CN219372588U

CN219372588U - Conference speaker sound cavity vibration reduction structure

Info

Publication number: CN219372588U
Application number: CN202320352114.7U
Authority: CN
Inventors: 陈炳佐; 黄文玲
Original assignee: Shenzhen Aoni Electronic Co ltd
Current assignee: Shenzhen Aoni Electronic Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-07-18
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to a sound cavity vibration reduction structure of a conference loudspeaker, which comprises a sound generating unit, a shell and an air spring. The air spring is connected with the sounding unit and the shell. The conference loudspeaker sound cavity vibration reduction structure utilizes the unique advantages of the air spring, so that the vibration reduction effect is better, and the vibration energy of the sound cavity is reduced and transmitted to the outer shell. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved. In addition, the connecting piece is connected with the air spring and the mounting seat, and the sound cavity shell is clamped on the air spring, so that the assembly is simpler and more convenient.

Description

Conference speaker sound cavity vibration reduction structure

Technical Field

The utility model relates to the technical field of conference omnidirectional microphones, in particular to a conference loudspeaker sound cavity vibration reduction structure.

Background

Conventional conference speakers typically use screws to secure the speaker to the housing, and in this manner, vibrations are generated during sound production by the speaker, which are conducted to the housing and to the internal inductive diaphragm of the microphone in which the housing is located. Later, improvements have emerged to mount speakers on the sound chamber using springs or soft rubber pads to reduce certain vibrations and improve the voice communication quality of conference speakers. However, the conference speaker belongs to the voice communication equipment, the requirement of conversation quality is high, the vibration reduction effect brought by the two vibration reduction structures is still poor, and the vibration reduction effect is limited.

Patent number: CN 113038346A-A loudspeaker sound cavity damping structure and intelligent sound box, it utilizes the spring piece to damp, and its damping moves the effect limited, and there is spring self-excitation noise in the spring piece damping, and the damping bandwidth scope is narrow.

Disclosure of Invention

In view of the above, the utility model aims at overcoming the defects existing in the prior art, and the main purpose of the utility model is to provide a vibration reduction structure for a sound cavity of a conference loudspeaker, wherein the structural connection between the sound cavity and an outer shell adopts an air spring structure, so that the vibration energy of the sound cavity is effectively consumed, and the vibration energy of the sound cavity is greatly reduced and transmitted to the outer shell. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved, so that the defects in the prior art are overcome.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the application provides a conference loudspeaker sound cavity vibration reduction structure, which comprises a sound production unit, a shell and an air spring; the sound generating unit comprises a sound cavity shell and a loudspeaker arranged on the sound cavity shell; the inner side of the shell is provided with a mounting seat; the connecting piece is connected with the air spring and the mounting seat, and the sound cavity shell is clamped on the air spring.

Preferably, the air spring comprises an air spring body and a cover plate; an air cavity is formed in the air spring main body; the cover plate covers the air cavity; the air spring main body is provided with a clamping ring; the sound cavity shell is provided with a bayonet, and the bayonet is clamped on the clamping ring; the connecting piece compresses tightly the inner wall of the air cavity and is connected with the mounting seat.

Preferably, three mounting seats are arranged in a triangle shape, and the corresponding air springs are also arranged in three.

Preferably, a basin-shaped structure is arranged at the top of the sound cavity shell; the speaker is fixed in the basin.

Preferably, a first sound cavity is formed inside the sound cavity shell; the cavity housing is provided with a passive basin separating the interior and exterior of the cavity housing.

Preferably, the passive basin has two or four, and the passive basin is symmetrically arranged.

Preferably, the connecting piece is one of a screw, a screw and a rivet.

Preferably, the shell is provided with a sound outlet hole; the loudspeaker faces the sound outlet hole; the sound emitted from the speaker is output Kong Chuanchu.

Compared with the prior art, the conference loudspeaker sound cavity vibration reduction structure has obvious advantages and beneficial effects, and particularly, the conference loudspeaker sound cavity vibration reduction structure comprises a sound generating unit, a shell and an air spring. The air spring is connected with the sounding unit and the shell, has a better vibration reduction effect, and reduces the vibration energy of the sound cavity to be transmitted to the shell. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved. The connecting piece is connected with the air spring and the mounting seat, and the sound cavity shell is clamped on the air spring, so that the assembly is simpler and more convenient.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model.

FIG. 2 is another angular schematic view of FIG. 1 according to one embodiment of the present utility model.

FIG. 3 is an exploded view of a first embodiment of the present utility model.

FIG. 4 is another angular schematic view of FIG. 3 according to one embodiment of the present utility model.

