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91. 发明专利

JPH10164780A ROTATING ELECTRIC MACHINE AND ITS STATOR 失效
公开(公告)号：JPH10164780A
公开(公告)日：1998-06-19
申请号：JP31905196
申请日：1996-11-29
申请人： HITACHI LTD
发明人： MIKAMI HIROYUKI , OHARAGI HARUO , ARAI KEIJI , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , SENOO MASAHARU
IPC分类号： H02K1/16 , H02K17/12
摘要： PROBLEM TO BE SOLVED: To equalize the maximum magnetic density of the iron core part of a stator even after setup or according to the design specification or machine kind, by equipping a rotating-electric machine with a casing which possesses a bearing for housing a stator and a rotor counterposed through a gap on its periphery side and supporting the rotor. SOLUTION: A stator 1 is equipped with an iron core 2 which has iron core teeth 7 among plural slots 3 to accommodate windings 4. The teeth of an iron core lying among the slots 3 equal in phase of the current applied to each of the windings 4 within adjacent slots 3 are made 7a, and the teeth lying among the slots different in phase of the current are made 7b, and magnetic material 8 is installed at the tooth 7b, consequently the sectional area of the tooth 7b increases, and the maximum magnetic flux density drops, and the maximum magnetic flux density in the peripheral direction of the iron core tooth 7 is made roughly equal. The distribution of the iron loss of the tooth 7b is made roughly equal in the circumferential direction of the iron core tooth 7, whereby the cooling effect by ventilation is improved and the partial temperature rise within the machine can be suppressed, and the downsizing of the machine size, the improvement of the motor property, and the reduction of vibration and noise can be achieved.

92. 发明专利

JPH10136012A RECEPTION REGULATION ELECTRONIC MAIL SYSTEM, RECEPTION RESTRICTION METHOD AND STORAGE MEDIUM 失效
公开(公告)号：JPH10136012A
公开(公告)日：1998-05-22
申请号：JP29182396
申请日：1996-11-01
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , ARISAWA YUMIKO , HIRASHIMA YOKO , KOTAKI NORIYASU
IPC分类号： G06F13/00 , H04L12/54 , H04L12/58
摘要： PROBLEM TO BE SOLVED: To provide a reception restriction electronic mail system which can restrict reception according to the transmission source. SOLUTION: Whether mails of all formats will be received (unlimited), or only the mails of the specified format are to be received (limited) or the mails of all the mail formats are refused (refusal) have been previously registered in a reception propriety information storage part 7, through a user interface part 3 for respective transmission source identification information of the mails. When the mails are received, a content judgment part 6 judges the mail formats of the received mails. A reception judgment part 5 refers to the reception propriety information storage part 7 and judges whether the received mail is to be stored in a main management part 4 or abolished in accordance with the transmission source identification information and the mail format of the received mail.

93. 发明专利

JPH1052013A INDUCTION MOTOR 失效
公开(公告)号：JPH1052013A
公开(公告)日：1998-02-20
申请号：JP20383696
申请日：1996-08-01
申请人： HITACHI LTD
发明人： MIKAMI HIROYUKI , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , KAJIWARA KENZO , SENOO MASAHARU
IPC分类号： H02K17/16
摘要： PROBLEM TO BE SOLVED: To provide an induction motor having a rotor structure suppressing the increase of its leakage magnetic flux when its rotor has a skew structure. SOLUTION: Forming in a rotor core 4 slots 3 having both enclosed slot structures with applied skews and their maximum circumferential dimensions Wb (maximum widths), alluminum aloys, for example, are cast in the slots 3 to form secondary conductors 5 in them. After forming the secondary conductors 5, in the portion of the outer periphery of the rotor core 4 wherein each slot 3 is positioned, a slit 18 is provided by notching this portion within the scope of the maximum circumferential dimension Wb of each slot 3 in the parallel direction with the rotating shaft of a rotor 1. For example, when providing the slits 18 one by one in all the cross sections of the secondary conductors 5, the slits 18 are formed in the respective regions of the slots 3, each of which ranges from one end side of each slot 3 to its other end side correspondingly to its foregoing maximum dimension Wb, in order intermittently ranging from the lead side of the skew to its delay side. Thereby, the slots 3 are altered from the enclosed type ones into semi-enclosed type ones.

