FR3063302A1 - DOOR CLOSURE DEVICE - Google Patents

Abstract

The present invention relates to a door closing device comprising a housing, a closing arm rotatably placed in the housing, biased by a closing spring unit for the transmission of force between a door leaf and a fixed frame, a damper for damping the closing movement of the door leaf and means for fixing the door closing device on the door leaf. The fixing means comprise an installation zone provided on the housing, through which the door closing device can be installed on a rabbet of the door leaf. The closing arm is arranged and biased by the closing spring unit so that, in the mounted state of the door closing device, it can be resiliently biased against the fixed frame. According to a first aspect of the invention, the damper comprises a damping arm located rotatably in the housing, biased by at least one elastic return damping element, which, in the mounted state of the door leaf, can to be applied, for the damping of the closing movement of the door leaf at least during a predefined aperture angle of the door leaf, on the fixed frame. According to another aspect of the invention, the damper comprises a support slidably guided in the housing, arranged between the closing spring unit and the closing arm, receiving at least one damping element recall elastic. In this case, the closing arm assumes at the same time the damping arm function.

Description

063 302

01288 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders)

©) National registration number

COURBEVOIE

©) Int Cl ⁸ : E 05 F 3/00 (2017.01)

PATENT INVENTION APPLICATION

A1

©) Date of filing: 08.12.17. © Applicant (s): GEZE GMBH— DE. (30) Priority: 12.12.16 DE 102016224751.4. ©) Inventor (s): WOMER BENJAMIN. ©) Date of public availability of the request: 31.08.18 Bulletin 18/35. ©) List of documents cited in the report preliminary research: The latter was not established on the date of publication of the request. (© References to other national documents ©) Holder (s): GEZE GMBH. related: ©) Extension request (s): @) Agent (s): DENNEMEYER & ASSOCIATES SA.

FR 3 063 302 - A1

154; door closing device.

The present invention relates to a door closing device comprising a housing, a closing arm rotatably placed in the housing, biased by a closing spring unit for the transmission of force between a door leaf and a fixed frame, a damper for damping the closing movement of the door leaf and a means for fixing the door closing device on the door leaf. The fixing means comprise an installation zone provided on the housing, by means of which the door closing device can be installed on a rebate of the door leaf. The closing arm is arranged and urged by the closing spring unit so that, in the assembled state of the door closing device, it can be urged resiliently against the fixed frame. According to a first aspect of the invention, the damper comprises a damping arm located rotatably in the housing, biased by at least one damping element with elastic return, which, in the assembled state of the door leaf, can be applied, for the damping of the closing movement of the door leaf at least during a predefined opening angle of the door leaf, on the fixed frame. According to another aspect of the invention, the shock absorber comprises a support guided so as to be able to slide in the housing, disposed between the closing spring unit and the closing arm, receiving at least one return damping element. elastic. In this case, the closing arm simultaneously assumes the function of a damping arm.

Door closing device

The present invention relates to a door closing device comprising a housing, a closing arm rotatably placed in the housing, biased by a closing spring unit for the transmission of force between a door leaf and a fixed frame, a damper for damping the closing movement of the door leaf and a means of fixing the door closing device on the door leaf. The door leaf may in particular be a rotary leaf. In this document, when referring to a fixed frame, it should be understood that the term also includes a fixed wall or the like.

Door closing devices are generally known and cause the autonomous closing of a door, the movement of the leaf in the doorframe as well as the entry of the bolt of the door lock in the headrest being thus guaranteed.

The assembly time for conventional door closers is relatively long. Residual damage often caused to the leaf and the frame, for example due to fixing holes or the like constitute disadvantages. In private homes, in particular, door closers are only rarely installed, as the high operating force required to open the door on a daily basis is generally troublesome and the space requirement relatively large, as well as the often unsightly design closing devices are perceived as annoying in living spaces.

The object of the invention is to provide a door closing device of the type mentioned at the start, making it possible to eliminate the abovementioned drawbacks. In this context, the assembly time must in particular be minimized, a mon3063302 floor without damage must be guaranteed and the structure of the door closing device should be compact and discreet, ^r so its use can in particular be considered in private homes.

According to the invention, the objective is achieved by a respective door closing device having the features of claim 1 or the features of claim 19. The preferred embodiments of the door closing device according to the invention are apparent from the subclaims, this description and the drawings.

