JPS58147379U - telephone receiver - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は受話器の等価回路図、第２図は本考案の一実施
例における受話器の断面図、第３図は同受話器の感度偏
差を示す図、第４図は同受話器の周波数特性図である。 １・・・・・・磁石、２・・・・・・溝、３・・・・・
・内筒体、４・・・・・・制動素子、５・・・・・・振
動板、６・・・・・・ボビン、７・・・・・・ボイスコ
イル、８・・・・・・外筐体、９・・・・・・イヤピー
ス、１０・・・・・・孔、１１・・・・・・孔、■・・
・・・・前気室、■・・・・・・第１背気室、■・・・
・・・第２背気室。Fig. 1 is an equivalent circuit diagram of the receiver, Fig. 2 is a cross-sectional view of the receiver in an embodiment of the present invention, Fig. 3 is a diagram showing the sensitivity deviation of the receiver, and Fig. 4 is a frequency characteristic diagram of the receiver. be. 1...Magnet, 2...Groove, 3...
・Inner cylinder body, 4... Braking element, 5... Vibration plate, 6... Bobbin, 7... Voice coil, 8...・Outer housing, 9...earpiece, 10...hole, 11...hole, ■...
...Anterior air chamber, ■...First dorsal air chamber, ■...
...Second dorsal air chamber.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 開口部にイヤピースが設けられた基原体内に動電型変換
器を収納し、上記動電型変換器の振動板の背部に形成さ
れる背気室の合成スチフネスと音響負荷のスチフネスと
の和を、上記動電型変換器の振動板の等価スチフネスよ
り大きくするとともに、上記外筐体に外部と連通ずる孔
を形成してなる受話器。An electrodynamic transducer is housed in a base body with an earpiece provided in the opening, and the sum of the composite stiffness of the back air chamber formed at the back of the diaphragm of the electrodynamic transducer and the stiffness of the acoustic load is calculated. is larger than the equivalent stiffness of the diaphragm of the electrodynamic transducer, and the outer casing has a hole communicating with the outside.