CN114979336A

CN114979336A - Sound production device and electronic equipment

Info

Publication number: CN114979336A
Application number: CN202110204891.2A
Authority: CN
Inventors: 杜娜; 冉松茂
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-08-30

Abstract

The application relates to a sound emitting device and an electronic device. The sound emitting device comprises a loudspeaker assembly and a resonance structure which are connected with each other; the loudspeaker assembly comprises a loudspeaker assembly, a resonance structure and a sound outlet, wherein a first hollow resonance area and a second hollow resonance area are formed in the resonance structure, the first resonance area is communicated with the second hollow resonance area, an inner cavity of the loudspeaker assembly is communicated with the first resonance area, one side, far away from the loudspeaker assembly, of the resonance structure is provided with the sound outlet, and the sound outlet is communicated with the second resonance area and is located on one side, far away from the first resonance area, of the second resonance area. The resonance structure of the sound generating device comprises two resonant cavities which are communicated with each other, a plurality of resonance peaks can be formed on the sound generated by the loudspeaker component in the resonance structure, the high-frequency cut-off frequency of the sound generated by the loudspeaker component is improved, the high-frequency bandwidth of the sound is widened, and therefore the hearing sense of a user is improved.

Description

Sound production device and electronic equipment

Technical Field

The application relates to the technical field of terminals, in particular to a sounding device and electronic equipment.

Background

With the rapid development of the electronic industry, portable electronic devices are popular because they are convenient to carry and have comprehensive functions, and can meet the needs of people in many aspects such as internet surfing, communication and entertainment, and they are also widely used as important electroacoustic products (such as speakers or receivers) of electronic devices. As a lot of existing electronic devices (such as mobile phones, tablet computers and the like) tend to be in a full-screen direction, electroacoustic products in electronic products such as mobile phones, tablet computers and the like mostly adopt a side sounding mode at present. In the related art, with the adoption of the electronic device with the side sound emission, the front cavity structure comprises the cavity above the sound film of the loudspeaker and the narrow and long channel connected with the sound outlet, so that the sound emission loss of the loudspeaker is easily large, and the hearing sense of a user is influenced.

Disclosure of Invention

The application provides a sounding device and an electronic device, which are used for solving the defects in the related art.

According to a first aspect of embodiments of the present application, there is provided a sound emitting apparatus, comprising a speaker assembly and a resonant structure connected to each other; a hollow first resonance area and a hollow second resonance area are formed in the resonance structure, the first resonance area is communicated with the second resonance area, an inner cavity of the loudspeaker assembly is communicated with the first resonance area, a sound outlet is formed in one side, far away from the loudspeaker assembly, of the resonance structure, the sound outlet is communicated with the second resonance area and is positioned on one side, far away from the first resonance area, of the second resonance area; wherein the first resonance region and the second resonance region are for generating formants to sound in the pass-through region.

Furthermore, a first resonant cavity, a first resonant pore channel, a second resonant cavity and a second resonant pore channel which are communicated with each other are formed in the resonant structure; wherein the first resonant cavity and first resonant orifice form the first resonant region and the second resonant cavity and second resonant orifice form the second resonant region; the inner cavity of the speaker assembly is communicated with the first resonant cavity, the first resonant cavity is communicated with the second resonant cavity through the first resonant duct, the second resonant duct is communicated with the second resonant cavity and the sound outlet, and the sound outlet is located on one side of the second resonant duct away from the second resonant cavity; the cross-sectional area of the first resonant cavity is greater than the cross-sectional area of the first resonant orifice, and the cross-sectional area of the second resonant cavity is greater than the cross-sectional area of the second resonant orifice.

Further, the cross section of the first resonant cavity is circular, and the cross section of the first resonant orifice is circular; or the like, or, alternatively,

the cross section of the second resonant cavity is circular, and the cross section of the second resonant pore passage is circular.

Furthermore, the loudspeaker assembly comprises a loudspeaker shell and a loudspeaker, an inner cavity is formed in the loudspeaker shell, and the loudspeaker is arranged in the inner cavity.

