EP3216971B1 - Building shade device and bearing arrangement for the associated winding shaft - Google Patents

Description

The invention relates to a building opening shading device such as a roller shutter, and a bearing assembly for supporting a motor-side end of a winding shaft of the building opening shading device on a side wall of a winding shaft box according to the preamble of claim 1.

Building opening shading devices such as e.g. Shutters often have a motor-driven winding shaft. The engine is designed as a tubular motor and must be supported against rotation with its protruding from the winding shaft end. Conventionally, the motor has been screwed or otherwise attached to the associated side part of the roller shutter box via a corresponding, attached to the motor front end adapter plate and the like.

In a motor failure, however, there are problems. Because to remove the winding shaft with wound curtain, the winding shaft must be rotated slightly to drain the curtain a piece and so to allow the expansion in the first place. This is prevented by a blocking motor, however, so that the attachment of the motor-side winding shaft end must be solved on the associated side part, which is often difficult because the attachment is inaccessible and what further causes the winding shaft held with its entire weight by the fitter must become.

Therefore, newer solutions provide engine mounts in which the winding shaft with its engine-side end on the one hand in a corresponding Shaft support is supported, so that the shaft receiving the weight of the winding shaft. On the other hand, these solutions on rotary locking devices that fix the motor side winding shaft end rotatably in the shaft recording, but can be solved again for revision purposes, so that the winding shaft can twist as far as lock motor even after locking the loosening of the twist lock that a removal unproblematic is possible.

For example, shows the international patent application WO 2009/030474 A1 the attachment of the motor-side winding shaft end by means of a motor-side mounting plate, which has radial projections, wherein the box end wall has a Aufnahmeausformung, which is formed by an annular adapter into which fits the round mounting plate. At the annular adapter while the rear grip tabs are provided, which are penetrated by the radial projections on the mounting plate during insertion of the winding shaft or penetrated and are engaged behind by the radial projections of the mounting plate after a piecewise rotation of the winding shaft. On a lower side either swivel or clip leg of the annular adapter while radially inwardly projecting counter-projections are provided in the closure state, which engage the radially outwardly projecting projections of the mounting plate and thus set the motor side winding shaft end rotation.

While allow the radially inwardly projecting projections on the annular adapter rotation of the winding shaft only in a narrow angular segment, the German patent application DE 10 2011 000 228 A1 already a similar, bayonet-type mounting of the motor-side winding shaft end on the box side part, wherein the rotary locking mechanism consists of a locking piece, which is inserted from below into a radially to the shaft axis on the shaft receiving and the motor-side adapter plate provided bolt receptacle. For inspection purposes, this rotary locking piece can be removed, so that the Winding shaft is freely rotatable even with blocking motor in the shaft mount at the motor end.

The area in the winding shaft box, in which must be handled to release the rotation lock, however, is difficult to access despite this improvement and the release of the locking piece difficult, especially at the same time the winding shaft must be prevented from uncontrolled rotation and the securing piece is not attached to the engine mount, but can fall off after subtracting. In addition, the anti-twist device for the motor-side end of the winding shaft is an extremely safety-critical element of the roller shutter or the building opening shading device as a whole.

Other solutions therefore see on the radially retractable Sicherungsriegeln over which the winding shaft at its motor-side end can be fixed against rotation, securing springs, which secure the bolt against unwanted extraction from the radially inserted rotational securing position.

Thus shows the German patent application DE 195 22 622 A1 an engine mount for the motor-side end of a winding shaft in which a radially insertable, designed in the manner of a Sicherungssplints latch serves to rotatably set a protruding from the end of the winding shaft bearing support in a holding plate, wherein the locking latch by corresponding, radially extending openings in the Spigot and engages the component holder on the side part and is biased due to the spring attached to it in its locked position.

