Pressure modulator for an anti-lock braking system of a bicycle

Patent metadata

Field	Value
Publication number	US-11364968-B2
Application number	US-202017014501-A
Country	US
Kind code	B2
Filing date	Sep 8, 2020
Priority date	Sep 19, 2019
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A pressure modulator for an anti-lock braking system of a bicycle. The pressure modulator includes a cylinder, and a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first and second accumulator chambers being connectable to each other via the through opening. The pressure modulator further includes a valve system, which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder, and an actuator for moving the piston.

First claim

What is claimed is:

1. A pressure modulator for an anti-lock braking system of a bicycle, comprising:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder; and
an actuator configured to move the piston,
wherein the through opening has a first sealing seat directed toward the second accumulator chamber and a second sealing seat directed toward the first accumulator chamber.

2. The pressure modulator as recited in claim 1 , wherein the closing element is loosely situated in the through opening in a manner that allows the closing element to move.

3. The pressure modulator as recited in claim 1 , wherein the closing element is a ball.

4. The pressure modulator as recited in claim 1 , wherein the actuator is a solenoid actuator, or the actuator is an electric motor connected to the piston.

5. The pressure modulator as recited in claim 1 , wherein the piston has a conical or flat development on a side directed toward the first accumulator chamber.

6. A pressure modulator for an anti-lock braking system of a bicycle, comprising:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder; and
an actuator configured to move the piston,
wherein the valve system is developed without springs.

7. A pressure modulator for an anti-lock braking system of a bicycle, comprising:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder;
an actuator configured to move the piston; and
a restoring element situated between the piston and the cylinder, which returns the piston to a starting position in which the valve system is open.

8. A pressure modulator for an anti-lock braking system of a bicycle, comprising:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder; and

an actuator configured to move the piston,
wherein the actuating device is a pin at the bottom of the cylinder.

9. A pressure modulator for an anti-lock braking system of a bicycle, comprising:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder;

an actuator configured to move the piston; and
a pressure-limiting device which limits a brake pressure maximally able to be applied by a rider of the bicycle.

10. An anti-lock braking system of a bicycle, comprising:
a pressure modulator, including:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder; and
an actuator configured to move the piston,
wherein at least one of:
the through opening has a first sealing seat directed toward the second accumulator chamber and a second sealing seat directed toward the first accumulator chamber,
a restoring element is situated between the piston and the cylinder, which returns the piston to a starting position in which the valve system is open,
the actuating device is a pin at the bottom of the cylinder, or
a pressure-limiting device limits a brake pressure maximally able to be applied by a rider of the bicycle.

11. A two-wheeler, the two-wheeler being a bicycle, the two-wheeler comprising:
an anti-lock braking system including a pressure modulator, the pressure modulator including:
a cylinder;
a piston having a through opening for hydraulic fluid, the piston being situated inside the cylinder and subdividing the cylinder into a first accumulator chamber and a second accumulator chamber, the first accumulator chamber and the second accumulator chambers being connectable to each other via the through opening;
a valve system which includes a closing element and an actuating device for the closing element, the closing element being situated in the through opening, and the actuating device being situated at a bottom of the cylinder; and
an actuator configured to move the piston,
wherein at least one of:
the valve system is developed without springs,
a restoring element is situated between the piston and the cylinder, which returns the piston to a starting position in which the valve system is open,
the actuating device is a pin at the bottom of the cylinder, or
a pressure-limiting device limits a brake pressure maximally able to be applied by a rider of the bicycle.

12. The two-wheeler as recited in claim 11 , wherein a front wheel of the two-wheeler and/or a rear wheel of the two-wheeler is/are equipped with the anti-lock braking system.

Assignees

• Bosch Gmbh Robert

Inventors

• Moia Alessandro

Classifications

• B62L3/00 Primary

  Brake-actuating mechanisms {(for back-pedalling brakes B62L5/00)}; Arrangements thereof · CPC title

• B60T8/3225

  Systems specially adapted for single-track vehicles, e.g. motorcycles (B60T8/3235 takes precedence) · CPC title

• B60T8/32 Primary

  responsive to a speed condition, e.g. acceleration or deceleration ({using electrical circuitry or regulation means B60T8/17} ; B60T8/28 takes precedence; electric devices on electrically propelled vehicles indicating the wheel slip B60L3/10; measuring linear or angular speed per se G01P3/00) · CPC title

• B60T8/1706

  for single-track vehicles, e.g. motorcycles · CPC title

• B62L3/023

  acting on fluid pressure systems · CPC title