The invention resides in a damping mechanism for a hinged door arranged in a door frame, with door fittings arranged in, or on, the door panel, frame fittings arranged in, or on, the door frame, a damper arrangement, which is arranged in the door fittings or the frame fittings and a damper arrangement counter piece which is mounted in the frame fittings or in the door fittings.
From the technical publication “Holztechnik” of the Europa-Lehrmittelverlag, 15th edition, 1005, pages 461-462, an insertion lock for house doors is known whose lock catcher engages into a lock metal sheet. The lock catcher, which is held by a spring in an extended position is a damper arrangement based on friction. The lock metal sheet forms with its catcher opening the counter part of the damper arrangement. When the door closes, the lock catcher hits the outer contour of the lock metal sheet. By the impulse of the impact, which is noticeable by a loud noise, the lock catcher is moved against the force of the above-mentioned spring into the insert lock. The inclined front face—it faces away from the door panel overlay—brakes the door movement by frictionally sliding along the lock sheet metal.
It is the object of the present invention to provide a damper fixture for pivot doors which begins to dampen the pivot movement of the door as soon as either a fixture part of the door contacts a fixture part of the door frame or a fixture part of the door contacts the wall supporting the door.
The object is solved by a damper arrangement which comprises a brake catcher with at least one braking surface which is supported in the door- or frame fixture and is pulled by a spring element into a rear position and is retained therein. The damper arrangement includes a damper member which is arranged between the brake catcher and the door- or frame fittings. The damper arrangement counterpart comprises at least one trigger element with an engagement flank which is directly or indirectly contacted by the brake surface upon closing of the door, in order to slow down the closing movement of the door panel by the operation of the damper member.
The damper arrangement is only activated when the damped door is almost closed already. As soon as the lock fitting of the door panel contacts the frame fitting of the door frame, the damping of the door starts. Then, the front edge of the lock fitting is spaced from the door frame seal according to
The damper arrangement, which functions generally also without the door being held closed, is installed in the exemplary embodiment in a lock box integrated into the door panel. But it may also be integrated into the fitting of the door frame. In that case, the trigger elements are arranged in, or on, the door panel.
The damper fixture damps every door closing movement which can be initiated for example by the way the door is supported. It is for example possible to provide for a slightly inclined pivot axis of the door panel. Also, the opposite front faces of the door hinges could, at least in particular areas, extend coil-like around their posts. Further, the door panel may be supported on the door frame by a lift rod which is arranged near the door pivot axis. In all three cases, the weight force of the door panel is used for closing the door. Alternatively, a floor door closer, an automatic door closer or a coil spring integrated into the door hinge in a tensioned state may be used. These variants generate a closing movement by means of a pretensioned mechanical spring.
The invention will become more readily apparent from the following description of schematically shown embodiments on the basis of the accompanying drawings.
It is shown in:
The
The lock box (40), in this case, includes the brake catcher (50), a pivot nut (103) and a chain spring (108) with a support structure (109) therefor. The brake catcher (50), which in this case is arranged in the upper area of the lock box (40), is disposed above the pivot nut (103). The pivot nut (103) is moved by way of handle (100), see
The head section (61) has near the front face (55) thereof two, for example, groove-like cut-outs (65, 66). One of the cutouts (65, 66) is open at the top side (51) and the other at the bottom side (52) of the brake catcher (50). Each cut out (65, 66) has a wall (67, 68), which extends with respect to the lock bottom side (53) at an angle of, for example, 45 angular degrees. In the embodiment according to
The head section (61) is provided at the lock bottom side (53) of the brake catcher (50) with an engagement ledge (69), see
The second section is the center section (71). It has at least in the rear area near the pivot nut (103), a cutout (72) with two partial cylindrical flanks (73, 83), see
The center section (71) further includes an elongated damper opening (74) which extends from the lock bottom side (53) to the lock cover side (54). Herein, a damper (90) and a spring element (99) are arranged. The elongated damper opening (74) has in the center area oppositely arranged grooves (75) which are facing each other and in which a support plate (85) is accommodated for supporting the damper (90) among others. Transversely to the elongated damper opening (74), there is in the center section (71) an elongated cam opening (76), which connects the elongated damper opening (74) to the catcher bottom side (52). The pivot nut (103) has a cam (104) which extends into that elongated cam opening (76), see
Between the elongated cam opening (76) and the head section (61), there is in the center section (71) disposed on the lock bottom side (53), a dead end bore (78) in which a coil compression spring (86) is supported forming an engagement spring (86). The engagement spring (86) which is supported on the lock bottom wall (41) biases the brake catcher (50) against the edge of the catcher opening (25), see
The foot section (81) has formed in the lock cover side (54), near the rear flank (83), a dead end bore (84). The latter supports a coil compression spring (87) forming a rear engagement spring, see
In place of the coil compression springs (86, 87) also flat leaf springs may be used which, depending on their installation position, slide along the lock bottom (41), the lock cover (42) or the brake catcher (50).
