EP1431494B1 - Drive for a wing of a door or window - Google Patents

Abstract

Drive for a leaf of a door or a window comprises a housing (2) with a receiving chamber for supporting the drive. The housing has a dimensionally stabilizing insert (7'). The required housing wall thickness is formed at least in sections by an inner and outer cover layer of plastic (11) on the insert. An Independent claim is also included for an alternative drive. Preferred Features: The insert is made in one piece. The insert is made from metal as a stamped/bent component or by an inner high pressure forming process, or from plastic by injection molding or casting.

Description

The invention relates to a drive for a wing of a door or a window according to the preamble of claim 1 and claim 16.

From the CH 281 690 For example, a door closer is known which has a housing filled with a liquid. The housing may consist of an oil-tight plastic and is guided via a dovetail-shaped fastening part on a mounting plate to be fastened to the door displaceable and lockable by screws.

In this construction, it is disadvantageous that the plastic housing has high wall thicknesses in order to support the forces occurring at and in the door closer can. As a result, a dimensionally accurate production is made more difficult with non-cutting methods, since plastics, for example, shrink when they are manufactured by injection molding on cooling.

It is also disadvantageous that plastics can flow away with a force in the event of continuous application, as a result of which the dimensions of the housing change.

In an arrangement of the door closer to a fire door, the plastic housing of the door closer would melt in case of fire due to the effect of heat and the door closer could not hold the door.

From the DE 298 22 099 a door closer is known with a Hubkurvenscheibe which is connected to an emerging from a filled with a damping medium housing drive shaft. The Hubkurvenscheibe is seen in the axial direction on each side of a pinch roller and is in operative engagement with a piston acted upon by a closing spring. The piston and the housing are made of an oil-tight plastic, wherein the piston is a socket or having a piston ring of a different material. The piston enclosing bore may also have a bush made of a different material.

The disadvantage is that properties of plastics, such as their sliding properties, can not be used because the piston to increase the life of a bush or a piston ring of a material other than plastic encloses, and the piston receiving space is also made of a different material. Due to the large material thicknesses of the plastic in the piston and the housing large shrinkage, which adversely affect the dimensional accuracy and thus the accuracy of fit of the piston and housing.

In the arrangement of the door closer to a fire door continues to have the disadvantage that the mechanical fastening in the plastic of the door closer can be destroyed by the heat and a guard locking of the door by the door closer is then no longer given.

The WO 95/20090 A shows a door closer with a guided in a door closer housing and a closing mechanism with a rotatable closer shaft when opening the associated door leaf against a restoring force sliding lock piston. The closer shaft is connected to a arranged between the door and the fixed door frame actuator for power transmission between the door leaf and the door frame and a in the door closer housing with the closing piston in the same direction shifted damping piston, which consists of plastic, wherein a non-forming toothing insert made of metal between the Closing and the damping piston is provided.

From the DE 200 10 423 U1 a door closer is known, with a door closer housing and a guided therein and displaceable by means of a door closer gear Piston assembly, which has a closing piston, one of which in the direction of displacement spaced damping piston and arranged between the closing and the damping piston piston intermediate piece with a transmission element of the door closer transmission and a support member for this purpose. The closing and the damping piston is made of plastic and the non-forming, designed as a toothed insert piston intermediate piece is made of metal and embedded in the end closing and the damping piston.

The invention has for its object to provide a cost-effective drive for the wing of a door or a window using plastic, with a housing and / or a piston, which are dimensionally stable and stable.

The object is solved by the features of claim 1 and claim 16.

The subclaims form advantageous embodiments of the invention.

An inventive drive can be designed as an automatic drive for doors or windows. The drive can also be a manual window operator or a floor or overhead door closer.

For example, overhead door closers are connected via a linkage to the wing of the door closer associated door. This linkage transmits the rotational movement of the wing to a shaft in the door closer, which shifts, for example via a toothing or a Hubkurvenscheibe a acted upon by a spring piston. This displacement movement takes place within a hydraulic fluid in the housing, wherein the hydraulic fluid can flow from one side of the piston to the other side by overflow and valves. Throttle valves are usually arranged in the overflow channels, with which the behavior of the door closer can be adjusted. Opening the sash moves the piston in the door closer so that the spring is tensioned. By relaxing the spring, the piston is moved back and the shaft is rotated back, whereby the wing is guided over the linkage in its closed position. The forces occurring must be supported by the housing and the piston.

