that when the voice coil 50 is supplied with current and under the action of the magnetic field, the mass part with the voice coil 50 drives the mass part without the voice coil 50 to move, thereby making the first mass part move 20 and the second mass component 30 together drive the diaphragm 10 to vibrate and produce sound.

That is to say, in order to overcome the defect that the low frequency of the closed field before the first resonance frequency of the loudspeaker of the traditional single radiating surface and single resonance system is not easy to adjust, the loudspeaker of this embodiment is composed of a first mass part 20 and a second mass part 30 Two resonance systems, the first mass component 20 and the second mass component 30 jointly drive the diaphragm 10 to vibrate and sound, and the motions of the first mass component 20 and the second mass component 30 act on the diaphragm 10 respectively, so that a single-vibration-based system can be realized. The multi-resonance system of the membrane 10 (that is, the single radiating surface) makes the first resonance frequency of the loudspeaker (the first resonance frequency is defined as extending from low frequency to high frequency, and the frequency at which the first resonance peak in the frequency response curve of the loudspeaker is located). , which is the resonant frequency of the speaker itself), it is easier to adjust the low-frequency part of the closed field before the first resonant frequency of the speaker, so that the low-frequency acoustic curve of the closed field before the first resonant frequency of the speaker can be adjusted to form a resonance peak and valley, that is, the first resonance The acoustic curve of the low-frequency part before the frequency is L-shaped (as shown in the curve I in Figure 6 below), which is conducive to the restoration of the sound signal in the closed field, that is, it can further improve the effect of the speaker to restore the sound signal, and give users better quality, More comfortable acoustic experience. Among them, the closed field is defined as the closed environment formed by the cooperation between the loudspeaker and the human ear after the user wears the loudspeaker.

It should be noted that, in this embodiment, the corresponding properties of the diaphragm 10 , the first elastic member 40 , the first mass member 20 , and the second mass member 30 can be adjusted (for example, the elasticity of the first elastic member 40 , the first mass component 20 and the quality of the second mass component 30, etc.) to adjust the acoustic parameters such as the first resonance frequency of the speaker. Wherein, the adjustment of the mass of the first mass part 20 and the second mass part 30 can be realized by adjusting the mass of the first mass part 20 and the second mass part 30 themselves or by carrying additional additional mass, which is not limited here. .

The second mass member 30 is connected to the first mass member 20 through the first elastic member 40 , and the first mass member 20 or the second mass member 30 has a voice coil 50 . The mass component with the voice coil 50 can move under the action of the magnetic field when the voice coil 50 is supplied with current, while the mass component without the voice coil 50 is a follower, and the mass component with the voice coil 50 passes through the first The elastic member 40 drives the mass member without the voice coil 50 to move.

If the first mass part 20 and the second mass part 30 are rigidly connected, the first mass part 20 and the second mass part 30 will behave synchronously under the action of the magnetic field, so that although the speaker is provided with the first mass part 20 and the second mass part 30 The second mass component 30 is essentially a mass component that drives the diaphragm 10 to vibrate and emit sound, that is, it is essentially a single resonance system. Moreover, if both the first mass part 20 and the second mass part 30 have a voice coil 50, it is possible that the first mass part 20 and the second mass part 30 can drive the diaphragm 10 to vibrate and sound synchronously, which is still a single resonance system in essence. .

In addition, since the voice coil 50 of the speaker is usually arranged in a ring shape, in order to match the voice coil 50 so that the voice coil 50 is arranged on the first mass member 20 or the second mass member 30, the first mass member 20 and the second mass member 30 are the same In the shape of an annular shape, the voice coil 50 surrounds the first mass member 20 or the second mass member 30 along the circumferential direction of the first mass member 20 or the second mass member 30 .

FIG. 4 shows a case where the first mass part 20 has a voice coil 50 , and the first mass part 20 itself is a voice coil 50 formed by winding a coil. Of course, in other embodiments of the present invention, it may also be a voice coil 50 in which the second mass component 30 itself is wound with a coil, or a voice coil 50 in which the first mass component 20 or the second mass component 30 is additionally equipped with a voice coil 50 . Design is not limited here.

Please continue to refer to Figure 2 and Figure 3. In one embodiment, the second mass member 30 is located on the side of the first mass member 20 away from the diaphragm 10 , and the opposite ends of the first mass member 20 and the second mass member 30 are respectively connected to the first elastic members 40 .

Of course, in other embodiments of the present invention, the first mass part 20 and the second mass part 30 may be arranged in a nest with each other, and the first mass part 20 and the second mass part 30 are connected by the first elastic part 40, so that Likewise, the mass part without the voice coil 50 can be driven to move by the mass part with the voice coil 50 among them.

