DE102023117406A1 - Door leaf with flush door fitting and handle lift and installation method - Google Patents

Abstract

The invention relates to a door leaf (10) with a flush-fitting door fitting (16) for interacting with a handle set (14), wherein a substructure (32, 32a, 32b) for rotatably supporting an insertion end (40) of a door handle (42, 42, 42b) of the handle set (14) is recessed under a cover (34) in a door leaf (18). In order to enable more convenient operation even when using different door handles (42, 42a, 42b) available on the market, possibly also with a locking mechanism (28) on the door handle (42a), it is proposed that the substructure be supported in the door leaf (18) in a form-fitting manner to prevent twisting and that it has a spring element (106), in particular for holding the handle up, for applying a restoring force to the door handle (42b).

Description

The invention relates to a door leaf with a flush-mounted door fitting for interaction with a door handle. The invention also relates to an assembly method for a recessed, in particular flush-mounted, door fitting in a door leaf.

• [1] DE 20 2005 016 217 U1
• [2] DE 10 2007 000 908 B3
• [3] Katalog „Zimmertüren“ der Hörmann KG Verkaufsgesellschaft, mit dem Druckvermerk „Stand 07.2020 / Druck 07.2020 / HF 86734 de / P.xxx www.hoermann.com“, heruntergeladen aus dem Internet am 21.12.2020
• [4] EP 2 754 790 A1
• [5] DE 10 2018 100 360 A1
• [6] EP 4 019 716 A1
• [7] EP 2 284 335 A2
• [8] DE 39 31 472 A1
• [9] DE 20 2017 004 533 U1
• [10] DE 20 2013 011 573 U1
• [11] DE 20 2007 030 655 A1
• [12] EP 3 067 491 B1
• [13] GB 2 123 070 A
• [14] DE 10 2018 129 450 A1

For the technological background, please refer to the following literature:

• [1] DE 20 2005 016 217 U1
• [2] DE 10 2007 000 908 B3
• [3] Catalogue “Interior doors” of the Hörmann KG sales company, with the printing note “Status 07.2020 / Print 07.2020 / HF 86734 de / P.xxx www.hoermann.com”, downloaded from the Internet on 21.12.2020
• [4] EP 2 754 790 A1
• [5] DE 10 2018 100 360 A1
• [6] EP 4 019 716 A1
• [7] EP 2 284 335 A2
• [8] DE 39 31 472 A1
• [9] DE 20 2017 004 533 U1
• [10] DE 20 2013 011 573 U1
• [11] DE 20 2007 030 655 A1
• [12] EP 3 067 491 B1
• [13] GB 2 123 070 A
• [14] DE 10 2018 129 450 A1

From the literature reference [1], a door leaf with a flush handle fitting is known, in which the door fitting has a rosette disc for supporting the door handle. An additional cover can be provided. In order for the handle to be rotatably mounted on the rosette disc, the handle neck of the handle must be designed with a groove that grips an inner edge of the disc. This means that only special door fittings with a special door handle can be used, the manufacture of the door handle is complex, and subsequent depth adjustment is not possible.

Therefore, in order to improve a door leaf with flush handle fittings, it has been proposed in the literature reference [2] to provide a continuously milled handle recess through which a lock inserted into the door leaf passes. A substructure for supporting the door leaf rests on the lock. A conventional door handle of a conventional handle set can be pivotally mounted on the substructure. Such door handles have a handle body with a larger diameter on the handle neck and an insertion end extending from the handle body with a uniformly smaller diameter, which is inserted into a cylindrical through-opening in the substructure and can be moved axially there until the handle set is axially fixed by screwing the two door handles onto the handle shaft, which is usually designed as a square, accommodating the door leaf between them. Distances between the door handles and the substructure are compensated with spacer discs. Different spacer discs are provided to accommodate different door leaf thicknesses.

The reference [3] shows examples of different doors with door leaves in different designs and with different door leaf thicknesses, which can also be used in embodiments of the invention.

References [4] and [5] disclose a base plate as a substructure and bearing arrangement for a door handle and a rosette arrangement as part of a handle set, as well as a method for assembly. A handle set comprises a substructure and a cover on each of the broad sides of a door leaf. The substructure rests on a step of the door leaf body and is screwed to the opposite substructure using screws. The cover is attached to the substructure using magnets or locking elements.

The reference [6] shows a door leaf with flush door fittings for the handle operation as well as an assembly method for this, which allows greater design options and simpler construction and assembly with a high quality impression. For this purpose, a substructure is mounted in a floating manner.

The reference [7] discloses a bearing arrangement for a door handle and a rosette arrangement as part of a handle set, as well as a method for assembly. A rosette arrangement comprises a substructure and a cover on each of the broad sides of a door leaf. The substructure rests on a step of the door leaf body and is screwed to the opposite substructure using screws. The cover is attached to the substructure using clamps and rests with its edge on the broad side.

The invention has the task of providing a door leaf with flush door fitting to work together with a door handle that is more convenient to use.

To solve this problem, the invention provides a door leaf according to claim 1.

Advantageous embodiments are the subject of the subclaims.

The invention provides a door leaf with a door leaf with a door leaf body and an actuating mechanism, which has a handle set that interacts with a door fitting, wherein the door fitting has a substructure for pivotally mounting the handle set and a cover for covering the substructure, wherein the handle set has a door handle that has a handle area and a neck area, wherein the neck area comprises an insertion end, wherein the substructure has a through-opening into which the insertion end can be inserted and rotatably mounted therein, wherein a lock case recess is provided in the door leaf body for receiving a lock that can be actuated by the door handle and at least one handle recess that is at least partially continuous between at least one of the broad sides of the door leaf and the lock case recess, wherein the substructure of the door fitting is received in the handle recess so that the door fitting is flush with a surrounding surface, wherein the substructure is positively secured against rotation in the handle recess, and wherein the substructure has a spring element which exerts a restoring force on the door handle.

It is preferred that the substructure has a substructure body which is positively received in the handle recess so as to be secured against twisting and to which the spring element is fastened.

It is preferred that the substructure body has a recess on the rear side facing the lock, in which recess the spring element is at least partially received.

It is preferred that the substructure body has at least one spring stop which extends radially at least with a directional component and against which the spring element strikes.

It is preferred that the substructure body has at least one radial projection as a spring stop and/or stop for limiting the handle movement.

It is preferred that the substructure body is designed as a plate body, wherein an outer contour of the plate body, seen in plan view, is non-circular, angular, quadrangular, square, rectangular or in the form of another polygon or is symmetrical with respect to at least one central plane, wherein a radially inwardly directed boundary wall of the handle recess is designed to be complementary to the outer contour of the substructure body.

It is preferred that the spring element is designed as a spring with at least one winding extending around the through-opening and a first force introduction region which is fixed to the substructure and a second force introduction region which is fixed directly or indirectly to the neck region.

It is preferred that the spring element engages in a spring receiving opening on the neck region.

It is preferred that the spring element engages a sleeve which is rotatable in the substructure and into which the neck region is inserted and which is designed with a non-circular opening for the rotationally fixed, positive-locking reception of a handle shaft of the handle set.

It is preferred that the substructure has a stop ring which is connected in a rotationally fixed manner to the neck region and limits an axial movement of the spring element and a rotational movement of the door handle.

It is preferred that the substructure has a cover on a rear side facing the lock for axial positioning of the spring element.

It is preferred that the substructure is attached exclusively by form-fitting to its outer contour and by being enclosed between a step on the handle recess and the cover.

It is preferred that the substructure is attached exclusively by form-fitting to its outer contour, by edging between a step on the handle recess and the cover and by an adhesive connection.

It is preferred that the handle set has one or two door handles which are mounted in associated substructures, and that a locking mechanism is provided which enables a lockable door handle of the handle set to be rotated relative to the substructure mounting this lockable door handle in the Locking position prevented and unlocking position enabled.

It is preferred that the locking mechanism has a locking element that is movable axially to its axis of rotation on a neck region of the lockable door handle and a counter bearing for the locking element on the substructure that pivotally supports the lockable door handle.

