Damper device

Patent metadata

Field	Value
Publication number	US-10487909-B2
Application number	US-201615735045-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 26, 2015
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

Six through holes are formed in pinion gear supporting portions of two input plate members working as a carrier that supports pinion gears of a rotary inertia mass damper. The two input plate members are opposed to each other in such a manner that the through holes are aligned with each other. The through holes support the pinion gear. The input plate members are coupled with each other by means of rivets passing through the through holes located on both sides of the through holes. This configuration ensures strength (rigidity) of the carrier, suppresses deformation of a planetary gear, and improves meshing accuracy of gears.

First claim

The invention claimed is:

1. A damper device configured to include an input element to which a torque from an engine is transmitted, an output element, an intermediate element arranged to be connected to the input element and the output element, the intermediate element including elastic bodies, and a rotary inertia mass damper configured to include a planetary gear that includes a sun gear arranged to rotate integrally with one element of the input element and the output element, a carrier that rotatably supports a plurality of pinion gears, the carrier arranged to rotate integrally with the other element of the input element and the output element, and a ring gear that meshes with the plurality of pinion gears and works as a mass body,
wherein the other element is configured to include two plate members that are opposed to each other and coupled with each other by means of a plurality of rivets disposed between the pinion gears,
wherein the two plate members are coupled with each other by means of the plurality of rivets disposed on a same circumference as the plurality of pinion gears as viewed in a central axis of the damper device, and
wherein the plurality of rivets are disposed adjacent to any one of the plurality of pinion gears not to contact to the any one of the pinion gears.

2. The damper device according to claim 1 ,
wherein the two plate members are coupled with each other by means of the plurality of rivets on an outer side of the sun gear and an inner side of the ring gear.

3. The damper device according to claim 1 ,
wherein the intermediate element is arranged to include a first elastic body connected to the input element and a second elastic body connected to the output element.

4. The damper device according to claim 1 ,
wherein the two plate members are configured to have an identical shape.

5. The damper device according to claim 1 ,
wherein at least spring constants of the first and the second elastic bodies and moments of inertia of the intermediate element and the ring gear are determined, based on a minimum frequency of frequencies of antiresonance points that provide zero vibration amplitude of the output element.

6. The damper device according to claim 5 ,
wherein power from an internal combustion engine is transmitted to the input element, and
wherein at least the spring constants of the first and the second elastic bodies and the moments of inertia of the intermediate element and the ring gear are determined, based on the minimum frequency of the antiresonance point and number of cylinders of the internal combustion engine.

7. The damper device according to claim 6 ,
wherein the damper device is configured to satisfy 500 rpm (120/n)·fa 1 ≤1500 rpm, where “fa 1 ” denotes the minimum frequency of the antiresonance point and “n” denotes the number of cylinders of the internal combustion engine.

8. The damper device according claim 6 ,
wherein the damper device is configured to satisfy Nlup≤(120/n)·fa 1 , where “Nlup” denotes a lockup rotation speed of a lockup clutch arranged to couple the internal combustion engine with the input element.

9. The damper device according claim 7 ,
wherein the damper device is configured to satisfy 900 rpm≤(120/n)·fa 1 ≤1200 rpm.

10. The damper device according to claim 5 ,
wherein the minimum frequency fa 1 of the antiresonance point is expressed by Equation (1):

[

Math
.

⁢
1

]

fa
1

=

1

2
⁢
π

⁢

(

k
1

+

k
2

)

-

(

k
1

+

k
2

)

2

-

4
·

J
2

J
i

·
γ
·

k
1

·

k
2

2
·

J
2

(
1
)

where k 1 denotes the spring constant of the first elastic body, k 2 denotes the spring constant of the second elastic body, J 2 denotes the moment of inertia of the intermediate element, J i denotes the moment of inertia of the ring gear, and γ denotes a constant determined according to a connection configurati

Assignees

• Aisin Aw Ind Co Ltd
• Aisin Aw Co

Inventors

• Yoshikawa Takuya
• Ogawa Aki
• Kato Akiyoshi
• Otsuka Ryosuke
• Ito Kazuyoshi
• Wajima Masaki
• Itou Kazuhiro

Classifications

• F16H1/28

  with gears having orbital motion · CPC title

• F16F15/13407

  Radially mounted springs · CPC title

• F16F15/1478

  with a planetary gear system · CPC title

• F16F15/12353

  Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations · CPC title

• F16H2045/0231

  arranged in series · CPC title