WO2021035870A1

WO2021035870A1 - Sound production device and electronic apparatus

Info

Publication number: WO2021035870A1
Application number: PCT/CN2019/108803
Authority: WO
Inventors: 王亚南; 赵荣秀; 邵明辉; 任广龙
Original assignee: 歌尔股份有限公司
Priority date: 2019-08-26
Filing date: 2019-09-28
Publication date: 2021-03-04
Also published as: CN110650415A

Abstract

Disclosed is a sound production device, comprising: a vibration assembly, wherein the vibration assembly comprises a voice coil (4), and a support structure (5) connected to the voice coil (4) and supporting the voice coil (4); a diaphragm (1), wherein one end of the diaphragm (1) is fixedly connected to the support structure (5) by means of a first cone (2); and a cover body (3), wherein the cover body (3) is connected to one end, close to the diaphragm (1), of the support structure (5); and the sound production device further comprising a reinforcing part, wherein one end of the reinforcing part is fixedly connected to the first cone (2), and the other end thereof is combined with the cover body (3). The sound production device can effectively improve the FR high-frequency response. In addition, further disclosed is an electronic apparatus using the sound production device, and the high-frequency acoustic performance of the electronic apparatus is thus better.

Description

Sound device and electronic equipment

Technical field

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

Background technique

As an electro-acoustic conversion device, the speaker constitutes the basic sound-producing unit of many consumer electronic terminals. For example, electronic products such as smart audio, which have been emerging in recent years, are constantly pursuing intelligence, and the requirements for acoustic performance are also increasing. Higher.

In the existing speaker structure, its vibration components usually include a diaphragm 1', a cone 2', a cover 3', a voice coil 4', and a voice coil support structure (voice coil skeleton) 5', among which the cone 2' A single cone design is often used. In this case, the cone 2'is usually connected to the support structure 5', and the cover 3'is connected to the support structure 5'or the cone 2'. However, this structural design will cause the structural strength of the vibrating component to be weak, and it is prone to anti-resonance between the diaphragm fold ring and the cone, and the resonance between the cover and the voice coil support structure. Its frequency response range is small, and the high-frequency cut-off frequency is low. Seriously affect the acoustic performance of the speaker. Therefore, it is necessary to further improve the prior art speakers and electronic products to solve the above-mentioned problems.

Summary of the invention

The technical problem to be solved by this patent is to suppress the above-mentioned anti-resonance and resonance and improve the high frequency response of FR by arranging a reinforcing part to connect it with the cover, cone, etc. The specific technical solutions provided by the present invention are:

A sound generating device includes a vibrating component, and the vibrating component includes:

A voice coil, and a support structure connected to the voice coil and supporting the voice coil;

A diaphragm, one end of the diaphragm is connected and fixed to the supporting structure through a first cone;

A cover, which is connected to one end of the support structure close to the diaphragm;

Wherein, it further includes a reinforcement part, one end of the reinforcement part is connected and fixed with the first cone, and the other end is combined with the cover body.

Preferably, the reinforcing part is a second cone.

Preferably, the supporting structure includes a first fixing area for connecting and fixing with the voice coil, and a second fixing area for connecting and fixing with the first cone and the cover. At the location of the fixed area, the first cone, the second cone, the cover and the support structure jointly form a triangular structure.

Preferably, the support structure is in the shape of a cylinder with open ends, the cover body and the second cone are fixed at the first end of the support structure, and the cover body covers the first end of the support structure. The end is open; 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 separately formed structures.

Preferably, the support structure is an annular cylindrical structure, and the support structure is provided with vents; the voice coil is coupled to the outer surface of the support structure.

Preferably, two support structures are provided, which are respectively provided on the inner and outer sides of the voice coil, and the first cone is connected and fixed on the outer surface of the support structure located on the outer side.

Preferably, it further includes a magnetic circuit assembly including a U iron, a magnet arranged in the U iron, and a magnetic conductive plate coupled to the upper surface of the magnet.

