Damper device

Patent metadata

Field	Value
Publication number	US-11815148-B2
Application number	US-202117322237-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	Jun 16, 2020
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

A damper device includes a damper unit and a torque limiter unit. The damper unit includes first and second plates each including a plurality of window portions, a hub flange including a plurality of window holes, and a stopper mechanism. The first plate includes an engaging portion and a fixing portion fixed to the second plate. The engaging portion and the fixing portion are disposed radially outside the plurality of window portions. The hub flange includes a protrusion disposed circumferentially between and radially outside adjacent two of the plurality of window holes. The stopper mechanism is configured to be actuated by contact of the protrusion with the engaging portion. A fixation member, by which the first plate and the torque limiter unit are fixed, is disposed circumferentially between adjacent two of the plurality of window portions as seen in a direction along a rotational axis.

First claim

What is claimed is:

1. A damper device provided between a power source-side member and an output-side member, the damper device comprising:
a damper unit coupled to the output-side member; and
a torque limiter unit configured to limit a torque transmitted between the power source-side member and the damper unit, wherein
the damper unit includes
first and second plates axially opposed to each other, the first plate including a plurality of window portions circumferentially aligned with each other and the second plate including a plurality of window portions circumferentially aligned with each other, with each window portion in the first plate being aligned with a corresponding window portion in the second plate to form a plurality of window-portion pairs,
a hub flange rotatable relative to the first and second plates, the hub flange including a flange disposed axially between the first and second plates, the flange including a plurality of window holes disposed in corresponding positions to the plurality of window-portion pairs, each of the window holes being entirely spaced radially inwardly from an outer peripheral edge of the hub flange such that the window holes have complete bounds with peripheries of the window holes constituting closed surfaces,
a plurality of elastic members configured to elastically couple the hub flange and the first and second plates in a rotational direction, the plurality of elastic members accommodated in the plurality of window-portion pairs and the plurality of window holes, and
a stopper mechanism configured to restrict relative rotation between the hub flange and the first and second plates to a range of a predetermined angle,

the torque limiter unit includes
an annular plate fixed at an inner peripheral part thereof to an outer peripheral part of the first plate by a fixation member,

the first plate includes an engaging portion and a fixing portion, the engaging portion disposed radially outside the plurality of window portions of the first plate, the engaging portion extending toward the second plate, the fixing portion extending radially outward from a distal end of the engaging portion, the fixing portion fixed to the second plate,
the hub flange includes a protrusion disposed circumferentially between and radially outside adjacent two of the plurality of window holes,
the stopper mechanism is configured to be actuated by contact of the protrusion with the engaging portion when the first and second plates are rotated relative to the hub flange at the predetermined angle, and
the fixation member is disposed circumferentially between adjacent two of the plurality of window-portion pairs as seen in a direction along a rotational axis.

2. The damper device according to claim 1 , wherein the second plate and the flange each include an assembling hole allowing the fixation member to axially penetrate therethrough.

3. The damper device according to claim 1 , wherein the torque limiter unit includes
first and second sandwiching plates disposed to sandwich the annular plate therebetween, the first and second sandwiching plates fixed to each other so as to be axially immovable, and
an urging member configured to urge a friction disc, the urging member disposed to be sandwiched together with the annular plate between the first and second sandwiching plates.

4. The damper device according to claim 3 , wherein the first and second sandwiching plates overlap in part the fixing portion as seen in the direction along the rotational axis.

5. The damper device according to claim 3 , wherein the friction disc includes a friction-disc fixing portion that is disposed radially inside of the fixing portion of the first plate.

6. The damper device according to claim 5 , wherein the friction-disc fixing portion is disposed circumferentially between adjacent two of the window portions of the first plate.

7. The damper device according to claim 5 , wherein the friction-disc fixing portion is radially disposed so as to overlap in part with the window portions of the first plate.

8. The damper device according to claim 3 , wherein an inner diameter of the first sandwiching plate is smaller than an outer diameter of each of the first and second plates of the damper unit.

Assignees

• Exedy Corp

Inventors

• Uehara Hiroshi

Classifications

• F16D7/025 Primary

  with flat clutching surfaces, e.g. discs · CPC title

• F16D3/12

  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D3/80) · CPC title

• F16F15/1292

  characterised by arrangements for axially clamping or positioning or otherwise influencing the frictional plates · CPC title

• F16F15/1297

  Overload protection, i.e. means for limiting torque · CPC title

• F16F15/12353

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