The European patent application EP 1 568 844 A1 shows an attachable to a winding shaft end, round bearing shell, which can be inserted into a corresponding recess on a box side part and fixed there against axial withdrawal and against rotation. For this purpose, the round bearing shell on the circumference radially outwardly projecting rear grip tabs, of a below the shaft mount on Side part radially to the shaft movable locking piece with a retaining edge are engaged behind, provided that the locking piece is in its locking position. Furthermore, the locking piece on an arcuate portion which faces the bearing shell and projecting at the radial direction to the shaft axis the rear grip tabs on the bearing shell facing retaining projections which engage in the locking position of the locking piece between the rear grip tabs of the bearing shell and thus the bearing shell and attached thereto Rotate winding shaft. On the locking piece, two spring legs are formed in a Y-shape, which come into abutment against corresponding wall sections on the shaft receptacle when the locking piece is pulled out of its locking position, and thereby bias the locking piece into its locking position.

A functionally similar bearing arrangement is shown in the European patent specification EP 2 677 106 B1 , unlike the EP 1 568 844 A1 However, the locking piece is not housed on the box side part, but in a recess in a motor-side bearing stub. The two Y-shaped spring legs bias the locking piece before in a locking position by it engages with a locking cam in a recess on the shaft receiving.

Object of the present invention is therefore to provide a bearing assembly for the motor-side end of a winding shaft or a Gebäudeöffnungsverschattungsvorrichtung with such a mounted winding shaft, in which the radially displaceable anti-rotation lock is held in its securing position with a locking mechanism, which is reliable and structurally simple and in case of maintenance, a simple release of the anti-rotation bolt is allowed.

This object is achieved with regard to the bearing arrangement having the features of claim 1, with regard to the building opening shading device having the features of claim 14.

In a conventional manner, the bearing assembly according to the invention has an insertable into a box-side shaft mount, motor side attachable adapter disc, which is recorded there secured bayonet locking against axial withdrawal and rotationally fixed via a rotation locking device can be placed, wherein the rotation locking device has a radially displaceable locking latch in his Anti-rotation position, the shaft holder and the inserted therein adapter disc rotatably fixed together and in its rotational release position rotation of the adapter plate - and thus the winding shaft, even with blocking motor - allows, and wherein a securing spring is provided which secures the fuse latch in its anti-rotation position. The bearing arrangement according to the invention is characterized in that the securing spring is attached to the shaft receptacle and the securing latch hangs on the shaft receptacle via the securing spring. This makes it easy to pre-assemble the anti-rotation device on the shaft mount already ex factory, so that the existing of the locking latch and the locking spring rotation device can already be mounted captive during transport already on the shaft mount and on site a simple final assembly is possible.

This not only succeeds in a structurally simple construction of the safety bolt and the bearing assembly as a whole, because the safety latch must not have any molded safety spring and therefore can be designed in geometrically extremely simple form, whereas the safety spring already attach to the shaft mount or mount or fasten leaves, but also a simple installation of the winding shaft on the motor-side box part with reliable rotation while operating the building opening shading device and easy release the rotation lock in case of maintenance. Because for mounting the retaining spring can first be pre-assembled on the shaft mount, then the winding shaft inserted with its motor-side end and the attached adapter plate in the shaft mount and by twisting with the rear grip tabs be secured to the retaining tabs against axial withdrawal, whereupon the locking latch can be brought into approach and connected to the locking spring.

It would be conceivable to form the securing spring and the securing bolt in one piece.

An advantageous development of the higher-level measures is characterized by the fact that a suitable material can also be selected for each of the two components by the two-part design of safety spring and safety latch. Thus, the locking spring is advantageously designed as a wire spring made of metal wire. The safety catch, on the other hand, can be made of plastic.

Further advantageously, the adapter disc has a number of radially extending latch receptacles and the shaft receptacle on its cylindrical peripheral portion a further number of radially opening latch openings, wherein the locking latch in its rotational securing position in one of the number of latch receptacles on the adapter disc and in one of the further number radially opening Lock openings engages to fix the adapter disc on the shaft receiving rotation. In this case, it is further advantageous if the engagement with exclusive degree of freedom takes place in the direction of radial displacement of the bolt, that is, if the bolt is more or less designed as a dowel pin which fits into each bolt receptacle and each bolt opening. In terms of a simple insertion or extraction of the bolt in its anti-rotation position or in its rotational release position, however, it is desirable if the fit has a certain, in terms of non-rotatable locking but not too big game.