94. 发明专利

JPH09289761A INDUCTION MOTOR 失效
公开(公告)号：JPH09289761A
公开(公告)日：1997-11-04
申请号：JP9982596
申请日：1996-04-22
申请人： HITACHI LTD
发明人： OHARAGI HARUO , MIKAMI HIROYUKI , KIKUCHI SATOSHI , IDE KAZUMASA , TAKAHASHI MIYOSHI , KAJIWARA KENZO , KOMATA TAKESHI , SATO KAZUO
IPC分类号： H02K1/26 , H02K17/16
摘要： PROBLEM TO BE SOLVED: To provide an induction motor which can improve its characteristics for general purpose at a low cost without increasing the number of parts. SOLUTION: This induction motor is provided with a stator where a stator winding is wound around a stator core having a plurality of stator slots 3, and a cage rotor where a secondary conductor 5 consisting of a bar and an end ring 6 is formed at a rotor iron core 2 having a plurality of rotor slots 3 by means of aluminum die casting. In this induction motor, an axial part of top of the secondary conductor, and an axial part of rotor iron core 2 on the top of the rotor slot 3 are cut out near the surface of the rotor iron core 2.

95. 发明专利

JPH09233783A INDUCTION MOTOR 失效
公开(公告)号：JPH09233783A
公开(公告)日：1997-09-05
申请号：JP4097896
申请日：1996-02-28
申请人： HITACHI LTD
发明人： OHARAGI HARUO , MIKAMI HIROYUKI , KIKUCHI SATOSHI , IDE KAZUMASA , TAKAHASHI MIYOSHI , KAJIWARA KENZO , KOMATA TAKESHI , SATO KAZUO
IPC分类号： H02K1/26 , H02K17/16
摘要： PROBLEM TO BE SOLVED: To acquire the flexibility of an induction motor at a low cost without increasing the number of its parts and improve its performance, by providing recessed portions with depths reaching the inside of its secondary conductor in its bridge portion of the outer peripheral surface layer portion of its rotor core which is adjacent to its wholly closed slot. SOLUTION: Machining in an eliminating way one-portions of the outer peripheral surface layer portion of a rotor core 2 of a rotor 1, a plurality of recessed portions 9 are provided axially intermittently to bore radially them in both a bridge portion 10 of one portion of the outer peripheral surface portion and a bar 4 of a secondary conductor 5 adjacent to the bridge portion 10. Thereby, after post-machining a general purpose induction motor, i.e., after forming the secondary conductor 5 in a wholly closed slot 3 by aluminum die-casting, eliminating by the formations of the recessed portions 9 both one-portions of the upper portion of the secondary conductor 5 and one-portions of the rotor core 2, the performance of the general purpose induction motor can be improved. Therefore, an induction motor can be obtained wherein its flexibility is acquired at a low cost without increasing the number of its parts and its performance is improved suppressing its higher-harmonic currents.

96. 发明专利

JPH0974726A MANUFACTURE OF INDUCTION MOTOR 失效
公开(公告)号：JPH0974726A
公开(公告)日：1997-03-18
申请号：JP22993395
申请日：1995-09-07
申请人： HITACHI LTD
发明人： OHARAGI HARUO , MIKAMI HIROYUKI , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , TAJIMA FUMIO , NAGANUMA RYOICHI , KAJIWARA KENZO , KOMATA TAKESHI
IPC分类号： H02K17/16
摘要： PROBLEM TO BE SOLVED: To decrease the electric resistance of a secondary conductor and to improve the characteristics even for an induction motor, wherein copper is used for a rotor bar and an end ring is formed by aluminum die casting. SOLUTION: A rotor core 2 having a plurality of slots extending in the axial direction, a rotor bar 4, which is inserted into the slots of the rotor core 2, and an end ring 6, which is provided at the end part of the rotor bar, are provided, and the end ring is formed by aluminum die casting in this induction motor. In the manufacturing method of the induction motor, an aluminum film 5 is applied beforehand on the outer surface of a copper bar, which is to become the rotor bar 4. The rotor bar 4 is inserted into the slots of the rotor core 2. Thereafter, the end ring 6 is formed by the aluminum die casting.

