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1. 发明专利

JP2006238689A Spindle motor and hard disc drive equipped with it 审中-公开
标题翻译：主轴电机和硬盘驱动器配备
公开(公告)号：JP2006238689A
公开(公告)日：2006-09-07
申请号：JP2006045007
申请日：2006-02-22
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： HOFFMANN JOERG , WINTERHALTER OLAF
IPC分类号： H02K5/16 , F16C17/10 , F16C33/74 , G11B19/20 , H02K7/08
CPC分类号： G11B19/2009 , F16C17/045 , F16C17/10 , F16C33/107 , F16C2370/12 , H02K5/1675
摘要： PROBLEM TO BE SOLVED: To provide a small-sized spindle motor especially with low overall height.
SOLUTION: The spindle motor incorporates a rotor 6 with a shaft 8 coupled to a rotor's bell mouth portion 7, a cylindrical bearing sleeve 10 with a flange 11 at the opening area for housing of the shaft 8 on a feed hole, a stopper ring 14 fixed between the flange 11 and a base plate 13 at the inner diameter side of the rotor's bell mouth portion 7, and at least one radial bearing each of 15 and 16 employing a surface pattern structure which is formed between the outer diameter side of the shaft 8 and the inner diameter side of the bearing sleeve 10. This spindle motor is provided with a pan-shaped cabinet 12 at the bottom side of the pan-shaped bearing for housing the bearing sleeve 10 with one side of a fluid dynamic pressure bearing closed, and an annular thrust bearing 18 fixed between the flat bottom surface on the flange 11 and the flat top surface on the stopper ring 14.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种特别是整体高度低的小型主轴电机。解决方案：主轴电动机包括转子6，转子6与转子的喇叭口部分7连接的轴8，圆柱形轴承套筒10，其在开口区域处具有凸缘11，用于将轴8容纳在进给孔上，固定在凸缘11与转子喇叭口部7的内径侧的基板13之间的止动环14，以及至少一个径向轴承，每个轴承15和16采用表面图案结构，该表面图案结构形成在外径侧轴8和轴承套筒10的内径侧。该主轴电动机在盘形轴承的底侧设置有盘形壳体12，用于容纳轴承套筒10，其一侧具有流体动力压力轴承关闭，以及固定在凸缘11上的平坦底表面和止动环14上的平坦顶表面之间的环形止推轴承18.（C）2006年，JPO＆NCIPI

