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公开(公告)号：US08304955B2
公开(公告)日：2012-11-06
申请号：US12157886
申请日：2008-06-13
CPC分类号： H02K3/525 , H02K1/145 , H02K5/1672 , H02K37/14
摘要： A PM stepping motor includes: a stator assembly composed of two stator units which are axially coupled to each other with a molding resin material, and each of which includes: inner and outer yokes each having a plurality of pole teeth; a bobbin including inner and outer flanges; and a coil wound around the bobbin, thus providing two such inner yokes, outer yokes, bobbins and coils in total; a rotor assembly which includes a shaft and a magnet, and which is rotatably disposed in the hollow of the stator assembly; and two bearings to rotatably support the shaft of the rotor assembly, wherein the two bobbins are formed of the molding resin material to be consolidated with the two inner yokes, and wherein a plurality of protrusions are formed of the molding resin material to extend integrally from the outer flange of each of the two bobbins.
摘要翻译： PM步进电机包括：定子组件，其由两个定子单元构成，两个定子单元通过模制树脂材料彼此轴向耦合，并且每个定子单元包括：内和外轭，每个具有多个极齿; 包括内外凸缘的线轴; 线圈缠绕在线轴上，从而总共提供两个这样的内轭铁，外轭铁，线轴和线圈; 转子组件，其包括轴和磁体，并且其可旋转地设置在定子组件的中空部中; 以及两个用于可旋转地支撑转子组件的轴的轴承，其中两个线轴由与两个内轭铁固定的模制树脂材料形成，并且其中多个突起由模制树脂材料形成，以从 两个线轴中的每一个的外凸缘。
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公开(公告)号：US07825556B2
公开(公告)日：2010-11-02
申请号：US11979818
申请日：2007-11-08
IPC分类号： H02K37/12
CPC分类号： H02K5/1672 , H02K21/145 , H02K37/14
摘要： A stepping motor includes: a stator which includes a cup-like first (outer) yoke having a plurality of notches formed at its bottom plate, a second (inner) yoke, and a bobbin having a coil wound therearound and housed in the annular hollow space formed by the first and second yokes; and a pair of bearings each of which includes a hollow-cylindrical main body and a flange structure having a plurality of protrusions, and is attached to the stator such that the protrusions engage with the notches of the first yoke thereby preventing the bearing from rotating relative to the first yoke, and such that the protrusions make contact with a flange of the bobbin thereby precisely positioning the bearing relative to the first yoke with respect to the axial direction, which prohibits any portions of the bearing from protruding axially outwardly beyond the bottom plate of the first yoke.
摘要翻译： 步进电动机包括：定子，其包括杯形的第一（外）轭，其具有形成在其底板上的多个凹口，第二（内）轭和绕线圈，线圈缠绕在其周围并容纳在环形空心 由第一和第二轭形成的空间; 以及一对轴承，每个轴承包括中空圆柱形主体和具有多个突起的凸缘结构，并且附接到定子，使得突起与第一磁轭的凹口接合，从而防止轴承相对旋转 并且使得突起与筒管的凸缘接触，从而相对于轴向方向相对于第一轭精确地定位轴承，这阻止了轴承的任何部分轴向向外突出超出底板 的第一个轭。
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公开(公告)号：US07635931B2
公开(公告)日：2009-12-22
申请号：US12000415
申请日：2007-12-12
IPC分类号： H02K37/14
摘要： In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying their respective ranges: 0.35≦Lm/Ls≦0.45; 0.77≦d/2Lm≦1.10; and d/D≦0.45, where Lm is the axial dimension of the magnet, Ls is the axial dimension of the stator, d is the outer diameter of the magnet, and D is the outer diameter of the stator, whereby a space for accommodating a sufficient number of coil turns is secured maximally in the stator, and the inertia and the cogging torque of the rotor are reduced maximally, which leads to producing the highest possible torque at a high rotation speed range required.
