WO2025208271A1 - 密封环、支柱轴承组件及安装方法 - Google Patents
密封环、支柱轴承组件及安装方法Info
- Publication number
- WO2025208271A1 WO2025208271A1 PCT/CN2024/085198 CN2024085198W WO2025208271A1 WO 2025208271 A1 WO2025208271 A1 WO 2025208271A1 CN 2024085198 W CN2024085198 W CN 2024085198W WO 2025208271 A1 WO2025208271 A1 WO 2025208271A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sealing
- sealing ring
- plug
- ring
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
Definitions
- the present disclosure provides a sealing ring, comprising an annular sealing body, the sealing body comprising: a sealing lip; and an annular sealing plug located at one axial end of the sealing body, wherein along the circumference of the sealing plug, the inner wall and the outer wall of the sealing plug are provided with barbs.
- the radial deformation of the sealing plug is 5% to 40%.
- the outer wall of the sealing plug is provided with multiple circles of axially spaced outer barbs; the inner wall of the sealing plug is provided with multiple circles of axially spaced inner barbs; wherein the outer barbs and the inner barbs correspond to each other in the axial direction.
- the sealing lips are respectively provided at both radial ends of the sealing body, and the bending directions of the sealing lips are the same.
- the sealing ring is integrally formed of rubber material.
- the present disclosure provides a strut bearing assembly, comprising: a first shell; a second shell, wherein the second shell is provided with an annular plug hole near the end face of the first shell; a bearing, axially supported between the first shell and the second shell, for enabling relative rotation between the first shell and the second shell; and a sealing ring as described in the first aspect, wherein the sealing plug of the sealing ring is plugged into the annular plug hole of the second shell, and the sealing lip of the sealing ring is in dynamic sealing contact with the first shell.
- the ratio of the radial dimension of the annular plug hole to the radial dimension of the sealing plug ranges from 60% to 95%.
- the sealing ring includes: a first sealing ring, the first sealing ring being located radially outside the bearing; and/or a second sealing ring, the second sealing ring being located radially inside the bearing.
- the sealing lip of the first sealing ring is a radial sealing lip
- the sealing lip of the second sealing ring is an axial sealing lip
- the present disclosure provides an installation method for installing the pillar bearing assembly as described in the second aspect, comprising the following steps: Step 1: Fix the inner ring of the pillar bearing on the second shell, and install the roller and outer ring in sequence; Step 2: Insert the sealing plug of the sealing ring into the annular plug hole of the second shell, and the sealing lip of the sealing ring is located outside the annular plug hole; Step 3: axially buckle the first shell on the outer ring of the pillar bearing, and dynamically seal with the sealing lip of the sealing ring, wherein the execution order of Step 1 and Step 2 is not particular.
- the sealing ring includes a first sealing ring and/or a second sealing ring
- the second housing includes two annular plug holes respectively located radially inside and radially outside the support bearing.
- step two the sealing plug of the first sealing ring is inserted into the annular plug hole located radially outside; and/or the sealing plug of the second sealing ring is inserted into the annular plug hole located radially inside.
- the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: when the sealing ring seals the pillar bearing, the sealing plugs with barbs on both the outer wall and the inner wall can ensure that the sealing ring can be firmly fixed in one of the shells of the pillar bearing, preventing the sealing ring from detaching from the shell of the pillar bearing, and ensuring that the sealing ring has good sealing performance and installation performance.
- the sealing lip is located at the first end of the sealing body and is used for dynamic sealing with the other shell of the pillar bearing.
- This sealing structure has a small friction torque, and can seal the grease inside the pillar bearing, and keep pollutants and muddy water on the outside of the sealing ring, ensuring that the sealing ring has good sealing performance.
- FIG1 is a schematic cross-sectional view of a strut bearing assembly according to an exemplary embodiment.
- FIG2 is a partial enlarged view of portion A in FIG1 .
- the first barb surface 443 is arranged close to the sealing lip 42, and the angle between the first barb surface 443 and the sealing plug 43 is a first angle ⁇ ;
- the second barb surface 444 is arranged away from the sealing lip 42, and the angle between the second barb surface 444 and the sealing plug 43 is a second angle ⁇ , wherein the first angle ⁇ and the second angle ⁇ are both obtuse angles, and the first angle ⁇ is smaller than the second angle ⁇ .
