a speaker

Abstract

The invention discloses a loudspeaker. The loudspeaker includes a vibration system, the vibration system comprises a vibrating diaphragm and a voice coil assembly. The voice coil assembly comprises avoice coil and a voice coil framework, the voice coil framework comprises a vibrating diaphragm connecting part, a voice coil connecting part and a first extension part, one end of the first extensionpart is connected with the vibrating diaphragm connecting part, the other end of the first extension part is connected with the voice coil connecting part, and the first extension part enables the voice coil to have a height far away from the Z-axis direction of the vibrating diaphragm. The dome radiation area SD is large, and the sensitivity is high; the special voice coil framework structure enables a magnetic loop formed when the voice coil is located in the magnetic gap to be shortened, the voice coil is concentrated in the area with the densest magnetic field, the maximum BL value can beobtained, the symmetry degree of a BL curve is good, the loudness of a product is improved, and distortion of the product is reduced. The globe roof is not easy to break due to the globe roof reinforcing part, so that the mechanical reliability of the product is improved; the voice coil framework and the FPC assembly maintain the voice coil to only move in the Z direction, the vibration balance is good, and the pure tone effect of the loudspeaker is improved.

Description

technical field [0001] The invention relates to the technical field of electroacoustics, in particular to a loudspeaker. Background technique [0002] At present, micro-speakers are all diaphragms, ball tops, voice coils, and injection molded basin frames that are glued together to realize the Z-direction positioning of the voice coil and the adjustment of the vibration space of the product. [0003] The design scheme of the above-mentioned loudspeaker is difficult to meet the current market demand for loudspeaker with large amplitude, high loudness, low distortion, and good vibration balance, and its disadvantages are mainly manifested in the following aspects. [0004] 1. When the height of the product is small, it is difficult to increase the amplitude of the product to the extreme (for example, the height of the product is 2.5mm, and the amplitude is designed to be 0.65mm); [0005] 2. Large-amplitude products require a large vibration space to avoid product collisions,...

AI Technical Summary

Problems solved by technology

[0003] The design of the above-mentioned loudspeaker is difficult to meet the current market demand for loudspeaker with large amplitude, high loudness, low distortion, and good vibration balance. Its disadvantages are mainly manifested in the following aspects

[0004] 1. When the height of the product is small, it is difficult to increase the amplitude of the product to the extreme (for example, the height of the product is 2.5mm, and the amplitude is designed to be 0.65mm);

[0005] 2. Large-amplitude products require a large vibration space to avoid product collisions, which makes it difficult for the voice coil to concentrate in the most densely magnetic field area, failing to obtain the maximum BL value, and resulting in insufficient loudness of the product;

[0006] 3. Large-amplitude products require a large vibration space to avoid product collisions, which makes it difficult to set the voice coil symmetrically relative to the center pole piece, and the symmetry of the BL curve is poor, resulting in high product distortion

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