CN111356065B

CN111356065B - Sound production module and electronic equipment

Info

Publication number: CN111356065B
Application number: CN201811565645.4A
Authority: CN
Inventors: 李以龙
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2021-12-28
Anticipated expiration: 2038-12-20
Also published as: CN111356065A

Abstract

The disclosure relates to a sound production module and an electronic device. The sound production module includes: the piezoelectric ceramic comprises a fixed end and a movable end which are opposite, and the fixed end is used for fixing the sounding module; the vibrating diaphragm, the vibrating diaphragm connect in piezoceramics's expansion end, including connecting portion, connecting portion are used for with the vibrating diaphragm is connected to predetermineeing the fixing base, so that the vibrating diaphragm is in piezoceramics is when being switched on power signal, along with piezoceramics's deformation and vibration.

Description

Sound production module and electronic equipment

Technical Field

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

Background

Currently, a speaker module and an earphone module are respectively disposed on an electronic device, especially a communication device, so that the electronic device can play a playback sound or a hands-free voice signal through the speaker module, and play a voice signal in a handheld passing process through the earphone module. In the related art, the vibrating diaphragm is driven to vibrate after being electrified with a power signal through the matching of the coil and the magnet, so that air is further vibrated, and sound playing is realized.

Disclosure of Invention

The present disclosure provides a sound module and an electronic device to solve the deficiencies in the related art.

According to a first aspect of the embodiments of the present disclosure, there is provided a sound module, including:

the piezoelectric ceramic comprises a fixed end and a movable end which are opposite, and the fixed end is used for fixing the sounding module;

the vibrating diaphragm, the vibrating diaphragm connect in piezoceramics's expansion end, including connecting portion, connecting portion are used for with the vibrating diaphragm is connected to predetermineeing the fixing base, so that the vibrating diaphragm is in piezoceramics is when being switched on power signal, along with piezoceramics's deformation and vibration.

Optionally, the piezoelectric ceramic module further comprises a balancing weight connected to the movable end of the piezoelectric ceramic to increase the deformation of the movable end.

Optionally, the length of the piezoelectric ceramic is positively correlated with the amplitude of the diaphragm.

Optionally, the weight of the piezoelectric ceramic is positively correlated with the amplitude of the diaphragm.

Optionally, the diaphragm is bonded to the movable end of the piezoelectric ceramic.

Optionally, the piezoelectric ceramic includes:

the ceramic body is connected with the vibrating diaphragm;

the fixing piece is bonded with the ceramic body and fixed at the first preset position.

Optionally, the piezoelectric ceramic further includes a first conductive end and a second conductive end, and the first conductive end and the second conductive end are electrically connected to a power supply end of the electronic device.

Optionally, the diaphragm is flat, the surface of the diaphragm is connected to the piezoelectric ceramic, and the side edge of the diaphragm is connected to the second preset position.

Optionally, the sound generating module includes at least one of:

speaker module and receiver module

According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, which includes a first fixing base, a second fixing base and the sound module according to any one of the embodiments described above, wherein the piezoelectric ceramic of the sound module is fixedly connected to the first fixing base, and the diaphragm of the sound module is fixedly connected to the second fixing base. The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the fixed end of the piezoelectric ceramic is fixed at the first preset position, so that the movable end can deform based on the fixed end after the piezoelectric ceramic is powered on by a power signal, and the movable end is far away from the fixed end, so that the deformation amount of the movable end can be increased as much as possible, the amplitude of the vibrating diaphragm is increased, and the sound loudness is increased. And, for among the correlation technique, adopt the scheme of magnet and coil drive vibrating diaphragm vibration, can simplify the structure to can avoid appearing the audio problem because the coil takes place to burn circle, circle scattering.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram illustrating a structure of a sound module according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating another example of a sound module according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram illustrating another sound module according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram of a diaphragm according to an exemplary embodiment.

Fig. 5 is a schematic structural diagram of an electronic device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like 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 present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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 application. 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 diagram illustrating a structure of a sound module 100 according to an exemplary embodiment. As shown in fig. 1, the sound module 100 may include a piezoelectric ceramic 1 and a diaphragm 2. The piezoelectric ceramic 1 may include a fixed end 11 and a movable end 12 disposed opposite to each other. Wherein, stiff end 11 can fix sound module 100, and vibrating diaphragm 2 can be connected in piezoceramics 1's expansion end 12, and this vibrating diaphragm 2 can also include connecting portion 21 simultaneously, and this connecting portion 21 can be used for being connected to the vibrating diaphragm and predetermine the fixing base, and this predetermines the fixing base and is fixed for piezoceramics 1. Therefore, when the piezoelectric ceramic 1 is powered on by a power signal, the piezoelectric ceramic 1 can deform under the action of the power signal, so that the vibrating diaphragm 2 connected to the piezoelectric ceramic 1 vibrates therewith, air can be further driven to vibrate, and the transmission of audio is realized.

