SPEAKER MAGNETIC CIRCUIT AND SPEAKER DRIVER

The speaker magnetic circuit includes a yoke cover that is formed from a tubular magnetic body with a diaphragm attachable to an end portion on an axial direction one-side, a magnet arranged at an inside of the yoke cover, a volume adjusting member that is formed from a tubular non-magnetic body, th...

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Bibliographische Detailangaben
Hauptverfasser:	Muta, Yusuke, Han, Haijiao
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	The speaker magnetic circuit includes a yoke cover that is formed from a tubular magnetic body with a diaphragm attachable to an end portion on an axial direction one-side, a magnet arranged at an inside of the yoke cover, a volume adjusting member that is formed from a tubular non-magnetic body, that is provided between the yoke cover and the magnet, and that is formed with a first groove extending in the axial direction, and a yoke base that is formed from a magnetic body, that is provided at an axial direction other-side of the magnet, and that is also formed with a second groove at a position corresponding to the first groove. The first groove and the second groove configure a duct portion that communicates a space inside the yoke cover at the axial direction one-side with a space at the axial direction other-side therein.