Elevator apparatus

An elevator apparatus comprising a car, a pair of guide rails, and guide devices mounted respectively on upper and lower portions of said car, said guide devices having guide members engaged with said guide rails so as to guide said car along said guide rails in a manner to hold sid car in a proper position;

• wherein each guide device of said guide devices comprises a resilient support member having a small spring constant supporting a guide member of said guide device in such a manner that said guide member is movable in a direction perpendicular to a plane of a guide rail engaged by said guide member;
• wherein an axis of suspension of said car is deviated from a position of a center of gravity of said car so as to cause, independent of a bend in said guide rail, a guide load, acting on a side surface of said guide rail via said guide member in a direction perpendicular to the plane of said guide rail, to include a deflected load acting on said guide rail in only direction at all times;
• and
• wherein said guide device further comprises an anti-deflected load generating device for generating an anti-deflected load in a direction to reduce the deflected load of the guide load caused by the deviation of the axis of suspension of said car from the position of the center of gravity of said car, the anti-deflected load generating device being disposed between said car and said guide rail.

An elevator apparatus comprising a car, a pair of guide rails, guide devices mounted respectively on upper and lower portions of said car, sid guide devices having guide members engaged with si guide rails so as to guide said car along said guide rails in a manner to hold said car in a proper position, a counterweight for said car, and a hoisting device having a sheave for driving said car and sid counterweight through a rope;

• wherein each guide member of said guide devices comprises a resilient support member having a small spring constant supporting a guide member of said guide device in such a manner that said guide member is movable in a direction perpendicular to a plane of a guide rail engaged by said guide member;
• wherein an axis of suspension of said car is deviated from a position of a center of gravity of said car in such a manner that an interval between the axis of suspension of said car and an axis of suspension of said counterweight is substantially equal to a diameter of said sheave, so as to cause, independent of a bend in said guide rail, a guide load, coating on a side surface of said guide rail valid said guide member in a direction perpendicular to the plane of said guide rail, to include a deflected load acting on said guide rail in only one direction at all times;
• and
• wherein said guide device further comprises an anti-deflected load generating device for generating an anti-deflected load in a direction to reduce the deflected load of the guide load caused by the deviation of the axis of suspension of said car from the position of the center of gravity of said car, the anti-deflected load generating device being disposed between said car and said guide rail.

A hydraulic elevator apparatus comprising a car, a pair of guide rails, guide devices mounted respectively on upper and lower portions of said car, said guide devices having guide members engaged with sid guide rails so as to guide said car along said guide rails in a manner to hold said car in a proper position, and a hydraulic jack for driving said car through a rope;

• wherein each guide device of said guide devices comprises a resilient support member having a small spring constant supporting a guide member of said guide device in such a manner that said guide member is movable in a direction perpendicular to a plane of a guide engaged by said guide member;
• wherein said car is suspended by said rope at a position rearward of a rear of said car, so as to cause, independent of a bend in said guide rail, a guide load, acting on a side surface of said guide rail via said guide member in a direction perpendicular to the plane of said guide rail, to include a deflected load acting on said guide rail in only one direction at all times;
• and
• wherein said guide device further comprises an anti-deflected load generating device for generating an anti-deflected load in a direction to reduce the deflected load of the guide load caused by the suspension of said car at the position rearward of the rear of said car, the anti-deflected load generating device being disposed between said car and said guide rail.