GB2561063A

GB2561063A - Drive for a door leaf or window leaf

Info

Publication number: GB2561063A
Application number: GB1801820.0A
Authority: GB
Inventors: Worner Benjamin
Original assignee: Geze GmbH
Current assignee: Geze GmbH
Priority date: 2017-02-06
Filing date: 2018-02-05
Publication date: 2018-10-03
Also published as: DE102017201809B4; GB201801820D0; DE102017201809A1

Abstract

A drive for a leaf of a door, a window, e.g. fire protection door, comprises a housing 14, and therein a device, e.g. a hydraulic damping device, comprising a medium which may be flammable, and a fastening device 20 for fastening the housing to a door or frame. The fastening device comprises at least one fastening element, which has low heat conductivity for thermally decoupling the housing from the leaf and/or frame and is dimensioned in such that a gap of a distance d remains between the housing and the leaf and/or frame. Preferably the fastening device comprises a dovetail shaped mounting bracket slidingly received within a dovetail shaped groove in the housing. The mounting bracket may have a lower melting point than the housing and the bracket may be formed of plastics secured by countersunk screws which locate in the groove to retain the housing even if the bracket melts.

Description

(58) Field of Search:

INT CL E05F

Other: EPODOC, WPI, Patents Fulltext (71) Applicant(s):

Geze GmbH (Incorporated in the Federal Republic of Germany) Reinhold-Voster-StraBe 21-29, Leonberg DE-71229, Germany (72) Inventor(s):

Benjamin Worner (74) Agent and/or Address for Service:

Dennemeyer & Associates S. A. Landaubogen 1-3, 81373 Munich, Germany (54) Title of the Invention: Drive for a door leaf or window leaf Abstract Title: Door closer (57) A drive for a leaf of a door, a window, e.g. fire protection door, comprises a housing 14, and therein a device, e.g. a hydraulic damping device, comprising a medium which may be flammable, and a fastening device 20 for fastening the housing to a door or frame. The fastening device comprises at least one fastening element, which has low heat conductivity for thermally decoupling the housing from the leaf and/or frame and is dimensioned in such that a gap of a distance ‘d’ remains between the housing and the leaf and/or frame. Preferably the fastening device comprises a dovetail shaped mounting bracket slidingly received within a dovetail shaped groove in the housing. The mounting bracket may have a lower melting point than the housing and the bracket may be formed of plastics secured by countersunk screws which locate in the groove to retain the housing even if the bracket melts.

1/1

Fig. 3

DRIVE FOR A DOOR LEAF OR WINDOW LEAF

The invention relates to a drive for a leaf of a door, a window or the like, in particular for the leaf of a fire door or fire protection door, with a housing, and therein a device, in particular a hydraulic damping device, comprising a medium, and a fastening device for fastening the housing to the leaf or a stationary frame.

Drives for doors or windows are well known and can be designed as manual or automatic drives. In a known manner, such a drive comprises a housing with a bore in which a working piston or a heart-shaped cam are arranged, which interact with an output shaft in the manner of a gear. A linkage or a sliding arm can be arranged non-rotatably on the output shaft. The drive can optionally be arranged on a leaf of the door or the window or on the frame. Accordingly, the linkage or the sliding arm is supported on the frame or the leaf, bringing about a connection between the pivotal movement of the leaf and the drive. In particular, in hydraulic drives with a hydraulic damping device, the housing is usually filled with a damping medium, particularly oil.

The object of the invention is to improve, as simply and accordingly inexpensively as possible, on the fact that a medium contained in the drive can ignite as a result of the temperatures in the event of a fire.

The object is achieved according to the invention by a drive with the features of claim 1. Preferred embodiments of the drive according to the invention will become apparent from the dependent claims, the present description and the drawings.

