CN113079442B

CN113079442B - Sounding device

Info

Publication number: CN113079442B
Application number: CN202010011084.4A
Authority: CN
Inventors: 刘春发; 杨健斌; 郭晓冬; 刘光磊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2023-12-22
Anticipated expiration: 2040-01-06
Also published as: CN113079442A

Abstract

The invention discloses a sound generating device. The sound generating device comprises a shell, wherein the shell is provided with an accommodating space, and a magnetic circuit system and a vibration assembly are arranged in the accommodating space; a magnetic gap and an avoiding part which is communicated with the magnetic gap and the outside of the magnetic circuit system are formed on the magnetic circuit system; the vibration assembly comprises a coil and an elastic component which is connected with the coil in a matching way, wherein the coil comprises a coil body and a framework, and the coil body is wound outside the framework; the coil is suspended in a magnetic gap formed by the magnetic circuit system; the elastic component adopts single strand or stranded wire coiling to form, the elastic component with the fixed first connecting portion of coil, with the fixed second connecting portion of casing and connect the first connecting portion with deformation portion between the second connecting portion, deformation portion comprises one or more planar structure, and certainly dodge the portion and wear out.

Description

Sounding device

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sound generating device and an electronic terminal.

Background

The large loudspeaker is used as a traditional electroacoustic conversion device and is widely applied to the fields of consumer electronics, automobile electronics and the like. Along with the continuous progress and innovation of the technology, the structural design of the traditional large loudspeaker is also continuously required to be new and changed, so that on one hand, the development trend of thinning is required to be met, on the other hand, the optimization of performance is required to be more focused, and of course, the simplification of the process and the control of the cost are also required to be simultaneously considered.

Among the prior art, the vibration subassembly of big speaker product includes the skeleton and winds the enameled wire coil of establishing in the outside, and enameled wire coil receives outside signal of telecommunication often to rely on two or more that set up alone and the silk thread of enameled wire material difference to realize. In order to prevent coil polarization, most of the large loudspeaker vibration assemblies are supported by arranging elastic waves with corrugated structures, so that the centering function is realized. Although the present design can simultaneously meet the demands of centering and conducting, as the centering and conducting functions are realized by two completely different components, a plurality of problems still exist to be solved:

1. the nylon wire is positioned above the elastic wave to be outgoing line, so that the vertical space in the cavity of the large loudspeaker is occupied, and the thinning of the product is not facilitated; 2. the existing elastic wave materials are mostly fibers or blended materials, the elastic components of the structure and the materials occupy larger space in the height direction of the sound generating device, and are limited by the materials, so that Kms (mechanical stiffness) of the elastic components are very small, and when the vibration displacement of the sound generating device is large, the compliance provided by the elastic components is poor, and the F0 of a monomer is very difficult to reduce. 3. The existing elastic wave material is easily affected by environmental changes, for example, the elastic wave material is easy to deform under high-temperature and high-humidity environments, the hardness of the elastic wave material is changed, and the fatigue resistance of the elastic wave material is poor. 4. The elastic wave forming process is complex.

Compared with a miniature sound generating device, the large loudspeaker product has larger product size and larger space in the cavity, and provides a relatively sufficient design space for a method for solving the technical problems.

Disclosure of Invention

It is an object of the present invention to provide a sound emitting device.

According to a first aspect of the present invention, a sound generating apparatus is provided.

The sound generating device comprises a shell, wherein the shell is provided with an accommodating space, and a magnetic circuit system and a vibration assembly are arranged in the accommodating space;

a magnetic gap and an avoiding part which is communicated with the magnetic gap and the outside of the magnetic circuit system are formed on the magnetic circuit system;

the vibration component comprises a coil and an elastic component which is matched and connected with the coil, wherein,

the coil comprises a coil body and a framework, wherein the coil body is wound outside the framework; the coil is suspended in a magnetic gap formed by the magnetic circuit system;

the elastic component adopts single strand or stranded wire coiling to form, the elastic component with the fixed first connecting portion of coil, with the fixed second connecting portion of casing and connect the first connecting portion with deformation portion between the second connecting portion, deformation portion comprises one or more planar structure, and certainly dodge the portion and wear out.