It is particularly preferred in this case if the cylindrical peripheral portion of the shaft receptacle is formed on a circumferential wall projecting from the end-side box side wall like a pipe stub. At the Circumferential wall can then be designed as a further number of radial openings formed, more number of bolt openings. The securing bolt can then pass through at least one of the further number of radial openings in its anti-rotation position, so that the securing spring can be attached to its section located radially outside the circumferential wall.

In order to protect the bolt against being pulled out in the axial direction of the winding shaft, one of the further number of radial openings assigned to each radial breakthrough each radially outwardly arranged further number can be provided in the radial direction extending guideways, in which the locking latch in its anti-rotation position and in its rotational release position preferably is recorded guided in its radial displacement direction with exclusive degree of freedom.

In order to attach the securing spring to the shaft receiving means, the securing spring can advantageously have a ring spring section which is pulled over the peripheral wall projecting from the side wall. As a result, the securing spring is mounted or fastened on the one hand in the shaft mount. On the other hand, the annular spring portion can deform elastically in train on the securing bolt connected to the locking bolt and bias the bolt towards its anti-rotation position, ie radially inward.

In order to secure the annular spring portion on the peripheral wall against slipping in the axial direction to the box inside, the peripheral wall may advantageously have a plurality of circumferentially outwardly radially projecting spring retaining tabs, and an outer circumferentially radially outwardly projecting, circumferential Federhaltekragen.

The safety spring may further comprise a subsequent to the annular spring portion on the side of the locking bolt Einhängbügelabschnitt with which the securing spring is attached to the locking latch. This can be the Securing latch have a transversely extending to its Radialverschieberichtung, undercut hook groove or a corresponding hook on which the securing spring is hung with her Einhängbügelabschnitt.

Since the area in the box inside, in which the locking latch is difficult to access in case of revision, even if the locking bolt is advantageously received with the shaft receiving obliquely downwardly directed Radialverschieberichtung on the shaft receiving, is particularly preferably a down-hanging on the locking latch Actuator expediently attached as a rope, string, wire, etc., which then hangs out in a better accessible in case of revision area of the roller shutter box or even through the open inspection flap from the shutter box. For this purpose, the securing bolt may have at its lower end an eyelet provided for attaching the actuating element.

A further advantageous embodiment relates to a bearing plate on which the shaft receptacle is mounted and which can be fastened to a side part of the winding shaft box. The bearing plate then forms, together with the box side part, the end-side side wall, on which the motor-side winding shaft end is to be stored, and thus a part of the bearing arrangement in the sense of the present application. Advantageously, a plate receptacle is provided on the side part, in which the bearing plate of the mounted in the state of the winding shaft facing side in the direction of the shaft axis, ie frontally inserted, the bearing plate with its insertable into the disk holder, plate-shaped flat body carries the wave recording, as well as preferably the pipe stub-like integrally formed on the flat body peripheral wall. Box side panels with such a normalized panel mount can then be used to provide high uniformity for various building opening shading devices. In terms of even higher common parts, it is advantageous if the bearing assembly allows insertion and a rotational and stationary fixing of the bearing plate in the disc holder in exactly two positions, a standard position and a contrast rotated by 180 ° about the shaft axis variant position, wherein the shaft mount is arranged at such an eccentric position on the flat body of the bearing plate that they set in variant position in the disk holder bearing plate determined an offset to the position of the shaft recording in the standard position in the disk holder Has bearing plate. Because then the bearing assembly can be used with different box side parts, ie in different shutter boxes, which require a different positioning of the winding shaft.

In particular with regard to the rotatable by 180 ° bearing plate, it is advantageous if not only one, but a plurality of locking holes are provided on the shaft receiving, so preferably on the tubular stubby protruding from the flat body of the bearing plate peripheral wall, for the 180 ° rotation at least two radially opposing bolt openings, so that the securing bolt can be attached to the bearing plate with downward or obliquely downward Radialverschieberichtung.

The invention or advantageously further developed Gebäudeöffnungsverschattungsvorrichtung, in particular a roller shutter, has a bearing assembly with the features of the invention or the features of an advantageous development described above, to support the motor-side end of its winding shaft on a box side member rotatably.

For assembly and in particular also for disassembly in the case of revision, it is advantageous if the winding shaft has at its other end facing away from the engine an axially displaceable bearing pin, and thus can be pulled out of the shaft receiving.

