CN213028451U

CN213028451U - Array microphone large-scale teleconference extensible communication Bluetooth sound box

Info

Publication number: CN213028451U
Application number: CN202022428446.8U
Authority: CN
Inventors: 张军选
Original assignee: Dongguan Taisheng Sound Technology Co ltd
Current assignee: Dongguan Taisheng Sound Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-04-20
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses an array microphone large-scale teleconference expandable conversation Bluetooth sound box, which comprises a shell, a loudspeaker, microphones and a PCB board, wherein the loudspeaker is connected with the PCB board, the shell comprises a lower shell, an upper shell and a net cover, the microphones comprise six, the six microphones are distributed according to a regular triangle structure, meanwhile, a fourth microphone is arranged at the central position of the regular triangle, and the two microphones are respectively arranged on the waist near the outer sides, so that the sound source can be better determined, the useful audio signals at the periphery can be more efficiently collected, and the array microphone large-scale teleconference expandable conversation Bluetooth sound box is more suitable for a large-scale multi-person teleconference; the middle shell is additionally arranged and used for mounting the loudspeaker, the soft rubber suspension is arranged around the middle shell and connected with the upper shell, and the mode that the loudspeaker is directly mounted in the upper shell in the past is changed, so that the vibration of the loudspeaker when the loudspeaker plays audio frequency cannot transfer the microphone to influence the sound receiving quality of the microphone, therefore, reverberation, voice enhancement and blind source separation are effectively removed, and better echo interference prevention and noise reduction effects are achieved.

Description

Array microphone large-scale teleconference extensible communication Bluetooth sound box

Technical Field

The utility model relates to an audio amplifier product technical field, concretely relates to wireless bluetooth conference conversation audio amplifier.

Background

With the development of society, people have more and more demands for meeting discussion of multiple people or communication among family members due to special scenes such as life and work. The traditional communication sound box product also has a communication function, but the traditional communication sound box product is usually only provided with a microphone at a certain position to collect sound signals, the control on the direction is not accurate enough, the inaccurate reception and the multiple noise are easily caused, the communication quality is further influenced, and obvious echo interference exists. In addition, the loudspeaker and the PCB board of the existing sound box are usually directly arranged on the main shell (generally an upper shell), the vibration generated during the operation of the loudspeaker can be directly transmitted to the PCB board, although some sound boxes can be used for cushioning a layer of shock pad on the PCB board, the whole main shell is provided with vibration, so that the shock pad can not effectively filter the vibration, the microphone can be obviously influenced by the vibration, and the sound pickup effect is reduced. Therefore, the accuracy of sound reception, speaker vibration reduction, echo interference prevention, etc. of such devices in use still need to be improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an array microphone large-scale teleconference expanded conversation bluetooth speaker that structural design is more reasonable, shock attenuation effect and prevent that the echo interference is better, the radio reception is more accurate.

In order to solve the technical problem, the utility model adopts the following technical scheme: a large-scale teleconference expandable conversation Bluetooth sound box with an array microphone comprises a shell, a loudspeaker, a microphone and a PCB (printed circuit board), wherein the loudspeaker is connected with the PCB, the PCB is provided with a Bluetooth module, and the microphone is arranged on the PCB; the casing is including casing down, last casing and net lid, and the three combination is with loudspeaker and PCB board fixed assembly, and the PCB board is fixed in last casing, covers its characterized in that with microphone and last casing through the net lid: the microphones comprise six microphones which are arranged at positions close to the edge of one end of the whole sound box in a regular triangle shape, three of the microphones form three vertexes, one microphone is arranged at the center of the whole regular triangle, the remaining two microphones are arranged at two waists of the regular triangle close to the outer side of the sound box, and the loudspeaker is arranged at a position close to the edge of the other end of the whole sound box, so that a microphone working area and a loudspeaker working area are separated as far as possible, and the influence of sound played by the loudspeaker on the sound receiving effect of the microphone is reduced; the lower shell is provided with a middle shell, the loudspeaker is arranged on the middle shell, and the periphery of the middle shell is provided with a circle of damping suspension rings made of soft rubber, so that the upper part of the middle shell is erected in the upper shell through the damping suspension rings.

