CN106993250B

CN106993250B - Loudspeaker assembly and mobile terminal

Info

Publication number: CN106993250B
Application number: CN201710349595.5A
Authority: CN
Inventors: 邱泽朔; 姜宇; 陈乾强; 杨璟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-05-17
Filing date: 2017-05-17
Publication date: 2023-01-10
Anticipated expiration: 2037-05-17
Also published as: CN106993250A

Abstract

The embodiment of the invention provides a loudspeaker assembly, which comprises a sound cavity support and a loudspeaker body, wherein a first sound cavity, a second sound cavity and a partition wall positioned between the first sound cavity and the second sound cavity are formed on one surface of the sound cavity support, a communication port is formed in the partition wall, the communication port is communicated with the first sound cavity and the second sound cavity, the loudspeaker body is contained in the first sound cavity, and a sound signal generated by the loudspeaker body is output after passing through the first sound cavity and the second sound cavity. The invention can reduce the size of each sound cavity under the condition of keeping the volume of the whole sound cavity of the loudspeaker component unchanged, and can more fully utilize the space on the sound cavity bracket because the size of a single sound cavity is obviously reduced.

Description

Loudspeaker assembly and mobile terminal

Technical Field

The invention relates to the field of sound generating equipment of electronic equipment, in particular to a loudspeaker and a mobile terminal with the loudspeaker.

Background

At present, mobile terminals, such as mobile phones, are usually equipped with a speaker for serving as a sound output device of the mobile terminal. Most of the existing loudspeakers adopt a totally enclosed integral sound cavity, such as a totally enclosed tetragonal sound cavity. The whole sound cavity of the existing speaker is usually formed by a sound cavity body (e.g. a sound cavity frame) and a whole piece of FPC (flexible printed circuit) covering one side of the sound cavity body. The whole sound cavity needs to occupy a large whole space, so that the internal space of the mobile terminal is not favorably and fully utilized, and the thinning design of the mobile terminal is hindered.

Disclosure of Invention

The invention aims to provide a loudspeaker assembly, wherein the space utilization rate of a sound cavity support can be improved.

Another object of the present invention is to provide a mobile terminal using the speaker assembly.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the invention provides a loudspeaker assembly which comprises a sound cavity support and a loudspeaker body, wherein a first sound cavity, a second sound cavity and a partition wall positioned between the first sound cavity and the second sound cavity are formed on one surface of the sound cavity support, a communication port is formed in the partition wall and is communicated with the first sound cavity and the second sound cavity, the loudspeaker body is contained in the first sound cavity, and sound signals generated by the loudspeaker body are output after passing through the first sound cavity and the second sound cavity.

The embodiment of the invention has the following advantages or beneficial effects:

in the embodiment of the invention, the first sound cavity and the second sound cavity are arranged, the communication port is arranged on the partition wall between the first sound cavity and the second sound cavity and is communicated with the first sound cavity and the second sound cavity, so that the size of each sound cavity is reduced under the condition of keeping the total volume of the sound cavities of the loudspeaker assembly unchanged, and the space on the sound cavity support can be more fully utilized due to the obvious reduction of the size of a single sound cavity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a first exploded view of a speaker assembly according to an embodiment of the invention.

Fig. 2 is a second exploded view of the speaker assembly shown in fig. 1.

Fig. 3 is a schematic structural diagram of the sound cavity support shown in fig. 1.

Fig. 4 is a schematic view of a mobile terminal having the speaker assembly shown in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Furthermore, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Referring to fig. 1 and 2 together, fig. 1 and 2 are two exploded schematic views of a speaker assembly 100 according to an embodiment of the invention. The speaker assembly 100 mainly includes a sound cavity support 10 and a speaker body 20, wherein a first sound cavity 11, a second sound cavity 12 and a partition wall 13 located between the first sound cavity 11 and the second sound cavity 12 are formed on one side of the sound cavity support 10. The partition wall 13 partitions the first sound chamber 11 and the second sound chamber 12, and a communication port 130 is formed in the partition wall 13, and the communication port 130 penetrates through the partition wall 13. The communication port 130 communicates the first sound cavity 11 and the second sound cavity 12, the speaker body 20 is accommodated in the first sound cavity 11, and a sound signal generated by the speaker body 20 is output after passing through the first sound cavity 11 and the second sound cavity 12. Specifically, the first sound cavity 11 and the second sound cavity 12 are used for correcting the sound signal generated by the speaker body 20 to improve the sound quality of the output sound.

