Length-adjustable Samer rod

A Samer rod extending along a longitudinal axis having a length adjustable along the longitudinal axis, comprising:

• a first element, extending along the longitudinal axis between a first coupling end and an end of an engagement section,
• a second element, extending along the longitudinal axis between a second coupling end and a receiving end,
• a receiving hole extending away from the receiving end to the second coupling end, which receiving hole extends along the longitudinal axis inside the first element,
• the engagement section being provided with an outer row of teeth extending parallel to the longitudinal axis and having evenly spaced teeth extending perpendicular to the longitudinal axis in the circumferential direction of the engagement section,
• the receiving hole being provided with an inner row of teeth extending parallel to the longitudinal axis and having evenly spaced teeth extending perpendicular to the longitudinal axis in the circumferential direction of the wall of the receiving hole, the spacing of which, in the direction of the longitudinal axis, corresponds to the spacing of the teeth of the outer row of teeth in the direction of the longitudinal axis,
• the engagement section being received in the receiving hole in such a way that the first element is pivotable about the longitudinal axis between a released position and a locked position relative to the second element,
• the inner and the outer rows of teeth being disengaged in the released position, so that the engagement section is movable parallel to the longitudinal axis in the receiving hole, and wherein the rows of teeth engage with one another in the locked position, and a movement of the engagement section relative to the receiving hole along the longitudinal axis is prevented,
• a locking ring movable along the longitudinal axis and being held in a non-twisting manner on the engagement section, and
• a catch device being mounted on the receiving end adjustable between a first position and a second position, wherein the catch device is configured such that, in the first position, the locking ring is coupled to the receiving end in a non-rotating manner and unmovable along the longitudinal axis, and wherein, in the second position, a rotation of the locking ring relative to the receiving end is permitted.