Patent EA-003999-B1 (EA)
Title: On/off control device, especially for a disconnection device such as a circuit breaker and circuit breaker fitted with said device
Inventor: BOLONGEAT ROGER
IPC: H01H33/666
Filed: 2000-03-15
Abstract: 1. Opening and/or closing control device, in particular for a switchgear apparatus such as a circuit breaker, comprising an armature (9) which is mechanically linked to an actuating rod (10) for the contacts of the device and which can move in a support block (13) between a rest position and an active position, at least one permanent magnet (16,17) and at least one winding (18,19), the magnet or magnets (16,17) are used to retain the armature (9) in a rest position, the winding or windings (18,19) are used to generate a magnetic field to counteract the force of the magnets upon the appearance of an on command as a result of an overvoltage, whereby the armature (9) is driven towards an active position resulting in the separation of the contacts (or respectively the disconnection of said contacts), characterized in that said armature (9) is moveably mounted in such a way that it can rotate between two stops (11,12) provided in the support (13) and said stops (11,12) respectively define the two above-mentioned positions. 2. The device according to claim 1, characterized in that the armature (9) comprises an elongated piece having two opposite arched-shaped ends (9a,9b), said piece is rotatably mounted around axis X extending perpendicular to the longitudinal direction of said armature (9). 3. The device according to claim 1 or 2, characterized in that said support (13) comprises two guide surfaces (14,15) for direction of rotation arranged between said stops (11,12) for joint operation with two ends (9a,9b) of the armature (9). 4. The device according to any one of claims 1-3, characterized in that two stops (11,12) are shaped complementing said ends (9a,9b) shape to bring in contact with said stops (11,12). 5. The device according to any one of claims 1-4, characterized in that each stop (11,12) is formed by two support portions (11a,11b,12a,12b) arranged symmetrically towards each other and relative to the X axis of armature (9) rotation. 6. The device according to any one of claims 1-5, characterized in that comprises two permanent magnets (16,17) arranged respectively along two guide surfaces (14,15) in a manner opposite each other and relative to the X rotation axis. 7. The device according to claim 6, characterized in that two magnets (16,17) are arranged about in the middle of circumference of two said guide surfaces (14,15). 8. The device according to claim 6 or 7, characterized in that comprises at least one winding (18,19) arranged in the support (13) between two guide surfaces (14,15), wherein said winding(s) is (are) shifted relative to each magnet at an angle of about 90 degree . 9. The device according to any one of claims 1-8, characterized in that comprises two windings (18,19) to generate respectively magnetic fields of counteract direction to drive the armature (9) in one direction for opening contacts and in the opposite direction for closing contacts. 10. The device according to claim 9, characterized in that each of two windings (18,19) is arranged between two magnets (16,17) respectively on one and other sides of the X axis so that to be mutually shifted at an angle of about 180 degree . 11. The device according to any one of claims 6-10, characterized in that the direction of magnetizing magnets (16,17) is chosen so that the closing torque exceeds the opening torque. 12. A circuit breaker equipped with such a device according to any one of claims 1-11.