Friction lining holding spring for improved brake piston fixing

Patent metadata

Field	Value
Publication number	US-11536334-B2
Application number	US-201816630929-A
Country	US
Kind code	B2
Filing date	Jul 24, 2018
Priority date	Jul 28, 2017
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A friction lining holding spring and the equipped component/assembly, specifically a motor vehicle disc brake lining, including the friction lining holding spring. The friction lining holding spring includes an offset knee piece of a U-spring leg, which branches off at an angle from a largely flat U base section, and wherein the largely flat base section has a fastening tab with a cup-shaped rim hole including a through-opening for the purpose of fixing on a backplate of the friction lining, wherein each knee piece has integrated gearing, which is in particular designed as an uneven brake piston insertion trajectory such that, when a brake piston is inserted, there is a predefined gearing reduction effect for the purpose of automatically influencing or modelling the necessary force requirement.

First claim

The invention claimed is:

1. A friction lining holding spring for a motor vehicle partial-lining disc brake lining, which is cut out in one piece from thin steel sheet material, is bent in the form of a U-shaped yoke, comprising:
a U base section, which is arranged largely flat and so as to be stiff in bending and has a central fastening tab with a cup and a through-opening for the purpose of fixing on a backplate of a motor vehicle disc brake lining, and
U-spring legs branching off trapezoidally at an obtuse angle to the base section at each end of the U base section,
wherein each U-spring leg has a free end, which is designed as an offset knee piece,
wherein each knee piece has an uneven insertion trajectory such that, when inserted into the brake piston, there is a predefined reduction in an insertion force.

2. The friction lining holding spring as claimed in claim 1 , wherein the free end of each U-spring leg has at least one arc-shaped section to form the insertion trajectory.

3. The friction lining holding spring as claimed in claim 2 , wherein the arc-shaped section contains part of a circular arc or part of a curved mathematical function.

4. The friction lining holding spring as claimed in claim 3 , wherein the mathematical function is selected from the group consisting of an involute, an ellipse, and an E-function.

5. The friction lining holding spring as claimed in claim 1 , wherein the knee piece is angled with multiple sections within itself to form the insertion trajectory.

6. The friction lining holding spring as claimed in claim 5 , wherein the knee piece has at least one arc-shaped section to form the insertion trajectory.

7. The friction lining holding spring as claimed in claim 1 , wherein a surface treatment comprises a special coating of the friction lining holding spring.

8. The friction lining holding spring as claimed in claim 7 , wherein the special coating is an anticorrosion coating of the friction lining holding spring incorporates friction-reducing components, or an anticorrosion coating is provided with an antifriction coating as a separate top coat.

9. The friction lining holding spring as claimed in claim 1 , wherein the uneven insertion trajectory is constructed from a plurality of sections of the same order or from a plurality of sections of different orders.

10. The friction lining holding spring as claimed in claim 1 , wherein the insertion trajectory has a linear or progressive effect.

11. The friction lining holding spring as claimed in claim 1 , wherein each U-spring leg or knee piece has a shape that satisfies a predetermined moment of resistance to bending.

12. The friction lining holding spring as claimed in claim 1 , wherein each U-spring leg or knee piece has a material that satisfies a predetermined moment of resistance to bending.

13. The friction lining holding spring as claimed in claim 1 , wherein at least one knee piece of a U-spring leg is provided with a surface treatment.

14. The friction lining holding spring as claimed in claim 1 , wherein the friction lining holding spring is of substantially smoothed design in a contact zone of the knee piece.

15. A motor vehicle disk brake lining comprising a friction lining holding spring having a knee piece, a U-spring leg and a U base section including a fastening tab, which is fixed on a backplate, wherein the knee piece of the U-spring leg has a insertion trajectory as claimed in claim 1 .

16. The friction lining holding spring as claimed in claim 1 , wherein the friction lining holding spring is of a substantially brushed, ground or polished design, in a contact zone of the knee piece.

17. The friction lining hold spring as claimed in claim 1 , wherein
the U-spring legs are arranged symmetrically with respect to one another.

18. The friction lining hold spring as claimed in claim 1 , wherein a curved surface of each knee piece has a differing radius of curvature.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Würz Matthias
• Weise Stefanie
• Leidecker Norbert
• Adam Jens
• Klacik Martin

Classifications

• F16D65/0979

  acting on the rear side of the pad or an element affixed thereto, e.g. spring clips securing the pad to the brake piston or caliper · CPC title

• F16D65/02

  Braking members; Mounting thereof (friction linings or attachment thereof F16D69/00) · CPC title

• F16D65/0006 Primary

  Noise or vibration control · CPC title

• F16D65/097

  Resilient means interposed between pads and supporting members {or other brake parts} · CPC title

• F16D65/092

  for axially-engaging brakes, e.g. disc brakes · CPC title