Title:
SIGNAL CONVERTER
Document Type and Number:
Japanese Patent JP3427054
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a signal converter of a small-size and a low profile that minimizes the power consumption so as to extend the operating time of a portable phone or a PCS(Personal Communication Service phone) that mounts the signal converter.
SOLUTION: The signal converter is provided with a cylindrical frame 1, a yoke 2 that has a cylindrical projection at its upper and lower parts and with many air holes vertically around the cylindrical main body, two springs 6, 16 that are placed horizontally on the inner face of the frame 1 while enclosing the upper and lower parts of the yoke 2 so as to provide elasticity to the yoke, two magnets 4, 14 that are placed at the upper part and the lower part a part from the projection of the yoke by a prescribed distance while the different polarities oppose to each other at the upper and lower parts of the yoke 2, and two female coils 7, 17 that are placed extending to a space between a diaphragm 24 and a grill 9 mounted to the upper and lower parts of the frame 1 and the respective magnets and the projections of the yoke, receive an external input of drive power with a prescribed frequency and generate a magnetic force for production of vibration or sound.
More Like This:
| JPS5863795 | MAGNETIC FLUID |
| JP2017112498 | SPEAKER SYSTEM |
| JPH0626394 | [Name of device] Speaker |
Inventors:
Nak Hyun, Kim
Application Number:
JP2000364274A
Publication Date:
July 14, 2003
Filing Date:
November 30, 2000
Export Citation:
Assignee:
Sambu Communic Company, Limited.
International Classes:
H04R9/02; B06B1/04; B06B1/14; G10K9/12; G10K9/13; H02K33/06; H04M1/02; H04M1/03; H04R1/00; H04R9/06; H04R9/10; H04R11/14; (IPC1-7): H04R9/02; B06B1/04; B06B1/14; G10K9/12; G10K9/13; H02K33/06; H04M1/02; H04M1/03; H04R1/00; H04R9/10
Domestic Patent References:
| JP6311597A | ||||
| JP1223438A | ||||
| JP275182U |
Other References:
【文献】国際公開99/039843(WO,A1)
Attorney, Agent or Firm:
Fujiya Shiga (2 outside)