Furthermore, the inside and outside both sides of shock attenuation hanging ring are flat planar structure, the middle semicircular structure that arches up that then, and whole shock attenuation hanging ring is structure as an organic whole, adopts the TPE material to make through double-shot molding process one shot forming with last casing, can simplify the preparation process flow, improves the reliability of connecting.

Furthermore, the upper shell and the middle shell adopt installation structures which are not in direct contact, and a gap is reserved between the upper shell and the middle shell; the middle shell is hung on the inner side flat bottom surface of the damping suspension ring by the upper end of the outer side, the upper shell is hung on the outer side flat bottom surface of the damping suspension ring by the lower end of the inner side, the semicircular arch part is aligned with the gap between the upper shell and the middle shell, so that the vibration generated during the operation of the loudspeaker can be directly transmitted to the upper shell, the vibration is prevented from further transmitting the vibration to the PCB, and the sound receiving effect of the microphone is ensured.

Furthermore, the bottom end of the middle shell is fixedly connected with the upper end of the lower shell in an inserting mode, and a sealing strip is arranged at the butt joint position of the bottom end of the middle shell and the upper end of the lower shell, so that the sealing effect on the interior of the shell is achieved.

Furthermore, a surface frame is arranged above the upper shell, the surface frame covers the upper shell, and the net cover covers the surface frame; independent microphone cavities which correspond to the microphones and are arranged in a regular triangle shape are arranged in the face frame and close to the edge of one end of the face frame, one microphone cavity corresponds to one microphone, and the microphones are embedded in the microphone cavities.

Furthermore, a sealing ring is arranged on the bottom surface of the net cover corresponding to each microphone cavity, and the net cover and the upper shell are assembled and fixed and then tightly press the sealing gasket around the microphone cavity of the face frame through the sealing ring to form a sealing structure around the microphone cavity, so that reverberation, voice enhancement and blind source separation can be effectively removed, and better echo interference prevention and noise reduction effects are achieved.

Furthermore, the inner wall of the sealing ring is of a wavy fluctuation structure, and the design of the wavy sealing ring can improve the high-frequency resonance frequency, so that the acoustic input effect is improved.

Furthermore, the bottom surface of the net cover is provided with criss-cross reinforcing ribs, and the outer wall of each sealing ring is connected with the reinforcing ribs. Compared with the traditional honeycomb structure, the reinforcing rib structure can simplify the structure of the mold, reduce the injection molding time and reduce the cost.

Furthermore, a touch control panel is arranged at the edge position of one side of the upper shell, and the touch control panel is connected with the PCB so as to realize touch operation.

The utility model adopts six microphones distributed according to the regular triangle structure, and a fourth microphone is arranged at the center of the regular triangle, and a microphone is arranged on the waist of each of the two outer sides, thus better determining the sound source, more efficiently collecting useful audio signals around, and being more suitable for multi-person telephone conferences in large conference rooms; the layout of the microphone and the loudspeaker is optimized, the middle shell is additionally arranged and used for mounting the loudspeaker, the soft rubber suspension is arranged around the middle shell and connected with the upper shell, the mode that the loudspeaker is directly mounted in the upper shell in the past is changed, vibration generated when the loudspeaker plays audio frequency cannot transfer the microphone to influence the sound receiving quality of the microphone, reverberation, voice enhancement and blind source separation can be effectively removed, and better echo interference prevention and noise reduction effects are achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a structural diagram of the utility model with the mesh cover removed;

FIG. 4 is a cross-sectional view of the utility model with the mesh cover and the upper case removed;

FIG. 5 is a view showing an assembly structure of a PCB and a microphone;

fig. 6 is a view showing the structure of the inner surface of the net cover.

In the figure, 1 is an upper shell, 2 is a lower shell, 3 is a net cover, 31 is a reinforcing rib, 32 is a sealing ring, 33 is an inner wall, 4 is a middle shell, 5 is a loudspeaker, 6 is a PCB (printed Circuit Board), 7 is a microphone, 8 is a damping suspension ring, 9 is a touch control panel, and 10 is a surface frame.