- the outer barbs 442 and the inner barbs 441 are each provided with three circles, and the three circles of barbs 44 are all provided with equal or unequal intervals along the axial direction.
- the three circles of outer barbs 442 and inner barbs 441 can make the installation performance and production cost of the sealing ring 40 moderate.
- the outer barbs 442 and inner barbs 441 are symmetrically arranged. That is, the outer barbs 442 and inner barbs 441 are aligned in the axial direction A, rather than being staggered.
- the symmetrical arrangement of the outer barbs 442 and inner barbs 441 provides improved sealing performance while also reducing the difficulty of manufacturing the sealing ring 40.
- a sealing ring 40 is provided on the radially outer side and/or radially inner side of the pillar bearing, that is, the sealing ring 40 can be provided only on the radially outer side of the pillar bearing, or the sealing ring 40 can be provided only on the radially inner side of the pillar bearing, or the sealing ring 40 can be provided on both the radially inner side and the radially outer side of the pillar bearing.
- the radial outer side of the support bearing 30 can be provided with multiple sealing rings according to the sealing requirements.
- multiple sealing rings 40 may be provided radially inwardly of the strut bearing 30, and this is not specifically limited herein.
- the structures of the sealing rings 40 located radially inwardly and/or the sealing rings 40 located radially outwardly may be identical or different, and this is not specifically limited herein.
- a sealing ring 40 is provided on the radially outer side and the radially inner side of the strut bearing: a first sealing ring 45 (on the left side as shown in Figure 2) and a second sealing ring 46 (on the right side as shown in Figure 2), and the structures of the first sealing ring 45 and the second sealing ring 46 are different.
- the sealing plugs 43 of the first sealing ring 45 and the second sealing ring 46 are the same, but the sealing body and the sealing lip 42 of the first sealing ring 45 are different in structure from the sealing body and the sealing lip 42 of the second sealing ring 46.
- the structure of the sealing body and the sealing lip of the first sealing ring 45 and the second sealing ring 46 is related to the shape of the channel formed between the first shell 10 and the second shell 20 when the first shell 10 is buckled onto the second shell 20. Therefore, in this embodiment, the structure of the sealing body and the sealing lip of the first sealing ring 45 and the second sealing ring 46 is only exemplary and is not used to limit the scope of protection of the present disclosure.
- the structure of the sealing body and the sealing lip of the first sealing ring 45 and the second sealing ring 46 may also be different according to the shape of the channel, which is not specifically limited here.
- the first sealing ring 45 has two sealing lips 42: one located radially outward of the radial sealing body 412, and one located at the upper end of the axial sealing body 411. Furthermore, when installing the entire pillar bearing assembly 100, the inner ring 32 of the pillar bearing 30 can be secured to the second housing 20, and then the roller 33 and outer ring 31 can be installed. Simultaneously, the sealing plug 43 of the sealing ring 40 can be inserted into the annular plug hole 21 of the second housing 20. Finally, the first housing 10 can be axially buckled onto the outer ring 31 of the pillar bearing 30 from top to bottom.
- the pillar bearing 30 can be torsionally connected to the outer wall of the second shell 20.
- the second shell 20 includes a groove for installing the inner ring 32 of the pillar bearing 30.
- the inner ring 32 is located in the groove of the second shell 20, and the inner ring 32 can be axially limited to avoid axial movement of the pillar bearing 30.
- the sealing ring 40 includes two sealing rings, a first sealing ring 45 and a second sealing ring 46
- the second housing 20 also includes two annular plug holes 21, which are respectively located radially inward and radially outward of the inner ring 32 of the pillar bearing 30.
- the sealing plug 43 of the first sealing ring 45 is inserted into the annular plug hole 21 located radially outward
- the sealing plug 43 of the second sealing ring 46 is inserted into the annular plug hole 21 located radially inward, so that the pillar bearing 30 can be dynamically sealed from both radial sides.
