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1. 发明专利

JP2004153925A Ferromagnetic plate and eddy current type reduction gear 审中-公开
公开(公告)号：JP2004153925A
公开(公告)日：2004-05-27
申请号：JP2002316003
申请日：2002-10-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANI YASUTOKU , IMANISHI KENJI
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide a ferromagnetic plate and an eddy current type reduction gear that increase the density of a line of magnetic force that goes toward a rotor from a permanent magnet via a pole piece, increase the density of a line of magnetic force that enters the rotor from the rear rotational side of the pole piece, make the line of magnetic force from the permanent magnet easily enter the rotor via the pole piece, make the line of magnetic force from the rotor easily enter the pole piece, and improve braking torque particularly when braking.
SOLUTION: The pole piece 4 is arranged so as to oppose the permanent magnets 5, 5a and 5b of the eddy current type reduction gear. Between external and internal peripheries of the pole piece 4, throttled parts 4a each having a cross section smaller than the internal peripheral surface, or than the external peripheral surface, or than the area of the external peripheral surface are formed at either the external periphery or the internal periphery. A forward protrusion 4c and a backward protrusion 4b are formed for braking, which are formed such that forward and backward external peripheral sides facing traveling directions of rotations of the rotors 2a, 2b are flatly protruded. A projected shape viewed from the upper side of a main surface is spread toward the front side or the backside facing the traveling directions of the rotations.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004080988A Eddy current reduction gear 审中-公开
公开(公告)号：JP2004080988A
公开(公告)日：2004-03-11
申请号：JP2003284867
申请日：2003-08-01
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRAMATSU SHINICHIRO , TANI YASUTOKU , NOGUCHI YASUTAKA , FUKUI KUNIHIRO
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide an eddy current reduction gear that is superior in a braking efficiency by enhancing the conductivity of a braking disk and increasing the magnetic flux density thereof.
SOLUTION: The eddy current reduction gear includes a braking disk mounted on a rotatry shaft, a guide cylinder supported by a non-rotating part and arranged as opposed to the main surface of the braking disk, a holding member that is housed in the interior of the guide cylinder and is movable in an approaching direction to the braking disk and in a departing direction therefrom, and a plurality of permanent magnets disposed on the surface of the holding member as opposed to the main surface of the braking disk, with the magnet poles of adjacent magnetic pole faces kept opposite to each other in direction and the magnetic pole faces facing the main surface of the braking disk. The eddy current reduction gear is of a small-sized and light-weight type, wherein the surface of the braking disk opposed to the permanent magnets is made up of a member having a high conductivity, and a protruding portion is provided on the portion of the braking disk surface opposed to the permanent magnets.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004072851A Eddy current reduction gear 审中-公开
公开(公告)号：JP2004072851A
公开(公告)日：2004-03-04
申请号：JP2002226699
申请日：2002-08-02
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TASAKA MASAHIRA , IMANISHI KENJI , TANI YASUTOKU , MIYAHARA MITSUO , NOGUCHI YASUTAKA
IPC分类号： F16D65/18 , H02K49/10 , F16D65/21
摘要： PROBLEM TO BE SOLVED: To provide excellent magnetic efficiency capable of allowing miniaturization and light weight, and to reduce the leakage of magnetic flux even at non-braking with a minimum switching stroke. SOLUTION: The eddy current reduction gear is a "magnet pole face opposing type" or "polepieceless type". A guide tube is made of a ferromagnetic body and at least a part of a wall is thin. A magnetic circuit shielding part is provided at the end face of the guide tube composed of a recess or a through part with a non-magnetic body preferred to be embedded. The guide tube is preferred to be provided with a reinforcing member. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003319637A Small and light eddy current speed reducer 有权
标题翻译：小和轻EDDY电流减速器
公开(公告)号：JP2003319637A
公开(公告)日：2003-11-07
申请号：JP2002121569
申请日：2002-04-24
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NOGUCHI YASUTAKA , MIYAHARA MITSUO , TANI YASUTOKU
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide a small and light eddy current speed reducer by reducing power required for switching to nonbraking and compactifying an apparatus.
SOLUTION: This small and light eddy current speed reducer is provided with a braking disc attached to a rotary shaft, a guide cylinder supported by a nonrotating section, a retaining ring capable of shifting back and forth in the direction of the rotary shaft, a plurality of permanent magnets arranged so that their magnetic poles adjoining each other in the circumferential direction are set facing each other, and a ferromagnetic material. A magnet-supporting plate mounted with each permanent magnet is attached tiltably to the retaining ring, or the retaining ring is divided into a plurality of segments in the circumferential direction, and they are tiltably constituted in the direction of the rotary shaft.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过减少切换到非制动和压实设备所需的功率来提供小而轻的涡流减速器。
解决方案：这种小而轻的涡流减速器设置有附接到旋转轴的制动盘，由非旋转部支撑的引导圆筒，能够沿着旋转轴的方向前后移动的保持环设置为使得它们在圆周方向上彼此相邻的磁极彼此相对设置的多个永磁体和铁磁材料。安装有每个永久磁铁的磁铁支承板可倾斜地安装在保持环上，或者保持环在圆周方向上分成多个段，并且它们沿旋转轴的方向可倾斜地构成。版权所有（C）2004，JPO

