An overcenter locking mechanism for sliding transit doors with a secondary retention device.

A single-door control circuit for a train includes a first circuit for controlling a single door when the train is in a sleep state, and a second circuit for controlling a door of the train when the train is in a wake-up activated state. When the train is in the sleep state, the second circuit is not electrified, the first circuit works, a door control unit is electrified by a storage battery power supply, and the single-door control is triggered by an electric unlocking switch or a single-door button; and when the train is in the wake-up activated state, the first circuit is cut off, the second circuit is electrified, and under a condition that a cab on a local side is activated and the train is at a zero velocity, the single-door control is only triggered by activating the single-door button in the cab.

An overcenter locking mechanism for sliding transit doors with a secondary retention device.

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.

A vehicle door lock release mechanism includes a plate assembly coupled with a vehicle, sliding plates that slide in opposite directions, an elastic member coupled with the plate assembly, and electromagnets coupled with the plate assembly. One electromagnet may be energized to prevent movement of a first sliding plate while a second sliding plate may move responsive to a release cable being pulled. The second electromagnet may be energized to magnetically couple with and prevent movement of the second sliding plate once the second sliding plate reaches the second electromagnet. The elastic member may be stretched and store energy from the release cable being pulled while both the first and second electromagnets remain energized. The first electromagnet may be de-energized to permit movement of the first sliding plate and release the energy stored in the elastic member for opening a door of the vehicle.

The invention relates to a double-leaf vehicle door device comprising at least the following: two door leaves, each of which can be moved between an open position and a closed position in the form of a respective end position and into any intermediate position between the first open position and the first closed position, wherein a first movement of the first door leaf between the first open position and the first closed position is carried out without mechanically coupling the first door leaf to the second door leaf in contrast to a second movement of the second door leaf between the second open position and the second closed position, and a common locking device is provided which locks the first door leaf in the closed position when the first door leaf is located in the closed position and which locks the second door leaf in the closed position when the second door leaf is in the closed position. A pre-locking function is provided such that of the first door and the second door leaf, the door leaf which first reaches the closed position is held in the closed position at least until the other door leaf has also reached the closed position, and the locking device is additionally designed to only then lock or become capable of locking the first door leaf and the second door leaf.

At least one leaf of this door is equipped with a detection device comprising a mechanical detection device and a contactless sensor each capable of detecting a presence. The control circuit board comprises a control unit for movement of each leaf and a diagnostic unit, while means transfer, from the detection device in the direction of the diagnostic unit and the control unit, a first item of information representative of the activation state of the mechanical device, and a second item of information representative of the activation state of the contactless sensor. The diagnostic unit can identify a malfunction at least of the contactless detection device, when the first item of information has an active value while the second item of information has an inactive value. The invention allows redundancy to improve the availability of the detection device, while performing predictive maintenance for the operator, in particular a malfunction of the contactless sensor.