Optionally, the elastic component is a linear structure formed by winding at least two wires which are connected in parallel and side by side into a whole, or is a linear structure formed by winding at least two wires which are mutually wound and interwoven into a whole.

Optionally, the elastic component and the first connecting portion and/or the second connecting portion are located on the same plane.

Optionally, the elastic component is electrically connected with the coil body, and the elastic component is configured to transmit an electrical signal to the coil body.

Optionally, the first connection portion of the elastic member is connected to a side surface of the coil body near an end surface thereof, so that the elastic member is in electrical communication with the coil.

Optionally, a first bonding pad is arranged at a connection part of the side surface of the coil body corresponding to the first connection part;

and the coil body is extended with an enameled wire for electric signal transmission, and the first bonding pad is welded and fixed with the enameled wire and the first connecting part respectively, so that the elastic part is electrically communicated with the coil body.

Optionally, the first connecting portion of the elastic component is connected to a side surface of the skeleton, a second bonding pad is arranged at a connecting position of the side surface of the skeleton corresponding to the first connecting portion, and the elastic component is in electrical communication with the coil through the second bonding pad.

Optionally, the end portion of the first connecting portion extends in an S-shaped bending towards the second connecting portion to form the deformation portion, and the direction of the S-shaped bending extends is consistent with the direction from the first connecting portion to the second connecting portion.

Optionally, the width of the deformation part gradually increases from the first connection part to the second connection part, and the extension lines of the two sides of the deformation part in the width direction intersect at a point in the direction of the first connection part away from the second connection part to form an acute angle; or,

the width of the deformation part gradually decreases from the first connection part to the second connection part, and the extending lines of the two sides of the width direction of the deformation part intersect at a point in the direction of the second connection part away from the first connection part to form an acute angle.

Optionally, each time a bending track is formed in the deformation part, the distance between two adjacent bending tracks is equal; or the distance between two adjacent bending channels is gradually reduced from the first connecting part to the second connecting part; or the distance between two adjacent bending channels gradually increases from the first connecting part to the second connecting part.

Optionally, each time a bending track is formed in the deformation part, the end parts of two adjacent bending tracks are connected by an arc line segment, and the diameter of the arc line segment is equal to the distance between the two adjacent bending tracks; or the diameter of the arc line segment is larger than the distance between two adjacent corresponding bending tracks.

Optionally, the end portion of the first connecting portion extends in an S-shaped bending manner towards the second connecting portion to form the deformation portion, and the direction of the S-shaped bending extension is perpendicular to the direction from the first connecting portion to the second connecting portion.

Optionally, the end portion of the first connecting portion is bent and extended in a spiral shape toward the second connecting portion to form the deformation portion.

Optionally, the first connecting portion is provided with two and the second connecting portion is provided with one, two adjacent one end of the first connecting portion is S-shaped bending extension towards the second connecting portion to form two deformation portions respectively, the direction of S-shaped bending extension is consistent with the direction from the first connecting portion to the second connecting portion, and two deformation portions are separated and one end far away from the first connecting portion is bent and intersected to form a hook structure to form the second connecting portion.

Optionally, the second connecting part is in a plane hook shape, or the second connecting part is in a spiral structure perpendicular to the plane where the deformation part is located;

the shell is provided with a fixed column, and the second connecting part is sleeved on the fixed column.

Optionally, the elastic component is of two split structures symmetrically arranged at two sides of the coil body; or the elastic component is of a three-piece or four-piece split structure which is uniformly distributed in the circumferential direction of the coil body.

Optionally, the elastic member includes a plurality of first connection portions provided in a circumferential direction of the coil, and at least two adjacent first connection portions of the elastic member are connected together.

Optionally, the magnetic circuit system comprises a magnetic yoke, wherein the magnetic yoke is a basin-shaped U-shaped iron, and a magnet is arranged in the basin of the U-shaped iron;

the avoiding part is a notch arranged on the U-shaped iron.

Optionally, the number of the corresponding notches on the U-shaped iron is consistent with the number of the elastic components on the coil body, and the two sides of the notch form an angle with the center of the U-shaped iron in a range of 20-40 degrees.

Optionally, the sound emitting device is a large bass or midrange sound emitting device.