5. 发明专利

JP2004048978A Eddy-current reduction gear 审中-公开
标题翻译： EDDY电流减速齿轮
公开(公告)号：JP2004048978A
公开(公告)日：2004-02-12
申请号：JP2003023175
申请日：2003-01-31
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IMANISHI KENJI , NOGUCHI YASUTAKA , HIRAMATSU SHINICHIRO , TANI YASUTOKU , YAMAGUCHI HIROYUKI , TASAKA MASAHIRA , SAITO AKIRA , MIYAHARA MITSUO
IPC分类号： H02K49/10 , H02K49/02
摘要： PROBLEM TO BE SOLVED: To provide an eddy-current reduction gear which is of simple structure and yet excellent in braking efficiency, and is small in switching stroke and capable of high-speed switching.
SOLUTION: The eddy-current reduction gear comprises a braking disk coupled with a rotating shaft; a plurality of permanent magnets disposed so that their magnetic pole faces are opposed to the braking disk; and a driving mechanism which moves a plurality of the permanent magnets close to and away from the braking disk. Preferably, the eddy-current reduction gear further comprises a guide cylinder which is supported on a non-rotational structural portion that is not connected with the rotating shaft, houses a retaining ring, and is disposed opposite to the braking disk. The guide cylinder is provided with a ferromagnetic material in a position opposite the braking disk. Or, the whole of the guide cylinder, including its end face opposed to the permanent magnets, is formed of a nonmagnetic material.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种结构简单，制动效率优良的涡流减速装置，开关行程小，能够进行高速切换。解决方案：涡流减速齿轮包括与旋转轴联接的制动盘; 设置成使得它们的磁极面与制动盘相对的多个永磁体; 以及驱动机构，其使多个永久磁铁移动到靠近和远离制动盘的位置。优选地，涡流减速装置还包括：导向圆筒，其被支撑在不与旋转轴连接的非旋转结构部分上，容纳保持环，并且与制动盘相对设置。引导筒在与制动盘相对的位置设有铁磁材料。或者，包括其与永磁体相对的端面的整个导向筒由非磁性材料形成。版权所有（C）2004，JPO

