Abstract: An electric tool may include a battery mount portion having a guide groove structure that can be slidably fitted with a guide projection structure of a rechargeable battery. A reinforcing member may be attached to the guide groove structure of the battery mount portion and may include a connecting structure for detachably connecting the reinforcing member to the guide groove structure.

Abstract: A work tool, in which any one of a plurality of operation modes is selectable and which is configured to operate according to the selected operation mode, includes a switch for driving a tool accessory, an operation member, a mode switching member and a movement restricting mechanism. The operation member is configured to be held in an off-position in a non-pressed state and configured to move to an on-position in response to an external pressing operation. The mode switching member is configured to be switched between a plurality of switching positions in response to an external operation, the switching positions respectively corresponding to the operation modes. The movement restricting mechanism is configured to restrict a movement of the operation member from the off-position to the on-position in interlock with a switching operation of the mode switching member.

Abstract: An electrical hammer (100) comprises a main housing (101), a hand grip (500) connected to the main housing (101) via a compression coil spring (321). In the electrical hammer (100), a hammer bit (119) is driven by a first motion converting mechanism (120) and thereby a hammering operation is performed. During the hammering operation, the hand grip (500) is moved against the main housing (101) in a state that biasing force of the compression coil spring (321) is applied on the hand grip (500). Further, the electrical hammer (100) comprises a second motion converting mechanism (220) which drives a counterweight (231).

Abstract: A technique for making a handle vibration-proof while avoiding size increase is provided in an impact tool. The impact tool has a striking mechanism part for driving a tool bit in its axial direction, a motor for driving the striking mechanism part, a tool body housing the motor and striking mechanism part, an outer shell housing covering part of the tool body, a handle that is integrally formed with the outer shell housing and extends transversely to the axial direction, a first handle end portion formed on one extending end of the handle, a second handle end portion formed on the other extending end of the handle, a first elastic element that connects the first handle end portion and tool body for relative movement in the axial direction, and a second elastic element that connects the second handle end portion and tool body for relative movement in the axial direction.

Abstract: A power tool includes a motor, a housing, a battery mounting part, and a battery protection part. The battery mounting part is provided to the housing on an opposite side from a working axis across the motor in an extending direction of a rotation axis of the motor. The battery mounting part is configured such that one end portion of at least one battery is mounted to the battery mounting part and an opposite end portion of the at least one battery in the extending direction of the rotation axis is exposed from the housing. The battery protection part is provided to an outer surface portion of the housing and configured to protect at least one corner region of the opposite end portion of the at least one battery against external force when the one end portion is mounted to the battery mounting part.

Abstract: A dust collecting device 140 is provided which is attached to an electric hammer 101 having a side handle 110 which is removably attached to a body 103. The dust collecting device 140 has a dust collecting hood 141 and a hose holder 145. The side handle 110 has a mounting ring 111 which is mounted on the body 103, a grip 121 and a grip securing part 131. The grip 121 is secured by moving relative to the grip securing part 131 in a direction crossing an axial direction of the hammer bit 200. By this relative movement for securing the grip 121, the hose holder 145 is held between the grip 121 and the grip securing part 131.

Abstract: An impact tool is provided which has a driving mechanism 120, 140 that drives a tool bit 119, a motor 110 that drives the driving mechanism 120, 140, an inner housing 103 that houses the driving mechanism 120, 140, an outer housing 101 that has an internal space for housing the inner housing 103 and the motor 110, an opening 193 that leads from the outside to the internal space of the outer housing 101, and a covering member 195 that covers the opening 193.

Abstract: The representative impact tool has a motor, a driving mechanism, a body housing and a handle, and part of the motor and part of the handle are disposed on an axis of a tool accessory. The impact tool has an outer housing that is disposed to cover the outside of the body housing and connected to the body housing via an elastic element so as to be allowed to move with respect to the body housing in an axial direction of the tool accessory, and the handle is integrally connected to the outer housing. The body housing has an exposed region in which at least part of a region of the body housing corresponding to at least one of the motor and the driving mechanism, is not covered by the outer housing.

Abstract: A power tool includes a drilling tool and a dust collector configured to be removably attached to the drilling tool. The dust collector includes a dust collector body, a passage part provided in the dust collector body and having elasticity, and a storing part configured to be removably attached to the dust collector body and to store dust. The passage part includes a drilling tool mounting port part configured to be connected to the drilling tool while pressing a specified region of the drilling tool, and a storing part mounting port part configured to be connected to the storing part while pressing a specified region of the storing part. Air containing the dust is led through the dust collector body to the storing part, and the air from which the dust has been separated in the storing part is led through the passage part into the drilling tool.

Abstract: A power tool, such as a rotary hammer or hammer drill, includes a first housing that contains a motor and a drive mechanism for linearly reciprocally driving a tool accessory, and a second housing that includes a handle, a first portion and a second portion. At least one elastic element connects the first and second housings such that the handle is biased away from the first housing. A first set of sliding contact surfaces is defined on or connected to the first housing and the first portion of the second housing. A second set of sliding contact surfaces is defined on or connected to the first housing and the second portion of the second housing. The first and second sets of sliding contact surfaces are located on opposite sides of the motor such that the rotational axis of the motor intersects the first and second sets of sliding contact surfaces.

