EP1431494A2 - 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 17.

From CH 281 690 a door closer is known, which one with a liquid filled housing. The housing can be made of an oil-tight plastic exist and is on a dovetail-shaped fastener a mounting plate to be fastened to the door and slidable with screws ascertainable led.

With this construction, it is disadvantageous that the plastic housing is high Has wall thicknesses to support the forces occurring on and in the door closer to be able to. This ensures a dimensionally accurate production with non-cutting The process is difficult because plastics are used, for example, during manufacture by injection molding when cooling.

It is also disadvantageous that plastics are subjected to continuous exposure can flow away with a force, which changes the housing dimensions.

If the door closer was arranged on a fire door, that would be Plastic housing of the door closer in the event of fire due to the effects of heat melt and the door closer could no longer shut the door.

DE 298 22 099 discloses a door closer with a cam disc, the one with a housing filled with a damping medium emerging drive shaft is connected. The cam disc is in Axis seen on a pressure roller on each side and stands with a piston acted upon by a closer spring. The Piston and the housing are made of an oil-tight plastic, the Piston has a sleeve or a piston ring made of another material. se or a piston ring made of another material. The piston enclosing hole can also be a socket made of a different material exhibit.

It is disadvantageous that properties of plastics, such as their sliding properties, cannot be used as the piston increases the service life encloses a bushing or a piston ring made of a material other than plastic, and the piston receiving space is also made of a different material consists. Due to the large material thicknesses of the plastic in the piston and in the Housing results in large shrinkage dimensions, which adversely affect the dimensional accuracy and thus affect the accuracy of fit of the piston and housing.

The arrangement of the door closer on a fire door still exists the disadvantage that the mechanical fastening in the plastic of the door closer can be destroyed by the heat and a guard lock on the door is then no longer given by the door closer.

The invention is based, an inexpensive drive for the task To form the wings of a door or a window using plastic, with a housing and / or a piston, which is dimensionally stable and stable are.

The object is achieved by the features of claim 1 and claim 17 solved.

The subclaims form advantageous design options for the invention.

A drive according to the invention can be used as an automatic drive for doors or Windows be formed. The drive can also be a manual window drive or be a floor or overhead door closer.

For example, there are overhead door closers via a linkage with the wing the door associated with the door closer. This linkage transmits the rotary movement of the wing on a shaft in the door closer, which for example one with a spring via a toothing or a cam disc loaded piston moves. This shifting movement takes place within a hydraulic fluid located in the housing instead, the hydraulic fluid from one side of the piston to the other side through overflow channels and can overflow valves. In the overflow channels are common Throttle valves arranged, which set the behavior of the door closer can be. The piston in the door closer becomes like this when the wing is opened moved that the spring is tensioned. By relaxing the spring the piston is moved back again and the shaft is turned back, whereby the wing is guided over the linkage into its closed position. The occurring Forces must be supported by the housing and the piston.

To the on a drive with a trained using plastic To be able to absorb the forces acting on the housing and the favorable properties of the plastic, such as the friction properties, an insert is used, which at least in sections with plastic is encased, for example by an injection molding process. The insert is molded in such a way that it stiffens all required areas of the drive housing. A dome is formed on both sides in the area of the closer shaft, which can support the bearing of the shaft. On the one opposite the piston On the side of the spring, bent extensions are provided on the insert, which can support the spring force of the tensioned spring. coins or beads can further stiffen the insert. It is also on the insert provided that fastening tabs are formed, which allow to fix the operator to the door or in a floor box. there the mounting tabs can be overmoulded with plastic or kept free become. It is also advantageous that, for example, threads in the fastening Insert can be present, which has a higher strength than thread in Have plastic. The insert can be provided with recesses, which favor a flow around with plastic.

The piston of the actuator is also manufactured using an insert, whereby a piston adapted to the shape of the housing is formed can. The teeth for the closer shaft can also be formed in the insert or inserted into the insert of the piston and fixed to it. Likewise can be provided for valves. Possible ribs and Recesses can favor the application of plastic and the strength of the insert.

By using an insert for the piston and housing the material thickness of the plastic can be kept small without the advantages of Losing plastic. The housing dimensions can also be special be kept small, with different housing shapes, especially in Piston chamber can be formed, which is a small size of the door closer allow. The piston chamber can deviate from the usual one round shape be rectangular or polygonal, which also a The piston is prevented from rotating. The edges of the piston can be rounded.

