Lamella roof

Abstract

A louvered roof has a horizontally oriented frame in which a number of louvers (10, 12) are pivotable by more than 90° between a closing position of the louvered roof (100) and an open position, wherein a synchronization device synchronizes the movement of all louvers (10, 12) and an electric drive motor (14) is provided in at least one of the louvers (10), the motor head (16) of which is fixed to the frame via a bearing element (36) with a bearing block (56) and whose output shaft (72) is coupled to the driven louver (10).In order to reduce noise generation, unwanted bouncing and jerky movements when pivoting the lamellae past their top dead center, it is proposed that the bearing block (56) and the bearing element (36) are coupled without play via a force-fit, form-fit or material-fit connection (at 48) and / or that the output shaft (72) is coupled to the lamella (10) via at least one force-fit, form-fit or material-fit connection (at 76).

Description

[0001] According to the preamble of claim 1, the invention relates to a louvered roof with a horizontally oriented frame in which a number of louvers are pivotable by more than 90° between a closing position of the louvered roof and an open position, wherein a synchronization device synchronizes the movement of all louvers and an electric drive motor is provided in at least one of the louvers, the motor head of which is fixed to the frame via a bearing element with a bearing block and the output shaft of which is coupled to the driven louver.

[0002] Such a louvered roof is known from WO 2019 / 186213 A1. This solution has the advantage that the motor can be discreetly arranged inside one of the louvers. The rotation of the driven louver is transmitted to the other louvers via a suitable transmission, e.g., by means of gears, push or pull elements.

[0003] The louvers can be pivoted from a horizontal position, in which they overlap and thus form a closed roof, to an open position. Ideally, they should be able to pivot beyond the vertical position so that they can be inclined in different directions. It has now been observed that when the system passes the dead center, which is generally defined by the vertical position of the louvers, the assembly of all louvers undergoes a noisy load change due to the instantaneous reversal of forces in the drive train. Because of the considerable mass of the louver assembly and the large sound-emitting surfaces, this is perceived by the user as disturbing or even threatening when it occurs.

[0004] This problem occurs in principle with many types of louvered roofs whose louvers have a common pivoting drive, but has proven to be particularly serious with a drive integrated into a louver.

[0005] Examples of other louvered roofs are known, for example, from FR 2 987 061 A1, EP 3 438 371 B1 or DE 10 2016 117 772 A1.

[0006] The object of the present invention is to improve a louvered roof of the type mentioned above in such a way that the noise generation of the louvered roof during load changes is reduced.

[0007] According to the invention, the problem is solved by an awning of the type mentioned above, in which the bearing block and the bearing element are coupled without play via a force-fit, form-fit or material-fit connection.

[0008] The solution according to the invention offers the advantage of improved noise characteristics when passing over the dead center. Undesirable bouncing and jerky movements are also avoided.

[0009] This measure can include, for example, the one-piece formation of previously separate elements, or the welding, soldering, gluing, screwing, positive-locking connection, pressing, or clamping of adjacent elements located in the force flow, or it can consist of omitting certain parts in the force flow to avoid connection points. The clamping of two adjacent elements can be achieved by having a first element made of multiple parts, and the other element clamped between clamping surfaces on the parts of the first element, for example, by means of clamping screws.

[0010] As mentioned, even a single measure at one point leads to an improvement in noise behavior; however, the more connection points are revised according to the previously discussed criteria, the better the overall noise behavior will ultimately be.

[0011] In a preferred embodiment of the invention, it is provided that the play of all parts of the synchronization device lying in the force flow between the driven lamella and the other lamellae is reduced to a technically meaningful minimum.

[0012] It goes without saying that when optimizing the drive vane, the entire vane assembly should not be disregarded, even though the greatest improvements in noise reduction can be achieved in the area of ​​the driven vane.

[0013] The following section presents specific individual measures that can achieve particularly good noise reductions.

[0014] For example, the bearing element may be designed to be integral with the motor head or to be pressed, welded, glued, or inserted as a separate element with the motor head via a backlash-free fit.