Detailed Description

In this embodiment, referring to fig. 1 to 6, the array microphone large-scale teleconference expandable conversation bluetooth sound box includes a housing, a speaker 5, a microphone 7, and a PCB 6, where the speaker 5 is connected to the PCB 6, the PCB 6 has a bluetooth module, and the microphone 7 is disposed on the PCB 6; the shell comprises a lower shell 2, an upper shell 1 and a net cover 3, the combination of the lower shell 2, the upper shell 1 and the net cover 3 fixedly assembles a loudspeaker 5 and a PCB 6, the PCB 6 is fixed in the upper shell 1, and a microphone 7 and the upper shell 1 are covered by the net cover 3; the microphones 7 comprise six microphones which are arranged at positions close to the edge of one end of the whole sound box in a regular triangle shape, three of the microphones 7 form three vertexes, one microphone 7 is arranged at the center of the whole regular triangle, the remaining two microphones 7 are arranged at two waists of the regular triangle close to the outer side of the sound box, and the loudspeaker 5 is arranged at a position close to the edge of the other end of the whole sound box, so that the working areas of the microphones and the loudspeaker are separated as far as possible, and the influence of sound played by the loudspeaker 5 on the sound receiving effect of the microphone 7 is reduced; a middle shell 4 is arranged on the lower shell 2, the loudspeaker 5 is arranged on the middle shell 4, a circle of damping suspension ring 8 made of soft rubber is arranged on the periphery of the middle shell 4, and the upper part of the middle shell 4 is erected in the upper shell 1 through the damping suspension ring 8.

The inside and outside both sides of shock attenuation suspension circle 8 are flat planar structure, the middle structure that then semicircular in shape arch up, and whole shock attenuation suspension circle 8 is structure as an organic whole, adopts TPE material and last casing 1 to make through double-colored injection molding technology one shot forming, can simplify the preparation process flow, improves the reliability of connecting.

The upper shell 1 and the middle shell 4 adopt an installation structure which is not in direct contact, and a gap is reserved between the upper shell and the middle shell; the middle shell 4 is hung on the inner side flat bottom surface of the damping suspension ring 8 by the outer side upper end, the upper shell 1 is hung on the outer side flat bottom surface of the damping suspension ring 8 by the inner side lower end, and the semicircular arch part is aligned with the gap between the upper shell 1 and the middle shell 4, so that the vibration generated during the operation of the loudspeaker 5 can be directly transmitted to the upper shell 1, the vibration is prevented from being further transmitted to the PCB 6, and the sound receiving effect of the microphone 7 is ensured.

The bottom end of the middle shell 4 is fixedly connected with the upper end of the lower shell 2 in an inserting mode, and a sealing strip is arranged at the butt joint position of the bottom end of the middle shell and the upper end of the lower shell to achieve the sealing effect on the inner portion of the shell.

A face frame 10 is arranged above the upper shell 1, the face frame 10 covers the upper shell 1, and the mesh cover 3 covers the face frame 10; independent microphone cavities corresponding to the microphones 7 and arranged in a regular triangle are arranged in the face frame 10 close to the edge of one end, one microphone cavity corresponds to one microphone 7, and the microphones 7 are embedded in the microphone cavities.

The sealing rings 32 are arranged on the bottom surface of the net cover 3 corresponding to each microphone cavity, the sealing gaskets are tightly pressed around the microphone cavity of the face frame 10 through the sealing rings 32 after the net cover 3 and the upper shell 1 are assembled and fixed, a sealing structure around the microphone cavity is formed, reverberation, voice enhancement and blind source separation can be effectively removed, and better echo interference prevention and noise reduction effects are achieved.

The inner wall 33 of the sealing ring 32 is of a wavy undulating structure, and the design of the wavy sealing ring can improve the high-frequency resonant frequency, so that the acoustic input effect is improved.