The drive according to the invention for a leaf of a door, a window or the like, which may in particular be a drive for the leaf of a fire door or fire protection door, comprises a housing, and therein a device comprising a medium, particularly a hydraulic damping device, and a fastening device for fastening the housing to the leaf or a stationary frame At the same time, the fastening device comprises at least one fastening element, which has low thermal conductivity for thermally decoupling the housing from the leaf and/or frame and is dimensioned in such a way that in the assembled state a distance remains between the housing and the leaf and/or frame.

Since the fastening element for thermally decoupling the housing from the leaf and/or frame not only has low thermal conductivity but is also dimensioned such that a distance remains between the housing and the leaf and/or frame in the assembled state, the drive housing is thermally decoupled from the leaf and/or the frame, whereby in a fire the temperature increase in the drive mounted on the side remote from the fire is slowed down. As a rule, additional fire protection devices such as volume compensation elements and the like can be omitted. In addition, a corresponding drive can be classified in higher fire protection categories.

According to a preferred practical embodiment of the drive according to the invention, the fastening element is insertable with a particularly profiled portion with a positive lock into a receptacle in the housing, which may also be complementary, and is fixable via at least one screw or the like to the leaf and/or frame. A respective screw does not therefore have to engage with the housing.

Advantageously, the screw head is recessed in the fastening element after mounting. Heat transfer via the screws is thus ruled out, such that any desired screws can be used to fix the fastening element to the leaf and/or frame.

The fastening element preferably comprises a portion adjoining the particularly profiled portion which extends outwards from the housing when the particularly profiled portion is inserted into the receptacle in the housing and via which the fastening element is supported on the leaf and/or the frame in the assembled state.

It is particularly advantageous if a respective fastening element with a portion which is generally dovetail-shaped in cross-section can be inserted into a complementary receptacle in the housing.

According to a preferred practical embodiment of the drive according to the invention, the fastening element with its particularly profiled or dovetail-shaped portion can be inserted into the complementary receptacle in the housing.

Thus, in particular, the fastening element can be initially fixed to the leaf and/or frame and subsequently the housing with the receptacle provided therein can be slid onto the particularly profiled and/or dovetail-shaped portion of the fastening element.

Appropriately, in the assembled state, the fastening element inserted or pushed with its particularly profiled and/or dovetailed portion into the complementary receptacle in the housing is fixed relative to the housing by a press fit or the like. No additional means are therefore required to fix the housing relative to the fastening element. The screws or the like are provided exclusively for fixing the at least one fastening element to the leaf and/or frame and do not engage with the drive housing, provided that the at least one fastening element does not melt. Accordingly, there is also no thermal bridge produced between the leaf and/or frame and the housing by way of the screws.

Advantageously, the respective fastening element can be fixed to the leaf and/or frame via at least two screws or the like which are spaced apart from one another, especially perpendicularly to the longitudinal direction of the housing. As a result, more stable mounting of the housing on the leaf and/or frame is ensured overall.

Because the drive housing is thermally decoupled from the leaf and/or frame by the at least one fastening element, the housing can be made of any desired material. In this case, the fastening element has lower thermal conductivity than the housing.

The melting point of the fastening element may be below that of the housing, such that it melts before the housing, but the housing is nonetheless held on the leaf by the screws, which continue to be held in the fastening device in particular in the complementary receptacle, and advantageously does not fall down.

The fastening element may, for example, consist at least in part of plastics material. In principle, however, any other desired materials of low thermal conductivity are conceivable for a respective fastening element.

As the screws for fixing a respective fastening element to the leaf and/or frame are not/do not have to be in contact with the housing, screws of any desired kind can be used. For example, a respective fastening element can be fixable to the leaf and/or frame via at least one wood or metal screw. Wood screws are usually slightly conical and are mainly screwed into wood. There is no specially adapted mating thread. Metal screws are usually cylindrical and are screwed into a mating thread, which can be located in the leaf and/or frame. Both wood and metal screws may consist of metal such as for example steel, brass or indeed copper or the like. In principle, however, screws made from plastics material also are conceivable.