- the first housing 10 is axially pressed against the second housing 20, and the radially outer sides of the second housing 20 and the first housing 10 form an axially extending opening. That is, the opening 22 at the edges of the first and second housings 10, 20, extends axially and faces downward (as seen from the bottom in Figure 2 ).
- the first sealing ring 45 has two sealing lips 42, both of which bend toward the opening 22. That is, both sealing lips 42 are tilted toward the lower left as viewed in Figure 2 .
- the sealing lips 42 of the first sealing ring 45 located radially outward of the strut bearing 30, are radial sealing lips, preventing axial moisture, dust, and other particles from radially invading the strut bearing 30 and preventing radial leakage of grease within the strut bearing 30.
- the sealing lips 42 of the first sealing ring 45 and the sealing lips 42 of the second sealing ring 46 extend radially and axially away from the pillar bearing 30, on the one hand, to prevent external moisture and impurities from entering the pillar bearing 30, and on the other hand, the bending direction of the sealing lips 42 is
- the first shell 10 generates resistance in the direction axially away from the second shell 20 to prevent the first shell 10 from axially separating from the second shell 20, and also generates resistance in the direction radially away from the second shell 20 to prevent the first shell 10 and the second shell 20 from being misaligned in the radial direction.
- the structure of the sealing body of the first sealing ring 45 and the bending direction of the sealing lip 42 shown in Figure 2 are only exemplary. Those skilled in the art can make changes based on the specific structure at the edges of the first shell 10 and the second shell 20 or the installation position of the sealing ring 40, and are not limited to the structure shown in the figure.
- the present disclosure provides a pillar bearing assembly 100 .
