CN219843726U - Speaker module and electronic equipment - Google Patents

Abstract

The utility model belongs to the technical field of sound-electricity conversion, and particularly relates to a loudspeaker module and electronic equipment, wherein the loudspeaker module comprises a shell, a moving coil sounding monomer and a piezoelectric ceramic sounding monomer, wherein the shell is provided with an inner cavity and a sounding hole communicated with the inner cavity; the movable coil sounding unit is arranged in the inner cavity of the shell, a front sound cavity is formed between the sounding surface of the movable coil sounding unit and the shell, and a sound guide channel is formed between the front sound cavity and the sound outlet; the piezoelectric ceramic sounding monomer is arranged on the outer side of the sounding hole. The front end of the shell sound hole is arranged at the front end of the shell sound hole through the piezoelectric ceramic sound production monomer, and then the front end of the shell sound hole corresponds to the whole sound hole of the electronic equipment, so that the high-frequency area performance of the electronic equipment can be effectively improved, and furthermore, the high-pitched sound is improved obviously.

Description

Speaker module and electronic equipment

Technical Field

The utility model belongs to the technical field of sound-electricity conversion, and particularly relates to a loudspeaker module and electronic equipment.

Background

Along with consumer upgrading, people have great demands on improving the tone quality of mobile phones and tablet computers, and an audio module formed by combining a loudspeaker monomer with a box body can effectively improve the low-frequency performance of the mobile phones and the tablet computers, but the side-sounding mode enables a high-frequency area to be influenced by a front sound cavity pipeline and to be obviously lost, and the high-sound effect is poor. Although the addition of the conventional high-pitch unit can improve the high-pitch performance, the size of the conventional high-pitch unit is limited, so that the audio module formed by combining the high-pitch and low-pitch loudspeaker units cannot realize positive sound emission, and further, higher-level lifting is difficult to realize, and meanwhile, the problem that the audio module formed by combining the high-pitch and low-pitch loudspeaker units occupies larger space still exists.

Disclosure of Invention

The utility model aims to provide a loudspeaker module and electronic equipment, which are used for solving the problem that a loudspeaker in the prior art cannot meet the requirement of sound quality.

The first aspect of the present utility model provides a speaker module, including:

a housing having an inner cavity and an acoustic port in communication with the inner cavity;

the moving coil sounding unit is arranged in the inner cavity of the shell, a front sound cavity is formed between the sounding surface of the moving coil sounding unit and the shell, and a sound guide channel is formed between the front sound cavity and the sound outlet;

the piezoelectric ceramic sounding monomer is arranged on the outer side of the sounding hole.

The speaker module provided by the utility model can also have the following additional technical characteristics:

in one specific embodiment of the utility model, the piezoelectric ceramic sounding monomer comprises a piezoelectric ceramic piece and a metal piece combined on the periphery of the piezoelectric ceramic piece.

In one specific embodiment of the utility model, the sound emitting holes are strip star holes.

In one specific embodiment of the utility model, the metal sheet is rectangular and is matched and fixed with the outer Zhou Shi of the sound outlet hole; the piezoelectric ceramic piece is rectangular, and two rectangular transmission holes are formed in the middle of the piezoelectric ceramic piece.

In one embodiment of the present utility model, the metal sheet, the piezoelectric ceramic sheet, and the transmission hole are all bilaterally symmetrical about a central axis of the metal sheet.

In one embodiment of the present utility model, a support plate is disposed in the sound guide channel, and the support plate extends along the sound propagation direction.

In one specific embodiment of the utility model, a rear acoustic cavity separated from the front acoustic cavity is further formed between the moving coil sounding unit and the shell, and the rear acoustic cavity is filled with a sound absorbing material.

In one embodiment of the present utility model, the sound outlet is a side sound outlet.

The second aspect of the present utility model also provides an electronic device, which includes the speaker module set described in any one of the above.

In one specific embodiment of the utility model, the loudspeaker module further comprises a shell provided with a sound hole on the side face, and the loudspeaker module is arranged in the shell in a mode that the sound hole corresponds to the sound hole of the whole machine.

