CN110650415A

CN110650415A - Sound production device and electronic equipment

Info

Publication number: CN110650415A
Application number: CN201910791245.3A
Authority: CN
Inventors: 王亚南; 赵荣秀; 邵明辉; 任广龙
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-01-03
Also published as: WO2021035870A1

Abstract

The invention discloses a sound production device, which comprises a vibration component, wherein the vibration component comprises: a voice coil, and a support structure connected with the voice coil and supporting the voice coil; one end of the vibrating diaphragm is fixedly connected with the supporting structure through a first cone basin; the cover body is connected with one end, close to the vibrating diaphragm, of the supporting structure; the first cone basin is fixedly connected with the first cover body, and the second cone basin is fixedly connected with the second cover body. The sound production device can effectively improve FR high-frequency response. The invention also discloses electronic equipment applying the sound production device, and the high-frequency acoustic performance of the electronic equipment is better.

Description

Sound production device and electronic equipment

Technical Field

The invention relates to a sound generating device and electronic equipment using the same.

Background

As an electroacoustic transducer, a speaker constitutes a basic sound unit of many consumer electronic terminals, for example, electronic products such as smart audio which have been recently developed, and demands for acoustic performance are increasing while intelligence is being pursued.

The existing speaker structure, the vibration component of which usually includes a diaphragm 1 ', a cone 2 ', a cover 3 ', a voice coil 4 ', a voice coil support structure (voice coil framework) 5 ', etc., wherein the cone 2 ' usually adopts a single cone design, in this case, the cone 2 ' is usually connected with the support structure 5 ', and the cover 3 ' is connected with the support structure 5 ' or the cone 2 '. However, the structural design can cause the structural strength of the vibration component to be weaker, the anti-resonance of the vibration diaphragm corrugated rim and the cone basin and the resonance of the cover body and the voice coil support structure are easy to occur, the frequency response range is small, the high-frequency cut-off frequency is low, and the acoustic performance of the loudspeaker is seriously influenced. Therefore, there is a need for further improvement of the speaker and the electronic product thereof in the prior art to solve the above problems.

Disclosure of Invention

The technical problem that this patent will be solved is through setting up the rib, makes it and cover body, awl basin etc. link together, suppresses foretell anti-resonance and resonance, improves FR high frequency response. The specific technical scheme provided by the invention is as follows:

a sound generating device comprising a vibration assembly, the vibration assembly comprising:

a voice coil, and a support structure connected with the voice coil and supporting the voice coil;

one end of the vibrating diaphragm is fixedly connected with the supporting structure through a first cone basin;

the cover body is connected with one end, close to the vibrating diaphragm, of the supporting structure;

the mask comprises a first cone basin, a second cone basin and a cover body, wherein the mask body is provided with a first cone basin and a second cone basin, the first cone basin is fixedly connected with the second cone basin, the second cone basin is fixedly connected with the cover body, and the first cone basin and the second cone basin are fixedly connected with the cover body.

Preferably, the reinforcement part is a second cone.

Preferably, the support structure includes a first fixing region for being connected and fixed with the voice coil, and a second fixing region for being connected and fixed with the first cone and the cover, and at the position of the second fixing region, the first cone, the second cone, the cover and the support structure together form a triangular structure.

Preferably, the supporting structure is cylindrical with two open ends, the cover and the second cone are fixed at the first end of the supporting structure, and the cover covers the first end opening of the supporting structure; the first cone is fixed at a position between the first end and the second end of the support structure.

Preferably, the second cone and the cover body are integrally formed; or the second cone and the cover body are respectively and independently formed structures.

Preferably, the supporting structure is an annular cylindrical structure, and the supporting structure is provided with air holes; the voice coil is combined on the outer side face of the supporting structure.

Preferably, the number of the support structures is two, the two support structures are respectively arranged on the inner side and the outer side of the voice coil, and the first cone is fixedly connected to the outer side face, located on the outer side, of the support structure.

Preferably, the magnetic circuit assembly further comprises a U iron, a magnet arranged in the U iron, and a magnetic conduction plate combined on the upper surface of the magnet.

