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    • 3. 发明专利
    • フォイル軸受ユニット
    • 螺旋轴承单元
    • JP2015052345A
    • 2015-03-19
    • JP2013185191
    • 2013-09-06
    • Ntn株式会社Ntn CorpNtn株式会社
    • FUJIWARA HIROKI
    • F16C27/02F01D25/16F02B39/00F02C7/06F16C17/03F16C17/06F16C17/10
    • 【課題】製造コストの高騰を招くことなく、軸を高精度に支持可能なフォイル軸受ユニットを提供する。【解決手段】本発明のフォイル軸受ユニット100は、円筒部31a及び該円筒部31aから外径に延びる平板部31bを一体に有する第1ケース部材31と、第1ケース部材31の円筒部31aの内周面に取り付けられたラジアル軸受フォイル40と、第1ケース部材31の平板部31bの端面に取り付けられたスラスト軸受フォイル50と、第1ケース部材31の円筒部31aの内周に挿入される軸部(スリーブ部21)、及び、スリーブ部21から外径に突出したフランジ部22を有する内方部材20とを備え、ラジアル軸受フォイル40の軸受面とスリーブ部21の外周面との間のラジアル軸受隙間に生じる流体圧で内方部材20をラジアル方向に支持すると共に、スラスト軸受フォイル50の軸受面とフランジ部22の一端面との間のスラスト軸受隙間に生じる流体圧で内方部材20をスラスト方向に支持する。【選択図】図3
    • 要解决的问题:提供一种能够在不增加制造成本的情况下精确地支撑轴的箔片轴承单元。解决方案:本发明的箔片轴承单元100包括一体地具有圆柱形部分31a和平板部分的第一壳体部件31 31b从圆筒部31a延伸到外径,附接到第一壳体部件31的圆筒部31a的内周面的径向轴承箔40,安装在平板部的端面的止推轴承箔50 第一壳体部件31的31b以及插入第一壳体部件31的圆筒部31a的内周的轴部(套筒部21)的内部部件20以及从第二壳体部件31的外径突出的凸缘部22 内部构件20通过在径向轴承箔40的支承表面和外部周边冲击之间的径向轴承间隙中产生的流体压力在径向方向上被支撑 套筒部分21的内侧和内部构件20通过在止推轴承箔50的支承表面和凸缘部分22的一个端面之间的止推轴承间隙中产生的流体压力沿推力方向支撑。
    • 4. 发明专利
    • Hydraulic power generation device
    • 液压发电装置
    • JP2013174208A
    • 2013-09-05
    • JP2012040223
    • 2012-02-27
    • Ntn CorpNtn株式会社
    • FUJIWARA HIROKI
    • F03B11/00F03B3/04F03B17/06F16H1/28
    • Y02E10/223Y02E10/28
    • PROBLEM TO BE SOLVED: To provide a small hydraulic power generation device excellent in friction resistance.SOLUTION: A hydraulic power generation device is provided with: a hollow shaft 32, to the outer periphery of which a spiral blade 30 is provided; a power generator 40; and a transmission 50. The hollow shaft 32 is rotatably supported by a fixed shaft 20 so as to be rotated by a water flow oriented toward the spiral blade 30. The power generator 40 is provided to the interior of the hollow shaft 32. The transmission 50 is provided between the power generator 40 and an end of the hollow shaft 32, inside the hollow shaft 32 and transmits drive force coming from the hollow shaft 32 to a rotor 42 of the power generator 40. On a surface of the transmission 50, coating treatment for reducing a friction coefficient is applied.
