CN212850997U

CN212850997U - Sound production unit and electronic equipment

Info

Publication number: CN212850997U
Application number: CN202022175827.XU
Authority: CN
Inventors: 王富裕; 魏清正; 刘爱根
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-03-30
Anticipated expiration: 2030-09-28

Abstract

The disclosure relates to a sound generating unit and an electronic device. The sounding unit can drive a plurality of areas of the sounding part to vibrate for sounding through the sounding driving device, and a sounding cavity is not needed, so that the occupation of the space of the electronic equipment can be avoided, and the light and thin property of the electronic equipment is promoted. The sound production portion comprises at least one part of shell, the structural strength of the shell is good, and the shell does not contain a chip, a circuit board, a sensor and other functional modules which are easy to be interfered by vibration, so that the bending wave resonance formed by the vibration of the shell can be used for obtaining diffused and irrelevant acoustic radiation, the sound bandwidth is increased, the effect is good, and the sound production unit can be stable, durable and low in cost.

Description

Sound production unit and electronic equipment

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a sound generating unit and an electronic device.

Background

In the related art, the sound of an electronic device such as a television is usually generated by a diaphragm driven by a piston-type reciprocating motion of a conventional sound box. The structure adopted by the sound production mode has large requirements on the box space of the sound box, and the sound bandwidth formed by the sound production mode based on the transmission sound box is in direct proportion to the box space for sound production in the sound box. Therefore, as the demand of the user for the bass effect of the electronic device in the using process is continuously improved, the thickness of the electronic device is increased by adopting the traditional loudspeaker box, and the lightness and thinness of the electronic device are affected.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a sound generating unit and an electronic device, so as to improve the sound generating effect and the lightness and thinness of the electronic device.

According to a first aspect of the present disclosure, a sound generating unit is provided, which is applied to an electronic device, the electronic device including a housing; the sound emitting unit includes:

a sound emitting portion including at least a portion of the housing;

the sound production drive module, the sound production drive module includes at least one sound production drive arrangement, the sound production drive module set up in on the portion of making a sound, in order to drive a plurality of regional vibration phonations of the portion of making a sound.

Optionally, the housing comprises a first region and a second region; the sound emitting portion includes the first region; the electronic device further comprises at least one functional structure, wherein the functional structure is arranged in the second area.

Optionally, the housing includes a back plate, and the first region is a flat plate structure on the back plate.

Optionally, the second region is disposed at a periphery of the first region, and the second region is located at an edge of the housing.

Optionally, the functional structural component includes at least one of a connection interface, an assembly structure, and a functional key.

Optionally, the sound production drive module includes one sound production drive arrangement, sound production drive arrangement sets up the central zone of sound production portion.

Optionally, the sound production drive module includes a plurality of sound production drive arrangement, sound production drive arrangement sets up on the sound production portion.

Optionally, the sound generating portion includes a central position, and the sound generating driving module includes at least a pair of sound generating driving devices symmetrically disposed with respect to the central position.

Optionally, the sound-generating driving module further comprises a sound-generating driving device arranged at the central position.

According to a second aspect of the present disclosure, an electronic device is provided, which includes an audio input interface, an audio processing chip, a housing, and any sound generating unit of the first aspect;

the audio processing chip is respectively electrically connected with the audio input interface and the sounding driving module to transmit audio signals to the sounding driving module, and the sounding driving module drives a plurality of areas of the sounding part to vibrate and sound according to the audio signals.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the sounding unit of this disclosure can drive a plurality of regional vibrations vocalizations of vocal portion through the vocal drive arrangement, need not the vocal cavity, therefore can avoid occupying electronic equipment's space, help promoting electronic equipment's light thin nature. The sound production portion comprises at least one part of shell, the structural strength of the shell is good, and the shell does not contain a chip, a circuit board, a sensor and other functional modules which are easy to be interfered by vibration, so that the bending wave resonance formed by the vibration of the shell can be used for obtaining diffused and irrelevant acoustic radiation, the sound bandwidth is increased, the effect is good, and the sound production unit can be stable, durable and low in cost.

