CN111327988A

CN111327988A - Intelligent sound box

Info

Publication number: CN111327988A
Application number: CN201811522877.1A
Authority: CN
Inventors: 贡维勇; 吴海全; 勒费伍赫·米凯尔·伯纳德·安德烈; 师瑞文
Original assignee: Shenzhen Grandsun Electronics Co Ltd
Current assignee: Shenzhen Grandsun Electronics Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2020-06-23

Abstract

The invention belongs to the technical field of sound boxes, and aims to provide an intelligent sound box which comprises a main shell, a microphone structure, two passive radiators and at least two loudspeakers. The main shell is of a columnar structure, the cross section of the main shell is in a shape that the first side is gradually reduced to the second side, and the main shell is provided with a transverse cavity; the microphone structure is arranged on a voice recognition structure formed by at least two microphone monomers arranged on the main shell in an array manner; the two passive radiators are respectively installed on the end part of the main shell in a matching way to seal the cavity, and the vibrating plate of the two passive radiators is arranged in a splayed way; one end of each loudspeaker is hermetically arranged in the corresponding mounting hole, and the other end of each loudspeaker is accommodated in the corresponding cavity, so that the main shell, the double passive radiators and the loudspeakers jointly enclose a closed sound cavity. The intelligent sound box is simple and compact in structure, has super-strong super-bass sound effect in the limited volume of the sound cavity, can clearly pick up audio signals of a sound source during voice interaction, and is good in user experience.

Description

Intelligent sound box

Technical Field

The invention belongs to the technical field of sound boxes, and particularly relates to an intelligent sound box.

Background

With the continuous development of artificial intelligence technology, intelligent sound boxes gradually enter people's daily life. Except for the basic function of converting an audio signal into an electric signal for amplification and then radiating corresponding sound for people to listen, the intelligent sound box can also realize song playing, online shopping, weather forecast knowing and the like, or can also realize voice control on intelligent household equipment, such as opening a curtain, setting the temperature of a refrigerator, heating a water heater in advance and the like, and obviously, the man-machine interaction function of the intelligent sound box is more and more powerful. However, in practical applications, the smart sound box often has poor subwoofer sound effect, and cannot clearly pick up the audio signal of the sound source during voice interaction, which finally results in poor experience of a user.

Disclosure of Invention

The invention aims to provide an intelligent sound box, which is used for solving the technical problem of poor user experience caused by poor ultra-low sound effect in the sound box, poor sound receiving effect during voice interaction and the like.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a smart sound box, this smart sound box includes:

the main shell is of a columnar structure, the cross section of the main shell is in a shape that the first side is gradually reduced to the second side, the main shell is provided with a transverse cavity, and at least two mounting holes communicated with the cavity are formed in the cavity wall of one side close to the second side;

two passive radiators including vibration plates are provided; the two passive radiators are respectively installed on the end part of the main shell in a matching mode so as to seal the cavity, and the two vibrating plates are arranged in a splayed mode;

at least two loudspeakers are arranged, one end of each loudspeaker is hermetically arranged in the corresponding mounting hole, and the other end of each loudspeaker is accommodated in the cavity; and the number of the first and second groups,

the microphone structure is electrically connected with the loudspeaker and comprises at least two microphone monomers, and each microphone monomer is arranged on the main shell;

the distance between the transverse centers of two adjacent microphone single bodies is 80-120 mm, and the distance between the pickup position of the microphone single body and the corresponding sound production position of the loudspeaker is greater than or equal to 80 mm; the microphone single body is a sealed shock absorption cavity structure used for eliminating the influence of the sound production of the loudspeaker on the sound pickup effect;

the main shell, the two passive radiators and the loudspeaker enclose a closed sound cavity together.

The invention provides an intelligent sound box which comprises a main shell, a microphone structure, two passive radiators and at least two loudspeakers, wherein the main shell is of a columnar structure and is provided with a transverse cavity, the two passive radiators are respectively installed on the end part of the main shell in an adaptive mode to seal the cavity, one end of each loudspeaker is installed in a corresponding installation hole in a sealing mode, the other end of each loudspeaker is contained in the cavity, and the main shell, the double passive radiators and the loudspeakers jointly enclose a closed sound cavity; on one hand, the cross section of the main shell is set to be in a shape that the first side is gradually reduced to the second side, and the vibration plates of the two passive radiators are arranged in a splayed shape, so that the volume of the sound cavity is enlarged, and the ultra-low sound effect is improved; on the other hand, the sound output effect is greatly improved and the output sensitivity of the intelligent sound box is increased through the combination and reasonable layout of the plurality of loudspeakers and the double passive radiators; in another aspect, the microphone structure includes at least two microphone units, that is, an array-type voice recognition structure is formed by a plurality of microphone units disposed on the main housing, so as to eliminate noises including sounds emitted by the speaker to the maximum extent, thereby improving voice recognition capability and awakening rate, and finally improving user experience.

