DE102011053981A1 - Door operating device and method for producing a lid for a door operating device - Google Patents

Abstract

The invention relates to a door actuation device (1), in particular door closer or door drive, having a housing (30) which has an interior space (31) in which a mechanism (2) is arranged, which can be brought into operative connection with a door (3). a cover (10) disposed on the housing (30) and closing the interior space (31), an output shaft (4) extending through an opening (11) of the cover (10), whereby the mechanism (2) engages the door (3) can be coupled. According to the invention, it is provided that at least one sealing element (20) is provided, which forms a monolithic component (50) with the cover (10), so that a reliable sealing of the interior space (31) can be achieved.

Description

The invention relates to a door operating device, in particular a door closer or door drive with a housing having an interior, in which a mechanism is arranged, which can be brought into operative connection with a door, a lid disposed on the housing, which closes the interior, an output shaft, which extends through an opening of the lid, whereby the mechanism can be coupled to the door. Furthermore, the invention relates to a method for producing a lid for a door operating device.

From the state of the art - as in the DE 10 2008 063 885 A1 - Door actuators are known. In the door actuation devices may, for. B. act to door closers or door drives. For door closers, the door is manually opened by a user. During the opening process, energy is stored, for example in a closing spring within the housing of the door closer. The door closer can then close the door independently by the stored energy again. In contrast, the door drive is characterized by an arrangement which by means of additional auxiliary energy, for. B. by means of an electric motor, hydraulic, etc., the door automatically opens and closes again. In both described "types" of the door operating devices, a mechanical mechanism is thus provided within the housing of the door operating device, which is correspondingly in operative connection with the door to be moved. The arranged within the housing of the door actuator mechanism is to be sealed, so that environmental influences, especially dust, moisture, etc. can not get into the mechanism. Furthermore, the seal is used, for example, that within the housing existing excipients, such as oil, hydraulic oil, etc. can not get outside. It has been found that in particular possible leakage points can form in the region of the lid. To counteract this, a sealing element can be used, which seals the area of the lid accordingly, so that no external environmental influences enter the mechanism from the outside and no possible aids can flow from the inside to the outside.

It is an object of the present invention to provide a door operating device that is less expensive to manufacture, the operation is ensured.

The object is achieved by all features of claim 1. In the dependent claims, possible embodiments are described.

According to the invention, it is provided that at least one sealing element is provided, which forms a monolithic component with the cover, so that a reliable sealing of the interior can be achieved. An essential core of the invention is that the lid, as well as the sealing element form a common component, so that the production cost for a door operating device can be reduced. As a result, the number of individual parts of the door operating device can be reduced. In addition, the risk of incorrect assembly of the sealing element on the cover is also eliminated.

Advantageously, a bearing element may be provided which supports the output shaft in the cover, wherein the bearing element with the at least one sealing element and the lid forms a monolithic component, wherein in particular the bearing element is a metallic component. For example, the bearing element may be formed of a sintered metal. In one possible embodiment of the invention, the bearing element is designed as a bearing ring, which effectively supports the output shaft which connects the door to the mechanism located inside the housing. It should be noted that the bearing element is dimensioned accordingly to reliably absorb the door load that acts on a movement of the door on the bearing element.

In a measure improving the invention it can be provided that a first and a second sealing element are provided on the lid, wherein in particular the first sealing element effects a seal between the lid and the housing and the second sealing element effects a seal between the output shaft and the lid. For example, the sealing elements can be designed as a flat gasket, O-ring seal, profile gasket, fiber gasket, shaft seal, etc. It is also conceivable in the context of the invention that the sealing elements are designed such that they act as static seals, dynamic seals, and / or translational seals, rotary seals and non-contact seals.

Preferably, the second sealing element may be arranged on the bearing element, in particular that the second sealing element is arranged on the side facing away from the mechanism of the bearing element. This means that the second sealing element is located in the opening of the cover through which the output shaft extends outwardly from the interior of the housing.

Here, the second sealing element may be arranged directly adjacent to the bearing element, wherein advantageously has been shown that in this way a particularly satisfactory seal can be achieved.

It is also conceivable that the monolithic component is an injection molded part, wherein the lid is an injection molded part, in particular a plastic injection molded part, zinc die-cast part or aluminum die-cast part. It has been shown that particularly small tolerances can be maintained in the case of a lid made of die-cast zinc and sophisticated geometries and surfaces can be produced, which is also necessary in particular with door actuation devices. Since the output shaft passes through the opening of the lid and high torques are to be transmitted to the door, it is important that appropriate tolerances with respect to the geometry of the lid must be observed. For example, the lid may be formed of an aluminum casting alloy, for example, AlSi9Cu3 (Fe), AlSi12Cu1 (Fe), AlSi12 (Fe), or AlSi10Mg (Cu). Advantageously, it has been found that the lid of an aluminum casting has extreme strength values and a high ductility. In particular, these material properties may be important if high forces are to be absorbed from the outside. Another advantage is that due to the low density of the aluminum, the weight of the lid can be kept low.