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 perspective view of an electronic device in an exemplary embodiment of the disclosure;

fig. 2 is a schematic perspective view of an electronic device in another exemplary embodiment of the present disclosure;

FIG. 3 is one of schematic backside structures of an electronic device in an exemplary embodiment of the present disclosure;

fig. 4 is a second schematic diagram of a back structure of an electronic device in an exemplary embodiment of the disclosure;

fig. 5 is a third schematic diagram of a rear structure of an electronic device in an exemplary embodiment of the disclosure;

FIG. 6 is a fourth schematic diagram of a backside structure of an electronic device in an exemplary embodiment of the present disclosure;

FIG. 7 is a fifth schematic diagram of a backside structure of an electronic device in an exemplary embodiment of the present disclosure;

FIG. 8 is a sixth schematic diagram of a backside structure of an electronic device in an exemplary embodiment of the present disclosure;

fig. 9 is a seventh schematic diagram of a back side structure of an electronic device in an exemplary embodiment of the present disclosure;

fig. 10 is an eighth schematic diagram of a back side structure of an electronic device in an exemplary embodiment of the disclosure.

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 disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The present disclosure provides a sound generating unit applied to an electronic device, wherein the electronic device includes a housing. Fig. 1 is a schematic perspective view of an electronic device in an exemplary embodiment of the present disclosure. As shown in fig. 1, the sound emission unit 1 includes: a sound generating part 11 and a sound generating driving module 12. The sound generating part 11 includes at least a part of the housing 21, the sound generating driving module 12 includes at least one sound generating driving device 121, and the sound generating driving module 12 is disposed on the sound generating part 11 to drive a plurality of regions of the sound generating part 11 to generate sound by vibration.

In the above embodiment, the sound generating unit 1 can drive the multiple regions of the sound generating part 11 to generate sound through the sound generating driving device 121 without a sound generating cavity, so that the occupation of the space of the electronic device 2 can be avoided, and the light weight and the thinness of the electronic device 2 can be improved. The sound generating part 11 includes at least a part of the casing 21, the structural strength of the casing 21 is good, and the casing 21 does not include functional modules which are easily interfered by vibration, such as chips, circuit boards, sensors, etc., so that the bending wave resonance formed by the vibration of the casing 21 can not only obtain diffused and non-correlated acoustic radiation, so that the sound bandwidth is increased, the effect is good, but also the sound generating unit 1 can be stable, durable and low in cost.

The sound emission unit 1 of the present disclosure employs a DML (Distributed Mode speaker) technology, and operates by exciting and utilizing the bending resonance of the sound emission portion 11. One or more sound-generating driving devices 121 are disposed on the sound-generating portion 11, so that the sound-generating portion 11 can randomly vibrate in a normal vibration manner, and each part of the sound-generating portion 11 can independently move and generate sound independently, and the sum of the sound-generating driving devices and the sound-generating driving devices forms a desired frequency response. The performance of the sound generating unit 1 based on the DML technique is improved as the size of the sound generating part 11 increases, and the fundamental frequency of the bending resonance is reduced, thereby expanding the lower limit of the low frequency response and increasing the sound bandwidth.

It should be noted that, as shown in fig. 1, the sound-generating driving module 12 may be disposed on an outer side surface of the casing 21 facing the outside of the electronic device 2, so as to reduce the occupation of the internal space of the electronic device 2. Alternatively, as shown in fig. 2, the sound emission driving module 12 may be disposed on an inner side surface of the casing 21 facing the inside of the electronic device 2, so as to improve the external appearance of the electronic device 2. Alternatively, the sound-emitting driving module 12 may be disposed on both the inner side and the outer side of the housing 21 of the electronic device 2, which is not limited by this disclosure. The sound driving device 121 of the sound driving module 12 may be fixed to the sound generating portion 11 of the housing 21 by means of bonding, clamping, or the like, which is not limited in this disclosure.

