Electric power tool

• Main Authors: KAMIYA, SHINGO, HIRATA, YUSUKE, TOMITA, AKIFUMI
• Format: Patent
• Language: English; French; German
• Published: 06.04.2011
• Subjects: ACCESSORY MACHINES OR APPARATUS; COMPONENTS OR ACCESSORIES THEREFOR; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; SAFETY DEVICES, e.g. THOSE FOR SAWS; SAWS FOR WOOD OR SIMILAR MATERIAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

An electric power tool has an electric motor disposed in a main body (12) and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member (26) is supported by the main body (12), a detector is disposed in the main body to detect a movement of the movable member (26) and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member (26). The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened.