The locking mechanism is adapted to a door system having a door unit slidably mounted to a door frame to open and close by sliding longitudinally along the door frame. The locking mechanism includes: a pivoting member pivotally mounted to one of the door frame and the door unit for pivoting about a pivot axis, and a hook member spaced apart from the pivot axis such that the hook member can pivot about the pivot axis via the pivoting member; and a guide member secured to the other one of the door frame and the door unit, the guide member having a channel formed therein to receive the hook member when the pivoting member is moved toward the guide by said sliding of the door, and subsequently maintain engagement with the hook member.

A retention mechanism for a pair of bi-parting doors of a transit vehicle includes a first track connected to a first door of the pair; a second track connected to a second door of the pair; a first retention assembly connected to the transit vehicle and configured to retain the first track in the closed position; a second retention assembly connected to the transit vehicle and configured to retain the second track in the closed position; a first engagement member connected to the second track, the first engagement member being configured to engage the first retention assembly to cause the first retention assembly to move to retain the first track in the closed position when the second track is in the closed position; and a second engagement member connected to the first track, the second engagement member being configured to engage the second retention assembly to cause the second retention assembly to move to retain the second track in the closed position when the first track is in the closed position.

A door opening/closing device includes: an opening/closing bar attached to a door, which is actuated by a motor and is used for opening and closing the door; a door closing state detecting part configured to detect whether the door is in a closed state; a locking device configured to lock and unlock the door; a lock pin capable of being moved to a locked position or an unlocked position by the locking device; an engaging member attached to the opening/closing bar, which includes an engaging part configured to engage with the lock pin moved to the locked position; a first spring provided between the opening/closing bar and the engaging member; and a locking control unit configured to cause the locking device to lock the door when the closed state is detected by the door closing state detecting part.

A vehicle door locking device includes a switching portion capable of switching between a first state in which the switching portion makes contact with a door to inhibit the door from moving in an opening direction no less than a distance required for removing an object caught in the door, and a second state in which the movement of the door of no less than the distance is not inhibited. The switching portion has a cam that rotates according to an opening/closing operation of the door. The rotation of the cam by a predetermined angle or more is inhibited in the first state, and the rotation of the cam is allowed in the second state.

A hatch cover lock comprises a front member including a pair of flanges, a rear member positioned between the pair of flanges; a gap defined between front member and the rear member; a clamp defining a J-shaped cross-section in a plane normal to a length thereof, the clamp having one leg thereof disposed in the gap and having another leg thereof disposed parallel to an outer surface of the rear member and at a distance therefrom, a handle, a first pivotal connection between the handle and the front member, a gravity lock, a second pivotal connection between the gravity lock and the handle, and a weld-free connection between the main portion of the rear member and the main portion of the front member.

An isolation lock mechanism for a transit vehicle door includes a lock bracket configured to be connected to the transit vehicle door; a lock pin configured to be 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; 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. The linkage assembly is configured to be connected to an emergency release device such that operation of the emergency release device to unlock the transit vehicle door also actuates the linkage assembly to move the lock pin from the engaged position to the disengaged position.

The manual release mechanism described herein enables a passenger to attempt to manually open the transit door but delays opening until the vehicle is no longer moving. A motion transfer device (14) moves to an unlocking position of the door lock (10) only when the manual release mechanism is activated to release store energy in a mechanical energy storage device (40) and an electromechanical device (26) is de-energized to release the motion transfer device (14).

The manual release mechanism described herein enables a passenger to attempt to manually open the transit door, but delays opening until the vehicle is no longer moving. A motion transfer device (14) moves to an unlocking position of the door lock (10) only when the manual release mechanism is activated to store energy in a mechanical energy storage device (40), and an electromechanical device (26) is de-energized to release the motion transfer device (14).

A control apparatus includes a first controller which controls an operation of a door of a railway vehicle, a second controller capable of controlling the operation of the door, and a diagnosis tester. The diagnosis tester performs a diagnosis related to an abnormality in the second controller when performing a start process which accompanies turning on power of the control apparatus.

A door device with a locking mechanism includes an operation member that is operated to unlock a door body. When a power supply for a railroad car is normal, it is determined whether the door body is allowed to be opened by operating the operation member. The door body is unlocked only when it is determined that opening of the door body is allowed. Whereas when the power supply for the railroad car is in an abnormal state, the door body is unlocked by the locking mechanism by operating the operation member.