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AssigneeIsoport Verbundbauteile Ges. m.b.H.
InventorsHerbert Woltron, Christian Huber
Estimating the term…
A plastic leaf spring with spring-eyes at the spring-ends has a spring-eye section (1) or a spring-eye body (15, 28) of fiber-reinforced plastic, with the spring-eye section (1) integrated in the leaf spring body or the spring-eye body (15, 28) manufactured separately from it. The spring-eye section (1) or spring-eye body (15, 28) each contain a layer (2, 16, 29) of essentially constant thickness with a center section (4, 18, 31) wrapping the spring-eye opening, and two connecting sections (3, 17, 32) appropriately essentially parallel to each other, with the outside surface of the layer (2, 16, 29) forming a hollow groove (13, 24, 33) at least one transition between the center section (4, 18, 31) and the connecting sections (3, 17, 32). The strength of the plastic leaf spring according to the invention is substantially increased through appropriately plate-shaped reinforcing elements (11, 22, 34) form-locking and/or frictionally connected to each other, which at the outside adjoin the connecting sections (3, 17, 32) under pressure, and of which at least one touches the layer-surface also at a hollow groove (13, 24, 33).
A plastic leaf spring with at least one spring-eye section of fiber-reinforced plastic having a spring-eye opening and being arranged at one of the spring ends, which comprises a layer (2,16,29) of essentially constant thickness, with a center section (4,18,31) looping the spring-eye opening (6) and two connecting sections (3,17,32) appropriately essentially parallel to each other, with the latter appropriately forming at least part of the spring end, and with the outer surface of the layer (2,16,29) forming a hollow groove (13,24,33) at least at one transition between its center section (4,18,31) and the connecting section (3,17,32), wherein at least at one of said spring-eye sections two reinforcing elements (11,22,34) made of steel and separated from each other are provided, which outwardly adjoin these connecting section (3,17,32) under pressure, and of which at least one thereby having a rounded edge with which it touches the layer surface at the said hollow groove (13,24,33), and which are connected to each other in a form locking manner.
Dependencies are inferred from the claim text.