公开(公告)号：US4558294A

公开(公告)日：1985-12-10

申请号：US601372

申请日：1984-04-17

Applicant: Keitaro Yamashita

Inventor： Keitaro Yamashita

IPC: H01F7/02 ,  H01F41/02

CPC classification number: H01F7/0268 ,  H01F41/028

Abstract: A magnet roll comprising a shaft having a polygonal cross section and a plurality of magnet blocks bonded to the shaft and to each other. At least one of the magnet blocks has mating means contacted with the corresponding mating means of the shaft, and an adjacent pair of the magnet blocks are bonded to each other in a positional relationship determined by mating means provided on the contacting surfaces of the adjacent blocks and by contact with the shaft surface. This magnet roll can be assembled very precisely without difficulty.

Abstract translation: 一种磁辊，包括具有多边形横截面的轴和多个粘结到轴上并彼此连接的磁块。 至少一个磁体块具有与轴的对应配合装置接触的配合装置，并且相邻的一对磁体块以由设置在相邻块的接触表面上的配合装置确定的位置关系彼此接合 并与轴表面接触。 该磁体辊可以非常精确地组装而没有困难。

公开(公告)号：US3581257A

公开(公告)日：1971-05-25

申请号：US3581257D

申请日：1969-10-29

Applicant: ELECTRONIC TRANSMISSION SYSTEM

Inventor： PRIESSNETZ EDMUND F

IPC: H01F7/02 ,  H04N1/08 ,  H01F7/20

CPC classification number: H04N1/0813 ,  H01F7/0268 ,  H04N1/08 ,  H04N1/0839 ,  H04N1/0847

Abstract: A magnetic holding drum particularly suitable for optical reproduction devices such as facsimile transmitters, which enables the copy to be held substantially flat over the surface of the drum while the drum is either rotated or optically scanned. The drum includes a plurality of spaced-apart, radially disposed elongated magnets on its cylindrical surface. A sliding holder which is slidably retained in grooves at each end of the drum is magnetically affixed at any desired position on the surface of the drum in order to maintain the copy flattened against the drum''s surface.

公开(公告)号：US3553832A

公开(公告)日：1971-01-12

申请号：US3553832D

申请日：1969-01-10

Applicant: WILHELM KNECHTEL

Inventor： KNECHTEL WILHELM

IPC: G03G15/09 ,  H01F7/02 ,  H01F7/06

CPC classification number: G03G15/0921 ,  H01F7/0268 ,  Y10T29/49075

Abstract: THE PRESENT INVENTION RELATES TO AN ELECTROSTATIC POWDER IMAGE PRINTING SYSTEM, MORE PARTICULARLY, TO A MAGNETIC CYLINDER FOR UNIFORMLY DISPENSING TONER POWDER IN A POWDER IMAGE FIXING DEVICE.

公开(公告)号：US11756730B2

公开(公告)日：2023-09-12

申请号：US18095192

申请日：2023-01-10

Applicant: Hirofusa Otsubo

Inventor： Hirofusa Otsubo

IPC: H01F41/02 ,  H01F7/02

CPC classification number: H01F41/0266 ,  H01F7/0268 ,  Y10T29/49075 ,  Y10T29/53417

Abstract: An apparatus for assembling a repelling magnet combination, comprising a first and second magnet, a first and second holding magnet, a first holding base with a first holding base first end, and a second holding base with a second holding base first end. The first and second holding magnets are positioned at the first and second holding base first ends, and the first and second magnets are magnetically attached to the first and second holding magnets respectively, with outward faces exhibiting like magnetic polarities. The first and second magnets are brought into contact by moving the first and second holding base first ends into close proximity, whereby the first and second holding magnets exert holding forces on the first and second magnets which overcome a repelling force generated therebetween, allowing a repelling force countering means, such as an adhesive, to bond the magnets together into a repelling magnet combination.

公开(公告)号：US09715960B2

公开(公告)日：2017-07-25

申请号：US14867700

申请日：2015-09-28

Applicant: INELXIA LIMITED

Inventor： Patrick Andre Chaizy

IPC: H01F7/02 ,  H01F7/04

CPC classification number: H01F7/0242 ,  H01F7/0252 ,  H01F7/0257 ,  H01F7/0263 ,  H01F7/0268 ,  H01F7/04

Abstract: A mechanism for fixing together first and second parts and comprising first and second guides provided respectively in or attached to the first and second parts. The mechanism further comprises first and second magnetic components coupled respectively to the first and second guides such that the first magnetic component is rotatable with the first guide and the first part, and the second magnetic component cannot rotate relative to the second guide, the magnetic components being moveable axially and rotationally with respect to each other and having magnetic poles oriented such that rotation of said first magnetic component causes relative axial movement of the magnetic components between a locking position in which one of the magnetic components straddles the two guides and an unlocking position in which it does not straddle the two guides.