Furthermore, the inner cavity comprises a first cavity area for arranging the loudspeaker and a second cavity area positioned above the first cavity area, and the loudspeaker comprises a loudspeaker body and a sound film arranged on the loudspeaker body and facing the second cavity area.

Furthermore, the loudspeaker shell comprises a first shell part and a second shell part, an inner cavity of the loudspeaker component is formed in the first shell part, a communication channel is formed in the second shell part, and the inner cavity of the loudspeaker component is communicated with the first resonance cavity through the communication channel.

Further, a sealing member is arranged at the joint of the loudspeaker assembly and the resonance structure.

Further, the material of the sealing member comprises foam.

According to a second aspect of the embodiments of the present application, there is provided an electronic apparatus, the electronic apparatus includes an apparatus housing and the sound emitting device as described above, the resonance structure of the sound emitting device is formed in the apparatus housing, the apparatus housing is provided with a side wall, and the sound outlet is opened in the side wall of the apparatus housing.

Further, the electronic device includes a mobile phone, the device housing includes a middle frame, the resonance structure is formed on the middle frame, and the sound outlet is formed on a side wall of the middle frame.

In the sound emitting device and the electronic apparatus according to the present invention, the sound emitting device includes a speaker assembly and a resonant structure connected to each other, the resonant structure of the sound emitting device includes two resonant cavities connected to each other, and a plurality of resonant peaks can be formed in the resonant structure for the sound emitted by the speaker assembly, so as to improve the high frequency cut-off frequency of the sound emitted by the speaker assembly, widen the high frequency bandwidth thereof, and thereby improve the user hearing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sound emitting apparatus according to an exemplary embodiment;

fig. 2 is a graph of the test frequency response using the acoustic device of fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Fig. 1 is a schematic structural diagram of a sound emitting apparatus 100 according to an exemplary embodiment. Fig. 2 is a graph of the frequency response of the acoustic device of fig. 1.

Referring to fig. 1 and, if necessary, in conjunction with fig. 2, the sound emitting apparatus 100 includes a speaker assembly 10 and a resonant structure 20 connected to each other.

The sound emitting apparatus 100 includes a speaker assembly 10 and a resonant structure 20 connected to each other. The resonant structure 20 has a hollow first resonant region and a hollow second resonant region formed therein. The first resonance region is communicated with the second resonance region, the inner cavity of the speaker assembly 10 is communicated with the first resonance region, a sound outlet 2041 is formed in one side, away from the speaker assembly 10, of the resonance structure 20, and the sound outlet 2041 is communicated with the second resonance region and is located on one side, away from the first resonance region, of the second resonance region. Wherein the first resonance region and the second resonance region are for generating formants to sound in the pass-through region. Therefore, a plurality of resonance peaks can be formed on the sound emitted by the loudspeaker component in the resonance structure, the high-frequency cut-off frequency of the sound emitted by the loudspeaker component is improved, the high-frequency bandwidth of the sound is widened, and the hearing sense of a user is improved.

In some embodiments, a first resonant cavity 201, a first resonant port 202, a second resonant cavity 203, and a second resonant port 204 are formed in the resonant structure and are communicated with each other. Wherein the first resonance cavity 201 and the first resonance aperture 202 form said first resonance region. The second resonant cavity 203 and the second resonant port 204 form the second resonant region. The inner cavity of the speaker assembly 10 is communicated with the first resonant cavity 201, the first resonant cavity 201 is communicated with the second resonant cavity 203 through the first resonant duct 202, the second resonant duct 204 is communicated with the second resonant cavity 203 and the sound outlet 2041, and the sound outlet 2041 is located on one side of the second resonant duct 204 far away from the second resonant cavity 203. The cross-sectional area of the first resonance chamber 201 is larger than the cross-sectional area of the first resonance orifice 202. The cross-sectional area of the second resonant cavity 203 is larger than the cross-sectional area of the second resonant port 204.

