WO2019205714A1

WO2019205714A1 - Sound-emitting apparatus

Info

Publication number: WO2019205714A1
Application number: PCT/CN2018/125472
Authority: WO
Inventors: 郭翔; 马江羽
Original assignee: 歌尔股份有限公司
Priority date: 2018-04-28
Filing date: 2018-12-29
Publication date: 2019-10-31
Also published as: CN108540908B; CN108540908A

Abstract

Disclosed in the present invention is a sound-emitting apparatus. The sound-emitting apparatus has a rectangular structure, and comprises: a magnetic circuit system, the magnetic circuit system comprising a central magnetic part and an edge magnetic part, the central magnetic part having two opposite first long edges and two opposite second long edges, the adjacent end parts of the first long edges and the second long edges having a first short straight edge, and the edge magnetic part surrounding the periphery of the central magnetic part; a vibration assembly, the vibration assembly comprising a voice coil, a diaphragm, and a support component; the voice coil surrounds the periphery of the central magnetic part, the voice coil comprising two opposite third long edges and two opposite fourth long edges, the adjacent end parts of the third long edges and the fourth long edges having a second short straight edge corresponding to the first short straight edge; the diaphragm is connected to the end face of one side of the voice coil, and the support component is connected to the other side of the voice coil, an inner end of the support component being connected to the second short straight edges.

Description

Sounding device

Technical field

The invention belongs to the technical field of electroacoustic transduction, and in particular to a sounding device.

Background technique

In recent years, the technology of consumer electronic products has developed rapidly, and smart phones, tablet computers, and virtual reality devices have been widely used in people's daily lives. Related accessories in electronic products also need to be gradually improved and updated to meet consumer demand for electronic products.

The sounding device is an important electro-acoustic conversion component in electronic products for converting sound signals into sound. It is used to form components such as speakers, earpieces, and earphones for electronic products. Among them, the moving coil type sounding device is a specific sounding device structure widely used in electronic products, and can adapt to various sounding requirements of electronic products.

With the technological development of electronic products, it gradually began to adopt intelligent power amplifier solutions to improve the output power of the sounding device. Accordingly, the sounding device can generate a larger amplitude and a stronger sound output in a specific application. However, the existing moving coil type sounding device has a severe polarization swing phenomenon after greatly increasing the amplitude. On the one hand, this polarization phenomenon causes collision between a vibrating member such as a voice coil and a diaphragm and other stationary members in the sounding device; on the other hand, the sound performance is degraded, and the listening sound of the electronic product is poor.

Therefore, it is necessary to improve the moving coil sounding device, reduce the polarization problem, or improve the sound performance.

Summary of the invention

It is an object of the invention to provide a new technical solution for a sounding device.

According to a first aspect of the present invention, a sound emitting device is provided, the sound generating device having a rectangular structure, comprising:

a magnetic circuit system, the magnetic circuit system comprising a central magnetic portion and an edge magnetic portion, the central magnetic portion having two opposite first long sides and two opposite second long sides, the first long side and the The mutually adjacent ends of the second long side have a first short straight side, and the edge magnetic portion surrounds the central magnetic portion;

a vibration assembly including a voice coil, a diaphragm, and a support member;

The voice coil surrounds the central magnetic portion, the voice coil includes two opposite third long sides and opposite two fourth long sides, the third long side and the fourth long side The mutually adjacent ends have a second short straight edge corresponding to the first short straight edge;

The diaphragm is coupled to one end surface of the voice coil, the support member is coupled to the other side of the voice coil, and an inner end of the support member is coupled to the second short straight side.

Optionally, an inner end of the support member is fixed on an end surface of the second short straight side;

Alternatively, the inner end of the support member is fixed to the side wall of the second short straight side.

Optionally, the support member further includes an outer end for fixing, and an elastic portion connected between the inner end and the outer end.

Optionally, the elastic portion is a sheet-shaped arc-shaped convex structure, and the convex convex direction of the curved convex structure faces the diaphragm or is away from the diaphragm.

Optionally, the elastic portion is a sheet-like wavy structure;

Alternatively, the elastic portion is a strip structure extending in an S-shape.

Optionally, four sounding devices are disposed in the sounding device, and the four supporting members are respectively in one-to-one correspondence with the four second short straight sides.