The utility model provides a loudspeaker module, which comprises a shell, a moving coil sounding monomer and a piezoelectric ceramic sounding monomer, wherein the shell is provided with an inner cavity and a sounding hole communicated with the inner cavity; the movable coil sounding unit is arranged in the inner cavity of the shell, a front sound cavity is formed between the sounding surface of the movable coil sounding unit and the shell, and a sound guide channel is formed between the front sound cavity and the sound outlet; the piezoelectric ceramic sounding monomer is arranged on the outer side of the sounding hole. According to the loudspeaker module provided by the utility model, the piezoelectric ceramic sounding monomer is arranged at the front end of the sounding hole of the shell, and then corresponds to the sounding hole of the whole machine of the electronic equipment, so that the performance of a high-frequency area of the electronic equipment can be effectively improved, the high-frequency area is further improved obviously, and meanwhile, the structure based on the piezoelectric ceramic sounding monomer is simple, so that the loudspeaker module is arranged outside the shell without occupying redundant space.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a speaker module according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a portion of the structure of FIG. 1;

fig. 3 is a schematic diagram of a connection structure between the speaker module and the electronic device housing in fig. 1.

Reference numerals illustrate:

10-a speaker module, 20-an electronic device;

the sound-producing device comprises a shell 11, a moving coil sound-producing monomer 12, a piezoelectric ceramic sound-producing monomer 13, a sound-producing hole 14, a front sound cavity 15, a rear sound cavity 16, a sound-guiding channel 17 and a support plate 18;

21-shell, 22-whole machine sound hole.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

The speaker module 10 and the electronic device 20 according to the embodiments of the present utility model are described below with reference to fig. 1-3.

As shown in fig. 1, the present embodiment provides a speaker module 10, where the speaker module 10 is applied to an electronic device 20 such as a mobile phone, a tablet computer, etc. for realizing a sound playing function of the electronic device 20.

Specifically, the speaker module 10 includes a housing 11, a moving coil sounding unit 12 and a piezoelectric ceramic sounding unit 13, wherein the housing 11 has an inner cavity and a sound outlet 14 communicating with the inner cavity; the moving coil sounding unit 12 is installed in the inner cavity of the shell 11, a front sound cavity 15 is formed between the sounding surface of the moving coil sounding unit 12 and the shell 11, and a sound guide channel 17 is formed between the front sound cavity 15 and the sound outlet 14; the piezoelectric ceramic sound generating unit 13 is disposed outside the sound generating hole 14.

Because the high-frequency performance of the moving coil sounding monomer 12 is generally poor, and the piezoelectric ceramic sounding monomer 13 just has good high-frequency performance, the high-frequency cutoff frequency can be extended, so that the performance of the loudspeaker module 10 can be optimized by combining the moving coil sounding monomer 12 and the piezoelectric ceramic sounding monomer 13, the performance of the high-frequency and low-frequency can be considered, and the tone quality of the loudspeaker module 10 can be improved. In addition, the piezoelectric ceramic sounding monomer 13 has a simple structure, has relatively low technological requirements, can reduce the cost of the speaker module 10 to a certain extent, has a small thickness of the whole structure, occupies a small space outside the sounding hole 14 of the shell 11 of the speaker module 10, and further avoids the influence of the improvement on the electronic equipment.

In one embodiment of the present utility model, the piezoelectric ceramic sound generating unit 13 includes a piezoelectric ceramic sheet and a metal sheet bonded to the periphery of the piezoelectric ceramic sheet.

In one embodiment of the present utility model, the sound emitting holes 14 are bar-shaped holes. Further, the sound outlet 14 is a side sound outlet.

In one embodiment of the present utility model, the metal sheet is rectangular and is fixed to the outer Zhou Shi of the sound outlet 14; the piezoelectric ceramic piece is rectangular, and two rectangular transmission holes are formed in the middle of the piezoelectric ceramic piece. The transmission hole is used for smoothly transmitting the audio signal of the moving coil sounding unit 12 to the outer side of the speaker unit.

