CN106804020B

CN106804020B - Vibration sounding device

Info

Publication number: CN106804020B
Application number: CN201710048577.3A
Authority: CN
Inventors: 王洪兴; 周荣冠
Original assignee: Ruisheng Technology Nanjing Co Ltd
Current assignee: Ruisheng Technology Nanjing Co Ltd
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2020-06-19
Anticipated expiration: 2037-01-20
Also published as: CN106804020A

Abstract

The invention provides a vibration sound production device, which comprises a frame, an upper cover plate, a lower cover plate and a plurality of vibration monomers, wherein the upper cover plate and the lower cover plate are respectively covered on the upper side and the lower side of the frame; the vibration unit comprises a shell with an accommodating space, and a first electromagnet, a vibration unit and a second electromagnet which are accommodated in the accommodating space and arranged at intervals; the vibration unit is positioned between the first electromagnet and the second electromagnet; the shell is clamped between the upper cover plate and the lower cover plate, the first electromagnet is fixed on the upper cover plate, and the second electromagnet is fixed on the lower cover plate; the vibration unit comprises magnetic steel and an elastic part for suspending the magnetic steel in the accommodating space. Compared with the prior art, the vibration sounding device is simple to mount, good in vibration effect and excellent in acoustic performance.

Description

Vibration sounding device

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of acoustoelectrics, in particular to a vibration sounding device applied to a mobile electronic product.

[ background of the invention ]

With the development of electronic technology, existing electronic devices often have a sound production function. In the prior art, besides a speaker as a sound generating device, there is a sound generating technology that utilizes the self-vibration of an electronic device, the vibration of a housing thereof, or the vibration of a local housing thereof to generate sound, where the electronic device may be a mobile phone or a tablet computer, and the housing or the local housing may be made of various types of materials such as metal, glass, plastic, and ceramic. In the sound production technology using the device vibration or the shell vibration, a sound outlet does not need to be arranged on the device shell, so that the attractiveness and the waterproofness of the device are improved.

However, in the related art, in the sound emission technology using the device bulk vibration or the case vibration, it is necessary to vibrate the sound emission device driving device bulk vibration or the driving device case vibration, for example, by a ceramic vibrator based on a piezoceramic material, an electromagnetic driving technology, and a magnetostrictive effect.

However, the vibrator of the related art has a large size and a large thickness, and is limited in application in a trend of thinning electronic devices such as a mobile phone. In addition, the driving force output nonlinearity of the related art vibrator is significant, so that the final sound production distortion of the electronic device is significant.

Therefore, there is a need to provide a new vibration generating device to solve the above problems.

[ summary of the invention ]

The technical problem to be solved by the invention is to provide a vibration sounding device with good vibration effect and excellent acoustic performance.

In order to solve the above technical problems, the present invention provides a vibration sound-generating device, which includes a frame, an upper cover plate and a lower cover plate respectively covering the upper and lower sides of the frame, and a plurality of vibration units fixedly accommodated in the frame for generating vibration; the vibration unit comprises a shell with an accommodating space, and a first electromagnet, a vibration unit and a second electromagnet which are accommodated in the accommodating space and arranged at intervals; the vibration unit is positioned between the first electromagnet and the second electromagnet;

the shell is clamped between the upper cover plate and the lower cover plate, the first electromagnet is fixed on the upper cover plate, and the second electromagnet is fixed on the lower cover plate; the vibration unit comprises magnetic steel and an elastic part for suspending the magnetic steel in the accommodating space.

Preferably, the elastic part comprises an annular fixed arm and a plurality of elastic arms arranged at intervals and extended from the fixed arm, the fixed arm is fixed on the inner side of the shell, and the magnetic steel is suspended between the first electromagnet and the second electromagnet by the elastic arms.

Preferably, the elastic arms comprise four and are arranged at equal intervals.

Preferably, the elastic arm is of an arc structure.

Preferably, the magnetic steel is a permanent magnet.

Preferably, a plurality of the vibration units are connected in parallel or in series.

