EP2682932A1 - Folding stand for the presentation of a display surface - Google Patents

Abstract

The stand has a front frame (2) carrying a display surface (1). Upper sides of a rear frame (3) are connected with each other by a hinge, which includes a left hinge part (4') and a right hinge part (4''). The front and rear frames are pivoted relative to each other from a storage position into a stand position by unfolding, The front and rear frames are successively taperingly arranged from downwards to upwards in an angle. A detachable pawl (5) blocks and fixes the hinge in the stand position. The pawl is moved to and fro from a releasing position into a locking position.

Description

Technical area

The invention relates to a folding display for the presentation of at least one display surface, with one, the display surface bearing front frame and a rear frame whose tops are connected to each other via at least one joint and from a storage position by opening in at least one set-up position in which the front Frame and the rear frame are arranged tapering from bottom to top at an angle to each other, with a releasable pivot lock for fixing the joint is provided at least in a set-up position. The display surface may be a conventional picture frame for posters or posters or an electronic display in the form of a flat display.

State of the art

Folding stands of this type are also known by the term customer stopper and are usually used for advertising purposes. In this example, posters - usually in the format DIN A1 or DIN A0 - attached, for example, using a snap-frame profile. An optional protective foil on the poster protects the poster from the weather.

The folding stands have either a front display surface and a rear frame without display surface or front and rear each have a display surface. Usually, the front and rear frame of flat profiles, with longitudinal profiles and connecting them transverse profiles to form a rectangular frame on which then, for example, the snap frame is placed. Ultimately, however, the configuration of the display device for the implementation of the present invention is not essential.

The two display surfaces are arranged at an angle to each other during use of the folding stand, that is, the frame extend from bottom to top toward each other and open into the connection with a joint connecting the tops of the frame.

Such folding displays are generally known from the prior art, these folding displays usually have on the frame one or two picture frames in which the poster is inserted. The picture frame is attached to the flat profiles of the frame. So that the known folding display can not be opened beyond the desired opening angle and can not be accidentally collapsed, for example by wind pressure, he has a transverse reinforcement on the one hand, the opening angle of the two frames to each other by too wide slipping apart of the feet of the stand limited and on the other hand prevents a collapse about a lock when erecting folding display, as long as this lock is not released.

This lock is usually formed by a gear-like collapsible rod which extends from a lower frame portion of the front frame to a lower frame portion of the rear frame and folds during deployment of the folding stand to a straight bar, which has a dead center in the direction of re-folding that forms the catch. Only after manually lifting the articulated connection of this gear-like rod then the folding display can be folded again.

The locking of the known folding display has the disadvantage that there is a risk that the user injured on the connecting rod, for example by pinching the fingers. Another disadvantage is that these two frame interconnecting lower rod often visually disturbing acts. Finally, this rod can become dirty and bent, so that it is impaired in function. In addition, the lock is not sufficiently safe because the backup is not sufficiently defined on the dead center and the user often the folding display does not open wide enough to activate this lock or consciously push the rod again in a straight, locking position.

Brief description of the invention

The object of the invention is therefore to provide a folding display, which has a visually appealing and secure locking with good ease of use without lower connection of the frame.

The object is achieved by a folding display, which is characterized in that the pivot lock is formed by a pawl blocking the pawl, which is movable back and forth from a release position into a locking position.

According to the invention, a folding display is now provided, the locking of which is integrated in the upper joint for connecting the two obliquely arranged side surfaces, which serve to present the respectively selected display device. This joint may be a single joint, alternatively, several joints, for example, a joint on each side of the folding stand, may be provided.

The pawl now acts directly on the joint. If a plurality of joints are provided, a plurality of pawls, for example, for each joint at least one, or even a pawl can be provided, which is sufficient in itself, if the articulated connection can be blocked as such on the locking device, without thereby necessarily all joints would need to be set.

