US 11,685,632 B2
Elevator buffering device and elevator system
DaYu Chen, Shanghai (CN); and Shaohong Jiang, Shanghai (CN)
Assigned to OTIS ELEVATOR COMPANY, Farmington, CT (US)
Filed by Otis Elevator Company, Farmington, CT (US)
Filed on Nov. 13, 2020, as Appl. No. 17/97,095.
Claims priority of application No. 202010351402.1 (CN), filed on Apr. 28, 2020.
Prior Publication US 2021/0331895 A1, Oct. 28, 2021
Int. Cl. B66B 5/28 (2006.01); B66B 5/00 (2006.01)
CPC B66B 5/282 (2013.01) [B66B 5/0056 (2013.01); B66B 5/288 (2013.01)] 9 Claims
OG exemplary drawing
 
1. The An elevator buffering device, comprising:
a multi-stage buffer including: a body bracket; and a plurality of buffering elements mounted on the body bracket; wherein each of the buffering elements is at different heights when they are driven to operating positions in a vertical direction;
a drive mechanism including: a power source for powering the drive mechanism; and
a telescopic push rod pivotally connected to the body bracket; and
a control element for controlling a telescopic length of the telescopic push rod of the drive mechanism so that one of the plurality of buffering elements on the body bracket is driven to the operating position;
wherein the plurality of buffering elements include a first buffering element mounted at a first end of the body bracket and a second buffering element mounted at a second end of the body bracket, when the first buffering element or the second buffering element is driven to the operating position, they are above the body bracket in the vertical direction;
wherein the multi-stage buffer further comprises a mounting base, the first end of the body bracket is pivotally connected to the mounting base;
wherein the power source is disposed proximate to the second end of the body bracket, a first end of the telescopic push rod is pivotally connected to the power source, and a second end of the telescopic push rod is pivotally connected to the first end of the body bracket; wherein the second end of the telescopic push rod remains higher than the first end of the telescopic push rod in the vertical direction within a telescoping stroke of the telescopic push rod.