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21. 发明专利

JPH06154986A DIE CASTING PRODUCT 失效
公开(公告)号：JPH06154986A
公开(公告)日：1994-06-03
申请号：JP31678892
申请日：1992-11-26
申请人： HITACHI LTD
发明人： HASHIMOTO MANABU , NAGAE HIROMITSU
IPC分类号： B22D17/20 , B22D17/22 , B22D31/00
摘要： PURPOSE:To reduce working time and cost owing to the unnecessitating of cutting of burrs by making gate cross sectional shape in an aluminum die casting product small in the vicinity of the boundary part of the product, and generating the stress concentration, thereby making the burrs at the gate trace part small. CONSTITUTION:By making at least one side of the width or the thickness in the cross sectional shape of a sprue or an overflow gate 2 near the boundary part of the aluminum die casting product 3 smaller than the sprue or the overflow body 1, or the other part of the sprue or the overflow gate 2, the stress concentration is generated in the vicinity of the boundary part of the aluminum die casting product 3 and the burrs shape at the gate trace part is made small.

22. 发明专利

JP2003229319A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003229319A
公开(公告)日：2003-08-15
申请号：JP2002024907
申请日：2002-02-01
申请人： HITACHI LTD
发明人： OTAKA YASUNORI , YASUKURA YOICHI , HASHIMOTO MANABU
IPC分类号： F02P15/00 , H01F38/12
摘要： PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine capable of alleviating heat stress and improving reliability. SOLUTION: A center core, a secondary coil wound on a secondary bobbin, a primary coil wound on a primary bobbin in turn from the inside in a coil case are arranged. A peeling layer is provided between a center core and the secondary bobbin, in the ignition coil for the internal combustion engine with an insulating resin filled between these components. COPYRIGHT: (C)2003,JPO

23. 发明专利

JP2000091144A IGNITION COIL FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000091144A
公开(公告)日：2000-03-31
申请号：JP25262198
申请日：1998-09-07
申请人： HITACHI LTD
发明人： TANAKA HIROYUKI , MIHARA MAKOTO , HASHIMOTO MANABU
IPC分类号： H01F38/12 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To provide excellent thermal stress relaxation and to rationalize an assembling work and reduce its cost by covering or coating a core with a molded elastic member having insulation properties at least from an axial one end face to a part of a surface along an axis, and inserting the core into a secondary bobbin. SOLUTION: A primary bobbin 4, a secondary bobbin 2, a coil case 6 and the like are molded. A silicone rubber 9 is molded to cover a center core 1 and a magnet 10. Then, the core 1 and the magnet 10 enclosed by the rubber 9 are simultaneously inserted into the bobbin 1, and thereafter a thermosetting epoxy resin 8 is vacuum injected in an overall air gap of the assembly of them. The molding (elastic member) 9 may cover or coat from at least one axial end face of the magnet 10 to a partial surface along an axis of the core 1.

