Patent ID: 7973624

Claim:
An electromagnetic switch for an electrical starter motor for providing control to bring a starter pinion into engagement when starting an internal combustion engine, comprising: a housing; an armature of a control lever electromagnetically controllable therein; and a flexible protective cap which seals a transition from a housing to the armature, the protective cap being pot-shaped having a pot opening and a pot floor, the pot floor having a circular opening having a thickened ring for providing a form-locking connection to the armature, and the pot opening being reinforced at its circumferential edge for the form-locking connection to the housing, the pot floor having a first bending region and a second bending region, in cross section, wherein the protective cap includes an arrangement, on its inner wall for connecting to the housing, which is connectable to the housing in a form-locking manner, each of the first and the second bending regions is radially stepped and contributes to a buckling behavior of the protective cap, such that when the pot floor is displaced inwards towards the housing, a plurality of bucklings produces a rounded folding of the pot floor.