The invention has the beneficial effects that: the invention provides a sound generating device, wherein an elastic part can play a role in supporting and fixing the position of a coil; and on the other hand, the elastic component is respectively and electrically connected with the coil and the sounding device. Compared with the prior art, the invention reduces the use of the nylon wires and the height of the sound generating device in the vibration direction.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a sound generating device according to the present invention.

Fig. 2 is a schematic structural diagram of a sound generating device according to another angle of the present invention.

Fig. 3 is a schematic structural diagram of the U-iron of the present invention.

Fig. 4 to 10 are schematic structural views of the elastic member of the present invention.

Fig. 11 is a diagram showing the comparison between the height of the sound generating device of the present invention and the height of the existing sound generating device.

Fig. 12 is a graph showing the impedance of the sound emitting device of the present invention and the sound emitting device using the conventional centering pad.

Fig. 13 is a graph showing distortion curves of the sound emitting device of the present invention and the sound emitting device using the conventional centering support in the prior art.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

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

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

According to one embodiment of the present invention, a sound emitting device is provided.

The sound generating device comprises a shell 100, wherein the shell 100 is provided with an accommodating space, and a magnetic circuit system and a vibration assembly are arranged in the accommodating space;

a magnetic gap is formed on the magnetic circuit system, and an avoidance portion 1021 is communicated with the magnetic gap and the outside of the magnetic circuit system;

the vibration assembly comprises a coil 105 and an elastic member 101 cooperatively connected with the coil, wherein,

the coil 105 comprises a coil body and a framework, wherein the coil body is wound outside the framework; the coil is suspended in a magnetic gap formed by the magnetic circuit system;

the elastic member 101 is formed by winding a single or multi-strand wire, and the elastic member 101 has a first connection portion 1011 fixed to the coil, a second connection portion 1013 fixed to the housing, and a deformation portion 1012 connecting between the first connection portion 1011 and the second connection portion 1013, wherein the deformation portion 1012 is formed of one or more planar structures and is penetrated from the escape portion.

The invention provides a sound generating device, wherein an elastic part 101 can play a role in supporting and fixing the position of a coil; on the other hand, the elastic component 101 is electrically connected with the coil and the sound generating device respectively. Compared with the prior art, the invention reduces the use of the nylon wires and the height of the sound generating device in the vibration direction.

Deformation portion 1012 is planar structure and certainly dodge the portion and wear out, guaranteed the holistic planarization of elastomeric element, works as elastomeric element is applied to among the sound generating mechanism's the direction of vibration can reduce sound generating mechanism's height to realize the design theory of sound generating mechanism miniaturization.

Wherein the metal wire can be any one of copper wire, iron wire, steel wire and alloy wire. The elastic part 101 is formed by integrally winding metal wires, so that the vibrating diaphragm in the sound generating device can provide better compliance when vibrating under large displacement; in addition, the elastic component 101 is made of a metal material, so that the elastic component is less influenced by high-temperature and high-humidity environments, has excellent fatigue resistance, and can work in severe environments.

In an alternative example, the elastic member 101 is a wire structure wound by a single wire, or the elastic member 101 is a wire structure wound by at least two wires connected in parallel and side by side, or the elastic member 101 is a wire structure wound by at least two wires wound and interwoven together. For example, when the elastic component 101 is a linear structure formed by winding at least two wires which are connected in parallel and side by side and integrally or a linear structure formed by winding and interweaving the wires together and winding the wires integrally, at least the lengths of the two wires can be identical, and when the two wires are wound in the mode to form the elastic component 101, the tensile strength of the elastic component 101 is provided, and the situation that the elastic component 101 breaks and the like in the vibration process of the sound generating device is avoided.

In an alternative example, the elastic member 101 is a wire structure wound with a single wire, and the deformation portion 1012 of the elastic member 101 has a planar structure and is located on the same plane as the first connection portion 1011 and/or the second connection portion 1013. For example, the deformation portion 1012 has a planar structure, and compared with the conventional wave shape in which the centering support is vertically undulating, the present example improves the flatness of the deformation portion 1012, and when the elastic member 101 is applied to the sound generating device, the height of the sound generating device in the vibration direction thereof can be reduced.