According to a first aspect of the invention, the door closing device comprises a housing, a closing arm rotatably placed on the housing, biased by a closing spring unit for the transmission of force between a door leaf and a frame fixed, a damper for damping the closing movement of the door leaf and a means of fixing the door closing device on the door leaf. The fixing means thus comprise an installation zone provided on the housing, by means of which the door closing device can be installed on a rebate of the door leaf. The closing arm is arranged and urged by the closing spring unit so that, in the assembled state of the door closing device, it can be urged resiliently against the fixed frame. The damper comprises a damping arm located rotatably in the housing, biased by at least one damping element with elastic return, which, in the assembled state of the door leaf, can be applied, for damping the movement closing the door leaf at least during a predefined opening angle of the door leaf on the fixed frame.

Due to this design, not only is assembly time minimized, but damage-free assembly is guaranteed. In addition, the structure of the positive door closing dis3063302 is relatively compact and discreet, so that its use can in particular be envisaged in private homes.

The door closing device, for example, no longer needs to be fixed to the door leaf by screwing. With the installation area provided on the housing, the door closing device can now be easily installed on a rebate of the door leaf. In this context, additional fixing by screwing or the like is certainly possible, but not absolutely necessary. The closing arm no longer needs to be fixedly connected to the frame. According to the invention, it is only biased against the fixed frame or held in abutment thereon in an elastic manner. The damping arm, in the assembled state of the door leaf, for the damping of the closing movement of the door leaf is also only installed on the fixed frame, so that no damage caused by mounting appears .

Suitably, the installation area of the housing has at least in places a U-shaped cross section.

In particular in order to guarantee a secure hold of the door closing device on the door leaf, it is advantageous that the door closing device can be installed, by means of the installation area of the housing, by a tight fit on the door leaf rebate.

According to a suitable practical embodiment of the door closing device according to the invention, the damping element with elastic return of the damper is biased in a horizontal section of the housing in the assembled state of the door closing device and the damping arm of the damper is rotatably placed in this horizontal section of the housing.

The installation area of the housing can advantageously form a right angle, whereby the door closing device can be installed, through this installation area at right angles to the housing, in a corner area in particular upper of the door leaf on a rebate of the door leaf.

The closing spring unit biasing the closing arm may suitably comprise a torsion spring. In this context, such a torsion spring is preferably arranged in a vertical section of the housing in a mounted state of the door closing device.

According to a preferred practical embodiment of the door closing device according to the invention, the damping arm is provided with a toothing, which meshes with a toothing of a support receiving the damping element with return elastic.

In this context, the support receiving the elastic return damping element is appropriately placed so as to be able to slide in the housing and can slide, with a respective rotation of the damping arm, in translation in the housing.

It is also particularly advantageous that the damping element with elastic return is compressed, when the door leaf is closed and when the damping arm is arranged on the fixed frame, by means of the support coupled with the arm d damping to dampen the closing movement of the door leaf.

If the damping arm, when closing the door leaf, touches the fixed frame, the rotational movement of the damping arm is converted, through the teeth, into a stroke of the support receiving the element d cushioning with elastic return. In this context, the at least one elastic pelting damping element is compressed, whereby the closing movement of the door leaf is braked or damped. Depending on the length of the damper arm, the door leaf is braked sooner or later.

According to an appropriate practical embodiment of the door closing device according to the invention, the damping element with elastic return is disposed between the support and a wall of the housing. The housing wall concerned may for example be provided in the region of the closing arm. In this case, the damping of the closing movement of the door leaf can be obtained by compression of the damping element with elastic return, for example in that the damping arm presses the support on the teeth in the direction of closing arm.

According to an advantageous alternative embodiment of the door closing device according to the invention, the damping element with elastic return can however also be arranged between the support and a stop provided in or on the housing. In this case, the damping of the closing movement of the door leaf can be brought about by compression of the damping element with elastic return, for example in that the damping arm pulls the support on the teeth in the direction of closing arm.

A respective elastic return damping element may advantageously comprise a damping cylinder with a return spring.

At rest, that is to say when the door leaf is open, such a damping cylinder can in particular be removed.

According to another suitable practical embodiment of the door closing device according to the invention, the closing spring unit biasing the closing arm comprises a pressure spring.

