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1. 发明专利

JPS63272011A FAN-SHAPED DEFLECTION MAGNET WITH IRON MAGNETIC POLE 失效
公开(公告)号：JPS63272011A
公开(公告)日：1988-11-09
申请号：JP10426687
申请日：1987-04-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI KOJI , MAKI NAOKI , KITAMURA MASAJI , YAMAGUCHI KIYOSHI , TOMEOKU HIROSHI , NAKADA JOJI , NAKAJIMA MASAYUKI
IPC分类号： H05H7/04 , H01F5/00 , H05H13/04
摘要： PURPOSE:To achieve a uniformity of a magnetic field which is enough to accumulate electron beams over the whole circumference of a deflection magnet by making a height of a magnetic substance yoke part where the deflection magnet is made up increase or decrease in order from an entrance to a center part of an electron orbit. CONSTITUTION:At a fan-shaped deflection magnet making up a magnetic pole 3 of a magnetic substance in an arc-like hollow part and also having a magnetic substance yoke 2 where at least one pair of deflection coils 1 are housed in the hollow part, this device permits height dimensions of the above magnetic substance yoke 2 to vary with the change of an azimuth theta. For example, this device allows a height Hout of an outer circumference part 2a of the deflective magnetic substance yoke 2 in the case of theta=180 deg. to vary in the form of stepped parts with the charge of the azimuth theta by causing a center part of the deflection magnet, that is, a part in case of theta=90 deg. to be a symmetric plane and permits the height dimensions Hout only in the vicinity of end parts of the deflection magnet to increase.

2. 发明专利

JPS63272010A DEFLECTION MAGNET OF SMALL-SIZED ELECTRONIC STORAGE RING 失效
公开(公告)号：JPS63272010A
公开(公告)日：1988-11-09
申请号：JP10426487
申请日：1987-04-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI KIYOSHI , MAKI NAOKI , KITAMURA MASAJI , KOBAYASHI KOJI , TOMEOKU HIROSHI , NAKADA JOJI , NAKAJIMA MASAYUKI
IPC分类号： H05H7/04 , H01F5/00 , H05H13/04
摘要： PURPOSE:To obtain a superconducting deflection magnet with a fan shaped iron magnetic pole where a uniform deflection magnetic field can be generated by causing ratios between coil distances at outer and inner circumference sides from an electron orbit to be minimum or maximum and the like at center positions with respect to deflection angles of the deflection magnet. CONSTITUTION:A pair of magnetic poles 3 of a magnetic substance at least and a pair of coils 4 at least are arranged at an arc-like hollow part formed in a magnetic substance yoke 2 and an electron orbit 5 is arranged in the above hollow part. In cases where a mutual distance of a pair of the coils 4 at the outer circumference side from the electron orbit 5 is represented by (a) and the mutual distance of a pair of the coils 4 at the inner circumference side from the electron orbit 5 is represented by (b) at a deflection magnet used in a magnetic field of a saturated region of the magnetic substance, this configuration allows values of ratios a/b to be maximum or minimum at the center positions with respect to deflection angles of the deflection magnet and as these positions approach from places of maximum or minimum of a/b to an entrance of electrons, this structure permits the values of the ratios a/b to vary so as to come to a monotone decrease function or a monotone increase function regarding dimensions of the deflection angles and also makes up symmetric coils so that the center positions with respect to the deflection angles may become a symmetric plane.

