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Sealing device for hub/wheel assembly and assembly having such sealing device

Through the snap fit of the zigzag teeth and the annular recess and thermoplastic elastomer injection molding, the problems of poor adhesive use and insufficient sealing performance during the assembly process of the existing sealing device are solved, achieving higher sealing stability and Ease of production.

Inactive Publication Date: 2019-03-05
AB SKF SKF PATENT DEPARTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the use of such adhesive materials is not particularly favorable from an environmental point of view and requires considerable precautions during assembly of the seal, which is detrimental to production time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] refer to figure 1 , the seal for the hub / wheel assembly 2 is indicated with the general reference numeral 1 .

[0018] The assembly 2 has a rolling bearing 3 comprising: an outer ring 4 coaxial to the axis of rotation A of said bearing 3; an inner ring 5 coaxial to the outer ring 4; and a plurality of roller elements 8, such as balls, It is interposed between the outer ring 4 and the inner ring 5 to allow rotation of the inner ring 5 for rotational use ( / rotating in use) relative to the outer ring 4 for stationary use ( / fixed in use). The outer ring 4 of the bearing 3 has a collar 41 defined by a cylindrical (shaped) outer lateral surface 42 , an annular end surface 43 and a cylindrical (shaped) inner lateral surface 44 . For the inner ring 5, the inner ring 5 has a phonic wheel 51 rigidly fixed to the inner ring 5 and has: a mounting support 52, preferably defined by a plate bent into an L shape; and a ferromagnetic A loop 53 of material, which is fastened to the sup...

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PUM

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Abstract

Disclosed is a sealing device (1) for a hub / wheel assembly (2) with a roller bearing (3). The sealing device comprises: a guard (6), made of plastic, which is coupled to an outer ring (4) of the bearing so as to seal off the bearing, and which has a cylindrical mounting wall (61) having an outer lateral surface (61b) coupled to an inner lateral surface (44) of a collar (41) of the outer ring; a snap-engagement tooth (66) for engaging with the collar made along the outer lateral surface (61b) so that the snap-engagement tooth snap-fits in a contoured annular groove (45) made along the collar about the axis; and an annular gasket (9) made of thermoplastic elastomer being co-injection-molded inside a gripping seat (10) made in the cylindrical mounting wall on the same side as the snap-engagement tooth, substantially at a corner (11) defined between the cylindrical mounting wall and an annular reading wall (63).

Description

technical field [0001] The invention relates to a sealing device for a hub / wheel assembly. The invention also relates to a bearing / hub assembly having such a sealing arrangement. [0002] The invention can be applied particularly, although not exclusively, in the field of hub / wheel assemblies for motor vehicles (with rolling bearings for non-drive (vehicle) wheels). In this application, the inner ring of the bearing is rigidly fixed to the axle of the wheel and transmits the concomitant rotational motion to the axle of the wheel, while the outer ring of the bearing is rigidly fixed to a fixed hub, such as a motor vehicle suspension hub. The following will refer to this particular use by way of example, although it is still generally applicable. Background technique [0003] Since the invention is in this case applied to a non-driven wheel (which therefore does not have a through-shaft along the axis of the bearing), the associated seals have an axisymmetric "cup" shape so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78
CPCF16C33/7816F16C33/7873F16C2326/10F16C2226/74F16C33/723F16C33/7843F16C33/7886F16C41/007F16C19/186F16C33/586F16C2326/02B60B27/0005B60B27/0073B60B2380/12B60B2900/5112B60B2900/5114B60B27/02B60B2310/204B60B2320/10B60B2360/3412F16C19/38F16C33/78
Owner AB SKF SKF PATENT DEPARTMENT