With high strength properties and high dimensional stability, the properties can of the plastic can be used, and it is inexpensive to manufacture possible without complex mechanical processing.

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

Furthermore, the sash is held in the closed position by the drive, even if the plastic of the housing melts, because the spring is on can support the bent extensions of the insert.

The insert can be made of metal as a stamped and bent part, whereby cheap production is achieved. But other manufacturing processes, such as internal high pressure forming processes, whereby seamless inserts are possible. It is also conceivable to use other materials which meet the respective requirements, such as others Plastics, if the benefits of behavior in the event of fire are waived can. It is advantageous that in the case of inserts made of plastic the form of very complex training can be produced inexpensively.

The stamped and bent part can, after its final shape has been formed, by Bending over locking tabs, by rivets, screws or else be joined together by soldering or welding. A latching is also favorable in the manner of a gear. The insert can be in one part or in several parts his. Multi-part inserts can be fixed to each other.

It is advantageous to provide the insert with recesses that flow around it favor with plastic. This can be used, among other things, for the piston running surface be made of plastic, with special sliding properties of the plastic can be used. It can both inside and outside areas are kept free of plastic.

In the following, exemplary embodiments are shown in the drawing based on the Figures explained in more detail.

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.

Show:

Fig. 1

a longitudinal section through a door closer;

Fig. 2

an insert part of a housing in plan view;

Fig. 3

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

Fig. 4

an oblique view of a piston with an insert part shown partially visible.

The door closer 1 shown in longitudinal section in FIG. 1 has a housing 2 Recording 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 is in a known manner via a between the door leaf and the shaft 4th the door closer 1 arranged linkage actuates the shaft 4.

Through a toothing 12 between the piston 3 and the shaft 4, the piston 3 moved such that the spring 5 is tensioned. It can be in Housing 2 hydraulic oil, which dampens the door closer movement serves, via channels from one side of the piston to the other side of the piston overflow, it being provided that the overflow channels have valves, whereby the opening and closing behavior of the door closer can be adjusted.

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

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

All the necessary areas of the housing 2 are reinforced, such as the area around the shaft 4, in which domes 9 are formed. To the spring 5 supporting forces acting on the housing 2 are at right angles to Direction of extension of the insert 7 'bent extensions 10' provided.

There can also be extensions 10 'and embossments for receiving valves or be provided by seals.

The fastenings 6 for the housing 2 are also by on the insert 7 ' molded tabs 8 formed. This ensures that the attachment Do not melt the door closer 1 on a fire door, even if it develops heat can, as is otherwise the case with a fastening in plastic could be. Likewise, the piston 3 and the shaft 4 with their associated Bear in the insert 7 'of the housing 2 even after the melting Plastic.

An insert 7 'or a stamped-bent part or stamped-stamped part Multi-part insert 7 'can be in its final shape after the punching and bending process are brought together, the insert being arranged in a meandering shape Lugs can be locked. Another fixation is also possible by bending, flanging, riveting, screwing or other fastening and Joining processes. The insert 7 'can have recesses 13 such as slots or Have holes which flow around the plastic around the insert or around parts of the insert 7 'and the connection of the plastic with the Improve insert, for example the tabs 8 for fastening the Door closer can remain free.

The insert 7 'can have a round cross-section or a non-round one Shape as shown in Fig. 3, e.g. B. an approximately rectangular or have a polygonal shape. The edges can be rounded.

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

The insert 7 ″ can be designed as a stamped and bent part, as is shown in FIG. 4 is shown. All the necessary areas of the piston 3 are reinforced. In order to support the spring force acting on the piston 3 through the spring 5, are bent at right angles to the direction of extension of the insert 7 " Extensions 10 "are provided. However, the insert 7" can also be produced using other manufacturing methods, such as internal high pressure forming processes, whereby seamless inserts are possible. Other materials can also be used which meet the respective requirements like others Plastics. It is advantageous that in the case of inserts made of plastic very complex training can be produced inexpensively in the form.

The insert 7 ″ has a toothing 12 which interacts with the shaft 4. This toothing 12 can be formed in one piece on the insert 7 " be or set as a separate part on the insert 7 ".

