| 摘要 |
PROBLEM TO BE SOLVED: To secure high sealing performance without deteriorating a moldability in a joint boot mounted in an outer case with a non-circular outer peripheral form. SOLUTION: In a large diameter side mounting part 14 mounted in an outer case 6, the inner peripheral shape is formed so as to be protruded inward in a peripheral direction in a plurality of circumferential parts. The protruded part 24 is composed of an inside wall part 26 protruded in a curved shape inward in a peripheral direction, an arc-shaped outside wall part 28 forming a part of an outer peripheral surface of the large diameter side mounting part, a center supporting wall 30 extending in a radial direction for coupling the inside wall part and the outside wall part at the center in the circumference directions of both parts, and a left and right side supporting wall 32 for coupling the inside wall part and the outside wall part on both sides. The side supporting wall is inclined so as to get closer to the center supporting wall 30 as it goes to the outside. COPYRIGHT: (C)2006,JPO&NCIPI
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