Damper device

Patent metadata

Field	Value
Publication number	US-11754144-B2
Application number	US-202117158364-A
Country	US
Kind code	B2
Filing date	Jan 26, 2021
Priority date	Feb 26, 2020
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a first stopper hole, a second stopper hole and a plurality of stop members. The first and second stopper holes are provided on both circumferential sides of each of a plurality of first window holes of the second rotor so as to circumferentially extend therefrom. One or both of the first and second stopper holes communicates at one end thereof with each first window hole and extends at the other end thereof to a position radially outside one of a plurality of second window holes of the second rotor. The stop members are fixed to the first rotor. Each stop member axially penetrates each of the first and second stopper holes and is circumferentially movable within each of the first and second stopper holes.

First claim

What is claimed is:

1. A damper device, comprising:
a first rotor including a plurality of first window portions;
a second rotor disposed to be rotatable relative to the first rotor, the second rotor including a plurality of first window holes at positions corresponding to positions of the plurality of first window portions;
a plurality of first elastic members, each of which is accommodated in one of the first window portions and a corresponding one of the first window holes, the plurality of first elastic members configured to elastically couple the first rotor and the second rotor in a rotational direction; and
a stopper mechanism configured to restrict an angle of relative rotation between the first rotor and the second rotor to a predetermined angular range, wherein
the stopper mechanism includes
a first stopper hole associated with and provided on a first circumferential side of each of the plurality of first window holes at an interval therefrom, each of the first stopper holes made in shape of a circular arc having a first pitch radius,
a second stopper hole associated with, provided on a second circumferential side of, and extending from each of the plurality of first window holes, each of the second stopper holes made in shape of a circular arc having a second pitch radius smaller than the first pitch radius, each of the second stopper holes communicating with the first window hole from which it extends at an end thereof located closest to the first window hole from which it extends, and
a plurality of stop members fixed to the first rotor, with one of the plurality of stop members axially penetrating each of the first and second stopper holes and being circumferentially movable therein.

2. The damper device according to claim 1 , wherein
the first rotor includes a plurality of second window portions provided radially inside the plurality of first window portions,
the second rotor includes a plurality of second window holes provided radially inside the plurality of first window holes,
the damper device further comprises a plurality of second elastic members, each of which is accommodated in one of the second window portions and a corresponding one of the second window holes, the plurality of second elastic members configured to elastically couple the first rotor and the second rotor in the rotational direction, and
each of the first and second stopper holes extends at an end thereof located farthest from the first window hole from which it extends to a position radially outside one of the plurality of second window holes.

3. The damper device according to claim 1 , wherein
each of the plurality of first window holes includes first and second pressing surfaces on first and second circumferential ends thereof, with the first pressing surface including a protruding portion; the first pressing surface being located closer to the first stopper hole associated with the first window hole than to the second stopper hole associated with the first window hole; and the protruding portion protruding to bulge toward the second pressing surface, which is opposed to the first pressing surface, and
the first stopper hole extends toward the protruding portion at an end thereof that is located closest to the first window with which the first stopper hole is associated.

4. A damper device, comprising:
a first rotor including a plurality of first window portions and a plurality of second window portions, the plurality of first window portions disposed radially outside the plurality of second window portions;
a second rotor disposed to be rotatable relative to the first rotor, the second rotor including a plurality of first window holes at positions corresponding to positions of the plurality of first window portions and a plurality of second window holes at positions corresponding to positions of the second window portions, the plurality of first window holes disposed radially outside the plurality of second window holes;
a plurality of elastic members, some of which are each accommodated in one of the first window portions and a corresponding one of the first window holes and some of which are each accommodated in one of the second window portions and a corresponding one of the second window holes, the plurality of elastic members configured to elastically couple the first rotor and the second rotor in a rotational direction; and
a stopper mechanism configured to restrict an angle of relative rotation between the first rotor and the second rotor to a predetermined angular range, wherein
the stopper mechanism includes
a first stopper hole provided on a first circumferential side of each of the plurality of first window holes of the second rotor so as to circumferentially extend therefrom, each of the first stopper holes communicating with the first window hole from which it extends at a first end thereof that is closest to the first window hole from which it extends, and each of the first stopper holes extending at a second end thereof that is located farthest from the first window hole from which it extends to a position radially outside one of the plurality of second window holes,
a second stopper hole provided on a second circumferential side of each of the plurality of first window holes of the second rotor so as to circumferentially extend therefrom, and
a plurality of stop members fixed to the first rotor, with one of the plurality of stop members axially penetrating each of the first and second stopper holes and being circumferentially movable therein.

5. The damper device according to claim 4 , wherein each of the second stopper holes communicates with the first window hole from which it extends at a first end thereof that is located closest to the first window hole from which it extends, and each of the second stopper holes extends at a second end therefore that is located farthest from the first window hole from which it extends to a position radially outside another of the plurality of second window holes.

6. The damper device according to claim 5 , wherein the first and second stopper holes are made in shape of circular arcs having pitch radii equal to each other.

Assignees

• Exedy Corp

Inventors

• Uehara Hiroshi

Classifications

• F16F15/137 Primary

  the elastic members consisting of two or more springs of different kinds, {e.g. elastomeric members and wound springs} · CPC title

• F16F15/1217 Primary

  Motion-limiting means, e.g. means for locking the spring unit in pre-defined positions (F16F15/1202, F16F15/1338 take precedence) · CPC title

• F16F15/1414 Primary

  Masses driven by elastic elements (F16F15/145, F16F15/1464 take precedence) · CPC title

• F16F15/123

  Wound springs {(F16F15/1213, F16F15/1216, F16F15/127 take precedence)} · CPC title