EP1057962A2 - Plastic window frame section member, wing and corresponding window - Google Patents

Abstract

The plastic window frame profile (100), in particular, for cellar windows has a basically U-shaped cross section whose side elements (101a, 101b) form a pane groove (106), with a channel (111) for a bearing journal located between the pane groove and the profile base (102). A reinforcing chamber (108) - in particular, one with a rectangular cross section - is located between the channel (111) and the pane groove (106). Also claimed are a pivotable ventilation unit with the proposed frame profile, a window incorporating such a unit, and a method for producing the latter.

Description

The invention relates to a window frame profile made of plastic, especially for a basement window, according to the generic term of Claim 1 and one of such window frame profiles manufactured rotating fan blades and finally a window with such.

Especially for basement windows, but also for windows of outbuildings or possibly also adjoining rooms Need for simple and inexpensive designs that nevertheless at least the best possible exposure of the corresponding Must ensure spaces and if possible should meet other requirements.

There are a variety of solutions known for this Fixed glazing up to use is relatively complex constructed living room window is enough.

Fixed glazing, d. H. Windows without one the window pane surrounding frame that can be pivoted or tilted with it, ensure a large light entry opening, based on the Cross-section of the wall opening, but do not allow window ventilation the corresponding rooms. Basement window with one Metal frame profiles can be opened and usually in lock multiple opening positions and also offer a large light entry opening, but form cold bridges between the outside and inside of the building and are relative expensive. The use of living room windows in the basement and outbuildings is not only disproportionately expensive, but in view of the mostly reduced wall opening cross sections on the one hand and the relatively wide casement on the other hand, unsatisfactory results in terms of Exposure of the corresponding rooms.

From DE-U-295 22 032 is a window of the generic type known, which is intended in particular for use as a basement window and has a plastic profile as a frame. This protects the edges of the window pane and enables attachment of trunnions and a locking handle, with which are executed a pivotable window to open can. This construction is suitable for smaller wall openings, but in terms of their scope, specifically for larger wall openings, as well as certain Usage properties still room for improvement.

The invention is therefore based on the object of an improved Window frame profile of the generic type with extended area of application and improved utility values as well as a rotary fan with such a window frame profile and finally a window, especially a basement window, to specify with such a rotary fan.

This object is achieved according to a first aspect of the invention a window frame profile with the features of claim 1, according to a second aspect by a rotary fan blade with the Features of claim 7 and according to a third aspect solved a window with the features of claim 12.

The invention initially includes the essential idea a plastic window frame profile with a multi-chamber structure To provide that for both reinforcement and is also designed storage elements and therefore in more flexible Way can be completed by such elements to Rotary fan blades in larger dimensions and with a high user value to execute. It continues to close the thought a, for this the mentioned chambers or channels of the profile - in Direction from the base to the top edge of the profile - in arrange multiple levels one on top of the other specifically are functionalized. Here, the bottom near the base includes Level in a manner known from the cited document Bearing channel, a second level has smaller channels, in the side screws for attaching hardware components can intervene and a third, adjacent to the glazing edge provided level comprises a reinforcement chamber into which a metal reinforcement that stabilizes the plastic frame can be inserted. This functional assignment of the different Chamber or channel levels are advantageously secured Way the above-mentioned completion with reinforcement and / or Storage elements without certain functional Combinations should be excluded from the outset.

In one for large and / or through multiple glazing or burglar-resistant glazing suitable for heavy window sashes Execution of the proposed window frame profile is in the Reinforcing chamber, in particular essentially continuous, Band iron with a rectangular cross-section and the reinforcement chamber adjusted dimensions inserted.

In a further advantageous embodiment is in a profile flank a sealing groove for inserting a lip seal with high form and material elasticity provided, and in one expedient training of this version is the lip seal made of rubber or another soft elastomer in the prefabricated profile already used.

Also preferred is an embodiment in which the profile base a sealing lip made of rubber or another sufficient deformable elastomer is extruded.

Another preferred embodiment comprises on both sides of the Pane channel to accommodate the glazing a side chamber, in particular with a rectangular cross section, to increase the Bending and form rigidity of the profile even without an inserted one metallic reinforcement elements.

A rotating fan wing with the proposed window frame profile used in its various advantageous versions has single or multiple glazing in addition to the profile on.