Drawings

To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an appearance structure of an intelligent sound box in an angle in the embodiment of the invention;

fig. 2 is a schematic view of an appearance structure of the smart sound box at another angle according to the embodiment of the present invention;

FIG. 3 is a schematic perspective exploded view of an intelligent speaker in an embodiment of the present invention;

fig. 4 is a schematic perspective view of the smart sound box of the embodiment of the present invention with the housing removed;

FIG. 5 is a front view of the smart speaker of the embodiment of the present invention with the housing and the mesh enclosure removed;

FIG. 6 is a top view of the smart speaker of the embodiment of the present invention with the housing and the mesh enclosure removed;

fig. 7 is a perspective assembly view of the main housing and the middle connecting member of the smart sound box according to the embodiment of the present invention;

fig. 8 is a schematic perspective view of a main housing of the smart sound box according to the embodiment of the present invention;

fig. 9 is a plan sectional view of the smart sound box of the embodiment of the present invention with the housing removed;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

fig. 11 is a schematic perspective exploded view of a microphone unit of the smart sound box according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of a passive radiator of the smart sound box according to an embodiment of the present invention;

fig. 13 is a perspective cross-sectional view of the passive radiator of fig. 12;

fig. 14 is a partial enlarged view at B in fig. 13;

fig. 15 is a schematic perspective view of a speaker of the smart sound box according to an embodiment of the present invention;

fig. 16 is a plan sectional view of a speaker in an embodiment of the present invention;

fig. 17 is a schematic diagram of the positional relationship among the sound source, the microphone unit, and the speaker in the embodiment of the present invention.

Wherein the reference numbers in the drawings are as follows:

10-intelligent sound box, 20-sound source;

100-main shell, 110-cavity, 120-first side, 130-second side, 140-mounting hole, 150-circuit board, 160-battery;

200-passive radiator, 210-vibration plate, 211-substrate, 2111-suspension edge, 2112-first folding ring, 2113-vibration basin, 2114-convex ring, 212-counterweight block, 213-supporting ring, 220-bracket, 221-supporting edge, 222-cavity, 223-groove and 230-sealing ring;

300-loudspeaker, 310-diaphragm, 311-membrane part, 312-second corrugated rim, 313-blank holder, 320-pedestal, 330-antimagnetic shielding case;

400-microphone monomer, 410-bottom cover, 411-first groove, 412-communication hole, 413-sealing groove, 420-upper cover, 421-second groove, 4211-first groove hole, 4212-second groove hole, 422-first sound hole, 423-waterproof groove, 430-acoustic signal conversion component, 431-receiving part, 432-vibrating part, 440-first gasket, 441-second sound hole, 450-first gasket, 460-second gasket, 461-third sound hole, 470-second gasket and 480-waterproof piece;

500-middle connecting piece, 510-connecting strip, 520-ear protection and 521-ear hole;

600-mesh enclosure, 610-sound outlet group, 620-sound inlet, 630-first cover sheet, 640-second cover sheet; 700-shell, 710-first key, 720-second key, 730-support.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the specific drawings and specific embodiments. In the drawings of the embodiments of the present invention, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. It should be understood that the following description of specific embodiments is intended to illustrate and not to limit the invention.

It will be understood that when an element is referred to as being "fixed to" or "mounted to" or "provided on" or "connected to" another element, it can be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or position based on the orientation or position shown in the drawings, are for convenience of description only, and are not to be construed as limiting the present disclosure. Furthermore, the terms "first" and "second" are used for convenience of description only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise. In general, the specific meanings of the above terms will be understood by those of ordinary skill in the art as appropriate.

The following describes an implementation of the smart speaker according to the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the smart sound box 10 includes a main housing 100, a passive radiator 200, a speaker 300, and a microphone structure. In order to simplify the structure of the smart speaker 10, the main housing 100 has a cylindrical structure. As shown in fig. 8, the cross-section of the main casing 100 has a shape that gradually decreases from the first side 120 to the second side 130, and the cross-section of the main casing 100 preferably has a gourd shape, a bottle shape, or a trapezoid shape, although in practice, other suitable shapes are also possible. In this embodiment, the cross-sectional shape of the main casing 100 is a gourd-shaped cross-sectional shape, and more specifically, the cross-sectional shape of the main casing 100 is a round shape on a side close to the first side 120, so that a larger cavity 110 can be provided as much as possible, which is convenient for achieving a very strong subwoofer sound effect in a limited cavity 110 volume, i.e., is beneficial to achieving the subwoofer sound effect of the miniature intelligent sound box. It should be noted that, in general, the direction from the first side 120 to the second side 1304 is a direction perpendicular to the transverse direction, i.e., the longitudinal direction. For example, in normal use of smart sound box 10, first side 120 is the rear side and second side 130 is the front side.

As shown in fig. 8, in order to facilitate mounting and protecting electronic components such as a circuit board 150 of the smart speaker and to form a sound cavity, the main housing 100 has a transverse cavity 110. That is, the smart speaker is a horizontal speaker, but is not limited thereto. In addition, for reasonable layout of the components, at least two mounting holes 140 communicating with the cavity 110 are formed on the cavity wall on the side close to the second side 130 of the main housing 100. It should be noted that the chamber 110 is integrally formed. In order to simplify the structure of the smart sound box 10 and to conveniently realize a good subwoofer sound effect, the shape of the cavity 110 is similar to that of the main casing 100. For example, in the present embodiment, the cavity 110 is also a gourd-shaped cavity 110. Of course, in practice, the shape of the cavity 110 is not limited thereto, and may be circular, square, polygonal, or the like. In order to simplify the manufacturing process, the main housing 100 may be integrally injection-molded by a mold, or may be 3D-printed.

