Title:
VIBRATION DAMPING APPARATUS
Document Type and Number:
WIPO Patent Application WO/1997/021046
Kind Code:
A1
Abstract:
A passive type vibration damping apparatus, effective particularly in a low-frequency region, having a simple structure provided integrally with a damper mechanism, which lowers the resonance frequency and amplitude of an object. The damping apparatus (1) comprises first and second damping units. The first damping unit (5), interposed between the primary and secondary sides of a vibration transmission path, includes a first cover (2) on either the primary and secondary side, a second cover (3) on the other side so as to be opposed to the first cover, and a viscoelastic member (4) between the first and second covers so as to interconnect them, wherein the vibration energy transmitted from the first or second cover is absorbed by the shear of the viscoelastic member. The second vibration unit (6, 9, 10, 17), provided in the first or second cover so as to urge these two covers elastically in opposite directions includes an elastic member adapted to absorb the vibration energy, which is transmitted thereto from the first or second cover, by being deformed in the vibration transmission direction.
Inventors:
KAKISAKO EIICHI (JP)
Application Number:
PCT/JP1996/002284
Publication Date:
June 12, 1997
Filing Date:
August 12, 1996
Export Citation:
Assignee:
KAKISAKO EIICHI (JP)
International Classes:
F16F1/12; F16F1/44; F16F1/54; F16F3/04; F16F3/087; F16F3/10; (IPC1-7): F16F15/04
Foreign References:
| JPS4516850B1 | ||||
| JPS6474338A | 1989-03-20 | |||
| JPS5835874Y2 | 1983-08-12 |
Other References:
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 19021/1989 (Laid-Open No. 110734/1990) (NEC CORP., NEC DENKI KOKU UCHU SYSTEM K.K.), 5 September 1990, pages 3-4.
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