2. 发明专利

JP2004092905A Vibration damper and vibration damping method for rotary storage disc of data storage unit 审中-公开
公开(公告)号：JP2004092905A
公开(公告)日：2004-03-25
申请号：JP2003167313
申请日：2003-06-12
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： WINTERHALTER OLAF
IPC分类号： F16C17/02 , F16C17/04 , F16C33/10 , F16F15/10 , G11B19/20
CPC分类号： F16C33/107 , F16C17/045 , F16C2370/12 , F16F15/10 , G11B19/2018
摘要： PROBLEM TO BE SOLVED: To provide a device and method for damping vibration of a rotary storage disc of a data storage unit.
SOLUTION: The data storage unit 1 has at least one reader-writer 11 writing data on a storage disc 8 and reading data from the storage disc 8, and a rotor 5 supporting a stator 6 and the storage disc 8. The stator 6 and the rotor 5 are arranged by a bearing device so they can mutually rotate. In the data storage unit 1, one face of the storage disc 8 forms a bearing surface 9, the bearing surface 9 is arranged directly facing a static bearing surface 10, and at least one of the two bearing surfaces 9 and 10 has a groove pattern formed so as to damp or correct vibration of the storage disc 8 generated by rotation.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004183894A Dynamic-pressure bearing 审中-公开
标题翻译：动态压力轴承
公开(公告)号：JP2004183894A
公开(公告)日：2004-07-02
申请号：JP2003397105
申请日：2003-11-27
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： WINTERHALTER OLAF
IPC分类号： F16C17/10 , F16C33/10 , H02K5/167 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To provide a dynamic-pressure bearing used for a spindle motor or the like in which power losses are reduced, the functionality is enhanced, high rigidity in the radial direction is obtained when the motor is driven, and excellent rigidity in the axial direction is obtained when the motor is started and stopped.
SOLUTION: The dynamic-pressure bearing comprises a shaft (14), a bearing sleeve (12) with the shaft passed therethrough with a small space in the radial direction, and a counter plate (30) coupled with the bearing sleeve in a relatively non-rotatable manner at one end portion of the bearing sleeve (12). A thrust plate (32) or an expansion part (42) to be gradually expanded as the dimension in the radial direction is brought close to a shaft end portion is provided on the end portion of the shaft on the counter plate (30) side. A bearing space which is filled with bearing fluid and having a means to generate the excessive pressure higher than the atmospheric pressure is formed between the shaft (14) and the bearing sleeve (12).
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于主动电机等的动压轴承，其中功率损耗减小，功能得到增强，当电机被驱动时，获得了在径向方向上的高刚性，并且当马达启动和停止时，获得良好的轴向刚性。解决方案：动压轴承包括轴（14），轴（12），其轴沿径向具有较小的空间而穿过其中，以及与轴承套联接的对置板（30）在轴承套（12）的一个端部处的相对不可旋转的方式。在台板（30）侧的轴的端部设置有随着径向尺寸逐渐扩大的推力板（32）或膨胀部（42）靠近轴端部。在轴（14）和轴承套（12）之间形成有填充有轴承流体并且具有产生高于大气压力的过大压力的装置的轴承空间。版权所有（C）2004，JPO＆NCIPI

4. 发明专利

JP2001159426A METHOD OF MANUFACTURING FLUID BEARING 失效
公开(公告)号：JP2001159426A
公开(公告)日：2001-06-12
申请号：JP2000317314
申请日：2000-10-18
申请人： MINEBEA CO LTD
发明人： OELSCH JUERGEN , WINTERHALTER OLAF
IPC分类号： F16C33/14 , B23K26/362 , B23P9/00 , F16C17/10 , F16C33/10 , F16C33/12 , F16C33/24 , B23K26/00
摘要： PROBLEM TO BE SOLVED: To provide a method for accurately and easily manufacturing dynamic groove of a fluid bearing at a low cost. SOLUTION: Coating film layers 25, 26, 27, 56, 57 and 58 having the specified thickness are formed on at least one surface of each of first members 1, 15 and 47 and second members 3, 35 and 47, having facing surfaces relatively rotated. Dynamic grooves 6, 28, 29, 30, 59, 60 and 61, having the prescribed thickness, the prescribed width and the prescribed length are formed on the coating film layers with high-energy beams.

5. 发明专利

JP2013243933A Spindle motor including fluid dynamic pressure bearing device and fixed shaft 有权
标题翻译：主轴电机，包括流体动力轴承装置和固定轴
公开(公告)号：JP2013243933A
公开(公告)日：2013-12-05
申请号：JP2013178259
申请日：2013-08-29
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： WINTERHALTER OLAF , WILDPRETH MATTHIAS , FUSS THOMAS , POPOV VLADIMIR VLADIMIROVICH , FLEIG JUERGEN , BAUER MARTIN , SCHMID GUIDO , MARTIN ENGESSER , STEFAN SCHWAMBERGER
IPC分类号： H02K5/16 , F16C17/10 , F16C33/74 , H02K7/08
CPC分类号： F16C33/745 , F16C17/107 , F16C33/1085 , F16C2370/12 , H02K5/1677
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor including a fluid dynamic pressure bearing device with a fixed shaft attached to both end parts, and consisting only of a small number of components which can be manufactured relatively simply.SOLUTION: The spindle motor includes a fluid dynamic pressure bearing device including rotor components (14) surrounding a fixed shaft (12). The shaft is coupled with bearing components (16;18) facing the axial direction at both end parts. These bearing components are molded to form capillary seal gaps (32;34) sealing the fluid dynamic pressure bearing device having both open sides, and an arbitrary selection dynamic pumping seal (36). A circulation passage (28) interconnecting regions of the bearing device separated from each other and filled with a bearing fluid, and electromagnetic drive units (42, 44) for driving the rotor components are provided.
摘要翻译：要解决的问题：提供一种主轴电动机，其包括具有附接到两个端部的固定轴的流体动压轴承装置，并且仅由少数可以相对简单地制造的部件构成。解决方案：主轴电动机包括流体动压轴承装置包括围绕固定轴（12）的转子部件（14）。轴与在两个端部处面向轴向方向的轴承部件（16; 18）联接。模制这些轴承部件以形成密封具有两个开口侧面的流体动压轴承装置和任意选择动态泵送密封件（36）的毛细管密封间隙（32; 34）。提供了将彼此分离并填充有轴承流体的轴承装置的互连区域的循环通道（28）以及用于驱动转子部件的电磁驱动单元（42,44）。