It is preferred that the counter bearing has a radial recess in the through opening.

It is preferred that the radial recess is arranged on the lock side of the substructure.

It is preferred that a first and a second radial recess are formed on two opposite sides of the through opening.

It is preferred that an actuating element for actuating the movement of the locking element is provided on the lockable door handle.

It is preferred that the actuating element projects displaceably from the neck region of the lockable door handle.

It is preferred that the actuating element is arranged on the side of the neck region facing away from the handle region.

• Vorsehen einer Unterkonstruktion zur Drehlagerung der Drückergarnitur und einer Abdeckung zum Abdecken der Unterkonstruktion, wobei die Unterkonstruktion eine bereichsweise zylinderförmige Durchgangsöffnung zum Einstecken und drehbaren Lagern des Einsteckendes aufweist, wobei die Unterkonstruktion eine unrunde Außenkontur aufweist und ein Federelement aufweist,
• Vorsehen einer Schlosskastenausnehmung zur Aufnahme eines Schlosses und wenigstens einer zumindest bereichsweise durchgehenden Drückerausnehmung zwischen wenigstens einer der beiden Breitseiten des Türblattes und der Schlosskastenausnehmung in dem Türblattkörper derart, dass in der Drückerausnehmung die Unterkonstruktion und der Türbeschlag derart aufnehmbar sind, dass der Türbeschlag bündig zu einer umgebenden Oberfläche des Türblatts abschließt und sich die Unterkonstruktion auf einer an dem Türblattkörper zwischen der Schlosskastenausnehmung und einem Abstützbereich der Unterkonstruktion ausgebildeten Stufe abstützen kann und mit der unrunden Außenkontur formschlüssig gegen Verdrehen gesichert ist, schwimmendes Montieren der Unterkonstruktion in der Drückerausnehmung und Fixieren der Unterkonstruktion durch die bündig eingesetzte Abdeckung oder durch die bündig eingesetzte Abdeckung und einen Kleber, und Einsetzen des Türdrückers in die Durchgangsöffnung und Verbinden mit dem Federelement derart, dass dieses eine Rückstellkraft auf den Türdrücker zum Zurückführen in eine Normalstellung ausübt.

According to a further aspect, the invention provides a method for mounting a door fitting for cooperation with a handle set comprising a door handle, the door handle comprising a neck region with a larger diameter and an insertion end extending from the neck region with a smaller diameter, on a door leaf having a door leaf body, the method comprising the steps of:

• Providing a substructure for pivoting the handle set and a cover for covering the substructure, wherein the substructure has a partially cylindrical through-opening for inserting and pivoting the insertion end, wherein the substructure has a non-circular outer contour and has a spring element,
• Providing a lock case recess for receiving a lock and at least one handle recess that is at least partially continuous between at least one of the two broad sides of the door leaf and the lock case recess in the door leaf body such that the substructure and the door fitting can be received in the handle recess such that the door fitting is flush with a surrounding surface of the door leaf and the substructure can be supported on a step formed on the door leaf body between the lock case recess and a support area of the substructure and is positively secured against twisting with the non-circular outer contour, floating mounting of the substructure in the handle recess and fixing the substructure by the flush-fitted cover or by the flush-fitted cover and an adhesive, and inserting the door handle into the through opening and connecting it to the spring element such that this exerts a restoring force on the door handle to return it to a normal position.

Preferred embodiments of the invention relate to a door with flush handle rosettes (example for cover) and handle lift.

Preferred embodiments of the invention relate to an integrated handle lift, which improves the ease of use, but can also be combined with locks that do not have a suitable handle lift themselves.

Until now, flush-mounted door fittings could not be combined with certain types of locking mechanisms in the handle, as these require the handle to be held up. With developments of the invention, these could now be used.

Door handles or handle sets are often supplied by handle manufacturers as suppliers to door manufacturers. Some handle manufacturers have various locking mechanisms that are integrated into the door handle itself. Some of these locking mechanisms require a handle lift mechanism, i.e. a spring element that holds the door handle in its normal position (usually with the handle horizontal) and returns it after it has been operated.

Some embodiments use a handle holding mechanism in a substructure that is recessed into the door leaf and is secured there with a form-locking mechanism to prevent it from twisting. Such substructures with a form-locking mechanism are described in the earlier, unpublished German patent application 10 2022 107 184.7 described, however, for the purpose of locking, not for holding the handle up. For further details on possible embodiments, reference is made to this earlier patent application.

In some preferred embodiments, the substructure is partially cut out on the inside at the back. The aim is to attach a spring to a small part of the substructure that is left standing at the back.

In some designs, this small, remaining part also serves as a stop for a stop ring, which, due to its design, ensures that the pusher movement can only take place between two outer tabs of the stop ring.

In some versions, the DIN direction of the handle (DIN right or DIN left) can be set at the factory by turning the spring and the stop ring.

In some designs, the spring is connected to the handle via the inner spring end and the stop ring via inner extensions. During on-site installation of the handle, both are inserted into a spring receiving opening, e.g. formed as a groove in the handle neck.

In contrast to standard rosettes, where the handle can be pre-assembled with a spring ring on the back, the handle cannot be assembled with a spring ring in some embodiments of the invention due to the assembly sequence. For this reason, in some embodiments, a cover is placed on the back of the flush-mounted substructure with handle support before the substructure is assembled into the door. This cover can be screwed, clipped or glued. If the handle neck is long enough, the cover can also serve as an additional handle neck guide.

The spring and stop ring are precisely positioned in the substructure thanks to the rear cover, the hooking of the spring, the grooves in the handle neck and the limitation of the rear, inner recess.

Due to the low height of the substructure, this design can also be used for the rebate side of rebated doors.

In other embodiments of the invention, the substructure is also partially recessed on the inside at the back. Here, a spring is also used, which strikes a stop in the substructure. The counter-bearing of the spring is a rotating part, for example a plastic part with a square hole, which receives the handle shaft, usually designed as a handle square, in a form-fitting manner. The rotating part, in particular the plastic part, is held in position in the substructure by means of a form-fitting connection, gluing or a cover, similar to that described above.

This creates an indirect connection to the handle. One advantage of this design is that no spring receiving opening, such as grooves, is required in the handle neck.

Depending on the length of the handle neck, the substructure in these designs can be thicker, which can limit the area of application.

In some embodiments, only one of the substructures on the two sides can be provided with the spring element, or both substructures on both sides can be provided with a spring element each.

In some embodiments, a spring element in at least one of the substructures is combined with a locking mechanism for directly locking the door handle in at least one of the substructures. In some embodiments, the spring element for holding the handle up and the locking mechanism can be provided on the same side of the door leaf, on the same substructure. In other embodiments, one of the substructures is provided with the spring element on one side and thus ensures that the handle is held up, and the substructure on the other side, which can be equipped with or without a spring element, is designed as a counter bearing for a torsion-proof direct locking of the door handle inserted therein.

Embodiments with locking relate in particular to a door leaf with a door leaf body and an actuating mechanism which has a handle set which interacts with a door fitting. The door fitting has a substructure for pivotally mounting the handle set and a cover for covering the substructure. The handle set has a door handle which has a handle area and a neck area, the neck area comprising an insertion end. The substructure has a through-opening into which the insertion end can be inserted and rotatably mounted therein. In the door leaf body, a lock case recess is provided for receiving a lock which can be actuated by the door handle and at least one handle recess which is at least partially continuous between at least one of the broad sides of the door leaf and the lock case recess, in which the substructure of the door fitting is received, so that the door fitting flush with a surrounding surface. The substructure is secured against twisting and is floating in the handle recess. In one alternative, the substructure is attached exclusively by a form-fit to its outer contour and by edging between a step on the handle recess and the cover. In another alternative, the substructure is attached exclusively by a torsion-resistant form-fit to its outer contour, by edging between a step on the handle recess and the cover and by an adhesive connection. A locking mechanism is also provided which prevents the door handle from twisting relative to the substructure in the locked position and enables it in the unlocked position.

At least one of the form-fitting substructures is preferably provided with the spring element.

