| 摘要 |
PURPOSE:A manner where an elastic substance like rubber is secured between inside and outside members while the elastic substance is evenly pressed without generating a wrinkle. CONSTITUTION:A ringlike rubber 2' is set in a fitting hole 4' opened through an outside race 3'. After an inside race 1' is inserted little from the top end of the ringlike rubber 2', a pressurized fluid 17 is supplied from a fluid feed hole 13 into an inside cavity 15 until the fluid is charged fully in a compressed space formed by the inside cavity 15 and the inside race 1'. Then when the inside race 1' is moved down by a pressure P, the ringlike rubber 2' is evenly subjected to a pressure Po. The rubber 2' is pressed against a keep plate 9 under a distributed pressure produced on a lower area 19 and closely stuck to the internal face of the hole 4' through the outside race 3' so that a part 20 is widened due to the increased inner pressure Po to form a gap 18. As a result, the inside race 1' is lowered as much as a fluid discharged from the gap 18 plus a changed volume equivalent to a compressed elastic substance. |
