Abstract: The invention relates to a machine tool having a two-part housing. The housing parts of the machine tool are connected by a connection device that has at least two connection projections. According to the invention, the connection projections in one housing part are arranged adjacent to each other and engage in corresponding connection recesses, in a positive fit, arranged in the other housing part.

Abstract: A variable speed switch includes a switch main body portion which is accommodated in a housing of an electric power tool and mounted to the housing so as to be capable of relative movement, and a load sensor which is provided in the switch main body portion and capable of outputting an electric signal in proportion to the amount of distortion caused by a pressing force. The switch operating portion is mounted on the surface of the housing so as to be capable of relative displacement with respect to the housing and transmits a pressing force applied to the switch operating portion to the load sensor, with the maximum displacement amount of the switch operating portion being set to equal to or less than 5 mm.

Abstract: A portable power drill comprises a housing, a drilling implement carrying drive spindle, and two individually powered and controlled motors for rotating and axially feeding the drive spindle. The drive spindle is rotative and axially displaceable relative to the housing and connected to the drive and feed motors via angle gears including two bevel gears supported on the drive spindle. The feed via an axially locked but rotative nut piece and an external thread on the drive spindle, whereas the drive motor is drivingly connected to the drive spindle via longitudinal keyways on the drive spindle and mating splines in one of the bevel gears. The drive motor and the feed motor are electric motors controlled and monitored by a programmable control unit.

Abstract: A power tool handle is selectively connectable to a power tool head. The power tool handle includes a grip portion defining a longitudinal axis, and a motor housed within the handle and including a drive shaft driven by the motor, the drive shaft mounted for rotation within the handle and defining an axis of rotation substantially parallel to the longitudinal axis of the handle. The power tool handle also includes a trigger disposed proximate the grip portion for actuating the motor, and a button movable in a direction defining an axis substantially parallel to the longitudinal axis to a first position when the tool head is coupled to the handle and to a second position when the tool head is removed from the handle. In the first position, the trigger can actuate the motor, and in the second position, the trigger is inhibited from actuating the motor.

Abstract: A portable power tool, in particular a portable screwdriver, includes a tool-holding fixture, at least one active drive unit that has at least one motor unit, and at least one electric switching element configured to activate a rotational movement of the motor unit. The portable power tool further includes at least one mechanical switching element configured to transmit a switching signal along an axis of rotation of the tool-holding fixture to the electric switching element over at least part of the active drive unit.

Abstract: A rotary tool includes an externally operable operation switch; a motor serving as a power source; a power transfer block for transferring the rotation of the motor; a load detection unit for detecting an amount of load of the motor; and a control unit for controlling the motor. The control unit is configured to perform an operation control by which the motor is controlled so that a rotation speed of the motor is increased in proportion to the operation amount of the operation switch and a feedback control by which the rotation speed of the motor is controlled depending on the detection result of the load detection unit. The control unit inhibits the feedback control during the time when the operation amount of the operation switch is equal to or less than a threshold and performing the feedback control only when the operation amount of the operation switch is greater than the threshold.

Abstract: An electric power tool receives an input power from an electric power source and converts the input power to a driving power to drive an electric motor. The electric power tool further includes a manual control mechanism, a magnetic control element and a power modulation circuit. The manual control mechanism includes a trigger portion movable by depressing of a user and a magnetic element movable with the trigger portion. The magnetic control element outputs an output control signal in proportion to alterations of a magnetic field caused by movements of the magnetic element. The power modulation circuit gets the input power and modulates to the driving power controlled by the output control signal to drive the electric motor. Thus by depressing the trigger portion, output power of the electric motor can be controlled to provide precise control of rotational speed and torque alterations.

Abstract: A handheld power tool includes a drive motor embodied to provide a predetermined maximum motor power level, the handheld power tool having an associated power tool volume, and the maximum motor power level and the power tool volume forming a power-to-volume ratio of at least 270 W/l.

Abstract: A battery pack 10 includes a housing 11, a group of cells 12, a board 13, a plurality of second terminals 14, and a cover 15. An opening 16c is formed in the housing 11. The board 13 has a terminal arranging part 13A. A plurality of the second terminals 14 are arranged on the terminal arranging part 13A of the board 13. The cover 15 has a plate-like shape, and covers an area of the board 13 which is positioned between the terminal arranging part 13A and the opening 16c.