According to the invention can now account for a cross bracing below the joints, as on the locking device, the joint is fixed. The joint thus acts both as a pivot angle stop and as a lock in the closing direction and is designed such that it can pivot only by a defined angular range. For example, the joint can only be pivoted from the rest position, in which the frames are arranged almost parallel to one another, into an installation position, in which the frames are arranged at an angle of approximately 15 ° to approximately 45 °, preferably approximately 35 ° to one another. This prevents too wide unfolding of the folding stander to avoid instability.

The pawl is movably mounted on one of the parts of the joint. According to the invention, this is preferably done via a pivotable about a central bearing on the hinge part or rotatable lever, at the end of the pawl is arranged. This one part of the joint is connected to the front or the rear frame. The corresponding other part of the joint is then connected to the rear or the front frame and has the Sperrausnehmung, in which the pawl is able to engage each other with a suitable angular position of the frame.

Before reaching the locking recess, the pawl preferably slides on a runway or edge on the part of the joint carrying the locking recess, wherein it is further preferably employed by way of a spring force against this running track or edge. Once the pawl reaches the area of the locking recess, it will then engage in the locking recess and thus activate the lock.

It when the pawl audibly engages either via a latching connection or abuts against a, for example metallic stop, so that the engagement of the pawl in the locking recess when reaching the desired or necessary Aufklappwinkels for the user noticeable, especially audible, is particularly advantageous ,

In an alternative embodiment of the folding chair a single joint is used, which extends at least over a considerable part, preferably even over the entire width of the folding table. This joint may then comprise a roller-like first joint part which is connected, for example, to the front frame. The second joint part is then formed like a sleeve and engages over a certain angular range of the first joint part. The pawl can then be arranged on the sides or in the interior of the joint. The same applies to the swivel angle stop.

In principle, reaching the locking recess and locking the locking pawl into the locking recess would be sufficient to limit the pivoting angle as well. However, in this case, the user could release the lock by retracting the pawl from the lock recess and continue the folding stand unfold. In some applications, this will even be desirable if, for example, the folding display is to be set up to a continuous panel, so the two frames are arranged one above the other. In this case, then the board-like, with an angle of 180 ° to each other arranged frame, fully unfolded folding display stand can be made obliquely to a wall or transversely, similar to a banner used.

In most cases, however, the folding display will only be used as a stand-alone advertising, so it is not desirable to expand the two frames beyond a certain angle. So that this can not happen, a separate pivot angle stop is preferably provided. This separate pivot angle stop limits the mobility of the joint regardless of the position of the pawl, so that a predefined, maximum pivot angle can not be exceeded.

A possible embodiment of such a swivel angle stop consists, for example, in the direction of movement of the pawl relative to the corresponding joint part, behind the blocking recess, an abutment region projecting beyond the imaginary extension of the movement path or edge of the pawl and forming a pawl stop. In this embodiment, the pawl between two extreme positions can be moved back and forth, wherein the one extreme position is the position in which it protrudes into the locking recess or locks.

The other extreme position is then the maximum distance from the joint part carrying the locking recess, whereby the pawl also moves around this joint part during the unfolding of the frame parts until it then abuts against the pawl stopper which still projects in this movement path with maximum radius. This means that regardless of the position of the pawl, the pawl stopper ensures that the pawl can not be moved past the stop, which in turn causes that the joint is limited in its mobility by this stop.

If desired, it is also possible to provide a plurality of locking recesses so that the folding stand can be set up in different angular positions and the lock can be activated in each of these angular positions. For this purpose, several locking recesses can be provided on a common radius at an angular distance from one another. When unfolding this folding chair first, the first locking recess is achieved, wherein the pawl, driven by the spring force, tends to lock into this locking recess. If the user desires this installation angle, he can use the folding display.

On the other hand, if the user desires a larger angle, he can move the pawl back out of the first catch recess via a lever or other retraction means or prevent the catch from locking into the first catch recess by permanently actuating this lever or withdrawal means. A further swinging up of the folding sill then causes the achievement of a second locking recess, so that the pawl can engage in this second locking recess. In the same way further detent positions can be provided.

The different locking positions can be used, for example, when the folding display is used in closed, thus wind protected rooms or outdoors. While in a closed room, a small installation angle will be sufficient to safely position the folding display, a larger angle is necessary for potential wind influences. Thus, the user can take into account the different external influences in this embodiment.

