公开(公告)号：US4673055A

公开(公告)日：1987-06-16

申请号：US865113

申请日：1986-05-20

申请人： Kojiro Yamaoka ,  Hideaki Okada

发明人： Kojiro Yamaoka ,  Hideaki Okada

IPC分类号： B60K17/06 ,  F16H3/083 ,  F16H63/04 ,  F16H63/16 ,  F16H63/46 ,  B60R17/00

CPC分类号： B60W30/18 ,  B60W10/02 ,  B60W10/10 ,  F16H3/083 ,  F16H63/04 ,  F16H63/46 ,  F16H63/16 ,  Y10T74/1946

摘要： In a self-propelled working vehicle having a speed change mechanism wherein a plurality of change gears journaled on a shaft are coupled one at a time by key means disposed within and shiftable along the shaft, fluid-actuated clutch is provided for interrupting input of power to the speed change mechanism before shifting operations. For protecting gear-engaging clutch portion of the key means for damage, fluid pressure applied to the clutch from a disengaged condition thereof is increased gradually by a relief valve including a pressure-modulating control piston. For disengaging the clutch before shifting operations, an unloader valve is provided which is actuated by moving a speed change lever along a direction other than the key-shifting direction.Relief valve means also acting as an unloader valve for disengaging the clutch is disclosed. Differential-locking clutch is also disclosed which is operated by fluid for actuating the clutch in the transmission path.

摘要翻译： 在具有变速机构的自行车作业车辆中，其中轴上的多个变速齿轮通过设置在轴内并可沿轴移动的键装置一次一个地联接，提供流体致动离合器用于中断动力输入 到变速操作前的变速机构。 为了保护关键装置的齿轮啮合离合器部分的损坏，通过包括压力调节控制活塞的安全阀逐渐增加从其脱离状态向离合器施加的流体压力。 为了在换档操作之前使离合器分离，设置卸载阀，该卸载阀通过沿除了键移动方向以外的方向移动变速杆而致动。 公开了还用作用于脱离离合器的卸载阀的安全阀装置。 还公开了差速锁定离合器，其由用于致动传动路径中的离合器的流体操作。

公开(公告)号：US07921956B2

公开(公告)日：2011-04-12

申请号：US12429826

申请日：2009-04-24

申请人： Michio Tsukamoto ,  Hideaki Okada

发明人： Michio Tsukamoto ,  Hideaki Okada

IPC分类号： B60K17/356

CPC分类号： F16H61/4165 ,  A01D69/03 ,  B60K17/105 ,  B60K17/356 ,  B60Y2200/223 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/7058 ,  F15B2211/7121 ,  F16D31/02 ,  F16H39/14 ,  F16H61/444

摘要： A hydraulic driving vehicle comprises front and rear transaxles incorporating respective hydraulic motors, and a pump unit separated from the front and rear transaxles. The pump unit incorporates a hydraulic pump having a pump shaft. A hydraulic circuit is formed by piping between the pump unit and the front and rear transaxles so as to circulate hydraulic fluid between the hydraulic pump and the hydraulic motors. A reservoir tank of the hydraulic fluid is connected to the hydraulic circuit by piping. A first cooling fan blowing air away from the pump unit and a second cooling fan blowing air toward the pump unit are disposed oppositely to each other with respect to the pump unit and drivingly connected to the pump shaft. At least a pipe for the piping of the hydraulic circuit and the reservoir tank passes an area blown by each of the first and second cooling fans.

摘要翻译： 液压驾驶车辆包括并入相应的液压马达的前驱动桥和后驱动桥，以及与前驱动桥和后驱动桥分离的泵单元。 泵单元包括具有泵轴的液压泵。 液压回路由泵单元与前驱动桥和后驱动桥之间的管道形成，以便在液压泵和液压马达之间循环液压流体。 液压油箱的油箱通过管道连接到液压回路。 从泵单元吹出空气的第一冷却风扇和朝向泵单元吹送空气的第二冷却风扇相对于泵单元彼此相对设置并且驱动地连接到泵轴。 至少用于液压回路和贮存箱的管道的管道通过由第一和第二冷却风扇中的每一个吹送的区域。

