Low profile electronic throttle pedal

• US 6,318,208 B1
• Filed: 03/03/2000
• Issued: 11/20/2001
• Est. Priority Date: 03/03/2000
• Status: Expired due to Term

• Current Assignee: Williams Controls Industries, Inc. (Curtiss-Wright Corporation)
• Original Assignee: Williams Controls Industries, Inc. (Curtiss-Wright Corporation)
• Inventors: Thongs, Lawrence C. Jr., Honyak, James G.
• Primary Examiner(s): Green, Mary Ann
• Application Number:
  US09/517,745
• Time in Patent Office: 627 Days
• Field of Search: 745/13, 745/60, 745/14, 745/12, 745/61
• US Class Current: 74/513
• CPC Class Codes: G05G 1/38 comprising means to continuously detect pedal position
• CPC Class Codes: Y10T 74/20534 Accelerator
• CPC Class Codes: Y10T 74/20888 Pedals

Abstract

A low profile electronic throttle pedal assembly for vehicles includes a base plate mounted on the floor of the vehicle and a throttle treadle pivotally mounted on the base plate. The treadle includes a lower lever arm portion extending through the base plate into a space beneath the vehicle floor. A throttle position sensor as well as the drive mechanism connecting lever arm with the sensor are both carried on the bottom side of the plate, beneath the vehicle floor. Treadle return springs pass through the plate and are seated beneath the vehicle floor.

Claims

1. An electronic throttle pedal assembly of a vehicle, comprising:

a base mounted on the floor of said vehicle;

a treadle having an upper portion adapted to be contacted by the operator of said vehicle, and having a lower portion extending downwardly through said floor;

a first pivotal connection mounting said treadle on said base for pivotal motion about a first axis;

an electrical sensor for sensing the pivotal position of said treadle and producing an output signal related to the sensed position of said treadle;

linkage drivingly connecting said lower portion of said treadle with said sensor.

2. The throttle pedal assembly of claim 1, wherein:

said base includes a plate overlying said floor, and at least one support on the bottom of said plate extending downwardly beneath said floor,

said sensor includes a rotatable input shaft, and

said linkage includes first and second interconnected links for translating pivotal movement of said treadle into pivotal movement of said sensor input shaft.

3. The throttle pedal assembly of claim 2, wherein said lower portion of said treadle is mounted by said pivotal connection on said support.

4. The throttle pedal assembly of claim 3, wherein:

one-end of said first link is pivotally connected to said lower end of said treadle,

said second link includes a crank arm, and

the opposite end of said first link is pivotally connected to said crank arm.

5. The throttle pedal assembly of claim 1, wherein said treadle includes an intermediate, arcuate portion between said upper and lower portions thereof.

6. The throttle pedal assembly of claim 2, including at least one compression spring captured between said base and said treadle, said spring biasing said treadle to pivot toward one extreme pivotal position thereof.

7. The throttle pedal assembly of claim 6, wherein said base includes a pocket formed therein below said floor, and said spring is seated within said pocket.

8. A low profile electronic throttle pedal assembly of a vehicle, comprising:

a base plate mounted on a floor of said vehicle, said plate having an opening therein providing access to an area beneath said floor;

a treadle having an upper portion above said plate, and a lower portion extending downwardly through said opening to said area beneath said floor;

a hinge mounting said treadle for pivotal movement between a closed throttle position and

a wide open throttle position;

a sensor mounted beneath said floor for sensing the pivotal position of said treadle and outputting an electrical signal related to the sensed position of said treadle.

9. The throttle pedal assembly of claim 8, wherein said hinge is formed on one end of said plate adjacent said opening in said plate.

10. The throttle pedal assembly of claim 8, including a drive assembly connected between said lower portion of said treadle and said sensor.

11. The throttle pedal assembly of claim 10, wherein said drive assembly includes:

a first drive link having one end thereof pivotally connected to said lower portion of said treadle,

a second drive link having one end thereof pivotally connected to the opposite end of said first link, the other end of said second link being drivingly connected to said sensor.

12. The throttle pedal assembly of claim 10, wherein:

said hinge is formed on said plate adjacent said opening, and

said lower portion of said treadle extends downwardly from said hinge and forms a lever arm for transmitting force to said drive assembly.

13. The throttle pedal assembly of claim 8, including at least one compression spring engaging said upper portion of said treadle, and wherein said plate includes a pocket therein, said spring being seated within said pocket.

14. The throttle pedal assembly of claim 8, wherein said upper portion of said treadle extends substantially parallel to said plate when said treadle is in said wide open throttle position thereof.

15. The throttle pedal assembly of claim 8, wherein said hinge includes:

a clevis on one end of and formed integral with said plate,

a mounting ear formed on and integral with said treadle, and

a clevis pin pivotally mounting said ear on said clevis.

16. The throttle pedal assembly of claim 8, wherein said sensor is mounted on the bottom of said plate.

17. An electronic throttle control pedal assembly of a vehicle, comprising:

a base mounted on a floor of said vehicle and including a lower portion disposed beneath said floor;

a treadle mounted on said base for pivotal movement between a closed throttle position and a wide open throttle position, said treadle including an upper portion and a lower portion extending downwardly beneath said floor;

at least one compression spring for biasing said treadle toward said closed throttle position, said spring engaging said upper treadle portion and seated within said lower portion of said base; and

,

a position sensor for sensing the position of said treadle and generating an electrical signal indicative of said treadle position.

18. The throttle pedal assembly of claim 17, wherein said base includes a recess therein and said spring is captured within said recess.

19. The throttle pedal assembly of claim 18, wherein said base includes:

a base mounting plate adapted to be mounted over said vehicle floor,

an opening in said base plate through which said lower portion of said treadle extends, and

a pivotal support adjacent said opening for pivotally mounting said treadle on said base,

said lower portion of said base, said plate and said pivotal support being of unitary construction.

20. The throttle pedal assembly of claim 17, including a link assembly mounted on said lower portion of said base and drivingly connecting said lower portion of said treadle with said sensor.