Alternatively, the inner ends of the adjacent support members are connected to each other, and the four support members constitute an annular structure.

Optionally, the edge magnetic portion includes four edge magnets, and an end portion of two adjacent side magnets has a notch portion therebetween, and the supporting member is received in the notch portion, the side magnet The end portion corresponding to the notch portion is provided with a trimming edge.

Optionally, the cutting edges on both sides of the notch are parallel to each other.

Optionally, the outer end of the support member is fixed on the magnetic circuit system;

Alternatively, the sounding device further includes a housing, the magnetic circuit system and the vibration assembly are housed and fixed in the housing, and an outer end of the support member is fixed to the housing.

Optionally, a circuit layer is disposed on the support member;

Or the support member is made of a conductive material;

An inner end of the support member is electrically connected to the voice coil, and an outer end of the support member is connected to an external circuit.

Optionally, the center magnetic portion is spaced apart from the voice coil by the distance of 0.2-0.25 mm at the first short straight side.

Optionally, the magnetic circuit system includes a lower magnetic plate, the central magnetic portion and the edge magnetic portion are located above the lower magnetic conductive plate, and the lower magnetic conductive plate is formed with a concave portion, and the supporting member is located Above the recess.

According to an embodiment of the present disclosure, the polarization generated when the vibration assembly operates can be reduced.

Other features and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is an exploded view of a sound emitting device provided by an embodiment of the present invention;

2 is an exploded view of a portion of a sound emitting device provided by an embodiment of the present invention;

Figure 3 is a partial side cross-sectional view of a sound emitting device according to an embodiment of the present invention;

Figure 4 is a plan view of a portion of the components of the sounding device provided by the embodiment of the present invention;

Figure 5 is an exploded view of some of the components of the sounding device provided by an embodiment of the present invention.

detailed description

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention unless otherwise specified.

The following description of the at least one exemplary embodiment is merely illustrative and is in no way

Techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but the techniques, methods and apparatus should be considered as part of the specification, where appropriate.

In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

The invention provides a sounding device which adopts a moving coil type vibration sounding structure. As shown in FIG. 1, the sounding device has a rectangular structure, and the sounding device includes a magnetic circuit system and a vibration assembly.

The magnetic circuit system is for providing a magnetic force as a vibration driving force to the vibration assembly, including the center magnetic portion 11 and the side magnetic portion 12. As shown in FIG. 2, the edge magnetic portion 12 surrounds the center magnetic portion 11, and a magnetic gap is formed between the central magnetic portion 11 and the side magnetic portion 12. The vibration assembly includes a voice coil 21, a diaphragm 22, and Support member 23. A sound signal can be transmitted into the voice coil 21, and the voice coil 21 can be driven by an electronic force generated by the magnetic circuit system in the magnetic gap to generate vibration. The voice coil 21 surrounds the center magnetic portion 11 and is located inside the side magnetic portion 12.

The central magnetic portion 11 has a rectangular-like structure as a whole, and the central magnetic portion 11 has two opposite first long sides and two opposite second long sides, and the first long side and the second long side are mutually The proximal end has a first short straight edge 111, as shown in FIG. The first short straight side 111 forms a short straight side on the edge of the central magnetic portion 11. The short straight side formed on the center magnetic portion 11 increases the gap space between the central magnetic portion 11 and the side magnetic portion 12. Correspondingly, the voice coil 21 has a rectangular-like structure as a whole. As shown in FIG. 2, the voice coil 21 includes two opposite third long sides and two opposite fourth long sides, and the third long side is The mutually adjacent ends of the fourth long sides have a second short straight side 211 corresponding to the first short straight sides. There is a second short straight side 211 corresponding to the position and shape of the first short straight side 111 of the central magnetic portion 11. The voice coil 21 is matched with the overall shape of the center magnetic portion 11, so that the force applied from the center magnetic portion 11 by the voice coil 21 is more uniform, and the polarization is suppressed.

Further, the diaphragm 22 is connected to one end surface of the voice coil 21, and the diaphragm 22 can also be connected with other components of the sounding device to suspend the voice coil 21 in the sounding device. The support member 23 is then attached to the other side of the voice coil 21, as shown in FIG. The inner end 231 of the support member is coupled to the second short straight side 211. The support member 23 functions to support and position the voice coil 21 on the lower side of the voice coil 21, thereby suppressing polarization which may occur when the voice coil 21 vibrates up and down.