As shown in fig. 3, 5 and 6, the passive radiators 200 are provided in two, wherein the two passive radiators 200 are respectively fitted and mounted on the end portions of the main housing 100 to seal the cavity 110. The passive radiator 200 includes the vibration plates 210, and the two vibration plates 210 are arranged in a shape of 'eight', so as to enlarge the volume of the sound cavity, and further enlarge the vibration space of the passive radiator 200, which is beneficial to improving the ultra-low sound effect.

As shown in fig. 5 and 6, at least two speakers 300 are provided, so that the use of a plurality of speakers 300 is advantageous to greatly improve sound output, to transmit sound to human ears as quickly as possible, and to increase output sensitivity of the smart sound box 10. One end of each speaker 300 is hermetically mounted in the corresponding mounting hole 140, and the other end is received in the cavity 110. In the present embodiment, two speakers 300 are provided, the two speakers 300 are arranged in a row in the lateral direction, and as shown in fig. 5, the lateral center distance L1 between the two speakers 300 is 60mm to 100 mm. Wherein, the main casing 100, the two passive radiators 200 and the two speakers 300 together enclose a closed sound cavity. In the present embodiment, as shown in fig. 5 again, the distance L2 between the speaker 300 and the corresponding passive radiator 200 in the lateral direction is 40mm to 60 mm. In this way, the smart sound box 10 can realize a very strong subwoofer effect in a limited volume of the cavity 110 through the combination of the dual speaker 300 and the dual passive radiator 200.

It should be noted that, in the present embodiment, the speaker 300 is a full-band speaker 300, which is favorable for well exhibiting the sound ranges of high, middle and low full bands. Of course, in practice, other suitable frequency bands of speakers 300 may also be used.

As shown in fig. 5 and 6, the microphone structure includes at least two microphone units 400, wherein each microphone unit 400 is disposed on the main housing 100, and each microphone unit 400 in the microphone structure is electrically connected to the speaker 300. Thus, the plurality of microphone units 400 are arranged to form an array-type voice recognition structure so as to receive audio signals emitted by the sound source 20 in different position areas, and understandably, the sound waves are filtered through the phase difference of the sound waves received by the microphone units 400, so that the sound in the environment background can be removed to the maximum extent, including the sound emitted by the loudspeaker 300, and finally the sound waves emitted by the sound source 20 are left, so that the voice recognition capability is improved, and correspondingly, the awakening rate is also improved.

As shown in fig. 6, in order to reduce the mutual interference between the microphone units 400 and further improve the voice recognition capability and the wake-up rate of the microphone structure, the transverse center distance L3 between two adjacent microphone units 400 is 80mm to 120 mm. As shown in fig. 17, in order to reduce the influence of the sound emitted from the speaker 300 on the sound collection clarity of the microphone unit 400, the distance between the sound collection position of the microphone unit 400 and the sound emission position of the corresponding speaker 300 is greater than or equal to 80 mm. Specifically, in the present embodiment, as shown in fig. 17, a distance L5 between the sound pickup position of the microphone unit 400 and the sound emission position of the corresponding speaker 300 is 80mm to 120 mm. Thus, the microphone structure can pick up the audio signal emitted by the sound source 20 more clearly, and the awakening rate of the sound box is higher.

In addition, in order to eliminate the influence of the sound emission of the speaker 300 on the sound pickup effect, the microphone unit 400 is a sealed shock-absorbing cavity structure. It can be understood that, when the smart sound box 10 is woken up in the far field, the sealed shock-absorbing cavity structure can eliminate the influence of the sound of the speaker 300 and reduce the influence of the vibration of the smart sound box 10 on the sound reception of the microphone unit 400 caused by the excessive volume. Specifically, in this embodiment, two microphone units 400 are provided, that is, the microphone structure is a dual-microphone voice recognition structure, and correspondingly, the smart sound box is a dual-speaker 300, a dual-passive radiator 200, and a dual-microphone unit 400 structure. In addition, the two microphone units 400 are generally located on the same plane, and the plane is at an angle with respect to the ground.

As shown in fig. 3 and 9, a circuit board 150 is generally disposed within the cavity 110 of the main housing 100. The circuit board 150 may be provided with a wireless communication module (not shown), a central processing module (not shown), a power supply device, a key module (not shown), and the like. Specifically, in the present embodiment, the power device, such as the battery 160, the wireless communication module, the key module, the microphone unit 400, and the speaker 300, is electrically connected to the central processing module. The wireless communication module can be a Bluetooth module, an infrared sensing module or a Wi-Fi module. As shown in fig. 1, a first key 710 is disposed on the housing 700, and the first key 710 may include a volume adjustment key, a function key, a recording key, and the like. As shown in fig. 2, a second key 720 is further disposed on the housing 700, and the second key 720 may include a power switch key, a bluetooth key, and the like. The first button 710 and the second button 720 are electrically connected to the button module. The concrete can be determined according to actual needs.

On the whole, this intelligent sound box's simple structure is compact, has very strong super bass audio, can clearly pick up the audio signal of the sending of sound source, and the voice interaction pickup effect is good, and user's experience is felt intensely.

