Leaf spring of composite fibre plastics material
OwnerWalter Koflerinventor
Life of this patent
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Abstract
A leaf spring of composite fibre plastics material comprising a plurality of layers of fibre material which are disposed in superposed relationship and which are embedded in a synthetic resin matrix, wherein there are provided outer layers (1) of fibre material which extend over the entire length of the leaf spring and which are associated with the tension and compression zones and shorter inner layers (2) of fibre material of a length which is stepped in a direction towards the central zone (N). In addition to the stepped inner layers (1), also provided in the region between the neutral zone (N) and the tension and compression zones respectively are intermediate layers (3) of fibre material, the length of which is greater than the length of the adjacent inner layers (2) of fibre material.
Claims13
A leaf spring of composite fibre plastics material, said leaf spring having longitudinal ends spaced apart in a longitudinal direction and a thickness which decreases towards at least one of said ends from a region of maximum thickness and with a width which is substantially the same over at least part of the entire length, comprising a plurality of fibre material layers which are disposed in superposed relationship and which are embedded in a synthetic resin matrix, said layers including outer fibre material layers which extend over the entire length of the leaf spring in said longitudinal direction and which are associated with tension and compression zones which are located on opposite sides of a neutral zone of the spring, said layers further including shorter inner fibre material layers having lengths in said longitudinal direction which are stepped in a direction towards the neutral zone, and said layers further including intermediate layers arranged in the region between the neutral zone and the tension and compression zones respectively, said intermediate layers being between adjacent inner layers of fibre material, each of said intermediate layers having a length which is greater than the length of the adjacent inner layers of fibre material, the length of at least one of the intermediate layers of fibre material being substantially equal to the length of the outer layers of fibre material and the lengths of the remainder of the intermediate layers of fibre material being shorter than the outer layers of fibre material and being stepped in a direction towards the neutral zone.
A leaf spring of composite fibre plastics material, with a thickness which essentially decreases, towards at least one side, in the longitudinal direction from a region of maximum thickness, and with a width which is substantially the same over the entire length, comprising a plurality of fibre material layers (1, 2, 3) which are disposed in superposed relationship and which are embedded in a synthetic resin matrix, wherein there are provided outer fibre material layers (1) which extend over the entire length of the length spring and which are associated with tension and compression zones, and shorter inner fibre material layers (2) of a length which is stepped in a direction towards a neutral zone, and wherein arranged in the region between the neutral zone (N) and the tension and compression zones respectively, in addition to the stepped inner layers (2) of fibre material, are also intermediate layers (3, 3') of fibre material, the length of which is greater than the length of the adjacent inner layers (2) of fibre material, the length of the inner layers (2) of fibre material firstly decreasing in a direction towards the neutral zone (N) and then increasing again to the neutral zone (N), and the intermediate layers (3) being arranged both in the inner layer region of decreasing length and also in the inner layer region of increasing length, the intermediate layers (3) of fibre material being greater in length than the adjacent inner layers (2) of fibre material.
A leaf spring of composite fibre plastics material, with a thickness which essentially decreases, towards at least one side, in the longitudinal direction from a region of maximum thickness, and with a width which is substantially the same over the entire length, comprising a plurality of fibre material layers (1, 2, 3) which are disposed in superposed relationship and which are embedded in a synthetic resin matrix, wherein there are provided outer fibre material layers (1) which extend over the entire length of the leaf spring and which are associated with tension and compression zones, and shorter inner fibre material layers (2) of a length which is stepped in a direction towards a neutral zone, and wherein at least some of the outer layers are transversely interrupted to form separations in the region of the longitudinal ends, in the region of a force-applying means and at different spacings from the end of the spring, the spacing of the locations of separations (4) from the end of the spring increasing in proportion to an increasing distance of the respective outer layer (1") of fibre material from the surface (O) of the spring.
A leaf spring of composite fibre plastics material, with a thickness which essentially decreases towards at least one side, in the longitudinal direction from a region of maximum thickness, and with a width which is substantially the same over the entire length, comprising a plurality of fibre material layers (1, 2, 3) which are disposed in superposed relationship and which are embedded in a synthetic resin matrix, wherein there are provided outer fibre material layers (1) which extend over the entire length of the leaf spring and which are associated with tension and compression zones and shorter inner fibre material layers (2) of a length which is stepped in a direction towards a neutral zone, wherein at least one of the outer layers are transversely interrupted to form separations in the region of the longitudinal ends, in the region of a force-applying means and at different spacings from the ends of the spring, at least one of the continuous outer layers (1") of fibre material, being remote from the surface (O) of the spring, being passed with its end region through the locations of the separations (4) of the interrupted layers (1") of fibre material, toward the surface of the spring.
Dependencies are inferred from the claim text.