CN209462573U - a smart speaker - Google Patents

Abstract

The utility model belongs to speaker technology field, it is desirable to provide a kind of intelligent sound box, including main casing, microphone structure, two passive radiators and at least two loudspeakers.Wherein, main casing is in the form of a column structure, cross section is the first side to the gradually smaller shape of second side and has lateral cavity；Microphone structure is set to the speech recognition results that the microphone monomer being arranged on main casing by least two forms array；Two passive radiators are adapted to be installed on the end of main casing respectively and be arranged with seal cavity and its oscillating plate in "eight" shape；One end of loudspeaker is seal-installed in corresponding mounting hole, and the other end accommodates in the cavity, and main casing, double passive radiators and multiple loudspeakers surround closed sound chamber jointly as a result,.Intelligent sound box in the utility model is simple and compact for structure, the subwoofer audio with super strength in limited sound chamber volume, and when interactive voice can clearly pick up the audio signal of sound source, and the experience sense of user is good.

Description

a smart speaker

technical field

The utility model belongs to the technical field of sound boxes, and more specifically relates to an intelligent sound box.

Background technique

With the continuous development of artificial intelligence technology, smart speakers have gradually entered people's daily life. In addition to the basic function of converting audio signals into electrical signals for amplification and processing, and then radiating the corresponding sound for people to listen to, smart speakers can also realize on-demand songs, online shopping, and understanding of weather forecasts, etc. Voice control of devices, such as opening the curtains, setting the temperature of the refrigerator, and heating the water heater in advance, etc. Obviously, the human-computer interaction function of smart speakers is becoming more and more powerful. However, in practical applications, smart speakers often have poor subwoofer sound effects and cannot clearly pick up the audio signal of the sound source during voice interaction, which ultimately leads to poor user experience.

Utility model content

The purpose of the utility model is to provide an intelligent speaker, which is used to solve the technical problems of poor subwoofer sound effect in the speaker, poor sound reception effect during voice interaction, etc., which lead to poor user experience.

In order to solve the above technical problems, the technical solution adopted by the utility model is to provide a smart speaker, which includes:

The main shell has a columnar structure, the cross section of which is gradually reduced from the first side to the second side, and has a transverse cavity. at least two connecting holes;

There are two passive radiators, including a vibrating plate; wherein, the two passive radiators are respectively adapted and installed on the ends of the main shell to seal the cavity, and the two vibrating plates are in the shape of " Eight" shape arrangement;

There are at least two speakers, one end is sealed and installed in the corresponding installation hole, and the other end is accommodated in the cavity; and,

a microphone structure, electrically connected to the speaker, including at least two microphone monomers, each of which is arranged on the main shell;

Wherein, the lateral center distance between two adjacent microphone monomers is 80mm-120mm, and the distance between the sound pickup position of the microphone monomer and the corresponding sounding position of the speaker is greater than or equal to 80mm; The microphone unit is a sealed shock-absorbing cavity structure used to eliminate the influence of the loudspeaker on the sound pickup effect;

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

The smart speaker provided by the utility model includes a main shell, a microphone structure, two passive radiators and at least two loudspeakers, wherein the main shell is in a columnar structure and has a transverse cavity, and the two passive radiators are respectively fitted and installed On the end of the main shell to seal the cavity, one end of the speaker is sealed and installed in the corresponding mounting hole, and the other end is accommodated in the cavity, the main shell, dual passive radiators and multiple speakers together form a closed sound cavity ; On the one hand, by setting the cross-section of the main shell to a shape that gradually decreases from the first side to the second side, the vibration plates of the two passive radiators are arranged in a "eight" shape, thereby expanding the volume of the sound cavity, and then Improve the subwoofer sound effect; on the other hand, through the combination of multiple speakers and dual passive radiators and a reasonable layout, the sound effect is greatly improved and the output sensitivity of the smart speaker is increased; on the other hand, the microphone structure includes at least two A microphone unit, that is, a plurality of microphone units arranged on the main shell form an arrayed voice recognition structure to maximize the elimination of noise, including the sound from the speaker, so as to improve the voice recognition ability and wake-up rate , and ultimately improve the user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the appearance structure of a smart speaker in an embodiment of the utility model;

Fig. 2 is a schematic diagram of the appearance structure of the smart speaker from another angle in the embodiment of the present invention;

Fig. 3 is a schematic diagram of a three-dimensional explosion of a smart speaker in an embodiment of the present invention;

Fig. 4 is a schematic diagram of the three-dimensional structure of the smart speaker after removing the shell in the embodiment of the utility model;

Fig. 5 is the front view of the smart speaker in the embodiment of the present invention after removing the shell and the net cover;

Fig. 6 is a top view of the smart speaker in the embodiment of the present invention after removing the shell and the net cover;

Fig. 7 is a three-dimensional assembly diagram between the main shell and the intermediate connector in the smart speaker in the embodiment of the present invention;

Fig. 8 is a schematic diagram of the three-dimensional structure of the main shell in the smart speaker in the embodiment of the present invention;

Fig. 9 is a plane sectional view of the smart speaker without the shell in the embodiment of the present invention;