Preferably, the magnetic circuit component comprises a T iron, a magnet sleeved on the outer side of a core column of the T iron, and a magnetic conduction plate.

Preferably, the upper surface of the magnetic conduction plate is provided with an auxiliary magnet.

Preferably, the first cone basin and the supporting structure are bonded together through gluing, and an annular first gluing area is formed between the outer side face of the supporting structure and the inner side face of the first cone basin;

the cover body and the supporting structure are bonded together through gluing; an annular flanging is arranged at the position where the cover body is combined with the supporting structure, and an annular second gluing area is formed between the outer side face of the supporting structure and the inner side face of the flanging.

Preferably, the diaphragm includes a folding ring, a combining portion connected and fixed with the first cone basin is disposed on the folding ring, and the combining portion and the second cone basin are respectively combined on two sides of the first cone basin.

Preferably, the first cone is made of any one of paper, aluminum or resin materials; the second cone is made of any one of paper, aluminum or resin materials; the first cone basin and the second cone basin are made of the same or different materials.

Preferably, the second cone is integrally a conical ring structure, and the openings at the two ends of the second cone are respectively provided with a first connecting part and a second connecting part which are used for being fixedly bonded with the first cone and the cover body.

On the one hand, the reinforcing part can improve the overall structural strength of the vibration component from the structural design, and further can improve the acoustic performance correspondingly to the reinforcing part, namely when the overall structural strength of the vibration component is improved, the anti-resonance between the vibrating diaphragm and the first cone and the resonance phenomenon between the vibrating diaphragm and the voice coil supporting structure can be obviously improved, the high-frequency cut-off frequency is improved, and the FR high-frequency response is improved.

In the sound production device provided by the invention, the reinforcing part is preferably designed into the second cone, at the moment, the whole strength of the vibration assembly is improved by arranging the two cones in the vibration assembly, and the first cone, the reinforcing part, the cover body and the support structure of the voice coil can form a triangular structure together at a local part, so that the whole stability of the structure is improved in addition to the optimization of the acoustic performance.

According to another concept of the present invention, there is also provided an electronic device including the sound generating apparatus described above.

Preferably, the electronic device is a sound box or a sound box.

The electronic device of the invention has better acoustic performance at high frequency.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, 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 cross-sectional schematic view of a vibration assembly of a prior art sound generating device;

FIG. 2 is a schematic cross-sectional view of a vibration component of a sound generator according to an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a graph comparing FR simulation curves of the sound generating device of the present invention and the prior art.

Description of reference numerals:

1. vibrating diaphragm, 1 ', vibrating diaphragm, 2, first cone, 2 ', cone, 3, the cover body, 31, turn-ups, 3 ', the cover body, 4, voice coil loudspeaker voice coil, 4 ', voice coil loudspeaker voice coil, 5, bearing structure, 51, first fixed region, 52, the fixed region of second, 53, bleeder vent, 5 ', bearing structure, 6, second cone, 61, first connecting portion, 62, second connecting portion, S1, first rubber coating district, S2, the rubber coating district of second.

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, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

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

Techniques, methods, and apparatus known to those 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 particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to one aspect of the present invention, there is provided a sound generating device comprising a vibration assembly, the vibration assembly comprising: a voice coil, and a support structure connected with the voice coil and supporting the voice coil; one end of the vibrating diaphragm is fixedly connected with the supporting structure through the first cone basin; the cover body is connected with one end, close to the vibrating diaphragm, of the supporting structure; still include the rib, the one end and the first cone basin of rib are connected fixedly, and the other end combines with the cover body.

The invention is further elucidated with reference to the drawing.

Example (b):

for example, as shown in fig. 2 and fig. 3, in the sound generating apparatus of the present embodiment, the vibration component specifically includes a diaphragm 1, a first cone 2, a cover 3, a voice coil 4, and a supporting structure 5, where, as for connection relationships among the components, the voice coil 4 is connected to the supporting structure 5, the supporting structure 5 can support the voice coil 4, and the voice coil 4 can be connected to the first cone 2 through the supporting structure 5, and the first cone 2 is connected to one end of the diaphragm 1, that is, the diaphragm 1 is actually connected and fixed to the supporting structure 5 through the first cone 2. The cover body 3 is connected with one end of the supporting structure 5 close to the vibrating diaphragm 1.

