Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

The Ohtsu Tire & Rubber Co., Ltd.

Kabushiki Kaisha F. C. C.

Hajime Yoshimura

Koji Kuriyagawa

Shota Tanabe

Nobuchika Katagiri

Yoshiyuki Matsuda

Norikazu Shimizu

Hiroshi Yamamoto

Hikaru Ikeda

Masahide Shinokawa

Satoshi Onodera

Nobuo Yamazaki

Makoto Uchimi

Ryota Hisada

Tomohiro Miyauchi

Kenta Kohigashi

Kouichi Uchibaba

Naoki Matsumoto

Tsuyoshi Yoshigasaki

Takahiro Yamamoto

Kenjiro Hiratsuna

Takuya Matsumoto

Atsushi Yamada

Tomoki Ito

Hideaki Kobayashi

Yasumi Fukuzumi

Masahiro Akiyama

Yasutomo Abe

Ryo Ogasawara

Toshiyuki Kitazawa

Hideaki Takada

Hiroshi Mizuguchi

Makoto Kataoka

Tomoaki Ishikawa

Yoshinori Masubuchi

Jun Fukano

Koji Kasai

Atsushi Moroi

Yoshio Ueno

Yuta Kimura

Naoyuki Miwa

Kenichi Sakai

Yoshitaka Ota

Shigeki Kawashima

Koichi Matsumoto

Yuji Matsuo

Norihiko Yokoyama

A work machine includes: a drive rotation speed detector configured to detect a signal indicating a rotation of a drive source; a work rotation speed detector configured to detect a signal indicating rotation of a work rotation shaft; and a control device configured to, on the basis of comparison between signals acquired from the drive rotation speed detector and the work rotation speed detector, stop the drive source in a case where there is a rotation speed difference between a driven shaft in a rotating state due to power transmission from the drive source and the work rotation shaft. The work rotation speed detector includes: a detection target member configured to rotate together with the work rotation shaft; and a sensor mounting member configured to hold a detection sensor configured to detect rotation of the detection target member.

Work machine

A lawn mower includes a cutter blade that cuts grass; a body portion including a housing containing the cutter blade, and a grass clippings discharge passage that discharge grass clippings cut by the cutter blade from the housing; a grass clippings container detachably attached to the body portion, and a slide device. The grass clippings discharge passage includes an upstream opening connected to the housing, and a downstream opening for ejecting grass clippings to outside of the body portion. The grass clippings container includes an opening opened toward the body portion and connected to the body portion, an end surface facing the opening, and a side surface extending from the opening to the end surface. The slide device adjusts a distance between the downstream opening of the grass clippings discharge passage and the end surface of the grass clipping container.

Lawn mower having improved discharge containment

A lawn mower includes a cutter blade that cuts grass, a body portion including a housing containing the cutter blade, and a grass clippings discharge passage that discharges grass clippings cut by the cutler blade from the housing, a grass clippings container that contain grass clippings, and an opening degree adjust valve. The grass clippings discharge passage includes an upstream opening connected to the housing, and a downstream opening for ejecting grass clippings to outside of the body portion. The opening degree adjust valve is provided at the downstream opening of the grass clippings discharge passage and adjusts an opening degree of the downstream opening.

Lawn mower having a reduced uneven distribution of discharged grass clippings

A lawn mower includes: a rotation shaft coupled to a power source and extending in an approximately vertical direction; a blade configured to rotate integrally with the rotation shaft; and a housing having a downward opening and accommodating the blade such that the blade is rotatable; and a maintenance tool provided on the housing, the maintenance tool being contactable with the blade from the above. A cutting portion of the blade is capable of moving between a maintenance position at which the cutting portion is contactable with the maintenance tool and an operating position at which the cutting portion mows a lawn.

Lawn mower having a maintenance tool for maintaining a cutting blade

A lawn mower includes a cutter blade having flaps and a flap drive mechanism. The flap drive mechanism includes a flap drive source and an intermediate power transmission unit. The intermediate power transmission unit is provided on a power transmission path between the flap drive source and the flaps and provided coaxially with a blade rotation axis. An output axis of a motor is provided coaxially with a blade rotation axis and the intermediate power transmission unit.

Lawnmower having a blade with adjustable flaps

A lawn mower includes: a work unit including a housing having a downward-facing opening end a cutter blade rotatably provided in the housing such that when rotated, the cutter blade cuts grass and generates a transport air flow flowing from the opening of the housing to inside; a grass clippings receptacle configured to receive mowed grass clippings; a grass clippings transport passage connecting an interior of the housing with the grass clippings receptacle; a shutter device including a shutter configured to open and close the grass clippings transport passage and an actuator configured to open/close-drive the shutter; a controller configured to control the shutter device; and a humidity sensor for detecting a humidity of an environment surrounding the lawn mower, wherein the controller is configured to open/close-control the shutter device based on the humidity.