It is also particularly advantageous if a respective fastening element can be fixed to the leaf and/or frame via at least one countersunk screw, particularly one provided with a socket for a tool. In particular, a countersunk countersunk screw again ensures that the screw does not come into contact with the housing, thus ruling out the formation of a thermal bridge via the screw.

According to a further advantageous practical embodiment of the drive according to the invention, the fastening element can be fixed via at least one cap screw to the leaf and/or frame.

In this case, a respective cap screw is preferably positioned and its head dimensioned and/or adapted to the respective receptacle in the housing in such a way that the housing cannot fall off the leaf and/or frame even if the respective fastening element melts. If the fastening element melts as a result of excessive heat development, the housing is still held on the leaf and/or frame by the fastening element now engaging with the receptacle in the housing. A fire door can thus be kept at least temporarily closed by the drive, whereby the risk of the fire spreading is reduced accordingly.

Advantageously, a plurality of fastening elements are provided over the length of the housing.

In particular, the output shaft may be couplable, in particular non-rotatably, with a lever assembly serving to transmit force. Coupling via a linkage or a sliding arm guided in a sliding rail is in this respect particularly conceivable. If a sliding arm guided in a sliding rail is provided, the sliding rail can also in particular be fixed similarly to the drive housing for thermal decoupling via at least one fastening element with low thermal conductivity to the frame and/or leaf.

The invention will be explained in more detail below on the basis of an exemplary embodiment and making reference to the drawings, in which:

Fig. 1 is a schematic representation of an exemplary embodiment of a drive according to the invention for a leaf of a door,a window or the like, wherein the drive is shown in the assembled state,

Fig. 2 is a schematic perspective representation of an exemplary fastening element of the drive according to Fig. 1, provided with screws.

Fig. 3 is a schematic representation of the drive according to Fig. 1 with a melted fastening element.

Figures 1 to 3 show an exemplary embodiment of a drive 10 according to the invention for a leaf 12 of a door, a window or the like. By way of example, this drive 10 embodied as a door closer may in particular be used for the leaf 12 of a fire door or fire protection door.

The drive comprises a housing 14, an output shaft 16 mounted rotatably in the housing 14 and interacting with the piston, a device, especially a hydraulic damping device, holding a fluid, particularly oil, and a fastening device 18 for fastening the housing 14 to the leaf 12 or a stationary frame.

The fastening device 18 comprises at least one fastening element 20, which has low thermal conductivity for thermally decoupling the housing 14 from the leaf 12 and/or frame and is dimensioned in such a way that, in the assembled state, a distance d remains between the housing 14 and the leaf 12 and/or frame. In the present case, the housing 14 is fastened via the fastening device 18 for example to the leaf 12.

The respective fastening element 20 may be insertable with a particularly profiled portion 24 (cf. Fig. 2) with a positive lock into a complementary receptacle 26 in the housing 14 and fixed to the leaf 12 and/or frame via at least one screw 28 or the like (cf. in particular Figs. 1 and 3).

In addition, the fastening element 20 may comprise a portion 22 (cf. in particular Fig. 2) adjoining the particularly profiled portion 24 which extends outward from the housing 14 when the particularly profiled portion 24 is inserted into the complementary receptacle 26 in the housing 14 and via which the fastening element 20, in the assembled state, is supported on the leaf 12 and/or the frame.

As shown, the fastening element 20 can for example be inserted with a crosssectionally generally dovetail-shaped portion 24 into a complementary receptacle 26 in the housing 14. In the present case, the fastening element 20 with its particularly profiled and/or dovetailed portion 24 can be inserted into the complementary receptacle 26 in the housing 14.

The fastening element 20 inserted or pushed with its profiled and/or dovetailshaped portion 24 into the complementary receptacle 26 in the housing 14 can, in the assembled state, be fixed relative to the housing 14, for example by means of a press fit or the like. In this case, additional fasteners for fixing the fastening element in the housing are not required. In principle, different fixing of the fastening element 20 in the housing 14 is however also conceivable.

