Abstract: There is provided a power tool in which impact applied to a power transmission portion can be mitigated to thereby suppress components constituting the power transmission portion from being deformed and damaged. The power tool includes a brushless motor 3 having a rotation shaft portion 31 rotatable about a rotation axis A1, a housing 2 accommodating therein the brushless motor 3, a power transmission portion 6 configured to receive a rotation force of the rotation shaft portion 31 and to transmit a driving force based on the rotation force, and a driven portion 7 configured to be driven by receiving the transmitted driving force. The rotation shaft portion 31 is supported by the housing 2 so as to be movable relative to the housing 2 in an axial direction of the rotation axis A1.

Abstract: A front grease retention unit is provided under a front plunger and a wall is provided between the retention unit and a gear accommodation unit. Furthermore, a front grease receiving member is provided under the front plunger and a front metal bearing, and grease falling into the front grease receiving member is sent toward the outer circumferential face of the front plunger. The grease is pushed out by using the vertical oscillation of a front metal anchor bolt in orbital mode. A rear grease receiving member is provided under a rear plunger and a rear metal bearing, and grease falling into the rear grease receiving member is sent toward the outer circumferential face of the rear plunger. The grease in a grease reservoir groove is pushed out by using the vertical oscillation of a rear metal anchor bolt in orbital mode.

Abstract: A powered tool includes a housing, a drive source, a drive body, a sealing part, and a holding part. The drive source is rotatable in the housing. The drive body is supported in the housing and reciprocatable by a driving force of the drive source. The sealing part is in contact with an outer peripheral surface of the drive body. The holding part is positioned around the drive body. The holding part surrounds the sealing part and supports the sealing part to be in contact with the outer peripheral surface of the drive body. The holding part includes a lubrication oil accommodating part retaining a lubricant supplied to the outer peripheral surface of the drive body.

Abstract: There is provided a power tool in which impact applied to a power transmission portion can be mitigated to thereby suppress components constituting the power transmission portion from being deformed and damaged. The power tool includes a brushless motor 3 having a rotation shaft portion 31 rotatable about a rotation axis A1, a housing 2 accommodating therein the brushless motor 3, a power transmission portion 6 configured to receive a rotation force of the rotation shaft portion 31 and to transmit a driving force based on the rotation force, and a driven portion 7 configured to be driven by receiving the transmitted driving force. The rotation shaft portion 31 is supported by the housing 2 so as to be movable relative to the housing 2 in an axial direction of the rotation axis A1.

Abstract: Front feet are provided at a lower part of a cutting-machine main body via a foot holder. Furthermore, a slider positioned on a front side relative to the front feet is provided at the lower part. When a workpiece to be cut is to be cut by a blade, the cutting-machine main body is tilted so as to let the blade go down. When the cutting-machine main body is tilted, a state where the front feet are in contact with the workpiece is switched to a state where the slider is in contact with the workpiece. Then, by moving the cutting-machine main body forward while sliding the slider on the workpiece, the workpiece is cut by the blade. In the cutting operation, the front feet can get away from the workpiece. Therefore, damage of the front feet can be prevented, and the running cost can be suppressed.

Abstract: A blower apparatus includes: a housing has a discharge port for discharging an air current generated by a fan; and an air conveying tube which includes a plurality of tubular members including first and second tubular members which are connected to each other and which guides the air current discharged from the discharge port in a predetermined direction. The first tubular member includes an outer circumferential surface which is formed so as to gradually decrease in diameter. The second tubular member includes an inner circumferential surface which is formed so as to gradually increase in diameter. The first and second tubular members are connected to each other through the outer circumferential surface and the inner circumferential surface. One of the tubular members which is connected to the housing is configured to be connected to the housing at a plurality of rotational positions about an axis of the tubular member.

Abstract: A blower apparatus includes: a housing has a discharge port for discharging an air current generated by a fan; and an air conveying tube which includes a plurality of tubular members including first and second tubular members which are connected to each other and which guides the air current discharged from the discharge port in a predetermined direction. The first tubular member includes an outer circumferential surface which is formed so as to gradually decrease in diameter. The second tubular member includes an inner circumferential surface which is formed so as to gradually increase in diameter. The first and second tubular members are connected to each other through the outer circumferential surface and the inner circumferential surface. One of the tubular members which is connected to the housing is configured to be connected to the housing at a plurality of rotational positions about an axis of the tubular member.

Abstract: In an inexpensive electric tool, a thin insulating layer is provided by pouring an insulating resin material by the injection molding to extend from a rotor supporting portion 1a formed in an outer casing to an inner surface or inner and outer surfaces of the outer casing. Also, as another configuration and method, an insulating piece 12a for covering the inner surface of the rotor supporting portion is provided, and also an insulating block for covering the rotor supporting portion and supporting ribs is provided.

Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.

Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.

Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.

Abstract: In an inexpensive electric tool, a thin insulating layer is provided by pouring an insulating resin material by the injection molding to extend from a rotor supporting portion 1a formed in an outer casing to an inner surface or inner and outer surfaces of the outer casing. Also, as another configuration and method, an insulating piece 12a for covering the inner surface of the rotor supporting portion is provided, and also an insulating block for covering the rotor supporting portion and supporting ribs is provided.

Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.