Patent ID: 11858780
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. An elevator safety device, comprising:
a governor assembly and a transmission device associated with the governor assembly;
the governor assembly comprising:
a bracket;
a rope sheave rotatably mounted on the bracket;
a centrifugal mechanism associated with the rope sheave; and
a remote triggering device on a radial outer side of the centrifugal mechanism on the bracket, wherein when the centrifugal mechanism is triggered by the remote triggering device, the plurality of centrifugal members couple the rope sheave with a core ring, so that when the rope sheave rotates in a direction corresponding to a descent direction of the car, the core ring and the rocker arm connected to the core ring rotate, which drives the safety gear through the transmission device;
wherein, the transmission device comprises a first component and a second component connected to each other by a pivot pin and a vertically oriented elongated hole such that, in an initial stroke of the rocker arm rotation, the pivot pin first moves in the elongated hole until the pivot pin engages with an end of the elongated hole, and then the rotation of the rocker arm is transmitted to the safety gear, thereby triggering the safety gear to be in frictional contact with the elevator guide rail.