Abstract: A disk motor and an electric power tool in which positioning of a coil disk with respect to a commutator disk can be carried out while reliably ensuring insulating properties are provided. A disk motor having: an output shaft part; a coil disk that is provided with a coil pattern and provided coaxially to the output shaft part; a commutator disk that is provided with a commutator pattern and provided coaxially to the output shaft part; and a positioning pin that is electrically insulated from the coil disk and the commutator disk, is engaged with the output shaft part and the coil disk, and carries out positioning of the coil disk with respect to the output shaft part, and an electric power tool having the disk motor are provided.

Abstract: An outdoor power equipment unit such as a string trimmer, and an electric motor support structure for use with the same. The structure may form a cage that surrounds the motor and secures the motor in place relative to an outermost shell of a motor housing of the string trimmer. The cage may electrically and/or thermally insulate the outermost shell from the motor.

Abstract: A power tool includes a housing, a motor, an output unit, and a circuit board unit. The motor is accommodated in the housing and has a rotational axis extending in a top-bottom direction. The output unit is disposed above the motor and extends in a front-rear direction. A power cable is configured to be connected to a power source and is connected to the circuit board unit. The circuit board unit is accommodated in the housing. The circuit board unit comprises a switching element for driving the motor, and a rectifying device configured to rectify an alternating current from the power source to a direct current. The circuit board unit is disposed below the motor and extends in the front-rear direction in the housing.

Abstract: A tool cover for receiving a tool housing of a pneumatic tool is disclosed. The tool cover supports and aligns an inductor element of a stator with magnets of a rotor within the tool housing. The tool cover also supports a circuit to which the inductor element is electrically connected, where the circuit comprises a power conditioner for receiving current from the inductor element and conditioning the current to be acceptable for supply to a load that comprises one or more logic processing devices.

Abstract: A power tool with a combined printed circuit board (PCB) having a doughnut shape and located coaxially with a motor shaft. The combined PCB is secured to a heat sink on one end of the motor and a metal end piece is positioned on an opposite end of the motor. The metal end cap and heat sink are secured to one another via fasteners to provide a rigid coupling. A tabbed end piece is provided between the heat sink and the motor stator and is also secured into place via the fasteners. The tabbed end piece includes wire support tabs that provide strain relief to motor coil leads. The wire support tabs extend axially from circumferential locations of the tabbed end piece and include channels to guide the motor coil leads to solder contact points on the combined PCB.

Abstract: An electric motor has a stator in which an armature is disposed. The armature has a shaft. One of the stator or the armature includes a lamination stack having slots in which magnet wires are wound, the magnet wires having a coating of heat activated adhesive. There is further provided plastic molded around the magnet wires with heat of the plastic activating the heat activated adhesive on the magnet wires during molding of the plastic to bond the magnet wires together.

Abstract: A handheld blower apparatus includes a housing (2), an axial blower (6) which conveys air through a blower tube (7), and an electric drive motor (4). The drive motor (4) has a rotor (22) and a stator (21) and rotatably drives a drive shaft (16) and at least one fan wheel (23) of the axial blower (6). A simple construction results when the drive shaft (16) is rotatably mounted in the housing (2), when the rotor (22) of the drive motor (4) is connected to the drive shaft (16) in a rotatably fixed manner and the stator (21) of the drive motor (4) is rotatably mounted on the drive shaft (16). The stator (21) is supported relative to the housing (2) to prevent rotation and can tilt in a limited manner relative to the housing (2).

Abstract: An electric motor includes a stator and a rotor. The rotor includes a motor shaft, at least one radial fan and at least one axial fan being non-rotatably situated on the motor shaft for motor cooling. The radial fan is situated in the area of one axial end of the motor shaft and the axial fan is situated in the area of a diametrically opposed axial end of the motor shaft.

Abstract: A device wherein food can be warmed by means of induction, said device comprising at least one secondary coil which is formed from a current conductor, whereon at least one heating element is connected. The invention also relates to a device which is used to transfer energy in a device in order to warm food by means of induction, said device comprising a primary coil which is connected to a voltage source and which is formed from a current conductor. According to the invention, the primary and secondary coil is cast into a coil body by casting means, and the insulating casting means exhibits a coefficient of thermal expansion which essentially corresponds to the coil body.