It may also be inventively provided that the sealing elements are made of a plastic, in particular that the second sealing element is made softer in its material property than the first sealing element. Due to the rotating during operation of the door operating device output shaft within the opening of the lid, it has been found advantageous that the second sealing element is softer than the first sealing element, which seals the lid to the housing. Due to the forces, moments, etc. occurring within the opening of the lid, it is advantageous that the second sealing element has a certain elasticity and / or deformability, in order to simultaneously meet the high demands on a reliable seal. The present monolithic component may be a three-component injection-molded part, which is produced with a plastic injection molding tool, wherein the housing cover and the two sealing elements are made of different materials. If the bearing element arranged inside the opening is to be considered in this connection, the monolithic component even consists of four different materials, the entire component forming a one-piece monolithic component, whereby the assembly or production of the door actuating device can be substantially simplified.

In one possible embodiment of the invention, the monolithic component, in particular the cover, can be screwed to the housing. It can also be provided that the lid has a thread with which the lid is attached to the housing. It is particularly advantageous that the thread is integrated in the monolithic component, in particular that the thread is molded onto the lid. For example, the thread may be formed as an external thread on the lid, which is screwed into the housing of the door operating device in a simple manner.

In a further alternative of the invention, the lid can also be made of a plastic, wherein the at least one sealing element is designed on the lid in a two-component method or three-component method.

The above object is further achieved by a method having all the features of claim 10.

• 1. Spritzgießen des Deckels an das Lagerelement und
• 2. Anspritzen der Dichtelemente an den Deckel.

According to the invention, a method for producing a cover for a door actuating device is provided, wherein the cover has an opening with a bearing element and at least one sealing element, wherein the following steps are provided:

• 1. Injection molding of the lid to the bearing element and
• 2. Injection of the sealing elements to the lid.

In addition, it can be provided that a first and a second sealing element are molded onto the lid. Also, the method may be configured such that in step 1, that is, during the injection molding of the lid to the bearing element simultaneously a thread is injection-molded. This thread may for example be formed as an external thread, which is located on the lid.

In the context of this invention, the method according to the invention for the production of the cover can be referred to, which can serve in the above-described door operating device according to the invention.

It can also be provided that the bearing element is an injection molded part which is produced in a common injection molding process with the cover and the sealing elements and / or the thread. Alternatively, the bearing element may be a metallic component designed in a different method, on which the cover, the sealing elements and the thread can be injection-molded. Here, the entire assembly forms a monolithic component, wherein only the housing cover, the at least one sealing element and / or the thread are an injection molded part.

Further advantages, features and details of the invention will become apparent from the following description in which several embodiments 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 a purely schematic view of a door operating device,

2 a schematic flowchart relating to the production of the lid for the door operating device according to 1 and

3 an alternative of in 2 shown method.

In 1 is an example of a door operator 1 shown, which may be formed, for example, as a door closer or as a door drive. The door operator 1 has a housing 30 on that with an interior 31 is executed. In the interior 31 is a schematically illustrated mechanism 2 shown in operative connection with a door 3 stands. Depending on the embodiment of the door operating device 1 , that means the extent to which this is a door closer or a door drive, the mechanism 2 be formed in various ways, which will not be discussed in the following. To the interior 31 effective from the outside 6 seal is a lid 10 provided on the housing 30 is attached. The attachment points are not explicitly shown. For example, it is conceivable that the lid 10 with the housing 30 is screwed. For example, the use of countersunk screws is conceivable that a flat and clean mounting option of the lid 10 on the housing 30 guarantee.

The connection between the mechanism 2 and the door 3 via an output shaft 4 passing through an opening 11 of the lid 10 extends. The output shaft 4 is through a bearing element 40 inside the opening 11 stored. The output shaft 4 is about the axis of rotation 5 movable. The output shaft 4 can z. B. via a coupling element 7 with the door 3 be connected. For example, the coupling element 7 a linkage and / or a slide rail, etc., so effectively a power transmission from the door 3 on the door operator 1 and vice versa is possible.

To ensure a reliable seal of the interior 31 to ensure the lid points 10 two sealing elements 21 . 22 on that with the lid 10 a common, monolithic component made of different materials 50 form. Here, the first sealing element causes 21 a seal between the lid 10 and the housing 30 , The second sealing element 22 causes a seal between the output shaft 4 and the lid 10 , The second sealing element 22 is in this case immediately adjacent to the bearing element 40 arranged. The bearing element 40 is a bearing ring that can reliably absorb forces, torques, etc., during the movement of the door 3 on the output shaft 4 be transmitted. The bearing element 40 Here is a metallic component. As can be clearly seen, is the second sealing element 22 at the the interior 31 opposite side of the bearing element 40 , In addition, in the present embodiment, the sealing elements 21 . 22 made of a plastic, wherein the second sealing element 22 is formed softer in its material property, as the first sealing element 21 , This is due, among other things, to changing loads due to the rotation axis 5 rotating output shaft 4 arise, and thus the requirements for a reliable seal better by a soft sealing element 21 . 22 can be achieved.