Fig. 10 is a partial enlarged view of place A in Fig. 9;

Fig. 11 is a three-dimensional exploded schematic diagram of a microphone unit of a smart speaker in an embodiment of the present invention;

Fig. 12 is a three-dimensional structural schematic diagram of a passive radiator of a smart speaker in an embodiment of the present invention;

Fig. 13 is a three-dimensional sectional view of the passive radiator in Fig. 12;

Fig. 14 is a partial enlarged view of place B in Fig. 13;

Fig. 15 is a schematic diagram of the three-dimensional structure of the speaker of the smart speaker in the embodiment of the present invention;

Fig. 16 is a plane sectional view of the speaker in the embodiment of the present invention;

Fig. 17 is a schematic diagram of the positional relationship among the sound source, the microphone unit and the loudspeaker in the embodiment of the present utility model.

Wherein, the label in the accompanying drawing is as follows:

10-smart speaker, 20-sound source;

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

200-passive radiator, 210-vibrating plate, 211-substrate, 2111-hanging edge, 2112-first ring, 2113-vibrating basin, 2114-convex ring, 212-counterweight, 213-supporting ring, 220 -Bracket, 221-support edge, 222-cavity, 223-groove, 230-sealing ring;

300-speaker, 310-diaphragm, 311-membrane, 312-second ring, 313-blanket, 320-base frame, 330-magnetic shield;

400-microphone unit, 410-bottom cover, 411-first groove, 412-communication hole, 413-seal groove, 420-top cover, 421-second groove, 4211-first slot, 4212-the first Second slot, 422-first sound hole, 423-waterproof groove, 430-acoustic signal conversion component, 431-receiving part, 432-vibration part, 440-first gasket, 441-second sound hole, 450-first Gasket, 460-the second gasket, 461-the third sound hole, 470-the second gasket, 480-waterproof parts;

500-intermediate connector, 510-connecting strip, 520-ear protector, 521-ear hole;

600-net cover, 610-sound outlet group, 620-sound inlet, 630-first cover, 640-second cover; 700-shell, 710-first button, 720-second button, 730- support.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in combination with specific drawings and specific embodiments. Wherein, the same or similar symbols in the drawings of the specific embodiments of the present invention indicate the same or similar elements, or elements with the same or similar functions. It should be understood that the specific embodiments described below are intended to explain the present utility model, and are not intended to limit the present utility model.

It should be noted that when an element is referred to as being “fixed on” or “mounted on” or “provided on” or “connected to” another element, it may 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", "top", "bottom", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", The orientations or positions indicated by "inside" and "outside" are based on the orientations or positions shown in the drawings, and are for convenience of description only, and should not be construed as limitations on the technical solution. In addition, the terms "first" and "second" are only for convenience of description, and cannot be understood as indicating relative importance or implicitly indicating the quantity of technical features. "Plurality" means two or more, unless otherwise clearly and specifically defined. In a word, those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

The implementation of a smart speaker provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 3 , the smart speaker 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 columnar structure. As shown in FIG. 8 , the cross-section of the main housing 100 is in a shape that gradually decreases from the first side 120 to the second side 130. Preferably, the cross-sectional shape of the main housing 100 is gourd-shaped, bottle-shaped or trapezoidal. Of course, in practice , can also be other suitable shapes. Specifically, in this embodiment, the cross-sectional shape of the main housing 100 is gourd-shaped, and more specifically, the cross-section of the main housing 100 is circular on the side close to the first side 120, so as to provide a larger The cavity 110 is convenient to achieve a strong subwoofer sound effect within the limited volume of the cavity 110, which is beneficial to the realization of the subwoofer sound effect of the miniature smart speaker. It should be noted that, generally, the direction from the first side 120 to the second side 1304 is a direction perpendicular to the transverse direction, that is, a longitudinal direction. For example, when the smart speaker 10 is used normally, the first side 120 is the rear side, and the second side 130 is the front side.

As shown in FIG. 8 , in order to facilitate the installation and protection of electronic components such as the 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 of course it is not limited thereto. In addition, in order to rationally arrange various components, the main housing 100 defines at least two installation holes 140 communicating with the cavity 110 on the cavity wall near the second side 130 . It should be noted that the cavity 110 is integrated. In order to simplify the structure of the smart speaker 10 and realize good subwoofer sound effect, the shape of the cavity 110 is similar to that of the main shell 100 . For example, in this 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, or polygonal. In order to simplify the production process, the main shell 100 can be molded by integral injection molding, or can be molded by 3D printing.

As shown in FIG. 3 , FIG. 5 and FIG. 6 , there are two passive radiators 200 , wherein the two passive radiators 200 are respectively adapted and installed on the ends of the main housing 100 to seal the cavity 110 . The passive radiator 200 includes a vibrating plate 210, and the two vibrating plates 210 are arranged in a "eight" shape, so as to expand the volume of the sound cavity, thereby expanding the vibration space of the passive radiator 200, which is beneficial to improving the subwoofer sound effect.

