摘要:
An electromagnetic switch comprises at least one pair of magnetically latchable electrical contacts (12a, 14a) operated by current flowing in an associated coil means (K1, K2), and an electrical circuit arranged to apply a first current in a first direction through the coil means to close the contacts and subsequently to apply a second current in a second, opposite, direction through the coil means to open the contacts. In certain embodiments the coil means comprises first and second independent coils (K1, K2) and the first and second currents flow in opposite direction in the first and second coils respectively. In other embodiments the coil means comprises a single coil (K1) and the first and second currents flow in opposite directions in the single coil.
摘要:
The invention relates to an electromagnetic actuator for operating at least one movable contact of a switch into a switched-on position or a switched-off position, wherein the electromagnetic actuator comprises: - a static pole body; - a movable pole body movable relative to the static pole body; - a first magnetic circuit comprising a first coil for making the movable pole body and the fixed pole body move towards each other to a switched-on position and a second coil for making the movable pole body and the fixed pole body move away from each other to a switched-off position; and - a second magnetic circuit comprising a permanent magnet and a retaining plate to keep the static pole body and the movable pole body in the switched-on position; - first spring means for urging the static pole body and the movable body away from each other; wherein the first and second magnetic circuit are arranged concentrically.
摘要:
The invention relates to a load-disconnecting switch with a permanent magnet holding circuit. When excited, a coil (5) generates a magnetic flux that is opposite to the flux of the permanent magnet (9). The armature (6) is pre-stressed in an opened position by an armature spring (10) so that the armature spring (10) detaches the armature (6) from the core (7) of the magnet system, opening said armature, when a defined excitation is exceeded, and thereby disconnecting a switch contact (15) from a stationary contact (16). The load-disconnecting switch can be switched on again by means of a spring clip (12) that acts on the armature (6).
摘要:
Un dispositif de commutation (Figures 5A et 5B) utilise, à titre d'actuateur, un électro-aimant bistable comprenant un noyau plongeur (16) déplaçable à l'intérieur d'un enroulement (12) entre des positions terminales dans chacune desquelles ledit noyau est retenu par des aimants permanents (18, 20). Le noyau plongeur (16) de l'actuateur peut venir en contact avec un levier isolé (86) qui actionne à son tour une lame de contact (76) par l'intermédiaire d'un ressort (108). Le levier peut être contre-coudé et peut être prolongé (90) jusqu'à l'extérieur du boîtier (70) afin de permettre la commande manuelle du dispositif ou d'assurer une indication visuelle de l'état du commutateur. D'autres types d'électro-aimants peuvent servir d'actuateur.
摘要:
An aspect of the present invention provides an electric magnet device (41), in which a smooth movement of an armature (71, 87) is ensured and, even if a vibration or an impact is applied, an attraction state between a yoke (50, 85, 91) and the armature (71, 87) is maintained to prevent a malfunction, and a switch (1) provided therewith, where the electric magnet device (41) includes: a coil (48) adapted to insert through an armature (71, 87) and a yoke (50, 85, 91) so as to attract surfaces of the yoke (50, 85, 91) and the armature (71, 87), which are opposed to each other, to receive a voltage, to excite for separating the surfaces of the yoke (50, 85, 91) and the armature (71, 87); the armature (71, 87) disposed on one end side of the coil (48); and the yoke (50, 85, 91) disposed on the other end side of the coil (48) and adapted to oscillate, such that an oscillation angle of the yoke (50, 85, 91) is greater than that of the armature (71, 87).
摘要:
An aspect of the present invention provides an electric magnet device (41), in which a smooth movement of an armature (71, 87) is ensured and, even if a vibration or an impact is applied, an attraction state between a yoke (50, 85, 91) and the armature (71, 87) is maintained to prevent a malfunction, and a switch (1) provided therewith, where the electric magnet device (41) includes: a coil (48) adapted to insert through an armature (71, 87) and a yoke (50, 85, 91) so as to attract surfaces of the yoke (50, 85, 91) and the armature (71, 87), which are opposed to each other, to receive a voltage, to excite for separating the surfaces of the yoke (50, 85, 91) and the armature (71, 87); the armature (71, 87) disposed on one end side of the coil (48); and the yoke (50, 85, 91) disposed on the other end side of the coil (48) and adapted to oscillate, such that an oscillation angle of the yoke (50, 85, 91) is greater than that of the armature (71, 87).
摘要:
A safety switch for a safety circuit, the safety switch comprising a moveable magnet moveably located between a fixed contact and a fixed magnet, a movable contact being fixed to the moveable magnet, wherein the safety switch further comprises coils located adjacent to the moveable magnet, the coils being arranged such that when they are energised they push the moveable magnet towards the fixed contact such that the movable contact presses against the fixed contact, and the fixed magnet being arranged such that when the coils are not energised the moveable magnet and the moveable contact are pulled away from the fixed contact.
摘要:
The invention relates to an electromechanical switch. In order to simplify and reduce the production costs of a push-button switch, especially a push switch or a rocker switch, said switch has time functions, is manually operated and can be reset by an electric pulse. The inventive electromechanical rocker or push-button switch can be combined to form a device block switch with other rocker or push-button switches as usually used in exhauster hoods. As a result, time-controlled intensive and follow-up steps can be carried out.
摘要:
An electromagnetic actuator comprises a yoke (18) of a material having a low magnetic remanence, and a rare earth permanent magnet (24) in series with said yoke (18), providing a magnetic circuit having no flux gap. A coil (28) can induce in the yoke (18) a flux which is opposed to that from the permanent magnet (24), and an armature (26) which is responsive to the combined flux from said permanent magnet (24) and said coil (28).