3. 发明专利

JPS6427199A DEFLECTION MAGNET AND EXCITER THEREOF 失效
公开(公告)号：JPS6427199A
公开(公告)日：1989-01-30
申请号：JP18100287
申请日：1987-07-22
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KITAMURA MASAJI , ITO MOTOYA , KAKIUCHI SHUNJI , MAKI NAOKI , KOBAYASHI KOJI , YAMAGUCHI KIYOSHI , TOMEOKU HIROSHI , NAKAJIMA MASAYUKI , HOSOKAWA TERUO , UNO TAIDO
IPC分类号： H05H13/04 , G21K1/093 , H05H7/04
摘要： PURPOSE:To keep a deflection magnetic field uniform below a specified value and extend the storage life of a charged particle beam by arranging magnetic field correction coils on magnetic pole surfaces of iron cores located opposite to each other in a manner that the correction coils are located on both sides of a vacuum chamber. CONSTITUTION:Magnetic field correction coils 1 are placed on both sides of a vacuum chamber 3 for storing a charged particle beam 6 in a gap between magnetic poles 10a, 10b arranged inside an iron core 8 of a sectorial or semicircular shape. The upper and lower magnetic field correction coils 1a, 1b of the coil 1 are formed to have cross-sectional shapes symmetrical with respect to the orbit surface of the charged particle beam 6. With this constitution, a magnetic field is produced to offset nonuniform magnetic field of deflection magnetic field caused with a particle accelerating deflection magnet to keep the deflection magnetic field uniform below a specified value, reduce instability of the charged particle beam at the time of storing the charged particle beam and extend the storage life of the charged particle beam.

4. 发明专利

JPS63272012A FAN-SHAPED DEFLECTION MAGNET WITH IRON MAGNETIC POLE 失效
公开(公告)号：JPS63272012A
公开(公告)日：1988-11-09
申请号：JP10426787
申请日：1987-04-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI KOJI , MAKI NAOKI , KITAMURA MASAJI , YAMAGUCHI KIYOSHI , TOMEOKU HIROSHI , NAKADA JOJI , NAKAJIMA MASAYUKI
IPC分类号： H05H7/04 , H01F5/00 , H05H13/04
摘要： PURPOSE:To secure a favorable uniformity of a magnetic field over the whole circumference of a deflection magnet by providing slits at an iron core yoke part where the deflection magnet is made up and by making heights of the slits increase or decrease in order from an entrance to a center part of an electron orbit. CONSTITUTION:At a fan-shaped deflection magnet where a pair of magnetic poles 3 of a magnetic substance and a pair of deflection coils 1 at least are mounted in an arc-like hollow part that is formed at a magnetic substance yoke 2, slits 4 are provided at the magnetic substance yoke part 2 of inner and outer circumference sides located at a charged particle orbit part 5 and this device allows height dimensions Hout of the slits to vary with the change of an azimuth theta. For example, non-magnetic materials are inserted in the above slits 4 and the slits 4 where their height dimensions Hout are made up in the form of stepped parts, for example, are provided at an interval where the azi muth theta is a little less than 30 deg. in the case of the magnetic substance yoke 2 of the fan-shaped deflection magnet where theta=180 deg..

5. 发明专利

JPS642300A ELECTRON STORAGE RING 失效
公开(公告)号：JPS642300A
公开(公告)日：1989-01-06
申请号：JP15548887
申请日：1987-06-24
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TSUMAKI KOJI , NISHI MASATSUGU , KITAMURA MASAJI , NAKADA JOJI , NAKAJIMA MASAYUKI
IPC分类号： H05H13/04 , G21K1/093 , H05H7/04 , H05H7/06
摘要： PURPOSE:To aim at reduction in slippage of a closed orbit due to a fringe magnetic field by installing each of iron magnetic poles whose one ends are connected to iron cores of a deflecting magnet so as to surround a superconducting coil, and other ends are set up so as to be opposed to each other with the orbital top as the center. CONSTITUTION:Iron cores BF1 and BF2 are added anew to both upper and lower iron cores B1 and B2 and connected to a deflecting magnet so as to surround a superconducting coil 1. Respective one ends H1 and H2 of these two new iron magnetic poles BF1 and BF2 are connected to the iron cores B1 and B2 of the deflecting magnet, and other ends I1 and I2 are set up so as to be opposed to each other in holding an orbital surface in between. And, a magnetic field is formed on the orbital surface by these new iron magnetic poles I1 and I2. With this constitution, no magnetic flux is leaked to the outside from these new iron magnetic poles BF1 and BF2, and a magnetic field in the reverse direction to the deflecting magnet can be formed in a new iron magnetic pole part 5, thus orbital slippage is corrected.

