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1. 发明申请

WO2021247413A1 MINIATURE STEP MOTOR WITH INDEPENDENT PHASE STATORS 审中-公开
公开(公告)号：WO2021247413A1
公开(公告)日：2021-12-09
申请号：PCT/US2021/034843
申请日：2021-05-28
申请人： LIN ENGINEERING, INC. , LIN, Ted, T.
发明人： LIN, Ted, T.
IPC分类号： H02K37/04 , H02K1/27 , H02K1/148 , H02K15/02 , H02K15/062 , H02K15/16 , H02K19/10 , H02K2213/03 , H02K37/14 , H02K5/15
摘要： A miniature step motor (11) has a permanent magnet rotor (13, 81, 91) and a hybrid stator assembly (15). The rotor has one or more rotor sections or pieces (13, 85-86, 95-97) with a pair of magnetic poles on opposed circumferential surfaces (23, 84, 94) of each piece. The stator assembly, with an inner diameter to receive the rotor, is formed from a stack of bipolar phase-stators (16A, 16B) positioned in different axial planes, each phase-stator interacting with a rotor section via a two-dimensional magnetic flux path independently of every other phase-stator in the stack. The rotor section (s) and the phase-stators have rotor-stator rotational offsets at specified angles 180°/N relative to each other about the axial shaft, where N is the number of motor phases. The phase-stators can be mutually offset from one another, or the rotor sections can be mutually offset.

2. 发明申请

WO2022020226A1 VARIABLE RELUCTANCE STEP MOTOR HAVING ENHANCED HOLDING TORQUE 审中-公开
公开(公告)号：WO2022020226A1
公开(公告)日：2022-01-27
申请号：PCT/US2021/042155
申请日：2021-07-19
申请人： LIN ENGINEERING, INC
发明人： LIN, Ted, T. , GAN, Jianjun
IPC分类号： H02K37/04 , H02K19/24 , H02K29/03 , H02P25/08
摘要： A variable reluctance stepper motor comprises a stator (11) and a rotor (41) that is rotatable relative to the stator. The stator comprises an annular outer yoke (20) with a set of circumferentially spaced stator poles (13) at equal angular intervals around the yoke extending radially inward from first portions of the yoke toward the rotor. Phase windings (31) are individually coiled around each of the respective stator poles. Multiple slots (17) are formed in an outer perimeter edge of the yoke at second portions thereof circumferentially situated between the first portions. A permanent magnet (19) is embedded within each slot with circumferentially directed magnetic (N-S) orientation of the respective permanent magnets. The remote placement of the magnets ensure that detent torque is kept to a minimum, while also increasing holding and dynamic torque levels.

3. 发明申请

WO2007011494A2 ACCURATE MICROSTEPPING MOTOR 审中-公开
标题翻译：精密微型电机
公开(公告)号：WO2007011494A2
公开(公告)日：2007-01-25
申请号：PCT/US2006/024468
申请日：2006-06-23
申请人： LIN ENGINEERING, INC. , BADGEROW, Richard, L. , LIN, Ted, T.
发明人： BADGEROW, Richard, L. , LIN, Ted, T.
IPC分类号： H02K37/14
CPC分类号： H02K37/18
摘要： A stepper motor (30; 41) includes a rotor (32; 43) having equally spaced rotor teeth (34; 45) defining a full step angle, and a stator (36; 47) with stator poles (38; 49) wound with coils that can be driven in a series of phases so as to magnetically interact with the rotor to produce stepping motion. The stator poles have teeth (40; 51) organized into two groups (40 1 , 4O 2 ) when there is an even number of stator teeth per pole, or into three groups (5I 1 ., 5 1 M, 5I 2 ) for an odd number of stator teeth per pole. The stator teeth have an average pitch (P 3 ) different from the rotor's tooth pitch, but the groups of stator teeth are also displaced relative to other groups by a specified offset angle (Ps/8, Ps/16) of one-half or one-quarter step to double the number of detent positions, and to displace such detent positions from full one-phase ON or two-phase ON positions.
摘要翻译：步进电动机（30; 41）包括转子（32; 43），其具有限定全阶梯角的等间隔的转子齿（34; 45）和定子（36; 47），定子极（38; 49）可以以一系列相位驱动的线圈，以便与转子磁性相互作用以产生步进运动。当每个极点有数量的定子齿时，定子极具有组织成两组（40,140,220）的两个组件（40; 51），或三个每个极的奇数个定子齿的组（5I 1 1，5 1 M，5I 2 2）。定子齿具有与转子齿距不同的平均间距（P 3> 3），但是定子齿组也相对于其它组移位指定的偏移角（Ps / 8，Ps / 16）的一半或四分之一步骤，使制动位置的数量翻倍，并将这种制动位置从完全一阶段开放或两阶段开放位置移位。

4. 发明申请

WO2022154945A1 4-STATOR-POLE STEP MOTOR WITH PASSIVE INTER-POLES 审中-公开
公开(公告)号：WO2022154945A1
公开(公告)日：2022-07-21
申请号：PCT/US2021/064379
申请日：2021-12-20
申请人： LIN ENGINEERING, INC.
发明人： LIN, Ted, T.
IPC分类号： H02K37/02 , H02K37/04 , H02K37/10 , H02K37/14
摘要： A two-phase bipolar step motor comprises a rotor (41) having a plurality of pairs of rotor poles (43) of alternating (N and S) magnetic polarity, and a stator (45) having four primary energizable stator poles (46-49) with conductive windings (55-58) around those primary stator poles and four passive inter-poles (467, 478, 489, 496) located uniformly between every adjacent pair of primary stator poles, the passive inter-poles lacking any conductive windings. Both 18° steppers with five pairs of rotor poles (Figs. 4-9) and 30° steppers with three pairs of rotor poles (Figs. 10-15) are provided. Also provided are both PM hybrid mix steppers with 2D magnetic flux paths (Figs. 4-6, 10-12) and hybrid steppers with 3D magnetic flux paths having an axial component (Figs. 7-9, 13-15). In each case, the overall lengths of the flux paths are substantially reduced from conventional designs resulting in improved motor efficiency.

5. 发明申请

WO2022051065A1 MINIATURE STEP MOTOR WITH SHOELESS STATOR AND PREWOUND BOBBINS 审中-公开
公开(公告)号：WO2022051065A1
公开(公告)日：2022-03-10
申请号：PCT/US2021/045353
申请日：2021-08-10
申请人： LIN ENGINEERING, INC. , LIN, Ted, T. , LIU, Jinping
发明人： LIN, Ted, T. , LIU, Jinping
IPC分类号： H02K37/02 , H02K37/04 , H02K37/08 , H02K37/10 , H02K37/12
摘要： A two-phase stepper motor (91) with a permanent magnet (PM) rotor (41, 93) and a modified hybrid-type stator (61, 92) is provided. The modified hybrid stator can be manufactured for smaller motor sizes because it employs shoeless, straight stator poles (64) without stator teeth and with bobbin coils (71) that are prewound outside the motor and easily inserted over each of the stator poles. Each bobbin may be an elongated continuous belt (73) of insulative material with a hollow interior that forms a sleeve (75) that fits around its corresponding stator pole (64). Conductive wire (79) wound around the sleeve forms the stator coils. Edges of the sleeve may have exterior flanges (77, 78) at radially inner and outer ends of the stator pole to hold windings in place and keep the sleeve from bowing outward.

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