LOUDSPEAKER MODULE

Abstract

Disclosed is a loudspeaker module which comprises a housing and a loudspeaker unit accommodated in the housing. The housing comprises a front cover, a first housing and a second housing, and a cavity is defined by the front cover, the first housing and the second housing. The loudspeaker unit is fixed in the cavity, and the cavity is divided into a front cavity and a rear cavity by the loudspeaker unit. The front cavity is a cavity defined by the loudspeaker unit, the front cover and the first housing. The loudspeaker unit comprises a vibration system and a magnetic circuit system. The front cover is provided with a cavity opposite to a mounting position of the loudspeaker unit, and the cavity is isolated from the front cavity and the rear cavity and is provided with a ventilation structure in communication with external environment. The loudspeaker module of the present invention has the advantage of good acoustic performance.

Claims

1. A loudspeaker module, comprising a housing and a loudspeaker unit accommodated in the housing, wherein the housing comprises a front cover, a first housing and a second housing, and a cavity is defined by the front cover, the first housing and the second housing, wherein the loudspeaker unit is fixed in the cavity, the cavity is divided into a front cavity and a rear cavity by the loudspeaker unit, and the front cavity is a cavity defined by the loudspeaker unit, the front cover and the first housing, wherein the loudspeaker unit comprises a vibration system and a magnetic circuit system, wherein the front cover is provided with a chamber opposite to a mounting position of the loudspeaker unit, the chamber is isolated from the front cavity and the rear cavity, and the chamber is provided with a ventilation structure in communication with external environment.

2. The loudspeaker module according to claim 1, wherein the chamber has a volume of 0.1 cubic centimeters.

3. The loudspeaker module according to claim 1, wherein an area of the chamber is smaller than that of the vibration system of the loudspeaker unit.

4. The loudspeaker module according to claim 1, wherein the ventilation structure is provided at a lateral side of the housing.

5. The loudspeaker module according to claim 1, wherein the ventilation structure is a ventilation opening.

6. The loudspeaker module according to claim 1, wherein the front cavity is provided with a sound hole in communication with the front cavity and the external environment, and the sound hole is provided at a lateral side of the housing.

7. The loudspeaker module according to claim 1, wherein the magnetic circuit system comprises a magnetic yoke, the second housing is provided with an opening at a position opposite to the magnetic yoke, and the magnetic yoke extends through the opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a perspective view of a specific embodiment of the loudspeaker module of the present invention;

[0018] FIG. 2 is a perspective view of another aspect of the loudspeaker module shown in FIG. 1;

[0019] FIG. 3 is a cross-sectional view of the loudspeaker module shown in FIG. 1; and

[0020] FIG. 4 is an exploded view of the front cover of the loudspeaker module shown in FIG. 1.

DETAILED DESCRIPTION OF EMBODIMENTS

[0021] Hereinafter, the contents of the present invention will be described in detail with reference to the accompanying drawings.

Embodiment

[0022] As shown in FIG. 1, a loudspeaker module according to an embodiment of the present invention comprises a housing which comprises a first housing 11, a second housing 12, and a front cover 2. The housing is provided with a loudspeaker unit 3 therein. A chamber in which the loudspeaker unit 3 is disposed is defined by the first housing 11, the second housing 12 and the front cover 2. As shown in FIG. 3, the chamber is divided into a front cavity 51 and a rear cavity 52 by the loudspeaker unit 3. The front cavity 51 is a chamber defined by the loudspeaker unit 3, the first housing 11, and the front cover 2. The front cavity 51 is provided with a sound hole in communication with the exterior, and the sound hole is used for spreading the sound of the loudspeaker unit 3.

