DE8902627U1 - Bearing, especially for the extension arm of a skylight opener - Google Patents

Abstract

So that one and the same bearing can be used for the wing end (14) of a swivel arm (4) of a wing (2), especially of a so-called skylight wing, irrespective of the height of a wing overlap (41 or 45), the bearing element (15) having a bearing journal (10) is held on a bearing part (12 or 13) so as to be displaceable transversely relative to the frame plane and lockable. According to the invention, the adjustment is carried out via a threaded connection (21), by means of which the bearing element (15) can be displaced in a transverse guide (16) of the bearing part (12 or 13) towards the wing (2) or away from this. Furthermore, the wing end of the swivel arm (4) can be coupled via an automatically acting journal-locking device (54) to the bearing journal (10) and be uncoupled from this as a result of the actuation of a release button (68). <IMAGE>

Description

17 870 B/va

Gretsch-Unitas GmbH Building fittings
Johann-Maus-St^aBs 3 725? Ditzingen

Bearing. especially for the extension arm of a skylight opener

The invention relates to a bearing for the sash-side end of an extension arm, in particular a scissor arm of a so-called skylight opener, with a bearing part that can be mounted on a sash, on which a bearing element is mounted in a transverse guide so that it can be moved and locked transversely to the frame plane, whereby a bearing pin of the bearing element can be coupled to the sash-side end of the extension arm. For the sake of simplicity, it is assumed below that this bearing is a bearing for a skylight opener, on which the extension arm, in particular of a so-called opening scissor, is mounted.

is guided, whereby this extension arm is detachably coupled. However, this is not seen as a limitation of the invention, but rather as a convenience which makes the explanation easier to understand based on the above-mentioned embodiment.

A skylight is understood to be a tilting sash, often located very high up in the room, which can usually be tilted about a lower horizontal axis and can be tilted and closed again by means of at least one opening device, preferably the aforementioned opening scissors, by operating a hand lever or a crank.

If the sash frame and thus usually also the frame or fixed frame are made of wooden profiles and are also equipped with a so-called overlap, the geometric bearing axis for the sash-side end of the extension arm must have a relatively short distance from the inner surface of the sash. This distance increases with frames made of profiles, particularly aluminum profiles. If instead you have a so-called smooth-opening sash, i.e. a sash without an overlap, the distance of the geometric axis from the inner surface of the sash is even greater.

In order to be able to take all these frame constructions into account, the bearing element of the previously known bearing is held on the bearing part so that it can be moved and locked across the sash or frame plane.

which is usually attached to the upper cross member of the wing. The bearing pin or a part with a reduced diameter at the lower end in the position of use engages in the cross guide. The locking is carried out with the help of a screw which is screwed axially into the bearing element, whereby the bearing part or its leg with the slot-shaped cross guide is then located between the head of the clamping screw and a collar or the thicker part of the bearing element, if necessary with a washer in between ¹ ,. This is therefore a purely force-fitting connection between the bearing element and the bearing part.

This previously known bearing does, as already mentioned, enable adaptation to different sash overlap heights from the value zero up to the maximum usual sash overlap thickness, but the adjustment of the sash pressure on the fixed frame is only possible with a & It &ngr; B^kui &Lgr;»*&iacgr; /» ft*w**4 iimb^om<41 &idigr;/»&Kgr; t/i-kvwiirveKmA« Ui &Dgr;&idiagr;*&Kgr;&eegr;&idiagr; miiA man 1*\a &mdash;

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make sure that in the case of skylights, the geometric bearing axis of the bearing element can be moved perpendicular to the fixed frame plane due to a special scissor construction. As mentioned, adjusting the sash pressure is more difficult than with an arc-shaped displacement of the geometric bearing axis. On the other hand, it must be taken into account that if the sash pressure is too high, the clamping connection between the bearing element and the bearing part is heavily loaded and may not be able to withstand this load. It can happen that an adjusted pressure

The pressure changes during the repeated use of the skylight and in extreme cases the clamping connection becomes so loose that it is no longer usable.

The object of the invention is therefore to further develop a bearing of the type described at the beginning, such that the ^pressure can be determined and safely locked, depending on the presence and size of a sash overlap. In addition, the extension arm should be able to be securely coupled to the bearing element in a particularly simple manner and also detached from it again. The latter is particularly important in connection with window cleaning.

