| 摘要 |
<p>1,190,929. Disc brakes. GIRLING Ltd. 11 Sept., 1967 [22 Sept., 1966], No. 42270/66. Heading F2E. In a multi-disc brake one actuator 154 acts on the inner pad assemblies 158, 159 and another actuator 165 acts on the outer pad assemblies 171, 172 by means of a yoke 130, 133 136 slidably supported on a body member 50 so as to straddle the outer peripheries of the discs. The brake has a fixed body 150 in which rods 136 slide. Attached to the ends of the rods 136 are beams 131, 133 so that the piston 166 acts directly on the pad assembly 171 and by reaction via rods 136 and beam 133 on the pad assembly 172. Pairs of actuators 165 and 154 are provided (Figs. 5 and 8, not shown) connected hydraulically by a flexible pipe 170. The central pair of actuators 154 are mounted in a cylinder block 148 which slides by means of keys 147 in the body 150. A heat barrier 146 is positioned between the cylinder block 148 and back plate 157 of pad 158. The pads are prevented from radial outward movement by pins 176 which can be removed for pad replacement. The back plates 157 are shaped to correspond to the internal surface (175, Fig. 8, not shown) of the body 150 against which they rest. Hydraulic fluid inlet is supplied to a connection (162) in the right-hand cylinder 156 (not shown) and one of the cylinders 167 has a bleeder (163A, Fig. 5, not shown). In a modified brake each actuator 154 is replaced by a pair of opposed pistons (55, Fig. 2A, not shown). In a further modification (Fig. 9) the rods 36 are prevented from contacting the walls 37 of the body 150 through which they pass by metal lined resilient bushes 85 such as of rubber placed between the rods and the body. Rubber boots 86 secured by spring rings 87 prevent dirt entering the sliding connection. The beams 31, 33 are tiltable to allow for wedge-shaped pad wear by including washers 91, 94, 95 with spherical surfaces at the ends of the rods 36 between the head 38 and nuts 39, 40 of the rods and the beams 31, 33.</p> |
