A combined accelerator and brake control for a motor vehicle, and a motor vehicle incorporating the same

摘要

1,059,958. Controlling motor vehicles. T. FUKUDA. Aug. 13, 1963 [Aug. 25, 1962], No. 31874/63. Heading B7H. [Also in Division F2] A combined accelerator and brake pedal arrangement for a motor vehicle comprises a pivoted control pedal 2 with a braking projection which continuously engages a vehicle braking lever 11 and an accelerator projection 5 which engages a vehicle throttle control lever 7 only in an accelerator control range of pedal 2, in which range the braking projection engages a portion c of the braking lever 11 profiled as the locus of movement of the braking projection so that lever 11 remains stationary, the arrangement being such that as the pedal is pivoted clockwise the brakes are progressively released through the braking range and the throttle opened progressively through the accelerator control range. The braking projection is coaxial with projection 5 but on the opposite side of extension 4 of the pedal 2. The braking range (p) (Fig. 2, not shown) is preferably separated from the accelerator range (r) by a neutral range (q). When the heel of the pedal 2 is depressed projection 6 of the pedal 2 rotates the lever 11 clockwise about pivot 12 and hence opens a cock 21 in a conduit 20 connecting vacuum cylinder 18 to the vehicle engine inlet manifold and thus drawing to the right both the piston in the cylinder 18 and, through link 19, lever 16 which displaces hydraulic fluid from master cylinder 17 to apply the brakes. When the pedal toe is depressed in range p, projection 5 engages limb b1 of lever 11 rotating the lever anticlockwise and closing cock 21 when a spring 22 in the cylinder 18 returns brake lever 16 to the brake released position. On further depression of the pedal, in range r, projection 5 engages portion c of the lever 11 to hold the cock 21 closed and also engages limb a1 of the throttle lever 7 to control the engine speed through rod 8. The centre of curvature of portion c when engaged by pin 5 is coincident with the axis of the pedal pivot 3 so that movement of the pedal in zone r maintains the brake released while controlling the throttle lever. The neutral zone q permits slow running of the engine without brake application. In an alternative (Fig. 3, not shown), leg b of the lever 11 operates an hydraulic master cylinder directly.