As shown in Figures 5 and 6, there are at least two speakers 300. In this way, the use of multiple speakers 300 can greatly improve the sound effect, transmit the sound to the human ear as soon as possible, and increase the output sensitivity of the smart speaker 10. Wherein, one end of each loudspeaker 300 is sealed and installed in the corresponding installation hole 140 , and the other end is accommodated in the cavity 110 . In this embodiment, two speakers 300 are provided, and the two speakers 300 are lined up horizontally. As shown in FIG. 5 , the lateral center distance L1 between the two speakers 300 is 60 mm-100 mm. Wherein, the main shell 100, the two passive radiators 200 and the two speakers 300 together form a closed sound cavity. In this embodiment, as shown in FIG. 5 , the lateral center distance L2 between the loudspeaker 300 and the corresponding passive radiator 200 is 40mm-60mm. In this way, the smart speaker 10 can achieve a strong subwoofer sound effect within the limited volume of the cavity 110 through the combination of the dual speakers 300 and the dual passive radiators 200 .

It should be noted that, in this embodiment, the loudspeaker 300 is a full-range loudspeaker 300 , so that it is beneficial to well display the sound range of the high, middle and low frequency bands. Of course, in practice, the speaker 300 may also be other suitable frequency bands.

As shown in FIG. 5 and FIG. 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 . In this way, by arranging a plurality of microphone units 400 to form an arrayed speech recognition structure to receive audio signals from the sound source 20 in different locations, it can be understood that the phase difference of the sound waves received by each microphone unit 400 has a significant impact on the sound waves. By filtering, the sound in the environmental background can be removed to the greatest extent, including the sound from the speaker 300, and finally the sound wave from the sound source 20 remains, so the speech recognition ability is improved, and the wake-up rate is also improved correspondingly.

As shown in Figure 6 again, in order to reduce the mutual interference between the microphone monomers 400 and further improve the voice recognition ability and wake-up rate of the microphone structure, the lateral center distance L3 between two adjacent microphone monomers 400 is 80mm-120mm . As shown in Figure 17, in order to reduce the impact of the sound from the loudspeaker 300 on the sound pickup clarity of the microphone unit 400, the distance between the sound pickup position of the microphone unit 400 and the corresponding sounding position of the loudspeaker 300 is greater than or equal to 80mm . Specifically, in this embodiment, as shown in FIG. 17 , the distance L5 between the sound pickup position of the microphone unit 400 and the corresponding sound emission position of the speaker 300 is 80 mm˜120 mm. In this way, it is convenient for the microphone structure to pick up the audio signal from the sound source 20 more clearly, and the wake-up rate of the sound box is higher.

In addition, in order to eliminate the influence of the speaker 300 on the sound pickup effect, the microphone unit 400 has a sealed shock-absorbing cavity structure. It can be understood that when the smart speaker 10 is woken up in the far field, the impact of the sound of the speaker 300 can be eliminated through the sealed shock-absorbing cavity structure, and the impact of the vibration of the smart speaker 10 on the microphone unit 400 due to excessive volume can be reduced. influences. Specifically, in this embodiment, two microphone units 400 are provided, that is, the microphone structure is a dual-microphone speech recognition structure, and correspondingly, the smart speaker is a dual-speaker 300, a dual-passive radiator 200 and a dual-microphone single Body 400 structure. In addition, usually, the two microphone units 400 are on the same plane, and the plane has an included angle with respect to the ground.

As shown in FIG. 3 and FIG. 9 , a circuit board 150 is generally disposed in the cavity 110 of the main housing 100 . Wherein, the circuit board 150 may be provided with a wireless communication module (not shown), a central processing module (not shown), a power supply unit and a button module (not shown), and the like. Specifically, in this embodiment, the power supply device such as the battery 160, the wireless communication module, the button module, the microphone unit 400, and the speaker 300 are respectively electrically connected to the central processing module. Wherein, the wireless communication module may be a Bluetooth module, an infrared sensor module or a Wi-Fi module. As shown in FIG. 1 , the housing 700 is provided with a first key 710 , 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 button 720 is also provided on the casing 700, and the second button 720 may include a power switch button, a Bluetooth button, and the like. Wherein, the first button 710 and the second button 720 are electrically connected to the button module. The details can be determined according to actual needs.

In general, the structure of the smart speaker is simple and compact, it has a strong subwoofer sound effect, and can clearly pick up the audio signal from the sound source. The sound pickup effect of voice interaction is good, and the user's experience is strong.

Furthermore, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in FIG. 1 , FIG. 3 and FIG. 5 , the smart speaker 10 also includes an intermediate connector 500 . As shown in FIG. 7 , the intermediate connecting piece 500 includes a connecting bar 510 and two protective ears 520 . Wherein, as shown in FIG. 5 and FIG. 7 , the connecting bar 510 spans the main housing 100 , and the connecting bar 510 is disposed on the outer wall of the main housing 100 close to the second side 130 . The two ear protectors 520 are respectively connected to the two ends of the connecting bar 510, and the two ear protectors 520 are arranged in a "eight" shape. As shown in FIGS. 5 to 7 , the passive radiator 200 is adapted to be installed in the space enclosed by the corresponding end of the main housing 100 and the corresponding ear protection 520 . Obviously in this way, the internal space of the smart speaker is expanded, and the actual sound cavity can extend from the cavity 110 of the main shell 100 to the cavity 222 of the passive radiator 200, thus, it is beneficial to increase the sound-emitting vibration area of the passive radiator 200 , improve the subwoofer sound effect, so as to bring people a strong sense of presence. As shown in Fig. 3 and Fig. 7, an ear hole 521 is opened on the ear protector 520, and the counterweight 212 of the passive radiator 200 can protrude from the ear hole 521, so that while protecting the passive radiator 200, it does not affect the The source radiator 200 emits sound.

