Remote triggering device, overspeed governor assembly and elevator system

An overspeed governor assembly, comprising:

• a fixed bracket;
• a sheave mounted on the fixed bracket;
• a centrifugal mechanism mounted on the sheave and rotating with the sheave;
• an overspeed protection switch on a radially outer side of the centrifugal mechanism;
• and
• a remote triggering device on the radially outer side of the centrifugal mechanism and adjacent to the overspeed protection switch, the remote triggering device comprising:
• an actuator seat mounted on the fixed bracket and rotatable between a first position and a second position;
• an actuator disposed on the actuator seat and having an action end movable between a retracted position and an extended position, wherein the actuator includes an electromagnet;
• and
• a reset lever extending from the actuator seat;
• wherein in a case that the centrifugal mechanism of the overspeed governor assembly rotates in a first direction corresponding to ascending of an elevator car, when the action end of the actuator moves to the extended position, the centrifugal mechanism of the overspeed governor assembly contacts the action end of the actuator and drives the actuator seat to rotate from the first position to the second position, and the reset lever rotates with the actuator seat, and wherein in the second position the reset lever contacts the overspeed protection switch so that the overspeed protection switch is returned to an untriggered position.

An overspeed governor assembly, comprising:

• a fixed bracket;
• a sheave mounted on the fixed bracket;
• a centrifugal mechanism mounted on the sheave and rotating with the sheave;
• an overspeed protection switch on a radially outer side of the centrifugal mechanism;
• and
• a remote triggering device on the radially outer side of the centrifugal mechanism and adjacent to the overspeed protection switch, the remote triggering device comprising:
• an actuator seat mounted on the fixed bracket and rotatable between a first position and a second position;
• an actuator disposed on the actuator seat and having an action end movable between a retracted position and an extended position;
• and
• a reset lever extending from the actuator seat;
• wherein in a case that the centrifugal mechanism of the overspeed governor assembly rotates in a first direction corresponding to ascending of an elevator car, when the action end of the actuator moves to the extended position, the centrifugal mechanism of the overspeed governor assembly contacts the action end of the actuator and drives the actuator seat to rotate from the first position to the second position, and the reset lever rotates with the actuator seat, and wherein in the second position the reset lever contacts the overspeed protection switch so that the overspeed protection switch is returned to an untriggered position;
• wherein the overspeed protection switch comprises:
• a triggering member, wherein the triggering member is in a untriggered position when the overspeed governor assembly is in normal operation, and the triggering member is capable of rotating to a triggering position from the untriggered position when toggled by the centrifugal mechanism of the overspeed governor assembly in case of overspeed of the overspeed governor assembly;
• and
• at least one protrusion connected to the triggering member and rotating with the triggering member;
• wherein the reset lever acts on one of the at least one protrusion during the rotation, so as to drive the triggering member to return from the triggering position to the untriggered position.