As shown, the fastening element 20 can be fixed to the leaf 12 and/or frame via at least two screws 28 or the like which are spaced apart from one another, especially perpendicularly to the longitudinal direction of the housing 14. In the present case, two such screws 28 are associated with the fastening element 20.

Because the fastening element 20 has low thermal conductivity and is dimensioned in such a way that, in the assembled state, a distance d remains between the housing 14 and the leaf 12 and/or frame, in the assembled state the housing 14 is thermally decoupled from the leaf 12 and/or frame by the fastening device 18 and/or the at least one fastening element 20. The housing 14 can thus consist of any desired material. In this case, the fastening element 20 may have a lower thermal conductivity than the housing 14.

The melting point of the fastening element 20 may be below that of the housing 14, such that it melts before the housing 14, the housing 14 nonetheless being held on the leaf 12, and not falling off, by the screws 28, which continue to be held in the fastening device 18, particularly in the complementary receptacle 26.

The fastening element may consist at least in part of plastics material. In principle, however, any other desired materials with low thermal conductivity are conceivable for such a fastening element.

As the screws 28 only serve to fix the fastening element 20 to the leaf 12 and/or the frame and do not engage with the housing 14, these screws 28 can be made of any desired material. Thus, a respective fastening element 20 can be fixed to the leaf 12 and/or frame, for example via at least one wood or metal screw 28.

As shown, the fastening element 20 can be fixable to the leaf 12 and/or frame via at least one countersunk screw 28, particularly provided with a socket for a tool. A respective screw 28 countersunk into the respective fastening element 20 ensures that the screw 28 does not come into contact with the housing 14, so avoiding a thermal bridge via the screws 28.

As shown, the fastening element 20 can be fixable to the leaf 12 and/or frame via at least one cap screw 28. In this case, the cap screw 28 can be positioned and its head dimensioned and/or adapted to the respective receptacle 26 in the housing 14 in such a way that the housing 14 cannot fall off the leaf 12 or frame even on melting of the fastening element 20 (cf. in particular Fig. 3).

In particular, it is possible to provide a plurality of fastening elements 20 distributed over the length of the housing 14.

The output shaft 18 may be couplable non-rotatably with a lever assembly serving to transmit force. In this case, the output shaft can, for example, be coupled nonrotatably with a sliding arm guided in a sliding rail or a linkage. In the case of a sliding arm guided in a sliding rail, the sliding rail can, similarly to the housing 14, be fastened via a fastening device comprising at least one fastening element 20 with associated screws 28 to the frame and/or leaf 12 in order also to thermally decouple the sliding rail from the frame and/or leaf.

Fig. 1 shows the drive 10 in the assembled state with intact, i.e. unmelted fastening elements 20. Fig. 2 shows a single fastening element 20 of the drive 10 with associated screws 28 countersunk therein.

Fig. 3 shows the drive 10 with melted fastening elements 20. As shown, by appropriate positioning of the cap screws 28 and appropriate dimensioning and/or adaptation of the screw heads to the respective receptacle 26 in the housing 14, the housing 14 is still held by the screws 28 in such a way that it cannot fall from the leaf 12 and/or the frame even when the fastening element has melted.

In a simple and correspondingly cost-effective manner, the embodiment according to the invention ensures that flammable medium contained in the drive 10 does not ignite in case of fire and/or the increase in temperature in the drive 10 in case of fire is slowed down. Because a respective fastening element 20 not only has low thermal conductivity but is also dimensioned in such a way that, in the assembled state, a distance d remains between the housing 14 and the leaf 12 and/or frame, the drive 10 and/or its housing 14 is/are optimally thermally decoupled from the leaf 12 and/or frame.