Further, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in Figures 1 to 4, in order to protect the components in the smart speaker 10 and improve the sealing performance of the smart speaker 10, the smart speaker 10 also includes a grille 600 and a housing 700 . Wherein, the net cover 600 is sleeved on the outer wall of the main shell 100 . In order to simplify the structure of the smart speaker 10 and make the overall structure more compact, the mesh cover 600 is adapted to the main casing 100. Understandably, as shown in FIG. 3 , the appearance structure of the mesh cover 600 is basically the same as that of the main casing 100. That is to say, the cross-sectional shape of the net cover 600 is also a shape that gradually decreases from the first side 120 to the second side 130 . As shown in FIG. 4 , in order to better transmit the sound from the speaker 300 , at the position corresponding to the speaker 300 , the mesh cover 600 is provided with a group of sound holes 610 . Usually, the sound outlet group 610 is formed by a honeycomb through-hole layout. As shown in FIG. 4 , in order to facilitate the microphone unit 400 to pick up the audio signal of the sound source 20 , the mesh cover 600 is provided with a sound inlet 620 at a position corresponding to the microphone unit 400 .

It should be noted that, as shown in FIG. 4 , the mesh cover 600 includes a first cover sheet 630 and a second cover sheet 640 . Wherein, on a side close to the first side 120 , the first cover piece 630 is pivotally connected to the second cover piece 640 . Understandably, during installation, it is only necessary to clamp the first cover piece 630 and the second cover piece 640 to the main shell 100 at the same time. Correspondingly, when disassembling and maintaining, after removing the shell 700, the main components on the main shell 100 can be basically seen only by lifting the first cover piece 630. Therefore, it is convenient for installation and maintenance, and it is beneficial to improve production efficiency and improve Product versatility and flexibility.

As shown in Figure 3, in order to protect the main case 100 and the electronic components in the main case 100, the outer shell 700 is sleeved on the outer wall of the net cover 600, that is, the shell 700, the net cover 600 and the main case 100 are arranged from outside to inside. Set up sequentially. In order to make the smart speaker 10 compact in structure and beautiful in appearance, the shell 700 is matched with the grille 600 and the intermediate connecting piece 500 . It can be understood that the shape of the shell 700 is also the same as that of the main body of the main shell 100, that is, its cross-section also has a shape that gradually decreases from the first side 120 to the second side 130, but the shell 700 is an open-loop structure, specifically in There is an opening near the second side 130, and the main shell 100 is a closed-loop structure. Obviously, due to the special shape and structure of the housing 700, when water hits the housing 700, the water can be quickly diverted out by the housing 700 and will not stay on the housing 700 for a long time. Therefore, it is beneficial to reduce the penetration of water into the speaker 300 , Microphone unit 400 and the probability of the inside of the main shell 100, thereby improving the overall sealing performance of the smart speaker 10, slowing down sound leakage and distortion, and enhancing the user's on-the-spot experience. In addition, as shown in FIG. 2 , a support 730 is provided on the outer wall of the casing 700 , so that the smart speaker 10 can be placed conveniently and stably.

Further, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in Figures 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-mentioned sealed and shock-absorbing cavity structure. Specifically, as shown in FIG. 10 and FIG. 11 , a first groove 411 is opened on the top of the bottom cover 410 , and a communication hole 412 is opened on the side wall of the bottom cover 410 , and the communication hole 412 communicates with the first groove 411 . A second groove 421 is defined at the bottom of the upper cover 420 . Correspondingly, a first sound hole 422 is defined at the top of the upper cover 420 . The first sound hole 422 communicates with the second groove 421 . In addition, as shown in FIG. 10 , when the upper cover 420 is closed on the bottom cover 410 , the second groove 421 and the first groove 411 jointly form a sealed cavity. It should be noted that, as shown in FIG. 11 , a sealing groove 413 is provided at the top of the bottom cover 410 , so that when the upper cover 420 and the bottom cover 410 are closed, a sealing ring can be provided in the sealing groove 413 to realize sealing of the upper cover. Seal between 420 and bottom cover 410.

As shown in FIG. 10 , one end of the acoustic signal conversion component 430 is disposed in the first groove 411 with a gap, and the other end is sealed in the second groove 421 . In the axial direction of the first sound hole 422 , the distance between the sound signal conversion component 430 and the bottom cover 410 can be adaptively adjusted according to the vibration frequency of the sound wave received by the first sound hole 422 . Specifically, in this embodiment, as shown in FIG. 10 , in order to facilitate the sound signal conversion component 430 to convert the audio signal into an electrical signal more smoothly, the end of the sound signal conversion component 430 close to the bottom cover 410 is placed in the first groove The depth direction and the width direction of the 411 are all spaced in the first groove 411 .