Abstract: A power tool may include a rotational force generating device and a rotational driven shaft coupled to a rotational drive shaft of the rotational force generating device via a transmission mechanism, so that the rotation of the rotational drive shaft is transmitted to the rotational driven shaft via the transmission mechanism. One or each of the rotational drive shaft and the rotational driven shaft is rotatably supported by at least three bearings.

Abstract: A plug arrangement in a machine tool comprises a primary plug part, which is associated with a drive motor, and a secondary plug part. According to the invention the primary and secondary plug parts are assembled to form a common plug part.

Abstract: A rotary impact tool includes: a hammer rotating by receiving a rotational force of a motor; an anvil rotating by receiving a rotational force of the hammer; and an end tool attached to the anvil, the rotary impact tool being constructed such that when a torque of a value not less than a predetermined value is applied to the anvil from the outside, the hammer is disengaged from the anvil to rotate idle and applies an impact to the anvil in a rotational direction after rotating idle by a predetermined angle, the rotary impact tool including an impact detector configured to detect impacts and a speed switching device configured to switch the rotational speed of the motor, and when the impact detector detects an impact during rotation of the anvil in a tightening direction, the speed switching device switches the rotational speed of the motor from a normal speed to a low speed.

Abstract: A battery powered tool includes a housing containing a motor assembly. A fan positioned in the housing is rotated by the motor assembly. The fan has a circular ring/body and further has multiple fan blades directly connected to the circular ring body. The circular ring/body defines a concave shaped surface having the fan blades directly connected to the concave shaped surface. A housing cover includes: first and second extending walls; a slot created between the first and second extending walls; and multiple air intake vents all positioned in a lower housing zone separated from an upper housing zone by the slot. An electronics module is positioned in the housing proximate to the housing cover lower housing zone such that air entering the intake vents passes only through the lower housing zone and past the electronics module to cool the electronics module before entering the fan.

Abstract: A power tool includes a variable speed motor coupled to a drive member. A power circuit electrically connects the variable speed motor to a power source. A variable speed signal generator generates a variable speed control signal indicating an operating speed for the motor. The operating speed is dependent upon a value of a variable speed selection signal generated by a slide switch. The slide switch includes a linear slide potentiometer for generating the variable speed selection signal. An actuator slides along the potentiometer to control the value of the selection signal. The slide switch includes an ON/OFF contact and a lever arm that is movable into and out of contact with the ON/OFF contact. The actuator is configured to prevent the lever arm from contacting the ON/OFF contact when the actuator is in an OFF position in relation to the slide potentiometer thereby opening the power circuit.

Abstract: The disclosure relates to a method of assembling a hand machine tool having (i) an intermediate flange that includes (i) at least one base body having a slot-shaped opening extending in a bearing position and in a bearing, (ii) an intermediate shaft assembly that includes an intermediate shaft and a wobble bearing having a wobble pin, and (iii) a drive piston. The method includes sliding the drive piston onto the wobble pin, introducing the wobble pin into the slot-shaped opening such that the drive piston slides into the at least one base body, and inserting, in an assembly direction corresponding to a direction of a longitudinal axis of the base body, the intermediate shaft of the intermediate shaft assembly into a second base body of the immediate flange.

Abstract: An apparatus is disclosed including a motor housing structured to receive at least a portion of an electric motor, a tool housing including a first half and a second half, wherein the tool housing defines an end taper, a tool attachment in mechanical communication with the electric motor, and a retention member including an inner taper structured to interface with the end taper of the tool housing to resist relative motion between the tool housing and the motor housing.

Abstract: Embodiments provide methods, apparatuses, and systems for battery operated tools, such as chainsaws, are provided. In accordance with embodiments herein, a chainsaw may include various components, such as a control board having a controller, a battery terminal block, a motor, a brake switch, a trigger switch, and/or other components. In various embodiments, components of the battery operated tool are provided that improve the capabilities and/or operation of the tool.

Abstract: A tool apparatus includes a substructure at least partially enclosing an electric motor, the electric motor in selective electric communication with a battery, a tool head in mechanical connection with the electric motor, a tool housing defining an inner cavity, wherein the housing is structured to receive the substructure within the inner cavity, and a superstructure having an inner taper configured to receive an outer taper of the tool housing to retain the tool housing relative to the substructure.

Abstract: In a grinder, a terminal plate is projectingly provided on an upper surface of a controller. A connection portion, which accommodates a female terminal and includes a slit into which the terminal plate enters, is projectingly provided on a lower surface of a main body portion of a switch block. At the time of assembling of the switch block and the controller, the terminal plate that enters into the connection portion from the slit is inserted into and connected to the female terminal. First and second projections that cover a formation surface of the slit in the connection portion when the connection portion is inserted with and connected to the terminal plate are formed on the upper surface of the controller.