公开(公告)号：US20070225100A1

公开(公告)日：2007-09-27

申请号：US11746746

申请日：2007-05-10

申请人： Hideaki Okada ,  Masaru Iida

发明人： Hideaki Okada ,  Masaru Iida

IPC分类号： F16H47/04

CPC分类号： F16H39/14

摘要： A hydrostatic transaxle apparatus, comprises: a housing filled therein with fluid so as to serve as a fluid sump; an axle disposed in the housing; a first hydraulic displacement unit disposed in the housing, the first hydraulic displacement unit having a rotary shaft serving as an input shaft; a second hydraulic displacement unit disposed in the housing, the second hydraulic displacement unit having a rotary shaft serving as an output shaft drivingly connected to the axle, wherein at least one of the first and second hydraulic displacement units includes a cylinder block fixed on the rotary shaft, the cylinder block and the rotary shaft having a coupling portion therebetween through which the cylinder block and the rotary shaft are coupled to each other, a plurality of axial pistons axially reciprocally fitted into the cylinder block in parallel to the rotary shaft, the plurality of pistons including at least two pistons disposed opposite to each other with respect to a center axis of the rotary shaft, and a swash plate abutting against heads of the plurality of the pistons, wherein each of the pistons has a center axis, and has a diameter that is substantially equal to a length of the center axis thereof, wherein the head of each of the pistons has a sectionally arcuate shape as a part of a circle having a center disposed in section has a semicircular head whose center of curvature is disposed within the center axis of the piston, and wherein a line connected between the centers of the circles of the at least two pistons is passed through the coupling portion; and a center section disposed in the housing, wherein the first and second hydraulic displacement units are mounted onto the center section so as to be fluidly connected to each other.

摘要翻译： 一种静液压驱动桥装置，包括：其中填充有用于作为流体槽的流体的壳体; 设置在所述壳体中的轴; 设置在所述壳体中的第一液压位移单元，所述第一液压位移单元具有用作输入轴的旋转轴; 第二液压位移单元设置在壳体中，第二液压位移单元具有用作驱动地连接到轴的输出轴的旋转轴，其中第一和第二液压位移单元中的至少一个包括固定在旋转体上的气缸体 所述气缸体和所述旋转轴之间具有联接部分，所述气缸体和所述旋转轴通过所述联接部分彼此联接;多个轴向活塞，其与所述旋转轴平行地轴向地往复地装配到所述气缸体中， 包括相对于所述旋转轴的中心轴线彼此相对设置的至少两个活塞的活塞以及与所述多个活塞的头部抵接的斜盘，其中每个所述活塞具有中心轴线，并且具有 直径基本上等于其中心轴线的长度，其中每个活塞的头部具有截面弧形的沙子 作为具有中心部分的圆的部分的pe具有半曲头，其曲率中心设置在活塞的中心轴线内，并且其中连接在至少两个活塞的圆的中心之间的线通过 通过联接部; 以及设置在壳体中的中心部分，其中第一和第二液压位移单元安装在中心部分上以便彼此流体连接。

公开(公告)号：US07191594B2

公开(公告)日：2007-03-20

申请号：US11283796

申请日：2005-11-22

申请人： Hideaki Okada

发明人： Hideaki Okada

IPC分类号： F16D31/02

CPC分类号： B60K17/105 ,  F16H39/14

摘要： A hydrostatic stepless transmission comprises a hydraulic pump and a hydraulic motor, at least one of the hydraulic pump and motor being variable in displacement; a closed circuit for fluidly connecting the hydraulic pump and motor to each other therethrough, the closed circuit including a pair of oil passages between the hydraulic pump and motor, one of the oil passages being hydraulically higher-pressured and the other being hydraulically depressed when the hydraulic pump delivers oil to the hydraulic motor; a speed change operation device for changing output rotational speed of the hydraulic motor; and a leak valve connected to the speed change operation device. The leak valve is connected to the closed circuit so that, when the speed change operation device is suddenly operated, the leak valve allows oil to leak from the higher-pressured oil passage to an area hydraulically pressured lower than the higher-pressured oil passage, such as the depressed oil passage in the closed circuit or an oil sump out of the closed circuit, and then stops leaking oil when operation of the speed change operation device is stopped.

摘要翻译： 液压无级变速器包括液压泵和液压马达，所述液压泵和马达中的至少一个位移可变; 用于将液压泵和电动机彼此流体连接的闭合回路，闭合回路包括在液压泵和电动机之间的一对油通道，其中一个油通道在液压压力较高的压力下，另一个在液压泵 液压泵向油压马达输送油; 用于改变液压马达的输出转速的变速操作装置; 以及与变速操作装置连接的泄漏阀。 泄漏阀与闭路连接，使变速操作装置突然动作时，泄漏阀使油从高压油路泄漏到低于高压油路的液压加压区域， 例如闭路回路中的凹陷油路或闭合回路中的油底壳，然后停止变速操作装置的运转时停止漏油。

公开(公告)号：US20060189433A1

公开(公告)日：2006-08-24

申请号：US11407190

申请日：2006-04-20

申请人： Hideaki Okada

发明人： Hideaki Okada

IPC分类号： F16H48/06

CPC分类号： F16H48/285 ,  F16H48/29

摘要： A transaxle comprising a transmission, a pair of coaxial axles, a deceleration assembly for decreasing output rotational speed of the transmission, a differential assembly for transmitting power from the deceleration assembly to the pair of axles, and a common housing incorporating the transmission. The differential assembly includes a pair of gear train units disposed on the respective axles, and a bull gear for receiving output rotation of the deceleration assembly. Each of the gear train units includes a sun gear fixed on each of the axles, a holder relatively rotatably provided on each of the axles, and a planetary gear supported by the holder to mesh with the sun gear. The holders of the pair of gear train units are symmetrical with respect to a surface perpendicular to the pair of axles and joined to each other through the surface, and integrally fitted together in the bull common gear.

