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1. 发明专利

JP2006046283A Inscribed type gear pump 审中-公开
标题翻译：插入式齿轮泵
公开(公告)号：JP2006046283A
公开(公告)日：2006-02-16
申请号：JP2004232048
申请日：2004-08-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , KUSATSUMI TAKUMI , NAKAKUKI YASUHITO , NAKADA MITSUAKI , OTAKI MIZUO
IPC分类号： F04C2/10 , F04C15/00
CPC分类号： F04C2/102 , F04C15/0042
摘要： PROBLEM TO BE SOLVED: To secure stable pump delivery quantity regardless of machining tolerance of an outer rotor and an inner rotor.
SOLUTION: Between internal and external teeth 3a and 4a of the outer rotor 3 and the inner rotor 4, an enclosure part 15 in which the volume of a pump chamber 6 formed there becomes the largest and an engagement part 16 where the volume of the pump chamber becomes the smallest are provided. A low pressure passage 17 communicated with atmospheric pressure is provided in the inner diameter direction of a cam ring 12 provided at an angular position of θin a range of 20-50° from a border line X connecting the enclosure part to the engagement part toward a delivery port 8. An opening part 17a at one end of the low pressure passage is opened/closed by an outer circumferential surface 3b of the outer rotor to balance pressure added to the outer rotor, thereby contact pressure between the teeth in the enclosure part is set proper.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：无论外转子和内转子的加工公差如何，都能确保稳定的泵输送量。解决方案：在外转子3的内外齿3a和4a与内转子4之间，形成在其中的泵室6的容积最大的外壳部分15和其中容积的泵室成为最小的。与凸轮环12的内径方向设置有一个低压通道17，该凸轮环12设置在从连接外壳部分到接合部分的边界线X到20-50°的θ的角度位置处输送口8.在低压通道的一端的开口部分17a由外转子的外圆周表面3b打开/关闭，以平衡加到外转子上的压力，从而外壳部分的齿之间的接触压力设置正确。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2007313911A Power steering device 审中-公开
标题翻译：动力转向装置
公开(公告)号：JP2007313911A
公开(公告)日：2007-12-06
申请号：JP2006142192
申请日：2006-05-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： B62D5/07
摘要： PROBLEM TO BE SOLVED: To provide a power steering device capable of preventing occurrence of odd steering feeling by operating a fail/safe mechanism at failure of a return check valve. SOLUTION: A threshold value X of steering torque is determined from a vehicle speed, a steering angle and steering torque read in step 1 at step 2. When it is determined that the present steering torque is larger than the threshold value X at step 3, it is determined that steering assist is not performed by failure of first and second poppet valves or the like. Steering assist control is stopped at step 5, and a control signal is outputted to a solenoid selector valve of the fail/safe mechanism to open a communication passage and first and second hydraulic chambers are made in the communication state to make it in the manual steering state at step 6. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过在止回阀故障时操作失效/安全机构来防止发生奇怪转向感的动力转向装置。解决方案：根据在步骤2中的步骤1中读取的车速，转向角和转向转矩来确定转向转矩的阈值X.当确定当前转向转矩大于阈值X at 步骤3，确定第一和第二提升阀等的故障不执行转向辅助。在步骤5停止转向辅助控制，并且将控制信号输出到故障/安全机构的电磁选择阀以打开连通通道，使第一和第二液压室处于连通状态，使其进入手动转向（C）2008，JPO＆INPIT

3. 发明专利

JP2006152927A Inscribed type gear pump 有权
标题翻译：插入式齿轮泵
公开(公告)号：JP2006152927A
公开(公告)日：2006-06-15
申请号：JP2004345070
申请日：2004-11-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： F04C2/10 , B62D5/07 , F04C14/00
摘要： PROBLEM TO BE SOLVED: To increase pump efficiency by stopping the inflow of a leaked hydraulic oil to a low pressure side while reducing a tip clearance. SOLUTION: In this inscribed type gear pump, first and second ports 7 and 8 forming a suction side and a discharge side according to whether the pump is rotating normally or reversely are formed at symmetrical positions with respect to an axis X connecting a closed part 20 where the volume of a pump chamber 6 formed between the inner and outer teeth of outer and inner rotors 3 and 4 is maximized to a meshed part 21 where the volume is minimized. First and second oil grooves 22 and 23 leading a high-pressure oil through first and second communication passages 24 and 25 are formed in the outer peripheral surface of a cam ring 12 near the closed part. First and second check valves 26 and 26a allowing the inflow of the high-pressure oil only in the oil groove directions are installed in the other end opening parts 24b and 24b of the communication passages. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过将泄漏的液压油流入低压侧同时减小顶端间隙来提高泵的效率。解决方案：在这种内接式齿轮泵中，根据泵是正常或反向旋转形成吸力侧和排出侧的第一和第二端口7和8形成在相对于连接闭合部分20，其中形成在外转子3和内转子4的内齿和外转子之间的泵室6的体积最大化到体积最小的网状部分21。在闭合部分附近的凸轮环12的外周面形成有通过第一连通路24和第二连通路25引导高压油的第一和第二油槽22和23。只有在油槽方向上流入高压油的第1止回阀26和第2止动阀26a安装在连通路的另一端开口部24b，24b中。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2006299846A Internal gear pump 审中-公开
标题翻译：内齿轮泵
公开(公告)号：JP2006299846A
公开(公告)日：2006-11-02
申请号：JP2005119347
申请日：2005-04-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： F04C2/10
摘要： PROBLEM TO BE SOLVED: To provide an internal gear pump for reducing complexity on the clearance control between a housing and an outer rotor.