Further, as a specific embodiment of the smart sound box 10 provided in the present invention, as shown in fig. 1, fig. 3 and fig. 5, the smart sound box 10 further includes an intermediate connecting member 500. As shown in fig. 7, the intermediate connector 500 includes a connecting strip 510 and two ear protectors 520. Wherein, as shown in fig. 5 and 7, the connection bar 510 crosses the main case 100, and the connection bar 510 is disposed on an outer sidewall of the main case 100 near the second side 130. The two protection lugs 520 are respectively connected to two ends of the connecting strip 510, and the two protection lugs 520 are arranged in a shape of a Chinese character 'ba'. As shown in fig. 5 to 7, the passive radiator 200 is fitted into a space surrounded by the corresponding end of the main housing 100 and the corresponding ear guard 520. Obviously, the internal space of the smart speaker is enlarged, and the actual sound cavity can extend from the cavity 110 of the main casing 100 to the cavity 222 of the passive radiator 200, so that the sound production vibration area of the passive radiator 200 is increased, the ultra-low sound effect is improved, and a strong presence is brought to people. As shown in fig. 3 and 7, the ear protection 520 is provided with an ear hole 521, and the weight 212 of the passive radiator 200 can extend out of the ear hole 521, so that the passive radiator 200 is protected and the sound emission of the passive radiator 200 is not affected.

Further, as shown in fig. 1 to 4, in order to protect various components inside the smart sound box 10 and improve the overall sealing performance of the smart sound box 10, the smart sound box 10 further includes a mesh enclosure 600 and a housing 700, according to a specific embodiment of the smart sound box 10 provided by the present invention. Wherein, the mesh cover 600 is sleeved on the outer sidewall of the main casing 100. In order to simplify the structure of the smart sound box 10 and make the overall structure more compact, the mesh enclosure 600 is adapted to the main housing 100, and it can be understood that, as shown in fig. 3, the appearance structure of the mesh enclosure 600 is substantially the same as that of the main housing 100, that is, the cross-sectional shape of the mesh enclosure 600 is also a shape that the first side 120 gradually becomes smaller toward the second side 130. As shown in fig. 4, in order to better transmit the sound emitted from the speaker 300 to the environment, a sound hole group 610 is opened on the mesh cover 600 at a position corresponding to the speaker 300. Typically, the sound outlet group 610 is formed by a honeycomb-like arrangement of through holes. As shown in fig. 4, in order to facilitate the microphone unit 400 to pick up the audio signal of the sound source 20, a sound inlet hole 620 is formed in the mesh cover 600 at a position corresponding to the microphone unit 400.

Note that, as shown in fig. 4, the mesh cover 600 includes a first cover sheet 630 and a second cover sheet 640. Wherein the first cover piece 630 is pivotally connected to the second cover piece 640 at a side close to the first side 120. It is understood that the first cover piece 630 and the second cover piece 640 are only required to be clamped to the main housing 100 at the same time when being installed. Correspondingly, when the main housing 100 is disassembled for maintenance, after the housing 700 is removed, the main components on the main housing 100 can be basically seen only by lifting the first cover sheet 630, so that the main housing is convenient to install and maintain, beneficial to improving the production efficiency and improving the universality and flexibility of the product.

As shown in fig. 3, in order to protect the main housing 100 and the electronic components inside the main housing 100, the housing 700 is sleeved on the outer sidewall of the mesh enclosure 600, that is, the housing 700, the mesh enclosure 600 and the main housing 100 are sequentially sleeved from outside to inside. In order to make the smart sound box 10 compact and beautiful in appearance, the housing 700 is fitted with the mesh enclosure 600 and the intermediate connection member 500. It is understood that the shape of the outer shell 700 is the same as the main body shape of the main shell 100, i.e. the cross section thereof is gradually reduced from the first side 120 to the second side 130, except that the outer shell 700 is an open-loop structure, specifically, an opening is formed at a side close to the second side 130, and the main shell 100 is a closed-loop structure. Obviously because of the special appearance structure of shell 700, when water hits shell 700, water can be gone out by shell 700 rapid water conservancy diversion and can not stop on shell 700 for a large amount of long-times, so, do benefit to and reduce the probability that water permeates speaker 300, microphone monomer 400 and main casing 100 in, and then improve intelligent audio amplifier 10's whole sealing performance, slow down sound and reveal and the distortion, reinforcing user's on-the-spot impression. In addition, as shown in fig. 2, a support 730 is disposed on an outer side wall of the housing 700, so that the smart sound box 10 is conveniently and stably placed.

Further, as an embodiment of the smart sound box 10 provided by the present invention, as shown in fig. 9 to 11, the microphone unit 400 includes a bottom cover 410, an upper cover 420, an acoustic signal conversion assembly 430, and a first gasket 440. Wherein the bottom cover 410, the upper cover 420, the acoustic signal conversion assembly 430 and the first gasket 440 form the above-described sealed shock-absorbing chamber structure. Specifically, as shown in fig. 10 and 11, a first groove 411 is formed at the top end of the bottom cover 410, and a communication hole 412 is formed at the side wall of the bottom cover 410, the communication hole 412 communicating with the first groove 411. The bottom end of the upper cover 420 is formed with a second recess 421, correspondingly, the top end of the upper cover 420 is formed with a first sound hole 422, and the first sound hole 422 is communicated with the second recess 421. In addition, as shown in fig. 10, when the upper cover 420 is covered on the bottom cover 410, the second groove 421 and the first groove 411 together form a closed cavity. It should be noted that, as shown in fig. 11, a sealing groove 413 is further formed at the top end of the bottom cover 410, so that when the upper cover 420 and the bottom cover 410 are covered, a sealing ring is disposed in the sealing groove 413 to seal between the upper cover 420 and the bottom cover 410.

