Waterproof device for joint section

摘要

The waterproof device includes an elastic seal member for covering a joint section rotatably connecting a pair of rods. On both ends of the seal member are provided covering sections for waterproofing the sides of both rods, between which covering sections are located a displacement offsetting section. This displacement offsetting section includes thick and thin strips formed toward both ends in a manner to alternately locate thick and thin strips. The strips are formed on the peripheral surface of the displacement offsetting section at regular intervals.