The following description will be given by taking the second mass member 30 being located on the side of the first mass member 20 away from the diaphragm 10 as an example, which is only for the purpose of discussion, and is not intended to be limiting.

Please continue to refer to Figure 3. In one embodiment, the magnetic circuit assembly 60 has a voice coil cavity 61 , and the voice coil cavity 61 is a cylindrical structure corresponding to the first mass component 20 and the second mass component 30 . The above-mentioned magnetic field is formed in the voice coil cavity 61 , and at least part of the first mass member 20 and the second mass member 30 are located in the voice coil cavity 61 , so that when the voice coil 50 passes current and under the action of the magnetic field, the first The mass part 20 and the second mass part 30 move in the axial direction of the voice coil cavity 61 .

Please continue to refer to Figure 2. In one embodiment, the loudspeaker includes at least two first elastic members 40, the at least two first elastic members 40 are spaced apart from each other along the circumferential direction of the first mass member 20 and the second mass member 30, and each of the first elastic members 40 Two ends of the piece 40 are respectively connected to the first mass part 20 and the second mass part 30 to realize elastic connection between the first mass part 20 and the second mass part 30 .

Further, the at least two first elastic members 40 are evenly distributed along the circumferential direction of the first mass member 20 and the second mass member 30 , which is beneficial to improve that the first mass member 20 and the second mass member 30 do not have a voice coil 50 The effect of the quality component moving with the quality component having the voice coil 50 is further beneficial for the speaker to restore the sound signal, and improves the effect of the speaker to restore the sound signal.

In an alternative embodiment, the first elastic member 40 may also be annular. Specifically, the first elastic member 40 is arranged around the circumference of the first mass member 20 and the second mass member 30 . The sides connect the first mass part 20 and the second mass part 30 respectively. That is to say, the first elastic members 40 in this embodiment are not designed with at least two first elastic members 40 and spaced apart from each other as described in the above embodiment, which is not limited herein.

It should be noted that the cross-sectional shape of the first elastic member 40 in the axial direction of the first mass member 20 and the second mass member 30 (as shown by the arrow X in FIG. 3 , the same below) is preferably an arc shape, as shown in FIG. 3 . . The arc-shaped first elastic member 40 is beneficial to ensure the effect that the mass member without the voice coil 50 of the first mass member 20 and the second mass member 30 moves with the mass member with the voice coil 50 .

Please continue to refer to Figure 2 and Figure 3. In one embodiment, since the first mass member 20 is connected to the vibrating membrane 10, the vibrating membrane 10 can play a role of limiting the relative position of the first mass member 20 in the radial direction, while the radial The relative position is not fixed. The radial directions of the first mass member 20 and the second mass member 30 are shown by arrow Y in FIG. 3 , the same below.

In view of this, the speaker further includes a second elastic member 70 . One end of the second elastic member 70 is connected to the second mass member 30, and the other end is fixed. The second elastic member 70 is used to provide a radial support force to the second mass member 30 to limit the relative position of the second mass member 30 in the radial direction, that is, to play a centering role. The second elastic member 70 only serves to limit the relative position of the second mass member 30 in the radial direction, and does not affect the movement of the second mass member 30 to drive the vibrating diaphragm 10 to vibrate in the axial direction as much as possible.

Of course, in other embodiments of the present invention, the first mass component 20 may also be further limited in its relative position in the radial direction by the second elastic member 70, so as to ensure the normal operation of the first mass component 20 and avoid affecting the audio output by the speaker sound quality.

It should be noted that, the cross-sectional shape of the second elastic member 70 in the radial direction of the second mass member 30 is preferably an arc shape, as shown in FIGS. 2 and 3 . The arc-shaped second elastic member 70 can provide sufficient radial support force to the second mass member 30 . 2 and 3 show the case where the speaker includes at least two second elastic members 70, the at least two second elastic members 70 are spaced apart from each other along the circumferential direction of the second mass member 30, and two second elastic members The members 70 are disposed opposite to each other in the radial direction of the second mass member 30, which is beneficial to stably maintain the relative position of the second mass member 30 in the radial direction.

Of course, in other embodiments of the present invention, the second elastic member 70 can also be arranged in a ring shape, which is arranged around the second mass member 30 and forms an encirclement, which is also beneficial to stably keeping the second mass member 30 in the radial direction. The relative position of the upward is not limited here.

