WO2019205518A1

WO2019205518A1 - Sound-emitting device for electronic product and electronic product

Info

Publication number: WO2019205518A1
Application number: PCT/CN2018/110888
Authority: WO
Inventors: 孙立国; 葛连山
Original assignee: 歌尔股份有限公司
Priority date: 2018-04-28
Filing date: 2018-10-18
Publication date: 2019-10-31
Also published as: CN208112927U

Abstract

The present application relates to a sound-emitting device for an electronic product and the electronic product. The sound-emitting device comprises a sound-emitting device body and a seal, wherein the sound-emitting device body comprises a housing, a magnetic circuit system and a diaphragm; the edge of the diaphragm and the magnetic circuit system are fixed in the housing; the housing is provided with a sound outlet thereon, and the sound generated by the diaphragm is transmitted from the sound outlet; a first side of the diaphragm is in communication with the sound outlet; the seal is configured to be in sealed connection to a structure in communication with a second side of the diaphragm on the sound-emitting device body and the electronic product main body respectively, and the seal forms a rear acoustic cavity between the sound-emitting device body and the electronic product body, the seal being configured to change the volume of the rear acoustic cavity. One technical effect of the present application is that the seal may be used to change the volume of the rear acoustic cavity, thereby improving the acoustic performance of the sound-emitting device.

Description

Sounding devices and electronic products for electronic products

Technical field

The present application relates to the field of electroacoustic products, and more particularly, to a sound emitting device and an electronic product.

Background technique

The sounding device is a basic sounding unit and is widely used in mobile terminal devices such as mobile phones and tablet computers. The existing sounding device is mainly assembled in the form of a module inside the mobile phone.

In order to ensure better acoustic performance of the sounding device, it is generally required that the sounding device has a large sealed back cavity. However, as electronic products such as mobile phones are gradually becoming thinner and lighter, the space left inside the electronic products to accommodate the sounding devices is getting smaller and smaller. Under this development trend, there is a technical bottleneck in maintaining the original acoustic performance of the sounding device or further improving the acoustic performance of the sounding device. On the other hand, with the development of electronic products, consumers have put forward higher requirements for the acoustic performance of sounding devices. Especially in the case of external applications, the performance of the external speakers of mobile phones and tablets is often difficult to meet the consumer's requirements for sound quality.

Therefore, it is necessary to improve the sounding device to improve the acoustic performance of the sounding device or to reduce the space occupied by the sounding device.

Summary of the invention

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

According to an aspect of the present application, there is provided a sounding device comprising a sounding device body and a seal, the sounding device body comprising a housing, a magnetic circuit system and a diaphragm, the edge of the diaphragm and the magnetic circuit system being fixed at In the housing, an acoustic outlet is disposed on the housing, and a sound generated by the diaphragm is transmitted from the sound outlet, and a first side of the diaphragm communicates with the sound outlet, and the seal is Arranging a sealing connection with the structure of the second side of the sounding device body and the electronic product body, the sealing member forming a rear acoustic cavity between the sounding device body and the electronic product body, the sealing The piece is configured to change the volume of the rear acoustic cavity.

Optionally, the sealing member has a plurality of pleats, and the pleats are formed by sequentially interlacing a plurality of sheets, and the sheets of the pleats at both ends in the extending direction thereof respectively correspond to the sounding device body and the electronic product. The body is sealingly coupled and the seal is configured to be telescopically deformable by the pleats.

Optionally, the seal material is a single material or a composite material.

Optionally, the sealing member is an elastic rubber sealing ring to change the volume of the rear acoustic cavity.

Optionally, the sounding device body is further provided with an electrical connector, and the electrical connector is configured to form an electrical connection with the electronic product body.

According to another aspect of the present application, an electronic product includes: an electronic product body and the sounding device, wherein the electronic product body has a receiving cavity; the sounding device body is disposed in the receiving cavity, The sealing member is sealingly connected to an inner side of the accommodating cavity;

The seal is configured to extend in a direction that extends out of the receiving cavity.

Optionally, the sealing member is coupled to a side of a back surface of the magnetic circuit system of the sounding device body, and the sealing member is stretched to be configured to enable an upper surface of the sounding device body to be higher than the receiving cavity edge.

Optionally, the sealing member is coupled to a side of the housing side of the sounding device body, and the sealing member is configured to extend the sounding opening of the sounding device body out of the receiving cavity the edge of.