For example, when the deformation portion 1012 is located on the same plane as the first connection portion 1011 and/or the second connection portion 1013, the flatness of the whole elastic member 101 is ensured, and when the elastic member is applied to the sound generating apparatus, the height of the sound generating apparatus can be reduced in the vibration direction of the sound generating apparatus, so as to realize the design concept of light weight of the sound generating apparatus.

For example, when the second connection part 1013 is formed in at least two turns, the orthographic projections of the at least two turns in the vertical direction overlap. In this example, the first connecting portion and the deformation portion are in the same plane, so that the overall flatness of the elastic component is ensured.

In an alternative example, the first connection portion 1011 of the elastic member 101 is connected to a side surface of the coil body near an end surface thereof, so that the elastic member 101 is in electrical communication with the coil. The inventor finds that when the first connecting portion 1011 of the elastic member 101 is connected to the side surface of the coil body near the end surface thereof, that is, the first connecting portion 1011 of the elastic member 101 is connected to the root region of the coil body, compared with the prior art that the centering support is arranged on the coil skeleton, the invention can better provide the axial compliance of the sound generating device and reduce the radial deflection and the swinging vibration; meanwhile, the elastic component is arranged on the side face, close to the end face, of the coil body, so that the space required by a traditional centering support piece is saved, and the height of the sounding device can be reduced.

In an alternative example, a first bonding pad is provided at a connection portion of the side surface of the coil body corresponding to the first connection portion 1011;

Specifically, the first connection portion 1011 of the elastic member is connected to the first pad, and an electrical connection therebetween is formed. And meanwhile, electric connection is formed between the coil body and the first bonding pad, so that electric communication between the elastic component and the coil is formed. For example, an electrical signal received from the outside of the sound emitting device by the elastic member 101 is first transmitted to the first pad, and then transmitted to the enamel wire through the first pad, and further transmitted to the coil body. The coil vibrates under the action of the electric signal and the magnetic field of the magnetic circuit system.

In an alternative example, the first connection portion 1011 of the elastic member 101 is connected to a side of the frame, that is, the first connection portion 1011 is fixedly connected to the frame to connect the elastic member 101 to the coil. For example, a second bonding pad is arranged at the connection part of the side surface of the framework corresponding to the first connection part 1011, and the elastic component 101 is in electrical communication with the coil through the second bonding pad; simultaneously, an enameled wire for conducting electricity is led out from the coil body, and the enameled wire is connected with the second bonding pad to form electric communication; and then electrical communication is established between the elastic member 101 and the coil. The elastic component 101 is connected to the side face of the framework, so that interference between components near the coil body and the elastic component can be avoided, and the elastic component 101 is convenient to install in the sounding device.

The elastic component 101 is used for realizing the electrical communication between the coil and an external circuit through a bonding pad; compared with the prior art, the invention reduces the use of the nylon wires and the height of the sound generating device in the vibration direction. In this example, as shown in fig. 11, the height of the conventional sound generating apparatus 300 in the vibration direction is compared with the height of the sound generating apparatus 200 according to the present invention; as shown in fig. 11, preferably, the elastic member 101 is disposed in a root area of the coil body, and after the first connection portion 1011 of the elastic member 101 is electrically connected to the first pad, the elastic member passes through the avoidance portion 1021 to extend to the housing, and is electrically connected to an external circuit, so that electrical communication between the coil and the external circuit is achieved through the elastic member; the sound generating apparatus 200 of the present invention has a significantly lower height in the direction of vibration than the existing sound generating apparatus 300. Wherein the height of the sound generating apparatus 200 of the present invention in the vibration direction thereof is in the range of 15-20mm, preferably the height of the sound generating apparatus 200 in the vibration direction is 17-19mm. This example makes the sound generating apparatus lighter and smaller.

In an alternative example, referring to fig. 4, 7, 8, and 9, the end of the first connection portion 1011 extends in an S-shaped curve toward the second connection portion 1013 to form the deformation portion 1013, and the direction of the S-shaped curve extends in accordance with the direction from the first connection portion to the second connection portion. This example improves the consistency of the vibration of the elastic member.

