Corner fitting with increased clamping force

Abstract

A corner fitting for a door element to be disposed on a center of rotation or an axis, including first and second fitting elements, which, at least sectionwise, each include a locating portion for the abutment against the door element, and are interconnectable while restraining the door element in a restraining area. The fitting elements delimit the restraining area, including at least one attaching unit for reliably clamping the door element between the fitting elements. The attaching unit includes first attaching means, disposed at the first fitting element and/or at the second fitting element, and second attaching means, disposed at the second fitting element and/or at the first fitting element. The attaching means are non-positively and/or positively interconnected. The first attaching means includes an engagement area, into which the second attaching means acts, wherein the engagement area extends at least partially into the restraining area via the locating.

Claims

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, at least sectionwise, each include a locating portion for the abutment against the door element, and are interconnectable while restraining the door element in a restraining area, wherein the fitting elements delimit the restraining area, including at least one attaching unit for reliably clamping the door element between the fitting elements, wherein the attaching unit includes a first attaching means, which is disposed at the first fitting element and/or at the second fitting element, and a second attaching means, which is disposed at the second fitting element and/or at the first fitting element, and the two attaching means are non-positively or positively interconnected, wherein the first attaching means includes an engagement area, into which the second attaching means acts, wherein the engagement area extends at least partially into the restraining area via the locating portion and/or the locating portion.

2. The corner fitting according to claim 1, wherein the engagement area includes a thread, which cooperates with a counter-thread of the second attaching means.

3. The corner fitting according to claim 1, wherein the engagement area is configured as an internal thread and the second attaching means includes a screw element located in the engagement area of the first attaching means.

4. The corner fitting according to claim 1, wherein the first attaching means includes a profiled exterior contour, wherein the first fitting element and/or the second fitting element include/s at least one reception, in which the first attaching means is retained, wherein the geometrics of the reception are adapted to the profiled exterior contour of the first attaching means.

5. The corner fitting according to claim 4, wherein the profiled exterior contour is a multi-edge contour.

6. The corner fitting according to claim 1, wherein a holding element is disposed between both fitting elements, which is displaceable in relation to the fitting elements, and the holding element is in operative connection with a connecting element, configured for supporting the door element on the center of rotation and/or the axis, wherein an attaching mechanism is incorporated at the holding element as well as at the connecting element, which is transferable between a released condition and a fixing condition, wherein, in the released condition, the holding element is displaceable at the fitting elements, and in the fixing condition the holding element is non-positively or positively attached at least to one fitting element.

7. The corner fitting (1) according to claim 6, wherein the holding element is movable along the longitudinal extension of at least one 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.

8. The corner fitting according to claim 7, wherein the recess, in which the holding element is disposed to be movable, is provided between a first reception and a second reception.

9. The corner fitting according to claim 8, wherein the first reception and the second reception are located at one height, in relation to the height of the recess for the holding element.

10. The corner fitting according to claim 1, wherein the fitting element and/or the second fitting element include/s at least two receptions for accommodating attaching units.

11. The corner fitting according to claim 1, wherein a plurality of receptions are provided, the receptions being disposed at least partially offset in height with regard to the longitudinal extension of the recess in the fitting elements.

12. The corner fitting according to claim 1, wherein the attaching unit is configured such that a tightening torque of up to approximately 15 Nm can be applied to the fitting elements for achieving a reliable clamping of the door element.

13. The corner fitting according to claim 1, wherein the attaching unit is made from metal.

14. The corner fitting according to claim 1, further including a free space disposed between the fitting elements, wherein the engagement area with a length extends into the free space.

15. The corner fitting according to claim 1, wherein the fitting elements have a length of approximately 16 cm, a height of approximately 5 cm, and a depth from approximately 0.6 cm to approximately 1.5 cm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the drawings:

(2) FIG. 1 shows a corner fitting reduced to the features essential to the disclosure in a perspective exploded view, and

(3) FIG. 2 shows an inventive mounted corner fitting, which is clamped to the left lower corner of a door element, in a perspective side view.

(4) Throughout the different Figures, same parts are always identified by the same reference numerals, and therefore they will be normally described once.