To solve this problem, the invention proposes that the bearing is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim. Now that the clamping connection between the bearing element and the bearing part has been eliminated and replaced by a threaded connection, which neither adjusts nor loosens due to the self-locking and (.. can absorb large forces resulting from the pressure on the sash, on the one hand an optimal closing of the sash can be ensured and on the other hand a permanent maintenance of the contact pressure can be maintained. The threaded connection, like any other threaded connection, consists of a threaded bolt on one part and a nut thread on the other part. The sliding movement requires that one of the two parts of the bearing element and the bearing part is

winch connection is rotatable and immovable, while the other can carry out the displacement movement that causes the stroke.

In a particularly preferred embodiment of the invention, one element of the threaded connection is a screw with a head, outer collar or the like and the other element is a nut thread. It is also conceivable to use an outer collar in addition to the head in order to increase its diameter and thus also the contact surface.

A further embodiment of the invention is given in claim 3. While in the known prior art the bearing element engages with a pin in the slot-shaped transverse guide of the bearing part and is thereby mounted in the transverse guide so that it can rotate and be displaced transversely to its longitudinal axis, this bearing element can only be displaced in the transverse guide but cannot be rotated about the geometrical axis of the bearing element _; this is of course also prevented by the threaded connection. However, due to its special design, the transverse guide also prevents the bearing element from tipping relative to its geometric axis if a corresponding force acts on it.

A further development of the invention can be found in claim 4. For the rotatable but non-displaceable mounting of the screw on the bearing part, it is sufficient if it only engages in a receptacle at the end of the guide slot remote from the wing, whereby

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These are preferably small transverse slots. In this case, the "bearing" of the screw is therefore only carried out on the bearing element. The bearing part does not require a special bearing hole for the screw due to the good guidance of the bearing element. This makes assembly easier and also reduces the cost of producing the bearing part. The screw has a slot, Phillips slot, hexagon socket or similar on its head in the usual way, to which a "nts***xfichsiiciss Bst~.£iti*" ¹ tm^swerKzsu ⁿ can be attached ^.

Further embodiments of the bearing according to the invention and the resulting advantages are evident from the following description of an embodiment. The drawing shows such an embodiment. Here:

Fig. 1 a vertical section through the frame and sash of a so-called skylight with built-in bearing with a view parallel to the tilt axis, with a wooden frame,

' Fig. 2 a comparable representation for frames made of aluminium or plastic profiles,

Fig. 3 in an oblique view the bearing part as with the bearing element of Figs. 1 and 2,

Fig. 4 a comparable illustration with a slightly modified bearing part,

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Fig. 5 shows an exploded view of the extension arm and the part of the bearing to be attached to it in an oblique view,

Fig. 6 is a view comparable to Fig. 5, with the bearing element also shown before assembly.

A projection device 1, in particular a so-called opening scissors, connects the upper end of a sash 2 with the associated crossbar of a fixed frame 3. The spars of the frame can be made of wood as shown in Fig. 1 or of profile material as shown in Fig. 2, in the latter case both plastic and aluminum or the like being possible. A projection arm 4 (Fig. 5) is hinged at one end to the fixed frame 3, for example so that it can rotate and slide, while its other end is rotatably mounted on the sash, more precisely on its upper crossbar, by means of a bearing 5. The projection arm 4 is usually an element of a scissor arm, although in the case of a larger sash more than one such projection or opening scissors can certainly be used. A scissor bearing 7 on the fixed frame side and a guide rod 6 are also shown in Fig. 1. It creates the connection between the articulation points 8 and 9.

The end 14 of the opening scissors or the extension arm 4 that is near the sash frame is mounted on a bearing pin 10. This is in the

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The bearing pin 10 is held in an adjustable manner in the sense of the double arrow 11 on a bearing part 12 or 13. The bearing pin 10 forms, in a sense, an attachment of a bearing element 15, with which it is manufactured in one piece.

The bearing element 15 can be moved in a transverse guide 16 of the bearing part 12 or 13 in the direction of the double arrow. This transverse guide is a slot-like opening, the longitudinal edges 19 of which engage in guide grooves 17 or 18 of the bearing element 15 which are open on opposite sides.

The bearing element 15 and the bearing part 12 or 13 are coupled via a threaded connection 21, whereby in the case of the exemplary embodiment the bearing element 15 has the threaded hole or the nut thread 22. A threaded bolt 23 engages in this and is held so that it can rotate but cannot be moved relative to the bearing part 12 or 13. The threaded bolt 23 is the threaded part of a screw with a head 24. In order to be able to turn the screw, its head is equipped in the usual way with a hexagon socket 25, slot, Phillips head or the like, into which a suitable turning tool can be inserted. In order to obtain a somewhat larger diameter, the washer is connected in a rotationally fixed manner to a disk 26. This can also simply be screwed onto the threaded bolt 23 and clamped against the head in the manner of a lock nut. In any case, its edge projecting radially beyond the screw head engages in a recess 27, 28 of the bearing part 12 or 13.