Preferably, it further includes a magnetic circuit assembly, which includes a T iron, a magnet sleeved on the outside of the core post of the T iron, and a magnetic conductive plate.

Preferably, the upper surface of the magnetic conductive plate is provided with a secondary magnet.

Preferably, the first cone and the support structure are glued together, and an annular first gluing area is formed between the outer side of the support structure and the inner side of the first cone ；

The cover body and the support structure are glued together; the position where the cover body and the support structure are combined is provided with an annular flanging, and the outer side of the support structure is connected to the flanging An annular second gluing area is formed between the inner sides.

Preferably, the diaphragm includes a folding ring, the folding ring is provided with a coupling portion fixedly connected to the first cone, and the coupling portion and the second cone are respectively coupled to the first cone. Both sides of the basin.

Preferably, the first cone is any one of paper, aluminum or resin material; the second cone is any one of paper, aluminum or resin material; the first cone, the The material of the second cone is the same or different.

Preferably, the second cone has a cone-shaped annular structure as a whole, and a second cone for bonding and fixing with the first cone and the cover is respectively provided at the openings at both ends of the second cone. A connecting part and a second connecting part.

The sound device provided by the present invention is additionally provided with a reinforcement part on the basis of the existing speaker structure. One end of the reinforcement part is connected and fixed with the first cone, and the other end is combined with the cover. On the one hand, from In terms of structural design, the reinforcing part can increase the overall structural strength of the vibrating component, and further, it can correspond to the improvement of the acoustic performance of the reinforcing part, that is, when the overall structural strength of the vibrating component is improved, the diaphragm and the first cone The anti-resonance between the diaphragm and the resonance phenomenon between the diaphragm and the voice coil support structure can be significantly improved, and the high-frequency cut-off frequency can be increased, thereby improving the FR high-frequency response.

In the sound device provided by the present invention, the reinforcement part is preferably designed as a second cone. At this time, two cones are provided in the vibration assembly to improve the overall strength of the vibrating assembly, and the first cone, the reinforcement The supporting structure of the part, the cover body and the voice coil can jointly form a triangular structure locally. In addition to the above-mentioned optimization of the acoustic performance, the overall stability of the structure is also improved.

According to another concept of the present invention, there is also provided an electronic device including the above-mentioned sound emitting device.

Preferably, the electronic device is a speaker or a stereo.

The electronic equipment of the present invention has better acoustic performance at high frequencies.

Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.

Description of the drawings

The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention, and together with the description are used to explain the principle of the present invention.

Figure 1 is a schematic cross-sectional view of a vibration component of a prior art sound generating device;

2 is a schematic cross-sectional view of a vibration component of a sound generating device according to an embodiment of the invention;

Fig. 3 is an enlarged schematic diagram of part A in Fig. 2;

Fig. 4 is a comparison diagram of FR simulation curves between the embodiment of the present invention and the prior art sound generating device.

Description of reference signs:

1. Diaphragm, 1', diaphragm, 2, first cone, 2', cone, 3, cover, 31, flanging, 3', cover, 4, voice coil, 4', voice coil , 5. Support structure, 51, first fixed area, 52, second fixed area, 53, ventilation holes, 5', support structure, 6, second cone, 61, first connection part, 62, second connection Section, S1, the first gluing area, S2, the second gluing area.

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

The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values.

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

According to one aspect of the present invention, the present invention provides a sound generating device, including a vibration component, the vibration component including: a voice coil, and a support structure connected with the voice coil and supporting the voice coil; the diaphragm, one end of the diaphragm passes through the first A cone is connected and fixed with the support structure; a cover body, the cover body is connected with one end of the support structure close to the diaphragm; further comprising a reinforcement part, one end of the reinforcement part is connected and fixed with the first cone and the other end is combined with the cover body.

The present invention will be further explained below in conjunction with the drawings.

Examples:

For example, as shown in Figures 2 and 3, the sound device of this embodiment has a vibrating component specifically including a diaphragm 1, a first cone 2, a cover 3, a voice coil 4, and a support structure 5. In terms of the connection relationship, the voice coil 4 and the support structure 5 are connected together, the support structure 5 can support the voice coil 4, and the voice coil 4 can be connected to the first cone 2 through the support structure 5, and the first cone 2 is connected to the vibration 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 3 is connected to the end of the support structure 5 close to the diaphragm 1.

