EP1960614B1 - Device for fixing at an adjustable angle - Google Patents

Description

The invention relates to a fixed to the roof surface, on this upwardly projecting device, such as a ventilation device or an antenna attachment. The device has a particularly good adaptability to the given roof pitch.

• Aus der Ebene einer Dacheindeckungsplatte ragt eine Fläche in Form einer oben abgeschnittenen Kuppel nach oben. Auf diese Kuppel ist von außen eine haubenartige Fläche aufgesetzt, welche in ihrer Mitte ebenfalls geöffnet ist und dort ein Rohr trägt. Die Kuppelfläche und der daran anliegende Teil der Haubenfläche sind zumindest annähernd Teilflächen von koaxial angeordneten rotationssymmetrischen Hohlkörpern, wobei die Haubenfläche außen liegt, und die gemeinsame Achse horizontal, parallel zur Dachfläche liegt. Die Kuppelfläche liegt gegenüber der Dachfläche unveränderbar. Die Haubenfläche ist gegenüber der Kuppelfläche um besagte gemeinsame Achse schwenkbar und in der jeweils passenden Schwenkstellung fixierbar. Damit kann das mit der Haubenfläche verbundene Rohr unabhängig von der gegebenen Dachschräge vertikal ausgerichtet werden.

The embodiments described below for ventilation devices that project beyond the roof surface and that can be adapted to the respective roof surface inclination are all based on the following basic principle:

• From the level of a roofing plate protrudes a surface in the form of a top cut dome upwards. On this dome, a hood-like surface is placed from the outside, which is also open in its center and there carries a tube. The dome surface and the adjoining part of the hood surface are at least approximately partial surfaces of coaxially arranged rotationally symmetrical hollow bodies, wherein the hood surface lies outside, and the common axis is horizontal, parallel to the roof surface. The dome surface is invariable with respect to the roof surface. The hood surface is pivotable relative to the dome surface about said common axis and can be fixed in the respectively suitable pivot position. Thus, the pipe connected to the hood surface can be aligned vertically regardless of the given pitch.

According to the DE 195 17 885 C1 the hood part is fixed in its position on the dome part by the two parts, as soon as they are in the correct angular position to each other, are brought into engagement with mutually complementary toothing areas. The teeth are attached closer to the roof level, as said common axis of dome part and hood part. The toothing on the hood part forms a part-outer circumferential surface of a gear, those on the dome part a partial inner circumferential surface. They are engaged or disengaged by the hood part by rotation of two eccentric bolts, with the aid of which it is attached in the region of the common axis on the dome part, to the roof surface, and is moved away from it. DE 195 17885 C1 discloses a device having all the features of the preamble of claim 1. The advantage of this design is that the right setting can be readjusted at any time The disadvantage is that the common axis of dome part and hood part comes to lie well above the roof surface, so the whole device in side view looks very chunky, and also requires a lot of material.

According to the AT 405 430 B hood part and dome part are fixed in the following manner in the correct pivot position together: Through both parts runs a pipe. At the dome part, the tube is held by a stop against movement upwards, but otherwise pivotable. In the longitudinal region extending over the hood part, the tube is provided with an external thread on which a ring nut is engaged, with the aid of which the hood part is pressed against the coupling part.

Significant disadvantages of this embodiment are: Fixing the individual parts to each other in the correct position requires great skill in craftsmanship. Often, during the fixing process, the individual parts slip out of position relative to one another. Often, the parts are not mounted sufficiently firmly on each other, the inclination of the hood part is then under load, e.g. changed by snow pressure inadmissible. Due to space reasons, the inclination adjustment range is limited compared with other solutions as a result of the tube extending through the hood part and the dome part; One can help by turning the hood part around a vertical axis by 180 ° for flat roofs, which in turn complicates the assembly.

According to the DE 198 46 120 C1 Hood part and dome are also held together by corresponding teeth in the correct angular position to each other. An inner peripheral portion of a ring gear on the dome part corresponds to an outer peripheral portion of a ring gear on the hood part. The teeth are mounted in the end face area of dome surface or hood surface between the common pivot axis and maximum distance from the roof surface. The toothed piece on the hood part is attached to this at a pivotable in the elastic region tab. When the hood part and the dome part are put together, the toothings automatically engage. With the help of a tool, such as a screwdriver, the tab, which carries the teeth of the hood part, can be deformed so that the teeth are disengaged.