List of reference signs

Drive

Leaf

Housing

Output shaft

Fastening device

Fastening element

Portion

Profiled portion, dovetail-shaped portion

Complementary receptacle

Screw

Distance

Claims

Claims

1. 5
2. 15

20
3.
4.

A drive (10) for a leaf (12) of a door, a window or the like, in particular for the leaf (12) of a fire door or fire protection door, with a housing (14), and therein a device, in particular a hydraulic damping device, comprising a medium, and a fastening device (18) for fastening the housing (14) to the leaf (12) or a stationary frame, wherein the fastening device (18) comprises at least one fastening element (20) which has low heat conductivity for thermally decoupling the housing (14) from the leaf (12) and/or frame and is dimensioned in such a way that, in the assembled state, a distance (d) remains between the housing (14) and the leaf (12) and/or frame.

The drive according to claim 1, characterised in t h a t the respective fastening element (20) is insertable with a particularly profiled portion (24) with a positive lock into a receptacle (26) in the housing (14) and is fixable via at least one screw (28) or the like to the leaf (12) and/or frame.

The drive according to claim 2, characterised in t h a t the respective fastening element (20) preferably comprises a portion (22) adjoining the particularly profiled portion (24) which extends outwards from the housing (14) when the particularly profiled portion (24) is inserted into the complementary receptacle (26) in the housing (14) and via which the fastening element (20), in the assembled state, is supported on the leaf (12) and/or the frame.

The drive according to claim 2 or 3, characterised in t h a t the respective fastening element (20) with a portion (24) which is generally dovetail-shaped in a cross-section can be inserted into a complementary receptacle (26) in the housing (14).
5 5. The drive according to at least one of preceding claims 2 to 4, characterised in t h a t the respective fastening element (20) can be inserted with its particular profiled or dovetail-shaped portion (24) into the complementary receptacle (26) in the housing (14).

10
6. The drive according to at least one of preceding claims 2 to 4, characterised in t h a t , in the assembled state, the respective fastening element (20) inserted or pushed with its particularly profiled and/or dovetailed portion (24) into the complementary receptacle (26) in the housing (14) is fixed relative to the housing (14) by a press fit or the like.
7. The drive according to at least one of the preceding claims, characterised in t h a t the respective fastening element (20) can be fixed to the leaf (12) and/or frame via at least two screws (28) or the like which are spaced apart from one another, especially perpendicularly to the

20 longitudinal direction of the housing (14).
8. The drive according to at least one of the preceding claims, characterised in t h a t the respective fastening element (20) has a lower melting point than the housing (14).
9. The drive according to at least one of the preceding claims, characterised in t h a t the respective fastening element (20) consists at least in part of plastics material.

30 10. The drive according to at least one of the preceding claims, characterised in t h a t the respective fastening element (20) is fixable to the leaf and/or frame via at least one wood or metal screw (28).

11. The drive according to at least one of the preceding claims,

5 characterised in t h a t the respective fastening element (20) is fixed to the leaf (12) and/or frame via at least one countersunk screw (28), particularly one provided with a socket for a tool.

12. The drive according to at least one of the preceding claims,
10 characterised in that the respective fastening element (20) can be fixed via at least one cap screw (28) to the leaf (12) and/or frame.
13. The drive according to claim 12, characterised in t h a t the respective cap screw (28) is positioned
15 and its head is dimensioned and/or adapted to the respective receptacle (26) in the housing (14) in such a way that the housing (14) cannot fall off the leaf (12) and/or frame even on melting of a respective fastening element (20).
20 14. The drive according to at least one of the preceding claims, characterised in t h a t a plurality of fastening elements (20) are provided over the length of the housing (14).

15. The drive according to at least one of the preceding claims,
25 characterised in that the output shaft (18) is couplable nonrotatably with a lever assembly serving to transmit force.

Intellectual

Property

Office

Application No: GB1801820.0 Examiner: Ben Munns