In this embodiment, the reinforcing portion is configured as a second cone 6, one end of the second cone 6 is connected and fixed with the first cone 2, and the other end is combined with the cover 3. In order to maximize the improvement effect of the second cone 6 on the high frequency FR, during implementation, one end of the second cone 6 can be connected to the outer edge of the first cone 2, and the other end can be connected to the cover. The position where the body 3 is combined with the support structure 5.

Obviously, in this embodiment, the vibrating assembly of the sound device specifically includes a two-part cone structure, that is, the first cone 2 and the second cone 6. Compared with the single cone in the prior art, the first cone The arrangement of the second cone 6 can effectively improve the overall structural strength of the vibrating component, suppress the anti-resonance between the diaphragm 1 and the first cone 2 and the resonance between the diaphragm 1 and the voice coil support structure 5, and improve the high frequency cut-off Frequency, the high frequency response of FR has been significantly improved.

Specifically, please refer to Figure 4. Figure 4 shows the FR curve of the prior art single cone structure and the double cone structure of this embodiment. The horizontal axis represents frequency/Hz, and the vertical axis represents loudness/dB. , The solid line corresponds to the FR curve under the prior art structure, and the dashed line corresponds to the FR curve under the structure of this embodiment. Through comparison, it can be seen that the mid-frequency valley is shifted back by about 2kHz, and the high-frequency cut-off frequency is also increased from 9.5kHz to 13.5. kHz, the FR is greatly increased from 10.5k-19kHz, and the high frequency of the entire FR becomes flatter. Therefore, the FR of the sound generating device of this embodiment is significantly better than the response of the sound generating device of the prior art.

In addition, in conjunction with Figures 2 and 3, it can be seen that since the first cone 2 and the cover 3 are both connected to the supporting structure 5, one end of the second cone 6 is connected to the first cone 2 and the other end is connected to the cover 3. Therefore, the first cone 2, the cover body 3, the supporting structure 5 and the second cone 6 jointly form a triangular structure locally. Specifically, if the first fixing area 51 is defined for the support structure 5 to be connected and fixed with the voice coil 4, and the second fixing area 51 is defined for the connection and fixation with the first cone 2 and the cover 3, then Obviously, the triangular structure described here is specifically formed at the position of the second fixing area 52.

Specifically, in this embodiment, the support structure 5 is an annular cylindrical structure with openings at both ends. The voice coil 4 is coupled to the outer surface of the support structure 5 and is located in the lower area of the support structure 5. 3. The second cone 6 is fixed at the first end (upper end surface) of the support structure, and the first cone 2 is fixed at the position between the first end and the second end (ie the lower end surface). Of course, the first The cone 2 is located in the second fixing area 52 at the same time. Wherein, the cover 3 needs to cover the first end opening of the support structure 5 so as to prevent foreign dust and other sundries from entering the inside of the sound generating device. This part has the same function as the cover in the prior art, and will not be repeated here.

In addition, considering the requirements for weight reduction and heat dissipation, a number of vents 53 can be provided on the side wall of the support structure 5. The vents 53 can be evenly arranged circumferentially around the side wall of the cylindrical support structure 5, or they can be arranged non-uniformly. The specific setting method is not limited.

When the above-mentioned components are specifically assembled, the first cone 2 and the support structure 5 can be glued together. In order to ensure the strength of the combination between the two, the outer surface of the support structure 5 and the first cone 2 can be bonded together. An annular first glue area S1 is formed between the inner sides of the, which can contain enough glue to ensure the stability of the connection between the two and avoid excessive glue overflow which affects the appearance of the product And performance.