公开(公告)号：US20160020009A1

公开(公告)日：2016-01-21

申请号：US14867700

申请日：2015-09-28

Applicant: INELXIA LIMITED

Inventor： Patrick Andre CHAIZY

IPC: H01F7/02

CPC classification number: H01F7/0242 ,  H01F7/0252 ,  H01F7/0257 ,  H01F7/0263 ,  H01F7/0268 ,  H01F7/04

Abstract: A mechanism for fixing together first and second parts and comprising first and second guides provided respectively in or attached to the first and second parts. The mechanism further comprises first and second magnetic components coupled respectively to the first and second guides such that the first magnetic component is rotatable with the first guide and the first part, and the second magnetic component cannot rotate relative to the second guide, the magnetic components being moveable axially and rotationally with respect to each other and having magnetic poles oriented such that rotation of said first magnetic component causes relative axial movement of the magnetic components between a locking position in which one of the magnetic components straddles the two guides and an unlocking position in which it does not straddle the two guides.

Abstract translation: 一种用于将第一和第二部件固定在一起并且包括分别设置在第一和第二部件中或附接到第一和第二部件的第一和第二引导件的机构。 该机构还包括分别连接到第一和第二引导件的第一和第二磁性部件，使得第一磁性部件可以与第一引导件和第一部件一起旋转，并且第二磁性部件不能相对于第二引导件旋转，磁性部件 可相对于彼此轴向和旋转地运动并且具有取向的磁极，使得所述第一磁性部件的旋转在磁性部件跨过两个引导件的锁定位置和解锁位置之间引起磁性部件的相对轴向移动 在其中不跨越两个指南。

公开(公告)号：US20150048707A1

公开(公告)日：2015-02-19

申请号：US14527066

申请日：2014-10-29

Applicant: HITACHI METALS, LTD.

Inventor： Nobuyuki HIRAI ,  Mitsutoshi Natsumeda

IPC: H01F1/057 ,  H02K1/27 ,  H02K21/14

CPC classification number: H01F1/057 ,  H01F1/0576 ,  H01F7/02 ,  H01F7/021 ,  H01F7/0268 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/028 ,  H02K1/2733 ,  H02K15/03 ,  H02K21/14 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: A method for producing a radially anisotropic ring magnet having at least one axial groove on the inner surface comprises using a die comprising a cylindrical, magnetic core, a magnetic sleeve having an axial ridge in alignment with the groove on the outer surface and disposed on an outer peripheral surface of the core, and an outer, cylindrical die member defining a cavity for forming the ring magnet with the magnetic sleeve, and compression-molding magnet powder charged into the cavity while applying a magnetic field in a radial direction, and a radially anisotropic ring magnet substantially having a composition of R-TM-B, wherein R is at least one of rare earth elements including Y, TM is at least one of transition metals, and B is boron, having at least one axial groove on the inner surface, and magnetized such that centerlines between magnetic poles do not overlap grooves.

Abstract translation: 一种用于制造在内表面上具有至少一个轴向凹槽的径向各向异性环形磁体的方法包括使用包括圆柱形磁芯的模具，具有与外表面上的凹槽对准的轴向脊的磁性套筒， 芯部的外周表面和外圆柱形模具构件，其限定用于用磁性套筒形成环形磁体的空腔，以及在径向施加磁场的同时将电荷加入到腔中的压缩成型磁体粉末， 基本上具有R-TM-B组成的各向异性环形磁体，其中R是至少一种包括Y的稀土元素，TM是过渡金属中的至少一种，B是硼，在内部具有至少一个轴向凹槽 表面和磁化，使得磁极之间的中心线不重叠凹槽。

