Switching device for guiding and switching of load currents

Patent metadata

Field	Value
Publication number	US-11742165-B2
Application number	US-201917413959-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Dec 18, 2018
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A switching device for guiding and switching of load currents includes: a movable switching component having a first movable contact and a second movable contact; a first fixed contact and a second fixed contact; a supporting device for supporting the switching component; and a magnetic actuator. The first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact in a switched-on state of the switching component. The first movable contact is electrically separated from the first fixed contact and the second movable contact is electrically separated from the second fixed contact in a switched-off state of the switching component. The switching component is arranged such that the switching component moves between the switched-on state and the switched-off state by at least a rotational movement of the switching component and a translational movement of the supporting device.

First claim

The invention claimed is:

1. A switching device for guiding and switching of load currents, comprising:
a movable switching component having a first movable contact- and a second movable contact;
a first fixed contact and a second fixed contact;
a supporting device configured to support the switching component; and
a magnetic actuator,
wherein the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact in a switched-on state of the switching component,
wherein the first movable contact is electrically separated from the first fixed contact and the second movable contact is electrically separated from the second fixed contact in a switched-off state of the switching component,
wherein the switching component is arranged such that the switching component is configured to move between the switched-on state and the switched-off state by at least a rotational movement of the switching component and a translational movement of the supporting device,
wherein the supporting device and the magnetic actuator are configured such that the translational movement of the supporting device is caused by an activation of the magnetic actuator,
wherein the switching component has a bearing position at which the switching component is rotatably arranged,
wherein the switching component is mechanically coupled to the supporting device at a force application area of the switching component,
wherein a location of the force application area is different from a location of the bearing position,
wherein the switching component comprises an E-shaped component having a first outer limb, and a second outer limb, and a middle limb being arranged between the first outer limb and the second outer limb, the middle limb being longer than the first and the second outer limbs,
wherein the first movable contact is arranged at an end portion of the first outer limb and the second movable contact is arranged at an end portion of the second outer limb,
wherein the bearing position of the switching component is arranged at an end portion of the middle limb, and
wherein the force application area is arranged at a position of the middle limb between the bearing position and a virtual connecting line between the first movable contact and the second movable contact.

2. The switching device of claim 1 ,
wherein the switching component is configured as a lever such that the switching component performs the rotational movement around the bearing position, upon the magnetic actuator exerting a force on the force application area of the switching component.

3. The switching device of claim 2 ,
wherein the switching component is rotatably coupled to a holding device by a ball-and-socket joint placed at the bearing position of the switching component.

4. The switching device of claim 1 ,
wherein the force application area of the switching component is arranged in relation to the bearing position and a virtual connecting line between the first movable contact and the second movable contact such that a rotational movement of the force application area of the switching component is configured to cause a rotational movement of the first and second movable contact larger than the rotational movement of the force application area of the switching component.

5. The switching device of claim 1 , further comprising:
a common arc guiding rail for the first and the second movable contact,
wherein the common arc guiding rail is free of contact from with the switching component in the switched-on state of the switching component.

6. The switching device of claim 5 , further comprising:
a first electric arc extinguishing chamber; and
a second electric arc extinguishing chamber.

7. The switching device of claim 6 , further comprising:
a first pair of arc guiding rails arranged between the first electric arc extinguishing chamber and a first pair of the first movable contact- and the first fixed contact; and
a second pair of arc guiding rails arranged between the second electric arc extinguishing chamber and a second pair of the second movable contact- and the second fixed contact.

8. The switching device of claim 7 ,
wherein the first pair of the arc guiding rails comprises a first arc guiding rail portion arranged between the first movable contact and the first electric arc extinguishing chamber,
wherein the second pair of the arc guiding rails comprises a first arc guiding rail portion arranged between the second movable contact- and the second electric arc extinguishing chamber, and
wherein the first arc guiding rail portion of the first pair of the arc guiding rails and the first arc guiding rail portion of the second pair of the arc guiding rails are formed as a part of the common arc guiding rail.

9. The switching device of claim 8 ,
wherein the first arc guiding rail portion of the first pair of the arc guiding rails is formed as an extension of an extinguishing plate of the first electric arc extinguishing chamber, and
wherein the first arc guiding rail portion of the second pair of the arc guiding rails is formed as an extension of an extinguishing plate of the second electric arc extinguishing chamber.

10. The switching device of claim 6 ,
wherein the first electric arc extinguishing chamber and the second electric arc extinguishing chamber comprise at least a first portion of extinguishing plates and at least a second portion of extinguishing plates, and
wherein the first portion of the extinguishing plates is slanted towards the switching component in relation to the second portion of the extinguishing plates.

11. The switching device of claim 6 ,
wherein the first electric arc extinguishing chamber and the second electric arc extinguishing chamber respectively comprise a plurality of extinguishing plates, and
wherein the extinguishing plates are displaced or slanted against each other such that a respective side of the first and second electric arc extinguishing chamber is placed in parallel to an electric arc being curved in a magnetic blow field of the switching device in a running direction of the electric arc.

12. The switching device of claim 1 , further comprising:
a first terminal contact rail; and
a second terminal contact rail,
wherein the first fixed contact is placed on the first terminal contact rail- and the second fixed contact is placed on the second terminal contact rail-.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Friedrichsen Lutz
• Bausch Christoph
• Otte Julia
• Schroeder Kai
• Meissner Johannes
• Ruempler Christian
• Zacharias Albert

Classifications

• H01H50/16 Primary

  Magnetic circuit arrangements · CPC title

• H01H9/443

  using permanent magnets · CPC title

• H01H50/546

  for contactors having bridging contacts · CPC title

• H01H1/2075 Primary

  T-shaped bridge; bridging contact has lateral arm for mounting resiliently or on a pivot · CPC title

• H01H33/182

  using permanent magnets (H01H33/187 takes precedence) · CPC title