Device for the detection of an actuation force of a brake pedal, and brake system

• US 20060064977A1
• Filed: 09/30/2005
• Published: 03/30/2006
• Est. Priority Date: 04/02/2003
• Status: Abandoned Application

• Current Assignee: Lucas Automotive GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: Lucas Automotive GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Ohlig, Benedikt, Giering, Wilfried
• Application Number:
  US11/240,339
• Publication Number:
  US 20060064977A1
• Time in Patent Office: Days
• US Class Current: 60/534
• CPC Class Codes: B60Q 1/441 Electric switches operable by the driver's pedals
• CPC Class Codes: B60T 7/042 by electrical means, e.g. using travel or force sensors
• CPC Class Codes: G01L 5/225 to foot actuated controls, e.g. brake pedals

Abstract

The invention relates to a device for the detection of an actuation force of a brake pedal, comprising a force take-up element coupled to the brake pedal, and a force-transmitting element which is coupled to a brake system and is movable relative to the force take-up element, a sensor device being provided between the force take-up element and the force-transmitting element for the detection of at least one parameter characterizing the actuation force. In the case of this device, provision is made, for the purpose of compact design, whereby the force take-up element and the force-transmitting element are telescopically displaceable relative to one another, and whereby the sensor device is encased by the force take-up element and the force-transmitting element.

Claims

1. Device for the detection of an actuation force of a brake pedal, comprising

a force take-up element coupled to the brake pedal,

a force-transmitting element which is coupled to a brake system and is movable relative to the force take-up element, and

a sensor device, realized as a proximity sensor, for the detection of at least one parameter characterizing the actuation force,

the force take-up element and the force-transmitting element being telescopically displaceable relative to one another and the sensor device being encased by the force take-up element and the force-transmitting element,

wherein the sensor device is disposed between the force take-up element and the force-transmitting element in such a way that, upon a brake-pedal actuation, two components of the sensor device draw axially closer to one another, according to the telescopic displacement of the force take-up element and the force-transmitting element.

2. Device according to claim 1,

wherein there is provided a spring arrangement which forces the force take-up element and the force-transmitting element apart from one another.

3. Device according to claim 2,

wherein the spring arrangement comprises a spiral compression spring which is compressible in the direction of a longitudinal axis running through its centre.

4. Device according to claim 2,

wherein the spring arrangement comprises a helical compression spring.

5. Device according to claim 2,

wherein the spring arrangement is encased by the force take-up element and the force-transmitting element.

6. Device according to claim 1,

wherein the spring arrangement encompasses at least one of the force take-up element and the force-transmitting element.

7. Device according to claim 6,

wherein the spring arrangement is integrally connected to at least one of the force take-up element and the force-transmitting element.

8. Device according to claim 1,

wherein the sensor device comprises a Hall sensor.

9. Device according to claim 1,

wherein a guide pin passes through the force take-up element transversely relative to the direction of the relative movement of the force take-up element and the force-transmitting element, and is displaceable in a guide recess in the force-transmitting element in the direction of the relative movement.

10. Device according to claim 1,

wherein a sensor component of the sensor device is realized on a sensor carrier, the sensor carrier being mounted on a component of the force take-up element and the force-transmitting element, and in that a complementary sensor component of the sensor device is mounted on the respectively other component of the force take-up element and the force-transmitting element, or can be coupled to same.

11. Device according to claim 9,

wherein the sensor carrier is mounted on the force take-up element and is positioned by means of the guide pin.

12. Vehicle brake system, comprising a brake pedal for exerting a pedal actuation force, and a braking-force generator or a brake booster for generating or boosting a braking force according to the pedal actuation force exerted on the brake pedal, characterized by a device according to claim 1, the device being disposed between the brake pedal and the braking-force generator or the brake booster.

13. Device according to claim 1,

wherein the maximum displacement of the force take-up element relative to the force-transmitting element is limited by a stop.