Preferably, this pressure spring is disposed between a guided recess so as to be able to slide in the housing and urging the closing arm and a stop provided in the housing.

It is also particularly advantageous that the pressure spring and the recess associated therewith are housed in a horizontal section of the housing in the assembled state of the door closing device.

It is thus possible to envisage, in this context, such embodiments of the door closing device according to the invention, in which the at least one damping element with elastic return of the damper is placed in a section horizontal of the housing in the assembled state of the door closing device and that the damping arm of the damper is rotatably mounted in this horizontal section of the housing and in which the spring and pressure and the recess associated therewith are also mounted in this horizontal section of the housing in the assembled state of the door closing device. On the other hand, the closing arm is preferably rotatably arranged in a vertical section of the housing in an assembled state of the door closing device. In principle, however, it is possible to envisage such embodiments of the door closing device, in which the housing comprises only a horizontal section in the assembled state of the closing device and, correspondingly, all the components of the door closing device are arranged or placed rotatable in this horizontal section of the housing.

The maximum output travel of the elastic return damping element is preferably adjustable by means of adjustment such as in particular an adjustment screw or the like. As, correspondingly, the exit angle of the damping arm is also adjustable, the opening angle of the door leaf can be adjusted, at which level the damping arm comes into contact with the frame fixes and thus sets up depreciation.

According to another suitable embodiment of the door closing device according to the invention, the end oriented towards the door leaf of the fixing arm is provided with a felt, a roller or the like. Thus, it is possible to avoid in a simple way the damage caused to the fixed leaf, for example scratches or the like.

According to another aspect of the invention, the door closing device comprises a housing, a closing arm rotatably placed on the housing, biased by a closing spring unit for the transmission of force between a door leaf and a frame fixed, a damper for damping the closing movement of the door leaf and a means of fixing the door closing device on the door leaf. The fixing means thus comprise an installation zone provided on the housing, by means of which the door closing device can be installed on a rebate. The closing arm is arranged and urged by the closing spring unit so that, in the assembled state of the door closing device, it can be urged resiliently against the fixed frame. The damper comprises a support guided so as to be able to slide in the housing, arranged between the closing spring unit and the closing arm, receiving at least one damping element with elastic return.

The support receiving the elastic return damping element is preferably provided with a toothing which meshes with a toothing of the closing arm.

According to an appropriate practical embodiment of the door closing device according to the second aspect of the invention, the damping element with elastic return received in the support is supported on one side in the support and on the other side on the housing.

The closing arm of the door closing device according to the second aspect of the invention thus also serves as a damping arm. Furthermore, this door closing device according to the second aspect of the invention is produced at least essentially like the door closing device according to the first aspect of the invention.

The invention is explained in more detail below, with the aid of exemplary embodiments, with reference to the drawings; on which ones,

figure 1 is a schematic representation of an embodiment copy of a door closing device installed on a door leaf according to the first aspect of the invention, with a closing spring unit comprising a torsion spring, figure 2 is an enlarged schematic representation in perspective the door closing device according to FIG. 1, figure 3 is another schematic perspective representation of the door closing device according to FIG. 1 according to a another angle of view, figure 4 is a schematic top view partially in section of the door closing device according to FIG. 1, in which the door leaf is not as open, so that the damping arm is not yet in taken with the fixed frame,

FIG. 5 is a schematic top view partially in section of the door closing device according to FIG. 1, in which the door leaf is already closed to such an extent that the damping arm is engaged with the fixed frame and that the closing movement of the door leaf is thus damped, Figure 6 is a schematic top view partially in section of the door closing device according to Figure 1, in which the door leaf is fully closed, Figure 7 is a schematic top view partially in section of a door closing device comparable to the door closing device according to FIG. 1, in which the positive door closing device is also provided with an adjustment means making it possible to adjust the maximum output stroke of the damping elements, FIG. 8 is a schematic top view partially in section of another exemplary embodiment of a device e door closure installed on a door leaf according to the first aspect of the invention, in which the damping elements are located between the allocated support and a stop provided in or on the housing, Figure 9 is a top view schematic partially in section of another exemplary embodiment of a door closing device installed on a door leaf according to the first aspect of the invention, with a spring unit

10 figure 10 closure including a torsion spring when the door leaf is closed, is a schematic top view partially in section the door closing device according to FIG. 9, in which the door leaf is open, figure 11 is a schematic representation of an embodiment copy of a door closing device installed on a door leaf according to the second aspect of the invention, comprising a shock absorber, the support of which receives the damping elements is located between the spring unit and the closing arm, in which the door closing device is shown when the leaf door is closed and figure 12 is a schematic representation of the door closing device according to FIG. 11 when the door leaf is open.

