EP2141310B1 - Mounting joint with spring element for door handle - Google Patents

Abstract

The device has a guide bush (9) provided for axial fixing of a guiding attachment (7) of a turning handle (2) in a through hole (13). The attachment is fixed at the bush by a spring element (8), where the bush is firmly connected with base plates (4-6) e.g. round or profiled door collars. The spring element i.e. spring ring, is arranged within the bush of the turning handle in a form-fit manner, and cooperates with the attachment in a form-fit manner for fixing the turning handle in the bush in rotatable and axially secured manner. The spring element is made of plastic. An independent claim is also included for a method for fastening a turning handle.

Description

The invention relates to a fastening device for a rotary handle on a door leaf or a window frame according to the preamble of claim 1 and a method for fastening the rotary handle according to the preamble of claim 11.

State of the art

During the manufacture of doors or windows corresponding door handles (also referred to as doorknobs) or window handles on the door leaf or window frame are usually secured by means of a locking ring against pulling out. However, auxiliary tools are required for the assembly, so that the assembly must be done either in the factory or on site requires the use of special circlip pliers. In addition, the use of suitable spring washers and washers can often not be avoided in order to ensure a low clearance of the assembled door handle or window handle.

For example, it is known from the prior art to axially secure a door handle within the guide bush of a door fitting by means of a locking ring, wherein the locking ring is mounted on a side facing the handle portion of the door handle of the guide bushing.

For this purpose, the guide bush in its region facing the door handle on the left and right side each have a milled recess into which the securing ring is inserted and then cooperates with a groove provided on the guide projection of the door handle. This embodiment has the disadvantage that the production of the guide bush of the body causes higher costs, since the attachment of the left and right side cutout for receiving the locking ring requires an additional manufacturing step. In addition, the installation of the door fitting is more expensive for a customer, since after attaching the door handle nor a mounting of the locking ring must be made. The final assembly of the base body covering the fitting plate on the door is cumbersome, since the fitting plate is to be mounted in this case on the door handle.

Furthermore, it is known from the further prior art to mount a door handle within the guide bush of the door handle to a door leaf fixing body by a guide lug of the door handle is inserted into the guide bush, so that the guide lug projects beyond the guide bush on the side facing away from the door handle of the body , Then there is a locking of the guide projection within the guide bush by means of a locking ring.

The unit formed from the door handle and base body is then mounted on a corresponding door leaf, wherein the door handle in the assembly of the base body on the door leaf is a hindrance, since a corresponding space or recess on the door panel is required. Finally, the mounting of the fitting plate, whereby here the already mounted door handle is disturbing during assembly.

In addition, it is from the DE 10 2004 012278 A1 known to axially rotatably secure a door handle for mounting on a door leaf within a body by a guide lug of the door handle is first provided with a bearing and a Unterrosette and the Unterrosette is attached to the guide lug of the door handle using a locking ring. For this purpose, the retaining ring engages in a trained on leadership approach, annular circumferential groove. Also in this case, the assembly of the main body on the door leaf takes place only when the door handle is already connected to the main body. Another disadvantage is that the final assembly of the fitting cover must be done with already mounted door handle.

The DE 299 24 696 U1 from which a fastening device according to the preamble of claim 1 is known discloses a door handle to be attached to a mounting plate. For this purpose, the mounting plate on a socket and a base plate, which are fixed by means of a spacer ring to each other. A smooth snap ring is inserted in the bush, which engages in a locking groove of the door handle after mounting the door handle on the mounting plate. For axial storage of the door handle a sliding sleeve is provided.

The WO2004 / 063576 A1 discloses a door handle which is fixed to be fixed to a base plate. A locking element provided with a recess is arranged by a hood behind the base plate. After assembly, the locking element engages in a recess of the door handle.

Object of the present invention is to provide a fastening device for a rotary handle for mounting on a door leaf or window frame, which allows a sufficient axial fixation of the rotary handle on the door, while allowing easy installation and is inexpensive to perform.

Disclosure of the invention

The object underlying the invention is achieved by a fastening device or by a method for fastening a rotary handle with the characterizing features of the independent claims 1 and 11 in an advantageous manner.

