Adjustable corner fitting with holding element

1. A corner fitting for a door element to be disposed on a center of rotation and/or an axis, including a first fitting element and a second fitting element, which are interconnectable while restraining the door element, wherein a restraining area forms between the fitting elements, into which the door element is insertable, and the fitting elements are formed such that a holding element is disposed between the fitting elements, which is displaceable in relation to the fitting elements, and the holding element is in connection with a connecting element, configured for supporting a door element on the center of rotation and/or the axis, wherein an attaching mechanism is incorporated at least at the holding element as well as at least at the connecting element, which is transferable between a released condition wherein the holding element is displaceable at the fitting elements, and a fixing condition wherein the holding element is non-positively or positively attached at least to one fitting element.

2. The corner fitting according to claim 1 ,

wherein the holding element is displaceable along a longitudinal extension of the fitting element in a free space, wherein the free space includes a recess in at least one fitting element and the holding element is supported in the recess to be movable.

3. The corner fitting according to claim 2 ,

wherein the attaching mechanism is configured such that in the released condition, a static friction is effective between the holding element and the recess, which is considerably lower than the static friction, which is effective in the fixing condition between the holding element and the recess.

4. The corner fitting according to claim 2 ,

wherein in the fixing condition, a clamping between the holding element and the recess prevents a movement of the holding element in relation to the fitting element.

5. The corner fitting according to claim 4 ,

wherein the attaching mechanism is configured such that during the transfer from the fixing condition to the released condition and from the released condition to the fixing condition, the holding element performs a stroke movement within the free space.

6. The corner fitting according to claim 2 ,

wherein the recess extends along the longitudinal extension of the fitting element and the holding element is supported with a head part in the recess to be movable,

wherein, in the fixing condition, the holding element with a resting portion located at the head part, abuts against the recess.

7. The corner fitting according to claim 6 ,

wherein the holding element includes a connecting part, to which the connecting element is attached, via the attaching element, wherein the head part and the connecting part are aligned vertically to each other and/or form a monolithic or integral structural component.

8. The corner fitting according to claim 7 ,

wherein the holding element is movable via the connecting part along the longitudinal extension of the fitting element in a free space in a first direction of movement, wherein the free space is configured such that the holding element is movable in a second direction of movement orthogonally to the first direction of movement.

9. The corner fitting according to claim 1 ,

wherein a transfer from the fixing condition into the released condition and from the released condition to the fixing condition can be performed via an attaching element, which is disposed at the connecting element and is accessible for the user from the outside.

10. The corner fitting according to claim 1 ,

wherein the holding element includes at least one bore, into which the attaching element engages at least partially in the fixing condition, whereby an increased clamping is effective between the holding element and the recess, and in the released condition, the attaching element engages far less into the bore or is located spaced apart from the bore such that the clamping is weaker or the clamping is almost rescinded.

11. The corner fitting according to claim 10 ,

wherein the connecting element includes a through-hole, in which the attaching element is disposed, wherein the through-hole extends as far as to the bore, and in the released condition, the through-hole is not aligned flush with the bore.

12. The corner fitting according to claim 11 ,

wherein the bore includes means, which, when the attaching element engages in the bore, cause the connecting element to move vertically to the direction of movement of the attaching element.

13. The corner fitting according to claim 11 ,

wherein the bore and/or the through-hole include an internal thread with which the attaching element reaches non-positive or positive engagement.

14. The corner fitting according to claim 1 ,

wherein in the fixing condition, the surface of the engaging, respectively resting portion and/or of the recess, which is effective at the engaging, respectively resting portion has a roughness and/or a ribbing.

15. A method for disposing a door element on a center of rotation and/or an axis via a corner fitting according to claim 1 , including a first fitting element and a second fitting element, which are interconnected while restraining the door element,

that the corner fitting includes an attaching mechanism, which is transferable between a released condition and a fixing condition, wherein, in the released condition, a connecting element, which is supported in the corner fitting to be displaceable, is aligned to the center of rotation and/or the axis, and after aligning the connecting element on the center of rotation and/or an axis, the attaching mechanism is transferred into the fixing condition such that the holding element is attached to at least one fitting element in a clamped manner, whereby a relative movement between the holding element and the fitting element is excluded.