24. 发明专利

JP2006142729A Insert injection molding method, mold for insert injection molding and its molding 有权
标题翻译：插件注塑成型方法，插件注塑成型模具及其模具
公开(公告)号：JP2006142729A
公开(公告)日：2006-06-08
申请号：JP2004338324
申请日：2004-11-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUDO MITSURU , MISHIRO OSAMU , AMAGI SHIGEO , NISHIMURA YOSHIMICHI , HASHIMOTO MANABU
IPC分类号： B29C45/14 , B29C33/12 , B29C45/26 , B29L31/34
摘要： PROBLEM TO BE SOLVED: To provide an insert injection molding method which in a freely advancing and retreating manner moves a plurality of holding pins at any time during the molten resin packing process while suppressing the dislocation of an insert member and which, thereby, covers the whole of the insert member with a resin so as not to bring about opened parts.
SOLUTION: In the cavity there are provided the holding pins 23, 24 which are so structured as to be capable of free advance and retreat and which hold the insert molding member 110. In the state that the holding pins 23, 24 are projected from the cavity face 30 and that the insert molding member 110 is arranged in the cavity in a predetermined position, a molten resin is injected. After the injection of the molten resin, the holding pins 23, 24 are retreated when a previously set time has passed. Into the space generated between the insert molding member 110 and the holding pins 23, 24 the molten resin is packed and fused to cover the whole circumference of the insert molding member 110 with the resin, producing a product 100 by the insert injection molding.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种插入注射成型方法，其在自由前进和后退的过程中，在熔融树脂包装过程中的任何时间移动多个保持销，同时抑制插入件的位错，从而用树脂覆盖整个插入构件，从而不会带来打开的部分。解决方案：在空腔中设置有保持销23,24，其被构造成能够自由前进和后退，并且保持嵌件模制构件110.在保持销23,24是从空腔面30突出，并且插入成型构件110在空腔中被布置在预定位置，注入熔融树脂。在注入熔融树脂之后，当预先设定的时间过去时，保持销23,24被退回。在插入成型构件110和保持销23,24之间产生的空间中，熔融树脂被填充并熔化以用树脂覆盖插入成型构件110的整个周边，通过插入注射成型制造产品100。版权所有（C）2006，JPO＆NCIPI

25. 发明专利

JPH1061581A VORTEX PUMP 失效
公开(公告)号：JPH1061581A
公开(公告)日：1998-03-03
申请号：JP21707396
申请日：1996-08-19
申请人： HITACHI LTD
发明人： HASHIMOTO MANABU , OTAKA YASUNORI
IPC分类号： F04D5/00 , F04D23/00 , F04D29/30
摘要： PROBLEM TO BE SOLVED: To facilitate the positioning at the time of screwing an impeller to a shaft of a driving unit, and to improve the assembling workability by providing one or more holes or recessed parts in a disc-shaped impeller having a blade, which is formed of multiple sector grooves extended in the radial direction in the periphery, at a part inside of the blade part. SOLUTION: A motor 1 as a driving unit of an electric air pump is surrounded by a motor cover 9, and fixed to an inner casing 3 of two casings by a screw 10, and an impeller 7 is fixed to a shaft 4 by a screw 11 so as to form a pump flow passage coaxial with a casing 3. The other casing is fixed to the casing 3 so as to cover the impeller 7, the casing 3 and the pump flow passage. In this case, the impeller 7 is fixed by using an auxiliary appliance through a fixing hole 14 provided inside of a blade part 13 of the impeller 7. With this structure, the impeller 7 can be screwed to the shaft 4 without damaging the blade 13, and since the assembling of a driving unit side can be firstly performed, degree of freedom of assembling can be improved.

26. 发明专利

JPH09242690A VORTEX PUMP 失效
公开(公告)号：JPH09242690A
公开(公告)日：1997-09-16
申请号：JP4467396
申请日：1996-03-01
申请人： HITACHI LTD
发明人： HASHIMOTO MANABU , ADACHI HIDESHI
IPC分类号： F04D5/00 , F04D23/00 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide a low noise type vortex pump whose efficiency is improved. SOLUTION: A double-blade impeller 30 is arranged between a casing 10 and a casing 20, and a channel formed of the casings 10, 20 comprises a pump channel X, a communicating passage Y1 which is connected to one end side of the pump channel X and has a channel in a flat surface including the channel center of the pump channel X, a communicating passage Y2 which is connected to the other end side of the pump channel X and has a channel in the flat surface including the channel center of the pump channel X, an intake passage Z1 which is connected to a communicating passage Y1 and whose channel center is perpendicular to the flat surface including the channel center of the pump channel X, and a delivery passage Z2 which is connected to a communicating passage Y2 and whose channel center is perpendicular to the flat surface including the channel center of the pump channel X. A cross section in the flat surface including the channel center of the delivery passage Z2 and the channel center of the communicating passage Y2, is removed so that the rate of the cross sectional area of the opposite side channel against a delivery side channel cross sectional area is set to 0.6 or below, thus the efficiency of a pump is improved.

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