Abstract: An electric motor includes a stator, and a rotor which has a rotor shaft. At least one rotor position magnet is disposed on the rotor shaft, and is configured to provide a magnetic signal that can be evaluated, upon a rotation of the rotor shaft, at least for the purpose of determining a respective rotor position of the rotor. At least one carrier is disposed in a rotationally fixed manner on the rotor shaft, and is connected to the at least one rotor position magnet. The carrier includes at least one opening configured to compensate imbalance of the rotor.

Abstract: There is disclosed an electric power tool in which magnetic saturation seldom occurs in a tooth of a stator without increasing the size of a motor. The electric power tool includes a motor having a stator with a plurality of teeth formed circumferentially at equal intervals and axially extending groove-like slots between each tooth, with winding wires being wound around each tooth by use of the slots, and having a tubular rotor coaxially surrounding the stator with a permanent magnet of a plurality of poles on an inner peripheral surface facing distal end surfaces of the teeth of the stator. Further, the ratio of the number of poles of the permanent magnet of the rotor to the number of slots of the stator is set to be 4 to 3.

Abstract: In a rechargeable battery having a plurality of rechargeable battery cells, wherein at least one rechargeable battery cell is connected to an electronic component, which is associated with the rechargeable battery, via an electrical line, the electrical line has at least one contact element which is electrically conductively connected to the at least one rechargeable battery cell by an electrically conductive adhesive.

Abstract: An electric power tool, which uses a DC brushless motor as a drive source and controls the DC brushless motor by a switching element, can include a tubular housing main body portion accommodating the DC brushless motor, and a grip portion protruding from a side portion of the housing main body portion. The switching element is arranged inside the grip portion, and is spaced apart from an electronic circuit board for an electronic component for operating the switching element.

Abstract: The invention relates to an electric-motor arrangement for a medical, in particular dental, hand piece which has a motor housing (2) and a rotor (4) which is arranged in the motor housing (2) so that it can be rotated about an axis (L) via a first bearing (6) and a second bearing (8). A stator (14) is arranged around the rotor (4) in relation to the axis (L). The first bearing (6) is received in a first bearing flange (10), and the second bearing (8) is received in a second bearing flange (12). Both bearing flanges (10, 12) are composed of metal and adjoin the motor housing (2) directly by way of their circumferential faces (101, 121). As a result, running noise and vibrations can be reduced. Moreover, premature wear and/or failure can be prevented.

Abstract: A representative base unit for charging a remote controller and a multimedia device includes at least two docking stations for a remote controller and a multimedia device, wherein the at least two docking stations having charging slots that transfer power to the remote controller and the multimedia device for recharging; and a processing device that is electrically coupled to the docking stations for communicating with the remote controller and the multimedia device, wherein the processing device facilitates communication between the remote controller and the multimedia device.

Abstract: An electric power tool including: a housing; a brushless motor accommodated in the housing; a fan attached to a rotation shaft of the brushless motor; a switching element configured to control the brushless motor; and a substrate on which the switching element is mounted, wherein a first through-hole is provided to a switching element arranged portion of the substrate.

Abstract: Embodiments of the present invention may include an electric tool comprising an outer rotor type electric motor as a driving source and a stator supporting member made from metal. The motor preferably includes a stator and a rotator. The stator is preferably supported by the stator supporting member. The rotator is preferably located at an outer periphery of the stator.

Abstract: An electric power tool includes a housing, a brushless motor, an output shaft, and a motor driver circuit. The housing defines an axial direction. The brushless motor is accommodated in the housing and having a drive shaft. The output shaft extends in a direction generally perpendicular to the drive shaft. The motor driver circuit is accommodated in the housing for driving the brushless motor. The housing has a cylindrical shape and has a part functioning as a grip portion.

Abstract: An electric power tool, which uses a DC brushless motor as a drive source and controls the DC brushless motor by a switching element, can include a tubular housing main body portion accommodating the DC brushless motor, and a grip portion protruding from a side portion of the housing main body portion. The switching element is arranged inside the grip portion, and is spaced apart from an electronic circuit board for an electronic component for operating the switching element.

Abstract: A power tool has a casing and a motor assembly installed within the casing. The motor assembly comprises a motor, a heat dissipation device, a fan and a guiding member. The motor has a stator and a rotor. The heat dissipation device has an annular heat absorbing section which is fitted to a housing of the stator and a plurality of fins extending from the heat absorbing section for dissipating heat. Air flow generated by the fan is guided to the fins of the heat dissipation device by the guiding member to cool the motor.

