公开(公告)号：US08388326B2

公开(公告)日：2013-03-05

申请号：US12882751

申请日：2010-09-15

申请人： Atsushi Sumimoto ,  Tomoo Harada

发明人： Atsushi Sumimoto ,  Tomoo Harada

IPC分类号： F04B19/00 ,  F04B53/10

CPC分类号： F04B1/0408 ,  B60T8/4031 ,  F04B53/14

摘要： A piston pump assembly includes a first pump having a first cylinder member inserted in a piston hole of a pump housing, and a first piston inserted in the first cylinder member, and a second pump having a second cylinder member inserted in the piston hole, and an annular second piston slidably fitted in an annular groove formed in the outer periphery of the first piston, and also axially slidably inserted in the second cylinder member. The first cylinder member axially presses the second cylinder member, thereby preventing the second cylinder member from being dropped out of the piston hole. The second cylinder member has an annular seal surface in contact with a shoulder surface formed on the inner periphery of the piston hole. Strain-absorbing protrusions are formed on the end of the second cylinder member in abutment with the first cylinder member. The protrusions are compressed when they are pressed by the first cylinder member.

摘要翻译： 活塞泵组件包括：第一泵，其具有插入在泵壳体的活塞孔中的第一气缸构件和插入在第一气缸构件中的第一活塞;以及第二泵，具有插入在活塞孔中的第二气缸构件，以及 环形的第二活塞可滑动地装配在形成在第一活塞的外周中的环形槽中，并且还可轴向滑动地插入第二气缸构件。 第一气缸构件轴向地按压第二气缸构件，从而防止第二气缸构件从活塞孔中脱出。 第二气缸构件具有与形成在活塞孔的内周上的台肩表面接触的环形密封表面。 应变吸收突起形成在第二圆柱体构件的与第一气缸构件相邻的端部上。 当它们被第一气缸构件按压时，突起被压缩。

公开(公告)号：US20110070112A1

公开(公告)日：2011-03-24

申请号：US12882751

申请日：2010-09-15

申请人： Atsushi Sumimoto ,  Tomoo Harada

发明人： Atsushi Sumimoto ,  Tomoo Harada

IPC分类号： F04B53/14

CPC分类号： F04B1/0408 ,  B60T8/4031 ,  F04B53/14

摘要： A piston pump assembly includes a first pump having a first cylinder member inserted in a piston hole of a pump housing, and a first piston inserted in the first cylinder member, and a second pump having a second cylinder member inserted in the piston hole, and an annular second piston slidably fitted in an annular groove formed in the outer periphery of the first piston, and also axially slidably inserted in the second cylinder member. The first cylinder member axially presses the second cylinder member, thereby preventing the second cylinder member from being dropped out of the piston hole. The second cylinder member has an annular seal surface in contact with a shoulder surface formed on the inner periphery of the piston hole. Strain-absorbing protrusions are formed on the end of the second cylinder member in abutment with the first cylinder member. The protrusions are compressed when they are pressed by the first cylinder member.

摘要翻译： 活塞泵组件包括：第一泵，其具有插入在泵壳体的活塞孔中的第一气缸构件和插入在第一气缸构件中的第一活塞;以及第二泵，具有插入在活塞孔中的第二气缸构件，以及 环形的第二活塞可滑动地装配在形成在第一活塞的外周中的环形槽中，并且还可轴向滑动地插入第二气缸构件。 第一气缸构件轴向地按压第二气缸构件，从而防止第二气缸构件从活塞孔中脱出。 第二气缸构件具有与形成在活塞孔的内周上的台肩表面接触的环形密封表面。 应变吸收突起形成在第二圆柱体构件的与第一气缸构件相邻的端部上。 当它们被第一气缸构件按压时，突起被压缩。

公开(公告)号：US06474752B2

公开(公告)日：2002-11-05

申请号：US09897024

申请日：2001-07-03

申请人： Tomoo Harada ,  Takahiro Yamaguchi ,  Toshiya Morikawa

发明人： Tomoo Harada ,  Takahiro Yamaguchi ,  Toshiya Morikawa

IPC分类号： B60T840

CPC分类号： B60T8/4275 ,  B60T8/4031 ,  B60T8/4872 ,  F04C2/102 ,  F04C15/0042 ,  F04C2230/231 ,  F04C2230/602

摘要： In a rotary pump, an outer rotor and an inner rotor are assembled in a casing such that, when a clearance between an inner teeth portion of the outer rotor and an outer teeth portion of the inner rotor is substantially nullified at a first closed gap portion having a maximum volume formed between the inner teeth portion and the outer teeth portion, a clearance between the outer rotor and the casing on a side of the first closed gap portion and a clearance between the outer rotor and the casing on a side of a second closed gap portion having a minimum volume, become substantially an equivalent interval. As a result, the outer rotor and the casing can be brought into contact with each other on the side of the second closed gap portion rather than the central axis of the inner rotor. Even in a high pressure discharge operation, the outer rotor is not locked by being squeezed between the inner rotor and the casing.

