公开(公告)号：US20190323498A1

公开(公告)日：2019-10-24

申请号：US16239015

申请日：2019-01-03

申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  JTEKT CORPORATION

发明人： Masaru OKUYAMA ,  Hiroyuki MORI ,  Mamoru TOHYAMA ,  Noriyuki EMOTO ,  Naohito YOSHIDA

IPC分类号： F04C2/32 ,  F01M1/02 ,  F16N13/20 ,  F16N15/00

摘要： A sliding member has a sliding surface sliding under a wet condition in which a lubricant oil exists. The sliding surface is coated with a laminate film comprising an upper layer and a lower layer. The lower layer comprises hydrogen-free amorphous carbon (hydrogen-free DLC) and carbon particles dispersed on or in the hydrogen-free DLC. The hydrogen-free DLC has a hydrogen content of 5 atom % or less when the lower layer as a whole is 100 atom %. The upper layer comprises boron-containing amorphous carbon (B-DLC) and has protrusions on a surface side of the upper layer along the carbon particles of the lower layer. The B-DLC has a boron content of 1-40 atom % when the upper layer as a whole is 100 atom %. The protrusions have a particle diameter of 0.5-5 μm and exist with a density of 20 protrusions/100 μm2 or more.

公开(公告)号：US20170276133A1

公开(公告)日：2017-09-28

申请号：US15466013

申请日：2017-03-22

申请人： JTEKT CORPORATION

发明人： Naohito YOSHIDA

IPC分类号： F04C15/06 ,  F16H61/00 ,  F04C2/344

CPC分类号： F04C15/06 ,  F01C21/0863 ,  F01C21/108 ,  F04C2/344 ,  F04C2/3446 ,  F04C2240/10 ,  F04C2240/20 ,  F16H61/0025

摘要： A vane pump sucks the hydraulic fluid from a first inlet port and discharges it into a first outlet port and, at the same time, sucks the hydraulic fluid from a second inlet port and discharges it into a second outlet port, as a rotor having a plurality of slits housing vanes and extending in a radial manner rotates. The vane pump has a first back-pressure groove that is communicated with some of the slits to supply a back pressure from the first outlet port to the corresponding vanes and a second back-pressure groove that is communicated with other of the slits to supply a back pressure from the second outlet port to the corresponding vanes. The vanes to which the back pressure is supplied from the first back-pressure groove include the vanes in pump chambers into which the hydraulic fluid is sucked from the second inlet port.

公开(公告)号：US20170335846A1

公开(公告)日：2017-11-23

申请号：US15592341

申请日：2017-05-11

申请人： JTEKT CORPORATION

发明人： Naohito YOSHIDA

IPC分类号： F04C15/00 ,  F04C18/14 ,  F04C29/12 ,  F04C2/14 ,  F04C29/00 ,  F04C15/06

CPC分类号： F04C15/0049 ,  F04C2/14 ,  F04C2/18 ,  F04C15/0046 ,  F04C15/06 ,  F04C18/14 ,  F04C29/0035 ,  F04C29/12 ,  F04C2240/30 ,  F04C2240/50 ,  F04C2240/60

摘要： In a gear pump, a gear chamber is defined in a housing hole of a housing. A pair of gears is housed in the gear chamber. The gears are rotatably supported at support holes of a pair of side plates via support shafts. As viewed in an axial direction of the support shafts during rotation of the gears, addendum circles of the gears displaced under a differential pressure between a low-pressure chamber and a high-pressure chamber form first contact points with respect to an inner peripheral surface that defines a housing hole. As viewed in the axial direction of the support shafts during rotation of the gears, the first contact points are covered with the side plates displaced under the differential pressure.

公开(公告)号：US20210095665A1

公开(公告)日：2021-04-01

申请号：US17025203

申请日：2020-09-18

申请人： AISIN AW CO., LTD. ,  JTEKT CORPORATION

发明人： Takahiro TORII ,  Kazuki KOJIMA ,  Naohito YOSHIDA ,  Tsuyoshi EBIHARA

IPC分类号： F04C15/06 ,  F04C2/344

摘要： A vane pump that includes a first communication passage that extends along an outer periphery of the cam ring and that guides a fluid that has not flowed into the first suction port from the first inflow passage to the second suction port; a second communication passage that extends along the outer periphery of the cam ring on an opposite side of the first communication passage with respect to the rotor and that guides a fluid that has not flowed into the second suction port from the second inflow passage to the first suction port; and a rectifying portion that guides the fluid from the second inflow passage so that the fluid flows into the second suction port along the outer periphery of the cam ring.

公开(公告)号：US20150078948A1

公开(公告)日：2015-03-19

申请号：US14485930

申请日：2014-09-15

申请人： JTEKT Corporation

发明人： Naohito YOSHIDA ,  Kazuhiro Watanabe

IPC分类号： F04C15/06 ,  F04C2/10

CPC分类号： F04C15/064 ,  F01C21/108 ,  F04C2/10 ,  F04C2/3446 ,  F04C15/0049 ,  F04C15/06

摘要： An oil pump includes a rotor, an outer peripheral member accommodating the rotor, a first plate, and a second plate. A discharge passage through which hydraulic fluid is discharged is connected to a discharge port of the first plate. A first pressure gradually-changing groove and a second pressure gradually-changing groove are formed such that a second flow passage area is larger than a first flow passage area, the first flow passage area being a flow passage area of the first pressure gradually-changing groove of the first plate, at a position at which the first pressure gradually-changing groove communicates with a transfer chamber passing through a sealed region, and the second flow passage area being a flow passage area of the second pressure gradually-changing groove of the second plate, at a position at which the second pressure gradually-changing groove communicates with the transfer chamber passing through the sealed region.

摘要翻译： 油泵包括转子，容纳转子的外周部件，第一板和第二板。 排出液压油的排出通路与第一板的排出口连接。 形成第一压力逐渐变化的槽和第二压力逐渐变化的槽，使得第二流路面积大于第一流路面积，第一流路面积是第一压力的流路面积逐渐变化 在第一压力逐渐变化的槽与通过密封区域的传送室连通的位置处的第一板的槽，第二流路区域是通过密封区域的第二压力逐渐变化槽的流路面积 在第二压力逐渐变化的沟槽与通过密封区域的传送室连通的位置处的第二板。