公开(公告)号：US11454250B2

公开(公告)日：2022-09-27

申请号：US16883226

申请日：2020-05-26

Applicant: MAKITA CORPORATION

Inventor： Ko Fukunaga

IPC: F04D29/58 ,  A01G20/47 ,  B08B5/02 ,  F04D19/00 ,  F04D25/06 ,  H01M50/20

Abstract: A blower may include an air passage including an air intake hole and an air discharge hole; a fan disposed in the air passage and passing air from the air intake hole to the air discharge hole; a control unit; and a chamber that houses the control unit. The chamber may include a first communication hole communicating outside of the blower to the chamber, and a second communication hole communicating a part of the air passage disposed on an air intake hole side relative to the fan to the chamber. The chamber may include a cooling air passage which allows air having flowed in from the first communication hole to flow out from the second communication hole via the control unit. The first communication hole may be disposed on the air intake hole side relative to the fan with respect to a direction along a rotation axis of the fan.

公开(公告)号：US09661965B2

公开(公告)日：2017-05-30

申请号：US14523195

申请日：2014-10-24

Applicant: MAKITA CORPORATION

Inventor： Ko Fukunaga ,  Yoshinori Shibata ,  Takuro Konishi ,  Ryoichi Shimooka

IPC: A47L5/36 ,  A45F3/10 ,  A45F3/08

CPC classification number: A47L5/36 ,  A45F3/08 ,  A45F3/10

Abstract: A backpack work apparatus comprises a back carrier frame; a drive motor mounted on the back carrier frame; a work tool driven by the drive motor; a right and left shoulder straps; a chest strap linking the intermediate points of the right and left shoulder straps; and an emergency release buckle device provided at the point where the chest strap is coupled to the intermediate point of the left shoulder strap, which is divided by the buckle device into two parts, an upper strap and a lower strap. The buckle device normally buckles the chest strap, the upper strap and the lower strap, and is capable of releasing the lower strap and the chest strap from the upper strap via a one part motion in an emergency.

公开(公告)号：US09148997B2

公开(公告)日：2015-10-06

申请号：US13859911

申请日：2013-04-10

Applicant: MAKITA CORPORATION

Inventor： Ko Fukunaga ,  Masaki Sakuragi ,  Atsushi Yamamoto ,  Minoru Yamamoto

IPC: A01D34/90 ,  A01D34/412 ,  A01D34/416

CPC classification number: A01D34/905 ,  A01D34/412 ,  A01D34/4165 ,  F16C27/066 ,  F16C2310/00

Abstract: A work apparatus includes a drive motor, a tool head including a tool frame, a bearing, a tool shaft and a rotary tool, a frame tube with the proximal end connected to the drive motor and the distal end connected to the tool head, and a drive shaft rotatably inserted through the frame tube for transmitting the rotation of the drive motor to the rotary tool. The rotary tool is accommodated within the tool frame and is rotatable on the tool shaft, when driven by the drive shaft. The tool shaft is journaled by the bearing which is elastically supported by a flexible elastic member disposed coaxially around the bearing and interposed between the bearing and the connection of the tool frame or the frame tube. Undesirable vibrations caused by the rotation of the rotary tool will be effectively hindered from being transmitted to the frame tube.

Abstract translation: 工作装置包括驱动马达，包括工具框架的工具头，轴承，工具轴和旋转工具，具有连接到驱动马达的近端的框架管和连接到工具头的远端，以及 驱动轴可旋转地插入通过框架管，用于将驱动马达的旋转传递到旋转工具。 旋转工具容纳在工具框架内，并且当由驱动轴驱动时可旋转工具轴上。 工具轴由轴承支承，该轴承由同轴地布置在轴承周围的柔性弹性构件弹性地支撑，并且插入在轴承和工具框架或框架管的连接之间。 由旋转工具的旋转引起的不良振动将被有效地阻止传递到框架管。

公开(公告)号：US09179811B2

公开(公告)日：2015-11-10

申请号：US14504946

申请日：2014-10-02

Applicant: MAKITA CORPORATION

Inventor： Ko Fukunaga ,  Tomonobu Nashimoto ,  Yoshinori Shibata

IPC: A47L5/14 ,  A47L9/28 ,  A47L9/24 ,  E01H1/08 ,  H05F3/02

CPC classification number: A47L5/14 ,  A47L9/248 ,  A47L9/2889 ,  E01H1/08 ,  E01H1/0809 ,  H05F3/025

Abstract: A work apparatus is comprised of a blower unit including a drive motor, a volute casing, a fan rotatably supported within the volute casing and driven by the drive motor, and an airflow duct connected to the volute casing, thereby blowing out or sucking in air through the airflow duct; and of an airflow tube coupled to the airflow duct of the blower unit and having an open distal end for blowing out or sucking in air through the airflow tube. The airflow tube is provided with a grip handle adapted for being held and operated by the operator. Within the airflow tube is arranged an electrically conductive wire at least between the grip handle and the open distal end, beyond which is provided an electrically grounding wire connected to the electrically conductive wire and drooping therefrom to be touchable to earth.

Abstract translation: 工作装置包括鼓风机单元，该鼓风机单元包括驱动马达，蜗壳，可旋转地支撑在蜗壳内并被驱动马达驱动的风扇，以及连接到蜗壳的空气流通道，从而吹出或吸入空气 通过风管; 以及联接到鼓风机单元的气流通道的气流管，并且具有用于吹出或吸入空气的敞开的远端通过气流管。 气流管设置有适于由操作者保持和操作的把手。 在气流管内布置有至少在握柄和开口远端之间的导电线，超过此导电线设置有连接到导电线的电接地线并且从其下垂以可接地。