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公开(公告)号：US20180252215A1
公开(公告)日：2018-09-06
申请号：US15758091
申请日：2016-08-31
Applicant: KYB Corporation
Inventor： Hiromi SHIMONO , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Hirotoshi KONDOU
Abstract: A vane pump includes a high-pressure chamber formed as a groove in a bottom portion of a pump-accommodating concave portion. The working fluid is discharged from a plurality of discharge ports leading to the high-pressure chamber. A high-pressure passage has an opening portion opening to the high-pressure chamber and guides the working fluid to the outside of the high-pressure chamber. In the vane pump, one of the plurality of discharge ports is arranged so as to face the opening portion of the high-pressure passage, and the flow-passage cross-sectional area of the high-pressure chamber is smaller than the total flow-passage cross-sectional area of the plurality of the discharge ports.
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公开(公告)号：US20180258928A1
公开(公告)日：2018-09-13
申请号：US15760464
申请日：2016-09-08
Applicant: KYB Corporation
Inventor： Tomoyuki NAKAGAWA , Masamichi SUGIHARA , Yoshiyuki MAKI
IPC: F04C2/344 , F04C15/00 , F04C18/067
CPC classification number: F04C2/344 , F04C15/00 , F04C15/0057 , F04C18/067
Abstract: A cartridge vane pump includes a head pin that penetrates through a cover, a cover-side side plate and a cam ring that are fixed to an adapter. The head pin has a shaft portion that is fixed to the adapter at a tip end thereof, and a restricting portion that has a diameter larger than that of the shaft portion and being formed on a base end of the shaft portion. The cam ring, the cover, the cover-side side plate and a body-side side plate are held between the restricting portion and the adapter.
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公开(公告)号：US20180149153A1
公开(公告)日：2018-05-31
申请号：US15578437
申请日：2016-06-01
Applicant: KYB Corporation
Inventor： Koichiro AKATSUKA , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Fumiyasu KATOU , Hiroki GOMI
CPC classification number: F04C2/344 , F01C21/0863 , F01C21/108 , F04C2/3446 , F04C11/00 , F04C11/001 , F04C14/02 , F04C14/26 , F04C15/0049 , F04C15/06 , F04C2270/12 , F04C2270/13
Abstract: A pump device includes: a main pump and a sub pump; and a switching valve that switches so as to supply the hydraulic oil discharged from the sub pump to the hydraulic device, or to return the hydraulic oil discharged from the sub pump to the suction side. The main pump and the sub pump each include: a rotor, a discharge port into which the hydraulic oil discharged from a pump chamber is led, and a groove-shaped discharge-side notch formed from an opening edge of the discharge port toward a direction opposite to a rotation direction of the rotor. The switching valve switches according to a rotation speed of the drive shaft. At least one discharge-side notch of the sub pump is formed so that a resistance applied to the flow of the hydraulic oil passing therethrough is greater than that of the discharge-side notch of the main pump.
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公开(公告)号：US20180112661A1
公开(公告)日：2018-04-26
申请号：US15568844
申请日：2016-04-19
Applicant: KYB Corporation
Inventor： Koichiro AKATSUKA , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Fumiyasu KATOU , Hiroki GOMI
CPC classification number: F04C14/26 , F04B2201/1213 , F04C2/344 , F04C14/22 , F04C14/223 , F04C14/24 , F04C2210/206 , F04C2270/20 , F04C2270/215 , F04C2270/585
Abstract: A variable displacement vane pump includes: a control orifice that imparts resistance to a flow of working oil discharged from pump chambers; a flow-amount control valve that operates in accordance with an upstream-downstream differential pressure of the control orifice and controls a flow amount of the working oil discharged from the pump chambers; a variable control valve that is operated by the working oil that has passed through the control orifice and controls an amount of eccentricity of a cam ring with respect to a rotor by controlling a pressure difference between a first fluid pressure chamber and a second fluid pressure chamber; and a return passage that is connected to the flow-amount control valve and circulates a part of the working oil discharged from the pump chambers through a suction passage.
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公开(公告)号：US20160377078A1
公开(公告)日：2016-12-29
申请号：US15125837
申请日：2015-09-02
Applicant: KYB Corporation
Inventor： Koichiro AKATSUKA , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Fumiyasu KATOU , Hiroki GOMI
CPC classification number: F04C14/26 , F04C2/3446 , F04C15/06 , F04C2210/206 , F04C2240/10 , F04C2240/20 , F04C2270/215 , F04C2270/585 , F04C2270/86
Abstract: A pump device includes a pump, a flow control valve having a spool that returns a part of working fluid discharged from the pump to a suction side, and a differential pressure adjusting device that adjusts a differential pressure acting on both end portions of the spool to a target differential pressure, and the differential pressure adjusting device includes a pressure regulating chamber that communicates with a second fluid pressure chamber and a pilot chamber into which pressure in the discharge channel is guided: and a pressure in the pressure regulating chamber is adjusted such that a differential pressure between the pressure in the pressure regulating chamber and a pressure in the pilot chamber becomes the target differential pressure.
