Electronic brake pedal apparatus

Patent metadata

Field	Value
Publication number	US-12441279-B2
Application number	US-202318218995-A
Country	US
Kind code	B2
Filing date	Jul 6, 2023
Priority date	Jan 4, 2023
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

An electronic brake pedal apparatus may perform a function of a stop lamp switch and a function of a stroke sensor in the related art by use of electronic Hall sensors and a Hall switch and diagnose failure by use of the two Hall sensors and the Hall switch, which makes it possible to simplify a configuration, reduce an external size and costs, and improve durability, reliability, and marketability by use of a contactless sensor.

First claim

What is claimed is:

1. An electronic brake pedal apparatus comprising:
a pedal arm rotatably coupled to a pedal housing;
a plurality of magnet portions connected to the pedal arm and configured to change magnetic flux when the pedal arm rotates;
a plurality of sensor portions configured to detect a change in the magnetic flux of the magnet portions;
a pedal controller fixed to the pedal housing to face the magnet portions and connected to the plurality of sensor portions, the pedal controller being configured to transmit a control signal to a vehicle controller and a braking controller by use of signals of the sensor portions; and
a detecting module disposed between the pedal arm and the pedal controller so that the magnet portions are positioned on the detecting module,
wherein the detecting module includes:
a rotation lever connected to one side of the pedal arm and configured to rotate together with the pedal arm; and
a lever casing fixed to the pedal housing and configured to cover the rotation lever, and

wherein the magnet portions include:
a first magnet coupled to one side of the pedal arm and spaced from a hinge pin coupled to the pedal arm at a predetermined distance, the first magnet being configured to move along an arc trajectory based on the hinge pin when the pedal arm rotates; and
a second magnet spaced from the hinge pin at a distance longer than a distance between the hinge pin and the first magnet, the second magnet being coupled to be rotatable in place at a position on the lever casing.

2. The electronic brake pedal apparatus of claim 1 , wherein the vehicle controller is configured to control a signal related to a function of a stop lamp switch and includes at least one of a controller of turning on a vehicle, a controller of controlling an operation of turning on or off a stop lamp, and a controller of controlling a shift lock.

3. The electronic brake pedal apparatus of claim 1 ,
wherein the braking controller is configured to control a signal related to a braking function of a vehicle that corresponds to a function of a stroke sensor, and
wherein the braking controller includes:
a main braking controller configured to control braking of the vehicle; and
an auxiliary braking controller configured to perform a redundancy function of the main braking controller.

4. The electronic brake pedal apparatus of claim 1 , wherein the first magnet and the second magnet are provided to face the sensor portions of the pedal controller while being externally exposed of the detecting module.

5. The electronic brake pedal apparatus of claim 1 , wherein a pinion gear is rotatably coupled to the lever casing, a gear portion is formed at an end portion of the rotation lever and engages with the pinion gear, the second magnet is coupled to a center portion of the pinion gear, and the second magnet is rotated in place by a rotation of the pinion gear when the rotation lever rotates.

6. The electronic brake pedal apparatus of claim 1 ,
wherein the sensor portions include a Hall switch provided on the pedal controller to face the first magnet, and
wherein the pedal controller is configured to transmit a signal, which is related to a function of a stop lamp switch, to the vehicle controller by use of a signal of the Hall switch.

7. The electronic brake pedal apparatus of claim 6 ,
wherein the sensor portions further include a first Hall sensor and a second Hall sensor provided on the pedal controller to face the first magnet and the second magnet, and
wherein the pedal controller is configured to transmit a signal, which is related to a braking function of a vehicle that corresponds to a function of a stroke sensor, to a braking controller by use of a signal of the first Hall sensor and a signal of the second Hall sensor.

8. The electronic brake pedal apparatus of claim 7 , wherein the first Hall sensor and the Hall switch are disposed on a line extending straight from a center portion of the hinge pin.

9. The electronic brake pedal apparatus of claim 8 , wherein the Hall switch is provided as two Hall switches, the two Hall switches are disposed at first and second opposite sides of the first Hall sensor, one Hall switch for each opposite side, in a state in which the first Hall sensor is provided at a center portion between the two Hall switches, and the two Hall switches are spaced from the first Hall sensor at a same distance.

10. The electronic brake pedal apparatus of claim 7 ,
Wherein the pedal controller is configured to determine the signal of the first Hall sensor, which is relatively higher in accuracy between the signal of the first Hall sensor and the signal of the second Hall sensor, as a main signal and to transmit the main signal to a main braking controller that forms the braking controller, and
wherein the pedal controller is further configured to determine the signal of the second Hall sensor as a redundancy signal and to transmit the redundancy signal to an auxiliary braking controller that forms the braking controller.

11. The electronic brake pedal apparatus of claim 7 , wherein the second Hall sensor is positioned to be spaced from a surface of the pedal housing at a distance longer than a distance between the first Hall sensor and the surface of the pedal housing.

12. The electronic brake pedal apparatus of claim 7 , wherein the Hall switch is connected to a battery power source of the vehicle and to transmit a signal to the vehicle controller and the braking controller, and the first Hall sensor and the second Hall sensor are connected to an ignition power source of the vehicle or connected to a power source of the braking controller and transmit signals to the braking controller.

13. The electronic brake pedal apparatus of claim 12 , wherein in a state in which the vehicle is turned off, only the Hall switch is kept in an activated state, and the pedal controller and the braking controller are kept in a deactivated state.

14. The electronic brake pedal apparatus of claim 13 , wherein when the pedal arm is rotated in response to operation of a driver in a state in which the vehicle is turned off, a signal of the Hall switch is transmitted to the vehicle controller, a stop lamp is turned on, the braking controller and the pedal controller are activated by the signal of the Hall switch, power is supplied to the first Hall sensor and the second Hall sensor, the first Hall sensor and the second Hall sensor detect a rotation of the pedal arm based on the change in the magnetic flux, the pedal controller is configured to transmit a signal, which is proportional to the rotation of the pedal arm, to the braking controller, and the braking controller is configured to generate a signal related to the braking function of the vehicle.

15. The electronic brake pedal apparatus of claim 14 , wherein the braking controller and the pedal controller enter a deactivation mode when the pedal arm does not rotate for a predetermined time period in a state in which the braking controller and the pedal controller are activated.

16. The electronic brake pedal apparatus of claim 1 ,
wherein a connection portion is provided at one side of the pedal arm and connects the pedal arm and the rotation lever,
wherein a seating portion, to which the first magnet is coupled, is provided at one side of the pedal arm,
wherein the connection portion and the seating portion move along arc trajectories along a rotation radius based on the hinge pin when the pedal arm rotates,
wherein first and second holes each including an arc curvature are formed in the lever casing to allow the connec

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Kyung Chang Ind Co Ltd

Inventors

• Kim Eun Sik
• Lim Chae Min
• Kim Ji Soo
• Pee Jae Kyung

Classifications

• B60T2220/04

  Pedal travel sensor, stroke sensor; Sensing brake request · CPC title

• B60Y2400/3012

  using Hall effect · CPC title

• B60T2270/402

  Back-up · CPC title

• B60T17/221

  Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems (hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M) · CPC title

• B60Q1/441

  Electric switches operable by the driver's pedals · CPC title