| 摘要 |
PROBLEM TO BE SOLVED: To restrict oscillation of a case with respect to a caliper or twisting of the case itself and to enable the case to be sufficiently applied to a vehicle such as a truck and the like requiring a large torque.SOLUTION: A fixing part 23 has three screw insertion segments 23d1, 23d2 and 23d3 fixed to a caliper and these screw insertion segments 23d1, 23d2, 23d3 are arranged to enclose an output shaft 39. With this arrangement as above, it is possible to fix rigidly a case 21 against the caliper at three fixing locations. In addition, when these three fixing locations are connected to each other, they may form "a plane". Accordingly, it is possible to restrict effectively an oscillation of the case 21 with respect to the caliper. Further, it is possible to restrict a twisting of the case 21 itself and it becomes possible sufficiently to adapt it for a vehicle such as a truck requiring a large torque.SELECTED DRAWING: Figure 4 |
