JPH0213394U

JPH0213394U -

Info

Publication number: JPH0213394U
Application number: JP9084188U
Authority: JP
Priority date: 1988-07-08
Filing date: 1988-07-08
Publication date: 1990-01-26

Description

[Brief explanation of drawings]

第１図〜第８図はこの考案の一実施例を示す構
成図、第９図はその説明のための図、第１０図〜
第１２図はこの考案の他の実施例を示す構成図、
第１３図〜第１８図は従来例の説明のための図で
ある。１はイヤホン、２はハウジング、６はコード、
１１はハンガー、１１Ａは外側部材、１１Ｂは内
側部材、１７は音抜用の透孔、１９は移動用長孔
、２１はダクト、２５はコードブツシユ、２８は
メツシユ材、２９は操作用突起である。 Figures 1 to 8 are configuration diagrams showing one embodiment of this invention, Figure 9 is an explanatory diagram, and Figures 10 to 8.
FIG. 12 is a configuration diagram showing another embodiment of this invention;
FIGS. 13 to 18 are diagrams for explaining conventional examples. 1 is the earphone, 2 is the housing, 6 is the cord,
11 is a hanger, 11A is an outer member, 11B is an inner member, 17 is a through hole for sound reduction, 19 is a long hole for movement, 21 is a duct, 25 is a cord bush, 28 is a mesh material, and 29 is a projection for operation. .

Claims

[Claims for Utility Model Registration] 1. A housing in which an electroacoustic transducer is housed is attached to the ends of hangers arranged at both ends of the headband, and inside the hanger, one end is attached to the electroacoustic transducer of the housing. An electroacoustic transducer characterized in that an acoustic tube is inserted, which communicates with the rear surface side of a transducer element, has an open end at the other end, and has at least a bent portion with a zigzag structure. 2. The electroacoustic transducer according to claim 1, wherein a cord bushing for holding a cord derived from the electroacoustic transducer element is formed integrally with the acoustic tube. 3. The electroacoustic transducer according to claim 2, wherein the cord bush is connected to the bent portion of the acoustic tube. 4. The electroacoustic transducer according to claim 1, wherein the acoustic tube is expandable and retractable from the outside of the hanger.