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    • 7. 发明专利
    • Bearing unit for rolling stock
    • 滚动轴承单元
    • JP2012241879A
    • 2012-12-10
    • JP2011115815
    • 2011-05-24
    • Nsk Ltd日本精工株式会社
    • SUZUKI AIKO
    • F16C35/063B61F15/12F16C19/38
    • F16C35/063F16C19/386F16C2326/10
    • PROBLEM TO BE SOLVED: To provide a bearing unit for a rolling stock can suppressing a rear lid from hitting by edge to an inner ring side and suppressing fretting wear at the contact surface between the rear lid and the inner ring even if the rear lid deforms when it is attached to an axle or during axle rotation.SOLUTION: An axle 50 includes an axle journal part 51 on which an inner ring 22 is capped, and an axle large-diameter part 52 which is larger in diameter than an axle journal part 51 and positioned on the side closer to a wheel than to the axle journal part 51. An annular step part 31 is provided at an inner peripheral surface on the wheel side of a rear lid 30, an recess 33 is provided on the inner ring 22 side of the inner peripheral surface 31a of the annular step part 31. An inner peripheral surface 31a of the annular step part 31 contacts to an outer peripheral surface 52b of the axle large-diameter part 52, and a sidewall surface 31b of the annular step part 31 contacts to an annular flat surface 52a. An axial end face 32 on the inner ring 22 side of the rear lid 30 is formed as a curved surface that extends toward outside in radial direction, in a cross section that penetrates the axle.
    • 要解决的问题:提供一种用于车辆的轴承单元可以抑制后盖从边缘到内圈侧的撞击,并且抑制后盖和内圈之间的接触表面的磨损磨损,即使 后盖在连接到轴上或在车轴旋转时变形。 解决方案:轴50包括轴颈部分51,内环22被盖住在该轴颈部分51上,并且轴大直径部分52的直径大于轴颈部分51并位于靠近一侧的一侧 在后轴承部30的车轮侧的内周面设置有环状台阶部31,在内周面31a的内圈22侧设置有凹部33 环状台阶部31.环状台阶部31的内周面31a与车轴大径部52的外周面52b抵接,环状台阶部31的侧壁面31b与环状台阶部31的环状平坦面52a 。 后盖30的内圈22侧的轴向端面32形成为在穿过轴的横截面中沿径向向外侧延伸的弯曲表面。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Bearing device for railway vehicle
    • 铁路车辆轴承装置
    • JP2011074956A
    • 2011-04-14
    • JP2009224704
    • 2009-09-29
    • Ntn CorpNtn株式会社
    • YAMADA MASAHIROKISHIDA TAKASHI
    • F16C35/063F16C19/38F16C33/76F16C33/78
    • F16C35/063F16C19/386F16C2326/10
    • PROBLEM TO BE SOLVED: To relax stress concentration generated on a rear cover in attachment to an axle in a bearing device for a railway vehicle. SOLUTION: The bearing device for the railway vehicle includes a double row tapered roll bearing, seal devices at axial direction both ends, and a front cover and a rear cover positioning an inner ring in an axial direction. The rear cover includes a fitting surface 41 fitting with the axle 2, a receiving surface abutting on the inner ring in the axial direction and receiving axial fastening force of a bolt, an abutting surface abutting of the axle 2 in the axial direction, a large diameter 44, and a sliding contact surface 45 with a seal lip. A prescribed gap is formed between an inner circumference surface at an axial end side of the fitting surface 41 and the axle 2. A corner 46 at the outer diameter side nearest to an end edge 50 at an axle end side of the fitting surface 41 has a shape including two or more cross sections R. In the concrete, the corner 46 is composed of a first cross section R 47 connecting to the sliding contact surface 45, a second cross section R 48 connecting to the end surface 44a at axle end side of the large diameter 44, and an inclined tapered surface 49 connecting the first cross section R 47 and the second cross section R 48. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题:为了放松在铁路车辆的轴承装置中附接到车轴上的后盖上产生的应力集中。 解决方案:用于铁路车辆的轴承装置包括双列圆锥滚子轴承,轴向两端的密封装置,以及在轴向上定位内圈的前盖和后盖。 后盖包括与轴2配合的装配面41,沿轴向抵接在内圈上的接收面,并承受螺栓的轴向紧固力,轴2与轴向抵接的抵接面,大的 直径44和具有密封唇的滑动接触表面45。 在装配面41的轴向端侧的内周面与轴2之间形成有规定的间隙。在配合面41的轴端侧的最靠近端缘50的外径侧的角部46具有 包括两个或更多个横截面R的形状。在混凝土中,角46由连接到滑动接触表面45的第一横截面R 47和连接到轴端侧的端面44a的第二横截面R 48 的大直径44以及连接第一横截面R 47和第二横截面R 48的倾斜锥面49.版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Sealing structure and bearing device
    • 密封结构和轴承装置
    • JP2010180954A
    • 2010-08-19
    • JP2009025039
    • 2009-02-05
    • Jtekt Corp株式会社ジェイテクト
    • NAKAMURA TAKESHITSUMURA MASATAKA
    • F16J15/04B61F15/26
    • F16C33/7813F16C19/28F16C33/723F16C33/7826F16C2326/10
    • PROBLEM TO BE SOLVED: To provide a sealing structure which makes a lid member easily attachable and detachable, which is excellent in convenience property, whose secular change is small, and which makes it hard for the lid member to detach, and to provide a bearing device having the sealing structure. SOLUTION: Male threads 64 are formed on the outside circumferential surface of an oil thrower 4, which is stationary to an axle 1. Female threads 80 are formed on the inside circumferential surface of a cylindrical portion 70 of the lid member 50 made of a synthetic resin. These female threads 80 are screwed into the male threads 64. Annular grooves 81, 82 are formed on a portion overlapping the male threads 64 in the radial direction on the outside circumference of the cylindrical portion 70. Annular spring members 86, 87 are arranged on the annular grooves 81, 82. The cylindrical portion 70 is urged inward in the radial direction to the oil thrower 4 side by the annular spring member 86, 87. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种密封结构,其使盖构件易于安装和拆卸,其方便性优异,其长度变化小,并且使盖构件难以分离,并且 提供具有密封结构的轴承装置。 解决方案:阳螺纹64形成在固定在轴1上的喷油器4的外周面上。内螺纹80形成在盖构件50的圆筒部70的内周面上 的合成树脂。 这些内螺纹80拧入外螺纹64.环形槽81,82形成在圆筒部分70的外圆周上与径向方向重叠的外螺纹64上的部分上。环形弹簧件86,87布置在 环形槽81,82。圆筒形部分70通过环形弹簧构件86,87沿径向向内推动到喷油器4侧。(C)2010,JPO&INPIT