Bellows having aerating means

Patent metadata

Field	Value
Publication number	US-10876629-B2
Application number	US-201716082036-A
Country	US
Kind code	B2
Filing date	Mar 28, 2017
Priority date	Mar 31, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A boot is provided in which the formation of an internal pressure inside the boot during assembly is prevented. The boot has a first fastening region and a first diameter and having a second fastening region with a second diameter, wherein the first diameter is smaller than the second diameter, and wherein the first fastening region comprises a binder seat region on its outer circumference, wherein at an inner circumference of the first fastening region at least one first and at least one second aerating means are arranged axially spaced from each other at the inner circumference which is formed with a flat surface, and protrude beyond said surface of the inner circumference.

First claim

The invention claimed is:

1. A boot, comprising:
a first fastening region having a first diameter and a second fastening region having a second diameter;
wherein the first diameter is smaller than the second diameter;
wherein the first fastening region comprises a binder seat region on its outer circumference;
wherein at an inner circumference of the first fastening region at least one first and at least one second aerating protrusions are arranged axially spaced from each other at a flat surface of the inner circumference, and protrude beyond the flat surface of the inner circumference; and
wherein the flat surface of the inner circumference of the first fastening region includes a flat region axially between the at least one first and at least one second aerating protrusions, wherein the flat region has a sufficiently long axial width that the flat region is formable to have a bead-like material displacement against a surface of a first machine part when the first fastening region is fastened by fastening means between the axially spaced first and second aerating protrusions.

2. The boot of claim 1 , wherein the at least one first and the at least one second aerating protrusions are arranged facing each other in at least one pair on the flat surface of the inner circumference of the first fastening region.

3. The boot of claim 1 , wherein at least three first and at least three second aerating protrusions are provided, and are arranged uniformly on the flat surface of the inner circumference of the first fastening region.

4. The boot of claim 1 , wherein the first or the second aerating protrusions have an approximately elliptical shape according to a plan view.

5. The boot of claim 4 , wherein the boot has an annular shape defining a central axis, and a main axis of the one of the first or second aerating protrusions having an approximately elliptical shape is aligned in an approximately coaxial manner relative to the central axis of the boot.

6. The boot of claim 1 , wherein the at least one first or the at least one second aerating protrusions are integral with the first fastening region.

7. The boot of claim 1 , wherein the at least one first or the at least one second aerating protrusions are arranged at least partly below at least one first or at least one second ear-shaped protrusions on the flat surface of the inner circumference of the first fastening region.

8. The boot of claim 1 , wherein one surface of the first binder seat region is formed approximately parallel to the flat surface of the inner circumference of the first fastening region.

9. A method for attaching a boot to a first machine part, wherein the boot includes a first fastening region having a first diameter and a second fastening region having a second diameter; wherein the first diameter is smaller than the second diameter;
wherein the first fastening region comprises a binder seat region on its outer circumference; and wherein at an inner circumference of the first fastening region at least one first and at least one second aerating protrusions are arranged axially spaced from each other at a flat surface of the inner circumference, and protrude beyond the flat surface of the inner circumference; the method comprising:
attaching the first fastening region having the first diameter on the first machine part by means of a fastening means such that, while disposing the fastening means at least in subareas between the flat surface of the inner circumference of the first fastening region and a surface of the first machine part, a passage opening is provided;
wherein, through fastening the first fastening region by means of the fastening means between the axially spaced first and second aerating protrusions, a region having a bead-like material displacement is formed, which is in contact with the surface of the first machine part.

10. The method of claim 9 , wherein the first fastening region is widened for arranging the first machine part therein.

11. The method of claim 9 , wherein the first fastening region is widened for disposing the first machine part therein, such that the passage opening is provided at least in subareas between the flat surface of the inner circumference of the first fastening region and a surface of the first machine part.

12. The method of claim 9 , further comprising, before attaching the boot to the first machine part, attaching the boot with its second fastening region having the second, larger diameter to a second machine part.

13. The method of claim 9 , wherein the first machine part is a joint shaft.

14. A boot assembly, comprising:
a first machine part having a first surface;
a boot including a first fastening region having a first diameter and a second fastening region having a second diameter; and
fastening means;
wherein the first diameter is smaller than the second diameter;
wherein the first fastening region comprises a binder seat region on its outer circumference; and
wherein at an inner circumference of the first fastening region, at least one first and at least one second aerating protrusions are arranged axially spaced from each other at a flat surface of the inner circumference, and protrude beyond the flat surface of the inner circumference;
wherein the fastening means fasten the first fastening region between the axially spaced first and second aerating protrusions, forming a region having a bead-like material displacement that is in contact with the surface of the first machine part.

Assignees

• Gkn Driveline Int Gmbh

Inventors

• Deisinger Markus
• Busch Winfried
• Wenning Ludger

Classifications

• F16D2003/22316

  Means for fastening or attaching the bellows or gaiters · CPC title

• F16J3/046 Primary

  Lubrication or venting arrangements · CPC title

• F16D3/845

  allowing relative movement of joint parts due to the flexing of the cover · CPC title

• F16D2003/846

  Venting arrangements for flexible seals, e.g. ventilation holes · CPC title

• F16J3/042

  Fastening details · CPC title