A particularly simple assembly with high accuracy of fit results when cut into those for a rotary fan blade Profile parts at the corners each have a plastic bracket (in particular again made of PVC) and with a suitable adhesive is fixed. This configuration enables the waiver of special devices or other Aid for a precise assembly, with minimal additional material costs.

In a version suitable for high loads is rectangular in the gain chambers of at least two of the abutting window frame profiles a band steel angle inserted. This version is particularly stable, if this steel angle into the bearing journal Profile engages and also with the plastic profile is screwed.

weiche" Isolierverglasung aufgesteckt und mit einem Klebeband fixiert und dann für eine Dauer von ca. 3 Stunden liegend gelagert. Danach kann der fast fertige Drehlüfterflügel (bei dem nur noch die Beschlagteile zu ergänzen sind) stehend auf Transportgestellen zum Versand gebracht werden.In an advantageous handling in the production of a rotating fan wing equipped with insulating glass, the window frame profiles are connected to the edge bond of the insulating glass in the soft state without an additional adhesive. On the one hand, this eliminates the waiting time until the insulating glass two-component adhesive has hardened before it is inserted into the window frame profiles.Furthermore, fitting problems due to the edges of the insulating glazing, which are always somewhat uneven in practice, are avoided, and finally the use of only one adhesive leads to the production of the insulating glass composite and for bonding the frame profiles for an improved resistance of the rotary fan wing to temperature changes. In addition, the rotating fan blade can be transported more quickly. The profile parts are on the still

Soft "double glazing attached and fixed with an adhesive tape and then stored lying for a period of about 3 hours. After that, the almost finished rotating fan blade (in which only the fittings need to be added) can be shipped upright on transport racks.

A particularly simple and inexpensive implementation of a Rotation or swivel mounting is possible in one version, at the opposite ends of the trunnion channel one of the four window frame profiles surrounding the glazing (through a corresponding hole in the neighboring Profile part) driven a journal made of round steel is that by a predetermined amount above the respective Projecting end of the profile. In one using the suggested Rotary fan wing realized windows - in particular Basement window - in which the rotating fan wing can be swiveled in a frame or a savings or frame is used, are the trunnions in one with the upper or lower part the frame or the savings or frame connected Bearing part used. The bearing part is particularly inexpensive Executed as a plastic injection molded part and on screwed on the frame or the savings or frame.

The rotary fan blade points in the closed position for locking one especially laterally in the area of the screw channel that profile part screwed window handle on which opposite the bearing part supporting the bearing part. Also the window handle is particularly inexpensive as a plastic injection molded part - just like the window frame profile and the above-mentioned bearing parts on the savings or Frame especially made of PVC.

Advantageously, one of the above-mentioned profile parts with a sealing lip extruded onto the base is used to form the frame of the rotary fan blade. This sealing lip cooperates particularly advantageously with a water collecting channel placed on a lower flange of the frame or the lower part of the saving frame or frame, which is used to collect and drain condensate and is designed in a particularly robust and cost-effective design as a plastic L-profile. The above-mentioned extruded sealing lip then strikes the upstanding leg of the inside of the building L "and covers it at least in some areas. This provides an additional seal and the optical impression of the window is further improved.

The aforementioned water collection channel in the form of an L-profile has in the other useful side effect is that when opening slightly lower rotating fan blades with suitable positioning of the rotary fan wing relative to the L-profile when closing with decreasing opening angle on the upstanding leg of the L-profile runs continuously and thereby automatically into the correct closing position is brought. Here is also the quarter circle rounding between the base and the Flanking the profile in a useful way.

In a further advantageous embodiment, the proposed Window, especially on the upper or lower flange of the Inner part of the window frame or on the upper or lower part of the Saving or frame, a lock to lock the Rotary fan blade rotatable in at least one open position supported. This lock engages in or on the upper or lower window frame profile part - for example, by an am Lock provided in a pin in the profile part introduced hole engages. In an advantageous training the lock is designed to be flexible, so that it is pressed against the window frame profile part with which he cooperates.

Furthermore, a parallel to the proposed window Movable vermin protection can be provided on the inside wall especially in an open position in the open area the window is moved in and also in this position effectively prevents small animals, vermin, etc. from entering.

