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公开(公告)号：US09004882B2
公开(公告)日：2015-04-14
申请号：US13441037
申请日：2012-04-06
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
CPC分类号： F04C2/3442 , F04C14/223 , F04C14/226 , F04C14/24 , F04C2270/58 , F04C2270/80
摘要： A variable displacement pump includes: a first urging member arranged to urge the cam ring in a direction to increase the eccentric amount; a second urging member arranged to urge the cam ring in a direction to decrease the eccentric amount; a control hydraulic chamber arranged to receive a discharge pressure, and thereby to move the cam ring against the urging force of the first urging member; and a hydraulic pressure introduction section configured to introduce the discharge pressure to the control hydraulic chamber when the discharge pressure becomes greater than a predetermined pressure which is in a range where the cam ring is movable against a resultant force of the urging forces of the first and second urging members, and where the cam ring is not movable only against the urging force of the first urging member.
摘要翻译： 可变排量泵包括：第一推动构件，其布置成沿着增大偏心量的方向推动凸轮环; 第二推动构件，其布置成沿着减小偏心量的方向推动所述凸轮环; 控制液压室，布置成接收排出压力，从而抵抗第一推动构件的推动力移动凸轮环; 以及液压引入部，其构成为，当所述排出压力变得大于所述凸轮环能够相对于所述第一和第二作用力的合力而移动的范围内的预定压力时，将排出压力引入所述控制液压室， 第二推动构件，并且其中凸轮环不能仅抵抗第一推动构件的推动力移动。
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公开(公告)号：US20110123379A1
公开(公告)日：2011-05-26
申请号：US12947084
申请日：2010-11-16
申请人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
发明人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
IPC分类号： F01C20/18
CPC分类号： F04C2/3442 , F04C14/226 , F04C15/0049 , F04C2270/12 , F04C2270/14
摘要： A variable displacement pump includes a pump structural member configured to change volumes of a plurality of working chambers by rotation of a rotor, so as to introduce oil through an inlet port into the working chambers and to discharge the oil through a discharge port, and further configured to oscillate a cam ring by a discharge pressure introduced into a control oil chamber. A first coil spring is provided to force the cam ring in a direction for increasing of a rate of change of the working-chamber volume. A second coil spring is provided to force the cam ring in a direction for decreasing of the rate of change of the working-chamber volume. The first and second coil springs are laid out on both sides of an arm portion of the cam ring in a manner so as to be opposed to each other.
摘要翻译： 可变排量泵包括泵结构构件，其构造成通过转子的旋转来改变多个工作室的体积，以便通过入口将油引入到工作室中并且通过排出口排出油，并且进一步 构造成通过引入到控制油室中的排出压力来摆动凸轮环。 设置第一螺旋弹簧以迫使凸轮环沿着增加工作室容积的变化率的方向。 提供第二螺旋弹簧以迫使凸轮环沿着减小工作室容积的变化率的方向。 第一和第二螺旋弹簧以彼此相对的方式布置在凸轮环的臂部的两侧。
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公开(公告)号：US20090291000A1
公开(公告)日：2009-11-26
申请号：US12469318
申请日：2009-05-20
申请人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
发明人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
CPC分类号： F04C2/3564 , F04C2/3442 , F04C14/226
摘要： In a variable displacement vane pump employing a cam ring, a pump rotor, and a plurality of vanes, each slidably fitted into the rotor, a biasing member is provided to force the cam ring in a direction that a geometric center of an inner peripheral surface of the cam ring and a rotation center of the rotor are spaced apart from each other. A force, by which the cam ring can be oscillated against the biasing member in accordance with a buildup of a pressure in a pump discharge portion, acts on the inner peripheral surface of the cam ring.
