DAMPING STRUCTURE

• US 20120024645A1
• Filed: 04/09/2010
• Published: 02/02/2012
• Est. Priority Date: 04/09/2009
• Status: Active Grant

• Current Assignee: Klaus Schmidt
• Original Assignee: Klaus Schmidt
• Inventors: Tsugihashi, Kazuki, Sugimoto, Akio, Yamaguchi, Zenzo, Masuda, Kyoko, Yano, Yoshio
• Granted Patent: US 9,121,466 B2
• Time in Patent Office: Days
• US Class Current: 188/268
• CPC Class Codes: F16F 15/363 using rolling bodies, e.g. balls free to move in a circumferential direction
• CPC Class Codes: F16F 7/015 the particles being spherical, cylindrical or the like

Abstract

According to the invention, there is provided a damping structure capable of obtaining a sufficient damping effect even against vibrations of small amplitudes, by promoting movements of powder/particle materials inside a hollow body. In the damping structure of the invention, a damping member 2 is provided on a structure 1 to be damped. The damping member 2 includes a hollow body 5 which is filled with powder/particle materials 3, partially leaving a space 4. A vibration wall face part 7 which vibrates more violently than the structure 1, on receiving vibration, is formed in at least a part of wall face parts 6 of the hollow body 5. The vibration wall face part 7 is preferably formed of a material having a lower elastic modulus and/or a lower density than the other parts.

Claims

1. A damping structure comprising a damping member which is provided on a structure to be damped,

wherein the damping member is composed of a hollow body which is filled with a powder/particle material, with partially leaving a space, and

a vibration wall face part, which vibrates more violently than the structure to be damped on receiving vibration, is formed in at least a part of wall face parts of the hollow body.

2. The damping structure according to claim 1, wherein the vibration wall face part is formed of a material having a lower elastic modulus and/or a lower density than the other parts of the hollow body.

3. The damping structure according to claim 1, wherein the powder/particle material is in contact with the vibration wall face part when the structure is not vibrating.

4. The damping structure according to claim 1, wherein the hollow body has the vibration wall face part, and a rigid wall face part which vibrates with substantially same amplitude as the structure to be damped, and

the powder/particle material is in contact with both the vibration wall face part and the rigid wall face part when the structure is not vibrating.

5. The damping structure according to claim 1, wherein the hollow body has a rigid wall face part which vibrates with substantially same amplitude as the structure to be damped, and

the hollow body is mounted to the structure to be damped in a state where the rigid wall face part is in contact with a surface of the structure to be damped.

6. The damping structure according to claim 1, wherein the vibration wall face part is formed in a wall face part which is not in parallel with a vibration direction of the structure to be damped, out of the wall face parts of the hollow body.

7. The damping structure according to claim 2, wherein the powder/particle material is in contact with the vibration wall face part when the structure is not vibrating.

8. The damping structure according to claim 2, wherein the hollow body has the vibration wall face part, and a rigid wall face part which vibrates with substantially same amplitude as the structure to be damped, and

the powder/particle material is in contact with both the vibration wall face part and the rigid wall face part when the structure is not vibrating.