| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electromagnetic coupling device allowing simplified assembly work by fixing a yoke, a shaft and a working shaft axially to one another with one snap ring. SOLUTION: This electromagnetic coupling device is provided with a yoke 1 formed of a magnetic substance and having a built-in coil 2; a cylindrical shaft 15 rotatably fitted to the inner diameter of the yoke 1 and tangentially provided with a groove 15b communicating with the inner diameter from the outer diameter; a hub 17 rotatably fitted to the outer diameter of the shaft 15; an armature 8 fitted to the hub 7 through a spring 9; a rotor 6 fixed to the shaft 15; a working shaft 16 inserted in the inner diameter of the shaft 15 and having a groove for determining the fitting position of the shaft 15; and a snap ring 17 engaged with the groove 15b and formed of an elastic body having an inner diameter locking part 17a protruded to the inner diameter of the shaft 15 and engaged with a groove of the working shaft 16, and an outer diameter locking part 17b protruded to the outer diameter of the shaft 15 to regulate the position of a member insert-fitted to the outer diameter of the shaft 15.</p> |
