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    • 10. 发明授权
    • Lawn mower having improved deck height adjustment mechanism
    • 割草机具有改进的甲板高度调节机制
    • US5526633A
    • 1996-06-18
    • US289452
    • 1994-08-12
    • David S. StrongRichard P. RosaRonald A. JacksonStephen B. HunterBrian S. Burnett
    • David S. StrongRichard P. RosaRonald A. JacksonStephen B. HunterBrian S. Burnett
    • A01D34/74
    • A01D34/74A01D2101/00
    • A lawn mower having a deck height adjustment mechanism for simultaneously adjusting a height of a deck of a lawn mower at all four wheels of the lawn mower by the use of a single hand of the operator. The mechanism includes an index plate having a plurality of teeth thereon defining a plurality of deck height positions, and therefore a plurality of height positions of a cutting blade supported by the deck. The index plate is fixedly secured to an offset rear axle. An engaging plate having a pawl is coupled to an actuating member which is slidably, vertically moveable relative to the deck when the operator grips the actuating member and pulls upwardly away from the deck, while resting a palm of the same hand on a palm rest portion of the mechanism. A linkage member couples the index plate to a bracket of an offset front axle positioned at a front end of the deck. The operator adjusts the height of the deck relative to a ground surface by pulling upwardly with the fingers of one hand on the actuating member, while resting the palm of the same hand on the palm rest. This causes the engaging plate, and thus the pawl thereon, to be drawn out of engagement with the teeth of the index plate. The operator, while holding the actuating member engaged, may either pull upwardly with the same hand, thus raising the entire deck of the mower, or may urge the deck into a lower position. Movement of the index plate causes a simultaneous rotational movement of the offset front axle. Thus, all four corners of the deck are caused to be raised or lowered simultaneously as the operator either lifts or lowers the deck while engaging the actuation member.
    • 具有甲板高度调节机构的割草机,其通过使用操作者的单手同时调整割草机的所有四个轮子上的割草机的甲板的高度。 该机构包括其上具有多个齿的分度板,其中限定了多个甲板高度位置,并且因此具有由甲板支撑的切割刀片的多个高度位置。 分度板固定在一个偏移的后桥上。 具有棘爪的接合板联接到致动构件,当操作者握住致动构件并向上拉动远离甲板时,致动构件可相对于甲板可滑动地竖直移动,同时将同一只手的手掌搁在掌托部分 的机制。 联动构件将索引板连接到位于甲板前端的偏移前桥的支架。 操作者通过一只手的手指在致动构件上向上拉动同时将同一只手的手掌放在掌托上来调节甲板相对于地面的高度。 这导致接合板,并且因此其上的棘爪被拉出与指示板的齿接合。 操作者在保持致动构件接合的同时可以用相同的手向上拉,从而提升割草机的整个甲板,或者可以将甲板推入较低的位置。 索引板的移动导致偏移前轴的同时旋转运动。 因此,当操作者在接合致动构件时升高或降低甲板时,甲板的所有四个角都被同时升高或降低。