Coupling structure of variable length shaft
AssigneeNsk Ltd.
InventorKiyoharu Higashino
Life of this patent
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Abstract
A coupling structure of a variable length shaft, comprises a pipe member having an end formed with a plurality of slits elongated in the axial direction to be capable of expanding and diminishing in diameter, an intermediate shaft spline-fitted in the end of the pipe member, and a ring member fitted on an outer periphery of the end of the pipe member, the intermediate shaft being fastened by the end of the pipe member. A holder is releasably attached to an end of the ring member to expand a diameter thereof and thereby reduce a slide frictional resistance of the pipe member against the intermediate shaft. When the holder is released, the ring member diminishes in diameter, and a fastening force of the pipe member on the intermediate shaft is increased.
Claims6
A coupling structure of a variable length shaft, comprising:
- a pipe member having an end formed with a plurality of slits elongated in the axial direction to be capable of expanding and diminishing in diameter
- an intermediate shaft spline-fitted in the end of said pipe member;
- and
- a ring member fitted on an outer periphery of the end of said pipe member, said intermediate shaft being fastened by the end of said pipe member,
- wherein a holder is releasably attached to an end of said ring member to expand a diameter thereof and thereby reduce a slide frictional resistance of said pipe member against said intermediate shaft, and
- when said holder is released, said ring member diminishes in diameter, and a fastening force of said pipe member on said intermediate shaft is increased.
Dependencies are inferred from the claim text.