Solid state circuit breaker button interlocking system

Patent metadata

Field	Value
Publication number	US-11657993-B2
Application number	US-202117492018-A
Country	US
Kind code	B2
Filing date	Oct 1, 2021
Priority date	Jul 3, 2019
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A multi-level feedback actuator assembly for a circuit breaker assembly including an interlock system. The interlock system for the multi-level feedback actuator assembly is structured to maintain the multi-level feedback actuator assembly, and elements thereof, in a safe configuration. The interlock system for the multi-level feedback actuator assembly includes an interlock assembly structured to configure the rotary solenoid and at least one of the first actuator or the second actuator in a safe configuration.

First claim

What is claimed is:

1. An interlock system for a circuit breaker assembly, the circuit breaker assembly being structured to have a use current selectively passed therethrough and including a housing assembly, a separable contact assembly, a trip assembly, and an operating mechanism, the separable contact assembly including a number of sets of separable contacts that are movable between an open, first position, and a closed second position, the operating mechanism being structured to move the number of sets of separable contacts between the first and second positions, the operating mechanism including an elongated crossbar that is structured to move between a first position and a second position corresponding to the first and second positions of the number of sets of separable contacts, said interlock system comprising:
a rotary solenoid;
an actuator assembly including a first actuator, a second actuator, and a linkage assembly;
said linkage assembly operatively coupled with said rotary solenoid, said first actuator, and said second actuator; and
an interlock assembly structured to configure said rotary solenoid and at least one of the first actuator and the second actuator in a safe configuration.

2. The interlock system of claim 1 wherein:
said rotary solenoid includes a rotating output shaft operatively coupled to said linkage assembly; and
said rotary solenoid output shaft being movable between a first position and a second position.

3. The interlock system of claim 2 wherein the trip assembly is structured to provide an overcurrent signal when an overcurrent condition is detected, and wherein
said first actuator includes a body;
said second actuator including a body;
said interlock assembly includes a rotating extension assembly, a shaft link, and said rotary solenoid;
said rotary solenoid is structured to be in one of an energized state and a de-energized state;
wherein, when said rotary solenoid is in said energized state, said rotary solenoid output shaft is structured to operatively engage elements to which the rotary solenoid output shaft is operatively coupled;
wherein, when said rotary solenoid is in said de-energized state, said rotary solenoid output shaft is structured to be operatively engaged by elements operatively coupled to said rotary solenoid output shaft;
said rotary solenoid being structured to receive said overcurrent signal from said trip assembly;
wherein, when said rotary solenoid receives said overcurrent signal, said rotary solenoid is structured to be energized and to move to said rotary solenoid output shaft to said first position;
said first actuator body including a first end and a second end;
said first actuator body second end including a rotational coupling and said interlock assembly rotating extension assembly;
said first actuator body structured to move over a path of travel;
said rotating extension assembly being rotatably coupled to said first actuator body second end;
said rotating extension assembly being movable between a first position, wherein said rotating extension assembly is structured to operatively engage said shaft link, and a second position, wherein said rotating extension assembly is structured to not operatively engage said shaft link;
said shaft link including a body with a first end, a middle portion, and a second end;
said shaft link body middle portion being fixed to said rotary solenoid output shaft wherein said shaft link is operatively coupled to said rotary solenoid output shaft and said rotary solenoid output shaft is operatively coupled to said shaft link;
said shaft link body second end being disposed in the first actuator body second end path of travel;
wherein, when said rotary solenoid is in said de-energized state, when said rotating extension assembly is in said first position, and, when said first actuator body moves over said path of travel, said rotating extension assembly operatively engages said shaft link body; and
wherein, when said when said rotary solenoid is in said energized state and moving toward said first position, said shaft link body operatively engages said rotating extension assembly and moves said rotating extension assembly to said second position.

4. The interlock system of claim 3 wherein:
said interlock assembly includes a rotating extension assembly, a shaft link, an interlock unit, and said rotary solenoid;
said first actuator body being structured to be rotatably coupled to said circuit breaker assembly housing assembly and to move between a first position and a second position;
said second actuator body structured to be rotatably coupled to said circuit breaker assembly housing assembly and to move between a first position and a second position;
said second actuator body being structured to be operatively coupled to said interlock unit;
said interlock unit being structured to move between a first configuration, wherein said interlock unit does not block movement of said first actuator body, and, a second configuration, wherein said interlock unit blocks movement of said first actuator body; and
wherein, when said second actuator body is in said second position, said interlock unit is in said second configuration.

5. The interlock system of claim 4 wherein:
said interlock unit includes a spring lever mounting, an interlock unit spring lever, a reversing lever, a blocking member, and a blocking member spring;
said first actuator including a body defining a blocking member cavity;
said second actuator body includes a first end;
said spring lever mounting including a body;
said spring lever mounting body being fixed to said second actuator body first end;
said interlock unit spring lever including a body having a first end and a second end;
said interlock unit spring lever body first end being fixed to said spring lever mounting body;
said interlock unit spring lever body second end being operatively coupled to said interlock unit reversing lever;
said interlock unit reversing lever including a body defining a rotational coupling, a first radial extension, and a second radial extension;
said interlock unit reversing lever body structured to be rotatably coupled to said circuit breaker housing assembly;
said interlock unit reversing lever body first radial extension being structured to be operatively engaged by said interlock unit spring lever body second end;
said interlock unit reversing lever body second radial extension being structured to be operatively coupled to said interlock unit blocking member;
said interlock unit blocking member including a body structured to be rotatably coupled to said circuit breaker housing assembly;
said interlock unit blocking member body including a first radial extension and a blocking lug;
said interlock unit blocking member body first radial extension being structured to be operatively engaged by said interlock unit reversing lever body second radial extension;
said interlock unit reversing lever body second radial extension being operatively coupled to said interlock unit blocking member first radial extension;
said interlock unit blocking member body blocking lug being structured to be selectively disposed in the path of said first actuator body;
wherein, when said second actuator body is in said first position, said interlock unit is in said first configuration with said interlock unit blocking member body blocking lug not being disposed in the path of said first actuator body; and
wherein, when said second actuator body is in said second position, said interlock unit is in said second configuration with said interlock unit blocking member body blocking lug being disposed in the path of said first actuator body.

6. The interlock system of claim 4 wherein:
said second actuator body is opera

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Gottschalk Andrew L
• Slepian Robert Michael

Classifications

• H01H71/2472

  with rotatable armatures · CPC title

• H01H71/04 Primary

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• H01H50/18

  Movable parts of magnetic circuits, e.g. armature · CPC title

• H01H47/001 Primary

  Functional circuits, e.g. logic, sequencing, interlocking circuits · CPC title

• H01H9/20

  Interlocking, locking, or latching mechanisms · CPC title