Press connection with a sleeve-like component of sheet metal

• US 9,587,729 B2
• Filed: 08/19/2010
• Issued: 03/07/2017
• Est. Priority Date: 11/12/2009
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Baier, Richard, Ziegler, Andreas, Weber, Otmar
• Primary Examiner(s): Bochna, David E
• Application Number:
  US12/859,520
• Publication Number:
  US 20110109083A1
• Time in Patent Office: 2,392 Days
• Field of Search: 285/125.1, 285/133.6, 285/351, 285/923, 285/133.21, 285/370, 285/397, 285/425, 285/273, 285/382.4, 285/382.5, 285/275
• US Class Current: 1/1
• CPC Class Codes: F16B 2200/10 Details of socket shapes
• CPC Class Codes: F16B 4/004 Press fits, force fits, interference fits, i.e. fits without heat or chemical treatment F16B4/002 takes precedence
• CPC Class Codes: F16C 2361/61 Toothed gear systems, e.g. support of pinion shafts in general F16H57/02
• CPC Class Codes: F16C 33/588 Races of sheet metal
• CPC Class Codes: F16D 1/06 for attachment of a member on a shaft or on a shaft-end attachment of marine propellers on shafts B63H23/34
• CPC Class Codes: F16D 1/0858 due to the elasticity of the hub (including shrink fits)
• CPC Class Codes: F16D 2300/06 Lubrication details not provided for in group F16D13/74
• CPC Class Codes: F16D 2300/08 Details or arrangements of sealings not provided for in group F16D3/84
• CPC Class Codes: F16H 57/0426 Means for guiding lubricant into an axial channel of a shaft

Abstract

A press connection which includes a carrier and at least one sleeve-shaped structural component of sheet metal seated at least with a press seat on the carrier. At least one indentation is formed on the surface of the carrier and the indentation is at least covered by at least one wall section of the sleeve-shaped structural component.

Claims

1. A press connection, comprising:

a carrier having a surface with at least one indentation; and

at least one sleeve-shaped structural component formed from sheet metal and comprising an axially extending cylindrical wall;

wherein the cylindrical wall comprises;

a section with a first radial thickness; and

,

at least one wall section comprising a second radial thickness greater than the first radial thickness, wherein;

the carrier comprises the at least one indentation prior to press-fitting the at least one sleeve-shaped structural component within the carrier;

the at least one indentation of the carrier is covered by the at least one wall section of the at least one sleeve-shaped structural component;

the at least one wall section is press-fit within the carrier at the at least one indentation; and

the at least one wall section has at least one hole which leads into the at least one indentation and is media-permeable with the at least one indentation.

2. The press connection of claim 1, wherein the at least one sleeve-shaped structural component is a hollow cylinder.

3. The press connection of claim 1, wherein at least the at least one sleeve-shaped structural component has a sealing surface against which at least one seal rests.

4. The press connection of claim 1, further comprising:

an axis of rotation, wherein the at least one sleeve-shaped structural component and the carrier are seated against each other in any axial or circumferential direction and the at least one wall section is aligned with the at least one indentation in a direction orthogonal to the axis of rotation.

5. The press connection of claim 1, wherein the sleeve-shaped structural component is a cylindrical sleeve having an axis of rotation, wherein a radial sheet metal thickness of the at least one wall section, which is cold formed, has at least a greater radial thickness than a radial thickness of the sheet metal of the cylindrical sleeve which adjoins the at least one wall section in both axial directions extending in alignment with the axis of rotation.

6. The press connection of claim 5, wherein the sheet metal of the at least one wall section is at least radially thicker than the sheet metal of the cylindrical sleeve which adjoins the at least one wall section in both circumferential directions about the axis of rotation.

7. A media guide in a gear unit which is formed at least partially by the carrier, the at least one sleeve-shaped structural component and at least one duct capable of conducting media between the carrier and the at least one sleeve-shaped structural component, wherein the at least one duct is formed by the at least one wall section of the at least one sleeve-shaped structural component and the at least one indentation and wherein the carrier and the at least one sleeve-shaped structural component enter into a press connection of claim 1.

8. A press connection, comprising:

a carrier including a surface facing a rotational axis and having an indentation; and

, a separately formed sleeve-shaped structural component formed from sheet metal and locatable within the carrier, the sleeve-shaped structural component including an axially extending cylindrical wall, the axially extending cylindrical wall including, prior to assembly with the carrier;

a first wall section having a first wall thickness; and

,

a second wall section having a second wall thickness, smaller than the first wall thickness;

wherein, after assembly with the carrier;

the indentation is at least partially covered by the first wall section;

the sleeve-shaped structural component is in a press fit with the carrier at the second wall section; and

,

an amount of the first wall section is disposed within the indentation and the amount is equal to a difference between the first and second wall thicknesses.

9. The press connection of claim 8, wherein:

the axially extending cylindrical wall includes a throughhole; and

,

the throughhole is aligned with the carrier in a radial direction orthogonal to the rotational axis.

10. The press connection of claim 9, wherein the throughhole is aligned with the indentation in the radial direction.

11. The press connection of claim 8, further comprising:

a shaft located within the axially extending cylindrical wall.

12. A press connection of claim 11, further comprising:

a seal sealed against the axially extending cylindrical wall and the shaft.

13. The press connection of claim 8, wherein the axially extending cylindrical wall includes a constant inner diameter.

14. A press connection, comprising:

a carrier including a surface facing a rotational axis and having an indentation; and

,

a separately formed sleeve-shaped structural component formed from sheet metal and locatable on the carrier, the sleeve-shaped structural component including an axially extending cylindrical wall, the axially extending cylindrical wall including, prior to assembly with the carrier;

a first wall section having a first wall thickness; and

,

a second wall section having a second wall thickness, smaller than the first wall thickness;

wherein, after assembly with the carrier;

the indentation is at least partially covered by the first wall section;

the sleeve-shaped structural component is in a press fit with the carrier at the second wall section; and

,

an amount of the first wall section is disposed within the indentation and the amount is equal to a difference between the first and second wall thicknesses.

15. The press connection of claim 14, wherein the sleeve-shaped structural component is a hollow cylinder.

16. The press connection of claim 14, wherein the axially extending cylindrical wall includes a throughhole which is aligned with the indentation in the radial direction.

17. The press connection of claim 14, further comprising a seal sealed against the axially extending cylindrical wall and a shaft.

18. The press connection of claim 14, wherein the first wall thickness is between 5-20 percent thicker than the second wall thickness.

19. The press connection of claim 14, wherein the axially extending cylindrical wall includes a constant outer diameter.