The invention is essentially based on the fact that for the axial fixation of the rotary handle, a spring element is provided which is pre-assembled within the central opening of a guide bush and cooperates positively after the introduction of a guide projection of the rotary handle in the guide bushing with the guide lug. In this way, the rotary handle is rotatably and axially secured fixed in the guide bushing. The particular advantage of this embodiment is that the guide bush by means of a fitting body already factory pre-assembled on a door leaf and can be provided with a spring element, so locally only a final assembly of the rotary handle (also called doorknob or door handle) is required. In addition, the identical guide bush can always be used for different fitting body and door handle. For example, the guide bush can be caulked with the respective fitting body, screwed or verschscheißt.

The assembly of the rotary handle is carried out by simply inserting its guide lug in the guide bush and by independently locking the spring element with the guide approach without the use of a special tool. In addition to this simple installation of the rotary handle is to be seen as a further advantage that no pre-determination is required, which rotary handle is ultimately to be mounted on the door or the door leaf. For example, there is still the possibility for a customer to decide on a suitable turning handle before its final assembly.

Despite the ease of assembly, an effective axial anchoring of the rotary handle is ensured in the guide bush, without, for example, spring washers or washers must be used for assembly.

Another advantage of the fastening device according to the invention is the fact that the mounting of a body protecting the base body cover on the door panel is substantially simplified.

While in conventional fastening devices, the main body cover must always be mounted with already mounted rotary handle and thus under difficult conditions, in the present case, the main body cover can be mounted before the rotary handle is locked in the guide bushing. In this way, the selection of a suitable main body cover can be made immediately prior to assembly of the rotary handle and is thus independent of the type and embodiment of the subsequently mounted rotary handle.

It is particularly advantageous that the spring element according to the invention is designed wavy. This is based on the consideration that a wave-shaped spring ring allows a large power transmission and a good spring action for locking within the Nuteinstichs the guide bushing shows.

Further advantageous embodiments of the present invention are the subject of the dependent claims.

It is advantageous if the spring element used as a securing element is positioned in a guide groove of the rotary handle facing Nuteinstich the guide bush. Furthermore, it is advantageous if the spring element engages in the mounted state of the rotary handle at the same time in a groove provided on the guide lug of the respective rotary groove groove. In this way, a good rotation of the guide lug is ensured within the guide bushing; At the same time, however, the guide lug is sufficiently axially fixed within the guide bush, wherein the game between the twist grip and guide lug is minimized.

Furthermore, it is advantageous if the spring element is designed in the form of a spring ring. Since it requires the assembly of the spring element, that this is first compressed so that its circumference is reduced, it is advantageous if this is designed to be annular with two open ends.

Moreover, it is advantageous if the spring element has at least one bevelled inner edge. Since during assembly of the rotary handle whose guide projection is inserted into the guide bushing of the body and meanwhile displaces the preassembled in a groove groove of the guide bushing spring element outward into the recess of Nuteinstichs, promotes the guide approach facing and tapered inner edge of the spring element this displacement process.

According to a particularly advantageous embodiment of the present invention, the spring element is made of a plastic. This causes sufficient elasticity and long-term corrosion resistance of the spring element.

It is also advantageous if the rotary handle secured in the guide bush by means of the spring element can only be removed again from the guide bushing by destroying the spring element. In this way it is prevented that the rotary handle may be inadvertently released from the guide bushing, for example. With a powerful opening or closing of the corresponding door, again. In addition, the permanent connection between the rotary handle and guide bushing may possibly be made possible by destruction of the replaceable spring element made of plastic.

Advantageously, the base body moreover has fastening means for a main body cover. The particular advantage of this embodiment is that not only the rotary handle can be fixed without the use of tools on the structural unit formed from the door leaf and body, but also the basic body cover can be connected by simple locking with the body. This allows, for example, a on-site assembly of the body cover and rotary handle, without the use of any kind of tool would be necessary.

Brief description of the figures

Embodiments of the present invention are illustrated in the figures and explained in more detail in the following description.