In particular, the number of the support members is less than or equal to the number of first short straight sides on the central magnetic portion. The support member is coupled to the second short straight side 211 of the voice coil. The second short straight side 211 on the voice coil has a linear configuration, which provides a more and more stable connection area for the connection of the support members. The support member is connected to the second short straight side 211 of the voice coil to improve the connection reliability between the support and the voice coil, thereby further improving the support of the support member to the voice coil and suppressing the polarization.

The present invention forms a short straight side on the central magnetic portion and is provided with a voice coil that matches the shape thereof. Further, a support member connected at the second short straight side of the voice coil is provided. Through the above improvements, the vibration environment of the voice coil is comprehensively improved from the aspects of the magnetic circuit, the voice coil, and the structure of the support member, thereby weakening the polarization and sway phenomenon that the voice coil may generate under a large amplitude working environment. On the other hand, the acoustic performance of the sounding device can also be improved by the above-described improvement for the polarization problem. The central magnetic portion having the first short straight side is larger than the conventional central magnetic portion with a space between the side magnetic portions. The structural feature increases the magnetic circuit space, thereby reducing the acoustic resistance of the magnetic circuit, improving the Q value (quality factor) of the sounding device, and improving the acoustic performance.

The present invention does not limit the connection form of the inner end of the support member to the second short straight side. Alternatively, the inner end may be fixed on the end surface of the second short straight side; or may be fixed on the side wall of the second short straight side.

Optionally, the support member further includes an outer end for fixing in the sounding device, and an elastic portion is further connected between the outer end and the inner end. The elastic portion has a certain elastic deformation capability. When the voice coil is vibrating, the elastic portion is elastically connected between the outer end and the inner end of the support member, so that the outer end can vibrate with the voice coil.

Alternatively, the present invention provides several alternative embodiments for the structural shape of the resilient portion. In an alternative manner, the elastic portion is a strip structure extending in an S-shape. The S-shaped strip structure provides a larger floating space and the traction force for the voice coil is relatively small.

The elastic portion may also be a sheet-like curved convex structure extending from the outer end of the support member toward the inner end 231, as shown in Figs. 1, 3, which is similar to the folded ring structure of the diaphragm. The convex direction of the sheet-like curved convex structure may be a direction toward the diaphragm or a direction away from the diaphragm. The elastic portion of this embodiment can provide a greater traction force and a certain limiting effect on the vibration of the floating portion and the voice coil. Moreover, it is easier to arrange the circuit in such an elastic portion.

Alternatively, the elastic portion may also be a sheet-like wavy structure extending from the outer end to the inner end. Its structural form is similar to the continuous folding ring and reverse folding ring structure on the diaphragm.

Optionally, in an embodiment of the invention, the central magnetic portion has one or two pairs of first short straight sides. Two of the first short straight sides of each pair are symmetrically distributed centrally with respect to the center of the central magnetic portion. In the embodiment shown in FIGS. 1 and 2, the central magnetic portion 11 has two pairs of first short straight sides 111. A pair of first short straight sides 111 symmetrically distributed in the center enables the magnetic field formed by the central magnetic portion 11 to be more uniform. Moreover, the voice coil is formed with a second short straight side 211 at a position corresponding to the first short straight side 111, and the second short straight side 211 is also symmetrically distributed with respect to the voice coil. The weight of the voice coil itself is more uniform and balanced. .

The invention does not limit that the first short straight sides on the central magnetic portion must be symmetrically distributed in a center in pairs. An advantage of the above alternative embodiment is that the generated magnetic field is symmetrical, uniform, and the voice coil is more balanced. However, depending on the actual application, it may be that the central magnetic portion has a first short straight edge at any position. For example, at one side edge of the central magnetic portion, two relatively short straight sides are disposed, and on the other side of the central magnetic portion, there is no first short straight side. This design method can cope with the application environment of the voice coil itself to easily generate polarization in a specific area, and this design method suppresses the polarization phenomenon of the specific area. The first short straight side may also be distributed on the central magnetic portion in other positions, which is not limited by the present invention.

