WO2010121444A1 - 带轮毂轴承单元的等速万向节总成 - Google Patents

带轮毂轴承单元的等速万向节总成 Download PDF

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Publication number
WO2010121444A1
WO2010121444A1 PCT/CN2009/071922 CN2009071922W WO2010121444A1 WO 2010121444 A1 WO2010121444 A1 WO 2010121444A1 CN 2009071922 W CN2009071922 W CN 2009071922W WO 2010121444 A1 WO2010121444 A1 WO 2010121444A1
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Prior art keywords
hub
joint
fixed end
bearing unit
outer circumference
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PCT/CN2009/071922
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English (en)
French (fr)
Inventor
孙国辉
章国庆
陆建春
陈国军
Original Assignee
万向钱潮股份有限公司
万向集团公司
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Application filed by 万向钱潮股份有限公司, 万向集团公司 filed Critical 万向钱潮股份有限公司
Publication of WO2010121444A1 publication Critical patent/WO2010121444A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0094—Hubs one or more of the bearing races are formed by the hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0005—Hubs with ball bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0015—Hubs for driven wheels
    • B60B27/0021—Hubs for driven wheels characterised by torque transmission means from drive axle
    • B60B27/0026—Hubs for driven wheels characterised by torque transmission means from drive axle of the radial type, e.g. splined key
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0015—Hubs for driven wheels
    • B60B27/0036—Hubs for driven wheels comprising homokinetic joints
    • B60B27/0042—Hubs for driven wheels comprising homokinetic joints characterised by the fixation of the homokinetic joint to the hub