Figur 1:

die perspektivische Darstellung eines Türbeschlags in einem fertig montierten Zustand,

Figur 2:

einen Türbeschlag vor der Montage in einer schematischen Explosionszeichnung,

Figur 3:

einen Rosettenbeschlag vor der Montage als Variante der in Figur 2 dargestellten Ausführungsform,

Figur 4:

eine schematische Darstellung eines zur Anwendung inner- halb der erfindungsgemäßen Befestigungsvorrichtung geeig- neten Federelements mit möglichen Verformungsrichtungen,

Figur 5:

einen teilmontierten Türbeschlag unmittelbar vor der Monta- ge eines Drehgriffs,

Figur 6:

eine Schnittdarstellung des Türbeschlags in einem fertig montierten Zustand ohne Abdeckung und

Figur 7:

den in Figur 6 dargestellten Türbeschlag in einer Seitenan- sicht (oben) sowie in einer Querschnittsdarstellung entlang der in der Seitenansicht angegebenen Schnittlinie (unten).

Show it:

FIG. 1:

the perspective view of a door fitting in a fully assembled state,

FIG. 2:

a door fitting before assembly in a schematic exploded view,

FIG. 3:

a rosette fitting before mounting as a variant of in FIG. 2 illustrated embodiment,

FIG. 4:

1 a schematic representation of a spring element suitable for use within the fastening device according to the invention with possible deformation directions,

FIG. 5:

a partially assembled door fitting immediately before the assembly of a rotary handle,

FIG. 6:

a sectional view of the door fitting in a fully assembled state without cover and

FIG. 7:

the in FIG. 6 shown in a side view (top) and in a cross-sectional view along the section line indicated in the side view (bottom).

Embodiments of the invention

FIG. 1 shows a door fitting 1 in a fully assembled state. In this case, the door handle or rotary handle 2 by means of a base body, the in FIG. 1 is covered by a main body cover 3, attached to a door leaf, not shown deductible.

In FIG. 2 different basic body 4, 5, 6 in the form of a door plate 4, a round rosette 5 and a profile door rosette 6 are shown, which are suitable for fastening the rotary handle 2 to a door leaf or window frame or the like, not shown. The base body 4, 5, 6 comprises a central passage opening 13 into which a guide bushing 9 can engage and is preferably firmly connected to the base body 4, 5, 6. As in particular in FIG. 3 can be seen, the guide bush 9 in turn comprises a central opening, within which a first groove recess 10 is formed. In the first groove recess 10, for example, a spring element 8 is inserted as a securing element for the axial fixation of the rotary handle 2.

In FIG. 4 the spring element 8 is shown in a preferred embodiment. The spring element 8 is, for example, executed in the form of a spring ring open on one side. In addition, the spring element 8 takes a Wavy shape to achieve a sufficient shear surface, which allows a large power transmission. In FIG. 4 is illustrated by arcuate arrows, which deformation direction shows the designed as a spring ring spring element 8 during compression. Furthermore, it is shown by outwardly directed arrows, in which way the spring element 8 is deformed to allow the assembly of the rotary handle 2.

The spring element 8 is preferably made of a plastic, in order to ensure a low friction of the spring element 8 at the contact surfaces. In addition, the spring element 8 made of plastic is the first to when the tensile forces on the connection between the rotary handle 2 and guide bushing 9 are too high and thus destruction of the spring element 8 takes place.

For positioning of the spring element 8 within the guide bushing 9 this is inserted in a compressed state in the central opening of the guide bush 9 until the spring element 8 engages in the first groove groove 10, there expands and is fixedly positioned in the relaxed state. In the installed state, the spring element 8 at least partially narrows the clear width of the central opening of the guide bushing 9.

The present in a partially assembled state door fitting is in FIG. 5 shown. In this case, the base body 4, 5, 6 and the guide bushing 9 form a structural unit wherein the spring element 8 is already positioned at the factory within the first groove groove 10.

