Walk-behind tiller with adjustable handle mechanism
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01B-033/02
B62K-021/16
출원번호
US-0986735
(2007-11-26)
등록번호
US-8839692
(2014-09-23)
우선권정보
JP-P2006-320526 (2006-11-28)
발명자
/ 주소
Yanai, Kiyomi
Habuka, Ai
Hamani, Misako
Ohba, Mai
출원인 / 주소
Honda Motor Co., Ltd.
대리인 / 주소
Carrier Blackman & Associates, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
9
초록
A work machine having a loop-shaped operating handle connected to an upper end part of a handle post. The operating handle pivots to positions in the longitudinal direction of the work machine across a longitudinal axis of the handle post as a baseline.
대표청구항▼
1. A tilling machine comprising: a tilling machine body;a motor operatively attached to the tilling machine body;a tiller wheel which is operatively attached to the tilling machine body and selectively rotatable by the motor, the tiller wheel having a plurality of tilling blades thereon;a handle pos
1. A tilling machine comprising: a tilling machine body;a motor operatively attached to the tilling machine body;a tiller wheel which is operatively attached to the tilling machine body and selectively rotatable by the motor, the tiller wheel having a plurality of tilling blades thereon;a handle post provided to a rear part of the tilling machine body and extending rearwardly upwardly in an inclined manner, the handle post comprising upper and lower post segments configured to be selectively slidable, relative to one another, in a longitudinal direction of the handle post to permit a height adjustment of the handle post, the upper post segment comprising a tubular left upper portion, a tubular right upper portion, and a support beam part integrally formed with and interconnecting the left and right upper portions;a slide switching device for switching between a released state in which the post segments are slidable in a longitudinal direction relative to each other, and a locked state in which the post segments are retained in a predetermined position, said slide switching device comprising: a handle bracket operatively attached to a portion of the handle post;at least one moving body operatively connected to the handle bracket which is selectively engageable with respective openings formed in the post segments to temporarily lock the position thereof in relation to one another; anda switch handle which is operatively connected to the at least one moving body, wherein the switch handle is selectively movable to temporarily disengage the at least one moving body from at least one of the post segments to permit slidable movement thereof;a substantially rectangular-loop-shaped operating handle connected to an upper end part of the handle post and having a support shaft part extending in a direction of width of the tilling machine body, a handle grip part, and right and left handle side parts interconnecting the support shaft part and the handle grip part, wherein the support shaft part extends substantially parallel to the support beam part of the upper handle post segment; anda pivot switching device operatively connecting the support beam part of the upper end part of the upper post segment and the support shaft part of the operating handle, and which is configured to enable selective movement of the operating handle between an operator side position and a position opposite from an operator, each of said positions providing an operable configuration of the tilling machine, said pivot switching device comprising: a pair of spaced apart handle support brackets attached to and extending upwardly from the support beam part of the handle post, each of the handle support brackets having a support hole formed therethrough and also having a housing concavity formed therein to receive the support shaft part of the operating handle therein;a pair of spaced apart guide brackets attached to the support shaft part of the operating handle, each of the guide brackets having an arcuate guide slot formed therein; anda support rod extending through the support holes of the handle support brackets and also extending through the arcuate guide slots of the guide brackets;wherein, depending on a tilling mode, the substantially rectangular-loop-shaped operating handle is adapted to pivot on the support shaft part in a front-and-rear direction of the tilling machine across a longitudinal axis of the handle post as a baseline, between the operator side position and the position opposite from the operator, andwherein the tilling machine is configured and arranged to support downward pressure of the operator leaning on the operating handle when the operating handle is in the position opposite from the operator, the handle grip part is disposed in a forward direction of the tilling machine and the handle side parts are sloped upwardly, whereby the tilling machine is adapted to move a lower portion of the tiller wheel downwardly into a substrate during rotary movement of said tiller wheel, in response to the operator applying downward pressure to the handle grip part of the operating handle. 2. The tilling machine of claim 1, wherein the post segments comprise at least one fixed tubular member and at least one adjustably movable tubular member which is slidably and telescopically movable relative to the fixed tubular member. 3. The tilling machine of claim 1, wherein the loop-shaped operating handle has in an inner peripheral wall comprising a central curved part provided at a widthwise center of the tilling machine body and protruding inwardly of adjacent parts of the loop. 4. The tilling machine of claim 1, wherein a travel clutch lever is pivotably provided to the operating handle, and the clutch lever includes a metal lever part that is pivotably provided to the operating handle, and a resin cover that covers the lever part. 5. The tilling machine of claim 1, wherein the pivot switching device includes a switch lever disposed near the operating handle and manually movable between a holding position in which the operating handle is maintained at a current position, and a pivot position in which the operating handle is movable between the operator side position and the position opposite from the operator. 