    • 要解决的问题:提供耐摩擦阻力优异的小型液压发电装置。解决方案:液压发电装置设有:中空轴32,其外周设有螺旋叶片30; 发电机40; 和变速器50.中空轴32由固定轴20可旋转地支撑,以便通过朝向螺旋叶片30定向的水流旋转。发电机40设置在中空轴32的内部。变速器 50在发电机40和中空轴32的端部之间设置在中空轴32的内部,并将来自中空轴32的驱动力传递到发电机40的转子42.在变速器50的表面上, 施加用于降低摩擦系数的涂覆处理。
    • 6. 发明专利
    • Tapered roller bearing and its design method
    • 滚动轴承及其设计方法
    • JP2010255730A
    • 2010-11-11
    • JP2009105854
    • 2009-04-24
    • Ntn CorpNtn株式会社
    • FUJIWARA HIROKI
    • F16C33/36F16C19/36
    • F16C33/36F16C19/364F16C2240/50
    • PROBLEM TO BE SOLVED: To provide a tapered roller bearing and its design method, capable of lengthening the service life of a bearing by reducing the bearing pressure and stress of a contact part, and capable of improving processing efficiency by reducing a drop quantity of both ends of a roller while eliminating processing failure of a raceway surface. SOLUTION: A crowning forming part of a roller rolling surface is formed in a contact part crowning part 7 existing in the axial directional range of an inner ring raceway surface 1a and contacting with the inner ring raceway surface 1a and a noncontact part crowning part 8 dislocated from the axial directional range of the inner ring raceway surface 1a and not contacting with the inner ring raceway surface 1a. These contact part crowning part 7 and noncontact crowning part 8 are a mutually smoothly continuing line at a contact point by mutually expressing a bus bar extending in the roller axis direction by a different function, and in the vicinity of the contact point, the curvature of the bus bar of the noncontact crowning part 8 is set smaller than the curvature of the bus bar of the contact part crowning part 7. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种圆锥滚子轴承及其设计方法,能够通过降低接触部件的轴承压力和应力来延长轴承的使用寿命,并且能够通过减小液滴来提高加工效率 滚筒两端的数量,同时消除滚道表面的加工故障。 解决方案:滚子滚动面的隆起形成部分形成在存在于内圈滚道表面1a的轴向方向上的接触部分隆起部分7中,并与内圈滚道表面1a接触,并且与非接触部分隆起 部分8从内圈滚道表面1a的轴向方向偏移并且不与内圈滚道表面1a接触。 这些接触部分隆起部分7和非接触隆起部分8通过相互表示在滚子轴线方向上延伸的母线不同的功能而在接触点处相互平滑的连续线,并且在接触点附近, 非接触凸部8的母线设定为小于接触部隆起部7的汇流条的曲率。(C)2011,JPO&INPIT
    • 7. 发明专利
    • Deep groove ball bearing and method for designing the same
    • 深沟球轴承及其设计方法
    • JP2010249241A
    • 2010-11-04
    • JP2009099705
    • 2009-04-16
    • Ntn CorpNtn株式会社
    • FUJIWARA HIROKI
    • F16C19/06
    • PROBLEM TO BE SOLVED: To provide a deep groove ball bearing, capable of ensuring a sufficient basic dynamic rated load while attaining low torque characteristics, and a method for designing the same.
      SOLUTION: The raceway grooves 2a and 3a and groove shoulder heights H
      2a and H
      3a of inner and outer rings 2 and 3, the diameter of balls D
      a , the number of balls Z, and the pitch circle diameter of the balls d
      p are designed so as to satisfy the expression: a≤√[(10
      3 S
      i /D
      a
      2 )
      2 +(10
      3 S
      o /D
      a
      2 )]×(d
      m /d
      p )×(d
      m /D
      a Z)≤b with arbitrary values given to a and b which satisfy the relationship of a i represents the area of the clearance between the raceway groove of the inner ring and a ball in a radial cross-section of the bearing taken along an axial plane, S
      o represents the area of the clearance between the raceway surface of the outer ring and the ball in the radial cross-section, and d
      m represents the average of the inner and outer diameters of the bearing obtained by adding the outer diameter of the outer ring to the inner diameter of the inner ring and dividing the result by two.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够在获得低扭矩特性的同时确保足够的基本动态额定载荷的深沟球轴承及其设计方法。

      解决方案:内圈2和外圈3的滚道槽2a和3a以及槽肩高度H&lt; S2&gt;和H&lt; S&gt; 3a ,滚珠直径D a ,球数Z和球d的节圆直径设计成满足以下表达式:a≤√[(10 3 < / SP>取值 / D 2 2 +(10 3 小号 0 / D 2 )]×(D / D p )×(d m / D a Z)≤b,其中给定a和b的任意值满足a / SB>表示沿着轴向平面在轴承的径向横截面中的内圈的滚道槽和滚珠之间的间隙的面积,S o 表示间隙的面积 在外圈的轨道表面和径向横截面的球之间,d m 表示通过将外圈的外径加上而获得的轴承的内径和外径的平均值 g到内圈的内径,并将结果除以2。 版权所有(C)2011,JPO&INPIT

    • 8. 发明专利
    • Rolling mechanical element
    • 滚动机械元件
    • JP2009197904A
    • 2009-09-03
    • JP2008040154
    • 2008-02-21
    • Ntn CorpNtn株式会社
    • FUJIWARA HIROKI
    • F16C33/34F16C33/66
    • PROBLEM TO BE SOLVED: To provide a rolling mechanical element capable of easily and effectively preventing surface damage of contact surfaces without using special material and applying processing such as special heat treatment even when the rolling mechanical element has poor lubrication.
