| 摘要 |
<p>A seal structure is configured so as to provide, easily and at low cost, good sealing properties between a resin boot and a shaft or an outer case of a constant velocity joint even in an environment in which high temperature and low temperature are repeated, and the sealing properties can be maintained for a long time period. A seal structure which is formed between a small-diameter-side end section (P1) of a boot (4) and a shaft (2a) of a constant velocity joint (2) with the small-diameter-side end section fastened to the shaft by a fastening member (6). A ridge seal (10) which is continuous along the inner peripheral surface (Ps) of the region fastened by the fastening member and projects in the center direction is provided to the small-diameter-side end section, and a containing space (12) in which, with the small-diameter-end section fastened to the shaft, the ridge seal elastically deformed and curved is contained is provided to either the inner peripheral surface of the small-diameter-side end section and/or the outer peripheral surface of the shaft. The ridge seal is, while being kept in contact with the shaft under pressure, permitted to be elastically deformed in the containing space by thermal expansion and thermal contraction.</p> |
