JPH0228196U

JPH0228196U -

Info

Publication number: JPH0228196U
Application number: JP10732788U
Authority: JP
Priority date: 1988-08-13
Filing date: 1988-08-13
Publication date: 1990-02-23

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例のダブルコーンスピ
ーカ２１の断面図、第２図はダブルコーンスピー
カ２１の正面図、第３図はダブルコーンスピーカ
２１の周波数特性を示すグラフ、第４図は本考案
の他の実施例のダブルコーンスピーカ４１の断面
図、第５図はダブルコーンスピーカ４１の正面図
、第６図は本考案のさらに他の実施例のダブルコ
ーンスピーカ５１の断面図、第７図はダブルコー
ンスピーカ５１の正面図、第８図は本考案の他の
実施例のダブルコーンスピーカ６１の断面図、第
９図は従来技術のダブルコーンスピーカ１の断面
図、第１０図はダブルコーンスピーカ１の周波数
特性を示すグラフである。２１，４１，５１，６１……ダブルコーンスピ
ーカ、２５……フレーム、２６……ボイスコイル
、２９……メインコーン、３０，４２……サブコ
ーン、４０，４３……折返し部、５２……吸音体
。 FIG. 1 is a sectional view of a double cone speaker 21 according to an embodiment of the present invention, FIG. 2 is a front view of the double cone speaker 21, FIG. 3 is a graph showing the frequency characteristics of the double cone speaker 21, and FIG. 4 is a graph showing the frequency characteristics of the double cone speaker 21. 5 is a front view of the double cone speaker 41, and FIG. 6 is a sectional view of a double cone speaker 51 according to yet another embodiment of the present invention. 7 is a front view of a double cone speaker 51, FIG. 8 is a sectional view of a double cone speaker 61 according to another embodiment of the present invention, FIG. 9 is a sectional view of a conventional double cone speaker 1, and FIG. 3 is a graph showing frequency characteristics of the double cone speaker 1. FIG. 21, 41, 51, 61... double cone speaker, 25... frame, 26... voice coil, 29... main cone, 30, 42... sub cone, 40, 43... folded part, 52... sound absorber .

Claims

[Claims for Utility Model Registration] (1) In a double cone speaker in which a large-diameter main cone and a small-diameter sub-cone are attached to one voice coil at the center, the sub-cone is provided with a A double cone speaker characterized by being provided with a blocking means for preventing phase sound from being radiated. (2) In a double cone speaker in which a large-diameter main cone and a small-diameter sub-cone are attached to one voice coil at the center, a protrusion that protrudes outward is provided on the outer periphery of the tip of the sub-cone. A double cone speaker featuring (3) In a double cone speaker in which a large-diameter main cone and a small-diameter sub-cone are attached to one voice coil at the center, a protrusion that protrudes outward is provided on the outer periphery of the sub-cone in the middle. A double cone speaker featuring (4) A double cone speaker in which a large-diameter main cone and a small-diameter sub-cone are attached to one voice coil at the center, characterized in that a sound-absorbing member is provided around the outer periphery of the sub-cone.