-
公开(公告)号：JP2003042027A
公开(公告)日：2003-02-13
申请号：JP2001230938
申请日：2001-07-31
Applicant: Denso Corp , 株式会社デンソー
Inventor： ITO MOTOYA , IWANARI EIJI
Abstract: PROBLEM TO BE SOLVED: To simplify the construction of a fuel pump.
SOLUTION: A cylindrical housing 12 for the fuel pump 11 is constructed by pressing an inside housing 16 into the inner periphery of an outside housing 15, and an engagement protrusion 17 is formed at one end of the inside housing 16. By applying caulking to the lower end of the outside housing 15 to form a fixed edge 21, the outer periphery of a pump portion 13 is inserted and fixed between a stepped portion 19 on the lower side of the housing 12 and the fixed edge 21. By applying caulking to the upper end of the outside housing 15 to form a fixed edge 20, a bearing holder 29 and the outer periphery of a pump cover 33 are inserted and fixed between a stepped portion 18 on the upper side of the housing 12 and the fixed edge 20 and at the same time a magnet 26 is inserted and fixed between the bearing holder 29 and the engagement protrusion 17. Thus, the magnet 26 is fixed in the state of being positioned in the axial direction by the bearing holder 29 and the engagement protrusion 17.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：简化燃油泵的结构。 解决方案：用于燃料泵11的圆柱形壳体12通过将内壳体16压入外壳体15的内周而构成，并且在内壳体16的一端形成有接合突起17。 外壳15的下端形成固定边缘21，泵部13的外周被插入并固定在壳体12的下侧的阶梯部19和固定边缘21之间。通过将铆接施加到 外壳15的上端形成固定边缘20，轴承座29和泵盖33的外周插入并固定在壳体12的上侧的台阶部分18和固定边缘20之间， 同时将磁体26插入并固定在轴承保持器29和接合突起17之间。因此，磁体26通过轴承座29和接合突起17在轴向定位的状态下被固定。
-
公开(公告)号：JP2002272048A
公开(公告)日：2002-09-20
申请号：JP2001074557
申请日：2001-03-15
Applicant: DENSO CORP
Inventor： MOROTO KIYONORI , ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To provide a bobbin 1 which can prevent irregular winding of an armature coil 5 and thereby can improve winding efficiency, even in the case where the armature coil 5 is wound with the higher area occupancy. SOLUTION: The bobbin 1 has a hollow body 1A, to which an armature coil 5 is wound, and it is then built into an internal core by inserting the tooth of the internal core into the hollow part 1a of the body 1A. Both side surfaces of the body 1A in the circumferential direction is formed in a required smallest thickness t1 to assure the winding area as wide as possible. Meanwhile, the winding space is provided at both end-surfaces of the body 1A in the longitudinal direction, to provide a larger winding space toward the external circumferential side from the internal circumferential side, so that the thickness to the sloping surface from the hollow part 1a becomes larger toward the internal circumferential side from the internal circumferential side. The armature coil 5 is wound to gradually increase the number of winding stages of the coil wire 5a toward the external circumferential side, starting from the internal circumferential side of the body 1A.
-
公开(公告)号：JP2002262483A
公开(公告)日：2002-09-13
申请号：JP2001052200
申请日：2001-02-27
Applicant: DENSO CORP
Inventor： ITO MOTOYA , MOROTO KIYONORI
Abstract: PROBLEM TO BE SOLVED: To provide a direct current electric motor capable of suppressing power consumption in the case that a ring-like magnet 2 can be firmly fixed on a yoke 1 and it is used for a motor-driven fuel pump. SOLUTION: A fixing hole 3 for fixing the magnet 2 is formed on the yoke 1. The fixing hole 3 is penetrated from the inner peripheral face to the outer peripheral face in the direction of the plate thickness of the yoke 1, and an opening diameter opened in the outer peripheral face is set larger than an opening diameter opened in the inner peripheral face. The magnet 2 mixes magnetic powder with a resin, is a plastic magnet molded in the form of a ring, integrally molded with the yoke 1, a part thereof is inserted in the fixing hole 3 of the yoke 1, and has a slip stop structure 4. According the structure, a part of the magnet 2 molded integrally with the yoke 1 is fitted to the fixing hole 3 of the yoke 1, since the outer peripheral side of the fitting part is larger than the inner peripheral side, after molding, even when the magnet 2 is contracted, it is firmly fixed on the yoke 1 without being slipped off from the yoke 1.