摘要翻译： 在采用凸轮环的可变排量叶片泵，泵转子和多个叶片，每个叶片可滑动地装配到转子中，设置有偏压构件以迫使凸轮环沿着内周表面的几何中心 并且转子的旋转中心彼此间隔开。 根据泵排出部分中的压力的积聚，凸轮环能够抵靠偏置构件摆动的力作用在凸轮环的内周面上。
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公开(公告)号：US20130164163A1
公开(公告)日：2013-06-27
申请号：US13615709
申请日：2012-09-14
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
IPC分类号： F04C2/00
CPC分类号： F04C2/344 , F04C2/348 , F04C14/226
摘要： A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
摘要翻译： 可变排量泵包括：第一控制油室，当排出压力被引入时，使凸轮环朝向抵抗偏置构件的偏压力的方向移动; 第二控制油室，当液压油被引入时，通过与偏置构件的偏置力协调来对凸轮环施加液压; 切换机构，其切换在压力低于排出压力的液压油从排出部引入到第二控制油室的一个状态和从第二控制油室排出液压油的状态; 并且在凸轮环的偏心度变得最小之前操作的控制机构，并且随着排出压力变大，排出第二控制油室内的更大量的液压油。
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公开(公告)号：US09109596B2
公开(公告)日：2015-08-18
申请号：US13615709
申请日：2012-09-14
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
CPC分类号： F04C2/344 , F04C2/348 , F04C14/226
摘要： A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
摘要翻译： 可变排量泵包括：第一控制油室，当排出压力被引入时，使凸轮环朝向抵抗偏置构件的偏压力的方向移动; 第二控制油室，当液压油被引入时，通过与偏置构件的偏置力协调来对凸轮环施加液压; 切换机构，其切换在压力低于排出压力的液压油从排出部引入到第二控制油室的一个状态和从第二控制油室排出液压油的状态; 并且在凸轮环的偏心度变得最小之前操作的控制机构，并且随着排出压力变大，排出第二控制油室内的更大量的液压油。
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公开(公告)号：US08613610B2
公开(公告)日：2013-12-24
申请号：US12947084
申请日：2010-11-16
申请人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
发明人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
CPC分类号： F04C2/3442 , F04C14/226 , F04C15/0049 , F04C2270/12 , F04C2270/14
摘要： A variable displacement pump includes a pump structural member configured to change volumes of a plurality of working chambers by rotation of a rotor, so as to introduce oil through an inlet port into the working chambers and to discharge the oil through a discharge port, and further configured to oscillate a cam ring by a discharge pressure introduced into a control oil chamber. A first coil spring is provided to force the cam ring in a direction for increasing of a rate of change of the working-chamber volume. A second coil spring is provided to force the cam ring in a direction for decreasing of the rate of change of the working-chamber volume. The first and second coil springs are laid out on both sides of an arm portion of the cam ring in a manner so as to be opposed to each other.
摘要翻译： 可变排量泵包括泵结构构件，其构造成通过转子旋转来改变多个工作室的体积，以便通过入口将油引入到工作室中并通过排出口排出油，并且进一步 构造成通过引入到控制油室中的排出压力来摆动凸轮环。 设置第一螺旋弹簧以迫使凸轮环沿着增加工作室容积的变化率的方向。 提供第二螺旋弹簧以迫使凸轮环沿着减小工作室容积的变化率的方向。 第一和第二螺旋弹簧以彼此相对的方式布置在凸轮环的臂部的两侧。
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公开(公告)号：US08142173B2
公开(公告)日：2012-03-27
申请号：US12469318
申请日：2009-05-20
申请人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
发明人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
CPC分类号： F04C2/3564 , F04C2/3442 , F04C14/226
摘要： In a variable displacement vane pump employing a cam ring, a pump rotor, and a plurality of vanes, each slidably fitted into the rotor, a biasing member is provided to force the cam ring in a direction that a geometric center of an inner peripheral surface of the cam ring and a rotation center of the rotor are spaced apart from each other. A force, by which the cam ring can be oscillated against the biasing member in accordance with a buildup of a pressure in a pump discharge portion, acts on the inner peripheral surface of the cam ring.
摘要翻译： 在采用凸轮环的可变排量叶片泵，泵转子和多个叶片，每个叶片可滑动地装配到转子中，设置有偏压构件以迫使凸轮环沿着内周表面的几何中心 并且转子的旋转中心彼此间隔开。 根据泵排出部分中的压力的积聚，凸轮环能够抵靠偏置构件摆动的力作用在凸轮环的内周面上。
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公开(公告)号：US08342815B2
公开(公告)日：2013-01-01
申请号：US12365661
申请日：2009-02-04
申请人： Yasushi Watanabe , Koji Saga
发明人： Yasushi Watanabe , Koji Saga
IPC分类号： F04B49/08
CPC分类号： F04C2/102 , F04C14/14 , F05C2201/021
摘要： Fluid inlet and outlet portions are provided for introducing and discharging a hydraulic fluid. The fluid outlet portion includes a plurality of outlet ports. A drive shaft is provided that rotates about its axis. A plurality of volume variable pump chambers are arranged about the drive shaft and rotated by the same. The pump chambers are arranged between the fluid inlet and outlet portions for compressing the hydraulic fluid from the fluid inlet portion before discharging the same from the fluid outlet portion. The pump chambers are exposed to the outlet ports separately one after another when the pump chambers are rotated by the drive shaft. A discharge rate varying mechanism is provided that varies a fluid discharge rate of each of the outlet ports by varying the amount of the fluid led to the outlet ports.
