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1. 发明专利

JP2009180318A Fluid dynamic pressure bearing device, spindle motor, disk drive apparatus and method for manufacturing the bearing device 有权
标题翻译：流体动力压力轴承装置，主轴电动机，磁盘驱动装置和制造轴承装置的方法
公开(公告)号：JP2009180318A
公开(公告)日：2009-08-13
申请号：JP2008020831
申请日：2008-01-31
申请人： Nippon Densan Corp , 日本電産株式会社
发明人： MARUYAMA TETSUYA , KUTSUKAKE MAKOTO , KOJIMA HIROFUMI , ITO MICHIHIRO , SEICHI MASAYOSHI
IPC分类号： F16C17/10 , F16C33/10 , F16C35/02 , G11B19/20 , H02K7/08
CPC分类号： G11B19/2036 , F16C17/10 , F16C33/107 , F16C33/1085 , F16C2370/12 , H02K5/1675 , H02K5/1677 , H02K7/085 , Y10T29/49639
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic pressure bearing device capable of preventing the axial displacement of an annular member with respect to a shaft and inclination of the annular member, a spindle motor and a disk drive device and to provide a preferred method for manufacturing the fluid dynamic pressure bearing device. SOLUTION: A lubricating film 47 is formed in a region of the lower surface 44a of a bushing 44 as the annular member except for the portion that makes contact with a stepped surface 413 of the shaft 41. Therefore, there is no possibility that the lubricating film 47 may be deformed between the lower surface 44a of the bushing 44 and the stepped surface 413 of the shaft 41 so that the axial displacement of a hub 42 with respect to the shaft 41 and the inclination of the hub 42 can be prevented. In the manufacturing steps, it is possible to preferably form the lubricating film 47 in the region by forming an original coating for the lubricating film 47 on the bushing 44 and then cutting the bushing 44 and the surface of the coating. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种流体动压轴承装置，其能够防止环形构件相对于轴的轴向位移和环形构件，主轴电机和盘驱动装置的倾斜，并且提供一种用于制造流体动压轴承装置的优选方法。解决方案：除了与轴41的台阶表面413接触的部分之外，在作为环形构件的衬套44的下表面44a的区域中形成润滑膜47.因此，不可能润滑膜47可能在衬套44的下表面44a和轴41的台阶表面413之间变形，使得轮毂42相对于轴41的轴向位移和轮毂42的倾斜度可以是防止了在制造工序中，通过在衬套44上形成用于润滑膜47的原始涂层，然后切割衬套44和涂层的表面，可以优选在该区域形成润滑膜47。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2006292177A Dynamic-pressure bearing arrangement 审中-公开
标题翻译：动态压力轴承装置
公开(公告)号：JP2006292177A
公开(公告)日：2006-10-26
申请号：JP2006172223
申请日：2006-06-22
申请人： Nippon Densan Corp , 日本電産株式会社
发明人： SEICHI MASAYOSHI , GOMYO MASATO
IPC分类号： F16C17/10 , F16C33/10 , F16C33/74
摘要： PROBLEM TO BE SOLVED: To provide a dynamic-pressure bearing arrangement capable of assuring bonding strength and bending strength and furthermore rigidity of a dynamic-pressure bearing by assuring long enough for bonding length between each component.