Similarly, the cover 3 and the support structure 5 can also be glued together. The cover 3 is usually set in a dome shape. In this embodiment, it is specifically a concave dome structure. , And improve the firmness of the combination with the support structure 5. The position where the cover body 3 is combined with the first end of the support structure 5 is set as a plane, and a downwardly inclined annular flanging structure is provided based on the extension of the plane, and the cover body and An annular flanging 31 is provided at the position where the supporting structure is combined, which is beneficial to form an annular second gluing area S2 between the outer side surface of the supporting structure 5 and the inner side surface of the flanging 31, and enables the glue to be contained On the inner side of the overall structure of the cover 3 to prevent colloid overflow.

In this embodiment, the first cone 2 and the second cone 6 are both cone-shaped ring structures, and both are set to have two ends open, in order to better communicate with the first cone 2, the cover 3 The connection is fixed. A first connecting portion 61 and a second connecting portion 62 may be respectively provided at the openings at both ends of the second cone 6, wherein the first connecting portion 61 is used to combine with the first cone 2, and the first connecting portion 61 may be based on the main part of the second cone 6 inclined to the outside by a certain angle, for example, as shown in FIG. 2 is roughly parallel to the main body of the first cone 2, so that the first connecting portion 61 is opposite to the first cone 2. The joint area is coated with colloid to make the two connect and fix. The second connecting portion 62 is used to be combined with the cover body 3. The second connecting portion 62 can also be a planar structure extending horizontally based on the bottom end position of the second cone 6 (of course, it can also be inclined at a certain angle and other forms) , This part and the plane part of the cover 3 can be tightly joined together by gluing. Of course, the above is only a description of the connection between the components based on the legend of the embodiment, which is easy to understand and is not used to limit the present invention. The connection between the above-mentioned components, the specific shape design of the connecting part/joining part, etc. All are not restricted by the above content.

For the diaphragm 1, it includes a folding ring. The folding ring can usually be set to have a ring-shaped arc-shaped convex structure. The inner and outer sides of the folding ring are respectively provided with a first cone 2 and a bracket (not shown) for the sounding device. (Shown) the connecting portion for connection and fixation, specifically, may be an extension section extending in a direction parallel to the main body of the first cone 2 on the inner side of the folding ring, and the extension section and the first cone 2 are tightly connected together Or, the diaphragm 1 and the first cone 2 may be an integrally formed structure. Since the second cone 6 also needs to be connected with the first cone 2 at the same time, the above-mentioned coupling part and the second cone 6 can be coupled on both sides of the first cone 2 respectively.

It should be noted that in this embodiment, the second cone 6 and the cover body 3 are formed separately, but in some other embodiments, the two can also be integrally formed, that is, they can be formed upward from the cover body 3. It is formed by extending in the direction close to the top end of the first cone 2. In addition, the selection of materials for the first cone 2 and the second cone 6 can be any one of paper, aluminum, or resin materials (such as PP), and of course any combination of several is not excluded. The materials of the first cone 2 and the second cone 6 can be the same or different, and can be flexibly selected according to needs.

Further, the support structure 5 shown in this embodiment is a cylindrical structure, which can also be provided with two, that is, a cylindrical support structure 5 is provided on the inner side and the outer side of the voice coil 4, so as to wrap the voice coil 4 In the middle, at this time, the first cone 2 is connected to the outer side of the support structure located on the outer side. Of course, when this design method is adopted, the electrical connection implementation of the sound device can also be changed. For example, a wire/conductive sheet can be arranged on the centering support piece, and a tin foil sheet can be arranged on the outer support structure to make the wire/conductive sheet Contact with tin foil.

It is well known that the normal operation of the sound generating device also depends on the driving action of the magnetic circuit. In this embodiment, the magnetic circuit assembly can adopt an internal magnetic circuit structure, that is, a U iron, a magnet arranged in the U iron, and a magnetic conductive plate combined on the upper surface of the magnet; an external magnetic circuit structure can also be adopted, that is, a T Iron, magnets and magnetic conductive plates sleeved on the outer side of the T-iron core column. Of course, in order to optimize the distribution of magnetic lines of force and increase the magnetic induction intensity, secondary magnets can also be provided on the upper surface of the magnetic conductive plates. Of course, the present invention is an improvement proposed for the vibration component of the sound generating device, and does not limit the specific structure and implementation form of the driving part.

