Elevator apparatus
AssigneeMitsubishi Electric Corporation
InventorsSatoru Takahashi, Ken-Ichi Okamoto, Takaharu Ueda, Masunori Shibata
Life of this patent
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Abstract
In an elevator apparatus, a brake device stops a car from running. The brake device can adjust the magnitude of part of a total braking force generated at a time of emergency braking of the car. As an example of the brake device, the brake device has a nonadjustable brake portion for immediately generating a braking force without making an adjustment thereof at the time of emergency braking of the car, and an adjustable brake portion for generating a braking force while making an adjustment thereof at the time of emergency braking of the car.
Claims17
An elevator apparatus, comprising:
- a car;
- and
- a brake device configured to stop the car, and to adjust a magnitude of part of a total braking force generated at a time of braking of the car, the brake device including
- a first brake portion configured to generate a braking force immediately without making an adjustment of the braking force, and
- a second brake portion configured to generate a braking force while making an adjustment to the braking force, the second brake portion including
- a second brake shoe that is brought into contact with and away from a brake rotational body,
- a second braking spring for pressing the second brake shoe against the brake rotational body,
- a second brake coil for generating an electromagnetic force for opening the second brake shoe away from the brake rotational body against the second braking spring,
- a brake control portion for controlling the electromagnetic force generated by the second brake coil,
- a brake control switch provided between the second brake coil and a power supply, and
- a forcible braking switch configured to invalidate any adjustment of the braking force to forcibly generate the total braking force of the second brake portion, the forcible braking switch provided between the second brake coil and the power supply and connected in series to the brake control switch.
An elevator apparatus, comprising:
- a car;
- and
- a brake device configured to stop the car, and to adjust a magnitude of part of a total braking force generated at a time of braking of the car, the brake device including
- a first brake portion configured to generate a braking force immediately without making an adjustment of the braking force, and
- a second brake portion configured to generate a braking force while making an adjustment to the braking force, the second brake portion including
- a second brake shoe that is brought into contact with and away from a brake rotational body,
- a second braking spring for pressing the second brake shoe against the brake rotational body,
- a second brake coil for generating an electromagnetic force for opening the second brake shoe away from the brake rotational body against the second braking spring, and a brake control portion for controlling the electromagnetic force generated by the second brake coil, and
- a third brake coil for generating an electromagnetic force for opening the second brake shoe away from the brake rotational body against the second braking spring, and the third brake coil is immediately stopped from being supplied with a current.
Dependencies are inferred from the claim text.