Specifically, as shown in fig. 1, when a piezoelectric ceramic 1 is energized with an alternating voltage, the piezoelectric ceramic 1 can be switched between a position shown by a solid line and a position shown by a broken line in fig. 1; correspondingly, the vibrating diaphragm 2 can also vibrate between the position shown by the solid line and the position shown by the dotted line under the driving of the piezoelectric ceramic 1, so that the surrounding air is driven to vibrate, and sound transmission is realized.

As can be seen from the above embodiments, since the fixed end 11 of the piezoelectric ceramic 1 is fixed at the first predetermined position, after the piezoelectric ceramic 1 is powered on by the power signal, the movable end 12 can deform based on the fixed end 11, and since the movable end 12 is disposed away from the fixed end 11, the deformation amount of the movable end 12 can be increased as much as possible, the amplitude of the diaphragm 2 is increased, and the sound loudness is increased. And, for among the correlation technique, adopt the scheme of magnet and coil drive vibrating diaphragm vibration, can simplify the structure to can avoid appearing the audio problem because the coil takes place to burn circle, circle scattering.

Further, as shown in fig. 2, the sound module 100 may further include a weight 3, and the weight 3 may be connected to the movable end 12 of the piezoelectric ceramic 1. Thus, when the piezoelectric ceramic 1 is powered on by a power signal, the deformation amount of the movable end 12 can be increased, and under the condition that the power signal is the same, the amplitude of the diaphragm 2 can be further increased, and the loudness of the transmitted sound can be increased. The weight of the balancing weight 3 can be set according to the amplitude requirement of the vibrating diaphragm 2, and the disclosure is not limited; the counterweight block 3 can also be made of piezoelectric ceramic materials so as to simplify the processing; alternatively, the weight member 3 may be made of other materials and then fixedly connected to the piezoelectric ceramic 1.

In the above embodiments, when the length of the piezoelectric ceramic 1 is equivalent to the distance between the fixed end 11 and the movable end 12, and when the distance between the fixed end 11 and the movable end 12 is larger, if the piezoelectric ceramic 1 is powered on by a power signal, the centrifugal force applied to the movable end 12 is larger, so that the deformation of the movable end 12 is increased, and the amplitude of the diaphragm 2 is also increased. Based on this, the user can adjust the length of the piezoelectric ceramic 1 according to the internal space condition of the electronic device equipped with the sound production module 100, thereby improving the amplitude of the diaphragm 2. For example, the distance between the fixed end 11 and the movable end 12 of the piezoelectric ceramic 1 may be between 5mm and 20mm, for example, 8mm, 10mm, 15mm, 18mm, etc., which is not limited by the disclosure.

In one embodiment, the amplitude of the diaphragm 2 is also positively correlated to the weight of the piezoelectric ceramic 1. It is understood that the centrifugal force F ═ mw received by the movable end 12 of the piezoelectric ceramic 1²r, where m is the weight of the piezoelectric ceramic 1, w is the acceleration at which the piezoelectric ceramic 1 deforms, and r is the distance between the fixed end 11 and the movable end 12. Therefore, when the weight of the piezoelectric ceramic 1 increases, the centrifugal force applied to the movable end 12 increases, the amplitude of the diaphragm 2 increases, and the loudness of the transmitted sound increases.

Based on the technical scheme of the present disclosure, the vibrating diaphragm 2 and the movable end 12 of the piezoelectric ceramic 1 can be fixed in a bonding manner. For example, glue may be applied between the diaphragm 2 and the movable end 12, and after the glue is dried, the fixed connection between the diaphragm 2 and the piezoelectric ceramic 1 is achieved. Of course, in other embodiments, the diaphragm 2 and the piezoelectric ceramic 1 may be fixed by other means, such as by a fastener or adhesive tape, and the disclosure is not limited thereto.

In one embodiment, still shown in fig. 2, the piezoelectric ceramic 1 may include a ceramic body 13, and the ceramic body 13 includes a fixed end 11 and a movable end 12, which may be formed by stacking a plurality of ceramic plates. The piezoelectric ceramic 1 may further include a fixing piece 14, the fixing piece 14 is connected to the movable end 12, and the fixing piece 14 is connected to a first preset position in the electronic device, so as to fix the ceramic body 13 through the fixing piece 14, thereby reducing the limitation of the internal space of the electronic device on the arrangement of the piezoelectric ceramic 1, and enriching the selectable range of the installation position of the piezoelectric ceramic 1.

