Damping component and damping structure

Patent metadata

Field	Value
Publication number	US-10054181-B2
Application number	US-201615072633-A
Country	US
Kind code	B2
Filing date	Mar 17, 2016
Priority date	Mar 20, 2015
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A damping component includes a base with an attachment portion to be attached to a vibrated member, a damping member disposed at an outer circumferential side of the base while being compressed, and a holding portion disposed at an outer circumferential side of the damping member and compressively holding the damping member. The damping member has rigidity lower than rigidity of the base and rigidity of the holding portion and has a loss factor, measured by a mechanical impedance method in a state being compressed between the base and the holding portion, of 0.05 or more.

First claim

What is claimed is:

1. A damping component comprising:
a base comprising an attachment portion to be attached to a vibrated member;
a damping member disposed at an outer circumferential side of the base in a compressed state; and
a holding portion disposed at an outer circumferential side of the damping member and compressively holding the damping member,
wherein the base comprises a projecting portion which projects in a radial direction of the base and has an outer diameter smaller than an inner diameter of the holding portion, the projecting portion being disposed between the attachment portion and the damping member in an axial direction of the base, and
wherein the damping member has rigidity lower than rigidity of the base and rigidity of the holding portion and has a loss factor, measured by a mechanical impedance method in a state being compressed between the base and the holding portion, of 0.05 or more.

2. The damping component according to claim 1 , further comprising an intermediate member disposed between the base and the damping member.

3. The damping component according to claim 2 , wherein the intermediate member is formed into a cylindrical shape,
wherein the damping member is formed into a cylindrical shape whose inner diameter is smaller than an outer diameter of the intermediate member, and
wherein the intermediate member is disposed at an inner circumferential side of the damping member.

4. The damping component according to claim 1 , wherein the holding portion is disposed around the base.

5. The damping component according to claim 1 , wherein the damping member is disposed at the outer circumferential side of the base so as to surround the outer circumference of the base.

6. The damping component according to claim 1 , wherein the attachment portion comprises a screw portion removably attachable to the vibrated member.

7. The damping component according to claim 6 , wherein a center axial line of the base is coincident with a center axial line of the screw portion.

8. The damping component according to claim 1 , further comprising an adjusting portion capable of adjusting a compression amount of the damping member.

9. The damping component according to claim 8 , wherein the adjusting portion adjusts a distance between first and second ends of the holding portion in a circumferential direction of the holding portion.

10. The damping component according to claim 9 , wherein the holding portion comprises first and second pressing portions coupled with each other at a coupling portion, and
wherein the adjusting portion adjusts the distance between the first and second ends of the holding portion.

11. The damping component according to claim 8 , wherein the adjusting portion comprises a bolt to be attached to the holding portion and a nut screwed with the bolt and is capable of adjusting the compression amount of the damping member by changing a relative positional relationship between the bolt and the nut, and
wherein one or a plurality of weights is removably attached to a male screw portion of the bolt attached to the holding portion.

12. The damping component according to claim 1 , wherein at least one of the holding portion and the base includes a retaining portion formed into a convex or concave shape on a surface thereof in contact with the damping member being compressed.

13. The damping component according to claim 1 , wherein the damping member has a loss factor, measured by the mechanical impedance method while being compressed, of 0.4 or more.

14. The damping component according to claim 1 , wherein weight of the holding portion is heavier than weight of the damping member.

15. The damping component according to claim 1 , wherein the attachment portion is formed integrally with the base.

16. A damping structure comprising:
a vibrated member to which vibration is transmitted from an exciter; and
a damping component coupled with the vibrated member, the damping component comprising:
a base comprising an attachment portion to be attached to the vibrated member;
a damping member disposed at an outer circumferential side of the base while being compressed; and
a holding portion disposed at an outer circumferential side of the damping member and compressively holding the damping member;

wherein the damping member has rigidity lower than rigidity of the base and rigidity of the holding portion and has a loss factor, measured by a mechanical impedance method in a state being compressed between the base and the holding portion, of 0.05 or more.

17. The damping component according to claim 16 , further comprising an intermediate member provided between the base and the damping member.

18. The damping component according to claim 17 , wherein the intermediate member is formed into a cylindrical shape,
wherein the damping member is formed into a cylindrical shape whose inner diameter is smaller than an outer diameter of the intermediate member, and
wherein the intermediate member is disposed at an inner circumferential side of the damping member.

19. The damping component according to claim 16 , wherein the holding portion is disposed around the base.

20. The damping component according to claim 16 , wherein the damping member is disposed at the outer circumferential side of the base so as to surround the outer circumference of the base.

21. The damping component according to claim 16 , wherein the attachment portion comprises a screw portion removably attachable to the vibrated member.

22. The damping component according to claim 21 , wherein a center axial line of the base is coincident with a center axial line of the screw portion.

23. The damping component according to claim 16 , wherein the holding portion comprises an adjusting portion capable of adjusting a compression amount of the damping member.

24. The damping component according to claim 23 , wherein the adjusting portion adjusts a distance between first and second ends of the holding portion in a circumferential direction of the holding portion.

25. The damping component according to claim 24 , wherein the holding portion comprises first and second pressing portions coupled with each other at a coupling portion, and
wherein the adjusting portion adjusts the distance between the first and second ends of the holding portion.

26. The damping component according to claim 23 , wherein the adjusting portion comprises a bolt to be attached to the holding portion and a nut screwed with the bolt and is capable of adjusting the compression amount of the damping member by changing a relative positional relationship between the bolt and the nut, and
wherein one or a plurality of weights is removably attachable to a male screw portion of the bolt attached to the holding portion.

27. The damping component according to claim 16 , wherein at least one of the holding portion and the base includes a retaining portion formed into a convex or concave shape on a surface thereof in contact with the damping member being compressed.

28. The damping component according to claim 16 , wherein the damping member has a loss factor, measured by the mechanical impedance method while being compressed, of 0.4 or more.

29. The damping component according to claim 16 , wherein weight of the holding portion is heavier than weight of the damping member.

Assignees

• Canon Kk

Inventors

• Endo Rie
• Yokoyama Katsunori
• Yamamoto Shinji
• Takahata Kazuaki
• Shibata Kazumasa
• KASAMA Hiroki
• Nitobe Satoru

Classifications

• F16F7/108 Primary

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