In the embodiment of the present invention, by providing the first sound cavity 11 and the second sound cavity 12 and providing the communication port 130 on the partition wall 13 between the first sound cavity 11 and the second sound cavity 12, the communication port 130 communicates the first sound cavity 11 and the second sound cavity 12, so as to reduce the size of each sound cavity while maintaining the overall volume of the sound cavity of the speaker assembly 100, and the space on the sound cavity support 10 can be more fully utilized due to the significant reduction of the size of the individual sound cavities.

Please refer to fig. 3. Fig. 3 is a schematic structural diagram of a sound cavity support according to one possible implementation manner of the present invention. The speaker assembly 100 also includes a sealing plate 14. And a groove 15 is arranged on the other surface of the sound cavity bracket 10. In other words, the surface of the sound cavity support 10 away from the first sound cavity 11 and the second sound cavity 12 is provided with a groove 15. The groove 15 communicates the first sound cavity 11, the partition wall 13 and the second sound cavity 12. The sealing plate 14 is fixed on the other side of the sound cavity bracket 10 and covers the groove 15. It is understood that the space formed between the portion of the groove 15 located between the partition wall 13 and the sealing plate 14 is the communication port 130. That is, the communication port 130 is formed between the groove 15 and the sealing plate 14. The purpose of this arrangement is to reduce the difficulty of processing the communication port 130, improve the manufacturing efficiency of the speaker assembly 100, and reduce the manufacturing cost.

In one possible implementation manner of the present invention, the speaker assembly 100 further includes an FPC assembly 30. Specifically, the first sound cavity 11 is provided with a first opening K1, and the second sound cavity 12 is provided with a second opening K2. It is understood that the speaker body 20 is placed in the first sound cavity 11 through the first opening K1. The FPC assembly 30 covers the first opening K1 and the second opening K2 to seal the first sound cavity 11 and the second sound cavity 12.

More specifically, the FPC assembly 30 includes a first FPC 31 and a second FPC 32, and the first FPC 31 is stacked on the speaker body 20. The first FPC 31 at least partially covers the first opening K1. It can be understood that the speaker body 20 itself has a certain volume, so that the speaker body 20 can partially seal the first sound cavity 11, and the FPC covers the first opening K1 and seals the first sound cavity 11 together with the speaker body 20. The second FPC 32 covers the second opening K2 to seal the second sound cavity 12. That is, the second FPC 32 seals the second opening K2.

More specifically, the speaker assembly 100 further includes a fixing frame 40, and the fixing frame 40 fixes the FPC assembly 30 and the speaker body 20 on the sound cavity bracket 10. Specifically, the fixing frame 40 includes a first fixing frame 41 and a second fixing frame 42. Since the first FPC 31 and the second FPC 32 are made of a material with poor rigidity, the fixing frame 40 is required to assist in fixing the same to the sound cavity holder 10. Specifically, the first FPC 31 is press-fitted on the sound cavity holder 10 by the first fixing frame 41. In addition, the first fixing frame 41 performs press-fit fixing on the back surface of the speaker body 20, which can play a role of assisting in fixing the speaker body 20, and the speaker body 20 is fixed to the sound cavity support 10 through the first fixing frame 41. The second FPC 32 is press-fitted on the sound cavity holder 10 by the second fixing frame 42.

In a possible implementation manner of the present invention, the second FPC 32 board has a plurality of functional device structures including a motor pad, an antenna elastic sheet, and a radio frequency base.

Further specifically, the speaker assembly 100 further includes a vibration motor 50, the vibration motor 50 is accommodated in the second sound cavity 12, and the vibration motor 50 is electrically connected to a motor pad on the second FPC 32. The vibration motor 50 is powered through the second FPC 32. The vibration motor 50 is used to provide a vibration function such as an electric vibration function in the mobile terminal.

In one possible implementation manner of the present invention, the first FPC 31 is electrically connected to the speaker body 20, and the first FPC 31 is electrically connected to the second FPC 32. The second PFC is used for being electrically connected with a circuit board. Thus, the speaker body 20 is electrically connected to the circuit board through the first and

second FPCs

31, 32.

