Abstract: A connecting element for the detachable connecting of two frame components, which, within a casing, has at least one retaining element, with which the connecting element and also the frame profile can be connected in a detachable manner with the support profile. Within the casing, an eccentric cam is rotatably positioned to conduct the retaining element in a longitudinally movable manner in the casing so that a component of the retaining element projecting out of the frontal side of the casing can be brought into engagement with an undercut longitudinal groove of the support profile. In the discharge position of the retaining element, the eccentric cam head of the eccentric cam can be pressed into the casing against the force of a spring to be engaged in a boring of a frame profile. A safety mechanism prevents, in the insertion position of the retaining element, the axial movability of the eccentric cam.

Abstract: A connecting element for the releasable connection of two structural parts of a stand, in particular a support section and a frame section, includes a housing and at least one locking element. An eccentric is rotatably supported in the housing locking element is guided longitudinally in the housing and has a clamping portion protruding from the housing to be introduced in an undercut groove of the support section and clamped therein. An eccentric head (76) of the may be locked in a bore hole of the frame section. The clamping portion of the locking element may be rotated within a limited angular range. The locking element is connected displaceably by a pulling element with the eccentric the clamping portion is a transverse bar.

Abstract: A connector for detachably joining one profile section to another in a framework assembly comprises a housing having a bottom part and a lid connected to one another by means of snap-lock coupling elements. The housing is insertable into a longitudinal recess at one end face of a horizontal profile section. A latch is slidably disposed in the housing and has, at an end projecting from the housing, a hook for engaging an inwardly facing surface of a vertical profile section. At an end opposite the hook, the latch has a rectangular aperture traversed by a substantially cylindrical eccentric pin projecting from the housing of the connector into a transverse bore in the horizontal profile section.