A super linear loudspeaker

Abstract

The invention relates to a hyper-linear loudspeaker which comprises a basin frame, a magnetic circuit system and a vibration system, the magnetic circuit system and the vibration system are arranged on the basin frame, the magnetic circuit system comprises a central magnetic part and a side magnetic part, and a magnetic gap is formed between the side magnetic part and the central magnetic part. The vibration system comprises a voice coil which sleeves the periphery of the central magnetic part and penetrates into the magnetic gap along the vertical direction, a centering support sheet which isadhered to the lower side of the voice coil through conductive glue and is supported on the basin frame, and a first vibration film of which the lower side is propped against the upper end of the voice coil; And a voice coil lead on the voice coil supports and is fixedly connected with the centering support sheet through conductive glue, and the voice coil lead is electrically connected with a circuit configured on the centering support sheet. Conductive glue comprising: 40%- 60% of UV resin, 10%-20% of acrylamides and / or acrylate monomers, and 5%-10% of cross-linking agent, and 1%- 2% of initiator, and 1%-3% of dispersing agent and 10%-20% of conductive filler and 5%-10% of ethanol. The voice coil and the centering support sheet are adhered by the conductive glue and are connected stably, so that the voice coil and the centering support sheet vibrate synchronously, and higher frequency response and lower distortion are obtained.

Description

technical field

[0001] The invention relates to the technical field of electroacoustic conversion devices, and relates to a super-linear loudspeaker. Background technique

[0002] The loudspeaker is an important acoustic component in electronic equipment, and it is a transducer device that converts electrical signals into acoustic signals. The existing loudspeaker module includes a casing, a magnetic circuit system and a vibration system arranged in the casing, and the vibration system includes a diaphragm and a voice coil arranged under the diaphragm. The voice coil drives the diaphragm to produce sound under the vibration of the magnetic circuit system.

[0003] The lead wire is generally led out from one side of the voice coil body, and the lead wire will inevitably generate traction on the voice coil and diaphragm. To achieve good characteristics (low distortion and abnormal sound) and high-quality hearing of dynamic speakers, the vibration system and the magnetic circ...

Examples

no. 3 example

[0050] Based on the third embodiment, this application provides another embodiment. In the fourth embodiment, refer to Figure 11 , the damper 22 includes a receiving groove 228 , and the voice coil lead wire 231 is led out from the voice coil 23 and then accommodated in the receiving groove 228 . The accommodating groove 228 is used to define the position of the voice coil lead wire 231 , so that it is directly supported and fixed on the damper 22 after being drawn out from the voice coil 23 . In this case, when the voice coil lead wire 231 is led from the voice coil 23 to the damper 22, there is no need to have a suspended part, accompanied by the first limit surface 226 and the second limit surface 227, the voice coil lead wire 231 and the second limit surface 227. The voice coil 23 is fixedly connected with the positioning support as a whole, and the technical problem that the lead wire 231 of the voice coil is easy to break is solved under the condition that the polarizat...

no. 5 example

[0052] The fifth embodiment of the present invention provides a conductive glue, which is applied to the bonding of the voice coil 23 , the voice coil lead wire 231 and the damper 22 in the first to the second embodiments. The conductive glue contains the following raw materials in parts by weight: 40%-60% of UV resin, 10%-20% of acrylamide and / or acrylate monomer, 5%-10% of crosslinking agent, 1%-2% of initiator %, 1%-3% of dispersant, 10%-20% of conductive filler and 5%-10% of ethanol, the cross-linking agent is selected from inorganic nanoparticles, and the conductive glue is cured by ultraviolet light.

[0053] Optionally, the acrylamide and / or acrylate monomer is selected from N-isopropylacrylamide, N-methylolacrylamide, N,N-dimethylacrylamide, methacrylamide, acrylic acid Or methacrylic acid contains any one or more mixtures of carboxyl or amides. After the acrylamide and / or acrylate monomer is polymerized, it forms an interpenetrating cross-linked network with the cure...

