Back to results
US 11,767,689 B2Granted
Lock mechanism and door assembly
AssigneeWestinghouse Air Brake Technologies Corporation
InventorGunneet Singh
Life of this patent
Estimating the term…
Abstract
A lock mechanism is provided for use with a door assembly. The lock mechanism includes a lock bracket configured to connect to a door or hatch; a lock pin can be selectively moved between an engaged position in which the lock pin engages the lock bracket and a disengaged position in which the lock pin does not engage the lock bracket; and a linkage assembly connected to the lock pin and configured to be actuated to reversibly move the lock pin between the engaged position and the disengaged position, and a door or hatch release device can switch the lock pin from the engaged position to the disengaged position if the door or hatch release device is actuated after the linkage assembly has moved the lock pin into the engaged position.
Claims18
A lock mechanism, comprising:
- a lock bracket configured to connect to a door or hatch;
- a lock pin configured to be linearly moved between an engaged position in which the lock pin engages the lock bracket, and a disengaged position in which the lock pin does not engage the lock bracket;
- a linkage assembly connected to the lock pin and configured to be actuated to reversibly move the lock pin between the engaged position and the disengaged position;
- a release device configured to switch the lock pin from the engaged position to the disengaged position if the release device is actuated after the linkage assembly has moved the lock pin into the engaged position, wherein the linkage assembly is configured to be switched between an activated state in which operation of the release device actuates the linkage assembly, and a deactivated state in which operation of the release device does not actuate the linkage assembly;
- and
- a mask plate and a pivot shaft rotatably connecting the mask plate to a journal bearing, wherein the mask plate is pivotable on the pivot shaft between a blocking position in which the mask plate is disposed in a linear path of the lock pin to prevent the lock pin from moving to the engaged position, and a releasing position in which the mask plate is disposed away from the linear path of the lock pin.
3 more elements
A door assembly for a vehicle having a door opening formed in or defined by a wall of the vehicle, the door assembly comprising:
- a door operator system configured to move at least one door along the door opening between open and closed positions;
- a lock mechanism configured to selectively lock the at least one door, the lock mechanism comprising:
- a lock bracket connected to the door;
- a lock pin configured to be linearly moved between an engaged position in which the lock pin is extended to engage the lock bracket, and a disengaged position in which the lock pin is withdrawn from the lock bracket;
- a journal bearing that supports linear motion of the lock pin between the engaged position and the disengaged position;
- a linkage assembly connected to the lock pin and configured to be actuated to reversibly move the lock pin between the engaged position and the disengaged position;
- and
- a release device configured to disengage the lock mechanism and thereby to unlock the at least one door.
5 more elements
An isolation lock mechanism for a transit vehicle door, the isolation lock mechanism comprising:
- a lock bracket configured to be connected to the transit vehicle door;
- a lock pin configured to be linearly moved between an engaged position in which the lock pin is extended to engage the lock bracket, and a disengaged position in which the lock pin is withdrawn from the lock bracket;
- a journal bearing that supports linear motion of the lock pin between the engaged position and the disengaged position;
- and
- a linkage assembly connected to the lock pin and configured to be actuated to move the lock pin between the engaged position and the disengaged position, wherein the linkage assembly is configured to be connected to a release device such that operation of the release device actuates the linkage assembly to move the lock pin from the engaged position to the disengaged position, wherein the linkage assembly comprises:
- a first arm configured to be connected to the release device;
- a second arm connected to the first arm;
- a rotating shaft connected to the second arm;
- a cam fixedly connected to the rotating shaft;
- and
- a lever rotatably connected to the cam and the lock pin, wherein the second arm is connected to the first arm such that movement of the first arm due to operation of the release device causes the second arm to rotate about a connection between the second arm and the rotating shaft, which causes rotation of the rotating shaft and the cam, wherein rotation of the cam causes rotation of the lever, and rotation of the lever causes linear motion of the lock pin between the engaged and disengaged positions.
8 more elements
A lock mechanism, comprising:
- a lock bracket configured to connect to a door or hatch;
- a lock pin configured to be linearly moved between an engaged position in which the lock pin engages the lock bracket, and a disengaged position in which the lock pin does not engage the lock bracket;
- a linkage assembly connected to the lock pin and configured to be actuated to reversibly move the lock pin between the engaged position and the disengaged position;
- a release device configured to switch the lock pin from the engaged position to the disengaged position if the release device is actuated after the linkage assembly has moved the lock pin into the engaged position,
- wherein the linkage assembly comprises:
- a first arm configured to be connected to the release device;
- a second arm connected to the first arm, wherein the first arm is slotted and is connected to the second arm by a linkage fastener configured to slide with respect to the first arm;
- a rotating shaft connected to the second arm;
- a cam fixedly connected to the rotating shaft;
- and
- a lever rotatably connected to the cam and the lock pin,
- wherein the second arm is connected to the first arm such that movement of the first arm due to operation of the release device causes the second arm to rotate about a connection between the second arm and the rotating shaft, which causes rotation of the rotating shaft and the cam, rotation of the cam causes rotation of the lever, and rotation of the lever moves the lock pin linearly between the engaged position and the disengaged position.
9 more elements
Dependencies are inferred from the claim text.