Abstract translation: 泵装置包括泵，流量控制阀，其具有将从泵排出的工作流体的一部分返回到吸入侧的阀芯，以及调节作用于阀芯的两端部的压差的压差调节装置， 目标压差，压差调节装置包括与第二流体压力室和引导室连通的压力调节室，排气通道中的压力被引导到该导向室中;压力调节室中的压力被调整为使得 压力调节室中的压力与先导室中的压力之间的压差成为目标压差。
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Patent Agency Ranking
公开(公告)号：US20170067462A1
公开(公告)日：2017-03-09
申请号：US15123029
申请日：2015-03-04
Applicant: KYB CORPORATION
Inventor： Masamichi SUGIHARA , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Tsutomu KOMIYA
CPC classification number: F04C2/3448 , F01C21/0809 , F01C21/0854 , F01C21/0863 , F01C21/10 , F01C21/108 , F04C2/3446 , F04C15/00 , F04C2230/603 , F04C2240/10 , F04C2240/20
Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; and a pump body having an accommodating concave portion accommodating the cam ring. The cam ring includes a ring fitting portions formed in a plurality of regions on an outer circumference and a ring small-diameter portions formed on the outer circumference so as to have an outer diameter smaller than those of the ring fitting portions. The accommodating concave portion has a body fitting portion to which the ring fitting portions is fitted and a body large-diameter portions formed on the inner circumference in a plurality of regions so as to have an inner diameter lager than that of the body fitting portions.
Abstract translation: 叶片泵包括转子; 多个叶片; 凸轮环 以及具有容纳所述凸轮环的容纳凹部的泵体。 凸轮环包括形成在外周上的多个区域中的环形装配部分和形成在外周上的环形小直径部分，以具有比环形装配部分的外径小的外径。 容纳凹部具有配合环状配合部的主体嵌合部和形成在多个区域的内周上的主体大径部，其内径比主体嵌合部的内径大。
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公开(公告)号：US20220010795A1
公开(公告)日：2022-01-13
申请号：US17283668
申请日：2019-10-29
Applicant: KYB Corporation
Inventor： Yusuke OHMORI , Tomoyuki NAKAGAWA , Masamichi SUGIHARA , Atsumi TAKAHASHI , Satoshi WATANABE
IPC: F04C2/067
Abstract: A vane pump includes: a rotor; vanes freely slidably received in the rotor; a cam ring having a cam face with which the vanes come into sliding contact; a side member having a sliding contact surface with which side surfaces of the rotor and the vanes come into sliding contact; pump chambers; and a discharge port configured to guide working fluid discharged from the pump chambers. The side member has a guide surface that is provided on an end portion side of the opening portion, the guide surface being configured to push the end portions of the vanes upward and guide them toward the sliding contact surface of the side member as the rotor is rotated in the reverse rotation direction.
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公开(公告)号：US20190072091A1
公开(公告)日：2019-03-07
申请号：US15767215
申请日：2016-09-20
Applicant: KYB Corporation
Inventor： Yoshiyuki MAKI , Tomoyuki NAKAGAWA , Masamichi SUGIHARA
Abstract: A vane pump includes a rotor that is rotationally driven; vanes inserted into the rotor in a freely slidable manner; pump chambers that are defined between the vanes at adjacent positions; suction ports that guide working oil to the pump chambers; suction pressure chamber that is communicated with the suction ports and that stores the working oil; and a suction passage that is connected to the suction pressure chamber and that has an suction opening end that opens at an outer surface of a pump body. In a state in which the vane pump is mounted, the suction pressure chamber is mounted below the suction opening end of the suction passage.
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公开(公告)号：US20180306182A1
公开(公告)日：2018-10-25
申请号：US15763833
申请日：2016-09-02
Applicant: KYB Corporation
Inventor： Yoshiyuki MAKI , Tomoyuki FUJITA , Tomoyuki NAKAGAWA , Masamichi SUGIHARA
CPC classification number: F04C2/344 , F01C21/0881 , F04C15/00 , F04C15/0023
Abstract: A vane pump includes a rotor; a plurality of slits that are formed in the rotor, the plurality of vanes being respectively inserted into the plurality of slits in a slidable manner; a cam ring that has a cam face on which tip-ends of the vanes slide by the rotation of the rotor; and pump chambers that are defined by the rotor, the cam ring, and an adjacent pair of the vanes. The plurality of vanes have a plurality of first vanes that are formed by applying a DLC coating on a base material and second vanes that are formed such that the base material is exposed, the first vanes being respectively inserted into at least two adjacent slits of the plurality of slits.
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公开(公告)号：US20180283373A1
公开(公告)日：2018-10-04
申请号：US15758230
申请日：2016-09-08
Applicant: KYB Corporation
Inventor： Masamichi SUGIHARA , Tomoyuki NAKAGAWA , Yoshiyuki MAKI
Abstract: The cartridge vane pump includes a first connection channel that connects a first discharge port and a first discharge channel and a second connection channel that connects a second discharge port and a second discharge channel. An O-ring is provided on an outer circumference of a circular tube portion, the O-ring blocks communication between the first connection channel and the second connection channel.
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