Definitions

  • the present invention relates to a constant velocity joint assembly with a hub bearing unit, and belongs to the technical field of automobile manufacturing.
  • the driving wheel of a car generally uses an ordinary constant velocity joint and a first or second or third generation of wheel bearing units, that is, the bearing unit is press-fitted on the hub, and the universal joint uses the external spline and the inner flower of the hub.
  • the key is matched, and the end face of the universal joint is positioned and matched with the inner end surface of the bearing unit.
  • the connecting structure comprising: a coupling groove formed on the axle of the axle bearing a bearing hub; a slit formed on a circumference of a shaft of the constant velocity joint, the shaft being inserted into the axle bearing hub and connected to the axle bearing hub by a spline; and an elastic file inserted into the slit
  • the elastic file is contracted during insertion of the shaft into the axle bearing hub, and when the elastic file is located on the coupling groove, the elastic file is restored to its original state due to its elasticity and inserted into the coupling groove, thereby The elastic file is located in the coupling groove and the slit.
  • the bearing unit of the above patent is completely assembled on the outer circumference of the hub, and it is necessary to assemble the bearing inner bore on the outer circumference of the hub.
  • the shaft of the universal joint The length is longer, the structure of the universal joint and the hub unit is more complicated and the weight is heavier.
  • the object of the present invention is to provide a small number of parts, a high degree of functional integration of the parts, a small axial dimension, a compact structure of the universal joint and the hub bearing unit, and a small and lightweight wheel hub bearing.
  • the unit's constant velocity joint assembly solves the problems of the prior art, the number of parts is large, the functional integration of the parts is low, the axial dimension of the universal joint is long, and the structure of the universal joint and the hub unit is assembled. Complex, heavy weight and other issues.
  • the above technical object of the present invention is mainly solved by the following technical solutions: It includes a hub, a bearing single The fixed end gimbal, the fixed end gimbal is engaged with the inner spline of the hub by an external spline on the shank, the bearing unit comprising a flanged outer cymbal and two rows of rolling bodies, adjacent The outer circumference of the hub and the outer circumference of the fixed end joint joint together serve as the inner bore of the bearing unit, and a first weir raceway is formed on the outer circumference of the hub for one of the rolling elements to roll, forming a circle on the outer circumference of the fixed end universal joint
  • the second rolling track is used for another row of rolling elements to roll.
  • the invention combines the inner cymbal of the bearing unit by the outer circle of the hub and the outer circle of the universal joint, so that the axial length of the hub can be shortened, that is, the overall length of the hub and the universal joint can be shortened, so that the universal joint
  • the structure is compact and compact and lightweight; in addition, no additional parts are required to form the inner bore of the bearing unit, and the number of parts of the present invention is also reduced.
  • the outer circumference of the flange bearing functions as a coupling hub and a fixed end universal joint, and the assembly of the bearing unit can be completed by loading the fixed end joint into the hub, thereby simplifying the assembly of the present invention. program.
  • the outer diameter of the second raceway on the outer circumference of the fixed end joint is closer to the outer diameter of the other side of the second raceway than the outer diameter of the other end of the second raceway, thereby Axial thrust effect.
  • the fixed end universal joint outer circle is formed with a step corresponding to the end surface of the hub, and the end surface of the hub is in contact with the end surface of the step, so that the assembly between the hub and the fixed end joint is more stable. Prevent the mutual movement between the hub and the fixed end joint.
  • the outer diameter of the first weir of the outer circumference of the hub is closer to the outer diameter of the other side of the first weir of the outer circumference of the fixed end joint, so that Axial thrust of the rolling elements.
  • the outer circumference of the end portion of the hub adjacent to the fixed end joint is formed with an annular groove, and the outer diameter of the bottom of the groove is smaller than the outer diameter of the end of the fixed end joint.
  • an annular groove on the outer circumference of the hub end and a flanged outer wall of the flange form a larger space for accommodating lubricant to accommodate more lubricant.
  • the outer wall of the flanged outer casing is formed with a flange
  • the flange is formed with a plurality of axial mounting holes
  • the flange corresponds to the end face of the hub and the fixed end joint Near the joint.
  • the flanged outer flange of the flange is disposed near the joint of the end face of the hub and the fixed end joint, so that the suspension support of the flange to the hub and the fixed end joint is more uniform.
  • a seal port is respectively disposed between the inner wall of both ends of the flanged outer casing of the bearing unit and the outer circumference of the hub and the outer circumference of the fixed end joint.
  • the invention has a small number of parts, a high degree of functional integration of the parts, and a small axial dimension,
  • the assembly of the joint and the hub bearing unit is compact, compact and lightweight, and easy to assemble.
  • Figure 1 is a schematic view showing the structure of the present invention.
  • Embodiment 1 As shown in FIG. 1, the fixed end joint 1 is engaged with the internal spline of the hub 3 through an external spline on the shank 2, and the bearing unit includes a flanged outer cymbal 4 and two The rolling elements 5, 6, the outer circle of the adjacent hub 3 and the outer circle of the fixed end joint 1 together serve as the inner bore of the bearing unit, and a first weir raceway 7 is formed on the outer circumference of the hub 3 for one of The rolling elements 5 roll, and a second winding race 8 is formed on the outer circumference of the fixed end joint 1 for the other row of rolling bodies 6 to roll.
  • the outer diameter ⁇ 1 of the first weir raceway 7 of the outer circumference of the hub 3 near the fixed end joint 1 is smaller than the outer diameter ⁇ 2 of the other side of the first raceway of the outer circumference of the hub, and the outer end of the fixed end joint 1
  • the outer diameter ⁇ 3 of the upper second raceway 8 on the side closer to the end of the hub is smaller than the outer diameter ⁇ 4 of the other side of the second raceway;
  • the outer circumference of the fixed end joint joint 1 is formed with a step 9 corresponding to the position of the end face of the hub,
  • the end surface 10 of the hub 3 is in contact with the end surface of the step 9.
  • the outer circumference of the end portion of the hub 3 adjacent to the fixed end joint 1 is formed with an annular groove 11 having an outer diameter smaller than that of the fixed end joint 1
  • the outer diameter of the end is formed with a flange 12, and the flange is formed with a plurality of axial mounting holes 13 corresponding to the vicinity of the end face of the hub 3 and the joint of the fixed end joint 1
  • the sealing cymbal 14 is respectively disposed between the inner wall of the flanged outer cymbal 4 of the bearing unit and the outer circumference of the hub and the outer circumference of the fixed end joint.
  • the inner ring of the bearing unit is composed of the outer circle of the hub and the outer circle of the universal joint, respectively, so that the axial length of the hub can be shortened, that is, the overall length of the hub and the universal joint can be shortened, so that the universal direction
  • the assembly of the joint and the bearing unit is compact and compact and lightweight; in addition, no additional parts are required to form the inner bore of the bearing unit, and the number of parts of the present invention is also reduced.
  • the outer circumference of the flange bearing functions as a coupling hub and a fixed end universal joint, and the assembly of the bearing unit can be completed by loading the fixed end joint into the hub, thereby simplifying the assembly of the present invention. program.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