Abstract: The invention relates to an electric tool, in particular a hand-held electric tool, having a housing, which has a rear housing part and at least one front housing part arranged in front of the rear housing part in the longitudinal direction of the electric tool, and an electric drive motor having an armature shaft that extends in the longitudinal direction of the electric tool. The armature shaft is rotatably mounted together with a rear bearing arranged at the rear housing part. According to the invention, the rear bearing is designed as a fixed bearing.

Abstract: An electric auger including an auger assembly with a coupling assembly at a proximal end, a cutting assembly having at least one cutting blade located at a distal end, and a helical flight located between the proximal end and the distal end. The electric power head includes an A/C motor with a drive shaft configured to mechanically couple with the proximal end of the auger assembly. An on-board 36-volt DC battery pack powers the A/C motor. A controller includes an inverter that converts DC power to A/C power for the A/C motor. The ratio of cubic inches of ice cut per battery ampere-hour per weight in pounds of the electric auger is at least about 900 (inches3/ampere-hour/pounds).

Abstract: A hand-held power tool with a drive motor and a gear mechanism has elastomer elements molded onto the inner side of the housing. At least two elastomer elements form elastomer bearings for bearing the drive motor.

Abstract: An electric power tool includes: a motor; a housing receiving the motor; a power transmission mechanism configured to transmit a driving force of the motor to rotate a top tool; a snap switch including a swing type lever configured to turn on or off rotation of the motor, the snap switch being received inside the housing; a switch lever configured to move in a direction substantially vertical to a surface of the housing; a push bar configured to move the swing type lever in conjunction with the movement of the switch lever; and an urging unit configured to urge the push bar in a direction in which the switch is turned off.

Abstract: A battery pack for power tool includes a battery, a monitoring circuit, and a sleep mode switching unit. The battery includes at least one battery cell. The monitoring circuit is operated by receiving power supply from the battery. The sleep mode switching unit switches the battery pack to a sleep mode by stopping at least a part or all of operations of the monitoring circuit when the monitoring circuit detects a discharge end state where a discharge current from the battery is equal to or lower than a predetermined set current value, and the monitoring circuit further detects at least one of a voltage stable state where a voltage change amount in the battery cell is within a predetermined stable range of voltage change amount and a temperature stable state where a temperature change amount in the battery is within a predetermined stable range of temperature change amount.

Abstract: An electric power tool including: a motor; and a rotary impact mechanism configured to be driven by the motor, wherein the motor is configured such that a rotation speed thereof can be set within a range of 14600 to 19000 min?1 when a motor torque is within a torque range during practical operation.

Abstract: A ring element includes a convex, in particular rounded, surface element for arrangement on at least one axial end region of a winding section of an electric motor rotor. The surface element provides a minimum radius curvature for supporting an inner layer of a rotor winding on the winding head. An insulating lamination element for an electric motor rotor onto which a rotor winding is intended to be wound includes the ring element. An electric motor, in particular a universal motor, includes a rotor with a rotor winding having the ring element. An electric machine tool, in particular a handheld electric machine tool such as an angle grinder, a drill, a saw or the like, includes the electric motor.

Abstract: According to an aspect of the invention, an electric power tool which includes a brushless direct-current motor and a drive circuit that supplies drive power to the motor, and which rotates or drives a tool, characterized in that the drive circuit includes plural switching elements, and is arranged on a board provided in a grip portion of a housing or below the grip portion; and an electric fan is provided in the vicinity of the switching element for cooling the switching element.

Abstract: A power tool includes a brushless DC motor housed inside an upper body of the tool housing and a control unit housed inside a handle of the housing, the control unit including a micro-controller mounted on a control circuit board, a power unit electronically coupled to the micro-controller and mounted on a power circuit board arranged substantially parallel the control circuit board inside the handle, and a heat sink in thermal contact with the power unit. An input unit may be mounted directly on the control circuit board. An upper portion of the heat sink extending towards the upper body of the housing may include a tab protruding underneath a fan assembly of the motor to transfer heat from the power unit to the airflow created by the fan.

Abstract: An electric motor for use with a power tool includes a rotor having a body and a plurality of magnets coupled to the body, a stator having a plurality of electromagnetic coils surrounding the rotor, and an output shaft coupled to the rotor for rotation with the rotor. The output shaft defines a longitudinal axis about which the rotor rotates. The motor also includes a balancing member coupled to the output shaft for rotation with the rotor. The balancing member substantially balances a mass of the rotor about the longitudinal axis to reduce vibrations of the electric motor during use.

