Title:
DIAPHRAGM FOR CORRECTION, MANUFACTURING METHOD THEREOF DUAL CORN TYPE SPEAKER, AND DIAPHRAGM IMPORTED TIMBER
Document Type and Number:
Japanese Patent JP3751245
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a diaphragm for correction that is highly stiff, and can appropriately correct a high region, and to provide a dual corn type speaker, a manufacturing method of the diaphragm for correction, and a diaphragm imported timber.
SOLUTION: The diaphragm 3 for correction reproduces sounds from a middle to low region range, corrects a reproduction at a reproduction frequency is mounted to a voice coil bobbin 4 in a speaker 1, has an annular side 3-1a that is provided in one piece at a bottom section 3-1b and around the bottom section 3-1b, and has a diaphragm base 3-1 whose diameter increases as the diameter of the side 3-1a is separated from the bottom section 3-1b. Additionally, the diaphragm 3 has an annular diaphragm imported timber 3-2 that is mounted to an end at the opposite side of the bottom 2-1b in the diaphragm base 3-1 and whose diameter is increased as it is separated from the edge. Then, the diaphragm base 3-1 and the diaphragm imported timber 3-2 are joined for composition.
Inventors:
Hiroaki Kawai
Application Number:
JP2001343919A
Publication Date:
March 01, 2006
Filing Date:
November 08, 2001
Export Citation:
Assignee:
Kenwood Corporation
International Classes:
H04R7/12; H04R9/00; H04R7/14; (IPC1-7): H04R7/12; H04R7/14; H04R9/00
Domestic Patent References:
| JP2000032591A | ||||
| JP4004499U | ||||
| JP1057885U | ||||
| JP1064293U | ||||
| JP56066998A | ||||
| JP2028196U | ||||
| JP2021995U |
Attorney, Agent or Firm:
Shuji Watanabe
Hiroshi Hasegawa
Hiroshi Hasegawa