JPS551243A - Driving axle apparatus - Google Patents

Abstract

PURPOSE: To prevent the generation of noise by making a driving axle in double shaft consisting of the center shaft and the outer pipe shaft, and connecting the both end parts of the outer pipe shaft onto the center shaft so so to prevent turn, and by making the turn stop connection part at one end to idle connection, and obtaining a spring constant of the axle suitable for transmission torque.

CONSTITUTION: End pipes 11 and 12 are welded onto the both ends of an outer pipe shaft 3, and on the inner hole of each end pipe 11, 12, spline inner teeth lines 11a and 12a are formed which are inserted onto the splines 4 and 9 of a center shaft 2, and the teeth line 12a is broken off alternately. Thus, the outer pipe shaft 3, on the end pipe 11 side, is closely contacted with the center shaft 2, suppressing turning, and on the end pipe 12 side, is connected with the center shaft 2 with a play. In free state, a preparatory pressure torque b is applied to the end pipe 12 so that the end pipe is pressed onto the spline 9 in the direction of backward movement and turn. Thus, the spring constant of an axle 1 is made higher as the addition of constants of the shafts 2 and 3 in the vicinity of neutral, first, and second speed, and made lower as the spring constant of the shaft 2 in the vicinity of each third and fourth speed, and a variety of noise is suppressed.

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