公开(公告)号：US20070274617A1

公开(公告)日：2007-11-29

申请号：US10591802

申请日：2005-03-17

申请人： Katsuo Shibahara ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima ,  Tetsuya Kurimura

发明人： Katsuo Shibahara ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima ,  Tetsuya Kurimura

IPC分类号： F16C32/06 ,  B29D22/00 ,  H02K5/00 ,  B32B25/00

CPC分类号： F16C33/201 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  Y10T428/1352

摘要： The present invention provides a fluid dynamic bearing device having high durability and capable of being produced at low cost. In the fluid dynamic bearing device, a housing (7) and a disc hub (3) are resin molded parts, and a thrust bearing gap is formed between an upper end surface (7d) of the housing (7) and a lower end surface (3e) of the disc hub (3). In this case, the surfaces (7d, 3e) function as sliding portions (P) temporarily in sliding contact with each other during operation of the bearing. A diameter of PAN-based carbon fibers blended as reinforcement fibers in the resin housing (7) is 12 μm or less, and the blending amount is within a range of 5 to 20 vol %, thereby making it possible to prevent occurrence of flaws and wear in the sliding portions (P).

摘要翻译： 本发明提供一种具有高耐久性且能够以低成本制造的流体动力轴承装置。 在流体动力轴承装置中，壳体（7）和盘毂（3）是树脂模制部件，并且在壳体（7）的上端表面（7d）和下端 盘毂（3）的表面（3e）。 在这种情况下，表面（7d，3e）作为滑动部（P）在轴承的运转中暂时相互滑动接触。 在树脂外壳（7）中作为增强纤维混合的PAN系碳纤维的直径为12μm以下，共混量在5〜20vol％的范围内，能够防止发生缺陷， 滑动部分（P）磨损。

公开(公告)号：US07798721B2

公开(公告)日：2010-09-21

申请号：US10591802

申请日：2005-03-17

申请人： Katsuo Shibahara ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima ,  Tetsuya Kurimura

发明人： Katsuo Shibahara ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima ,  Tetsuya Kurimura

IPC分类号： F16C32/06 ,  H02K5/16 ,  B29D22/00

CPC分类号： F16C33/201 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  Y10T428/1352

摘要： The present invention provides a fluid dynamic bearing device having high durability and capable of being produced at low cost. In the fluid dynamic bearing device, a housing and a disc hub are resin molded parts, and a thrust bearing gap is formed between an upper end surface of the housing and a lower end surface of the disc hub. In this case, the surfaces function as sliding portions temporarily in sliding contact with each other during operation of the bearing. A diameter of PAN-based carbon fibers blended as reinforcement fibers in the resin housing is 12 μm or less, and the blending amount is within a range of 5 to 20 vol %, thereby making it possible to prevent occurrence of flaws and wear in the sliding portions.

摘要翻译： 本发明提供一种具有高耐久性且能够以低成本制造的流体动力轴承装置。 在流体动态轴承装置中，壳体和盘毂是树脂模制部件，并且在壳体的上端表面和盘毂的下端表面之间形成推力轴承间隙。 在这种情况下，在轴承的动作中，表面作为滑动部临时滑动接触。 在树脂壳体中作为增强纤维混合的PAN系碳纤维的直径为12μm以下，配合量在5〜20体积％的范围内，从而可以防止发生瑕疵和 滑动部分。

公开(公告)号：US20070196035A1

公开(公告)日：2007-08-23

申请号：US10567686

申请日：2004-09-21

申请人： Katsuo Shibahara ,  Ryouichi Nakajima ,  Kenji Ito

发明人： Katsuo Shibahara ,  Ryouichi Nakajima ,  Kenji Ito

IPC分类号： F16C32/06

CPC分类号： F16C17/107 ,  F16C33/104 ,  F16C33/107

摘要： The invention is aimed at further reducing the cost of a dynamic pressure bearing unit. In a shaft member 2, a shaft portion 2a is disposed with the outer circumferential surface thereof facing the inner circumferential surface of a bearing sleeve across a radial bearing gap, while a flange portion 2b is disposed with both end faces 2b1 and 2b2 thereof respectively facing one end face of the bearing sleeve and a bottom face of a housing across respective thrust bearing gaps, and the shaft member 2 is supported in a thrust direction in a noncontact fashion by a dynamic pressure occurring in each bearing gap. In the shaft member 2, the core of the shaft portion 2a and the flange portion 2b are both formed from a resin member 21, while the outer circumference of the shaft portion 2a is formed from a metal member 22.