An advantage of this principle is the possible low construction. The disadvantage is that hood part and dome part can never be fixed to each other without play due to inevitable Längenmaßtoleranzen, and that it is difficult to nearly impossible to dimension the elastic, a gearing bearing tab so that they on the one hand in a fixed state at all temperatures and in view of unavoidable tolerances of material properties, it holds sufficiently well, especially if snow from roof areas located further up against it presses on the other hand, but on the other hand is deliberately detachable by elastic deformation. The requirement that it must be possible to engage or disengage the gears by means of elastic deformation is too contradictory to the requirement of using large-dimensioned teeth in order to achieve sufficient strength. Another disadvantage is that a tool and also some skill is required to solve the fixed parts again from each other.

According to the AT 412 793 Both coupling part and hood part by mutually engaging sawtooth teeth, and by bolts which are arranged in the common pivot axis, held in the correct angular position to each other. The teeth are located on the outermost shell area of dome surface or hood surface. The hood surface can be turned towards the overhead roof area; while the saw teeth slide off each other. Against opposite pivotal movement block the teeth.

In this construction, it is easy to bring the pipe projecting beyond the roof surface from a setting suitable for flat roofs into one suitable for steep roofs. However, it is only possible with considerable difficulty - namely, by disassembling the arrangement - to change the inclination setting in the opposite direction. Here, too, the requirement that it should be possible or should be possible to bring the teeth into or out of engagement by elastic deformation is too contradictory to the requirement of using teeth with large dimensions in order to be able to achieve sufficient strength.

• es soll einfach sein den Haubenteil am Kuppelteil in die richtige Stellung zu bringen und dort zu fixieren.
• die Fixierung soll im Bedarfsfall einfach und ohne Werkzeugeinsatz lösbar sein.
• die Fixierung soll sicher und fest sein.
• die Funktionen sollen robust sein gegen extreme Umgebungsbedingungen, gegen Maßtoleranzen der Bauteile und gegen Toleranzen der Eigenschaften der verwendeten Materialien.
• Es soll möglich sein, Kuppel und Haube niedrig zu bauen.

Based on this state of the art, the inventor has set himself the task of providing a passage, which can be adjusted to the roof surface slope, through the roof surface, consisting of dome part and pivotable hood part, which fulfills the following conditions:

• It should be easy to bring the hood part on the dome part in the correct position and fix it there.
• the fixation should be solvable if necessary simply and without the use of tools.
• the fixation should be secure and firm.
• The functions should be robust against extreme environmental conditions, against dimensional tolerances of the components and against tolerances of the properties of the materials used.
• It should be possible to build dome and hood low.

• Es wird von einer Bauweise mit Kuppel und Haube ausgegangen, wobei die Kuppel aus der Ebene einer Dacheindeckungsplatte ragt, und von außen durch eine Haube teilweise umfasst wird, wobei die Kuppel und der daran anliegende Teil der Haube zumindest annähernd Teilflächen von koaxial angeordneten rotationssymmetrischen Hohlkörpern sind, wobei die Haubenfläche außen liegt, und die gemeinsame Achse horizontal, parallel zur Dachfläche liegt. Die Haubenfläche ist gegenüber der Kuppelfläche um besagte gemeinsame Achse schwenkbar und in der jeweils passenden Schwenkstellen fixierbar. Mit der Haube ist jener über die Dachfläche reichende Teil verbunden, welcher im Normalfall unabhängig von der Dachflächenneigung vertikal ausgerichtet sein soll.
• Die Fixierung bzw. das Lösen dieser Fixierung zwischen Haubenteil und Kuppelteil wird durch Ineinandergreifen bzw. Auseinanderführen von Umfangsbereichen von korrespondierenden Zahnkränzen an Kuppelteil und Haubenteil hergestellt.
• Zum Fixieren bzw. Lösen von Haubenteil und Kuppelteil aneinander wird der Haubenteil gegenüber dem Kuppelteil bewegt, indem ein Bolzen, welcher in einem der beiden Teile drehbar gelagert ist, gedreht wird, und mit einem exzentrischen Bereich seiner Mantelfläche an einer Anschlagfläche am zweiten Teil anliegt.
• Die Verzahnungen befinden sich an von der Dachebene weiter entfernt liegenden Bereichen von Kuppelteil und Haubenteil als die Schwenkachse zwischen Kuppelteil und Haubenteil.