Fig. 1

einen Querschnitt einer Ausführungsform des erfindungsgemäßen Fensterrahmenprofils in Verbindung mit einem Sparrahmen,

Fig. 2

eine Querschnittsdarstellung des in Fig. 1 gezeigten Fensterrahmenprofils in Verbindung mit einem Blendrahmen,

Fig. 3

eine Querschnittsdarstellung des in Fig. 1 gezeigten Fensterrahmenprofils in Verbindung mit einer Kellerfenster-Zarge,

Fig. 4a - 4d

eine Seitenansicht bzw. eine Draufsicht eines Fenstergriffs bzw. einer zugehörigen Griffplatte in einer Ausführungsform zum Einsatz beim erfindungsgemäßen Drehlüfterflügel,

Fig. 5a und 5b

eine Seitenansicht bzw. eine Draufsicht eines ersten Lagerteils zur Lagerung eines Drehlüfterflügels an einer Zarge bzw. einem Spar- oder Blendrahmen,

Fig. 6a und 6b

eine Seitenansicht bzw. eine Draufsicht eines zweiten Lagerteils zur Lagerung eines Drehlüfterflügels an einer Zarge bzw. einem Spar- oder Blendrahmen und

Fig. 7a-7f

verschiedene Ansichten bzw. Detaildarstellungen einer Ausführungsform eines Feststellers des erfindungsgemäßen Fensters.

Advantages and practicalities of the invention result from the subclaims and the following description of a preferred embodiment with reference to the figures. Of these show:

Fig. 1

2 shows a cross section of an embodiment of the window frame profile according to the invention in connection with an economy frame,

Fig. 2

1 shows a cross-sectional illustration of the window frame profile shown in FIG. 1 in connection with a window frame,

Fig. 3

1 shows a cross-sectional illustration of the window frame profile shown in FIG. 1 in connection with a cellar window frame,

Figures 4a - 4d

a side view or a plan view of a window handle or an associated handle plate in one embodiment for use in the rotary fan wing according to the invention,

5a and 5b

a side view or a plan view of a first bearing part for mounting a rotary fan wing on a frame or a savings or frame,

6a and 6b

a side view or a plan view of a second bearing part for mounting a rotary fan wing on a frame or a savings or frame and

Figures 7a-7f

Different views or detailed representations of an embodiment of a lock of the window according to the invention.

1 shows a window frame profile 100 of a basement window in connection with a savings frame 200. The savings frame 200 here comprises an essentially L-shaped PVC profile part 201 with a continuous, in essential T-shaped recess 202 and a drainage opening 203, on which is also an L-shaped PVC profile part 204 glued on by means of a double-sided adhesive tape 205 is. The second L-profile 204, which together with it facing surface of the standing leg of the first L-profile 201 forms a water collection channel 206 is also with a silicone layer 207 opposite the first L-profile 201 sealed. Things accumulating in the water collecting channel 206 Condensed water becomes via the drainage opening 203 Derived from the outside of the building.

The window frame profile 100 essentially has a cross section U-shaped contour with two profile flanks 101a, 101b and a profile base 102 running perpendicular to these Window frame profile 100 is extruded from PVC, and to the profile base 102, a rubber sealing lip 103 is extruded. In the Profile flank 101a has a continuous sealing groove 104, into a lip seal that is approximately T-shaped in cross section 105 is inserted. Two small (not specifically identified) Projections on the sealing groove 104 act with two barb-like (also not separately identified) Projections on the lip seal 105 and a cavity 105a in this together so that an indentation of the lip seal 105 easily possible in the sealing groove 104, falling out the seal from the groove but practically impossible becomes. The separately manufactured lip seal 105 also exists like the extruded sealing lip 103 made of rubber or alternatively made of another soft elastomer.

The interior 106 of the U-shaped window frame profile 100, which is open at the top, receives the window pane or glazing. A side chamber 107a, 107b is also provided between this interior space, which is also referred to below as a disk groove 106, and the two profile flanks 101a, 101b, which, on the one hand, serves to realize a predetermined outer width of the window frame profile and, on the other hand, increases the bending and torsional rigidity of the profile. Below the bottom 106a of the disk groove 106 and above the sealing groove 104, a reinforcing chamber 108 with a substantially rectangular cross section is incorporated into the profile 100, into which a band iron 109 is inserted or - in the corner regions - a PVC angle is glued. Below the reinforcement chamber 108, at the same height as the sealing groove 104, two adjacent, flat, rectangular channels 110a, 110b are worked out, which are summarized below as Screw channel "because, if necessary (as will be explained in more detail below), screws for fastening fitting parts are driven in laterally. Below the screw channel 110a, 110b there is finally a square bearing journal channel, which is delimited at the bottom by the profile base 102 in the center of the profile cross section 111 for receiving round steel segments 112 serving as bearing journals for realizing a rotary fan wing; cf. also the more detailed description below. On both sides of bearing journal channel 111 there is also a side channel 113a, 113b with an approximately quarter-circular cross section, these side channels essentially to save weight and material of the profile 100 are provided.

