JPS61197798U

JPS61197798U -

Info

Publication number: JPS61197798U
Application number: JP8082485U
Authority: JP
Priority date: 1985-05-31
Filing date: 1985-05-31
Publication date: 1986-12-10

Description

[Brief explanation of the drawing]

第１図〜第５図は本考案の一実施例を示すもの
で、第１図は分解斜面図、第２図は断面図、第３
図は磁気ギヤツプの正面図、第４図と第５図はリ
ボン振動板の接続回路図、第６図は極片の形状を
変えた他の実施例の要部の断面図、第７図〜第９
図は防磁型とした実施例で、第７図は斜面図、第
８図は断面図、第９図は漏洩磁束の状態図、第１
０図〜第１３図は従来のリボン形スピーカを示し
、第１０図は断面図、第１１図はその漏洩磁束の
状態図、第１２図は防磁型とした断面図、第１３
図は２リボン振動板駆動型の断面図で、図中Ｎ，
Ｓは極性を示す。１１……マグネツト、１１ａ……細長孔、１２
……ボトムプレート、１２ａ……極片、１３……
トツププレート、１３ａ……細長孔、１３ｂ……
極片、１４……リボン振動板、１５……反発マグ
ネツト、１６……防磁キヤツプ、，……磁気
ギヤツプ。 Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is an exploded perspective view, Figure 2 is a sectional view, and Figure 3 is a cross-sectional view.
The figure is a front view of the magnetic gap, Figures 4 and 5 are connection circuit diagrams of the ribbon diaphragm, Figure 6 is a cross-sectional view of the main parts of another embodiment in which the shape of the pole piece is changed, and Figures 7- 9th
The figure shows an example of a magnetically shielded type.
Figures 0 to 13 show conventional ribbon-shaped speakers, Figure 10 is a cross-sectional view, Figure 11 is a state diagram of leakage magnetic flux, Figure 12 is a cross-sectional view of a magnetically shielded type speaker, and Figure 13 is a cross-sectional view.
The figure is a cross-sectional view of a two-ribbon diaphragm drive type.
S indicates polarity. 11...Magnet, 11a...Slot hole, 12
...Bottom plate, 12a...Pole piece, 13...
Top plate, 13a...Elongated hole, 13b...
Pole piece, 14... Ribbon diaphragm, 15... Repulsion magnet, 16... Magnetic shield cap, ,... Magnetic gap.

Claims

[Scope of utility model registration request]

A magnet with an elongated hole formed in the center and with opposite poles on both sides where the hole is bored, and a pole piece that penetrates the hole and protrudes from the top surface of the magnet and comes into contact with the bottom surface of the magnet. a bottom plate, a top plate having a pair of opposing pole pieces on both sides of the pole piece of the bottom plate that protrudes from the top surface of the magnet, and a top plate that protrudes from the top surface of the magnet; A ribbon-shaped speaker featuring a ribbon diaphragm.