In an optional embodiment, as shown in FIGS. 1, 2, and 4, the central magnetic portion 11 has a rectangular-like structure, and the first short straight side 111 is located at a corner position of the central magnetic portion 11. . Accordingly, the voice coil 21 also has a rectangular-like structure. In the present invention, the rectangular-like structure refers to a shape in which the central magnetic portion 11 and the voice coil 21 have a nearly rectangular shape in a plan view, and only has a first short straight side 111 or a second short straight side 211 in a small portion. Thereby forming a slightly different local shape characteristic from the rectangle. For example, the central magnetic portion 11 shown in FIG. 2 has four pairs of first short straight sides 111 on the central magnetic portion 11, which have an octagonal shape in a plan view, and the first short straight sides 111 have four right angles of a rectangle. The corners are removed to form a short, slanted short straight edge. The invention does not limit that the central magnetic portion has several first short straight sides, which may be two or one or the like.

In another optional embodiment, the central magnetic portion has a square-like structure, and the first short straight side is located at a corner position of the central magnetic portion. Accordingly, the voice coil also has a square structure. The rectangular-like structure refers to a shape in which the central magnetic portion and the voice coil have a plan view structure that approximates a square shape. The central magnetic portion may have two pairs of the first short straight sides, that is, the four corner positions of the central magnetic portion each have a first short straight side, and each of the first short straight sides is opposite to the center The center of the magnetic portion is rotationally symmetrically distributed.

In a preferred embodiment, the number of the support members is the same as the number of first short straight sides of the central magnetic portion. Correspondingly, each of the second short straight sides corresponding to the first short straight side is connected with a support member. In this embodiment, the second short straight side formed on the voice coil corresponding to the first short straight side of the central magnetic portion is utilized. The second short straight edge can provide a sufficient connection space for the support member, and a support member is connected to each of the second short straight sides, thereby integrally supporting the voice coil with the support member. 1 and 5 show such an embodiment, the voice coil 21 is formed with a second short straight side 211 at four corner positions, each of the second short straight sides 211 and one of the support members 23 Terminals 231 are connected. The evenly distributed four support members 23 can lift the voice coil 21, thereby suppressing the polarization phenomenon that may occur when the voice coil 21 operates.

Preferably, the inner ends 231 of the two adjacent support members are connected to each other. Thus, the inner ends 231 of the four support members are sequentially connected to each other such that the four support members constitute an annular structure. The inner ends 231 that are connected together can be attached to the voice coil as a whole, and the supporting effect of the support members on the voice coil is enhanced.

The present invention does not limit the provision of a support member to the first short straight side of each central magnetic portion and the second short straight side of the voice coil. In the case of practical application, for example, if the voice coil needs to suppress polarization only in a partial area, the support member may be connected only on the second short straight side in the area, or only in the area and the area symmetrical with the area. The support member is connected to the second short straight side.

Further, the present invention also improves the local separation distance between the voice coil and the central magnetic portion by the first short straight side design of the central magnetic portion. Preferably, the central magnetic portion is spaced apart from the voice coil by the distance of 0.2-0.25 mm at the first short straight side. By designing the first short straight side, the spacing between the voice coil and the central magnetic portion can be appropriately increased with respect to the existing sounding device. Thus, on the one hand, the possibility of collision between the voice coil and the central magnetic portion is reduced; on the other hand, the sound resistance in the magnetic circuit system can be reduced, the acoustic performance of the sounding device can be improved, and the Q value can be improved.

Optionally, the magnetic circuit system may further include a lower magnetic conductive plate capable of aggregating and gathering the magnetic field generated by the central magnetic portion and the side magnetic portion, thereby enhancing the central magnetic portion and the side The strength and uniformity of the magnetic gap between the magnetic portions. The central magnetic portion and the edge magnetic portion are disposed above the lower magnetic conductive plate. Preferably, as shown in FIGS. 1 , 3 and 4 , the lower magnetic conductive plate 13 may be formed with a recess 131 , and the recess 131 is located below the support member 23 . The recessed portion 131 is for escaping the support member 23 to prevent the support member 23 from colliding with the lower magnetic conductive plate 13 when the voice coil 21 vibrates. The recessed portion 131 may be formed at a position where the support member 23 is provided, or may be evenly distributed at a position where the support member 23 may be provided. The present invention does not limit the position and number of the depressed portions 131 on the lower magnetic conductive plate 13. It can be configured according to the structural requirements of the actual product. Further, by forming the depressed portion on the lower magnetic conductive plate, it is also possible to increase the space in the magnetic circuit system, thereby reducing the acoustic resistance of the magnetic circuit system, improving the Q value of the sounding device, and improving the acoustic performance.

