公开(公告)号：JP2011122564A

公开(公告)日：2011-06-23

申请号：JP2009283059

申请日：2009-12-14

Applicant: Denso Corp ,  株式会社デンソー

Inventor： FUKUOKA SHINGO ,  ITO MOTOYA

IPC: F02M37/10 ,  F02M37/08 ,  H02K5/22

Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump capable of inhibiting temporal changes in the flow rate of a fuel supplied near the terminal. SOLUTION: A fuel pump 100 is mounted in a fuel tank for storing a fuel to pump up the fuel, the fuel pump having a pump portion 80 for increasing the pressure of the fuel, an electric motor 70 for providing rotational power to the pump portion 80, and an electric power receiving connector portion 57 temporal of a resin material, wherein there are provided a housing 20 which houses the pump portion 80 and the electric motor 70 therein and inside which the fuel is delivered, the housing 20 comprising a through hole 53 penetrating the housing 20 in the electric power receiving connector portion 57, and a terminal 60 which is formed of a metal material, is electrically connected to the electric motor 70 inside the housing 20, is fitted with the through hole 53 in the electric power receiving socket portion 57, and has a communication groove 63 projecting outside of the housing 20 to communicate the inside and outside of the housing 20. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供能够抑制在端子附近供应的燃料的流量的时间变化的燃料泵。 解决方案：燃料泵100安装在燃料箱中，用于存储用于泵送燃料的燃料，燃料泵具有用于增加燃料压力的泵部分80，用于提供旋转动力的电动机70 泵部分80和电力接收连接器部分57，其中设置有壳体20，壳体20将泵部分80和电动机70容纳在其内部并且输送燃料，壳体20包括 穿过电力接收连接器部分57中的壳体20的通孔53和由金属材料形成的端子60电连接到壳体20内部的电动机70，与通孔53配合在一起 电源接收插座部分57，并且具有突出于壳体20外部的连通槽63，以便连通壳体20的内部和外部。版权所有：（C）2011，JPO＆INPIT

公开(公告)号：JP2008215202A

公开(公告)日：2008-09-18

申请号：JP2007053934

申请日：2007-03-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： FUKUOKA SHINGO ,  TAKAGI MASATOSHI ,  ITO MOTOYA

IPC: F02M37/10

Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump having simple construction, which reduces electrochemical corrosion of terminals, with the postures and positions of functional components made adjustable without increasing the body size.
SOLUTION: A terminal subassembly 50 has a hole portion 54 and a hole portion 56 into which a spring for pushing a brush and a tool for adjusting the attitude and position of a pump portion, are inserted. The hole portion 54 and the hole portion 56 are blocked with a protruded portion 81 or a block portion 82 provided on an end cover 40. As a result, a current passage is shut off, or the area of the current passage is reduced between the terminals 51 on the positive and negative pole sides. Thus, even when using fuel containing a highly conductive material such as alcohol, the electrochemical corrosion of the terminals 51 is reduced. The hole portion 54 and the hole portion 56 are blocked with the protruded portion 81 or the block portion 82 to avoid an increase of the body size without the need for securing a great distance between the terminals 51.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供具有简单结构的燃料泵，其减少端子的电化学腐蚀，其中功能部件的姿势和位置可调节而不增加机身尺寸。 解决方案：端子子组件50具有孔部分54和孔部分56，插入用于推动刷子的弹簧和用于调节泵部分的姿态和位置的工具。 孔部54和孔部56被设置在端盖40上的突出部81或块部82阻挡。结果，电流通路被切断，或者电流通路的区域在 端子51在正极和负极两侧。 因此，即使当使用含有高导电性材料如醇的燃料时，也会降低端子51的电化学腐蚀。 孔部分54和孔部分56被突出部分81或块部分82阻挡，以避免体积尺寸的增加，而不需要在端子51之间确保很大的距离。（COPYRIGHT）：（C） 2008年，日本特许厅和INPIT

