US 10,766,743 B2Granted

Elevator device

AssigneeMitsubishi Electric Corporation

InventorsNaohiro Shiraishi, Ken Miyakawa, Seiji Watanabe

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Abstract

In an elevator device, a lower portion safety device is installed in a lower portion of a car, and an upper portion safety device is installed in an upper portion of the car. A lower portion pull-up lever that activates the lower portion safety device when pulled up by a speed governor rope is provided in the lower portion safety device. An upper portion pull-up lever that activates the upper portion safety device when pulled up by the speed governor rope is provided in the upper portion safety device. A lower portion elastic body is provided between the lower portion pull-up lever and the speed governor rope. An upper portion elastic body is provided between the upper portion pull-up lever and the speed governor rope.

Claims4

Dependent claims

An elevator device comprising:

an ascending/descending body;
a lower portion safety device installed in a lower portion of the ascending/descending body;
an upper portion safety device installed in an upper portion of the ascending/descending body;
a speed governor rope that extends through a hoistway and performs a circulatory motion as the ascending/descending body ascends and descends;
a lower portion pull-up lever that is disposed at the lower portion safety device and activates the lower portion safety device when pulled up by the speed governor rope, the lower portion pull-up lever having two longitudinal ends, a first longitudinal end of the two longitudinal ends of the lower portion pull-up lever being pivotally attached to the lower portion safety device, and a second longitudinal end of the two longitudinal ends of the lower portion pull-up lever being free, except for a connection which links to a lower portion elastic body;
an upper portion pull-up lever that is disposed at the upper portion safety device and activates the upper portion safety device when pulled up by the speed governor rope, the upper portion pull-up lever having two longitudinal ends, a first longitudinal end of the two longitudinal ends of the upper portion pull-up lever being pivotally attached to the upper portion safety device, and a second longitudinal end of the two longitudinal ends of the upper portion pull-up lever being free, except for a connection which links to an upper portion elastic body;
and
a speed governor that monitors the ascending/descending body for travel at an excessive speed, and activates the lower portion safety device and the upper portion safety device by gripping the speed governor rope when a travel speed of the ascending/descending body reaches the excessive speed,
wherein:
a lower portion rope fixing member and an upper portion rope fixing member are fixed to the speed governor rope,
the lower portion elastic body is disposed between the lower portion rope fixing member and the lower portion pull-up lever, and
the upper portion elastic body is disposed between the upper portion rope fixing member and the upper portion pull-up lever.

9 more elements

An elevator device comprising:

an ascending/descending body;
a lower portion safety device installed in a lower portion of the ascending/descending body;
an upper portion safety device installed in an upper portion of the ascending/descending body;
a speed governor rope that extends through a hoistway and performs a circulatory motion as the ascending/descending body ascends and descends;
a lower portion pull-up lever that is disposed at the lower portion safety device and activates the lower portion safety device when pulled up by the speed governor rope;
an upper portion pull-up lever that is disposed at the upper portion safety device and activates the upper portion safety device when pulled up by the speed governor rope;
and
a speed governor that monitors the ascending/descending body for travel at an excessive speed, and activates the lower portion safety device and the upper portion safety device by gripping the speed governor rope when a travel speed of the ascending/descending body reaches the excessive speed,
wherein:
a lower portion rope fixing member and an upper portion rope fixing member are fixed to the speed governor rope,
a lower portion elastic body is disposed between the lower portion rope fixing member and the lower portion pull-up lever,
an upper portion elastic body is disposed between the upper portion rope fixing member and the upper portion pull-up lever,
a lower portion support arm is disposed on the lower portion rope fixing member,
an upper portion support arm is disposed on the upper portion rope fixing member,
the lower portion elastic body is disposed between the lower portion support arm and the lower portion pull-up lever, and
the upper portion elastic body is disposed between the upper portion support arm and the upper portion pull-up lever.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/304,791Filed 14 May 2014
Published: US 2017/0121148 A14 May 2017
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B66B 5/044
For detecting excessive speed: mechanical overspeed governors
B66B 5/18
Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well: and applying frictional…
B66B 5/22
And applying frictional retarding forces: by means of linearly-movable wedges
B66B 9/00
Kinds or types of lifts in, or associated with, buildings or other

Family

US 2017/0121148 A1Pre-grant publication · published 4 May 2017
US 10,807,832 B2Related patent
US 10,766,743 B2This patent

From the US filing history. Foreign family members aren’t listed.

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