Length-adjustable Samer rod

Abstract

A Samer rod has length adjustable along a longitudinal axis. A first element extends along the axis between a first coupling end and an engagement section end, and a second element extends along the axis between a second coupling end and a receiving end. A receiving hole extends along the axis, inside the first element, away from the receiving end to the second coupling end. The engagement section has an outer row of teeth extending parallel to the axis with evenly spaced teeth extending perpendicular to the axis in the circumferential direction of the engagement section. The receiving hole has an inner row of teeth extending parallel to the axis with evenly spaced teeth extending perpendicular to the axis in the circumferential direction of the receiving hole wall. The spacing of the teeth of the two rows in the direction of the axis corresponds to one another.

The invention claimed is: 
     
       1. 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. 
 
     
     
       2. The Samer rod according to  claim 1 ,
 wherein the locking ring has first engagement elements on its outer circumferential surface and 
 wherein the catch device has a catch element pivotably held on the second element about a pivot axis extending perpendicular to the longitudinal axis, the catch element being pivotable between the first position and the second position, 
 wherein the catch element engages with the engagement elements in the first position and is pivoted away from the locking ring in the second position, so that the lock element is disengaged from the engagement elements. 
 
     
     
       3. The Samer rod according to  claim 2 , wherein the engagement elements are formed as a toothing on the outer circumference of the locking ring, and wherein the teeth of the toothing extend parallel to the longitudinal axis. 
     
     
       4. The Samer rod according to  claim 3 ,
 wherein the catch element has a U-shaped form, with two shanks connected to one another by means of a central section, 
 wherein the free ends of the shanks are pivotably connected to the receiving end, and 
 wherein the shanks engage with the toothing and the central section extends along the side of the locking ring facing away from the receiving end in the first position. 
 
     
     
       5. The Samer rod according to  claim 1 ,
 wherein the inner row of teeth has several inner tooth row sections extending linearly parallel to the longitudinal axis and being spaced apart from one another in the circumferential direction of the wall of the receiving hole, 
 wherein the outer row of teeth has several outer tooth row sections extending linearly parallel to the longitudinal axis and being spaced apart from one another in the circumferential direction of the engagement section, and 
 wherein at least one of
 the width of the inner tooth row sections in the circumferential direction of the wall of the receiving hole corresponds to the spacing of the outer tooth row sections in the circumferential direction of the engagement section, or 
 the width of the outer tooth row sections in the circumferential direction of the engagement section corresponds to the spacing of the inner tooth row sections in the circumferential direction of the wall of the receiving hole. 
 
 
     
     
       6. The Samer rod according to  claim 1 , wherein at least one of
 the first coupling end and the engagement section are rotatably connected to one another about the longitudinal axis, or 
 the second coupling end and a section of the second element, in which the receiving hole extends, are rotatably connected to one another about the longitudinal axis.