Abstract: The universal control module is designed for controlling the operation of a plurality of motors and/or configured for a plurality of different motor applications. In an example, the control module is configurable within a housing of a power tool. The control module includes a top cover, a bottom cover and a printed circuit board (PCB) with control components thereon. The control module includes a spacer configured between the top and bottom covers and attached to the PCB for providing tolerances for the control components during a soldering process to fixedly attach the control components to the PCB.

Abstract: A variable speed switch includes a switch main body portion which is accommodated in a housing of an electric power tool and mounted to the housing so as to be capable of relative movement, and a load sensor which is provided in the switch main body portion and capable of outputting an electric signal in proportion to the amount of distortion caused by a pressing force. The switch operating portion is mounted on the surface of the housing so as to be capable of relative displacement with respect to the housing and transmits a pressing force applied to the switch operating portion to the load sensor, with the maximum displacement amount of the switch operating portion being set to equal to or less than 5 mm.

Abstract: An electric tool includes a housing accommodating a motor, and a break device and an operational member to turn on and turn off a drive switch of the motor. The brake device includes a brake plate fixed to an output shaft of the motor, a brake member is capable of moving toward and away from the brake plate during rotation, and an urging unit urging the brake member toward an abutment position where the brake member abuts on the brake plate. The operational member is provided with a press member that comes into abutment on the brake member through an operation of turning on the drive switch of the motor and rotates the brake member in such a rotational direction as to move away from the brake plate against the urging of the urging unit.

Abstract: An electric tool may include a tubular housing, a motor disposed within the housing, and a tool holder rotatably driven by the motor and capable of holding an end tool. A shoe may be supported by the housing and may determine a protruding length of the end tool from one end of the housing. A battery mount portion may be disposed at the other end of the housing. The battery may be mounted to the battery mount portion as the battery is slid relative to the battery mount portion along a direction intersecting the extending direction of the housing.

Abstract: A power saw having a reciprocating blade, including a housing having a handle portion for holding the saw; a variable speed motor in the housing for driving the reciprocating blade; a mechanism configured to move the reciprocating blade in a non-linear path; an electronic controller for controlling the operation of the motor; a trigger switch configured to provide an electrical signal to the controller that is proportional to the amount of travel that the switch is moved, wherein the signal causes the controller to operate the motor through a range of operating speeds; and a mode switch operatively connected to the controller and including a first mode providing normal operating speeds responsive to the trigger switch being selectively moved through its range of travel, and a second mode wherein the operating speeds are within the range of about 50% to about 80% of the normal operating speeds.

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 handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.

Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The rotary hammer also includes a retainer received within the spindle for selectively securing the striker in an idle position in which it is inhibited from reciprocating within the spindle, and an O-ring positioned between the retainer and the spindle. The O-ring is disposed around an outer peripheral surface of the anvil. The O-ring is compressible in response to the striker assuming the idle position. The compressed O-ring imparts a frictional force on the outer peripheral surface of the anvil to decelerate the anvil.

Abstract: The invention discloses a hand-held tool having a housing with a gear head, having a motor shaft that can be driven in rotation by a motor and that can be coupled, by means of an eccentric coupling mechanism, to a tool spindle in order to drive the latter, wherein the tool spindle can be driven in an oscillatory rotating manner about the longitudinal axis thereof and is configured to receive a tool, wherein the eccentric coupling mechanism has a coupling member which is coupled to the motor shaft and to the tool spindle, and wherein the coupling member is furthermore mounted pivotably on a carrier element coupled to the housing. The carrier element is preferably capable of being moved in translation or pivoted relative to the housing.

Abstract: A power tool includes a small-size lithium ion secondary battery used as its driving source, and at least one lithium ion secondary battery having a diameter of 14 mm is disposed inside a grip portion of a main body of the power tool. The lithium ion secondary battery has a sufficient output characteristic required for driving the power tool. When a switch installed in the main body of the power tool is operated by a user, electric power is supplied to a driving unit including a motor so that the power tool is activated. The lithium ion secondary battery is of a pack type, or is directly housed inside the grip portion, and the grip portion, which houses three of the lithium ion secondary batteries, is designed to have a diameter of 51.8 mm or less.

