CN211019215U

CN211019215U - Sound production device

Info

Publication number: CN211019215U
Application number: CN201921174462.XU
Authority: CN
Inventors: 陈志臣; 沈凯华
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-07-01
Filing date: 2019-07-24
Publication date: 2020-07-14
Anticipated expiration: 2029-07-24
Also published as: WO2021000215A1

Abstract

The utility model is suitable for the field of electroacoustic converters, and provides a sound production device, which comprises a lower cover plate, a lower cover plate which is connected with an upper cover plate in a covering manner to form an accommodating space, and a loudspeaker monomer which is assembled in the accommodating space; the loudspeaker unit comprises a basin frame and a vibrating diaphragm fixed on the basin frame; the inner side of the upper cover plate is provided with a mounting structure for mounting a basin frame, the basin frame is mounted on the mounting structure, and the vibration diaphragm divides the accommodating space into a first sound cavity and a second sound cavity; the vibrating diaphragm comprises a sealing part which extends to the side surface of the basin frame and is contacted with the mounting structure; the sealing part is extruded by the basin frame and the upper cover plate, and the first sound cavity is isolated from the second sound cavity. The utility model discloses utilize the free side of the speaker of the sealed assembly of sealing in accommodating space, realize the sealed isolation in two sound chambeies of sound generating mechanism back and forth, and sealed uniformity is good, the process is simple, machining efficiency is high.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustics equipment technical field especially relates to a sound generating mechanism.

[ background of the invention ]

The principle that the existing sound generating device converts an audio electrical signal into sound is roughly as follows: the diaphragm is vibrated according to the change of the audio electric signal and radiated out in a sound wave mode, thereby pushing air to vibrate the eardrum of a person, so that the person feels sound. In the assembly process, the vibrating diaphragm is taken as a boundary, the sound production device is divided into two sound cavities, and one sound cavity is used for signal conversion; the other sound cavity is used for transmitting sound to the outside.

Currently, the common assembly methods are: with the location of the long broadside of basin frame, through twice glue or the silica gel of moulding plastics, fix the basin frame in sound generating mechanism's shell, basin frame side simultaneously to form two independent sound cavity structures in sound generating mechanism, however, this kind of mode has the poor and complicated problem of process of sealed uniformity.

[ Utility model ] content

An object of the utility model is to provide a sound generating mechanism aims at solving and fixes the vibrating diaphragm seal on the basin frame through gluing or moulding plastics modes such as silica gel is sealed, the sound generating mechanism's that causes problem that sealed uniformity is poor, the process is complicated among the prior art.

The technical scheme of the utility model as follows: a sound generating device comprises an upper cover plate, a lower cover plate and a loudspeaker single body, wherein the lower cover plate is connected with the upper cover plate in a covering mode to form a containing space;

the loudspeaker unit comprises a basin frame and a vibrating diaphragm fixed on the basin frame;

the inner side of the upper cover plate is provided with a mounting structure for mounting the basin frame, and after the upper cover plate is mounted on the basin frame, the vibration diaphragm divides the accommodating space into a first sound cavity and a second sound cavity;

the vibrating diaphragm comprises a sealing part which extends to the side face of the basin frame and is in contact with the mounting structure;

the sealing part is extruded by the basin frame and the upper cover plate, so that the first sound cavity is isolated from the second sound cavity.

Further, the thickness of the sealing part is larger than that of the diaphragm which does not extend to the side face of the basin frame.

Furthermore, the position where the diaphragm extends to the side surface of the basin stand further comprises a bending part;

the sealing part is connected with the bending part.

Furthermore, the upper cover plate is also provided with a sound outlet communicated with the first sound cavity.

Furthermore, the material of the diaphragm is a polymer material.

