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Seal

A sealing device and sealing ring technology, applied in the direction of engine sealing, electrical components, magnetic field/electric field shielding, etc., can solve problems such as no shielding

Active Publication Date: 2019-09-17
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Overall, the aforementioned electrically conductive materials are not well suited for a satisfactory shielding of electromagnetic interference waves, especially in the case of sealing rings that are used in connection with electronic mobility and electromagnetic interference waves Therefore often have a frequency ≥ 30MHZ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Figures 1 to 3 The sealing devices each have a sealing ring 1 made of sealing material.

[0041] The sealing ring is used in the field of electromobility to seal off two machine elements (not shown).

[0042] In addition to the sealing ring 1 , a shielding ring 2 is used, which in the exemplary embodiment shown here is formed by a magnetically soft ferrite ring. The shielding ring shields electromagnetic interference waves; the shielding ring 2 does not have another / additional task.

[0043] exist figure 1 and 3The diagrams shown in each are exemplary only.

[0044] Of course, the shielding ring 2 can be arranged at different positions of the sealing ring 1 and connected to the sealing ring 1 .

[0045] The shielding ring 2 is shown "outside" the sealing ring 1 on that side of the sealing ring 1 axially facing away from the space to be sealed.

[0046] Depending on the given conditions of the application, in particular if the axial installation space is very limi...

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PUM

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Abstract

The invention relates to a seal. The seal includes: a sealing ring (1) made of a sealing material; and at least one shielding ring (2, 3, 8) made a soft magnetic material for shielding against electromagnetic interfering waves.

Description

technical field [0001] The invention relates to a sealing device with a sealing ring made of sealing material. Background technique [0002] Such sealing arrangements are generally known, in which the sealing ring is designed, for example, as a radial shaft sealing ring and is made of an elastomeric material. The sealing ring has at least one dynamically loaded sealing lip which encloses the surface to be sealed of the machine element to be sealed in a sealing manner under elastic prestressing. [0003] DE 10 2013 000 982 A1 discloses a seal having a sealing ring comprising at least one dynamically loaded sealing lip and an upstream seal. The upstream seal is arranged at an axial distance adjacent to the sealing lip and consists of an electrically conductive material. The sealing lip and the upstream seal surround the surface to be sealed of the first machine element to be sealed in a sealing manner, wherein the first machine element is arranged adjacent to the second mach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3204F16J15/3284F16J15/53
CPCF16J15/3204F16J15/3284F16J15/064F16J15/002H05K9/0081
Inventor F·科林诺J·霍夫曼T·克伦克
Owner CARL FREUDENBERG KG