摘要翻译： 本发明旨在进一步降低动压轴承单元的成本。 在轴构件2中，设置有轴部分2a，其外周面与轴承套筒的内周面相对于径向轴承间隙设置，而凸缘部分bb设置有两个端面2b 1和 2 b 2分别面对轴承套的一个端面和横跨相应推力轴承间隙的壳体的底面，并且轴构件2以非接触的方式以推力方向被支撑在每个轴承间隙中发生的动压力 。 在轴构件2中，轴部2a的芯部和凸缘部分bb都由树脂构件21形成，而轴部2a的外周由金属构件22形成。

公开(公告)号：US07448804B2

公开(公告)日：2008-11-11

申请号：US11727226

申请日：2007-03-26

申请人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

发明人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107 ,  F16C2370/12 ,  H02K5/1675

摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.

公开(公告)号：US07399121B2

公开(公告)日：2008-07-15

申请号：US11727227

申请日：2007-03-26

申请人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

发明人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107 ,  F16C2370/12 ,  H02K5/1675

摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.

摘要翻译： 本发明旨在提高流体轴承装置的组装精度和旋转精度，并进一步降低成本。 轴承套固定在壳体的内周上。 轴向构件通过形成在径向轴承间隙中的油膜以径向方式非接触地支撑。 由树脂制成的壳体通过使用基板作为插入部件进行注射成型。 在基板上安装有用于控制多边形扫描仪马达的控制电路。

公开(公告)号：US07267484B2

公开(公告)日：2007-09-11

申请号：US10843672

申请日：2004-05-12

申请人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

发明人： Fuminori Satoji ,  Seiji Shimizu ,  Kenji Ito ,  Isao Komori ,  Ryouichi Nakajima

IPC分类号： F16C17/10

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107 ,  F16C2370/12 ,  H02K5/1675

摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.

摘要翻译： 本发明旨在提高流体轴承装置的组装精度和旋转精度，并进一步降低成本。 轴承套固定在壳体的内周上。 轴向构件通过形成在径向轴承间隙中的油膜以径向方式非接触地支撑。 由树脂制成的壳体通过使用基板作为插入部件进行注射成型。 在基板上安装有用于控制多边形扫描仪马达的控制电路。

公开(公告)号：US20070104400A1

公开(公告)日：2007-05-10

申请号：US10570144

申请日：2004-10-12

申请人： Kenji Ito ,  Ryouichi Nakajima

发明人： Kenji Ito ,  Ryouichi Nakajima

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12

摘要： It is an object to improve bearing rigidity in a thrust direction at high temperatures and reduce a torque at low temperatures. An axial member 2 is arranged in such a manner that an outer circumferential surface of an axial part 2a is opposed to an inner circumferential surface of a bearing sleeve with a radial bearing gap interposed therebetween, and both end faces 2b1 and 2b2 of a flange part 2b are opposed to one end face of the bearing sleeve and a bottom face of a housing with thrust bearing gaps interposed therebetween, respectively. In this manner, the axial member 2 is supported by dynamic pressures generated in the respective bearing gaps in the thrust direction in a non-contact manner. The flange part of the axial member 2 is formed of a resin in such a manner that its linear expansion coefficient in its axial direction is equal to or larger than that of the housing 7.

