WO2010069598A1

WO2010069598A1 - Door closer

Info

Publication number: WO2010069598A1
Application number: PCT/EP2009/009155
Authority: WO
Inventors: Thomas Salutzki
Original assignee: Dorma Gmbh + Co. Kg
Priority date: 2008-12-19
Filing date: 2009-12-17
Publication date: 2010-06-24
Also published as: TW201037139A; CN102257236B; EP2379830A1; CN102257236A; SG171935A1; DE102008063885A1; EP2379830B1

Abstract

The invention relates to a door closer for opening and/or closing a door, comprising a closer shaft, which can be coupled to the door, at least one piston, which is operatively connected to the closer shaft and arranged movably inside a housing, at least one spring, which is connected to a spring adjustment, wherein the spring adjustment is operatively connected to a gearbox (8, 9), at least one solenoid valve (6), which is arranged on the spring side of the door closer, wherein the gearbox (8, 9) is arranged following the spring space and situated in the valve block (5) of the solenoid valve (6).

Description

Title: Door closer

description

The invention relates to a door closer for opening and / or closing a door with a closer shaft, which is coupled to the door, with at least one piston, which is operatively connected to the closer shaft and is movably disposed within a housing, at least one spring, with a spring adjustment is connected, wherein the Federver position is operatively connected to a gear, at least one solenoid valve, which is arranged on the spring side of the door closer, wherein the transmission is arranged adjacent to the spring chamber and is located in the valve block of the solenoid valve.

A generic door closer is specified in DE 10 2004 031 898 B4, in which a solenoid valve on the spring chamber side facing away from the door closer housing is arranged, whereby a relatively large distance from the pivot point of the door to the axis of rotation of the drive axis of rotation of the closer shaft is present at the Linkage or a slide rail is arranged. This has the disadvantage that additional moments of force must be kept in order to close a corresponding door can. Another disadvantage is that in a door leaf assembly of the door closer, the solenoid valve can strike a wall before the door has reached an opening angle of about 180 °.

In G 93 08 568 a door closer is described which has a spring adjustment. This spring adjustment has the disadvantage that it is to operate the front side of the door closer, with no possibility to attach more components modularly. In DE 10 2006 012 757 A1 a door operating device is described, which is integrated in a door and has a spring adjustment. In the integrated assembly of the door operating device, the spring adjustment is performed from the upper side of the door operating device, since otherwise in the installed state of the door operating device no access to the spring adjustment is possible. This structure of the spring adjustment turns out to be disadvantageous if the door operating device is mounted on a door leaf or on the frame of a door. Since the axis of rotation of the tool holder is parallel to the drive axis of rotation of the shaft, which can be coupled to the door, the spring adjustment can be operated only from the upper side or from the lower side of the door operating device, which depends on whether the door operating device to a DIN left door or on a DIN right door is arranged.

Door closers are used in particular for fire doors, which must be opened by hand. These fire doors have the characteristic that they have a certain weight due to their design, which proves to be disadvantageous in the manual operation, since the user has to muster a lot of force to open the fire door can.

The object of the present invention is to develop a door closer with a solenoid valve of the type mentioned can be equipped with the doors such as fire doors, creating a more compact overall arrangement of the door closer is achieved, with door leaf assembly of the door closer an opening angle of the door of greater than 180 ° At the same time, the functionality of a spring adjustment is reliably ensured and a module-like arrangement is provided for further components. To solve this problem, a door closer with the features of claim 1 is proposed. In the dependent claims preferred developments are carried out.

For this purpose, the invention provides that, following the spring chamber, a valve block is arranged with a solenoid valve, wherein in the valve block, a transmission is present, which is operatively connected by a flange with the spring force adjustment and front to operate, wherein the valve block arrangements for receiving further components. Due to the front-side operability of the gearbox, the door closer can be used for a DIN left door as well as for a DIN right door. Furthermore, additional components such as a smoke detection unit can be included.

A measure improving the invention provides that the transmission consists of a bevel gear, which consists of at least two bevel gears. The arrangement of a bevel gear is deflected in a simple manner, a force application.

In an advantageous embodiment, an operating receptacle is provided on the front-side bevel gear. This has the advantage that the door closer can be equipped following the valve block with other components, such as a smoke detection unit, the access to the spring force adjustment is ensured.