Abstract: A power tool capable of preventing entrance of foreign matter or water etc. through the air hole as much as possible is provided. To prevent foreign matter from entering a housing 2 through a outlet 22, a first through hole 70b penetrating a main wall 71 is formed on a part of the main wall 71 of a cover 70 covering the outlet 22, second through holes 70c are formed on: a part closest to a front end portion of the cover 70; an end portion in the extending direction of the handle of the cover 70; and an end portion in the opposite direction to the extending direction of the handle of the cover 70.

Abstract: An electric motor for use with a power tool includes a rotor having a body, a stator having a plurality of electromagnetic coils surrounding the rotor, an output shaft coupled to the rotor for rotation with the rotor, and a plurality of magnets positioned within the body of the rotor. The motor also includes a mechanical magnet holder coupled to at least one of the rotor and the output shaft to engage each of the plurality of magnets. The mechanical magnet holder inhibits movement of the plurality of magnets out of the body of the rotor.

Abstract: A power tool in the form of an electric disc grinder has a driving motor for driving a grinding wheel that performs a grinding or polishing operation on a workpiece, a motor housing that houses the driving motor, a rear cover that is mounted to a rear end region of the motor housing and forms together with the motor housing a grip to be held by a user, and a power switch including an operating lever that extends longitudinally on both of the motor housing and the rear cover and is operated by gripping with a user's hand, and a switch part that is disposed within the rear cover and actuated by operation of the operating lever to control energization of the driving motor and connected to the operating lever through an opening.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a rigid axial-play setting unit mounted on an upper major surface of a cylinder head, and having upper and lower limit defining members that are spaced apart from each other by an axial play route, a suspending mount configured to keep the fan motor oriented in a rotary axis, and having a lug which extends radially into the axial play route to divide the axial play route into proximate and distal regions, and an elastomeric damper unit having upper and lower damping members respectively disposed in the distal and proximate regions. By virtue of the rigid mount supporting the fan motor, and the resilient damper unit coupling the mount and the cylinder head, the fan motor is firmly secured to the cylinder head, and axial oscillation of the fan motor is reduced.

Abstract: The invention relates to an electric machine tool, particularly an angle grinder, having an electric motor that can be forcibly cooled by a cooling air flow. The electric motor includes an armature and a field iron package disposed concentrically to the armature which are disposed in a cooling air flow. The invention proposes that the armature and the field iron package be disposed in series in the cooling air flow.

Abstract: In an electric power tool in which an electric motor is mounted in a housing that has a half-split structure, positions of middle screw fastening portions when a left housing and a right housing are fixed to each other by screws are located between a front protruding coil portion and a rear protruding coil portion. In other words, the protruding coil portions are located on either the front side or the rear side of the position of middle screw fastening portions when the left and right housings are fixed to each other by the screws. Accordingly, it is possible to effectively utilize a dead space that is likely to be formed between the front protruding coil portion and the rear protruding coil portion.

Abstract: An electric-motor arrangement for a medical, in particular dental, handpiece that has a motor housing and a rotor which is arranged in the motor housing so that it can be rotated about an axis via a first bearing and a second bearing. A stator is arranged around the rotor in relation to the axis. The first bearing is received in a first bearing flange, and the second bearing is received in a second bearing flange. Both bearing flanges are composed of metal and adjoin the motor housing directly by way of their circumferential faces. As a result, running noise and vibrations can be reduced. Moreover, premature wear and/or failure can be prevented.

Abstract: In a brushless motor, a rotor core is fixed to a shaft. Through holes are formed in the rotor core, and permanent magnets are inserted to be fixed in place in the through holes. A stator core is fixed to an outer circumferential surface of the rotor core such that the stator core faces the outer circumferential surface of the rotor core. Stator coils are provided on the stator core via insulators so as to configure magnetic flux generating portions. A cooling fan is provided in front of a stator which is configured by the stator core and the stator coils. Axial position of blades of the fan and axial positions of the rotor core and the permanent magnets partially overlap each other in their positions.

Abstract: An electric tool may include a tool main body configured to be able to mount a battery pack. The tool main body may include an electric motor, a controller for controlling the electric motor, and a centrifugal fan rotatably driven by the electric motor for producing a flow of air. The controller may be positioned such that the flow of air produced by the centrifugal fan is applied to at least a part of the controller.