6. 发明专利

JP2005257069A Fluid dynamic pressure bearing system 审中-公开
标题翻译：流体动力压力轴承系统
公开(公告)号：JP2005257069A
公开(公告)日：2005-09-22
申请号：JP2005005954
申请日：2005-01-13
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： KULL ANDREAS , WINTERHALTER OLAF
IPC分类号： F16C17/10 , F16C33/10 , G11B19/20 , H02K7/08
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C33/103 , F16C2370/12 , G11B19/2009
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic pressure bearing system capable of avoiding a problem in the axial positioning of a thrust plate without using a through hole in the thrust plate.
SOLUTION: This fluid dynamic pressure bearing system comprises a shaft 4, the thrust plate 10 connected to the shaft 4, and a bearing sleeve 3 sealed on one side by a cover plate 11 surrounding, at a slight interval, the shaft 4 and the thrust plate 10 while forming bearing clearances 7 and 7' filled with a lubricant 16. At least either of the mutually acting and connected bearing surfaces of the shaft 4 and the bearing sleeve 3 and the thrust plate 10 and the cover plate 11 is formed in a surface structure.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种流体动压轴承系统，其能够避免在推力板的轴向定位中的问题，而不使用止推板中的通孔。解决方案：该流体动压轴承系统包括轴4，连接到轴4的止推板10和轴承套筒3，轴承套筒3在一侧由盖板11密封，盖板11以稍微的间隔围绕轴4 同时形成轴承间隙7和7'，同时填充有润滑剂16.轴4和轴承套3以及推力板10和盖板11的相互作用和连接的支承表面中的至少一个是形成在表面结构中。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004003613A Fluid bearing for spindle motor, spindle motor and disk drive device 审中-公开
公开(公告)号：JP2004003613A
公开(公告)日：2004-01-08
申请号：JP2003062212
申请日：2003-03-07
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： KULL ANDREAS , WINTERHALTER OLAF , HOFFMANN JOERG
IPC分类号： F16C17/02 , F16C17/08 , F16C17/10 , G11B19/20 , H02K7/08 , H02K21/22
摘要： PROBLEM TO BE SOLVED: To provide a fluid bearing for a spindle motor having the minimum size and capable of being manufactured at reasonable cost.
SOLUTION: The fluid bearing for the spindle motor is equipped with a shaft 62 and a bearing bush 60a which surrounds the shaft 62 in a state of having very narrow radial clearance. A groove is formed to form a pressure formed area on the outer surface of the shaft 62 and/or inner surface of the bearing bush 60a. The bearing bush 60a is constituted by a single member along with a flange 60, a base plate or the other stationary body members of the spindle motor.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2004248481A Spindle motor and hard disk drive 审中-公开
公开(公告)号：JP2004248481A
公开(公告)日：2004-09-02
申请号：JP2003062213
申请日：2003-03-07
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： HOFFMANN JOERG , HAFEN MARTIN , WINTERHALTER OLAF
IPC分类号： F16C17/02 , F16C17/04 , F16C17/10 , F16C17/26 , F16C33/10 , F16C33/80 , G11B19/20 , H02K5/15 , H02K5/16 , H02K5/167 , H02K21/22
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12 , G11B19/2018 , H02K5/1675
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor for a hard disk drive that has a sealing device for effectively preventing the dissipation of a bearing fluid.
