Configuration for preventing contact corrosion in magnesium wheels
AssigneeStahlschmidt & Maiworm GmbH
InventorsFriedhelm Maiworm, Hans-Joachim Pforr
Life of this patent
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Abstract
In order to prevent contact corrosion when a magnesium wheel is fixed to a wheel mount of a motor vehicle, a configuration is provided in which an annular aluminum spacer is inserted between an inner contact surface of the magnesium wheel and the wheel mount in the vicinity of fixing bores. A central centering device in the form of an annular plastic adapter is squeezed into a hub bore of the magnesium wheel in order to cover the radially inner peripheral surface of the spacer and to center the same.
Claims7
In a fixation of a magnesium wheel having an inner contact surface, a hub bore and fixing bores, to a wheel mount of a motor vehicle having a wheel mounting surface, a configuration for preventing contact corrosion in the fixation, comprising:
- an annular aluminum spacer having a radially inner peripheral surface and being inserted between the inner contact surface of the magnesium wheel and the wheel mounting surface of the wheel mount in the vicinity of the fixing bores;
- and
- centering means in the form of an annular plastic adapter being squeezed into the hub bore, covering said radially inner peripheral surface of said spacer and centering said spacer;
- wherein said spacer has axially parallel bores formed therein corresponding to the fixing bores in the magnesium wheel, said inner peripheral surface of said spacer tapers conically towards the magnesium wheel, and said plastic adapter has a conically widening outer peripheral surface corresponding to and bearing against said inner peripheral surface of said spacer.
Dependencies are inferred from the claim text.