As shown in fig. 10, one end of the acoustic signal conversion assembly 430 is disposed in the first recess 411 with a gap, and the other end is disposed in the second recess 421 with a seal. In the axial direction of the first sound hole 422, the distance between the acoustic signal conversion device 430 and the bottom cover 410 can be adaptively adjusted according to the vibration frequency of the first sound hole 422 receiving the sound wave. Specifically, in this embodiment, as shown in fig. 10 again, in order to facilitate the acoustic signal conversion assembly 430 to convert the audio signal into the electrical signal more smoothly, one end of the acoustic signal conversion assembly 430 close to the bottom cover 410 is disposed in the first groove 411 with a gap in both the depth direction and the width direction of the first groove 411.

As shown in fig. 10, the first gasket 440 is disposed on an end of the acoustic signal conversion assembly 430, so as to prevent the first sound hole 422 and the second groove 421 from being conducted, to achieve the purpose of sealing the other end of the acoustic signal conversion assembly 430 in the second groove 421, and to reduce the vibration of the smart sound box 10 caused by the excessive sound when playing sound, so as to reduce the influence of the vibration on the microphone structure, and further reduce the possibility of the microphone structure generating howling.

In addition, in order to transmit the audio signal from the sound source 20 to the acoustic signal conversion assembly 430 more smoothly, as shown in fig. 10 and 11, the first gasket 440 is formed with a second sound hole 441, wherein the second sound hole 441 is communicated with the first sound hole 422. In general, in order to improve waterproof performance and reduce occurrence of squeal, the second sound hole 441 and the first sound hole 422 are disposed to be staggered, that is, not to be completely opposite to each other.

As can be understood from the above, the communication hole 412, the first recess 411 and the second recess 421 form a communication space in which the acoustic signal conversion assembly 430 can adjust the internal capacitance depending on the distance from the bottom cover 410, thereby converting the received audio signal of the sound source 20 into an electrical signal to be transmitted to a corresponding circuit for signal processing. Because the end of the acoustic signal conversion assembly 430 close to the first sound hole 422 is hermetically disposed in the second recess 421, the first sound hole 422 is not connected to the second recess 421, that is, the first sound hole 422 is not connected to the communication hole 412 of the bottom cover 410, so that the microphone unit 400 can form a sealed cavity structure, thereby reducing attenuation of high frequency, improving definition of low voice, and preventing howling.

It should be noted that, in this embodiment, in order to improve the anti-interference capability of the microphone structure and effectively utilize the limited cavity structure, the microphone unit 400 employs a high-sensitivity digital microphone to convert the analog audio signal into a digital signal for processing and transmission. As shown in fig. 17, the voice recognition distance L4 of each microphone unit 400 is in the range of 2m to 4 m.

Generally, the microphone structure eliminates the influence of sound outside the sound source 20 on the microphone to clearly and accurately pick up signals by adopting a sealed cavity structure and a microphone array type voice recognition structure, thereby being beneficial to achieving the minimum echo and the highest voice recognition force and awakening rate.

Further, as a specific embodiment of the smart sound box 10 provided by the present invention, as shown in fig. 9 to 11, the second groove 421 of the upper cover 420 includes a first groove hole 4211 and a second groove hole 4212. To facilitate the transmission of the sound wave of the sound source 20 to the acoustic signal conversion assembly 430, the second slot 4212 communicates with the first acoustic port 422. As shown in fig. 10, the size of the second slot 4212 is smaller than the size of the first slot 4211. In this way, the structure of the upper cover 420 is simplified, the whole microphone structure is more compact, and the sealing of the acoustic signal conversion assembly 430 in the second groove 421 is more easily achieved.

As shown in fig. 10 and 11, the acoustic signal conversion member 430 includes a receiving part 431 and a vibrating part 432. The receiving portion 431 is hermetically disposed in the second slot 4212, and specifically, the end of the receiving portion 431 is disposed with the first gasket 440, that is, the first gasket 440 is located between the end of the receiving portion 431 and the bottom of the second slot 4212, so as to prevent the first sound hole 422 and the second slot 4212 from being conducted, and thus, the receiving portion 431 is hermetically disposed. As can be appreciated, the receiving portion 431 is primarily used to receive audio signals emitted by the sound source 20. It should be noted that the first gasket 440 may be a silicone gasket, but of course, other suitable gaskets may be used.

As shown in fig. 10, the vibrating portion 432 is accommodated in the first slot 4211 and the first recess 411. Specifically, the top end of the vibrating portion 432 abuts against the inner bottom wall of the first slot 4211, and the bottom end of the vibrating portion 432 extends into the first groove 411, so that when sound waves are received and vibrated, the vibrating portion 432 is concentrated in the cavity 110 formed by the first slot 4211 and the first groove 411 and is displaced to form capacitance change, which is beneficial to ensuring the relative position of the acoustic signal conversion assembly 430 in the sealed cavity, and further ensuring the firm sealing of the receiving portion 431.