- the specific manner in which the functions of the pillar bearing assembly 100 are implemented has been described in detail in the embodiment of the sealing ring 40 and will not be elaborated on here.
- the first housing 10 of the pillar bearing assembly 100 may be integrally formed with the outer ring 31 of the pillar bearing 30, and the second housing 20 of the pillar bearing assembly 100 may be integrally formed with the inner ring 32 of the pillar bearing 30. Therefore, the sealing lip 42 of the sealing ring 40 may also be defined as being in dynamic sealing contact with the outer ring 31 of the pillar bearing 30.
- the inner ring 32 of the pillar bearing 30 is provided with an annular plug hole 21 for installing a sealing plug 43.
- the first sealing ring 45 and the second sealing ring 46 are respectively provided on radial sides of the roller 33.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
一种密封环(40)、支柱轴承组件(100)及安装方法。密封环(40)包括呈环状的密封本体(41),密封本体(41)包括:密封唇(42);以及呈环形的密封塞子(43),位于密封本体(41)的轴向一端,沿密封塞子(43)的周向上,密封塞子(43)的内壁和外壁均设置有倒刺(44)。密封环(40)密封支柱轴承(30)时,外壁和内壁均设有倒刺(44)的密封塞子(43)可以保证密封环(40)能够牢固地固定在支柱轴承(30)的其中一壳体内。
Description
本公开涉及支柱轴承密封技术领域,尤其涉及一种密封环、支柱轴承组件及安装方法。
相关技术中,支柱轴承所支撑的第一壳体和第二壳体的边缘处通常采用迷宫式密封方法,例如,第一壳体和第二壳体的边缘沿轴向交叉,在这种密封下,第一壳体和第二壳体不接触,因此没有摩擦扭矩,但密封性能非常差。
在其他的相关技术中,用于密封支柱轴承的密封件由热塑性弹性体(Thermoplastic Elastomer,简称TPE)制成,它直接硫化在塑料的支柱轴承环(即第一壳体和第二壳体)上。在这种情况下,制造过程非常复杂,成本非常高。而且因为TPE材料比橡胶硬得多,因此支柱轴承支撑的第一壳体和第二壳体之间的摩擦扭矩非常大。
发明内容
为克服相关技术中存在的问题,本公开提供一种密封环、支柱轴承组件及安装方法。
根据本公开实施例的第一方面,本公开提供一种密封环,包括呈环状的密封本体,所述密封本体包括:密封唇;以及呈环形的密封塞子,位于所述密封本体的轴向一端,其中,沿所述密封塞子的周向上,所述密封塞子的内壁和外壁均设置有倒刺。
在一些实施例中,所述倒刺包括:第一倒刺面,所述第一倒刺面靠近所述密封唇设置,所述第一倒刺面与所述密封塞子的夹角为第一夹角;以及第二倒刺面,所述第二倒刺面背离所述密封唇设置,所述第二倒刺面与
所述密封塞子的夹角为第二夹角,其中,所述第一夹角和所述第二夹角均为钝角,且所述第一夹角小于所述第二夹角。
在一些实施例中,所述密封塞子沿径向的变形量为5%~40%。
在一些实施例中,所述密封塞子的外壁设置有多圈轴向间隔的外倒刺;所述密封塞子的内壁设置有多圈轴向间隔的内倒刺;其中,所述外倒刺和所述内倒刺在轴向上对应。
在一些实施例中,所述密封本体的径向两端分别设置有所述密封唇,且所述密封唇的弯折方向相同。
在一些实施例中,所述密封环整体由橡胶材料一体成型。