In order to absorb the forces acting on a drive with a trained using plastic housing forces and to be able to use the favorable properties of the plastic, such as the frictional properties, an insert is used, which is at least partially coated with plastic, for example by an injection molding process , The insert is shaped to stiffen all required areas of the drive housing. In this case, a dome is formed on both sides in the region of the closer shaft, which can support the bearing of the shaft. On the side opposite the piston of the spring bent projections are provided on the insert, which can support the spring force of the tensioned spring. Embossing or beading can further stiffen the insert. At the insert it is also provided that fastening tabs are formed, which allow to secure the drive to the door or in a bottom housing. The attachment tabs can be encapsulated with plastic or kept free. It is also advantageous that, for example, threads can be present in the insert for attachment, which has a higher strength than threads in the insert Plastic have. According to the invention the insert is provided with recesses, which favor a flow around plastic.

The piston of the drive is also manufactured using an insert, whereby a housing adapted piston can be formed. In the insert part, the teeth for the closer shaft can be formed with or inserted into the insert part of the piston and fixed thereto. Also, recordings may be provided for valves. Possible ribbing and recesses may favor the application of plastic and increase the strength of the insert.

By using an insert for the piston and the housing, the material thickness of the plastic can be kept small without losing the advantages of the plastic. The housing dimensions can thus also be kept very small, with different housing shapes, in particular in the piston chamber can be formed, which allow a small size of the door closer. In this case, the piston chamber deviating from the usual round shape may be rectangular or polygonal, whereby a rotation of the piston is achieved. The edges of the piston can be rounded.

With high strength properties and high dimensional stability, the properties of the plastic can be used, and it is a cost-effective production without complex mechanical processing possible.

It is also advantageous that when used on fire doors a detachment of the drive from the wing is prevented, as it could be the case with an exclusive attachment in plastic.

Furthermore, while the wing is held by the drive in the closed position, even if the plastic of the housing melts, since the spring can be supported on the bent extensions of the insert.

The insert may be formed of metal as a stamped and bent part, whereby a favorable production is achieved. However, it can also be produced with other manufacturing processes, such as internal high-pressure forming, whereby seamless inserts are possible. It is also conceivable to use other materials which meet the respective requirements, such as other plastics, if the advantages of the behavior in case of fire can be dispensed with. It is advantageous that in case of plastic inserts made in the form of very complex designs can be produced inexpensively.

The stamped and bent part, after its final shape has been formed, can be joined together by folding over closure tabs, by riveting, screwing or else by soldering or welding. Also favorable is a latching in the manner of a toothing. The insert can be one-piece or multi-part. Multi-part inserts can be fixed together.

According to the invention the insert is to be provided with recesses, which favor a flow around plastic. Thus, among other things, the piston tread made of plastic can be formed, with special sliding properties of the plastic can be used. In this case, both inside and outside parts of the plastic can be kept free.

In the following, exemplary embodiments are explained in more detail in the drawing with reference to FIGS.

Fig. 1

einen Längsschnitt durch einen Türschließer;

Fig. 2

ein Einlegeteil eines Gehäuses in der Draufsicht;

Fig. 3

einen Schnitt des Einlegeteils aus Fig. 2 entlang der Linie III - III;

Fig. 4

ein Schrägbild eines Kolbens mit teilweise sichtbar dargestelltem Einlegeteil.

Showing:

Fig. 1

a longitudinal section through a door closer;

Fig. 2

an insert of a housing in plan view;

Fig. 3

a section of the insert from Fig. 2 along the line III - III;

Fig. 4

an oblique view of a piston with partially visible represented insert.

The in Fig. 1 shown in longitudinal section door closer 1 has a housing 2 for receiving the piston 3, which cooperates with the shaft 4 and the spring 5.

By opening the door leaf of the door, on which the door closer 1 is arranged, the shaft 4 is actuated in a known manner via an arranged between the door leaf and the shaft 4 of the door closer 1 linkage.

