| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of an integral product formed by fastening an annular member and a member to be fastened by press-fitting.SOLUTION: A wedge member 16 disposed between press-fitting surfaces 12a, 14a between a differential case 12 and a ring gear 14 receives a force Tof an axial direction between the differential case 12 and the ring gear 14 on its one slope 16a to divide the force Tof the axial direction in a radial direction. A force of the axial direction applied between the press-fitting surfaces 12a, 14a between the differential case 12 and the ring gear 14 is reduced. A rotation force P of a direction opposite to the radial direction as a component of a force of the radial direction increases surface pressure between the press-fitting surface 12a of the differential case 12 and a press-fitting surface 16b of the wedge member 16 and surface pressure between one slope surface 14a of the ring gear 14 and one slope surface 16a of the wedge member 16. Then, a, respectively, reaction force of the axial direction generated in each of press fitting surfaces 12a, 14a, 14e, 16a, 16b is increased as a whole (F+F). |