The beneficial effects of the utility model reside in that: in the speaker monomer has been extended, the vibrating diaphragm covers the area of basin frame, make its packing form the sealing to basin frame side, this sealing is fixed around the basin frame, when the upper cover plate was installed on the basin frame, the upper cover plate all can exert pressure to the sealing with the basin frame, because the sealing is the partly of vibrating diaphragm, the vibrating diaphragm has stronger toughness usually, the uniformity is good, consequently when it receives the extrusion, speaker monomer side can be sealed, be the gap between basin frame side and the mounting structure promptly, connect the accommodating space of back formation with upper cover plate and lower cover plate lid and keep apart to first sound chamber and second sound chamber, realize the isolation of sound chamber around in the sound generating mechanism. The utility model discloses the vibrating diaphragm structure has been extended on sound generating mechanism's foundation structure, installs on the basin frame as the upper cover plate to connect when constituting sound generating mechanism with the lower cover plate lid, utilize the sealed assembly of sealing to realize the sealed isolation in two sound chambeies of sound generating mechanism back and forth in the free side of speaker in accommodating space, make the sealed uniformity of product good, process simple, machining efficiency high.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a sound generating device according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a sound generating device according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a partial schematic view of FIG. 3 at A;

fig. 5 is a schematic perspective view of a diaphragm according to an embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1, a sound generating device 100 according to a first embodiment of the present invention is provided.

Referring to fig. 1 to 5, the sound generating device 100 includes an upper cover plate 10, a lower cover plate 20 covering the upper cover plate 10 to form a receiving space, and a speaker unit 30 mounted in the receiving space; the speaker unit 30 includes a frame 31 and a diaphragm 32 fixed on the frame 31; the inner side of the upper cover plate 10 is provided with a mounting structure 11 for mounting the basin frame 31, the basin frame 31 is mounted on the upper cover plate 10, and the diaphragm 32 divides the accommodating space into a first sound cavity and a second sound cavity, wherein the first sound cavity is formed by a cavity between the upper cover plate 10 and the diaphragm 32, and the second sound cavity is formed by a cavity between the lower cover plate 20 and the diaphragm 32.

In a specific application, the material of the diaphragm may be a polymer material.

In the embodiment of the invention, the high polymer material is silica gel.

Referring to fig. 3 and 4, the inner side of the upper cover plate 10 is provided with a mounting structure 11 for mounting the frame 31, after the upper cover plate 10 is mounted on the frame 31, the upper cover plate 10 and the lower cover plate 20 form a housing part of the sound generating device 100, and the frame 31 is provided with a sound generating function structure of the sound generating device 100.

The vibrating diaphragm 32 is mounted on the frame 31 and disposed between the frame 31 and the upper cover plate 10, and includes a sealing portion 321 extending to the side of the frame 31, when the upper cover plate 10 is mounted on the frame 31, the sealing portion 321 is disposed between the mounting structure 11 and the frame 31 and is squeezed by an external force, the sealing portion 321 is tightly attached to the side of the mounting structure 11 and the frame 31, and at this time, the sealing portion 321 isolates a first sound cavity formed by the upper cover plate 10 and the vibrating diaphragm 32 from a second sound cavity formed by the lower cover plate 20 and the vibrating diaphragm 32.

In a specific application, the mounting structure for mounting the basin stand is step-shaped.

Referring to fig. 3 and 4, the thickness of the sealing portion 321 is greater than the thickness of the diaphragm 32 that does not extend to the side portion of the frame 31, and the sealing portion 321 is thickened to ensure that it can seal the gap between the frame 31 and the upper cover plate 10, thereby enhancing the sealing effect of the sealing portion 321.

Referring to fig. 4 and 5, the position where the diaphragm 32 extends to the side of the frame 31 further includes a bending portion 322, and the sealing portion 321 is connected to the bending portion 322. Wherein, the bending portion 322 both can be laminated with the side of basin frame 31, also can be laminated with the one side of installing vibrating diaphragm 32 in the basin frame 31, in fig. 5, the embodiment of the utility model provides a only exemplary a structural relation who shows bending portion 322 and basin frame 31, when upper cover plate 10 installed on basin frame 31, bending portion 322 still reduced the friction between sealing 321 and the upper cover plate 10, reduced the wearing and tearing that vibrating diaphragm 32 received in the assembling process.

In a specific application, one sound cavity of the sound generating device is used for transmitting sound, and the other sound cavity is used for generating sound, so that the front sound cavity and the rear sound cavity in the sound generating device need to be isolated.

