COMPACT VIBRATION DAMPING DEVICE AND VEHICLE

• US 20200132159A1
• Filed: 10/23/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: Airbus Helicopters
• Original Assignee: Airbus Helicopters
• Inventors: CHAPUIS-DESPLANQUES, Anne-Claire, ROUCHON, Thibaut, MANFREDOTTI, Thomas
• Granted Patent: US 11,796,033 B2
• Time in Patent Office: Days
• CPC Class Codes: B64C 2027/002 mounted between the rotor drive and the fuselage
• CPC Class Codes: B64C 2027/005 using suspended masses
• CPC Class Codes: B64C 27/001 Vibration damping devices
• CPC Class Codes: F16F 15/1295 characterised by means for interconnecting driven plates and retainer, cover plates
• CPC Class Codes: F16F 15/34 Fastening arrangements therefor

Abstract

A vibration damping device equipped with a resonator mechanism comprising at least one resonator, the at least one resonator having a first beater extending from an embedded end to a free beating end. The resonator consists of an elastically deformable base equipped with a first branch and a second branch connected by a central section, the embedded end being embedded at the first branch, the first branch extending from a first end to a second end each rigidly fastened to a mount, the second branch extending from a first end section to a second end section each rigidly fastened to a vibration source.

Claims

1. A vibration damping device equipped with a resonator mechanism comprising at least one resonator, the at least one resonator having at least one beater comprising a first beater extending from an embedded end to a beating free end, the at least one resonator comprising an elastically deformable base,

wherein the base is equipped with a first branch and a second branch connected by a central section, the embedded end being embedded in the first branch, the first branch extending from a first end to a second end each of first end and second end is designed to be rigidly fastened to a mount, the second branch extending from a first end section to a second end section, each of first end section and second end section is designed to be rigidly fastened to a vibration source.

2. The vibration damping device according to claim 1,

wherein the at least one resonator comprises at least two resonators, the two resonators are different.

3. A vibration damping device according to claim 1,

wherein the resonator mechanism comprises at least one pair of two resonators, the two resonators in a pair being arranged in an inverse parallel configuration in a direction, the free end of the first beater of a resonator in a pair being arranged according to the direction between the base of this resonator and the free end of the first beater of the other resonator in that pair.

4. A vibration damping device according to claim 1,

wherein the vibration damping device comprises at least one pair of two resonators, the first end and the second end of the first branch of one of the two resonators in a pair being respectively rigidly connected by two connecting stringers to the first end and to the second end of the first branch of the other resonator in that pair, at least one of the two connecting stringers having at least one fastener to rigidly attach it to the mount.

5. The vibration damping device according to claim 4,

wherein the vibration damping device comprising at least two pairs of two resonators, a connecting stringer is common to the two pairs of two resonators.

6. A vibration damping device according to claim 1,

wherein the vibration damping device comprises at least one pair of two resonators, the first end section of the second branch of a resonator in the pair being rigidly fastened by a link bar to the first end section of the second branch of the other resonator in that pair, the second end section of the second branch of a resonator in the pair being rigidly connected by a link bar to the second end section of the second branch of the other resonator in that pair or to the second end section of the second branch of a resonator in another pair.

7. A vibration damping device according to claim 1,

wherein the vibration damping device comprises at least one stop to limit the beating at least of the first beater.

8. A vibration damping device according to claim 1,

wherein the vibration damping device comprises at least one spacer to prevent contact between the mount and at least the first beater or between at least the first beater and the vibration source.

9. A vibration damping device according to claim 1,

wherein the resonator mechanism forms a monolithic assembly.

10. A vibration damping device according to claim 1,

wherein the resonator mechanism is flat if there is no deformation of the first beater, the resonator mechanism having a consistent thickness.

11. A vibration damping device according to claim 1,

wherein the vibration damping device comprises the mount, the mount comprises at least one opening facing the free end.

12. A vibration damping device according to claim 1,

wherein the vibration damping device comprises the vibration source, the vibration source comprises at least one cut facing the free end.

13. A vibration damping device according to claim 1,

wherein the first branch and the second branch of the resonator are different or identical.

14. A vibration damping device according to claim 1,

wherein the base is in the shape of an H.

15. A vibration damping device according to claim 1,

wherein the at least one resonator comprises a second beater, the second beater extending from an embedded area to a free beating area, the embedded area being embedded in the second branch.

16. A vehicle,

wherein the vehicle comprises a vibration damping device according to claim 1.