Damper device

Patent metadata

Field	Value
Publication number	US-11236800-B2
Application number	US-201916281970-A
Country	US
Kind code	B2
Filing date	Feb 21, 2019
Priority date	Mar 19, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A damper device is disclosed. The damper device includes first and second rotary members, a plurality of elastic members, and a plurality of end seat members. The first rotary member includes a first engaging portion and an annular chamber filled with a viscous fluid in an interior thereof. The second rotary member includes a second engaging portion, and is rotatable relative to the first rotary member. The plurality of elastic members are aligned in a circumferential direction in the interior of the annular chamber, and elastically couple the first rotary member and the second rotary member in a rotational direction. Each of the plurality of end seat members is disposed between one of the plurality of elastic members and at least one of the first and second engaging portions. The each of the plurality of end seat members includes an end seat communicating groove penetrating therethrough in the circumferential direction.

First claim

What is claimed is:

1. A damper device comprising:
a first rotary member including a first engaging portion and an annular chamber filled with a viscous fluid in an interior thereof;
a second rotary member including a second engaging portion, the second rotary member rotatable relative to the first rotary member;
a plurality of elastic members aligned in a circumferential direction in the interior of the annular chamber, the plurality of elastic members configured to elastically couple the first rotary member and the second rotary member in a rotational direction; and
a plurality of end seat members, each of the plurality of end seat members disposed between one of the plurality of elastic members and at least one of the first engaging portion and the second engaging portion, the each of the plurality of end seat members including an end seat communicating groove penetrating therethrough in the circumferential direction,
the first engaging portion protruding in an axial direction such that an end of one of the plurality of end seat members in the circumferential direction is engaged with the first engaging portion,
the end seat communicating groove being provided on both corners at which an outer peripheral surface and lateral surfaces intersect in the each of the plurality of end seat members, and
the end seat communicating groove at least partly overlapping the first engaging portion as viewed along the circumferential direction.

2. The damper device according to claim 1 , further comprising:
at least one intermediate seat member disposed between the plurality of elastic members, the at least one intermediate seat member including an intermediate seat communicating groove penetrating therethrough in the circumferential direction.

3. The damper device according to claim 2 , wherein
the end seat communicating groove and the intermediate seat communicating groove are disposed on a circumference of a common circle.

4. The damper device according to claim 1 , wherein
the first rotary member includes a pair of disc-shaped members opposed to each other in the axial direction, and
the second rotary member is disposed between the pair of disc-shaped members in the axial direction.

5. The damper device according to claim 1 , wherein
the each of the plurality of end seat members includes a hole penetrating through a bottom portion of the each of the plurality of end seat members in the circumferential direction, an end surface of the one of the plurality of elastic members contacting the bottom portion.

Assignees

• Exedy Corp

Inventors

• Aikawa Masataka
• Matsuo Hiroki

Classifications

• F16F15/1234

  Additional guiding means for springs, e.g. for support along the body of springs that extend circumferentially over a significant length · CPC title

• F16F15/16

  using a fluid {or pasty material}(F16F9/53, F16F15/13157 take precedence; devices connecting input and output members F16D) · CPC title

• F16F15/13492 Primary

  the sets of springs being arranged at substantially the same radius · CPC title

• F16F2230/04

  Lubrication · CPC title

• F16F15/12326 Primary

  End-caps for springs · CPC title