Lawn mower with humidity controlled shutter device

Uneven distribution of grass clippings in a grass clippings receptacle of a lawn mower can be minimized. A lawn mower includes: a work unit including a housing having a downward-facing opening and a cutter blade rotatably provided in the housing such that the cutter blade cuts grass and generates a transport air flow flowing from the opening of the housing to inside; a grass clippings receptacle configured to receive mowed grass clippings; a grass clippings transport passage connecting an interior of the housing with the grass clippings receptacle; a shutter device including a shutter configured to open and close the grass clippings transport passage and an actuator configured to open/close-drive the shutter; a controller configured to control the shutter device; and a speed sensor for detecting a travel speed of the lawn mower, wherein the controller is configured to open/close-control the shutter device based on the travel speed.

Lawn mower with speed controlled shutter device

An oil pan includes a lubricant guide surface positioned above a lower end of an output gear located at the lowest position in a gear train. The lubricant guide surface is inclined so as to descend toward the output gear in an axial view of the output gear, and is inclined so as to descend from opposite ends to a central part in the axial direction of the output gear on the lubricant guide surface.

Transmission

In a transmission including: a transmission shaft driven by an electric motor; and a case that supports the electric motor and the transmission shaft, the transmission includes an adapter that is interposed between the case and the electric motor to which the electric motor is attached. The adapter is in contact with one end of the transmission shaft in an axial direction of the transmission shaft.

A cutter blade of a lawn mower includes a blade body and flaps. The blade body includes a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade. The flap pivotal axis is provided along a blade edge without intersecting with a blade rotational axis. A flap pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and in parallel to the pivotal axis, in a rotation direction of the cutter blade.

Lawn mower

A lawn mower contains: a work unit including a housing having a downward-facing opening and a cutter blade rotatably provided in the housing such that when rotated, the cutter blade cuts grass and generates a transport air flow flowing from the opening of the housing to inside; a grass clippings receptacle configured to receive grass clippings cut by the work unit; a grass clippings transport passage connecting an interior of the housing with the grass clippings receptacle; a shutter device including a shutter configured to selectively open and close the grass clippings transport passage and an actuator configured to drive the shutter; a controller configured to control the shutter device; and a pressure sensor provided in the grass clippings transport passage to detect a pressure in the grass clippings transport passage, wherein the controller is configured to control the shutter device in accordance with the pressure detected by the pressure sensor.

In a mower provided with a center pivot axle, a control unitcontrols a height adjusting mechanismfor a mowing unitso that a grass cutting height is increased from an initial level when an absolute value of a roll angle of the center pivot axle relative to a vehicle body has exceeded a first roll angle threshold value. A cutting bladeis stopped when the absolute value of the roll angle has exceeded a fourth roll angle threshold value which is greater than the first roll angle threshold value.

Mower provided with center pivot axle

Power equipment such as a riding moweris provided with a center pivot axlefor non-driven wheelsthereof and a rigid axlefor driven wheels. A control unitof the power equipment is configured to accelerate the left driven wheel when a right end up roll angle of the center pivot axle is detected by an axle sensor, and to accelerate the right driven wheel when a left end up roll angle of the center pivot axle is detected by the axle sensor when substantially no steering input of a steering deviceis detected by a steering sensorso that the power equipment may maintain a straight course.

Power equipment provided with center pivot axle

The power equipment such as a lawn mower () comprises an internal combustion engine () having a plurality of cylinders, an engine control unit () for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade () connected to the engine in a power transmitting relationship, a clutch () provided in a power transmission path between the engine and the work implement, and a central control unit () for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to operate the engine at a prescribed rotational speed with two or more of the cylinders kept activated when the clutch is engaged and the propelling device is propelling the power equipment forward, and to deactivate at least one of the cylinders when an opening of a throttle valve is below a first prescribed value for a prescribed time period.

Power equipment with cylinder deactivation engine

The lawn mower () comprises an internal combustion engine () having a plurality of cylinders, an engine control unit () for selectively deactivating at least one of the cylinders, a cutting blade () supported by a lawn mower main body via a cutter deck, and connected to the engine in a power transmitting relationship, a clutch () provided in a power transmission path between the engine and the cutting blade, a height adjustment mechanism () provided on the cutter deck for adjusting the height of the cutting blade, and a central control unit () for controlling an operation of the height adjusting mechanism, the clutch and the engine control unit. The central control unit is configured to cause the engine control unit to deactivate at least one of the cylinders when a prescribed operating condition is met, and to raise the cutting blade to a prescribed elevated height before deactivating the at least one of the cylinders.

Lawn mower powered by cylinder deactivation engine

Growing community of inventors

Wako, Japan

Hajime Yoshimura