Sectionally coated spring plate and electric acoustic device using same

Abstract

The invention relates to a spring plate which comprises a bonding pad end. The bonding pad end extends to form a bending portion, the bending portion is connected with a spring plate arm, the spring plate arm extends to form an arc end, the arc end can be connected with an external circuit, at least the surface material of the arc end is different from the surface material of other portions of the spring plate, the spring plate is convenient in spot welding and cost is saved. The invention further relates to an electric acoustic device using the spring plate. The electric acoustic device mainly comprises a support, a magnetic cup and the spring plate. At least a notch is arranged at the edge of the magnetic cup, the magnetic cup is mounted in the support, at least one air hole is formed at the notch of the magnetic cup and the bottom of the support, the size of a magnetic circuit system is expanded to the uttermost extent in limited space, and sensitivity of products is improved.

Description

technical field [0001] The invention relates to an electroacoustic device, in particular to a section-coated shrapnel and an electroacoustic device using the shrapnel. Background technique [0002] At present, mobile phones are making great strides in the direction of lightweight and ultra-thin development, and their supporting electronic components must also be reduced in size so as to save more space for mobile phones. However, when the size of electroacoustic devices in mobile phones shrinks, its volume and sound effects will inevitably be affected. How to realize the light weight and ultrathinness of the mobile phone under the premise of ensuring the voice performance of the mobile phone has become a problem to be solved in this field. Traditional electro-acoustic devices mainly include brackets with shrapnel, magnetic cups to accommodate the magnetic circuit system, and voice coils extending with lead wires. The pad end of the elastic piece, so as to realize the elect...

AI Technical Summary

Problems solved by technology

In order to meet the requirement of small size, the electro-acoustic device and the pad end of the shrapnel are arranged inside the bracket, and the lead-out line of the voice coil can only be connected with the pad end of the shrapnel by machine spot welding. The known shrapnel is not connected to the surface Material improvements

Moreover, the electro-acoustic device must reduce the damping to ensure its sound quality. The most effective way to reduce the damping is to open air holes on the electro-acoustic device. The known air holes have not improved their location and shape.

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