In one embodiment of the present utility model, the metal sheet, the piezoelectric ceramic sheet, and the transmission hole are all bilaterally symmetrical about a central axis of the metal sheet. The arrangement is suitable for enabling the piezoelectric ceramics to generate single vibration balance so as to reduce mutual cancellation of energy, thereby reducing distortion phenomenon and further providing better sound analysis effect for users.

In one embodiment of the present utility model, a support plate 18 is disposed at the middle of the sound guide channel 17, and the support plate 18 extends along the sound propagation direction. The support plate 18 is used for supporting the housing 11, and in order to reduce the influence on the piezoelectric ceramics, the outer end of the support plate is at a certain distance from the side surface of the housing 11 where the sound outlet 14 is located.

In one embodiment of the present utility model, a rear acoustic cavity 16 separated from the front acoustic cavity 15 is further formed between the moving coil sounding unit 12 and the housing 11, and the rear acoustic cavity 16 is filled with a sound absorbing material. The rear acoustic chamber 16 is used to correct the low frequency region and further enhance the sound quality.

In one specific embodiment of the present utility model, the moving coil sounding unit 12 includes a basin frame, a vibration system and a magnetic circuit system, wherein the magnetic circuit system is disposed in an inner cavity of the basin frame and includes a magnetic yoke and a magnet assembly with a magnetic gap; the vibration system comprises a vibrating diaphragm and a voice coil, wherein the vibrating diaphragm is arranged at the opening of the basin frame, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil is inserted into a magnetic gap formed by the magnet assembly. When the voice coil is electrified, the voice coil is vibrated under the action of Lorentz force so as to drive the vibrating diaphragm to vibrate, so that sound production is realized.

The second aspect of the present utility model further provides an electronic device 20, where the electronic device 20 includes the speaker module 10 according to any one of the above.

In one embodiment of the present utility model, the speaker module 10 further includes a housing 21 having a sound hole 22 formed in a side surface thereof, and the sound hole 14 is disposed in the housing 21 in a manner corresponding to the sound hole 22. The arrangement mode is suitable for reducing the influence of the installation on the piezoelectric ceramic sounding monomer 13, so that the high-pitch tone quality is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A speaker module, comprising:

a housing having an inner cavity and an acoustic port in communication with the inner cavity;

the moving coil sounding unit is arranged in the inner cavity of the shell, a front sound cavity is formed between the sounding surface of the moving coil sounding unit and the shell, and a sound guide channel is formed between the front sound cavity and the sound outlet;

the piezoelectric ceramic sounding monomer is arranged on the outer side of the sounding hole.

2. The speaker module of claim 1, wherein the piezoelectric ceramic sound generating unit comprises a piezoelectric ceramic piece and a metal piece bonded to the periphery of the piezoelectric ceramic piece.

3. The speaker module of claim 2, wherein the sound outlet is a bar-shaped hole.

4. A loudspeaker module according to claim 3, wherein the metal sheet is rectangular and is fixedly matched with the outer Zhou Shi of the sound outlet; the piezoelectric ceramic piece is rectangular, and two rectangular transmission holes are formed in the middle of the piezoelectric ceramic piece.

5. The speaker module as recited in claim 4, wherein the metal sheet, the piezoelectric ceramic sheet, and the transmission hole are all bilaterally symmetric about a central axis of the metal sheet.

6. The speaker module of claim 1, wherein a support plate is disposed within the sound guide channel, the support plate extending in a direction of sound propagation.

7. The speaker module of claim 1, wherein a rear sound cavity is further formed between the moving coil sounding unit and the housing, the rear sound cavity being spaced apart from the front sound cavity, and sound absorbing material is filled in the rear sound cavity.

8. The speaker module of claim 1, wherein the sound outlet is a side sound outlet.

9. An electronic device comprising a speaker module according to any one of claims 1-8.

10. The electronic device of claim 9, further comprising a housing having a complete machine sound hole in a side surface, wherein the speaker module is disposed in the housing in a manner that the sound hole corresponds to the complete machine sound hole.