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公开(公告)号：EP1847006B1
公开(公告)日：2018-10-10
申请号：EP06720141.8
申请日：2006-02-02
申请人： Black & Decker Inc.
CPC分类号： H02K15/0435 , H02K15/12 , Y10T29/49009 , Y10T29/49071 , Y10T29/49073 , Y10T29/49174 , Y10T29/53143 , Y10T29/53157
摘要： A tool and method for winding and forming a field coil for field assembly, such as a stator, includes separable tool halves defining a winding cavity therebetween. The winding cavity receives magnet wire that is wound therein, such as by rotating the tool or a winding nozzle. The magnet wire generally conforms to the shape of the winding cavity such that when the tool halves are separated, a field coil having a net shape is produced. Once the magnet wire is sufficiently deposited within the winding cavity, wires of the coil may be bonded together either through a resistive heating process such as by passing an electrical current through the coil or through other heating or chemical bonding methods to thereby maintain the net shape of the field coil once it is removed from the tool.
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公开(公告)号：EP1901891A1
公开(公告)日：2008-03-26
申请号：EP06774606.5
申请日：2006-07-10
申请人： Black & Decker Inc.
摘要： A power tool has an electric motor with field windings. In an aspect of the invention, each field winding includes two coils wound with the same number of turns of the same gauge magnet wire. When the motor is first energized, the two coils of each field winding are connected in series, reducing in-rush current. Upon expiration of a soft start period, which can be after the motor reaches a predetermined speed or upon expiration of a predetermined time period, the two coils of each field winding are connected in parallel. In another aspect of the invention, an electric motor used in a power tool includes field windings that are connected in series with a separate start winding when the motor is first energized. Upon expiration of the soft start period, the start winding is bypassed. In another aspect of the invention, the separate start winding includes two sub-windings. The two sub-windings are connected in a way that magnetic field created by the two sub-windings is counterbalanced so that the overall magnetic force created by the start winding in the motor armature is minimized or zero. Also, the voltage across the two sub-windings is minimized or zero. In another aspect, the field windings are connected in series with a start impedance when the motor is first energized and a time delay relay having a set of delay contacts coupled across the start impedance energized. Upon expiration of the soft start period, the time delay contacts close, bypassing the start impedance. In an aspect, the motor is a universal motor.
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4.发明公开TOOL FOR MANUFACTURING COILS FOR DYNAMOELECTRIC MACHINES AND METHOD THEREFOR 审中-公开工具用于生产REEL迪纳摩，电机及其方法
公开(公告)号：EP1847006A2
公开(公告)日：2007-10-24
申请号：EP06720141.8
申请日：2006-02-02
申请人： Black & Decker Inc.
IPC分类号： H02K15/00
CPC分类号： H02K15/0435 , H02K15/12 , Y10T29/49009 , Y10T29/49071 , Y10T29/49073 , Y10T29/49174 , Y10T29/53143 , Y10T29/53157
摘要： A tool and method for winding and forming a field coil for field assembly, such as a stator, includes separable tool halves defining a winding cavity therebetween. The winding cavity receives magnet wire that is wound therein, such as by rotating the tool or a winding nozzle. The magnet wire generally conforms to the shape of the winding cavity such that when the tool halves are separated, a field coil having a net shape is produced. Once the magnet wire is sufficiently deposited within the winding cavity, wires of the coil may be bonded together either through a resistive heating process such as by passing an electrical current through the coil or through other heating or chemical bonding methods to thereby maintain the net shape of the field coil once it is removed from the tool.
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