Articulated clinch joint for molded case circuit breaker

Patent metadata

Field	Value
Publication number	US-10580606-B2
Application number	US-201816199481-A
Country	US
Kind code	B2
Filing date	Nov 26, 2018
Priority date	Sep 28, 2015
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

A movable contact conductor assembly is provided. The movable contact arm assembly includes an elongated member with a distal tip, a first end, a medial portion, an actuator coupling second component, a primary pivot second component, a secondary pivot second component, a clinch joint second component, a second end, and a proximal tip. During an over-current event the movable contact arm assembly member generates a loop force. A loop force first portion is disposed on a first longitudinal side of the movable contact arm assembly member primary pivot second component, and, a loop force second portion is disposed on a second longitudinal side of the movable contact arm assembly member primary pivot second component.

First claim

What is claimed is:

1. A movable contact arm assembly for a circuit breaker assembly, the circuit breaker assembly including a housing assembly, a conductor assembly, and an operating mechanism, said housing assembly defining a substantially enclosed space, said conductor assembly including a fixed contact conductor assembly and a movable contact conductor assembly, said conductor assembly substantially disposed in said housing assembly enclosed space, said fixed contact conductor assembly including a fixed contact, said movable contact conductor assembly including a cross bar assembly and a conductive base conductor assembly, said cross bar assembly including a primary pivot first component and a secondary pivot first component, said conductive base conductor assembly including a clinch joint first component, said operating mechanism including an actuator coupling first component, said operating mechanism operatively coupled to said movable contact conductor assembly and structured to move a movable contact arm assembly between an open, first position and a closed, second position, said movable contact arm assembly comprising:
an elongated member including a distal tip, a first end, a medial portion, an actuator coupling second component, a primary pivot second component, a secondary pivot second component, a clinch joint second component, a second end, and a proximal tip;
wherein, during an over-current event, said movable contact arm assembly member generates a loop force;
wherein a loop force first portion is disposed on a first longitudinal side of said movable contact arm assembly member primary pivot second component, and, a loop force second portion is disposed on a second longitudinal side of said movable contact arm assembly member primary pivot second component;
wherein said loop force first portion has a greater longitudinal length than said loop force second portion; and
wherein at least one of said movable contact arm assembly member first end and said movable contact arm assembly member medial portion includes a conductive shunt.

2. A movable contact conductor assembly for a circuit breaker assembly, the circuit breaker assembly including a housing assembly, a conductor assembly, and an operating mechanism, said housing assembly defining a substantially enclosed space, said conductor assembly including a fixed contact conductor assembly substantially disposed in said housing assembly enclosed space, said fixed contact conductor assembly including a fixed contact, said operating mechanism including an actuator coupling first component, said operating mechanism operatively coupled to said conductor assembly and structured to move a movable contact arm assembly between an open, first position and a closed, second position, said movable contact conductor assembly comprising:
a cross bar assembly including a primary pivot first component and a secondary pivot first component;
a conductive base conductor assembly including a clinch joint first component;
a movable contact arm assembly including an elongated member including a distal tip, a first end, a medial portion, an actuator coupling second component, a primary pivot second component, a secondary pivot second component, a clinch joint second component, a second end, and a proximal tip;
said conductive base conductor assembly clinch joint first component engageably coupled to said movable contact arm assembly member clinch joint second component;
said cross bar assembly primary pivot first component pivotally coupled to said contact arm assembly body primary pivot second component;
said cross bar assembly secondary pivot first component pivotally coupled to said contact arm assembly body secondary pivot second component;
wherein, during an over-current event, said movable contact arm assembly member generates a loop force;
wherein a loop force first portion is disposed on a first longitudinal side of said movable contact arm assembly member primary pivot second component, and, a loop force second portion is disposed on a second longitudinal side of said movable contact arm assembly member primary pivot second component;
wherein said loop force first portion has a greater longitudinal length than said loop force second portion; and
wherein at least one of said movable contact arm assembly member first end and said movable contact arm assembly member medial portion includes a conductive shunt.

3. A circuit breaker assembly, the circuit breaker assembly comprising:
a housing assembly defining a substantially enclosed space;
a conductor assembly including a fixed contact conductor assembly and a movable contact conductor assembly;
said fixed contact conductor assembly substantially disposed in said housing assembly enclosed space and including a fixed contact;
an operating mechanism including an actuator coupling first component;
said operating mechanism operatively coupled to said conductor assembly and structured to move a movable contact arm assembly between an open, first position and a closed, second position;
said movable contact conductor assembly substantially disposed in said housing assembly enclosed space and including a cross bar assembly, a conductive base conductor assembly, and a movable contact arm assembly;
said cross bar assembly including a primary pivot first component and a secondary pivot first component;
said conductive base conductor assembly including a clinch joint first component;
said movable contact arm assembly including an elongated member including a distal tip, a first end, a medial portion, an actuator coupling second component, a primary pivot second component, a secondary pivot second component, a clinch joint second component, a second end, and a proximal tip;
said conductive base conductor assembly clinch joint first component engageably coupled to said contact arm assembly body clinch joint second component;
said cross bar assembly primary pivot first component pivotally coupled to said contact arm assembly body primary pivot second component;
said cross bar assembly secondary pivot first component pivotally coupled to said contact arm assembly body secondary pivot second component;
said operating mechanism actuator coupling first component coupled to said movable contact arm assembly member actuator coupling second component;
wherein, during an over-current event, said movable contact arm assembly member generates a loop force;
wherein a loop force first portion is disposed on a first longitudinal side of said movable contact arm assembly member primary pivot second component, and, a loop force second portion is disposed on a second longitudinal side of said movable contact arm assembly member primary pivot second component;
wherein said loop force first portion has a greater longitudinal length than said loop force second portion; and
wherein at least one of said movable contact arm assembly member first end and said movable contact arm assembly member medial portion includes a conductive shunt.

4. A movable contact arm assembly for a circuit breaker assembly, the circuit breaker assembly including a housing assembly, a conductor assembly, and an operating mechanism, said housing assembly defining a substantially enclosed space, said conductor assembly including a fixed contact conductor assembly and a movable contact conductor assembly, said conductor assembly substantially disposed in said housing assembly enclosed space, said fixed contact conductor assembly including a fixed contact, said movable contact conductor assembly including a cross bar assembly and a conductive base conductor assembly, said cross bar assembly including a primary pivot rod and a secondary pivot rod, said conductive base conductor assembly including a clinch joint first component, said operating mechanism including an actuator coupli

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Kozar Aaron Thomas
• Slepian Robert Michael

Classifications

• H01H71/525

  comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee · CPC title

• H01H71/43 Primary

  Electrodynamic release mechanisms · CPC title

• H01H2205/002

  fixed to operating part · CPC title

• H01H71/10 Primary

  Operating or release mechanisms · CPC title

• H01H3/222

  using electrodynamic repulsion · CPC title