Optionally, the device further includes a locking mechanism, the locking mechanism includes a first locking portion and a second locking portion, the first locking portion and the second locking portion are respectively disposed on the sounding device body and The first locking portion is connected to the second locking portion bayonet;

When the first locking portion is disengaged from the second locking portion, the upper surface of the sounding device body is higher than the upper edge of the receiving cavity.

Optionally, a speaker port is further disposed on the accommodating cavity, and the sound emitting port is in communication with the speaker port when the sounding device body is disposed in the accommodating cavity.

Optionally, the shape of the sealing member matches the shape of the sounding device body and the accommodating cavity opening, and the peripheral length and width of the sealing member are smaller than the opening size of the accommodating cavity.

One technical effect of the present application is that the seal can change the volume of the rear acoustic cavity, thereby improving the acoustic performance of the sounding device.

Other features and advantages of the present application will become apparent from the following detailed description of the exemplary embodiments.

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a partial side cross-sectional view of an electronic product according to an embodiment of the present application;

Figure 2 is a partial enlarged view of Figure 1;

3 is a partial side cross-sectional view of an electronic product according to an embodiment of the present application;

4 is a schematic side view showing the structure of the sounding device seal provided by the embodiment of the present application;

FIG. 5 is an exploded view of an electronic product according to an embodiment of the present application; FIG.

6 is a partial side cross-sectional view of an electronic product according to another embodiment of the present application;

FIG. 7 is a partial side cross-sectional view of an electronic product according to another embodiment of the present application.

Description of the reference signs:

10-sound device body; 11-electric connector;

12-speaker; 20-seal;

21-pleat; 211-sheet;

30-electronic product body; 31-receiving cavity;

311-speaker port;

detailed description

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

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

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

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

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

1 is a partial side cross-sectional view of an electronic product according to an embodiment of the present invention, FIG. 2 is a partial enlarged view of FIG. 1, and FIG. 3 is a side cross-sectional view of the electronic product according to an embodiment of the present application. As shown in FIG. 1, FIG. 2 and FIG. 3, the sounding device provided in this embodiment includes: a sounding device body 10 and a sealing member 20. The sounding device body 10 includes a casing, a magnetic circuit system and a diaphragm, a diaphragm and a magnetic circuit. The system is fixedly disposed in the housing, and the sound outlet 12 is disposed on the housing. After the diaphragm enters the sound signal, it can vibrate and sound under the drive of the magnetic circuit system. The sound generated by the diaphragm is transmitted from the sound outlet 12. The diaphragm divides the space in the housing into two regions, the first side of the diaphragm is in communication with one region, and the second side is in communication with the other region. The first side of the diaphragm communicates with the sound outlet 12 through a space in the housing. The seal 20 is configured to be in sealing connection with the structure of the second side of the sounding device body 10 that communicates with the diaphragm and the electronic product body 30, respectively, to define a rear acoustic cavity between the sounding device body 10 and the electronic product body 30. The rear acoustic cavity communicates from the second side of the diaphragm to the seal 20 and the wall surface of the electronic product body 30. The seal 20 is configured to change the volume of the rear acoustic cavity.

The rapid development of electronic products also puts higher requirements on the overall volume and thickness of the product equipment, which requires the space allocated for each component in the product equipment to be reduced. The sounding device is a component occupying a large space in an electronic product. In order to ensure good acoustic performance of the sounding device, the sounding device is generally required to have a large sealed sound cavity. The sounding device provided in this embodiment is applied to the main body of the electronic product, and the rear acoustic cavity is defined in the accommodating cavity of the main body of the electronic product through the sealing member. By utilizing the characteristics of the seal material and structure, the volume of the rear acoustic cavity corresponding to the sounding device can be changed. Furthermore, the requirements for the acoustic performance of the sounding device under different application conditions are met.