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These mounts are short transverse slots at the end of the longitudinal edge 19 or 20 of the guide slot of the bearing part 12 or 13, which forms the transverse guide 16, which is remote from the wing. As can be seen from Fig. 1, for example, the geometric axis 21 is below the plane of the transverse guide 16, which is why the disk 26 engages with the upper part of its edge in the mount 27. In addition, the screw head is also located

[ below the plate-shaped part 30 or 31 of the bearing part 12 or 13, in this area two beads 32 and 32 a on both sides

the disc 26. The gap between these two &idigr; < )
In the example embodiment, beads form the receptacle 27 for the pane 26. Additionally or alternatively, the receptacle 27 can also be formed by two short slots 28 extending in opposite directions at the end of the transverse guide 16 remote from the wing.

According to Fig. 3, the plate-shaped part 30 of the bearing part 12 forms the horizontal leg of an angle whose vertical leg 33 is attached to the surface 34 or 44 of the upper sash cross member 35 facing into the room. It is equipped with fastening holes 36 and 37 for fastening screws 38. In addition, at least one thread 39 is provided for a fastening screw. The thread is important for frames made of profiles (Fig. 2), while fastening screws 38 are used in conjunction with wooden frames. The fastening holes 36 and 37 are arranged so deep that the screws can be screwed into the frame wood below a sash overlap 41.

&bull; t · · « t

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In contrast, the plate-shaped part 31 in Fig. 4 is the bent part of the bearing part 13. This essentially consists of a fastening plate with fastening holes 42 and the plate-shaped part 31. In contrast to the bearing part 12, it can be placed on the upward-facing surface of the cross member 36 and ^screwed there. A wing-side extension 43 of the guide slot for the bearing element 15 is selected to be so large in cross section that the latter can be inserted transversely to its direction of displacement 14 and "threaded" into the transverse guide formed by the longitudinal edges 19 and 20.

If the screw 24 and thus the threaded bolt 23 are turned in one direction, this leads, for example, to the bearing pin 10 coming closer to the fixed frame 3 because of the rotatable and non-displaceable mounting of the screw. A rotation in the opposite direction moves the bearing pin 10 away from the frame 3. If instead the threaded bolt is located on the bearing element 15, i.e. it is held there immovably and non-rotatably, a rotation of a nut or the like engaging in the receptacle 27, 28 has exactly the same effect due to its rotatable but non-displaceable mounting or bearing.

Figure 1 of the drawing shows that with a comparatively wide sash overlap 41, measured transversely to the frame plane, the bearing element 15 has a smaller distance from the sash surface 34 facing the interior of the room than is the case, for example, with an aluminum construction, where the bearing element 15 has a greater distance from the comparable sash surface 44.

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because the sash overlap 45 is considerably narrower there. If, instead, a so-called smooth-closing sash is used, in which the sash surface 44 is flush with the frame surface 46, the bearing element 15 must be moved further to the right in the direction of the arrow 47. It is also obvious that this adjustment device or threaded connection 21 can be used to precisely regulate and, if necessary, readjust the contact pressure of the sash 2 on the fixed frame 3 , the set position being securely maintained due to the self-locking threaded connection. It does not matter whether the bearing pin 10 moves perpendicular to the fixed frame plane or in an arc when the sash is tilted, i.e. when the skylight is opened.

As can be seen in particular from Fig. 6, the bearing journal 10 consists of a neck 48 with a thickened head 49 attached to it, which forms the free end. The latter is designed as a truncated cone or cone, at least at its free end, but in the embodiment as a whole. The transitions to the head on the one hand and to an essentially cuboid-shaped base body 50 on the other hand are made via concave grooves 51 and 52 respectively. In order to obtain a somewhat sharper step, the concave groove 51 is designed with a much smaller ¹ · radius.

The bearing pin 10 engages in a bearing piece 53 held at the sash frame end of the extension arm 4, which is equipped with a pin locking device 54. The bearing

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The piece 53 essentially consists of two parts 5? and 56, which can preferably be moved relative to one another in the longitudinal direction of the extension arm 4, between which a spring 57, in particular a compression spring, is connected. The spring 57 holds these parts 5? and 56 in the locking end position shown in the drawing. The inserted head 49 of the bearing pin is held in place in this position.

One bearing part is designed in particular as a substantially U-shaped housing 56, on whose U-shaped central web one end of the spring 57 is supported. The other bearing part is a guide body 55 that can be moved therein in the direction of the double arrow 58. It can be equipped with a receptacle for the associated end of the spring 57.

