| 摘要 |
<p>PURPOSE:To improve durability by eliminating directional property by which flexural rigidity is changed due to a direction in which a leading pipe part formed with bellows is curved. CONSTITUTION:In the outer circumference of a belows 2, outer cylinders 3, 4 are connected respectively to the end parts of the bellows 2 at intervals 9. Annular buffer cushion 10 is arranged on the outer circumference of the outer cylinders 3, 4. Two annular members 5, 6 are fixed on the outer cylinders 3, 4, and they are provided with many teeth 7, 8. The teeth 7, 8 are arranged at mutually equal intervals in circular direction and so as to grasp the buffer cushion 10 from the mutually opposite directions.</p> |
