Abstract: Vibrations and a reaction force transferred to an operator are effectively reduced to improve usability and operability. A grinder includes an inner housing accommodating a motor, a final output shaft located in front of the motor, a connecting shaft parallel to the final output shaft, a front elastic member located in front of the connecting shaft, and an outer housing enclosing the inner housing and holding, with the connecting shaft and the front elastic member in between, the inner housing in a relatively rotatable manner.

Abstract: A blower includes a body having a main inlet opening and a discharge opening, a motor assembly housed in the body, and an auxiliary inlet opening. The motor assembly includes a case, a motor and a fan. The case has a first opening and a second opening. The motor is housed within the case. The fan is configured to rotate in response to driving of the motor to generate a flow of air passing the main inlet opening, the first opening, the motor, the second opening and the discharge opening in this order. A first space that communicates with the main inlet opening and the first opening of the case is formed within the body. The auxiliary inlet opening is configured to introduce the air from an outside of the body into the first space.

Abstract: A blower includes a body, a motor, and a single fan configured to rotate in response to rotation of a motor shaft to discharge air through a discharge opening. The maximum rotational speed of the motor shaft is within a range of 50,000 rpm to 120,000 rpm. An area of the discharge opening is changeable by a user. The blower is configured to selectively operate in a first mode or in a second mode according to the area of the discharge opening. In the first mode, the maximum blowing force of the air discharged through the opening is within a range of 2.5 N to 5.0 N when the motor is driven at the maximum rotational speed. In the second mode, the maximum dynamic pressure of the air discharged is within a range of 30 kPa to 65 kPa when the motor is driven at the maximum rotational speed.

Abstract: A blower includes a blower body and a nozzle. The blower body includes a housing having an inlet opening, a motor housed in the housing and at least one fan housed in the housing. The nozzle is connected to the blower body and extends in an axial direction. The nozzle has a discharge opening formed in its one end in the axial direction and at least one vent hole formed in a different position from the discharge opening.

Abstract: A nozzle includes a mounting part that is configured to be attached to a blower, and a body part that is connected to the mounting part. The body part has a discharge opening and a passage for air blown out by the blower. The passage leads to the discharge opening. The body part includes a flexible tube. The flexible tube has a length of at least 15 cm and defines at least a portion of the passage.

Abstract: A connecting structure between a power tool and an attachment includes a lock mechanism. The lock mechanism is configured to be actuated when the attachment is moved in a first direction relative to the power tool in response to an attaching operation being performed on the attachment by a user, and to lock the attachment in an attachment position to be immovable in a second direction opposite to the first direction when the attachment is placed in the attachment position relative to the power tool.

Abstract: A controller 50 that controls a power tool such as, for example, a portable circular saw includes a controller case 70 that houses an electric circuit board 60. Electric elements 61, 62 that generate heat and/or are to be cooled on the electric circuit board 60 contact a thick wall portion 73b of the controller case 70, resulting in heat dissipation resulting in effective cooling of the controller 50.

Abstract: A controller 50 that controls a power tool such as, for example, a portable circular saw includes a controller case 70 that houses an electric circuit board 60. Electric elements 61, 62 that generate heat and/or are to be cooled on the electric circuit board 60 contact a thick wall portion 73b of the controller case 70, resulting in heat dissipation resulting in effective cooling of the controller 50.

Abstract: A blower includes a motor, a plurality of fans coaxially arranged in multiple stages, a housing having an inlet opening and a discharge opening, and a battery mounting part to which a battery is removably mountable. A rotational speed of the motor is within a range of 50,000 rpm to 120,000 rpm. A diameter of each of the fans is within a range of 30 mm to 70 mm. An area of the discharge opening is within a range of not less than an area of a circle having a diameter of 2.5 mm and not more than an area of a circle having a diameter of 10 mm. A blowing force of air discharged through the discharge opening is within a range of 1 N to 3 N.

