Back to results
US 6,860,161 B2Granted
Weight detector for elevator
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsShigeki Yamakawa, Kazuhiro Horizaki
Life of this patent
Estimating the term…
Abstract
The displacement of a shackle, which is coupled with a main rope hanging an elevator car, caused by loading of the car, is converted, through a wire, into the rotary motion of a pulley which has a substantially vertical rotating surface, and an acceleration sensor for detecting the angle of rotation of the pulley is fixedly secured to the pulley, so that the load of the car is detected from the angle of rotation of the pulley.
Claims11
A load detection apparatus for an elevator comprising:
- a shackle;
- a main rope suspending and vertically transporting an elevator car and coupled to the shackle;
- a pulley which has a substantially vertical rotating surface;
- and
- an acceleration sensor for detecting angle of rotation of the pulley, fixedly secured to the pulley, wherein the shackle is displaced in accordance with loading of the elevator car, and displacement of the shackle induces rotation of the pulley via a wire so that the loading of the car is detected from the angle of rotation of the pulley detected by the acceleration sensor.
2 more elements
Dependencies are inferred from the claim text.