Elevator system
AssigneeMitsubishi Electric Corporation
InventorKazuaki Koide
Life of this patent
Estimating the term…
Abstract
An elevator system is capable of detecting that a car has overshot a position where a limit switch operates. The elevator system includes: a limit switch; a conductive wire provided along a guide rail guiding movement of a counterweight; a contact being attached to the counterweight and moreover configured to come into contact with the conductive wire in a case where the counterweight is disconnected from the guide rail; an overshoot detection contact being attached to the conductive wire and disposed at a position that allows the overshoot detection contact to come into contact with the contact in the case where the car moves past a position where the limit switch operates; and an overshoot detection unit configured to detect that the contact is in contact with the overshoot detection contact.
Claims4
An elevator system comprising:
- a limit switch provided in an upper portion or a lower portion of a hoistway, the limit switch configured to operate in a case where a car overshoots a terminal floor;
- a conductive wire provided along a guide rail guiding movement of a counterweight;
- a contact having conductivity and being attached to the counterweight, the contact configured to come into contact with the conductive wire in a case where the counterweight is disconnected from the guide rail;
- an overshoot detection contact having conductivity and being attached to the conductive wire in the upper portion or the lower portion of the hoistway on a side opposite to the limit switch, the overshoot detection contact being disposed at a position that allows the overshoot detection contact to come into contact with the contact in a case where the car moves past a position where the limit switch operates;
- and
- an overshoot detection unit provided in a control panel electrically connected to the conductive wire, the overshoot detection unit configured to detect that the contact is in contact with the overshoot detection contact.
Dependencies are inferred from the claim text.