6. 发明专利

JPS6472499A DEFLECTING MAGNET 失效
公开(公告)号：JPS6472499A
公开(公告)日：1989-03-17
申请号：JP22636287
申请日：1987-09-11
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KITAMURA MASAJI , KOBAYASHI KOJI , KAKIUCHI SHUNJI , YAMAGUCHI KIYOSHI , TOMEOKU HIROSHI , MAKI NAOKI , NAKADA JOJI , UNO TAIDO
IPC分类号： H05H13/04 , H05H7/04
摘要： PURPOSE:To uniformize magnetic flux density in a gap between magnetic poles by forming a vertical section of a coil setup to the orbital direction of a charged particle beam as specified, in case of a deflecting magnet at a synchrotron radiation generator or the like. CONSTITUTION:A pair of opposed cryostats 6, having a superconducting coil of a deflecting magnet built in, are set up in a void in a cold core 1, and upper superconducting coils 2a, 2b and lower superconducting coils 2a', 2b' are installed symmetrically with respect to an orbital surface of a charged particle beam 5. In addition, a vertical space h2 of these coils 2a, 2b at the outer circumferential side of an orbit of the beam 5 is made larger than a vertical space h1 of the coils 2a, 2b at the inner circumferential side, while the horizontal width of a return yoke 7b at the outer circumferential side is made larger than that of a return yoke 7a at the inner circumferential side and as for the sectional form, the inner circumferential side and the outer circumferential side are formed asymmetrical separately. With this setup, magnetic resistance in magnetic flux passing through both inner and outer circumferential sides is uniformized over the whole orbit length of the charged particle beam rather than a position where the charged particle beam passes through whereby magnetic flux density in a gap between magnetic poles becomes uniformized.

7. 发明专利

JPS63272014A FAN-SHAPED DEFLECTION MAGNET WITH IRON MAGNETIC POLE 失效
公开(公告)号：JPS63272014A
公开(公告)日：1988-11-09
申请号：JP10426587
申请日：1987-04-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI KOJI , MAKI NAOKI , KITAMURA MASAJI , YAMAGUCHI KIYOSHI , TOMEOKU HIROSHI , NAKADA JOJI , NAKAJIMA MASAYUKI
IPC分类号： H05H7/04 , H01F6/00 , H05H13/04
摘要： PURPOSE:To achieve a uniformity of a magnetic field which is good enough to accumulate electron beams over the whole circumference of a deflection magnet by making an outer radius of a magnetic substance yoke part where the deflection magnet is made up increase or decrease in order from an entrance to a center part of an electron orbit. CONSTITUTION:At a fan-shaped deflection magnet mounting a magnetic pole 3 of a magnetic substance in an arc-like hollow part and also mounting a magnetic substance yoke 2 where a pair of deflection coils 1 at least are housed in the hollow part, this device permits a radius of an outer circumference plane of the above magnetic substance yoke 2 to vary with the change of an azimuth theta. For example, this device permits an outer radius Rout of the magnetic substance yoke part 2 to vary in the form of stepped parts with the change of the azimuth theta by causing a center part of the magnetic substance yoke part 2 of the deflection magnet in the case of theta=180 deg., that is, a part in the case of theta=90 deg. to be a symmetric plane and permits the outer radius Rout in the vicinity of the end parts of the deflection magnet to decrease.