SOLUTION: This internal gear pump 1 has a first port and a second port symmetrically arranged to the first axis for connecting a shutting-in part having the maximum volume and a meshing part having the minimum volume among a plurality of pump rooms formed between an internal teeth gear of the outer rotor 30 and an external teeth gear of an inner rotor 40 and opening in a plurality of these pump rooms. Radial directional clearance formed between an outer rotor storage part and the outer rotor, is arranged so that the second axis direction respectively orthogonal to this first axis and a driving shaft becomes smaller than the first axis direction.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于降低外壳和外转子之间的间隙控制的复杂性的内齿轮泵。解决方案：该内齿轮泵1具有第一端口和第二端口，该第一端口和第二端口对称地设置在第一轴线上，用于连接具有最大容积的关闭部分和形成有多个泵室的具有最小体积的啮合部分在外转子30的内齿齿轮和内转子40的外齿齿轮之间，在多个这些泵室中开口。形成在外转子收纳部与外转子之间的径向间隙被布置成使得与该第一轴正交的第二轴线方向和驱动轴变得小于第一轴线方向。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006105029A Oil pump 审中-公开
标题翻译：油泵
公开(公告)号：JP2006105029A
公开(公告)日：2006-04-20
申请号：JP2004293148
申请日：2004-10-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： F04C14/04 , F04C2/10 , F04C15/00
CPC分类号： F16N13/20 , F04C2/086 , F04C2/102 , F04C14/04 , F04C14/10
摘要： PROBLEM TO BE SOLVED: To provide an oil pump having stabilized discharge characteristic, by eliminating difference between the discharge characteristics on the right and left sides in normal and reverse rotations.
SOLUTION: The oil pump has: a first axial hole formed at a position corresponding to a meshed portion of the minimum pump capacity out of a plurality of pump chambers; a second axial hole formed in a cam ring at a position corresponding to a closed portion of the maximum pump capacity out of the plurality of pump chambers; a first locating pin inserted into a first housing, a second housing and the first axial hole; and a second locating pin inserted into the first housing, the second housing and the second axial hole. A suction port and a discharge port are switched by normal/reverse rotation of the driving shaft. The first axial hole and a second axial hole are respectively formed in shape of long hole extending in an axial direction.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过消除正转和反转中右侧和左侧的排出特性之间的差异来提供具有稳定的排出特性的油泵。解决方案：油泵具有：形成在与多个泵室中的最小泵容量的啮合部分对应的位置处的第一轴向孔; 第二轴向孔，其形成在与所述多个泵室中的所述最大泵容量的关闭部分对应的位置处的凸轮环中; 插入第一壳体，第二壳体和第一轴向孔中的第一定位销; 以及插入到所述第一壳体中的第二定位销，所述第二壳体和所述第二轴向孔。通过驱动轴的正向/反向旋转来切换吸入口和排出口。第一轴向孔和第二轴向孔分别形成为沿轴向延伸的长孔的形状。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005170117A Power steering device 有权
标题翻译：动力转向装置
公开(公告)号：JP2005170117A
公开(公告)日：2005-06-30
申请号：JP2003409761
申请日：2003-12-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OTAKI MIZUO , KURATA MASAKAZU
IPC分类号： B62D5/07
摘要： PROBLEM TO BE SOLVED: To provide a device capable of improving work efficiency for extracting air and supplying an operating fluid to a hydraulic circuit and respective hydraulic chambers, and capable of reducing cost. SOLUTION: This device is provided with a hydraulic power cylinder 6 for assisting steering force of a rack and pinion mechanism 4, a trochoid pump 8 for supplying hydraulic pressure to the hydraulic chambers 11a and 11b of the hydraulic power cylinder through a pair of first and second passages 14 and 15, and a reservoir tank 18 for supplying the operating fluid to the trochoid pump. First and second communication passages 19 and 20 for communicating the reservoir tank and the first and second passages are provided, and plug members 23 and 24 are provided so that the first and second communication passages are communicated when the operating fluid is filled in the hydraulic circuit and the hydraulic chamber and the communication is shut when the filling work is ended. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够提高工作效率的装置，用于提取空气并将工作流体供应到液压回路和各个液压室，并且能够降低成本。解决方案：该装置设置有用于辅助齿条和小齿轮机构4的转向力的液压动力缸6，用于通过一对向液压动力缸的液压室11a和11b供应液压的次摆线8 第一和第二通道14和15以及用于将工作流体供应到次摆线泵的储存箱18。提供了用于连通储存箱和第一和第二通道的第一和第二连通通道19和20，并且插塞构件23和24设置成使得当工作流体填充在液压回路中时第一和第二连通通道连通当灌装作业结束时，液压室和通讯关闭。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2006299845A Internal gear pump 审中-公开
