公开(公告)号：JP2001136711A

公开(公告)日：2001-05-18

申请号：JP31665899

申请日：1999-11-08

Applicant: DENSO CORP

Inventor： KIYOSE KENZO ,  EBIHARA YOSHIO

IPC: H02K13/00

Abstract: PROBLEM TO BE SOLVED: To provide a commutator and a manufacturing method therefor for supporting respective segments, using a simple structure. SOLUTION: This commutator 50 has eight segments formed at equal angular intervals and a stationary part 61 fixing the respective segments. The respective segments are isolated electrically from each other by a radial groove 71. Each segment has a contact member 51 and a terminal member 56. The contact member 51 is formed of carbon. The side of the contact member 51 opposed to the terminal member 56 is formed in a stepped shape, to form a first step 52, and a second step 53 from the center thereof. The terminal member 56 forms a through-hole 58 whiches pass through in the board thickness direction. The stationary part 61 formed of thermosetting resin is filled in the through-hole 58 and a clearance 200 formed between the contact member 51 and the terminal member 56, and covers an inner peripheral side surface 54 and an outer peripheral side surface 55.

公开(公告)号：JPH11280584A

公开(公告)日：1999-10-12

申请号：JP8601098

申请日：1998-03-31

Applicant: Denso Corp ,  株式会社デンソー

Inventor： NARUSEKO HIDEKI ,  EBIHARA YOSHIO

IPC: B60K15/01 ,  F02M37/20

Abstract: PROBLEM TO BE SOLVED: To prevent irregular rotation of an engine on an operation by providing two fuel tanks connected in series, and a reflux passage for gaseous component in a fuel passage formed between a fuel pump and a fuel tank, and exhibiting strong suction force by a fuel pump of two steps.
SOLUTION: In a fuel passage of a marine engine, fuel pumps 1, 2 are connected to an engine main body in series, an intake port 3 of the fuel pump 1 is connected to a fuel tank by a fuel pipe, and a delivery port 4 of the fuel pump 2 is connected to a fuel injection valve through a pressure regulator and the like. Namely, a hollow separator 6 is screwed around a delivery port 5 of the fuel pump 1, and a right end opening of the separator 6 is closed by a cover having a short pipe shaped nipple. One end of a connecting pipe 15 is connected to the nipple of the separator 6 through a rubber pipe 16 and the like, and the other end of the connecting pipe 15 is connected to the intake port 18 of the fuel pump 2 through a rubber pipe 17 and the like.
COPYRIGHT: (C)1999,JPO

Abstract translation: 要解决的问题：通过设置串联连接的两个燃料箱和用于在燃料泵和燃料箱之间形成的燃料通道中的气体成分的回流通道，防止发动机在操作中的不正常旋转，并且具有强的吸力 通过两步的燃油泵。 解决方案：在船用发动机的燃料通道中，燃油泵1,2与发动机主体串联连接，燃油泵1的进气口3通过燃油管与燃油箱连接， 燃料泵2的4通过压力调节器等连接到燃料喷射阀。 也就是说，中空隔板6被拧在燃料泵1的输送口5周围，隔板6的右端开口由具有短管状接头的盖封闭。 连接管15的一端通过橡胶管16等与分离器6的接头连接，连接管15的另一端通过橡胶管连接到燃料泵2的进气口18 17等。

公开(公告)号：JPH11117821A

公开(公告)日：1999-04-27

申请号：JP28034597

申请日：1997-10-14

Applicant: DENSO CORP

Inventor： HAYASHI NORIHIRO ,  EBIHARA YOSHIO

IPC: F02M37/18 ,  F02M37/00

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized fuel feed system that keeps the pressure in its fuel feed line to a preset pressure even while an engine is stopped for a quick engine restart. SOLUTION: An anti-decompression valve 6 is adapted to close while the fuel pressure in a fuel feed line 11 falls within the range from 80% including to 100% excluding of the minimum system fuel pressure during a stoppage of an engine 3 to thus hold this fuel pressure in the feed line 11 during a stoppage of the engine 3 within this 80-100% range of the minimum system fuel pressure. This control permits an immediate restart of the engine 3. The nozzle bore of a jet pump 20 is set to 0.6 mm, and the pressure loss is adjusted to hold the branch flow rate into the jet pump 20 within 25 l/h. This regulation supplies the engine 3 with a quantity of fuel required on the engine side with no increase in discharge of a fuel pump 2 to whereby hold the fuel pump 2 small-sized.

