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US 12,264,513 B2Granted
Integrated primary lock and isolation lock emergency release mechanism
AssigneeWestinghouse Air Brake Technologies Corporation
InventorDaniel Filion
Life of this patent
Estimating the term…
Abstract
A lock mechanism includes a release cam assembly configured to be articulated around an axis of a spindle, an isolation lock unlock linkage, a primary lock unlock linkage, and a door panel suspension. Responsive to an emergency release being pulled, the isolation lock unlock linkage and the primary lock unlock linkage are configured to be sequentially actuated in a sequence that includes a) unlocking an isolation lock when the isolation lock previously was in a locked position, b) unlocking a primary door lock by rotational stroke motion of the spindle, and c) rotating the spindle in an open direction.
Claims13
A lock mechanism comprising:
- an isolation lock comprising a lever arm body and one or more tenons interconnected with the lever arm body, the one or more tenons configured to pivot into and out of one or more mortises of one or more door panel suspensions to engage and disengage the isolation lock to control isolation locking of a door, the isolation lock further comprising a lock shaft configured to rotate in a first rotational direction to engage the isolation lock, the lock shaft configured to rotate in a second rotational direction to disengage the isolation lock;
- a slide plate interconnected with the lock shaft and configured to move in opposite linear directions as driven by the lock shaft motion in the first and second rotational directions;
- and
- a release cam interconnected with the lever arm body of the isolation lock and with the slide plate, the release cam configured to be rotated around a spindle axis of a spindle to sequentially pivot the lever arm body to pivot the one or more tenons out of the one or more mortises, and at least partially synchronously move the slide plate to rotate the lock shaft of the isolation lock to disengage the isolation lock, wherein the isolation lock also includes a tenon shaft to which the one or more tenons are coupled and configured to pivot about an axis of the tenon shaft, the lever arm body of the isolation lock coupled with the tenon shaft and including a first arm and a second arm on opposite sides of the tenon shaft.
1 more element
A lock mechanism comprising:
- an isolation lock comprising a lever arm body and one or more tenons interconnected with the lever arm body, the one or more tenons configured to pivot into and out of one or more mortises of one or more door panel suspensions to engage and disengage the isolation lock to control isolation locking of a door, the isolation lock further comprising a lock shaft configured to rotate in a first rotational direction to engage the isolation lock, the lock shaft configured to rotate in a second rotational direction to disengage the isolation lock;
- a slide plate interconnected with the lock shaft and configured to move in opposite linear directions as driven by the lock shaft motion in the first and second rotational directions;
- a release cam interconnected with the lever arm body of the isolation lock and with the slide plate, the release cam configured to be rotated around a spindle axis of a spindle to sequentially pivot the lever arm body to pivot the one or more tenons out of the one or more mortises, and at least partially synchronously move the slide plate to rotate the lock shaft of the isolation lock to disengage the isolation lock;
- and
- an isolation lock synchronizer lever having a pivot end and an opposite cantilevered end, the isolation lock synchronizer lever configured to rotate around the pivot end responsive to the cantilevered end engaging the one or more door panel suspensions, wherein the cantilevered end of the isolation lock synchronizer lever is positioned to block rotation of the lever arm body of the isolation lock and prevent the one or more tenons from pivoting into the one or more mortises responsive to the cantilevered end not engaging the one or more door panel suspensions.
2 more elements
A lock mechanism comprising:
- an isolation lock comprising a lever arm body and one or more tenons interconnected with the lever arm body, the one or more tenons configured to pivot into and out of one or more mortises of one or more door panel suspensions to engage and disengage the isolation lock to control isolation locking of a door, the isolation lock further comprising a lock shaft configured to rotate in a first rotational direction to engage the isolation lock, the lock shaft configured to rotate in a second rotational direction to disengage the isolation lock;
- a slide plate interconnected with the lock shaft and configured to move in opposite linear directions as driven by the lock shaft motion in the first and second rotational directions;
- a release cam interconnected with the lever arm body of the isolation lock and with the slide plate, the release cam configured to be rotated around a spindle axis of a spindle to sequentially pivot the lever arm body to pivot the one or more tenons out of the one or more mortises, and at least partially synchronously move the slide plate to rotate the lock shaft of the isolation lock to disengage the isolation lock;
- and
- a primary lock having a drive nut and fork assembly with a first portion interconnected with a first door panel suspension of the one or more door panel suspensions and a second portion interconnected with a second door panel suspension, the primary lock further comprising a release lever collar disposed around and fixed to the spindle and including a pin,
- wherein the release cam includes an elongated rod configured to move around the spindle axis while the releaseable cam is rotated, the elongated rod of the release cam positioned to engage the pin of the release lever collar and rotate the drive nut and fork assembly along a first segment of a hollow path to unlock the primary lock.
3 more elements
A lock mechanism comprising:
- an isolation lock comprising a lever arm body and one or more tenons interconnected with the lever arm body, the one or more tenons configured to pivot into and out of one or more mortises of one or more door panel suspensions to engage and disengage the isolation lock to control isolation locking of a door, the isolation lock further comprising a lock shaft configured to rotate in a first rotational direction to engage the isolation lock, the lock shaft configured to rotate in a second rotational direction to disengage the isolation lock;
- a slide plate interconnected with the lock shaft and configured to move in opposite linear directions as driven by the lock shaft motion in the first and second rotational directions;
- and
- a release cam interconnected with the lever arm body of the isolation lock and with the slide plate, the release cam configured to be rotated around a spindle axis of a spindle to sequentially pivot the lever arm body to pivot the one or more tenons out of the one or more mortises, and at least partially synchronously move the slide plate to rotate the lock shaft of the isolation lock to disengage the isolation lock, wherein the release cam assembly includes an idler bearing housing fixed to a vehicle structure with a center hollow section that is concentric with the axis of the spindle, the release cam assembly having an arcuate groove to limit rotational motion of the release cam.
1 more element
Dependencies are inferred from the claim text.