As shown in fig. 3, in the above embodiments, the piezoelectric ceramic 1 may further include a first conductive terminal 15 and a second conductive terminal 16, and the first conductive terminal 15 and the second conductive terminal 16 are electrically connected to a power supply terminal in the electronic device, so that the piezoelectric ceramic 1 is deformed by a power supply signal output by the electronic device. For example, the first conductive terminal 15 may be a conductive positive electrode, and the second conductive terminal 16 may be a conductive negative electrode, and when the conductive positive electrode and the conductive negative electrode are respectively connected to corresponding positions on the power supply terminal, a current loop may be formed, so that the current flows through the piezoelectric ceramic 1 to deform the piezoelectric ceramic. Wherein, the power supply terminal in the electronic device may include a battery, and the first conductive terminal 15 and the second conductive terminal 16 may be directly connected to the output terminal of the battery; alternatively, the first conductive terminal 15 and the second conductive terminal 16 may be connected to other power supply ports, and the other power supply ports are connected to the battery.

As shown in fig. 4, the diaphragm 2 may be flat, for example, it may be oblate as shown in fig. 4, and the oblate diaphragm 2 may include a surface 22 and a side edge 23, the surface 22 may be connected to the movable end 12 of the piezoelectric ceramic 1, and the side edge 23 may be connected to a second predetermined position in the electronic device. Of course, in other embodiments, the diaphragm 2 may have other shapes, such as a polygonal shape; alternatively, they may be irregularly shaped, and the disclosure is not limited thereto. The sound module 100 may include one or more of a speaker module and an earpiece module.

The sound module 100 can be applied to an electronic device 200 shown in fig. 5. For example, as shown in fig. 5, when the sound module 100 is a speaker module, it may be configured to the bottom of the electronic device 200 as shown in fig. 5; alternatively, in other embodiments, when the sound module 100 is an earphone module, it may be disposed on the top of the electronic device 200 to facilitate users to listen to sound while holding the mobile phone. The electronic device 200 may include a mobile phone, a tablet computer, an e-reader, etc., which is not limited by this disclosure.

The electronic device 200 may further include a first fixing seat (not shown in the figure) and a second fixing seat (not shown in the figure), where the first fixing seat may be fixedly connected to the fixing end 11 of the piezoelectric ceramic 1 on the sound module 100, and the second fixing seat may be fixedly connected to the connecting portion of the vibrating diaphragm 2 on the sound module 100. The first fixing base and the second fixing base may be a housing or an internal bracket of the electronic device 200, which is not limited by the present disclosure.

Other embodiments of the disclosure 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 disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure 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 present disclosure is limited only by the appended claims.

Claims

1. A sound generating module, comprising:

the piezoelectric ceramic comprises a fixed end and a movable end which are oppositely arranged, and the fixed end is used for fixing the sounding module;

the vibrating diaphragm is bonded to the movable end of the piezoelectric ceramic and comprises a connecting part, and the connecting part is used for connecting the vibrating diaphragm to a preset fixed seat so that the vibrating diaphragm vibrates along with the deformation of the piezoelectric ceramic when the piezoelectric ceramic is powered on by a power signal;

still include the balancing weight, the balancing weight connect in piezoceramics's expansion end, in order to increase the deformation volume of expansion end, the balancing weight connect in the expansion end deviates from one side of vibrating diaphragm.

2. The acoustic module of claim 1, wherein the length of the piezoelectric ceramic is positively correlated to the amplitude of the diaphragm.

3. The acoustic module of claim 1, wherein the weight of the piezoelectric ceramic is positively correlated to the amplitude of the diaphragm.

4. The acoustic module of claim 1 wherein the piezoelectric ceramic comprises:

the ceramic body is connected with the vibrating diaphragm;

the fixing piece is bonded with the ceramic body and fixed at a first preset position.

5. The sound generating module of claim 1, wherein the piezoelectric ceramic further comprises a first conductive terminal and a second conductive terminal, and the first conductive terminal and the second conductive terminal are electrically connected to a power supply terminal of an electronic device.

6. The acoustic module of claim 1, wherein the diaphragm is flat, and a surface of the diaphragm is connected to the piezoelectric ceramic, and a side edge of the diaphragm is connected to a second predetermined location.

7. The sound generation module of claim 1, wherein the sound generation module comprises at least one of:

speaker module, earphone module.

8. An electronic device, comprising a first fixing base, a second fixing base and the sounding module set as claimed in any one of claims 1 to 7, wherein the piezoelectric ceramic of the sounding module set is fixedly connected with the first fixing base, and the diaphragm of the sounding module set is fixedly connected with the second fixing base.