As shown in fig. 10 and 11, the receiving portion 431 is provided to protrude from the vibrating portion 432. The cross-sectional shapes of the receiving portion 431 and the vibrating portion 432 may be polygonal, quadrilateral, axisymmetric hexagon, etc. suitable structures, which is beneficial to ensure that the whole acoustic signal conversion assembly 430 does not rotate circumferentially when generating displacement due to vibration, ensure that the receiving portion 431 can be firmly sealed, and improve the structural stability of the whole microphone structure. Correspondingly, the hole shapes of the first slot 4211 and the second slot 4212 may be polygonal, quadrangular, axisymmetrical hexagonal, or other suitable structures. Generally, to simplify the structure, the receiving portion 431 is fitted to the second slot 4212, and the vibrating portion 432 is fitted to the first slot 4211.

Further, as a specific embodiment of the smart sound box 10 provided in the present invention, as shown in fig. 10 and 11, the microphone unit 400 further includes a first gasket 450 and a second gasket 460. The first pad 450 is disposed in the first groove 411, and the first pad 450 supports the vibrating portion 432 of the acoustic signal conversion assembly 430. That is, both ends of the first gasket 450 abut on the vibrating portion 432 and the groove bottom of the first recess 411, respectively. Thus, when the smart sound box 10 sounds, the vibration of the whole speaker can be reduced, and the vibration of the acoustic signal conversion assembly 430 and the bottom cover 410 can be reduced, so as to further reduce the possibility of the microphone structure generating whistling. As further shown in fig. 10 and 11, in order to reduce the vibration between the microphone unit 400 and the main housing 100 of the smart sound box 10, the microphone unit 400 typically further includes a second spacer 470. Wherein the second gasket 470 is disposed on the bottom end of the bottom cover 410.

Note that, in order to ensure structural stability, the cross-sectional shape of the first pad 450 is generally the same as the shape of the slot of the first slot 411, and the size of the first pad 450 is slightly smaller than the size of the slot of the first slot 411. In addition, the first pad 450 and the second pad 470 may be formed by molding an ethylene-vinyl acetate copolymer (EVA for short) and rubber-plastic products such as rubber-plastic foam materials made of the EVA, and have the advantages of buffering, shock resistance, and the like. Of course, in practice, other suitable materials for the first and

second shims

450, 470 may be used.

As shown in fig. 10 and 11, a waterproof groove 423 is formed at the top end of the upper cover 420 to prevent water and dust in the first sound hole 422. The first sound hole 422 is opened in the bottom of the waterproof groove 423. Correspondingly, the microphone unit 400 further includes a waterproof member 480, wherein the waterproof member 480 is disposed in the waterproof groove 423 to cover the first sound hole 422.

As shown in fig. 10, the second gasket 460 is fitted over an end of the upper cap 420. In this way, the upper cover 420 and the mesh cover 600 can be sealed at the position where the microphone structure is installed, and vibration of the microphone structure can be reduced. Specifically, two ends of the second gasket 460 respectively abut against the upper cover 420 and the mesh enclosure 600, so as to ensure the waterproof member 480 to be firmly mounted, and further reduce the possibility of squealing the microphone structure.

As shown in fig. 11, the second gasket 460 defines a third sound hole 461, wherein the third sound hole 461 is communicated with the first sound hole 422. As can be understood, in the smart sound box 10, the sound wave of the sound source 20 is transmitted to the acoustic signal conversion assembly 430 through the sound inlet hole 620 of the mesh cover 600, the third sound hole 461 of the microphone unit 400, the first sound hole 422 and the second sound hole 441 in sequence.

Further, as an embodiment of the smart sound box 10 provided in the present invention, as shown in fig. 12 and 13, the passive radiator 200 further includes a bracket 220. As shown in fig. 13, the supporter 220 has a supporting edge 221 in order to facilitate the support and positioning of the vibration plate 210. In addition, the bracket 220 is opened with a cavity 222 in the axial direction, and the cavity 222 is surrounded by the support rim 221. That is, the support 220 is a hollow support 220, which is beneficial to ensure that the vibration plate 210 vibrates and generates sound under the action of the air pressure difference between the inside and the outside of the sound box. The cavity 222 is communicated with the cavity 110 of the main casing 100, so that the space of the sound cavity extends from the cavity 110 of the main casing 100 to the cavity 222 of the passive radiator 200, which is beneficial to realizing the ultra-low sound effect.

Note that, in order to fit the passive radiator 200 to the main housing 100, the bracket 220 is generally fitted to the main housing 100. As shown in the drawing, the bracket 220 is formed with a groove 223 at a side close to the main housing 100, so that the sealing ring 230 is disposed in the groove 223, thereby ensuring the sealing property of the installation between the passive radiator 200 and the main housing 100.

As shown in fig. 13, the vibration plate 210 includes a substrate 211, a weight 212, and a support ring 213. The base plate 211 comprises a hanging edge 2111, a first folding ring 2112 and a vibration basin 2113 which are arranged in sequence from outside to inside. As shown in fig. 13 and 14, the hanging edge 2111 is fixedly mounted on the outer end surface of the supporting edge 221, and the first fold 2112 and the vibrating bowl 2113 are suspended in the cavity 222, so that the entire substrate 211 can be supported by the bracket 220. In addition, the hanging edge 2111 is made of a soft material, so that the waterproof performance of the passive radiator 200 is improved, and the resonant frequency of the passive radiator 200 is adjusted. Specifically, in this embodiment, the overhanging edge 2111 is made of a soft rubber material, preferably butyl rubber (also called IIR rubber), and in practical applications, the overhanging edge 2111 may also be made of other suitable soft materials.