This makes fastening and assembling the substructure very easy. No screw connections need to be made. The handle recess is also very easy to create; simply milling out a recess that complements the outer contour of the substructure is sufficient; no additional holes for screws or the like are required. Nevertheless, a very high-quality flush appearance can be achieved.

The locking mechanism allows a very simple and visually high-quality solution to be created for one-sided locking, for example for bathroom or toilet doors. The lock can be very simple, with just a latch and no additional bolt. The door leaf does not need an additional keyhole for the handle set. This allows a very clear appearance to be achieved.

It is preferred that the locking mechanism has a locking element on the neck area that is axially movable to its axis of rotation and a counter bearing for the locking element on the substructure.

It is preferred that the counter bearing has a radial recess in the through opening.

It is preferred that the radial recess is arranged on the lock side of the substructure, i.e. on the side facing a lock counter bearing when the door leaf is closed.

It is preferred that a first and a second radial recess are formed on two opposite sides of the through opening.

With the solutions mentioned above, it is easy to create a right/left design using the same parts, so that the door fitting and the handle set are suitable for both right-hinged and left-hinged doors.

It is preferred that an actuating element for actuating the movement of the locking element is provided on the door handle to be locked.

It is preferred that the actuating element projects slidably from the neck region.

It is preferred that the actuating element is arranged on the side of the neck area facing away from the handle area. This has the advantage that the actuating element can be easily operated with the thumb when gripping, and the door handle can be used for both right-hinged and left-hinged doors.

It is preferred that the substructure is designed as a plate body, wherein an outer contour of the plate body, seen in plan view, is non-circular, angular, quadrangular, square, rectangular or in the form of another polygon or with, wherein a radially inwardly directed wall of the handle recess is designed complementary to the outer contour of the substructure.

• Vorsehen einer Unterkonstruktion zur Drehlagerung der Drückergarnitur und zum Schaffen eines Gegenlagers für das Riegelelement und einer Abdeckung zum Abdecken der Unterkonstruktion, wobei die Unterkonstruktion eine bereichsweise zylinderförmige Durchgangsöffnung zum lösbaren Einstecken und drehbaren Lagern des Einsteckendes aufweist, die eine radiale Ausnehmung in Form einer sich axial erstreckenden Nut als Gegenlager für das Riegelelement aufweist, wobei die Unterkonstruktion eine unrunde Außenkontur aufweist,
• Vorsehen einer Schlosskastenausnehmung zur Aufnahme eines Schlosses und wenigstens einer zumindest bereichsweise durchgehenden Drückerausnehmung zwischen wenigstens einer der beiden Breitseiten des Türblattes und der Schlosskastenausnehmung in dem Türblattkörper derart, dass in der Drückerausnehmung die Unterkonstruktion und der Türbeschlag derart aufnehmbar sind, dass der Türbeschlag bündig zu einer umgebenden Oberfläche des Türblatts abschließt und sich die Unterkonstruktion auf einer an dem Türblattkörper zwischen der Schlosskastenausnehmung und einem Abstützbereich der Unterkonstruktion ausgebildeten Stufe abstützen kann und mit der unrunden Außenkontur formschlüssig gegen Verdrehen gesichert ist, schwimmendes Montieren der Unterkonstruktion in der Drückerausnehmung und Fixieren der Unterkonstruktion durch die bündig eingesetzte Abdeckung oder durch die bündig eingesetzte Abdeckung und einen Kleber, vorzugsweise lösbaren Kleber, mehr bevorzugt Schmelzkleber.

Embodiments provided with a locking device can be mounted on a door leaf having a door leaf body by a method for mounting the door fitting for cooperation with a handle set which has a door handle with a locking element for fixing the door handle in rotation, the door handle comprising a neck region with a larger diameter and an insertion end extending from the neck region with a smaller diameter, the method comprising the steps of:

• Providing a substructure for pivotally supporting the handle set and for creating a counter bearing for the locking element and a cover for covering the substructure, wherein the substructure has a partially cylindrical through-opening for detachable insertion and rotatable mounting of the insertion end, which has a radial recess in the form of an axially extending groove as a counter bearing for the locking element, wherein the substructure has a non-circular outer contour,
• Providing a lock case recess for receiving a lock and at least one handle recess which is at least partially continuous between at least one of the two broad sides of the door leaf and the lock case recess in the door leaf body such that the substructure and the door fitting can be received in the handle recess such that the door fitting is flush with a surrounding surface of the door leaf and the substructure can be supported on a step formed on the door leaf body between the lock case recess and a support region of the substructure and is positively secured against twisting with the non-circular outer contour, floating mounting of the substructure in the handle recess and fixing of the substructure by the flush-fitted cover or by the flush-fitted cover and an adhesive, preferably removable adhesive, more preferably hot melt adhesive.

Here too, at least one of the substructures is provided with the handle lift.

It is preferred that the handle recess has a first region of smaller diameter located further inside and a second region of larger diameter located further outside, in which at least the support region of the substructure is accommodated.

It is preferred that the substructure is supported on a step flank at a transition between the first region and the second region.

It is preferred that the substructure has a substructure body in which the cylindrical through-opening is arranged and a flange extending radially outward from the substructure body as a support region with which the substructure is supported on the step.

It is preferred that the handle rests directly on a contact surface of the substructure so that the substructure acts directly as a depth limiter for the handle.

It is preferred that the substructure for forming the contact surface has a projection which fits precisely through an opening in the cover.

It is preferred that the cover is supported on the substructure and/or a second step of the handle recess.

It is preferred that the handle recess has a third region arranged between the broad side and the second region with a larger diameter than the second region, wherein the cover and/or the flange of the substructure rests on a second step flank at the transition between the second region and the third region.

It is preferred that the cover is fixed in the handle recess with a hot melt adhesive.

It is preferred that an area between the cover and the step and/or substructure is filled with hot melt adhesive.

It is preferred that a locking recess for receiving a locking element is formed in the door leaf body, which is also provided with a step for supporting the cover or a further cover of the door fitting.

It is preferred that the at least one cover is designed as a rosette.

Alternatively, a door sign or similar may be provided.

It is preferred that the at least one cover is designed as a disc.

It is preferred that the at least one cover is made of metal, HPL or plastic.

It is preferred that the door leaf body is made of machinable material, at least in the area surrounding the actuating mechanism, and that the handle recess is milled out of the door leaf body. In particular, the door leaf body is made of a material based on wood materials, such as solid wood, laminated wood, chipboard, MDF, HDF and/or plywood, optionally surface-coated, such as with veneers and/or plastic.

It is preferred that a first and a second handle recess, each formed with the step for supporting the substructure, are formed between the lock case and the respective broad side of the door leaf. In particular, the outer areas of the handle recesses are formed as a mirror image with respect to a central plane through the door leaf. The lock case recess The position may be offset to one or the other broad side with respect to the median plane.

It is preferred that the door leaf is designed as a hinged leaf for a hinged door.

It is preferred that the door leaf body is made of wood materials.

It is preferred that the door leaf body is designed in the form of a plate or as a frame for a door leaf filling. The door leaf body can be designed as a closed plate or with a window cutout.

In the following, some advantages of particularly preferred embodiments of the invention are explained.

The substructure is designed in such a way that it no longer has to be supported on the lock, but on the door material itself.

Tolerances in the lock case thickness preferably have no effect and the lock can be replaced without problems.

The substructure acts as a depth limiter and contact surface for the actual handle, so that the previous compensation disc can be omitted.

The cover, designed as a rosette, for example, can be made of metal, but also of an HPL or a plastic panel.

Possible design requests or desired contrasting surfaces for the handle or door surface can be implemented quickly and easily.

In a preferred design, the substructure rests on the outer area of the handle hole milling. This means that the manufacturing tolerances of the lock, the lock position and the milling of the substructure can be easily accommodated.

In preferred designs, a floating installation of the substructure in the handle hole milling is provided.