The extension arm 4 has, at least in the example, a U-shaped cross-section. The bearing piece 53, or more precisely its housing 56, is inserted between its two U-shaped legs 59 and 60. The height of the housing 56 corresponds essentially to the clearance between the U-shaped legs 59 and 60. In addition, two aligned holes 61 and 62 are provided on the latter, into which a bolt-shaped element, in particular a rivet 63, is inserted. It passes through a hole 64 in the guide body 55 and thus connects the latter to the extension arm 4 in an immovable manner. Turning is also not possible because the edges 65 and 66 of the housing rest on the inside of the U-shaped crosspiece 67 of the extension arm 4.

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The two U-legs 59 and 60 do not rest firmly against the housing 56, but rather the latter can be moved not only relative to the guide body 55, but also relative to the extension arm 4 in the direction of arrow 58. Its outwardly projecting end forms a release button 68. If the latter is pressed in in the direction of arrow 69 against the resistance of the spring 57, the extension arm 4 can be hemmed out in the direction of arrow 17, i.e. released from the bearing pin 10. The coupling of the extension arm to the bearing pin takes place automatically due to the construction explained in more detail below if the extension arm is placed on the bearing pin 10 in the opposite direction to arrow 70 and pressed down.

Aligned holes 73 and 74 are located on the two U-legs 59 and 60 of the extension arm 4. Holes 75 and 76 of the same size are located on the U-legs 71 and 72 of the housing 56 of the device 54. Finally, a hole 77 of this type is also located on the guide body 55. In the assembly position of the bearing pin 10, all of these holes 73 to 77 are congruent. The hole diameter corresponds approximately to the largest diameter 78 of the bearing pin 10.

The holes 75 and 76 of the housing U-legs 71 and 72 are widened like a keyhole in the direction of displacement 69. In the locking position, the upper extension 79 in the drawing can be assigned to the free end of the bearing pin 10 or its thickened head 49, while the lower extension is assigned to the neck 48.

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of the bearing pin 10. The thickened head 49 can also be located completely in the bore 77 of the guide body 55 if necessary. In any case, due to the laterally offset position of the bore compared to the bores 74 and 76, it is not possible to pull out the bearing pin 10 in the opposite direction to the arrow 70. The offset of the bores is selected such that the free end of the bearing pin 10 can enter despite the locking position of the guide body and can push the latter away sideways until it is locked.

From Fig. 5 it can be seen that recesses 80 are provided on the two U-legs 71 and of the housing 5fe, which allow the necessary displacement of the housing 56 relative to the rivet 63. Of course, there is a sufficient distance 81 between the parts 55 and the pin locking device 54, which allows the button 68 to be pressed in.

The housing 56 of the device 54 is expediently made of the same material as the extension arm 4, for example metal, in particular anodized aluminum. The same applies to an end part 82 inserted at the other end of the extension arm. In contrast, the guide body 55 is preferably made of a stable plastic.

It remains to be added that the screw 40 for fastening the bearing part 12 to the wing 2 can be tightened from the inside

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screwed in so that its head is not accessible when the sash is closed and also creates a visually attractive design. An advantage of the design described above is that the same design can now be used regardless of the overlap heights and a different type of stop can be selected by replacing just one part, namely the bearing part 12 or 13. This reduces stock levels and increases the series. The entire design is also characterized by a very advantageous appearance, which is important for fittings in general and for so-called skylights in particular. The correct position of the opener and the desired contact pressure can be set quickly and easily when the sash is closed by turning the screw 23, 24. In addition, the bearing part is equally suitable for installation on wooden and plastic or aluminum windows. By screwing in the fastening screw 40 from the inside, the previously usual insertion of a retaining strip with threads in the overlap of the sash is no longer necessary. Instead, the threads are now located on the vertical leg 33 of the bearing part 12.

The crank 83 ensures that the bearing element 15 assumes the same position relative to the scissors or the extension arm 4 as in the version with an angled bearing part 12. The design of the neck 48 of the bearing pin 10 with the grooves 51 and 52 enables the necessary inclination relative to the extension arm when the sash 2 is tilted.

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Furthermore, it can be seen from Fig. 6 that the distance between the guide body 55 and the link 6 and/or the scissor bearing λ on the fixed frame side is so small when the sash is closed that the button 68 cannot be operated and thus the extension arm 4 cannot be unhooked. In this way, manipulation in this area is reliably prevented. Furthermore, the position of the release button 68 from below shows whether the sash is correctly hung or the extension arm 4 is correctly coupled or not. If this coupling has not been carried out correctly, the sash cannot be closed completely and this automatically draws attention to this defect. This undoubtedly increases the security of this window. Furthermore, the scissor bearing 7 and the handlebar 6 as well as the pin locking device 54 are designed and assigned to one another in such a way that when the housing 56 is jammed, the release button 68 is pressed into the locked position by the scissor bearing or the handlebar.