Figures 1 to 10 show different examples of embodiments of a door closing device 10 according to the first aspect of the invention.

In this context, the door closing device 10 respectively comprises a housing 12, a closing arm 16 rotatably placed in the housing 12, biased by a closing spring unit 14 for the transmission of force between a door leaf 18 and a fixed frame 20, a damper 22 for damping the closing movement of the door leaf 18 and a means 24 for fixing the door closing device 10 on the door leaf 18.

The fixing means 24 respectively comprise an installation zone 26 provided on the housing 12, by means of which the door closing device 10 can be installed on a rebate 28 of the door leaf 18.

The closing arm 16 is respectively arranged and urged by the closing spring unit 14 so that, in the assembled state of the door closing device 10, it can be urged resiliently against the fixed frame 20.

The damper 22 respectively comprises a damping arm 32 rotatable in the housing 12, urged by at least one damping element 30 with elastic return, which, in the assembled state of the door leaf 18, can be applied, for damping the closing movement of the door leaf 18, at least during a predefined opening angle of the door leaf 18, on the fixed frame 20. In the present case, the damping arm 32 is example respectively requested by two damping elements 30 of the damper 22.

As can be seen in particular in FIGS. 2 and 3, the installation area 26 of the housing 12 can have a U-shaped cross section, at least in places, respectively. In this context, the door closing device 10 can be installed through the installation zone 26 of the housing 12, respectively, by tight fitting in particular on the rebate 28 of the door leaf 18.

The damping elements 30 with elastic return of the damper 22 can be respectively placed in a horizontal section 12 ′ of the housing 12 in the assembled state of the door closing device 10. In addition, the damping arm 32 of the damper 22 can be respectively rotatably placed in this horizontal section 12 ′ of the housing (see in particular FIGS. 4 to 10).

As can be seen in particular in Figures 2 to 8, the installation area 26 of the housing 12 can form a right angle, so that the door closing device 10 can be installed, through this area installation 26 at right angles to the housing 12, in a particularly upper corner area of the door leaf 18 on a rebate 28 of the door leaf 18.

In the exemplary embodiments of the door closing device 10 shown in FIGS. 1 to 8, the closing spring unit 14 urging the closing arm 16 respectively comprises a torsion spring 34. In this context, the spring torsion 34 can be arranged respectively in a vertical section 12 of the housing 12 in particular in a mounted state of the door closing device 10.

The damping arm 32 can respectively be provided with a toothing 36, which meshes with a toothing 38 of a support 40 receiving the damping elements 30 with elastic return (see in particular Figures 4 to 10). In this context, the support 40 receiving the damping elements 30 with elastic return is placed respectively so as to be able to slide in the housing 12 and can slide, with a respective rotation of the damping arm 32, in translation in the housing 12 .

The elastic return damping elements 30 are compressed, when the door leaf 18 is closed and when the damping arm 32 is disposed on the fixed frame 20, by means of the support 40 coupled with the damping arm 32 for damping the closing movement of the door leaf 18.

As it is for example possible to see in FIGS. 4 to 7, the damping elements 30 with elastic return can be arranged for example between the support 40 and a wall 42 of the housing 12. In this case, the support 40 is disposed, with the damping elements 30 with elastic return, between the damping arm 3063302 sement 32 and the closing arm 16. When the door leaf 18 is closed, the support 40 is thus pressed, by means of the arm damping 32 in the direction of the closing arm 16, in order to obtain the desired damping. Depending on the length of the damping arm 32, the door leaf 18 is braked sooner or later.

On the other hand, in the embodiment according to FIG. 8, the damping elements 30 with elastic return are arranged between the support 40 and a stop 44 provided in or on the housing 12. In this case, the support 40, when the door leaf 18 closes, is pulled towards the closing arm 16, in order to cause the necessary damping. Furthermore, the damping function is identical to that of the previous exemplary embodiment. By virtue of the aforementioned principle of traction operation, the point of rotation of the damping arm 32 can be shifted closer to the hinge, whereby a greater damping use angle can be achieved with an identical damping arm 32 .