According to an alternative, in conjunction with the flush cover, in particular a rosette, and a ring protruding in the direction of the handle on the substructure for the handle, the two parts can be centered and fixed precisely over the lock nut, e.g. with hot melt adhesive. According to an alternative, the cover, in particular in the form of a rosette disc, acts as an assembly or fixing model for the substructure.

For this purpose, it is preferably provided that an outer region of the handle recess with the largest diameter, in particular an outer milling for the cover or rosette, is designed to be precisely aligned with the lock nut.

Preferably, hot melt adhesive fills the cavity under the rosette and fastens not only the rosette but also the substructure at the same time.

The substructure, preferably in conjunction with the hot melt adhesive, acts as a depth limitation when mounting the cover, especially the rosette.

In combination with increased heat, the hot melt adhesive can be softened and the cover/rosette can be replaced if necessary.

In conjunction with a suitable substructure, an LED board can be placed under the cover/rosette. This allows the outer edge of the cover, especially the rosette, to be illuminated. The size of the cover (especially the rosette) is preferably not changed, so that the standard covers manufactured in large series, such as existing rosettes, can be used. To create a passage of light, the outer milling diameter is preferably slightly increased compared to other door leaves without lighting.

In some embodiments, door leaves and handle fittings as described in the German patent application DE 10 2020 134 924.6 described and shown, combined with handle sets (including door handles with shaft) as described in the DE 10 2018 129 450 A1 described and shown.

Some designs concern door leaves with a flush rosette and a door locking mechanism in the handle.

Some embodiments essentially allow the door to be locked in the handle, which is achieved by blocking the handle on the rosette by means of a sliding lever.

In order to lock the door at the door handle by securing it to the rosette to prevent it from twisting, a stable and well-secured rosette construction is required. By implementing the invention, this can be achieved with flush-fitting rosettes and thus with a high-quality appearance.

In contrast to the statements in the German patent application DE 10 2020 134 924.6 the substructure is adapted to achieve a return of the door handle

In some designs, this is combined with a locking of the door in the handle.

According to some embodiments, a recess is provided on the inner radius of the substructure, which is adapted to a locking element provided on the door handle so that it can move and serves as a counter bearing for this. The locking element is guided so that it can move in the axial direction, in particular on the neck area, and in the locking position its protruding end engages in the recess.

Furthermore, a substructure which is different from the statements in the German patent application DE 10 2020 134 924.6 The modified external shape creates a positive connection between the substructure and the door leaf. This positive connection ensures that the handle is permanently blocked when locked, should the handle be operated in the locked state.

In some designs, the recess on the substructure is designed to the side of the lock side of the door, so that with a modified handle design with a lateral sliding lever, it is possible to use the handle design on both the right and left.

An additional adjustment at the bottom, similar to the upper version, also allows left-right usability.

• 1 eine Draufsicht auf eine Drehflügeltür mit einem Türflügel gemäß einer Ausführungsform der Erfindung;
• 2 eine Explosionsdarstellung im Schnitt gemäß Linie A-B von 1 auf eine Türdrückeranordnung des Türflügels von 1 gemäß einer ersten beispielhaften Ausführungsform der Erfindung, wobei die Türdrückeranordnung eine Drückergarnitur mit wenigstens einen Türdrücker und einen bündig anzuordnenden Türbeschlag zum Zusammenwirken mit dem Türdrücker aufweist, wobei der Türbeschlag wenigstens eine Unterkonstruktion zur Drehlagerung des Türdrückers und eine als flache Scheibe ausgebildete Abdeckung, z.B. in Form einer Rosette, aufweist;
• 3 einen Schnitt entlang der Linie A-B von 1 eines Türblattkörpers zum Bilden des Türflügels gemäß einer der Ausführungsform von 2;
• 4 eine Ansicht wie in 3, wobei an dem Türblattkörper von 3 der Türbeschlag zum Zusammenwirken mit dem Türdrücker bündig angeordnet ist;
• 5 eine perspektivische Ansicht eines Halsbereichs des Türdrückers, wie er in der 2 links dargestellt ist;
• 6 eine Seitenansicht eines Unterkonstruktionskörpers der Unterkonstruktion gemäß einer ersten Ausführungsform;
• 7 eine Rückansicht des Unterkonstruktionskörpers von 6, von rechts in 6 gesehen;
• 8 eine Vorderansicht des Unterkonstruktionskörpers von 6, von links in 6 gesehen;
• 9 eine Seitenansicht eines Federelements der Unterkonstruktion von 2;
• 10 eine Draufsicht des Federelements von 9;
• 11 eine Seitenansicht eines Anschlagrings der Unterkonstruktion von 2;
• 12 eine Draufsicht auf den Anschlagring von 11;
• 13 eine Seitenansicht eines rückseitigen Deckels der Unterkonstruktion von 2;
• 14 eine Draufsicht auf den Deckel von 13;
• 15 eine schematische Seitenansicht der Unterkonstruktion gemäß einer zweiten Ausführungsform;
• 16 eine schematische Draufsicht der Unterkonstruktion von 15;
• 17 eine Vorderansicht eines drehbaren Einsetzteils der Unterkonstruktion der 15 und 16 gemäß einem Ausführungsbeispiels;
• 18 eine Rückansicht des Einsetzteils von 17;
• 19 eine Darstellung wie in 2 mit einer Ausführungsvariante des Türbeschlags und der Drückergarnitur; und
• 20 eine Vorderansicht des in 20 rechts dargestellten, als Gegenlager für eine Verriegelung dienenden Unterkonstruktionskörper.

Embodiments of the invention are explained in more detail below with reference to the accompanying drawings, in which:

• 1 a plan view of a swing door with a door leaf according to an embodiment of the invention;
• 2 an exploded view in section along line AB of 1 to a door handle arrangement of the door leaf of 1 according to a first exemplary embodiment of the invention, wherein the door handle arrangement comprises a handle set with at least one door handle and a flush-mounted door fitting for interacting with the door handle, wherein the door fitting comprises at least one substructure for pivotally mounting the door handle and a cover designed as a flat disk, e.g. in the form of a rosette;
• 3 a section along the line AB from 1 a door leaf body for forming the door leaf according to one of the embodiments of 2 ;
• 4 a view like in 3 , whereby on the door leaf body of 3 the door fitting is arranged flush to interact with the door handle;
• 5 a perspective view of a neck area of the door handle as shown in the 2 shown on the left;
• 6 a side view of a substructure body of the substructure according to a first embodiment;
• 7 a rear view of the substructure body of 6 , from the right in 6 seen;
• 8 a front view of the substructure body of 6 , from left to 6 seen;
• 9 a side view of a spring element of the substructure of 2 ;
• 10 a top view of the spring element of 9 ;
• 11 a side view of a stop ring of the substructure of 2 ;
• 12 a top view of the stop ring of 11 ;
• 13 a side view of a rear cover of the substructure of 2 ;
• 14 a top view of the lid of 13 ;
• 15 a schematic side view of the substructure according to a second embodiment;
• 16 a schematic plan view of the substructure of 15 ;
• 17 a front view of a rotating insert part of the substructure of the 15 and 16 according to an embodiment;
• 18 a rear view of the insert part of 17 ;
• 19 a representation as in 2 with a variant of the door fitting and the handle set; and
• 20 a front view of the 20 The substructure body shown on the right serves as a counter bearing for a locking mechanism.

The exemplary embodiments explained below relate to a device which is used, for example, in 1 illustrated door leaf 10 with a door leaf 18 and an actuating mechanism 12 for actuating the door leaf 10, wherein the actuating mechanism 12 has at least one handle set 14 and a door fitting 16 which is arranged flush on a door leaf 18 of the door wing 10. The door fitting 16 also has a handle holding device 124 with a spring element 126 which exerts an elastic restoring force on at least one door handle 42, 42a, 42b of the handle set 14.

According to a study published in the 19 to 20 In the embodiment shown, the actuating mechanism 12 has an optional locking mechanism 28 associated with the handle set 14.

The door having the door leaf 10 can be designed in different ways. For example, folding doors and sliding doors are possible. 1 shows, as a preferred embodiment of a door provided with the door leaf 10, a hinged door 20 with a frame 22, to which the door leaf 10 is pivotally connected by means of door hinges 24 about a lateral vertical axis.