摘要翻译： 本发明的目的是在高温下提高推力方向的轴承刚性并降低低温下的转矩。 轴向构件2以轴向部分2a的外周面与轴承套筒的内周面相对的方式配置，其中径向轴承间隙插入其中，并且两个端面2b 1和2b 凸缘部分2b的两个分别与轴承套筒的一个端面和一个具有止推轴承间隙的壳体的底面相对。 以这种方式，轴向构件2以不接触的方式在推力方向上在相应的轴承间隙中产生的动压力支撑。 轴向构件2的凸缘部由树脂形成，使得其轴向的线膨胀系数等于或大于壳体7的线膨胀系数。

公开(公告)号：US07625124B2

公开(公告)日：2009-12-01

申请号：US10569085

申请日：2004-09-01

申请人： Fuminori Satoji ,  Ryouichi Nakajima ,  Kenji Ito

发明人： Fuminori Satoji ,  Ryouichi Nakajima ,  Kenji Ito

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C35/02

摘要： While applying an ultrasonic vibration to a housing 7 and/or a bearing sleeve 8, the outer peripheral surface 8d of the bearing sleeve 8 is press-fitted into the inner peripheral surface 7c of the housing 7 with a predetermined interference, and is welded thereto. During the press-fitting, the region of the inner peripheral surface 7c of the housing 7 coming into contact with the bearing sleeve 8 is melted or softened by the action of the ultrasonic vibration, so that, as compared with a case in which only press-fitting is conducted, the requisite press-fitting force at the time of press-fitting can be substantially reduced.

摘要翻译： 在将壳体7和/或轴承套筒8施加超声波振动的同时，将轴承套筒8的外周面8d以规定的干涉压配合到壳体7的内周面7c内， 。 在压配合期间，与轴承套8接触的壳体7的内周面7c的区域通过超声波振动的作用而熔化或软化，使得与仅仅按压 进行配合时，压配合时的必要的压配力可以大大降低。

公开(公告)号：US20070092170A1

公开(公告)日：2007-04-26

申请号：US10569085

申请日：2004-09-01

申请人： Fuminori Satoji ,  Ryouichi Nakajima ,  Kenji Ito

发明人： Fuminori Satoji ,  Ryouichi Nakajima ,  Kenji Ito

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C35/02

摘要： While applying an ultrasonic vibration to a housing 7 and/or a bearing sleeve 8, the outer peripheral surface 8d of the bearing sleeve 8 is press-fitted into the inner peripheral surface 7c of the housing 7 with a predetermined interference, and is welded thereto. During the press-fitting, the region of the inner peripheral surface 7c of the housing 7 coming into contact with the bearing sleeve 8 is melted or softened by the action of the ultrasonic vibration, so that, as compared with a case in which only press-fitting is conducted, the requisite press-fitting force at the time of press-fitting can be substantially reduced.

摘要翻译： 在将壳体7和/或轴承套筒8施加超声波振动的同时，以规定的干涉将轴承套8的外周面8d压入壳体7的内周面7c， 焊接到其上。 在压入期间，与轴承套8接触的壳体7的内周面7c的区域通过超声波振动的作用而熔化或软化，使得与仅仅 进行压配合时，压配合时的必要压配力能够大幅降低。

公开(公告)号：US07591591B2

公开(公告)日：2009-09-22

申请号：US10570144

申请日：2004-10-12

申请人： Kenji Ito ,  Ryouichi Nakajima

发明人： Kenji Ito ,  Ryouichi Nakajima

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12

摘要： It is an object to improve bearing rigidity in a thrust direction at high temperatures and reduce a torque at low temperatures. An axial member is arranged in such a manner that an outer circumferential surface of an axial part is opposed to an inner circumferential surface of a bearing sleeve with a radial bearing gap interposed therebetween, and both end faces of a flange part are opposed to one end face of the bearing sleeve and a bottom face of a housing with thrust bearing gaps interposed therebetween, respectively. In this manner, the axial member is supported by dynamic pressures generated in the respective bearing gaps in the thrust direction in a non-contact manner. The flange part of the axial member is formed of a resin in such a manner that its linear expansion coefficient in its axial direction is equal to or larger than that of the housing.

摘要翻译： 本发明的目的是在高温下提高推力方向的轴承刚性并降低低温下的转矩。 轴向构件以轴向部分的外周面与轴承套筒的内周面相对的方式配置，其间插入径向轴承间隙，凸缘部的两端面与一端 轴承套的表面和分别具有推力轴承间隙的壳体的底面。 以这种方式，轴向构件以非接触的方式在推力方向上在相应的轴承间隙中产生的动压力支撑。 轴向构件的凸缘部由树脂形成，使得其轴向的线膨胀系数等于或大于壳体的线膨胀系数。