Height-adjustable support device for semi-trailers or the like
AssigneeSAF-HOLLAND GmbH
InventorReinhold Riedl
Life of this patent
Estimating the term…
Abstract
A support device, preferably for commercial vehicles such as semi-trailers, includes an inner support tube and an outer support tube moveable relative to one another along a longitudinal axis in a retraction and extension direction; a spindle rotated via a gear section and is arranged such that the spindle is stationary relative to the outer support tube; and a spindle nut which is mounted on the spindle, wherein the spindle nut is fixed on a mounting region of the inner support tube, and the mounting region is configured as a support edge facing the longitudinal axis.
Claims22
A support device for commercial vehicles comprising:
- an inner support tube and an outer support tube moveable relative to one another along a longitudinal axis in a retraction direction and an extension direction;
- a spindle rotated via a gear section and arranged such that the spindle is stationary relative to the outer support tube;
- and
- a spindle nut mounted on the spindle, wherein the spindle nut is fixed on a mounting region of the inner support tube, the mounting region is configured as a support edge facing the longitudinal axis, the support edge includes a support edge sided support surface, the support edge sided support surface includes a convex curve facing the gear section, the inner support tube and the spindle nut are displaceable relative to one another transverse to the longitudinal axis as the inner support tube and the outer support tube move relative to one another in the retraction and extension directions, and wherein a clearance between the inner support tube and the outer support tube is smaller than a maximum path of displacement transverse to the longitudinal axis between the spindle nut and one of the inner support tube and the outer support tube.
A method for manufacturing a support device for commercial vehicles, the method comprising the steps of:
- providing an inner support tube and an outer support tube moveable relative to one another along a longitudinal axis in a retraction direction and an extension direction, wherein the inner support tube includes a mounting region configured as a support edge facing the longitudinal axis for fixing a spindle nut;
- providing a spindle that supports the spindle nut, wherein the spindle nut comprises at least one interlocking section, the interlocking section extending transversely from the longitudinal axis, and wherein the spindle may be rotated via a gear section;
- orienting the spindle nut relative to the inner support tube such that the interlocking section is arranged in the radial direction to the longitudinal axis furthest away from a support edge contour of the support edge;
- and
- arranging the spindle nut in the inner support tube such that when the spindle nut rotates towards the inner support tube, the interlocking section comes into engagement with the support edge and is arranged at least one of below the support edge, and in alignment with the support edge in the direction of the longitudinal axis, and such that the inner support tube and the spindle nut are displaceable relative to one another transverse to the longitudinal axis as the inner support tube and the outer support tube move relative to one another in the retraction and extension directions, wherein the support edge includes a support edge sided support surface that includes a convex curve facing the gear section, and wherein a clearance between the inner support tube and the outer support tube is smaller than a maximum path of displacement transverse to the longitudinal axis between the spindle nut and one of the inner support tube and the outer support tube.
Dependencies are inferred from the claim text.