In some embodiments, as shown in fig. 2, the housing 21 may include a first region 211 and a second region 212, the electronic device 2 further includes at least one functional structural member 22, the sound-emitting portion 11 includes the first region 211, and the functional structural member 22 is disposed in the second region 212. By making the sound emitting portion 11 and the functional structural member 22 be located in different areas of the housing 21, the structural and functional interference of the functional structural member 22 to the sound emitting portion 11 is avoided, which contributes to increasing the installation area of the sound emitting portion 11 and improving the working performance of the sound emitting unit 1.

For example, the second region 212 may be disposed at the periphery of the first region 211, and the second region 212 is located at an edge position of the housing 21. The first area 211 of the casing 21 is used as the sound-emitting part 11, the functional structural member 22 is arranged in the second area 212 of the casing 21, when the sound-emitting driving device 121 of the sound-emitting driving module 12 drives the sound-emitting part 11 to vibrate, the second area 212 which is located at the edge of the casing 21 and is arranged at the periphery of the first area 211 and the first area 211 form two independent areas, the functional structural member 22 arranged in the second area 212 cannot cause structural occupation and functional interference to the first area 211 which is used as the sound-emitting part 11, and the working area of the sound-emitting part 11 and the working performance of the sound-emitting unit 1 are improved.

In the above embodiment, the housing 21 may include a back plate, and the first region 211 may be a flat plate structure on the back plate. The back plate generally occupies a large size area of the electronic device 2, and at least a part of the back plate structure is used as the sound emitting part 11, so that the structural area of the back plate can be effectively utilized, and the size of the sound emitting part 11 is enough to obtain a desired sound bandwidth and effect. In addition, the flat plate structure on the back plate is used as the sound emitting part 11, so that the vibration performance and the sound emitting effect of the sound emitting part 11 can be further improved.

The electronic device 2 may be a television, a tablet computer, a vehicle-mounted terminal, a medical terminal, a mobile phone, etc., which is not limited by the present disclosure. Taking the electronic device 2 as a television as an example, at least a part of the structure of the backboard is used as the sound generating part 11, and sound generating vibration acts on the backboard, so that the limitation of screen sound generation on screen materials and the vibration damage to the screen are avoided. The back plate of the television is arranged on the back surface of the display panel, the size of the back plate is basically consistent with the display area of the television, the available vibration area is large, and the sound bandwidth is increased. In addition, sound cavity is not needed in sound production vibration based on the back plate, the requirement for reducing the internal space of the television is low, and the lightness and thinness of the television are improved.

The functional structure 22 may be at least one of a connection interface, an assembly structure, and a function key. The functional structural members 22 such as the connection interface, the assembly structure and the function keys of the electronic device 2 are arranged at the edge of the shell 21, so that the structural occupation of the functional structural members 22 on the sound-emitting part 11 can be reduced, and the working area of the sound-emitting part 11 and the working performance of the sound-emitting unit 1 can be improved.

The material of the housing 21 may include at least one of glass, plastic, carbon fiber and metal, or the material of the housing 21 may also be other hard materials, which is not limited in this disclosure.

In some embodiments, as shown in fig. 3, the sound-generating driving module 12 includes a sound-generating driving device 121, and the sound-generating driving device 121 is disposed in the central area 111 of the sound-generating portion 11, so as to drive the sound-generating portion 11 to generate sound by vibration through the sound-generating driving device 121 located in the central area 111 of the sound-generating portion 11, thereby forming a mono effect. Taking the electronic device 2 as a television as an example, a back plate of the television can be used as the sound generating part 11, and the sound generating driving device 121 can be arranged in the central area 111 of the back plate to obtain a mono television broadcasting effect.

In other embodiments, the sound-generating driving module 12 includes a plurality of sound-generating driving devices 121, and the sound-generating driving devices 121 are disposed on the sound-generating portion 11. Wherein, a plurality of sound production drive arrangement 121 can even distribution on sound production portion 11 to obtain even vocal effect, promote user's sense of hearing experience. Alternatively, the plurality of sound emission driving devices 121 may be distributed on the sound emission unit 11 according to a specific channel distribution rule, which is not limited by the present disclosure.