Figur 1

eine perspektivische Ansicht einer Lageranordnung gemäß einer Ausführungsform der Erfindung vor dem Zusammenbau;

Fig. 2 u. 3

einen Ausschnitt aus der in der Fig. 1 dargestellten Lageranordnung nach dem Einsetzen einer eine Wellenaufnahme tragenden Lagerplatte in eine dafür vorgesehene Plattenaufnahme am Kastenseitenteil;

Figur 4

das Einführen eines mit einer Adapterschale versehenen, motorseitigen Endes einer Wickelwelle in die Wellenaufnahme an der Lagerplatte;

Fig. 5 u. 7

Seitenansicht der Lagerplatte mit darin gegen axiales Herausziehen gesichert aufgenommener Adapterscheibe und einem zwischen einer Drehfreigabestellung (Fig. 5) und einer Drehsicherungsstellung (Fig. 7) verschiebbaren Sicherungsriegel;

Fig. 6 u. 8

Schnitte entlang der Linie A-A in Fig. 5 bzw. Fig. 7 bei in seiner Drehfreigabestellung (Fig. 6) befindlichen Sicherungsriegel und in seiner Drehsicherungsstellung (Fig. 8) befindlichen Sicherungsriegel;

Figur 9

eine den Figuren 7 und 8 entsprechende Seitenansicht der Lageranordnung bei in Drehsicherungsstellung befindlichem Sicherungsriegel und einer mit ihrem Ringfederabschnitt über die Umfangswand an der Wellenaufnahme gezogenen und mit ihrem Einhängbügelabschnitt an dem Sicherungsriegel eingehängten Sicherungsfeder; und

Figur 10

eine der Fig. 9 entsprechende Gesamtansicht der Kastenstirnseite mit einer an dem Sicherungsriegel befestigten Betätigungsschnur.

In the following, an advantageous embodiment of the invention will be explained in more detail with reference to the accompanying drawings. Show it:

FIG. 1

a perspective view of a bearing assembly according to an embodiment of the invention prior to assembly;

Fig. 2 u. 3

a section of the in the Fig. 1 shown bearing assembly after insertion of a shaft bearing bearing bearing plate in a designated plate receptacle on the box side part;

FIG. 4

the insertion of a provided with an adapter shell, the motor-side end of a winding shaft in the shaft receiving on the bearing plate;

Fig. 5 u. 7

Side view of the bearing plate with it secured against axial withdrawal recorded adapter disc and between a rotational release position ( Fig. 5 ) and an anti-rotation position ( Fig. 7 ) sliding safety latch;

Fig. 6 u. 8th

Cuts along the line AA in Fig. 5 respectively. Fig. 7 at in its rotary release position ( Fig. 6 ) and in its anti-rotation position ( Fig. 8 ) located safety latch;

FIG. 9

a the FIGS. 7 and 8 corresponding side view of the bearing assembly with befindlichem in the anti-rotation position securing bolt and a drawn with its annular spring portion on the peripheral wall of the shaft receiving and hinged with its Einhängbügelabschnitt on the locking latch spring; and

FIG. 10

one of the Fig. 9 corresponding overall view of the box end face with an attached to the locking latch operating cord.

First, reference is made to the Fig. 1 showing a bearing assembly having a box side member 1 with a plate holder 4, and a bearing plate 2 which is insertable into the plate holder 4. In this case, the bearing plate 2 has a plate-shaped flat body with a shaft receptacle 5 designed to receive a motor-side winding shaft end. The shaft receptacle 5 has a cylindrical projecting from the flat body wall, are provided on the radially inwardly projecting retaining tabs. In addition, the bearing assembly has a round adapter disc 3, which is attachable to the front end of the tubular motor of the winding shaft and radially projecting rear grip tabs, which can be brought into the shaft holder 5 by turning in the rear grip on the holding tabs provided there. Furthermore, a locking device 7 is provided to lock the motor end on its adapter disc 3 in the shaft receiving 5 against rotation.

The flat body of the bearing plate 2 in this case has two horizontally extending, mutually opposite side edges or sliding sides 2a, which are associated with the plate receiving 4 corresponding side guides or guideways 4a. The side guides 4a have on the side facing away from the winding shaft box outside edge portions on which the bearing plate 2 can be axially supported, and at right angles to horizontally extending wall sections on which the bearing plate 2 is supported horizontally displaceable.

