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Ultralow-frequency double-resonance loudspeaker and manufacturing method thereof

A manufacturing method and double resonance technology, applied in the field of loudspeakers, can solve the problems of increased vibration area of ​​the loudspeaker, high minimum resonance frequency, and increased vibration quality of the vibration system, so as to increase the withstand power, increase the ampere force, and accelerate the heat dissipation. Effect

Inactive Publication Date: 2019-06-28
张志雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The minimum resonant frequency value is greatly affected by the size of the speaker (the minimum resonant frequency of the small-diameter speaker is relatively high)
[0007] 2. The acceptable power has a great influence on the size of the speaker
[0008] 3. The efficiency of converting electrical energy into sound energy is low
Only one more vibration system is added, but the two vibration systems are equivalent to two resistors in series, the vibration area of ​​the speaker increases, the compliance of the vibration system decreases, and the vibration quality of the vibration system increases
This approach will reduce the sensitivity of the speaker, increase the lowest resonance frequency, narrow the effective bandwidth, poor transient, and may cause vibration nonlinear distortion, which is a very fatal defect of the speaker

Method used

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  • Ultralow-frequency double-resonance loudspeaker and manufacturing method thereof
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  • Ultralow-frequency double-resonance loudspeaker and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2As shown, the ultra-low frequency double resonant loudspeaker includes a voice coil 12, a B elastic wave 8, a basin frame 6, an A paper cone 4, a B paper cone 9, an A elastic wave 5, a gasket 7, a bracket and a magnetic force system, and the magnetic force The system includes a magnet 2, a washer 3 and a U iron 1. The magnet is fixed in the U iron 1 symmetrically to the center of the washer, the washer 3 is fixed on the upper surface of the magnet 2, and the lower part of the voice coil 12 is wound Centrally symmetrically arranged between the SN magnetic fields of the magnetic system, the lower winding of the voice coil 12 is arranged between the outer circumferential surface of the washer 3 and the inner surface of the vertical side wall of the U iron 1, and the B elastic wave 8 The inner edge of the center is fixed on the outer surface of the voice coil 12 , and the outer edge of the B wave 8 is fixed on the upper side wall of the washer 7 . The brac...

Embodiment 2

[0039] The difference from Embodiment 1 is that: Figure 6 As shown, the magnetic force system includes a round iron, a second magnet and a second washer, the round iron is a T-shaped round iron, the second magnet is center-symmetrically placed on the T-shaped round iron, and the second washer is center-symmetric Placed on the second magnet, the lower winding of the voice coil is arranged symmetrically between the SN magnetic fields of the magnetic force system, and the lower winding of the voice coil 12 is arranged on the inner circumference of the second Washer and the T Between the round iron vertical side walls. In addition, it also includes the following differences: there is no gasket, one end of the B spring is symmetrically fixed on the voice coil, the other end of the B spring is fixed on the inner wall of the basin frame, and the inner edge of the center of the B spring is fixed on the sound coil. On the outer surface of the ring, the outer edge is fixed on the basi...

Embodiment 3

[0041] Such as figure 2 The manufacturing method of the shown ultra-low frequency double resonant loudspeaker comprises the following steps:

[0042] Step 1: Glue the magnetic system with a magnetic jig, that is, the U iron, the magnet and the washer are bonded with AB glue to form the magnetic system;

[0043] Step 1 (a): The magnetic force system is placed on the set magnetizer for magnetization;

[0044] Step 2: Use quick-drying glue to glue the bottom A paper cone and the basin frame together (using quick-drying glue is just to save production time)

[0045] Step 3: Use a jig to ensure that the magnetic system is concentric with the basin frame, and glue the magnetic system and the A paper basin together with glue;

[0046] Step 3 (a): Glue the inner edge of the center of the A bullet to the upper edge of the U-iron, and glue the outer edge to the pot frame. Apply glue to fix the outer edge of the A bomb with the basin frame, and fix the center of the A bomb with the m...

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Abstract

The invention relates to an ultralow-frequency double-resonance loudspeaker and a manufacturing method thereof. The loudspeaker comprises a voice coil, a damper B, a cone frame; a cone B and a magnetic system. The lower winding wires of the voice coil are symmetrically arranged between SN magnetic fields of the magnetic system. The inner edge of the center of the damper B is fixed on the outer surface of the voice coil, the outer edge of the center of the damper B is fixed on the cone frame, the upper end of the voice coil is fixed on the cone B in a central symmetry mode, the cone B is fixedat one end of the cone frame, the cone A is fixed at the other end of the cone frame, and the magnetic system is fixed on the cone A in a central symmetry mode. Due to the fact that the double-vibration system is adopted in the scheme, one more resonant frequency can be achieved, the mass of the magnetic system is heavy, an extremely low resonant frequency can be obtained, the low frequency can begreatly improved, and the low-frequency effect of music can be more truly restored through the sound box.

Description

technical field [0001] The invention belongs to the field of loudspeakers, in particular to a double-vibration loudspeaker and a manufacturing method thereof. Background technique [0002] The loudspeaker is also called "horn". It converts the current signal into mechanical energy when the signal current is passed through it, so as to emit an acoustic signal through vibration. Therefore, it is realized by energy conversion, so the loudspeaker refers to the electrical signal conversion. An electroacoustic transducer that generates an acoustic signal. Because the electric loudspeaker has the advantages of soft sound, high power, simple manufacturing process, and cheap price, it is widely used. What I am going to introduce now is the electric cone speaker, such as figure 1 As shown, the electric paper cone speaker consists of a vibration system (dust cap, paper cone, voice coil, elastic wave), magnetic system (U iron, magnet, washer) and auxiliary system (basin frame, termina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02H04R31/00
Inventor 张志雄
Owner 张志雄