根据本公开实施例的第二方面,本公开提供一种支柱轴承组件,包括:第一壳体;第二壳体,所述第二壳体靠近所述第一壳体的端面设置有环形塞孔;轴承,沿轴向支撑在所述第一壳体和所述第二壳体之间,用于使所述第一壳体和所述第二壳体之间相对转动;以及如第一方面所述的密封环,所述密封环的所述密封塞子塞入所述第二壳体的环形塞孔内,所述密封环的所述密封唇与所述第一壳体动态密封抵接。
在一些实施例中,所述环形塞孔的径向尺寸与所述密封塞子的径向尺寸的比值范围为60%~95%。
在一些实施例中,所述密封环包括:第一密封环,所述第一密封环位于所述轴承的径向外侧;和/或第二密封环,所述第二密封件位于所述轴承的径向内侧。
在一些实施例中,所述第一密封环的密封唇为径向密封唇,所述第二密封环的密封唇为轴向密封唇。
根据本公开实施例的第三方面,本公开提供一种安装方法,用于安装如第二方面所述的支柱轴承组件,包括以下步骤:步骤一:将支柱轴承的内圈固定在第二壳体,并依次安装滚子和外圈;步骤二:将所述密封环的密封塞子塞入所述第二壳体的环形塞孔内,所述密封环的密封唇位于所述环形塞孔的外部;步骤三,将所述第一壳体沿轴向扣在所述支柱轴承的所述外圈上,并与所述密封环的密封唇动态密封抵接,其中,步骤一和步骤二的执行顺序不分先后。
在一些实施例中,所述密封环包括第一密封环和/或第二密封环,所述第二壳体包括分别位于所述支撑轴承的径向内侧和径向外侧的两个环形塞孔,在所述步骤二中,将所述第一密封环的密封塞子塞入位于径向外侧的环形塞孔内;和/或将第二密封环的密封塞子塞入位于径向内侧的环形塞孔内。
本公开的实施例提供的技术方案可以包括以下有益效果:密封环密封支柱轴承时,外壁和内壁均设有倒刺的密封塞子可以保证密封环能够牢固地固定在支柱轴承的其中一壳体内,避免密封环脱离支柱轴承的该壳体,可以保证密封环具有良好的密封性能和安装性能,密封唇位于密封本体的第一端,用于与支柱轴承的另一壳体动态密封,这种密封结构摩擦力矩小,且可以密封支柱轴承内部的油脂,并将污染物和浑水保持在密封环的外部,保证密封环具有良好的密封性能。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种支柱轴承组件剖视结构示意图。
图2是图1中A部的局部放大图。
图3是图2中密封环的密封塞子的局部放大示意图。
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
在本发明中,除非另有说明,否则轴向A、径向R和周向分别是指密封环的轴向A、径向R和周向;第一端是指图1、图2中的上端,第二端
是指图1、图2中的下侧;径向外侧是指在径向上远离图1中的中心轴线O的那侧(图2中的左侧),径向内侧是指在径向上接近该中心轴线O的那侧(图2中的右侧)。另外,“抗扭连接”,是指两个部件之间可以传递扭矩,并且实现抗扭矩连接的方式可以包括过盈配合以及螺栓连接等等。
为解决上述技术问题,本公开提供一种密封环40,密封环40应用于支柱轴承组件100中,其中,支柱轴承组件100具体可以为悬架轴承组件。
具体地,如图1和图2所示,支柱轴承组件100包括第一壳体10、第二壳体20、支柱轴承30和密封环40,支柱轴承30沿轴向A支撑在第一壳体10和第二壳体20之间,从而使第一壳体10和第二壳体20轴向间隔。其中,支柱轴承30可以为深沟球轴承,支柱轴承30包括外圈31、内圈32和滚子33,外圈31可以与第一壳体10抗扭连接,内圈32可以与第二壳体20固定连接,内圈32和外圈31的相对转动,从而实现第一壳体10和第二壳体20可以沿周向绕中心轴线O相对转动。在本实施例中,可以视第二壳体20为固定的壳体,第一壳体10视为通过支柱轴承30相对于第二壳体20进行转动的壳体。
进一步地,密封环40用于对支柱轴承组件100中的支柱轴承30进行密封,密封环40可以设置两个,沿径向分别位于支柱轴承30的径向外侧和径向内侧,用于在支柱轴承30的径向两侧密封支柱轴承30内部的油脂避免泄露,并将污染物、砂砾和污水等阻挡在密封环40的外部。
如图2所示,密封环40包括密封本体41,密封本体41包括密封唇42和密封塞子43,在轴向A上,密封唇42可以位于密封本体41的第一端(如图2所示的上端),用于与支柱轴承组件100的第一壳体10抵接,本公开的密封环40的密封唇42可以实现动态密封,可以保证密封环40具有良好的密封性能,同时可减小第一壳体10和第二壳体20相对转动时产生的摩擦阻力。
密封塞子43可以固定于密封本体41的第二端(如图2所示的下端),第二壳体20靠近第一壳体10的端面设置有环形塞孔21,密封塞子
43则通过安装固定于第二壳体20的环形塞孔21内,以使整个密封环40固定在第二壳体20。