Abstract: An electric power tool includes a housing, a fan, a tubular portion, and a rectifier. The housing houses a motor. The fan rotates in association with driving of the motor to generate a cooling air for the motor within the housing. The tubular portion is formed in the housing to house the fan. The rectifier is disposed to be opposed to the fan in an upstream side of the cooling air. The rectifier is divided into an inside and an outside in a radial direction of the tubular portion, the outside in the radial direction is formed of the tubular portion, and the inside in the radial direction is formed of a baffle plate assembled to the housing.

Abstract: In an electric power tool 1 including a motor 20, a cooling fan 24 for cooling the motor 20, a plurality of intake ports 11a through which outside air is introduced by use of said cooling fan 24, and a heating element 50 That generates heat, a heat sink 40 is disposed between the motor 20 and the intake port 11a. The heating element 50 is connected to the heat sink 40 through a heat pipe 30.

Abstract: A power tool includes a handle detector that is less susceptible to vibrations and is highly durable and reliable. A grinder includes a brushless motor, an inner housing accommodating the brushless motor, a rubber cylinder, a spindle driven by the brushless motor, and an outer housing enclosing the inner housing and holding the inner housing with the rubber cylinder in between. The outer housing includes a handle mount and at least one handle detector that detects a side handle attached.

Abstract: Vibrations and a reaction force transferred to an operator are effectively reduced to improve usability and operability. A grinder includes an inner housing accommodating a motor, a final output shaft located in front of the motor, a connecting shaft parallel to the final output shaft, a front elastic member located in front of the connecting shaft, and an outer housing enclosing the inner housing and holding, with the connecting shaft and the front elastic member in between, the inner housing in a relatively rotatable manner.

Abstract: A metal wire may be provided inside a hanger portion extending with an annular shape and which is integrally formed with an outer casing. An electric power tool may be prevented from falling, etc. due to deformation or breakage of the hanger portion by being reinforced by the wire.

Abstract: An electric power tool from starting unintentionally by the user, stopping a locked-on state in an unintentional situation by the user, as well as enhances the theft suppressing effect of the electric power tool. The present invention relates to a starting system including an electric power tool and a glove as a wearable device a user puts on. Only when a use permission signal is received from the glove the user puts on, the operational state of the electric power tool changes to a start standby state whereby electrical functions of the tool can then be utilized, and only in the start standby state, the electric power tool is configured to start by an on-operation thereof.

Abstract: A controller 50 that controls a power tool such as, for example, a portable circular saw includes a controller case 70 that houses an electric circuit board 60. Electric elements 61, 62 that generate heat and/or are to be cooled on the electric circuit board 60 contact a thick wall portion 73b of the controller case 70, resulting in heat dissipation resulting in effective cooling of the controller 50.

Abstract: An electric power tool from starting unintentionally by the user, stopping a locked-on state in an unintentional situation by the user, as well as enhances the theft suppressing effect of the electric power tool. The present invention relates to a starting system including an electric power tool and a glove as a wearable device a user puts on. Only when a use permission signal is received from the glove the user puts on, the operational state of the electric power tool changes to a start standby state whereby electrical functions of the tool can then be utilized, and only in the start standby state, the electric power tool is configured to start by an on-operation thereof.

Abstract: In an electric power tool 1 including a motor 20, a cooling fan 24 for cooling the motor 20, a plurality of intake ports 11a through which outside air is introduced by use of said cooling fan 24, and a heating element 50 That generates heat, a heat sink 40 is disposed between the motor 20 and the intake port 11a. The heating element 50 is connected to the heat sink 40 through a heat pipe 30.

Abstract: A separation lock member is provided in a main body cover. When a fixing cover is rotated with respect to the main body cover at a predetermined opening/closing angle (opening angle ?1) and then an unlock operation of the separation lock member is performed, a rotation support shaft can be separated from a support groove 23a, such that the main body cover can be separated from the fixing cover.

Abstract: A compression spring is retained in a spring retaining portion provided in a fixing cover. By a pressing portion formed in a main body cover, the compression spring can be pressed to generate a biasing force in an opening direction of the main body cover. The compression spring is retained in the spring retaining portion. Accordingly, the fixing cover and main body cover can be easily assembled.