摘要翻译： 流体入口和出口部分用于引入和排出液压流体。 流体出口部分包括多个出口。 提供围绕其轴线旋转的驱动轴。 多个容积可变的泵室围绕驱动轴布置并由其旋转。 泵室布置在流体入口和出口部分之间，用于在从流体出口部分排放之前从流体入口部分压缩液压流体。 当泵室由驱动轴旋转时，泵室一个接一个地分开地暴露于出口端口。 提供一种排出速率变化机构，其通过改变引导到出口的流体的量来改变每个出口的流体排出速率。
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公开(公告)号：US20080308062A1
公开(公告)日：2008-12-18
申请号：US12136796
申请日：2008-06-11
申请人： Shoji MORITA , Yasushi Watanabe , Koji Saga
发明人： Shoji MORITA , Yasushi Watanabe , Koji Saga
IPC分类号： F01M1/02
CPC分类号： F04C14/226 , F04C2/102 , F04C2/3442
摘要： A variable displacement pump includes: a pump section arranged to be driven by an internal combustion engine, and to discharge a lubricant introduced from an induction portion to a plurality of hydraulic chambers, through a discharge portion, by volume variations of the hydraulic chambers; a variable mechanism arranged to move a movable member by using the discharge pressure of the lubricant, and to vary volumes of the hydraulic chambers which are opened to the discharge portion; and an urging section arranged to urge the movable member in a direction to increase quantities of the volume variations of the hydraulic chambers, the urging section having a spring constant which increases as a movement distance of the movable member in a direction to decrease the quantities of the volume variations of the hydraulic chambers increases.
摘要翻译： 可变排量泵包括：泵部分，其布置成由内燃机驱动，并且通过液压室的体积变化通过排出部分将从诱导部分引入的润滑剂排出到多个液压室; 可变机构，其被布置成通过使用润滑剂的排出压力移动可动构件，并且改变对排出部分敞开的液压室的容积; 以及推动部，其被设置成沿着增加液压室的体积变化量的方向推动可动件，所述推动部具有弹簧常数，该弹簧常数随着可移动部件在减小数量的方向的移动距离而增加 液压室的体积变化增大。
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公开(公告)号：US08186969B2
公开(公告)日：2012-05-29
申请号：US12136796
申请日：2008-06-11
申请人： Shoji Morita , Yasushi Watanabe , Koji Saga
发明人： Shoji Morita , Yasushi Watanabe , Koji Saga
IPC分类号： F04B49/00
CPC分类号： F04C14/226 , F04C2/102 , F04C2/3442
摘要： A variable displacement pump includes: a pump section arranged to be driven by an internal combustion engine, and to discharge a lubricant introduced from an induction portion to a plurality of hydraulic chambers, through a discharge portion, by volume variations of the hydraulic chambers; a variable mechanism arranged to move a movable member by using the discharge pressure of the lubricant, and to vary volumes of the hydraulic chambers which are opened to the discharge portion; and an urging section arranged to urge the movable member in a direction to increase quantities of the volume variations of the hydraulic chambers, the urging section having a spring constant which increases as a movement distance of the movable member in a direction to decrease the quantities of the volume variations of the hydraulic chambers increases.
摘要翻译： 可变排量泵包括：泵部分，其布置成由内燃机驱动，并且通过液压室的体积变化通过排出部分将从诱导部分引入的润滑剂排出到多个液压室; 可变机构，其被布置成通过使用润滑剂的排出压力移动可动构件，并且改变对排出部分敞开的液压室的容积; 以及推动部，其被设置成沿着增加液压室的体积变化量的方向推动可动件，所述推动部具有弹簧常数，该弹簧常数随着可移动部件在减小数量的方向的移动距离而增加 液压室的体积变化增大。
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