带轮毂轴承单元的等速万向节总成
技术领域
本发明涉及一种带轮毂轴承单元的等速万向节总成， 属于汽车生产制造的技术 领域。
背景技术
目前轿车的驱动轮上一般釆用普通的等速万向节和第一或二、 三代轮毂轴承单 元相配合， 即轴承单元压装在轮毂上， 万向节釆用外花键与轮毂内花键配合， 万向节定位端面与轴承单元的内圏端面定位配合。
[3] 如一种用于轮轴轴承和等速万向节的连接结构 （专利号： CN200410081753 .
6) ， 其中通过使用摆辗成形工艺或挤锻工艺来使材料塑性变形， 以使得轮轴轴 承和等速万向节进行连接和装配， 该连接结构包括： 联接槽， 其形成在轮轴轴 承的轮轴轴承毂上； 切口， 其形成在等速万向节的轴的圆周上， 上述轴插入到 轮轴轴承毂中， 并通过花键与轮轴轴承毂相连接； 以及弹性档圏， 其插入到切 口中， 该弹性档圏在将轴插入轮轴轴承毂的过程中被收缩， 且当弹性档圏位于 联接槽上吋， 该弹性档圏因其弹性而恢复到原来的状态并插入到联接槽内， 从 而该弹性档圏同吋位于联接槽和切口中。 上述专利的轴承单元完全装配在轮毂 的外圆上， 需要在轮毂外圆上装配轴承内圏， 其一方面存在零件数量较多， 零 件的功能集成度较低， 另一方面万向节的轴向尺寸较长， 万向节与轮毂单元装 配后结构较为复杂， 重量较重。
发明内容
[4] 本发明目的在于提供一种零件数量较少， 零件的功能集成度较高， 轴向尺寸较 小， 万向节与轮毂轴承单元装配后结构较为紧凑， 能小型轻量化的带轮毂轴承 单元的等速万向节总成， 解决了现有技术存在的零件数量较多， 零件的功能集 成度较低， 万向节的轴向尺寸较长， 万向节与轮毂单元装配后结构较为复杂， 重量较重等问题。
[5] 本发明的上述技术目的主要是通过以下技术方案解决的： 它包括轮毂、 轴承单 元和固定端万向节， 固定端万向节通过其柄部上的外花键与轮毂的内花键配合 ， 所述轴承单元包括法兰盘式外圏和两排滚动体， 相邻的轮毂外圆和固定端万 向节外圆共同作为轴承单元的内圏， 在轮毂外圆上形成第一圏滚道供其中一排 滚动体滚动， 在固定端万向节的外圆上形成第二圏滚道供另一排滚动体滚动。 本发明将轴承单元的内圏分别由轮毂的外圆和万向节的外圆共同构成， 从而可 缩短轮毂的轴向长度， 即达到了缩短轮毂和万向节的整体长度， 使万向节与轴 承单元装配后结构较为紧凑， 且能小型轻量化； 另外， 无需另外的零件来构成 轴承单元的内圏， 也减少了本发明的零件数量。 其中， 法兰盘式轴承外圆起到 了联结轮毂和固定端万向节的作用， 在将固定端万向节装入轮毂的同吋即可完 成轴承单元的装配， 从而简化了本发明的装配程序。
[6] 作为优选， 所述固定端万向节外圆上的第二滚道靠近于轮毂端部一侧的外径小 于第二滚道另一侧的外径， 从而可起到对滚动体的轴向止推作用。
[7] 作为优选， 所述固定端万向节外圆对应于轮毂端面的位置形成有台阶， 轮毂端 面与台阶的端面相接触， 从而可使轮毂与固定端万向节之间装配更加稳定， 防 止轮毂与固定端万向节之间的相互窜动。
[8] 作为优选， 所述轮毂外圆的第一圏滚道靠近固定端万向节一侧的外径小于轮毂 外圆的第一圏滚道另一侧的外径， 从而可起到对滚动体的轴向止推作用。
[9] 作为优选， 所述轮毂与固定端万向节相邻的端部外圆形成有环形凹槽， 所述凹 槽底部的外径小于固定端万向节的端部外径。 其中， 轮毂端部外圆上的环形凹 槽与法兰盘式外圏内壁之间可形成更大的容纳润滑剂的空间， 以容纳更多的润 滑剂。
[10] 作为优选， 所述法兰盘式外圏的外壁形成有法兰盘， 所述法兰盘上形成有若干 轴向的安装孔， 法兰盘对应于轮毂端面与固定端万向节接合处附近。 其中， 将 法兰盘式外圏的法兰盘设置在轮毂端面与固定端万向节接合处附近可使法兰盘 对轮毂和固定端万向节的悬挂支撑受力更为均匀。
[11] 作为优选， 所述轴承单元的法兰盘式外圏的两端内壁与轮毂外圆及固定端万向 节外圆之间分别设有密封圏。
[12] 因此， 本发明具有零件数量较少， 零件的功能集成度较高， 轴向尺寸较小， 万 向节与轮毂轴承单元装配后结构较为紧凑， 能小型轻量化， 装配方便等特点。 附图说明
[13] 图 1是本发明的一种结构示意图。
最佳实施方式
[14] 下面通过实施例， 并结合附图， 对本发明的技术方案作进一步具体的说明。
[15] 实施例 1 : 如图 1所示， 固定端万向节 1通过其柄部 2上的外花键与轮毂 3的内花 键配合， 轴承单元包括法兰盘式外圏 4和两排滚动体 5、 6， 相邻的轮毂 3的外圆 和固定端万向节 1的外圆共同作为轴承单元的内圏， 在轮毂 3的外圆上形成第一 圏滚道 7供其中一排滚动体 5滚动， 在固定端万向节 1的外圆上形成第二圏滚道 8 供另一排滚动体 6滚动。 轮毂 3外圆的第一圏滚道 7靠近固定端万向节 1一侧的外 径 Φ1小于轮毂外圆的第一圏滚道另一侧的外径 Φ2， 固定端万向节 1外圆上的第 二滚道 8靠近于轮毂端部一侧的外径 Φ3小于第二滚道另一侧的外径 Φ4; 固定端 万向节 1外圆对应于轮毂端面的位置形成有台阶 9， 轮毂 3的端面 10与台阶 9的端 面相接触， 轮毂 3与固定端万向节 1相邻的端部外圆形成有环形凹槽 11， 凹槽 11 底部的外径小于固定端万向节 1的端部外径。 法兰盘式外圏 4的外壁形成有法兰 盘 12， 法兰盘上形成有若干轴向的安装孔 13， 法兰盘 12对应于轮毂 3的端面与固 定端万向节 1接合处附近， 轴承单元的法兰盘式外圏 4的两端内壁与轮毂外圆及 固定端万向节外圆之间分别设有密封圏 14。
[16] 将轴承单元的内圏分别由轮毂的外圆和万向节的外圆共同构成， 从而可缩短轮 毂的轴向长度， 即达到了缩短轮毂和万向节的整体长度， 使万向节与轴承单元 装配后结构较为紧凑， 且能小型轻量化； 另外， 无需另外的零件来构成轴承单 元的内圏， 也减少了本发明的零件数量。 其中， 法兰盘式轴承外圆起到了联结 轮毂和固定端万向节的作用， 在将固定端万向节装入轮毂的同吋即可完成轴承 单元的装配， 从而简化了本发明的装配程序。