As shown in Figure 10, the first gasket 440 is arranged on one end of the acoustic signal conversion assembly 430, so as to prevent the conduction between the first sound hole 422 and the second groove 421, and realize the sealing of the other end of the acoustic signal conversion assembly 430 It is arranged in the second groove 421, and slows down the vibration of the whole machine caused by the sound being too loud when the smart speaker 10 plays the sound, so as to slow down the influence of the vibration on the microphone structure, and further reduce the possibility of the howling phenomenon of the microphone structure probability.

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 Figure 10 and Figure 11, a second sound hole 441 is opened on the first gasket 440, wherein the second sound hole 441 communicates with the first sound hole 422 . Usually, in order to improve the waterproof performance and reduce the occurrence of howling, the second sound hole 441 and the first sound hole 422 are arranged in a staggered manner, that is, they are not completely opposite to each other.

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

It should be noted that in this embodiment, in order to improve the anti-interference ability of the microphone structure and effectively utilize the limited cavity structure, the microphone unit 400 adopts a high-sensitivity digital microphone to convert the analog audio signal into a digital signal for processing and transmission. In addition, as shown in FIG. 17 , the speech recognition distance L4 of each microphone unit 400 ranges from 2 m to 4 m.

In general, the microphone structure eliminates the influence of the sound outside the sound source 20 on the clear and accurate pickup of signals by the microphone by adopting the sealed cavity structure and the microphone array speech recognition structure, thereby helping to achieve the smallest echo and the highest voice Recognition and arousal rate.

Furthermore, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in Figures 9 to 11 , the second groove 421 of the upper cover 420 includes a first slot 4211 and a second slot 4212 . In order to transmit the sound wave from the sound source 20 to the sound signal conversion component 430 conveniently, the second slot 4212 communicates with the first sound hole 422 . As shown in FIG. 10 , the size of the second slot 4212 is smaller than that of the first slot 4211 . In this way, the structure of the upper cover 420 is simplified, the structure of the entire microphone is more compact, and it is more conducive to sealing the acoustic signal conversion component 430 in the second groove 421 .

As shown in FIG. 10 and FIG. 11 , the acoustic signal converting component 430 includes a receiving part 431 and a vibrating part 432 . Wherein, the receiving portion 431 is sealingly arranged in the second slot 4212, specifically, the end of the receiving portion 431 is provided with a first gasket 440, that is, the first gasket 440 is located between the end of the receiving portion 431 and the second slot. 4212 between the groove bottoms, so as to prevent the conduction between the first sound hole 422 and the second groove 4212, and realize the sealing setting of the receiving part 431. Understandably, the receiving unit 431 is mainly used to receive the audio signal from the sound source 20 . It should be noted that the first gasket 440 may be a silicone gasket, of course, it may also be other suitable gaskets.

As shown in FIG. 10 , the vibration part 432 is accommodated in the first slot 4211 and the first groove 411 . Specifically, the top end of the vibrating part 432 abuts against the inner bottom wall of the first slot 4211, and the bottom end extends into the first groove 411, so that when receiving sound waves and vibrating, the vibrating part 432 concentrates on the first groove 4211. Displacement occurs in the cavity 110 formed by the slot 4211 and the first groove 411 to form a capacitance change, which is beneficial to ensure the relative position of the acoustic signal conversion component 430 in the sealed cavity, thereby ensuring a firm seal of the receiving portion 431 .

It should be noted that, as shown in FIG. 10 and FIG. 11 , the receiving portion 431 is protrudingly disposed on the vibrating portion 432 . The cross-sectional shapes of the receiving part 431 and the vibrating part 432 can be suitable structures such as polygons, quadrangles, and axisymmetric hexagons, so as to ensure that the sound signal conversion assembly 430 does not rotate in the overall direction when it vibrates and generates displacement. , to ensure that the receiving portion 431 can be firmly sealed, and to improve the structural stability of the entire microphone structure. Correspondingly, the hole shapes of the first slot hole 4211 and the second slot hole 4212 may also be suitable structures such as polygon, quadrangle, and axisymmetric hexagon. Usually, to simplify the structure, the receiving part 431 is adapted to the second slot 4212 , and the vibrating part 432 is adapted to the first slot 4211 .

Furthermore, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in FIG. 10 and FIG. 11 , the microphone unit 400 also includes a first gasket 450 and a second gasket 460 . Wherein, the first spacer 450 is disposed in the first groove 411 , and the first spacer 450 supports the vibrating part 432 of the acoustic signal conversion component 430 . That is, the two ends of the first washer 450 abut against the vibration part 432 and the groove bottom of the first groove 411 respectively. In this way, when the smart speaker 10 makes a sound, the vibration of the whole machine can be slowed down, thereby slowing down the vibration of the sound signal conversion component 430 and the bottom cover 410, thereby further slowing down the probability of howling generated by the microphone structure. As shown in FIG. 10 and FIG. 11 , in order to slow down the vibration between the microphone unit 400 and the main shell 100 of the smart speaker 10 , the microphone unit 400 usually includes a second gasket 470 . Wherein, the second spacer 470 is disposed on the bottom end of the bottom cover 410 .

