Low-friction seal assembly for wheel hub units and units equipped with the same
A technology for sealing components and hub units, which is applied in the directions of engine seals, hubs, wheels, etc., and can solve problems such as complexity, enlargement of sealing lips, and enlargement of
Active Publication Date: 2022-06-07
AB SKF
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- Description
- Claims
- Application Information
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Problems solved by technology
[0004] Generally, increasing the sealing performance of the above-mentioned sealing assemblies is obtained by increasing the geometrical complexity of the shroud and / or increasing the number of sealing lips, but there is an increasing demand for reduced fuel consumption and exhaust emissions and cost targets that the motor vehicle industry must meet. Increased demand makes this complexity and increase unprofitable in terms of the market
Method used
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[0009] Referring to the drawings, 1 denotes a low friction sealing assembly, especially designed for mounting on a wheel hub unit 2 of a vehicle, the sealing assembly 1 forming an integral part ( / integral part) of said unit during use.
[0010] Furthermore, the known type of wheel hub unit 2 comprises: an outer ring 3, which is stationary during use; an inner ring 4, which rotates during use about an axis A, which is also of both rings 3 and 4 an axis of symmetry; and at least one ring of revolving members 6 disposed between the outer ring 3 and the inner ring 4, coaxial to each other; the ring 4 having a flanged end 5, the flanged end 5 is opposite the outer ring 3 and is intended for carrying vehicle wheels.
[0011] The sealing assembly 1 can be inserted inside the annular interspace 7 defined between the rotating inner ring 4 and the stationary outer ring 3, more generally, in forming part of the wheel hub unit 2 or with the wheel hub unit 2. Between a rotating element 4 ...
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A low-friction sealing assembly, in particular for a vehicle wheel hub unit, which can be inserted inside an annular intermediate space defined between mutually coaxial flanged rotating and stationary elements of the wheel hub unit so that the protective arrangement is A body of rotation of at least one ring between the stationary element and the rotating element, and having: a first annular shield and a second annular shield, which during use are integral with the rotating element as well as with the stationary element; and an annular seal, which comprising a lip; the seal assembly being a multi-stage seal assembly provided with: a first inner collection stage designed to collect and preferably also expel some contaminants and defined by the annular cavity of the first shroud; and a labyrinth stage , which is arranged radially outside the first inner collection stage along the entry / exit path of the contaminants and is also defined by the annular deflected lug of the first shroud.
Description
technical field [0001] The present invention relates to a low-friction seal assembly, in particular for rolling bearings equipped with wheel hub units for vehicles. [0002] The function of the wheel hub unit is to rotatably mount (the) wheel of the vehicle on the suspension of the vehicle, and includes: a radially outer bearing ring, which is stationary; a radially inner bearing ring, which can be wound around The axis of rotation of the wheel hub unit rotates, has a flange extending in a radial (outward) direction for mounting the wheel, and defines an intermediate space together with the outer ring. A low friction seal assembly is arranged between the outer and inner rings in order to prevent any impurities from entering the bearing through the intermediate space. Background technique [0003] Seal assemblies for wheel hub units for applications involving vehicle wheels are already known from the prior art, some examples being described in documents US8303190 and US2012 / ...
Claims
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IPC IPC(8): F16C33/80
CPCF16C33/805F16C33/7826F16C33/7889F16C19/184F16C2326/02F16J15/3264B60B27/0073B60B2900/1212B60B2900/5112Y02T10/86F16C33/583B60B27/02B60B2310/206B60B2360/102B60B2360/50B60B2900/112B60B2900/212F16J15/002F16J15/3232F16J15/447
Inventor 达尼埃莱·杜赫罗伯托·加兰特米歇尔·奥格尼斯齐亚克保罗·A·雷安德里亚·塞拉菲尼赫克托·维拉洛博斯
Owner AB SKF