Even with several locking positions, a pivot angle stop can be provided for each locking position. For this purpose, the one runway or edge on which the pawl is derived during the unfolding of the joint, for example, stepped, wherein behind each lock recess is arranged one step, so that the user must move the pawl aware to overcome this stage always further outward.

The joint has an actuating device, by means of which the locking effected by the pawl and the locking recess can be canceled. The actuator is preferably designed as a lever or knob and causes when actuated that the pawl is moved away from the locking recess. For this purpose, for example, the pawl may be arranged at the end of a pivot lever, which is employed by the spring force against the runway or edge, wherein the opposite end of the pivot lever protrudes from the user as a tangible end of the joint, so that the user by pivoting the pivot lever the pawl of which the locking recess bearing joint part can move away. A travel limit can also be provided in this direction of movement, so that the pivoting lever is movable back and forth between a detent position in which it slides on the runway or edge or engages in this upon reaching a detent recess, and an unlocking position.

Preferably, the actuator is mounted in a location that is easy for a user to reach when folding the folding chair. An exemplary, particularly preferred embodiment of the invention has an actuating lever as actuating device, which is arranged between the front and the rear frame and in particular is arranged on the hinge. The adjusting lever and the other parts of the folding stand are preferably shaped and arranged so that even with maximum folding the user's fingers can not be pinched.

For example, if the folding display is to be folded in, the user stands in front of the folding display and pulls it easily to himself, so that only one frame is still on the floor. After that, the user operates the adjusting lever, so that the locking of the joint dissolves. Preferably, by gravity works by the user away from the frame in the direction of the user or the other frame and enters the rest position. Furthermore, it can be provided that the actuating device is connected directly or indirectly with the frame facing away from it, so that the user pulls the frame facing away from him by the operation of the actuating device towards him.

The folding display is designed in one embodiment such that the joint on an inwardly facing side of the folding stand has a plug-in receptacle for a further display device, in particular in the form of an information or billboard. Such a plug-in receptacle can be formed, for example, by two mutually facing and vertically extending Einstecknuten with a lower end stop, wherein the hinge is formed in this embodiment so that there is a gap between the front of the rear frame when unfolded folding display stand, at the ends in each case the insertion grooves are provided. These may for example be provided on the joint, when the folding stand has a joint at its two ends. In the insertion then an advertising plate can be inserted, which is commonly referred to as a so-called "Top Card".

Finally, since the adjusting lever for the locking device in a preferred embodiment of the folding stand also extends downwards between the two frames, the insertion groove can be arranged in each case on the adjusting lever. In this embodiment, it is particularly advantageous that the adjusting lever can be made of plastic and so a groove is particularly easy to produce. In this case, the fact is exploited that usually before folding the folding stand the additional information or billboard is removed, so that the two functions are separated in time. However, this is not even necessary, since the levers can be operated even with inserted information or billboard, even the information or billboard can be used as a lever extension or as an additional lever.

Furthermore, an embodiment of the folding stand provides that the frames extend from the hinge to the feet of the folding stand. While in the known folding stands usually from the joints legs are guided down and then a separate frame for receiving the poster or poster is screwed to these legs, preferably at the same time the new folding display the longitudinal profile of the frame form the mainstay. For this purpose, this longitudinal profile is guided beyond the transverse profile downwards, so that the frame itself forms the stand construction for one side of the folding stand.

Furthermore, the frame may preferably have hinged profile cover, which are applied along the outer longitudinal edges of the longitudinal profiles and the transverse profiles and by means of which the display device respectively at least the poster is held. This configuration saves the provision of a separate picture frame which is mounted on the frame. The hinged lid can resiliently press the poster and optionally the protective film against a rear wall.

Further advantageously, it can be provided that the folding display has beveled feet. Preferably, the feet are designed such that they rest over the entire surface in the installation position. In a further embodiment it is provided that between the frame and the display device, preferably the rear wall, a seal is arranged. This prevents both penetration of moisture into the display device and a rattling noise caused by wind movement of the display device.

