Noise reduction structure for loudspeaker voice coil

Abstract

The utility model discloses a noise reduction structure for a loudspeaker voice coil, which comprises a voice coil body, a magnetic conductive layer arranged on the outer side of the voice coil body, a second vibration reduction layer arranged on the outer side of the voice coil body and located on the outer side of the magnetic conductive layer, and a protective layer arranged on the outer side of the voice coil body and located on the outer side of the second vibration reduction layer. A first vibration reduction layer is arranged in the voice coil body, a sound insulation plate is arranged on one side of the voice coil body, and the second vibration reduction layer and the first vibration reduction layer are used for reducing the resonance effect of the voice coil body. The utility model aims to solve the problems that the resonance effect can be generated when the voice coil of the loudspeaker vibrates, so that the phenomena of sound distortion and sound quality reduction caused by vibration occur, sound aliasing of different frequencies can be caused, and the definition and the accuracy of audio signals are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker voice coils, in particular to a noise reduction structure for a loudspeaker voice coil. Background Art

[0002] The speaker voice coil is a crucial component in a loudspeaker, converting electrical current into sound vibrations. The following is a technical background on speaker voice coils: Principle: Speaker voice coils operate based on Faraday's principle of electromagnetic induction. When current is passed through the voice coil, a magnetic field is generated. This interacts with the magnetic field of the permanent magnet, causing the voice coil to vibrate and produce sound. Structure: A speaker voice coil is typically made of copper wire wound into a circular ring. The voice coil is connected to the diaphragm, and as it moves in the magnetic field, it vibrates, producing sound.

[0003] The resonance effect produced by the speaker voice coil when vibrating causes the sound produced by the vibration to be distorted and the sound quality to be reduced. It also causes the mixing of sounds of different frequencies, affecting the clarity and accuracy of the audio signal. Utility Model Content

[0004] The purpose of the present invention is to provide a noise reduction structure for a loudspeaker voice coil, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: comprising a voice coil body, a magnetic conductive layer provided on the outside of the voice coil body, a second vibration-damping layer provided on the outside of the voice coil body and outside the magnetic conductive layer, a protective layer provided on the outside of the voice coil body and outside the second vibration-damping layer, a first vibration-damping layer provided inside the voice coil body, a sound insulation board provided on one side of the voice coil body, and the second vibration-damping layer and the first vibration-damping layer being used to reduce the resonance effect of the voice coil body.

[0006] As a further preferred embodiment of the present technical solution, the first vibration-damping layer is made of polyester fiber and filled inside the voice coil body.

[0007] As a further preferred embodiment of the present technical solution, the magnetic conductive layer is made of soft iron and covers the outer side of the voice coil body.

[0008] As a further preferred embodiment of the present technical solution, the second vibration damping layer is made of a polyester film that covers the outside of the voice coil body and is located outside the magnetic conductive layer.

[0009] As a further preferred embodiment of the present technical solution, the protective layer is made of a polyvinyl chloride film that covers the outside of the voice coil body and is located outside the second vibration damping layer.

[0010] As a further preferred embodiment of the present technical solution, the sound insulation board is made of corrugated aluminum plate.

[0011] As a further preferred embodiment of the present technical solution, the sound insulation board is arranged on the back side of the voice coil body.

[0012] The utility model provides a noise reduction structure for a loudspeaker voice coil, which has the following beneficial effects:

[0013] (1) The present invention can effectively reduce the resonance effect generated by the vibration of the voice coil body by cooperating with the first vibration-damping layer and the second vibration-damping layer, thereby avoiding the distortion of the sound generated by the vibration and the reduction of the sound quality, and causing the aliasing of sounds of different frequencies, affecting the clarity and accuracy of the audio signal. Then, in combination with the sound insulation board, it can block unnecessary sound waves from the rear of the voice coil, reduce echo and resonance, improve sound quality, and thus increase the practicality of the voice coil body.

