US 10,484,789 B2 · Micro-speaker having an air adsorbent

Abstract

The present invention relates to a micro-speaker for use in a small electronic device, and more particularly, to a micro-speaker having an enclosure applied thereto and having an air adsorbent which can improve the low frequency sound quality. According to the present invention, it is possible to provide a micro-speaker which shows excellent improvement in the low frequency characteristics, regardless of a mass ratio of silicon to aluminum of an air adsorbent, and also possible to provide a micro-speaker which shows excellent improvement in the low frequency characteristics at a low cost, by reducing a mass ratio of silicon to aluminum, as compared with the conventional micro-speaker having an air adsorbent.

Claims7

Dependent claims

A micro-speaker, comprising:

an enclosure;
a speaker unit accommodated in the enclosure;
a resonance space defined between the enclosure and the speaker unit;
and
an air adsorbent provided in the resonance space,
wherein the air adsorbent is zeolite having at least 40% of channels with a size of 0.4 nm to 0.6 nm,
wherein the zeolite is provided in the form of granules with a grain size of 0.2 mm to 0.5 mm.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/392,443Filed 28 Dec 2016

Priority

KR 10-2015-018853329 Dec 2015

Published

US 2017/0188137 A129 Jun 2017

Granted

19 Nov 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04R 1/288
By means of damping material, e.g. as cladding: for loudspeaker transducers
B01J 20/18
Alumino-silicates: synthetic zeolitic molecular sieves
B01J 20/28004
Characterised by their physical properties: sorbent size or size distribution, e.g. particle size
B01J 20/28061
Surface area, e.g. B.E.T specific surface area: being in the range 100-500 m2/g

Micro-speaker having an air adsorbent

Life of this patent

Micro-speaker having an air adsorbent

Life of this patent

Abstract

Claims7