As shown in FIG. 1 and FIG. 2, the sound outlet 12 of the sounding device body 10 provided in this embodiment is located on the side of the sounding device body, and the sound outlet 12 is connected to the upper portion of the diaphragm inside the sounding device body. The magnetic circuit system is fixedly disposed in the body of the sounding device, which is located below the diaphragm. The sound produced by the sounding device body 10 during operation can be transmitted from the first side of the diaphragm through the sound outlet 12 to the outside; on the other hand, the sound can be transmitted downward from the second side of the diaphragm via the magnetic circuit system. The seal 20 is configured to be in sealing connection with the structure that is in communication with the second side of the diaphragm and the electronics body 30, respectively. That is, one end of the sealing member 20 is connected to the magnetic circuit system or housing of the sounding device body 10, and the connected structure is capable of receiving sound transmitted from the second side of the diaphragm; the other end is for connecting with the electronic product main body 30. To form a rear acoustic cavity between the sounding device body 10 and the electronic product body 30. This embodiment does not specifically limit the shape and material of the sealing member. As long as the seal can be elastically and mechanically deformed, the volume of the sound chamber can be changed. In the sounding device, the size of the rear acoustic cavity often has an important influence on the acoustic performance of the sounding device. In this embodiment, the sealing member 20 is respectively sealedly connected with the back surface of the magnetic circuit system and the electronic product body, and the sealing member 20 can be used to change the volume of the rear acoustic cavity. , thereby changing the sound quality and loudness of the sounding device, and optimizing the user experience of the electronic sounding device.

Further, FIG. 4 is a schematic structural diagram of a sounding device seal provided by an embodiment of the present application. As shown in FIG. 4, the sealing member 20 has a plurality of pleats 21, and a plurality of pleats 21 are integrally formed.

It can be understood by those skilled in the art that, in a specific implementation, the number of pleats can be determined according to a plurality of factors, such as the thickness of the electronic product body 30 and the thickness of the sounding device body 10, which is not specifically limited in this embodiment.

In this embodiment, the two ends of the pleats 21 in the extending direction thereof are respectively sealedly connected to the sounding device body 10 and the electronic product body, for example, by bonding or the like, and the pleats 21 and the sounding device body 10 and the electrons are respectively used in this embodiment. The manner in which the product body 30 is sealed and connected is not specifically limited. The seal 20 is configured to be deformable by the pleats 21 . The pleated configuration is adapted to stretch and compress the seal 20 to change the volume of the rear acoustic cavity. For example, when subjected to compression by an external force, the sealing member 20 is compressively deformed and generates an elastic force, and the volume of the rear acoustic chamber is reduced. When the external force is released, the sealing member 20 is subjected to tensile deformation by its own elastic force, and the volume of the rear acoustic chamber is increased. Further, the sheet 211 on the pleats 21 should have a high strength to ensure that the surface of the sheet is less likely to be deformed when the sealing member 20 is stretched.

Specifically, the material of the sealing member 20 is a single material or a composite material. In this embodiment, the type of material used for the sealing member is not specifically limited, and a suitable material can be selected according to actual conditions, and only the overall strength and toughness of the sealing member can be ensured. For example, PP plastic (PP), ABS plastic (Acrylonitrile Butadiene Styrene plastic, ABS) and the like.

Optionally, the sealing member 20 is an elastic rubber sealing ring to change the volume of the rear acoustic cavity. Since the sealing property of the rear sound chamber has an influence on the sound quality and loudness of the sounding device, the elastic rubber sealing ring is used to seal the sounding device body and the electronic product body to achieve a good sealing effect. On the other hand, the elastic rubber seal has good deformation ability. In the compressed state, the elastic rubber sealing ring can effectively reduce the volume of the rear acoustic cavity and reduce the space occupied by the rear acoustic cavity. When the restraining force is released, the elastic force of the elastic rubber sealing ring causes the tensile deformation, thereby expanding the volume of the rear acoustic cavity. The effect of improving the acoustic performance of the sounding device is achieved.

In a specific implementation process, the sounding device body 10 and the electronic product body 30 can be electrically connected by using a flexible printed circuit board (FPCB) or a FPCB (Flexible Printed Circuit Board).

In the following, the FPCB electrical connection is taken as an example for detailed description.

In a possible embodiment, the sounding device body 10 is further provided with an electrical connector 11 configured to form an electrical connection with the electronic product body 30.

As shown in FIG. 2, the sounding device body 10 is provided with an electrical connector 11 which is disposed on the electronic product body 30 and which is electrically connected to a pad or electrical connection point on the electronic product body 30. A portion of the structure of the flexible printed circuit board is free and movable. This portion of the flexible printed circuit board forms a fixed connection and an electrical connection with the electrical connector 11. In this way, electrical connection between the electronic product body 30 and the sounding device body 10 can be achieved. In particular, when the seal 20 is deformed, the sounding device body 10 has a possibility of generating a relative displacement with respect to the electronic product body 30. The free portion of the flexible printed circuit board can move with the sounding device body 10, always maintaining a signal conduction between the sounding device body 10 and the electronic product body 30.