SOLUTION: This spindle motor for the hard disk drive that is provided with a stator 3 having a bearing surface 17 and a rotor 5 that is rotatable corresponding to the stator 3 and having another bearing surface 19, in which the two bearing surfaces 17, 19 are arranged facing each other, and that forms a bearing gap to constitute a fluid bearing in the radial direction where the bearing fluid exists. In this spindle motor, the stator 3 and the rotor 5 have sealing surfaces 35, 37, 39, 41, 43, 45 that form pairs respectively. These sealing surfaces 35, 37, 39, 41, 43, 45 forming the pairs are arranged to face each other without contact so that labyrinth seals can be formed that seal the bearing gap that corresponds to a space 48 where no bearing oil is present.
COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2004053025A Fluid dynamic-pressure bearing and mounting method of thrust plate 审中-公开
公开(公告)号：JP2004053025A
公开(公告)日：2004-02-19
申请号：JP2003277153
申请日：2003-07-18
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： RALPH DITTES , HOFFMANN JOERG , HELMUT HUENECKE , OELSCH JUERGEN , REHM THILO , MATTHIAS WILBRECHT , WINTERHALTER OLAF
IPC分类号： F16C17/08 , F16C17/10 , F16C43/02 , H02K7/08 , H02K15/14
CPC分类号： F16C17/08 , F16C17/107
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic-pressure bearing capable of coupling a thrust plate to a shaft by pressure stably and highly accurately even when the thrust plate is extremely thin and has a small guide coefficient.
SOLUTION: The fluid dynamic-pressure bearing has a spherical fixing element 12 that is inserted into an axial hole formed in the shaft 4 and fixes the thrust plate 9. The outer diameter of this fixing element 12 is set larger than minimum inner diameter of the hole. Therefore, the fixing element 12 widens the shaft 4 at the insert position, generates radial pressurizing force, and fixes the thrust plate 9 to a predetermined position of the shaft 4.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2004053022A Fluid dynamic-pressure bearing and its assembling method 审中-公开
标题翻译：流体动力压力轴承及其组装方法
公开(公告)号：JP2004053022A
公开(公告)日：2004-02-19
申请号：JP2003275843
申请日：2003-07-17
申请人： Minebea Co Ltd , ミネベア株式会社
发明人： WINTERHALTER OLAF , OELSCH JUERGEN
IPC分类号： F16B4/00 , F16C3/02 , F16C17/02 , F16C17/04 , F16C17/08 , F16C17/10 , F16C33/14 , F16C43/02
CPC分类号： F16C3/02 , F16C17/08 , F16C17/107 , F16C2370/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic-pressure bearing for preventing even slight abrasion in starting and stopping processes of a spindle motor.
SOLUTION: The fluid dynamic-pressure bearing has an element 12 having a spherical surface at least partially inserted into a hole 11 formed in a shaft 4. The spherical surface of the element 12 slightly projects from the front end of the shaft 4, and the element 12 is placed on a facing bearing 10 at least at a static time of a spindle motor. The element 12 suppresses abrasion of a dynamic-pressure bearing surface at the static time of the spindle motor, or is constituted as a fixing element for widening the shaft 4 to fix a thrust plate 9 to the shaft 4 with radial pressurizing force.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种流体动压轴承，用于防止主轴电动机的起动和停止过程中的甚至轻微的磨损。解决方案：流体动压轴承具有至少部分地插入形成在轴4中的孔11中的球形表面的元件12.元件12的球形表面稍稍从轴4的前端突出，并且元件12至少在主轴电机的静止时间放置在面向轴承10上。元件12抑制主轴电动机的静止时的动压承受面的磨损，或者构成为用于使轴4变宽的固定元件，以将径向加压力固定在轴4上。版权所有（C）2004，JPO

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