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1. 发明公开

US20240372438A1 BRUSHLESS MOTOR HAVING AN OVERMOLDED ROTOR 审中-公开
公开(公告)号：US20240372438A1
公开(公告)日：2024-11-07
申请号：US18774557
申请日：2024-07-16
申请人： Black & Decker Inc.
发明人： John B. Fogle , Colin M. Crosby , David J. Smith , Merritt J. Tennison , Madhur M. Purohit
IPC分类号： H02K7/14 , B25F5/00 , H02K1/18 , H02K1/27 , H02K1/2791 , H02K1/28 , H02K5/16 , H02K7/02 , H02K7/08 , H02K9/06 , H02K11/215 , H02K11/33 , H02K29/08
CPC分类号： H02K7/145 , B25F5/00 , H02K1/27 , H02K1/2791 , H02K1/28 , H02K5/161 , H02K7/02 , H02K7/086 , H02K9/06 , H02K11/215 , H02K11/33 , H02K29/08 , H02K1/187 , H02K2203/03
摘要： An electric brushless DC motor is provided including a rotor assembly having a substantially-cylindrical metallic rotor body and at least one rotor magnet mounted on a surface of the rotor body, a stator assembly rotatably disposed relative to the rotor assembly, and a molded structure formed in contact with the rotor body. The molded structure includes a first mold portion in engagement with the rotor body that integrally forms a fan at or adjacent an axial end of the rotor body, and a second mold portion extending integrally from the first mold portion at least partially in engagement with an inner surface of the rotor body. The second mold portion engages two axial ends of the at least one magnet to axially support and retain the at least one magnet relative to the rotor body.

2. 发明申请

US20180241280A1 VIBRATION GENERATION DEVICE AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20180241280A1
公开(公告)日：2018-08-23
申请号：US15894612
申请日：2018-02-12
申请人： SEIKO INSTRUMENTS INC.
发明人： Akihiro IINO , Masao KASUGA
IPC分类号： H02K7/075 , H02K1/27 , H02K1/28 , G04B47/00
CPC分类号： H02K7/075 , B06B1/16 , G04B47/00 , H02K1/2793 , H02K1/28 , H02K5/1677 , H02K7/063 , H02K7/086 , H02K2205/03
摘要： This vibration generation device includes a rotor that is configured to be rotatable about a rotation axis, the rotor including a weight having a center of gravity that is eccentric with respect to the rotation axis; a shaft that is inserted into the rotor and configured to rotatably support the rotor; and a restriction part that is disposed further inward than the weight in a radial direction, the restriction part being attached to one end of the shaft, and the restriction part restricting a movement of the rotor in an axial direction.

3. 发明申请

US20180226863A1 STATOR FOR LINEAR STEPPER MOTOR AND METHOD FOR MAKING THE SAME 审中-公开
公开(公告)号：US20180226863A1
公开(公告)日：2018-08-09
申请号：US15871587
申请日：2018-01-15
申请人： Johnson Electric S.A.
发明人： Gerd Howack , Daniel Gerhard Barthel , Andreas Kurtz
IPC分类号： H02K15/02 , H02K3/28 , H02K41/03 , F16K31/04 , H02K7/08 , F16K31/06
CPC分类号： H02K15/022 , F16K31/04 , F16K31/06 , H02K3/28 , H02K7/085 , H02K7/086 , H02K15/10 , H02K37/24 , H02K41/03
摘要： A stator for a linear stepper motor includes four stator sheets and two stator windings. The four stator sheets are oriented towards each other, provided with bent polar arms, and have two inner stator sheets each defining a sheet recess and two outer stator sheets that are arranged in an offset manner. THE four stator sheets are joined into an integral coil body by a stator overmold. One of the stator windings is wound onto the coil body between one inner stator sheet and one outer stator sheet and connected with connector pins. The four stator sheets and the stator overmold including a stator flange and a pin socket are integrally formed such that radial envelope surfaces of the at least four stator sheets are free from the stator overmold. A stator recess inside the stator is arranged centrically in the stator overmold.

4. 发明申请

US20180072125A1 GUIDED MULTI-BAR LINKAGE ELECTRIC DRIVE SYSTEM 审中-公开
公开(公告)号：US20180072125A1
公开(公告)日：2018-03-15
申请号：US15701885
申请日：2017-09-12
申请人： Nucleus Scientific, Inc.
发明人： Ian W. Hunter , Timothy A. Fofonoff
IPC分类号： B60G17/015 , B60K7/00 , H02K7/00 , H02K7/08 , H02K1/27 , H02K1/28 , H02K16/04 , B60G1/00 , B60G7/00
CPC分类号： H02K16/04 , B60G1/00 , B60G3/01 , B60G3/20 , B60G3/207 , B60G7/001 , B60G17/015 , B60G2202/42 , B60G2204/182 , B60G2204/30 , B60G2204/421 , B60G2300/50 , B60G2500/30 , B60K7/0007 , B60K17/043 , B60K2007/003 , B60K2007/0038 , B60K2007/0092 , B60L2220/44 , B60L2220/46 , B60Y2200/91 , H02K1/2793 , H02K1/28 , H02K7/006 , H02K7/075 , H02K7/086 , H02K7/116 , H02K7/125 , H02K21/24 , H02K2201/18
摘要： An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a mechanical guide system supporting the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis; and a multi-bar linkage mechanism connecting to each of the first and third rotating assemblies and connecting the hub assembly to the mechanical guide system, wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and third rotating assembly with respect to each other.

