| 摘要 |
1,060,639. Disc brakes. T. CAMPAGNOLO. Dec. 6, 1963 [Dec. 7, 1962], No. 48372/63. Heading F2E. A disc brake assembly comprises a caliper housing made up of two parts 1, 2 interconnected by bolts 3, the part 1 being provided with one pair of friction pads 5 adapted to be actuated by opposed hydraulic piston-andcylinder mechanisms 9, 1 (Fig. 2, not shown), and the other part 2 being provided with a second pair of opposed friction pads 6 adapted to be actuated by mechanical means. Operation of the mechanically applied friction pads 6 is effected by operation of a lever or pedal which exerts a pull on a pin 31 of a forked lever 21 to cause rotation of the latter and thereby rotate two integral,cam-plates 23 so that balls operating in inclined conical ramps are actuated to move plates 20 along the axes of cylindrical seats in the caliper body 2 and, as the plates 20 are shifted, sleeves 18 and pins 17 are carried along to urge the friction pads 6 against the brake disc. On release of the mechanical control, springs 19, which have been compressed during the braking action, return the camplates 20 through the pins 17 and sleeves 18 to cause the balls 24 to descend the conical ramps until they are brought into a central position and the friction pads 6 are thereby moved away from the disc 4 under the influence of the rotary movement of the latter and through the restoring action of flexible rings (not shown) which are provided in backing plates 15. Adjustment for wear of the friction pads 6 can be achieved by adjustment of the screwed pins 17 in their sleeves 18 and locking these two elements to one another by means of lock-nuts 30. The hydraulically operated friction pads 5 are carried by plates 7 which are mounted to rock on central projections 8 of pistons 9 formed with an annular cavity 10 and sliding in opposed cylinders 11 of the caliper part 1 (Fig. 2, not shown). |