It should be noted that, in this embodiment, the vibration basin 2113 has a planar structure, but may also have a basin-shaped structure or other suitable structures. The first folding ring 2112 is disposed on the outer periphery of the vibration basin 2113 and is "U" shaped, and of course, the first folding ring 2112 may also be in a circular, oval, or rectangular shape with rounded corners, and the like, which may be determined according to actual needs. The overhang 2111 is provided at the outer periphery of the first tab 2112. In practical applications, the specific structure of the vibration plate 210 is not limited thereto.

As shown in fig. 13, to facilitate adjustment of the vibration frequency of the vibration tub 2113, a weight 212 is provided on the vibration tub 2113. Specifically, in the present embodiment, the weight 212 is disposed on the outer wall of the vibration basin 2113. Indeed, the weight 212 may also be disposed on an inner wall of the vibration tub 2113 or other suitable location of the vibration tub 2113. Note that the material of the weight 212 may be the same as or different from that of the vibration tub 2113. Specifically, in the present embodiment, the weight 212 is made of iron. To ensure the uniformity and smoothness of the vibration tub 2113, the cross-sectional shape of the weight 212 is generally the same as the cross-sectional shape of the vibration tub 2113, and in this embodiment, the weight 212 is a circular block. In addition, the weight 212 has the same size as the cross-section of the vibration tub 2113. As can be appreciated, the weight 212 fits into the vibration basin 2113.

In the present embodiment, the support ring 213 is made of a metal material, and as the name suggests, has a ring shape. Specifically, the support ring 213 is an iron ring. As shown in fig. 13 and 14, the support ring 213 is wrapped in the overhanging edge 2111, that is, the soft material is wrapped in the hard material, so that the rigidity of the overhanging edge 2111 can be enhanced, thereby improving the rigidity of the support system of the vibration plate 210, and therefore, firstly, the waterproof performance of the passive radiator 200 is ensured, and simultaneously, the anti-seismic performance of the passive radiator 200 is improved, secondly, the whole vibration plate 210 keeps linear displacement in the vibration process, and does not generate transverse cutting vibration, which is beneficial to realizing the ultra-low sound effect.

In the present embodiment, in order to simplify the structure of the vibration plate 210 and improve the structural stability of the vibration plate 210, the substrate 211, the weight block 212, and the support ring 213 are integrally formed by a mold. Specifically, the support ring 213 is integrally formed in the overhang 2111 of the base plate 211, and the weight 212 is integrally formed on the outer wall of the vibration tub 2113 of the base plate 211. Of course, in practical applications, the positions between the substrate 211, the weight 212 and the supporting ring 213 are not limited to this structure, for example, the substrate 211, the weight 212 and the supporting ring 213 may be separately disposed.

In the present embodiment, in order to facilitate the firm connection of the vibration plate 210 to the bracket 220, a ring-shaped hole (not shown) is formed on the supporting edge 221 of the bracket 220. As shown in fig. 13 and 14, a protruding ring 2114 is formed on the inner wall of the overhanging fringe 2111 of the vibrating plate 210, wherein the protruding ring 2114 is inserted into the annular hole in a tight fit.

Further, as a specific embodiment of the smart sound box 10 provided in the present invention, as shown in fig. 15 and 16, the speaker 300 includes a diaphragm 310. In this embodiment, the diaphragm 310 has waterproof performance, so that 7-level waterproof performance can be realized, and normal use of the sound box in water can be ensured. It should be noted that, in the present embodiment, the speaker 300 may be a general speaker 300 structure, or may be a special structure. For example, as shown in fig. 15, the speaker 300 may further include a base frame 320 supporting the diaphragm 310 and a antimagnetic shield 330 disposed on the base frame 320 for shielding. Of course, the speaker 300 may further include a voice coil (not shown), a magnetic circuit system (not shown), and the like to realize the conversion of the audio signal. In addition, in order to improve the sealing performance of the speaker 300, the speaker 300 may further include a sealing ring 230 (not shown), the sealing ring 230 is disposed at the position of the mounting hole 140, and it is understood that the sealing between the mounting hole 140 and the speaker 300 may be achieved by the sealing ring 230.

As shown in fig. 16, the diaphragm 310 includes a membrane portion 311, a second flange 312, and a pressing edge 313 connected in sequence from inside to outside. Specifically, in this embodiment, the film portion 311 is concave, the second flange 312 is disposed on the outer periphery of the film portion 311 and is in an inverted "U" shape, and the pressing edge 313 is disposed on the outer periphery of the second flange 312. Typically, the film portion 311, the second flange 312, and the binder 313 are integrally formed. Of course, in practical applications, the specific structure of the diaphragm 310 is not limited thereto.

In order to improve the waterproof performance of the diaphragm 310, the edge pressing 313 is made of a butyl rubber material having waterproof performance. Of course, in practice, edge 313 could also be made of other suitable materials. In addition, the membrane portion 311 and the second flange 312 of the diaphragm 310 are made of an al-mg alloy material, wherein the percentage content of mg in the al-mg alloy material is more than 40%, and specifically in this embodiment, the percentage content of mg in the adopted al-mg alloy material may reach 96%. Like this, when improving the waterproof rank of vibrating diaphragm 310, rigidity because of vibrating diaphragm 310 is good, high frequency ductility is good, not only do benefit to when the whole rigidity of increase vibrating diaphragm 310, can also compromise the compliance of the inside damping characteristic of adjustment vibrating diaphragm 310 and vibrating diaphragm 310 vibration, reduce the sound signal distortion that the vibration and lead to of splitting of vibrating diaphragm 310 when high-frequency vibration more effectively, make the high frequency curve become more level and smooth, ultrahigh frequency width can extend, so, the sense of presence can be stronger on the audio, the high frequency is clear penetrating, the reappearance dynamics of musical instrument can be stronger. Obviously, the full-frequency micro loudspeaker with moderate damping, wide dynamic range and rich timbre is favorably realized.