In the present embodiment, the reinforcing portion is provided as a second cone 6, one end of the second cone 6 is fixedly connected to the first cone 2, and the other end is combined with the cover 3. In order to further develop the effect of the second cone 6 on improving the high frequency FR, one end of the second cone 6 may be coupled to the outer edge of the first cone 2, and the other end may be coupled to the cover 3 coupled to the support structure 5.

Obviously, in this embodiment, the vibration component of the sound generating apparatus specifically includes a two-part cone-basin structure, that is, the first cone basin 2 and the second cone basin 6, and compared with the single cone basin in the prior art, the setting of the second cone basin 6 can effectively improve the overall structural strength of the vibration component, suppress the anti-resonance between the vibrating diaphragm 1 and the first cone basin 2 and the resonance between the vibrating diaphragm 1 and the voice coil support structure 5, improve the high-frequency cut-off frequency, and significantly improve the FR high-frequency response.

Specifically, referring to fig. 4, fig. 4 shows FR curves of a single cone basin structure in the prior art and a double cone basin structure in the present embodiment, where the horizontal axis represents frequency/Hz, and the vertical axis represents loudness/dB, where the solid line corresponds to the FR curve in the prior art structure, and the dotted line corresponds to the FR curve in the present embodiment structure, it can be seen by comparison that the middle frequency valley is shifted backward by about 2kHz, the high frequency cutoff frequency is also increased from 9.5kHz to 13.5kHz, FR is greatly increased from 10.5k to 19kHz, and the whole FR becomes flatter at high frequency, so the FR of the sound generating device in the present embodiment is significantly better than the response of the sound generating device in the prior art.

In addition, as can be seen from fig. 2 and 3, since the first cone 2 and the cover 3 are both connected to the support structure 5, and one end of the second cone 6 is connected to the first cone 2, and the other end is connected to the cover 3, the first cone 2, the cover 3, the support structure 5, and the second cone 6 together form a triangular structure in part. In particular, if the first fixing region 51 is defined as the supporting structure 5 for connecting and fixing with the voice coil 4, and the second fixing region 51 is defined as the supporting structure for connecting and fixing with the first cone 2 and the cover 3, it is obvious that the triangular structure described herein is specifically formed at the position of the second fixing region 52.

Specifically, in the present embodiment, the support structure 5 is an annular cylindrical structure, and both ends are provided as openings, the voice coil 4 is coupled to the outer side surface of the support structure 5 and located in the lower region of the support structure 5, the cover 3 and the second cone 6 are fixed to the first end (upper end surface) of the support structure, and the first cone 2 is fixed to a position between the first end and the second end (i.e., lower end surface), of course, the first cone 2 is located in the second fixing region 52 at the same time. The cover 3 is required to cover the first end opening of the support structure 5, so as to prevent foreign matters such as dust from entering the interior of the sound generating device.

In addition, in consideration of the requirements of weight reduction and heat dissipation, the side wall of the supporting structure 5 may be provided with a plurality of ventilation holes 53, and the ventilation holes 53 may be uniformly arranged or non-uniformly arranged around the circumference of the side wall of the cylindrical supporting structure 5, and the specific arrangement mode is not limited.

Above-mentioned each part is when concrete assembly, and first awl basin 2 can bond together through the rubber coating with bearing structure 5, in order to guarantee the intensity that combines between the two, can form annular first rubber coating district S1 between bearing structure 5 'S lateral surface and first awl basin 2' S medial surface, can hold sufficient colloid in this rubber coating district, can guarantee the stability that the two is connected, can avoid producing too much excessive glue again and influence the outward appearance and the performance of product.

