| 摘要 |
PURPOSE:To facilitate assembly and adjustment and to prevent parts from being strained owing to the clamping of a screw, etc., by fixing a dowel and an external tube with an adhesive tape while the head of the dowel is engaged closely with the step part of the hole of the external tube and the leg part is fitted closely in the hole of an inner tube. CONSTITUTION:At least one hole 18 having at least stepped grooves 18a and 18b is formed in the external tube 1, and holes 19 as many as said holes 18 are formed in the flange 3 of the inner tube 2. Then, the external tube 1 and internal tube 2 are engaged and the leg part 20a of the dowel 20 is fitted in a hole 19 of the flange 3 or the internal tube 2. Then, the head part 20b of the dowel 20 moves onto the step part of the hole 18, so that the top surface of the head part 20b is at the same height with the outer circumferential surface of the external tube 1. An adhesive tape 21 is stuck thereupon to fix the external tube 1 and internal tube 2. Therefore, the fitting position of the external tube 1 to the internal cylinder 2 is adjusted by removing the adhesive tape 21 without detaching parts. |