Abstract: The portable abrasive tool comprises a flat motor composed of a rotor having a coil disk in the form of a disk on which multiple coil pieces are arranged in the circumferential direction about the output shaft when seen in the direction of the axis line of the output shaft and a stator having magnets arranged in the manner that the magnetic flux passes through the coil disk in the direction of the axis line of the output shaft, and an abrasive part connected to one end of the output shaft of the flat motor.

Abstract: A power tool includes a shaft rotatable about an axis and configured to drive a tool element, a motor armature, a first field coil, and a second field coil. First and second symmetrical stack parts each include a pole piece that is configured to receive respective first and second field coils. The first field coil is coupled to the pole piece of the first stack part such that portions of the first field coil extend past pole tips of the first stack part, and the second field coil is coupled to the pole piece of the second stack part such that portions of the second field coil extend past pole tips of the second stack part. The first stack part is coupled to the second stack part such that the first stack part and the second stack part together define an aperture that surrounds the shaft axis.

Abstract: A toothbrush drive includes a first drive component for generating a magnetic field and a second drive component driven in both a translational and rotational manner under the influence of the magnetic field. A transmission element is deflected out of a predetermined position for transmission of both translational and rotary movement of the second drive component. The deflection of the transmission element varies along its longitudinal axis. A transmission element can be deflected out of a predefined position for transmission of a translatory movement and a rotational movement of the second drive component to the brush element along a longitudinal axis of the transmission element. The deflection of the transmission element out of the predefined position is varied along the longitudinal axis of the transmission element.

Abstract: The present disclosure includes an adapter and associated method of use for mobile unit (MU) charging and communication that enables multiple connector types to be utilized with a single charger or charging station. The adapter enables standardization of a connector scheme on newer MUs while maintaining compatibility with current or older MU devices. Specifically, the adapter resides between the MU and a charging device or station. The adapter may include various connector features mimicking connectors of various different MUs, thus allowing it to interface with a device of a different connector design. Advantageously, the adapter enables enterprises to deploy various cradles throughout facilities and achieves universal connections for a plurality of different MUs. In an exemplary embodiment, the adapter provides connectivity between various MUs and their associated cradles and a hook and pivoting latching system.

Abstract: An electric hand tool has an electric consumer, a movable operating element and a control unit for controlling a current flow between the energy store and the consumer on the basis of the position of the operating element. The control unit is constructed separately from the operating element and the mechanical position of the operating element is converted into an electrical control signal in the control unit.

Abstract: An inverter device includes: an inverter circuit configured to perform ON/OFF operations with a preset duty cycle to convert a DC power into an AC power and output the AC power to an AC motor; and a controller configured to change a duty cycle of the ON/OFF operations.

Abstract: In a handheld power tool having an electronically commutated drive motor, which has a stator provided with a motor winding and a rotor provided with a permanent magnet, the permanent magnet has an axial extension which is configured to enable a detection of a particular rotational position of the rotor.

Abstract: A method of operating a rotary tool driven by a brushless motor including a DC brushless motor for rotationally driving a rotary bit, a torque setting clutch mechanism, a drive switch for drive-controlling a drive control circuit of the brushless motor, and a control means to rotationally drive the brushless motor by an operation of the drive switch and wherein the method includes a first step for stop-controlling of the drive control circuit, a second step for rotating forward or in reverse the brushless motor through the control and a third step for control-operating a semiconductor of an inverter circuit provided in the drive control circuit to short-circuit the magnetizing windings of the brushless motor, thus braking the rotor of the brushless motor and stopping the brushless motor.

Abstract: A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing having an inner surface. The brushless motor has an outer surface disposed in the housing, a first endface near the air intake hole, and a second endface near the air exhaust hole. The cover member covers at least one of the first endface and the second endface for preventing dust from entering the brushless motor. The inner surface of the housing and outer surface of the brushless motor define a circulation path providing communication between the air intake hole and the air exhaust hole.

Abstract: The invention relates to an electrical device, especially an electric tool, which has a motor unit provided with a motor housing, and a receiving unit for receiving at least one drive element. According to the invention, the electrical device includes a motor sleeve for coupling the motor unit to the receiving unit.

Abstract: In a power tool having an electronically commutated drive motor to which stator components are assigned, which stator components have a stator core equipped with an insulating body, a positioning unit is provided on the insulating body. The positioning unit is designed to enable a positioning of a circuit board, which is assigned to the drive motor, in a predefined alignment on the insulating body.