[0015] It has proven particularly advantageous that the bearing block has at least two clamping elements between which the bearing element is clamped.

[0016] Another advantageous measure concerning the bearing block can consist of connecting the bearing block to the frame via a positive-locking connection, for example, by guiding the bearing block without play in an undercut groove that is arranged perpendicular to the slat rotation axis in the frame. However, a screw connection is usually sufficient.

[0017] Generally speaking, measures in the area of ​​the motor head and the bearing block are particularly effective because the output shaft is located at a relatively large distance in the plate, resulting in unfavorable lever arm conditions at these points.

[0018] Another area of ​​the drivetrain that has not yet received attention with regard to noise reduction is the motor's output shaft. Preferably, the output shaft is coupled to the lamella via at least one friction-fit, form-fit, or material-fit connection point, ensuring zero backlash.

[0019] Each individual measure to reduce or eliminate play between elements in frictional engagement between the bearing block fixed to the frame and the driven lamella is suitable for achieving an improvement in noise behavior, whereby the person skilled in the art can decide, with this requirement, at which point he takes which individual measure, taking into account costs, technical functionality as well as assembly and maintenance specifics.

[0020] In the motor itself, any existing reduction gears can be optimized with regard to play, but this is usually not within the reach of the designer of a louvered roof.

[0021] The following measures can help reduce play in the area of ​​the motor output.

[0022] For example, it may be provided that a driver is located on the output shaft of the motor, with a first connection point designed to be force-fit, form-fit or material-fit.

[0023] The drive element can also be multi-part and clamped to the output shaft.

[0024] On the other hand, with regard to the force flow, the drive element can preferably be coupled to a motor housing that is positively fitted into the lamella without play, or directly to the lamella via a force-fit, form-fit, or material-fit connection point. This, in turn, can be achieved by screwing, pinning, welding, or bonding the drive element to the motor housing or directly to the lamella.

[0025] In a further preferred embodiment of the invention, the lamella is provided with an end cap at its motor-side end. This measure, known as such, contributes less to noise reduction, but allows the lamella to be designed as a hollow profile to accommodate the drive motor.

[0026] Depending on the design of the driven vane, with or without a motor housing, it is preferred that the motor housing or the vane is pivotally mounted on the motor head and / or on the bearing element via a rotary bearing. Mounting on the bearing element is preferably achieved via the aforementioned side panel / end cap.

[0027] Further features, details and advantages of the invention will become apparent from the wording of the claims and from the exemplary embodiment described below with reference to the drawing. The drawing shows: Fig. 1 is an exploded view of a driven slat of a louvered roof; Fig. 2 is an oblique view of the output end of a drive motor; Fig. 3 is an oblique view of a bearing of the driven slat according to Fig. 1 with adjacent louvers of the louvered roof.

[0028] In Fig. 1 is a driven louver 10 of a louvered roof 100 (see Fig. 3 The louvered roof, as it is known, is not shown here and is only briefly described. It essentially consists of a rectangular frame, which is supported on columns and / or attached laterally to building components or walls. Within the frame opening is a composite of a plurality of louvers 10, 12 (see Fig. 3The louvers are arranged in a pivotable manner on the frame and can be pivoted synchronously from a horizontal position forming a closed roof to an open end position; any intermediate positions can also be reached. For this purpose, a drive motor 14 is provided, which, in the embodiment presented here, is mounted on the frame with a motor head 16 and projects into the driven louver, which is designed as a hollow profile.

[0029] The fixed motor head 16 has the advantage that the connecting cables can be guided into the motor without movement and are not subject to any movement when the slats pivot. The motor 14, with a tubular body 18 that is rotationally fixed to the motor head 16, projects far into the slat 10. A motor housing 20, designed as a hollow profile, e.g., in the form of an extruded profile, is rotatably mounted on the motor head 16 / tubular housing. This housing fits snugly in the slat 10, which is also designed as a hollow profile, in the direction of rotation. The corresponding shape of the outer profile of the motor housing and the inner profile of the slat 10 allows for insertion.