Preferably, the side magnetic portion is formed with a notch portion formed at a position corresponding to a short straight side of the center magnetic portion. The notch portion extends from the inner side of the side magnetic portion to the outer periphery. In the embodiment shown in Figures 1, 2, and 4, the edge magnetic portion 12 includes four side magnets. The space left between the ends of the adjacent two side magnets is the notch portion 121. A trimming edge is provided at an end portion of the side magnet corresponding to the notch portion, as shown in FIG. Optionally, the cutting edges on both sides of the notch portion are parallel to each other, and the extending direction of the cutting edge is preferably approximately perpendicular to the first short straight side 111 and the second short straight side 211. This design makes it possible to more efficiently accommodate the notch portion 121 in the support member 23.

In other embodiments, the edge magnetic portion may be an integral annular magnetic conductive member that defines a notch portion at a position corresponding to a short straight side of the central magnetic portion 11. The present invention does not limit the specific structural form of the edge magnetic portion and the manner in which the notch portion is formed. On the one hand, the notch can leave a sufficient installation space for the support member, prevent the support member from colliding with the edge magnetic portion, or press the assembly space of the other side. On the other hand, the notch portion increases the space in the magnetic circuit system, and can effectively reduce the sound generation resistance in the magnetic circuit system. In particular, when the notch portion extends from the inner side of the side magnetic portion to the outer side of the side magnetic portion, the effect of reducing the acoustic resistance is most remarkable.

Optionally, as shown in FIG. 1 and FIG. 3, the diaphragm 22 has a central portion and a folded portion, the folded portion surrounds the central portion, and the voice coil 21 is connected to the central portion. . When the voice coil 21 vibrates, the center portion vibrates together with the voice coil 21, and the folded portion is deformed to provide vibration conditions for the center portion and the voice coil 21. The support member 23 has an inner end 231 and a short folding ring, and the inner end 231 is connected to the voice coil 21, and the short folding ring is located outside the voice coil 21. The inner end 231 of the support member 23 vibrates together with the voice coil 21, and the short fold ring can be deformed to play the role of connecting and supporting the voice coil 21. The diaphragm 22 and the outer end of the support member 23 may be fixedly attached to other components in the sounding device.

Optionally, the magnetic circuit system is fixedly disposed in the sounding device, which can be used to carry the diaphragm and the support member. The outer end of the support member may be fixed to the magnetic circuit system. For example, the outer end of the support portion is attached to the inner edge of the side magnetic circuit.

In a preferred embodiment, the vibration assembly further includes a centering piece, as shown in FIG. 5, the centering piece has inner and outer rings connected to each other, and the inner ring can be opposite to the outer The circle floats up and down. The inner ring forms a connection with the voice coil 21, which in turn forms a fixed connection with other components on the sounding device. The centering piece can provide support to the voice coil 21, balance vibration, and guide the direction of vibration. The centering piece and the support member 23 collectively suppress the polarization of the voice coil 21, and it is possible to more effectively prevent the voice coil 21 from being polarized and swayed under large amplitude operating conditions.

Optionally, the magnetic circuit system may further include a central magnetic conductive plate and an edge magnetic conductive plate. The central magnetic conductive plate is disposed on the central magnetic portion, and the side magnetic conductive plate is disposed on the side magnetic portion. The central magnetic conductive plate and the side magnetic conductive plate can aggregate and close the magnetic field of the magnetic circuit system, and improve the intensity and uniformity of the magnetic field in the magnetic gap. Preferably, the shape of the central magnetic conductive plate and the side magnetic conductive plate may be identical to the shapes of the central magnetic portion and the edge magnetic portion, respectively. Through this design, it is possible to effectively avoid the collision between the voice coil and the magnetic circuit system, reduce the polarization generated by the voice coil, and reduce the sound resistance of the magnetic circuit system.