The bearing plate 2 is inserted into the bearing receptacle 4 on the side part 1 and then moved horizontally into its end position. Several provided on the side edges of the bearing plate 2 rear grip tabs get into the rear grip on corresponding, provided on the horizontal side edges of the disc holder 4 retaining tabs, whereby the bearing plate 2 is fixed in Wellenachsrichtung. In order to secure the bearing plate 2 against a backward displacement in the horizontal direction transverse to the shaft axis direction, is doing a in Fig. 2 shown latching piece 6 is provided, which is locked in the space between the located in the end position bearing plate 2 and the vertical edge portion of the disc holder 4 on the side facing away from the end position. This creates a nearly completely circumferential positive connection between the bearing plate 2 on the one hand and the side part 1 and the locking piece 6 on the other hand, effectively prevents a horizontal transverse displacement of the bearing plate 2, but also an independent release, for example, by vibrations during transport.

In the Fig. 1 is a generally designated 7 rotation locking device shown, which has a locking latch 7a, a mounted on the locking latch spring 7b and also attached to the locking latch operating cord 7c as an actuator.

At one of the flat body of the bearing plate 2 to the winding shaft projecting circumferential wall of the shaft receiving 5 are provided radially inwardly projecting retaining tabs 5a. By contrast, the adapter disk 3 has circumferentially radially outwardly projecting rear grip tabs 3a.

After setting the bearing plate 2 in the plate holder 4 of the box side part - FIGS. 2 and 3 - What can already be done in the factory, carried out at the construction site, the assembly of the winding shaft between the equipped with the shaft receiving 5 box side part 1 and the box side part on the opposite side of the winding shaft. Again Fig. 4 can be seen, the motor-side winding shaft end 8 is provided with the adapter disk 3 to do so. Then the winding shaft is attached with its end facing away from the motor to the local box side part of obliquely from below, pressed on the provided there, axially displaceable bearing pin and then hinged upwards, causing them in the Fig. 4 shown position and inserted with the adapter plate 3 in the shaft receiving 5 in the arrow direction. In the process, the rear grip tabs 3a on the adapter disk 3 penetrate the retaining tabs 5a on the peripheral wall of the shaft receiving 5 and come after twisting the winding shaft with the attached adapter disc 3 bayonet-like in the rear grip on the retaining tabs 5a.

The FIGS. 5 and 6 On the one hand and 7 and 8 on the other hand show the adapter plate 3 in this secured in the shaft mount 5 against axial withdrawal behind the retaining tabs 5a position, wherein a locking latch 7a is provided, which rotatably sets the adapter plate 3 in the shaft seat 5, if he from his in the FIGS. 5 and 6 shown rotational release position radially inwardly in his in the FIGS. 7 and 8 shown anti-rotation position is displaced by one of the provided on the peripheral wall of the shaft receptacle 5 bolt opening or an opening 5b in a provided on the adapter plate, radially inwardly extending latch receptacle 3b. In order to secure the bolt against unwanted extraction in the axial direction and to guide during the movement between its anti-rotation position and its rotational release position, 5 subsequent guide tracks 14 are provided radially outwardly of the apertures 5b through the peripheral wall of the shaft receiving, in the example shown by two den Latch engaging behind, formed by the plate-shaped flat body of the bearing plate 2 hook groove walls are formed. The safety catch 7a has at its radially inner tip a the plate-shaped flat body of the bearing plate 2 facing stop projection 13 which runs when pulling the locking bolt 7a from its anti-rotation position in its rotational release position against an associated counter-stop 12 on the bearing plate 2.

However, the bar is mainly by means of in the Figures 5-8 not marked, but the Fig. 1 and 9 to be taken backup spring 7b held on the shaft receiving and biased from its rotational release position for anti-rotation position out. The securing spring 7b has a ring spring portion, with which it is drawn on the outside circumferentially on the peripheral wall of the shaft receiving, and a Einhängbügelabschnitt 17, with which it is mounted on the locking latch 7a. The securing bracket 7a has for this purpose an undercut hook groove 18 on which the Einhängbügelabschnitt 17 is hooked. In order to hold the annular spring portion in position on the peripheral wall, on the peripheral wall radially outwardly projecting spring retaining tabs 5c are provided, behind which the annular spring portion is received.

