Magnetic locking system for e.g. belt pretensioner, in car, has securing sleeve holding locking element in locking position by retaining force, and coil for producing electromagnetic force acting opposite to force during current supply

• Main Authors: RUFER, MANFRED, KEMKOWSKI, THOMAS, STORJOHANN, JENS, PFEIFFER, BORGAR
• Format: Patent
• Language: English; German
• Published: 24.09.2009
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDUCTANCES; LIGHTING; MAGNETS; MECHANICAL ENGINEERING; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; THERMAL INSULATION IN GENERAL; TRANSFORMERS; WEAPONS

The system has a retaining pin (4) comprising a spherical interference element (6), to which a locking element e.g. locking roller or locking ball (10), is attached in a locking position in a form-fit manner. A spring element (34) i.e. compression spring, and a permanent magnet (40) produce a retaining force. A securing sleeve (20) holds the locking element in the locking position by the retaining force. A coil (48) produces electromagnetic force acting opposite to the retaining force during current supply. Die Erfindung betrifft ein magnetisches Verriegelungssystem mit einem Haltestift und zumindest einem Verriegelungselement, wobei der Haltestift zumindest ein Eingriffselement aufweist und das Verriegelungselement in einer Verriegelungsposition mit dem Eingriffselement formschlüssig in Eingriff ist, zumindest einem Sicherungsmittel, welches mittels einer permanentmagnetischen Haltekraft das Verriegelungselement in der Verriegelungsposition hält, sowie zumindest einer Spule, welche bei Bestromung eine der Haltekraft entgegengesetzt wirkende elektromagnetische Kraft erzeugt.