97. 发明专利

JPH07334400A DATA BASE ACCESS SYSTEM AND CONTROL METHOD FOR THE SAME 失效
公开(公告)号：JPH07334400A
公开(公告)日：1995-12-22
申请号：JP12657394
申请日：1994-06-08
申请人： HITACHI LTD
发明人： ITO HIROMICHI , KIKUCHI SATOSHI , NAKANE KEIICHI , HASHIMOTO TAKASHI , NISHIYAMA EISAKU
IPC分类号： G06F12/00 , G06F17/30
摘要： PURPOSE:To distribute a load caused by language translation to plural information processors by converting the character code of a request into the character code of a previously decided character code set at an access managing means before transmitting that character code to a data base access language translating means, and reporting that converted character code to a client information processor. CONSTITUTION:The character code set identification information of the character code used for issuing the request of an application software executing means 11 is reported to an access managing means 112V. That access managing means 112V converts the character code of the received request into the character code of the previously decided character code set before transmitting that character code to a data base access language translating means 115 and reports that converted character code to a client information processor 110. Thus, the load can be distributed to plural gateway information processors 130.

98. 发明专利

JPH07163108A INDUCTION MOTOR 失效
公开(公告)号：JPH07163108A
公开(公告)日：1995-06-23
申请号：JP30799793
申请日：1993-12-08
申请人： HITACHI LTD
发明人： OHARAGI HARUO , KIKUCHI SATOSHI , IDE KAZUMASA , MIKAMI HIROYUKI , TAKAHASHI MIYOSHI , SENOO MASAHARU , KOMATA TAKESHI
IPC分类号： H02K17/16
摘要： PURPOSE:To obtain an induction motor having excellent characteristics by employing a rotor structure where a short circuit ring can be formed between blocks using a conventional inserter. CONSTITUTION:In an induction motor where secondary conductors are inserted into closed slots 6 made in a rotor 1 to constitute a squirrel-cage winding, a first core section 5 having a wide slot 7 of closed structure is provided in the axial center of the core of the rotor 1 and second and third narrow core sections 4A, 4B having closed structure are provided on the opposite sides of the first core section 5. The wide slot part 7 of the first core section 5 is superposed on the narrow slot parts 6A, 6B of the second and third core sections 4A, 4B. The slots 7 superposed on the first to third core sections 4A, 5, 4B are communicated thus short-circuiting the secondary conductors in the axial center of the rotor core.

99. 发明专利

JPH06348562A DATA BASE CONTROL INFORMATION MANAGEMENT SYSTEM 失效
公开(公告)号：JPH06348562A
公开(公告)日：1994-12-22
申请号：JP13723593
申请日：1993-06-08
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , NONAKA NAOMICHI , TANAKA MASARU
IPC分类号： G06F12/00 , G06F17/30 , G06F15/40
摘要： PURPOSE:To share AP control information by converting control information regarding an AP(application program) to data base format and storing the control information and data base data on a server with a standard data operation language. CONSTITUTION:The data input/output processing part 15 of a client 2 stores data that a user inputs in a real data storage part 9 with the standard data operation language for accessing a data base. When the user defines the control information regarding the data base AP(application program), the data input/ output processing part 15 converts the defined AP control information to the data base format and stores it in an AP control information storage part 10 with the same data operation language with the access to the data base. Then when a request to execute the data base AP is received from the user, the data input/output processing part 15 retrieves the AP control information stored in the AP control information storage part 10 with the data operation language and generates a form screen and a report screen.

100. 发明专利

JPH06217038A TELEPHONE SET WITH FACSIMILE INCOMING REGULATING FUNCTION 失效
公开(公告)号：JPH06217038A
公开(公告)日：1994-08-05
申请号：JP813493
申请日：1993-01-21
申请人： HITACHI LTD
发明人： ONO SHUJI , KIKUCHI SATOSHI
IPC分类号： H04M1/66 , H04M1/663 , H04M1/665 , H04M11/00
摘要： PURPOSE:To provide a telephone set which can automatically deal with the incoming with no ringing tone when the telephone set receives an incoming call from a FAX by the automatic transmission caused by a misdialing operation. CONSTITUTION:When a facsimile incoming control mode is displayed at a display part 9, a control part 2 connects a circuit by a circuit control part 1 through the incoming processing and with no ringing tone. Then the part 2 connects the circuit to a MODEM 6 after a tonal signal is monitored by a signal monitoring part 4 and performs the communication control in the FAX incoming processing procedure to receive the FAX incoming. If no tonal signal is monitored, a ringing tone is transmitted through a speaker 7 and a handset 10 is hooked off. Thus the circuit is connected to the handset 10 and a busy mode is secured.

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