7results about "Snap-action arrangements" patented technology

An actuator for actuating a switch of a powered device having a plurality of positions in which the actuator is magnetically held in position. The actuator includes a first actuator portion including a magnet and a first magnetic element having a first plurality of limbs, whereby magnetic flux of the magnet is directed through the first plurality of limbs; and a second actuator portion including a second magnetic element having a second plurality of limbs for receiving the magnetic flux from the first plurality of limbs. The actuator has a plurality of positions in which limbs of the first plurality of limbs align with limbs of the second plurality of limbs thereby to couple the magnetic flux in a flux loop through two limbs of the first plurality of limbs of the first magnetic element and two limbs of the second plurality of limbs of the second magnetic element.

The present invention relates to a quick-acting switch (100), comprising a housing (1) and an actuating rod (2) having two switching positions. The actuating rod has at least one contact bridge (31, 32) for electrically connecting at least one first fixed contact pair (23, 24) in the switching position and quick-acting springs (8, 9) supported substantially symmetrically on an actuating element (3) and the actuating rod (2) in a preloaded manner. The line of action of the quick-acting springs is movable by the actuating element (3) such that the actuating rod (2) can be quickly switched from a first switching position in which the actuating rod (2) is substantially stationary to a second switching position in which the actuating rod (2) is substantially actuated. The quick-acting switch (100) further includes a forced disconnection device by which, when the force acting on the actuating element (3) exceeds a certain limit, the actuating rod (2) can be quickly disconnected from the actuating element (3). When the disconnection force is applied, a switching from at least the first switch position to the second switch position is forced, wherein at least one contact bridge (31, 32) has at least two contact points (17, 18, 19, 20) at one end and the other end respectively for electrically parallel contacting the first fixed contact pair (23, 24), wherein each contact point (17, 18, 19, 20) is designed to be able to fully switch the rated power of the quick-action switch (100), and (as shown in FIG3) the actuating rod (2) has at least one first stop (41) at least in the closing direction of the first fixed contact pair (23, 24), the first stop interacting with a first mating stop (51) to limit the movement of the actuating rod (2) in the closing direction of the first fixed contact pair (23, 24).

The invention relates to a microelectromechanical drive for moving an object, having electrostatic bending actuators, wherein each electrostatic bending actuator has a cantilever having at least one active element which has a layer stack forming at least one capacitor positioned offset to a center-of-gravity-plane of the cantilever which leads alongside a longitudinal axis of the cantilever from a supported end of the cantilever to a loose end, which is averted from the supported end of the cantilever and which has a contact area for engaging with the object.The microelectromechanical drive can be used to displace any target objects from nanoscopic to macroscopic sizes that are within the force-displacement configurations of the electrostatic bending actuators. The microelectromechanical drive is suited to act as an inchworm drive.

The application relates to the technical field of power equipment, and discloses a double-spring bypass operation arc extinguishing switch and a bypass operation method, which comprises a double-spring energy storage driving assembly, an unlocking operation assembly, a contact arc extinguishing assembly and a double-path conductive assembly; the double spring is independently compressed to store energy and is independently unlocked to release energy, and two sets of unlocking assemblies correspond to control of spring energy storage and energy release; the contact assembly adopts a main contact and arc contact hierarchical separation structure to realize forced arc extinguishing in cooperation with an arc extinguishing tube; the main contact and the arc contact adopt independent conductive paths, and there is no direct conductive connection between the static arc contact and the static contact; and the double-path conductive assembly realizes current shunting. Through cooperation of various assemblies, the application realizes rapid opening and closing and efficient arc extinguishing, protects the main contact, improves conductive stability, is suitable for high-voltage bypass live working, guarantees operation safety and stable operation of a line, and has the advantages of reasonable structure, convenient operation and long service life.

The present invention belongs to the technical field of low-voltage electrical appliances, and discloses an isolation switch closing energy storage mechanism and an isolation switch. The isolation switch closing energy storage mechanism includes a contact support, a contact bridge, an elastic member and an energy storage structure, wherein the contact support is slidably assembled in a housing; the contact bridge is movably assembled on the contact support; the elastic member is connected to the contact bridge and the contact support; the elastic member is used to drive a moving contact on the contact bridge to move to the static contact; and the energy storage structure is used to make the elastic member store energy first and then release it when the contact support drives the moving contact on the contact bridge to move to the static contact. The elastic member releases energy and can drive the moving contact to quickly contact the static contact, which can reduce the generation of a contact arc and effectively reduce a contact resistance and temperature between the moving contact and the static contact, thereby reducing the degrees of ablation and wear of a contact point and improving the electrical life performance of the isolation switch.

An electrical contactor including stationary contacts and movable contacts which are movable relative to the stationary contacts between a position of contact with the stationary contacts and a position of separation from the stationary contacts; an actuator for driving the movable contacts to move relative to the stationary contacts towards either the position of contact with the stationary contacts or the position of separation from the stationary contacts; a linkage for driving the movable contacts from the contact position to the separation position, independently of the actuator; the electrical contact is such that the linkage includes a drive spring and a system for disengageably locking the linkage.