[0023] As shown in FIG. 3, in the loudspeaker module of the present invention, the front cover 2 is provided with a chamber 4 opposite to the position of the loudspeaker unit 3. The chamber 4, the front cavity 51 and the rear cavity 52 are provided in isolation from each other. As shown in FIGS. 1, 2 and 4, the chamber 4 is provided with a ventilation opening 41 in communication with the exterior. In the present embodiment, the ventilation opening 41 is provided at a lateral side of the loudspeaker module. However, in the practical application process, the ventilation opening is other ventilation structure and provided in other position according to actual requirements, by which the advantages of the loudspeaker module of the present invention can also be realized. In the loudspeaker module of the present invention, the arrangement of the chamber 4 improves the volume and resonance of the front cavity. The space of the front cavity 51 is divided by the chamber 4, which effectively improves the frequency response curve of the product, and adjusts the high frequency performance of the product. The structure of the front cavity 51 of the loudspeaker module is optimized by the chamber 4, which effectively improves the resonance phenomenon of certain frequencies in the front cavity 51, enrichs the listening sensation of the loudspeaker product, improves the high frequency THD, and improves the performance of the loudspeaker module. In the loudspeaker module of the present embodiment, the sound hole of the front cavity 51 in communication with the exterior is provided at the lateral side of the housing of the loudspeaker module. The sound hole is a slit structure between the front cover 2 and the first housing 11. In the practical application process, the sound hole may be provided in other position based on the design requirements of the loudspeaker module, which does not affect the advantages of the loudspeaker module of the present invention.

[0024] As shown in FIG. 3 and FIG. 4, the chamber 4 is the structure of the front cover 2, and thus the loudspeaker module is assembled without adding other additional components, and without increasing steps for assembling the loudspeaker module.

[0025] In the practical application process, when the volume of the chamber 4 is 0.1 cubic centimeters, the chamber 4 maximizes the improvement of the acoustic performance of the loudspeaker module, and the cavity is small, which does not additionally increase an oversize external volume of the loudspeaker module.

[0026] As shown in FIG. 3, in the loudspeaker module of the present invention, the area of the chamber 4 is smaller than that of the vibration system of the loudspeaker unit. The area of the chamber 4 is smaller than that of the vibration system of the loudspeaker unit 3 so as to ensure that the cross-sectional area of the chamber 4 is smaller than that of the loudspeaker unit 3, and the chamber 4 occupies only the partial space of the cavity 51, which does not affect the volume of the loudspeaker unit 3 and the space of the rear cavity 52.

[0027] As shown in FIG. 3, in the loudspeaker module of the present embodiment, the loudspeaker unit 3 comprises a magnetic circuit system which comprises a magnetic yoke 31, the second housing 12 is provided with an opening opposite to the mounting position of the loudspeaker unit 3, and the magnetic yoke 31 extends through the opening of the second housing 12. The outer surface of the magnetic yoke 31 is flush with the outer surface of the second housing. This structure design increases the volume of the loudspeaker unit 3, and is conducive to improve the acoustic performance of the loudspeaker module. Further, the magnetic yoke 31 extends through the second housing 12, which facilitates dissipation of heat during the operation of the loudspeaker unit 3, thereby preventing the loudspeaker module from being deteriorated due to the high temperature of the loudspeaker unit 3, and improving the reliability of the loudspeaker module.

[0028] In the loudspeaker module of the present invention, the front cover defining the front cavity is provided with a chamber which is isolated from the front cavity, and the front cavity space is divided by the chamber, which effectively improves the frequency response curve of the loudspeaker module, and adjusts the high frequency performance of the loudspeaker module. In the meantime, the structure of the front cavity of the loudspeaker module is optimized by the chamber, which effectively improves the resonance phenomenon of certain frequencies in the front cavity, enrichs the listening sensation of the loudspeaker module, improves the high frequency THD, and improves the acoustic performance of the loudspeaker module. Therefore, the loudspeaker module of the present invention has the advantage of good acoustic performance.

[0029] The above-mentioned contents are only embodiments of the present invention and are not for limiting the present invention, thus the equivalent modification or variation made by those skilled in the art according to the present invention should be incorporated into the scope of protection recorded in the claims.