Waterproof sound transmitting member

Abstract

A waterproof sound transmitting member according to the present invention includes: a waterproof sound transmitting membrane having a first surface and a second surface opposite to the first surface; and a first adhesive sheet and a second adhesive sheet that are disposed on the first surface. When viewed in a direction perpendicular to the first surface, the first adhesive sheet has a closed frame shape, and the second adhesive sheet is disposed within the frame formed by the first adhesive sheet and is spaced from the first adhesive sheet. This waterproof sound transmitting member has a structure suitable for preventing deterioration in sound quality due to sagging of the waterproof sound transmitting membrane.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a waterproof sound transmitting member suitable for providing waterproof function to electronic devices equipped with acoustic components such as microphones and speakers, and in particular, to a waterproof sound transmitting member including a waterproof sound transmitting membrane.[0003]2. Description of Related Art[0004]Portable electronic devices, such as cellular phones, cordless phones, smartphones, notebook computers, tablet computers, electronic notebooks, digital cameras, and portable game machines, are required to be waterproof because the devices are often used outdoors. In these electronic devices, acoustic components, specifically, transducers serving as sound transmitters or sound receivers, such as speakers, microphones, and buzzers, need to transmit sound to the outside of the devices and to receive sound from the outside thereof. Therefore, various studies have been cond...

AI Technical Summary

Benefits of technology

[0007]In view of the above, it is an object of the present invention to provide a waterproof sound transmitting member having a structure suitable for preventing deterioration in sound quality due to sagging of the waterproof sound transmitting membrane.

[0009]In the waterproof sound transmitting member of the present invention, the waterproof sound transmitting membrane and the first adhesive sheet block the passage of water through the opening to be protected from water. The second adhesive sheet also is disposed on the waterproof sound transmitting membrane so that the first and second adhesive sheets are placed on the same surface. The second adhesive sheet allows to ensure good sound transmission while preventing sagging of the waterproof sound transmitting membrane.

Problems solved by technology

Therefore, the waterproof sound transmitting membrane sagging under its own weight may come into contact with the transducer and other components around the transducer, resulting in distortion of sound.

Since electronic devices have recently become smaller and lighter, the risk that sagging of a waterproof sound transmitting membrane may cause deterioration in sound quality has increased.

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