[0014] (2) The utility model can concentrate the magnetic lines of force through the magnetic conductive layer, increase the strength and uniformity of the magnetic field, improve the driving force and sensitivity of the voice coil, and then cooperate with the protective layer to protect the voice coil from dust, moisture and collision, thereby extending the service life of the voice coil body and further increasing the practicality of the voice coil body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the sound insulation board of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first vibration damping layer of the present invention;

[0019] In the figure: 1. Voice coil body; 2. First vibration damping layer; 3. Sound insulation board; 4. Protective layer; 5. Second vibration damping layer; 6. Magnetic conductive layer; 7. Polyvinyl chloride film; 8. Polyester film; 9. Soft iron; 10. Corrugated aluminum plate; 11. Polyester fiber. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figures 1-4As shown, in this embodiment, a noise reduction structure for a loudspeaker voice coil includes a voice coil body 1, a magnetic conductive layer 6 is provided on the outside of the voice coil body 1, a second vibration damping layer 5 is provided on the outside of the voice coil body 1 and outside the magnetic conductive layer 6, a protective layer 4 is provided on the outside of the voice coil body 1 and outside the second vibration damping layer 5, a first vibration damping layer 2 is provided inside the voice coil body 1, a sound insulation board 3 is provided on one side of the voice coil body 1, the second vibration damping layer 5 and the first vibration damping layer 2 are used to reduce the resonance effect of the voice coil body 1, and the sound insulation board 3 is provided on the back side of the voice coil body 1.

[0022] First, by cooperating with the first vibration-damping layer 2 and the second vibration-damping layer 5, the resonance effect generated by the voice coil body 1 during vibration can be effectively reduced, thereby avoiding the distortion of the sound generated by the vibration and the reduction of the sound quality, and causing the aliasing of sounds of different frequencies, affecting the clarity and accuracy of the audio signal. Then, in conjunction with the sound insulation board 3, unnecessary sound waves from the rear of the voice coil can be blocked, echo and resonance can be reduced, and the sound quality can be improved, thereby increasing the practicality of the voice coil body 1. Then, the magnetic conductive layer 6 can concentrate the magnetic lines of force, increase the strength and uniformity of the magnetic field, and improve the driving force and sensitivity of the voice coil. Then, in conjunction with the protective layer 4, the voice coil can be protected from the influence of dust, water vapor and collision, thereby extending the service life of the voice coil body 1, thereby further increasing the practicality of the voice coil body 1.

[0023] like Figures 1-4 As shown, the first vibration damping layer 2 is made of polyester fiber 11 and filled in the interior of the voice coil body 1 , and the second vibration damping layer 5 is made of polyester film 8 and covers the outside of the voice coil body 1 and is located outside the magnetic conductive layer 6 .

[0024] Using polyester film 8 as a sound insulation membrane can reduce the resonance effect caused by the vibration of the voice coil body 1, reduce distortion, and improve sound quality. The polyester film 8 absorbs vibration energy, reducing the resonance caused by the vibration of the voice coil body 1, thereby improving sound clarity and accuracy. Furthermore, using sound insulation pads made of materials such as polyester fiber 11 can isolate heat and vibration between the voice coil body 1 and other components, preventing the propagation of resonance and improving the overall acoustic properties. The sound insulation pads can reduce mutual interference and resonance between different components, thereby improving the operating stability and sound quality of audio equipment.

[0025] like Figures 1-4 As shown, the magnetic conductive layer 6 is made of soft iron 9 and covers the outside of the voice coil body 1. The protective layer 4 is made of polyvinyl chloride film 7 and covers the outside of the voice coil body 1 and is located outside the second vibration damping layer 5. The sound insulation board 3 is made of corrugated aluminum plate 10.

