公开(公告)号：US20170292481A1

公开(公告)日：2017-10-12

申请号：US15512935

申请日：2015-09-08

Applicant: DENSO CORPORATION ,  KYOSAN DENKI CO., LTD.

Inventor： Shingo FUKUOKA ,  Hideto TAKAHASHI ,  Hiromi SAKAI ,  Minoru EDURA

IPC: F02M37/00 ,  F02M37/08 ,  F16K17/04

Abstract: A valve element includes: a loosely insertable wall portion that is loosely inserted in an inside of a connecting portion on a downstream side of a valve seat; a fittable tubular portion that is fitted to the inside of the connecting portion on a downstream side of the loosely insertable wall portion; and a projecting annular portion-that projects from the fittable tubular portion toward a radially inner side of the fittable tubular portion. An outlet portion projects into the fittable tubular portion. A valve spring is located on a radially outer side of the outlet portion and on the radially inner side of the fittable tubular portion to urge the valve element toward the valve seat.

公开(公告)号：US20160369810A1

公开(公告)日：2016-12-22

申请号：US15184136

申请日：2016-06-16

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Yuuji HIDAKA ,  Masaya OOTAKE

IPC: F04D29/06 ,  F04D3/00 ,  F02M37/08 ,  F04D29/18 ,  F04D29/52 ,  F04D13/06 ,  F04D29/043

CPC classification number: F02M37/08 ,  F04D5/002 ,  F04D13/06 ,  F04D29/026 ,  F04D29/043 ,  F04D29/20 ,  F05D2230/10 ,  F05D2300/516

Abstract: A fuel pump includes a shaft integrally rotatable with a rotor, and an impeller including a fitting hole to which the shaft is fitted. The shaft includes shaft contact surfaces which contact flat surfaces that form the fitting hole when the shaft rotates. The shaft contact surfaces include grooves formed to extend in a center axis direction of the shaft.

Abstract translation: 燃料泵包括与转子一体旋转的轴和包括安装有轴的装配孔的叶轮。 轴包括轴接触表面，当轴旋转时，该接触表面接触形成配合孔的平坦表面。 轴接触表面包括形成为在轴的中心轴线方向上延伸的槽。

公开(公告)号：US20160305426A1

公开(公告)日：2016-10-20

申请号：US15096665

申请日：2016-04-12

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Daiji FURUHASHI

IPC: F04C2/10 ,  F04C15/00 ,  F02M59/12 ,  F04C2/08

CPC classification number: F04C2/102 ,  F02M59/12 ,  F04C2/084 ,  F04C11/008 ,  F04C15/0061 ,  F04C15/0076 ,  F04C15/008 ,  F04C2210/1044 ,  F04C2210/203 ,  F04C2240/30

Abstract: An inner gear includes an insertion hole, which extends through the inner gear in an axial direction, and a first balance groove, which is axially recessed at an axial end portion of the inner gear and is communicated with the insertion hole. First and second chamfered portions are formed in an inner peripheral edge of the inner gear, which is adjacent to the insertion hole. A joint member has a leg inserted into the insertion hole. An inserting direction of the leg into the insertion hole is defined as a first direction, and a direction, which is opposite from the first direction, is defined as a second direction. In a view taken in a direction perpendicular to the axial direction, at least a part of a first direction side end portion of the leg is axially placed between a first chamfered end plane and a first groove end plane.

Abstract translation: 内齿轮包括沿轴向延伸穿过内齿轮的插入孔和在内齿轮的轴向端部轴向凹入并与插入孔连通的第一平衡槽。 第一和第二倒角部分形成在与插入孔相邻的内齿轮的内周边缘中。 接合构件具有插入到插入孔中的腿。 将脚插入插入孔的方向被定义为第一方向，并且将与第一方向相反的方向定义为第二方向。 沿着与轴向垂直的方向观察，腿的第一方向侧端部的至少一部分轴向地设置在第一倒角端面与第一槽端面之间。

