Japan Gore-tex Inc.

W.l. Gore & Associates, Co., Ltd.

Nobuyuki Osugi

Ryosuke Nakamura

Ryan Kenaley

Takuya Ueki

Takayuki Saeki

Takafumi Namba

Yasuhiro Kurihara

The waterproof sound-transmissive cover is characterized by providing a frequency response curve with a difference between a maximum sound pressure level and a minimum sound pressure level of 13.0 dB or less in the range of frequencies from 3 kHz to 8 kHz, and an insertion loss at 1 kHz of less than 14.0 dB, and said cover comprising: a porous film having (1) a water pressure resistance measured according to JIS L1092 water penetration test method B (high pressure method) of 20 kPa or more, and air permeability measured according to JIS L1096 method A (Frazier type method) of 3.0 cc/cm&#xb7;sec or more, and (2) a tensile strength measured according to ASTM standards D412 of 5.5N or more.

Waterproof sound-transmissive cover, waterproof sound-transmissive cover member and acoustic device

An object is to provide a structure in which when a waterproof filter having an adhesive layerattached thereto is attached to a housing of an electronic device, the adhesive layerhardly rides onto a stepped portion. An acoustic part includes a housinghaving at least one sound hole, an adhesive layerformed into a frame shape, and a waterproof filter attached so as to cove the sound holewith the adhesive layerinterposed therebetween, wherein the housingis provided with a step positionfor allowing the waterproof filter to engage therewith or a stepped portionas a marker showing an attachment position of the waterproof filter, and an outer peripheral portion of the frame-shaped adhesive layeris positioned at an inner side than an outer peripheral portion of the waterproof filter.

Acoustic part and method for manufacturing the same

Growing community of inventors

Tokyo, Japan

Nobuyuki Osugi