In one embodiment, the sound generating portion 11 includes a central position 112, and the sound generating driving module 12 includes at least one pair of sound generating driving devices 121 symmetrically disposed with respect to the central position 112, so as to obtain a stereo effect through the symmetrically disposed sound generating driving devices 121. For example, as shown in fig. 4, the sound emission driving module 12 includes a pair of sound emission driving devices 121 disposed in bilateral symmetry with respect to the center position 112, so that the sound emission portion 11 is driven by the bilateral symmetry sound emission driving devices 121 to generate sound and vibrate, thereby generating a bilateral stereo effect. For example, as shown in fig. 5, the sound emission driving module 12 includes a pair of sound emission driving devices 121 disposed vertically symmetrically with respect to the center position 112, so as to drive the sound emission part 11 to vibrate by sound emission through the vertically symmetrical sound emission driving devices 121, and to form a vertical stereo effect. For example, as shown in fig. 6, the sound-generating driving module 12 includes two pairs of sound-generating driving devices 121 symmetrically disposed left and right with respect to the central position 112, and each pair of sound-generating driving devices 121 is vertically symmetric with respect to the central position 112, so that the four sound-generating driving devices 121 drive the sound-generating portion 11 to generate sound and vibrate, and the formed sound-generating effect includes left, right, upper left surround, and upper right surround, and adds height surround information on the basis of stereo sound, and increases height information and surround in the sense of hearing.

In another embodiment, the sound-emitting driving module 12 includes at least one pair of sound-emitting driving devices 121 symmetrically disposed with respect to the central position 112 and the sound-emitting driving devices 121 disposed at the central position 112. As shown in fig. 7, taking the example that the sound-producing driving module 12 includes a pair of sound-producing driving devices 121 symmetrically disposed with respect to the center position 112, three sound-producing driving devices 121 drive the sound-producing unit 11 to produce sound vibration, thereby generating a left, middle and right three-channel sound effect. As shown in fig. 8, the sound-generating driving module 12 includes two pairs of sound-generating driving devices 121 symmetrically disposed left and right with respect to the central position 112, and each pair of sound-generating driving devices 121 is referred to as an example of up and down with respect to the central position 112, and five sound-generating driving devices 121 drive the sound-generating portion 11 to generate sound and vibrate, so that the formed sound-generating effect includes left, right, upper left surround and upper right surround, and meanwhile, a center channel is provided, and the listening feeling can refine the sound position information in the horizontal direction, and the sound effect is more natural.

In other embodiments, the sound-generating driving module 12 may include a plurality of arrays disposed on the sound-generating driving device 121 of the sound-generating portion 11, so that the sound-generating driving module 12 disposed in the arrays drives the sound-generating portion 11 to generate sound in a vibrating manner, thereby forming a more detailed sound-generating effect. For example, as shown in fig. 9, the sound-generating driving module 12 may include 9 arrays arranged on the sound-generating driving device 121 of the sound-generating portion 11, so that the 9 sound-generating driving modules 12 arranged in the arrays drive the sound-generating portion 11 to generate sound in a vibrating manner, and the sound-generating driving module 12 can refine sound detail position information in cooperation with a sheet source with high quality, thereby improving sound-generating effect.

In the above embodiment, the sound emission loudness of the sound emission unit 1 increases as the number of the sound emission driving devices 121 of the sound emission driving module 12 increases.

The sound-generating driving device 121 may include at least one of an exciter and a piezoelectric ceramic, so as to realize driving vibration of the sound-generating unit 11, and the present disclosure does not limit the type of the sound-generating driving device 121. In addition, the present disclosure does not limit the shape and size of the sound-generating driving device 121, and it is sufficient to realize driving vibration of the sound-generating unit 11 and satisfy sound-generating effects.