Embodiment 6

[0071] This embodiment provides a conductive glue, which is prepared according to the following steps:

[0072] S1. Add tris(hydroxymethyl)aminomethane to distilled water to obtain a 10mo / L buffer, add 3% hydrochloric acid to 200mL of the buffer, adjust the pH to 8.5, and then add 10g of graphene oxide , ultrasonically dispersed for 60 min, then added 2 g of dopamine hydrochloride and stirred at room temperature for 8 h to obtain a mixed solution;

[0073] S2, centrifuging the mixed solution for 30 minutes, removing unreacted monomers, and drying to obtain modified graphene oxide;

[0074] S3, graphene oxide is subjected to high temperature heat treatment, N 2 The atmosphere is protected, the heating rate is 5°C / min, and the temperature is raised to 800°C and kept for 30min to obtain graphene.

[0075] S4. Add 5 g of sodium methylene dinaphthalene sulfonate and 10 g of graphene into 40 g of UV resin, mechanically stir for 1 h, and then ultrasonically disperse for 15 min to m...

technical field

[0001] The invention relates to the technical field of electroacoustic conversion devices, and relates to a super-linear loudspeaker. Background technique

[0002] The loudspeaker is an important acoustic component in electronic equipment, and it is a transducer device that converts electrical signals into acoustic signals. The existing loudspeaker module includes a casing, a magnetic circuit system and a vibration system arranged in the casing, and the vibration system includes a diaphragm and a voice coil arranged under the diaphragm. The voice coil drives the diaphragm to produce sound under the vibration of the magnetic circuit system.

[0003] The lead wire is generally led out from one side of the voice coil body, and the lead wire will inevitably generate traction on the voice coil and diaphragm. To achieve good characteristics (low distortion and abnormal sound) and high-quality hearing of dynamic speakers, the vibration system and the magnetic circ...

Examples

no. 3 example

[0050] Based on the third embodiment, this application provides another embodiment. In the fourth embodiment, refer to Figure 11 , the damper 22 includes a receiving groove 228 , and the voice coil lead wire 231 is led out from the voice coil 23 and then accommodated in the receiving groove 228 . The accommodating groove 228 is used to define the position of the voice coil lead wire 231 , so that it is directly supported and fixed on the damper 22 after being drawn out from the voice coil 23 . In this case, when the voice coil lead wire 231 is led from the voice coil 23 to the damper 22, there is no need to have a suspended part, accompanied by the first limit surface 226 and the second limit surface 227, the voice coil lead wire 231 and the second limit surface 227. The voice coil 23 is fixedly connected with the positioning support as a whole, and the technical problem that the lead wire 231 of the voice coil is easy to break is solved under the condition that the polarizat...

no. 5 example

[0052] The fifth embodiment of the present invention provides a conductive glue, which is applied to the bonding of the voice coil 23 , the voice coil lead wire 231 and the damper 22 in the first to the second embodiments. The conductive glue contains the following raw materials in parts by weight: 40%-60% of UV resin, 10%-20% of acrylamide and / or acrylate monomer, 5%-10% of crosslinking agent, 1%-2% of initiator %, 1%-3% of dispersant, 10%-20% of conductive filler and 5%-10% of ethanol, the cross-linking agent is selected from inorganic nanoparticles, and the conductive glue is cured by ultraviolet light.

[0053] Optionally, the acrylamide and / or acrylate monomer is selected from N-isopropylacrylamide, N-methylolacrylamide, N,N-dimethylacrylamide, methacrylamide, acrylic acid Or methacrylic acid contains any one or more mixtures of carboxyl or amides. After the acrylamide and / or acrylate monomer is polymerized, it forms an interpenetrating cross-linked network with the cure...

Embodiment 6

[0071] This embodiment provides a conductive glue, which is prepared according to the following steps:

[0072] S1. Add tris(hydroxymethyl)aminomethane to distilled water to obtain a 10mo / L buffer, add 3% hydrochloric acid to 200mL of the buffer, adjust the pH to 8.5, and then add 10g of graphene oxide , ultrasonically dispersed for 60 min, then added 2 g of dopamine hydrochloride and stirred at room temperature for 8 h to obtain a mixed solution;

[0073] S2, centrifuging the mixed solution for 30 minutes, removing unreacted monomers, and drying to obtain modified graphene oxide;

[0074] S3, graphene oxide is subjected to high temperature heat treatment, N 2 The atmosphere is protected, the heating rate is 5°C / min, and the temperature is raised to 800°C and kept for 30min to obtain graphene.

[0075] S4. Add 5 g of sodium methylene dinaphthalene sulfonate and 10 g of graphene into 40 g of UV resin, mechanically stir for 1 h, and then ultrasonically disperse for 15 min to m...

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