In the embodiment of the present invention, the first sound cavity formed by the upper cover plate 10 and the vibrating diaphragm 32 is used for transmitting sound, and therefore, please refer to fig. 1 and fig. 2, the upper cover plate 10 of the embodiment of the present invention is further provided with a sound outlet 12 communicating with the first sound cavity.

In specific application, the basin frame and the vibrating diaphragm are necessary structures of the sound generating device, and are combined with other structures of the sound generating device to realize the sound generating function of the sound generating device.

As shown in fig. 2, fig. 3 and fig. 4, the embodiment of the present invention further shows other structures of the speaker unit 30 in the generating device 100, the speaker unit 30 further includes a vibration system 33 and a magnetic circuit system 34 fixed in the basin frame 31, the vibration system 33 includes the present invention provides a diaphragm 32, a dome 331 placed on the diaphragm 32, and a voice coil 332 driving the vibration of the diaphragm 32, wherein the magnetic circuit system 34 is used for providing a drive for the voice coil 332, vibrating the voice coil 332, and then driving the diaphragm 32 to vibrate to generate sound, and transmit the sound through the sound outlet 12, thereby completing the sound generating function of the speaker unit 30.

The magnetic circuit system 34 and the voice coil 332 in the vibration system 33 are located in a second sound cavity formed by the lower cover plate 20 and the diaphragm 32, and the ball top 331 in the vibration system 33 is located in a first sound cavity formed by the upper cover plate 10 and the diaphragm 32.

The material of the ball top is alloy or composite material, the alloy can be aluminum alloy, titanium alloy, magnesium alloy or titanium alloy, and the like, and the composite material is composite material. The composite material is an organic fiber composite material or an elastic fiber composite material and the like.

To sum up, the embodiment of the utility model provides an in the sound generating mechanism has extended the speaker monomer, the vibrating diaphragm covers the area of basin frame, make its packing form the sealing to basin frame side, this sealing is fixed around the basin frame, when the upper cover plate is installed on the basin frame, the upper cover plate all can exert pressure to the sealing with the basin frame, because the sealing is a part of vibrating diaphragm, the vibrating diaphragm has stronger toughness usually, the uniformity is good, consequently when it receives the extrusion, can seal speaker monomer side, be the gap between basin frame side and the mounting structure promptly, connect the accommodating space of back formation with the lower cover plate lid and keep apart to first sound chamber and second sound chamber, realize the isolation of sound chamber around in the sound generating mechanism. The utility model discloses the vibrating diaphragm structure has been extended on sound generating mechanism's foundation structure, installs on the basin frame as the upper cover plate to connect when constituting sound generating mechanism with the lower cover plate lid, utilize the sealed assembly of sealing to realize the sealed isolation in two sound chambeies of sound generating mechanism back and forth in the free side of speaker in accommodating space, make the sealed uniformity of product good, process simple, machining efficiency high.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A sound production device is characterized by comprising an upper cover plate, a lower cover plate and a loudspeaker single body, wherein the lower cover plate is connected with the upper cover plate in a covering mode to form an accommodating space, and the loudspeaker single body is assembled in the accommodating space;

the inner side of the upper cover plate is provided with a mounting structure for mounting the basin frame, the basin frame is mounted on the mounting structure, and the vibration diaphragm divides the accommodating space into a first sound cavity and a second sound cavity;

the sealing part is extruded by the basin frame and the upper cover plate, and the first sound cavity is isolated from the second sound cavity.

2. The sound generating apparatus according to claim 1, wherein the sealing portion has a thickness larger than a thickness of the diaphragm that does not extend to the side of the frame.

3. The sound production device of claim 1, wherein the position where the diaphragm extends to the side surface of the frame further comprises a bending part;

the sealing part is connected with the bending part.

4. The sound-generating apparatus as claimed in claim 1, wherein the upper cover plate further has a sound outlet therein, which communicates with the first sound chamber.

5. The sound production device as claimed in claim 1, wherein the diaphragm is made of a polymer material.