The present disclosure further proposes an electronic device 2, as shown in fig. 10, the electronic device 2 includes an audio input interface 23, an audio processing chip 24, a housing 21, and the above-mentioned sound emitting unit 1. The audio processing chip 24 is electrically connected to the audio input interface 23 and the sound-generating driving module 12, respectively, to transmit audio signals to the sound-generating driving module 12, and the sound-generating driving module 12 drives a plurality of regions of the sound-generating portion 11 to generate sound according to the audio signals. The audio input mode can be online playing, U-disk playing, DTV/ATV input, HDMI channel input, AV channel input, and the like. The audio processing chip 24 may include a decoding chip 241 and a power amplifier 242, wherein the decoding chip 241 can perform decoding processing on the audio signal input by the audio input interface 23, and the power amplifier 242 can perform amplification processing on the audio signal.

The electronic device 2 may be a television, a tablet computer, a vehicle-mounted terminal, a medical terminal, a mobile phone, and the like, which is not limited in the present disclosure. Taking the electronic device 2 as a television as an example, the housing 21 of the television includes a back plate, and the sound emission manner of the television is exemplarily described with the back plate as the sound emission portion 11:

for example, when the audio input interface 23 inputs an audio signal of "running water sound", the decoding chip 241 of the audio processing chip 24 decodes the audio signal input by the audio input interface 23, and the power amplifier 242 of the audio processing chip 24 can amplify the decoded audio signal. The audio processing chip 24 sends the amplified audio signal to the sound-generating driving module 12, and the sound-generating driving module 12 controls the sound-generating driving device 121 at the preset position to drive the tv back panel to generate "running water sound" according to the audio signal.

Because sound generating unit 1 can drive a plurality of regional vibrations sound production of sound generation portion 11 through sound production drive arrangement 121, need not the sound production cavity, therefore can avoid occupying electronic equipment 2's space, help promoting electronic equipment 2's frivolity. The sound generating part 11 includes at least a part of the casing 21, the structural strength of the casing 21 is good, and the casing 21 does not include functional modules which are easily interfered by vibration, such as chips, circuit boards, sensors, etc., so that the bending wave resonance formed by the vibration of the casing 21 can not only obtain diffused and non-correlated acoustic radiation, so that the sound bandwidth is increased, the effect is good, but also the sound generating unit 1 and the electronic device 2 using the sound generating unit 1 can be stable, durable and low in cost.

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 disclosure 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 unit is characterized by being applied to an electronic device, wherein the electronic device comprises a shell; the sound emitting unit includes:

a sound emitting portion including at least a portion of the housing;

2. The sound generating unit of claim 1, wherein the housing includes a first region and a second region; the sound emitting portion includes the first region; the electronic device further comprises at least one functional structure, wherein the functional structure is arranged in the second area.

3. The sound generating unit of claim 2, wherein the housing includes a back plate, and the first area is a flat plate structure on the back plate.

4. The sound generating unit according to claim 2, wherein said second area is disposed at a periphery of said first area, and said second area is located at an edge position of said housing.

5. The sound generating unit of claim 2, wherein the functional structure comprises at least one of a connection interface, an assembly structure, and a function key.

6. The sound generating unit according to claim 1, wherein said sound generating driving module includes one of said sound generating driving devices, said sound generating driving device being disposed in a central region of said sound generating portion.

7. The sound generating unit according to claim 1, wherein the sound generating driving module includes a plurality of the sound generating driving devices, and the sound generating driving devices are disposed on the sound generating portion.

8. The sound generating unit according to claim 7, wherein said sound generating portion includes a central position, and said sound generating driving module includes at least one pair of said sound generating driving devices symmetrically disposed with respect to said central position.

9. The sound generating unit of claim 8, wherein the sound generating driver module further comprises the sound generating driver device disposed in the central location.

10. An electronic device comprising an audio input interface, an audio processing chip, a housing, and a sound emitting unit according to any one of claims 1-9;