The damping elements 30 with elastic return can respectively comprise, for example, a damping cylinder with a return spring.

In the embodiment of the door closing device 10 shown in FIGS. 9 and 10, the closing spring unit 14 urging the closing arm 16 comprises a pressure spring 46. In this context, this pressure spring 46 is, in the present case, for example, disposed between a recess 48 guided so as to be able to slide in the housing 12 and urging the closing arm 16 and a stop 50 provided in the housing 12. The pressure spring 46 and this recess 48 associated can, as shown, be placed in a horizontal section 12 'of the housing 12 in the assembled state of the door closing device 10.

The maximum output stroke of the damping elements 30 with elastic return can respectively be adjustable by means of adjustment 52 such as in particular an adjustment screw or the like (see in particular FIG. 7), so that it is possible to variably fix the opening angle of the door leaf 18 at which the damping arm 32 comes into contact with the fixed frame 20 and sets up the damping.

The opposite end of the door leaf 18 of the damping arm 32 can respectively be provided with a felt, a roller or the like, in order to avoid damaging the fixed frame 20 for example by scratches or the like.

Figures 11 and 12 show an exemplary embodiment of a door closing device 10 according to the second aspect of the invention.

In this context, this door closing device 10 also comprises a housing 12, a closing arm 16 rotatably placed on the housing 12 and biased by a closing spring unit 14 for the transmission of force between a door leaf 18 and a fixed frame 20 (see also FIGS. 1 to 10), a damper 22 for damping the closing movement of the door closing device 18 and a means 24 for fixing the door closing device 10 to the door leaf 18 (see also in this context once again Figures 1 to 10). In the present case also the fixing means 24 again comprise an installation zone 26 provided on the housing 12, by means of which the door closing device 10 can be installed on a rebate 28 of the door leaf 18. The closing arm 16 is also in the present case arranged and urged by the closing spring unit 14 so that, in the assembled state of the door closing device 10, it can be urged resiliently against the frame fixed 20.

In the present case, contrary to the examples of previous embodiments, the support guided so that it can slide in the housing 12 receiving the damping elements 30 with elastic return is located between the closing spring unit 14 and the arm closing 16. The closing arm 16 thus serves in the present case at the same time as a damping arm.

The support 30 receiving the damping elements 30 with elastic return can, as shown, be provided with a toothing 38 which meshes with a toothing 54 of the closing arm 16.

The elastic return damping elements 30 received in the support 40 can be supported on one side in the support 40 and on the other side on the housing 12 or on a stop 56 provided on the latter.

The closing spring unit 14 may, as shown, include for example a pressure spring.

Furthermore, this door closing device 10 according to the second aspect of the invention is produced at least essentially like the embodiment described above according to the first aspect of the invention.

As mentioned above, the expression used previously "fixed frame" should be interpreted as also including a fixed wall or the like.

FIG. 1 illustrates a door closing device 10 according to the first aspect of the invention, installed on the rebate of a door leaf 18 with a closing spring unit comprising a torsion spring. In FIG. 2, the door closing device 10 according to FIG. 1 is again illustrated in an enlarged representation.

Figure 3 is another schematic perspective representation of the door closure device 10 according to Figure 1 from another angle of view. Here it should be noted how the closing arm 16 transmits the rotary closing moment to the fixed frame 20 (or to a fixed wall).

FIG. 4 illustrates the door closing device 10 according to FIG. 1 in a phase, in which the door leaf 18 is open to such an extent that the damping arm 32 is not yet engaged with the fixed frame 20 (the wall). The torsion spring 34 placed in the vertical section 12 of the housing is tensioned and transmits the closing moment to the closing arm 16. The damping elements 30 with elastic return are in the deployed state of rest, so that the damping arm 32 is extended.

FIG. 5 illustrates the door closing device according to FIG. 1 in a phase, in which the door leaf 18 is already closed to such an extent that the damping arm 32 is engaged with the fixed frame 20 (the wall ) and the closing movement of the door leaf is thus dampened. FIG. 6 illustrates the door closing device 10 according to FIG. 1 in a phase in which the door leaf 18 is completely closed.

