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a speaker

A loudspeaker and voice coil technology, applied in the field of loudspeakers, can solve the problems of large vibration space of large-amplitude products, poor BL curve symmetry, good vibration balance, etc., to improve mechanical reliability, improve pure sound effect, and good vibration balance. Effect

Active Publication Date: 2020-02-07
SHANDONG GETTOP ACOUSTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: as attached figure 1 , 2 As shown, a loudspeaker includes a fixing system and a vibration system. The fixing system includes a frame 7 with a receiving space and a magnetic circuit system that is accommodated in the frame 7 to drive the vibration system, and the magnetic circuit system includes a magnetic cover 12 and a The magnet, the magnet includes a center magnet 10 and side magnets 11 arranged on both sides of the center magnet 10 , and a magnetic gap is formed between the center magnet 10 and the side magnets 11 . The magnetic circuit system also includes an annular pole piece 8 and a central pole piece 9 , and the central pole piece 9 is bonded to the central magnetic steel 10 . The annular pole piece 8 is in the shape of a flat plate with through holes. The frame 7 is a hollow rectangle as a whole, and the annular pole piece 8 is fixed on the frame 7 and stacked on the side magnetic steel 11 .

[0048]The vibration system includes a diaphragm 1...

Embodiment 2

[0064] Embodiment 2: This embodiment is basically the same as Embodiment 1, and its difference is:

[0065] as attached Figure 9 , 10 As shown in and 11, the number of the voice coil bobbins 3 is two. In this embodiment, each of the voice coil bobbins 3 includes a pair of long-axis sides and two R angles located at the two ends of the long-axis sides. The voice coil bobbin 3 is symmetrically arranged on a pair of long axis sides of the voice coil 4 . The voice coil bobbin 3 includes a pair of short-axis sides and two R angles located at both ends of the short-axis sides, which are similar in structure to this embodiment, and will not be described here.

[0066] The angle C between the first extension part 350 and the voice coil connection part 310 is 70°, and the angle D between the first extension part 350 and the diaphragm connection part 320 is 70°. The first extension part 350 makes the diaphragm connection part 320 and the voice coil connection part 310 have a Z axial...

Embodiment 3

[0069] Embodiment 3: as attached figure 2 As shown, a loudspeaker includes a fixing system and a vibration system. The fixing system includes a pot frame 7 with a receiving space and the magnetic circuit system that is accommodated in the pot frame 7 to drive the vibration system, and the magnetic circuit system includes a magnetic cover 12 and a The magnets inside, the magnets include a center magnet 10 and side magnets 11 arranged on both sides of the center magnet 10, the magnetic gap formed between the center magnet 10 and the side magnets 11 . The magnetic circuit system also includes an annular pole piece 8 and a central pole piece 9 , and the central pole piece 9 is bonded to the central magnetic steel 10 . The annular pole piece 8 is in the shape of a flat plate with a through hole, and the frame 7 is a hollow rectangle as a whole. The annular pole piece 8 is fixed on the frame 7 and stacked on the side magnetic steel 11 .

[0070] The vibration system includes a ...

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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,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/04H04R9/02H04R7/18H04R9/06
CPCH04R7/18H04R9/025H04R9/04H04R9/06
Inventor 刘海峰毕文达
Owner SHANDONG GETTOP ACOUSTIC
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