5. 发明申请

US20170334649A1 Roller System Having Spaced Apart External Rotor Motor 审中-公开
公开(公告)号：US20170334649A1
公开(公告)日：2017-11-23
申请号：US15601630
申请日：2017-05-22
申请人： Hilmot LLC
发明人： Kamran Ramezani , Jason Ocain , Tony Hill , Dean Panas
IPC分类号： B65G13/07 , H02K7/08 , B65G39/12 , H02K7/10 , B65G13/04
CPC分类号： B65G13/07 , B65G13/04 , B65G39/12 , H02K7/086 , H02K7/1016
摘要： A roller system has a frame, a plurality of rollers (supported by the frame) forming a roller plane, and an external rotor motor (“motor”) spaced from the roller plane. As an external rotor motor, the motor has a stator and an external rotor radially outward of the stator to substantially circumscribe the stator. To kinetically couple the motor with the rollers, the system also has a transmission coupling coupled with the external rotor and at least one of the rollers. The transmission coupling and external rotor are configured so that rotation of the external rotor causes the at least one roller to rotate in response to a torque received through the transmission coupling.

6. 发明申请

US20170254357A1 FLUID DYNAMIC BEARING DEVICE, AND BEARING MEMBER AND SHAFT MEMBER FOR USE IN SAME 审中-公开
公开(公告)号：US20170254357A1
公开(公告)日：2017-09-07
申请号：US15506349
申请日：2015-08-25
申请人： NTN CORPORATION
发明人： Shinji KOMATSUBARA , Tetsuya KURIMURA , Yasuhiro YAMAMOTO
IPC分类号： F16C17/02 , H02K7/08 , H02K5/16 , F16C33/10 , F16C33/12
CPC分类号： F16C17/02 , F16C17/026 , F16C17/24 , F16C33/104 , F16C33/106 , F16C33/107 , F16C33/12 , F16C2240/30 , F16C2240/40 , F16C2360/46 , F16C2380/26 , H02K5/165 , H02K5/1675 , H02K7/086
摘要： A ratio W1/W2 of a circumferential width W1 of each of inclined hill portions G2 of a radial dynamic pressure generating portion G and a circumferential width W2 of each of inclined groove portions G3 is 1.2 or larger. And when an inner diameter of a bearing member is D, the circumferential width W2 of each of the inclined groove portions satisfies 0.2D≦W2≦0.4D.

7. 发明申请

US20170089354A1 ELECTRIC PUMP 审中-公开
公开(公告)号：US20170089354A1
公开(公告)日：2017-03-30
申请号：US15272992
申请日：2016-09-22
申请人： Hangzhou Sanhua Research Institute Co., Ltd.
发明人： Yongxiang Shi , Junfeng Bao , Hongmin Song
IPC分类号： F04D29/20 , F04D29/22 , F04D29/046 , F04D13/06
CPC分类号： F04D13/0606 , F04D29/041 , F04D29/628 , H02K1/278 , H02K5/128 , H02K5/1677 , H02K7/086 , H02K2205/03 , H02K2213/03
摘要： An electric pump is provided, which includes a housing, a shaft, a rotor assembly and a stop assembly. The shaft is fixed to the housing, the rotor assembly is rotatable about the shaft, and the rotor assembly is sleeved on the shaft. The stop assembly is configured to limit the position of the rotor assembly in the chamber. The stop assembly includes a first stop and a second stop, the first stop is fixed with respect to a second portion of the shaft, and the second stop is fixed with respect to a first portion of the shaft. No relative movement occurs between the stop assembly and the shaft, which reduces the abrasion between the stop assembly and the shaft resulted from friction, and facilitates improving a service life of the stop assembly.

