Guide rail for drive chains
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsKlaus Groger, Walter Mittermeier, Robert Binder, Volker Diehm
Life of this patent
Estimating the term…
Abstract
A guide rail, and method of making same, for the guiding and/or tightening of chains that are used in internal-combustion engines, for example, for driving camshafts, auxiliaries or the like is disclosed. For reasons concerning weight and manufacturing, the guide rail consists of a plastic material and is formed by a slideway lining body and a carrier. Both the carrier and the slideway lining body are produced in a progressive manufacturing cycle and are interconnected via one or several dovetailed connections.
Claims21
A guide rail for the guiding and/or tightening of chains, preferably for a control shaft drive of an internal-combustion engine, said guide rail being formed by a carrier and a slideway lining body that consists of plastic and is connected with said carrier, wherein said carrier and said slideway lining body are manufactured of a plastic material of respective different specifications in progressive manufacturing cycles and are connected with one another via at least one meshing arrangement means that reach behind one another.
A guide rail having bearing lugs that interact with bearing pins of an internal-combustion engine, wherein the bearing lugs are arranged at a carrier of the guide rail and are equipped with fixing devices that engage in a recess of the bearing pins.
A process for manufacturing a guide rail for the guiding of chains of a control shaft drive of a vehicle internal combustion engine or the like, said guide rail being formed by a carrier and a slideway lining body which are made of different plastic material and are connected to one another by at least one interengaging meshing arrangement means, said process comprising:
- producing a carrier by injection molding of a first plastic material;
- and subsequently producing a slideway lining body by injection molding of a second plastic material and combining the carrier with the slideway lining body.
Dependencies are inferred from the claim text.