It should be noted that, in order to ensure the stability of the structure, generally, the cross-sectional shape of the first spacer 450 is the same as the shape of the slot hole of the first groove 411, and the size of the first spacer 450 is slightly smaller than that of the first groove 411. Slot size. In addition, the first gasket 450 and the second gasket 470 can be made of rubber and plastic products such as ethylene-vinyl acetate copolymer (referred to as EVA) and rubber-plastic foam materials made of it, which have the advantages of cushioning and shock resistance. . Of course, in practice, the first gasket 450 and the second gasket 470 may also be gaskets made of other suitable materials.

It should also be noted that, as shown in FIG. 10 and FIG. 11 , in order to waterproof and dustproof the first sound hole 422 , a waterproof groove 423 is opened at the top of the upper cover 420 . Wherein, the first sound hole 422 is opened on 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 sleeved on the end of the upper cover 420 . In this way, the upper cover 420 and the net cover 600 can be sealed at the position where the microphone structure is installed, and the vibration of the microphone structure can be slowed down. Specifically, the two ends of the second gasket 460 respectively abut against the upper cover 420 and the mesh cover 600 , so as to ensure the firm installation of the waterproof member 480 and further reduce the probability of howling of the microphone structure.

As shown in FIG. 11 , the second gasket 460 defines a third sound hole 461 , wherein the third sound hole 461 communicates with the first sound hole 422 . It can be understood that, in the smart speaker 10, the sound waves of the sound source 20 pass through the sound inlet 620 of the mesh cover 600, the third sound hole 461, the first sound hole 422 and the second sound hole 441 of the microphone unit 400 in order to be absorbed. Passed to the acoustic signal conversion component 430.

Further, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in FIG. 12 and FIG. 13 , the passive radiator 200 also includes a bracket 220 . As shown in FIG. 13 , in order to support and position the vibrating plate 210 conveniently, the bracket 220 has a supporting edge 221 . In addition, the bracket 220 defines a cavity 222 along the axial direction, and the cavity 222 is surrounded by the supporting edge 221 . That is, the bracket 220 is a hollow bracket 220 to ensure that the vibrating plate 210 vibrates and produces sound under the action of the air pressure difference between the inside and outside of the sound box. Wherein, the cavity 222 communicates with the cavity 110 of the main shell 100, thereby extending the space of the sound cavity from the cavity 110 of the main shell 100 to the cavity 222 of the passive radiator 200, which is beneficial to realize the subwoofer sound effect .

It should be noted that, in order to make the passive radiator 200 fit and install with the main case 100 , generally, the bracket 220 is adapted to the main case 100 . As shown in the figure, the bracket 220 has a groove 223 on the side close to the main shell 100, so that the sealing ring 230 can be arranged in the groove 223 to ensure the gap between the passive radiator 200 and the main shell 100. tightness of installation.

As shown in FIG. 13 , the vibrating plate 210 includes a base plate 211 , a weight 212 and a support ring 213 . The base plate 211 includes a hanging edge 2111, a first ring 2112 and a vibrating basin 2113 arranged in sequence from outside to inside. As shown in Figures 13 and 14, the hanging edge 2111 is fixedly installed on the outer end surface of the supporting edge 221, and the first ring 2112 and the vibrating basin 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 soft material, which is beneficial to improve the waterproof performance of the passive radiator 200 and facilitates the adjustment of the resonant frequency of the passive radiator 200 . Specifically, in this embodiment, the hanging edge 2111 is made of soft rubber material, preferably butyl rubber (also known as IIR rubber). In practical applications, the hanging edge 2111 can also be made of other suitable soft materials.

It should be noted that, specifically in this embodiment, the vibrating basin 2113 is a planar structure, of course, it may also be a basin-shaped structure or other suitable structures. The first ring 2112 is arranged on the outer periphery of the vibrating basin 2113 and is in a "U" shape. Of course, the first ring 2112 can also be in a suitable structure such as a circle, an ellipse or a rounded rectangle, which can be customized according to actual needs. Certainly. The hanging edge 2111 is disposed on the outer periphery of the first ring 2112 . In practical applications, the specific structure of the vibrating plate 210 is not limited thereto.

As shown in FIG. 13 , in order to adjust the vibration frequency of the vibrating basin 2113 conveniently, the counterweight 212 is arranged on the vibrating basin 2113 . Specifically, in this embodiment, the counterweight 212 is disposed on the outer wall of the vibrating basin 2113 . Actually, the counterweight 212 can also be arranged on the inner wall of the vibrating basin 2113 or other suitable positions of the vibrating basin 2113 . It should be noted that the material of the counterweight 212 may be the same as that of the vibrating basin 2113 or may be different. Specifically, in this embodiment, the counterweight 212 is made of iron. In order to ensure the vibration uniformity and stability of the vibrating basin 2113, the cross-sectional shape of the counterweight 212 is usually the same as that of the vibrating basin 2113. Specifically, in this embodiment, the counterweight 212 is a round block. In addition, the size of the counterweight 212 is the same as the size of the cross section of the vibrating basin 2113. It can be understood that the counterweight 212 is adapted to the vibrating basin 2113 .