Again FIG. 10 can be seen, the radial direction of the locking bolt 7a extends in the installed state in the winding shaft box obliquely down to make a fitter access as easy as possible. Since the area in which the fuse is in the box interior, in case of revision is still difficult to access, is on the locking latch 7a an actuator, here an operating cable 15, attached, for which the locking latch 7a in FIG. 9 to be removed eyelet 16 has. The control cable 15 etc. thus depends on the locking latch 7a down and can be placed during installation of the winding shaft box, for example on a revision flap, so that it hangs out of the case in the case of revision after opening the flap or is at least in an accessible area in the box interior , For actuation by an operator, the actuating cable 15 has an actuating loop 19 at its end facing away from the safety catch 7a.

In case of revision, the bolt is pulled out by means of the actuating cable 15, etc. So from its anti-rotation position in its rotational release position, so that it is no longer in engagement with the bearing shell. Now, if the shaft is rotated a small piece, the locking latch 7a can be released again. This is now on the circumference of the adapter shell 3 and slides along selbigem. The shaft can now be rotated freely until the locking latch 7a due to the spring force of the locking spring 7b automatically jumps back into one of the bolt receptacles 3b on the adapter shell 3, in the example shown with two bolt receptacles 3b on the adapter shell so after a 180 ° rotation of the winding shaft. An automatic reset in the Anti-rotation position is thus ensured and accidental rotation of the shaft is prevented. On the other hand, if the safety catch 7a is held in its rotational release position, a plurality of shaft revolutions can be carried out, for instance in order to completely discharge the curtain of the building opening shading device and then disassemble the winding shaft.

Modifications and modifications of the illustrated embodiment are possible without departing from the scope of the invention.

Claims (15)

1. Bearing arrangement for supporting a winding shaft of a shading device for the opening of a building with its motor-side shaft end (8) on a side wall (1, 2) of a winding shaft box, with:

   a shaft receptacle (5) provided on the side wall (1, 2), wherein the shaft receptacle (5) has a cylindrical peripheral portion delimiting a recess being circular in cross-section, wherein the cylindrical peripheral portion protrudes from the side wall (1, 2) towards the winding shaft, wherein retaining tabs (5a) projecting radially inwards at the peripheral portion,

   an adapter disc (3) being insertable into the circular recess, provided for fastening at the end face to the shaft end (8), wherein the adapter disc (3) has behind engaging tabs (3a) projecting radially outwards at its periphery, which, when the adapter disc (3) is inserted into the shaft receptacle (5), engage through the retaining tabs (5a) and, after the adapter disc (3) has been rotated in the shaft receptacle (5), engage behind the retaining tabs (5a),

   a locking bolt (7a) which is radially displaceable between a rotation lock position in which it fixes the shaft receptacle (5) and the adapter disc (3) inserted therein together in a rotationally fixed manner and a rotation release position in which it permits rotation of the adapter disc (3) in the shaft receptacle (5), and

   a locking spring (7b) which holds the locking bolt (7a) in its rotation lock position,