摘要翻译： 在旋转泵中，外转子和内转子组装在壳体中，使得当外转子的内齿部分与内转子的外齿部分之间的间隙在第一闭合间隙部分基本上无效时 具有形成在内齿部分和外齿部分之间的最大体积，在第一闭合间隙部分的一侧上的外转子和壳体之间的间隙以及外转子和壳体之间的间隙在第二闭合间隙部分 具有最小体积的闭合间隙部分变成基本上等效的间隔。 结果，外转子和壳体可以在第二闭合间隙部分的侧面而不是内转子的中心轴线彼此接触。 即使在高压放电操作中，外转子也不被内转子和壳体之间的挤压而锁定。

公开(公告)号：US06270169B1

公开(公告)日：2001-08-07

申请号：US09170052

申请日：1998-10-13

申请人： Tomoo Harada ,  Takahiro Yamaguchi ,  Toshiya Morikawa

发明人： Tomoo Harada ,  Takahiro Yamaguchi ,  Toshiya Morikawa

IPC分类号： B60T840

CPC分类号： B60T8/4275 ,  B60T8/4031 ,  B60T8/4872 ,  F04C2/102 ,  F04C15/0042 ,  F04C2230/231 ,  F04C2230/602

摘要： In a rotary pump, an outer rotor and an inner rotor are assembled in a casing such that, when a clearance between an inner teeth portion of the outer rotor and an outer teeth portion of the inner rotor is substantially nullified at a first closed gap portion having a maximum volume formed between the inner teeth portion and the outer teeth portion, a clearance between the outer rotor and the casing on a side of the first closed gap portion and a clearance between the outer rotor and the casing on a side of a second closed gap portion having a minimum volume, become substantially an equivalent interval. As a result, the outer rotor and the casing can be brought into contact with each other on the side of the second closed gap portion rather than the central axis of the inner rotor. Even in a high pressure discharge operation, the outer rotor is not locked by being squeezed between the inner rotor and the casing.

摘要翻译： 在旋转泵中，外转子和内转子组装在壳体中，使得当外转子的内齿部分与内转子的外齿部分之间的间隙在第一闭合间隙部分基本上无效时 具有形成在内齿部分和外齿部分之间的最大体积，在第一闭合间隙部分的一侧上的外转子和壳体之间的间隙以及外转子和壳体之间的间隙在第二闭合间隙部分 具有最小体积的闭合间隙部分变成基本上等效的间隔。 结果，外转子和壳体可以在第二闭合间隙部分的侧面而不是内转子的中心轴线彼此接触。 即使在高压放电操作中，外转子也不被内转子和壳体之间的挤压而锁定。

公开(公告)号：US5577896A

公开(公告)日：1996-11-26

申请号：US265110

申请日：1994-06-24

申请人： Tomoo Harada

发明人： Tomoo Harada

IPC分类号： B60T8/40 ,  F04B5/02 ,  F04B23/06 ,  F04B53/12 ,  F04B3/00

CPC分类号： F04B5/02 ,  B60T8/4031 ,  F04B23/06 ,  F04B53/122 ,  F04B53/126

摘要： An object of the present invention is to provide a pump which suppresses a decrease in the volumetric efficiency of the pump to a great extent even in case that the kinematic viscosity of a fluid is high with a compact structure of the pump itself. The present invention, a pump provided with a first pump mechanism and a second pump mechanism comprises a housing having therein a first pump chamber, a second pump chamber, an intake port communicated with the first pump chamber, and a discharge port communicated with the second pump chamber, first valve means which open the communicating passage when the second pump chamber is compressed and close the communicating passage when the second pump chamber is expanded, a piston which expands the second pump chamber when the first pump chamber is compressed, and compresses the second pump chamber when the first pump chamber is expanded in accordance with movement thereof, second valve means which open so as to permit fluid to flow into the first pump chamber when the first pump chamber is expanded and close so as to prevent fluid in the first pump chamber from flowing out of the first pump chamber when the first pump chamber is compressed, and third valve means which open so as to discharge pressurized fluid in the second pump chamber when the second pump chamber is compressed and close when the second pump chamber is expanded.