FIG. 5 is a schematic front view of an air spring according to a first embodiment of the present utility model.

FIG. 6 is a schematic cross-sectional view A-A of FIG. 5, in accordance with a first embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. housing 11, first housing

12. Mounting seat 13 and sound outlet

14. Mounting groove 20 and sound generating unit

21. Speaker 22, sound cavity housing

23. Bayonet 24 and basin-shaped structure

25. First acoustic cavity 26, passive basin

30. Air spring 31 and air spring body

32. Clasp 33, cover plate

34. Connector 35, sealing gasket

36. An air cavity.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1

Referring to fig. 1 to 6, a specific structure of a first preferred embodiment of the present utility model is shown, which is a sound cavity vibration damping structure of a conference speaker.

The air spring 30 is arranged between the sound generating unit 20 and the shell 10 to damp vibration, so that a better damping effect is achieved, and the vibration energy of the sound cavity is reduced and transmitted to the shell. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved.

Referring to fig. 1 to 6, the vibration damping structure for a sound cavity of a conference speaker includes a sound generating unit 20, a housing 10, and an air spring 30; the sound generating unit 20 includes a sound chamber housing 22, and a speaker 21 provided in the sound chamber housing 22; the inner side of the shell 10 is provided with a mounting seat 12; the connecting piece 34 connects the air spring 30 and the mounting base 12, and the sound cavity housing 22 is clamped on the air spring 30. The air spring 30 is arranged between the sound generating unit 20 and the shell 10 to damp vibration, so that the advantage of the air spring 30 is utilized, the vibration energy of the sound cavity is reduced and transmitted to the shell, and the voice communication quality of the conference loudspeaker is improved.

The air spring 30 is characterized by its unique material and structure, and by characteristics not possessed by metal springs and rubber springs (soft rubber pads). Among other things, the air spring 30 has at least the following advantages: 1. has excellent nonlinear hard characteristic, can avoid resonance and prevent impact. The nonlinear characteristic curve of the air can be designed ideally according to actual needs, so that the nonlinear characteristic curve of the air has a lower rigidity value near rated load. 2. Active control is easily implemented because the medium of the air spring 30 is mainly air. 3. The stiffness of the air spring 30 varies with load, so the natural frequency and vibration isolation effect of the vibration isolation system remain almost unchanged at different loads.

The main effects of the sound cavity vibration reduction of the conference speaker 21 are as follows: the vibration of the local conference sound unit 20 is reduced to be conducted to the pickup microphone and the vibration energy of the sound cavities (the first sound cavity 25 and/or the second sound cavity) is eliminated by the air spring 30, thereby achieving the effect of further improving the sound quality. The sounding unit 20 is connected with the shell 10 by adopting an air spring 30 structural form, so that the self vibration energy of the sound cavity (the first sound cavity 25 and/or the second sound cavity) is effectively consumed, the self vibration energy of the sound cavity is greatly reduced and transmitted to the shell 10, the echo problem in the conversation process is solved, and the voice communication quality of the conference loudspeaker 21 is improved.

Referring to fig. 2, 3 and 6, the air spring 30 preferably includes an air spring body 31 and a cover 33; an air chamber 36 is formed inside the air spring main body 31; the cover plate 33 covers the air cavity 36; the air spring main body 31 is provided with a snap ring 32; the sound cavity shell 22 is provided with a bayonet 23, and the bayonet 23 is clamped on the clamping ring 32; the connector 34 compresses the inner wall of the air chamber 36 and connects to the mounting block 12. The connector 34 in this embodiment is preferably a screw. The air chamber 36 has air therein, and the cover 33 seals the air chamber 36. Screws enter from air cavity 36 and are tightened against mount 12. At the same time, the connecting piece 34 presses against the inner wall of the air cavity 36, and this design can seal the bottom of the air cavity 36 against air leakage. Preferably, the connecting piece 34 is provided with a sealing gasket 35 to be pressed on the inner wall of the air cavity 36, so that the sealing performance is further improved, and the stress is more uniform. The bayonet 23 is clamped on the clamping ring 32, so that the installation is more convenient, the sound cavity shell 22 is directly clamped on the air spring 30, and the assembly is more convenient.

Referring to fig. 2, preferably, there are three mounting seats 12 arranged in a triangle shape, and there are three corresponding air springs 30. The three points can determine a plane, so that the installation surface of the sound generating unit 20 can be directly determined, the production is simpler, and the stress is very uniform. In addition, the number and the positions of the mounting seats 12 may be set according to needs, and are not particularly limited.

