Rotation transmitting member, coupling directly connected to shafts, and shaft connecting mechanism

摘要

A more durable rotation transmitting member for a coupling directly connected to shafts has: drive-side rotation transmitting cushion to which an input shaft is directly connected; and a hub to which an output shaft is directly connected. Two parallel flat surfaces are formed on the outer periphery of the front end of the input shaft, and a shaft hole receives the front end of the input shaft and is formed in the rotation transmitting cushion. Surfaces of the inner wall of the shaft hole protrude toward the axis (O) to face input shaft front end flat surfaces. Each protruding surface comprises two flat sloped surfaces extending in the direction of the axis (O). When the input shaft starts to rotate, each front end flat of the front end comes into surface contact with one of the protruding surface sloped surfaces which faces the flat surface.

主权项

1. A rotation transmitting member which is attached to an end portion of a first shaft rotating around an axis and engages with a hub attached to an end portion of a second shaft rotating around the axis, the rotation transmitting member comprising:
a first plate which is placed on a side of the first shaft, the first plate having a hole passing through the first plate in the direction of the axis; and a second plate which is placed on a side of the second shaft, the second plate having an elastic coefficient different from that of the first plate, the second plate having a hole leading to the hole of the first plate so that the holes formed in the first and second plates together form a shaft hole into which the end portion of the first shaft is inserted, the first shaft having a flat surface on an outer periphery surface of the end portion of the first shaft, wherein: on an inner wall of the hole formed in the plate having a larger elastic coefficient out of the first and second plates, there are formed two inclined surfaces which is opposed to the flat surface of the end portion of the first shaft, the inclined surfaces are inclined inward in a radial direction of the shaft hole from both sides of an area of the inclined surfaces toward a center of the area, along the axis, and the end portion of the first shaft is fitted into the hole of the plate having the larger elastic coefficient to result in a clearance fit; and on an inner wall of the hole formed in the plate having a smaller elastic coefficient out of the first and second plates, there is formed a flat surface which is opposed to the flat surface of the end portion of the first shaft, and the end portion of the first shaft is fitted into the hole of the plate having the smaller elastic coefficient such that there is no clearance between the flat surface of the inner wall and the flat surface of the end portion of the first shaft.