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    • 1. 发明申请
    • Vehicle improved in steering
    • 车辆转向改善
    • US20050257983A1
    • 2005-11-24
    • US11189993
    • 2005-07-27
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith AndrewsToshiyuki HasegawaHiroaki Shimizu
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith AndrewsToshiyuki HasegawaHiroaki Shimizu
    • A01D69/03B60K17/00B60K17/10B62D11/00B62D11/04B62D11/18B62D11/24F16H39/14
    • A01D69/03B60K17/105B62D11/006B62D11/04B62D11/18B62D11/24F16H39/14
    • A vehicle is installed with an integral transaxle apparatus constructed so that a single housing contains left and right axles, a driving hydrostatic transmission (HST) having a variable displacement first hydraulic pump and a first hydraulic motor fluidly connected with each other, a steering HST having a variable displacement second hydraulic pump and a variable displacement second hydraulic motor fluidly connected with each other, and a differential unit differentially connecting the axles with each other so as to be driven regularly or reversely by the output of the driving HST and to differentially drive the axles while receiving the output of the steering HST, wherein the first hydraulic pump receives power of a prime mover and has a first movable swash plate, and the second hydraulic pump receives power of the prime mover independently of the first hydraulic pump and has a second movable swash plate. The vehicle is also provided with driving operating means for slanting operation of the first movable swash plate for switching the travelling direction between forward and backward and for changing the travelling speed, and steering operating means for slanting operation of the second movable swash plate so as to determine the leftward and rightward cornering angle. The second hydraulic motor has a third movable swash plate interlocking with the driving operating means so that the slanting direction of the third movable swash plate is changed oppositely with respect to its neutral position according to the travelling direction switching operation of the driving operating means, whereby the vehicle turns laterally in the same direction of leftward and rightward steering operation of the steering operating means whether the vehicle travels forward or backward.
    • 车辆安装有整体的驱动桥装置,其构造成使得单个壳体包含左轴和右轴,具有可变排量第一液压泵的驱动静液压变速器(HST)和彼此流体连接的第一液压马达,转向HST具有 相互流体连接的可变排量第二液压泵和可变排量第二液压马达,以及差动单元,其将轴彼此差分地连接,以便通过驱动HST的输出有规则地或相反地驱动,并差动驱动 同时接收转向HST的输出,其中第一液压泵接收原动机的动力并具有第一可动斜盘,并且第二液压泵独立于第一液压泵接收原动机的动力,并且具有第二 活动斜盘 车辆还设置有用于使第一可动斜盘倾斜操作的驱动操作装置,用于切换前后的行进方向和用于改变行驶速度;以及用于使第二可动斜盘的倾斜操作的转向操作装置,以便 确定左右拐角。 第二液压马达具有与驱动操作装置互锁的第三可动斜盘,使得根据驱动操作装置的行进方向切换操作,第三可动斜盘的倾斜方向相对于其中立位置相反地改变,由此 在车辆向前或向后行驶时,车辆在与转向操作装置的向左和向右转向操作相同的方向上横向转动。
    • 3. 发明授权
    • Vehicle improved in steering
    • 车辆转向改善
    • US06397966B1
    • 2002-06-04
    • US09489680
    • 2000-01-24
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith J. AndrewsToshiyuki HasegawaHiroaki Shimizu
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith J. AndrewsToshiyuki HasegawaHiroaki Shimizu
    • B62D1100
    • A01D69/03B60K17/105B62D11/006B62D11/04B62D11/18B62D11/24F16H39/14
    • A vehicle is installed with an integral transaxle apparatus constructed so that a single housing contains left and right axles, a driving hydrostatic transmission (HST) having a variable displacement first hydraulic pump and a first hydraulic motor fluidly connected with each other, a steering HST having a variable displacement second hydraulic pump and a variable displacement second hydraulic motor fluidly connected with each other, and a differential unit differentially connecting the axles with each other so as to be driven regularly or reversely by the output of the driving HST and to differentially drive the axles while receiving the output of the steering HST, wherein the first hydraulic pump receives power of a prime mover and has a first movable swash plate, and the second hydraulic pump receives power of the prime mover independently of the first hydraulic pump and has a second movable swash plate. The vehicle is also provided with driving operating means for slanting operation of the first movable swash plate for switching the travelling direction between forward and backward and for changing the travelling speed, and steering operating means for slanting operation of the second movable swash plate so as to determine the leftward and rightward cornering angle. The second hydraulic motor has a third movable swash plate interlocking with the driving operating means so that the slanting direction of the third movable swash plate is changed oppositely with respect to its neutral position according to the travelling direction switching operation of the driving operating means, whereby the vehicle turns laterally in the same direction of leftward and rightward steering operation of the steering operating means whether the vehicle travels forward or backward.