公开(公告)号：US20130323024A1

公开(公告)日：2013-12-05

申请号：US13905680

申请日：2013-05-30

Applicant: DENSO CORPORATION

Inventor： Yuuichirou OOTA ,  Hiromi SAKAI

IPC: F04D1/00

CPC classification number: F04D1/00 ,  F04D5/002 ,  F04D13/0653 ,  F04D13/0693 ,  F04D15/0005

Abstract: A fuel pump includes a pump cover on one side of a housing, a cover end portion on the other side of the housing, a stator inside the housing, a rotor inside the stator, a shaft rotatable with the rotor, an impeller rotatable with the shaft to pressurize fuel inside the housing, a bearing portion provided in the cover end portion on its center axis to slidably support an end part of the shaft, and a relief valve capable of reducing a fuel pressure inside the housing. The cover end portion has an end surface located on its side opposite from the pump cover, and the relief valve includes a valve seat located on an opposite side of the end surface of the cover end portion from the pump cover.

Abstract translation: 燃料泵包括在壳体的一侧上的泵盖，壳体另一侧上的盖端部，壳体内的定子，定子内部的转子，可与转子一起旋转的轴，可转动的叶轮， 轴对所述壳体内的燃料加压，设置在所述盖端部的中心轴线上的轴承部，以可滑动地支撑所述轴的端部，以及能够减小所述壳体内的燃料压力的安全阀。 盖端部具有位于其与泵盖相对的一侧的端面，并且安全阀包括位于盖端部与泵盖的端面相反侧的阀座。

公开(公告)号：US20180363607A1

公开(公告)日：2018-12-20

申请号：US16061070

申请日：2016-11-25

Applicant: DENSO CORPORATION

Inventor： Tetsuo HAYAKAWA ,  Hiromi SAKAI ,  Daiji FURUHASHI

IPC: F02M37/02 ,  F02M37/22 ,  F02M37/10 ,  B01D35/027

Abstract: A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.

公开(公告)号：US20180306148A1

公开(公告)日：2018-10-25

申请号：US15768592

申请日：2016-10-28

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Daiji FURUHASHI

IPC: F02M37/10 ,  F04C15/06 ,  F04C2/10

Abstract: The pump housing includes a pair of sliding surfaces clamping the outer and inner gears from both their sides to allow both the gears to slide on the sliding surfaces, a suction port part suctioning fuel from outside into inside of the gear accommodation chamber, and a discharge port part discharging fuel from inside into outside of the gear accommodation chamber. At least one of the suction port part and the discharge port part includes an elongated groove that is depressed from the corresponding sliding surface and extends along a circumferential direction of the pump housing in a region opposed to the pump chambers, opening bores that open on the elongated groove from outside of the gear accommodation chamber, and ribs each of which is arranged between the corresponding adjacent two opening bores. The opening bores and the ribs are arranged alternately along an extending direction of the elongated groove.

公开(公告)号：US20180038326A1

公开(公告)日：2018-02-08

申请号：US15551661

申请日：2016-03-24

Applicant: DENSO CORPORATION

Inventor： Daiji FURUHASHI ,  Hiromi SAKAI

IPC: F02M37/08 ,  F04C15/00 ,  F04C2/10

CPC classification number: F02M37/08 ,  F04C2/10 ,  F04C2/102 ,  F04C14/10 ,  F04C15/00 ,  F04C15/0065 ,  F04C15/0076 ,  F04C2210/203 ,  F04C2270/16

Abstract: A fuel pump includes: an outer gear; an inner gear that is meshed with the outer gear and includes a receiving hole; a rotatable shaft; a contact portion that is formed to be contactable with the receiving hole; and a pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction. At least one of the receiving hole and the contact portion includes a tilt surface, which is tilted relative to the axis direction. When the rotatable shaft is rotated to a drive rotation side, the receiving hole contacts the contact portion through the tilt surface, so that the receiving hole is urged in a circumferential direction and is also urged toward the first housing component in the axial direction.

