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Sealing device

A technology of sealing device and sealing lip, which is applied in the direction of engine sealing, transportation and packaging, mechanical equipment, etc., can solve the problems of increasing sealing lip, making it difficult for any pollutants to enter, and reducing sealing ability

Pending Publication Date: 2021-02-02
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under particularly severe conditions of use, the seals according to the prior art exhibit problems such as a markedly reduced sealing capacity, and in order to overcome these problems, the known solution has been to increase the number of sealing lips so that any contamination more difficult to access
However, this solution, while solving the above-mentioned problems, makes the production of the sealing device particularly expensive both in terms of design and production costs

Method used

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  • Sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Referring to the drawings, a wheel hub assembly according to a preferred embodiment of the present invention is generally indicated by reference numeral 10 . The drawings show details of examples of construction.

[0009] The assembly 10 has a central axis of rotation X and comprises a hub 20 which is rotatable and flanged, that is to say provided with a flange 21 transverse ( / transverse) to the axis X, and a bearing unit 30, The bearing unit 30 further comprises:

[0010] - fixed radial outer ring 31,

[0011] - a radially inner ring 20 defined by the hub 20,

[0012] - a further rotatable radially inner ring 34 mounted on and fixed to the hub 20; and

[0013] Between the radially outer ring 31 and the radially inner rings 20 and 34 two turns of rolling bodies 32 , 33 , which in this example are balls.

[0014] Throughout this specification and claims, terms and expressions denoting positions and orientations such as "radial" and "axial" should be interpreted in re...

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PUM

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Abstract

A sealing arrangement (50) for a bearing unit (30), in which a static assembly (70) is provided with a shaped metal support (51), a plurality of non-contact sealing lips (53a, 53b) and two contact lips (56, 57), in which a dynamic assembly (58) defines a labyrinth seal with a second sealing lip (53b) of the non-contact sealing lips (53a, 53b) and has a full-angle seal, preferably, the third lip (54) is non-contact so as to form a full seal that prevents any contaminants from entering the bearing unit (30).

Description

technical field [0001] The present invention relates to a sealing device having innovative features such that it provides a better seal against ( / preventing) contamination. The seal is applied to the bearing unit. The invention is particularly, though not exclusively, suitable for a wheel hub assembly of a motor vehicle, which assembly is provided with a bearing unit. More particularly, bearing units according to the invention are those in which the outer ring of the bearing is fixed and the inner ring of the bearing is rotatable. Advantageously, but not exclusively, the invention applies to bearing units with double rings ( / two rings of balls). Background technique [0002] It is well known that bearing units are often exposed to various types of contaminants such as dirt, dust, and particulates in suspension and / or solution; therefore, bearing units (including those belonging to wheel hub assemblies for motor vehicles) require setting A seal that protects the bearing un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78F16C33/80F16J15/447F16J15/3232B60B27/00
CPCF16C33/7806F16C33/7823F16C33/805F16J15/4478B60B27/0073B60B27/0005F16C2326/02F16C33/7886F16C19/186F16J15/3232F16C33/782F16J15/447F16J15/3256F16C19/18
Inventor 达尼埃莱·杜赫福斯托·莫雷洛安东尼亚·纳斯塔西劳拉·斯果蒂
Owner AB SKF