CN106412777B

CN106412777B - Mobile terminal

Info

Publication number: CN106412777B
Application number: CN201611115255.8A
Authority: CN
Inventors: 孔令兵; 王行伟
Original assignee: Hisense Mobile Communications Technology Co Ltd
Current assignee: Hisense Mobile Communications Technology Co Ltd
Priority date: 2016-12-07
Filing date: 2016-12-07
Publication date: 2020-07-31
Anticipated expiration: 2036-12-07
Also published as: CN106412777A

Abstract

The embodiment of the invention provides a mobile terminal which comprises a front shell, a loudspeaker support, a PCB (printed circuit board), a first sealing element and a second sealing element, wherein the loudspeaker is placed on the loudspeaker support in an inverted mode, the loudspeaker support is fixed on the front shell, the PCB is fixed on the front shell, an opening is formed in the PCB, a sound outlet channel is formed in the front shell, sound emitted by the loudspeaker can be transmitted out of the front shell through the opening and the sound outlet channel, the first sealing element is sealed between the loudspeaker and the PCB, and the second sealing element is sealed between the sound outlet channel and the PCB. The mobile terminal provided by the embodiment of the invention is used for solving the problem that the thickness of the whole machine is increased due to the fact that the loudspeaker is sealed by using foam for realizing bottom sound output in the prior art.

Description

Mobile terminal

Technical Field

The invention relates to the field of terminal structure design, in particular to a mobile terminal.

Background

With the continuous development of the technology, the mobile terminal is thinner and thinner, the requirement on the performance is higher and higher, and the audio is used as a part of the mobile terminal, and the performance is continuously improved to meet the user experience. The mobile terminal with the bottom sound output has better user experience because the sound directly faces the consumer after being output, and more mobile terminals adopt the scheme of the bottom sound output.

The currently common bottom-out sound structure schemes include the following two types:

1. BOX scheme

The technical scheme is that the loudspeaker is sealed in the upper shell and the lower shell, the upper shell and the lower shell are sealed through glue or double faced adhesive tape, the loudspeaker is conducted with the circuit board through the FPC and the elastic sheet on the circuit board, the technical scheme has the advantages that effective sealing of sound can be guaranteed, and the technical scheme has the defect of high cost.

2. Support dispensing sealing scheme

The technical scheme is that a circuit board at the position of a loudspeaker is cut off, the loudspeaker is dropped down, and the loudspeaker is connected to the circuit board through an FPC. If the front sound cavity is sealed in a foam mode, the shell needs to be extended out for horizontally arranging foam to achieve the sealing effect, and the thickness of the extended shell, the thickness of the foam and the height specified by the sound outlet channel are added, so that the thickness of the whole machine needs to be increased.

Disclosure of Invention

The embodiment of the invention provides a mobile terminal, which is used for solving the problem that the thickness of the whole machine is increased due to the fact that a loudspeaker is sealed by foam for realizing bottom sound output in the prior art.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides a mobile terminal which comprises a front shell, a loudspeaker support, a PCB (printed circuit board), a first sealing element and a second sealing element, wherein the loudspeaker is placed on the loudspeaker support in an inverted mode, the loudspeaker support is fixed on the front shell, the PCB is fixed on the front shell, an opening is formed in the PCB, a sound outlet channel is formed in the front shell, sound emitted by the loudspeaker can be transmitted out of the front shell through the opening and the sound outlet channel, the first sealing element is sealed between the loudspeaker and the PCB, and the second sealing element is sealed between the sound outlet channel and the PCB.