Preferably, the plurality of vibration units are arranged at equal intervals.

Preferably, a plurality of the vibration units are arranged in an array.

Preferably, the housing is cylindrical.

Preferably, the cross-sectional shape of the frame is circular or elliptical or rectangular.

Compared with the prior art, the vibration sounding device comprises a plurality of vibration monomers, each vibration monomer can be independently controlled, and all the vibration monomers can be controlled integrally, so that the vibration monomers enable the vibration modes of the vibration sounding device to be diversified, different vibration effects are formed, and the vibration linearity and the vibration driving force generated by the vibration sounding device are high; meanwhile, the vibration monomer is small in structure, and the quantity of the vibration monomer can be adjusted according to requirements, so that the vibration sound production device is small in size and convenient to install.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is an exploded perspective view of a vibration-producing device according to the present invention;

FIG. 2 is a schematic structural diagram of a vibration unit of the vibration sound generating device according to the present invention;

FIG. 3 is a partial exploded view of FIG. 2;

fig. 4 is a sectional view taken along line a-a in fig. 2.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is an exploded perspective view of a vibration sound generator device according to the present invention. The invention provides a vibration sounder 100, which comprises a frame 1, an upper cover plate 2, a lower cover plate 3 and a vibration monomer 4.

The cross section of the frame 1 is circular, oval or rectangular, that is, the shape of the external appearance of the vibration sound production device 100 is circular, oval or rectangular. Of course, the shape thereof is not limited thereto.

The upper cover plate 2 and the lower cover plate 3 are respectively covered on the upper side and the lower side of the frame 1.

The plurality of vibration units 4 are respectively fixedly accommodated in the frame 1 and are configured to generate vibrations, and 100 vibration units are exemplified in the present embodiment. The vibrating cell 4 is based on a Micro-Electro-Mechanical System (MEMS). It is a plurality of vibration monomer 4 is equidistant setting each other, and is more excellent, a plurality of vibration monomer 4 is the array and arranges. The arrangement is not limited thereto.

Referring to fig. 2-4, fig. 2 is a schematic structural view of a vibration unit of the vibration sound generating device according to the present invention; FIG. 3 is a partial exploded view of FIG. 2; fig. 4 is a sectional view taken along line a-a in fig. 2. Specifically, the vibration cell 4 includes a housing 41 having a housing space 45, a first electromagnet 42, a vibration unit 43, and a second electromagnet 44.

The first electromagnet 42, the vibration unit 43, and the second electromagnet 44 are sequentially accommodated in the accommodating space 45 along the direction from the upper cover plate 2 to the lower cover plate 3, and are arranged at intervals. That is, the vibration unit 43 is located between the first electromagnet 42 and the second electromagnet 44.

The housing 41 is interposed between the upper cover 2 and the lower cover 3. In the present embodiment, the housing 41 has a cylindrical shape, but the shape is not limited thereto.

The first electromagnet 42 is fixed to the upper cover plate 2, is used for generating a magnetic field after being electrified, and includes a first iron core 421 and a first coil 422 wound around the first iron core 421. In the present embodiment, the first core 421 is fixed to the upper cover 2.

The second electromagnet 44 is fixed to the lower cover plate 3, is used for generating a magnetic field after being electrified, and includes a second iron core 441 and a second coil 442 wound on the second iron core 441. In the present embodiment, the second core 442 is fixed to the upper cover 2.

The vibration unit 43 includes a magnetic steel 431 and an elastic member 432 suspending the magnetic steel 431 in the accommodating space 45.

In this embodiment, the magnetic steel 431 is a permanent magnet.

The first electromagnet 42 and the second electromagnet 44 generate a magnetic field to drive the vibration unit 43 to vibrate up and down.

After the first coil 422 and the second coil 442 are energized, a magnetic field perpendicular to the upper cover plate 2 and the lower cover plate 3 is generated, so that the magnetic steel 431 is driven to vibrate up and down along the magnetic field direction, and the magnetic steel 431 provides support and restoring force through the elastic member 432.

