Disc brake having an adjusting spindle

Patent metadata

Field	Value
Publication number	US-12158188-B2
Application number	US-201917635752-A
Country	US
Kind code	B2
Filing date	Aug 16, 2019
Priority date	Aug 16, 2019
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A disc brake includes a pressure piece, an adjusting spindle, and an adjustment unit. The adjusting spindle is guided through an opening, provided with a thread unit, of the pressure piece. The adjusting spindle is guided through the adjusting unit, and the adjusting unit protrudes into the opening. The adjusting spindle has a limitation disposed in a thread turn of the adjusting spindle.

First claim

What is claimed is:

1. A disc brake ( 1 ) for motor vehicles, the disc brake comprising:
a pressure piece ( 2 ) that receives an actuating force which is arranged along an axial axis (AB) of the disc brake ( 1 ),
at least one adjusting spindle ( 10 ) having a thread ( 15 ), wherein the thread ( 15 ) has at least one thread turn ( 11 ), wherein the adjusting spindle translates axially in response to the actuating force applied on the pressure piece, wherein the adjusting spindle transmits the actuating force to a pressure plate, wherein the pressure plates transmits the actuating force to a brake pad; and
an adjustment unit ( 20 ) for adjusting an air gap (L) of the disc brake ( 1 ),
wherein the adjusting spindle ( 10 ) is guided axially at least partially through an opening ( 4 ) of the pressure piece ( 2 ), wherein the opening of the pressure piece is provided with a thread unit ( 5 ), and
wherein the adjusting spindle ( 10 ) is guided at least partially through an opening in the adjustment unit ( 20 ) and the adjustment unit ( 20 ) axially protrudes at least partially into the opening ( 4 ) of the pressure piece ( 2 ),
wherein the adjusting spindle ( 10 ) includes a limitation ( 12 , 12 a , 12 b , 12 c ) disposed in the thread turn ( 11 );
wherein the limitation in the thread turn of the spindle contacts a stop ( 5 a ) of the thread unit ( 5 ) and limits adjustment of the spindle ( 10 ) relative to the thread unit ( 5 ) disposed in the opening of the adjustment unit ( 20 ).

2. The disc brake ( 1 ) as claimed in claim 1 , wherein the limitation ( 12 , 12 a , 12 b , 12 c ), starting from a thread base ( 13 ) of the thread turn ( 11 ) of the adjusting spindle ( 10 ), extends radially toward the adjustment unit ( 20 ).

3. The disc brake as claimed in claim 2 ,
wherein the thread unit ( 5 ) includes the stop ( 5 a ), which defines a radial spacing(S) from the axial axis (A), wherein the limitation ( 12 , 12 a , 12 b , 12 c ) has a radial dimension from the axial axis (A) which is greater than the radial spacing(S) of the stop ( 5 a ) of the thread unit ( 5 ), such that the stop ( 5 a ) and the limitation overlap radially.

4. The disc brake ( 1 ) as claimed in claim 3 , wherein the limitation and the thread unit ( 5 ) overlap axially when the limitation engages the stop ( 5 a ).

5. The disc brake ( 1 ) as claimed in claim 1 , wherein the limitation ( 12 , 12 a , 12 b , 12 c ) is a part-region ( 14 a ) of a thread flank ( 14 ) of the adjusting spindle ( 10 ) or the limitation ( 12 , 12 a , 12 b , 12 c ) is a part-region ( 14 b ) of the spindle ( 10 ).

6. The disc brake ( 1 ) as claimed in claim 5 , wherein the limitation ( 12 , 12 b , 12 c ) which is in the form of part of the thread flank ( 14 ) is deformed by a shaping operation.

7. The disc brake ( 1 ) as claimed in claim 1 , wherein the limitation ( 12 , 12 a , 12 b , 12 c ) is formed by machining, shaping, or material application.

8. The disc brake ( 1 ) as claimed in claim 7 , wherein the limitation ( 12 , 12 a , 12 b , 12 c ) is formed by shaping and the shaping is a rolling process.

9. The disc brake ( 1 ) as claimed in claim 1 , wherein the limitation ( 12 , 12 a , 12 b , 12 c ) is configured to strike the stop ( 5 a ) of the thread unit ( 5 ) and to prevent the adjusting spindle ( 10 ) from being axially unscrewed toward a brake disc of the disc brake ( 1 ).

10. The disc brake ( 1 ) as claimed in claim 1 ,
wherein the spindle ( 10 ) is disposed radially inward relative to the thread unit ( 5 ) and is threadingly engaged with the thread unit ( 5 );
wherein the spindle ( 10 ) is disposed radially inward relative to the adjustment unit ( 20 );
wherein the thread unit ( 5 ) and the adjustment unit ( 20 ) are each disposed radially inward relative to an inner surface of the pressure piece ( 2 ) that defines the opening of the pressure piece ( 2 ).

Assignees

• Zf Cv Systems Europe Bv

Inventors

• Mittendorf Roman-Marius
• Stumpf Martin

Classifications

• F16D2250/0023

  Shaping by pressure · CPC title

• F16D65/567

  for mounting on a disc brake · CPC title

• F16D65/66 Primary

  with screw-thread and nut · CPC title

• F16D55/226 Primary

  in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title