进一步地,沿整个密封环40的周向上,密封塞子43的内壁和外壁均设置有倒刺44,位于密封塞子43内壁的倒刺44可以为内倒刺441,位于密封塞子43外壁的倒刺44可以为外倒刺442。
密封塞子43的倒刺44结构朝密封唇42的方向倾斜,因此在密封塞子43塞入第二壳体20的环形塞孔21内时,倒刺44可以朝密封塞子43的柱体弯折或者变形,有利于密封塞子43塞入环形塞孔21。当密封塞子43一旦塞入环形塞孔21内,倒刺44的结构可以给密封塞子43轴向的阻力,防止密封塞子43沿轴向脱离环形塞孔21,可知密封环40密封支柱轴承30时,外壁和内壁均设有倒刺44的密封塞子43可以保证密封环40能够牢固地固定在支柱轴承30的第二壳体20内,避免密封环40脱离支柱轴承30的第二壳体20,可以保证密封环40具有良好的安装性能。
需要说明的是,术语“第一”、“第二”等用于描述各种结构,但这些结构不应限于这些术语。这些术语仅用来将同一类型的结构彼此区分开,并不表示特定的顺序或者重要程度。实际上,“第一”、“第二”等表述完全可以互换使用。例如,在不脱离本公开范围的情况下,第一壳体10也可以被称为第二壳体20,类似地,第二壳体20也可以被称为第一壳体10。
另外,本公开的密封环40的密封唇42与第一壳体10动态密封,密封塞子43固定于第二壳体20,在其他一些实施例中,密封环40的密封塞子43可以固定于第一壳体10,使密封唇42与第二壳体20动态密封,在此不再赘述。
在本实施例中,如图3所示,倒刺44包括第一倒刺面443和第二倒刺面444。
其中,第一倒刺面443靠近密封唇42设置,第一倒刺面443与密封塞子43的夹角为第一夹角α;第二倒刺面444背离密封唇42设置,第二倒刺面444与密封塞子43的夹角为第二夹角β,其中,第一夹角α和第二夹角β均为钝角,且第一夹角α小于第二夹角β。
在本实施例中,第一夹角α也呈钝角,使得倒刺44与密封塞子43柱体的连接处的尺寸大,避免倒刺44弯折断裂。同时,第一夹角α呈钝角,使的倒刺44更平缓,当密封塞子43塞入第二壳体20的塞孔21内时,更有利于倒刺44可以沿径向被压缩,实现径向R上的弹性变形,使密封塞子43能够与塞孔21更好地抵接,增大密封塞子43与塞孔21的连接强度。
同时,密封塞子43沿径向的变形量=(W2-W1)/W2,其中变形量为5%~40%。其中,如图3所示,W2为带有倒刺44的密封塞子43的初始宽度,W1为环形塞孔21内径的宽度。该变形量可以保证密封塞子43的结构不被破坏,还也可以使密封环40具有更好的密封性能。同理,当密封塞子43在塞入环形塞孔21时,环形塞孔21的径向尺寸与密封塞子43的径向尺寸的比值范围为60%~95%。
在本实施例中,密封塞子43的外壁设置有多圈轴向A间隔的外倒刺442;密封塞子43的内壁设置有多圈轴向A间隔的内倒刺441。即本实施例中的内倒刺441和外倒刺442是呈环状的,并非零散的布置在密封塞子43的内壁或外壁,如此,可以提高倒刺44的韧性和强度,倒刺44不易断裂。
此外,在本实施例中,外倒刺442和内倒刺441分别设置有三圈,且三圈倒刺44均是沿轴向等间隔或非等间隔设置的。三圈的外倒刺442和内倒刺441,可以使密封环40的安装性能和生产成本适中。
进一步地,在本实施例中,如图2和图3所示,外倒刺442和内倒刺441对称设置。即外倒刺442和内倒刺441在轴向A上是平齐的对应的,并非交错设置。对称设置的外倒刺442和内倒刺441,具有更好的密封性能,同时还降低了生产密封环40的难度。
在一些实施例中,支柱轴承的径向外侧和/或径向内侧设置有密封环40,即可以只在支柱轴承的径向外侧设置密封环40,也可以只在支柱轴承的径向内侧设置密封环40,也可以在支柱轴承的径向内侧和径向外侧均设置有密封环40。
另外,支柱轴承30的径向外侧可以根据密封要求,设置多个密封环
40,同理,支柱轴承30的径向内侧也可以设置多个密封环40,在此也不作具体限定。进一步地,位于径向内侧的密封环40和/或位于径向外侧的密封环40的结构可以相同,也可以不同,在此不作具体限定。
在本实施例中,如图1和图2所示,支柱轴承的径向外侧和径向内侧各设置有一个密封环40:第一密封环45(如图2所示的左侧)和第二密封环46(如图2所示的右侧),且第一密封环45和第二密封环46的结构不同。