标题翻译：内齿轮泵
公开(公告)号：JP2006299845A
公开(公告)日：2006-11-02
申请号：JP2005119346
申请日：2005-04-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： F04C2/10
摘要： PROBLEM TO BE SOLVED: To provide an internal gear pump wherein complexity is reduced on the control of the clearance of an outer rotor and an inner rotor being a rotary body against a housing being a fixed body.
SOLUTION: This internal gear pump has a first port and a second port opening in a plurality of pump rooms, a side plate movably arranged in the shaft direction between the housing, the outer rotor and the inner rotor and having a first pressure introducing hole arranged so as to penetrate in the shaft direction through a position corresponding to the first port and a second pressure introducing hole arranged so as to penetrate in the shaft direction through a position corresponding to the second port, a first seal member arranged on the opposite side in the shaft direction to both rotors of the side plate and defining a first area including the first pressure introducing hole from the other area, and a second seal member arranged on the opposite side in the shaft direction to both rotors of the side plate and defining a second area including the second pressure introducing hole from the other area.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种内齿轮泵，其中外转子的间隙的控制和作为旋转体的内转子抵靠作为固定体的壳体的间隙减小了复杂性。解决方案：该内齿轮泵在多个泵室中具有第一端口和第二端口，侧板在轴向方向上可移动地布置在壳体，外转子和内转子之间，并具有第一压力引导孔，其布置成沿轴向穿过与所述第一端口相对应的位置;以及第二压力引入孔，所述第二压力引入孔布置成沿轴向穿过与所述第二端口相对应的位置;第一密封构件，在轴向方向上与侧板的两个转子相对，并且限定了包括来自另一区域的第一压力引入孔的第一区域，以及第二密封构件，其在轴向方向上相对于侧板的两个转子并且从另一区域限定包括第二压力导入孔的第二区域。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006232034A Filter device and power steering device 审中-公开
标题翻译：过滤装置和动力转向装置
公开(公告)号：JP2006232034A
公开(公告)日：2006-09-07
申请号：JP2005047678
申请日：2005-02-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： B62D5/07 , B62D5/06
摘要： PROBLEM TO BE SOLVED: To provide a power steering device suppressing that contaminants are caught in a pump by filtering, even in a structure wherein hydraulic oil alternately comes and goes between right and left pressure chambers according to normal/reverse rotations of the pump. SOLUTION: The power steering device comprises a hydraulic power cylinder assisting steering force of a steering mechanism coupled to turning wheels, a reversible pump equipped with a pair of discharging ports supplying oil pressure to both pressure chamber of the hydraulic power cylinder through first and second passages, a motor connected to the reversible pump and make the reversible pump normally/reversely rotate, a steering load detecting means detecting or estimating a steering load of a steering wheel controlling to turn the turning wheels, a motor controlling means outputting a driving signal to the motor so as to generate required oil pressure to the motor on the basis of the steering load, and filters provided between the reversible pump and both pressure chambers of the hydraulic power cylinder. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种动力转向装置，其通过过滤来抑制污染物被捕获在泵中，即使在液压油交替地到达并按照正反转的左右压力室之间进行的结构泵。解决方案：动力转向装置包括一个辅助转向机构的转向力的液压动力缸，该转向装置与转动轮相连接;一个可逆的泵，其具有一对排出口，该排出口通过首先向液压动力缸的两个压力室提供油压和第二通道，连接到可逆泵并使可逆泵正常/反向旋转的马达，用于检测或估计控制转向车轮的方向盘的转向载荷的转向载荷检测装置，输出驾驶员的马达控制装置信号到电动机，以便基于转向负载向电动机产生所需的油压，以及设置在可逆泵和液压动力缸的两个压力室之间的过滤器。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2006046273A Internal gear pump 审中-公开
标题翻译：内齿轮泵
公开(公告)号：JP2006046273A
公开(公告)日：2006-02-16
申请号：JP2004231459
申请日：2004-08-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OTAKI MIZUO , KURATA MASAKAZU
IPC分类号： F04C2/10 , F04C15/00
摘要： PROBLEM TO BE SOLVED: To provide an internal gear pump, in which sliding resistance between an outer rotor and a seal member is eliminated to improve energy efficiency, and in which possibility of abrasion damage in a seal means is avoided.