Further features and advantages of the invention will become apparent from the subclaims and from the following description of preferred embodiments with reference to the drawings.

Short description of the drawing figures

In the figures shows:

Fig. 1 a folding display according to the invention,

Fig. 2 the folding display off Fig. 1 in a side view,

Fig. 3 a detailed view of the folding table in the area of the joint in an exploded view

Fig. 4 the joint in a schematic representation in the unfolded state,

Fig. 5 the joint out FIG. 4 with released pawl,

Fig. 6 that in the FIGS. 4 and 5 shown joint during folding of the folding chair and

Fig. 7 a detailed view of a plug-in receptacle for an additional information or billboard on a display device according to the invention.

Description of the embodiments

FIG. 1 shows a folding display with two presentation devices in the form of a display surface 1. These presentation devices are usually mounting options for posters, for example in the format DIN-A 1 or DIN-A 0.

Basically, the folding display, as well as in FIG. 1 shown on the front and the back have a display surface 1. Alternatively, only one of the two sides can be provided with such a display surface 1. In addition, the display surface 1 may also be formed electronically, and a plurality of display surfaces may be arranged side by side or one above the other. Essential to the present invention is merely the fact that the display surfaces 1 to run on a hinge 4, said hinge 4, the display surfaces 1 hingedly connected to each other and this compound is designed such that the front frame 2 and the rear frame 3 of the folding stand between a storage position, in which the front frame 2 is arranged largely parallel to the rear frame 3, and at least one set-up position is movable back and forth, wherein the unfolding is preferably limited by a pivot angle stop.

In the embodiment shown, the folding display stands in the upper region on its two outer sides in each case a joint 4. These two hinges 4 connect the front frame 2 to the rear frame 3. It is understood that the term "frame" in the sense of the present invention means any form of display surface, itself if this should be formed by a continuous plate. Also, the display surface 1 need not be flat, it may also be formed curved well.

FIG. 2 shows the folding display FIG. 1 in a side view. The exemplary jack-up stand shown here has a height h of about 1.15 m and a depth t of about 0.8 m. The frame 5 of the folding chair 1 have in the set-up an angle α of about 35 °. So that the feet 12 rest safely and preferably over the entire surface with their support surface, these beveled are executed. The foot angle β is dependent on the intended Aufstellwinkel α of the folding table 1 and is in the example shown about 17.5 °.

Fig. 3 shows a detailed view of a joint 4 in an exploded view. The hinge parts 4 'and 4 "are fixedly and non-rotatably connected to the front frame 2 and the rear frame 3. The hinge parts 4' and 4" are rotatably arranged with respect to each other, one not visible here and in the FIGS. 4 to 6 illustrated and explained swing angle stop 8 is provided.

The frame-side parts of the joints, which are provided for connection of the joint 4 to the front frame 2 and the rear frame 3 are pivotable from a mutually approximately parallel arrangement in the rest position in a set-up, in which the frame to the 2 and 3 parallel parts of the joints 4 have the installation angle α to each other. They are so far apart in the rest position, that pinching a finger or the user's hand between the parts of the frame 4 is largely excluded. For this purpose, the movable joint parts preferably have a minimum distance of about 0.04 m in the rest position.

On the joint part 4 "a pawl 5 is arranged, which is integrally connected to an actuating device designed as a lever 6. By actuating the actuating lever 6 in the direction of actuation, the pawl 5 is brought out of engagement with a (not visible here) Sperrausnehmung 7, the rotation with the hinge part 4 ' is connected and in the view shown by the hinge part 4 "hidden.

The user can after pulling the lock formed by the pawl and the locking recess 7 in one operation, the actuating lever 6 continue to pull in the direction of actuation and thus pull the front frame 2 in the direction of the rear frame 3. Preferably, the folding display is previously tilted slightly from the standing behind the rear frame 3 user in the direction of the rear frame 3 in order to free and easy to pivot the front frame 2, supported by gravity.