Fig. 2 shows that already shown in Fig. 1 and in more detail above described window frame profile 100 in connection with a Window frame 300. The window frame profile is therefore in Fig. 2 in its parts are not provided with individual reference numerals and is not described again below. In the figure are only the separate parts sealing lip 105, band iron 109 and Bearing journal 112 is again highlighted by reference numbers.

The frame 300 consists of a complex shaped PVC profile 301, the structure of which is not the subject of the invention and is therefore not further described here. Just like the 1 is on the lower part of the frame 300 a PVC-L profile glued on, here with the number 304 is labeled and together with the opposite rising profile part of the profile 301 a water collection channel determined, designated by the number 306 in analogy to FIG. 1 is. The frame 300 also has a drainage opening 303 on that accumulated in the water collection channel 306 Condensed water first into a frame water channel 308 and from there through a drainage hole 309 finally leads to the outside.

3 is the same window frame profile 100 as in FIG. 1 and 2 shown in connection with a basement window frame 400, and here too are its parts - apart from those inlaid Additional parts sealing lip 105, band iron 109 and round bar segment 112 - not individually numbered.

The basement window frame 400 comprises as essential components a steel sheet outer frame 401 and an inner frame 402 multi-layer glued wooden panels. The exact structure is not The subject of the invention explained here and therefore is not further described. On the lower flange of the inner frame 402 to a peripheral edge 401a of the steel sheet outer frame 401 nudging that already described above and here - in Based on the designation in Figures 1 and 2 - with the Number 404 labeled PVC-L profile stuck on. The L profile 404 forms one with the edge region 401a of the outer frame 401 here with the number 406 designated water collection channel for Condensate that flows through a PVC pipe 403 to the outside of the building is drained out.

In all three installation situations shown in Figures 1-3 enables the profile side to be provided in the sealing groove 104 inserted lip seal 105 the waiver of frame or Sealing strips on the frame side. The extruded lip seal 103 acts with the upstanding leg of the frame or L-profile attached on the frame side as water and Windproofing and vermin protection together and also causes an optical upgrade of the inside of the window. That in the Band iron 109 shown in the figures can in particular also be a Section of one in two abutting at right angles Profile parts inserted steel angle with which the Load capacity of the frame profile for large and heavy Glazing is significantly improved.

4a-4d are a grip piece 510 or a grip plate 520 of a window handle 500 in one embodiment of the rotary fan blade according to the invention shown.

The in the top view (Fig. 4d) substantially rectangular and in the side view (Fig. 4c) in adaptation to the edge curvature the window frame profile 100 (Fig. 1-3) curved handle plate 520 has two bores 521 with reinforced edge 521a and a screw head countersink 521b for attachment by Screwing into the screw channel 110a, 110b of the window frame profile 100 (Fig. 1) by means of countersunk screws. In the The handle plate 520 has an upstanding center plane Cylinder extension 522 with a central bore 523, which in a corresponding cylindrical recess 511 in one also cylindrical middle part 512 of the handle 510 fits. This cylindrical middle part 512 also has a - with the number 513 - centric bore, which at mounting the handle 510 on the handle plate 520 in Alignment with the handle bore 523 is brought. Then a countersunk screw in the holes 513, 523 screwed in, so that the handle and the handle plate together get connected. When connected, form the cylindrical Extension 522 and the cylindrical recess 511 Pivot bearing for the handle 510 on the handle plate 520 Handle 510 is, as can best be seen in FIG. 4b, essentially L-shaped with a handle leg 514 and one Latch 515 formed. The latch 515 engages in the closed position of the rotary fan blade in an appropriate undercut or a locking element on the basement window frame or the saver or frame, whereby the rotary fan wing is kept closed. If the handle 510 in contrast from the frame or frame-side recess or Swiveled out locking element, so the locking lug comes 515 with the frame or the frame out of engagement, and the Rotary fan blades can be compared to the frame or the frame turn to an open position.

