| 摘要 |
PURPOSE:To remove a half division-like unstable element by inserting a step part formed on one end side of the 2nd cylindrical plug nut member from the other end side of the 1st cylindrical plug nut member until the step part is abutted upon the 2nd stepped surface and forming an engaging groove of a plane projection part of a sleeve adaptor. CONSTITUTION:The 1st cylindrical plug nut member 11a is provided with a guide groove 12 into which the plane projection part 10 of the sleeve adaptor 9 can be inserted from its one end surface and the 2nd stepped surface 15 obtained by rotating the sleeve adaptor 9 in the peripheral direction and subtracting the size of the inside surface 13 of the projection part 10 which corresponds to the 1st stepped surface 14 and the axial direction size of the projection part 10 from the 1st stepped surface 14. The 2nd cylindrical plug nut member 16 is inserted from the other end surface of the 1st cylindrical plug nut member 11a until the 2nd member 16 is abutted upon the 2nd stepped surface 15 and united with the 1st member 11a by press fit or adhesion to constitute a plug nut. Consequently, the engaging groove 17 to be engaged with the projection part 10 is formed in the peripheral direction. |