Abstract: A power tool includes: a handle housing housing a battery and having a first grip part; a motor driven by electric power of the battery; a power transmission system; a main housing housing the handle housing, the motor and the power transmission system and having a second grip part; and a turning mechanism turnably connected at a rear end part of the main housing and a front end part of the handle housing. The power tool is operable at least in a state that the main housing and the handle housing are disposed straight and a state that they are disposed to be folded. In the folded state, the second grip part is positioned in front of the first grip part in an axial direction of the main housing. A trigger and a forward/reverse switch that control the rotation of the motor are disposed on the handle housing side.

Abstract: A power tool has a mechanism for forcing a battery pack at least partially from a cavity that receives a battery pack. A biasing member is in the cavity. A member for retaining the biasing member is also in the cavity. The biasing member forces the battery pack at least partially from the cavity. When the battery pack is locked onto the frame, the biasing member is in a compressed condition and when the battery pack is an unlocked position, the biasing member forces the battery pack at least partially from the frame.

Abstract: An electric power tool (1) includes a brushless direct-current motor (3) and a drive circuit that supplies drive power to the motor, the power tool rotates or drives a tool, whereby the drive circuit includes plural switching elements (21), and is arranged on a board (9) provided in a grip portion of a housing or below the grip portion; and an electric fan (22) is provided in the vicinity of the switching element for cooling the switching element.

Abstract: A power tool an electric motor retained within a housing. A rechargeable battery is retained within the housing that is operatively connected to the electric motor. A power input port is supported within the housing that is operatively connected to the rechargeable battery. The power input port is configured to supply power to the rechargeable battery from an external power source. The rechargeable battery comprises a lithium based battery, and the power input port comprises a universal serial bus (USB) port configured to receive a USB connector.

Abstract: A motor control device includes a target value setting unit, a measuring unit, a deviation calculating unit, a proportional control unit, an integral control unit, and a disabling unit. The deviation calculating unit calculates a deviation between a target value, set by the target value setting unit, and a measured value for rotational speed, measured by the measuring unit. The disabling unit disables proportional control, performed by the proportional control unit, when the deviation, calculated by the deviation calculating unit, is a value within a predetermined range.

Abstract: A power tool having an electric motor with a static stall torque and a housing, a tool holder being mounted on the housing rotatably about an axis of rotation, the electric motor being connected to the tool holder, a handle for an operator being provided on the housing, the handle having a handle length, characterized in that the ratio of the static stall torque to the handle length is greater than 400 Nm/m.

Abstract: The cover is provided with engaging pieces that engage with a recessed groove provided on the outer peripheral surface of a hammer case and hold the cover on the hammer case to prevent the cover from being detached. The cover is also provided with bumper receiving portions extending from the front end of the cover and allowing the bumper to be externally attached to the cover, and engaging claws formed on the bumper receiving portions and engaging with engaged recessed portions formed on the inner peripheral surface of the bumper for holding the bumper to prevent the bumper from being detached from the cover. The cover with the bumper attached to the bumper receiving portions is provided to the hammer case.

Abstract: According to an aspect of the present invention, there is provided a rotary striking tool includes: a motor; an oil pulse unit that is driven by the motor; an output shaft that is coupled to the oil pulse unit so that a tip tool can be attached to the output shaft; a first detection unit that detects a rotation angle of the motor and outputs a first output signal; a second detection unit that detects an impact generated at the oil pulse unit and outputs a second output signal; and a control unit that controls a rotation of the motor, wherein the control unit uses a portion of the second output signal based on the first output signal for control of the rotation of the motor.

Abstract: Three battery cells can be arranged such that one battery cell is situated on the front side of a handle portion and that the remaining two battery cells are situated on the rear side thereof while being arranged laterally side by side. Also, a handle portion can be generally of a triangular cross-sectional configuration whose apex portion is situated on the front side of the handle portion and whose base portion is situated on the rear side thereof; and the handle portion is grasped by bringing fingertips into contact with the apex portion (11a) on the front side.

Abstract: A machine tool, in particular a powered hand tool, has an electric drive motor to which pole shoes are assigned in order to conduct a magnetic field. Furthermore, a fan wheel is provided in order to produce a stream of cooling air. In the housing, an air-guiding element forms a portion of the flow path for the stream of cooling air. According to the invention, the air-guiding element at least partially covers the pole shoes.

Abstract: An electric power tool is provided. The electric power tool includes a motor housing having inlet and outlet slots and an electric motor received within the motor housing. The electric motor is configured to drive a working spindle. The electric power tool includes a ventilation device disposed within the motor housing and configured to generate an airflow between the inlet and outlet slots. The electric power tool also includes an airflow gear case attached to the motor housing. The airflow gear case having an opening to receive the working spindle and bearings. An airflow sleeve covers the airflow gear case, wherein at least a portion of the airflow received from the motor housing is introduced along an airflow path defined by the airflow gear case and the airflow sleeve.