In the embodiments shown, the actuating mechanism 12 has only one door handle arrangement 26.

At the 19 and 20 In the variant shown, the locking mechanism 28 is assigned to the door handle arrangement 26 in order to block the rotatability of the door handle 42, 42a in the locked state.

The door handle arrangement 26 has the door fitting 16 designed as a handle fitting for pivotally supporting door handles 42, 42a, 42b of the handle set 14, the handle set 14 and a catch (not shown) that can be actuated by the handle set 14 on a lock 30. In the embodiments shown, the lock 30 is only equipped with the catch without a bolt.

In designs not shown, the actuating mechanism 12 has an additional locking mechanism for locking the door in addition to the door handle arrangement 26. For this purpose, the actuating mechanism 12 can be provided with a conventional lock with a bolt. The lock can be designed as a warded lock or profile cylinder lock that can be operated with a warded key.

As is well known, the lock 30 has a catch (not shown) which can be retracted against a pre-tension by means of a square nut which can be rotated by the handle set 14. In the embodiments shown, at least part of the pre-tension can be formed by the handle holding mechanism 124 in the door fitting 16. Locks 30 which only function with the handle holding mechanism can therefore also be used.

The door handle arrangement 26 is on the swing door 20 of 1 in the door handle area between the arrows A and B, and embodiments of the door handle area with the door handle arrangement 26 or of preliminary stages for forming the same are shown in the sectional view along the line AB in the 2 to 4 and 19 shown.

The different embodiments of these door fittings 16 designed for pivot bearing each have a substructure 32, 32a, 32b and a cover 34 for each broad side 31a, 31b of the door leaf 10. Embodiments of the substructure 32, 32a, 32b are shown in the 2, 4, 6 to 14, 15 to 18 and 20 Examples of embodiments of the covers 34 are shown in the 1 , 2 , 4 and 19 shown.

The substructure 32, 32a, 32b has a substructure body 36 in which a substantially cylindrical through-opening 38 is formed in the middle. The substructure body 36 and thus the through-opening 38 formed therein has an axial extension - corresponding to the thickness of the substructure body 36 - of at least 2 mm in order to provide sufficient bearing surface to absorb tilting moments on the door handle 42, 42a, 42b mounted therein. In particular, a thickness of 2 mm to 20 mm, preferably 3 mm to 10 mm, particularly preferably 4 mm to 7 mm, such as 5.5 mm, is provided for the substructure body 36.

At least one substructure 32, 32b on at least one of the broad sides 31b has at least one spring element 126, which exerts a restoring force on the door handle (42, 42a, 42b). As a result, the handle holder 124 is accommodated in the substructure 32, 32b arranged recessed in the door leaf. In the embodiments shown, the handle holder 124 is only provided in the substructure 32, 32b shown on the left in the figures; in other embodiments not shown in detail here, the substructure 32, 32a shown on the right can also be provided with the spring element 126 in a corresponding mirror image.

At least the substructure 32, 32b provided with the spring element 126 - here in the examples in 2 , 4 and 19 the substructure 32b shown on the left - is secured against rotation in the door leaf 18.

For this purpose, the substructure 32, 32b has, as shown in the 6 to 7 and 15 and 16 shown has a non-circular outer contour 102. This can be designed in different ways. The outer contour 102 is preferably designed symmetrically to at least one center plane, preferably to two orthogonal center planes.

For example, the outer contour 102 is designed in plan view as a regular polygon, such as in particular substantially rectangular or more preferably square. In particular, corners of the outer contour 102 are rounded in order to facilitate the manufacture of a complementary inner contour 120 in the door leaf body 54 of the door leaf 18.

A substructure 32 not forming part of the handle support 126 - as in the examples of 2 and 4 the substructure 32a shown on the right - can in principle also be designed differently, e.g. have a circular outer contour. In preferred embodiments, these substructures 32a are also designed with the same outer contour 102, so that only one type of substructure body 36 needs to be provided and, in addition, a handle holder 126 can be provided on both sides.

The inner diameter Di of the through opening 38 is precisely adapted to the outer diameter DT of a plug-in end 40 of the door handle 42, 42a, 42b of the handle set 14 to be stored, i.e. just so much larger than the outer diameter of the plug-in end 40 that the plug-in end 40 can be inserted without play.

Examples of the handle set 14 are in 2 , 5 and 19 indicated. The handle set 14 has two door handles 42, 42a, 42b and a handle shaft 44, here in the form of a square shaft. The door handle 42, 42a, 42b has a handle body 46 with a handle area and neck area 48 (not shown) and the insertion end 40 extending away from the handle body 46 with a uniform diameter DT, which is smaller than the diameter DDK of the handle body 46. A stop surface 50 is thus formed at the transition between the handle body 46 and the insertion end 40.

For use with a substructure 32 in accordance with the 6 to 14 In the embodiment shown, the door handle 42, 42b is provided with a spring receiving opening 128 into which the spring element 126 can engage. In the embodiments shown, the spring receiving opening 128 is formed by mutually aligned grooves in the tube wall of the insertion end 40. As a result, an open slot is formed on the insertion end 40 into which a rod-shaped region of the spring element 126 can be inserted.

In the following, a first embodiment of the substructure 32, 32b provided with spring element 126 is described with reference to the illustration in the 6 to 14 explained in more detail.

The substructure 32, 32b has the 6 to 8 shown substructure body 36, which is in the 9 and 10 Spring element 126 shown in FIG. 11 and 12 stop ring 130 shown and one in the 13 and 14 cover 132 shown.

The substructure body 36 has a recess 134 on the rear side facing the lock 30, in which the spring element 126 is at least partially received.

The recess 134 is, for example, ring-shaped. At least one projection 136.1, 136.2 projects into the recess 134 and forms at least one spring stop 138 which extends radially at least with a directional component and against which the spring element 126 strikes or can be suspended. In the embodiment of the 6 to 8 a first and a second projection 136.1, 136.2 are provided, so that the spring element 126 can be applied to the right or left of the first or second projection 136.1, 136.2, depending on the type of stop DIN.

The spring element 126 is designed as a mechanical spring made of elastic metal and has at least one winding 140 which is guided around the through-opening and whose ends are bent as force introduction elements 142.1, 142.2. A first force introduction element 142.1 is designed in the shape of a rod and is inserted into the spring receiving opening 128 during use. The second force introduction element 142.2 is designed to engage the projection 136.1, 136.2. For example, the second force introduction element 142.2 is bent in a hook shape so that it can be hooked onto the projection 136.1, 136.2 which serves as a spring stop 138.

The stop ring 130 has an engagement formation 144 on its inner circumference for positive engagement with the insertion end 40. In the embodiment shown, the engagement formation 144 has two opposing teeth 146.1, 146.2 for engagement in the grooves which also form the spring receiving opening 128. The stop ring 130 is thus fastened to the door handle 42, 42b in a rotationally fixed manner. On its outer circumference, the stop ring has a first and a second stop 148.1, 148.2, which have a the projections 136.1, 136.2 of the substructure body 36 and thus limit the rotational movement of the door handle 42, 42b.

The cover 130 has an edge 150 with which the cover 130 can be fastened to the rear side of the substructure body 36 by means of a suitable fastening device such as screws, fastening clips, bayonet lock or gluing or welding with the spring element 126 and the stop ring 130 interposed.

The recess 134 is dimensioned in depth - i.e. the axial extension with respect to the axis of rotation of the handle set - such that the inserted spring element 126 and the stop ring 130 are axially positioned by the attached cover 130 and are held in position.

Furthermore, the cover 130 has a central cover through-opening 152, the diameter of which corresponds to the inner diameter D _i of the through-opening 38 of the substructure body 36. With a corresponding axial length of the insertion end 40, this can thus be supported through the through-opening 38 of the substructure body 36 and through the cover through-opening 152. In the embodiment shown, the edge 150 of the cover 132 also has the non-circular outer contour 102 and, when in use, is flush with the rear of the base body 36.