DETAILED DESCRIPTION OF THE DRAWINGS

(5) FIG. 1 shows a corner fitting 1 for a door element to be disposed on a center of rotation and/or an axis including a first fitting element 3 and a second fitting element 4. The fitting element 3 and the fitting element 4 include each at least sectionwise a locating portion 3.1 and 4.1. For illustration purposes, further elements of the corner fitting, such as the intermediate layers between the locating portions 3.1 and 4.1, and the door element, etc. have been omitted, wherein however the functioning of the illustrated corner fitting 1 should not to be limited.

(6) Each of the fitting elements 3 and 4 includes receptions 9 for passing, respectively for inserting first attaching means 5 and second attaching means 6 there through, which serve for interconnecting the fitting elements 3 and 4. For this purpose, the attaching means are passed through through-holes in a door element restrained between the fitting elements 3 and 4. In the present case, the second attaching means 6 are screw elements in the shape of screws, which engage on both sides, i.e. both through receptions 9 of the fitting element 3 and through receptions 9 of the fitting element 4. Respectively on the opposite side of the second attaching means 6 inserted, respectively passed through the receptions 9, first attaching means 5 in the shape of riveted nuts are inserted into the receptions 9 of the fitting element 3 and of the fitting element 4.

(7) The second attaching means 6 configured as screw elements and the first attaching means 5 configured as riveted nuts respectively form together one attaching unit for reliably clamping the door element with an appropriate clamping force between the fitting elements 3 and 4. The first attaching means 5 configured as riveted nuts include an engagement area 5.1, into which the second attaching means 6 configured as screw elements act. In this case, the engagement area 5.1 of the first attaching means 5 protrudes, respectively extends at least partially into the free space 11 formed via the locating portion 3.1 and 4.1, i.e. between the fitting elements 3 and 4. In the mounted condition of the corner fitting 1, the free space 11 is formed as a distance between the fitting elements 3 and 4. In the here illustrated condition of the inventive corner fitting 1, the engagement area 5.1 protrudes via the locating portion 3.1 and 4.1 of the fitting elements 3 and 4 beyond to the opposite fitting element 4 and 3. The engagement area 5.1 of the first attaching means 5 includes a thread 7 in the shape of an internal thread, which cooperates with a male thread configured as a counter-thread of the second attaching means 6 configured as screw element.

(8) For the purposes of illustrating the profiled exterior contour 8, the first attaching means 5 configured as a riveted nut in the front fitting element 3 is illustrated to protrude to the front from the fitting element 3. The profiled exterior contour 8 of the first attaching means 5 configured as a riveted nut is multi-edged, in the present case as a hexagon, which serves for increasing the tightening torque, respectively the torque to be applied to the attaching unit and for self-locking the first attaching means 5, when the second attaching means 6 is brought to engage in the engagement area 5.1 of the first attaching means 5. So that the first attaching means 5 configured with a multi-edge contour in particular with an exterior hexagonal contour 8 can be inserted into the receptions 9 of the fitting elements 3 and 4 and if required can be removed again, and thereby assists the reception 9 in the torsion-locking of the first attaching means 5 configured multi-edged, the geometrics of the receptions 9 for the first attaching means 5 are adapted to the profiled exterior contour 8 of the first attaching means 5, i.e. in the present case configured as a multi-edge contour, in particular as an internal hexagon contour.

(9) Both fitting elements 3 and 4 in their longitudinal extension include a recess 10, which serves for the mobile support of a holding element, which is operatively connected to a connecting element, via which the door element can be rotatably supported on an axis. Two receptions 9 are formed for the attaching means 5 and 6 at the left and right sides next to the recess 10 and almost at one height with the recess 10 in the fitting elements 3 and 4. In the illustration in the left area of the fitting elements 3 and 4 to the left upwards, three more receptions 9 are built in the fitting elements 3 and 4. Thereby, the inventive corner fitting 1 combines the most important standard glass cutouts, which are globally utilized. For preventing damage to the door element in the area of the through-hole of the attaching means 5 and 6, a sleeve 2 can be pushed or screwed at least over the second attaching means 6, which sleeve is positioned at least sectionwise over the threaded portion, i.e. the part or area of the second attaching means 6, which contacts the door element in the restraining area in the through-hole. Advantageously, the sleeve 2 is embodied from a plastic material or a rubber elastic material. It is in particular preferred, if the sleeve 2 is cut from a PVC-tube.