      SOLUTION: Crowning in which the sum of drop amounts of contacting two objects is expressed by logarithmic function is formed on the rolling surfaces of rollers serving as the contact surfaces. Local contact pressure can be reduced and abrasion is hardly caused on the contact surfaces as compared with the case where crowning indicated by partial arcs is provided on the rolling surfaces of the rollers. Accordingly, even when the film thickness ratio of a lubrication film becomes 3 or less due to a minute amount or low viscosity of a lubricant agent, by employing the crowning in which the drop amounts are expressed by the logarithmic function, abrasion of the contact surfaces can be prevented and damage of the rolling mechanical element can be prevented.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够容易且有效地防止接触表面的损伤而不使用特殊材料并且即使在滚动机械元件润滑不良时也进行特殊热处理的加工等的滚动机械元件。 解决方案:在用作接触表面的辊的滚动表面上形成凸起,其中接触两个物体的液滴量的总和由对数函数表示。 与在辊的滚动面上设置由局部弧指示的隆起的情况相比,可以减少接触面的局部接触压力,难以发生磨损。 因此,即使由于润滑剂的微量或低粘度而使润滑膜的膜厚比为3以下,通过使用由对数函数表示液滴量的隆起,接触面的磨损 并且可以防止滚动机械元件的损坏。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Rolling member
    • 滚动会员
    • JP2008164058A
    • 2008-07-17
    • JP2006354171
    • 2006-12-28
    • Ntn CorpNtn株式会社
    • FUJIWARA HIROKIFURUBAYASHI TAKATSUGU
    • F16C33/66F16C33/34F16C33/62
    • PROBLEM TO BE SOLVED: To provide a rolling member allowing a contact part to be separated by lubricating oil even in an operating condition where supply of the lubricating oil to the contact part from the outside can not be expected such as an operating condition frequently causing start and stop, rocking motion, or low speed and high load.
      SOLUTION: A dynamic pressure generation surface having multiple minute dynamic pressure depressions 5 causing dynamic pressure action by presence of lubricating oil is formed on a rolling contact part of this rolling member; lubricating oil storing pockets 4 deeper than the dynamic pressure depressions 5 are made to sprinkle over the dynamic pressure generation surface; a solid lubricating coating 7 is formed on the surface; thereby the lubricating oil is discharged from the deep lubricating oil storing pockets 4 to the dynamic pressure depressions 5 by thermal expansion in starting relative movement to allow a fluid lubricating state to be kept even at a speed without forming a sufficient oil film; and wear in a state where the lubricating oil film is broken is prevented by the solid lubricating coating 7 on the surface.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使在不能期望从外部向接触部供给润滑油的操作条件下,也可以提供一种允许接触部分被润滑油分离的滚动部件,例如操作条件 经常引起起停,摇摆运动,或低速高负荷。 解决方案:在该滚动部件的滚动接触部分上形成具有多个微小动态压力凹陷5的动态压力产生表面,其引起存在润滑油的动态压力作用; 制成比动压力凹部5深的润滑油储存口4,喷洒在动压产生面上; 在表面上形成固体润滑涂层7; 从而通过开始相对运动中的热膨胀将润滑油从深润滑油存储口4排出到动态压力凹陷5,以允许甚至在不形成足够的油膜的情况下保持流体润滑状态; 并且通过表面上的固体润滑涂层7防止润滑油膜破裂的状态下的磨损。 版权所有(C)2008,JPO&INPIT