| 摘要 |
In an aspect, the invention is directed to a clutched device (such as, for example, a decoupler) that includes a clutch input member, a clutch output member, a wrap spring clutch. The wrap spring clutch has an overrun locking member thereon that is engageable with an overrun locking aperture in the output member so as to maintain a face at the helical end of the wrap spring clutch in engagement with a output member clutch drive face on the clutch output member. |
| 主权项 |
1. A clutched device, comprising:
a clutch input member (82, 402) having a radially inner face (94, 411); a clutch output member (32, 408) having a radially outer face (424); and a wrap spring clutch (80, 406) having a first helical end (86, 432) and a plurality of coils (90, 425), wherein the clutch further includes an overrun locking member (91, 428), wherein the clutched device is operable in a first mode wherein torque is transferred from the clutch input member into the wrap spring clutch and from a face (96, 434) at the first helical end of the wrap spring clutch into an output member clutch drive face (108, 436) on the clutch output member, and in a second mode wherein the clutch output device overruns the clutch input device, wherein, in the second mode, a first overrun drive surface (83, 460) on the overrun locking member (91, 428) engages a second overrun drive surface (85, 462) on the clutch output member which keeps the face at the first helical end of the wrap spring clutch substantially engaged with the output member clutch drive face on the clutch output member. |
