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    • 64. 发明专利
    • 合成樹脂製保持器および玉軸受
    • 基于合成树脂的支架和球轴承
    • JP2016109173A
    • 2016-06-20
    • JP2014245123
    • 2014-12-03
    • NTN株式会社
    • 辻 直明石田 光
    • F16C19/16F16C33/44F16C33/66F16C33/38
    • F16C19/16F16C33/38F16C33/44F16C33/66
    • 【課題】高速回転域で使用したときに異常発熱と保持器摩耗が生じにくく、また軸受回転中に保持器の振動による異音が生じにくい合成樹脂製保持器を提供する。 【解決手段】合成樹脂製の2枚の環状体10の各対向面11に、玉軸受の玉5を収容する複数のポケット12が周方向に間隔をおいて形成された合成樹脂製保持器において、各ポケット12の周方向両端部には、玉5の外周に沿う第1凹球面25が形成され、各ポケット12の軸方向両端部には、玉5のピッチ円Pよりも外径側で玉5の外周に沿う第2凹球面26と、玉5のピッチ円よりも内径側で玉5の外周に沿って保持器6の半径方向に延びる円筒面27とが形成されている構成を採用する。 【選択図】図6
    • 要解决的问题:提供一种合成树脂类保持器,其在高速旋转区域中使用时几乎不发生异常加热和保持器磨损,并且在轴承旋转期间几乎不发生由于保持器的振动引起的噪声。解决方案:在 合成树脂类保持器,其中在两个合成树脂基环形体10的每个相对表面11上,存储有滚珠轴承的球5的多个凹部12在圆周方向上形成有间隔的两个端部 每个凹槽12的圆周方向,沿着球5的外周形成第一凹入球形表面25; 并且在每个凹部12的轴向的两端部形成有沿着球5的外周侧相对于球5的节圆P的外径侧的第二凹部球面26, 表面27沿着球5的外周在保持器6的径向方向上相对于球5的节圆在内径侧延伸。选择的图示:图6
    • 65. 发明专利
    • Manufacturing method of synthetic resin made cage for rolling bearing
    • 用于滚动轴承的合成树脂球罐的制造方法
    • JP2014142033A
    • 2014-08-07
    • JP2013011833
    • 2013-01-25
    • Nsk Ltd日本精工株式会社
    • SAKANO AKIHIDEKURAMOTO YOSHIKAZU
    • F16C33/38B29C45/26B29L31/00F16C33/46
    • F16C33/38F16C33/46F16C2300/02
    • PROBLEM TO BE SOLVED: To solve a problem that molten resins injected into a cavity are merged once again in a position at an opposite side opposing a resin injection gate and mutually joined, and a weld part is formed, however, since the weld part is merely melted and integrated with the molten resins, there does not occur the uniform mixture of the molten resins, and therefore, the rigidity of the weld part is lowered, in a synthetic resin made cage which is injection-molded in such a manner.SOLUTION: Recesses are formed at an internal peripheral face and an external peripheral face of a cavity in a position at a side opposite to a resin injection gate of the cavity, and the recesses of the internal peripheral face and the external peripheral face are located in positions which are different in circumferential directions and partially overlapped with each other in the circumferential directions.