公开(公告)号：JP2007270681A

公开(公告)日：2007-10-18

申请号：JP2006095335

申请日：2006-03-30

Applicant: Denso Corp ,  株式会社デンソー

Inventor： NARUSEKO HIDEKI ,  HAZAMA SHINJI ,  OI KIYOTOSHI ,  EBIHARA YOSHIO

IPC: F04D5/00 ,  F02M37/08 ,  F04D29/22

CPC classification number: F04D29/188

Abstract: PROBLEM TO BE SOLVED: To provide an impeller for a fuel pump capable of reducing the sound pressure peak of noise and suppressing the lowering of a pump efficiency, and a fuel pump using the impeller. SOLUTION: The circumferential widths of vane grooves 36 formed in the peripheral edge part of the impeller 30 in the rotating direction are not uniform. The vane grooves 36 adjacent to each other in the rotating direction are partitioned by a vane plate 34. When the impeller 30 is rotated, a fuel flowing out from the radial outer side of the forward vane grooves 36 in the rotating direction flows into the backward vane grooves 36 in the rotating direction. By repeating the outflow and inflow of the fuel between the vane grooves 36 a large number of times, the fuel is boosted in the form of a swirl flow. In the vane plates 34 adjacent to each other in the rotating direction, where an adjacent angle formed by straight lines 104 connecting the radial outer end 34b as the forward end of the vane plate 34 in the rotating direction to a rotating shaft 100 is θ, a dispersion value (θ max -θ min ) as a difference between the maximum value θ max and the minimum value θ min of the adjacent angle θ is set to 2.5°≤ dispersion width ≤4°. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够降低噪声的声压峰值并抑制泵效率降低的燃料泵的叶轮和使用叶轮的燃料泵。 解决方案：形成在叶轮30的旋转方向的周缘部的叶片槽36的周向宽度不均匀。 沿旋转方向相邻的叶片槽36由叶片板34隔开。当叶轮30旋转时，从前叶片槽36的旋转方向的径向外侧流出的燃料流入向后 叶片槽36沿旋转方向。 通过重复在叶片槽36之间的燃料的流出和流入多次，燃料以涡流的形式被增压。 在沿着旋转方向相邻的叶片板34中，在将作为叶片板34的前端的径向外端34b沿旋转方向连接到旋转轴100的直线104形成的相邻角度为θ的情况下， 作为最大值θ最小值与最小值θ min之间的差的色散值（θ max -θ min ） / SB>相邻角度θ设定为2.5°≤分散宽度≤4°。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2003097375A

公开(公告)日：2003-04-03

申请号：JP2001287912

申请日：2001-09-20

Applicant: DENSO CORP ,  KYOSAN DENKI KK

Inventor： EBIHARA YOSHIO ,  SAKAI TATSUO ,  KAWASAKI HIROAKI ,  NOYA TAMOTSU ,  KIMURA AKIHIRO

IPC: F02M37/10

Abstract: PROBLEM TO BE SOLVED: To solve problems that the number of part items is increased, the height of a connector part is increased, and the total height of a pump is also increased in an in-tank type motor drive fuel pump for vehicles because a male connector is provided on both a flange member fixed to a tank and a fuel pump body suspended therefrom, and the flange member is connected to the fuel pump body via a harness having female connectors on both ends. SOLUTION: The fuel pump body 1 is suspended and supported by the lower part of the flange member 10 fixed to the upper wall 18 of the fuel tank, and a female pump connector 2 is provided on the fuel pump body 1. When fitting the fuel pump body 1 to the flange member 10, a male terminal member 19 protruded from a lower connector 21 provided on the flange member 10 is inserted in the female pump connector 2 to connect these members in a directly conductive manner. This female connector 3 is extended to form an end part as a brush supporting part 4, and the brush is pressed against a commutator by the elastic force of a plate.

公开(公告)号：JP2002354760A

公开(公告)日：2002-12-06

申请号：JP2001161093

申请日：2001-05-29

Applicant: DENSO CORP

Inventor： EBIHARA YOSHIO

IPC: F02M37/10 ,  H01R39/06 ,  H01R39/14 ,  H02K5/14 ,  H02K13/00

Abstract: PROBLEM TO BE SOLVED: To provide a motor portion 30 (electric motor) capable of preventing a carbon-made contacting member 60 of a commutator 50 from colliding with a brush holder 80 and thereby damaging the contact member 60. SOLUTION: A protrusion 82 is provided, at a brush holder 80, protruding in opposite to an end surface 33a of a resin 33 of an armature 32, and the axial position of an end surface 82a of this protrusion 82 in opposite to the end surface 33a of the resin 33 of the armature 32 is so arranged that, when the armature 32 shifts, by an outside force, in the axial direction of the brush holder 80 causing the end surface 33a to be placed in contact with the end surface 82a, there will be a clearance C formed between the contacting member 60 and the brush holder 80 in opposite thereto. This restrains the contracting member 60 of the commutator 50 from colliding with the brush holder 80, even if an impact load is applied to a fuel pump 10 causing the armature 32 to shift in the axial direction of the brush holder 80, thereby securely preventing damage to the carbon-made contact member 60 of the commutator 50.