Similarly, the cover 3 and the supporting structure 5 may be bonded together by glue, wherein the cover 3 is generally configured to be dome-shaped, specifically, concave dome-shaped structure in this embodiment, in order to facilitate glue application and improve the firmness of the combination with the supporting structure 5, the position where the cover 3 is combined with the first end of the supporting structure 5 is configured to be a plane, and an annular flange structure inclined downward is provided based on the plane extension, and the position where the cover is combined with the supporting structure is provided with the annular flange 31, which is beneficial to forming an annular second glue-applying area S2 between the outer side surface of the supporting structure 5 and the inner side surface of the flange 31, and can enable the glue to be contained in the inner side of the whole structure of the cover 3, so as to prevent the glue from overflowing.

In this embodiment, the first cone basin 2 and the second cone basin 6 are both designed to be a tapered annular structure, and are both provided with openings at both ends, for better connection and fixation with the first cone basin 2 and the cover body 3, a first connecting portion 61 and a second connecting portion 62 may be respectively provided at both ends of the second cone basin 6, where the first connecting portion 61 is used to be combined with the first cone basin 2, and the first connecting portion 61 may be tilted outward by a certain angle based on a main body portion of the second cone basin 6, for example, substantially parallel to the main body of the first cone basin 2 as shown in fig. 2, so that the first connecting portion 61 and the first cone basin 2 are connected and fixed by coating a colloid in a region where the first connecting portion 61 and the first cone basin 2 are combined. The second connecting portion 62 is used to be combined with the cover 3, and the second connecting portion 62 may also be a planar structure extending horizontally based on the bottom end position of the second cone 6 (of course, the second connecting portion may also be in other forms such as being inclined by a certain angle), and the portion and the planar portion of the cover 3 may be tightly combined together through gluing. It is to be understood that the above description is only for the connection mode between the members based on the illustration of the present embodiment, and is not intended to limit the present invention, and the connection mode between the members, the specific shape design of the connection part/connection part, and the like are not limited to the above description.

For the vibrating diaphragm 1, it includes a folding ring, the folding ring may be generally configured to have an annular arc-shaped protruding structure, the inner and outer sides of the folding ring are respectively provided with a combining portion for connecting and fixing the first cone 2 and a bracket (not shown) of the sound generating device, specifically, it may be an extension section extending along a direction parallel to a main body of the first cone 2 at the inner side of the folding ring, and the extension section is tightly connected with the first cone 2; alternatively, the diaphragm 1 and the first cone 2 may be integrally formed. Since the second cone 6 also needs to be connected to the first cone 2 at the same time, the above-mentioned connecting portion and the second cone 6 can be connected to both sides of the first cone 2.

In the present embodiment, the second cone 6 and the cover 3 are formed separately, but in some other embodiments, they may be formed integrally, that is, they may extend from the cover 3 in a direction toward the tip end of the first cone 2. In addition, the material of the first cone 2 and the second cone 6 may be any one of paper, aluminum or resin material (for example, PP), although any combination of the two materials is not excluded. The first cone basin 2 and the second cone basin 6 can be made of the same or different materials, and can be flexibly selected according to requirements.

Further, the support structure 5 shown in the present embodiment is a cylindrical structure, and two support structures 5 may be provided, that is, a cylindrical support structure 5 is provided on the inner side and the outer side of the voice coil 4, respectively, so as to wrap the voice coil 4 in the middle, and in this case, the first cone 2 is connected to the outer side surface of the support structure on the outer side. Of course, when such a design is adopted, the electrical connection implementation of the sound generator may also be changed, for example, by providing the wire/conductive sheet on the centering strut, providing the tin foil sheet on the outer support structure, and the like, so that the wire/conductive sheet is in contact with the tin foil sheet.

