Makita Corporation

Fumitoshi Numata

Takumi Hayashi

Hirokazu Kimata

Akira Ojima

Naohiro Hayakawa

Junichi Nishikimi

Akira Tomonaga

Hideharu Muto

Tatsuya Kobayashi

Ryo Sunazuka

Xing Xu

Tatsuya Yoshizaki

Yasushi Ogura

Kanako Hirono

Kenichi Tabushi

Toru Itakura

Koichi Yakabe

Dan Shi

Akihiro Goto

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.

Blower

Heat generated during braking is reduced to prevent reduction in braking performance or the service life of the components. A grinder includes a housing, an operable member, a switch operable to be turned on or off in response to an operation on the operable member, a rotational shaft rotatable in response to an operation for turning on the switch, and a brake assembly that applies braking to the rotational shaft with the switch being in an off state and to release the braking applied to the rotational shaft in response to an operation for turning on the switch performed by the operable member. The brake assembly includes a brake member being circular and fixed to the rotational shaft, and multiple pressing members that press the brake member at multiple positions to apply a uniform force to the brake member from radially outward positions toward a center of the brake member.

Power tool

A power tool is configured such that at least one accessory is mountable in a detachable manner. The power tool includes at least one camera and a determining part. The at least one accessory may be an auxiliary handle and/or a cover, which at least partially covers a tool accessory mounted on the power tool in a detachable manner. The determining part is configured to perform image processing on image data output from the at least one camera and to determine whether the state of the at least one accessory is normal based on at least whether the at least one accessory is mounted on the power tool.

Power tool and power tool system

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.

A grinder includes a locking assembly to lock a spindle in a head housing and has outlets with a large opening area for high cooling efficiency. A grinder includes a main housing accommodating a motor and a fan, a spindle, a locking assembly that locks rotation of the spindle, and a head housing including a joint connected to a front of the main housing, and a compartment accommodating the spindle and the locking assembly. The compartment is laterally less wide than the joint. The locking assembly is located at a middle in a lateral direction of the head housing. The joint has, in a portion of a front surface of the joint, a first outlet at least on a right or a left of the compartment to discharge air for cooling the motor generated from rotation of the fan.

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.

Nozzle for blower

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.

Connecting structure between power tool and attachment

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.

Electric power tool

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.

A power tool includes an accessory and a reader. The accessory is configured to be attachable to and detachable from the power tool. The accessory includes a passive wireless tag. The reader includes at least one antenna and a reading part. The reading part is electrically connected to the at least one antenna. The reading part is configured to wirelessly communicate with the wireless tag via the at least one antenna and to read information stored in the wireless tag when the accessory is attached to the power tool.

An electric blower is configured to blow air. The blower includes a body configured such that a sprayer attachment is attachable thereto. The body is configured to be carried integrally with the sprayer attachment with the sprayer attachment attached to the body. The sprayer attachment includes a container, a nozzle and a liquid supply passage. The container is configured to store a liquid. The nozzle has a discharge opening. The liquid supply passage is connected to the container and the nozzle to lead the liquid.

Blower and sprayer attachment

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.

Growing community of inventors

Anjo, Japan

Fumitoshi Numata