Specifically, the first resonant cavity 201, the first resonant duct 202, the second resonant cavity 203, and the second resonant duct 204 are sequentially arranged along the length direction L of the sound emitting device, so that a resonant region can be formed at the first resonant cavity and the second resonant duct, and a second resonant region can be formed at the second resonant cavity and the second resonant duct, so as to form a plurality of resonant peaks for the sound emitted by the speaker assembly in the resonant structure, so as to improve the high-frequency cut-off frequency of the sound emitted by the speaker assembly, widen the high-frequency bandwidth thereof, and thereby improve the hearing of a user.

It should be noted that the resonant structure described herein may also include more resonant regions. For example, the resonant cavity structure may include more resonant cavities and resonant ducts that are disposed at intervals and are sequentially communicated with each other, and for example, the resonant cavity structure may include three resonant cavities and three resonant ducts. The number of the resonant cavities and the resonant ducts may be set according to specific situations, which is not limited in the present application.

In some embodiments, the first resonant cavity 201 has a circular cross-section and the first resonant orifice 202 has a circular cross-section.

In some embodiments, the second resonant cavity 203 has a circular cross-section and the second resonant tunnel 204 has a circular cross-section.

Further, in some embodiments, speaker assembly 10 includes a speaker housing and a speaker 11. An inner cavity 101 is formed in the speaker housing. A speaker 11 is disposed in the interior chamber 101.

The speaker 11 may be provided at a lower portion of the inner chamber 101. The interior 101 of the speaker assembly 10 includes a first cavity region 1011 in which the speaker 11 is disposed and a second cavity region 1012 located above the first cavity region 1011. The speaker 11 includes a speaker body and a diaphragm 111 disposed on the speaker body and facing the second cavity region 1012. Specifically, the sound film 111 is provided on the upper surface of the speaker body.

The loudspeaker housing comprises a first housing part 12 and a second housing part 13. An interior chamber 101 of the speaker assembly 10 is formed within the first housing portion 12. A communication passage 102 is formed in the second housing portion 13. The inner cavity 101 of the speaker assembly 10 communicates with the first resonance cavity 201 through the communication passage 102.

In some embodiments, the first housing portion 12 and the second housing portion 13 are integrally formed. The first case portion 12 has an opening 1013 at one side thereof, the second case portion 13 is provided at the opening, and the communication passage 102 communicates with the internal chamber 101 of the speaker unit 10 through the opening 1013. The overall shape of the first housing portion 12 may be substantially rectangular parallelepiped. The second housing portion 13 may be a flat rectangular parallelepiped structure, and the communication channel 102 therein has a square cross section.

It should be noted that the material of the speaker housing may be a metal material, or may be a non-metal material, such as a plastic material. The material of the resonant structure 20 may be a metal material, such as an aluminum alloy.

Further, in some embodiments, a seal 30 is provided at the connection of the speaker assembly 10 to the resonant structure 20. In some embodiments, the material of the seal 30 comprises foam. Of course, in other embodiments, the sealing element may be a structural element formed of other materials and having a sealing function.

Based on the above structure, the sound generating apparatus 100 may form a resonance region at the inner cavity 101 and the communication passage 102, the first resonance region at the first resonance cavity 201 and the first resonance port 202, and the second resonance region at the second resonance cavity 203 and the second resonance port 204. Therefore, the sound emitted from the speaker can form a plurality of medium frequency or high frequency formants falling within the effective frequency range (i.e. within 20 KHz) of listening to the sound from the ear in the sound emitting device 100, and the high frequency cut-off frequency and the sound pressure level thereof are in higher values, thereby achieving the effect of widening the high frequency bandwidth and improving the listening sensation of the user.

Specifically, referring to fig. 2, fig. 2 is a test frequency response graph of the acoustic apparatus shown in fig. 1, wherein the ordinate of the frequency response graph shown in fig. 2 is the sound pressure level of sound, and the abscissa thereof is the sound frequency. Specifically, the sound emitted from the speaker may form a first resonance peak a in a resonance region formed by the inner cavity 101 and the communication passage 102 as shown in fig. 2, a second resonance peak B in the first resonance region as shown in fig. 2, and a third resonance peak C in the second resonance region as shown in fig. 2. It can be seen that, in the frequency response graph shown in fig. 2, there is a first formant a at the intermediate frequency, and two formants at the high frequency are respectively a second formant B and a third formant C, and the sound pressure level of the high frequency cut-off frequency is above 80dB, which can effectively widen the high frequency bandwidth.