The 15 and 16 The second embodiment of the substructure 32, 32b with spring element 126 shown corresponds in many elements to the first embodiment. Here, too, the recess 134 is provided on the rear side and here, too, the at least one projection 136.1, 136.2 is provided as a spring stop 138. However, the first force introduction element 142.1 is not seated directly on the door handle 42, 42b, but on a rotatable insert part 154 which is rotatably held in the substructure body 36. The insert part 154 has a sleeve area 156 for receiving the insertion end 40, which does not have to be provided with a spring receiving opening 128. In the 15 and 16 In the embodiment shown, this sleeve area 156 forms a contact surface 92 (to be explained later) for striking a stop surface 50 of the door handle 42, 42a, 42b to be inserted and a projection 94 extending through the cover 34. Furthermore, the insert part 154 has an insert part through-opening 158 on its rear wall 160 that deviates from a circular shape. The insert part through-opening 158 receives the handle shaft 44 in a form-fitting manner during use. Preferably, the contour of the insert part through-opening 158 is adapted to the outer contour of the handle shaft 44 and is designed to be square, for example, to accommodate a square.

A possible course of the spring element 126 on the insert part 154, which is made of plastic, for example, results from the representation of a comparative example of such an insert part 154, as shown in the 17 and 18 is shown. In 17 is the one in 15 Front side shown on the left, but cut away without the contact surface 92 and the projection 94. The spring element 126, designed as a spring, is guided with its winding 140 in a cavity in the sleeve area 156. The first force introduction area 146.1, designed as a bend, is anchored in the wall of the sleeve area. The second force introduction area 146.2 is also designed as a bend such that, in the rest state, one of the projections 136.1, 136.2 provided in the recess 134 as a spring stop 138 can be accommodated between them. An elongated hole is formed in the sleeve area 156, through which the second force introduction area 146.2 is guided and which allows the limited rotary movement of the handle shaft 44 and thus of the associated door handle 42a.

The first embodiment of the substructure 32, 32b with spring element 126 can be dimensioned axially smaller than the second embodiment, for which a door handle 42, 42b with spring receiving opening 128 is required. If this is as in 2 and 5 shown as a slot open at the free end, the door handle 42, 42b can be inserted into the through hole 38 of the factory-assembled substructure 32, 32b so that the rod-shaped first force introduction element 142.1 is inserted into the slot. The spring element 126 thus holds the door handle 42, 42b up or guides it back into its normal position after being operated.

The second embodiment of the substructure 32, 32b with spring element 126 has the advantage that no slot or the like needs to be provided at the insertion end 40. The door handle 42, 42b is indirectly acted upon and held up or guided back by the spring element 126 via the handle shaft 44 and the insert part 154. However, larger axial installation space may be required than in the first embodiment.

In the following, further details of the embodiments of the actuating mechanism 12 are provided with reference to 2 to 4 as well as 19 and 20.

For some handle sets 14 on the market, the diameter DT of the insertion end is 40 DT = 16 mm. Accordingly, the diameter diameter Di of the through opening 38, for example, in the range of 16.05 mm ≤ Di ≤ 16.10 mm.

The height and width DUa of the substructure body 36 is preferably in the range of 20 mm to 45 mm, more particularly in the range of 25 mm to 40 mm, preferably in the range of 29 mm to 33 mm.

The substructure body 36 is manufactured in particular as an injection-molded part from plastic, more particularly from polyoxymethylene (POM).

The substructure 32 has a support area 52 with which it is supported directly on a door leaf body 54 of the door leaf 18. The door leaf body 54 has a lock case recess 56 in which the lock 30 is preferably accommodated with a precise fit, and a handle recess 58 which is formed continuously from the respective broad side 31a, 31b to the lock case recess 56. The handle recess 58 is preferably formed as a through-cut recess across the door leaf body 54, which is made of chip-removing materials, such as wood materials, solid wood, HDF, MDF, chipboard, plywood, veneered lumber, laminated wood, optionally surface-coated or veneered. Thus, the recesses 58, 56, 66 provided in the door leaf body 54 for receiving the actuating mechanism 12 can be machined out of the door leaf body 54 by machining. Preferably, the lock case recess 56 is produced last.

The handle recess 58 is manufactured in such a way that, at least in the area in which the substructure 32 is accommodated, it has boundary walls 118 with an inner contour 120 that is complementary to the outer contour 102 of the substructure 32. The substructure 32 can thus be accommodated in the handle recess 58 in a form-fitting, rotationally fixed manner.

The handle recess 58 has, as can be seen from 2 to 4 and 19, at least one step 60 for supporting the support region 52 of the substructure 32. For this purpose, the handle recess 58 has a first region 62 located further inside with smaller dimensions D1 and a second region 63 located further outside with larger dimensions D2, in which at least the support region 52 of the substructure 32 is accommodated.

In embodiments not shown in detail, the substructure body 36 with the non-circular outer contour 102 can be accommodated in the second larger area 63, so that this larger area 63 has the boundary walls 118, the inner contour 120 of which is complementary to the outer contour 102. The dimensions D2 thus correspond to the height and width DUa of the substructure body 36 plus a small tolerance. The smaller area 62 can, for example, be circular in shape as a hole, where D1 designates a diameter that is smaller than the height and width DUa of the substructure body 36.

In the preferred embodiment shown, the 2 to 4 and 19 the substructure body 36 is accommodated in the smaller area 62, which has the boundary walls 118, the inner contour 120 of which is complementary to the outer contour 102. In this embodiment, the dimensions D1 therefore correspond to the height and width DUa of the substructure body 36 plus a small tolerance. The larger area 63 serves to accommodate the flange 90 of the substructure and the cover plate 34. The larger area 63 can, for example, be circular in order to accommodate a circular cover plate 34, with the dimension D2 designating a diameter that is slightly larger than the outer diameter DRa of the cover 34.

The cover 34 is in each case designed as a flat disc. For example, the cover 34 is made of metal, in particular steel, more particularly stainless steel, or other metal with a fine surface appearance, or of a material whose appearance is adapted to the surface of the area surrounding the door leaf 18 around the actuating device 12. For example, the cover 34 is made of an HPL disc or a plastic disc. The cover 34 can have different contours. For example, the cover 34 can be designed as a door plate, which is provided with corresponding openings for the door handle 42 or possibly for the locking cylinder or key opening. The cover 34 is preferably as shown in the 2 , 4 , and 19 shown, designed as a rosette, i.e. as a ring-shaped element with a central opening.

To accommodate the insertion end 40, the cover 34 has a preferably substantially circular inner opening 64. The inner opening 64 preferably has a diameter DRi in the range of 17 mm to 30 mm, in particular 19 mm to 25 mm and most preferably between 20 mm and 22 mm, e.g. 20.5 mm.

When executing the 2, 6 to 8, 15, 16 and 19 A projection 94 is formed on the substructure 32 to form a contact surface 92 for the door handle 42, in which the recess 110 is also completely accommodated. The central inner opening The opening 64 of the cover 34 then has a larger inner diameter DRi through which the projection 94 can be passed. In the embodiments shown, the cover 34 is formed by an annular disk, the thickness of which is preferably in the range of 0.25 mm to 2 mm, preferably 0.5 mm to 1 mm and most preferably between 0.6 mm and 0.8 mm.

Even when designed as a rosette, different outer contours of the cover 34 are possible. For example, the rosette can have a square or rectangular or other polygonal contour on the outside. The outer contour of the rosette is preferably circular, preferably with an outer diameter DRa in the range of 30 mm to 65 mm, more preferably 40 mm to 60 mm and most preferably between 50 mm and 55 mm, e.g. 52.5 mm.

In the following, the 1 to 4 and 19 and 20 special features of the illustrated embodiments of the door leaf 10 are explained in more detail. 3 shows the section along AB through the door leaf 18, whose door leaf body 54 is already provided with the handle recess 58, even before the lock case recess 56 is inserted. The 4 and 2 and 19 also show the door fitting 16, once mounted on the door leaf 18 and once in a partially cut exploded view. The 20 shows a top view of the substructure 32, 32a according to the 19 embodiment shown on the right, wherein the position of the cover 34 in the assembled state is shown by a dash-dotted line.