[0030] The lamella 10 is screwed to an end cap 22 at its end face. First fastening screws 24 engage in screw channels 26 in the hollow profile of the lamella 10, while second fastening screws 28 are screwed into screw channels 30 in the hollow profile of the motor housing 20, thus forming a composite of lamella 10, end cap 22, and motor housing 20. This composite is rotatably mounted on a bearing element 36 by means of a bearing ring 32, which is inserted into an opening 34 in the end cap 22. The bearing ring also seals the interior of the lamella against the ingress of moisture.

[0031] A pivot pin 38 is provided on the end cap 22, which is connected by means of push rods (not shown) to pivot pins 40 on end caps 42 of the non-driven, driven lamellae 12, so that a lamella assembly designed for joint giving is created.

[0032] The bearing element 36 is shown here as a possible example of a component formed separately from the motor head 16, but it can also be formed integrally with the motor head 16. In the illustrated embodiment, the bearing element 36 is formed with a motor-side insertion pin 44, a cylindrical central section 46, and a bearing pin 48.

[0033] The central area has a cylindrical outer surface 50, which together with an inner surface of the bearing ring 32 forms a sliding bearing.

[0034] The motor-side insertion pin 44 is designed as a polygonal profile and is inserted into an opening in the motor head 16 with a corresponding, low-play opening cross-section. The bearing element 36 is secured by means of two screws 52, which engage through axially aligned bores 54 in the central area 46 and are screwed into threaded bores in the motor head 16. This results in a backlash-free fastening of the bearing element 36 to the motor head 16 even if there is play in the fit between the motor-side insertion pin 48 and the opening in the motor head 16.

[0035] As from Fig. 3 As can be clearly seen, the bearing journal 48, which protrudes beyond the end cap 22, is fixed in a bearing block 56, which here is formed in two parts. For this purpose, the end of the bearing journal 48 is clamped between a clamping bracket 58 and a lower part 60 of the bearing block 48 by means of clamping screws 62.

[0036] The bearing block 56 itself is screwed to the frame (not shown) and can be guided in an undercut groove, e.g. in a dovetail groove.

[0037] In Fig. 3 The previously mentioned pivot pins 38, 40 can also be seen, which are connected to each other via push rods (not shown), whereby a single continuous push rod with corresponding bearing openings can also be provided for connecting all slats of the louvered roof 100, so that all slats 12 together with the driven slat 10 are pivoted when the motor 14 is actuated.

[0038] The lamellae 10, 12 form a rainproof, watertight roof by having a drainage channel 64 on one longitudinal side and a roof-like projection 66 on the other longitudinal side, which, in the closed state of the lamella roof 100, overlaps the drainage channel 64 of the adjacent lamellae 10, 12, so that any precipitation that occurs can be safely drained into the drainage channels 64 and from there into lateral drainage channels (not shown) in the frame.

[0039] The roof-like projections 66 also form a stop for the closed position of the lamella roof 100 by resting on lateral walls 68 of the drainage channels 64 of the respective adjacent lamella 10, 12.

[0040] In the opposite end position of pivoting the lamellae 10, 12 by approximately 135°, a further stop (not shown) may be provided.

[0041] In Fig. 2Finally, the output end of the drive motor 14 is shown. Here, a drive coupling 70 is mounted on an output shaft 72 of the motor 14. To prevent play, which can be detrimental to noise generation, the drive coupling 70 is screwed onto the output shaft 72 with a clamping screw 74. The drive coupling can also be split, in which case the output shaft can be clamped between the parts using a suitable clamping mechanism. If assembly or a desired disassembly option allows, the drive coupling can also be formed integrally with the output shaft or welded, bonded, pinned, or pressed to it.

[0042] The torsionally rigid connection of the driver 70 to the motor housing 20 or directly to a suitable inner cross-section (not shown) of the lamella 10 can be effected by radially oriented screws (not shown) which penetrate a cylindrical wall (also not shown) as part of the structure of the motor housing 20 or the lamella 10 and are screwed into radial threaded bores 76.

