CN210579073U

CN210579073U - Anti-interference fidelity audio amplifier

Info

Publication number: CN210579073U
Application number: CN201922326851.6U
Authority: CN
Inventors: 游辉彬
Original assignee: Dongguan Yingli Electronic Co ltd
Current assignee: Dongguan Yingli Electronic Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-05-19
Anticipated expiration: 2029-12-20

Abstract

The utility model provides an anti-interference fidelity sound box, which comprises a sound box shell, wherein the inner wall of the sound box shell is covered with a fidelity silencing composite layer, and a loudspeaker component is arranged in the sound box shell; fidelity amortization composite bed includes the cotton layer of first amortization, and one side that the sound box shells inner wall was kept away from on the cotton layer of first amortization is equipped with the amortization cloth layer, and one side that the cotton layer of first amortization was close to sound box shells inner wall is equipped with aluminium foil layer and silica gel layer in proper order, and one side that the cotton layer of first amortization is close to the amortization cloth layer is equipped with a plurality of amortization lugs and location lug, and the cotton layer's of first amortization one end and amo. The utility model discloses can effectively reduce external magnetic field and to the inside working property of subassembly of raising one's voice of audio amplifier, multiple amortization structure can effectively carry out weakening by a wide margin or even eliminate returning the sound wave, can effectively improve the fidelity of audio amplifier, and the amortization structure all has the setting in the both sides of aluminium foil layer, can effectively avoid aluminium foil layer vibrations to form the noise.

Description

Anti-interference fidelity audio amplifier

Technical Field

The utility model relates to an audio amplifier field specifically discloses an anti-interference fidelity audio amplifier.

Background

A speaker refers to a device that can convert an audio signal into sound. The popular way is that a power amplifier is arranged in a main box body or a bass box body of the sound box, and the sound is emitted back by the sound box after the audio signal is amplified, so that the sound is increased.

The core sound producing mechanism of the sound box is a loudspeaker, which is also called a horn and is a transducer for converting an electric signal into an acoustic signal. The principle of loudspeaker is that the audio frequency electric energy passes through electromagnetism, piezoelectricity or electrostatic effect, makes paper disc or diaphragm vibration and ambient air produce resonance and sound, loudspeaker can produce the sound wave of propagating to the audio amplifier inner wall at the in-process of sound production, and the sound wave arrives the audio amplifier inner wall and rebounds and can produce the standing wave, thereby form unnecessary noise, influence the fidelity of audio amplifier, in addition, external magnetic field still can influence the sound production fidelity of loudspeaker in the audio amplifier, lead to the loudspeaker to deviate from the emergence effect of ideal.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an anti-interference fidelity sound box for solving the problems in the prior art, which can effectively reduce the working performance of the external magnetic field on the sound box internal loudspeaker component, and can effectively avoid the sound wave from rebounding on the inner wall of the sound box to form noise.

In order to solve the prior art problem, the utility model discloses an anti-interference fidelity sound box, which comprises a sound box shell, wherein the inner wall of the sound box shell is covered with a fidelity silencing composite layer, and a loudspeaker component is arranged in the sound box shell;

fidelity amortization composite bed includes the cotton layer of first amortization, one side that the sound box shells inner wall was kept away from on the cotton layer of first amortization is equipped with the amortization cloth layer, one side that the cotton layer of first amortization was close to sound box shells inner wall is equipped with aluminium foil layer and silica gel layer in proper order, one side that the cotton layer of first amortization is close to the amortization cloth layer is equipped with a plurality of amortization lugs and location lug, amortization lug protrusion is in the cotton layer of first amortization highly be H, location lug protrusion is in the cotton layer of first amortization highly be H, H is greater than or equal to H, the cotton layer's.

Furthermore, the noise reduction lug is in a frustum pyramid shape or a pyramid cone shape.

Furthermore, the sound absorption non-woven fabric layer is used as the sound absorption cloth layer.

Further, the aluminum foil layer is connected with a grounding wire.