Abstract: A hammer drill includes a switch, an operation member, a lock member, a mode switching member and a linked member. The operation member is normally held in an OFF position and moves to an ON position in response to an external pressing operation. The lock member moves in response to an external operation between a locking position, where the lock member is capable of locking the operation member in the ON position, and a non-locking position, where the lock member is incapable of locking the operation member. The linked member moves to an allowing position for allowing a movement of the lock member when the mode switching member is switched to a switching position corresponding to a hammer mode, and moves to an inhibiting position for inhibiting the movement of the lock member when the mode switching member is switched to a switching position corresponding to a drill mode.

Abstract: A power tool contains a brushless motor that includes a stator having a stack thickness and an outer diameter, a rotor having a diameter, and a motor shaft extending from the rotor and having a rotational axis. A drive mechanism is operably coupled to the motor shaft and is configured to drive a tool accessory in relation to a drive axis. A first housing houses the motor and the drive mechanism. The drive axis does not intersect the brushless motor, but the rotational axis of the motor shaft intersects the drive axis. The outer diameter of the stator is at least five times greater than the stack thickness. Furthermore, the diameter of the rotor is greater than the stack thickness.

Abstract: It is an object of the invention to provide an impact tool having a rational mechanism in an idling state. According to the representative invention, in an idling state defined as a state in which a tool accessory 119 is not pressed against a workpiece and an impact bolt 145 transmits a striking force to the tool accessory 119, the tool accessory retainer 510 moves with respect to a tool accessory holder 117 by movement of the tool accessory 119 in the longitudinal direction, so that the striking force is cushioned.

Abstract: An impact tool is provided which has a driving mechanism, that drives a tool bit, a motor that drives the driving mechanism, an inner housing that houses the driving mechanism, an outer housing that has an internal space for housing the inner housing and the motor, an opening that leads from the outside to the internal space of the outer housing, and a covering member that covers the opening.

Abstract: A dust collection device for an electric power tool includes a main body case that includes an air exhaust port and is attachable to a hammer drill, a dust box provided therein with a filter, and a tubular sliding portion that has a base end connected to a connection port provided on the main body case, that includes a suction port at its front end, and that is slidable in a front-rear direction, and includes therein a dust collection path formed to pass from the suction port through the filter to the air exhaust port. The connection port is provided on a side surface of the main body case, and connected to a flexible hose serving as a base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port.

Abstract: A work tool includes a driving motor, a rotary shaft member configured to be rotationally driven by the driving motor, a swinging member configured to be caused to swing by rotation of the rotary shaft member, a tool accessory driving mechanism configured to drive a tool accessory by swinging of the swinging member, a body housing the driving motor, the rotary shaft member, the swinging member and the tool accessory driving mechanism, and a vibration reducing mechanism configured to reduce vibration caused in the body. The vibration reducing mechanism includes a dynamic vibration reducer having an elastic member and a weight, and a connecting member connecting the weight and the swinging member. The vibration reducing mechanism is configured to reciprocate the weight via the connecting member by the swinging of the swinging member.

Abstract: A dust collector includes a main body, a sliding part, and a communication passage. The main body includes an internal region disposed between a power tool and a dust storing region. The sliding part is held by the main body so as to be slidable in a first direction while partly protruding out of the main body through an opening and partly disposed in the internal region. The communication passage extends in a second direction crossing the first direction within the internal region. When the sliding part is placed at a closest position, a distance in the first direction between the opening and an innermost end of the sliding part is longer than a distance between the opening and the communication passage. The sliding part includes an interference avoiding part configured to avoid interference with the communication passage when the sliding part is placed at the closest position.

Abstract: An object of the invention is to provide an impact tool improved in vibration-proofing structure of a handle. A representative impact tool has a tool body and handle. The handle has a handle body and pair of grips that extend in a direction crossing an axial direction of a tool accessory, designed to be held by user's right and left hands. The handle body has a first part to which the grips are connected in a fixed manner and a second part that is connected to the tool body in a fixed manner. The first part is supported against the tool body via an elastic member and is allowed to move with respect to the tool body and the second part while being biased by an elastic force of the elastic member. A current supply cable, supplying current to a motor, is installed on the second part.

Abstract: A hammer drill includes a housing, a tool holder, a hammering member, a gear, and a conversion member. The gear is switched to a first state where a rotation of the intermediate shaft is transmitted and a second state where the rotation of the intermediate shaft is not transmitted, and a mode switching member is configured to perform a switching operation of the state of the gear from an outside of the housing. The switching of the state of the gear by the mode switching member provides at least two operation modes of a hammer drill mode where the gear integrally rotates with the intermediate shaft to generate the rotation and a reciprocation of the hammering member on the tool holder and a hammer mode where the gear is separated from the rotation of the intermediate shaft to generate only the reciprocation of the hammering member to be selectable.

Abstract: An improved technique relating to mounting of a battery in an impact tool which has a handle configured to move with respect to a tool body. A hammer drill has a body, a handle part and a battery mounting part. The handle part is configured to slide with respect to the body under a biasing force of a coil spring. The battery mounting part has a plurality of mounting parts. At least one of the mounting parts of the battery mounting part is connected to the handle part and slides together with the handle part with respect to the body during operation.