According to another aspect of the present invention, there is also provided an electronic device in which the above-mentioned sound generating device is applied. Through the foregoing analysis, it can be known that the acoustic performance of the electronic device, especially the acoustic performance at high frequencies, is better. The electronic device mentioned here can be an audio or a speaker, such as an electronic terminal such as a smart speaker, but it is not limited to the application of these two electronic devices. Those skilled in the art should understand that as long as it is capable of using the sound emitting device of the present invention Electronic equipment used as a sound unit can be considered.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A sound generating device includes a vibrating component, and the vibrating component includes:

A voice coil, and a support structure connected to the voice coil and supporting the voice coil;

A diaphragm, one end of the diaphragm is connected and fixed to the supporting structure through a first cone;

A cover, which is connected to one end of the support structure close to the diaphragm;

It is characterized by

It also includes a reinforcement part, one end of the reinforcement part is connected and fixed with the first cone, and the other end is combined with the cover body.
The sound emitting device according to claim 1, wherein:

The reinforcing part is a second cone.
The sound generating device according to claim 2, wherein:

The support structure includes a first fixing area for connecting and fixing with the voice coil, and a second fixing area for connecting and fixing with the first cone and the cover body. The second fixing area is located at the position of the second fixing area. Where, the first cone, the second cone, the cover and the support structure together form a triangular structure.
The sound generating device according to claim 2, wherein:

The support structure is in the shape of a cylinder with open ends, the cover body and the second cone are fixed at the first end of the support structure, and the cover body covers the first end opening of the support structure; The first cone is fixed at a position between the first end and the second end of the supporting structure.
The sounding device according to claim 2, wherein:

The second cone and the cover body are integrally formed; or, the second cone and the cover body are separately formed structures.
The sound emitting device according to claim 1, wherein:

The supporting structure is a ring-shaped cylindrical structure, and the supporting structure is provided with ventilation holes; the voice coil is coupled to the outer surface of the supporting structure.
The sound emitting device according to claim 1, wherein:

There are two support structures, which are respectively arranged on the inner side and the outer side of the voice coil, and the first cone is connected and fixed on the outer surface of the support structure located on the outer side.
The sound emitting device according to claim 1, wherein:

It also includes a magnetic circuit assembly, which includes a U iron, a magnet arranged in the U iron, and a magnetic conductive plate combined on the upper surface of the magnet.
The sound emitting device according to claim 1, wherein:

It also includes a magnetic circuit assembly, which includes a T iron, a magnet sleeved on the outside of the core column of the T iron, and a magnetic conductive plate.
The sounding device according to claim 8 or 9, characterized in that:

The upper surface of the magnetic conductive plate is provided with a secondary magnet.
The sound emitting device according to claim 1, wherein:

The first cone and the support structure are bonded together by gluing, and an annular first gluing area is formed between the outer side of the support structure and the inner side of the first cone;

The cover body and the support structure are glued together; the position where the cover body and the support structure are combined is provided with an annular flanging, and the outer side of the support structure is connected to the flanging An annular second gluing area is formed between the inner sides.
The sound generating device according to claim 2, wherein:

The diaphragm includes a folding ring, the folding ring is provided with a connecting portion fixedly connected to the first cone, and the connecting portion and the second cone are respectively connected to the two cones of the first cone. side.
The sound generating device according to claim 2, wherein:

The first cone is any one of paper, aluminum or resin material;

The second cone is any one of paper, aluminum or resin material;

The materials of the first cone and the second cone are the same or different.
The sound generating device according to claim 2, wherein:

The second cone is in a cone-shaped ring structure as a whole, and there are respectively provided first connecting parts for bonding and fixing with the first cone and the cover at the openings at both ends of the second cone和二连接部。 And the second connection part.
An electronic device, characterized in that the electronic device comprises the sound emitting device according to any one of claims 1 to 14.
The electronic device according to claim 15, wherein the electronic device is a speaker or a speaker.