In an alternative example, referring to fig. 7 and 8, the width of the deformation part 1013 is gradually increased from the first connection part 1011 to the second connection part 1013, and extension lines of both sides of the deformation part 1013 in the width direction intersect at a point forming an acute angle in the direction in which the first connection part 1011 is away from the second connection part 1013; alternatively, the width of the deformation part 1013 is gradually reduced from the first connection part 1011 to the second connection part 1103, and the extension lines of the two sides of the deformation part 1013 in the width direction intersect at a point in the direction of the second connection part away from the first connection part to form an acute angle. This example facilitates the elastic member 101 to pass out from the escape portion 1021.

In an alternative example, referring to fig. 4, 7 and 8, each time the deformation 1012 is bent, one bending track is formed, and the distance between two adjacent bending tracks is equal; or the distance between two adjacent bending channels is gradually reduced from the first connecting part to the second connecting part; or the distance between two adjacent bending channels gradually increases from the first connecting part to the second connecting part.

For example, as shown in fig. 7, the deformation portion 1012 is in the same plane as the first connection portion 1011, and is bent in an S-shape from one end of the first connection portion 1011, wherein each time the deformation portion 1012 is bent, a bending trace is formed, and the number of times of bending trace is not less than 3; in this example, the distances between two adjacent bending tracks are equal, so that when the elastic component 101 is applied to the sound generating device, the consistency of vibration of the elastic component is improved.

For example, as shown in fig. 4, the deformation portion 1012 is in the same plane as the first connection portion 1011, and is bent in an S-shape from one end of the first connection portion 1011, wherein each time the deformation portion 1012 is bent, a bending trace is formed, and the number of times of bending trace is not less than 3; in this example, the distances between two adjacent bending tracks are not equal, and the distance between two adjacent bending tracks gradually increases or gradually decreases from one end close to the coil body to the extending direction of the second connecting portion. When the distance between two adjacent bending channels gradually increases from one end close to the coil body to the extending direction of the second connecting part, namely, the tightness of the deformation part at one side close to the coil body is greater than that of the deformation part close to the second connecting part. The inventor finds that the greater the tightness degree of the deformation part is, the lower the mechanical progress of the elastic part is, and the better the linear performance of the elastic part is, so that the consistency of vibration of the sound generating device can be improved and the acoustic performance of the sound generating device can be improved when the elastic part is applied to the sound generating device.

In an alternative example, referring to fig. 4, 7, 8, and 9, each time a deformed portion 1012 is bent, one bending track is formed between the ends of two adjacent bending tracks, and the ends of two adjacent bending tracks are connected by an arc line segment, where the diameter of the arc line segment is equal to the distance between the two corresponding adjacent bending tracks; or the diameter of the arc line segment is larger than the distance between two adjacent corresponding bending tracks.

For example, referring to fig. 7 and 8, each time the deformation portion 1012 is bent, one bending channel is formed, the ends of two adjacent bending channels are connected by an arc line segment, the diameter of the arc line segment is equal to the distance between the two corresponding adjacent bending channels, in this example, the distance between the two adjacent bending channels is equal, when the elastic member 101 is elastically deformed, the distance between the two connected bending channels can be ensured to be uniform, and the consistency of vibration of the elastic member 101 is improved.

For example, referring to fig. 9, each time the deformation 1012 is bent, one bending channel is formed, the ends of two adjacent bending channels are connected by a circular arc line segment, and the diameter of the circular arc line segment is larger than the distance between the two adjacent bending channels. The interval that makes adjacent two middle parts of buckling way is less than adjacent two middle part of buckling way both ends in this example, and the inseparable degree of deformation portion can be improved to structural design of this example, and the inseparable degree of deformation portion is bigger, and elastomeric element's mechanics progress reduces, and elastomeric element's linear expression is better, in being applied to sound generating apparatus, can improve sound generating apparatus vibration's uniformity, promotes sound generating apparatus's acoustic properties.

In an alternative example, referring to fig. 10, the end portion of the first connection portion 1011 extends in an S-shaped curve toward the second connection portion 1013 to form the deformation portion 1013, and the S-shaped curve extends in a direction perpendicular to a direction from the first connection portion to the second connection portion. In this example, the extending ends of the first connecting portion 1011 and the second connecting portion 1013 are located on both sides of the deformation portion 1012. This example reduces the overall length of the elastic member 101.