It is understood that the speaker assembly 100 may be applied to a mobile terminal, and the circuit board may be a main board of the mobile terminal. The mobile terminal can be a mobile phone, a tablet computer or a notebook computer and the like.

The speaker body 20 is connected to speaker-related circuits on the circuit board through the first FPC 31 and the second FPC 32 to implement a speaker function.

In one possible implementation of the present invention, the speaker assembly 100 further includes a cover plate 60. The cover plate 60 may be substantially elongated. The cover plate 60 covers the first FPC 31 and the second FPC 32, and the cover plate 60 covers the first opening K1 and at least partially covers the second opening K2. The cover plate 60 is used for accommodating and fixing the first fixing frame 41, the second fixing frame 42, the first FPC 31, the second FPC 32, the speaker body 20, the vibration motor 50, and the like between the cover plate 60 and the sound cavity holder 10, and further sealing the first sound cavity 11 and the second sound cavity 12.

It is understood that the speaker assembly 100 may further include other functional devices or other structures, which are not described herein since they are not relevant to the improvement of the present invention.

The invention also provides a mobile terminal. Referring to fig. 4, fig. 4 is a schematic structural diagram of a mobile terminal 500. The mobile terminal includes the aforementioned speaker assembly 100, a circuit board (not shown), and a housing 101.

The circuit board can be a main board of the mobile terminal. The speaker assembly 100 is the speaker assembly of any of the embodiments described above. The second FPC 32 is electrically connected between the first FPC 31 and the circuit board, and the speaker main body electrically connected to the first FPC 31 is connected to the circuit board through the first FPC 31 and the second FPC 32. Several functional device structures on the second FPC 32 are also electrically connected to the circuit board through the second FPC 32. Therefore, the speaker body 20 and the functional device structures are electrically connected with the corresponding functional circuits on the circuit board to realize the corresponding functions. That is, the circuit board is electrically connected to the speaker assembly 100 through the FPCs to provide power or corresponding functional support for the speaker assembly 100. It is understood that the speaker assembly 100 and the circuit board are fixed and housed inside the housing.

More specifically, the mobile terminal may include, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a camera, and other terminal products.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. A loudspeaker assembly is characterized by comprising a sound cavity support, a loudspeaker body, an FPC assembly and a sealing plate, wherein a first sound cavity, a second sound cavity and a partition wall located between the first sound cavity and the second sound cavity are formed on one face of the sound cavity support under the condition that the volume of the overall sound cavity of the loudspeaker assembly is not changed, a communication port is formed in the partition wall and communicated with the first sound cavity and the second sound cavity, the loudspeaker body is contained in the first sound cavity, sound signals generated by the loudspeaker body are output after passing through the first sound cavity and the second sound cavity, a groove is formed in the face, far away from the first sound cavity and the second sound cavity, of the sound cavity support, the groove is communicated with the first sound cavity, the partition wall and the second sound cavity, the sealing plate covers the groove, the communication port is formed between the groove and the sealing plate, the FPC assembly comprises a first FPC and a second FPC, a first opening is formed in the first sound cavity, a second sound cavity is provided with a second opening, the FPC assembly and a second FPC assembly are covered on a radio frequency antenna base, and a plurality of flexible printed circuit board (FPC) and a flexible printed circuit board (FPC) structure.

2. The speaker assembly of claim 1, wherein the first FPC is layered over the speaker body, the first FPC at least partially covering the first opening, the first FPC and the speaker body together sealing the first acoustic chamber, the second FPC covering the second opening to seal the second acoustic chamber.

3. The speaker assembly as recited in claim 2, further comprising a cover plate disposed over the first FPC and the second FPC, the cover plate covering the first opening and at least partially covering the second opening.

4. The speaker assembly as claimed in claim 1 or 2, further comprising a fixing bracket, said fixing bracket fixing said FPC assembly to said cavity bracket.

5. The speaker assembly as claimed in claim 4, wherein the fixing frame comprises a first fixing frame and a second fixing frame, the first fixing frame pressing the first FPC and the speaker body on the cavity frame, the second fixing frame pressing the second FPC on the cavity frame.

6. The speaker assembly of claim 2, further comprising a vibration motor, wherein the vibration motor is received in the second acoustic cavity, and wherein the vibration motor is electrically connected to the second FPC.

7. A mobile terminal comprising a speaker assembly according to any of claims 1-6 and a housing, the speaker assembly being housed in the housing.