Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
  • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
  • G05G1/30—Controlling members actuated by foot
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/04—Brake-action initiating means for personal initiation foot actuated
  • B60T7/06—Disposition of pedal
  • B60T7/065—Disposition of pedal with means to prevent injuries in case of collision
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
  • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
  • G05G1/30—Controlling members actuated by foot
  • G05G1/32—Controlling members actuated by foot with means to prevent injury
  • G05G1/323—Controlling members actuated by foot with means to prevent injury means disconnecting the connection between pedal and controlled member, e.g. by breaking or bending the connecting rod

Definitions

• This invention relates to a control pedal and a control linkage for a vehicle.
• GB-A-2322836 describes pedals which are designed to deform so that in an accident
• a control pedal for a vehicle such as a motorcycle
• brake pedal comprising an upper member and a lower member, which are hingedly
• the distal end of the arm being arranged for pivotal mounting
• the pedal further including biasing means arranged to prevent
• pedal fixing means for coupling to a vehicle pedal
• mechanism fixing means for coupling to a vehicle mechanism to be controlled
• biasing means arranged to bias the pedal fixing means and mechanism fixing means
• the linkage is arranged to move towards a second position in
• vehicle mechanism such as a brake servo and for applying a force to the vehicle
• a force is applied in the operating direction which exceeds a predetermined threshold, o so that the force required to be applied to the foot pedal to operate the vehicle
• vehicle mechanism is limited to a predetermined maximum applied force.
• Figure 1 is a perspective view of a known pedal
• FIG. 2 is a schematic side elevation of a pedal in accordance with the invention.
• Figure 3 is a graph showing force on the foot plate of the pedal illustrated in Figure
• Figure 4 is a graph showing force on the foot plate of the pedal illustrated in Figure
• Figure 5 is a schematic side elevation of a buffer in accordance with the invention.
• FIG. 6 is a schematic side elevation of an alternative pedal in accordance with the
• Figure 7 is a schematic cross section through a linkage in accordance with the
• Figure 8 is a schematic cross section through a brake servo mechanism incorporating
• Figure 9 is a schematic cross section through a modified linkage in accordance with
• Figure 10 is a graph showing force on the foot plate of a pedal connected to the
• Figure 11 is a schematic perspective view of a linkage in accordance with the
• Figure 12 is a schematic cross section of the linkage illustrated in Figure 11 ;
• Figure 13 is an exploded view of a pedal, servo mechanism and the linkage illustrated
• the known pedal illustrated in Figure 1 has a pivot tube 1 located at one end of a main
• the pedal is mounted to a vehicle by the pivot tube 1 and is caused to move about the pivot tube 1 by force
• a control linkage 5 is pivotally mounted at point 4 partwa ⁇
• a driver may apply a force of the order of 250 deca-newtons to the
• Plastic materials are not generally used as brake pedals as softer plastic
• the invention described below allows a pedal to be used which is made of a material
• a suitable pedal may be based on the pedal described in our
• foot pedals made from plastic materials may also be used.
• the general principle is to direct two different levels of force to different parts of the
• an upper pedal arm 6 is rotatably connected to the vehicle
• the upper arm 6 also includes a hinge point 8 for the connection
• a lower arm 9 has a foot plate 10 which is formed at the lower part of the lower arm 9.
• the lower arm 9 is hingedly connected to the upper arm 6 by an axle 1 1.
• connection between the upper and lower arms 6 and 9 is made by co-operating hooks
• the hooks 12 and 13 permit rotation of the lower arm 9 about the axle 1 1 generally
• a compression spring 14 is located on lugs 15 and 16 formed respectively on the
• the compression spring 14 is precompressed so that the upper and lower arms 6 and
• the pedal acts in a generally
• precompression of the spring 14 This is preferably adjusted to occur at a point where
• Figure 4 shows the force transmitted by the pedal against the force applied to the foot
• the point at which the pedal comes into contact with the buffer may be adjusted which has the effect of adjusting the position
• the buffer may include side wings 17 and 18 which serve to
• compression spring 14 may be replaced by any generally
• resilient compressible material or biasing means are Typical examples. Typical examples are a leaf spring,
• a gas spring a torsion spring, a tension spring, a torsion bar or elastomeric washers.
• Figure 6 shows an alternative arrangement for the pedal in which a tension spring 20
• the spring does not need to be held in compression. Instead, the spring is pretensioned
• a force reducing effect may instead be achieved using a
• the control linkage 58 is operable to transmit force from the pedal 50 to the servo 56
• control linkag 58 has an outer member 64 which
• the outer member 64 carries the pedal fixing means 60.
• the inner member 66 is held within the outer member 64 by formations 74.
• coil spring 72 is held under precompression.
• Figure 8 shows a modification in which the servo fixing means 62 is dispensed with and instead the linkage 58 forms an integral part of the servo mechanism 56.
• FIG. 9 This includes a damper arrangement 80 coupled effectively in series with
• damper arrangement 80 could be replaced by another
• Figure 1 1 shows one form of the linkage 58. A typical cross-section is shown in
• Figures 13 shows the linkage 58 of Figure 13 in an exploded view ready for assembly

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Braking Elements And Transmission Devices (AREA)
• Mechanical Control Devices (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=10864829

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (7)

• 1999
  • 1999-11-20 GB GB9927427A patent/GB2356443B/en not_active Expired - Fee Related
• 2000
  • 2000-11-17 WO PCT/GB2000/004393 patent/WO2001038151A1/en not_active Application Discontinuation
  • 2000-11-17 AU AU14057/01A patent/AU1405701A/en not_active Abandoned
  • 2000-11-17 EP EP00976178A patent/EP1268246A1/de not_active Withdrawn

Non-Patent Citations (1)

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