By a toothing 12 between the piston 3 and the shaft 4, the piston 3 is displaced such that the spring 5 is tensioned. In this case, located in the housing 2 hydraulic oil, which serves to dampen the door closer movement, overflow via channels from one piston side to the other side of the piston, it being provided that the overflow have valves, whereby the opening and closing behavior of the door closer is adjustable.

The door closer 1 can by the energy stored in the spring 5, which pushes the piston 3 back to its original position, and via the shaft 4 and the rod guide the door back into its closed position.

The housing 2 has an insert 7 'through which the housing 2 is reinforced. The insert 7 'can be formed as a punched-bent part or stamped-stamped part, as in the FIGS. 2 and 3 is shown. However, it can also be produced with other manufacturing processes, such as internal high-pressure forming, whereby seamless inserts are possible. Other materials can be used which meet the respective requirements, like other plastics. It is advantageous that in case of plastic inserts made in the form of very complex designs can be produced inexpensively.

In this case, all the required areas of the housing 2 are reinforced, as the area around the shaft 4, are formed in the dome 9. In order to support the forces acting on the housing 2 by the spring 5, bent projections 10 'are provided at right angles to the extension direction of the insert 7'.

It can also projections 10 'and embossments for receiving valves or seals may be provided.

The fasteners 6 for the housing 2 are likewise formed by tabs 8 formed on the insert part 7 '. This ensures that the attachment of the door closer 1 to a fire door can not melt even in heat, as could otherwise be the case with a mounting in plastic. Likewise, the piston 3 and the shaft 4 are held with their associated bearings in the insert 7 'of the housing 2 even after a melting of the plastic.

An insert 7 'or a multi-part insert 7' designed as a punched-bent part or a punched-stamped part can be brought together into its final shape after the punching and bending process, wherein the insert part can be locked in meandering latching lugs. Another possibility is fixation by bending, crimping, riveting, screwing or other fastening and joining methods. According to the invention, the insert 7 'recesses 13 such as slots or holes, which improve circulation of the plastic around the insert or parts of the insert 7' around and the connection of the plastic with the insert, for example, the tabs 8 for fastening the door closer free can stay.

The insert 7 'may have a round cross section or a non-circular shape, as in Fig. 3 represented, z. B. have an approximately rectangular or polygonal shape. The edges can be rounded.

The Indian Fig. 4 shown piston 3 has a shaping insert 7 "through which the piston 3 is reinforced.

The insert 7 "may be formed as a stamped and bent part, as shown in the Fig. 4 is shown. In this case, all required areas of the piston 3 are amplified. In order to support the spring force acting on the piston 3 by the spring 5, "bent extensions 10" are provided at right angles to the extension direction of the insert 7. The insert 7 "can also be used with other manufacturing methods, as internal high-pressure forming processes, whereby seamless inserts are possible. Other materials can be used which meet the respective requirements, like other plastics. It is advantageous that in case of plastic inserts made in the form of very complex designs can be produced inexpensively.

The insert 7 "has a toothing 12, which cooperates with the shaft 4. This toothing 12 can be integrally formed on the insertion part 7" or fixed as a separate part on the insertion part 7 ".

It can also projections 10 "and embossments may be provided, which are designed to receive valves and seals.

An insert 7 "or a multi-part insert 7" designed as a punched-bent part can be brought together in its final shape after the punching and bending process, wherein the insert part can be locked in meandering latching lugs. Another possibility is fixation by bending, crimping, riveting, screwing or other fastening and joining methods. According to the invention, the insert 7 "recesses 13 such as slots or holes, which circulate the plastic around the insert or parts of the insert 7" around and the connection of the plastic with the insert 7 improve, for example, the teeth 12, which with the output shaft corresponds, can remain free.

The insert 7 "may have a round cross-section or a non-circular shape, as in Fig. 4 represented, z. B. have an approximately rectangular or polygonal shape. The edges can be rounded.

The piston 3 also retains after a melting of the plastic in case of fire by the insert 7 "with the teeth 12 its supporting function.

