Forcedly closing device in accident for elevator door

Abstract

Abstract PURPOSE:To prevent the spread of a fire in a building closing a boarding spot door by vertically moving a forcedly closing weight following the door in its opening and closing and lowering a receiving tool of the weight by a control in a fire center, in the case of a device forcedly closing the boarding spot door of an elevator. CONSTITUTION:A boarding spot gate 2, formed in a wall 1, is opened and closed by a door 3, and its one end is connected respectively to mounting parts 3a of the door 3 by a rope 5 while the other end is connected respectively to balance weights 6 through pulleys 4. Accordingly, the balance weight 6 vertically moves following the door 3 in its opening and closing. While a rope 8 is connected to the balance weight 6 through a pulley 7, rotatably supported adjacent to the pulley 4, and the pulley 4, and the other end of the rope 8 is connected to a receiving tool 9. In case of a fire, when an electromagnet 12 is energized by a control in a fire center, a supporting member 11 is swiveled and released from a weight 10, and by dropping it to be piled in the receiving tool 9 lowering it, the door 3 comes to forcedly close the boarding spot gate 2.

Inventors

• 👤 Yukiomi Mizuno
• 👤 幸臣 水野

Bibliographic Details