Title:
ACTIVE DYNAMIC DAMPER
Document Type and Number:
Japanese Patent JP3900030
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a cracking noise due to a sampling frequency of an input pulse signal and a high-pitched noise due to a carrier frequency of a PWM signal, when driving an excitation means having high linearity by a PWM control pulse signal of an active dynamic damper.
SOLUTION: A damper body 11 of the dynamic damper 10 is equipped with: a long flat mounting plate part 12; a rod-like central supporting metal fixture 15 mounted perpendicularly on the center of the upper surface side of the mounting plate part 12, composing a supporting member along with the mounting plate part 12; a cylindrical rubber bush, a coil member 24, a magnet part 28, a yoke 33 fitted successively from the lower side to the central supporting metal fixture 15; and a cylindrical case 38 covering the yoke 33. A grommet 41 which is made from a cylindrical rubber elastic body supporting part is fitted to a mounting hole 13c of a side plate part 12c of the mounting plate part 12. The damper body is fixed to a plate-like member 45 through the compressed grommet 41 with a space in between.
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Inventors:
Hiroyuki Ichikawa
Atsushi Muramatsu
Atsushi Muramatsu
Application Number:
JP2002202364A
Publication Date:
April 04, 2007
Filing Date:
July 11, 2002
Export Citation:
Assignee:
Tokai Rubber Industry Co., Ltd.
International Classes:
F16F13/26; F16F7/10; F16F7/108; (IPC1-7): F16F13/26
Domestic Patent References:
| JP2002181126A | ||||
| JP9096340A | ||||
| JP3104594U | ||||
| JP2001117643A |
Attorney, Agent or Firm:
Koji Watanabe
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