6. The tilling machine of claim 1, wherein the guide brackets and the support rod cooperate to limit the pivoting movement of the operating handle so that when the operating handle is disposed at the position opposite from the operator, the operating handle, as seen in a side view thereof, defines a positive acute angle relative to a horizontal line intersecting the support shaft part of the operating handle. 7. The tilling machine of claim 1, wherein the operating handle has a greater lateral width than that of the handle post. 8. The tilling machine of claim 1, wherein the upper end part of the handle post is substantially U-shaped. 9. A tilling machine comprising: a tilling machine body;a motor operatively attached to the tilling machine body;a pair of drive wheels attached to the tilling machine body, the drive wheels being selectively rotatable by the motor;a tiller wheel which is operatively attached to the tilling machine body and selectively rotatable by the motor, the tiller wheel disposed in front of the drive wheels and having a plurality of tilling blades thereon;a handle post comprising a height-adjustment mechanism comprising at least one fixed tubular member and at least one slidably adjustable tubular member which is slidably and telescopically movable relative to the fixed tubular member, the handle post provided to a rear part of the tilling machine body and extending rearwardly upwardly in an inclined manner, the slidably adjustable tubular member of the handle post comprising a tubular left upper portion, a tubular right upper portion, and a support beam part integrally formed with and interconnecting the left and right upper portions;a substantially rectangular-loop-shaped operating handle connected to an upper end part of the handle post and having a support shaft part extending in a direction of width of the tilling machine body, a handle grip part, and right and left handle side parts interconnecting the support shaft part and the handle grip part, wherein the support shaft part extends substantially parallel to the support beam part of the handle post; anda pivot switching device operatively connecting the support beam of the upper end part of the handle post and the support shaft part of the operating handle, and which is configured to enable selective movement of the operating handle between an operator side position and a position opposite from an operator, each of said positions providing an operable configuration of the tilling machine;the pivot switching device comprising: a pair of spaced apart handle support brackets attached to and extending upwardly from the support beam part of the handle post, each of the handle support brackets having a support hole formed therethrough and also having a housing concavity formed therein to receive the support shaft part of the operating handle therein;a pair of spaced apart guide brackets attached to the support shaft part of the operating handle, each of the guide brackets having an arcuate guide slot formed therein; anda support rod extending through the support holes of the handle support brackets and also extending through the arcuate guide slots of the guide brackets;wherein the guide brackets and the support rod cooperate to define a stop member for limiting the pivoting movement of the operating handle so that when the operating handle is disposed at the position opposite from the operator, the operating handle, as seen in a side view thereof, defines a positive acute angle relative to a horizontal line intersecting the support shaft part of the operating handle;wherein the tilling machine is configured and arranged to support downward pressure of the operator leaning on the operating handle when the operating handle is in the position opposite from the operator, the handle grip part is disposed in a forward direction of the tilling machine and the handle side parts are sloped upwardly, whereby the tilling machine is adapted to move a lower portion of the tiller wheel downwardly into a substrate during rotary movement of said tiller wheel, in response to the operator applying downward pressure to the handle grip part of the operating handle. 10. The tilling machine of claim 9, wherein the handle post has a plurality of post segments separated in a longitudinal direction, and the post segments are configured so as to be slidable in a longitudinal direction. 11. The tilling machine of claim 9, wherein the loop-shaped operating handle has in an inner peripheral wall a central curved part provided at a widthwise center of the tilling machine body and protruding inwardly of the loop. 12. The tilling machine of claim 9, wherein a travel clutch lever is pivotably provided to the operating handle, and the clutch lever includes a metal lever part that is pivotably provided to the operating handle, and a resin cover that covers the lever part. 13. The tilling machine of claim 10, wherein the post segments include a slide switching device for switching between a state in which the post segments are slidable in a longitudinal direction, and a state in which the post segments are kept in a predetermined position. 14. The tilling machine of claim 13, wherein the slide switching device is disposed with an upper one of the post segments and includes a handle that is manipulated by the operator for switching between the slidable and kept states of the post segments. 15. The tilling machine of claim 9, wherein the pivot switching device includes a switch lever disposed near the operating handle and manually movable between a holding position in which the operating handle is maintained at a current position, and a pivot position in which the operating handle is movable between the operator side position and the position opposite from the operator.
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이 특허에 인용된 특허 (9)
Chen Shou-Mao (58 ; Ma Yuan West St. Taichung TWX), Adjustable handle assembly for push cart.
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