Seal, method for producing same and sealing arrangement therewith

Patent metadata

Field	Value
Publication number	US-9856916-B2
Application number	US-201314650873-A
Country	US
Kind code	B2
Filing date	Dec 4, 2013
Priority date	Dec 11, 2012
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A seal having a substantially H-shaped sealing profile.

First claim

The invention claimed is:

1. A seal for engaging an installation groove of a first machine element, the seal comprising:
a substantially H-shaped sealing profile, wherein the sealing profile includes two longitudinal webs arranged vertically and spaced apart from one another with a horizontal cross web connecting the two longitudinal webs, the cross web being deformable so as to enable pivoting of the longitudinal webs relative to one another,
wherein each longitudinal web includes a sealing lip on a bottom end and peg arm on a top end,
wherein each peg arm extends horizontally outward from the respective longitudinal web,
wherein the peg arms are pivotable toward one another when the cross web is deformed to enable insertion of the peg arms into the installation groove, and
wherein a greatest width of the seal is at the horizontally extending peg arms, the greatest width being greater than a smallest width of the installation groove.

2. The seal of claim 1 , wherein the sealing profile is symmetric with respect to a first imaginary plane that vertically bisects the cross web, and
wherein the sealing profile is asymmetric with respect to a second imaginary plane arranged orthogonally to the first imaginary plane and intersecting the first imaginary plane in the cross web.

3. The seal of claim 1 , wherein a ratio between a length of the sealing lips and a length of corresponding peg arms of the respective longitudinal webs is at least 2.

4. The seal of claim 1 , wherein the peg arms are in the shape of a latching lug.

5. The seal of claim 1 , wherein a ratio between a length of the peg arms and a flexibly effective width of the cross web is in a range of from 0.75 to 1.5.

6. The seal of claim 1 , wherein the sealing lips include flanks that face one another such that the sealing lips delimit a lubricant reservoir, which is filled with a lubricant.

7. The seal of claim 6 , wherein the sealing lips include flanks that are remote from one another, and at least one of the flanks facing one another, the flanks remote from one another, or both, include a surface profiling.

8. The seal of claim 1 , wherein the seal comprises an elastic material with a Shore hardness A of between 70 and 95.

9. The seal of claim 1 , wherein the seal comprises a polyurethane.

10. The seal of claim 8 , wherein the elastic material includes a friction-reducing filler.

11. The seal of claim 1 , in the form of a sealing ring.

12. A method for producing the seal of claim 1 , the method comprising:
extruding an endless belt-shaped sealing profile;
cutting the endless belt-shaped sealing profile to length, to obtain a cut-to-length sealing profile;
deforming the cut-to-length sealing profile in a ring-shaped manner, leaving two free ends; and
connecting together the two free ends of the sealing profile, which is formed into the sealing ring.

13. The method of claim 12 , wherein the sealing profile is formed into a sealing ring with a diameter≧400 mm in the deforming.

14. The method of claim 12 , wherein the connecting includes welding the two free ends.

15. The method of claim 14 , wherein the free ends are joined as a result of mirror welding.

16. A sealing arrangement, comprising:
the seal of claim 1 ;
the first machine element; and
a second machine element,
wherein the seal is arranged with its peg arms each in a positive locking manner in the installation groove of the first machine element, wherein the seal contacts the installation groove with its peg arms in a substantially statically sealing manner, and
wherein the seal contacts the second machine element with sealing lips in a dynamically sealing manner.

17. The sealing arrangement of claim 16 , wherein the first machine element comprises a housing with a bore,
wherein the second machine element comprises a shaft that is surrounded by the housing at a radial spacing, and
wherein the seal, which surrounds the shaft with its sealing lips in a dynamically sealing manner, is arranged in a gap formed by a spacing.

Assignees

• Freudenberg Carl Kg

Inventors

• Fietz Roland
• Palmer Andreas

Classifications

• F16C2300/14

  Large applications, e.g. bearings having an inner diameter exceeding 500 mm · CPC title

• F16C29/088

  Seals extending in the longitudinal direction of the carriage or bearing body · CPC title

• F16J15/3456

  without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip · CPC title

• F16J15/328

  Manufacturing methods specially adapted for elastic sealings (moulding B29C) · CPC title

• F16J15/3232

  having two or more lips · CPC title