An earphone membrane with gradient rigidity and its manufacturing method

Abstract

An earphone membrane with gradual rigidity, the membrane body is made of a polymer compound material as a base material, the earphone membrane is circular, and the earphone membrane includes an outer ring part, a gradient part and a central part which are sequentially connected in a ring , taking the stiffness of the membrane substrate as the reference stiffness, the rigidity of the gradient part gradually transitions from the outside to the inside from the reference stiffness to the lowest stiffness and then to the reference stiffness, the rigidity of the outer ring part and the center part and the rigidity of the material substrate unanimous. The manufacturing method of the earphone membrane includes: fixing the earphone membrane with an annular fixing ring, using a medium to move toward the earphone membrane under the drive of a driving component, so that excessive deformation occurs in the ring-shaped part in the middle of the earphone membrane. The invention improves the method of processing the earphone membrane of the earphone membrane, and obtains a membrane body with gradual stiffness, so that the unit of the earphone has a wider frequency response range, and at the same time, it can have better instantaneous dynamics and clear pronunciation, which is beneficial to The improvement of sound quality has the advantages of saving production cost and obtaining high-quality pronunciation units.

Description

Technical field: [0001] The invention belongs to the diaphragm manufacturing technology in the field of earphone manufacturing, and specifically relates to an earphone diaphragm with gradually changing rigidity and a manufacturing method thereof. Background technique: [0002] The pronunciation units used in the existing earphones are divided into moving coil, moving iron and electrostatic types. The most commonly used one is the moving coil unit, and most of the diaphragm accessories contained in the moving coil unit are made of a single material, while the single material The diaphragm has only one rigidity, and the frequency response range of each rigidity is fixed, and it is impossible to achieve broadband pronunciation. In order to obtain more frequency response range, a composite diaphragm containing various materials appears or is set on the diaphragm body. Concave-convex texture, the composite diaphragm is covered with a second material at the local position of the b...

AI Technical Summary

Problems solved by technology

[0002] The pronunciation units used in the existing earphones are divided into moving coil, moving iron and electrostatic types. The most commonly used one is the moving coil unit, and most of the diaphragm accessories contained in the moving coil unit are made of a single material, while the single material The diaphragm has only one rigidity, and the frequency response range of each rigidity is fixed, and it is impossible to achieve broadband pronunciation. In order to obtain more frequency response range, a composite diaphragm containing various materials appears or is set on the diaphragm body. Concave-convex texture, the composite diaphragm is covered with a second material at the local position of the basic diaphragm, such as the middle or the outer ring, in order to achieve the purpose of changing the frequency response range of the diaphragm, but the composite diaphragm has higher manufacturing costs , the diaphragm contains a multi-layer film body, resulting in a high weight, it is difficult to obtain a high response speed, and the setting of concave and convex lines will make the vibrating air flow of the film body unstable and turbulent, affecting the sound quality, and the coil on the film body After being pushed by the magnetic force, the reset also depends on the rigidity of the material itself. The better the rigidity of the material, the faster the rebound speed and the better the clarity of the sound. In order to obtain better rigidity, it is usually necessary to increase the The thickness of the membrane body, another factor that determines the sound The weight of the membrane body, in order to make the diaphragm easier to be pushed by the coil, the lighter the quality of the membrane body, the better, which requires coordination and adjustment of the stiffness and thickness of the membrane body to coordinate , but using composite materials to manufacture high-end units, the debugging process will be very complicated and the manufacturing cost will be high

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