Headphone and hands-free loudspeaker for mobile audio devices

Headphone and hands-free loudspeaker for mobile audio devices

  • CN 1,805,617 B
  • Filed: 12/29/2005
  • Issued: 04/16/2014
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
Patent Images

1. an IVR equipment Headphone and hands-free loudspeaker, its feature is as follows:

  • the inside and outside magnetic pole of its tool;

    Ferromagnetism alloy permanent magnet connects and fixedly vibrating membrane fixed support and hollow magnetic core, and vibrating membrane fixed support connects and fixing vibrating membrane;

    Vibrating membrane fixed support material is identical with magnet, makes with magnet with the wide and parallel outer magnetic pole that doubles as;

    Vibrating membrane connects and fixing moving-coil, the independent spaced double winding of moving-coil tool, double winding connects in the same way, and double winding is alone, serial or parallel connection is used, and impedance and the power of the usage quantity of change winding and connected mode change winding are realized loudspeaker impedance and power conversion;

    Outward, the inside and outside wall of medium-sized double winding moving-coil respectively has a single layer winding;

    Hollow magnetic core by interior, in, outer three groups of magnetic poles form, type moving-coil in inner incorporeity magnetic core, placement, on the inwall of interior type moving-coil, be attached with winding and backplane level is arranged at bottom, medium-sized double winding moving-coil is placed in the outside of hollow magnetic core, and moving-coil shares vibrating membrane and inside and outside wall winding and outer magnetic pole.

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