The rotary handle 2 preferably has, at its end facing the guide bushing 9, a guide projection 7 which is inserted into the central opening of the guide bushing 9. The guidance approach 7 comprises For example, a second groove recess 11 which is formed on the outer surface of the guide projection 7.

While the guide lug 7 of the rotary handle 2 is inserted into the central opening of the guide bush 9, the spring element 8 is widened by the front edge of the penetrating guide lug 7 and displaced into the recess formed by the first groove groove 10. As soon as the second slot groove 11 is at the level of the spring element 8, the spring element 8 can relax and assume its original shape. It engages in the second groove groove 11 of the guide projection 7 and locked with this. In this way, the spring element 8 is positioned fixed both in the first groove recess 10 and in the second groove groove 11 and prevents axial movement of the guide projection 7 within the guide bushing 9. For this purpose, the first and the second groove groove 10, 11 are preferably matched to one another there is only a small game between the parts. At the same time, however, a free rotation of the rotary handle 2 is ensured within the guide bushing 9.
The thus assembled door fitting is in the FIGS. 6 and 7 shown in more detail. There, it is shown that the base body 4, 5, 6 preferably has fastening means for fixing the base body cover 3, which are formed, for example, in the form of latching lugs in the region of the periphery of the base body 4, 5, 6. These allow a simple and in particular tool-free installation of the main body cover 3 on the base body 4, 5, 6.

Furthermore, in FIG. 7 recognizable that the rotary handle 2 has a receptacle for a square. In a fully assembled state of the door fitting protrudes a square-shaped axis for the door lock into this receptacle, whereby the door lock by operation of the rotary handle 2 is operated.

The invention further relates to a method for fastening a rotary handle 2 to a base body 4, 5, 6 of a door leaf or a window frame. This is preferably done using a fastening device, as characterized in the context of claims 1 to 11 in more detail.

First, a guide bush 9 for receiving the guide projection 7 of a rotary handle 2 is fixedly positioned in a base body 4, 5, 6. In this way, the guide bushing 9 and the base body 4, 5, 6 form a structural unit. This can be done, for example, by caulking the guide bushing 9 with the base body 4, 5, 6, for example. At the back. Alternatively, an attachment by welding, screwing or riveting is conceivable.

It is advantageous first of all to carry out the guide bushing 9 and the base body 4, 5, 6 as two separate components and subsequently to connect them to one another, since in such a case, using the same guide bushing 9, different fittings or base bodies 4, 5, 6 can be used. All other parts of the door fitting can be configured identically. This allows the realization of various variants of a door fitting, which nevertheless comprises a large number of identical components.

In a further step, for example, the spring element 8 is inserted into a central opening of the guide bush 9 at the factory. For this purpose, the spring element 8 is compressed until the two open ends of the spring element 8 almost touch and the outer diameter of the spring element 8 is reduced so far that it can be inserted axially into the central opening of the guide bushing 9. In this case, the spring element 8 is introduced up to the level of the first groove groove 10 of the guide bush 9, where it can expand independently and positively engages in the first groove recess 10. This assembly requires no tools.

Such a preassembled fitting consisting of base body 4, 5, 6, guide bushing 9 and spring element 8 may optionally be provided with a main body cover 3 and delivered to a customer who screwed only the main body 4, 5, 6 with a door or a window and Finally, the rotary handle 2, attached to the base unit 4, 5, 6 and guide bushing 9 formed structural unit. For this purpose, the rotary handle 2 is introduced with its guide projection 7 in the guide bush 9, wherein the spring element 8 is expanded by the action of the end face of the guide projection 7 and is displaced into the groove groove 10 of the guide bushing 9.

For this purpose, the spring element 8 preferably has beveled inner edges 12 on the surfaces coming into contact with the end face of the guide projection 7. This allows a displacement of the spring element 8 in the first groove groove 10 by inserting the guide projection 7 in the central opening of the guide bush 9 without any special effort. Subsequently, the spring element 8 locks with the second groove recess 11 on the guide projection 7 of the rotary handle 2 positively.