[0043] Out of Fig. 3The pivoting mounting of the non-driven lamellae 12 via pivot bearing pins 78 is also visible, although their bearing mounts are not shown for clarity, especially since the mounting is of a known type and is not critical for noise generation when suitable commercially available bearings are used. A corresponding pivoting bearing is also provided at the opposite, not shown, ends of the lamellae, including the driven lamella 10, since the torque of the drive motor 14 is supported on only one side.

[0044] The invention is not limited to one of the embodiments described above, but can be modified in many ways. Reference symbol list

[0045] 10 Driven blade 12 Blade 14 Drive motor 16 Motor head 18 Tube body 20 Motor housing 22 End cap 24 First mounting screws 26 Screw channels (blade) 28 Second mounting screws 30 Screw-in channels (motor housing) 32 Bearing ring 34 Bearing opening 36 Bearing element 38 Ball joint 40 Ball joint 42 End cap 44 Insert pin 46 Cylindrical center section 48 Bearing pin 50 Cylindrical outer surface 52 Screws 54 Axial bores 56 Bearing block 58 Clamping bracket 60 Lower part 62 Clamping screws 64 Drainage channel 66 Roof-like projection 68 Side wall 70 Drive pin 72 Output shaft 74 Clamping screw 76 Radial threaded holes 78 pivot pins 100 louvered roof

Claims

1. Lamella roof with a horizontally oriented frame, in which a number of lamellae (10, 12) can be pivoted by more than 90° between a position closing the lamella roof (100) and an open position, wherein a synchronization device synchronizes the movement of all lamellae (10, 12) and in at least one of the lamellae (10) an electric drive motor (14) is provided, the motor head (16) of which is fixed to a bearing block (56) on the frame via a bearing element (36) and the output shaft (72) of which is coupled to the driven lamella (10), characterized in that the bearing block (56) and the bearing element (36) are coupled without play via a force-fitting, form-fitting or material-bonded connection (at 48).

2. Lamella roof according to claim 1, characterized in that the bearing element (36) is formed in one piece with the motor head (16) or is screwed, pressed, welded or glued as a separate element to the motor head or inserted via a play-free fit.

3. Lamella roof according to claim 1 or 2, characterized in that the bearing block (56) has at least two elements, between which the bearing element (36) is clamped.

4. Lamella roof according to any one of claims 1 to 3, characterized in that the bearing block (56) is connected to the frame via a form-fitting connection.

5. Lamella roof according to claim 4, characterized in that the bearing block (56) is guided without play in an undercut groove which is arranged perpendicular to the lamella axis of rotation in the frame.

6. Lamella roof according to any one of the preceding claims, characterized in that the output shaft (72) is coupled without play to the lamella (10) via at least one force-fitting, form-fitting or material-bonded connection point (at 76).

7. Lamella roof according to any one of the preceding claims, characterized in that a driver (70) is positioned on the output shaft (72) of the motor, wherein a force-fitting, form-fitting or material-bonded first connection point (at 74) is provided.

8. Lamella roof according to claim 7, characterized in that the driver is formed from multiple parts and is clamped to the output shaft (72).

9. Lamella roof according to claim 7 or 8, characterized in that the driver (70) is coupled to a motor housing (20), which is fitted into the lamella (10) in a play-free, form-fitting manner, or coupled directly to the lamella (10) at a force-fitting, form-fitting or material-bonded connection point.

10. Lamella roof according to claim 9, characterized in that the driver (70) is screwed, pinned, welded or glued to the motor housing (20) or directly to the lamella (10).

11. Lamella roof according to any one of the preceding claims, characterized in that at least the lamella (10) provided with the drive motor (14) is provided with an end cap (22) on its motor-side end.

12. Lamella roof according to any one of the preceding claims, characterized in that the play of all parts of the synchronization device lying in the power flow between the driven lamella (10) and the other lamellae (12) is reduced to a technically reasonable minimum.

13. Lamella roof according to any one of claims 9 to 12, characterized in that the motor housing (20) or the lamella (10) is pivotably mounted on the motor head (16) and / or on the bearing element (36, 50) via a pivot bearing (32).

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