The bearing parts for storing the rotary fan blade according to the invention in a preferred embodiment are in Fig. 5a and 5b and Fig. 6a and 6b. 5a and 5b show the Side view or top view of a first bearing part 610, 6a and 6b show side and top views of a second bearing part 620. In both bearing parts 610, 620 are with Countersunk screw holes 611 and 621 for screwing to the upper or lower part of an inner frame or a savings or. Frame (as shown in Fig. 3 or Fig. 1 or 2) intended. The first bearing part 610 has one with a reinforced one Bore 613 provided with edge 612 and second bearing part 620 a recess 622 ending in a semicircle for engagement one bearing pin each of a rotary fan blade (section 112 in Fig. 1, 2 or 3).

The bearing parts 610, 620 face each other preferably on the upper and lower part of an inner frame or one Saving or blind frame screwed so that the in the hole 613 or the recess 622 engaging bearing journal vertical axis of rotation of the rotary fan wing laterally in the frame or define in the frame. Alternatively, the bearing parts 610, 620 also on the side parts of an inner frame or a savings or Frame are screwed, with which a tilt window or a tilt fan can be realized.

7a-7f is a simple and inexpensive embodiment a lock 700 for a rotary fan blade according to the invention shown. Most clearly as Fig. 7e and 7f show, the lock 700 consists of one with a Spring steel band iron 702 provided and rounded at the ends 701, near one end of which a bore 703 and a pin 704 is provided near the other end thereof.

As shown in Figs. 7a-7d, the lock 700 is shown here Version shown rotatable on the upper part of a savings frame 200 screwed and engages with pin 704 in a bore 114 in a window frame profile 100.1, which together with three other similar profiles and glazing 800 forms a rotary fan blade 900. The bore 114 is approximately introduced in the middle of the profile part 100, that is in the Bearing channel 111 (Fig. 1). In this engagement position 7d shows, the rotary fan blade 900 in one Opening position perpendicular to the level of the savings frame 200 held. One laterally in the side channel 113a (Fig. 1) of the Window frame profile 100 introduced recess 115 serves as is best seen in Fig. 7c, as a space for the Bearing pin 704 of the lock 700 in the closed position of the Rotary fan wing 900. The lock 700 is material and Geometry side executed so that it with a force of 1 kp presses on the upper edge of the window frame profile 100, so that the pin 704 in the open position of the rotary fan blade 900 securely held in bore 114 and thus the rotary fan blade is reliably locked.

In a somewhat more complex (not shown here) Execution can also use a handle for have easier handling. Instead of a frame top the lock can in principle also on one Lower part should be attached, provided the material and formula elasticity with this attachment a reliable locking of the Rotary fan wing secures in the open position. Furthermore can move several in the longitudinal direction on the window frame profile Bores may be provided in the rotary fan blades to lock different opening angles. Alternatively to Providing multiple holes in the window frame profile is also the lock can be designed with several pins.

In addition, the implementation of the invention is not based on that Embodiment described above limited, but in a large number of which are readily apparent to the person skilled in the art Modifications possible.

Reference list

100

Window frame profile

101a, 101b

Profile flank

102

Profile base

103

extruded sealing lip

104

Sealing groove

105

inlaid lip seal

106

Washer groove

106a

ground

107a, 107b

Side chamber

108

Reinforcement chamber

109

Band iron or angle

110a, 110b

Screw channel

111

Bearing channel

112

Round bar segment (journal)

113a, 113b

Side channel

114

drilling

115

lateral recess

200

Savings frame

201

(first) L profile

202

T-shaped recess

203

Drainage opening

204

(second) L-profile

205

double sided tape

206

Water collecting channel

207

Silicone sealing

300

Frame

301

Frame profile

303

Drainage opening

304

L-profile

308

Frame water channel

309

Drainage hole

400

Basement window frame

401

Sheet steel outer frame

401a

surrounding border

402

Inner frame

403

PVC pipe

404

PVC-L profile

406

Water collecting channel

500

Window handle

510

Handle

511

cylindrical recess

512

cylindrical middle part

513

drilling

514

Grip arm

515

Latch

520

Grip plate

521

drilling

521a

reinforced edge

521b

Lowering

522

Cylinder extension

523

drilling

610

first bearing part

611

Screw hole

612

reinforced edge

613

drilling

620

second bearing part

621

Screw hole

622

Recess

700

Lock

701

Spring steel band

702

Cranking

703

drilling

704

Cones

800

glazing

900

Rotary fan blades

Claims (19)