SOLUTION: The dynamic-pressure bearing arrangement composes a radial dynamic-pressure bearing part 3 in a clearance between the inner peripheral surface of a sleeve 2 and the outer peripheral surface of a shaft member 1 and composes a thrust dynamic-pressure bearing part 4 in clearance between the axial one end of the sleeve 2 and the opposite surface of the shaft member 1 opposed to the one end and composes a capillary tube sealing part 45 in a clearance between the sleeve 2 and the shaft member 1 opposed to the sleeve 2. A lubricant fluid is continuously filled into the radial dynamic-pressure bearing part 3, the thrust dynamic-pressure bearing part 4 and the capillary tube sealing part 45 without being blocked and forms gas-liquid interface with outside air only within the capillary tube sealing part 45.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种动态压力轴承装置，其能够通过确保足够长的时间来粘合每个部件之间的长度，从而确保动压轴承的接合强度和弯曲强度以及另外的刚性。解决方案：动压轴承装置在套筒2的内周面与轴构件1的外周面之间的间隙中构成径向动压轴承部3，构成推力动压轴承套筒2的轴向一端与轴构件1的与该一端相对的相对表面之间的间隙部分4构成一个毛细管密封部分45，该套管2与轴构件1之间的间隙相对润滑剂液体被连续地填充到径向动压轴承部3，推力动压轴承部4和毛细管密封部45中，而不被阻塞，并且仅在毛细管内部与外部空气形成气液界面管密封部分45.版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007244004A Motor and recording disc drive equipped with it 审中-公开
标题翻译：配备电机和记录盘驱动器
公开(公告)号：JP2007244004A
公开(公告)日：2007-09-20
申请号：JP2006052581
申请日：2006-02-28
申请人： Nippon Densan Corp , 日本電産株式会社
发明人： GOMYO MASATO , KURITA MINEO , SEICHI MASAYOSHI
IPC分类号： H02K1/16 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor in which cogging and electromagnetic noise are reduced while enhancing torque. SOLUTION: In the spindle motor, the core 33 is produced by laminating a plurality of core plates 34. The core 33 is produced by stacking first and second cores. The first core 34a and the second core 34b have surfaces of different profile opposing a rotor magnet 32. Cogging torque generated from the second core 34b is offset at least partially by cogging torque generated from the first core 34a. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供在增加扭矩的同时减少齿槽和电磁噪声的主轴电机。解决方案：在主轴电机中，芯33通过层叠多个芯板34而制造。芯33通过堆叠第一和第二芯来制造。第一芯34a和第二芯34b具有与转子磁体32相对的不同轮廓的表面。由第二芯34b产生的齿槽转矩至少部分地由第一芯34a产生的齿槽转矩偏移。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2010175078A Dynamic pressure bearing device, dynamic pressure bearing motor equipped with this dynamic pressure bearing device, and disk driving device equipped with this dynamic pressure bearing motor 有权
标题翻译：动态压力轴承装置，配有该动态压力轴承装置的动态压力轴承电动机以及配备该动态压力轴承电动机的盘驱动装置
公开(公告)号：JP2010175078A
公开(公告)日：2010-08-12
申请号：JP2010032285
申请日：2010-02-17
申请人： Nippon Densan Corp , 日本電産株式会社
发明人： SEICHI MASAYOSHI , GOMYO MASATO
IPC分类号： F16C33/10 , F16C17/10 , F16C33/74 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing device capable of satisfactorily ensuring a joint strength, a flexual strength, and the rigidity of a dynamic pressure bearing by ensuring a length of joining between constituent members sufficiently.
SOLUTION: This dynamic pressure bearing device has a shaft member 1 and a sleeve 2 rotating relatively for each other. A radial dynamic pressure bearing part 3 is formed between the outer peripheral face of a central shaft 11 and the inner peripheral part of a cylindrical part, and thrust dynamic pressure bearing parts 4, 5 are formed among one end face of the sleeve 2 and opposing faces in the axial direction of the shaft member 1. The sleeve 2 has a peripheral groove, and a cap-like cover 28 blocking the cylindrical part 21 of the sleeve 2 is provided on the other end side of the sleeve 2. The outer peripheral part of the cover 28 is joined with the sleeve 2 in the peripheral groove. A clearance in the axial direction is formed between the cover 28 and the shaft 11 and is filled with a lubricating fluid.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过确保构成部件之间的连接长度充分地能够令人满意地确保接合强度，弯曲强度和动压轴承刚性的动压轴承装置。解决方案：该动态压力承载装置具有相对于彼此旋转的轴构件1和套筒2。在中心轴11的外周面和圆筒部的内周部之间形成有径向动压轴承部3，在套筒2的一个端面和相对的一个端面之间形成有推力动压轴承部4,5 面向轴构件1的轴向。套筒2具有周向槽，并且在套筒2的另一端侧设置有阻挡套筒2的圆筒部21的帽状盖28。盖28的一部分与套筒2连接在周边槽中。在盖28和轴11之间形成轴向间隙，填充有润滑液。版权所有（C）2010，JPO＆INPIT

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