-
公开(公告)号：JP2002252938A
公开(公告)日：2002-09-06
申请号：JP2001050058
申请日：2001-02-26
Applicant: DENSO CORP
Inventor： ITO MOTOYA , MOROTO KIYONORI
Abstract: PROBLEM TO BE SOLVED: To provide an armature core which is able to secure a required mechanical strength and reduce leakage of magnetic flux by the magnetic resistance between adjacent 18a made higher. SOLUTION: The armature core is divided into an inner core 18 and an outer core 19. The inner core 18 includes a plurality of teeth 18a radially arranged and links the inner circumferential ends of respective teeth 18a are linked in an annular form. The outer core 19 has a plurality of magnetic poles 19a provided corresponding to respective teeth 18a and a plurality of links 19b which connect the magnetic poles 19a adjoined each other in a circumferential direction. In a core sheet used in the outer core 19, the wall thickness of the links 19b is arranged to be thinner than that of the magnetic poles 19a. With this construction, as the cross sectional area of the links 19b of the outer core 19 can be made smaller, the magnetic resistance of the links 19b becomes larger and the magnetic flux amount leaked between the adjacent teeth 18a via the links 19b can be made smaller.
-
公开(公告)号：JP2002242785A
公开(公告)日：2002-08-28
申请号：JP2001044384
申请日：2001-02-21
Applicant: DENSO CORP
Inventor： ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To improve pump efficiency by reducing the axial size of a fuel pump and decreasing slide resistance for positioning the axial direction of an armature. SOLUTION: The armature 38 of a motor part 33 is supported on a fixed shaft 41 fixed at the central part of a housing 31 and held in a state to bring a brush 51 into contact with a commutator segment 50, situated on the end face on the opposite side to a pump part 32 of the armature 38, through the force of a spring 52. A bearing member 46 interposed between the fixed shaft 41 and the end part on the commutator segment 50 side of the armature 38 is fixed on the armature 38 side, the bearing member 46 is rotatably and axially slidably inserted in the fixed shaft 41. By bringing the end face in the axial direction of the bearing member 46 into contact with the slide surface 53 of a brush holder 43 in a position where the axial center of the armature 38 is offset to the pump part 33 side from the axial center of a magnet 39, positioning in the axial direction of the armature 38 is effected.
-
Patent Agency Ranking
公开(公告)号：JP2001268983A
公开(公告)日：2001-09-28
申请号：JP2000077837
申请日：2000-03-15
Applicant: DENSO CORP
Inventor： ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To obtain a DC brush motor in which the rotational speed of the motor can be varied at low cost through a system generating no electromagnetic wave noise. SOLUTION: In correspondence with commutator segments 29 arranged radially around a rotary shaft 23, conduction brushes 30 and short circuit brushes 31 are arranged alternately at a pitch of 90 deg. around the rotary shaft 23. The conduction brush 30 normally slides on the commutator segment 29 and the short circuit brush 31 moves between a position sliding on the commutator segment 29 and a separated position. When the short circuit brush 31 slides on the commutator segment 29, the DC motor is operated under a state where a part of coils 25 is short-circuited and the number of turns of conduction coil of the entire motor is decreased thus increasing the rotational speed of the motor. When the short circuit brush 31 separates from the commutator segment 29, all coils 25 is conducted. Consequently, the number of turns of conduction coil of the entire motor is increased thus decreasing the rotational speed of the motor.
-
公开(公告)号：JPH11280666A
公开(公告)日：1999-10-15
申请号：JP8074298
申请日：1998-03-27
Applicant: Denso Corp , 株式会社デンソー
Inventor： ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To decrease costs by making a plurality of pump portions with fewer parts.
SOLUTION: An inner gear 27, a circular intermediate gear 28, and a circular outer gear 29 are arranged together eccentrically forming two pump portions 12, 13. When a motor portion simultaneously rotates the three gears 27 through 29, the engagement amount of the trochoid teeth of each of the gears 27 through 29 continuously increases and decreases such that the capacity of each pump chamber 31, 32 formed between each of the gears 27 through 29 repeatedly increases and decreases with one rotation being a cycle. As a result, in the pump chambers 31, 32 in which the capacity is increasing, fuel is transferred while being sucked in from each intake port. The transferred fuel is then discharged from each discharge port in the pump chambers 31, 32 in which the capacity is decreasing. With a pump portion 12 (pump chamber 31) on the inner peripheral side, fuel in the first fuel storage area is transferred to the second fuel storage area. With the pump portion 13 (pump chamber 32) on the outer peripheral-side, fuel in the second fuel storage area is fed to the fuel injection valve side.
