Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Tetsuo Iida

Kenzo Shimada

Takao Kobayashi

Hiromitsu Sasaki

Shoji Hasei

Toshiaki Takizawa

Nobuyuki Hirose

Masanori Shin

Norikazu Shimizu

Joji Maeda

Tomoaki Ishikawa

Yusuke Ninomiya

Hiroshi Kobayashi

Yoshihisa Hirose

Tsutomu Inui

Shuhei Maruyama

Atsushi Abe

Shigekazu Sakata

Yuji Kishizawa

Kazuki Shimozono

Naoki Matsumoto

Yasunori Yamamoto

Yasutomo Abe

Shinichi Morohoshi

Shunsuke Kurioka

Mai Ohba

Yoshio Yoshihara

Ai Amano

Teisuke Tsukamoto

Shoichi Kato

Nobuyuki Habuka

Takao Kobyashi

Kenzou Shimada

Satoshi Odo

Makoto Tsuchida

A walk-behind lawn mower includes a cutter and a housing covering the cutter for allowing rotation of the cutter to cut grass. The housing includes a front wall portion covering a front part of the cutter and a portion other than the front wall portion. The front wall portion extends laterally of the housing. The front wall portion has a thickness more than twice a thickness of the portion other than the front wall portion. The front wall portion has a downwardly convex bottom surface, and serves as a handle for use in lifting up the lawn mower.

Walk-behind lawn mower

A walk-behind lawnmower is provided with a height-adjusting mechanism for adjusting the height of a housing above the ground. The walk-behind lawnmower further comprises an operating button for switching an adjustment operation of the height-adjusting mechanism from a restricted state to a permissive state; and a height-adjusting grip capable of being grasped by a hand so as to raise or lower the housing when the operating button is operated, and the adjustment operation of the height-adjusting mechanism is thereby permitted. The height-adjusting grip is provided to the housing in the vicinity of a left or right lateral part. The operating button is positioned in an area allowing operation by a finger of the hand grasping the height-adjusting grip.

Walk-behind lawnmower

A rotary lawnmower includes a shutter for switching a location to which grass cut by the blade is to be discharged, and a shutter operating mechanism for operating the shutter. The shutter operating mechanism has a first shaft, a second shaft, a first link arm, and a second link arm, a third link arm, and an operating lever. The first shaft is positioned on the housing. The first link arm is capable of swinging about the first shaft and has the operating lever. The second shaft is positioned adjacent to and parallel to the first shaft, is rotatably attached to the housing, and is linked to the shutter via the third link arm. The second link arm is attached to the second shaft in such a manner as to be restricted in relative rotation but capable of swinging about the second shaft, and is swing-driven by the first link arm.

Lawnmower

A walk-behind lawnmower having a height adjusting mechanism for adjusting the height of a housing above the ground. The height adjusting mechanism includes: a front wheel supporting member and a rear wheel supporting member that are attached to the housing so as to be capable of swinging up and down; a linking member for linking the front and rear wheel supporting members so as to be capable of concerted motion; and a locking mechanism for restricting and releasing displacement of the linking member in the forward-and-backward direction. The locking mechanism includes: a plurality of locking grooves arranged in a row from front to rear on the linking member; a locking pin capable of selectively interlocking with one of the locking grooves; a pin-guiding part for guiding the locking pin to be capable of entering into and retracting from one of the locking grooves; and an operating member for sliding and operating the locking pin.

Walk-behind lawnmower height adjusting mechanism

An exhaust circulation lawnmower is disclosed in which grass clippings are sent, along with carrier air, from a cutter housing to a grass bag; the grass clippings are held in the grass bag; and the carrier air is returned to the cutter housing as exhaust. A surface area Aof a grass clippings discharge opening and a surface area Aof a recirculation opening have a relationship of A&#x2266;{1/(1&#x2212;&#x3b2;N)}A, where Ais the surface area of the grass clippings discharge opening through which the grass clippings and carrier air are discharged from the cutter housing to the grass bag, Ais the surface area of the recirculation opening through which the carrier air is recirculated from the grass bag to the cutter housing, N is the number of bends having an angle of &#x3b1; degrees in the space between the grass clippings discharge opening and the recirculation opening, and &#x3b2; is a pressure loss coefficient for each of the bends.

Exhaust circulation lawnmower

In an electric working machine, a scroll portion is provided at one of left and right sides of a machine body, and a relay member functioning as a power switch in which a power on/off key is removably inserted is provided at the other side of the machine body. The relay member is provided between a motor-driving battery and a control section so that the battery and control section can be electrically connected with each other by insertion, in the relay member, of the power on/off key and disconnected from each other by removal, from the relay member, of the power on/off key.

Electric working machine

A lawn mower has a machine body, a grass bag detachably attached to the machine body for collecting therein grass clippings, a driving power source mounted on the machine body, a cutter blade driven by the driving power source for rotation to cut grass, and a cutter housing covering the cutter blade. The cutter blade has air lifting sections disposed at opposite end portions thereof for producing carrier air during rotation of the cutter blade. The cutter housing has a grass clipping delivery passage for directing grass clippings to the grass bag with the carrier air produced by the air lifting sections of the cutter blade, and an exhaust air return passage for returning only the carrier air, as exhaust air, from the grass bag to the cutter housing. The grass clipping delivery passage extends in a front-and-rear direction of the cutter housing. The exhaust air return passage is disposed adjacent to and extends substantially perpendicular to the grass clipping delivery passage. The exhaust air return passage has an exhaust air inlet disposed in a rear upper surface portion of the cutter housing and an exhaust air outlet facing a rear lower end of the cutter housing.

