WO2014036679A1

WO2014036679A1 - Sound chamber structure

Info

Publication number: WO2014036679A1
Application number: PCT/CN2012/080947
Authority: WO
Inventors: 李凌峰; 温建斌
Original assignee: 海能达通信股份有限公司
Priority date: 2012-09-04
Filing date: 2012-09-04
Publication date: 2014-03-13

Abstract

The present invention relates to a sound chamber structure, comprising a main body provided with sound holes on the side wall, and a loudspeaker disposed in the main body; the side wall and one side of the loudspeaker are provided with a gap therebetween to form a front sound chamber; the other side of the loudspeaker is provided with a back sound chamber in communication with the front sound chamber via a single gap; the loudspeaker is provided with at least one sound guide tube extending from the front sound chamber to the back sound chamber. In the present invention, the front sound chamber communicates with the back sound chamber via the sound guide tube; the vibration of the loudspeaker causes the sound guide tube and the back sound chamber to resonate; and sound waves with sufficient strength are emitted from the sound guide tube and are then superimposed onto the strong sound waves emitted by the front sound chamber, thus improving low frequency and solving the problems of insufficient low frequency and low efficiency of a small sound chamber.

Description

Sound cavity structure

Technical field

The present invention relates to a portable communication device, and more particularly to a sound cavity structure of a portable communication device.

Background technique

The traditional communication device structure cavity is designed with a sealed back cavity. The cavity design generally has only a sealed back cavity, and only the front of the speaker is used to make sound, so that the sound waves in the back cavity cannot be radiated, and the sound energy cannot be fully obtained. The use of the sound energy of the entire back cavity is lost, the efficiency of the cavity is lower compared; and because the back cavity is sealed, the force in the box will reduce the original force of the speaker unit vibration system. The damping is increased, so that the resonance frequency of the entire system is increased, and therefore, the low frequency effect is deteriorated. Moreover, the structure cavity is only suitable for some devices with a large volume and a sufficient volume of the cavity. For a small-sized communication device, since the cavity space is insufficient, in order to improve the sound quality effect, provide the low-frequency part and the overall efficiency, it is necessary to increase The volume of the cavity is limited by the space of the whole machine, so the existing structural cavity is insufficient.

Summary of the invention

The technical problem to be solved by the present invention is to provide a sound cavity structure for the defects of the above-mentioned sound cavity structure of the prior art that the low frequency effect is poor and the whole machine efficiency is not high.

The technical solution adopted by the present invention to solve the technical problem is: constructing a sound chamber structure, comprising: a main body on which a sound hole is opened on the side wall; and a speaker disposed in the main body; the side wall and the a gap is provided between one side of the speaker to form a front sound chamber, and the other side of the speaker is provided with a rear sound chamber communicating with the front sound chamber through a unique gap, and the speaker is provided with at least one slave a sound tube extending from the front sound chamber to the rear sound chamber.

The sound chamber structure of the present invention, wherein the sound guiding tube is L-shaped.

The sound chamber structure of the present invention, wherein the sound chamber structure further comprises a PCB board disposed in the main body, one side of the PCB board is attached to an inner side wall of the bottom of the main body, and the speaker is One side is in contact with the inner side wall of the top of the main body, and the gap between the PCB board and the speaker for connecting the front sound chamber and the rear sound chamber is provided.

In the sound chamber structure of the present invention, the speaker is further attached with a speaker gasket on an outer surface of the left side of the main body.

In the sound chamber structure of the present invention, the position where the speaker is attached to the inner side wall of the top of the main body is further coated with a sealant.

In the sound chamber structure of the present invention, the inner side wall of the side wall of the main body body is further covered with a horn net covering the sound hole.

In the sound chamber structure of the present invention, the edge of the sound hole that is adhered to the speaker net is further coated with a sealant.

According to the sound chamber structure of the present invention, the main body is provided with a fixing portion for fixing the speaker, and the speaker is fixed to the fixing portion by a support pad.

this The sound chamber structure of the present invention, wherein the main body includes a front cover that is open on one side, and a rear cover that is fastened to an open side of the front cover, and a rear cover is further disposed between the rear cover and the front cover There are silicone gaskets.

The implementation of the sound chamber structure of the present invention has the following beneficial effects: the front sound chamber in the present invention is connected to the rear sound chamber through the sound guiding tube, and the vibration of the speaker is used to resonate the sound guiding tube and the rear sound chamber, and radiate from the sound guiding tube. Sound waves of sufficient energy are then superimposed with the energy sound waves radiated from the front sound cavity, thereby improving the low frequency and improving the low frequency efficiency of the small sound cavity.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural view of a preferred embodiment of a sound chamber structure of the present invention;

2 is an enlarged view of a portion A of FIG. 1 in a preferred embodiment of a sound chamber structure of the present invention.