In this embodiment, the supporting ring 213 is made of metal material, and as the name suggests, is ring-shaped. Specifically, the supporting ring 213 is an iron ring. As shown in Figures 13 and 14, the support ring 213 is wrapped in the hanging edge 2111, that is, the hard material is wrapped in the soft material, so that the rigidity of the hanging edge 2111 can be enhanced, thereby improving the vibrating plate 210. The rigidity of the support system, thus, firstly, while ensuring the waterproof performance of the passive radiator 200, the anti-seismic performance of the passive radiator 200 is improved, and secondly, the entire vibrating plate 210 will maintain a linear displacement during the vibration process, and will not Generate horizontal cutting vibration, which is beneficial to achieve subwoofer sound effect.

In this embodiment, in order to simplify the structure of the vibrating plate 210 and improve the structural stability of the vibrating plate 210 , the base plate 211 , the counterweight 212 and the supporting ring 213 are integrally formed by a mold. Specifically, the supporting ring 213 is integrally formed in the hanging edge 2111 of the base plate 211 , and the counterweight 212 is integrally formed on the outer wall of the vibrating basin 2113 of the base plate 211 . In practical applications, the structure among the base plate 211 , the counterweight 212 and the support ring 213 is not limited to this structure, for example, the base plate 211 , the counterweight 212 and the support ring 213 may be arranged separately.

In this embodiment, in order to securely connect the vibrating plate 210 to the bracket 220 , the supporting edge 221 of the bracket 220 is provided with an annular hole (not shown in the figure). As shown in FIG. 13 and FIG. 14 , a protruding ring 2114 is formed on the inner wall of the hanging edge 2111 of the vibrating plate 210 , wherein the protruding ring 2114 is tightly fitted and inserted into the annular hole.

Further, as a specific implementation of the smart speaker 10 provided by the present invention, as shown in FIG. 15 and FIG. 16 , the speaker 300 includes a diaphragm 310 . Specifically, in this embodiment, the vibrating membrane 310 has waterproof performance, which can achieve level 7 waterproofing, which is beneficial to ensure that the speaker can be used normally in water. It should be noted that, in this embodiment, the loudspeaker 300 may be a common loudspeaker 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 an antimagnetic shield 330 disposed on the base frame 320 for shielding. Certainly, in order to realize the conversion of the audio signal, the speaker 300 may also include a voice coil (not shown in the figure), a magnetic circuit system (not shown in the figure) and the like. In addition, in order to improve the sealing performance of the speaker 300, the speaker 300 can also include a sealing ring 230 (not shown in the figure), and the sealing ring 230 is arranged at the position of the mounting hole 140. It can be understood that the gap between the mounting hole 140 and the speaker 300 can be Sealing is achieved by a sealing ring 230 .

As shown in FIG. 16 , the vibrating membrane 310 includes a membrane part 311 , a second ring 312 and a crimping edge 313 which are sequentially connected from inside to outside. Specifically, in this embodiment, the membrane part 311 is concave, the second ring 312 is arranged on the outer peripheral edge of the membrane part 311 and is in an inverted "U" shape, and the crimping edge 313 is arranged on the outer periphery of the second ring 312 edge. Usually, the membrane part 311 , the second ring 312 and the crimping edge 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 vibrating membrane 310, the pressure edge 313 is made of butyl rubber material with waterproof performance. Of course, in practice, the crimp 313 can also be made of other suitable materials. In addition, the membrane portion 311 and the second ring 312 of the vibrating membrane 310 are made of aluminum-magnesium alloy material, wherein the percentage of magnesium in the aluminum-magnesium alloy material is more than 40%. Specifically, in this embodiment, the The percentage of magnesium in aluminum-magnesium alloy materials can reach 96%. In this way, while improving the waterproof level of the diaphragm 310, because the rigidity of the diaphragm 310 is good, and the high-frequency ductility is good, it is not only beneficial to increase the overall rigidity of the diaphragm 310, but also to adjust the internal The damping characteristics and the compliance of the vibration of the diaphragm 310 can more effectively reduce the distortion of the sound signal caused by the split vibration of the diaphragm 310 during high-frequency vibration, making the high-frequency curve smoother and the ultra-high frequency bandwidth extended. Therefore, the sense of presence in the sound effect will be stronger, the high frequency will be clear and transparent, and the reproduction of musical instruments will be stronger. Obviously, it is beneficial to realize a full-range micro-speaker with moderate damping, wide dynamic range and rich timbre.

Obviously, the smart speaker 10 has dual speakers 300 side by side in a horizontal cavity structure, the dual passive radiators 200 are arranged on both sides of the smart speaker 10, and the dual microphone unit 400 adopts a sealed shock-absorbing cavity structure. It is set on the main shell 100, that is, it is embedded in the smart speaker 10. Finally, the smart speaker 10 achieves a strong subwoofer sound effect in a limited sound cavity volume through the integration of dual speakers 300 and dual passive radiators 200. , Through the sealed and shock-absorbing frame structure of 400 arrays of dual-microphone units, the echo is greatly reduced and the voice recognition ability is improved. The overall structure is simple and compact, and the user has a strong sense of on-the-spot experience.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the scope of the claims of the present utility model.

