Makita Corporation

Shinsuke Naka

Ryoji Zama

Kento Nakamura

Yoshinori Shibata

Tomonobu Nashimoto

Electric backpack blower body

A blower may include an inlet, an outlet, an airflow pipe disposed between the inlet and the outlet, a fan disposed in the airflow pipe, an electric motor disposed in the airflow pipe and configured to drive the fan, a motor housing that is disposed in the airflow pipe and houses the electric motor, and a control unit configured to control the electric motor. The control unit includes a control board configured to control the electric motor and a casing that houses the control board. The airflow pipe may include an exposure hole connecting inside of the airflow pipe to outside of the airflow pipe such that the inside and the outside are in communication in a radial direction. The casing may be attached to the airflow pipe such that at least part of the casing covers an entirety of the exposure hole from outside in the radial direction.

Blower

A blower reduces debris blown toward an operator when air is jetted from a distal end of a blower pipe. A blower includes a blower body and a blower pipe. The blower body includes an impeller drivable to rotate by a prime mover, and a casing accommodating the impeller. The casing includes an air inlet and an air outlet. The blower pipe includes a basal end coupled to the air outlet, a distal end from which air ejected through the air outlet is jetted, and a peripheral wall having one or more openings.

A blower may include a plurality of batteries; a centrifugal fan configured to change a flow direction of air from a first direction extending along the rotation axis to a radially outward direction of the rotation axis; a volute casing including a discharge port and configured to guide the air from the centrifugal fan along a circumferential direction of the rotation axis to the discharge port; and a main grip disposed radially outward of the rotation axis and outside of the volute casing and configured to be gripped by an operator. A central axis of the main grip may extend along a reference plane perpendicular to the rotation axis. A distance from the reference plane to a center of gravity of the blower may be less than or equal to 1.5 times a width of the main grip.

Air blower

A blower may include a motor; a centrifugal fan configured to rotate with rotation of the motor; a casing configured to guide air from a suction port to a discharge port; a trigger configured to be pressed; and a control board configured to control rotation of the motor. The control board may include a normal mode and a low speed mode. In the normal mode, the control board may be configured to adjust a rotation speed of the motor in accordance with a degree by which the trigger is pressed. In the low speed mode, the control board may be configured to adjust the rotation speed of the motor to a target rotation speed, wherein the target rotation speed is lower than a maximum rotation speed of the motor that is achieved when the degree by which the trigger is pressed is a maximum degree in the normal mode.

A nozzle pipe is to be coupled to a distal open end of an air blow-off tube of a blower apparatus for regulating the profile of an airflow blown out from the blow-off tube. The nozzle pipe comprises an outer tubular member and an inner tubular member coaxially disposed within the outer tubular member. The inner tubular member has a circumferential wall formed with apertures allowing air passage therethrough. The outer tubular member and the inner tubular member provides a first space therebetween to form a first air passage, while the inner tubular member provides a second space therein to form a second air passage. A plurality of rectifier fins are disposed inward from the outer tubular member, standing radially and extending longitudinally, and spaced apart circumferentially from each other. The fins extend inclined at an angle with reference to the longitudinal central axis of the tubular members.

Growing community of inventors

Anjo, Japan

Shinsuke Naka