-
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.
-
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.
-
公开(公告)号：US20160333876A1
公开(公告)日：2016-11-17
申请号：US15111188
申请日：2015-01-19
Applicant: KYB Corporation
Inventor： Tomoyuki FUJITA , Koichiro AKATSUKA , Fumiyasu KATO , Hiroki GOMI
CPC classification number: F04C15/06 , F01C21/0863 , F04C2/3446 , F04C15/0049 , F04C2210/206 , F04C2240/20 , F04C2250/102 , F04C2250/30
Abstract: A vane pump used as a fluid pressure source includes: a rotor that is rotationally driven; a plurality of vanes that are inserted into the rotor in a freely slidable manner; a cam ring at which tip-end portions of the vanes slides as the rotor rotates; a pump chamber that is defined between the adjacent vanes; a suction port that guides working fluid to the pump chamber; a discharge port through which the working fluid discharged from the pump chamber is guided; a groove-like notch that extends from an opening edge of the discharge port in an opposite direction from rotation direction of the rotor, and the notch has a gradient-changing portion at which a rate of change of opening area is decreased in the rotation direction of the rotor.
Abstract translation: 用作流体压力源的叶片泵包括：旋转驱动的转子; 以可自由滑动的方式插入转子中的多个叶片; 凸轮环，当转子旋转时，叶片的尖端部分滑动; 在相邻叶片之间限定的泵室; 将工作流体引导到泵室的吸入口; 引导从泵室排出的工作流体的排出口; 从所述排出口的开口边缘沿与所述转子的旋转方向相反的方向延伸的槽状切口，所述切口具有梯度变化部，所述切口部的开口面积的变化率在旋转方向上减小 的转子。
-
公开(公告)号：US20220178369A1
公开(公告)日：2022-06-09
申请号：US17600549
申请日：2020-03-03
Applicant: KYB Corporation
Inventor： Kouhei KUBO , Tomoyuki FUJITA , Koichiro AKATSUKA , Yoshiyuki MAKI
IPC: F04C15/00 , F04C18/344 , F04C2/344
Abstract: A vane pump is provided with: a pump housing having an accommodating concave portion; and a pump cartridge accommodated in the accommodating concave portion, wherein the pump cartridge has: a rotor; a plurality of vanes received in a plurality of slits formed in the rotor; a cam ring formed with a cam face on an inner circumference of the cam ring; and a first side plate provided at the opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween, the first side plate has a first projected portion projected radially outward, and the pump cartridge is anchored to the pump housing via the first projected portion.
-
公开(公告)号：US20180258931A1
公开(公告)日：2018-09-13
申请号：US15759990
申请日：2016-08-29
Applicant: KYB Corporation
Inventor： Koichiro AKATSUKA , Tomoyuki FUJITA , Hiroki GOMI , Shota SHINDO
CPC classification number: F04C15/0003 , F04C2/324 , F04C2/344 , F04C15/00 , F04C15/06
Abstract: A vane pump includes a pump cartridge that is accommodated in an accommodating space defined by the concave portion and the pump cover. The pump cartridge includes a first side plate that is provided between the bottom portion of the concave portion in the pump body and a cam ring; first pins that are provided so as to extend from the cam ring to the first side plate; and second pins that are provided so as to extend from the first side plate to the pump body.
-
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。
-
公开(公告)号：US20210348620A1
公开(公告)日：2021-11-11
申请号：US17268926
申请日：2019-10-29
Applicant: KYB Corporation , NIDEC TOSOK CORPORATION
Inventor： Kohei KUBO , Tomoyuki FUJITA , Koichiro AKATSUKA , Yoshiyuki MAKI , Koji HIGUCHI , Yutaka HASHIMOTO
IPC: F04D29/043 , F04D13/06
Abstract: An electric pump provided with a pump unit configured to discharge working oil by being rotationally driven by an electric motor includes: a drive shaft configured to transmit rotational driving force from the electric motor to a rotor of the pump unit; a rotation-detection shaft provided coaxially with the drive shaft, the rotation-detection shaft being configured to be rotated together with the rotor; and a rotation detector unit configured to detect rotation of the rotation-detection shaft. The rotation-detection shaft has: an engagement portion configured to engage with the rotor; and a detection-target portion facing the rotation detector unit, and an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion.
-
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.
-
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。
-
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.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.072 seconds)