公开(公告)号：JP2005204386A

公开(公告)日：2005-07-28

申请号：JP2004006965

申请日：2004-01-14

Applicant: Denso Corp ,  株式会社デンソー

Inventor： YAMASHITA KEIICHI ,  ITO MOTOYA

IPC: F02M37/10 ,  F04D5/00 ,  F04D29/00 ,  H02K1/14 ,  H02K1/24 ,  H02K7/14 ,  H02K13/04 ,  H02K23/04

CPC classification number: H02K13/04 ,  H02K1/148 ,  H02K1/24

Abstract: PROBLEM TO BE SOLVED: To provide a motor which reduces the number of assembling steps of a rotor, and to provide a fuel pump using the same.
SOLUTION: A cover structure 80 has a disk-like cover 82 and a terminal 88. The cover structure 80 is formed by applying tin-plating to a brass and formed in one member of a metal. A through hole 84 for inserting a shaft 42 is formed at the center of the cover 82. A gap for electrically insulating the cover structure 80 and the shaft 42 is formed between the cover 82 for forming the through hole 84 and the outer peripheral surface of the shaft 42. The terminals 88 are projected in an axial direction from the cover 82 side toward an armature 50 side, and six terminals 88 are formed in the circumferential direction of the cover 82. The six terminals 88 are electrically connected by the cover 82. The cover structure 80 is assembled with the armature 50, and the ends of the coil 62 to the cover structure 80 side are electrically connected by engaging the terminals 88 with the terminal 66 of the armature 50.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供减少转子的组装步骤数量的电动机，并提供使用该电动机的燃料泵。 解决方案：盖结构80具有盘状盖82和端子88.盖结构80通过将镀锡施加到黄铜上并形成在金属的一个构件中而形成。 用于插入轴42的通孔84形成在盖82的中心。用于电绝缘盖结构80和轴42的间隙形成在用于形成通孔84的盖82和外孔表面 端子88从盖82侧朝向电枢50侧沿轴向突出，并且在盖82的圆周方向上形成六个端子88.六个端子88通过盖82电连接 盖结构80与电枢50组装在一起，并且通过使端子88与衔铁50的端子66相接合而将线圈62的端部连接至盖结构80侧。（C） 2005年，JPO＆NCIPI

公开(公告)号：JP2003042092A

公开(公告)日：2003-02-13

申请号：JP2001232747

申请日：2001-07-31

Applicant: Denso Corp ,  株式会社デンソー

Inventor： IWANARI EIJI ,  ITO MOTOYA

IPC: F02M37/08 ,  F04D5/00 ,  F04D29/04 ,  F04D29/043

Abstract: PROBLEM TO BE SOLVED: To solve a problem that it is difficult to completely discharge fuel stagnating in a clearance between a hollow pipe and a fixed shaft by using pressure difference of fuel generated in a motor.
SOLUTION: A discharging hole is provided on the hollow pipe 25 and fuel intruding in the clearance 28 is easily and surely discharged to the outside of the clearance 28. The hollow pipe 25 is formed by rolling metal flat plate into a pipe shape, and a bearing 26 is inserted on outsides of both ends of the hollow pipe 25. The discharging hole is concurrently formed in pressing for cutting out flat plate from strip. Post-processing (deburring) causing great cost increase is not required and the hollow pipe 25 including the discharging hole can be manufactured at a low cost by forming the discharging hole on the flat plate before rolling.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：为了解决通过使用在电动机中产生的燃料的压力差来难以完全排出滞留在中空管和固定轴之间的间隙的燃料的问题。 解决方案：在中空管25上设有一个排放孔，并且能够容易且可靠地排出到间隙28内的燃料排出到间隙28的外部。中空管25通过将金属平板轧制成管状而形成， 轴承26插入中空管25的两端的外侧。排出孔同时形成为用于从带切出平板的按压。 不需要引起成本增加的后处理（去毛刺），并且通过在轧制之前在平板上形成排出孔，能够以低成本制造包括排出孔的中空管25。

公开(公告)号：JP2002354733A

公开(公告)日：2002-12-06

申请号：JP2001232461

申请日：2001-07-31

Applicant: DENSO CORP

Inventor： MOROTO KIYONORI ,  ITO MOTOYA ,  IWANARI EIJI

IPC: H02K1/24 ,  H02K1/28 ,  H02K3/18 ,  H02K3/52 ,  H02K13/04 ,  H02K23/26 ,  H02K23/30

Abstract: PROBLEM TO BE SOLVED: To provide a direct-current motor which allows increase in space factor of an armature coil 7 and easy change in connection between the armature coils 7. SOLUTION: An armature core 6 is provided in such a manner as to be split into an inside core 6A and an outside core, which are combined together by press-in an fitting after a bobbin 9, around which the armature coil 7 is wound, is assembled to the inside core 6A. The armature coil 7 is wound around the bobbin 9, and both coil ends are connected to male terminals 10 provided in the bobbin 9. A commutator is provided with a female terminal into which the male terminal 10 of the bobbin 9 is fitted, and each of the female terminals undergoes internal connection so as to be brought into conduction with a prescribed segment. Such a constitution enables the connection between the armature coils 7 by only making the male terminal 10 fitted into the female terminal. Consequently, provision of the commutators different in the internal connection allows easy change of the connection between the armature coils 7 only by replacing the commutator.

公开(公告)号：JP2002281723A

公开(公告)日：2002-09-27

申请号：JP2001078887

申请日：2001-03-19

Applicant: DENSO CORP

Inventor： MOROTO KIYONORI ,  ITO MOTOYA

IPC: H02K3/28 ,  H02K13/10 ,  H02K23/08 ,  H02K23/36 ,  H02P7/29

Abstract: PROBLEM TO BE SOLVED: To extend the service life of a motor by reducing rectified voltage for restraining arc discharge generation, or, to reduce electromagnetic noise. SOLUTION: Six coils 7 are connected to each segment 8a in which one end thereof constitutes a rectifier 8, and the other end of each coil is connected to neutral positions n1 and n2. In two pairs of brushes 4, a plus-side brush 4 of one pair is short-circuited with a minus-side brush 4 of the other pair. This makes it possible for a primary coil group and a secondary coil group to be energized in series with each other through the two pairs of brushes 4. With this constitution, the voltage at one phase of coils 7 is decreased by a half of that in a conventional type, which also reduces the voltage when rectified in a half. This would mean that even if the power voltage doubles, the voltage when rectified would not increase more than that in a conventional type. As a result, arc discharge generated between the brushes 4 and the rectifiers 8 when rectified can be restrained, so that wear to the brushes 4 and the rectifiers 8 can be reduced. It is thus possible to extend the service life of the motor.