Please continue to refer to Figures 1 to 3. In one embodiment, the speaker also includes a frame 80 . The frame 80 serves as a basic carrier, and the diaphragm 10 and the magnetic circuit assembly 60 of the speaker are all fixed on the frame 80 . The magnetic circuit assembly 60 is provided with a groove 62 , and the end of the second elastic member 70 away from the second mass member 30 is fixed to the frame 80 through the groove 62 to achieve fixing the end of the second elastic member 70 away from the second mass member 30 . department.

Taking the internal magnetic type magnetic circuit assembly 60 shown in FIG. 2 and FIG. 3 as an example, the magnetic circuit assembly 60 includes a magnet 63 and a magnet conducting body 64, the magnet 63 is arranged in the magnet conducting body 64, and the magnet 63 and the magnet conducting body 64 are surrounded to form a sound. The coil cavity 61 , at least part of the first mass part 20 and the second mass part 30 are located in the voice coil cavity 61 . The first mass part 20 and the second mass part 30 are sleeved on the outer circumference of the magnet 63 and are located in the space surrounded by the magnet conducting body 64 . The groove 62 is formed on the magnet conductor 64 and radially penetrates the magnet conductor 64 .

Of course, in other embodiments of the present invention, the magnetic circuit assembly 60 may also adopt an external magnetic type or an internal and external magnetic type design, which belongs to the understanding of those skilled in the art and will not be repeated here.

Of course, in other embodiments of the present invention, the end of the second elastic member 70 away from the second mass member 30 may be directly fixed to the magnetic circuit assembly 60 to fix the end of the second elastic member 70 away from the second mass member 30 At the same time, the design of the groove 62 on the magnetic circuit assembly 60 is omitted.

Please continue to refer to Figure 2 and Figure 3. In one embodiment, the second elastic member 70 is connected to a position on the second mass member 30 where the first elastic member 40 is connected. That is to say, the first elastic member 40 and the second elastic member 70 are connected to the same position on the second mass member 30 , so that the process of connecting the first elastic member 40 and the second elastic member 70 to the second mass member 30 can be done together By doing so, the problem of increased processes caused by connecting the first elastic member 40 and the second elastic member 70 to the second mass member 30 through two processes can be avoided, which is beneficial to simplify the manufacturing process of the speaker. Wherein, the first elastic members 40 may be a design with at least two in number and spaced apart from each other as described in the above-mentioned embodiment, or a design in a ring shape as a whole, which is not limited herein.

For example, FIGS. 2 and 3 show that at least two first elastic members 40 are spaced apart from each other along the circumferential direction of the second mass member 30 , and two or two first elastic members 40 are opposite to each other in the radial direction of the second mass member 30 . The arrangement is beneficial to ensure the effect of transmission between the first mass part 20 and the second mass part 30 . In addition, at least two second elastic members 70 are arranged spaced apart from each other along the circumferential direction of the second mass member 30, and two second elastic members 70 are arranged opposite to each other in the radial direction of the second mass member 30, the beneficial effects of which have been implemented above. It is described in the example and will not be repeated here. Wherein, the first elastic member 40 and the second elastic member 70 are connected to the same position on the second mass member 30 .

Of course, in other embodiments of the present invention, the first elastic member 40 and the second elastic member 70 may also be connected to opposite sides of the second mass member 30, etc., and are not limited to the first elastic member 40 and the second elastic member The component 70 is connected to the same position on the second mass component 30, which is not limited herein.

Please refer to FIG. 5 , which is a schematic cross-sectional structure diagram of another embodiment of the speaker of the present invention.

In an alternative embodiment, the realization of limiting the relative position of the second mass component 30 in the radial direction is not limited to the use of the second elastic member as described in the above-mentioned embodiment, and specifically, the voice coil cavity 61 may be filled with a viscous medium 90, and the viscous The medium 90 is used to provide viscous resistance to the first mass member 20 and the second mass member 30 to limit their relative positions in the radial direction.

Further, the viscous medium 90 may be a magnetic fluid or the like, which has a certain viscosity and can be magnetized under the action of an external magnetic field to have magnetism, so that the viscous medium 90 is better retained in the voice coil cavity 61 and does not follow the first mass component 20 . The voice coil cavity 61 is splashed out due to the movement of the second mass member 30 . The aforementioned external magnetic field may be provided by the magnetic circuit assembly 60 , specifically, the magnetic field used by the magnetic circuit assembly 60 to drive the first mass part 20 and the second mass part 30 to move.

