Abstract: The invention relates to a method for producing leaf springs from a fiber composite material, for which a plurality of layers of fibers soaked or impregnated with synthetic resin in order to build up a not yet hardened unfinished leaf. The unfinished leaf spring is arranged in a compression mold, and the unfinished leaf spring is hardened under the influence of a predetermined pressing force and temperature curve over time to give a finished leaf spring. In order to reduce production costs, according to the invention a plurality of unfinished leaf springs are arranged vertically one above the other in the compression mold and the unfinished leaf springs are simultaneously hardened in the compression mold to give leaf springs.

Abstract: A leaf spring made of a fiber composite material having integrated bearing holes and a method for producing is disclosed. The method comprises the steps of cutting prepreg strips of a predetermined length from a prepreg strand, removing cut-outs from the particular prepreg strip in the axial ends where a bearing hole should be formed, laying a plurality of prepreg strips one over the other in a prepreg stack in alternation so that the surfaces of the prepreg strips are flush to form a raw leaf spring forming a bearing hole by deforming an axial end of the prepreg stack in a plane perpendicular to the longitudinal extension (L) and perpendicular to the transverse extension (B) of the prepreg stack, setting the raw sheet spring to form the finished leaf spring in a mold with a suitable setting pressure and a suitable setting temperature.

Abstract: A leaf spring made of a fiber composite material having integrated bearing holes and a method for producing is disclosed. The method comprises the steps of cutting prepreg strips of a predetermined length from a prepreg strand, removing cut-outs from the particular prepreg strip in the axial ends where a bearing hole should be formed, laying a plurality of prepreg strips one over the other in a prepreg stack in alternation so that the surfaces of the prepreg strips are flush to form a raw leaf spring forming a bearing hole by deforming an axial end of the prepreg stack in a plane perpendicular to the longitudinal extension (L) and perpendicular to the transverse extension (B) of the prepreg stack, setting the raw sheet spring to form the finished leaf spring in a mold with a suitable setting pressure and a suitable setting temperature.

Abstract: Leaf spring (1) for a wheel suspension on a motor vehicle is produced from a fiber composite material. Leaf spring includes a central longitudinal section (3) and two adjoining axial end sections (10, 11) tapered in relation to the width of the leaf spring. Resin-impregnated unidirectional fibers (23) extend axially, without being cut, between the axial ends (4, 5) of the leaf spring (1). An unfinished leaf spring (2) includes axial end sections (10, 11) with a substantially V-shaped recess or final geometry, thereby forming two legs (8, 9) that extend at angles to the longitudinal extension of the unfinished leaf spring (2), said legs (8, 9) resting closely against each other in the finished leaf spring (1). Individual elongate segments (6; 13, 14) of substantially identical geometry which are separately produced as fiber composite bodies and which are assembled before being cured form the leaf spring (1, 2).

Abstract: The invention relates to a leaf spring (1) consisting of a fibre-composite material for use in a vehicle. To prevent cracking or the escape of leaf spring material on the longitudinal edges (10) of said leaf spring (1) when the latter is fixed to a vehicle, according to the invention at least the upper face (13) and/or the lower face (14) of the leaf spring (1) are convex transversally to the longitudinal extension of said spring.

Abstract: The invention relates to a leaf spring (1) consisting of a fibre-composite material and having a central longitudinal section (2) and two adjoining axial end sections for a wheel suspension in a vehicle, the end sections of said leaf spring tapering with respect to the leaf spring width. The leaf spring (1) is composed of resin-impregnated fibre layers and axially orientated uncut first fibres (6) of the fibre-composite material extend the full length of the leaf spring (1) to the two axial ends (5) of said spring. The axial ends (5) of the unfinished untreated leaf spring (1?), when viewed from above, have an essentially V-shaped geometry or an essentially V-shaped notch and thus form two respective limbs (8, 9) lying transversally to the longitudinal extension of the axis of the untreated leaf spring (11), said limbs (8, 9) abutting one another in the finished leaf spring (1).