If the damping arm 32, when the door is closed, comes into contact with the fixed frame 20 (the wall), the rotary movement of the damping arm 32 is transformed, through the teeth 36, 38, in a stroke of the support 40. Thus, the damping elements 30 with elastic return are pressed together and the door leaf 18 is braked. Depending on the length of the damping arm 32, the door leaf 18 is braked sooner or later. In order to avoid damaging the fixed frame 20 (the wall), a felt, a roller or the like can be provided at the end of the damping arm 32. As indicated above, the damper 22 operates in the present case according to a sort of “operating principle under stress”.

FIG. 7 illustrates a door closing device 10 comparable to the door closing device according to FIG. 1, in which the door closing device is further provided with adjustment means 52 for adjusting the maximum output travel of the damping elements 30. The damping elements 30 with elastic return return to their deployed state of rest, so that the damping arm 32 is extended. The exit stroke of the damping elements 30 can be limited by means of adjustment means 52, so that the door angle, at which the damping arm 32 comes into contact with the fixed frame 20 (the wall) and damping is in place, can be variably adjustable.

FIG. 8 illustrates another exemplary embodiment of a door closing device 10 according to the first aspect of the invention installed on a door leaf 18, in which the damping elements 30 are located between the support 40 associated and a stop 44 provided in or on the housing 12. The damping elements 30 with elastic return are in the deployed state of rest, so that the damping arm 32 is extended. In the present case also, the stroke of the damping elements 30 can again be limited by an adjustment means. This applies to all of the embodiments of the door closing device according to the invention. During the damping of the closing movement of the door leaf 18, in the present case, the recess 40 is pulled towards the closing arm 16. Thanks to this “principle of traction operation”, the point of rotation of the arm damping 32 can be shifted closer to the hinge, whereby a greater damping use angle can be achieved with an identical damping arm 32. Furthermore, the door closing device 10 can be designed at least essentially like the alternative embodiments described above.

FIG. 9 illustrates an exemplary embodiment of a door closing device 10 according to the first aspect of the invention installed on a door leaf 18 with a closing spring unit 14 comprising a pressure spring 46 when the door leaf 18 is closed. FIG. 10 illustrates the door closing device 10 according to FIG. 9 when the door leaf 18 is open.

FIG. 11 illustrates a door closing device 10 according to the second aspect of the invention installed on a door leaf 18, with a damper 22, the support 40 of which receiving the damping elements 30 is located between the closing spring 14 and closing arm 16, in which the door closing device 10 is shown with the door leaf 18 closed.

FIG. 12 illustrates the door closing device 10 according to FIG. 11 when the leaf is open. As can be seen in Figures 11 and 12, the closing spring unit 14 may include, in this case, for example, a pressure spring.

Furthermore, the door closing devices 10 represented in FIGS. 11 and 12 are produced at least essentially like those described in association with the abovementioned exemplary embodiments according to the first aspect of the invention.

List of reference signs door closing device housing horizontal section of the housing vertical section of the housing closing spring unit closing arm

Door leaf fixed frame (wall) shock absorber fixing means installation area rebate damping element damping arm torsion spring toothing teeth support housing wall stop pressure spring recess stop stop adjustment means stop stop

Claims (16)

