Rotor for an electric switch

Patent metadata

Field	Value
Publication number	US-9299518-B2
Application number	US-201313975594-A
Country	US
Kind code	B2
Filing date	Aug 26, 2013
Priority date	Aug 29, 2012
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A rotor for an electric switch is disclosed. In an embodiment, the rotor includes a rotor housing and a rotatably mounted contact bridge, which exhibits two movable contacts, wherein, by the rotation of the rotor, the two movable contacts can interact with two fixed contacts of an electric switch for closing or opening a circuit. The rotatably mounted contact bridge in the rotor housing is movably mounted in a direction perpendicular to the direction of the contact bridge in its closed position.

First claim

What is claimed is:

1. A rotor for an electric switch, comprising:
a rotor housing;
a rotatably mounted contact bridge including two movable contacts, the two movable contacts being configured to, by rotation of the rotor, interact with two fixed contacts of an electric switch to close or open a circuit, the rotatably mounted contact bridge being movably mounted in the rotor housing in a direction perpendicular to a direction of the contact bridge in a closed position;
a first plate in an interior of the rotor housing, arranged essentially perpendicular to the contact bridge;
two pairs of first and second spring pins; and
two pairs of first and second springs, first ends of the respective pairs of springs being secured to the first spring pins, wherein the first spring pins lie on the contact bridge and the first plate, and second ends of the respective pairs of springs being secured to the second spring pins, wherein the second spring pins are secured to the first plate, such that, in the closed position of the rotor, a minimum contact pressure of the movable contacts of the contact bridge onto the fixed contacts is guaranteed, the second spring pins being movably mounted in the rotor housing.

2. The rotor for an electric switch of claim 1 , wherein the rotatably mounted contact bridge is movably mounted in the rotor housing in a direction perpendicular to an axis of rotation of the contact bridge.

3. The rotor of claim 1 , further comprising:
a second plate in the interior of the rotor housing, wherein the first spring pins lie on the contact bridge and the first and second plates, and wherein the second ends of the respective pairs of springs are secured to the second spring pins and wherein the second spring pins are secured to the first and second plates.

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

5. The rotor of claim 1 , wherein the two plates and the contact bridge exhibit a middle recess, through which a guide pin is guidable, which serves as an axis of rotation of the rotor.

6. The rotor of claim 5 , wherein the middle recess is formed as a longitudinal hole along a direction perpendicular to the direction of the contact bridge in the closed position.

7. The rotor of claim 3 , wherein the first and second plates are connected to each other by a connection tube, and wherein the connection tube is guided through the middle recess of the contact bridge.

8. The rotor of claim 7 , further comprising:
a guide pin as the axis of rotation of the rotor, guidable through the connection tube.

9. The rotor of claim 8 , wherein the diameter of the guide pin is formed so relatively small in comparison with the internal diameter of the connection tube that the guide pin is mountable eccentrically in the connection tube.

10. The rotor of claim 1 , wherein the second spring pins each respectively mounted in a notch of the rotor.

11. The rotor of claim 10 , wherein the second spring pins are movably mounted in a direction perpendicular to the direction of the contact bridge in the closed position.

12. The rotor of claim 1 , wherein the second spring pins are mounted floating in the rotor.

13. The rotor of claim 3 , wherein the first and second plates are mounted floating in the rotor.

14. An electric switch comprising:
the rotor of claim 1 ; and
two fixed contacts, the rotor being configured to interact with the two fixed contacts for opening or closing a circuit.

15. The rotor for an electric switch of claim 2 , further comprising:
a first plate in an interior of the rotor housing, arranged essentially perpendicular to the contact bridge;
two pairs of first and second spring pins; and
two pairs of first and second springs, first ends of the respective pairs of springs being secured to the first spring pins, wherein the first spring pins lie on the contact bridge and the first plate, and second ends of the respective pairs of springs being secured to the second spring pins, wherein the second spring pins are secured to the first plate, such that, in the closed position of the rotor, a minimum contact pressure of the movable contacts of the contact bridge onto the fixed contacts is guaranteed, the second spring pins being movably mounted in the rotor housing.

16. The rotor of claim 15 , further comprising:
a second plate in the interior of the rotor housing, arranged essentially parallel to the contact bridge and to the first plate, wherein the first spring pins lie on the contact bridge and the first and second plates, and wherein the second ends of the respective pairs of springs are secured to the second spring pins and wherein the second spring pins are secured to the first and second plates.

17. The rotor of claim 15 , wherein the two pairs of first and second springs are formed as tension springs.

18. The rotor of claim 16 , wherein the first and second plates and the contact bridge exhibit a middle recess, through which a guide pin is guidable, which serves as an axis of rotation of the rotor.

19. The rotor of claim 18 , wherein the middle recess is formed as a longitudinal hole along a direction perpendicular to the direction of the contact bridge in the closed position.

20. An electric switch comprising:
the rotor of claim 2 ; and
two fixed contacts, the rotor being configured to interact with the two fixed contacts for opening or closing a circuit.

Assignees

• Siemens Ag

Inventors

• Biedunkiewicz Pawel
• Dahl Jörg-Uwe
• Weber Christoph

Classifications

• H01H73/045

  Bridging contacts · CPC title

• H01H19/36 Primary

  the operating part having only two operative positions, e.g. relatively displaced by 180 degrees · CPC title

• H01H1/2041 Primary

  Rotating bridge · CPC title

• H01H1/205

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