具体地,第一密封环45和第二密封环46的密封塞子43相同,但第一密封环45的密封本体和密封唇42均与第二密封环46的密封本体和密封唇42的结构不同,需要说明的是,第一密封环45和第二密封环46的密封本体和密封唇的结构与第一壳体10扣盖在第二壳体20时第一壳体10和第二壳体20之间形成的通道的形状有关,因此,在本实施例中,第一密封环45和第二密封环46的密封本体和密封唇的结构只是示例性的,并非用以限定本公开的保护范围,第一密封环45和第二密封环46的密封本体以及密封唇的结构也可以根据通道形状的不同而不同,在此不作具体限定。
如图2所示,在本实施例中,根据第一壳体10和第二壳体20之间的通道形状,第一密封环45的密封本体呈L型,包括径向密封本体412和轴向密封本体411,轴向密封本体411连接在径向密封本体412的径向内侧。
第一密封环45的密封唇42设置有两个,一个密封唇42位于径向密封本体412的径向外侧,一个密封唇42位于轴向密封本体411的上端。进一步地,在支柱轴承组件100整体在安装时,将支柱轴承30的内圈32可以固定在第二壳体20,然后安装滚子33和外圈31,与此同时,将密封环40的密封塞子43可以同时塞入第二壳体20的环形塞孔21内,最后,再将第一壳体10沿轴向由上而下扣在支柱轴承30的外圈31上。
其中,支柱轴承30可以与第二壳体20的外壁抗扭连接,在本实施例中,第二壳体20包括凹槽用于安装支柱轴承30的内圈32,内圈32位于第二壳体20的凹槽内,可以对内圈32进行轴向限位,避免支柱轴承30的轴向窜动。
由于在本实施例中,密封环40包括第一密封环45和第二密封环46两个密封环,因此,第二壳体20也包括两个环形塞孔21,两个环形塞孔21分别位于支柱轴承30的内圈32的径向内侧和径向外侧,将第一密封环45的密封塞子43塞入位于径向外侧的环形塞孔21内,将第二密封环46的密封塞子43塞入位于径向内侧的环形塞孔21内,从而可以从径向两侧分别对支柱轴承30进行动态密封。
由图2可知,第一壳体10沿轴向扣压在第二壳体20的上,且第二壳体20的径向外侧与第一壳体10的径向外侧形成轴向延伸的开口,即第一壳体10和第二壳体20边缘的开口22沿轴向延伸且朝下(如图2的下方)。第一密封环45具有两个密封唇42,且两个密封唇42的弯折方向均朝向开口22方向,即两个密封唇42均朝图2所示的左下方倾斜,因此位于支柱轴承30径向外侧的第一密封环45的密封唇42为径向密封唇,可以阻止轴向的水汽、灰尘等径向入侵支柱轴承30,也避免支柱轴承30内的油脂沿径向泄露。
图2所示的密封唇42的倾斜方向有利于避免灰尘、砂砾或污水等由开口22进入第一壳体10和第二壳体20包围的空间内,密封唇42朝开口22方向倾斜,便于第一壳体10扣合在第二壳体20上方,且对第一壳体10沿轴向远离第二壳体20方向的运动产生较大的阻力,以避免第一壳体10相对于第二壳体20的轴向窜动。
第二密封环46的密封本体41的径向两端也分别设置有密封唇42,且密封唇42的弯折方向也相同,即两个密封唇42朝图2所示的右上方倾斜,因此第二密封环46的密封唇42为轴向密封唇,可阻止径向方向的水汽、灰尘等的侵入支柱轴承30,也避免支柱轴承30内的油脂沿轴向泄露。第二密封环46的密封唇42也可以对第一壳体10和第二壳体20在径向上运动产生较大的阻力,以避免第一壳体10相对于第二壳体20的径向窜动。
由上可知,第一密封环45中的密封唇42和第二密封环46的密封唇42,均在径向上和轴向上朝远离支柱轴承30的方向延伸,一方面阻挡外部的水汽、杂质进入支柱轴承30,另一方面,密封唇42的弯折方向,对
第一壳体10在轴向上远离第二壳体20的方向产生阻力,避免第一壳体10沿轴向脱离第二壳体20,也对第一壳体10在径向上远离第二壳体20的方向产生阻力,避免第一壳体10和第二壳体20在径向上错位。
进一步地,密封环40整体由橡胶材料一体成型。整个密封环40可以不具有内部骨架,降低了密封环40的生产成本及生产工艺难度。
需要说明的是,图2所示的第一密封环45的密封本体的结构以及密封唇42的弯折方向只是示例性的,本领域技术人员可以根据第一壳体10和第二壳体20边缘处的具体结构或密封环40的安装位置进行变换,并非只限于图示所示的结构。
基于相同的发明构思,本公开提供一种支柱轴承组件100,关于支柱轴承组件100实现的功能的具体方式已经在有关该密封环40的实施例中进行了详细描述,此处将不做详细阐述说明。
其中,在其他一些实施例中,支柱轴承组件100的第一壳体10可以与支柱轴承30的外圈31一体成型,支柱轴承组件100的第二壳体20也可以与支柱轴承30的内圈32一体成型。因此,密封环40的密封唇42也可以定义为与支柱轴承30的外圈31动态密封抵接,支柱轴承30的内圈32设置有安装密封塞子43的环形塞孔21,第一密封环45和第二密封环46分别设置在滚子33的径向两侧。