Referring to fig. 3-4, preferably, the top of the sound cavity housing 22 is provided with a basin-like structure 24; the speaker 21 is fixed in a basin 24. The speaker 21 is fixed in the tub-like structure 24 by screws, so that the speaker 21 is very firm after assembly without loosening.

Referring to fig. 3-4, preferably, a first sound cavity 25 is formed inside the sound cavity housing 22; the cavity housing 22 is provided with a passive basin 26 separating the interior and exterior of the cavity housing 22. Preferably, the passive basin 26 has two or four passive basins 26, and the passive basins 26 are symmetrically arranged. The acoustic cavity structure of the dual passive basin 26 reduces the amplitude of resonance at low frequencies: the left-right symmetric position passive tub 26 counter-vibrating effectively counteracts the lowest resonance frequency energy of the speaker 21 in the sound emitting direction, reducing the conduction of energy within the lowest resonance frequency bandwidth of the sound cavity itself to the outer housing. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved. In addition, the number and the arrangement position of the passive basins 26 may be set as needed, and are not particularly limited. Preferably, the connecting member 34 is one of a screw, and a rivet. The connecting member 34 may be other members, and is not particularly limited.

Referring to fig. 3, preferably, the housing 10 is provided with a sound outlet 13; the speaker 21 faces the sound outlet hole 13; sound emitted from the speaker 21 is emitted from the sound emitting hole 13.

Example two

Further, the conference loudspeaker comprises the conference loudspeaker sound cavity vibration reduction structure; wherein the housing 10 comprises a first housing 11 and a second housing, and the first housing 11 is arranged on the second housing; the first shell 11 and the second shell are combined to form a second sound cavity; the sound generating unit 20 is arranged in the second sound cavity. Preferably, the sound outlet 13 is provided in the first housing 11. Of course, the sound outlet 13 may be provided in the second housing or other locations. The sound generating unit 20 is arranged in the second sound cavity. In operation, the sound of the loudspeaker 21 comes out from the sound outlet 13, and has better sound quality. Further, the acoustic cavities include a first acoustic cavity 25 and/or a second acoustic cavity.

Preferably, the first housing 11 has a prismatic table structure, and a mounting groove 14 is provided on a side surface of the prismatic table structure. The prismatic table structure may be a regular prismatic table, a quadrangular prismatic table, or the like, without specific limitation. The mounting slot 14 may be used to mount various panels, such as decorative panels, display panels, control panels, and the like.

In summary, the design of the present utility model focuses on that the air spring 30 is disposed between the sound generating unit 20 and the housing 10 to damp vibration, and the advantage of the air spring 30 is utilized to damp vibration, so that a better damping effect is obtained, and the vibration energy of the sound cavity is reduced to be transmitted to the housing. The echo problem in the conversation process is improved, and the voice communication quality of the conference loudspeaker is improved.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims

1. A conference speaker sound chamber damping structure, its characterized in that: comprises a sound generating unit, a shell and an air spring; the sound generating unit comprises a sound cavity shell and a loudspeaker arranged on the sound cavity shell; the inner side of the shell is provided with a mounting seat; the connecting piece is connected with the air spring and the mounting seat, and the sound cavity shell is clamped on the air spring.

2. A conference speaker sound cavity damping structure according to claim 1, wherein: the air spring comprises an air spring main body and a cover plate; an air cavity is formed in the air spring main body; the cover plate covers the air cavity; the air spring main body is provided with a clamping ring; the sound cavity shell is provided with a bayonet, and the bayonet is clamped on the clamping ring; the connecting piece compresses tightly the inner wall of the air cavity and is connected with the mounting seat.

3. A conference speaker sound cavity damping structure according to claim 1 or 2, characterized in that: the three mounting seats are arranged in a triangle shape, and the corresponding air springs are also arranged in three.

4. A conference speaker sound cavity damping structure according to claim 1, wherein: the top of the sound cavity shell is provided with a basin-shaped structure; the speaker is fixed in the basin.

5. A conference speaker sound cavity damping structure according to claim 1 or 4, wherein: a first sound cavity is formed in the sound cavity shell; the cavity housing is provided with a passive basin separating the interior and exterior of the cavity housing.

6. The conference speaker sound cavity damping structure according to claim 5, wherein: the number of the passive basins is two or four, and the passive basins are symmetrically arranged.

7. A conference speaker sound cavity damping structure according to claim 1, wherein: the connecting piece is one of a screw, a screw and a rivet.

8. A conference speaker sound cavity damping structure according to claim 1, wherein: the shell is provided with a sound outlet hole; the loudspeaker faces the sound outlet hole; the sound emitted from the speaker is output Kong Chuanchu.