Advantageously, the axis of rotation of the bevel gear with the operating receptacle and the drive axis at an angle of 90 ° to each other. This ensures that the operation of the spring force adjustment can be carried out basically from the front of the door closer. - A -

In a preferred embodiment, the valve block is screwed to the housing of the door closer. As a result, a simple assembly of the valve block is ensured on the housing of the door closer.

A further advantageous embodiment can be achieved in that further components are arranged in a modular fashion on the valve block. This makes it possible to attach different functions to the door closer, without having to commit in advance. Factory assembly remains flexible thanks to the modular mounting option.

Further advantages, features and details of the invention will become apparent from the following description in which several embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination.

Show it:

1 shows a door closer with a slide rail, wherein the door closer on the door leaf and the slide rail are mounted on the frame of a door,

2: the door closer with valve block and solenoid valve in a front view,

FIG. 3 shows a detail view from FIG. 2,

FIG. 4 shows a partial breakout from view Y of FIG. 3, FIG. 5: a perspective view of the door closer from FIG

2,

FIG. 6 shows a detail view from FIG. 5,

FIG. 7 shows a perspective rear view of the door closer

FIG. 5,

FIG. 8: an exploded view of the valve block adjacent to the door closer,

In Figure 1, a door closer 3 is shown, which is connected to a slide rail 4. The door closer is mounted on the door leaf of the door 2, wherein the slide rail 4 is arranged on the frame 1. The Drehach- se 13 and the drive axis of rotation 14 have a distance X to each other.

FIG. 2 shows a front view of a door closer 3 with the valve block 5 and a solenoid valve 6.

FIG. 3 shows a detail view from FIG. 2, in which the front surface 10 of the door closer 3 is indicated. Furthermore, the bevel gears 8 and 9 are indicated in the valve block 5, wherein the bevel gear 8 has an operating receptacle 7. Adjacent to the valve block 5 is the solenoid valve 6. In addition, a view direction Y is indicated in FIG.

4 shows a partial section from the direction of view Y of Figure 3. Here, the bevel gears 8 and 9 and the operating receptacle 7, the flange 15 and the spring chamber 17 can be seen, wherein furthermore the solenoid valve 6 is shown. In the figure 5 is a perspective view of the door closer 3, in which the front surface 10 and the operating receptacle 7 and the drive 12 are shown.

6 shows a detail view of Figure 5. The door closer 3, the valve block 5 and the solenoid valve 6, wherein in the valve block 5, the bevel gears 8 and 9 are present. The bevel gear 8 holds the operating receptacle 7.

FIG. 7 shows the door closer 3 in a perspective view, wherein the mounting side 11 can be seen. The valve block 5 and the solenoid valve 6 are arranged on the door closer 3.

FIG. 8 shows an exploded drawing. In this case, individual parts are shown, which are mounted in the valve block 5. For reasons of clarity, the bevel gears 8 and 9 and the flange 15, the solenoid valve 6 and the front surface 10 of the door closer 3 and screws 16 are indicated.

In a door leaf assembly of the door closer 3, it is necessary to comply with a distance X, since the opening moments and the closing moments are dependent on this distance X. The distance X refers to the pivot point of the door 2 and the drive rotational axis 14 of the drive 12, where the coupling to the slide rail 4 or to a scissors linkage takes place. The greater the distance X from the pivot point of the door 2 is selected, the higher are opening moment and closing moments. If the distance X from the pivot point of the door 2 is selected smaller than the distance X, the result is a lower opening moment and closing moment.

For fire doors, there are areas of application that require that the door closer 3 must cover different moments, which causes the door closer 3 a Federkraftspei- has cher which is to be operated by a spring force adjustment. By adjusting the spring force of the spring energy storage is set to the respective required force to close the relevant fire door in case of need functionally reliable.

The door closer 3 has a solenoid valve 6, which ensures that the spring energy storage is held at the point to which the fire door was first opened when actuated after withdrawal of the power supply. If the fire door is opened by hand to an angle of, for example, 65 °, so the spring energy storage is simultaneously stretched, wherein the solenoid valve 6 in conjunction with a fluid which is present in the housing of the door closer 3, the spring energy storage at this tensioned position keeps excited a free run of the fire door in the range 0 ° to 65 ° in this case is guaranteed. If the fire door is opened in this case in the further operation over 65 °, for example, to an opening angle of 120 °, the spring energy storage is further tensioned and kept excited by the solenoid valve 6 at this newly tensioned position, creating a freewheel the fire door in the area 0 ° to 120 ° is guaranteed.