Extensions 10 "and embossings can also be provided, which are for receiving of valves and seals are formed.

An insert 7 "designed as a stamped and bent part or a multi-part insert 7 "can be brought together to its final shape after the punching and bending process be, the insert in meandering locking lugs can be locked. Another fixation by bending is also possible, Flanging, riveting, screwing or other fastening and joining processes. The insert 7 "can have cutouts 13 such as slots or holes, which flows around 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 toothing 12, which with the output shaft corresponds, can remain free.

The insert 7 "can have a round cross-section or a non-round one Shape as shown in Fig. 4, e.g. B. an approximately rectangular or have a polygonal shape. The edges can be rounded.

The piston 3 also keeps in after melting the plastic Fire in the insert 7 "with the teeth 12 its supporting function at.

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 (32)

Drive for a wing of a door or window, with a housing with a receiving space for supporting the drive, the drive applying the force for the wing movement,
characterized in that the housing (2) has a shape-stabilizing insert (7 '), the necessary housing wall thickness being formed at least in sections by an inside and outside cover layer made of plastic (11) on the insert (7'). Drive according to claim 1,
characterized in that the insert (7 ') is formed in one piece. Drive according to claim 1,
characterized in that the insert (7 ') is made of metal. Drive according to claim 3,
characterized in that the insert (7 ') is manufactured as a stamped and bent part. Drive according to claim 3,
characterized in that the insert (7 ') is manufactured using an internal high-pressure forming process. Drive according to claim 1,
characterized in that the insert (7 ') is injection molded or cast from a plastic. Drive according to claim 1,
characterized in that the interior of the insert (7 ') is largely covered with plastic. Drive according to claim 1,
characterized in that the insert (7 ') is largely covered with plastic on the outside. Drive according to claim 1,
characterized in that the insert (7 ') is largely covered on all sides with plastic. Drive according to claim 1,
characterized in that the insert (7 ') has force-absorbing formations (8, 9, 10'). Drive according to claim 10,
characterized in that the formations are designed as tabs (8) for fixing the door closer (1). Drive according to claim 10,
characterized in that the formations are designed as bent extensions (10 '), on which driving forces acting on the housing (2) can be supported. Drive according to claim 10,
characterized in that the formations are designed as domes (9) for receiving bearings or guides. Drive according to claim 3,
characterized in that the insert (7 ') has embossments for stiffening. Drive according to claim 1,
characterized in that the insert (7 ') is provided with recesses (13) through which the plastic can flow. Drive according to claim 1,
characterized in that the insert (7 ') is non-circular in its essential cross-section. Drive for a wing of a door or a window, with a housing, with a receiving space for supporting the drive, the drive having a piston with a toothing which interacts with an output shaft,
characterized in that the piston (3) has a shape-stabilizing insert (7 "), the necessary piston wall thickness being formed at least in sections by an inside and outside cover layer made of plastic (11). Drive according to claim 17,
characterized in that the insert (7 ") is formed in one piece. Drive according to claim 17,
characterized in that the insert (7 ") is made of metal. Drive according to claim 19,
characterized in that the insert (7 ") is manufactured as a stamped and bent part. Drive according to claim 19,
characterized in that the insert (7 ') is manufactured using an internal high-pressure forming process. Drive according to claim 17,
characterized in that the insert (7 ") is injection molded or cast from a plastic. Drive according to claim 17,
characterized in that the interior of the insert (7 ") is largely covered with plastic. Drive according to claim 17,
characterized in that the insert (7 ") is largely covered on the outside with plastic. Drive according to claim 17,
characterized in that the insert (7 ") is largely covered on all sides with plastic. Drive according to claim 17,
characterized in that the insert (7 ") has formations (10") to support forces acting on the piston (3). Drive according to claim 26,
characterized in that the formations are designed as bent extensions (10 "). Drive according to claim 19,
characterized in that the insert (7 ") has embossments for stiffening. Drive according to claim 17,
characterized in that the insert (7 ") is provided with recesses (13) through which the plastic can flow. Drive according to claim 17,
characterized in that the toothing (12) is formed in one piece with the insert (7 "). Drive according to claim 17,
characterized in that the insert (7 ") is non-circular in its essential cross-section. Drive according to claim 1 and claim 17,
characterized in that a drive is formed with the housing (2) and the piston (3).

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