detailed description

As shown in FIG. 1, referring to FIG. 2, in a preferred embodiment of the present invention, the sound chamber structure includes a main body 100 having a sound hole formed in the side wall 101, and a speaker 200 disposed in the main body 100. For convenience of description, the present invention is based on the direction of the view in FIG. 1, and thus the side wall 101 of the main body 100 is the side wall of the left side of the main body 100 of FIG. The main body 100 can be the main body of various portable communication devices, such as a mobile phone, a walkie-talkie, and the like. A gap is formed between the side wall 101 and one side of the speaker 200 to form a front sound chamber 102, and the other side of the speaker 200 is provided with a rear sound chamber 103 communicating with the front sound chamber 102 through a unique gap 106, on the speaker 200 At least one sound guiding tube 104 extending from the front sound chamber 102 to the rear sound chamber 103 is provided. The front sound chamber 102 and the rear sound chamber 103 communicate with each other through a unique gap 106, and the sound of the speaker 200 causes the sound tube 104 and the rear sound chamber 103 to resonate, and sound waves of sufficient energy are radiated from the sound tube 104, and After the superposition of the energy sound waves radiated by the sound chamber 102, the energy after the superposition is more powerful and the low frequency is also improved, so that the problem that the low frequency of the small sound cavity is not efficient is greatly improved. It should be noted that the number and shape of the sound guiding tubes 104 are not limited, and the designer can determine the number of the sound guiding tubes 104 according to specific sound effect requirements. When there are multiple sound guiding tubes 104, they can be arranged side by side in the speaker. The layout on the 200. In the present embodiment, the sound guiding tube 104 is L-shaped.

Further, the sound chamber structure further includes a PCB board 105 disposed in the main body 100. As can be seen from FIG. 1, one side of the PCB board 105 is attached to the inner side wall of the bottom of the main body 100, and one side of the speaker 200 The inner side wall of the top of the main body is fitted, and a gap 106 for connecting the front sound chamber 102 and the rear sound chamber 103 is disposed between the PCB board 105 and the speaker 200. It is foreseeable that if there are other connected gaps between the current sound chamber 102 and the rear sound chamber 103, the sound energy will be degraded and a good resonance effect cannot be achieved. In addition, in order to prevent the front sound chamber 102 from leaking to the rear sound chamber 103, the position where the speaker 200 is attached to the inner side wall of the top of the main body 100 is also coated with a sealant. The speaker gasket 107 is also attached to the outer surface of the speaker 200 toward the left side of the main body 100. As shown in FIG. 2, the inner side wall of the side wall 101 of the main body 100 is also covered with a horn net 108 covering the sound hole. The edge of the sound hole and the horn mesh 108 is also coated with a sealant.

In a preferred embodiment of the present invention, the main body 100 includes a front cover 111 that is open on one side, and a rear cover 112 that is fastened to the open side of the front cover 111. A silicone gasket is also disposed between the rear cover 112 and the front cover 111. It is not shown in the figure). The function of the silicone gasket is to prevent the rear cover 112 from leaking air, so that the gas of the rear sound chamber 103 can only be connected to the front sound chamber 102 through the sound guiding tube 104, so that the rear sound chamber 103 and the sound tube 104 are generated. Resonance, thereby radiating more powerful sonic energy into the front cavity 102. Further, a fixing portion 109 for fixing the speaker 200 is provided inside the main body 100, and the speaker 200 is fixed to the fixing portion 109 by the support pad 110. At the time of mounting, the support pad 110 is attached to the speaker magnet, and then the entire portion is attached to the fixing portion 109.

The above embodiments are merely illustrative of the technical concept and the features of the present invention. The purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention without limiting the scope of the present invention. Equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the appended claims.

Claims

A sound chamber structure, comprising: a main body (100) having a sound hole formed in a side wall (101); and a speaker (200) disposed in the main body (100); A gap is formed between the side wall (101) and one side of the speaker (200) to form a front sound chamber (102), and the other side of the speaker (200) is provided with a unique gap (106) a sound chamber (103) communicating with the front sound chamber (102), and the speaker (200) is provided with at least one sound guide extending from the front sound chamber (102) to the rear sound chamber (103) Tube (104).

2. A sound chamber structure according to claim 1 wherein said sound tube (104) is L-shaped.

3. The sound chamber structure according to claim 1, wherein the sound chamber structure further comprises a PCB board (105) disposed in the main body (100), one side of the PCB board (105) Adhering to an inner sidewall of the bottom of the main body (100), one side of the speaker (200) is fitted to an inner sidewall of the top of the main body (100), the PCB board (105) and the speaker The gap (106) for connecting the front sound chamber (102) and the rear sound chamber (103) is provided between (200).

4. A sound chamber structure according to claim 3, characterized in that the speaker (200) is also attached to the outer surface of the left side of the main body (100) with a speaker washer (107).

The acoustic cavity structure according to claim 3, wherein the speaker (200) is further coated with a sealant at a position where the inner side wall of the main body (100) is fitted.

The sound chamber structure according to claim 1, wherein the inner side wall of the side wall (101) of the main body (100) is further covered with a speaker net covering the sound hole (108). ).

7. A sound chamber structure according to claim 6, wherein the edge of the sound hole that is attached to the horn mesh (108) is further coated with a sealant.

The sound chamber structure according to claim 1, wherein the main body (100) is internally provided with a fixing portion (109) for fixing the speaker (200), and the speaker (200) is supported by A pad (110) is fixed to the fixing portion.

The acoustic cavity structure according to claim 1, wherein the main body (100) includes a front cover (111) that is open on one side, and a rear cover that is fastened to the open side of the front cover (111). A cover (112), a silicone gasket is further disposed between the back cover (112) and the front cover (111).