COPYRIGHT: (C)1999,JPOAbstract translation: 要解决的问题：通过制造具有较少部件的多个泵部来降低成本。 解决方案：内齿轮27，圆形中间齿轮28和圆形外齿轮29一起偏心地设置成两个泵部分12,13。当马达部分同时旋转三个齿轮27至29时，次摆线的啮合量 齿轮27至29中的每一个的齿连续地增加和减小，使得形成在每个齿轮27至29之间的每个泵室31,32的容量以一个循环为单位重复地增加和减少。 结果，在容量增加的泵室31,32中，从各进气口吸入燃料的同时传送。 转移的燃料然后从其容量减小的泵室31,32中的每个排出口排出。 在内周侧具有泵部12（泵室31），将第一燃料存储区域的燃料转移到第二燃料存储区域。 在外周侧的泵部13（泵室32）上，将第二燃料存储区域的燃料供给到燃料喷射阀侧。
-
公开(公告)号：JPH11218059A
公开(公告)日：1999-08-10
申请号：JP2110698
申请日：1998-02-02
Applicant: DENSO CORP
Inventor： MATSUMOTO TATSUYA , ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump to suppress the decrease of a fuel discharge amount and have high fuel suction capacity. SOLUTION: A pump flow passage 41 is formed in a C-shape between a casing body and a casing cover 22 along the outer periphery of an impeller. Fuel sucked in the pump flow passage 41 is pressurized through rotation of an impeller and discharged from the fuel pump to the engine side. A gas discharge port 42 is formed in such a manner that it extends through a casing cover 22 and intercommunicates a pump flow passage 41 and the interior of the fuel pump outside a fuel tank. A gas discharge port 42 is formed in the terminal end 54 of the pump flow passage 41, and the diameter (d) of the gas discharge port 42 is set to a value within a range of 0.2 mm
-
公开(公告)号：JPH10162923A
公开(公告)日：1998-06-19
申请号：JP31986996
申请日：1996-11-29
Applicant: DENSO CORP
Inventor： ITO MOTOYA , MATSUMOTO TATSUYA , KIYOSE KENZO
Abstract: PROBLEM TO BE SOLVED: To provide a commutator excellent in durability by adopting a carbon material. SOLUTION: A fuel pump 10 is constituted of a pump part 20 and a motor part 30 for driving the pump part 20. Fuel transferred from the pump part 20 to the inside of the motor part 30 by exerting pressure is exhausted from a fuel exhaustion port 43 to an engine. A contact part 62 of a commutator 60 slidingly engaging a brush is formed by adding amorphous carbon to natural carbon. Hence, mechanical strength of the contact part 62 is enhanced to decrease an amount of abrasion due to sliding engagement with the brush. Thereby, the lifetime needed to reach the abrasion limit of the contact part 62 is prolonged to improve durability of the fuel pump 10. Moreover, inexpensive natural carbon can be adopted to reduce a manufacturing cost of the commutator 60.
-
公开(公告)号：JPH0968127A
公开(公告)日：1997-03-11
申请号：JP22198595
申请日：1995-08-30
Applicant: DENSO CORP
Inventor： ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To provide a fuel supply device whereby fuel can be supplied in accordance with an operating condition of an engine. SOLUTION: A flow control valve 10, comprising a housing 12, a movable part 14, a compression coil spring 16 and a coil 18, is constituted in an integral unit with or a separate unit from a fuel pump. The movable part 14 consisting of magnetic material is attracted to the downstream of fuel against energizing force of the compression coil spring 16 by electromagnetic attractive force generated by carrying a current in the coil 16. Then, an opening of the first communication path 15, closed by an internal wall 12e of a slide hole 12b in the housing 12, communicates with the second communication path 13 of the housing 12. In this way, a discharge passage 19, comprising the first/second communication paths 15, 13, communicates with each other, and fuel circulated in fuel passages 12a, 14a is partly discharged into a fuel tank through the discharge passage 19.
-
-
-
-
-
-
-
-
-
Search Results
70
records
(took 0.016 seconds)