摘要翻译： 在包括两个定子和具有两个磁体的转子的步进电机中，三维关系，具体地Lm / Ls的关系，d / 2Lm的另一关系和另一个关系d / D在最佳确定的同时满足它们各自的范围： 0.35 <= Lm / Ls <= 0.45; 0.77 <= d / 2Lm <= 1.10; 和d / D <= 0.45，其中Lm是磁体的轴向尺寸，Ls是定子的轴向尺寸，d是磁体的外径，D是定子的外径， 在定子中最大限度地确保容纳足够数量的线圈，并且最大限度地减小转子的惯性和齿槽转矩，这导致在所需的高转速范围内产生最高可能的扭矩。
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公开(公告)号：US20080150399A1
公开(公告)日：2008-06-26
申请号：US12000415
申请日：2007-12-12
摘要： In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying their respective ranges: 0.35≦Lm/Ls≦0.45; 0.77≦d/2Lm≦1.10; and d/D≦0.45, where Lm is the axial dimension of the magnet, Ls is the axial dimension of the stator, d is the outer diameter of the magnet, and D is the outer diameter of the stator, whereby a space for accommodating a sufficient number of coil turns is secured maximally in the stator, and the inertia and the cogging torque of the rotor are reduced maximally, which leads to producing the highest possible torque at a high rotation speed range required.
摘要翻译： 在包括两个定子和具有两个磁体的转子的步进电机中，三维关系，具体地Lm / Ls的关系，d / 2Lm的另一关系和另一个关系d / D在最佳确定的同时满足它们各自的范围： 0.35 <= Lm / Ls <= 0.45; 0.77 <= d / 2Lm <= 1.10; 和d / D <= 0.45，其中Lm是磁体的轴向尺寸，Ls是定子的轴向尺寸，d是磁体的外径，D是定子的外径， 在定子中最大限度地确保容纳足够数量的线圈，并且最大限度地减小转子的惯性和齿槽转矩，这导致在所需的高转速范围内产生最高可能的扭矩。
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公开(公告)号：US20090066196A1
公开(公告)日：2009-03-12
申请号：US11979818
申请日：2007-11-08
IPC分类号： H02K37/12
CPC分类号： H02K5/1672 , H02K21/145 , H02K37/14
摘要： A stepping motor includes: a stator which includes a cup-like first (outer) yoke having a plurality of notches formed at its bottom plate, a second (inner) yoke, and a bobbin having a coil wound therearound and housed in the annular hollow space formed by the first and second yokes; and a pair of bearings each of which includes a hollow-cylindrical main body and a flange structure having a plurality of protrusions, and is attached to the stator such that the protrusions engage with the notches of the first yoke thereby preventing the bearing from rotating relative to the first yoke, and such that the protrusions make contact with a flange of the bobbin thereby precisely positioning the bearing relative to the first yoke with respect to the axial direction, which prohibits any portions of the bearing from protruding axially outwardly beyond the bottom plate of the first yoke.
摘要翻译： 步进电动机包括：定子，其包括杯形的第一（外）轭，其具有形成在其底板上的多个凹口，第二（内）轭和绕线圈，线圈缠绕在其周围并容纳在环形空心 由第一和第二轭形成的空间; 以及一对轴承，每个轴承包括中空圆柱形主体和具有多个突起的凸缘结构，并且附接到定子，使得突起与第一磁轭的凹口接合，从而防止轴承相对旋转 并且使得突起与筒管的凸缘接触，从而相对于轴向方向相对于第一轭精确地定位轴承，这阻止了轴承的任何部分轴向向外突出超出底板 的第一个轭。
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公开(公告)号：US20080315699A1
公开(公告)日：2008-12-25
申请号：US12157886
申请日：2008-06-13
CPC分类号： H02K3/525 , H02K1/145 , H02K5/1672 , H02K37/14
摘要： A PM stepping motor includes: a stator assembly composed of two stator units which are axially coupled to each other with a molding resin material, and each of which includes: inner and outer yokes each having a plurality of pole teeth; a bobbin including inner and outer flanges; and a coil wound around the bobbin, thus providing two such inner yokes, outer yokes, bobbins and coils in total; a rotor assembly which includes a shaft and a magnet, and which is rotatably disposed in the hollow of the stator assembly; and two bearings to rotatably support the shaft of the rotor assembly, wherein the two bobbins are formed of the molding resin material to be consolidated with the two inner yokes, and wherein a plurality of protrusions are formed of the molding resin material to extend integrally from the outer flange of each of the two bobbins.