公开(公告)号：JP2001107818A

公开(公告)日：2001-04-17

申请号：JP26973299

申请日：1999-09-24

Applicant: DENSO CORP

Inventor： KOBAYASHI ATSUSHIGE ,  ITO MOTOYA

IPC: F02M37/08 ,  F02M37/00 ,  F02M55/02

Abstract: PROBLEM TO BE SOLVED: To effectively reduce the generation of noise during operation of a pump and to satisfy both a demand for reduction of the generation of noise and a demand for saving of energy. SOLUTION: A pump chamber 13 and a pressure accumulating chamber 14 are coaxially formed in a body housing 11. By driving the plunger 15 of the pump chamber 13 in a left direction (a fuel suction direction) by a motor 19, fuel is sucked in the pump chamber 13. By driving rightward the plunger 15 for a pump through a coil spring 16 for discharge, fuel in the pump chamber 13 is discharged in the pressure accumulating chamber 14. By energizing the plunger 17 of the pressure accumulation chamber 14 in a right direction (a fuel pressurizing direction) through a spring 18 for pressure accumulation, fuel in the pressure accumulating chamber 14 is discharged in a fuel pressure regulating valve 37 as the fuel is pressurized. Fuel discharged in a fuel pressure regulating valve 37 is regulated to a specified fuel pressure and discharged to a fuel injection valve through a fuel discharge pipe 38.

公开(公告)号：JPH11345667A

公开(公告)日：1999-12-14

申请号：JP31458398

申请日：1998-11-05

Applicant: DENSO CORP

Inventor： ITO MOTOYA ,  KIYOSE KENZO ,  EBIHARA YOSHIO ,  YAMASHITA KEIICHI

IPC: H01R39/06 ,  H02K13/00

Abstract: PROBLEM TO BE SOLVED: To secure electrical insulation between segments each other and to achieve a long life. SOLUTION: A commutator 50 has eight segments formed at equal angle intervals and a fixing part 56 of resin to fix the eight segments. Each segment has a contact member 51 and a terminal member 53 of carbon, and is electrically insulated each other by a radial groove 61. The contact member 51 and the terminal member 53 are electrically connected by a connecting material 57 such as solder at a protuberance part 52. Since a distance between a position where a nail 55 formed on the terminal member 53 and an armature coil are electrically connected by fusing and the connecting material 5 can be parted, the connecting part 57 can be prevented from reaching a fusing temperature even if the terminal member 53 is heated by heat produced when fusing. Accordingly, the segments are prevented from getting conductive by the connecting agent 57 fusing and flowing in the groove 61.

公开(公告)号：JPH11343983A

公开(公告)日：1999-12-14

申请号：JP14991098

申请日：1998-05-29

Applicant: DENSO CORP

Inventor： ITO MOTOYA

IPC: F04C2/10

Abstract: PROBLEM TO BE SOLVED: To provide a motor-driven pump of a small structure such that inside its rotor is used as the pump part, whereby the power consumption is reduced and the supporting part of the rotor is prevented from seizure. SOLUTION: Cylindrical rotors 4 provided at one end with cylindrical recesses 5a are arranged at a certain spacing on the inside of a cylindrical stator 10 and supported rotatably about the axis by a shaft 12, and a pump part 3 is formed inside the recesses 5a. Because the rotors 4 rotate being supported by the shaft 12 on the internal circumferential side having a low peripheral linear speed, the supporting slide part is unlikely to make seizure. As the rotor 4 is of inner rotor type rotating inside the stator 10, the fluid sucked from the pump part 3 contacts only with the peripheral surface of the rotor 4, and therefore, the fluid resistance at rotating of the rotor 4 can be suppressed and the power consumption be reduced.

公开(公告)号：JPH11270468A

公开(公告)日：1999-10-05

申请号：JP7184098

申请日：1998-03-20

Applicant: DENSO CORP

Inventor： ITO MOTOYA

IPC: F04C2/10 ,  F04B53/00

Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump capable of securing a specified discharge quantity without increasing the power consumption, in which the man-hours for winding a coil are reduced. SOLUTION: The pump part 20 of a fuel pump device is of displacement type and inner gear type. The motor part 30 is of brushless motor of outer rotor type. Because of outer winding of coil, an outer rotor type motor requires lesser man-hours for winding the coil, compared with an inner rotor type motor formed by inner winding process. Even if the revolving speed is set below 6000 rpm, the pump part 20 of displacement type can discharge the fuel in equal quantity to a non-displacement type pump using impeller, etc. The inner gear type pump can reduce the sliding resistance of the pump part 20. The revolving speed of the pump part 20 is set to a proper value below 6000 rpm, and thereby the power supplied to the motor part 30 is reduced, which should enhance the rate of fuel consumption.