[0026] By using soft iron 9 as the magnetic conductive layer 6, the magnetic lines of force can be concentrated, the strength and uniformity of the magnetic field can be increased, the driving force and sensitivity of the voice coil body 1 can be improved, and the sound quality performance of the audio equipment can be improved. Then, a corrugated aluminum plate 10 is used as a sound insulation board 3 to block unnecessary sound waves from the rear of the voice coil body 1, reduce echo and resonance, and thus improve the sound quality. The sound insulation board 3 helps to eliminate sound distortion caused by interference and reflection, making the sound purer and more balanced. Finally, the polyvinyl chloride film 7 has good scratch and tear resistance, and the color and thickness can be customized as needed. It can play a protective and insulating role on the outside of the voice coil body 1, and also helps to improve the overall acoustic performance.

[0027] This utility model provides a noise reduction structure for a loudspeaker voice coil. Its specific operating principle is as follows: First, by using a polyester film 8 as a sound insulation membrane, the resonance effect caused by the vibration of the voice coil body 1 is reduced, reducing distortion and improving sound quality. The polyester film 8 absorbs vibration energy, reducing the resonance caused by the vibration of the voice coil body 1, thereby improving the clarity and accuracy of the sound. Then, a sound insulation foam made of materials such as polyester fiber 11 isolates heat and vibration between the voice coil body 1 and other components, preventing the propagation of resonance and improving the overall acoustic properties. Sound insulation cotton can reduce mutual interference and resonance between different components, improve the working stability and sound quality performance of audio equipment, and then, by using soft iron 9 as the magnetic conductive layer 6, the magnetic lines of force can be concentrated, the strength and uniformity of the magnetic field can be increased, the driving force and sensitivity of the voice coil body 1 can be improved, and the sound quality performance of the audio equipment can be improved. Then, corrugated aluminum plate 10 is used as the sound insulation board 3, which can block unnecessary sound waves coming from the rear of the voice coil body 1, reduce echo and resonance, and thus improve the sound quality. The sound insulation board 3 helps to eliminate sound distortion caused by interference and reflection, making the sound purer and more balanced. Finally, the polyvinyl chloride film 7 has good scratch and tear resistance, and the color and thickness can be customized according to needs. It can play a protective and insulating role on the outside of the voice coil body 1, and also help to improve the overall acoustic performance.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction structure for a loudspeaker voice coil, comprising a voice coil body (1), characterized in that: A magnetic conductive layer (6) is arranged on the outside of the voice coil body (1), a second vibration reduction layer (5) is arranged on the outside of the voice coil body (1) and on the outside of the magnetic conductive layer (6), a protective layer (4) is arranged on the outside of the voice coil body (1) and on the outside of the second vibration reduction layer (5), a first vibration reduction layer (2) is arranged inside the voice coil body (1), a sound insulation board (3) is arranged on one side of the voice coil body (1), and the second vibration reduction layer (5) and the first vibration reduction layer (2) are used to reduce the resonance effect of the voice coil body (1).

2. The noise reduction structure for a loudspeaker voice coil according to claim 1, characterized in that: The first vibration-damping layer (2) is made of polyester fiber (11) filled inside the voice coil body (1).

3. The noise reduction structure for a loudspeaker voice coil according to claim 1, characterized in that: The magnetic conductive layer (6) is made of soft iron (9) and covers the outer side of the voice coil body (1).

4. The noise reduction structure for a loudspeaker voice coil according to claim 3, characterized in that: The second vibration-damping layer (5) is made of a polyester film (8) which covers the outer side of the voice coil body (1) and is located on the outer side of the magnetic conductive layer (6).

5. The noise reduction structure for a loudspeaker voice coil according to claim 4, characterized in that: The protective layer (4) is made of a polyvinyl chloride film (7) which covers the outer side of the voice coil body (1) and is located on the outer side of the second vibration reduction layer (5).

6. The noise reduction structure for a loudspeaker voice coil according to claim 1, characterized in that: The sound insulation board (3) is made of a corrugated aluminum plate (10).

7. The noise reduction structure for a loudspeaker voice coil according to claim 6, characterized in that: The sound insulation board (3) is arranged on the back side of the voice coil body (1).

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