Specifically, in this embodiment, the flexible printed circuit board can be disposed on the main body of the electronic product and the body of the sounding device in different manners, such as bonding, snapping, soldering, etc., which is not specifically limited in this embodiment.

The application also provides an electronic product, which can be a mobile phone, a tablet computer or the like. The electronic product includes an electronic product main body 30 and the above-described sounding device 10. In particular, the electronic product body 30 has a receiving cavity 31, and the sealing member 20 is sealingly connected to the inner side of the accommodating cavity 31. The sounding device body 10 is disposed in the accommodating cavity 31, and the sealing component 20 is configured to be capable of Extending in a direction extending from the accommodating cavity 31, thereby increasing the volume of the rear acoustic cavity. When the seal 20 increases the volume of the rear cavity, the sounding device body 10 is configured to move relative to the receiving cavity 31. The sounding device body 10 may be moved outwardly from the accommodating cavity 31 for a distance or removed entirely out of the accommodating cavity 31.

5 is an exploded view of an electronic product according to an embodiment of the present application. As shown in FIG. 5, the electronic product body 30 has a receiving cavity 31. When the sealing member 20 is in a compressed state, the sealing member 20 and the sounding device body 10 are shown in FIG. When the shape and thickness of the electronic product are not changed, the upper surface of the sounding device body 10 is flush with the outer casing of the electronic product; when the sealing member 20 is extended to extend out of the receiving cavity, The sounding device body 10 is removed from the accommodating cavity 31, that is, the sounding device body 10 protrudes from the accommodating cavity 31, and the volume of the sound cavity increases after the sounding device.

The electronic product provided by the embodiment provides a sealing member with a telescopic function on the body of the sounding device and the main body of the electronic product, and is used for changing the volume of the sound chamber after the sounding device, thereby improving the sound quality and loudness of the sounding device, and optimizing the sounding device of the electronic product. User experience.

The embodiment shown in Figures 1-3 is an alternative embodiment of the present application. The sounding device body 10 can be protruded or retracted upward from the upper surface of the electronic product with the aid of the stretching and compression action of the sealing member 20. . The seal 20 may be coupled to the back side of the magnetic circuit system of the sounding device body 10. The back of the magnetic circuit system refers to the side of the magnetic circuit system remote from the diaphragm that is capable of receiving sound transmitted from the second side of the diaphragm. When the sealing member 20 is extended, the upper surface of the sounding device body 10 is higher than the edge of the accommodating cavity 31. The upper surface of the sounding device body 10 refers to a front cover in the housing of the sounding device body 10. The upper edge of the receiving cavity 31 refers to a portion where the receiving cavity is flush with the outer casing of the electronic product.

6 and 7 are schematic diagrams showing the structure of an electronic product main body and a sounding device unit in another embodiment of the present application. Another alternative embodiment is shown in Figures 6 and 7. The sounding device body 10 can be convexly or retracted from the side surface of the electronic product with the aid of the extension and compression of the sealing member 20. The seal 20 may be coupled to a side of the housing of the sounding device body 10. The housing may be provided with a port on the side that is connectable from the interior of the housing to the second side of the diaphragm. The partial structure is capable of receiving sound transmitted from the second side of the diaphragm. When the sealing member 20 is extended, the space between the side surface of the casing and the accommodating cavity 31 is increased, and the volume of the rear acoustic cavity is increased. The sound outlet 12 of the sounding device body 10 protrudes outside the accommodating chamber 31.

Optionally, the electronic product further includes a locking mechanism, the locking mechanism includes a first locking portion and a second locking portion, wherein the first locking portion and the second locking portion are respectively disposed on the sounding device body and On the main body of electronic products.

Specifically, the first locking portion may be a buckle or a hook, and the first locking portion is used in combination with the second locking portion. In this embodiment, the setting positions of the first locking portion and the second locking portion are not performed. limited.

The first locking portion and the second locking portion are configured to be hooked to each other to restrict the sounding device body in the accommodating cavity. When the sounding device body 10 is located in the accommodating cavity 31, the first locking portion is snap-connected with the second locking portion. The first locking portion and the second locking portion are configured to be detachable from each other to deform the sealing member to move the sounding device body out of the accommodating cavity, and at this time, the upper surface of the sounding device body is higher than the upper edge of the accommodating cavity .