公开(公告)号：JP2001298912A

公开(公告)日：2001-10-26

申请号：JP2000112518

申请日：2000-04-13

Applicant: DENSO CORP

Inventor： KIYOSE KENZO ,  OI KIYOTOSHI ,  EBIHARA YOSHIO

IPC: H01R39/04 ,  H02K13/00

Abstract: PROBLEM TO BE SOLVED: To improve damage preventing property of a commutator segment in a disk type commutator of an anti-commutation surface bonding structure while complexity to structure and manufacturing process is restrained. SOLUTION: A plurality of metal segments 2 are bonded individually to anti-commutation surfaces of a plurality of commutator segments 1 which have an almost discoidal commutation surface as a whole. Windings are fusion-bonded to terminals 24 of the metal segments 2. Outside parts of the commutator segments 1 are covered with the metal segment 2 interposing small gaps (d). As a result, protection of the commutator segments 1 is improved as compared with the conventional disk type commutator of an anti-commutation surface bonding system.

公开(公告)号：JP2000023425A

公开(公告)日：2000-01-21

申请号：JP18434798

申请日：1998-06-30

Applicant: DENSO CORP

Inventor： EBIHARA YOSHIO ,  KIYOSE KENZO

IPC: H01R39/06 ,  H02K13/00

Abstract: PROBLEM TO BE SOLVED: To provide a carbon structure which enables a firm junction between a carbon main part and a metal part and its manufacturing method. SOLUTION: A commutator 50 has 8 segments 60 formed with equiangular spacings and a fixing part 56 to which the segments 60 are fixed. The sliding member 51 of each segment 60 on which a brush slides is made of carbon and the metal layer 52 of each segment 60 is made of iron or iron system alloy. A carbon structure consisting of the sliding part 51 and the metal layer 52 are produced by molding a carbon/metal molding unit consisting of a carbon molding unit made of carbon powder and a metal molding unit made of iron powder or iron system alloy powder integrally to form the diffusion junction of the sliding member 51 and the metal layer 52. A terminal member 54 is soldered to the metal layer 52 with joint material such as solder, etc.

公开(公告)号：JPH1150990A

公开(公告)日：1999-02-23

申请号：JP21177597

申请日：1997-08-06

Applicant: DENSO CORP

Inventor： EBIHARA YOSHIO

IPC: F25D17/06 ,  F02M37/08 ,  F04D5/00 ,  F04D29/18 ,  F04D29/66 ,  F25D19/00 ,  F25D19/02

Abstract: PROBLEM TO BE SOLVED: To reduce the peak of sound pressure to be generated with the rotation of a rotational member. SOLUTION: Adjacent angles of blade grooves 24b to be used for a fuel pump are all different from one another. When the total number of blade grooves is taken as (n), the total Sn of the adjacent angles of the continuos adjacent m=n/k (K=2, 3 or 4 and [n/k]+1 of n/k or [n/k]+1 is taken as (m) when n/k is not an integer) blade grooves 24b is determined, the total Sn is determined (n) times while deviating the blade grooves 24b one by one in the circumferential direction from a blade groove 24b, and the total Sa of each time satisfies the expression (360/k)-10

公开(公告)号：JP2005220817A

公开(公告)日：2005-08-18

申请号：JP2004029707

申请日：2004-02-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： NAKATO YUJI ,  EBIHARA YOSHIO ,  HAZAMA SHINJI

IPC: F02M37/10 ,  F04C2/10 ,  F04C29/00

CPC classification number: F05C2225/04

Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump in which improvement in corrosion resistance can be attained even though off-quality fuel is used.
SOLUTION: The fuel pump 10 comprises an inner rotor 23 having an external-teeth part on the outside periphery, and an outer rotor 24 having an internal-teeth part on the inside periphery and forming a plurality of pumping chambers between the inner rotor 23 and the outer rotor 24, and casings 21, 22 for holding the inner rotor 23 and the outer rotor 24. Fuel in a fuel tank is sucked by rotating the inner rotor 23 to be delivered into an internal combustion engine. The inner rotor 23 and the outer rotor 24 are respectively covered with films 23a, 24a having resistance to off-quality fuel.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供即使使用不合格的燃料也能够获得耐腐蚀性的改善的燃料泵。 解决方案：燃料泵10包括在外周上具有外齿部分的内转子23和在内周上具有内齿部分的外转子24，并在内转子24之间形成多个泵室 转子23和外转子24以及用于保持内转子23和外转子24的壳体21,22。燃料箱中的燃料通过旋转内转子23被吸入以被输送到内燃机中。 内转子23和外转子24分别被具有耐劣质燃料的膜23a，24a覆盖。 版权所有（C）2005，JPO＆NCIPI