Wheel for a motor vehicle and method of making same
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsFrank Hummel, Jens Stach
Life of this patent
Estimating the term…
Abstract
A wheel for a motor vehicle includes cavities in a spoked rim structure. These cavities are provided with a removable sand core or with a remaining core, for example, made of metal foam. A rim, or a rim and a rim flange, may be connected with the spoked rim structure, so that a two-part or a three-part wheel can be produced in a simple manner.
Claims16
A wheel for a motor vehicle comprising:
- a hollow spoke arranged in a spoked rim structure between air openings, the spoked rim structure being producible in a mold tool comprising a lower mold and an upper mold;
- a remaining core formed in the hollow spoke, the remaining core projecting radially beyond a circumference of the hollow spoke into a recess formed by the lower mold and the upper mold to form a projecting core portion;
- and
- a lateral ring surface formed by a smooth-surface interior-side or exterior-side wall which projects radially beyond a respective opposite wall surface of the hollow spoke and the lateral ring surface connecting to a rim by a corresponding smooth-surface ring surface.
A wheel for a motor vehicle comprising:
- a hollow spoke arranged in a spoked rim structure between air openings, the spoked rim structure being producible in a mold tool comprising a lower mold and an upper mold;
- a removable core formed in the hollow spoke, the removable core projecting radially beyond a circumference of the hollow spoke into a recess formed by the lower mold and the upper mold to form a projecting core portion;
- and
- a lateral ring surface formed by a smooth-surface interior-side or exterior-side wall which projects radially beyond a respective opposite wall surface of the hollow spoke and the lateral ring surface connecting to a rim by a corresponding smooth-surface ring surface.
A method of making a wheel for a motor vehicle including hollow spokes arranged in a spoked rim structure between air openings, comprising:
- providing a mold tool comprising a lower mold and an upper mold;
- casting a hollow spoke of the spoked rim structure with a remaining core by way of the mold tool, wherein during casting, the remaining core projects radially beyond a circumference of the hollow spoke into a recess formed by the lower mold and the upper mold to form a projecting core portion, wherein the hollow spoke is formed with a lateral ring surface which projects radially beyond a smooth-surface interior-side or exterior-side wall of the hollow spoke;
- and
- connecting the lateral ring surface of the hollow spoke to a corresponding smooth-surface ring surface of a rim.
A method of making a wheel for a motor vehicle including hollow spokes arranged in a spoked rim structure between air openings, comprising:
- providing a mold tool comprising a lower mold and an upper mold;
- casting a hollow spoke of the spoked rim structure with a removable core by way of the mold tool, wherein during casting, the removable core projects radially beyond a circumference of the hollow spoke into a recess formed by the lower mold and the upper mold to form a projecting core portion, wherein the hollow spoke is formed with a lateral ring surface which projects radially beyond a smooth-surface interior-side or exterior-side wall of the hollow spoke;
- and
- connecting the lateral ring surface of the hollow spoke to a corresponding smooth-surface ring surface of a rim.
Dependencies are inferred from the claim text.