Switching unit for an electrical switching device

Patent metadata

Field	Value
Publication number	US-9275805-B2
Application number	US-201213707830-A
Country	US
Kind code	B2
Filing date	Dec 7, 2012
Priority date	Feb 9, 2012
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

A switching unit for an electrical switching device, in particular an electrical circuit breaker, is disclosed. The switching unit includes a switching lock with a switching mechanism and a rotor housing with a contact arm disposed therein for opening and closing contacts during a rotation of the rotor housing about a rotation axis. In an embodiment, at least one lever apparatus is functionally connected at its upper end by way of the switching mechanism and at its lower end by way of a connecting pin to a face of the rotor housing.

First claim

What is claimed is:

1. A switching unit for an electrical switching device, comprising:
a switching lock including a switching lock board, a switching mechanism and a rotor housing, the rotor housing including a contact arm disposed therein for opening and closing contacts during a rotation of the rotor housing about a rotation axis, the switching lock board being stationary during the rotation of the rotor housing; and
at least one lever apparatus, functionally connected at an upper end to the switching mechanism and functionally connected at a lower end by way of a connecting pin to a face of the rotor housing such that the at least one lever apparatus extends from the lower end to the upper end in a space that is between the switching lock board and the rotor housing, wherein at least one of the lower end of the at least one lever apparatus and the connecting pin includes at least one stop surface, configured to limit rotation of the rotor housing about the rotation axis at least in one direction by coming up against a stop of the switching lock board.

2. The switching unit of claim 1 , wherein the connecting pin is configured as a separate component from the at least one lever apparatus and the rotor housing.

3. The switching unit of claim 2 , wherein a pin holder is disposed on at least one face of the rotor housing, the pin holder being configured to accommodate the connecting pin.

4. The switching unit of claim 3 , wherein the at least one lever apparatus includes a passage at the lower end, configured to accommodate the connecting pin.

5. The switching unit of claim 2 , wherein the at least one lever apparatus includes a passage at the lower end, configured to accommodate the connecting pin.

6. The switching unit of claim 1 , wherein the connecting pin extends at least in segments along a pin axis, disposed parallel or essentially parallel to the rotation axis of the rotor housing.

7. The switching unit of claim 1 , wherein the connecting pin extends along a pin axis, disposed at a distance from the rotation axis of the rotor housing.

8. The switching unit of claim 1 , wherein the at least one lever apparatus includes two lever apparatuses, and wherein on each face of the rotor housing, one of the two lever apparatuses is respectively functionally connected, at an upper end by way of the switching mechanism and at a lower end by way of a connecting pin, to a face of the rotor housing.

9. The switching unit of claim 1 , wherein the connecting pin is configured in an integral manner with the rotor housing or with the at least one lever apparatus.

10. An electrical switching device, comprising at least one switching unit of claim 1 .

11. The electrical switching device of claim 10 , wherein the electrical switching device is a circuit breaker.

12. The switching unit of claim 1 , wherein the switching unit is for a circuit breaker.

13. The switching unit of claim 1 , wherein the switching lock board includes two parallel plates, between which the switching mechanism is arranged, and the stop includes two stop portions at same positions on each of the two parallel plates.

14. The switching unit of claim 1 , wherein the stop is a recessed portion of the switching lock board.

15. A switching unit for an electrical switching device, comprising:
a switching lock including a switching lock board, a switching mechanism and a rotor housing, the rotor housing including a contact arm disposed therein for opening and closing contacts during a rotation of the rotor housing about a rotation axis, the switching lock board being stationary during rotation of the rotor housing; and
at least one lever apparatus, functionally connected at an upper end to the switching mechanism and functionally connected at a lower end by way of a connecting pin to a face of the rotor housing such that the at least one lever apparatus extends from the lower end to the upper end in a space that is between the switching lock board and the rotor housing, wherein a pin holder is disposed on the face of the rotor housing, the pin holder being configured to accommodate the connecting pin such that the connecting pin does not penetrate an inner wall of the rotor housing.

16. The switching unit of claim 15 , wherein at least one of the lower end of the at least one lever apparatus and the connecting pin includes at least one stop surface, configured to limit rotation of the rotor housing about the rotation axis at least in one direction by coming up against a stop of the switching lock board.

Assignees

• Bunk Thomas
• Hierl Andreas
• Mayer Bernhard
• Pirker Siegfried
• Pohle Christian
• Siemens Ag

Inventors

• Bunk Thomas
• Hierl Andreas
• Mayer Bernhard
• Pirker Siegfried
• Pohle Christian

Classifications

• H01H3/46 Primary

  using rod or lever linkage, e.g. toggle · CPC title

• H01H3/04 Primary

  Levers (tumblers H01H23/14) · CPC title

• H01H73/045

  Bridging contacts · CPC title

• 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