Please continue to refer to Figure 2 and Figure 3. In one embodiment, the diaphragm 10 includes a ball top 11 and a ring portion 12 connected to the outer edge of the ball top 11 and surrounding the ball top 11 , and the first mass component 20 is connected to the ball top 11 . The outer edge of the folded ring portion 12 is preferably fixed on the frame 80 , and the folded ring portion 12 acts as an elastic member that matches the vibration of the ball top 11 , so as to cooperate with the ball top 11 to vibrate and emit sound. Wherein, the ball top 11 shown in FIG. 2 and FIG. 3 is arranged in a plane shape.

FIG. 6 shows the simulation comparison of the acoustic curves of the loudspeaker of the double resonance system of the present embodiment and the loudspeaker of the conventional single resonance system. It can be clearly seen that the acoustic curve of the loudspeaker of this embodiment (ie, curve I) has a 10dB drop at about 200 Hz compared with the acoustic curve of the speaker of the traditional single-resonance system (ie, curve II). The low-frequency acoustic curve of the closed field before the first resonance frequency is adjusted, and it is no longer a smooth curve, which is conducive to the restoration of the sound signal in the closed field, that is, it can improve the effect of the speaker to restore the sound signal, and give users the best quality acoustic experience .

To sum up, the loudspeaker provided by the present invention is designed with only one diaphragm, that is, the single-radiating surface design is used. Compared with the traditional loudspeaker multi-speaker unit design, it is beneficial to reduce the volume of the loudspeaker, and also avoids the need for The mutual influence and interference between the diaphragm radiating surfaces of different speaker units can be improved, so the effect of the speaker in restoring sound signals can be improved. At the same time, the first mass component and the second mass component jointly drive the diaphragm to vibrate and emit sound, that is, the first mass component and the second mass component form a multi-resonance system, which can adjust the low-frequency acoustic curve of the enclosed field before the first resonance frequency of the speaker. , so that the formant peaks and valleys are formed, which can further improve the effect of the speaker to restore the sound signal, and give users the best acoustic experience.

In addition, in the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected", "stacked" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A loudspeaker, wherein the loudspeaker comprises: diaphragm; A first mass part and a second mass part, the first mass part is connected to the diaphragm, the second mass part is connected to the first mass part through a first elastic part, wherein the first mass part or the the second mass component has a voice coil; The magnetic circuit assembly is used for generating a magnetic field, so that when the voice coil is supplied with electric current and under the action of the magnetic field, the mass part with the voice coil drives the mass part without the voice coil to move, and further The first mass component and the second mass component jointly drive the diaphragm to vibrate and emit sound. 2 . The loudspeaker according to claim 1 , wherein the second mass member is located on a side of the first mass member away from the diaphragm. 3 . 3. The loudspeaker according to claim 1 or 2, wherein the loudspeaker comprises at least two of the first elastic members, and the at least two first elastic members are located along the first mass member and the The circumferential directions of the second mass components are spaced apart from each other. 4 . The loudspeaker according to claim 1 or 2 , wherein the first elastic member is annular, and opposite sides of the first elastic member are respectively connected to the first mass member and the second mass member. 5 . quality parts. 5 . The loudspeaker according to claim 2 , wherein the magnetic circuit assembly has a voice coil cavity in which the magnetic field is formed, at least part of the first mass component and the second A second mass member is located in the voice coil cavity, wherein the first mass member and the second mass member move along the axial direction of the voice coil cavity. 6 . The speaker according to claim 1 , wherein the speaker further comprises a second elastic member, one end of the second elastic member is connected to the second mass member, and the other end is fixed, and the second elastic member is fixed. 7 . The part is used to provide radial support force to the second mass part, so as to limit the relative position of the second mass part in the radial direction. 7 . The loudspeaker according to claim 6 , wherein the loudspeaker further comprises a frame, a groove is formed on the magnetic circuit assembly, and the end of the second elastic member away from the second mass member passes through. 8 . The groove is fixed to the frame. 8 . The loudspeaker according to claim 6 , wherein the second elastic member is connected to a position on the second mass member where the first elastic member is connected. 9 . 9. The loudspeaker of claim 1, wherein the magnetic circuit assembly has a voice coil cavity in which at least parts of the first mass member and the second mass member are located, wherein The voice coil cavity is filled with a viscous medium, and the viscous medium is used to provide viscous resistance to the first mass part and the second mass part, so as to limit their relative positions in the radial direction. 10 . The loudspeaker according to claim 1 , wherein the diaphragm comprises a spherical top and a ring portion connected to the outer edge of the spherical top and surrounding the spherical top, and the first mass component is connected to the outer edge of the spherical top. 11 . the top of the ball.

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