Makita Corporation

Junya Ishikawa

Akira Mizutani

Ken Goto

Takafumi Kotsuji

Ryosuke Otani

Hideharu Muto

Satoshi Ninagawa

Tomonori Kawase

Takahiro Kawakami

Akira Tomonaga

Shin Nakamura

Masatoshi Nakahama

Katsuhito Fujinami

Kenji Shibata

Yu Eto

Shunpei Yamaji

Ryo Imuta

Hiroki Kaneko

Kenichi Tabushi

Fumiyoshi Saito

Daiki Imaida

A power tool has highly airtight electrical connection between a controller and a switch to effectively prevent a short circuit. A grinder includes a housing, a motor accommodated in the housing, a controller accommodated in the housing and including a circuit board and a controller terminal located on a first facing surface and electrically connected to the circuit board, a switch accommodated in the housing and including a switch terminal located on a second facing surface facing the controller, being in direct contact with the controller terminal, and electrically connected to the controller terminal, and a seal located between the first facing surface and the second facing surface and sealing a periphery of the controller terminal and a periphery of the switch terminal with the controller terminal being in direct contact with the switch terminal. The first facing surface is a surface of the controller facing the switch.

Power tool

A tool includes a first accessory, a second accessory, a first attachment portion configured to allow the first accessory to be detachably attached thereto, a second attachment portion configured to allow the second accessory to be detachably attached thereto, a first intermediate member configured to be displaced from a first non-attachment position to a first attachment position by the attachment of the first accessory to the first attachment portion, a second intermediate member configured to be displaced from a second non-attachment position to a second attachment position by the attachment of the second accessory to the second attachment portion, and a single sensor configured to detect a specific state in which the first intermediate member is located at the first attachment position and the second intermediate member is located at the second attachment position.

Tool with single sensor to detect attachment of side grip and cover

The disclosure discloses an electric power tool. The electric power tool may include a motor, a power transmission mechanism connected to the motor, a housing that houses the motor and the power transmission mechanism, an end tool holder to which an end tool is configured to be attached and from which the end tool is configured to be detached, and connected to the power transmission mechanism, and a handle attached to the housing. The electric power tool may be configured to prohibit rotation of the motor when a user is not gripping the handle.

Electric power tool

An electric power tool disclosed herein may include a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism; a cover covering the tip tool holder partially; a first locking mechanism configured to switch between a first locking state and a first unlocked state; and a second locking mechanism configured to switch between a second locking state and a second unlocked state. In the electric power tool, the cover may become detachable from the housing when the user performs the second unlocking operation on the second locking mechanism and the first unlocking operation on the first locking mechanism.

A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.

Hand-held tool

A grinder includes a motor including an output shaft, a housing accommodating the motor, a switch, a brake member movable back and forth between a rear braking position and a front brake release position, a switch lever movable between an initial position and a depressed position, a sliding member slidable between a first position to move the brake member to the brake release position and a second position to move the brake member to the braking position to turn on the switch at the first position and turn off the switch at the second position, and a link member rotatable between a first rotational position to move the sliding member to the first position and a second rotational position to move the sliding member to the second position.

Grinder

A power tool includes a side handle that can be toollessly positioned and also attached to or detached from a tool body. The power tool includes a tool body having a side surface, a side handle on the side surface of the tool body, and an operable portion operable to attach or detach the side handle to or from the tool body and to position the side handle being attached to the tool body.

A grinder may include a motor; a spindle to which a grinding wheel is attached; bevel gears configured to transmit rotation of the motor to the spindle; a motor housing which houses the motor; a gear housing attached to a front side of the motor housing and housing the bevel gears; a spindle case attached to a lower side of the gear housing and rotatably supporting the spindle; a wheel cover attached to the spindle case and covering an outside of at least a part of the grinding wheel; and a stopper configured to prohibit removal of the wheel cover, wherein the stopper may be fastened together with the spindle case by a screw which fastens the spindle case to the gear housing.

In an angle electric power toolin which an output axis P intersects and is orthogonal to a motor axis J, a battery attachment portionis provided to the rear of a gripso as to extend in the rearward direction and a battery packis configured to be attached to an upper surface of said battery attachment portion. Because of this configuration, the battery packdoes not directly come into contact with a working surface W, thereby preventing flaws and scratches on the working surface W.

A grinder according to one aspect of the present disclosure includes a motor, a housing for housing the motor, a spindle protruding from the housing and configured to be driven to be rotated by the motor, a wheel cover configured to cover a part of a tip end tool attached to the spindle, a detector configured to detect the wheel cover, and a controller configured to stop or restrict the spindle being driven by the motor in response to non-detection of the wheel cover by the detector.

A grinder () includes a motor (), a housing (), a spindle (), a first cover (), and a second cover (). The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The first cover is provided in the circumferential direction of the spindle, is fixed to the housing, and at least partially covers a tool accessory (), which is mounted on the spindle, from above. The second cover is detachably mounted on the housing () independently of the first cover.

Grinder, cover and cover set

Electric polisher

A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.

Growing community of inventors

Anjo, Japan

Junya Ishikawa