The present application further provides an electronic device. The electronic equipment comprises an equipment shell and the sound emitting device. The resonance structure 20 of the sound emitting device is formed on the equipment housing, the equipment housing is provided with a side wall, and the sound outlet 2041 is formed on the side wall of the equipment housing.

In some embodiments, the electronic device comprises a cell phone. The device housing includes a middle frame, the resonance structure 20 is formed on the middle frame, and the sound outlet 2041 is formed on a side wall of the middle frame. Optionally, the entire second resonant hole is formed in the side wall of the middle frame.

In addition, the sound outlet can be positioned on the side wall of the bottom end of the mobile phone and can be arranged at equal intervals with an earphone hole and a charging hole of the mobile phone. Of course, the sound outlet can also be arranged on other side walls of the mobile phone, which is not limited in the application and can be arranged according to specific conditions.

In addition, in some other embodiments, the electronic device may be other electroacoustic devices having sound emitting devices, such as a laptop computer, a tablet computer, a wearable electroacoustic device, and the like.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A sound generating device is characterized by comprising a loudspeaker component and a resonance structure which are connected with each other; a hollow first resonance area and a hollow second resonance area are formed in the resonance structure, the first resonance area is communicated with the second resonance area, an inner cavity of the loudspeaker assembly is communicated with the first resonance area, a sound outlet is formed in one side, far away from the loudspeaker assembly, of the resonance structure, the sound outlet is communicated with the second resonance area and is positioned on one side, far away from the first resonance area, of the second resonance area; wherein the first resonance region and the second resonance region are for generating formants to sound in the pass-through region.

2. The sound-generating apparatus as claimed in claim 1, wherein the resonant structure has a first resonant cavity, a first resonant port, a second resonant cavity, and a second resonant port formed therein, which are connected to each other; wherein the first resonant cavity and first resonant orifice form the first resonant region and the second resonant cavity and second resonant orifice form the second resonant region; the inner cavity of the speaker assembly is communicated with the first resonant cavity, the first resonant cavity is communicated with the second resonant cavity through the first resonant duct, the second resonant duct is communicated with the second resonant cavity and the sound outlet, and the sound outlet is located on one side of the second resonant duct away from the second resonant cavity; the cross-sectional area of the first resonant cavity is larger than that of the first resonant orifice, and the cross-sectional area of the second resonant cavity is larger than that of the second resonant orifice.

3. The sound producing device as claimed in claim 2, wherein said first resonant cavity is circular in cross-section and said first resonant orifice is circular in cross-section; or the like, or, alternatively,

4. The sound producing apparatus of claim 2 wherein the speaker assembly includes a speaker housing and a speaker, the speaker housing defining an interior chamber therein, the speaker being disposed in the interior chamber.

5. The sound-generating apparatus according to claim 4, wherein the inner chamber includes a first chamber region for disposing the speaker and a second chamber region located above the first chamber region, and the speaker includes a speaker body and a sound membrane disposed on the speaker body and facing the second chamber region.

6. The sound producing device as claimed in claim 5, wherein said speaker housing includes a first housing portion in which an inner cavity of said speaker assembly is formed and a second housing portion in which a communication passage is formed, said inner cavity of said speaker assembly being communicated with said first resonance chamber through said communication passage.

7. The sound producing device as claimed in claim 1, wherein a seal is provided at the connection of the speaker assembly to the resonant structure.

8. The sound producing device as claimed in claim 7, wherein the material of the seal comprises foam.

9. An electronic device, comprising a device housing and the sound emitting device of any one of claims 1 to 8, wherein the resonance structure of the sound emitting device is formed in the device housing, the device housing is provided with a side wall, and the sound outlet is opened in the side wall of the device housing.

10. The electronic device according to claim 9, wherein the electronic device comprises a cellular phone, the device case includes a middle frame, the resonance structure is formed at the middle frame, and the sound outlet is formed at a side wall of the middle frame.