The construction according to the invention, according to claim 1, by means of which the object is achieved, on the one hand has the following known features:

• It is assumed that a construction with dome and hood, the dome protrudes from the level of a roofing plate, and is partially covered from the outside by a hood, the dome and the adjoining part of the hood are at least approximately partial surfaces of coaxially arranged rotationally symmetrical hollow bodies , wherein the hood surface is located on the outside, and the common axis is horizontal, parallel to the roof surface. The hood surface is pivotable relative to the coupling surface about said common axis and can be fixed in the respectively suitable pivot points. With the hood that reaching over the roof surface part is connected, which should normally be aligned vertically regardless of the roof slope.
• The fixation or release of this fixation between hood part and dome part is made by intermeshing or diverging from peripheral areas of corresponding sprockets on dome part and hood part.
• For fixing or releasing the hood part and coupling part to each other, the hood part is moved relative to the coupling part by a bolt, which is rotatably mounted in one of the two parts, is rotated, and rests with an eccentric portion of its lateral surface on a stop surface on the second part.
• The teeth are located on the roof plane further away areas of dome part and hood part as the pivot axis between dome part and hood part.

• Der Zahnkranz am Haubenteil bildet einen Innenumfangsbereich und der Zahnkranz am Kuppelteil einen Außenumfangsbereich. Der Bolzen befindet sich nicht an der Schwenkachse zwischen Kuppelteil und Haubenteil, sondern zwischen den Verzahnungen und der Schwenkachse.

On the other hand, the construction has the following new features compared to the construction methods with the mentioned known features:

• The sprocket on the hood part forms an inner peripheral region and the sprocket on the dome part forms an outer peripheral region. The bolt is not located on the pivot axis between dome part and hood part, but between the teeth and the pivot axis.

• Die Verzahnungen befinden sich an den Rändern der Mantelfläche des Haubenteils zu deren Stirnseiten hin, bzw. am Rand, also am Umfang, der Stirnflächen des Kuppelteiles an denen diese in die Mantelfläche übergehen.
• Im Bereich der Schwenkachse sind Kuppelteil und Haubenteil durch Achsstummel, welche in einer dazu komplementären Lagerschale anliegen, auf Anschlag gehalten.
• Der Bolzen ist an jenem Teil, an welchem er drehbar gelagert ist, gegen unerwünschte axiale Bewegung durch einen Anschlag gehalten, welcher durch die Stirnseite einer sich aus der Mantelfläche des Bolzens erstreckenden federnden Zunge gebildet wird.

The following new features represent advantageous developments:

• The teeth are located at the edges of the lateral surface of the hood part to the end faces, or at the edge, ie on the circumference, the end faces of the dome part at which they merge into the lateral surface.
• In the region of the pivot axis dome part and hood part by stub axle, which rest in a complementary bearing shell, held to stop.
• The bolt is held at that part, on which it is rotatably mounted, against undesired axial movement by a stop, which is formed by the end face of a extending from the lateral surface of the bolt resilient tongue.

Fig. 1:

zeigt eine Prinzipskizze der Erfindung in einer seitlichen Schnittansicht. Haubenteil und Kuppelteil sind dabei aneinander fixiert.

Fig. 2:

Zeigt in gleicher Ansicht wie Fig. 1 die gleiche Anordnung, wobei Hauben- und Kuppelteil zueinander schwenkbar sind.

Fig.3:

Zeigt eine Ausführungsform eines Bolzens zum Fixieren bzw. Lösen von Hauben- und Kuppelteil.

The invention will be more apparent from the drawings:

Fig. 1:

shows a schematic diagram of the invention in a side sectional view. Hood part and dome part are fixed to each other.

Fig. 2:

Shows in the same view as Fig. 1 the same arrangement, hood and dome are mutually pivotable.

Figure 3:

Shows an embodiment of a bolt for fixing or releasing the hood and dome part.

From the lying approximately in the roof level level part 1.1 of the roofing plate 1, the dome 1.2 rises. This dome is essentially part of a circular cylindrical hollow body, which has the axis of symmetry 4.

The hood part 2 rests with its lower surface on the outside of the dome 1. Preferably, where the axis 4 normal standing two end walls of the dome 1.2 merge into the lateral surface of the dome, the dome is provided with external cogs 1.3. The hood part 2 is provided with corresponding internal toothed rings 2.3, which preferably at the edges of the lateral surface where it merges into the end faces. Thus, the teeth are located on the best supported surface areas of dome and hood, and thus can be very strong running and also heavily loaded, without unduly burdening the structure to which they are attached.

A normal to the axis 4 wall of the hood part (2) is provided at a location between the axis 4 and ring gear 1.3 with a circular bore. The adjoining wall of the dome part (1) is provided with a recess for this purpose partially aligned 1.4, whose off-axis edge 4 in a constant distance to the axis 4 runs. A bolt 3 extends through the hole in the hood part and the adjoining recess 1.4 in the dome part. In the hood part of the bolt is rotatably mounted about its longitudinal axis. In the longitudinal region of the bolt 3 located in the wall region of the dome part, the latter is provided on one side of the lateral surface with a circumferential region 3.2, which lies closer to the bolt axis than the opposite lateral surface region.

