Waterproof sound-transmitting membrane assembly and electronic equipment with waterproof sound-transmitting membrane assembly

Abstract

The invention provides a waterproof sound-transmitting membrane assembly and electronic equipment with the waterproof sound-transmitting membrane assembly, the waterproof sound-transmitting membrane assembly comprises a waterproof sound-transmitting membrane, a first support plate and an annular side part, and the first support plate is provided with a plurality of first sound-transmitting holes; the annular side part is arranged on the outer edge of the first supporting plate and forms a mounting cavity, and the waterproof sound-transmitting film is fixed in the mounting cavity through the first annular adhesive layer; a first gap for free vibration of the waterproof sound-transmitting membrane is formed between the first supporting plate and the waterproof sound-transmitting membrane; the elastic modulus of the first supporting plate is 50 to 500 MPa; the sound blocking amount of the waterproof sound transmission membrane assembly in the audio frequency range of 100-10000 Hz is not larger than 6 dB, and the sound transmission performance is excellent. The water pressure resistance of the waterproof sound transmission membrane assembly is at least 0.5 MPa; the waterproof sound-transmitting membrane assembly can resist the influence of 0.5 MPa pressure, and has waterproof and sound-transmitting effects for a long time, so that the normal application of the electronic equipment is ensured; and the waterproof sound transmission membrane is not easy to press, the membrane vibration is not affected, and the audio performance is not dispersed.

Description

technical field [0001] The invention relates to the technical field of membrane materials, in particular to a waterproof sound-permeable membrane assembly and electronic equipment with the waterproof sound-permeable membrane assembly. Background technique [0002] In recent years, electronic devices such as mobile phones, tablet PCs, gaming devices, and electronic watches have generally been equipped with sound functions. In the casing of electronic equipment with sound function, sound receiving parts such as microphones are accommodated as sound parts; openings are usually provided at positions corresponding to these sound parts in the casing of electronic equipment, through which openings are placed on the outside of the electronic equipment. Transmits sound to and from the audio department. Waterproof and sound-permeable membrane is a new type of waterproof and breathable material. It uses sound-transmitting materials to minimize the sound loss during sound transmission....

AI Technical Summary

Problems solved by technology

[0003] Existing waterproof and sound-permeable membranes generally have good waterproof and sound-permeable performance, but when subjected to greater pressure (such as 50 meters of water pressure, 0.5MPa), the waterproof and sound-permeable membrane will be stretched under pressure , the micropores are easy to become larger, so that the waterproof performance is reduced, and when the pressure remains constant, the restoring force (elasticity) is reduced, so that the acoustic performance is reduced or lost

Therefore, the service life of the existing waterproof sound-permeable membrane is relatively low, especially when it is subjected to a pressure of 0.5 MPa, its waterproof and sound-permeable performance will be greatly reduced, and then it cannot meet the needs of practical applications, which greatly limits the waterproof and sound-permeable membrane. Application Range of Membrane

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