    • 要解决的问题:为了解决注入空腔中的熔融树脂在与树脂注入口相对的相对侧的位置处再次合并并形成焊接部的问题,但是由于焊接部是 仅熔融并与熔融树脂一体化,熔融树脂的均匀混合物不会发生,因此在以这种方式注射成型的合成树脂制保持架中焊接部的刚性降低。 凹部形成在空腔的与树脂注入口相反侧的位置的内周面和外周面,内周面和外周面的凹部位于 它们在圆周方向上不同,并且在圆周方向上彼此部分重叠。
    • 68. 发明专利
    • Ribbon cage and method for manufacturing the same
    • RIBBON CAGE及其制造方法
    • JP2013221567A
    • 2013-10-28
    • JP2012093508
    • 2012-04-17
    • Nsk Ltd日本精工株式会社
    • ITAGAKI KEITAMIZUSHIMA YUUKIKOBAYASHI KAZUTO
    • F16C33/54F16C19/06
    • F16C33/38F16C19/06F16C33/427F16C33/467F16C43/04F16C2226/54F16C2240/40Y10T29/49691
    • PROBLEM TO BE SOLVED: To improve the characteristics of a joint part formed by a rivet 11a for joining flat parts 12a, 12b of a pair of retainer elements regardless of fluctuation in the volume of the rivet 11a.SOLUTION: A crimping part 19a and a head part 16a of a rivet 11a are configured from protruding parts 24a, 24b and pressing flange parts 23a, 23b, respectively. Inside surfaces of the pressing flange parts 23a, 23b press against outside surfaces of the flat parts 12a, 12b. The protruding parts 24a, 24b are truncated cone shaped, the large diameters of which are on the pressing flange part 23a, 23b side. The diameter dof top parts of the protruding parts 24a, 24b is equal to or less than the inside diameter Rof a circular hole 15, and the outside diameter Dof the pressing flange parts 23a, 23b is equal to or greater than the outside diameter Dof bottom parts of the protruding parts 24a, 24b. Furthermore, the projection amount Lof the pressing flange parts 23a, 23b from the protruding parts 24a, 24b is equal to or less than twice the axial thickness Tof the pressing flange parts 23a, 23b.
    • 要解决的问题:提高由铆钉11a形成的接合部分的特性,用于连接一对保持器元件的平坦部分12a,12b,而与铆钉11a的体积波动无关。解决方案:压接部分19a和 铆钉11a的头部16a分别由突出部24a,24b和按压凸缘部23a,23b构成。 按压凸缘部23a,23b的内表面压靠在平坦部12a,12b的外表面。 突出部24a,24b是截锥形的,其大直径位于按压法兰部23a,23b侧。 突出部24a,24b的顶部直径等于或小于圆孔15的内径Rof,并且按压凸缘部23a,23b的外径D等于或大于底部的外径Dof 突出部24a,24b的一部分。 此外,从突出部24a,24b的按压凸缘部23a,23b的突出量L等于或小于按压凸缘部23a,23b的轴向厚度Tof的两倍。
    • 69. 发明专利
    • Double row ball bearing and pinion shaft support device for vehicle
    • 双滚珠轴承和皮带轴支撑装置
    • JP2013053752A
    • 2013-03-21
    • JP2012279850
    • 2012-12-21
    • Jtekt Corp株式会社ジェイテクト
    • KAWAGUCHI KOSHITAKAHASHI YUZURU
    • F16C33/38F16C19/18F16C33/66
    • F16C19/182F16C19/548F16C33/38F16C33/6674F16C33/6681F16C2361/61
    • PROBLEM TO BE SOLVED: To provide a double row ball bearing whose torque is small and a pinion shaft support device for a vehicle whose operation cost is low.SOLUTION: A radial dimension of a first annular part 150 of a first retainer 140 is larger than the value obtained by adding a radial dimension of a second annular part 151 of the first retainer 140 and a radial dimension of a third annular part 152 of the first retainer 140. A second columnar part 174 of a second retainer 141 has an inner surface constituted of a part of a conical surface increased in the inner diameter thereof as going to the outer side in the axial direction. A liquid inflow suppression part includes an end surface of the radial outer side of the first annular part 150 of the first retainer 140, and a liquid outflow promotion part includes the inner surface of the second columnar part 174 of the second retainer 141.
    • 要解决的问题:提供扭矩小的双列球轴承和操作成本低的用于车辆的小齿轮轴支撑装置。 解决方案:第一保持器140的第一环形部分150的径向尺寸大于通过增加第一保持器140的第二环形部分151的径向尺寸和第三环形部分的径向尺寸而获得的值 第二保持器141的第二柱状部分174具有由沿其轴线方向的外侧的内径增大的锥形表面的一部分构成的内表面。 液体流入抑制部包括第一保持器140的第一环状部150的径向外侧的端面,液体流出促进部包括第二保持器141的第二柱状部174的内表面。

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