(10) FIG. 2 shows a door element 30, which, via an inventive corner fitting 1, is supported on a center of rotation 20, which may be for example a BTS-axis (floor door closer axis). At the lower left corner of the door element 30, the corner fitting 1 is clamped to the door element 30. The corner fitting 1 illustrated in FIG. 2 is configured such as to be clampable as well to the top left or the top right or the lower right corner of the door element 30 for supporting the door element 30 on a center of rotation 2 and/or an axis. An attaching means 5 is introduced into the reception 9, which is embodied on the right side to the recess in the fitting element 3.

(11) A restraining area 70, into which the door element 30 is insertable, is formed between the fitting elements 3 and 4. Preferably, intermediate layers 60, which are surrounded io by the locating portions 3.1 and 4.1, serve for preventing direct contact of the door element 30 with the fitting elements 3 and 4, in order to prevent for example damage to the door element 30, which is preferably a glass door element, when clamping in the fitting element 3 or 4, which is manufactured for example from grey cast iron. Moreover, the intermediate layers 60 preferably also serve for self-protecting the attaching means 5 and 6, wherein the intermediate layers 60 are at least partially elastically deformed, when the first attaching means 5 is brought into engagement with the second attaching means 6, whereby the clamping force is developed between the fitting elements 3 and 4, whereby the attaching means 5 and 6 are at least slightly pre-tensioned when being brought into engagement.

(12) A holding element 80, which is displaceable in relation to the fitting elements 3 and 4, in particular in longitudinal extension of the fitting elements 3 and 4, is disposed between the two fitting elements 3 and 4. A connecting element 90, which is operatively connected to the holding element 80, serves for supporting the door element 30 on the center of rotation 20 and/or the axis. In the present case, the connecting element 90 is non-positively and/or positively operatively connected to the holding element 80 io via two attaching elements 100.

(13) The holding element 80 in operative connection with the connecting element 90 is guided to be movable in a free space 10 configured as a recess 10 in the shape of a groove in the fitting element 3 and the fitting element 4. In this case, the recess 10 is configured in the shape of a groove parallel to the longitudinal extension of the fitting elements 3 and 4. The holding element 80 and the connecting element 90, which is in operative connection via the attaching elements 100, are thereby displaceable parallel along the recess 10, i.e. with regard to, respectively in the longitudinal extension of the fitting elements 3 and 4. As the connecting element 90 with the holding element 80 is displaceable in relation to the door element 30 in the opposite direction, the door element 30 can be infinitely variable aligned to the center of rotation 20 along the axis BB, for example in its position in a door frame or a glass door installation. In the event e.g. the center of rotation 20, respectively the axis of rotation of the door element 30, represented by the axis AA, is located outside the ranges determined for the standard centers of rotation 20, namely outside of 55 mm, 65 mm or 70 mm, the door element 30 may be adjusted to the center of rotation 20 and/or to the axis by displacing the holding element 80 and thereby with the connecting element 90, which is operatively connected to the holding element 80.

(14) In the present case, the holding element 80 and the connecting element 90 are configured as two interconnected structural components comprising an attaching mechanism, which in the present case, is incorporated in both structural components, namely in the holding element 80 and in the connecting element 90. For transferring the attaching mechanism from a released condition, in which the holding element 80 is supported to be movable in the longitudinal extension of the fitting elements 3 and 4, into a fixing condition, the attaching elements 100, which connect the holding element 80 to the connecting element 90, are screwed into the through-holes 120. When screwing the attaching elements 100 into the holding element 80, the head part 80.1 of the holding element 80 gets clamped at least sectionwise non-positively in the recess 10 configured in the shape of a groove at the fitting elements 3 and 4. Thus, in the fixing condition of the attaching mechanism, the displaceability of the holding element 80 and of the connecting element 90 operatively connected to the holding element 80 is disabled, respectively the holding element 80 is immobilized in its position at the fitting elements 3 and 4.

(15) With the intention to assist the movement of the holding element 80 and of the connecting element 90 operatively connected thereto in longitudinal extension of the fitting elements 3 and 4, a lower recess 180 is configured at the fitting elements 3 and 4, which is preferably formed parallel to the recess 10 configured as a groove and which preferably extends over the same length as a recess 10. Preferably in this case, the lower recess 18 is formed in both fitting elements 3 and 4 and preferably extends over the free space 11 formed between the fitting elements 3 and 4, from one to the other fitting element 3 and 4.