Title:
MOVING-COIL LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2018/040396
Kind Code:
A1
Abstract:
Disclosed is a moving-coil loudspeaker, comprising a vibration system and a magnetic circuit system located below the vibration system. The vibration system comprises a vibrating diaphragm, a spider, and a voice coil that are combined from top to bottom. The vibrating diaphragm comprises a vibrating diaphragm body with a surround, and a vibrating diaphragm reinforcing portion incorporated in the central position below the vibrating diaphragm body. The vibrating diaphragm reinforcing portion comprises a first layer of electrically conductive material, the spider comprises a second layer of electrically conductive material, and the vibrating diaphragm reinforcing portion is bonded to and conducts with the spider by an electrically conductive adhesive. The magnetic circuit system comprises a central spring washer, a central magnet, and a magnetically conductive yoke combined together from top to bottom. The first layer of electrically conductive material and the second layer of electrically conductive material serve as a movable plate, and the central spring washer, the central magnet and the magnetically conductive yoke serve as a fixed plate, thus forming a capacitor structure for detecting the vibration displacement of the moving-coil loudspeaker. With the capacitor structure provided by the present invention, the vibration displacement of the moving-coil loudspeaker can be monitored.
Inventors:
CAO HUIXIAN (CN)
JIANG SHU (CN)
YANG XINFENG (CN)
JIANG SHU (CN)
YANG XINFENG (CN)
Application Number:
PCT/CN2016/111128
Publication Date:
March 08, 2018
Filing Date:
December 20, 2016
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06
Foreign References:
| CN106162470A | 2016-11-23 | |||
| CN106231513A | 2016-12-14 | |||
| CN106211000A | 2016-12-07 | |||
| CN104780489A | 2015-07-15 | |||
| CN204948356U | 2016-01-06 | |||
| CN105657614A | 2016-06-08 | |||
| US20160241957A1 | 2016-08-18 |
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
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