| 摘要 |
A telescopic drive shaft includes an axially extending inner shaft member slidably supported within an axially extending tubular shaped outer shaft member. Rolling bodies are mounted in one or a plurality of support members secured to the inner or outer shaft member. The rolling bodies project and roll along axially extending grooves in the other of the inner and outer shaft members. The rolling bodies provide relative sliding movement between the shaft members and also effect torque transmission between the shaft members. Each rolling body extends into at least one ring-shaped recess in its support member and guide balls located in the recess support the rolling body. Each recess is located in a plane parallel to the axis of the drive shaft, at least three guide balls are located in each recess, though a full ring of guide balls can be used.
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