Hardware for a fully-glazed door

A fitting for an all-glass door with an upper bearing which substantially includes a fitting body with a glass receptacle and/or a clamping device for a glass leaf and with a bearing pin for engagement in a counterbearing at an overpanel or in a frame. The bearing pin is displaceable in a pocket hole. To provide a fitting that resists intrusion after the glass door is installed, the bearing pin of the fitting is secured in such a way that the glass leaf is prevented from being lifted out when the all-glass door is closed.

PRIORITY CLAIM

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention is directed to a fitting, in particular for all-glass doors, comprising an upper fitting having a fitting body with a clamping device for the glass leaf and with a bearing pin for engaging in a counterbearing at the transom or overpanel.

2. Description of the Related Art

Fittings of the type mentioned above are sufficiently well known. However, the fittings of the upper counterbearing which is supported at an overpanel above the glass leaf of the glass door are generally oriented transverse to the vertical axis of the glass door. DE 299 24 319 U1 discloses a fitting of this type for the rotatable bearing support of a door leaf at a frame construction. In this case, a fitting is arranged at the top and bottom of the door leaf, respectively, and cooperates with a complementary counter-fitting at a frame construction. The fitting is characterized in that a bearing axis extends in the plane of the door leaf and in that the fitting is fastened in a complementary recess of the door leaf. At the same time, the fitting is divided longitudinally by an intermediate space into fitting parts which are spaced apart at least partially so as to form opposite stop faces. The glass pane is fastened by screw members which engage in the fitting from one side. The upper fitting has a nonadjustable bearing pin.

DE 89 105 69.9 U1 discloses an upper bearing element which has a bearing pin that is displaceable in longitudinal direction of the door (vertical axis). This bearing pin is held by a screw that is arranged orthogonal to the bearing pin and can be adjusted in height by loosening this bearing screw. For this purpose, an elongated hole is provided in the fitting part. The bearing pin penetrates into a pocket hole so that when the door is being installed the bearing pin disappears into the pocket hole and, after installing the door, the bearing pin is pressed out of the bearing and penetrates into the counterbearing located at the overpanel. A construction of this kind facilitates mounting of the glass door.

DE 298 13 219 U1 discloses a fitting for an all-glass leaf whose bottom fitting parts are terminated by caps.

It is the object of the present invention to provide a fitting which is resistant to break-in after the glass door is installed.

SUMMARY OF THE INVENTION

This object is met by the inventive upper fitting being provided with lift-out protection by means of a fitting arrangement. The lift-out protection acts in an outwardly inconspicuous manner because it is arranged below the fitting body, or a clamping device, that is terminated by cover caps.

According to an advantageous further development, the bearing pin is fastened to the fitting body and/or to the clamping device for the all-glass leaf by at least one fastening screw. The fastening screw penetrates into or through the bearing pin orthogonal to the center axis of the bearing pin. The fastening screw is inserted into an elongated hole inside the fitting body and/or the clamping device so that the bearing pin is displaceable in direction of the vertical axis. The thread of the fastening screw penetrates into a threaded bore hole within the bearing pin. By tightening the fastening screw when the bearing pin is moved out, this bearing pin is connected to the fitting body and/or to the clamping device in a frictional and positive engagement.

Due to the fact that the bearing pin is located inside a pocket hole, it is possible to introduce another screw element below the moved out bearing pin, which other screw element likewise penetrates the fitting body and/or the clamping device orthogonal to the center axis of the bearing pin. It is not possible to disassemble the installed all-glass leaf when the door is closed because of the arrangement of the safety screw, namely, because the safety screw is arranged so as to be offset by 180° relative to the fastening screw. This can only be done when the safety screw is unscrewed or loosened on one side of the all-glass door and the fastening screw is unscrewed or loosened on the opposite side. However, this means that the fitting and/or the clamping device must be accessible from both sides of the door leaf.

If only the safety screw were removed after removing the cover on one side of the all-glass door, the bearing pin could not be lowered by reason of the design because the fastening screw holds the bearing pin in its position even when the safety screw is removed. This is due to the fact that the fastening screw, which is offset by 180° relative to the safety screw, is accessible within the space in this case. Not until the all-glass door is opened can the fastening screw also be loosened so that the bearing pin can penetrate into the fitting body and/or into the clamping device. However, this is only possible when the safety screw has been completely removed. When the safety screw is removed, the lower part of the pocket hole in which the bearing pin penetrates is released.

If, on the other hand, a person only loosens the fastening screw, the bearing bolt cannot penetrate down into the pocket hole because of the safety screw that is screwed in on the opposite side.

It is clear that such an arrangement of the safety screw and fastening screw of the bearing pin results in a simple yet effective securing of the bearing pin. Adjustability is not impaired by the safety screw when using the glass door. In this regard, it does not matter how the fitting is constructed.

Further details, features and advantages of the invention are indicated in the following description of a preferred embodiment example with reference to the drawings.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

FIG. 1shows an upper fitting that is used for all-glass doors with a glass leaf. Since the invention is only concerned with the upper area of a fitting that is constructed in different ways and since only the lift-out protection is referred to, all other parts not relevant to the invention have been omitted.

The upper fitting3substantially comprises a fitting body4which has a glass receptacle21for the glass leaf of the all-glass door. Located at the upper area of the fitting body4is a pocket hole53into which a bearing pin7of an upper bearing in an overpanel or the like penetrates, this bearing pin7being constructed so as to be displaceable. The fitting body4is bounded laterally by clamping inserts25(clamping plates). The clamping inserts25are covered by cover panels26. When the cover panels26are removed, as is illustrated inFIGS. 2 and 3, two screw elements within the upper fitting3, namely, a holding screw50and a safety screw48, are accessible. The holding screw50is fitted with its head in an elongated hole47oriented in axial direction and with its thread in an internal thread51arranged in the bearing pin7. When the bearing pin7is moved out (seeFIG. 1), the holding screw50is tightened so that a frictional positive engagement occurs between the bearings pin7and the upper fitting3.

Directly below the end of the bearing pin7which penetrates into the pocket hole53is a safety screw48orthogonal to the longitudinal axis of the fitting. The safety screw48penetrates the pocket hole53. The length of the safety screw48is adapted to the thickness of the fitting body and clamping inserts. However, the safety screw48is arranged so as to be offset by 180° relative to the holding screw50. This means that when a door leaf is closed, e.g., the safety screw48lies outside of the space and the holding screw50is located inside the space. Therefore, when a door is closed no one may simultaneously unscrew both screws, namely, the safety screw48and the holding screw50, in order to lower the bearing pin7into the pocket hole53so as to remove the door leaf from its working position.

InFIG. 2, the safety screw48which was screwed into an internal thread55of the clamping insert25has been removed. It is clear that loosening the holding screw50can cause the bearing pin7to be lowered only when the safety screw48has been removed beforehand. This is shown inFIG. 2.

FIG. 3shows the situation in which the holding screw50is removed from the bearing pin7while the inserted safety screw48is present in the thread55at the same time.

As can be seen from the embodiment example inFIGS. 1 to 3, a door is also operable compared to the cited prior art according to DE 89 105 60.9 U1 when the holding screw50is removed since the bearing pin7cannot be pushed out of the upper bearing because of the safety screw48. Due to the fact that the safety screw48is offset by 180° relative to the holding screw50when the upper fitting3is viewed from the top, the entire all-glass door is also protected from being lifted out at the same time.