This freewheel is held until the solenoid valve 6 is discharged. In this case, the spring energy storage is released and closes the fire door.

A use case is provided for example in hospitals. There, a fire door is opened in the morning one day for the first time up to an opening angle of 180 °, for example, so that the fire door remains in the freewheel the day. For rest, the solenoid valve 6 of the door closer 3 is no longer energized, which releases the spring derkraftspeicher to close the fire door safely. Occurs during the freewheel of the fire door a fire, the solenoid valve 6 is automatically deprived of power, which causes that the spring force accumulator is released to safely close the fire door.

In the present invention, the distance X are taking into account optimal opening moments and closing moments and the use of a spring force adjustment and a solenoid valve 6 arranged such that, following the spring chamber 17, a valve block 5 is arranged, which has a transmission for operating the spring force adjustment and the solenoid valve which is in Wirkverbin- fertilg with the spring energy storage. Here, the transmission has a bevel gear, which includes two bevel gears 8, 9. The bevel gear 8 has an operating receptacle 7 for a tool to rotate the bevel gear 8 about its axis of rotation, the bevel gear 9 is also operated because the bevel gear 8 is in operative connection with the bevel gear 9, whereby the spring force adjustment by the flange 15, which is in operative connection with the bevel gear 9, is actuated. The operating receptacle 7 is arranged at the front of the freewheel door closer 3, so that the Ferderkraftverstellung principle can be operated front, regardless of whether the door closer to a DIN right door or DIN left door is located. The axis of rotation of the gear 8 and the drive axis of rotation 14 are at an angle of 90 ° to each other.

The front side of the door closer 3 includes the front surface 10, which is the opposite side of the mounting side 11, wherein the mounting side 11 includes the side that abuts the door 2 or the frame 1. The mounting side 11 and the drive rotation axis 14 are parallel to each other.

The valve block 5 is screwed to the housing of the door closer 3 with screws 16. In order to integrate other components such as a smoke detection unit, such a component is arranged in a modular manner on the valve block 5. This ensures that, taking into account the moments in the opening direction as well as in the closing direction optimal distance X can be maintained, the door closer 3 having a solenoid valve 6 having an accessible at any time spring force adjustment.

LIST OF REFERENCE NUMBERS

1 door frame

2 door

3 door closers

4 slide rail

5 valve block

6 solenoid valve

7 Operation recording

8 bevel gear

9 bevel gear

10 front surface

11 mounting side

12 drive

13 axis of rotation

14 drive rotary axis

15 flange

16 screws

17 spring chamber

X distance

Claims

claims

1. Door closer (3) with at least one solenoid valve (6) for opening and / or closing a door (2), wherein the solenoid valve (6) on the spring side of the door closer (3) is arranged, with a closer shaft, with the door (2) can be coupled, with at least one piston, which is in operative connection with the closer shaft and is movable within a housing, at least one spring, which is arranged in the spring chamber (17) and a spring adjustment, which is in operative connection with the spring , characterized in that following the spring chamber (17) a valve block (5) with a solenoid valve (6) is arranged, wherein in the valve block (5) a transmission is present, which by a flange (15) with the spring force adjustment in Wirkverbin- is düng and front side to use, the valve block (5)

Provided arrangements for receiving other components.

2. Door closer (3) according to claim 1, characterized in that the transmission consists of a bevel gear.

3. Door closer (3) according to claim 2, characterized in that the bevel gear consists of at least two bevel gears (8, 9).

4. door closer (3) according to claim 3, characterized in that on the front-side bevel gear (8) an operating receptacle (7) is present.

5. door closer (3) according to claim 4, characterized in that the axis of rotation of the bevel gear (8) and the drive rotational axis (14) have an angle of 90 ° to each other.

6. Door closer (3) according to claim 1, characterized in that the valve block (5) is screwed to the housing of the door closer (3).

7. door closer (3) according to claim 6, characterized in that on the valve block (5) modularly further components are to be arranged.