公开(公告)号：US5036319A

公开(公告)日：1991-07-30

申请号：US632627

申请日：1990-12-26

申请人： Manabu Shiraki ,  Osami Miyao ,  Shoji Fujisawa ,  Shunji Kawashima

发明人： Manabu Shiraki ,  Osami Miyao ,  Shoji Fujisawa ,  Shunji Kawashima

IPC分类号： G01D5/14 ,  G01D5/16 ,  G01D5/245 ,  H03M1/30

CPC分类号： G01D5/145 ,  G01D5/2451 ,  H03M1/30

摘要： An magnetic encoder includes a multipolar magnetic body having a row of alternate North and South poles of equal widths, and a magnetoresistive element diposed in confrontation to the multipolar magnetic body. The magnetoresistive element includes at least one A phase magnetoresistive element member and at least one B phase magnetoresisitve element disposed in juxtaposition over ##EQU1## where n is an integer greater than or equal to 1, and .lambda. is a width of each individual pole of the multiplar magnetic body. Each of the A phase magnetoresistive element members and the B phase magnetoresistive element member has a group of series connected linear conductors arranged side-by-side into a comb-like shape. The A phase magnetoresistive element member extends over ##EQU2## and the B phase magnetoresistive element member is out of phase with the A phase magnetoresistive element member by ##EQU3##

摘要翻译： 磁编码器包括具有相等宽度的交替的北极和南极的一行的多极磁体，以及与多极磁体对抗的磁阻元件。 磁阻元件包括至少一个A相磁阻元件和至少一个B相磁致伸缩元件，其以n为大于或等于1的整数设置，并且λ是每个单独的极的宽度 多磁体。 A相磁阻元件和B相磁阻元件各自具有并排配置成梳状形状的一组串联连接的线状导体。 A相磁阻元件构件通过延伸并且B相磁阻元件与A相磁阻元件构件异相，通过

公开(公告)号：US06573623B2

公开(公告)日：2003-06-03

申请号：US09886050

申请日：2001-06-22

申请人： Takaaki Tsuboi ,  Shoji Fujisawa ,  Masaki Ohno

发明人： Takaaki Tsuboi ,  Shoji Fujisawa ,  Masaki Ohno

IPC分类号： H02K4100

CPC分类号： H02K41/031 ,  H02K29/08

摘要： A sliding means with built-in moving-magnet linear is disclosed, which makes it possible to sense accurately a table position with a magnetic sensor element. To this end, a magnetic flux pattern is rectified outside any one N-pole of forward and aft end poles of a field magnet. Position of the table is monitored with a magnetic sensor element arranged on the bed in opposition to the field magnet. Arranged outside the end pole of the field magnet is an auxiliary magnet unlike in polarity and made as small as possible in effect on propulsion exerted on the table. The auxiliary magnet is to rectify the magnetic flux pattern outside the end pole of the field magnet to the same distribution pattern as found at a boundary between the adjacent poles opposite in polarity in the field magnet, thus making it possible to identify the accurate positions of the forward and aft end pole of the field magnet.

摘要翻译： 公开了一种具有内置的移动磁铁线性的滑动装置，这使得可以用磁性传感器元件精确地检测工作台位置。 为此，在场磁铁的前端和后端极的任何一个N极之外将磁通量图形整流。 使用布置在床上的磁性传感器元件与场磁体相对地监视台的位置。 排列在磁场磁体的端极之外的是辅助磁体，不像极性那样，并且尽可能小地对推动力施加在工作台上。 辅助磁体是将励磁磁极端极之外的磁通图案与现场磁铁极性相反的相邻极点之间的边界处发现相同的分布图，从而可以识别出磁场磁体的准确位置 场磁体的前端和后端极。

公开(公告)号：US06734583B2

公开(公告)日：2004-05-11

申请号：US09931850

申请日：2001-08-20

申请人： Shoji Fujisawa ,  Tsutomu Togashi

发明人： Shoji Fujisawa ,  Tsutomu Togashi

IPC分类号： H02K4100

CPC分类号： F16C29/008 ,  H02K41/031

摘要： A slider unit having built in a moving-coil linear motor ensuring high propulsion, is kept slim in overall height. A moving-coil assembly is made slim, with high stiffness, and is composed of an iron core of platy-configuration, and at least one set of three-phase armature coils wound around the iron core in the form of flat rectangular configuration in a plane intersecting the sliding direction. Comparatively more coil sides of the armature coils contribute to high propulsion. Like poles on either field magnet are placed in opposition to each other across the air gap, whereby the magnetic attraction is cancelled to reduce the load on the linear motion guide unit.