In an alternative example, the end of the first connection portion 1011 is spirally bent toward the second connection portion 1013 to form the deformation portion 1012.

For example, as shown in fig. 6, the deformation portion 1012 and the first connection portion 1011 are located on the same plane, wherein the deformation portion is continuously bent in a spiral shape from one end of the first connection portion 1011, wherein each time the deformation portion is bent, a semi-annular structure is formed, and two adjacent semi-annular structures are connected by using an S-shaped connection section. The distances between two adjacent bending tracks in this example are equal.

In an alternative example, two first connecting portions 1011 are provided and one second connecting portion 1013 is provided, two adjacent ends of the first connecting portions are bent and extended in an S-shape toward the second connecting portion 1013 to form two deformed portions, respectively, the S-shape extends in a direction consistent with a direction from the first connecting portion to the second connecting portion, and two deformed portions are separated and one end far from the first connecting portion is bent and intersected into a hook structure to form the second connecting portion.

For example, as shown in fig. 5, the elastic member 101 includes two first connection portions, which are a first connection portion 1011a and a first connection portion 1011b, respectively, wherein the first connection portion 1011a is bent in an S-shape from one end thereof, and each time the deformation portion 1012a is bent, one bending path is formed, wherein the number of times of bending the path is not less than 3; in this example, the distances between two adjacent bending tracks are equal; starting from one end of the first connecting portion 1011b, bending in an S-shape, wherein each time the deformation portion 1012b is bent, one bending trace is formed, wherein the number of bending traces is not less than 3; in this example, the distances between two adjacent bending paths are equal. In this example, the deformation portion is in the same plane as the first connection portion.

In an alternative example, the second connection part 1013 has a hook shape of a plane, or the second connection part 1013 has a spiral structure perpendicular to the plane of the deformation part;

the sound generating device is provided with a fixing column 103, and the second connecting part 1013 is sleeved on the fixing column 103.

For example, as shown in fig. 4 and 6, the second connection part 1013 is in a planar hook shape, wherein a fixing post is provided on the sound generating device, for example, the fixing post may be formed on a housing of the sound generating device, wherein the second connection part 1013 in a planar hook shape is sleeved on the fixing post, so that the connection firmness and reliability of the elastic component and the sound generating device are improved. The first connecting part 1011, the deformation part 1012 and the second connecting part 1013 are positioned on the same plane, so that the flatness of the elastic component is improved.

For example, as shown in fig. 5, the second connection part 1013 has a spiral structure perpendicular to the plane of the deformation part, wherein a first end of the spiral structure is fixedly connected to the deformation part 1012a, and a second end of the spiral structure is fixedly connected to the deformation part 1012 b. The first connecting portion 1011 and the deformation portion 1012 are in the same plane, so that the flatness of the elastic member itself is improved.

In an alternative example, the elastic member 101 is a two-piece split structure symmetrically disposed at both sides of the coil; alternatively, the elastic member 101 may have a three-piece or four-piece split structure uniformly distributed in the circumferential direction of the coil. Referring to fig. 1 and 2, four elastic members 101 are uniformly distributed in the circumferential direction of the bottom side wall of the coil body. The elastic components 101 are arranged in a symmetrical mode or an array mode, so that a good supporting effect can be achieved on the position fixing of the coils.

In an alternative example, the elastic member 101 includes a plurality of first connection portions 1011 provided in the circumferential direction of the coil, and adjacent at least two of the elastic members 101 are connected together. For example, the elastic member 101 may be a unitary structure, where the unitary structure is specifically: the two split elastic components are fixedly connected through a connecting bridge, wherein the connecting bridge can be of an arc-shaped structure or of a fold line-shaped structure. For example, when the elastic member of the one-piece structure is applied to a sound generating device in which two elastic members of the one-piece structure are provided on a coil body. The connecting bridge is fixed on the side wall of the coil body in a welding mode, so that the connection stability of the elastic component and the coil body is improved.

In an alternative example, referring to fig. 3, the magnetic circuit system includes a magnetic yoke, where the magnetic yoke 102 is a basin-shaped U-shaped iron, and a magnet is disposed in a basin of the U-shaped iron;

the avoiding portion 1021 is a notch formed in the U-shaped iron.