SOLUTION: This internal gear pump is provided with the outer rotor rotatably contained in a housing member, having an internal gear on the inner circumferential side, the inner rotor rotatably provided on the inner circumferential side of the outer rotor, having an external gear to be engaged with the internal gear on the outer circumferential side, a drive shaft connected to the inner rotor to be driven to rotate, and an intermediate ring provided between the outer rotor and the housing member to be relatively movable to the housing member, in such a way that the outer rotor is relatively rotatable.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种内部齿轮泵，其中消除了外转子和密封构件之间的滑动阻力以提高能量效率，并且避免了密封装置中的磨损损伤的可能性。解决方案：该内齿轮泵设置有可旋转地容纳在壳体构件中的外转子，其具有内周侧的内齿轮，可旋转地设置在外转子的内周侧的内转子，具有外部与外周侧的内齿轮啮合的齿轮，与内转子相连接以被驱动旋转的驱动轴，以及设置在外转子和壳体部件之间以可相对移动到壳体部件的中间环，使外转子相对旋转。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2006207408A Internal gear pump 审中-公开
标题翻译：内齿轮泵
公开(公告)号：JP2006207408A
公开(公告)日：2006-08-10
申请号：JP2005017722
申请日：2005-01-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURATA MASAKAZU , OTAKI MIZUO
IPC分类号： F04C2/10
摘要： PROBLEM TO BE SOLVED: To prevent occurrence of pump pulsation or vibration, in an internal gear pump for supplying oil pressure to an anti-lock brake system of an automobile or a hydraulic power cylinder for assist of a power steering device.
SOLUTION: A plurality of pump chambers 27 are formed between an external teeth 23a of an inner rotor 23 and internal teeth 24a of an outer rotor 24 which are mutually meshed in a part of their circumferences. The pump chambers 27 are mutually formed at positions symmetric with respect to an axis X out of the plurality of pump chambers 27, and are individually opened to discharge port 28a and suction port 28b. On a discharge port 28a side, a first oil groove 29a is formed on a confinement part T side to communicate with a discharge port 28a through a first communication passage 30a, and a third oil groove 29c is formed on a meshing part K side. On a suction port 28b side, a second oil groove 29b is formed on the confinement part T side to communicate with the suction port 28b through a second communication passage 30b, and a fourth oil groove 29b is formed on the meshing part K side.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题为了防止在用于向动力转向装置辅助的汽车或液压动力缸的防抱死制动系统供给油压的内齿轮泵中发生泵脉动或振动。解决方案：多个泵室27形成在内转子23的外齿23a和外转子24的内齿24a之间，它们在其周向的一部分中相互啮合。泵室27在多个泵室27中相对于轴线X对称的位置处相互形成，并且分别打开到排出口28a和抽吸口28b。在排出口28a侧，第一油槽29a形成在限制部T侧，通过第一连通路30a与排出口28a连通，第三油槽29c形成在啮合部K侧。在吸入口28b侧，在限制部T侧形成有第二油槽29b，通过第二连通路30b与吸入口28b连通，在啮合部K侧形成有第四油槽29b。版权所有（C）2006，JPO＆NCIPI

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