Cinch override mechanism for latch assembly
An override mechanism for a cinching latch assembly includes a claw rotatable between open and closed positions, the claw spring biased toward the opened position to allow opening of a latch. Also included is a cinch drive link rotatable between an override and non-override positions, the cinch drive link in operative contact with the claw in the non-override position and disengaged from the claw in the override position, wherein operative contact between the claw and the cinch drive link biases the cinch drive link toward the override position. Further included is a guide surface. Yet further included is a cinch override lever defining an opening, the bearing of the cinch drive link disposed within the opening and moveable within the opening. Also included is a cinch override pawl rotatable between an engaged condition and a disengaged condition, the engaged condition locking the cinch override lever.
1. An override mechanism for a cinching latch assembly comprising:
a claw rotatable between an opened position and a closed position, the claw spring biased toward the opened position to allow opening of a latch;
a cinch drive link rotatable between an override position and a non-override position, the cinch drive link in operative contact with the claw in the non-override position and disengaged from the claw in the override position, wherein operative contact between the claw and the cinch drive link biases the cinch drive link toward the override position;
a bearing extending from the cinch drive link;
a cinch override lever defining an aperture defined by an inner wall of the cinch override lever, the bearing of the cinch drive link disposed within the aperture and moveable within the aperture;
a cinch override pawl rotatable between an engaged condition with the cinch override lever and a disengaged condition with the cinch override lever, the engaged condition locking the cinch override lever to oppose movement of the cinch drive link to the override position, wherein the cinch override lever includes a tab engageable with a retention arm of the cinch override pawl in the non-override position of the cinch drive link to restrict movement of the cinch override lever, the tab disengaged with the retention arm in the override position of the cinch override lever; and
a cinch cable lever rotatably mounted about a first axis, the cinch drive link pivotably mounted to the cinch cable lever for rotation about a second axis, wherein rotation of the cinch cable lever about the first axis is actuated by a cable and wherein the first axis is offset from the second axis.
2. The override mechanism of claim 1 , wherein the claw and the cinch drive link are in operative contact via a claw drive lever that drives rotation of the claw, the cinch drive link in contact with a feature of the claw drive lever.
3. The override mechanism of claim 2 , wherein the feature of the claw drive lever that is in contact with the cinch drive link is a tooth.
4. The override mechanism of claim 2 , wherein contact between the claw drive lever and the cinch drive link imparts a force on the claw drive lever in direction that does not intersect with the axis of rotation of the cinch drive link.
5. The override mechanism of claim 1 , wherein movement of the cinch cable lever causes movement of the cinch drive link between a home position and a fully latched position.
6. The override mechanism of claim 1 , wherein the cinch override pawl is spring biased to rotate the cinch override pawl to bring the tab and the retention arm into engagement.
7. The override mechanism of claim 1 , further comprising at least one housing feature disposed proximate an end of the cinch drive link, the housing feature(s) guiding the cinch drive link into the non-override position.
8. The override mechanism as in claim 1 , wherein the cinch override lever is spring biased to rotate in a direction that opposes movement of the cinch drive link toward the override position.
9. The override mechanism of claim 8 , wherein the claw and the cinch drive link are in operative contact via a claw drive lever that drives rotation of the claw, the cinch drive link in contact with a feature of the claw drive lever.
10. The override mechanism of claim 9 , wherein the feature of the claw drive lever that is in contact with the cinch drive link is a tooth.
11. The override mechanism of claim 9 , wherein contact between the claw drive lever and the cinch drive link imparts a force on the claw drive lever in a direction that does not intersect with the axis of rotation of the cinch drive link.
12. The override mechanism of claim 8 , further comprising a cinch cable lever pivotably coupled to the cinch drive link, rotation of the cinch cable lever actuated by a cable.
13. The override mechanism of claim 12 , wherein the axis of rotation of the cinch cable lever and the cinch drive link are offset from each other.
14. The override mechanism of claim 13 , wherein movement of the cinch cable lever causes movement of the cinch drive link between a home position and a fully latched position.
15. The override mechanism of claim 8 , wherein movement of the bearing within a profile of the opening of the cinch override lever causes rotation of the cinch override lever.