Elevator door restrictor
First Claim
1. In an elevator of the type having a car, an inner door mounted to the car and outer doors mounted to floor openings located at different floors to define floor zones, wherein the inner door registers with the outer doors when the car is disposed within one of the floor zones, the improvement comprising:
- a solenoid having a latch which is movable between a blocking position and a released positioned;
a striker for preventing the inner door from being opened when the latch is in the blockng position, and allowing the inner door to fully open when the latch is in the released position, the striker and the latch being mounted to the inner door and the car for movement relative to each other as the inner door moves relative to the car;
a ramp carried by the car which forces the latch to move to the releaed position when the inner door is being closed while the latch is in the blocking position; and
an electrical controller for causing the latch to move to the blocking position when the inner door is substantially open.
1 Assignment
0 Petitions
Accused Products
Abstract
An elevator is provided with a car and inner and outer doors. The inner door registers with one of the outer doors when the car is disposed within a floor zone. A solenoid on the car has a plunger for blocking the inner door from opening. Power will only be applied to the solenoid to move the plunger to a retracted position to allow the inner door to be fully opened when both the car is disposed within a floor zone and the inner doors are being opened by the main elevator controls. A floor zone sensor is mounted to the car for detecting when the elevator is disposed within one of the floor zones. A door sensor is also mounted to the car for detecting when the inner door is being opened by the main elevator controls. A controller operates the electric solenoid to lift the plunger from the extended position to the retracted position in response to receiving both a door data signal from the door sensor and a floor zone data signal from the floor zone sensor. In the event of a power loss, the plunger will strike a lift clip so that the inner door may close.
19 Citations
15 Claims
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1. In an elevator of the type having a car, an inner door mounted to the car and outer doors mounted to floor openings located at different floors to define floor zones, wherein the inner door registers with the outer doors when the car is disposed within one of the floor zones, the improvement comprising:
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a solenoid having a latch which is movable between a blocking position and a released positioned; a striker for preventing the inner door from being opened when the latch is in the blockng position, and allowing the inner door to fully open when the latch is in the released position, the striker and the latch being mounted to the inner door and the car for movement relative to each other as the inner door moves relative to the car; a ramp carried by the car which forces the latch to move to the releaed position when the inner door is being closed while the latch is in the blocking position; and an electrical controller for causing the latch to move to the blocking position when the inner door is substantially open. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In an elevator of the type having a car, an inner door mounted to the car and outer doors mounted to floor openings located at different floors to define floor zones, wherein the inner door registers with the outer doors when the car is disposed within one of the floor zones, the improvement comprising:
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an electric solenoid mounted to the car and having a plunger which is mounted adjacent to the inner door, the plunger having a blocking position wherein it moves downward from the solenoid and a released positioned wherein it is drawn upward into the solenoids; a striker mounted to the inner door for contacting the plunger while the inner door is being opened and the plunger is in the blocking position and preventing the inner door from being opened, and for allowing the inner door to fully open when the plunger is in the released position; a ramp on the striker which forces the plunger to move to the released position when the inner door is being closed and the plunger is in the blocking position; and an electrical controller for the plunger to move to the blocking position when the inner door is substantially open. - View Dependent Claims (9, 10)
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11. In an elevator of the type having a car, an inner door mounted to the car and outer doors mounted to floor openings located at different floors to define floor zones, wherein the inner door registers with the outer doors when the car is disposed within one of the floor zones, the improvement comprising:
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an electric solenoid mounted to the car and having a plunger which is mounted adjacent to the inner door, the plunger having a blocking position wherein it moves downward from the solenoid and a released position wherein it is drawn upward into the solenoid; a striker mounted to the inner door for contacting the plunger while the inner door is being opened and the plunger is in the blocking position and preventing the inner door from being opened, and for allowing the inner door to fully open when the plunger is in the released position; a ramp on the striker which forces the plunger to move to the released position when the inner door is being closed and the plunger is in the blocking position; floor zone sensing means for determining when the car is disposed within one of the floor zones, and for emitting a floor zone data signal in response thereto; and an electric controller operable in response to the floor zone data signal and the door data signal for automatically causing the plunger to move to the released position when the car stops at one of the floor zones.
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12. In an elevator of the type having a car, an inner door mounted to the car and outer doors mounted to floor opening located at different floors to define floor zones, wherein the inner door registers with the outer doors when the car is disposed within one of the floor zones, the improvement comprising:
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an electric solenoid mounted to the car and having a plunger which is mounted adjacent to the inner door, the plunger having a blocking position wherein it moves downward from the solenoid and a released positioned wherein it is drawn upward into the solenoid; a striker mounted to the inner door for preventing the inner door from being opened when the plunger is in the blocking position, and for allowing the inner door to fully open when the plunger is in the released position; a downwardly-inclied plate on the stker which forces the plunger to move to the released position when the plunger is in the blocking position and the inner door is being closed; floor zone sensing means for determining when the car is disposed within one of the floor zones, and for emitting a floor zone data signal in response thereto; an electric controller operable in response to the floor zone data signal for automatically moving the plunger to the released position when the car stops at one of the floor zones. - View Dependent Claims (13, 14, 15)
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Specification