Furthermore, in the FIG. 3 to recognize that the frames have 2.3 profiles that frame, inter alia, a rear wall of the display surface 1. The profiles are provided with lids which are adapted to clamp a poster and optionally an overlying protective film. The lids are hinged thereto on the outer sides of the profiles and are pressed by a (not shown) spring in the closing direction.

In the Figures 4-6 the area of the joint 4 is shown schematically in a detail view. The joint 4 has a joint section 4 'connected to the front frame 2 and a joint section 4 "connected to the rear frame 3, this association also being able to take place in reverse order "just shown as a stub, as in FIG. 3 can be seen, they protrude with a side region behind the front frame 2 and the rear frame 3 and are attached to the longitudinal profiles of the frame 2 and 3.

Essential for a main aspect of the invention is the formation of a pivot lock within the hinge 4, which connects the left hinge part 4 'to the right hinge part 4. For this purpose, a pawl 5 is provided, which is articulated to the left hinge part 4' 5 is pressed against a spring not shown here against the right hinge part 4 ", wherein the pawl 5 in the unfolded state, as in FIG. 4 is shown in a locking recess. 7 locks.

The pawl 5 can be moved to the left by means of an adjusting lever 6 so that it disengages from the blocking recess 7 and the two joint parts 4 'and 4 "are movable relative to one another moved far to the left until the locking recess 7 is released.

A particular advantage of the present invention is that a pawl stop 9 is provided, beyond which the pawl 5 can not be moved to the left. Thus, if the adjusting lever 6 is pressed to the right, the rear side of the pawl 5 or the upper part of the adjusting lever 6 abuts the pawl stop 9 after a defined pivoting movement, so that the adjusting lever 6 can not be moved further in this pivoting direction. Instead, it is now possible to apply a torque to the left-hand joint part 4 'which is used to be able to pull the front frame 2 to the right via the adjusting lever 6. In this way, the adjusting lever 6 can be used both for disengaging the pawl 5 from the locking recess 7 as well as for drawing the front frame 2 to the rear frame 3.

FIG. 5 shows the stage of the joint 4, in which the adjusting lever 6 has been moved so far to the right that the pawl 5 is moved out of the Sperrausnehmung 7 and the upper part of the actuating lever 6, located above the articulated mounting of the control lever 6 on the left Joint part 4 'is located, rests against the pawl stop 9. In this position, the adjusting lever 6 can not be rotated further to the right, so that a further moment, which is applied to the lower grip region of the adjusting lever 6, is transmitted to the left-hand joint part 4 '.

FIG. 6 shows the associated rotation of the left joint part 4 ', ie the folding of the front frame 2 to the rear frame 3. Here, the front edge of the pawl 5 slides on the roller or disc-shaped part of the joint 4 (dashed lines in the figures) from , so that the pawl 5 no resistance to the forms further folding.

Above the locking recess 7, the roller-shaped or disk-shaped part of the right articulated part 4 "is provided with a nose-like extension which projects beyond the front edge of the locking recess 7 and forms a pivoting angle stop 8. This pivoting angle stop 8 has the function that in all positions of the Pawl 5, the hinge 4 is not about the position in which the pawl 5 abuts the lower edge of the swivel angle stop 8. In this way, the swivel angle stop 8 forms an opening angle limit for the two joint parts 4 'and 4 "and thus for the folding display ,

Fig. 7 shows a detailed view of the folding stand in the region of the joint 4. The hinge 4 has on the inside a plug-in receptacle 10 for an additional information and billboard 11. The plug-in receptacle 10 is formed as a pronounced, downwardly closed slot on each of the two joints 4, in which the additional information and billboard 11 can be inserted, which protrudes with an area protruding from the joint 4, for example as a plastic card in the form of a so-called " Top-Card "sits on top of the folding display. Preferably, the plug-in receptacle 10 is designed such that the additional information and billboard 11 is clamped.