In the lock box (40), which is for example a rectangular thin-walled metal sheet container, the brake catcher (50) is longitudinally movably supported. The extended brake catcher (50), see
In
Spatially below the cutout (72) of the brake catcher (50), the pivot nut (103) is disposed in a bore (48) of the lock bottom wall (41). In the pivot nut (103), see
By way of the cover plate (31), that is, the front wall of the lock box (40), the lock box (40) is inserted into a cavity (13) in the door panel (10) and fixed, see
In
The cutout (115) comprises primarily two parallel narrow grooves (116, 117). Both grooves extend at an angle of 45° with respect to the front surface (113) of the angled metal closing sheet (111). The groove flanks of the wider and longer groove (116) extend for example parallel to the front face (55) of the brake catcher (50). The web disposed between the two grooves (116, 117) is cut in the center area thereof so that in the upper and lower area of the cutout (115) two tongue-like trigger elements (121, 122) remain. The groove (117) is further provided at the catcher side with a cutout (118) of triangular cross-section, see
The simplified frame fitting (24) according to
The
Below the spring elements (9), a gas or hydraulic damper (90) is arranged. The damper (90) however, may also be based on a mechanical operating principle. The cylinder (91) of the damper (90) is connected to the brake catcher 950) whereas the piston (92) or, respectively, the piston rod (94) is linked to the lock box (40). The brake web (63) projects from the lock box (40) just far enough that the brake surface (68) of the brake catcher (50) overlaps the engagement flank (123) of the frame fixture (24) for example by 0.5-3 mm.
As soon as the closing door (1) comes into contact with the engagement flank (123) via the brake surface (68), the brake surface (68) slides along the engagement flank (123) while pulling out the brake catcher (50). The pulling out movement is damped by extension of the damper piston (92). At the same time, the tension spring (99) is tensioned. When the door is closed, the brake web (63) projects into the cutout (115).
In the damper fixture, the direction (9) of the door closing movement is redirected by the combination of the brake web (63, 64) or, respectively, the hook section (59), see
Since, with a pivot movement, the door (1) approaches the frame fixture (24), the brake surfaces contact the engagement flanks not in an areal way. Generally, the individual brake surface (69) slides along the front edge of the engagement flank (123) and comes in full contact with the engagement flank (123) only in the end phase of the closing movement.
In order to avoid an abrasive contact with the engagement edge, the engagement flank may be curved, see
the brake surface (68) abuts the engagement flank (123) tangentially over the whole slide area.
The formulas are valid only for a positive displacement (V), which is generally always ensured, since the door pivot axis (2) is normally arranged at the level of the overlay. Such a design of an engagement flank curvature reduces the annoying contact noise occurring between the fittings (14) and (24). In addition, it reduces the wear between the contact surfaces because the surface pressure is substantially reduced there.
In the simplified variants of the
In this connection,
As shown in
When now, upon closing of the door, the lock box, which is disposed in the door panel, moves, with the brake catcher (50) retracted, in the direction (9) toward the angled metal closing sheet (111) and the catcher element (112) of the door frame (20), as shown in
In order to again open the door, the handle (100) must be operated by pushing it downwardly. Upon operating the handle (100), the pivot nut cam (104) is pivoted clockwise in the elongated cam opening (76), see
In accordance with
The
Furthermore, in the frame fixture (24) a roller (124) is roatatably supported by a shaft (125) in the area of the engagement flank (123). The shaft (125) is so positioned in the fixture (24) that, for example, the cylindrical radially outer surface (126) projects a few tenths of a millimeter over the engagement flank (123). As a result, the brake surface (68) can at least in some areas roll off on the roller (124). In place of the roller (124), the rolling body used may also be in the form of a drum or an ellipsoid frustum. Also, the shape of the hook section (59) in combination with the support structure for, and the size of, the roller (124) or drum may be so designed that the brake surface (68) and/or (67) rolls off during the whole damper movement. Possibly the rolling body (124) may alternatively also be arranged in the hook section (59) so that it rolls on the engagement flank (123) of the frame fixture (24).
It is of course also possible to combine the variants of
Number | Date | Country | Kind |
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10 2006 002 951 | Jan 2006 | DE | national |
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Number | Date | Country | |
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20090031528 A1 | Feb 2009 | US |