According to the mobile terminal provided by the embodiment of the invention, the loudspeaker is inversely placed on the loudspeaker support, the loudspeaker support is fixed on the front shell, the PCB is provided with the opening, the front shell is provided with the sound outlet channel, so that the sound emitted by the loudspeaker is transmitted out of the shell through the opening and the sound outlet channel, and bottom sound outlet is realized. For the sealing of the front sound cavity, sealing is performed by the first sealing member and the second sealing member. A first seal seals between the speaker and the PCB, and a second seal seals between the sound outlet channel and the PCB. Therefore, the gap between the loudspeaker and the PCB and the gap between the PCB and the front shell can be sealed by using foam as a sealing element, horizontally arranging the foam, and sealing the gap between the PCB and the front shell, because the distance between the loudspeaker and the front shell and the thickness of the front shell are larger, the requirement of sound output to the bottom can be met by utilizing the opening of the PCB and the sound output channel arranged on the front shell, and the sealing effect can be achieved without additionally increasing the thickness of the whole machine.

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 schematic view of a speaker bottom sound-emitting section structure of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a speaker of a mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a PCB board structure of a mobile terminal according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second sealing member of the mobile terminal according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a front case of a mobile terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a speaker support of a mobile terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a mobile terminal, as shown in fig. 1 to 6, including a front case 01, a speaker 02, a speaker holder 03, a PCB 04, a first sealing member 05, and a second sealing member 06, where the speaker 02 is placed upside down on the speaker holder 03, the speaker holder 03 is fixed on the front case 01, the PCB 04 is provided with an opening 41, the front case 01 is provided with a sound outlet channel 11, sound emitted by the speaker 02 can be transmitted out of the front case 01 through the opening 41 and the sound outlet channel 11, the first sealing member 05 is sealed between the speaker 02 and the PCB 04, and the second sealing member 06 is sealed between the sound outlet channel 11 and the PCB 04.

Further, as shown in fig. 2, the speaker 02 includes a diaphragm 21, and the diaphragm 21 faces away from the speaker holder 03 and toward the PCB 04. Therefore, the loudspeaker is placed in an inverted mode, bottom sound is achieved by utilizing the space, and the front sound cavity and the rear sound cavity are conveniently sealed.

Furthermore, the loudspeaker is fixed on the loudspeaker bracket through a double-sided adhesive tape. The fixing mode is simple, easy to realize, low in cost and good in fixing effect.

Further, as shown in fig. 3, an opening 41 in the PCB 04 is provided at a position corresponding to the speaker 02. In this way, the sound emitted from the front sound cavity of the speaker can be conveniently transmitted out through the opening 41.

Specifically, the shape of the opening is consistent with that of the loudspeaker and is square, so that the sound transmission effect is better.

It should be noted that: the shape of the opening is not limited to conform to the shape of the speaker, and may be other shapes besides the square shape, which is not specifically limited by the present invention.

Further, as shown in fig. 1, a sound outlet hole 12 is formed in the front case 01, and the sound outlet passage 11 is communicated with the sound outlet hole 12. Thus, the sound emitted from the speaker can be transmitted to the sound outlet hole through the sound outlet passage and transmitted to the user through the sound outlet hole.

Further, a dust-proof net (not shown) is further included, and the dust-proof net is attached to the sound outlet hole and used for preventing dust from entering the interior of the casing through the sound outlet hole 12.

Further, the first sealing member 05 and the second sealing member 06 are made of foam, and the first sealing member 05 is fixed between the loudspeaker 02 and the PCB board 04 around the loudspeaker 02. First sealing member, second sealing member adopt the bubble cotton to regard as the sealing member, and the cost is lower to it is also more convenient that the level sets up the bubble cotton. First sealing member encircles the speaker round and fixes between speaker and PCB board for sealed effect is better, is difficult to leak the sound.

In particular, the shape of the first sealing element is matched with that of the loudspeaker, so that a better sealing effect can be achieved.

In particular, the shape of the second sealing element is consistent with the shape of the cross section of the inlet of the sound outlet channel, so that the sealing effect is better.

Further, a third sealing member 07 is further included, and the third sealing member 07 is fixed between the speaker holder 03 and the PCB 04. Therefore, the rear sound cavity of the loudspeaker can be sealed, and sound leakage is prevented.