公开(公告)号：US06907729B1

公开(公告)日：2005-06-21

申请号：US10421907

申请日：2003-04-24

申请人： Hideaki Okada ,  Masaru Iida ,  Katsumoto Mizukawa

发明人： Hideaki Okada ,  Masaru Iida ,  Katsumoto Mizukawa

IPC分类号： B60K17/10 ,  F16H39/14 ,  F16D39/00

CPC分类号： B60K17/10 ,  F16H39/14

摘要： A hydrostatic transmission including a closed fluid circuit is contained together with a deceleration gear mechanism in a housing filled with fluid so as to serve as a fluid sump. The hydrostatic transmission includes a check valve assembly in connection with the closed fluid circuit. The check valve assembly includes a vertically movable valve member, a valve seat, and a draining operation member being movable perpendicularly to the movement of the valve member. The check valve assembly has three functions. A first function of the check valve assembly is to lower the valve member by the gravity and hydraulic pressure in the closed fluid circuit so as to fit the valve member on the valve seat, thereby sealing the closed fluid circuit. A second function of the check valve assembly is to raise the valve member apart from the valve seat because the hydraulic pressure in the closed fluid circuit becomes lower than pressure in the fluid sump, thereby supplying fluid from the fluid sump to the closed fluid circuit. A third function of the check valve assembly is to raise the valve member apart from the valve seat by movement of the draining operation member, thereby draining fluid from the closed fluid circuit to the fluid sump.

摘要翻译： 包括闭合流体回路的静液传动装置与减速齿轮机构一起容纳在充满流体的壳体中，以用作流体槽。 静液压传动装置包括与闭合流体回路连接的止回阀组件。 止回阀组件包括可垂直于阀构件的运动移动的可垂直移动的阀构件，阀座和排水操作构件。 止回阀组件有三个功能。 止回阀组件的第一功能是通过封闭流体回路中的重力和液压来降低阀构件，以便将阀构件安装在阀座上，从而密封封闭的流体回路。 止回阀组件的第二功能是将阀构件从阀座离开，因为封闭流体回路中的液压压力低于流体槽中的压力，从而将液体从流体池提供给闭合流体回路。 止回阀组件的第三功能是通过排水操作构件的移动使阀构件与阀座分离，从而将流体从封闭的流体回路排出到流体池。

公开(公告)号：US06233929B1

公开(公告)日：2001-05-22

申请号：US09443735

申请日：1999-12-01

申请人： Hideaki Okada ,  Norihiro Ishii

发明人： Hideaki Okada ,  Norihiro Ishii

IPC分类号： F16D3102

CPC分类号： F16H57/0412 ,  F16H39/14 ,  F16H57/027 ,  F16H57/0415 ,  F16H57/0421

摘要： A hydrostatic transmission (HST) including a hydraulic pump is contained in a housing having upper and lower housings. An input shaft of the hydraulic pump projects outward from the upper housing. A cooling fan is provided on an upper end of the input shaft. A conduit is disposed within an area between the fan and the upper housing. The conduit extends between first and second couplings and is in communication with an oil sump formed in the housing. A pumping device, which rotates with the input shaft, is disposed within the second coupling for forcedly circulating oil between the conduit and the sump. Alternatively, a reservoir is disposed on an outer wall of the housing forming a second oil sump. A level of oil in the second oil sump is lower than a level of oil in the oil sump formed in the housing. The second oil sump communicates with the atmosphere whereas the oil sump formed in the housing is separated from the atmosphere. A siphon communicates both sumps with each other. The driving apparatus may incorporate either the conduit, the reservoir, or both the conduit and the reservoir.