Further, the present invention does not limit the specific formation of the central magnetic portion and the side magnetic portion. For example, in the embodiment shown in FIG. 1, the central magnetic portion 11 may be a central magnet, and the magnetic portion 12 may be a four-sided magnet. In other embodiments, the central magnetic portion may be a central magnet, and the edge magnetic portion may be formed by a sidewall formed by bending upward from the lower magnetic conductive plate; or, the central magnetic portion is formed by a T-shaped magnet. The edge magnetic portion is formed by a ring-shaped magnetic conductive member that is sleeved on the T-shaped magnet.

Optionally, the sounding device may further include a housing 3, as shown in FIGS. The housing 3 is configured to carry the vibration assembly and magnetic circuit system. The magnetic circuit system can be fixedly mounted on the casing 3, and a peripheral edge of the diaphragm 22 is fixedly connected to the casing 3. Further, the outer end of the support member may also be fixedly coupled to the housing 3.

Alternatively, the support member may also cooperate to complete the electrical connection of the voice coil to an external circuit. For example, the support member may be provided with a circuit layer; or the support member may be directly made of a conductive material. The voice coil is in electrical connection with the inner end of the support member, and the outer end of the support member is electrically connected to an external circuit.

In an alternative embodiment, the support member is made of a flexible circuit board. The voice coil is soldered to the pad on the inner end of the support member by the lead end of the lead. The pad at the outer end of the support member is electrically connected to the outer pad provided on the sounding device.

While the invention has been described in detail with reference to the preferred embodiments of the present invention, it is understood that It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

A sounding device, wherein the sounding device has a rectangular structure, and includes:

a magnetic circuit system, the magnetic circuit system comprising a central magnetic portion and an edge magnetic portion, the central magnetic portion having two opposite first long sides and two opposite second long sides, the first long side and the The mutually adjacent ends of the second long side have a first short straight side, and the edge magnetic portion surrounds the central magnetic portion;

a vibration assembly including a voice coil, a diaphragm, and a support member;

The voice coil surrounds the central magnetic portion, the voice coil includes two opposite third long sides and opposite two fourth long sides, the third long side and the fourth long side The mutually adjacent ends have a second short straight edge corresponding to the first short straight edge;

The diaphragm is coupled to one end surface of the voice coil, the support member is coupled to the other side of the voice coil, and an inner end of the support member is coupled to the second short straight side.
The sounding device according to claim 1, wherein an inner end of the support member is fixed on an end surface of the second short straight side;

Alternatively, the inner end of the support member is fixed to the side wall of the second short straight side.
The sounding device according to claim 2, wherein said support member further comprises an outer end for fixing, and an elastic portion connected between said inner end and said outer end.
The sounding device according to claim 3, wherein the elastic portion is a sheet-like arcuate convex structure, and a convex direction of the curved convex structure faces the diaphragm or is away from the diaphragm .
The sounding device according to claim 3, wherein the elastic portion is a sheet-like wave-shaped structure;

Alternatively, the elastic portion is a strip structure extending in an S-shape.
The sounding device according to claim 2, wherein the sounding device is provided with four of the support members, and the four support members are respectively in one-to-one correspondence with the four second short straight sides.
The sounding device according to claim 6, wherein the inner ends of the adjacent support members are connected to each other, and the four support members constitute an annular structure.
The sounding device according to claim 1, wherein the side magnetic portion includes four side magnets, and an end portion of two adjacent side magnets has a notch portion therebetween, and the supporting member is accommodated In the notch portion, an end portion of the side magnet corresponding to the notch portion is provided with a trimming edge.
The sounding device according to claim 8, wherein the cut edges on both sides of the notch portion are parallel to each other.
The sound emitting device according to claim 3, wherein the outer end of the support member is fixed to the magnetic circuit system;

Alternatively, the sounding device further includes a housing, the magnetic circuit system and the vibration assembly are housed and fixed in the housing, and an outer end of the support member is fixed to the housing.
The sounding device according to claim 3, wherein the support member is provided with a circuit layer thereon;

Or the support member is made of a conductive material;

An inner end of the support member is electrically connected to the voice coil, and an outer end of the support member is connected to an external circuit.
The sounding device according to claim 1, wherein said central magnetic portion is spaced apart from said voice coil by a distance of 0.2 to 0.25 mm at said first short straight side.
The sounding device according to claim 1, wherein said magnetic circuit system comprises a lower magnetic plate, said central magnetic portion and said magnetic portion being located above said lower magnetic plate, said lower magnetic plate A recess is formed, and the support member is located above the recess.