Further, a double-sided tape (not shown) is included, and the first sealing member 05 is fixed between the speaker 02 and the PCB board 04 by the double-sided tape. The double-sided adhesive tape fixing mode is easy to realize and low in cost.

Further, an FPC22 is provided on the speaker 02, and the FPC22 is electrically connected to the PCB 04. Like this, switch on speaker and mainboard, the mainboard can supply power to the speaker like this to make the speaker turn into the acoustic signal with the signal of telecommunication, sound.

Further, as shown in fig. 6, the speaker holder 03 is fixed to the front case 01 by screws. The mode is simple to fix, easy to realize and good in fixing effect.

Further, the third sealing member 07 is foam. The rear sound cavity of the loudspeaker is sealed by foam, so that the loudspeaker is low in cost, easy to realize, good in sealing effect and not easy to leak sound.

Further, the automobile seat further comprises a rear shell 08, and the rear shell 08 is fixed on the front shell 01.

Specifically, the mobile terminal is a mobile phone, a PAD, or the like.

The assembly process specifically comprises:

1. the PCB double faced adhesive tape and the second sealing element are assembled on the front shell, the PCB double faced adhesive tape is used for fixing the PCB, and the second sealing element is used for sealing a gap between the front shell sound outlet channel and the PCB.

2. The PCB is assembled on the front shell, and the front shell is provided with the positioning column and the PCB double-sided adhesive tape, so that the PCB can be fixed.

3. The first seal member is fitted to the speaker, and the third seal member for sealing, the speaker FPC, and the speaker are fitted to the speaker holder.

4. And assembling the assembled loudspeaker support on the front shell, and fixing the loudspeaker support on the front shell through screws. The loudspeaker is conducted with the PCB through the FPC.

Furthermore, a spring plate (not shown in the figure) is arranged on the PCB, and the FPC is conducted with the PCB through the spring plate. Therefore, the conduction mode is simple, easy to realize, low in cost and good in conduction effect.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A mobile terminal is characterized by comprising a front shell, a loudspeaker support, a PCB, a first sealing element and a second sealing element, wherein the loudspeaker is placed on the loudspeaker support in an inverted mode, the loudspeaker support is fixed on the front shell, the PCB is fixed on the front shell, an opening is formed in the PCB, a sound outlet channel is formed in the front shell, and the shape of the cross section of the opening is consistent with that of the inlet of the sound outlet channel; sound emitted by the speaker can pass out of the front housing through the opening and the sound outlet channel, the first seal is sealed between the speaker and the PCB, and the second seal is sealed between the sound outlet channel and the PCB; the shape of the second sealing element is consistent with that of the cross section of the sound outlet channel, and the second sealing element is made of foam.

2. The mobile terminal of claim 1, wherein the speaker comprises a diaphragm facing away from the speaker mount and toward the PCB board.

3. The mobile terminal of claim 1, wherein the front case is provided with a sound outlet hole, and the sound outlet channel is communicated with the sound outlet hole.

4. The mobile terminal of claim 1, wherein the first seal is foam, the first seal being secured between the speaker and the PCB board around the speaker.

5. The mobile terminal of claim 1, further comprising a third seal secured between the speaker bracket and the PCB board.

6. The mobile terminal of claim 5, further comprising a double-sided adhesive tape, wherein the first sealing member is fixed between the speaker and the PCB board by the double-sided adhesive tape.

7. The mobile terminal according to claim 1, wherein the speaker is provided with an FPC, and the FPC is electrically connected to the PCB.

8. The mobile terminal of claim 1, wherein the speaker bracket is fixed to the front housing by screws.

9. The mobile terminal of claim 5, wherein the third seal is foam.

10. The mobile terminal of claim 1, further comprising a rear housing fixed to the front housing, wherein the opening is disposed at a position corresponding to the speaker.