Brake rotors for bicycles

Patent metadata

Field	Value
Publication number	US-12135064-B2
Application number	US-202017125029-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	Dec 17, 2020
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

Brake rotors for bicycles are described herein. An example brake rotor for a bicycle includes a carrier to be coupled to a hub of the bicycle. The brake rotor also includes a brake track having braking surfaces to be engaged by brake pads. The brake track is disposed radially outward of the carrier. The brake track has a first thickness and the carrier has a second thickness greater than the first thickness. The brake track is coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier.

First claim

What is claimed is:

1. A brake rotor for a bicycle, the brake rotor comprising:
a carrier to be coupled to a hub of the bicycle, the carrier having an arm with an end portion, the end portion having a protrusion extending in a circumferential direction; and
a brake track having braking surfaces to be engaged by brake pads, the brake rotor having a rotational axis defining a coordinate reference, the brake track disposed radially outward of the carrier, the brake track having an inner peripheral edge with a notch, the end portion of the arm disposed in the notch, the brake track being axially slidable on the end portion, the notch of the brake track at least partially defined by a lip that is disposed radially inward relative to the protrusion of the end portion to radially constrain the brake track relative to the carrier.

2. The brake rotor of claim 1 , further including a first stop to limit axial movement of the brake track in a first axial direction and a second stop to limit axial movement of the brake track in a second axial direction.

3. The brake rotor of claim 2 , wherein the first stop is on a first side of the brake rotor and the second stop is on a second side of the brake rotor opposite the first side of the brake rotor.

4. The brake rotor of claim 2 , wherein the first stop and the second stop are on a same side of the brake rotor.

5. The brake rotor of claim 1 , wherein the inner peripheral edge of the brake track along the notch is slidably engaged with an outer peripheral edge of the end portion.

6. The brake rotor of claim 1 , wherein the carrier has a spline interface to engage a spline interface on the hub.

7. The brake rotor of claim 1 , wherein the brake rotor does not include any stops to limit axial movement of the brake track relative to the carrier.

8. A brake rotor for a bicycle, the brake rotor comprising:
a carrier to be coupled to a hub of the bicycle;
a brake track having braking surfaces to be engaged by brake pads, the brake track disposed radially outward of the carrier, the brake track having a first thickness and the carrier having a second thickness greater than the first thickness, the brake rotor having a rotational axis defining a coordinate reference, the brake track coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier; and
a positioning portion coupled to the brake track, the positioning portion to dissipate heat from the brake track, wherein the carrier has an arm with an end portion, and wherein the positioning portion has a notch, the end portion disposed in the notch, the end portion to slide in the notch when the brake track moves axially relative to the carrier.

9. The brake rotor of claim 8 , wherein the end portion of the arm has a tab extending outward from an outer peripheral edge of the end portion.

10. The brake rotor of claim 9 , wherein the tab is to limit axial movement of the brake track in a first axial direction and the cooling fin is to limit axial movement of the brake track in a second axial direction.

11. The brake rotor of claim 9 , wherein the tab and the cooling fin are on a same side of the brake rotor.

12. The brake rotor of claim 8 , wherein the arm is a first arm, the end portion is a first end portion, and the notch is a first notch, wherein:
the carrier includes a second arm with a second end portion, and
the cooling fin has a second notch, the second end portion disposed in the second notch, the second end portion to slide in the second notch when the brake track moves axially relative to the carrier.

13. A brake rotor for a bicycle, the brake rotor comprising:
a carrier to be coupled to a hub of the bicycle;
a brake track having braking surfaces to be engaged by brake pads, the brake track disposed radially outward of the carrier, the brake track having a first thickness and the carrier having a second thickness greater than the first thickness, the brake rotor having a rotational axis defining a coordinate reference, the brake track coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier;
a pin extending through an opening formed in the brake rotor, the pin having a head disposed on a first side of the carrier; and
a clip coupled to the pin and disposed on a second side of the carrier, the head and the pin overlap with a portion of the brake track in an axial direction.

14. The brake rotor of claim 13 , wherein the head is to limit axial movement of the brake track in a first axial direction and the clip is to limit axial movement of the brake track in a second axial direction.

15. The brake rotor of claim 13 , wherein the opening is partially formed in the brake track and partially formed in the carrier.

16. The brake rotor of claim 13 , further including a spring disposed between an outer peripheral edge of the carrier and an inner peripheral edge of the brake track, the spring to bias the brake track circumferentially relative to the carrier.

17. A brake rotor for a bicycle, the brake rotor comprising:
a carrier to be coupled to a hub of the bicycle; and
a brake track having braking surfaces to be engaged by brake pads, the brake track disposed radially outward of the carrier, the brake track having a first thickness and the carrier having a second thickness greater than the first thickness, the brake rotor having a rotational axis defining a coordinate reference, the brake track coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier, wherein:
the carrier has an arm with an end portion, the end portion having a protrusion extending in a circumferential direction, and
the brake track has a notch with a shape corresponding to the end portion, the end portion disposed in the notch, the end portion to slide in the notch when the brake track moves axially relative to the carrier.

Assignees

• Sram Llc

Inventors

• Braedt Henrik
• Jordan Brian
• Dunlap Charles
• Heyna Sebastian

Classifications

• F16D65/128

  characterised by means for cooling · CPC title

• F16D2200/0052

  Carbon · CPC title

• F16D2200/0043

  Ceramic base, e.g. metal oxides or ceramic binder · CPC title

• F16D2200/0047

  Ceramic composite, e.g. C/C composite infiltrated with Si or B, or ceramic matrix infiltrated with metal · CPC title

• F16D2200/0021

  Steel · CPC title