LIST OF REFERENCE NUMBERS

1. 1. Display area
2. 2. Front frame
3. 3. Rear frame
4. 4. joint
5. 5. pawl
6. 6th lever
7. 7. Sperrausnehmung
8. 8. Swivel angle stop
9. 9. pawl stop
10. 10. Plug-in receptacle for an additional information or billboard
11. 11. Additional information or billboard
12. 12. feet

Claims (13)

Folding display for the presentation of at least one display surface (1), in particular in the form of a poster or a flat display, with a, the display surface (1) carrying the front frame (2) and a rear frame (3), the upper sides of at least one joint ( 4) are connected to each other and from one storage position by folding in at least one set-up position, in which the front frame (2) and the rear frame (3) from bottom to top at an angle (α) are arranged tapering towards each other, are pivotable to each other, wherein a releasable pivot lock for fixing the hinge (4) is provided at least in a set-up position, characterized in that the pivot lock by a the joint (4) blocking pawl (5) is formed, which reciprocates from a release position to a locking position is movable. Folding stand according to claim 1, characterized in that the pawl (5) on a hinge part (4 ') via a setting means is movably arranged and acts on the joint by positive engagement in a locking recess (7) on the corresponding hinge part (4 "). Folding stand according to claim 2, characterized in that the adjusting means of a rotatably or pivotally on the front frame (2) or the rear frame (3) arranged adjusting lever (6) is formed, at one end of the pawl (5) is arranged and extending with a handle portion down in the area between the front frame (2) and the rear frame (3). Folding stand according to claim 2, characterized in that the adjusting means of a mounted on the folding stand pressure element, in particular a push button is formed, which is mechanically connected to the pawl (5) such that a force exerted on the pressure element release force in the pawl (5 ) is able to move from the locking position to the release position. Folding display according to one of the preceding claims, characterized in that a spring is provided which acts directly or indirectly on the pawl (5) to the pawl (5) in the To urge the locking position. Folding display according to one of the preceding claims, characterized in that a pivoting angle limit for limiting the angular position of the front frame (2) and the rear frame (3) is provided in the installation position, wherein the formation of the pivoting angle limit, the joint (4) an additional stop for the pawl (5), which limits the opening movement of the joint (4) regardless of the position of the pawl (5). Folding stand according to claim 6, characterized in that for forming the pivot angle limiting the locking recess (7) having hinge part (4 ") above the locking recess (7) has a pivot angle stop (8), against which the together with the corresponding hinge part (4 ') moved and in the release position located pawl (5) strikes at a maximum opening angle. A folding display according to the preceding claim, characterized in that the joint (4) has a pawl stop (9) which limits the movement of the pawl (5) in the direction of the release position in such a way that the opening area of the pawl (5) during the entire movement range Joint (4) by the pivot angle stop (8) is limited. Folding stand according to claim 3 and claim 8, characterized in that the adjusting lever (6) and the pawl stop (9) are designed and arranged in such a manner, with the adjusting lever (6) resting against the pawl stop (9), a sustained pressure on the adjusting lever (6). in the release direction a closing moment on the first joint part (4 ') applies, whereby for transferring into the storage position of the front frame (2) is urged against the rear frame (3). Folding display according to one of the preceding claims, characterized in that the hinge (4), in particular between or above the upper sides of the front frame (2) and the rear frame (3) has a plug-in receptacle (10) for inserting an additional information or billboard ( 11). Folding stand according to the preceding claim, characterized characterized in that two opposite joints (4) are provided with a common pivot axis, wherein each hinge (4) on its the other joint (4) side facing an adjusting lever (6) and the adjusting lever (6) each one, the opposite facing lever (6) facing, in particular in the unfolded state of the folding stand along the bisector of the angle between the front frame (2) and the rear frame (3) extending groove for forming the plug-in receptacle (10). Folding stand according to one of the preceding claims, characterized in that the front frame (2) and the rear frame (3) is formed by longitudinal and transverse profiles and extending to form feet (12) of the folding stand, the longitudinal profiles on the lower cross sections , wherein the feet (12) are formed by the lower ends of the longitudinal profiles. Folding stand according to claim 12, characterized in that the feet (12) are bevelled in such an angle (β) that in the set-up position, the feet (12) are flat on a flat surface set up.

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