Lawn mower exhaust air return

A lawn mower comprises a power source for rotatably driving an output shaft, a housing having an interior space having a generally spiral-shaped portion, and a cutting blade disposed in the interior space of the housing and connected to the output shaft for rotation therewith to cut grass. The rotating cutting blade coacts with the spiral-shaped portion of the interior space to generate a swirling air flow that causes the cut grass to swirl within the interior space. A grass discharge passage communicates with the interior space of the housing and discharges therethrough grass cut by the cutting blade and swirling within the interior space of the housing. A pivotal shutter is pivoted about a generally vertical axis by manual operation of a control member to open and close the grass discharge passage. The pivotal shutter comprises a pivotal shaft and a unitary shutter member mounted on the pivotal shaft to undergo pivotal movement therewith for opening and closing the grass discharge passage.

Lawn mower

A lawn mower has a power source for rotationally driving an output shaft. A housing has an interior space having a generally spiral-shaped portion. A cutting blade is disposed in the interior space of the housing and is connected to the output shaft for rotation therewith to cut grass while the spiral-shaped portion of the interior space generates a swirling airflow allowing the cut grass to swirl within the interior space. An enclosure is connected to the housing and has a grass discharge passage having an inlet opening disposed in communication with the interior space of the housing for discharging grass cut by the cutting blade and swirling within the interior space of the housing. A guiding member is disposed in the interior space of the housing for gradually changing a direction of the swirling airflow and the swirling cut grass and for guiding the swirling airflow and the swirling cut grass toward the grass discharge passage of the enclosure.

Lawn mower guide and discharge

In an electric lawn mower, a rechargeable battery and an electric motor activatable by the battery are mounted in a machine body section, and a cutter blade is provided within a cutter housing and rotatable via the electric motor to cut grass. Cover member collectively covers the battery and electric motor. The cover member is shaped to progressively slant upward in a front-to-rear direction of the machine body section, and the cover member has an opening formed in its lower front end portion and an air vent formed in its rear end portion to thereby permit ventilation from the opening to the air vent such that the battery and electric motor can be cooled by air flows.

Electric lawn mower

A working machine has an operation switching lever mounted on a handle in the vicinity of a handle grip and is arranged to be manipulated by one of the hands of the operator to transmit or interrupt a driving force outputted from the drive source to the working tool. A drive switching lever is mounted on the handle and is arranged to be manipulated by one of the hands of the operator to operate a continuously variable transmission to switch driving wheels from a halt condition to a high-speed advancement condition. A disc is mounted on the handle for undergoing rotational movement relative to the drive switching lever. A control member positions the disc at a preselected angular position relative to the drive switching lever to regulate an amount of pivotal movement of the drive switching lever for adjusting a rotational speed of the driving wheels.

Walk-behind, self-propelled working machine

A walk behind working machine has a frame having a forward end portion and a rear end portion, a prime mover mounted on the frame, a pair of drive wheels mounted on the frame for undergoing rotation, and a power transmission mechanism for transmitting rotational power from the prime mover to the drive wheels. A running clutch is adapted to be placed in an engaged state in which rotational power is transmitted to the drive wheels and in a disengaged state in which rotational power is not transmitted to the drive wheels. A pair of operating handles extend from the rear end portion of the frame. A single grip/clutch lever serves as a grip handle for being gripped by an operator to maneuver the working machine and as a clutch lever manually operable to selectively place the running clutch in the engaged state and the disengaged state. The grip/clutch lever is pivotally mounted on distal end portions of the operating handles to undergo pivotal movement in forward and rearward directions of the frame between a rearward stop position having a first forward tilt and in which the running clutch is in the disengaged state and a forward operating position having a second forward position greater than the first forward position and in which the running clutch is in the engaged state.

Walk behind working machine

A lawn mower includes a grass discharge passage extending rearward from a housing A grass receptacle is removably mounted to the discharge passage via a receptacle mounted portion. A shutter is provided at a passage opening of the grass discharge passage facing the housing. The shutter is rotatably provided within the housing to adjust the degree of opening of the passage opening. The lawn mower is switched between a bagging mode, a mulching mode and an intermediate mode by the opening control with the shutter.

Lawn mower discharge shutter

A lawn mower includes a mower body and a grass bag provided at the rear of the mower body. The mower body has a cutter deck rotatably accommodating a cutter blade, a carrying passage for guiding grass clippings into the grass bag, and an air return passage for guiding only air from the grass bag into the cutter deck. Cutter deck-facing openings of the air return passage are opened in line with the rotating track of airlifts provided at the opposite ends of the cutter blade. A swirling airflow inside the cutter deck induced by the rotation of the cutter blade is in the same direction as that of air returned via the air return passage, resulting in a smooth airflow inside the cutter deck.

An electric lawn mower includes a cutter blade, an electric motor disposed above the cutter blade, and a battery unit for driving the electric motor. The battery unit is positioned above the electric motor to thereby achieve weight balance of the lawn mower. This arrangement allows air to flow smoothly between the electric motor and the battery unit.

Growing community of inventors

Wako, Japan

Tetsuo Iida