OSCILLATING ELECTRIC POWER TOOL WITH BALANCED ARMATURE SHAFT

• Main Authors: HESS, Achim, KLABUNDE, Olaf, BLICKLE, Juergen
• Format: Patent
• Language: English
• Published: 14.01.2021
• Subjects: BLASTING; COMPONENTS OR ACCESSORIES THEREFOR; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DRESSING OR CONDITIONING OF ABRADING SURFACES; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; GRINDING; HEATING; LIGHTING; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; POLISHING; SAWS FOR WOOD OR SIMILAR MATERIAL; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.