KR960033163A

KR960033163A - Dustproof device of coaxial dynamic speaker and its manufacturing method

Info

Publication number: KR960033163A
Application number: KR1019950003271A
Authority: KR
Inventors: 윤홍섭
Original assignee: 김충지; Lg 포스타 주식회사
Priority date: 1995-02-20
Filing date: 1995-02-20
Publication date: 1996-09-17

Abstract

본 발명은 동축상에 트위터와 우퍼가 설치된 동축형 다이나믹 스피커에서, 트위터 외경과 음성 코일 사이의 틈새를 그 진동에는 영향을 주지않고 폐쇄하여 음성 코일과 트위터 지지부 사이로 먼지 등의 이물질이 들어가지 않도록 해주는 방진 장치에 관한 것이다. 종래의 방진 구조물로서, 서브 댐퍼를 사용한 경우에는, 트위터 구조물과 간섭될 우려가 있고, 이러한 경우 진동판의 진동시에 이상음이 나게되어 음질이 떨어지며, 서브 펠트캡을 사용한 경우에는, 방진 효과가 불충분하게 되고, 서브 펠트캡의 외경부와 우퍼 진동판 사면사이의 접착시에 지지부와의 편심이 발생하게 되면 서브펠트캡의 내경부와 지지부가 간섭을 일으켜서 진동판의 진동시에 마찰음이 발생하게 되는 문제점이 있다. 본 발명은 동축형 스피커의 우퍼 진동판과 트위터 구조물 사이에 설치하는 방진 구조물(16)을 고배율로 발포한 스폰지(15)를 박형으로 동심 타발하여 제작하고, 이 스폰지의 내경부 및 외경부에 치수의 변화가 없는 링(Ring)(13)(14)을 부착한 구조로 방진 장치를 구성함으로써, 고 탄성재의 방지 구조물 채용으로 주변 구조물과의 간섭이나 진동 방해 등을 유발하지 않으면서 먼지 등의 이물질 유입을 방지해 줄 수 있도록 한 동축형 다이나믹 스피커의 방진 장치를 제공한다.In the present invention, in the coaxial dynamic speaker in which a tweeter and a woofer are installed on a coaxial shaft, the gap between the outer diameter of the tweeter and the voice coil is closed without affecting the vibration to prevent foreign substances such as dust from entering the voice coil and the tweeter support. It relates to a dustproof device. As a conventional dustproof structure, when a sub-damper is used, it may interfere with the tweeter structure. In this case, abnormal sound is generated during vibration of the diaphragm, resulting in poor sound quality. When a sub felt cap is used, the dust-proofing effect is insufficient. When the eccentricity of the support portion is generated during the adhesion between the outer diameter portion of the sub felt cap and the woofer diaphragm slope, the inner diameter portion of the sub felt cap and the support portion interfere with each other, and friction noise is generated when the vibration plate vibrates. The present invention is produced by thinly concentrically punching a sponge 15 foamed with high magnification of a dustproof structure 16 installed between a woofer diaphragm and a tweeter structure of a coaxial speaker, and having a dimension of the inner and outer diameters of the sponge. The dust-proof device is constructed by attaching rings (13) and (14) that do not change, and adopts a highly elastic material preventive structure to introduce foreign substances such as dust without causing interference or interference with surrounding structures. It provides a dustproof device of coaxial dynamic speaker to prevent the damage.

Description

Dustproof device of coaxial dynamic speaker and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도의 (가) 내지 (라)는 본 발명의 방진 장치의 제작과정과 그 구조를 나타낸 도면.Figure 3 (a) to (d) is a view showing the manufacturing process and structure of the dustproof device of the present invention.

제4도는 본 발명의 스피커 방진 장치를 적용한 스피커 단면도.4 is a cross-sectional view of a speaker to which the speaker vibration isolator of the present invention is applied.

Claims

In the anti-vibration structure installed between the woofer diaphragm and the tweeter structure in the coaxial speaker of the tweeter and the woofer, the anti-vibration structure, the dust-proof cap made by punching a sponge with a high learning shape and a donut-shaped concentric condensation (16) Dustproof device of a coaxial dynamic speaker, characterized in that consisting of.

The dustproof apparatus of claim 1, wherein rings (13) and (14) are not attached to the outer diameter portion and the inner diameter portion of the dustproof cap (16), respectively.

According to claim 2, wherein the outer diameter of the ring 13 is configured in the same size as the dust cap 16, the outer diameter of the punched sponge is configured to be sufficiently larger than the outer diameter of the discharge cap, and then shrink it An anti-vibration device for a coaxial dynamic speaker, characterized in that the ring (13) is attached to the outer diameter portion so that the contracted sponge (15) is located between the inner ear portion rings (13) and (14).

The vibration isolator of a coaxial dynamic speaker according to claim 2 or 3, wherein the cross-sectional shape of the outer diameter ring (13) is formed in a shape that is matched with a counterpart to which it is to be attached.

When the outer diameter of the dustproof cap is larger than the outer diameter of the dustproof cap to be used as a part, the high-shrinkable foam sponge is blown with a thin donut-shaped sponge, and the dimensional change in the outer diameter and the inner diameter of the sponge spun in the process A method of manufacturing a dustproofing device for a coaxial dynamic speaker, comprising: manufacturing a dustproof cap by attaching a non-occupying ring to each other so that a shrinked sponge is fixed between the rings.

※ Note: The disclosure is based on the initial application.