8. 发明申请

US20160181891A1 BRUSHLESS MOTOR ASSEMBLY FOR A FASTENING TOOL 审中-公开
标题翻译：无刷电机组件用于紧急工具
公开(公告)号：US20160181891A1
公开(公告)日：2016-06-23
申请号：US14973090
申请日：2015-12-17
申请人： Black & Decker Inc.
发明人： John B. Fogle , Colin M. Crosby , David J. Smith , Merritt J. Tennison , Madhur M. Purohit
IPC分类号： H02K7/14 , H02K5/16 , H02K7/02 , H02K9/06 , H02K1/27 , H02K1/28
CPC分类号： H02K7/145 , B25F5/02 , H02K1/187 , H02K1/27 , H02K1/2786 , H02K1/28 , H02K5/161 , H02K7/02 , H02K7/086 , H02K9/06 , H02K11/0073 , H02K11/215 , H02K11/33 , H02K29/08 , H02K2203/03
摘要： An electric brushless DC motor is provided including an outer rotor assembly having a metallic rotor body, rotor magnets mounted within an inner surface of the rotor body, and a molded structure formed within the rotor body. The molded structure includes a main body formed on inner surface of the rotor body to securely cover and retain the rotor magnets on the inner surface of the rotor body, an axial fan formed at an end of the rotor body opposite the rotor magnets, and a sense magnet mount formed at approximately a radial center portion of the axial fan. Alternatively or additionally, the molded structure includes a radial member projecting inwardly from the main body towards a center of the outer rotor assembly, and a bearing support member having a substantially cylindrical shape in an axial direction of the outer rotor and supported by the at least one radial member.
摘要翻译：本发明提供一种电动无刷直流电动机，其包括具有金属转子体的外转子组件，安装在转子体的内表面内的转子磁体，以及形成在转子体内的模制结构。模制结构包括形成在转子体的内表面上的主体，用于将转子磁体牢固地覆盖并保持在转子体的内表面上，轴向风扇形成在与转子磁体相对的转子体的端部，感测磁体安装件形成在轴流风扇的大致中心部分。替代地或另外地，模制结构包括从主体朝向外转子组件的中心向内突出的径向构件，以及轴承支撑构件，其在外转子的轴向方向上具有基本上圆柱形的形状，并且至少被支撑一个径向构件。

9. 发明申请

US20160163350A1 SPINDLE MOTOR FOR DRIVING A HARD DISK DRIVE 有权
标题翻译：用于驱动硬盘驱动器的主轴电机
公开(公告)号：US20160163350A1
公开(公告)日：2016-06-09
申请号：US14959098
申请日：2015-12-04
申请人： Minebea Co., Ltd.
发明人： Tobias KIRCHMEIER
IPC分类号： G11B19/20 , H02K7/08
CPC分类号： G11B19/2036 , G11B17/0287 , G11B17/038 , G11B19/209 , H02K7/086
摘要： The invention relates to the spindle motor for driving a hard disk drive, comprising: a fixed engine component (10, 12, 16, 18), a rotary motor component (14) which is rotatably mounted relative to the stationary motor component by means of a fluid dynamic bearing system, a bearing gap (20) disposed between the fixed (10, 12, 16, 18) components and the rotary motor component (14) and filled with a bearing fluid, and has at least one open end, at least one sealing gap (34) for sealing the open end of the bearing gap (20), at least one cover cap (30) for covering the sealing gap (34), which is secured to the rotatable motor component (14), a disk clamp (44) for attachment of at least one magnetic storage disk (48) on the rotatable motor member (14) and an electromagnetic drive system (40, 42) to drive the rotatable motor member (14). According to the invention, the disk clamp (44, 156) is centered on a peripheral surface of the cover cap (30, 118).
摘要翻译：本发明涉及用于驱动硬盘驱动器的主轴电动机，包括：固定发动机部件（10,12,16,18），旋转电动机部件（14），其通过相对于固定电动机部件可旋转地安装流体动力轴承系统，设置在固定（10,12,16,18）部件和旋转马达部件（14）之间并填充有轴承流体的轴承间隙（20），并且具有至少一个开口端用于密封所述轴承间隙（20）的开口端的至少一个密封间隙（34），用于覆盖所述密封间隙（34）的至少一个盖帽（30），其固定到所述可旋转的马达部件（14），用于将至少一个磁存储盘（48）附接到可旋转电动机构件（14）上的盘夹（44）和用于驱动可旋转马达构件（14）的电磁驱动系统（40,42）。根据本发明，盘夹（44,156）在盖帽（30,118）的外围表面上居中。

10. 发明申请

US20150348582A1 SPINDLE MOTOR AND DISK DRIVE APPARATUS 有权
标题翻译：主轴电机和磁盘驱动器
公开(公告)号：US20150348582A1
公开(公告)日：2015-12-03
申请号：US14596478
申请日：2015-01-14
申请人： Nidec Corporation
发明人： Yoichi SEKII
IPC分类号： G11B19/20 , H02K7/08
CPC分类号： H02K1/30 , G11B19/2036 , G11B19/2045 , H02K7/086
摘要： A motor includes a rotor hub with a first horizontal surface, a cylindrical surface, a second horizontal surface, and a projecting portion. The first horizontal surface is located above the sleeve. The cylindrical surface extends downward from the first horizontal surface. The second horizontal surface is located above a stator. The projecting portion projects downward from the second horizontal surface, and surrounds the sleeve or the holding portion. The cylindrical surface and an outer circumferential surface of the sleeve together define a tapered gap therebetween where the radial distance therebetween decreases with increasing height. The holding portion, the projecting portion, and coils are located radially in this order, and at least portions thereof are positioned to radially overlap with one another.
摘要翻译：马达包括具有第一水平表面的转子轮毂，圆柱形表面，第二水平表面和突出部分。第一个水平表面位于套筒上方。圆柱形表面从第一水平表面向下延伸。第二水平面位于定子上方。突出部分从第二水平表面向下突出，并且围绕套筒或保持部分。套筒的圆柱形表面和外圆周表面一起形成一个锥形间隙，其间的径向距离随着高度的增加而减小。保持部分，突出部分和线圈以该顺序径向地定位，并且其至少部分被定位成彼此径向重叠。

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