Claims (10)

1. a kind of intelligent sound box, which is characterized in that the intelligent sound box includes:

Main casing is in the form of a column structure, and cross section is the first side to the gradually smaller shape of second side, has lateral cavity, is leaning on At least two mounting holes being connected to the cavity are offered in the cavity wall of the side of nearly described second side；

Passive radiator, there are two settings, including oscillating plate；Wherein, two passive radiators be adapted to respectively be installed on it is described To seal the cavity on the end of main casing, two oscillating plates are arranged in "eight" shape；

Loudspeaker is provided at least two, and one end is seal-installed in the corresponding mounting hole, and the other end is housed in the chamber In vivo；And

Microphone structure is electrically connected the loudspeaker, including at least two microphone monomers, each microphone monomer setting In on the main casing；

Wherein, the transverse center distance between the two adjacent microphone monomers is 80mm-120mm, the microphone monomer The distance between pickup position and the sounding position of the corresponding loudspeaker be greater than or equal to 80mm；The microphone monomer For to the seal shock-proof cavity body structure for eliminating influence of the loudspeaker sounding to pickup effect；

The main casing, two passive radiators and the loudspeaker surround closed sound chamber jointly.

2. intelligent sound box according to claim 1, which is characterized in that the intelligent sound box further includes intermediate connector, institute Stating intermediate connector includes:

The main casing is arranged on the lateral wall of described second side across the main casing in connection strap；

Two earflaps are connected on the connection strap both ends, are arranged in "eight" shape；

In the space that the passive radiator adaptation is mounted on the corresponding end of the main casing and the corresponding earflap surrounds.

3. intelligent sound box according to claim 2, which is characterized in that the intelligent sound box further include:

Mesh enclosure is set on the lateral wall of the main casing, is adapted to the main casing, is opened up at the corresponding position of the loudspeaker There is sound outlet hole group, offers sound inlet at the corresponding position of the microphone monomer；With,

Shell, shape is identical as the body shape of the main casing, is set on the lateral wall of the mesh enclosure, with the mesh enclosure and institute State intermediate connector adaptation.

4. intelligent sound box according to claim 1, which is characterized in that there are two the loudspeaker settings, two loudspeakings Transverse center distance between device is 60mm-100mm.

5. intelligent sound box according to claim 1, which is characterized in that the loudspeaker and the corresponding passive radiator Transverse center distance be 40mm-60mm.

6. intelligent sound box according to any one of claims 1 to 5, which is characterized in that the microphone monomer includes:

Bottom cover, top offer the first groove, and the intercommunicating pore communicated with first groove is offered on side wall；

Upper cover, bottom end offer the second groove, and top offers the first sound hole being connected to second groove, are covered on described On bottom cover, wherein closed cavity is collectively formed in second groove and first groove；

Acoustical signal transition components, for one end gap setting in first groove, the other end is sealed at second groove It is interior；And

First washer is arranged on the one end of the acoustical signal transition components, offers communicated with first sound hole Two sound holes, to prevent first sound hole and second groove to be connected；

Wherein, on the axial direction of the first sound hole of Yu Suoshu, the acoustical signal transition components are according to the first sound hole reception sound The vibration frequency of wave can be adjusted adaptively at a distance between the bottom cover；The bottom cover, the upper cover, the acoustical signal conversion group Part and first washer form the seal shock-proof cavity body structure.

7. intelligent sound box according to claim 6, which is characterized in that second groove includes:

First slot；With

Second slot is communicated with first sound hole, and size is less than the size of first slot；

The acoustical signal transition components include:

Receiving unit is sealed in second slot, end be provided with first washer to prevent first sound hole and The second slot conducting；With

Vibration section is contained in first slot and first groove.

8. intelligent sound box according to claim 7, which is characterized in that the microphone monomer further include:

First gasket is set in first groove, supports the vibration section；

Second packing ring is set on the end of the upper cover, offers the third sound hole communicated with first sound hole.

9. intelligent sound box according to any one of claims 1 to 5, which is characterized in that the passive radiator further include:

Bracket has support edge edge, in axial direction on offer by the support edge along the sky for surrounding, being communicated with the cavity Chamber；

The oscillating plate includes substrate, clump weight and support ring；

The substrate includes the outstanding edge, the first ring and vibrating basin set gradually from outside to inside；Wherein, the outstanding edge is by soft Material is made and is fixedly mounted on the outer end face on the support edge edge, and first ring and the vibrating basin are in the sky It is intracavitary hanging；

The clump weight is set on the vibrating basin；The support ring is coated in the outstanding edge, is made of metal material.

10. intelligent sound box according to any one of claims 1 to 5, which is characterized in that the loudspeaker includes vibrating diaphragm, institute Stating vibrating diaphragm includes sequentially connected film portion, the second ring and flanging from the inside to the outside, and the flanging is by the butyl with waterproof performance Rubber material is made, and the film portion and second ring are made of aluminum-magnesium alloy material.