Furthermore, one side that silica gel layer kept away from silica gel layer is equipped with the cotton layer of second amortization.

Further, the speaker assembly includes a high frequency speaker and a low frequency speaker.

The utility model has the advantages that: the utility model discloses an anti-interference fidelity audio amplifier, inner wall department at audio amplifier casing is provided with reliable magnetic screen structure, can effectively reduce external magnetic field to the inside working property of subassembly that raises one's voice of audio amplifier, ensure to raise one's voice the subassembly and can normally work, in addition, the amortization structure of audio amplifier casing inner wall department can effectively consume the sound wave, avoid the sound wave to take place to bounce-back and form the echo noise at the audio amplifier inner wall, multiple amortization structure can effectively carry out weakening by a wide margin or even eliminate to returning the sound wave, can effectively improve the fidelity of audio amplifier, and the amortization structure all has the setting in the both sides of aluminium foil layer, can effectively avoid aluminium foil layer vibrations to form the sound production effect that.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle fidelity silencing composite layer of the present invention.

The reference signs are: the sound box comprises a sound box shell 10, a fidelity sound-deadening composite layer 20, a first sound-deadening cotton layer 21, a sound-deadening bump 211, a positioning bump 212, a sound-deadening cloth layer 22, an aluminum foil layer 23, a grounding wire 231, a silica gel layer 24, a second sound-deadening cotton layer 25, a loudspeaker component 30, a high-frequency loudspeaker 31 and a low-frequency loudspeaker 32.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 and 2.

The embodiment of the utility model discloses an anti-interference fidelity sound box, which comprises a sound box shell 10, wherein the inner wall of the sound box shell 10 is covered with a fidelity silencing composite layer 20, and a loudspeaker assembly 30 is arranged in the sound box shell 10;

fidelity amortization composite bed 20 includes first amortization cotton layer 21, the amortization is cotton, also called and inhale the sound cotton, form through multiple technology processing by one or more different fibre, common amortization cotton is polyester fiber amortization cotton layer, first amortization cotton layer 21 can also be polyurethane sponge layer, one side that audio amplifier casing 10 inner wall was kept away from on first amortization cotton layer 21 is equipped with amortization cloth layer 22, one side that first amortization cotton layer 21 is close to audio amplifier casing 10 inner wall is equipped with aluminium foil layer 23 and silica gel layer 24 in proper order, silica gel layer 24 and the interior wall connection of audio amplifier casing 10, aluminium foil layer 23 has good magnetic screen function, can effectively avoid audio amplifier casing 10 external magnetic field to produce unnecessary influence to loudspeaker assembly 30, thereby effectively ensure the fidelity effect of audio amplifier sound production, aluminium foil layer 23 is connected with audio amplifier casing 10 through silica gel layer 24, silica gel has good elasticity, can effectively consume through amorti, The residual sound wave of the aluminum foil layer 23 is reached behind the first silencing cotton layer 21, thereby effectively avoiding the sound box shell 10 wall from forming noise with the sound wave resonance, one side of the first silencing cotton layer 21 close to the silencing cloth layer 22 is provided with a plurality of uniformly distributed silencing convex blocks 211 and positioning convex blocks 212, the height of the first silencing cotton layer 21 protruded by the silencing convex blocks 211 is H, the height of the first silencing cotton layer 21 protruded by the positioning convex blocks 212 is H, H is not less than H, one end of each positioning convex block 212 far away from the first silencing cotton layer 21 is fixedly connected with the silencing cloth layer 22, gaps exist between each positioning convex block 212 and the silencing cloth layer 22, the sound wave can be rebounded and consumed between the adjacent silencing convex blocks 211, and each structural layer between the fidelity silencing composite layers 20 is connected through glue bonding.