By adjusting the current magnitude and direction of the first coil 422 and the second coil 442, the force magnitude and direction of the magnetic steel 431 can be changed. When the first electromagnet 42 and the second electromagnet 44 act simultaneously, a pushing/pulling action can be formed, so that the acting force on the magnetic steel 431 on the two sides is more balanced, and the stability is higher.

Specifically, the elastic member 432 includes a fixed arm 4321 having a ring shape and a plurality of elastic arms 4322 extending from the fixed arm 4321 and spaced apart from each other.

The fixed arm 4321 is fixed inside the housing 41, and the elastic arm 4322 extends toward the magnetic steel 431 and is fixedly connected to the magnetic steel 431, so that the magnetic steel 431 is fixedly suspended between the first electromagnet 42 and the second electromagnet 44.

In this embodiment, the elastic arms 4322 include four elastic arms and are arranged at equal intervals, so that the supporting force and the restoring force of the elastic member 432 are stable. Preferably, the elastic arm 4322 has an arc structure, so as to increase the elastic length of the elastic arm 4322, i.e., to enhance the supporting force and restoring force provided by the elastic arm 4322. Of course, the number of the spring arms 4322 is not limited to four, and the shape may be other shapes, such as wave shape.

In the present embodiment, a plurality of the vibration cells 4 may be connected in parallel or in series. Each of said vibrating elements 4 will then be controlled simultaneously, i.e. in exactly the same motion. Of course, each of the vibration units 4 can be independently controlled by changing the control circuit, so that more effective and rich control of the vibration unit 4 can be realized by the external system cPu (not shown) or a dedicated controller (not shown), and more vibration functions can be realized.

Of course, the resonant frequency and the performance of the plurality of vibration units 4 may be all the same, or may be partially the same or completely different, so that the vibration experience effect is richer.

In the vibration sound-producing device 100 of the present invention, because the number of the first electromagnets 42 and the second electromagnets 44 is large, when manufacturing and assembling, the first electromagnets 42 and the second electromagnets 44 on the same side are first connected and fixed to the upper cover plate 2 and the lower cover plate 3, respectively, to form a module, and then fastened to the frame 1, so that the installation is simple and the assembly efficiency is high.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A vibration sound-producing device, characterized by: the vibration isolation device comprises a frame, an upper cover plate, a lower cover plate and a plurality of vibration monomers, wherein the upper cover plate and the lower cover plate are respectively covered on the upper side and the lower side of the frame; the plurality of vibration monomers are arranged in an array, the plurality of vibration monomers can be connected in parallel, and each vibration monomer is independently controlled; the vibration units can be connected in series, each vibration unit is controlled simultaneously, and each vibration unit comprises a shell with an accommodating space, and a first electromagnet, a vibration unit and a second electromagnet which are accommodated in the accommodating space and arranged at intervals; the vibration unit is positioned between the first electromagnet and the second electromagnet;

2. The vibration sound production device according to claim 1, wherein the elastic member comprises a fixed arm having a ring shape and a plurality of elastic arms extending from the fixed arm and arranged at intervals, the fixed arm is fixed inside the housing, and the elastic arms suspend the magnetic steel between the first electromagnet and the second electromagnet; the first electromagnet and the shell are arranged at intervals, and the second electromagnet and the shell are arranged at intervals.

3. The vibratory sound production device of claim 2, wherein the resilient arms comprise four and are equally spaced apart.

4. The vibratory sound production device of claim 3, wherein the resilient arm is arcuate in configuration.

5. The vibratory sound production device of claim 4, wherein the magnetic steel is a permanent magnet.

6. The vibratory sound production device of claim 1, wherein the plurality of vibratory units are equally spaced from one another.

7. The vibratory sound production device of claim 1, wherein the housing is cylindrical.

8. The vibratory sound production device of claim 1, wherein the cross-sectional shape of the frame is circular or elliptical or rectangular.