It is obvious from the above that, the dual speakers 300 of the smart sound box 10 are parallel to each other in the horizontal cavity structure, the dual passive radiators 200 are disposed on two sides of the smart sound box 10, the dual microphone units 400 are disposed on the main casing 100 by adopting the sealed damping cavity structure, that is, embedded in the smart sound box 10, and finally the smart sound box 10 achieves a very strong ultra-low sound effect in the limited volume of the sound cavity by the integrated arrangement of the dual speakers 300 and the dual passive radiators 200, and the array type sealed damping frame structure of the dual microphone units 400 greatly reduces the echo and improves the voice recognition capability, the overall structure is simple and compact, and the user experience is strong.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A smart sound box, comprising:

2. The smart sound box of claim 1, further comprising an intermediate connection, the intermediate connection comprising:

the connecting strip spans the main shell and is arranged on the outer side wall of the main shell close to the second side;

the two ear protectors are respectively connected to the two ends of the connecting strip and are arranged in a splayed shape;

the passive radiator is installed in a space defined by the corresponding end of the main shell and the corresponding guard ear in a matching mode.

3. The smart sound box of claim 2, further comprising:

the mesh enclosure is sleeved on the outer side wall of the main shell and is matched with the main shell, a sound outlet hole group is arranged at the position corresponding to the loudspeaker, and a sound inlet hole is arranged at the position corresponding to the microphone monomer; and the combination of (a) and (b),

and the shell is in the same shape as the main body of the main shell, is sleeved on the outer side wall of the mesh enclosure and is matched with the mesh enclosure and the intermediate connecting piece.

4. The smart sound box of claim 1, wherein there are two speakers, and the distance between the two speakers is 60mm to 100 mm.

5. The smart sound box of claim 1, wherein the speaker is spaced from a lateral center of the corresponding passive radiator by a distance of 40mm to 60 mm.

6. The smart sound box of any one of claims 1 to 5, wherein the microphone unit comprises:

the top end of the bottom cover is provided with a first groove, and the side wall of the bottom cover is provided with a communicating hole communicated with the first groove;

the bottom end of the upper cover is provided with a second groove, the top end of the upper cover is provided with a first sound hole communicated with the second groove, and the upper cover covers the bottom cover, wherein the second groove and the first groove jointly form a closed cavity;

one end of the acoustic signal conversion component is arranged in the first groove in a clearance mode, and the other end of the acoustic signal conversion component is arranged in the second groove in a sealing mode; and the number of the first and second groups,

the first gasket is arranged on one end part of the acoustic signal conversion component and is provided with a second sound hole communicated with the first sound hole so as to prevent the first sound hole from being communicated with the second groove;

in the axial direction of the first sound hole, the acoustic signal conversion component can adaptively adjust the distance between the acoustic signal conversion component and the bottom cover according to the vibration frequency of the first sound hole for receiving acoustic waves; the bottom cover, the upper cover, the acoustic signal conversion assembly and the first gasket form the sealed shock-absorbing cavity structure.

7. The smart sound box of claim 6, wherein the second recess comprises:

a first slot; and

the second slotted hole is communicated with the first sound hole and is smaller than the first slotted hole in size;

the acoustic signal conversion assembly includes:

the receiving part is arranged in the second slotted hole in a sealing mode, and the end part of the receiving part is provided with the first gasket to prevent the first sound hole and the second slotted hole from being communicated; and

and the vibrating part is accommodated in the first slotted hole and the first groove.

8. The smart sound box of claim 7, wherein the microphone unit further comprises:

the first gasket is arranged in the first groove and supports the vibrating part;

and the second gasket is sleeved on the end part of the upper cover and is provided with a third sound hole communicated with the first sound hole.

9. The smart sound box of any one of claims 1 to 5, wherein the passive radiator further comprises:

the bracket is provided with a supporting edge, and a cavity which is surrounded by the supporting edge and communicated with the cavity is formed in the axial direction;

the vibrating plate comprises a substrate, a balancing weight and a supporting ring;

the base plate comprises a suspension edge, a first folding ring and a vibrating basin which are sequentially arranged from outside to inside; the suspension edge is made of soft materials and is fixedly installed on the outer end face of the supporting edge, and the first folding ring and the vibrating basin are suspended in the cavity;

the balancing weight is arranged on the vibration basin; the support ring is wrapped in the suspension edge and made of metal materials.

10. The smart sound box according to any one of claims 1 to 5, wherein the speaker comprises a diaphragm, the diaphragm comprises a membrane portion, a second edge ring and an edge pressing, the membrane portion, the second edge ring and the edge pressing are sequentially connected from inside to outside, the edge pressing is made of a waterproof butyl rubber material, the membrane portion and the second edge ring are made of an aluminum-magnesium alloy material, and the percentage content of magnesium in the aluminum-magnesium alloy material is more than 40%.