Aluminium foil layer 23 can effectively improve loudspeaker component 30's interference killing feature, amortization cloth layer 22 has good noise cancelling effect, can carry out the pre-absorption consumption to the sound wave to audio amplifier casing 10 wall, sound wave after amortization cloth layer 22 weakens transmits amortization lug 211 and first amortization cotton layer 21, the amortization lug 211 and the cotton layer 21 of first amortization of amortization material can effectively absorb the sound wave that consumes this department, part sound wave can be rebounded between adjacent amortization lug 211, thereby further improve the effect that the sound wave weakens and consumes and eliminate even, can effectively avoid the sound wave to form noise such as standing wave at the inside rebound of audio amplifier casing 10, multiple amortization structure can effectively improve the fidelity of audio amplifier.

In this embodiment, the sound-deadening protrusion 211 is in a truncated pyramid shape or a pyramid shape, and when the sound-deadening protrusion 211 is in a truncated pyramid shape, the height H of the sound-deadening protrusion 211 is equal to H, and one end of the sound-deadening protrusion 211, which is far away from the first sound-deadening cotton layer 21, is fixedly connected to the sound-deadening cloth layer 22.

In this embodiment, the sound-absorbing nonwoven fabric layer 22 is a sound-absorbing nonwoven fabric layer having a plurality of sound-absorbing holes, which can effectively attenuate the vibration of sound waves.

In the present embodiment, the aluminum foil layer 23 is connected to the ground wire 231, and the ground wire 231 penetrates through the speaker housing 10 and is connected to the ground, so that the electric charge in the aluminum foil layer 23 can be effectively released through the ground wire 231, and the influence of the electric charge accumulated in the aluminum foil layer 23 on the performance of the speaker assembly 30 is avoided.

In this embodiment, one side that silica gel layer 24 kept away from silica gel layer 24 is equipped with second amortization cotton layer 25, and preferably, second amortization cotton layer 25 is polyester fiber amortization cotton layer or polyurethane sponge layer, through adding between silica gel layer 24 and audio amplifier casing 10 and establish second amortization cotton layer 25, can further consume and produce the sound wave that reaches audio amplifier casing 10 inner wall because of the vibrations of aluminium foil layer 23, can further ensure the fidelity of audio amplifier sound production.

In the present embodiment, the speaker assembly 30 includes a high frequency speaker 31 and a low frequency speaker 32, and the speakers are also called speakers.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An anti-interference fidelity sound box is characterized by comprising a sound box shell (10), wherein a fidelity silencing composite layer (20) is covered on the inner wall of the sound box shell (10), and a loudspeaker assembly (30) is arranged in the sound box shell (10);

fidelity amortization composite bed (20) include first amortization cotton layer (21), first amortization cotton layer (21) are kept away from one side of audio amplifier casing (10) inner wall is equipped with amortization cloth layer (22), first amortization cotton layer (21) are close to one side of audio amplifier casing (10) inner wall is equipped with aluminium foil layer (23) and silica gel layer (24) in proper order, first amortization cotton layer (21) are close to one side of amortization cloth layer (22) is equipped with a plurality of amortization lugs (211) and location lug (212), amortization lug (211) protrusion in the height of first amortization cotton layer (21) is H, location lug (212) protrusion in the height of first amortization cotton layer (21) is H, and H is greater than or equal to H, location lug (212) are kept away from the one end of first amortization cotton layer (21) with amortization cloth layer (22) fixed connection.

2. The anti-tamper fidelity sound box of claim 1, wherein the sound attenuating protrusions (211) are truncated pyramid-shaped or pyramid-shaped.

3. An anti-tamper fidelity sound box as claimed in claim 1, characterized in that the sound-damping fabric layer (22) is a sound-absorbing non-woven fabric layer.

4. An anti-tamper sound box according to claim 1, wherein the aluminium foil layer (23) is connected to a ground wire (231).

5. An anti-interference fidelity sound box according to claim 1, characterized in that a second sound deadening cotton layer (25) is provided on the side of the silica gel layer (24) away from the silica gel layer (24).

6. A tamper resistant fidelity speaker as claimed in claim 1, wherein said speaker assembly (30) comprises a tweeter (31) and a woofer (32).