摘要:
A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The field coils may be formed so that they extend beyond pole tips of the pole pieces.
摘要:
A power tool has a motor having a stator made by separately forming pole pieces and field coils. The field coils are placed over necks of the pole path pieces. An armature has an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The housing has a girth of 200 mm or less with the motor wound to provide a maximum watts out to housing girth ratio of at least 5 maximum watts outs to 1 mm of housing girth. The field coils may be formed so that they extend beyond pole tips of the pole pieces.
摘要:
A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The field coils may be formed so that they extend beyond pole tips of the pole pieces.
摘要:
A power tool has a motor having a stator made by separately forming pole pieces and field coils. The field coils are placed over necks of the pole path pieces. An armature has an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The housing has a girth of 200 mm or less with the motor wound to provide a maximum watts out to housing girth ratio of at least 5 maximum watts outs to 1 mm of housing girth. The field coils may be formed so that they extend beyond pole tips of the pole pieces.
摘要:
An electric motor, power tool using the electric motor, and method of making the electric motor includes making a stator that includes pole portions that have axially opposed ends that gradually decrease in width. The pole portions may also have dovetail features that are received in corresponding recesses of the back iron portion.
摘要:
An electric motor, power tool using the electric motor, and method of making the electric motor includes making a stator that includes pole portions that have axial lengths less than an axial length of a back iron portion. Alternatively, or in addition, the pole portions have axially opposed ends that decrease in width. Alternatively, or in addition, the pole portions have dovetail features that are received in corresponding recesses of the back iron portion.
摘要:
A universal termination system is provided for power tools. The universal termination system includes criteria for each of the main switch platforms that define the number, type, location and orientation of the terminations. That is, the number, type, location and orientation of the terminations in each main switch platform are standardized and the power tools that use that type main switch platform use the main switch platform having the standardized terminations. That is, power tools that use push button switches use the push button switch with the standardized terminations, power tools that use overhang switches use the overhang switch with the standardized terminations, and power tools that use in-line VSR switches use the in-line VSR switch with the standardized terminations. In an aspect of the invention, a right-angle pin terminal is received in one or more sets of the standardized terminations. In an aspect of the invention, the switch body has features that cooperate with the right-angle pin terminals to reduce the risk of shorting adjacent terminals. In an aspect of the invention, a switch has standardized connections on a bottom of a switch body that mate with terminals of a plug-in control module. In an aspect of the invention, a switch for a hand-held power tool has cord set terminations that are screw-tab terminals.
摘要:
A universal termination system is provided for power tools. The universal termination system includes criteria for each of the main switch platforms that define the number, type, location and orientation of the terminations. That is, the number, type, location and orientation of the terminations in each main switch platform are standardized and the power tools that use that type main switch platform use the main switch platform having the standardized terminations. That is, power tools that use push button switches use the push button switch with the standardized terminations, power tools that use overhang switches use the overhang switch with the standardized terminations, and power tools that use in-line VSR switches use the in-line VSR switch with the standardized terminations. In an aspect of the invention, a right-angle pin terminal is received in one or more sets of the standardized terminations. In an aspect of the invention, the switch body has features that cooperate with the right-angle pin terminals to reduce the risk of shorting adjacent terminals. In an aspect of the invention, a switch has standardized connections on a bottom of a switch body that mate with terminals of a plug-in control module. In an aspect of the invention, a switch for a hand-held power tool has cord set terminations that are screw-tab terminals.
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.
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.