摘要翻译： 内置有确保高推进力的动圈式线性马达的滑块单元保持在整体高度。 移动线圈组件被制造成具有高刚度的薄板，并且由扁平结构的铁芯和至少一组以扁平矩形构造的铁芯缠绕的三相电枢线圈组成， 平面与滑动方向相交。 电枢线圈的相对较多的线圈侧面有助于高推进。 类似地，磁场上的磁极相对于气隙彼此相对放置，从而消除磁吸引力以减小线性运动引导单元上的负载。

公开(公告)号：US06917126B2

公开(公告)日：2005-07-12

申请号：US09871730

申请日：2001-06-04

申请人： Takaaki Tsuboi ,  Shoji Fujisawa ,  Masaki Ohno

发明人： Takaaki Tsuboi ,  Shoji Fujisawa ,  Masaki Ohno

IPC分类号： B23Q5/28 ,  H02K41/02 ,  H02K41/03 ,  H02K9/19 ,  H02K41/00

CPC分类号： H02K41/031

摘要： A sliding means with built-in moving-magnet linear motor is provided, realizing high-speed operation and much response ability of a table to a stationary bed, and also accurate position control of the table to the bed. With the sliding means of this invention, armature windings carry a three-phase current while a driving circuit is transferred to the external driver to make the bed slim in construction. Thus, the sliding means is reduced in overall height. A field magnet of rare earth permanent magnet is effective in raising flux density, thereby providing high propulsion for the table. An encoder to monitor a position of the table is an optical encoder having an optical linear scale, which contributes to improvement in accurate monitoring. The construction in which the armature windings connected to cords, lines, and so on are placed on the stator side has no fear of causing dust and dirt, thus realizing clean environment.

摘要翻译： 提供内置移动磁铁线性电机的滑动装置，实现了桌子对固定床的高速运转和响应能力，还可以将工作台的位置控制到床上。 利用本发明的滑动装置，电枢绕组承载三相电流，同时驱动电路被传送到外部驱动器以使床体结构变薄。 因此，滑动装置整体高度减小。 稀土永磁体的场磁体有效地提高磁通密度，从而为表提供高推进力。 用于监视表的位置的编码器是具有光学线性刻度的光学编码器，这有助于精确监视的改进。 将连接到电线，线等的电枢绕组放置在定子侧上的结构不会产生灰尘和灰尘，从而实现清洁的环境。

公开(公告)号：US06348746B1

公开(公告)日：2002-02-19

申请号：US09556629

申请日：2000-04-21

申请人： Shoji Fujisawa ,  Eiji Ida

发明人： Shoji Fujisawa ,  Eiji Ida

IPC分类号： H02K4102

CPC分类号： H02K41/031

摘要： Disclosed a slider unit having built-in a moving-coil linear motor made compact in construction by the provision of an improved magnet yoke for supporting field magnets, which is made in a slim construction, nevertheless very high in stiffness. The magnet yoke is comprised of a pair of confronting webs and a connecting web to connect integrally the confronting webs to each other. The magnet yoke of such integral construction helps ensure the overall high stiffness despite the webs being made thin. Thus, the magnet yoke may be made considerably slim, compared with the prior magnet yoke in which the confronting webs and connecting web are produced individually. A moving-coil assembly is installed to a table movable in a sliding manner through linear motion guide units with respect to a stationary bed.

摘要翻译： 公开了一种具有内置的动圈式线性电动机的滑块单元，其通过提供用于支撑场地磁体的改进的磁轭来制造结构紧凑的结构，该磁轭用于制造成薄型结构，但刚度非常高。 磁轭由一对相对的腹板和连接腹板组成，以将相对的腹板彼此一体地连接起来。 这种整体结构的磁轭有助于确保整个高刚度，尽管幅材变薄。 因此，与现有的磁轭相比，磁轭可以相当薄，其中单独制造相​​对的腹板和连接腹板。 移动线圈组件安装在桌面上，该桌子可以通过相对于固定床的直线运动导向单元以滑动的方式运动。

公开(公告)号：US5825104A

公开(公告)日：1998-10-20

申请号：US805351

申请日：1997-02-24

申请人： Takuo Kondo ,  Shoji Fujisawa ,  Norimitsu Kitade

发明人： Takuo Kondo ,  Shoji Fujisawa ,  Norimitsu Kitade

IPC分类号： F16C29/06 ,  H02K41/02 ,  H02K41/03

CPC分类号： H02K41/03

摘要： The present invention discloses a compact and inexpensive linear motor table. The above effects of the present invention are achieved by allowing at least one of either the bed or table to also serve as the yoke, or the magnetic circuit portion, of a linear electromagnetic actuator in addition to its inherent function.

摘要翻译： 本发明公开了一种紧凑且廉价的线性马达工作台。 本发明的上述效果除了其固有功能之外，还允许床或台中的至少一个也用作线性电磁致动器的轭或磁路部分。