公开(公告)号：US20100181859A1

公开(公告)日：2010-07-22

申请号：US12666245

申请日：2008-06-23

Applicant: Nobuyuki Hirai ,  Mitsutoshi Natsumeda

Inventor： Nobuyuki Hirai ,  Mitsutoshi Natsumeda

IPC: H02K21/14 ,  B22F3/02 ,  B22F3/03 ,  H01F7/02 ,  H02K15/03

CPC classification number: H01F1/057 ,  H01F1/0576 ,  H01F7/02 ,  H01F7/021 ,  H01F7/0268 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/028 ,  H02K1/2733 ,  H02K15/03 ,  H02K21/14 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: A method for producing a radially anisotropic ring magnet having at least one axial groove on the inner surface comprises using a die comprising a cylindrical, magnetic core, a magnetic sleeve having an axial ridge in alignment with the groove on the outer surface and disposed on an outer peripheral surface of the core, and an outer, cylindrical die member defining a cavity for forming the ring magnet with the magnetic sleeve, and compression-molding magnet powder charged into the cavity while applying a magnetic field in a radial direction, and a radially anisotropic ring magnet substantially having a composition of R-TM-B, wherein R is at least one of rare earth elements including Y, TM is at least one of transition metals, and B is boron, having at least one axial groove on the inner surface, and magnetized such that centerlines between magnetic poles do not overlap grooves.

Abstract translation: 一种用于制造在内表面上具有至少一个轴向凹槽的径向各向异性环形磁体的方法包括使用包括圆柱形磁芯的模具，具有与外表面上的凹槽对准的轴向脊的磁性套筒， 芯部的外周表面和外圆柱形模具构件，其限定用于用磁性套筒形成环形磁体的空腔，以及在径向施加磁场的同时将电荷加入到腔中的压缩成型磁体粉末， 基本上具有R-TM-B组成的各向异性环形磁体，其中R是至少一种包括Y的稀土元素，TM是过渡金属中的至少一种，B是硼，在内部具有至少一个轴向凹槽 表面和磁化，使得磁极之间的中心线不重叠凹槽。

公开(公告)号：US07626300B2

公开(公告)日：2009-12-01

申请号：US10589235

申请日：2005-06-20

Applicant: Koji Sato ,  Takehisa Minowa

Inventor： Koji Sato ,  Takehisa Minowa

IPC: H02K21/12

CPC classification number: H01F7/0268 ,  H01F1/0577 ,  H01F41/028 ,  H02K1/2733 ,  H02K15/03 ,  Y10T29/49009

Abstract: In a radially anisotropic sintered magnet of annular shape, the remanence in a radial direction of the annulus increases and decreases at intervals of 90° in a circumferential direction of the annulus, and the remanence in a radial direction over the entire circumference of the annulus has a maximum of 0.95-1.60 T and a minimum equal to 50-95% of the maximum. In a permanent magnet motor comprising a plurality of stator teeth, the radially anisotropic annular sintered magnet is incorporated after it is magnetized in 4n poles (wherein n is an integer of 1 to 20) so that the boundary between N and S poles is located within the range that is centered at the radial direction where the remanence exhibits the minimum and extends ±10° therefrom in a circumferential direction. The radially anisotropic annular sintered magnet undergoes neither fracture nor cracking during the sintering and aging/cooling steps even when it is shaped to a low inner/outer diameter ratio and has satisfactory magnetic properties. A permanent magnet motor comprising the radially anisotropic annular sintered magnet is inexpensive and of high performance.

Abstract translation: 在圆环状的径向各向异性烧结磁体中，环形空间的径向的剩磁在圆环的圆周方向以90°的间隔增大和减小，并且在环的整个圆周上的径向的剩余磁场具有 最大值为0.95-1.60 T，最小值为最大值的50-95％。 在包括多个定子齿的永磁电动机中，径向各向异性环形烧结磁体在4n极（其中n为1〜20的整数）被磁化后并入，使得N极和S极之间的边界位于 在径向方向上以剩余为最小的范围为中心，在圆周方向上延伸±10°。 径向各向异性环状烧结磁体在烧结和老化/冷却步骤期间既不会发生断裂也不起裂，即使成形为低内/外径比并且具有令人满意的磁特性。 包括径向各向异性环形烧结磁体的永磁电动机是廉价且高性能的。

公开(公告)号：US06984270B2

公开(公告)日：2006-01-10

申请号：US10284384

申请日：2002-10-31

Applicant: Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

Inventor： Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

IPC: H01F1/032

CPC classification number: H01F7/0268 ,  H01F41/0266 ,  H01F41/028

Abstract: A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30° or more from radial directions, the portion being contained in the magnet at a volume ratio in a range of 2% or more and 50% or less, and a portion oriented in radial directions or in directions tilted at an angle less than 30° from radial directions, the portion being the rest of the total volume of the magnet. The radial anisotropic sintered magnet has excellent magnet characteristics without occurrence of cracks in the steps of sintering and cooling for aging, even if the magnet has a shape of a small ratio between an inner diameter and an outer diameter.