Breaker mechanism for an electrical circuit breaker and electrical circuit breaker with such a breaker mechanism

Patent metadata

Field	Value
Publication number	US-10580608-B2
Application number	US-201715666608-A
Country	US
Kind code	B2
Filing date	Aug 2, 2017
Priority date	Sep 8, 2016
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

A breaker mechanism for an electrical circuit breaker is disclosed, the breaker mechanism including a spring, a latching mechanism and an actuating element, with which a breaker shaft of the electrical circuit breaker is actuated for breaking (OFF position) or making (ON position) the electric current. In an embodiment, the actuating element is actuated in the direction of the ON position when making the electric current, and the spring is thereby tensioned. Further, the latching mechanism releases the energy of the spring for actuating the breaker shaft of the electrical circuit breaker when the ON position is reached.

First claim

What is claimed is:

1. A breaker mechanism for an electrical circuit breaker, the breaker mechanism comprising:
a spring;
a latching mechanism; and
an actuating element, configured to actuate a breaker shaft of the electrical circuit breaker for breaking, in an OFF position, or making, in an ON position, contact for electric current, the actuating element being configured to be actuated in a direction of the ON position when making contact for the electric current, and thereby tension the spring, and the latching mechanism being configured to release energy of the spring to actuate the breaker shaft of the electrical circuit breaker when the ON position is reached by the actuating element, wherein the latching mechanism is configured to be activated by coming into direct mechanical contact with the actuating element, wherein the spring is tensioned to its maximum amount and the latching mechanism is configured to release the energy of the spring to actuate the breaker shaft of the electrical circuit breaker only when the ON position is reached by the actuating element.

2. The breaker mechanism of claim 1 , wherein the actuating element is formed as a toggle lever or as a rotary lever.

3. An electrical circuit breaker comprising:
the breaker mechanism of claim 2 ; and
a breaker shaft, the breaker shaft being actuatable by the energy of the spring.

4. The electrical circuit breaker of claim 3 , wherein, in response to the actuating element reaching the ON position, the latching mechanism is configured to release the energy of the spring to actuate the breaker shaft of the electrical circuit breaker and the breaker shaft is configured to bring at least one moving contact into mechanical contact with a fixed contact.

5. The electrical circuit breaker of claim 4 , wherein the electrical circuit breaker is formed as a power circuit breaker.

6. The electrical circuit breaker of claim 3 , wherein the electrical circuit breaker is formed as a power circuit breaker.

7. An electrical circuit breaker comprising:
the breaker mechanism of claim 1 ; and
a breaker shaft, the breaker shaft being actuatable by the energy of the spring.

8. The electrical circuit breaker of claim 7 , wherein, in response to the actuating element reaching the ON position, the latching mechanism is configured to release the energy of the spring to actuate the breaker shaft of the electrical circuit breaker and the breaker shaft is configured to bring at least one moving contact into mechanical contact with a fixed contact.

9. The electrical circuit breaker of claim 8 , wherein the electrical circuit breaker is formed as a power circuit breaker.

10. The electrical circuit breaker of claim 7 , wherein the electrical circuit breaker is formed as a power circuit breaker.

11. An electrical circuit breaker comprising:
the breaker mechanism of claim 1 ; and
a breaker shaft, the breaker shaft being actuatable by the energy of the spring.

12. The electrical circuit breaker of claim 11 , wherein, in response to the actuating element reaching the ON position, the latching mechanism is configured to release the energy of the spring to actuate the breaker shaft of the electrical circuit breaker and the breaker shaft is configured to bring at least one moving contact into mechanical contact with a fixed contact.

13. The electrical circuit breaker of claim 12 , wherein the electrical circuit breaker is formed as a power circuit breaker.

14. The electrical circuit breaker of claim 11 , wherein the electrical circuit breaker is formed as a power circuit breaker.

15. The breaker mechanism of claim 1 , wherein a switching point of the breaker mechanism is arranged directly at the ON position.

16. The breaker mechanism of claim 1 , wherein the actuating element is configured to travel a path from an OFF position to the ON position to reach its switching point and the actuating element travels the entire path when tensioning the spring to the switching point.

17. A breaker mechanism for an electrical circuit breaker, the breaker mechanism comprising:
a spring;
a latching mechanism; and
an actuating element, configured to actuate a breaker shaft of the electrical circuit breaker for breaking, in an OFF position, or making, in an ON position, contact for electric current, the actuating element being configured to be actuated in a direction of the ON position when making contact for the electric current, and thereby tension the spring, and the latching mechanism being configured to release energy of the spring to actuate the breaker shaft of the electrical circuit breaker when the ON position is reached by the actuating element, wherein the actuating element is configured to travel a path from an OFF position to the ON position to reach its switching point and the actuating element travels the entire path when tensioning the spring to the switching point.

Assignees

• Siemens Ag

Inventors

• Bunk Thomas
• Pirker Siegfried
• Welzl Johannes

Classifications

• H01H71/52

  actuated by lever · CPC title

• H01H1/2058

  Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker · CPC title

• H01H3/3026

  in which the closing spring charges the opening spring or vice versa · CPC title

• H01H5/16

  with auxiliary means for temporarily holding parts until torsion member is sufficiently strained · CPC title

• H01H71/525

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