Claims (12)

&bull; ■· 17 870 B/va claims 1. Bearing for the end (14) of a projection arm (4) on the wing frame side, in particular a scissor arm of a so-called over-light opener, with a bearing part (12, 13) that can be mounted on a wing (2), on which a bearing element (15) is mounted in a transverse guide (16) so that it can be displaced and locked transversely (11) to the frame plane, wherein a bearing pin (10) of the bearing element (15) can be coupled to the end (14) of the projection arm (4) on the wing frame side, characterized in that the bearing part (12, 13) and the bearing element (15) are coupled via a threaded connection (21), wherein one part of the threaded connection is rotatable but immovable relative to the bearing part (12, 13), while the other part is located on the bearing element (15), and that the Thread longitudinal axis (29) runs parallel to the displacement direction (11) of the bearing element (15). 2. Bearing according to claim 1, characterized in that one element of the threaded connection (21) is a screw (23) with a head (24), outer collar (26) or the like and the other element is a nut thread (22). 3. Bearing according to claim 2, characterized in that the bearing element (15) has two guide grooves (17, 18) open on opposite sides, into each of which a longitudinal edge (19, 20) of a guide slot of the τ-bearing part (12, 13) forming the transverse guide (16) engages, and that the guide grooves pam I Ie extend to the thread longitudinal axis (29), the latter running transversely, in particular perpendicularly, to the geometric axis of the bearing pin (10). 4. Bearing according to claim 3, characterized in that the head (24) of the screw (23) or a circular cylindrical disk (26) or the like connected thereto in a rotationally fixed manner engages in a receptacle (27) at the end of the guide slot (16) remote from the wing frame, the receptacle (27) being formed in particular by two bead-like formations (32, 32a) spaced apart from one another at a distance of approximately the thickness of the disk. 5 Ls^cr sicich wö«i«etsris sine&trade; the preceding characterized in that the bearing part (12, 13) is designed as an angle or as a bent plate and at least in the case of a bent plate, there is a slot extension (43) corresponding to the cross section of the bearing element (15) at the end (14) of the guide slot (16) on the sash frame side. 6. Bearing according to at least one of the preceding claims, characterized in that the bearing element (15) has a bearing pin (10) which consists of a neck (48) with a thickened head (49) which is designed as a cone or truncated cone at least at its free end, the transitions to the head on the one hand and a substantially cuboid-shaped base body (50) on the other hand each being made via concave grooves (51, 52). 7. Bearing according to claim 6, characterized in that the bearing pin (10) engages in a laying piece (53) held at the sash frame-side end of the extension arm (4), which is equipped with a pin locking device (54). 8. Bearing according to claim 7, characterized in that the bearing piece (53) consists of two parts (55, 56) which can be displaced relative to one another, preferably in the longitudinal direction of the extension arm (4), which are held in a locking end position by means of at least one intermediate spring (57), in which the inserted head (49) of the bearing element (10) can be rotated but not (9. Bearing according to claim 8, characterized in that one bearing piece part is designed as a particularly substantially U-shaped housing (56) and the other bearing piece part is designed as a guide body (55) slidably mounted therein and firmly connected to the extension arm (4), the spring (57) preferably being connected between the latter and the U-shaped middle part of the housing (56). 10. Bearing according to claim 9, characterized in that the log piece part designed as a housing (56) is located between two walls, in particular two U-legs (59, 60) of the extension arm (4) and the walls (59, 60), the housing U-legs (71, 72) and the guide body (55) are provided with holes (73 to 77) which are congruent in the assembly position and are approximately the same size, the diameter of which corresponds approximately to the largest diameter (78) of the bearing pin (10), the holes (75, 76) of the housing U-legs (71, 72) being widened like a keyhole in the direction of displacement (69) and the free end of the bearing pin (10) on the one hand and the neck (48) of the latter on the other hand being assigned to these extensions (79) in the locking position. 11. Bearing according to at least one of claims 8 to 10, characterized in that the guide body (55) is fixed to the extension arm (4) by means of a bolt, in particular a rivet (63), and the one bearing piece part (56) has a recess (80) or corresponding longitudinal guides in this area. 12. Bearing according to at least one of claims 8 to 12, characterized in that when the sash (2) is closed , the guide body (55) of the bearing piece (53) has a gap-like distance from a scissor bearing (7) on the fixed frame side and/or a scissor hinge (6) hinged thereto.