    • 车辆安装有整体的驱动桥装置,其构造成使得单个壳体包含左轴和右轴,具有可变排量第一液压泵的驱动静液压变速器(HST)和彼此流体连接的第一液压马达,转向HST具有 相互流体连接的可变排量第二液压泵和可变排量第二液压马达,以及差动单元,其将轴彼此差分地连接,以便通过驱动HST的输出有规则地或相反地驱动,并差动驱动 同时接收转向HST的输出,其中第一液压泵接收原动机的动力并具有第一可动斜盘,并且第二液压泵独立于第一液压泵接收原动机的动力,并且具有第二 活动斜盘 车辆还设置有用于使第一可动斜盘倾斜操作的驱动操作装置,用于切换前后的行进方向和用于改变行驶速度;以及用于使第二可动斜盘的倾斜操作的转向操作装置,以便 确定左右拐角。 第二液压马达具有与驱动操作装置互锁的第三可动斜盘,使得根据驱动操作装置的行进方向切换操作,第三可动斜盘的倾斜方向相对于其中立位置相反地改变,由此 在车辆向前或向后行驶时,车辆在与转向操作装置的向左和向右转向操作相同的方向上横向转动。
    • 5. 发明授权
    • Integral hydrostatic transaxle apparatus for driving and steering
    • 用于驾驶和转向的积分静液力驱动桥装置
    • US06312354B1
    • 2001-11-06
    • US09489678
    • 2000-01-24
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith J. AndrewsToshiyuki HasegawaHiroaki Shimizu
    • Koji IrikuraNorihiro IshiiRyota OhashiKenichi TakadaHirohiko KawadaRobert AbendKeith J. AndrewsToshiyuki HasegawaHiroaki Shimizu
    • B62D1106
    • B62D11/18
    • A transaxle apparatus is constructed so that left and right axles, two hydrostatic transmissions (HSTs), one for driving a vehicle and the other for steering it, and a differential unit for differentially connecting said axles with each other are together contained in a housing. The driving HST is disposed so that its hydraulic pump and motor are aligned along either a left or right side of the housing. The steering HST is disposed so that its hydraulic pump and motor are aligned along either a front or rear side of the housing. The differential unit is laterally opposite to the driving HST. Either the left or right axle crosses the driving HST between its hydraulic pump and motor. The two HSTs are provided with one or two flat center sections disposed in the housing. The cylinder blocks of the hydraulic pumps and motors of the two HSTs are mounted on either a top or bottom surface of the center section or sections. Power transmission mechanisms for transmitting output power from the hydraulic motors of the two HSTs into the differential unit are disposed on an opposite side of the center section(s) as the cylinder blocks. A charge pump may be attached onto the center section, and a conduit for sending fluid discharged from the charged pump into one or both HSTs may be partly extended outside the housing so as to be cooled by the atmosphere.
    • 传动桥装置被构造成使得左右轴,两个静液压变速器(HST),一个用于驱动车辆,另一个用于转向它,以及用于将所述轴彼此差分连接的差动单元一起被包含在壳体中。 驱动HST被布置成使得其液压泵和马达沿壳体的左侧或右侧对准。 转向HST被布置成使得其液压泵和马达沿壳体的前侧或后侧对准。 差速单元与驱动HST横向相对。 左或右轴与其液压泵和电机之间的驱动HST交叉。 两个HST设置有设置在壳体中的一个或两个平的中心部分。 两个HST的液压泵和马达的气缸体安装在中心部分的顶部或底部表面上。 用于将两个HST的液压马达的输出功率传递到差速单元的动力传递机构设置在与气缸体一致的中心部分的相对侧上。 电荷泵可以附接到中心部分,并且用于将从充电的泵排出的流体的一个或两个HST的导管部分地延伸到壳体外部,以便被大气冷却。
    • 7. 发明授权
    • Multi-axle vehicle with two hydrostatic transmissions for driving-steering
    • US06336513B1
    • 2002-01-08
    • US09372747
    • 1999-08-11
    • Toshiyuki HasegawaKoji IrikuraHiroaki Shimizu
    • Toshiyuki HasegawaKoji IrikuraHiroaki Shimizu
    • B62D600
    • B62D9/00B62D11/183B62D11/24
    • A running vehicle comprises a steering operation tool, a pair of running-driving axles, a pair of running wheels drivingly connected with the pair of running-driving axles, a first differential unit interposed between the pair of running-driving axles, a first hydrostatic transmission for transmitting a driving force to the first differential unit, a pair of steering output shafts, a second differential unit interposed between the pair of steering output shafts, a second hydrostatic transmission for transmitting a driving force to the second differential unit. The second hydrostatic transmission drivingly interlocks with the steering operation tool so that the output speed and direction of the second hydraulic transmission is changed by manipulation of the steering operation tool. A first drive train is interposed between one of the steering output shafts and one of the running-driving axles, and a second drive train is interposed between the other steering output shaft and the other running-driving axle for transmitting the rotating effort to the other running-driving axle in the opposite direction to the first drive train. To improve the running efficiency on a rough road or soft ground, a pair of running-driven axles are disposed either in front of or in rear of the pair of running-driving axles, another pair of running wheels are drivingly connected with the pair of running-driven axles, and each of a pair of power transmission mechanisms is interposed between one of the running-driving axles and one of the running-driven axles arranged on each side of the vehicle, so as to rotate the pair of running-driven axles in the same rotational direction of the running driving axles. Otherwise, to reduce the turning radius, a pair of first steerable running wheels steered by manipulation of the steering operation tool are drivingly connected with the pair of running-driving axles. A pair of second steerable running wheels steered by manipulation of the steering operation tool, or castor wheels are disposed either in front of or in rear of the pair of first steerable running wheels.