In the in Fig. 1 shown location of the bolt with the peripheral region 3.2 opposite jacket portion on the axis 4 facing away from the edge of the recess 1.4 of the dome part. Since the pin on the hood part normal to its axis is not linearly movable, thus movement of the hood part away from the dome part is not possible. The gears 1.3 and 2.3 are engaged. Pivoting movement of the hood part with respect to the dome part is not possible. In the example shown protrudes from the hood part 2 a circular cylindrical axle stub 2.5 in a recess 1.5 a normal to the axis 4 surface of the dome part and is there on two flanks of this depression at a point where they form an acute angle to each other, which is aligned in that in the projection on a frontal plane of the dome, between its extended imaginary legs at least the largest part of the teeth 1.3 would lie .. Thus, the toothing on the one hand and this contact point on the other hand form a pair of stop surfaces against pivotal movement between the hood part and dome part. The interposed bolt 3 is therefore not or only slightly loaded at moments stress between the hood part and dome part.

In Fig. 2 is the bolt 3 with respect to its position of Fig. 1 rotated by 180 ° about its axis, so that its flattened lateral surface region 3.2 lies on the side facing away from the axis 4. Thus, the hood part can be moved slightly away from the dome part, so that the teeth are disengaged. The hood part can be pivoted relative to the dome part. When the bolt 3 is further rotated by about a quarter turn about its axis, the gears are again engaged, and the hood part is fixed.

In Fig. 3 illustrates how the bolt 3 may be provided with resilient tongues 3.3, which cause the bolt can not fall out of the hole on the hood part - which would be very annoying when working on a sloping roof. Nevertheless, the bolt can simply be inserted into the hole, since the resilient tongues 3.3 give way elastically. It is advantageous to provide the bolt 3 with a handle part 3.4 which is not rotationally symmetrical, but for example has the shape of a small plate.

As a result of the fact that the bolted connection used for fixing and releasing hardly needs to absorb any forces when mounted, it can be optimized for ease of operation and reliable operation.

The fact that the teeth are mounted in the upper dome area, the dome can be kept flat, which provides a more beautiful look and material can be saved.

The described device is best realized from individual injection molded plastic parts. But it can also be formed from individual metal parts.

Claims (5)

1. Device with a dome piece (1) and a hood piece (2) for fastening a part extending over a roof surface at an adjustable angle to the roof surface, whereby a surface in the shape of a dome (1.2) is connected to and extends from the plane of a roofing panel, onto which a hood-shaped surface is affixed externally, whereby the dome surface and the hood surface lying atop it are at least approximately sub-surfaces of coaxially arranged, rotationally symmetric hollow bodies, whereby the shared axis (4) runs horizontally, parallel to the roof surface and the hood surface is capable of pivoting relative to the dome surface at the mentioned shared axis (4) and can be locked into the respectively appropriate pivot position, whereby the associated locking and loosening between the hood piece (2) and dome piece (1) is accomplished by the intermeshing and separating of circumference areas of corresponding toothed rings (1.3, 2.3), whereby the relative movement between the hood piece and dome piece that leads to intermeshing of the teeth is caused by turning of a bolt (3), which is mounted in one of the two pieces such that it can be rotated and that an eccentric area of its lateral surface rests against a contact surface of the second piece, whereby the corresponding teeth (1.3, 2.3) of the dome piece (1) and hood piece (2) are situated farther away from the roof plane than the pivot axis (4), characterised by the fact that the teeth (1.3) on the dome piece (1) form an exterior lateral surface and the teeth (2.3) on the hood piece (2) form an interior lateral surface and that the bolt (3) serving for locking and loosening is situated at a radial distance from the pivot axis (4) between the teeth (1.3, 2.3) on the one hand and the pivot axis (4) on the other hand.
2. Device according to claim 1, characterised by the fact that the intermeshing teeth (1.3, 2.3) on the dome piece (1) and hood piece (2) are each located at the transitional areas between the facing surfaces and the lateral surfaces.
3. Device according to claim 1 or 2, characterised by the fact that the dome piece (1) and hood piece (2) abut each other in the area near the pivot axis (4) in the form of a stub shaft (2.5) on one side and a surface resting against its lateral surface on the other side.
4. Device according to one of the claims 1 to 3, characterised by the fact that the bolt (3) is held against axial movement by a latching mechanism on the piece to which it is mounted in a rotating fashion.
5. Device according to claim 4, characterised by the fact that the latching mechanism is formed by a spring tongue (3.3) extending from the lateral surface of the bolt, the facing surface of which strikes upon axial movement of the bolt (3).

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