Disc brake having an actuation device

Patent metadata

Field	Value
Publication number	US-11466741-B2
Application number	US-201716648361-A
Country	US
Kind code	B2
Filing date	Sep 21, 2017
Priority date	Sep 21, 2017
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

An adjustment device for a disc brake is operable for adjusting brake pads to compensate wear. The adjustment device includes a guide sleeve in which a wrap spring is arranged a groove ring surrounding the guide sleeve and coupled to a closure cap via a torsion spring, and an opening ring surrounding the groove ring.

First claim

The invention claimed is:

1. An adjustment device ( 20 ) for a disc brake ( 200 ) for adjusting brake pads to compensate for wear, comprising:
a guide sleeve ( 3 ), in which a wrap spring ( 4 ) is arranged,
a groove ring ( 5 ) surrounding the guide sleeve ( 3 ), wherein the groove ring ( 5 ) is coupled to a closure cap ( 6 ) via a torsion spring ( 7 ),
an opening ring ( 50 ) surrounding the groove ring ( 5 ), and an intermediate ring ( 1 ) for overcoming a play S between the guide sleeve ( 3 ) and the wrap spring ( 4 );
wherein the intermediate ring ( 1 ) is separate piece relative to the guide sleeve ( 3 ) and the opening ring ( 50 ).

2. The adjustment device ( 20 ) as claimed in claim 1 , wherein the intermediate ring ( 1 ) has a lug ( 11 ) for supporting the wrap spring ( 4 ) in the circumferential direction.

3. The adjustment device ( 20 ) as claimed in claim 1 , wherein the intermediate ring ( 1 ) has at least one stop ( 9 ) against twisting of the groove ring ( 5 ) in the circumferential direction.

4. The adjustment device ( 20 ) as claimed in claim 1 , wherein the intermediate ring ( 1 ) has at least one delimiter ( 10 , 10 a ) for preventing a movement of the opening ring ( 50 ) in the axial direction.

5. The adjustment device ( 20 ) as claimed in claim 1 , wherein the intermediate ring ( 1 ) consists of a single cohesive molding or an open molding.

6. The adjustment device ( 20 ) as claimed in claim 1 , wherein the guide sleeve ( 3 ) has an axial end ( 23 ) opposite the closure cap ( 6 ) with a circumferentially extending flange ( 15 ), on which the intermediate ring ( 1 ) rests.

7. The adjustment device ( 20 ) as claimed in claim 1 , wherein the intermediate ring ( 1 ) has an inner face ( 36 ) connected to the guide sleeve ( 3 ) via a weld connection.

8. An adjustment device ( 20 ) for a disc brake ( 200 ) for adjusting brake pads to compensate for wear, comprising:
a guide sleeve ( 3 ), in which a wrap spring ( 4 ) is arranged,
a groove ring ( 5 ) surrounding the guide sleeve ( 3 ), wherein the groove ring ( 5 ) is coupled to a closure cap ( 6 ) via a torsion spring ( 7 ),

an opening ring ( 50 ) surrounding the groove ring ( 5 ), and an intermediate ring ( 1 ) for overcoming a play S between the guide sleeve ( 3 ) and the wrap spring ( 4 ),
wherein the intermediate ring ( 1 ) has an inner face ( 36 ), wherein the inner face ( 36 ) has at least one protrusion ( 12 , 12 a , 12 b , 12 c ) for radially affixing the intermediate ring ( 1 ) to the guide sleeve ( 3 ).

9. A method for arranging an intermediate ring ( 3 ) on a guide sleeve ( 3 ), comprising the following steps:
placing a wrap spring ( 4 ) in a guide sleeve ( 3 );
placing an intermediate ring ( 1 ) on the guide sleeve ( 3 ), the intermediate ring ( 1 ) having an inner face ( 36 ) with at least one protrusion ( 12 , 12 a , 12 b , 12 c ); placing a groove ring ( 5 ) on the guide sleeve ( 3 ),
introducing a lug ( 11 ) of the intermediate ring ( 1 ) into a U-shaped elevation ( 24 ) on the wrap spring ( 4 ),
tightening the intermediate ring ( 1 ) in the circumferential direction and closing a gap (S) between the guide sleeve ( 3 ) and the wrap spring ( 4 ), and
further comprising at least one of the following three steps:
pressing the at least one protrusion ( 12 , 12 a , 12 b , 12 c ) into a hole ( 51 , 52 , 53 , 54 ) on the guide sleeve ( 3 );
axially supporting the intermediate ring ( 1 ) on a flange ( 15 ) of the guide sleeve ( 3 ); and
welding the intermediate ring ( 1 ) to the guide sleeve ( 3 ).

Assignees

• Wabco Europe Bvba

Inventors

• Grosskopf Ralf
• Henning Paul
• Strzala Wieslaw

Classifications

• F16D2250/0084

  Assembly or disassembly · CPC title

• F16D49/02

  shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member (similar clutches F16D13/08) · CPC title

• F16D65/52 Primary

  self-acting in one direction for adjusting excessive play · CPC title

• F16D65/567 Primary

  for mounting on a disc brake · CPC title

• F16D65/60

  for angular adjustment of two concentric parts of the brake control systems · CPC title