Claims

权利要求书
一种带轮毂轴承单元的等速万向节总成， 包括轮毂、 轴承单元和固定 端万向节， 其特征在于： 固定端万向节通过其柄部上的外花键与轮毂 的内花键配合， 所述轴承单元包括法兰盘式外圏和两排滚动体， 相邻 的轮毂外圆和固定端万向节外圆共同作为轴承单元的内圏， 在轮毂外 圆上形成第一圏滚道供其中一排滚动体滚动， 在固定端万向节的外圆 上形成第二圏滚道供另一排滚动体滚动。
根据权利要求 1所述的带轮毂轴承单元的等速万向节总成， 其特征在 于所述固定端万向节外圆上的第二滚道靠近于轮毂端部一侧的外径小 于第二滚道另一侧的外径。
根据权利要求 1或 2所述的带轮毂轴承单元的等速万向节总成， 其特征 在于所述固定端万向节外圆对应于轮毂端面的位置形成有台阶， 轮毂 端面与台阶的端面相接触。
根据权利要求 1或 2所述的带轮毂轴承单元的等速万向节总成， 其特征 在于所述轮毂外圆的第一圏滚道靠近固定端万向节一侧的外径小于轮 毂外圆的第一圏滚道另一侧的外径。
根据权利要求 1或 2所述的带轮毂轴承单元的等速万向节总成， 其特征 在于所述轮毂与固定端万向节相邻的端部外圆形成有环形凹槽， 所述 凹槽底部的外径小于固定端万向节的端部外径。
根据权利要求 1或 2所述的带轮毂轴承单元的等速万向节总成， 其特征 在于所述法兰盘式外圏的外壁形成有法兰盘， 所述法兰盘上形成有若 干轴向的安装孔， 法兰盘对应于轮毂端面与固定端万向节接合处附近 根据权利要求 1或 2所述的带轮毂轴承单元的等速万向节总成， 其特征 在于所述轴承单元的法兰盘式外圏的两端内壁与轮毂外圆及固定端万 向节外圆之间分别设有密封圏。
PCT/CN2009/071922 2009-04-21 2009-05-22 带轮毂轴承单元的等速万向节总成 WO2010121444A1 (zh)

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CN104802593B (zh) * 2015-04-16 2017-01-25 南京航空航天大学 轮毂轴承单元
CN107215206A (zh) * 2016-03-22 2017-09-29 陕西通力专用汽车有限责任公司 宽体矿用汽车传动器及其安装方法、宽体矿用汽车
CN107269725B (zh) * 2017-06-13 2020-03-06 北京新能源汽车股份有限公司 一种驱动轴总成及汽车

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