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    • 63. 发明授权
    • Drum type switch-over mechanism for a speed change device
    • 用于变速装置的鼓式切换机构
    • US4510820A
    • 1985-04-16
    • US481392
    • 1983-04-01
    • Masaharu Tsuboi
    • Masaharu Tsuboi
    • G05G9/06B62M25/06F16H61/26F16H63/00F16H63/14F16H63/16F16H63/18F16H63/32G05G1/14F16D41/16F16H1/28
    • F16H63/14B62M25/06F16H63/18Y10T74/1555Y10T74/19279Y10T74/20055
    • An improved drum type switch-over mechanism for a speed change device including a speed change pedal shaft and a speed change drum both of which are rotatably supported in axial alignment with one another on a transmission case and which are operatively connected to one another by way of an intermittent feed mechanism so as to allow the speed change drum to be rotated by a unit angle in a predetermined direction on every reciprocatable rotation of the pedal shaft by a predetermined angle. The improvement consists in that the pedal shaft is located in axial alignment with an input shaft of the intermittent feed mechanism, that a sun gear is formed on the input shaft while a plurality of planet gears are mounted on the pedal shaft for meshing engagement with the sun gear, and that a ring gear meshing with the planet gears is firmly fixed to the transmission case. This arrangement of the switch-over mechanism enables the pedal shaft, the input shaft and the speed change drum to be disposed within a limited space, realizing a very compact structure of the switch-over mechanism, a substantial reduction of its mounting space and smaller design dimensions of the speed change device.
    • 一种用于变速装置的改进的滚筒式切换机构,包括速度改变踏板轴和变速滚筒,它们都被可旋转地支撑在变速器壳体上彼此轴向对准并且彼此可操作地连接 间歇进给机构,以使得变速鼓在踏板轴的每一个可往复运动的旋转预定角度上以预定方向旋转单位角。 改进之处在于,踏板轴与间歇进给机构的输入轴轴向对准,在输入轴上形成太阳齿轮,而多个行星齿轮安装在踏板轴上,用于与 太阳齿轮,并且与行星齿轮啮合的齿圈牢固地固定到变速箱上。 切换机构的这种布置使得踏板轴,输入轴和变速鼓能够被布置在有限的空间内,实现了非常紧凑的切换机构的结构,其安装空间大大降低,并且更小 变速装置的设计尺寸。
    • 65. 发明授权
    • Transmission shift mechanism
    • 传动换档机构
    • US4028960A
    • 1977-06-14
    • US589479
    • 1975-06-23
    • Hans HauserRonald N. Jones
    • Hans HauserRonald N. Jones
    • F16H3/083F16H63/14G05G13/00B60K20/08
    • G05G13/00F16H3/083F16H63/14Y10T74/20085Y10T74/2063Y10T74/20636Y10T74/2133Y10T74/2136Y10T74/214
    • A transmission with multiple forward speeds and an improved shifting arrangement is provided. The transmission is particularly adapted for use on riding lawn mowers, garden tractors, and the like. The shift mechanism includes a pivotable shift lever which requires the operator to interrupt the motion of the lever when shifting from neutral to reverse and from neutral to successive forward speeds. This enables the operator to know by feel what gear the transmission is in. The transmission can also be quickly shifted from reverse to neutral or from any forward speed down to or toward neutral without interruption. The pivotable shift lever is located outside a cover of the transmission and is mechanically connected through the cover with an internal shift lever or arm which engages a pawl pivotally mounted on a carrier, with a stop member being engageable by the pawl to control the movement of the carrier, the pawl, and the levers. A shifter fork is located within the housing and projects through a slot in the housing, which slot is positioned transversely to the path of the carrier and in turn is engageable with a transverse slot in the carrier itself. The shifter fork moves a shift collar which is connected to two diametrically-opposed key carriers in two diametrically-opposed grooves in a shaft of the transmission. The carriers have individual keys for individual forward speed gears of the transmission. The ends of the carriers can engage an additional forward speed gear when moved to their extremities and the shift collar can engage a gear or sprocket for reverse when moved in the opposite direction along the shaft.
    • 提供了具有多个前进速度和改进的换档装置的变速器。 变速器特别适用于骑马割草机,园艺拖拉机等。 换档机构包括一个可枢转的变速杆,当变速从空转到反转,从中立到后续转速时,需要操作者中断杆的运动。 这使得操作者能够感觉到传动装置是什么齿轮。传动装置也可以快速地从反向切换到中立,或者从任何向前的速度向下或向着中性而不间断地移动。 可枢转变速杆位于变速器的盖的外侧,并且通过盖与机械连接,内部变速杆或臂与枢转地安装在托架上的棘爪接合,止动构件可由棘爪啮合以控制 托架,棘爪和杠杆。 换档叉位于壳体内并且突出穿过壳体中的狭槽,该槽横向于载体的路径定位,并且又可与载体本身中的横向槽接合。 换档叉移动一个换档轴环,该换档轴环连接到变速器的轴中的两个直径相对的槽中的两个径向相对的钥匙架。 载体具有用于变速器的各个前进档位的单独的键。 当移动到它们的末端时,载体的端部可以接合额外的前进档位,并且当沿轴线沿相反方向移动时,换档套环可接合齿轮或链轮以进行反向。