摘要翻译： PM步进电机包括：定子组件，其由两个定子单元组成，两个定子单元通过模制树脂材料彼此轴向耦合，并且每个定子单元包括：内和外轭，每个具有多个极齿; 包括内外凸缘的线轴; 线圈缠绕在线轴上，从而总共提供两个这样的内轭铁，外轭铁，线轴和线圈; 转子组件，其包括轴和磁体，并且其可旋转地设置在定子组件的中空部中; 以及两个用于可旋转地支撑转子组件的轴的轴承，其中两个线轴由与两个内轭铁固定的模制树脂材料形成，并且其中多个突起由模制树脂材料形成，以从 两个线轴中的每一个的外凸缘。
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公开(公告)号：US07642689B2
公开(公告)日：2010-01-05
申请号：US12214153
申请日：2008-06-17
IPC分类号： H02K1/27
CPC分类号： H02K1/2733 , H02K1/28
摘要： A rotor includes: a magnet having a circular cylinder shape and having a hole formed through its axial center, wherein the hole has in axial cross section a regular polygonal shape having flat portions and angle portions, and wherein a recess having a truncated cone shape is disposed at an axial end of the magnet such that the recess has its maximum diameter portion located at the axial end and has its minimum diameter portion communicating with the hole; and a shaft fitted in the hole of the magnet, wherein the outer circumference of the shaft makes contact with the flat portions of the hole of the magnet thereby forming a plurality of gaps between the outer circumference of the shaft and the angle portions of the hole of the magnet, and adhesive is filled in the gaps.
摘要翻译： 转子包括：具有圆筒形状并且具有通过其轴向中心形成的孔的磁体，其中所述孔的轴向横截面具有平坦部分和角部分的正多边形，并且其中具有截头圆锥形状的凹部是 设置在所述磁体的轴向端部处，使得所述凹部具有位于所述轴向端部的最大直径部分，并且其最小直径部分与所述孔连通; 以及安装在所述磁体的孔中的轴，其中所述轴的外周与所述磁体的孔的平坦部接触，从而在所述轴的外周与所述孔的角部之间形成多个间隙 的磁体，并且粘合剂填充在间隙中。
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8.发明申请Small diameter stepping motor, bobbin used therein and manufacturing method thereof 有权小直径步进电动机，使用的筒管及其制造方法公开(公告)号：US20080252181A1
公开(公告)日：2008-10-16
申请号：US12081085
申请日：2008-04-10
CPC分类号： H01F5/04 , H01F5/02 , H02K3/525 , H02K37/14 , Y10T29/49002 , Y10T29/49009
摘要： In a small diameter stepping motor including two stator units each including a bobbin formed of an insulating material, each bobbin includes: a circular hollow cylinder portion having a winding; two flanges disposed respectively at the both ends of the cylinder portion; and a terminal structure disposed at one of the two flanges and including two terminal blocks and a pair of electrical contact members at which the lead-out lines of the winding are terminated, wherein the two terminal blocks are circumferentially shifted in position from each other with respect to the cylinder portion axis extend axially outwardly, and the terminal blocks of one bobbin intermesh with the terminal blocks of the other bobbin such that the terminal blocks of the one bobbin overhang a part of the winding wound on the other bobbin and vice versa when the two stator units are coupled to each other.