   characterized in that

   the locking spring (7b) is mounted on the shaft receptacle (5) and the locking bolt (7a) is held by the locking spring (7b) on the shaft receptacle (5), wherein the locking bolt (7a) in particular is hanging on the shaft receptacle (5).
2. Bearing arrangement according to claim 1, characterized in that the locking spring (7b) and the locking bolt (7a) are two separate components connectable to one another, preferably also connectable only after the adapter disk (3) has been inserted into the shaft receptacle (5).
3. Bearing arrangement according to claim 1 or 2, characterized in that the adapter disk (3) has a number of radially extending bolt receptacles (3b) and the shaft receptacle (5) has a further number of radially opening bolt openings (5b) on its cylindrical peripheral portion, wherein the locking bolt (7a) engages in its rotation lock position in one of the number of bolt receptacles (3b) on the adapter disk (3) and in one of the further number of radially opening bolt openings (5b) with an exclusive degree of freedom in its radial displacement direction.
4. Bearing arrangement according to claim 3, characterized in that the cylindrical peripheral portion of the shaft receptacle is formed on a peripheral wall projecting in the form of a tube stump from the side wall (1, 2), which peripheral wall has the further number of bolt openings (5b) formed as a further number of radial apertures (5b), wherein the locking bolt (7a) penetrating at least in its rotation lock position one of the further number of radial apertures (5b), and wherein a guide track (14) extending in the radial direction is arranged, preferably on the further number of radial apertures (5b), in each case radially on the outer side, in which the locking bolt (7a) is received guided, in its rotation lock position and in its rotation lock position, with an exclusive degree of freedom in its radial displacement direction.
5. Bearing arrangement according to one of the preceding claims, characterized in that the cylindrical peripheral portion of the shaft receptacle is formed on a peripheral wall projecting in the form of a tube stump from the side wall (1, 2) and the locking spring (7b) has an annular spring portion drawn over the peripheral wall on the outer peripheral side.
6. Bearing arrangement according to claim 5, characterized in that the peripheral wall has an externally circumferential projecting spring retaining collar or a plurality of externally circumferential radially outwardly projecting spring retaining tabs (5c) which secure the annular spring portion against slipping off in the axial direction towards the box interior.
7. Bearing arrangement according to one of the preceding claims 2 to 6, characterized in that the locking spring (7b) has a hooking bow section (17) and the locking bolt (7a) has an undercut hook groove (18) extending transversely to its radial displacement direction, on which the locking spring (7b) is hooked with its hooking bow section (17).
8. Bearing arrangement according to one of the preceding claims, characterized in that the locking spring (7b) consists of metal wire.
9. Bearing arrangement according to one of the preceding claims, characterized in that the locking spring (7b) presses against the shaft receptacle (5), in particular against the peripheral wall thereof, when the locking bolt (7a) is pulled out of its rotation lock position, thereby elastically deforming and biasing the locking bolt (7a) radially inwards.
10. Bearing arrangement according to one of the preceding claims, characterized in that the radial displacement direction in which the locking bolt (7a) can be displaced is directed downwards, preferably downwards at an angle, from the shaft receptacle (5), and preferably the locking bolt (7a) is secured against complete extraction from its guide, wherein the locking bolt (7a) is provided in particular with a stop (13) which, when the safety catch (7a) is pulled out of its rotation lock position into its rotation release position, butts against an associated counter-stop (12) on the bearing plate (2).
11. Bearing arrangement according to one of the preceding claims, characterized in that an actuating element hooked downwards, preferably formed by a rope (15), is fastened to the locking bolt (7a), in particular to an eyelet (16) provided at the lower end of the locking bolt (7a).
12. Bearing arrangement according to one of the preceding claims, characterized in that the bearing arrangement comprises a box side part (1) which has a plate receptacle (4) into which a bearing plate (2) can be inserted in the direction of the shaft axis from the side facing the winding shaft in the installed state, wherein the bearing plate (2) carries the shaft receptacle (5) with a plate-shaped flat body which can be inserted into the plate receptacle (4), the bearing arrangement allowing the bearing plate (2) to be inserted and fixed in rotation and position in the plate receptacle (4) in exactly two positions, a standard position and a variant position rotated by 180° about the shaft axis, wherein the shaft receptacle (5) is arranged at such an eccentric position on the flat body of the bearing plate (2) that, when the bearing plate (2) is fixed in the plate support (4) in the variant position, it has an offset to the position of the shaft receptacle (5) when the bearing plate (2) is fixed in the plate receptacle (4) in the standard position.
13. Bearing arrangement according to one of the preceding claims, characterized in that the further number of radially opening bolt openings (5b) comprises at least two bolt openings (5b) provided on radially opposite sides of the shaft receptacle (5).
14. Shading device for the opening of a building, in particular a roller shutter, with a winding shaft box rotatably supporting a motor-driven winding shaft, characterized in that a bearing arrangement according to one of the preceding requirements is provided at the motor-side winding shaft end.
15. Shading device for the opening of a building according to claim 14, characterized in that the winding shaft has at its end remote from the motor a bearing pin which is slidably received in the axial direction.

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