Relay

Patent metadata

Field	Value
Publication number	US-12094673-B2
Application number	US-201816956406-A
Country	US
Kind code	B2
Filing date	Dec 4, 2018
Priority date	Dec 21, 2017
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A relay is disclosed. In an embodiment a relay includes a first switching contact having a first main contact, a second main contact and a first movable contact; a second switching contact having a third main contact, a fourth main contact and a second movable contact, wherein the second switching contact is electrically isolated from the first switching contact; and an actuator configured to move both the first and second movable contacts from a first switching state into a second switching state by moving a drive element of the actuator from a first position into a second position.

First claim

The invention claimed is:

1. A relay comprising:
a first switching contact having a first main contact, a second main contact and a first movable contact;
a second switching contact having a third main contact, a fourth main contact and a second movable contact, wherein the second switching contact is electrically isolated from the first switching contact; and
an actuator comprising a movable runner and a coil,
wherein the runner comprises a drive element and a contact carrier coupled to the drive element and comprising a first arm, on which the first movable contact is arranged and a second arm on which the second movable contact is arranged,
wherein the actuator is configured to move both the first and second movable contacts from a first switching state into a second switching state by moving the drive element from a first position into a second position,
wherein, in a normal operating mode, the movable contacts and the main contacts are not permanently connected to one another,
wherein, in the first switching state, the first movable contact is coupled in an electrically conductive manner between the first and second main contacts and the second movable contact is coupled in an electrically conductive manner between the third and fourth main contacts,
wherein, in the second switching state, the first movable contact is electrically isolated from the first and second main contacts and the second movable contact is electrically isolated form the third and fourth main contacts,
wherein the actuator is further configured to move one of the movable contacts from the first switching state into the second switching state by moving the drive element from the first position in a direction of the second position in an event of a fault in which one of the movable contacts is permanently connected to one of the main contacts, and
wherein the runner and with it the first movable contact and the second movable contact is configured to perform, depending on the state of the coil, a translatory movement along a longitudinal axis of the coil between the first position and the second position.

2. The relay according to claim 1 , wherein the contact carrier is coupled to the drive element so that, in the normal operating mode during a transition from the first position into the second position, the arms are coupled to a movement of the drive element and, in the event of the fault during a transition from the first position in the direction of the second position, an arm, on which the movable contact permanently connected to one of the main contacts is arranged, is decoupled from the movement of the drive element.

3. The relay according to claim 2 , wherein the drive element and the contact carrier with the first and second arms are configured to perform a linear movement during the transition from the first position into the second position in the normal operating mode.

4. The relay according to claim 2 , wherein the drive element and a carrier body of the contact carrier on which the arms are arranged are coupled via a joint so that they are configured to perform a linear movement in the normal operating mode and so that the carrier body is configured to perform a rotational movement simultaneously with the linear movement of the drive element in the event of the fault.

5. The relay according to claim 4 , wherein the arms are mounted such that they are configured to perform a counter movement with respect to the rotational movement of the carrier body.

6. The relay according to claim 4 , wherein each arm is coupled to the carrier body via a joint.

7. The relay according to claim 2 , wherein the arms are mounted such that they are configured to be deflected in a linear manner during the transition from the first position into the second position but not during the transition from the second position into the first position.

8. The relay according to claim 7 , wherein the arm, on which the movable contact permanently connected to one of the main contacts is arranged, is configured to not follow or to not completely follow a linear movement of the drive element in the event of the fault.

9. The relay according to claim 7 , wherein the arms are coupled to a carrier body such that the arms are extendible.

10. The relay according to claim 7 , wherein each arm is coupled to a carrier body via a joint.

11. The relay according to claim 7 , wherein a spring is configured to counteract a deflection of the arms.

12. The relay according to claim 2 , wherein the arm, on which the movable contact permanently connected to one of the main contacts is arranged, is configured to not follow or to not completely follow a linear movement of the drive element in the event of the fault.

13. The relay according to claim 2 , wherein the arms are coupled to a carrier body such the arms are extendible.

14. The relay according to claim 2 , wherein each arm is coupled to a carrier body via a joint.

15. The relay according to claim 2 , wherein a spring is configured to counteract a deflection of the arms.

16. The relay according to claim 1 , wherein the coil is configured to be switched from an idle state into a state in which current flows, and wherein the position of the drive element depends upon the state of the coil.

17. The relay according to claim 1 , further comprising a gas-tight housing chamber in which the movable contacts are arranged.

18. The relay according to claim 1 , wherein the fault occurs as a result of one of the main contacts welding to one of the moving contacts as a result of switching sparks.

Assignees

• Tdk Electronics Ag

Inventors

• Hoffmann Robert
• Weinhardt Jonas

Classifications

• H01H50/641

  intermediate part performing a rectilinear movement (H01H50/645, H01H50/66 - H01H50/74 take precedence) · CPC title

• H01H50/546 Primary

  for contactors having bridging contacts · CPC title

• H01H50/18

  Movable parts of magnetic circuits, e.g. armature · CPC title

• H01H50/023

  Details concerning sealing, e.g. sealing casing with resin · CPC title

• H01H2001/0005

  Redundant contact pairs in one switch for safety reasons · CPC title