It is known that the sound generating device also relies on the driving action of the magnetic circuit for proper operation. In this embodiment, the magnetic circuit assembly may adopt an internal magnetic circuit structure, that is, the magnetic circuit assembly includes a U-iron, a magnet disposed in the U-iron, and a magnetic conductive plate combined with an upper surface of the magnet; an external magnetic circuit structure can also be adopted, namely the external magnetic circuit structure comprises a T iron, a magnet and a magnetic conduction plate, wherein the magnet and the magnetic conduction plate are sleeved outside a core column of the T iron, and certainly, in order to optimize magnetic line distribution and improve magnetic induction intensity, an auxiliary magnet can be continuously arranged on the upper surface of the magnetic conduction plate. Of course, the present invention is an improvement of the vibration component of the sound generating device, and the specific structure and implementation form of the driving part are not limited.

According to another aspect of the present invention, there is also provided an electronic device, wherein the sound generating device is applied to the electronic device, and the acoustic performance of the electronic device, especially the acoustic performance at high frequency, is better through the analysis. The electronic device may be a sound box or a sound box, for example, an electronic terminal such as a smart sound box, but the electronic device is not limited to the two electronic devices, and those skilled in the art should understand that any electronic device that can apply the sound generating device of the present invention as one sound generating unit can be considered.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present 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. A sound generating device comprising a vibration assembly, the vibration assembly comprising:

it is characterized in that the preparation method is characterized in that,

the first cone basin is fixedly connected with the first cover body, and the second cone basin is fixedly connected with the second cover body.

2. The sound-emitting device of claim 1,

the reinforcing part is a second cone.

3. The apparatus according to claim 2,

the supporting structure comprises a first fixing area and a second fixing area, the first fixing area is used for being connected and fixed with the voice coil, the second fixing area is used for being connected and fixed with the first cone basin and the cover body, and the first cone basin, the second cone basin, the cover body and the supporting structure form a triangular structure together at the position of the second fixing area.

4. The apparatus according to claim 2,

the supporting structure is in a cylindrical shape with openings at two ends, the cover body and the second cone are fixed at the first end of the supporting structure, and the cover body covers the opening at the first end of the supporting structure; the first cone is fixed at a position between the first end and the second end of the support structure.

5. The sound generating apparatus according to claim 2,

the second cone and the cover body are integrally formed; or the second cone and the cover body are respectively and independently formed structures.

6. The sound-emitting device of claim 1,

the supporting structure is an annular cylindrical structure, and air holes are formed in the supporting structure; the voice coil is combined on the outer side face of the supporting structure.

7. The sound-emitting device of claim 1,

the support structure is provided with two, sets up respectively the inboard and the outside of voice coil loudspeaker voice coil, first awl basin connection is fixed and is located the outside on the lateral surface of support structure.

8. The sound-emitting device of claim 1,

the magnetic circuit component comprises a U iron, a magnet arranged in the U iron and a magnetic conduction plate combined on the upper surface of the magnet.

9. The sound-emitting device of claim 1,

the magnetic circuit component comprises a T iron, a magnet and a magnetic conduction plate, wherein the magnet and the magnetic conduction plate are sleeved on the outer side of a core column of the T iron.

10. The sound-emitting device according to claim 8 or 9,

and the upper surface of the magnetic conduction plate is provided with an auxiliary magnet.

11. The sound-emitting device of claim 1,

the first cone basin and the supporting structure are bonded together through gluing, and an annular first gluing area is formed between the outer side face of the supporting structure and the inner side face of the first cone basin;

12. The apparatus according to claim 2,

the vibrating diaphragm comprises a folding ring, a combining part fixedly connected with the first cone basin is arranged on the folding ring, and the combining part and the second cone basin are respectively combined on two sides of the first cone basin.

13. The apparatus according to claim 2,

the first cone is made of any one of paper, aluminum or resin materials;

the second cone is made of any one of paper, aluminum or resin materials;

the first cone basin and the second cone basin are made of the same or different materials.

14. The apparatus according to claim 2,

the second cone basin is integrally of a conical annular structure, and the openings at the two ends of the second cone basin are respectively provided with a first connecting part and a second connecting part which are used for being fixedly bonded with the first cone basin and the cover body.

15. An electronic device, characterized in that the electronic device comprises a sound emitting apparatus according to any one of claims 1 to 14.

16. The electronic device of claim 15, wherein the electronic device is a sound box or a stereo.