Shaft connecting structure and starter

The utility model relates to a shaft connecting structure, it includes: the axle sleeve is provided with the internal spline on its inner wall, the primary shaft, its have the stop part and with the external splines of internal spline looks adaptation, wherein, the primary shaft and axle sleeve structure is for making the first end of the primary shaft can pass the axle sleeve, external splines and internal spline adaptation of each other to exceed dead axle cover and the relative position of the primary shaft on the axis direction are constructed to the stop part, and the secondary shaft, its structure is served for couple the first of the primary shaft coaxially. The utility model discloses still relate to the starter including above -mentioned shaft connecting structure. The utility model discloses a shaft connecting structure has simple to operate, joint advantage such as reliable to the figure of tooth that can be through increasing the internal spline on the one way clutch makes the stress that bears on