In this way, the rotary handle 2 is irreversibly fixed within the guide bushing 9, wherein the rotary handle 2 is axially secured in position and yet rotatably supported in the guide bushing 9. To disassemble the door handle 2, the spring element 8 must first be destroyed, whereupon the rotary handle 2 can be removed from the guide bushing 9. Subsequently, a renewed locking of the rotary handle 2 in the guide bushing 9 can take place by using a further spring element 8.

LIST OF REFERENCE NUMBERS

1

Door fitting (fastening device)

2

Rotary handle (door handle)

3

Base cover

4

Basic body (shield)

5

Basic body (round rosette)

6

Basic body (profile door rosette)

7

leadership approach

8th

spring element

9

guide bush

10

first groove recess (guide bushing)

11

second groove recess (guiding approach)

12

Bevel (spring element)

13

Through opening

Claims (15)

1. An attachment device (1) for a turning handle (2), with a body (4, 5, 6), mountable to a door leaf or to a window frame, which body has a break-through (13) for a guide bushing (9), wherein the guide bushing (9) is provided for axially fixing a guide neck (7) of the turning handle (2) in the break-through (13), and the guide neck (7) of the turning handle (2) is fixed by means of a spring element (8) at the guide bushing (9), and the proper guide bushing (9) is secured to the body (4, 5, 6), wherein the spring element (8) is positively disposed within the guide bushing (9) of the turning handle (2) and positively cooperates with the guide neck (7), in order to fix the turning handle (2) in the guide bushing (9) and in a rotatable and axially secured manner,
   characterized in that
   the spring element (8) is configured to be undulated.
2. An attachment device (1) according to claim 1, characterized in that the spring element (8) engages in an internal recess (10) of the guide bushing (9) which faces the guide neck (7).
3. An attachment device (1) according to claim 1 or 2, characterized in that the spring element (8) engages in an internal recess (11) of the guide neck (7).
4. An attachment device (1) according to any of the claims 1 to 3, characterized in that the spring element (8) is configured as a spring ring.
5. An attachment device (1) according to any of the preceding claims, characterized in that the spring element (8) has a beveled inner edge (12).
6. An attachment device (1) according to any of the preceding claims, characterized in that the guide bushing (9) is hammer-tightened to the body (4, 5, 6).
7. An attachment device (1) according to any of the preceding claims, characterized in that the body (5, 6) is a round anchoring plate or profile door anchoring plate.
8. An attachment device (1) according to any of the preceding claims, characterized in that the spring element (8) is made from plastic material.
9. An attachment device (1) according to any of the preceding claims, characterized in that the turning handle (2), which is rotatably and axially secured and fixed in the guide bushing (9) by means of the spring element (8), can only be removed from the guide bushing (9) by destroying the spring element (8).
10. An attachment device (1) according to any of the preceding claims, characterized in that the body (4, 5) has attachment means for a body covering (3).
11. A method for attaching a turning handle (2) to a body (4, 5, 6) of a door leaf or a window frame, which body has a break-through (13) for a guide bushing (9), wherein the guide bushing (9) serves for axially fixing a guide neck (7) of the turning handle (2) in the break-though (13) and is firmly secured to the body (4, 5, 6),
    characterized in that
    an undulated spring element (8) is positively disposed within the guide bushing (9) in such a way that, when introducing the guide neck (7) of the turning handle (2) into the guide bushing (9), it latches and positively cooperates with the handle, in order to fix the turning handle (2) in the guide bushing (9) in a rotatable and axially secured manner.
12. A method according to claim 11, characterized in that the spring element (8) is inserted into an internal recess (10) of the guide bushing (9).
13. A method according to claim 12, characterized in that the spring element (8) is placed into the guide bushing (9) in such a way that the side, provided with a beveled inner edge (12), points in the direction of the guide neck (7) to be introduced into the guide bushing (9).
14. A method according to any of the claims 11 to 13, characterized in that the spring element (8) latches with the guide neck (7) by engaging in an internal recess (11) thereof.
15. A method according to any of the claims 11 to 14, characterized in that, prior to introducing the guide neck (7) of the turning handle (2) into the guide bushing (9), the body (5) is provided with a body covering (3).

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