The bottom surface of the net cover 3 is provided with criss-cross reinforcing ribs 31, and the outer wall of each sealing ring 32 is connected with the reinforcing ribs 31. Compared with the traditional honeycomb structure, the reinforcing rib structure can simplify the structure of the mold, reduce the injection molding time and reduce the cost.

A touch control panel 9 is disposed near one side edge of the upper casing 1, and the touch control panel 9 is connected to the PCB 6 to perform a touch control operation.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.

Claims

1. A large-scale teleconference expandable conversation Bluetooth sound box with an array microphone comprises a shell, a loudspeaker, a microphone and a PCB (printed circuit board), wherein the loudspeaker is connected with the PCB, the PCB is provided with a Bluetooth module, and the microphone is arranged on the PCB; the casing is including casing down, last casing and net lid, and the three combination is with loudspeaker and PCB board fixed assembly, and the PCB board is fixed in last casing, covers its characterized in that with microphone and last casing through the net lid: the microphones comprise six microphones which are arranged at the position close to the edge of one end of the whole sound box in a regular triangle shape, three of the microphones form three vertexes, one microphone is arranged at the center of the whole regular triangle, the rest two microphones are arranged on two waists of the regular triangle close to the outer side of the sound box, and the loudspeaker is arranged at the position close to the edge of the other end of the whole sound box; the lower shell is provided with a middle shell, the loudspeaker is arranged on the middle shell, and the periphery of the middle shell is provided with a circle of damping suspension rings made of soft rubber, so that the upper part of the middle shell is erected in the upper shell through the damping suspension rings.

2. The array microphone mega teleconferencing extensible talking bluetooth speaker of claim 1, wherein: the inside and outside both sides of shock attenuation suspension circle are flat planar structure, the middle structure that then semicircular in shape arch up, and whole shock attenuation suspension circle is structure as an organic whole, adopts the TPE material to make through double-colored injection molding process one shot forming with last casing.

3. The array microphone mega teleconferencing extensible talking bluetooth speaker of claim 2, wherein: the upper shell and the middle shell adopt installation structures which are not in direct contact, and a gap is reserved between the upper shell and the middle shell; the upper end of the middle shell close to the outer side is hung on the bottom surface of the inner side flat surface of the shock absorption hanging ring, the lower end of the upper shell close to the inner side is hung on the bottom surface of the outer side flat surface of the shock absorption hanging ring, and the semicircular arch part is aligned with the gap between the upper shell and the middle shell.

4. The array microphone mega teleconferencing extensible talking bluetooth speaker of claim 1, wherein: the bottom end of the middle shell is fixedly connected with the upper end of the lower shell in an inserting mode, and a sealing strip is arranged at the butt joint position of the bottom end of the middle shell and the upper end of the lower shell.

5. The array microphone mega teleconferencing extensible talking bluetooth speaker of claim 1, wherein: a surface frame is arranged above the upper shell, the surface frame covers the upper shell, and the net cover covers the surface frame; independent microphone cavities which correspond to the microphones and are arranged in a regular triangle shape are arranged in the face frame and close to the edge of one end of the face frame, one microphone cavity corresponds to one microphone, and the microphones are embedded in the microphone cavities.

6. The array microphone mega teleconferencing extensible talking Bluetooth speaker of claim 5, wherein: the bottom surface of the net cover is provided with a sealing ring corresponding to each tooth cavity, and the net cover and the upper shell are assembled and fixed and then tightly press the sealing gasket around the tooth cavity of the face frame through the sealing rings to form a sealing structure around the tooth cavity.

7. The array microphone mega teleconference extensible talking Bluetooth speaker of claim 6, wherein: the inner wall of the sealing ring is of a wavy undulating structure.

8. The array microphone mega teleconference extensible talking Bluetooth speaker of claim 6, wherein: the bottom surface of the net cover is provided with reinforcing ribs which are crossed vertically and horizontally, and the outer wall of each sealing ring is connected with the reinforcing ribs.

9. The array microphone mega teleconferencing extensible talking bluetooth speaker of claim 1, wherein: and a touch control panel is arranged at the edge of one side close to the upper shell and is connected with the PCB.