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a speaker

A loudspeaker and circuit technology, applied in the field of loudspeakers, can solve the problems of increasing inductance components, increasing the cost of circuit parts and process costs, reducing the effective space of the loudspeaker, etc., and achieving the effects of simple processing technology, improved loudspeaker quality, and low product cost.

Active Publication Date: 2018-08-17
SHENZHEN SUNWAY COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to increase the inductance element, and weld the inductance into the circuit through a welding process, which increases the component cost and process cost of the circuit, and reduces the effective space of the speaker (Speaker) sound cavity.

Method used

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Effect test

Embodiment 1

[0022] see figure 2 , in this embodiment, the lines include a first line 51 and a second line 52, one end of the first line 51 is connected to an input end of the speaker, and the other end of the first line 51 is connected to the audio coil 2, one end of the second line 52 is connected to the other input end of the speaker, and the other end of the second line 52 is connected to the other end of the audio coil 2. That is, the lines are respectively connected in series at the two ends of the audio coil 2, therefore, the high-frequency signal can be blocked from entering the audio coil 2 from both ends of the audio coil 2, preventing the high-frequency signal from entering the audio coil 2 from any end of the audio coil 2, Moreover, connecting two lines in series in the speaker also improves the high-frequency choke effect of the casing circuit 5 .

[0023] see figure 2 , in this embodiment, in order to further block the high-frequency signal from entering the audio coil 2,...

Embodiment 2

[0029] In the above embodiments, the substrate is a PCB circuit board or a plastic board, and the first circuit 51 , the second circuit 52 , the first wire 53 and the second wire 54 are disposed on the substrate through a surface metallization process. In order to further increase the effective space in the sound cavity of the speaker, in this embodiment, the substrate is the housing 4, that is, the first line 51, the second line 52, the first wire 53 and the second wire 54 pass through the surface The metallization process is arranged on the casing 4 . Soldering pads are set on the housing 4, and the lines on the housing 4 are connected to the audio coil 2 and the input end of the loudspeaker through wires, that is, the first line 51 and the second line 52 are respectively connected in series to the input end of the loudspeaker through wires and audio coil 2. Therefore, in this embodiment, the housing 4 is used as the substrate of the first line 51, the second line 52, the f...

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Abstract

The present invention discloses a loudspeaker. The loudspeaker comprises a diaphragm, a voice frequency coil, a magnet and a shell circuit, and the diaphragm, the voice frequency coil, the magnet and the shell circuit are arranged in a shell of the loudspeaker. The shell circuit comprises a substrate and lines arranged on the substrate, the routing mode of the lines on the substrate is that a plurality of U-shaped lines are in end-to-end connection orderly, and the shell circuit is in series connection between the input end of the loudspeaker and the voice frequency coil. The loudspeaker does not need to use inductor elements, and does not generate an interference electromagnetic wave.

Description

technical field [0001] The invention relates to a loudspeaker. Background technique [0002] With the development of wireless communication technology and mobile terminals, the peripherals and interiors of mobile phones are becoming more and more complex. The increase of mobile phone functions and the increase of multi-frequency antennas make the electromagnetic environment in mobile phones worse and difficult to measure accurately. The development process presents many difficulties, and the above reasons often lead to wide variations in antenna efficiency and variable quality. Audio devices such as speakers are an important source of interference for the deterioration of the electromagnetic environment near the mobile phone antenna. [0003] In view of the above problems, the main measures taken in the prior art include: reducing the area used by the antenna; or avoiding the interference source area such as the speaker (speaker) as far as possible; or providing the body pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06
Inventor 吴会林周仲蓉毕晔海陈干戴辉华
Owner SHENZHEN SUNWAY COMM