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US 12,698,185 B2Granted
Resetting a safety actuator in an elevator system
AssigneeOtis Elevator Company
InventorJan Ruhnke
Life of this patent
Estimating the term…
Abstract
A method of resetting a safety actuator (52) in an elevator system. An elevator controller receives a signal to reset the safety actuator (52) and moves the elevator car upwards relative to the guide rail (106a) so as to release the safety brake (48). A safety board controller is instructed to operate an electromagnet (62) in the safety actuator (52) to pull a magnetic actuator pad (54′) laterally away from the guide rail (106a) to a reset position while the elevator car is moving upwards during the reset operation.
Claims14
A method of resetting a safety actuator (52) in an elevator system (100), wherein:
- the elevator system (100) comprises an elevator car (102) driven to move along a guide rail (106a, 106b), a safety brake (48) mounted to the elevator car (102) and operable to prevent movement of the elevator car (102) along the guide rail (106a, 106b), and a safety actuator (52) mounted to the elevator car (102), the safety actuator (52) comprising a magnetic actuator pad (54, 54′) moveable laterally relative to the guide rail (106a, 106b);
- the safety actuator (52) is mechanically coupled to the safety brake (48) and configured to trigger the safety brake (48) when a magnetic actuator pad (54, 54′) is pushed laterally against the guide rail (106a, 106b) to create relative movement between the safety brake (48) and the elevator car (102);
- and
- the safety actuator (52) comprises an electromagnet (62) operable to pull the magnetic actuator pad (54, 54′) laterally away from the guide rail (106a, 106b) when the electromagnet (62) is aligned with the magnetic actuator pad (54, 54′) during a reset operation;
- the method comprising:
- upon receiving a signal to reset the safety actuator (52), moving the elevator car (102) upwards relative to the guide rail (106a, 106b) so as to release the safety brake (48);
- and
- operating the electromagnet (62) to pull the magnetic actuator pad (54, 54′) laterally away from the guide rail (106a, 106b) to a reset position while the elevator car (102) is moving upwards during the reset operation.
5 more elements
An elevator system (100) comprising:
- an elevator car (102) moveable along a guide rail (106a, 106b);
- an elevator controller (120) arranged to drive movement of the elevator car (102) along the guide rail (106a, 106b);
- a safety brake (48) mounted to the elevator car (102) and operable to prevent movement of the elevator car (102) along the guide rail (106a, 106b);
- and
- a safety actuator (52) mounted to the elevator car (102), the safety actuator (52) comprising a magnetic actuator pad (54, 54′) moveable laterally relative to the guide rail (106a, 106b);
- wherein the safety actuator (52) is mechanically coupled to the safety brake (48) and configured to trigger the safety brake (48) when a magnetic actuator pad (54, 54′) is pushed laterally against the guide rail (106a, 106b) to create relative movement between the safety brake (48) and the elevator car (102);
- wherein the safety actuator (52) comprises an electromagnet (62) operable to pull the magnetic actuator pad (54, 54′) laterally away from the guide rail (106a, 106b) when the electromagnet (62) is aligned with the magnetic actuator pad (54, 54′) during a reset operation;
- wherein the elevator controller (120) is arranged, upon receiving a signal to reset the safety actuator (52), to move the elevator car (102) upwards relative to the guide rail (106a, 106b) so as to release the safety brake (48);
- and
- wherein the elevator controller (120) is arranged to send a signal to operate the electromagnet (62) to pull the magnetic actuator pad (54, 54′) laterally away from the guide rail (106a, 106b) to a reset position while the elevator car (102) is moving upwards during the reset operation.
7 more elements
Dependencies are inferred from the claim text.