The elastic member 101 is configured to be able to be connected to a side surface of the coil body near a bottom end surface thereof through the notch 1021. That is, the notch 1021 formed in the U-shaped iron 102 forms an avoiding space, so that the elastic component 101 can generate vibration along the vibration direction of the sound generating device.

Wherein, the two sides of the notch and the center of the U iron form an angle ranging from 20 degrees to 40 degrees. Preferably, the angular range is 30 °. Wherein in this breach angle range, can guarantee the vibration space of elastic component to do not influence sound generating set's vibration frequency and sound generating set's acoustic performance.

Optionally, the number of the corresponding notches on the U iron is consistent with the number of the greedy elastic components on the coil body. In this example, the elastic component is a four-piece split structure uniformly distributed in the circumferential direction of the coil body, wherein four notches are correspondingly arranged on the U iron.

In an alternative example, the deformation portion 1012 is outwardly diffused in the direction of the second connection portion 1013 along the first connection portion 1011, and the deformation portion 1012 forms a diffusion angle not less than 10 °. The inventors found that as the diffusion angle increases, the mechanical stiffness value of the elastic member decreases, and the mechanical stiffness linearity of the elastic member becomes good. For example, the mechanical stiffness of the elastic member is in the range of 0.2 to 2N/mm, preferably the mechanical stiffness of the elastic member is 0.56N/mm. In the mechanical stiffness range, the elastic component has better performance and plays a good supporting role in fixing the coil position.

In an alternative example, referring to FIG. 11, curve b represents the impedance curve of a prior art sound emitting device employing a conventional centering clip; curve c represents the impedance curve of the sound emitting device of the present invention.

The resonant frequency F0 of the sound generating device is 50-300 Hz, and preferably the resonant frequency F0 is 170Hz. When the traditional centering support is used, the resonant frequency F0 of the sound generating device is 195Hz. Therefore, when the elastic component is applied to the sound generating device, the sound generating device has good low-frequency response and medium-frequency response, and the acoustic performance of the sound generating device is improved; the sound generating device may be a large bass sound generating device or a midrange sound generating device, and may be a circular sound generating device as shown in the above embodiment, or may be a square sound generating device.

Meanwhile, the elastic component is applied to the sound generating device, so that the total harmonic distortion THD of the sound generating device can be reduced, and the acoustic performance of the sound generating device is improved. Specifically, as shown in fig. 12, the abscissa represents the vibration frequency, and the ordinate represents the total harmonic distortion THD; curve b represents the total harmonic distortion THD of the sound generating device to which the conventional centering clip is applied, and curve c represents the total harmonic distortion THD of the sound generating device to which the elastic member of the present invention is applied.

For example, in the frequency range of 100-300Hz, the total harmonic distortion THD of the sound generating device is less than 10%; specifically, when the frequency is 100Hz, the total harmonic distortion THD of the sound generating device is less than 10%; when the frequency is 200Hz, the total harmonic distortion THD of the sound generating device is less than 2.5%; when the frequency is 300Hz, the total harmonic distortion THD of the sound generating device is less than 2%;

when only the traditional centering support sheet is arranged in the sound generating device, the total harmonic distortion THD of the traditional sound generating device is less than 16%; specifically, when the frequency is 100Hz, the total harmonic distortion THD of the sound generating device is less than 16%; when the frequency is 200Hz, the total harmonic distortion THD of the sound generating device is less than 5%; when the frequency is 300Hz, the total harmonic distortion THD of the sound generating device is less than 2.5%;

the sound generating device in this example has good acoustic properties.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The sound generating device is characterized by comprising a shell, wherein the shell is provided with an accommodating space, and a magnetic circuit system and a vibration assembly are arranged in the accommodating space;

the elastic component adopts stranded wire coiling to form, the elastic component with the fixed first connecting portion of coil, with the fixed second connecting portion of casing and connect the first connecting portion with deformation portion between the second connecting portion, deformation portion comprises one or more planar structure, and certainly dodge the portion and wear out.

2. The sound generating apparatus according to claim 1, wherein the elastic member is a wire-like structure formed by winding at least two wires connected in parallel side by side, or is a wire-like structure formed by winding at least two wires wound together and interwoven.

3. The sound emitting apparatus of claim 1, wherein the elastic member is located on the same plane as the first connection portion and/or the second connection portion.

