Opening/closing apparatus with lock
AssigneeNabtesco Corporation
InventorsShinji Ueda, Shusaku Torihara
Life of this patent
Estimating the term…
Abstract
Provided is an opening/closing apparatus with a lock capable of performing the opening/closing and closed lock of a sliding door by a single actuator and arbitrarily setting the timing of a lock operation. In the opening/closing apparatus with a lock, an electric motor is driven and the drive force of the electric motor is input to the sun gear of a planetary gear mechanism and output from the internal gear or the carrier. A pair of sliding doors are opened and closed by the drive force output from the internal gear. While the pair of sliding doors are at a fully closed position, the lock and lock-released states of a lock mechanism are switched by a lock restricting mechanism.
Claims11
An opening and closing apparatus with lock, comprising:
- a pair of sliding doors movable reciprocatingly with respect to a housing;
- a rack and pinion mechanism mounted to the pair of sliding doors;
- an actuator configured to drive rack and pinion mechanism;
- a planetary gear mechanism having an input portion into which a drive force of the actuator is input, and first and second output portions each capable of outputting the drive force;
- a locking mechanism mounted on the housing, wherein the locking mechanism is configured to lock the pair of sliding doors by constraining movement of locking members each fixed to corresponding one of the pair of sliding doors in response to outputs from the first and second output portions;
- and
- a lock restricting mechanism configured to restrict, based on an external signal, switching of the locking mechanism from a lock-released state to a locked state while the pair of sliding doors are at a fully closed position.
A door opening and closing apparatus for a railway vehicle, the door opening and closing apparatus comprising:
- a pair of sliding doors each having a drive mechanism for sliding of the doors between open and closed positions;
- an actuator operable to drive the sliding doors between the open and the closed positions thereof via the drive mechanisms of the doors;
- a pair of locking members each associated with a corresponding one of the pair of sliding doors;
- a locking mechanism for the pair of sliding doors having an unlocked configuration in which the locking members and the associated sliding door are free to be driven between the open and closed positions thereof and a locked configuration in which the locking members and the associated sliding doors are locked in the closed position;
- a transmission mechanism between the actuator and the drive mechanisms and having a single drive force input member which receives a drive force from the actuator;
- a first drive force output member of the transmission mechanism operatively connected to the drive mechanisms of the sliding doors for transmitting the drive force received by the single drive input member to the drive mechanisms of the sliding doors;
- a second drive force output member of the transmission mechanism operatively connected to the locking mechanism for transmitting the drive force received by the single drive input member to the locking mechanism;
- and
- a lock restricting mechanism that has a lock restraining state in which the lock restricting mechanism keeps the locking mechanism in the unlocked configuration allowing the first drive force output member to transmit the drive force to the drive mechanisms of the sliding doors, and a lock release state in which, the sliding doors are in the closed position and external signal indicates that a speed of the railway vehicle is greater than a predetermined speed, the second drive force output member transmits the drive force to the locking mechanism to shift the locking mechanism from the unlocked configuration to the locked configuration.
Dependencies are inferred from the claim text.