In a further embodiment, the sealing elements 21 . 22 have the same material properties. It is also conceivable that the sealing element 21 has a material property, which with respect to the sealing element 22 is made softer.

The lid 10 with the sealing elements 20 consisting of a first sealing element 21 and a second sealing element 22 are formed, and the bearing element 40 form a common, monolithic component 50 , which in an injection molding according to 2 or 3 can be produced, which will be discussed below. The bearing element 40 can unlike the lid 10 as well as the sealing elements 21 . 22 a component which has not been produced in an injection molding process.

In a further embodiment, which is not explicitly shown, it is conceivable that a thread on the lid 10 is arranged, with which the lid 10 on the housing 30 can be screwed. It is conceivable that the thread on the lid 10 is injected.

The production of the monolithic component 50 , especially the lid 10 can be done in the way that according to 2 first the lid 10 to the already finished bearing element 40 is injected. This step is consistent with A 2 designated. In the further step B, the injection molding of the sealing elements takes place 21 . 22 to the lid 10 ,

Alternatively, it is conceivable that the first step A is modified in which during the injection molding of the lid 10 to the bearing element 40 at the same time a thread is injection-molded (step A + C), with the thread serving to cover the lid 10 to the housing 30 to fix.

LIST OF REFERENCE NUMBERS

1

Door actuator

2

mechanism

3

door

4

output shaft

5

axis of rotation

6

outdoors

7

coupling element

10

cover

11

opening

20

sealing element

21

first sealing element

22

second sealing element

30

casing

31

inner space

40

bearing element

50

monolithic component

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008063885 A1 [0002]

Claims (13)

Door operating device ( 1 ), in particular door closer or door drive with a housing ( 30 ), which has an interior ( 31 ), in which a mechanism ( 2 ) arranged in operative connection with a door ( 3 ), one on the housing ( 30 ) arranged lid ( 10 ), the interior ( 31 ), an output shaft ( 4 ) through an opening ( 11 ) of the lid ( 10 ), whereby the mechanism ( 2 ) with the door ( 3 ) is coupled, characterized in that at least one sealing element ( 20 ) provided with the lid ( 10 ) a monolithic component ( 50 ) forms, so that a reliable seal of the interior ( 31 ) is achievable. Door operating device ( 1 ) according to claim 1, characterized in that a bearing element ( 40 ) is provided, which the output shaft ( 4 ) in the lid ( 10 ), wherein the bearing element ( 40 ) with the at least one sealing element ( 20 ) and the lid ( 10 ) a monolithic component ( 50 ), wherein in particular the bearing element ( 40 ) is a metallic component. Door operating device ( 1 ) according to claim 1 or 2, characterized in that a first sealing element ( 21 ) and a second sealing element ( 22 ) on the lid ( 10 ) are provided, in particular the first sealing element ( 21 ) a seal between the lid ( 10 ) and the housing ( 30 ) and the second sealing element ( 22 ) a seal between the output shaft ( 4 ) and the lid ( 10 ) causes. Door operating device ( 1 ) according to claim 3, characterized in that the second sealing element ( 22 ) on the bearing element ( 40 ), in particular that the second sealing element ( 22 ) at the mechanism ( 2 ) facing away from the bearing element ( 40 ) is arranged. Door operating device ( 1 ) according to one of the preceding claims, characterized in that the monolithic component ( 50 ) is an injection molded part, wherein the lid ( 10 ) is in particular an injection molded part, in particular a plastic injection molded part or zinc die-cast part or aluminum die-cast part. Door operating device ( 1 ) according to one of the preceding claims, characterized in that the sealing elements ( 21 . 22 ) are made of a plastic, in particular that the second sealing element ( 22 ) is made softer in its material property than the first sealing element ( 21 ). Door operating device ( 1 ) according to one of the preceding claims, characterized in that the lid ( 10 ) has a thread with which the lid ( 10 ) on the housing ( 30 ) is attached. Door operating device ( 1 ) according to claim 7, characterized in that the thread in the monolithic component ( 50 ), in particular that the thread on the lid ( 10 ) is injected. Door operating device ( 1 ) according to one of the preceding claims, characterized in that the first sealing element ( 21 ) acts as a static seal. Method for producing a cover ( 10 ) for a door operating device ( 1 ), the lid ( 10 ) an opening ( 11 ) with a bearing element ( 40 ) and at least one sealing element ( 21 . 22 ), characterized by the following steps: 1. Injection molding of the lid ( 10 ) to the bearing element ( 40 ) due to an injection mold, 2. injection molding of the sealing element ( 21 . 22 ) to the lid ( 10 ) due to the same injection mold. Method according to claim 10, characterized in that a first ( 21 ) and a second sealing element ( 22 ) on the lid ( 10 ) are injected. A method according to claim 10 or 11, characterized in that in step 1.) simultaneously a thread is injection-molded. Method according to one of claims 10 to 12, wherein the lid ( 10 ) for a door operating device ( 1 ) according to claims 1 to 9 is used.

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