Rotor for an electric switch

Patent metadata

Field	Value
Publication number	US-9330859-B2
Application number	US-201414332470-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Aug 29, 2013
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

A rotor is disclosed for an electric switch. In an embodiment, the rotor includes a rotor housing and a rotatably mounted contact link, which has two movable contacts. In an embodiment, by rotation of the rotor, the two movable contacts are configured to interact with two stationary contacts of an electric switch so as to close or open a circuit. Further, the rotatably mounted contact link is mounted movably in the rotor housing in a direction perpendicular to the direction of the contact link in its closing position.

First claim

What is claimed is:

1. A rotor for an electric switch, comprising:
a rotor housing;
a rotatably mounted contact link, including two movable contacts, the two movable contacts being, by rotation of the rotor, configured to interact with two stationary contacts of an electric switch so as to close or open a circuit, and the rotatably mounted contact link being movably mounted in the rotor housing in a direction perpendicular to a direction of the contact link in its closing position;
a first plate in an interior of the rotor housing, the first plate being arranged substantially parallel to the contact link;
two pairs of first and second spring pins; and
two pairs of first and second springs, wherein first ends of the respective spring pairs are fastened on the first spring pins, wherein the first spring pins rest on the contact link and the first plate, wherein second ends of the respective spring pairs are fastened on the second spring pins, and the second spring pins on the first plate, with the result that, in the closing position of the rotor, a minimum contact pressure of the movable contacts of the contact link on the stationary contacts is ensured, and wherein the second spring pins are movably mounted in the rotor housing.

2. The rotor of claim 1 , wherein the rotatably mounted contact link is mounted movably in the rotor housing in a direction perpendicular to a rotary spindle of the contact link.

3. The rotor of claim 1 , further comprising:
a second plate in an interior of the rotor housing, the second plate being arranged substantially parallel to the contact link and to the first plate, wherein the first spring pins rest on the contact link and the first and second plates, and wherein the second ends of the respective spring pairs are fastened on the second spring pins and the second spring pins on the first and second plates.

4. The rotor of claim 1 , wherein the two pairs of first and second springs are in the form of tension springs.

5. The rotor of claim 1 , wherein the two plates and the contact link include a central cutout, through which a guide pin, acting as rotary spindle of the rotor, is guided.

6. The rotor of claim 1 , wherein the guide pin acts as a rotary spindle of the rotor and comprises a first rotor pin, a second rotor pin and a centering spring.

7. The rotor of claim 6 , wherein the first rotor pin and the second rotor pin are connected to the rotor housing, and the centering spring passes between the two rotor pins.

8. The rotor of claim 7 , wherein the contact link is held by the centering spring.

9. The rotor of claim 6 , wherein the centering spring is in the form of a tension spring with a coiled spring body without any spring eyelets.

10. The rotor of claim 9 , wherein a spring constant of the centering spring is designed in to support a mass of the contact link in order to center the contact link in the rotor housing.

11. The rotor of claim 10 , wherein the spring constant of the centering spring is designed such the centering spring does not provide a high degree of force in opposition to asymmetry balancing of the contact link.

12. The rotor of claim 6 , wherein the first rotor pin and the second rotor pin are connected to one another via a fixed central part.

13. The rotor of claim 12 , wherein a diameter of the centering spring is so great in comparison with the diameter of the fixed central part that the contact link held by the centering spring effects asymmetry balancing of the contact link until the centering spring stops against the central part.

14. The rotor of claim 12 , wherein the first rotor pin, the second rotor pin and the fixed central part are formed integrally.

15. An electric switch, comprising:
the rotor of claim 1 ; and
two stationary contacts, wherein the rotor is configured to interact with the two stationary contacts so as to close or open a circuit.

16. The rotor of claim 3 , wherein the two pairs of first and second springs are in the form of tension springs.

17. The rotor of claim 3 , wherein the two plates and the contact link include a central cutout, through which a guide pin, acting as rotary spindle of the rotor, is guided.

18. The rotor of claim 13 , wherein the first rotor pin, the second rotor pin and the fixed central part are formed integrally.

19. An electric switch, comprising:
the rotor of claim 6 ; and
two stationary contacts, wherein the rotor is configured to interact with the two stationary contacts so as to close or open a circuit.

Assignees

• Siemens Ag

Inventors

• Biedunkiewicz Pawel
• Dahl Jörg-Uwe
• Deylitz Erhard

Classifications

• H01H73/045

  Bridging contacts · CPC title

• H01H3/32 Primary

  Driving mechanisms, i.e. for transmitting driving force to the contacts (snap-action arrangements H01H5/00; introducing a predetermined time delay H01H7/00) · CPC title

• H01H1/205

  Details concerning the elastic mounting of the rotating bridge in the rotor · CPC title

• H01H2235/004

  Two parallel coil springs · CPC title

• H01H1/2041 Primary

  Rotating bridge · CPC title