Swivel bearing for braking devices

• US 4,872,768 A
• Filed: 11/22/1988
• Issued: 10/10/1989
• Est. Priority Date: 12/11/1987
• Status: Expired due to Fees

• Current Assignee: SKF GmbH Ernst-Sachs STR
• Original Assignee: SKF GmbH (ABet SKF)
• Inventors: Haas, Roland, Friedrich, Wolfgang, Herrmann, Gerhard, Brandenstein, Manfred
• Primary Examiner(s): Footland, Lenard A.
• Application Number:
  US07/275,204
• Time in Patent Office: 322 Days
• Field of Search: 384/223, 384/220, 384/275, 384/297, 384/218, 474/135
• US Class Current: 384/223
• CPC Class Codes: F16H 2007/081 Torsion springs
• CPC Class Codes: F16H 7/1218 of the dry friction type

Abstract

In a swivel bearing for a braking device the fixed machine part is provided with a flange which has friction surfaces for damping the swivel motion. A flange sleeve made of sheet metal axially and radially surrounds a flange which adjoins the front side of a sleeve section belonging to the swivel arm. The resulting annular space contains, besides the flange, an axially acting spring washer. The flange sleeve itself may optionally have an axial spring action. The flange sleeve is secured axially and against torsion at the sleeve section by means of a turned edge or similar means. The result is a compact arrangement which does not easily disassemble, even in an unmounted condition.

Claims

1. A swivel bearing for a braking device comprising a fixed internal machine part, a sleeve section rotatably mounted to said fixed internal machine part, a spring coupled between said machine part and said sleeve section for generating a relative swivel motion between said machine part and said sleeve section, and a damping element installed, a portion of said sleeve section and said machine part having radial friction surfaces, said internal machine part comprising a flange directed radially outward and having radial friction surfaces, a flange sleeve surrounding said flange axially and radially, means for securing said machine part axially and against torsion at said sleeve section, and said damping element adjoining at least one of the friction surfaces of the flange.

2. A swivel bearing according to claim 1 wherein said flange sleeve is made of flexible pliable sheet metal, said damping element comprises a damping ring and said flange section is axially spring-tensed against said damping ring.

3. A swivel bearing according to Claim 1 wherein said damping element comprises a damping ring and an axially acting spring washer is provided between the flange section and the damping ring.

4. A swivel bearing according to Claim 3 wherein said spring washer is covered with a friction lining.

5. A swivel bearing according to Claim 3 wherein said flange has at its bore edge a sleeve-shaped extension for retaining said spring washer in said bore, said bearing further comprising at least one radially protruding locking element being fixedly positioned with said spring washer to prevent torsion therebetween.

6. A swivel bearing according to any one of Claims 1 to 5 wherein said internal machine part has a surface area which serves as a sliding surface and wherein said sliding surface and said radial friction surfaces of said flange are covered with a slideway lining of a synthetic material.