In a possible embodiment, a sound outlet 12 is provided on the sounding device body 10 for transmitting sound from the sounding device body 10. A speaker port 311 is defined in the accommodating cavity 31. When the sounding device body 10 is placed in the accommodating cavity 31, the sounding port 12 communicates with the speaker port 311, so that the sound generated by the sounding device body 10 can be transmitted to the electronic product. Outside the subject. The shape of the speaker port 311 may be an opening or a slot, and may be selected according to the design of the actual electronic product body.

Specifically, as shown in FIG. 5, the shapes of the sounding port 12 and the speaker port 311 are matched to ensure that the sound generated by the sounding device body 10 can be smoothly transmitted out of the main body of the electronic product. The size of the speaker port 311 is not limited. It can be understood by those skilled in the art that the size and position of the sound outlet 12 on different sound emitting devices are different, and the position of the speaker port 311 is not limited in this embodiment.

Optionally, the shape of the sealing member 20 in this embodiment is matched with the shape of the opening of the sounding device body 10 and the accommodating cavity 31. The peripheral length and width of the sealing member 20 are smaller than the opening size of the accommodating cavity.

Although the specific embodiments of the present application have been described in detail by way of example, those skilled in the art should understand that the above examples are only for the purpose of illustration and not limitation. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

A sounding device for an electronic product, comprising: a sounding device body and a sealing member, the sounding device body comprising a casing, a magnetic circuit system and a diaphragm, the edge of the diaphragm and the magnetic circuit system being fixed at In the housing, an acoustic outlet is disposed on the housing, and a sound generated by the diaphragm is transmitted from the sound outlet, and a first side of the diaphragm communicates with the sound outlet, and the seal is Arranging a sealing connection with the structure of the second side of the sounding device body and the electronic product body, the sealing member forming a rear acoustic cavity between the sounding device body and the electronic product body, the sealing The piece is configured to change the volume of the rear acoustic cavity.
The sounding device according to claim 1, wherein the sealing member has a plurality of pleats, and the pleats are sealingly connected to the sounding device body and the electronic product body at both ends in the extending direction thereof, the sealing The piece is configured to be stretched and deformed by wrinkles.
A sounding device according to claim 1 or 2, wherein the seal material is a single material or a composite material.
A sounding device according to any one of claims 1 to 3, wherein the sealing member is an elastic rubber sealing ring to change the volume of the rear acoustic cavity.
The sounding device according to any one of claims 1 to 4, characterized in that the sounding device body is further provided with an electrical connector, the electrical connector being configured for making an electrical connection with the electronic product body.
An electronic product, comprising:

An electronic product body having a receiving cavity on the main body of the electronic product;

The sounding device according to any one of claims 1 to 5, wherein the sounding device body is disposed in the accommodating cavity, and the sealing member is sealingly connected to an inner side of the accommodating cavity;

The seal is configured to extend in a direction that extends out of the receiving cavity.
The electronic product according to claim 6, wherein said sealing member is coupled to a side of a back surface of a magnetic circuit system of said sounding device body, said sealing member being stretched to be configured to enable said sounding device body The upper surface is higher than the edge of the accommodating cavity.
The electronic product according to claim 6 or 7, wherein the sealing member is coupled to one side of a side surface of the housing of the sounding device body, and the sealing member is stretched to be configured to enable the sounding device body The sound outlet protrudes from the edge of the accommodating cavity.
The electronic product according to any one of claims 6 to 8, further comprising a locking mechanism, wherein the locking mechanism includes a first locking portion and a second locking portion, the first locking portion And the second locking portion is respectively disposed on the sounding device body and the electronic product body, and the first locking portion and the second locking portion are buckled;

When the first locking portion is disengaged from the second locking portion, the upper surface of the sounding device body is higher than the upper edge of the receiving cavity.
The electronic product according to any one of claims 6-9, wherein the accommodating cavity is further provided with a speaker port, and when the sounding device body is placed in the accommodating cavity, the out The sound port is in communication with the speaker port.
The electronic product according to any one of claims 6 to 10, wherein a shape of the sealing member matches a shape of the sounding device body and the accommodating cavity opening, and a peripheral length of the sealing member And the width is smaller than the opening size of the accommodating cavity.