Importance

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Abstract

In a sound chaber closure for an electroacoustic transducer installed in a housing, in particular an electrodynamic sound generator with a moving coil, the housing is formed to receive a tubular acoustic plug with an acoustic line leading to a stethoscope earpiece. The acoustic plug can be introduced into a sound chamber of the housing which closes when the plug is being pulled out. To obtain a much better acoustic coupling of the stethoscope line to the sound generator, the sound chamber closure is designed as a slide which is arranged inclined on the axis of the sound exit opening designed as sound conduction tube, lies in the path of the connecting tubes of the acoustic plug to be inserted, and is integrally connected with a ring containing the transducer diaghragm with the moving coil, which ring abuts at the opening of a box-like housing, at the bottom of which is an annular gap magnet system, which ring is displaceable counter to the force of one or more springs perpendicular to the direction of introduction of the connecting tubes of the acoustic plug in the axial direction of the box-like housing, and that the moving coil is spaced from the magnet system, when the sound exit opening is closed by the slide, whereas with the acoustic plug introduced into the sound exit opening, it is in the air gap of the magnet system.

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First Claim