Hand-guided power tool

• Main Authors: GUENTER WOLF, WOLFGANG WEISSERT
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2017
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

The invention relates to a hand-guided power tool and a method for its production. A hand-guided power tool comprises an internal combustion engine comprising a cylinder in which a combustion chamber delimited by a piston is provided. The piston in operation drives in rotation by means of a connecting rod a crankshaft about an axis of rotation of the crankshaft. The power tool comprises an electronic control unit and an ignition device. The ignition device comprises a spark plug. The crankshaft is torsionally connected with a support for a signal transducer. The signal transducer is fixed on the support. The ignition device, by utilizing a signal generated by the signal transducer, fires the spark plug at an ignition timing predetermined by the electronic control unit. The support comprises a polygonal conical receptacle. The crankshaft has a polygonal conical section that corresponds with the polygonal conical receptacle of the support and is arranged in the polygonal conical receptacle of the support. With