Abstract: A battery device is constituted by connecting such cell assemblies in parallel as each includes: a first cell group having a plurality of cells connected in series; a housing container for housing the first cell group; current detector housed in the container for detecting a current to flow through the first cell group; a switching element connected with the first cell group for turning ON/OFF the current to flow through the first cell group; and a controller for controlling the ON/OFF of the switching element in response to the output signal of the current detector.

Abstract: A safety apparatus for a portable tool having an internal combustion engine has at least one accelerometer providing a measurement of an acceleration of the portable tool in at least one plane or axis. An electronic controller is connected to an output of the accelerometer so as to receive analog or digital information. A generator is driven by the internal combustion engine so as to supply power to the accelerometer. A management card processes the analog or digital information so as to activate the system acting on an ignition exciter box so as to nearly instantaneously stop the internal combustion engine when the acceleration of the portable tool exceeds a predetermined level.

Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.

Abstract: A power tool has a mechanism for ejecting a battery pack which includes a receiving frame which defines a cavity to receive a battery pack. A receiving member is adjacent the cavity. The receiving member meshes with a member on the battery pack to hold the battery pack in the cavity. A biasing member is in the cavity adjacent the receiving member. The biasing member ejects the battery pack from the ejecting mechanism. A member retains the biasing member in the cavity. The member guides a portion of the battery pack meshing with the receiving member into contact with the biasing member such that when the battery pack is locked onto the frame, the biasing member is in a compressed condition and when the battery pack is an unlocked position, the biasing member ejects the battery pack from the frame.

Abstract: A hand-held power tool has a tool member and a motor drivingly connected to the tool member, wherein the motor is arranged in a motor housing. A battery for driving the tool member is provided. A guide shaft has arranged on its first end the battery and on its second end the motor housing and the tool member. A rotatably power output part arranged on the motor housing is drivingly connected to the motor. The power output part supports the tool member. Cooling air is sucked through the guide shaft into the motor housing. Between the power output part and the motor housing an annular air exit gap is formed through which the cooling air exits the motor housing. At least one guide vane that projects into the annular air exit gap is provided.

Abstract: To provide a hand-held power tool which is equipped with a motor and can be used in a normal driving mode for a tip end tool and also in driving modes other than the normal driving mode. A power tool in which a tip end tool is driven by a motor to thereby perform a predetermined machining process on a workpiece, wherein the motor is a dual rotor motor comprising: an inner rotor; an outer rotor; and a stator including a driving coil mechanism, with the inner rotor and the outer rotor being coaxially disposed.

Abstract: In a power tool including: a housing having a body portion which houses a motor and a handle portion extending downward from the body portion; an output portion driven at the front of the motor; and a trigger switch which controls power supply from a battery to the motor, the motor, the battery, and the trigger switch are arranged so as to overlap each other in an intersecting direction with respect to a front-and-rear direction.

Abstract: A small machine tool includes a hollow housing, a holder located in the hollow housing and a driving unit coupled with the holder. The hollow housing has a holding portion and an aperture run through by a tool head. The holder has a coupling portion connected to the holding portion and a hollow shaft portion coaxial with the aperture. The hollow shaft portion includes an ancillary support member and at least one ancillary rotary member. The driving unit includes a stator coupled on the hollow shaft portion, a rotor located outside the stator, and a spindle having two ends respectively coupling with the rotor and tool head and running through the hollow shaft portion, ancillary support member and ancillary rotary member. The spindle is driven by the rotor to drive the tool head to rotate.

Abstract: An electrical device, such as a nailer device, has a motor and a gear housing containing a transmission mechanism. The transmission mechanism is coupled to the motor for driving an impact member. The transmission mechanism includes a shaft having a through-hole wherein a first opening of the through-hole is communicated with the interior of the gear housing and a second opening of the through-hole is communicated with an exterior of the gear housing.

Abstract: A nailer device has a housing containing a motor and a transmission mechanism. The housing has a nozzle portion with a striking rod for striking a nail arranged therein, the striking rod being moved in a reciprocating manner. A rotating shall is mounted in the housing and the rotating shaft is coupled to the output shaft of the motor through the transmission mechanism. An impact member surrounds the rotating shaft and is moved with the rotating shaft. Corresponding slots are formed on the rotating shaft and the impact member respectively and mate with each other with engagement members being contained in the corresponding slots.