List of reference characters

1

door closers

2

casing

3

piston

4

wave

5

feather

6

attachment

7 ', 7 "

insert

8th

flap

9

cathedral

10 ', 10 "

projections

11

plastic

12

gearing

13

recess

Claims (30)

1. Drive (1) for a door leaf or a window sash, with a housing (2) with a reception space for supporting the drive (1), with a piston (3) which is acted on by a spring (5) and which interacts with a shaft (4) for actuating the leaf/sash, and with a hydraulic fluid for damping purposes, wherein the drive (1) applies the force for moving the leaf/sash, characterized in that the housing (2) comprises an insert part (7') which imparts shape and stabilizes the shape in all the required regions, wherein the required housing wall thickness is formed at least in certain sections by an inner and outer cover layer of plastic (11) on the insert part (7'), and wherein the insert part (7') is provided with cutouts (13) through which the plastic can flow, and wherein, even after a melting of the plastic in the event of fire, the housing (2) maintains its supporting function by virtue of the insert part (7').
2. Drive according to Claim 1, characterized in that the insert part (7') is formed in one piece.
3. Drive according to Claim 1, characterized in that the insert part (7') is made of metal.
4. Drive according to Claim 3, characterized in that the insert part (7') is produced as a punched and bent part.
5. Drive according to Claim 3, characterized in that the insert part (7') is produced by an internal high-pressure forming process.
6. Drive according to Claim 1, characterized in that the insert part (7') is injection-moulded or cast from a plastic.
7. Drive according to Claim 1, characterized in that the interior of the insert part (7') is covered as far as possible with plastic.
8. Drive according to Claim 1, characterized in that the insert part (7') is covered as far as possible with plastic on its outside.
9. Drive according to Claim 1, characterized in that the insert part (7') is covered as far as possible with plastic on all sides.
10. Drive according to Claim 1, characterized in that the insert part (7') has formations (8, 9, 10') which absorb forces.
11. Drive according to Claim 10, characterized in that the formations are designed as tabs (8) for fixing the door closer (1).
12. Drive according to Claim 10, characterized in that the formations are designed as bent-over extensions (10') at which drive forces acting on the housing (2) can be supported.
13. Drive according to Claim 10, characterized in that the formations are designed as domes (9) for accommodating bearings or guides.
14. Drive according to claim 3, characterized in that the insert part (7') has stamped areas for stiffening purposes.
15. Drive according to Claim 1, characterized in that the insert part (7') has a non-round design in its major cross section.
16. Drive (1) for a door leaf or a window sash, with a housing (2), with a reception space supporting the drive (1), with a piston (3) which is acted on by a spring (5), and with a hydraulic fluid for damping purposes, wherein the drive has a piston provided with a toothing and interacting with an output shaft, characterized in that the piston (3) comprises an insert part (7") which imparts shape and stabilizes the shape in all the required regions, wherein the required piston wall thickness is formed at least in certain sections by an inner and outer cover layer of plastic (11) on the insert part (7''), and wherein the insert part (7'') is provided with cutouts (13) through which the plastic can flow, and wherein, even after a melting of the plastic in the event of fire, the piston (3) maintains its supporting function by virtue of the insert part (7'').
17. Drive according to Claim 16, characterized in that the insert part (7'') is formed in one piece.
18. Drive according to Claim 16, characterized in that the insert part (7'') is made of metal.
19. Drive according to Claim 18, characterized in that the insert part. (7'') is produced as a punched and bent part.
20. Drive according to Claim 18, characterized in that the insert part (7'') is produced by an internal high-pressure forming process.
21. Drive according to Claim 16, characterized in that the insert part (7'') is injection-moulded or cast from a plastic.
22. Drive according to Claim 16, characterized in that the interior of the insert part (7'') is covered as far as possible with plastic.
23. Drive according to Claim 16, characterized in that the insert part (7'') is covered as far as possible with plastic on its outside.
24. Drive according to Claim 16, characterized in that the insert part (7'') is covered as far as possible with plastic on all sides.
25. Drive according to Claim 16, characterized in that the insert part (7") has formations (10'') in order to support forces acting on the piston (3).
26. Drive according to Claim 25, characterized in that the formations are designed as bent-over extensions (10'').
27. Drive according to Claim 18, characterized in that the insert part (7 ") has stamped areas for stiffening purposes.
28. Drive according to Claim 16, characterized in that the toothing (12) is formed in one piece with the insert part (7'').
29. Drive according to Claim 16, characterized in that the insert part (7'') has a non-round design in its major cross section.
30. Drive according to Claim 1 and Claim 16, characterized in that a drive comprising the housing (2) and the piston (3) is formed.

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