Claims Door closing device (10) comprising a housing (12), a closing arm (16) rotatably placed in the housing (12) biased by a closing spring unit (14) for the transmission of force between a leaf door (18) and a fixed frame (20), a damper (22) for damping the closing movement of the door leaf (18) and means (24) for fixing the door closing device (10) on the door leaf (18), the fixing means (24) comprising an installation zone (26) provided on the housing (12), by means of which the door closing device (10) can be installed on a rebate (28) of the door leaf (18), the locking arm (16) being arranged and urged by the closing spring unit (14) so that, in the assembled state of the door closing device ( 10), it can be resiliently biased against the fixed frame (20) and the damper (22) comprising a damping arm. ent (32) rotatably placed in the housing (12), urged by at least one damping element (30) with elastic return, which arm, in the mounted state of the door leaf (18), can be applied, to damping the closing movement of the door leaf (18) at least during a predefined opening angle of the door leaf (18) on the fixed frame (20). Door closing device according to claim 1, characterized in that the installation area (26) of the housing (12) has at least in places a U-shaped cross section. 3. Door closing device according to claim 1 or 2, characterized in that the door closing device (10) can be installed through the installation area (26) of the housing (12) by an adjustment tight on the rebate (28) of the door leaf (18). 4. Door closing device according to at least one of the preceding claims, characterized in that the damping element (30) with elastic return of the damper (22) is housed in a horizontal section (12 ') 10 of the housing (12) in the assembled state of the door closing device (10) and the damping arm (32) of the damper (22) is rotatably placed in this horizontal section (12 ’) of the housing. 5. Door closing device according to at least one of claims 15 above, characterized in that the installation area (26) of the housing (12) extends at a right angle and the door closing device (10) can be installed through this area installation at right angles (26) of the housing (12) in a corner area of the door leaf (18) on a 20 rebate (28) of the door leaf (18). 6. Door closing device according to at least one of the preceding claims, characterized in that the closing spring unit (14) urging The closing arm (16) comprises a torsion spring (34). 7. Door closing device according to claim 6, characterized in that the torsion spring (34) is arranged in a vertical section (12) of the housing (12) in a mounted state of the device Door closing 30 (10). 8. Door closing device according to at least one of the preceding claims, 5 characterized in that the damping arm (32) is provided with a toothing (36), which meshes with a toothing (38) of a support (40) receiving the damping element (30) with elastic return. 9. door closing device according to claim 8, 10 characterized in that the support (40) receiving the damping element (30) with elastic return is guided so as to be able to slide in the housing (12) and can slide, with a respective rotation of the damping arm ( 32) in translation in the housing (12). 15 10. Door closing device according to claim 9, characterized in that the damping element (30) with elastic return is compressed, when the door leaf is closed (18) and when the damping arm (32) is arranged on the fixed frame (20), by means of the support (40) coupled with the damping arm (32) for 20 damping the closing movement of the door leaf (18). 11. Door closing device according to claim 10, characterized in that the damping element (30) with elastic return is disposed between the support (40) and a wall (42) of the housing (12). 12. Door closing device according to claim 10, characterized in that the damping element (30) with elastic return is disposed between the support (40) and a stop (44) provided in or on the housing (12 ). 13. Door closing device according to at least one of the preceding claims, characterized in that the damping element (30) with elastic return comprises a damping cylinder with a rap5 pel spring. 14. Door closing device according to at least one of the preceding claims, characterized in that the closing spring unit (14) urging 10 the closing arm (16) comprises a pressure spring (46). 15. Door closing device according to claim 14, characterized in that the pressure spring (46) is disposed between a recess (48) guided so as to be able to slide in the housing (12) 15 and urging the closing arm (16) and a stop (50) provided in the housing (12). 16. Door closing device according to claim 15, characterized in that the pressure spring (46) and the recess (ment) associated therewith, are housed in a horizontal section (12 ') of the housing (12 ) in the assembled state of the door closing device (10). 17. Door closing device according to at least one of the preceding claims, 25 characterized in that the maximum output stroke of the damping element (30) with elastic return is adjustable by means of the adjusting means (52) like in particular an adjusting screw or the like. Door closing device according to at least one of the preceding claims, characterized in that the end of the damping arm (32) facing the door leaf (18) is provided with a felt, a roller or the like. Door closing device (10) comprising a housing (12), a closing arm (16) rotatably placed in the housing (12) biased by a closing spring unit (14) for the transmission of force between a leaf door (18) and a fixed frame (20), a damper (22) for damping the closing movement of the door leaf (18) and means (24) for fixing the door closing device (10) on the door leaf (18), the fixing means (24) comprising an installation zone (26) provided on the housing (12), by means of which the door closing device (10) can be installed on a rebate (28) of the door leaf (18), the locking arm (16) being arranged and urged by the closing spring unit (14) so that, in the assembled state of the door closing device ( 10), it can be resiliently biased against the fixed frame (20) and the damper (22) comprising a support (40) guid é so as to be able to slide in the housing (12), arranged between the closing spring unit (14) and the closing arm (16), housing at least one damping element (30) with elastic return. Door closing device according to claim 19, characterized in that the support (40) receiving the damping element (30) with elastic return is provided with a toothing (38) which meshes with a toothing (54 ) of the closing arm (16). Door closing device according to claim 19 or 20, characterized in that the damping element (30) received in the support (40) with elastic return is supported on one side in the support (40) and l 'other side at the housing (12). 12 ’22 12 24.26