Window frame profile (100) made of plastic, in particular for a basement window, with an essentially U-shaped cross-sectional shape, in which profile flanks (101a, 101b) determine a pane groove (106) between them and between the pane groove and a profile base (102 ) a trunnion channel (111) is provided,
marked by
a reinforcement chamber (108), which is in particular rectangular in cross section, is provided between the bearing journal channel and the disk groove. Window frame profile according to claim 1,
marked by
a band iron (109) inserted into the reinforcement chamber (108), which is in particular screwed to the window frame profile. Window frame profile according to claim 1 or 2,
marked by
a sealing groove (104) open towards a profile flank for inserting a lip seal (105). Window frame profile according to claim 3,
marked by
a lip seal (105) inserted into the sealing groove (104), in particular made of rubber or another soft elastomer, with a substantially T-shaped cross section. Window frame profile according to one of the preceding claims,
marked by
a sealing lip (103) extruded onto the profile base (102) and pointing in the direction opposite the disk groove (106), in particular made of rubber or another soft elastomer. Window frame profile according to one of the preceding claims,
marked by
A side chamber (107a, 107b) provided on each side of the disk groove (106), in particular with a rectangular cross section, to increase the bending and torsional rigidity. Rotary fan blades (900), especially for a basement window, with four right-angled window frame profiles (100) according to one of the preceding claims and one in the disk grooves (106), in particular using only a two-component silicone material glued in, single or multiple glazing (800). Rotary fan blade according to claim 7,
marked by
at least one PVC or steel angle (109) engaging in the reinforcement chambers (108) of two joined window frame profiles (100), which is in particular glued and / or screwed to the window frame profiles. Rotary fan blades according to claim 7 or 8,
marked by
two round steel segments (112) driven into the bearing channel (111) at the opposite ends of one of the four window frame profiles (100) and projecting as rotary fan bearings by a predetermined amount above the respective profile end. Rotary fan blade according to one of claims 7-9,
characterized,
that one of the window frame profiles (100) has an extruded sealing lip (103). Rotary fan blade according to one of claims 7-10,
marked by
a window handle (500) screwed laterally in the area of a screw channel (110a, 110b) to one of the four window frame profiles (100), in particular essentially made of injection molded plastic. Method for producing a rotary fan blade according to one of claims 7-11 with multiple glazing,
characterized,
that the multiple glazing (800) is connected to the window frame profiles (100) in the uncured state of the edge-side gluing, in particular of a two-component silicone material, in such a way that when the edge gluing subsequently hardens, the window frame profiles are glued at the same time. Windows, especially basement windows, with a rotating fan (900) according to one of claims 7-11 and a frame (400) or a savings or frame (200, 300), in the or that the rotating fan blade is pivotally inserted. Window according to claim 13,
marked by
A bearing part (610; 620) connected to the upper and lower part of the frame (400) or the saving or frame (200, 300), in particular designed as a plastic injection-molded part, for receiving the respective rotary fan bearing journal (112). Window according to claim 13 or 14,
marked by
a lock (700) rotatably connected to the upper part of the frame (400) or the saving frame or frame (200, 300) for locking the rotary fan blade (900) in at least one predetermined opening position. Window according to claim 15,
characterized,
that the arrester (700) has a spring steel band (701) with a pin (704) designed to engage in an outer edge bore (114) in the upper or lower window frame profile (100) of the rotary fan wing (900). Window according to one of claims 13-16,
marked by
an anti-vermin grille or net that can be moved along the inner wall of the building. Window according to one of claims 14-17,
marked by
a water collecting channel (206; 306; 406) made of a plastic L-profile (204; 304; 404) on the lower part of the frame (400) or the savings and blind frame (200, 300), on which the rotary fan blades in particular (900) comes up when closing. Window according to one of claims 15-17 and claim 18,
characterized,
that the extruded sealing lip (103) and the L-profile (204; 304; 404) are designed so that they are coordinated with one another in such a way that when the rotating fan blade is closed, the sealing lip lies against the inside of the L-profile and at least partially covers it.

Images