4. The sound emitting device of claim 1, wherein the elastic member is electrically connected to the coil body, the elastic member configured to transmit an electrical signal to the coil body.

5. The sound emitting apparatus of claim 4 wherein the first connection portion of the resilient member is connected to a side of the coil body proximate an end thereof such that the resilient member is in electrical communication with the coil.

6. The sound generating apparatus according to claim 5, wherein a first bonding pad is provided at a junction of the side surface of the coil body corresponding to the first connecting portion;

7. The sound generating apparatus according to claim 4, wherein the first connection portion of the elastic member is connected to a side surface of the skeleton, a second bonding pad is provided at a connection portion of the side surface of the skeleton corresponding to the first connection portion, and the elastic member is in electrical communication with the coil through the second bonding pad.

8. The sound emitting apparatus of claim 1, wherein the sound emitting apparatus comprises,

the end part of the first connecting part extends towards the second connecting part in an S-shaped bending mode to form the deformation part, and the direction of the S-shaped bending extending is consistent with the direction from the first connecting part to the second connecting part.

9. The sound generating apparatus according to claim 8, wherein the width of the deformation portion gradually increases from the first connecting portion to the second connecting portion, and extension lines of both sides in the width direction of the deformation portion intersect at a point forming an acute angle in a direction in which the first connecting portion is away from the second connecting portion; or,

10. The sound generating apparatus according to claim 8 or 9, wherein each time the deformation portion is bent, the deformation portion is provided with one bending channel, and the distances between two adjacent bending channels are equal; or the distance between two adjacent bending channels is gradually reduced from the first connecting part to the second connecting part; or the distance between two adjacent bending channels gradually increases from the first connecting part to the second connecting part.

11. The sound generating apparatus according to claim 8 or 9, wherein each time a bending path is formed in the deformation portion, ends of two adjacent bending paths are connected by an arc line segment, and a diameter of the arc line segment is equal to a distance between the two corresponding adjacent bending paths; or the diameter of the arc line segment is larger than the distance between two adjacent corresponding bending tracks.

12. The sound generating apparatus according to claim 1, wherein the end portion of the first connecting portion extends in an S-shaped curve toward the second connecting portion to form the deformed portion, and the direction of the S-shaped curve extending is perpendicular to the direction from the first connecting portion to the second connecting portion.

13. The sound generating apparatus according to claim 1, wherein an end portion of the first connecting portion is spirally bent and extended toward the second connecting portion to form the deformed portion.

14. The sound generating apparatus according to claim 1, wherein two first connecting portions are provided and one second connecting portion is provided, two adjacent ends of the first connecting portions are bent and extended in an S-shape toward the second connecting portion to form two deformed portions respectively, the direction of the S-shape bending and extending is consistent with the direction from the first connecting portion to the second connecting portion, and two deformed portions are separated and bent and intersected into a hook structure at one end far away from the first connecting portion to form the second connecting portion.

15. The sound generating apparatus according to claim 1, wherein the second connecting portion is in a hook shape of a plane or in a spiral structure perpendicular to a plane in which the deformation portion is located;

16. The sound generating apparatus according to claim 1, wherein the elastic member is a two-piece split structure symmetrically provided at both sides of the coil body; or the elastic component is of a three-piece or four-piece split structure which is uniformly distributed in the circumferential direction of the coil body.

17. The sound generating apparatus according to claim 1, wherein the elastic member includes a plurality of first connecting portions provided in a circumferential direction of the coil, and adjacent at least two of the elastic members are connected together.

18. The sound generating apparatus according to claim 1, wherein the magnetic circuit system comprises a magnetic yoke, the magnetic yoke is a basin-shaped U-shaped iron, and a magnet is arranged in the basin-shaped cavity of the U-shaped iron;

the avoiding part is a notch arranged on the U-shaped iron.

19. The sound generating apparatus of claim 18, wherein the number of notches provided in the U-shaped iron corresponds to the number of elastic members provided in the coil body, and both sides of the notches form an angle with the center of the U-shaped iron in a range of 20 ° to 40 °.

20. The sound emitting apparatus of claim 1, wherein the sound emitting apparatus is a large bass or midrange sound emitting apparatus.