摘要翻译： 包括液压泵的液压传动（HST）包含在具有上壳体和下壳体的壳体中。 液压泵的输入轴从上壳体向外突出。 在输入轴的上端设有冷却风扇。 导管设置在风扇和上壳体之间的区域内。 导管在第一和第二联接器之间延伸并且与形成在壳体中的油底壳连通。 与输入轴一起旋转的泵送装置设置在第二联接器内，用于在导管和贮槽之间强制循环油。 或者，储存器设置在壳体的外壁上，形成第二油底壳。 第二油底壳中的油位低于在壳体中形成的油底壳中的油位。 第二油底壳与大气连通，而形成在壳体中的油底壳与大气分离。 虹吸管将两个水槽彼此通信。 驱动装置可以包括导管，储存器或导管和储存器两者。

公开(公告)号：USRE36807E

公开(公告)日：2000-08-08

申请号：US829792

申请日：1997-04-30

申请人： Hideaki Okada

发明人： Hideaki Okada

IPC分类号： F16D31/02

摘要： In order that a hydraulic pump and a hydraulic motor of a hydrostatic transmission hitherto disposed to the exterior are attached to a hydrostatic transmission support member provided in a mission case, a charging pump hitherto attached to the hydraulic pump at the hydrostatic transmission is also attached to the hydrostatic transmission support member, and an oil filter hitherto attached to the outside of mission case is disposed therein, they are interposed between the lower surface of hydrostatic transmission support member and the charging pump. Furthermore, an outward takeout pump also is supported in the mission case.

摘要翻译： 为了将至今设置在外部的液压传动装置的液压泵和液压马达连接到设在任务箱中的静液传动支撑构件，迄今为止以静液压传动装置连接在液压泵上的充气泵也安装在 液体静力传递支撑构件和迄今附着到任务箱外部的滤油器设置在其中，它们介于静液压传动支撑构件的下表面和充气泵之间。 此外，任务情况下还支持外部取出泵。

公开(公告)号：US6007449A

公开(公告)日：1999-12-28

申请号：US65682

申请日：1998-04-24

申请人： Hideaki Okada ,  Hirohiko Kawada

发明人： Hideaki Okada ,  Hirohiko Kawada

IPC分类号： F16H48/08 ,  F16H48/24 ,  F16H48/30 ,  F16H48/06

CPC分类号： F16H48/30 ,  F16H48/08 ,  F16H48/24 ,  F16H2048/085 ,  F16H2048/305 ,  Y10T74/19005

摘要： A differential locking system of an axle driving apparatus wherein left and right axles are rotatably supported within a housing consisting of an upper half housing and a lower half housing. The inner ends of the axles are facing each other and are rotatably inserted within a differential input gear. An engaged plate member is disposed at the right of the differential input gear. Engaged recesses of the differential input gear and engaged recesses of the engaged plate member are connected with each other. A pair of differential pinions are pivoted within the differential input gear, perpendicular to the axles. Both sides of each differential pinion are engaged with differential side gears fixed around the right and left axles, respectively. Pin passing holes are bored in the right differential side gear. A thrust collar is disposed on the right axle outside of the right differential side gear. A shifter fixing the differential locking pins is axially slidably disposed around the thrust collar. The differential locking pins pass through the corresponding pin passing holes and can be inserted into and removed from engaged recesses of the differential input gear and the engaged plate member. A shift fork holds the shifter horizontally and rotatably engages at the upper end thereof with an upper half housing and at the lower end thereof with a lower half housing. A differential locking arm is attached to the bottom surface of the lower half housing so as to rotate the shift fork.

摘要翻译： 一种车轴驱动装置的差速锁定系统，其中左轴和右轴可旋转地支撑在由上半壳体和下半壳体组成的壳体内。 轴的内端面彼此相对并且可旋转地插入到差动输入齿轮内。 接合板构件设置在差动输入齿轮的右侧。 差动输入齿轮的接合凹槽和啮合板构件的啮合凹槽相互连接。 一对差动小齿轮在差速输入齿轮内枢转，垂直于轴。 每个差速器小齿轮的两侧分别与固定在左右轴上的差动侧齿轮啮合。 引脚通孔在右侧差速器齿轮中钻孔。 止推轴环设置在右侧差速器侧外侧的右轴上。 固定差动锁定销的换挡装置可轴向滑动地设置在推力轴环周围。 差速锁定销通过相应的销通孔，并且可以插入差速器输入齿轮和接合板构件的接合凹槽中并从其移除。 换档拨叉在水平方向上水平地可转动地与上半壳体接合，并在下端具有下半壳体。 差速锁定臂连接到下半壳体的底表面，以便使换档拨叉旋转。

公开(公告)号：US5752417A

公开(公告)日：1998-05-19

申请号：US775859

申请日：1997-01-02

申请人： Hideaki Okada ,  Shusuke Nemoto

发明人： Hideaki Okada ,  Shusuke Nemoto

IPC分类号： B60K17/10 ,  F16H57/02 ,  F16D33/00

CPC分类号： B60K17/105 ,  B60Y2200/221 ,  Y10T74/2186

摘要： An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.