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1. 发明专利

JP2009024570A Variable displacement vane pump 有权
标题翻译：可变位移帆泵
公开(公告)号：JP2009024570A
公开(公告)日：2009-02-05
申请号：JP2007187709
申请日：2007-07-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAMOTO MICHIYA , YAMAMURO SHIGEAKI
IPC分类号： F04C2/344 , F04C14/22 , F04C15/00
摘要： PROBLEM TO BE SOLVED: To provide a variable displacement vane pump capable of introducing suction pressure to a second fluid chamber without disturbing lubrication between sliding contact surfaces of a cam ring and a pressure plate.
SOLUTION: A long introduction passage 40 is extended to be formed, comprising a first introduction part 41 introducing working fluid to a pressure plate 11 side, namely an axial direction end surface side far from a suction passage 16 of a cam ring 6 while detouring the cam ring 6, a first and a second fluid pressure chamber P1, P2 from the suction passage 16, and a second introduction part 42 directly opening to the second fluid pressure chamber P2 to turn to an axial direction reverse side via the pressure plate 11 from the first introduction part 41. Pump suction pressure is introduced to the second fluid pressure chamber P2 by the introduction passage 40.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够将吸入压力引入第二流体室的可变排量叶片泵，而不会扰动凸轮环和压力板的滑动接触表面之间的润滑。解决方案：长导入通道40延伸形成，其包括将工作流体引入压力板11侧的第一引入部41，即远离凸轮环6的吸入通道16的轴向端面侧同时迂回凸轮环6，来自吸入通道16的第一和第二流体压力室P1，P2，以及直接通向第二流体压力室P2的第二导入部42，经由压力转向轴向反向侧泵吸入压力通过引入通道40被引入第二流体压力室P2。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2005096729A Power steering device and its controlling method 有权
标题翻译：动力转向装置及其控制方法
公开(公告)号：JP2005096729A
公开(公告)日：2005-04-14
申请号：JP2004037705
申请日：2004-02-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SASAKI MITSUO , YOKOTA TADAHARU , SAKAKI TOSHIMITSU , HIRAMOTO MICHIYA
IPC分类号： B62D6/00 , B62D5/065 , B62D5/07 , B62D5/30 , B62D101/00 , B62D113/00 , B62D119/00 , B62D127/00 , B62D137/00
CPC分类号： B62D5/0481 , B62D5/065 , B62D5/30
摘要： PROBLEM TO BE SOLVED: To provide a power steering device capable of generating a sufficient assist force using a backup mechanism when an oil pressure feeding mechanism goes in failure. SOLUTION: The power steering device is equipped with a hydraulic power cylinder 5 to assist the steering force of a rack-pinion mechanism 4 and a first oil pressure feeding mechanism 8 consisting of a first trochoid pump 23 and a first electric motor 24 for feeding the oil pressure selectively via a first 6 and a second passage 7. When the first oil pressure feeding mechanism has gone in failure, a second oil pressure feeding mechanism 11 feeds the working oil pressure to the two oil pressure chambers selectively from a third 9 and a fourth passage 10 in conformity to the command signal given by a control unit 14. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种当油压给料机构失效时能够使用后备机构产生足够的辅助力的动力转向装置。解决方案：动力转向装置配备有用于辅助齿条小齿轮机构4的转向力的液压动力缸5和由第一次摆线泵23和第一电动机24组成的第一供油机构8 用于经由第一通道6和第二通道7选择性地供给油压。当第一供油机构失效时，第二供油机构11选择性地将工作油压力从第三油压供给机构 9和第四通道10，其符合由控制单元14给出的命令信号。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2007023992A Oil pump 审中-公开
标题翻译：油泵
公开(公告)号：JP2007023992A
公开(公告)日：2007-02-01
申请号：JP2005210986
申请日：2005-07-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIDA YUKIO , MUTO TAKAO , HIRAMOTO MICHIYA
IPC分类号： F04C2/344
摘要： PROBLEM TO BE SOLVED: To provide an oil pump capable of preventing seizure between a rotor and a rear body by preventing an oil film shortage by partial sliding with an opposed end surface of the rear body by an inclination of the rotor caused by deflective deformation of a driving shaft.
SOLUTION: This oil pump has the driving shaft 8 rotatably stored in a pump body, a cam ring forming a plurality of pump rooms on the inner peripheral side together with the rotor 9 and a vane, suction-delivery ports arranged in the rear body 3 arranged on one side in the axial direction of the cam ring, a first fluid pressure chamber and a second fluid pressure chamber formed on the outer peripheral side of the cam ring. An oil passage 29 is arranged in the rear body, and the seizure in rotation with the rear body by an inclination of the rotor is prevented by introducing much pump oil to clearance by sucking the pump oil leaked to the microscopic clearance C between the opposed end surface 3a of the rear body and a rotor one side surface 9a in the low pressure suction passage 19 side via the oil passage.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种油泵，其能够通过由于后转体的相对端面部分地由于转子的倾斜而被部分滑动防止油膜短缺而导致转子和后体之间的卡塞驱动轴的偏转变形。解决方案：该油泵具有可旋转地存储在泵体内的驱动轴8，与转子9和叶片一起形成在内周侧的多个泵室的凸轮环，配置在在凸轮环的轴向一侧配置的后体3，形成在凸轮环的外周侧的第一流体压力室和第二流体压力室。油路29布置在后体中，并且通过将泄漏到微观间隙C的泵油吸引到相对的端部之间的泵油来引入大量的泵油，从而防止转子倾斜而与后体的旋转卡住后体的表面3a和经由油路的低压吸入通路19侧的转子一侧面9a。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2005306380A Power steering device 有权
标题翻译：动力转向装置
公开(公告)号：JP2005306380A
公开(公告)日：2005-11-04
申请号：JP2005209201
申请日：2005-07-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOKOTA TADAHARU , KURATA MASAKAZU , HIRAMOTO MICHIYA , SUDO YUKIO
IPC分类号： B62D5/07 , B62D5/09
摘要： PROBLEM TO BE SOLVED: To provide a power steering device capable of realizing enhancement of steering stability against kick back from a road surface and enhancement of responsiveness of steering assistance, capable of preventing a hydraulic circuit from becoming the over-load state, capable of reducing driving energy of a reversible pump and capable of preventing the circuit from becoming the over-heat state. SOLUTION: A drain flow passage 9 is provided in such a state that it communicates a pump chamber of the reversible pump P with a reservoir tank RT and an orifice interposed on the drain flow passage 9 is constituted by slide clearances k1, k2 formed by both side surfaces of a driving gear and a driven gear in the reversible pump P and a slide surface of a pump head 1 and a side plate 3. A differential pressure valve 10 for allowing a flow from the pump chamber (hydraulic circuit 28) side to the reservoir tank RT side is interposed in the drain flow passage 9 between the orifice and the reservoir tank RT. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种能够实现提高转向稳定性而不会从路面反弹而提高转向辅助的响应性的动力转向装置，能够防止液压回路成为过载状态，能够减少可逆泵的驱动能量并且能够防止电路变得过热状态。解决方案：排水流路9设置成将可逆泵P的泵室与储存箱RT连通并且设置在排水流路9上的节流孔由滑动间隙k1，k2构成由可逆泵P中的驱动齿轮和从动齿轮的两个侧面形成，以及泵头1和侧板3的滑动面。用于允许从泵室流出的差压阀10（液压回路28 ）侧插入到储存罐RT侧，位于孔和贮存箱RT之间的排出流路9中。版权所有（C）2006，JPO＆NCIPI

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