6. 发明专利

JP2008141814A Eddy current speed reducer 有权
标题翻译： EDDY电流减速器
公开(公告)号：JP2008141814A
公开(公告)日：2008-06-19
申请号：JP2006323336
申请日：2006-11-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YAMAGUCHI HIROYUKI , MIYAHARA MITSUO , TASAKA MASAHIRA , IMANISHI KENJI , NOGUCHI YASUTAKA , SAITO AKIRA , TANI YASUTOKU , RIYUUDO HIROMI
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide an eddy current speed reducer having its thrust load to a rotating shaft reduced without impairing a braking force.
SOLUTION: The eddy current speed reducer 1 includes a disk-shaped rotor 3 having a support body connected to the rotary shaft 2 and a braking force operation part, and a magnetic force generating means 4 fixed to the non-rotary part, wherein the magnetic force generating means 4 is brought closer to the braking force operation part at braking to generate a braking force by eddy current. The braking force operation part is constituted of a member 3a made of a ferromagnetic body and a member 3b made of a conductor body other than the ferromagnetic body, wherein the member 3a made of the ferromagnetic body and the member 3b made of the conductor body other than the ferromagnetic body are disposed on a surface opposite to the magnetic force generating means 4.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种涡轮减速器，其具有减小转动轴的推力负载而不损害制动力。涡流减速器1包括具有连接到旋转轴2的支撑体的盘形转子3和制动力操作部，以及固定到非旋转部的磁力产生装置4，其中磁力产生装置4在制动时靠近制动力操作部分，以通过涡流产生制动力。制动力操作部由铁磁体构成的构件3a和由铁磁体以外的导体构成的构件3b构成，其中由铁磁体构成的构件3a和由导体体构成的构件3b 比铁磁体设置在与磁力产生装置4相对的表面上。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2004222405A Ferromagnetic plate and eddy current type reduction gear 审中-公开
公开(公告)号：JP2004222405A
公开(公告)日：2004-08-05
申请号：JP2003006209
申请日：2003-01-14
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANI YASUTOKU , IMANISHI KENJI
IPC分类号： H02K49/10 , H02K49/02
摘要： PROBLEM TO BE SOLVED: To provide a ferromagnetic plate and an eddy current type reduction gear in which a brake torque can be enhanced especially at the time of braking.
SOLUTION: The ferromagnetic plate has pole pieces 4 arranged oppositely to the permanent magnets 5, 5a and 5b of an eddy current type reduction gear. Among end faces 4b and 4c directed in the forward rotational direction, a recess 4a continuous to the inner circumferential surface 4d is provided in the end face 4b on the backward rotational direction. The pole piece 4 is extended such that the remaining part of the recess 4a is located on the backward rotational side as compared with the facing permanent magnets 5, 5a and 5b. The plate section of the side faces 4f and 4f' at the recess 4a forming section along the rotational direction has a thickness t set to cause magnetic saturation when a short circuit magnetic circuit is formed at the time of non-braking. Brake torque can be enhanced at the time of braking by reducing the density of magnetic lines of force directed from the permanent magnet through the pole piece toward the rotor. Furthermore, loss torque can be reduced at time of non-braking because magnetic leakage directed from the permanent magnet through the support toward the rotor is absorbed on the upper surface at the part of the recess.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2004140945A Ferromagnetic plate and eddy-current speed reducer equipped therewith 有权
公开(公告)号：JP2004140945A
公开(公告)日：2004-05-13
申请号：JP2002304522
申请日：2002-10-18
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANI YASUTOKU , IMANISHI KENJI , MIYAHARA MITSUO
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide a ferromagnetic plate for the enhancement of braking torque and an eddy-current speed reducer equipped therewith.
SOLUTION: A pole piece 4 is disposed opposite to the permanent magnets 5 of the eddy-current speed reducer. The pole piece is so formed that, when viewed from above its principal surface, its projected shape is widened on the front side of rotation and on the rear side of rotation. Thus, even if magnetic lines of force dragged by the rotation of a rotor are concentrated on the front side of rotation of the pole pieces, magnetic saturation does not occur and the magnetic lines of force flow to the rotor in rotation with stability. Further, the inflow of magnetic lines of force from the rotor is stabilized, and braking torque is enhanced.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2004048963A Eddy-current speed reducer and permanent magnet used in it 审中-公开
公开(公告)号：JP2004048963A
公开(公告)日：2004-02-12
申请号：JP2002205939
申请日：2002-07-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANI YASUTOKU , IMANISHI KENJI , NOGUCHI YASUTAKA , FUKUI KUNIHIRO
IPC分类号： H02K49/02 , H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide an eddy-current speed reducer wherein the height of permanent magnets and the gap between the permanent magnets and a switch plate are defined and thereby magnetic flux which escapes from the switch plate to cases before and in the direction of rotation of a rotor is suppressed when braking is applied for the enhancement of braking torque and permanent magnets for use in the speed reducer.
SOLUTION: The eddy-current is characterized in that the gap between the outer circumferential surfaces 11c of the permanent magnets 11 and the inner circumferential surface of a switch plate 3 placed opposite to the outer circumferential surfaces 11c is made narrower at the central portion 11a than at at least part of the edge portions 11b of the permanent magnet 11 or the switch plate 3, otherwise, the height of the permanent magnets 11 is made higher at the central portion 11a than at at least part of the edge portions 11b.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2004072972A Eddy current speed reducer and method of releasing its braking 有权
公开(公告)号：JP2004072972A
公开(公告)日：2004-03-04
申请号：JP2002232850
申请日：2002-08-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NOGUCHI YASUTAKA , IMANISHI KENJI , TASAKA MASAHIRA , TANI YASUTOKU
IPC分类号： H02K49/10
摘要： PROBLEM TO BE SOLVED: To provide a small, lightweight eddy current speed reducer by reducing power required for changing over to a non-braking state, and by making apparatus compact.
SOLUTION: This eddy current speed reducer comprises a braking disc mounted on a rotating shaft, a guiding cylinder supported by non-rotating portions, holding rings capable of moving forward and backward in the direction of the rotating shaft, and a plurality of permanent magnets with the direction of the magnetic poles of the neighboring magnets in the circumferential direction arranged inversely to each other. This small, lightweight eddy current speed reducer is characterized by the structure that magnet supporting plates placed on each permanent magnet are tiltably mounted on the holding rings, and that the holding rings divided into two or more pieces in the circumferential direction are also made inclinable in the direction of the rotating shaft.
COPYRIGHT: (C)2004,JPO

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