摘要翻译： 本发明的目的是提供一种即使在泵本身的紧凑结构的情况下流体的运动粘度高的情况下也能够大大地抑制泵的体积效率的泵。 本发明提供了一种具有第一泵机构和第二泵机构的泵，具有：壳体，其具有第一泵室，第二泵室，与第一泵室连通的进气口，以及与第二泵室连通的排出口 泵室，当所述第二泵室被压缩时，所述第二泵室被压缩并打开所述连通通道的第一阀装置，当所述第二泵室膨胀时闭合所述连通通道;在所述第一泵室被压缩时使所述第二泵室膨胀的活塞， 第二泵室，当第一泵室根据其运动而膨胀时，第二阀装置打开，以便当第一泵室膨胀和关闭时允许流体流入第一泵室，以防止第一泵室中的流体在第一泵室 当第一泵室被压缩时，泵室从第一泵室流出，以及打开以便排出的第三阀装置 当第二泵室被膨胀时第二泵室被压缩并关闭时，第二泵室中的加压流体。

公开(公告)号：US08746811B2

公开(公告)日：2014-06-10

申请号：US13532031

申请日：2012-06-25

申请人： Koichi Okamura ,  Chikage Nakamura ,  Tomoo Harada

发明人： Koichi Okamura ,  Chikage Nakamura ,  Tomoo Harada

IPC分类号： B60T8/36

CPC分类号： B60T8/368 ,  B60T13/146 ,  B60T13/686

摘要： A brake fluid pressure control device includes: a electromagnetic control valve; a electromagnetic booster valve; a electromagnetic decompression valve; a pump, which are incorporated in a single housing; and an electronic control unit, wherein, the pump draws up at least one of brake fluid, which is supplied from the main reservoir, and brake fluid, which is discharged from the wheel cylinder, and then the pump returns the drawn brake fluid to an area that extends from the electromagnetic control valve of a main flow path up to the electromagnetic booster valve; and a fluid reservoir, which communicates with both the decompression path and an intake port of the pump, and which is arranged inside the housing so that the brake fluid in the fluid reservoir flows toward the intake port of the pump by gravity.

摘要翻译： 一种制动液压控制装置，包括：电磁控制阀; 电磁增压阀; 电磁减压阀; 泵，其被并入单个壳体中; 以及电子控制单元，其中，泵吸入从主容器供给的制动流体和从轮缸排出的制动流体中的至少一个，然后泵将抽出的制动流体返回到 从主流路的电磁控制阀向电磁增压阀延伸的区域; 以及与减压路径和泵的进气口连通的流体储存器，并且布置在壳体内部，使得流体储存器中的制动流体通过重力流向泵的进气口。

公开(公告)号：US08491287B2

公开(公告)日：2013-07-23

申请号：US12706271

申请日：2010-02-16

申请人： Kazuyuki Murai ,  Tomoo Harada

发明人： Kazuyuki Murai ,  Tomoo Harada

IPC分类号： F04B53/12

CPC分类号： F04B53/162 ,  B60T8/4031 ,  F04B1/0408 ,  F04B1/0421 ,  F04B53/126

摘要： A piston pump includes a pump mechanism configured to compress fluid sucked from an inlet port by increasing or decreasing a volume of a pump chamber which faces a front end of a piston by reciprocating the piston housed in a housing, a feed mechanism including a feed ring mounted to an annular groove provided at an outer periphery of the piston and following a motion of the piston, a feed chamber formed between the feed ring and the housing, and a valve portion. The piston pump includes a pressure wall provided at the piston and configured to contact the feed ring to axially move the feed ring, and a restriction portion provided at the feed ring and configured to engage with an outer periphery of the piston at a position approximate to the pressure wall for restricting a radial displacement of the feed ring on the piston.

摘要翻译： 活塞泵包括泵机构，其构造成通过使容纳在壳体中的活塞往复运动来增加或减小面对活塞的前端的泵室的体积，从而压缩从入口吸入的流体;进给机构，包括进料环 安装到设置在活塞的外周边并沿着活塞的运动的环形槽，形成在进料环和壳体之间的进料室和阀部分。 活塞泵包括设置在活塞处并被构造成接触进给环以轴向移动进料环的压力壁，以及限定部分，设置在进料环处并构造成在活塞的外周接近于 用于限制进给环在活塞上的径向位移的压力壁。

公开(公告)号：US08043072B2

公开(公告)日：2011-10-25

申请号：US11653391

申请日：2007-01-16

申请人： Junichi Maeda ,  Tomoo Harada

发明人： Junichi Maeda ,  Tomoo Harada

IPC分类号： F04B23/00 ,  F04B53/20

CPC分类号： F04B53/20 ,  B60T8/4031 ,  F04B1/0421 ,  F04B1/0452 ,  F04B53/10

摘要： A filter to be mounted in a valve seat member for filtering liquid is proposed which can be manufactured without a drawing step, thereby improving productivity and cost performance of a piston pump in which such a filter is mounted. The filter is a flat metal plate including a main body formed with a plurality of filter holes in a central portion thereof, and a plurality of projections integrally and radially outwardly extending from a perimeter of the main body so as to be circumferentially spaced apart from each other. The filter is pushed into a filter mounting hole formed in a valve seat member of a discharge valve in a piston pump with the projections bent toward the opening of the filter mounting hole while being pressed against the inner surface of the filter mounting hole under an elastic restoring force and fixed to the valve seat member.