摘要翻译： 在包括两个定子单元的小直径步进电机中，每个定子单元包括由绝缘材料形成的线轴，每个线轴包括：具有绕组的圆形中空圆筒部分; 两个凸缘分别设置在气缸部分的两端; 以及设置在所述两个凸缘中的一个上的端子结构，并且包括两个端子块和一对电接触构件，所述绕组的引出线终止于所述一对电接触构件，其中，所述两个端子块在位置上沿周向移位， 圆筒部分轴线相对于轴向向外延伸，并且一个筒管的端子块与另一个筒管的端子块相互啮合，使得一个筒管的端子块悬挂在缠绕在另一个筒管上的卷绕部分上，反之亦然， 两个定子单元彼此连接。
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公开(公告)号：US20090001826A1
公开(公告)日：2009-01-01
申请号：US12214153
申请日：2008-06-17
IPC分类号： H02K15/03
CPC分类号： H02K1/2733 , H02K1/28
摘要： A rotor includes: a magnet having a circular cylinder shape and having a hole formed through its axial center, wherein the hole has in axial cross section a regular polygonal shape having flat portions and angle portions, and wherein a recess having a truncated cone shape is disposed at an axial end of the magnet such that the recess has its maximum diameter portion located at the axial end and has its minimum diameter portion communicating with the hole; and a shaft fitted in the hole of the magnet, wherein the outer circumference of the shaft makes contact with the flat portions of the hole of the magnet thereby forming a plurality of gaps between the outer circumference of the shaft and the angle portions of the hole of the magnet, and adhesive is filled in the gaps.
摘要翻译： 转子包括：具有圆筒形状并且具有通过其轴向中心形成的孔的磁体，其中所述孔的轴向横截面具有平坦部分和角部分的正多边形，并且其中具有截头圆锥形状的凹部是 设置在所述磁体的轴向端部处，使得所述凹部具有位于所述轴向端部的最大直径部分，并且其最小直径部分与所述孔连通; 以及安装在所述磁体的孔中的轴，其中所述轴的外周与所述磁体的孔的平坦部接触，从而在所述轴的外周与所述孔的角部之间形成多个间隙 的磁体，并且粘合剂填充在间隙中。
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10.发明授权Small diameter stepping motor, bobbin used therein and manufacturing method thereof 有权小直径步进电动机，使用的筒管及其制造方法公开(公告)号：US07990000B2
公开(公告)日：2011-08-02
申请号：US12081085
申请日：2008-04-10
IPC分类号： H02K11/00
CPC分类号： H01F5/04 , H01F5/02 , H02K3/525 , H02K37/14 , Y10T29/49002 , Y10T29/49009
摘要： In a small diameter stepping motor including two stator units each including a bobbin formed of an insulating material, each bobbin includes: a circular hollow cylinder portion having a winding; two flanges disposed respectively at the both ends of the cylinder portion; and a terminal structure disposed at one of the two flanges and including two terminal blocks and a pair of electrical contact members at which the lead-out lines of the winding are terminated, wherein the two terminal blocks are circumferentially shifted in position from each other with respect to the cylinder portion axis extend axially outwardly, and the terminal blocks of one bobbin intermesh with the terminal blocks of the other bobbin such that the terminal blocks of the one bobbin overhang a part of the winding wound on the other bobbin and vice versa when the two stator units are coupled to each other.
摘要翻译： 在包括两个定子单元的小直径步进电机中，每个定子单元包括由绝缘材料形成的线轴，每个线轴包括：具有绕组的圆形中空圆筒部分; 两个凸缘分别设置在气缸部分的两端; 以及设置在所述两个凸缘中的一个上的端子结构，并且包括两个端子块和一对电接触构件，所述绕组的引出线终止于所述一对电接触构件，其中，所述两个端子块在位置上沿周向移位， 圆筒部分轴线相对于轴向向外延伸，并且一个筒管的端子块与另一个筒管的端子块相互啮合，使得一个筒管的端子块悬挂在缠绕在另一个筒管上的卷绕部分上，反之亦然， 两个定子单元彼此连接。
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