公开(公告)号：US20180010607A1

公开(公告)日：2018-01-11

申请号：US15544345

申请日：2016-01-15

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Daiji FURUHASHI

IPC: F04C15/06 ,  F04C2/10 ,  B23C3/34 ,  F02M37/08

CPC classification number: F04C15/06 ,  F02M37/08 ,  F04C2/102 ,  F04C15/0049 ,  F04C2230/10 ,  F04C2240/30 ,  F04C2250/10

Abstract: A suction side end part of a suction guide passage and a discharge side end part of a discharge guide passage are opposed to each other with a gap therebetween. At a deviation angle at which contraction of a pump chamber starts, an outer peripheral part of the discharge side end part is formed along an inner tooth, and an inner peripheral part of the discharge side end part is formed along an outer tooth. A working tool that rotates and cuts circularly is moved around on a pump housing in a single continuous line to form an outline of the discharge guide passage, thereby forming the discharge guide passage. The working tool is moved around on the pump housing in a single continuous line to form an outline of the suction guide passage, thereby forming the suction guide passage.

公开(公告)号：US20160201680A1

公开(公告)日：2016-07-14

申请号：US14912544

申请日：2014-09-03

Applicant: DENSO CORPORATION

Inventor： Tetsuo HAYAKAWA ,  Hiromi SAKAI ,  Kiyoshi NAGATA

IPC: F04D13/06 ,  F04D29/52

CPC classification number: F04D13/06 ,  F02M37/10 ,  F02M2037/082 ,  F04D29/528 ,  H02K3/44 ,  H02K5/08 ,  H02K5/12 ,  H02K7/14 ,  H02K15/02

Abstract: A fuel chamber is formed between a pump arrangement and a motor arrangement, and outer flow passages are formed between a stator of the motor arrangement and a housing. Fuel, which is discharged from a discharge port of the pump arrangement, is outputted to an outside of the housing from a fuel discharge conduit that is formed on a side of the motor arrangement, which is opposite from the pump arrangement, after passing through the motor arrangement. At a time of performing electroplating on the stator, electrode contact portions, to which electrodes can contact, is formed in an outer wall of the stator, which forms the outer flow passages.

Abstract translation: 在泵装置和电动机装置之间形成燃料室，并且在电动机装置的定子和壳体之间形成外部流动通道。 从泵装置的排出口排出的燃料从形成在电动机装置的与泵装置相反的一侧的燃料排放管道输出到壳体的外部，在通过 电机安排。 在定子上进行电镀时，电极可接触的电极接触部分形成在定子的外壁上，该外壁形成外流动通道。

公开(公告)号：US20130320788A1

公开(公告)日：2013-12-05

申请号：US13888885

申请日：2013-05-07

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Kiyoshi NAGATA

IPC: H02K11/00 ,  F04B17/03

CPC classification number: H02K11/0094 ,  F04B17/03 ,  F04D5/002 ,  F04D13/06 ,  H02K3/28 ,  H02K3/522 ,  H02K11/20 ,  H02K11/33

Abstract: Relay terminals, which are formed integrally with a W-phase terminal, a V-phase terminal and a U-phase terminal provided radially outside bobbins, connect stator coils and the W-phase terminal, the V-phase terminal and the U-phase terminal. Second connection parts of the relay terminals connected to the coils are provided radially inside the W-phase terminal, the V-phase terminal and the U-phase terminal. Thus distances between the second connection part and the inner wall surface of a housing are increased to maintain insulation between the relay terminals and the housing. Thus the relay terminals are protected from breakage.

Abstract translation: 与W相端子一体形成的继电器端子，径向设置在线轴的V相端子和U相端子，连接定子线圈和W相端子，V相端子和U相 终奌站。 连接到线圈的继电器端子的第二连接部分径向设置在W相端子，V相端子和U相端子的内部。 因此，增加了第二连接部件和壳体的内壁表面之间的距离，以便在继电器端子和壳体之间保持绝缘。 因此，继电器端子不受破坏。