摘要翻译： 提出安装在用于过滤液体的阀座构件中的过滤器，其可以在没有拉伸步骤的情况下制造，从而提高安装这种过滤器的活塞泵的生产率和成本性能。 该过滤器是一个平板金属板，它包括一个在其中心部分形成有多个过滤孔的主体，以及从主体的周边整体地和径向向外延伸的多个突起， 其他。 过滤器被推入形成在活塞泵的排出阀的阀座构件中的过滤器安装孔，其中突起朝向过滤器安装孔的开口弯曲，同时在弹性件的下方按压过滤器安装孔的内表面 恢复力并固定到阀座构件。

公开(公告)号：US20100052417A1

公开(公告)日：2010-03-04

申请号：US12546346

申请日：2009-08-24

申请人： Koji Aoba ,  Kazuma Shigeta ,  Tomoo Harada

发明人： Koji Aoba ,  Kazuma Shigeta ,  Tomoo Harada

IPC分类号： B60T8/48

CPC分类号： B60T8/4872 ,  B60T8/368 ,  Y10S303/11

摘要： A pressure regulating reservoir includes, first and second conduits, a reservoir chamber, first and second reservoir ports, a valve portion including a first hydraulic passage, first and second valve bodies, and a valve seat including a second hydraulic passage, a piston portion including a piston and a spring, a mobile member, a protruding portion and a shaft, wherein the first hydraulic passage is closed by the second valve body thereby interrupting the fluid communication when the pump is not actuated, a pressure difference between a brake hydraulic pressure within the reservoir chamber and a brake hydraulic pressure within the first reservoir port is regulated when the pump is actuated while the brake hydraulic pressure is generated by the brake hydraulic pressure generating means, and the second hydraulic passage is opened to establish the fluid communication when the pump is actuated while no brake hydraulic pressure is generated.

摘要翻译： 压力调节储存器包括第一和第二导管，储存室，第一和第二储存口，包括第一液压通道，第一和第二阀体以及包括第二液压通道的阀座的阀部分，活塞部分包括 活塞和弹簧，移动构件，突出部分和轴，其中第一液压通道被第二阀体关闭，从而当泵未被致动时中断流体连通，内部的制动液压之间的压力差 当泵由制动液压产生装置产生制动液压时致动储油室和第一贮存口内的制动液压，并且当泵的开启时第二液压通道打开以建立流体连通 在不产生制动液压的情况下被致动。

公开(公告)号：US08672418B2

公开(公告)日：2014-03-18

申请号：US12945302

申请日：2010-11-12

申请人： Tomoo Harada ,  Tsunekazu Nishida

发明人： Tomoo Harada ,  Tsunekazu Nishida

IPC分类号： B60T13/18

CPC分类号： F04B1/0408 ,  B60T8/4031 ,  F04B53/126 ,  F04B53/143

摘要： A sealing structure is provided wherein an annular groove formed in a pump cylinder of a piston pump receives therein a seal ring made of a synthetic resin material and having an inner circumferential surface fluid-tightly contacting an outer circumferential surface of the pump piston and an O-ring arranged on the outer circumferential side of the seal ring and urging the seal ring radially inward. The seal ring is formed at its axial end portions with flange portions for preventing the O-ring from coming off. In the state that the seal ring and the O-ring are fitted in the annular groove, the flange portions do not receive a load from the O-ring, and a surface pressure which the seal ring applies to the outer circumferential surface of the piston at an axial center portion thereof is set to be higher than surface pressures which it applies to the outer circumferential surface of the piston at axial end portions thereof.

摘要翻译： 提供一种密封结构，其中形成在活塞泵的泵筒中的环形槽容纳由合成树脂材料制成的密封环，并且具有与泵活塞的外周表面流体紧密接触的内周表面和O 设置在密封环的外周侧并径向向内推动密封环。 密封环在其轴向端部处形成有用于防止O形环脱落的凸缘部分。 在密封环和O形环装配在环形槽中的状态下，凸缘部分不会从O形环中受到负载，并且密封环施加到活塞外周表面的表面压力 其轴向中心部分被设定为高于其在轴向端部处对活塞的外周面施加的表面压力。