The substructure 32 has the substructure body 36 with the non-circular outer contour 102, with a flange 90 protruding outwards all around at a first end of the same. The flange 90 is preferably also designed with a contour corresponding to the outer contour 102 - here, for example, square with rounded corners - on an end edge region of the substructure body 36 with flange dimensions DF that are - preferably by a few millimeters - larger than the corresponding outer dimensions DUa of the substructure body 36. For example, the flange dimension DF is 1 mm to 10 mm larger than the outer dimension DUa of the substructure body 36. The flange 90 has a significantly smaller axial extension (= flange thickness) than the substructure body 36. The flange thickness is selected to be just large enough that the flange 90 can serve as a support region 52 for positioning the substructure 32 without deformation. The substructure 32 is supported on the side of the flange 90 facing the other end of the substrate body 36.

Furthermore, a contact surface 92 is formed on the substructure 32 for directly supporting the stop surface 50. For this purpose, the axial annular projection 94 is formed around the through opening 38 on the outward-facing end of the substructure body 36, on which the flange 90 is also arranged. The projection 94 has an outer diameter DKa which is dimensioned such that the projection 94 can engage precisely, i.e. without play, in the inner opening 64 of the cover 34.

In the handle recess 58 in the door leaf body 54 of the embodiments shown, only the first region 62 located further inside is provided with a smaller dimension D1 and with the boundary wall 118 that is complementarily adapted to the outer contour 102, and the second region 63 located further outside is provided with a wider diameter D2, which forms a modified form of the cover receiving region 68 as follows. The cover receiving region 68 formed by the second region 63 is further adapted in terms of its contour to the cover 34 so that the cover 34 can be received therein with a precise fit. The depth of the second region 63, however, corresponds to the sum of the thickness of the cover 34 and the flange thickness. The flange 90 rests as a support region 52 on the step 60 formed between the first and second regions 62, 63. The inner contour 120 of the boundary wall 118 of the first area 62 is precisely adapted with its dimensions to the outer contour 102 of the substructure body 36.

The flange dimensions DF are significantly smaller than the diameter D2 of the second region 63 forming the cover receiving region 68. The second region 63 is precisely aligned with the associated nut of the lock 30.

To install the door fitting 16, the substructure 32 is inserted so that the substructure body 36 engages in the first area 62 in a rotationally secure manner and the flange 90 rests on the step 60. Then hot melt adhesive 96 is filled into the second area 63 and the cover 34 is inserted. While the hot melt adhesive is still liquid, the substructure 32 is aligned radially on the cover 34 in order to insert the projection 94 precisely into the inner opening 64. The height of the projection 94 is dimensioned such that it completely reaches through the inner opening 64 or protrudes from it. The hot melt adhesive 96 is to be filled in such a way that the free spaces in the second area 63 are filled with it.

The handle set 14 is then attached, with the stop surfaces 50 directly rest on the associated contact surfaces 92. Compensating washers 86 are therefore not necessary.

For further possible designs of the door leaf 10, reference is made to the literature reference [3], which shows various possible further designs of the door leaf 10 and the door provided with it.

At the 19 and 20 In the variant shown with a locking mechanism 28 that engages the handle set 14, one of the door handles 42 - here, for example, the door handle 42a shown on the right - is designed with a locking element 104 that, in a locking position, engages in a counter bearing 108 on the associated substructure 32 in order to secure the door handle 42 against rotation. The locking mechanism 28 is thus designed to prevent rotation of the door handle 42, 42a relative to the substructure 32 in the locking position and to enable it in the unlocking position.

The substructure 32, 32a interacting with the locking element 104 - in this example in 19 the substructure 32, 32a shown on the right - is also secured against rotation in the door leaf 18.

For this purpose, this substructure 32, 32a, which acts as a counter bearing, also has the non-circular outer contour 102.

At the 19 and 20 In the embodiment shown, at least one radial recess 110 for forming the counter bearing 108 is formed on the through opening 38 of the substructure 32, 32a interacting with the locking element 104. The radial recess 110 is designed in particular as an axially continuous and radially inwardly open groove 112.

The locking element 104 is arranged on the neck region 48 of the door handle 42a shown here on the right so that it can be moved axially relative to the axis of rotation of the neck region 48. It has a front end 105 which is pushed forward in the locking position in order to engage in the recess 110 of the counter bearing 108. The front end 105 and the recess 110 are adapted to one another so that the end 105 engages in the locking position essentially without play or with little play.

The locking element 104 is designed in particular as a slider which is mounted axially displaceably in the neck region 48. In the embodiments shown, the slider also has the actuating element 106. The actuating element 106 is designed as a button or projection which protrudes from the pusher body 46 and can be moved by a user in order to move the locking element 104 from the locking position to the unlocking position and vice versa.

At the 19 In the embodiment shown, the locking element 108 is arranged on the upper side of the neck area 48 of the door handle 42a shown on the right. As in 20 As shown, the recess 110 of the substructure 32 is also arranged at the top. In this embodiment, the door handle 42a can only be used on the side provided for this purpose. If the locking mechanism 28 is to be provided on the other side, a mirror-image door handle 42 is to be provided. In other words, the other door handle 42b should then be equipped with the locking element 104.

The handle set 14 can, for example, be designed as described and shown in more detail in [11]

For further possible embodiments of the actuating mechanism 12, reference is also made to the German patent applications DE 10 2020 134 924 A1 and DE 10 2022 107 184.7 which are incorporated by reference and form part of the disclosure here. In particular, embodiments presented here can be combined as desired with further features of the embodiments of these German patent applications DE 10 2020 134 924 A1 and/or 10 2022 107 184.7 be combined.

Door leaves (10) with flush door fittings (16) for interaction with a handle set (14) have been described, wherein a substructure (32, 32a, 32b) for rotatably supporting an insertion end (40) of a door handle (42, 42, 42b) of the handle set (14) is recessed under a cover (34) in a door leaf (18). In order to enable more convenient operation even when using different door handles (42, 42a, 42b) available on the market, optionally also with a locking mechanism (28) on the door handle (42a), it is proposed that the substructure be supported in a form-fitting manner against twisting in the door leaf (18) and have a spring element (106), in particular for holding the handle up, for imposing a restoring force on the door handle (42b).

List of reference symbols:

10

door leaf

12

operating mechanism

14

handle set

16

door fittings

18

door leaf

20

swing door

22

frame

24

door hinge

26

door handle arrangement

28

locking mechanism

30

Lock

31a

broadside (for example, hinge side)

31b

broadside (for example, counterband side)

32, 32a, 32b

substructure

34

cover

36

substructure body

38

passage opening (of the substructure)

40

insertion end (door handle)

42, 42a, 42b

door handles

44

pusher shaft

46

pusher body

48

neck area

50

stop surface

52

support area

54

door leaf body

56

lock case recess

58

handle recess

60

Level

62

first area

63

second area

64

inside opening (for door handle in cover/rosette)

68

cover receiving area

90

flange

92

contact surface

94

projection

96

hot melt adhesive

102

outer contour

104

locking element

106

actuator

108

counter bearing

110

radial recess

112

Nut

114

castle side

118

boundary wall

120

inner contour (complementary to the outer contour)

122

locking element recess

124

trigger hold

126

spring element

128

spring receiving opening

130

stop ring

132

Lid

134

rear recess

136.1

first lead

136.2

second lead

138

spring stop

140

winding

142.1

first force introduction area

142.2

second force introduction area

144

intervention training

146.1

first tooth

146.2

second tooth

148.1

first attack

148.2

second attack

150

edge

152

lid opening

154

insert part

156

sleeve area (example for sleeve)

158

insert part through hole

160

back wall

Di

inner diameter of the cylindrical through hole

DT

outer diameter of the shank end

DDK

diameter of the pusher body

DRa

outer diameter rosette (cover 34)