进一步可以理解的是,术语“中心”、“轴向”、“径向”、“上”、“下”、“左”、“右”、等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本实施例和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由下面的权利范围指出。
应当理解的是,本公开并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利范围来限制。
Claims (12)
- 一种密封环(40),其特征在于,包括呈环状的密封本体(41),所述密封本体(41)包括:密封唇(42);以及呈环形的密封塞子(43),位于所述密封本体(41)的轴向一端,其中,沿所述密封塞子(43)的周向上,所述密封塞子(43)的内壁和外壁均设置有倒刺(44)。
- 根据权利要求1所述的密封环(40),其特征在于,所述倒刺(44)包括:第一倒刺面(443),所述第一倒刺面(443)靠近所述密封唇(42)设置,所述第一倒刺面(443)与所述密封塞子(43)的夹角为第一夹角(α);以及第二倒刺面(444),所述第二倒刺面(444)背离所述密封唇(42)设置,所述第二倒刺面(444)与所述密封塞子(43)的夹角为第二夹角(β),其中,所述第一夹角(α)和所述第二夹角(β)均为钝角,且所述第一夹角(α)小于所述第二夹角(β)。
- 根据权利要求1所述的密封环(40),其特征在于,所述密封塞子(43)沿径向的变形量为5%~40%。
- 根据权利要求1所述的密封环(40),其特征在于,所述密封塞子(43)的外壁设置有多圈轴向间隔的外倒刺(442);所述密封塞子(43)的内壁设置有多圈轴向间隔的内倒刺(441);其中,所述外倒刺(442)和所述内倒刺(441)在轴向上对应。
- 根据权利要求1所述的密封环(40),其特征在于,所述密封本体(41)的径向两端分别设置有所述密封唇(42),且所述密封唇(42)的弯折方向相同。
- 根据权利要求1所述的密封环(40),其特征在于,所述密封环(40)整体由橡胶材料一体成型。
- 一种支柱轴承组件(100),其特征在于,包括:第一壳体(10);第二壳体(20),所述第二壳体(20)靠近所述第一壳体(10)的端面设置有环形塞孔(21);支柱轴承(30),沿轴向(A)支撑在所述第一壳体(10)和所述第二壳体(20)之间,用于使所述第一壳体(10)和所述第二壳体(20)之间可相对转动;以及如权利要求1-6中任一项所述的密封环(40),所述密封环(40)的所述密封塞子(43)塞入所述第二壳体(20)的环形塞孔(21)内,所述密封环(40)的所述密封唇(42)与所述第一壳体(10)动态密封抵接。
- 根据权利要求7所述的支柱轴承组件(100),其特征在于,所述环形塞孔(21)的径向尺寸与所述密封塞子(43)的径向尺寸的比值范围为60%~95%。
- 根据权利要求7所述的支柱轴承组件(100),其特征在于,所述密封环(40)包括:第一密封环(45),所述第一密封环(45)位于所述支柱轴承(30)的径向外侧;和/或第二密封环(46),所述第二密封环(46)位于所述支柱轴承(30)的径向内侧。
- 根据权利要求9所述的支柱轴承组件(100),其特征在于,所述第一密封环(45)的密封唇为径向密封唇,所述第二密封环(46)的密封唇为轴向密封唇。
- 一种安装方法,其特征在于,用于安装如权利要求7至10中任一项所述的支柱轴承组件,包括以下步骤:步骤一:将支柱轴承(30)的内圈(32)固定在第二壳体(20),并依次安装滚子(33)和外圈(31);步骤二:将所述密封环(40)的密封塞子(43)塞入所述第二壳体(20)的环形塞孔(21)内,所述密封环(40)的密封唇(42)位于所述环形塞孔(21)的外部;步骤三,将所述第一壳体(10)沿轴向扣在所述支柱轴承(30)的所述外圈(31)上,并与所述密封环(40)的密封唇(42)动态密封抵接,其中,步骤一和步骤二的执行顺序不分先后。
- 根据权利要求11所述的安装方法,其特征在于,所述密封环(40)包括第一密封环(45)和/或第二密封环(46),所述第二壳体(20)包括分别位于所述支柱轴承(30)的径向内侧和径向外侧的两个环形塞孔(21),在所述步骤二中,将所述第一密封环(45)的密封塞子塞入位于径向外侧的环形塞孔(21)内;和/或将第二密封环(46)的密封塞子塞入位于径向内侧的环形塞孔(21)内。
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