Protective member for acoustic component and waterproof case
AssigneeNitto Denko Corporation
InventorsYuichi Abe, Akihisa Murata
Life of this patent
Estimating the term…
Abstract
A protective member for an acoustic component includes a sound-transmissive sheet composed of an elastomer. The protective member for an acoustic component may further include an adhesive layer disposed on an edge region of the sound-transmissive sheet. The sound-transmissive sheet in the protective member may have waterproofness, and may be used with a waterproof case.
Claims16
A protective member for an acoustic component, the protective member comprising a sound-transmissive sheet that consists essentially of an elastomer,
- wherein no lamination of another layer is formed on any major surface of the sound-transmissive sheet, or a lamination of another layer is formed only on an edge region of any major surface of the sound-transmissive sheet;
- and
- wherein the elastomer has a type A hardness in a range from 20 to 80 as measured according to JIS K 6253, and the sound-transmissive sheet has a thickness of 10 to 150 μm.
A waterproof case comprising:
- a protective member for an acoustic component, the protective member comprising a sound-transmissive sheet that consists essentially of an elastomer;
- and
- a case comprising:
- a frame having a sound transmitting opening and an operation opening;
- and an elastic transparent film attached to the frame so as to cover the operation opening,
- wherein the protective member is attached to the case so as to cover the sound transmitting opening, and
- no lamination of another layer is formed on any major surface of the sound-transmissive sheet, or a lamination of another layer is formed only on an edge region of any major surface of the sound-transmissive sheet layer, the elastomer has a type A hardness in a range from 20 to 80 as measured according to JIS K 6253, and the sound-transmissive sheet has a thickness of 10 to 150 μm.
A protective member for an acoustic component, the protective member comprising a sound-transmissive sheet having a thickness of 10 to 150 μm, the sound-transmissive sheet comprising elastomer, the elastomer in the sound-transmissive sheet has a type A hardness in a range from 20 to 80 as measured according to JIS K 6253 and is configured to have a waterproofness and sound-transmissiveness that are maintained without significant reduction in sound transmissivity when subjected to a test method wherein water pressure is increased to 50 kPa and maintained for 30 minutes according to JIS L 1092 B method.
Dependencies are inferred from the claim text.