DRi

inner diameter of the door handle rosette

DAi

inner diameter cover receiving area

DF

flange dimension

DUa

External dimensions (height, width) substructure body

DKa

outer diameter projection

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• DE 20 2005 016 217 U1 [0002]
• DE 10 2007 000 908 B3 [0002]
• EP 2 754 790 A1 [0002]
• DE 10 2018 100 360 A1 [0002]
• EP 4 019 716 A1 [0002]
• EP 2 284 335 A2 [0002]
• DE 39 31 472 A1 [0002]
• DE 20 2017 004 533 U1 [0002]
• DE 20 2013 011 573 U1 [0002]
• DE 20 2007 030 655 A1 [0002]
• EP 3 067 491 B1 [0002]
• GB 2 123 070 A [0002]
• DE 10 2018 129 450 A1 [0002, 0099]
• DE 10 2022 107 184.7 [0038, 0171]
• DE 10 2020 134 924.6 [0099, 0103, 0106]
• DE 10 2020 134 924 A1 [0171]
• US 10 2022 107 184.7 [0171]

Cited non-patent literature

• Catalogue “Interior doors” of the Hörmann KG sales company, with the printing note “Status 07.2020 / Print 07.2020 / HF 86734 de / P.xxx www.hoermann.com”, downloaded from the Internet on 21.12.2020 [0002]

Claims (15)

Door leaf (10) with a door leaf (18) with a door leaf body (54) and an actuating mechanism (12) which has a handle set (14) which interacts with a door fitting (16), wherein the door fitting (16) has a substructure (32) for pivotally mounting the handle set (14) and a cover (34) for covering the substructure (32), wherein the handle set (14) has a door handle (42, 42a, 42b) which has a handle region and a neck region (48), wherein the neck region (48) comprises an insertion end (40), wherein the substructure (32) has a through-opening (38) into which the insertion end (40) can be inserted and rotatably mounted therein, wherein a lock case recess (56) for receiving a lock actuated by the door handle (42, 42a, 42b) operable lock (30) and at least one handle recess (58) which is at least partially continuous is provided between at least one of the broad sides (31a, 31b) of the door leaf (18) and the lock case recess (56), wherein the substructure (32) of the door fitting (16) is received in the handle recess (58) so that the door fitting (16) is flush with a surrounding surface, wherein the substructure (32) is received in the handle recess (58) in a form-fitting manner and secured against twisting, and wherein the substructure (32) has a spring element (126) which exerts a restoring force on the door handle (42, 42a, 42b). door leaf (10) after claim 1 , characterized in that the substructure (32) has a substructure body (36) which is positively received in the handle recess (58) so as to be secured against twisting, and to which the spring element (126) is fastened. door leaf (10) after claim 2 , characterized in that the substructure body (36) has at least one or more of the following areas: 3.1 a recess (134) on the rear side facing the lock (30), in which recess (134) the spring element (126) is at least partially received, 3.2 at least one spring stop (138) extending radially at least with one directional component, on which the spring element (126) engages, 3.3 at least one radial or axial projection (136.1, 136.2) as a spring stop and/or stop for limiting the handle movement. Door leaf (10) according to one of the Claims 2 or 3 , characterized in that the substructure body (36) is designed as a plate body, wherein an outer contour (102) of the plate body, seen in plan view, is non-circular, angular, quadrangular, square, rectangular or in the form of another polygon or is symmetrical with respect to at least one central plane, wherein a radially inwardly directed boundary wall (118) of the handle recess (58) is designed to be complementary to the outer contour (102) of the substructure body. Door leaf (10) according to one of the preceding claims, characterized in that the spring element (126) 5.1 is designed as a spring with at least one winding (140) extending at least partially or completely around the through opening (38) and a first force introduction region (142.1) which is fixed to the substructure (32) and a second force introduction region (142.2) which is fixed directly or indirectly to the neck region (48), and/or 5.2 engages in a spring receiving opening (128) on the neck region (48) or 5.3 engages in a sleeve (156) which is rotatable in the substructure, into which the neck region (48) is inserted and which is designed with a non-circular opening (158) for the positive reception of a handle shaft (44) of the handle set (14). Door leaf (10) according to one of the preceding claims, characterized in that the substructure (32) has a stop ring (130) which is connected in a rotationally fixed manner to the neck region (48) and limits an axial movement of the spring element (126) and a rotational movement of the door handle (42, 42a, 42b). Door leaf (10) according to one of the preceding claims, characterized in that the substructure (32, 32a, 32b) has a cover (132) for axial positioning of the spring element (126) on a rear side directed towards the lock (30). Door leaf (10) according to one of the preceding claims, characterized in that the substructure (32, 32a, 32b) is attached exclusively a) by positive locking on its outer contour (102) and by edging between a step (60) on the handle recess (58) and the cover (34) or b) by positive locking on its outer contour (102), by edging between a step (60) on the handle recess (58) and the cover (34) and by an adhesive connection. Door leaf (10) according to one of the preceding claims, characterized in that the handle set (14) has one or two door handles (42, 42a, 42b) which are mounted in associated substructures (32, 32a, 32b), and that a locking mechanism (28) is provided which prevents a rotation of a lockable door handle (42a) of the handle set (14) relative to the substructure (32a) mounting this lockable door handle (42a) in the locking position and enables it in the unlocking position. door leaf (10) after claim 9 , characterized in that the locking mechanism (28) has a locking element (104) movable axially to its axis of rotation on a neck region (48) of the lockable door handle (42a) and a counter bearing (108) for the locking element (104) on the substructure (32a) which pivotally supports the lockable door handle (42a). door leaf (10) after claim 10 , characterized in that the counter bearing (108) has a radial recess (110) in the through opening (38). door leaf (10) after claim 11 , characterized in that 12.1 the radial recess (110) is arranged on the lock side (114) of the substructure (32a) and/or 12.2 a first and a second radial recess (110) are formed on two opposite sides of the through opening (38). Door leaf (10) according to one of the Claims 9 until 12 , characterized in that an actuating element (106) for actuating the movement of the locking element (104) is provided on the lockable door handle (42a). door leaf (10) after claim 13 , characterized in that 14.1 the actuating element (106) projects displaceably from the neck region (48) of the lockable door handle (42a) and/or 14.2 the actuating element (106) is arranged on the side of the neck region (48) facing away from the handle region. Method for assembling a door fitting (16) for interaction with a handle set (14) which has a door handle (42, 42a, 42b), the door handle (42, 42a, 42b) comprising a neck region (48) with a larger diameter (DDK) and an insertion end (40) extending from the neck region (48) with a smaller diameter (DT), on a door leaf (18) which has a door leaf body (54), the method comprising the steps of: Providing a substructure (32, 32a, 32b) for pivotally mounting the handle set (14) and a cover (34) for covering the substructure (32, 32a, 32b), the substructure (32, 32a, 32b) having a partially cylindrical through-opening (38) for detachable insertion and rotatable Bearings of the insertion end (40), wherein the substructure (32, 32a, 32b) has a non-circular outer contour (102) and has a spring element (126), Providing a lock case recess (56) for receiving a lock (30) and at least one at least partially continuous handle recess (58) between at least one of the two broad sides (31a, 31b) of the door leaf (18) and the lock case recess (56) in the door leaf body (54) such that the substructure (32) and the door fitting (16) can be received in the handle recess (58) such that the door fitting (16) is flush with a surrounding surface of the door leaf (18) and the substructure (32) is located on a surface on the door leaf body (54) between the lock case recess (56) and a support region (52) of the Substructure (32) can support the step formed by the spring element (126) and is secured against twisting by means of a form-fitting connection with the non-circular outer contour (102), floating mounting of the substructure (32) in the handle recess (58), fixing the substructure (32) by means of the flush-fitted cover (34) or by means of the flush-fitted cover (34) and an adhesive (96) and inserting the door handle (42, 42a, 42b) into the through-opening (38) while connecting the door handle (42, 42a, 42b) to the spring element (126) in such a way that the latter exerts a restoring force on the door handle (42, 42a, 42b) to return it to a normal position.

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