8. 发明专利

JP2009171799A Permanent magnet type synchronous motor 有权
标题翻译：永磁同步电机
公开(公告)号：JP2009171799A
公开(公告)日：2009-07-30
申请号：JP2008009967
申请日：2008-01-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KITAMURA MASAJI , TAJIMA FUMIO , NIHEI HIDEKI , OGATA TAKAFUMI , YAMAZAKI MASAHIDE
IPC分类号： H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type synchronous motor which reduces a torque pulsation to several percent or less of a time average torque and is inexpensively manufactured.
SOLUTION: The number of stator salient-poles per pole or phase is 0.75. A permanent magnet is axially divided into two portions. Two divided permanent magnets are disposed to be skewed at an electric angle of 30°. An amplitude of an even-ordered harmonic torque included in a torque waveform generated by half permanent magnets located on the output side or the non-output side of halved permanent magnets is the minimum value with respect to a ratio of an open angle and a polar pitch of the permanent magnet in the circumferential direction.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种永久磁铁式同步电动机，其将扭矩脉动降低到时间平均扭矩的几个百分点以下，并且廉价地制造。
解决方案：每极或相位的定子极点数为0.75。永磁体轴向分为两部分。两个分开的永久磁铁设置成以30°的电角度倾斜。由位于半圆形永磁体的输出侧或非输出侧的半个永久磁铁产生的转矩波形中包含的偶次谐波转矩的振幅是相对于开度角和极性的比率的最小值永久磁铁在圆周方向的间距。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008148469A Spindle motor, disk driving device and manufacturing method of stator core 审中-公开
标题翻译：主轴电机，磁盘驱动器和定子芯的制造方法
公开(公告)号：JP2008148469A
公开(公告)日：2008-06-26
申请号：JP2006333940
申请日：2006-12-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAJIMA FUMIO , ABE TERUYOSHI , ITO MOTOYA , ISHIKAWA YOSHITOSHI , KITAMURA MASAJI , YASUJIMA TOSHIYUKI
IPC分类号： H02K1/18 , G11B19/20 , H02K1/02 , H02K1/14 , H02K15/02 , H02K21/22
CPC分类号： H02K15/022 , G11B17/028 , G11B17/038 , G11B19/2009 , H02K1/146 , Y10T29/49009
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor where an iron loss and cogging torque can be reduced. SOLUTION: In the spindle motor having a stator and a rotator, the stator is provided with a stator core having a yoke and a salient pole and a stator coil. The stator core is formed of a laminated steel plate. The salient pole and the yoke of the steel plate are formed by etching work. The thickness of the steel plate is 0.05 to 0.30 mm. It is desirable that the steel plate is a silicon steel plate having crystal grains. COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP2007221935A Rotary electric machine and engine activator 审中-公开
标题翻译：旋转电机和发动机激活器
公开(公告)号：JP2007221935A
公开(公告)日：2007-08-30
申请号：JP2006040788
申请日：2006-02-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAJIMA FUMIO , KANAZAWA HIROYUKI , KITAMURA MASAJI , MORINAGA DAISAKU
IPC分类号： H02K11/00 , H02K19/36
摘要： PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of improving magnetic pole position detecting accuracy, by effectively reducing the amount of leakage flux passing through a magnetic pole position detector. SOLUTION: The rotary electric machine is provided a rotor 19 supported by a rotary shaft 16, a stator 23, a magnetic pole position detector 28 attached on the rotary shaft 16, stator frames (24A, 24B) made of a non-magnetic material and supporting these. The leakage magnetic flux of the rotor 19 uses the rotary shaft 16 as a magnetic path. The magnetic path of the magnetic flux is formed on a first magnetic circuit, circulating in the radial direction from the rotary shaft 16 through the magnetic pole position detector 28; and a second magnetic circuit detouring from the rotary shaft 16 and reaching the external periphery of the magnetic pole position detector 28. The first and second magnetic circuits are formed so as to merge into each other in the external periphery of the magnetic pole position detector 28. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：通过有效地减少通过磁极位置检测器的漏磁通量，提供能够提高磁极位置检测精度的旋转电机。解决方案：旋转电机设置有由转轴16支撑的转子19，定子23，安装在旋转轴16上的磁极位置检测器28，由非旋转轴16制成的定子框架（24A，24B）磁性材料并支持这些。转子19的漏磁通使用旋转轴16作为磁路。磁通的磁路形成在通过磁极位置检测器28从旋转轴16沿径向循环的第一磁路上; 以及从旋转轴16迂回到达磁极位置检测器28的外周的第二磁路。第一和第二磁路形成为在磁极位置检测器28的外周彼此合并。版权所有（C）2007，JPO＆INPIT

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