An automatic door opening and closing system includes a distance measuring device measuring a distance between an external surface of a swing door of a vehicle and an object lying on a circumference of the swing door, a door lock device locking the swing door, a drive device opening and closing the swing door, a door opening operation input device receiving an operation to cancel the locking of the swing door and to open the swing door, and a control device controlling the door lock device and the drive device based on the distance measured in response to receiving the operation. The distance measuring device includes a plurality of distance sensors placed dispersively over the swing door, a measurement target by the distant measuring device including a whole of the external surface of the swing door.

A display case door includes a door frame, a motor, and a torque rod. The door frame extends about and is coupled to a panel assembly. The motor is coupled to the door frame. The torque rod is coupled to the door frame and configured to couple with an enclosure for a display case. When the door is installed in an opening of the enclosure for the display case, the motor is operable to open the display case door, and the torque rod is configured to close the display case door.

The present invention relates to a sectional lifting door system. When the system is in normal operation, a door operator drives a cable drum to wind or unwind a cable for lifting or lowering slats. During a process of lowering the slats, if the slats is stopped or slowed unexpectedly (e.g. the slats hit an obstacle below), the door operator is disconnected from a shaft automatically. At this time, even if the door operator is still activated, the shaft does not rotate, the cable drum does not unwind the cable so that a certain tension force can be maintained on the cable and that the cable is prevented from loosening from the drum, thereby preventing the slats from falling off. Also, it can avoid the situation that the weight of the slats is completely applied to the obstacle because the cable drum continuously unwinds the cable.

The present invention provides a door closer control system that includes a door closer having a rack and pinion mechanism connected to a pair of shafts with different length and a pair of springs. The shorter shaft is attached to the pinion of the door closer and will rotate in conjunction with the pinion as the door opens or closes. The shafts have correspondent gears connected to the shafts. The rotation of the first gear will be meshing with the second gear on the second shaft. Electronic sensors are placed on both sides of the door to detect a presence of an object and are activated by the movement of the solenoids. The movement of the solenoids cause a set of springs in the system to engage and disengage from a link to allow free motion of the door.

A device for controlling a door of a vehicle includes a drive unit that pivots the door between closed and open positions, wherein the closed and open positions define a pivoting range of the door. The device includes a control unit to control the drive unit. The device also includes a sensor unit that monitors the pivoting range. The sensor unit transmits a collision signal when an object is in the pivoting range while the drive unit is pivoting the door. The control unit transmits a switch-off signal to the drive unit if the control unit receives the collision signal.

A vehicle door apparatus includes: a moving object detector configured to detect a moving object approaching a door of a vehicle; a door opening operation detector configured to detect a door opening operation performed by an occupant in the vehicle; a door opening restriction unit configured to restrict opening of the door by the door opening operation when detecting approach of the moving object; and a door opening permission unit configured to permit opening of the door by the door opening operation when the door opening operation is detected a predetermined number of times in a state in which the opening of the door is restricted.

A door assembly includes a first door skin, a second door skin spaced apart from the first door skin and a door operator disposed between the first door skin and the second door skin. An arm extends from the door operator. The door operator includes a motor moving the arm to move the door between a closed position and an open position and between the open position and the closed position. A current sensor generates a current signal corresponding to the current to the motor. A position sensor in communication with the door arm generates a position signal corresponding to the position of the door relative to the frame. A controller communicates with the sensor and the motor. The controller controls a motor current to the motor in response to the current signal and the position signal.

A door assembly includes a first door skin, a second door skin spaced apart from the first door skin and a door operator disposed between the first door skin and the second door skin. An arm extends from the door operator. The door operator includes a motor moving the arm to move the door between a closed position and an open position and between the open position and the closed position. A current sensor generates a current signal corresponding to the current to the motor. A position sensor in communication with the door arm generates a position signal corresponding to the position of the door relative to the frame. A controller communicates with the sensor and the motor. The controller controls a motor current to the motor in response to the current signal and the position signal.

A vehicle includes: (a) a rotatable door including: a door stop assembly configured to arrest opening of the door; a rotatable handle; a haptic feedback assembly arranged to vibrate the handle; (b) processor(s) configured to simultaneously activate the door stop and haptic feedback assemblies. The haptic feedback assembly is disposed within the rotatable handle. The processor(s) are configured to: compute a time-to-collision, and run the haptic feedback assembly at a level based on the time-to-collision.

A method for inhibiting a vehicle side door from opening into an oncoming traffic lane includes sending a remote door open command to the vehicle and detecting if a location of the transmitting device is greater than a predetermined distance from the vehicle to verify safe conditions to execute the command. If the transmitting device is determined to be at a location greater than a predetermined distance from the vehicle to verify safe conditions then GPS and on-board compass information is used to identify which vehicle doors should be inhibited from fully opening in the traffic lane to prevent causing damage to the vehicle.