Patent ID: 8506202
Filing Date: 2013-08-13
Classification: F16D,Y10T

Abstract:
1. A constant velocity universal joint including an outer joint component, an inner joint component inserted in the outer joint component, and a torque transmitting component that is interposed between the outer joint component and the inner joint component and performs torque transmission, the constant velocity universal joint comprising: a recess-projection engagement configuration that connects the inner joint component and a shaft pressed fitted into the inner joint component, wherein: the recess-projection engagement configuration has axially-extending projections provided on one of an outer diameter surface of the shaft and an inner diameter surface of the inner joint component, and recesses engaging with the projections in close contact and formed on the other of the outer diameter surface of the shaft and the inner diameter surface of the inner joint component by a transfer of the shape of the projections upon being press-fitted into the other of the outer diameter surface of the shaft and the inner diameter surface of the inner joint component along an axial direction, ends of the projections, on a press-fitting starting end side, are formed without chamfering, concave portions are formed, on the one of the outer diameter surface of the shaft and the inner diameter surface of the inner joint component, between the projections that are adjacent in the circumferential direction, convex portions are formed, on the other of the outer diameter surface of the shaft and the inner diameter surface of the inner joint component, between the recesses that are adjacent in the circumferential direction, protruded portions are formed by material from the formed recesses, engagement contacting regions of the projections and the recesses engaging with the projections are in close contact over the whole contacting regions, and radial gaps are formed between the concave portions and the convex portions.