    • 8. 发明授权
    • Multi-wheel vehicle with transmission for driving-steering
    • 具有变速器的多轮车用于驾驶转向
    • US06554085B2
    • 2003-04-29
    • US09820673
    • 2001-03-30
    • Toshiyuki HasegawaKoji IrikuraHiroaki Shimizu
    • Toshiyuki HasegawaKoji IrikuraHiroaki Shimizu
    • B60K1730
    • B62D11/183B62D9/00B62D11/24
    • A multi-wheel vehicle provided with at least six running wheels, that is, a pair of first running wheels serving as driving wheels, a pair of second running wheels such as castors disposed before or behind said pair of first running wheels so as to be laterally turned in the traveling direction of said vehicle, and a pair of third running wheels disposed before or behind said first running wheels. The vehicle comprises a prime mover, a speed change operation device, a steering operation device, a transmission drivingly connected with said prime mover, and a pair of running-driving axles onto which said respective first running wheels are attached. The transmission applies composite force of first equal rotational forces in the same directions and second equal rotational forces in opposite directions onto said pair of first running wheels. The speed change operation device is manipulated so as to regulate the direction and magnitude of said first rotational forces. The steering operation device is manipulated so as to regulate the direction and magnitude of said second rotational forces.
    • 具有至少六个行进轮的多轮车,即作为驱动轮的一对第一行驶轮,设置在所述一对第一行驶车之前或之后的一对第二行驶轮,如脚轮,以便成为 在所述车辆的行进方向上横向转动,以及设置在所述第一行驶轮之前或之后的一对第三行驶轮。 车辆包括原动机,变速操作装置,转向操作装置,与所述原动机驱动连接的变速器,以及一对行走驱动轴,所述各个第一行驶车轮安装在该行走驱动轴上。 变速器将相同方向上的第一相等旋转力的复合力和相反方向上的第二等旋转力施加到所述一对第一行进轮上。 操纵变速操作装置以调节所述第一旋转力的方向和大小。 操纵转向操作装置以调节所述第二旋转力的方向和大小。
    • 10. 发明申请
    • Transmission for speed changing and steering of a vehicle
    • 车辆变速和转向传动
    • US20060196719A1
    • 2006-09-07
    • US11418068
    • 2006-05-05
    • Toshiyuki HasegawaTravis McCloudKeith AndrewsRobert Abend
    • Toshiyuki HasegawaTravis McCloudKeith AndrewsRobert Abend
    • B60K17/00
    • B60K17/105B60Y2200/223B62D11/006B62D11/18B62D11/183F16H47/04F16H2047/045
    • A transmission for speed changing and steering of a vehicle comprises a first HST and a first differential for speed changing and a second HST and a second differential for steering. The first HST is a combination of a hydraulic pump and motor. The pump is driven by an engine and the motor is drivingly changeable by operation of a speed change pedal. Output power from the motor is transmitted into a pair of first differential output shafts as axles through the first differential. The second HST is a combination of a hydraulic pump and motor. The second pump is driven by output power from the first HST and the second motor is drivingly changeable by operation of a steering wheel. A pair of second differential output shafts are rotated in opposite directions by output power of the motor, so that when turning, the first differential output shaft on the opposite side of the turning direction is accelerated.
    • 用于车辆的变速和转向的变速器包括第一HST和用于变速的第一差速器,以及用于转向的第二HST和第二差速器。 第一个HST是液压泵和电机的组合。 泵由发动机驱动,并且电动机通过变速踏板的操作而变化。 来自马达的输出功率通过第一差速器传递到作为轴的一对第一差动输出轴。 第二台HST是液压泵和电机的组合。 第二泵由来自第一HST的输出功率驱动,并且第二电动机可通过方向盘的操作而变化。 一对第二差速器输出轴通过马达的输出功率在相反方向旋转,从而当转动时,加速了与转动方向相反一侧的第一差动输出轴。