DE4100377C2 - - Google Patents

Abstract

Individual frame profiles (1, 21, 27, 30, 34) can be braced against one another to form an exchangeable frame by means of a bistable spring clamping element (9). An exchangeable frame of this type has at least two separation joints (10) which are arranged at opposite points on the frame, each have at least one bistable spring clamping element and thus allow rapid opening or closing of the separation joint (10). For the purpose of guidance, the frame profile has two inwardly directed, plate-type projections (2, 3) which are arranged parallel to the picture plane. The space between these projections (2, 3) serves as a guide space (12) in which a plate-type guide part (6) is arranged movably towards at least one side of the frame. Located in the movable side of the guide part is a connecting link cutout (7) which is designed in terms of shape such that a power accumulator (8) is mounted by one end (23b) so as to be axially rotatable in a counter bearing (19) while the other end (23a) is arranged so as to be displaceable along the path (16) of the connecting link from one of the two power accumulator end positions (15b) to the other (15a) or vice versa, the separation joint (10) being held in the closed position (15a) under a prestress of the power accumulator (8). The power accumulator (8) and frame profile projections (2, 3), connected to one another by a connecting pin (13), together with the guide part (6) and the connecting link cutout (7) arranged therein form the bistable spring clamping element (9). <IMAGE>

Description

The invention relates to a connection for Frame profile strips of presentation facilities, especially picture frames or display cases, each two frame profile strips by means of resilient clamping elements their ends are braced against each other and where the frame profile strips projecting inward legs for holding a plate-shaped object in a have a plane parallel to the main plane of the frame.

For connecting frame profile strips, especially for Mobile frames, devices are known, each of which two frame profile strips abutting at their ends can be clamped with the aid of resilient clamping elements. Such a device is by the utility model DE 81 35 367 U1 become known, the tensioning element made of there is a curved leaf spring, the ends of which engage in recesses in the frame profile strips and thus the ends of the frame profile strips against each other tense. When dismantling such a frame goes however any cohesion between the tensioning element and lost the frame profile strips, so that a  Reassemble some skill and a firm one Working document required.

In another known change frame (DE 30 27 258 A1) becomes a front loading of pictures allows hollow sections of the mitered to length Frame strips at least in the area of their two ends have a longitudinal slot facing the center of the frame, that corner connector protrudes from the corner Form support part for the rear wall or the picture and the like, with a web that fits through the longitudinal slots completely into those abutting on this corner Hollow profile insertable elbow is connected, and that can be snapped into recesses in the hollow profiles Holder cam or the like two each one end and corresponding to a spread position of the frame profile strips Notches are assigned. To the removable frame in To keep a closed position are spring tongues provided, but not the corners of the frame parts clamp together, but only in the hold the collapsed position.

These disadvantages are dealt with in the patent application P 40 10 391.9 already proposed removable frame avoided that at least two clamping elements with one Link groove guidance using an energy accumulator, Form parting lines. In this version there is one appropriate management guaranteed; through the two and more Clamping elements per frame come about because of the tight Link groove guide of the sliding body to cant that the Difficulty opening and closing the frame.

Another both economic and technical disadvantage, is that the tensioning element is not part of the frame, but is formed from additional components that expensive with specially provided holding devices  the frame profiles must be connected. Often Pressing the tensioning device loosens the connection to the Frame profile, so that a precisely closed parting line then is no longer guaranteed.

Another disadvantage is that the complex structure of the clamping element and the necessary holding device, flat picture frames not can be manufactured.

The invention has for its object the exchange of objects to be exhibited in presentation facilities, especially the Exchange of pictures for picture frames and frameless picture carriers to simplify, especially with wall anchored Picture frames without having to be disassembled to make one Change images.

The task is inventively by the following measures solved:

• a) two projections of the frame profile strips form one Leadership, in which a plate-shaped, opposite at least one frame profile bar movable arranged guide part engages;
• b) the tensioning element is a bistable spring tensioning element, which has at least one energy accumulator;
• c) the guide part has at least one closed Setting recess with two opposite End positions for the lift mechanism, one of these Link path connecting end positions as well as in essentially formed from a nose abutment;
• d) the energy accumulator is in the slot recess arranged that one end of the energy accumulator in Abutment is supported and the other end of the Energy storage is assigned to the scenery path, wherein this end of the energy accumulator either in one or the other end position of the setting recess is at rest;
• e) the energy store points to the scenery path  end facing a connecting pin through which the energy accumulator with the two projections Frame profile strips is connected;
• f) the connecting pin is in the end position in which the Partition between abutting Frame profile strips is closed under a Preload.

The advantages achieved by the invention are that the connection can be released or tensioned without any screws, brackets, brackets, To remove or toggle lever locks or the like actuate.

The connection according to the invention holds the frame profile strips both in the closed position and in one Open position and is therefore also bistable in the following Called spring tensioning element. The compound of the invention can be arranged on two or more end joints. At with the equipped connection frame according to the invention an image exchange from the front is possible without the frame must be removed from the wall. The same There is an advantage in display cases or others Presentation facilities. The device according to the invention is suitable for both round and square frames or Showcases with three, four or more corners. The ones to be connected Frame profile strips are preferred, but not exclusively, mitred and consist of extruded aluminum, plastic or wood.  

In the case of an interchangeable frame with two separating joints arranged opposite one another, the process of exchanging images is as follows:
The frame is placed with the back on a flat surface, by pressing on a frame leg towards the outside of the frame, the frame opens at the parting lines, the image can be exchanged from the front. The top of the overhead, inwardly projecting leg of the frame profile strips serves as a support surface for the objects to be exchanged when the joint is open. The joints are closed by pressing the outside of the frame towards the center of the frame. When opening or closing, the pressure initially increases due to the pressurization of the energy accumulator until the energy accumulator snaps into the other end position after a maximum force has been exceeded. At least in the closed position, the joints are held under a prestress.

By the measures listed in the subclaims advantageous expedient embodiments of the Main claim specified invention possible.

A particular advantage is that the bistable spring element is part of the Frame and is made up of components such as profile strips, guide parts, Lift mechanism and connecting pin. With a particularly cheap one Execution according to claim 4, the guide part and the setting recess through the Picture frame rear wall formed so that the connection only from the usual components, namely from frame profile, Picture frame rear wall and connecting pin. The The back of the picture frame points at least two setting cutouts.

Another advantage is that the guide part is a flat angle, the at least on one side of the angled leg, a closed setting recess having.

In order to firmly anchor picture frames on the wall, it is advantageous if the guide part additionally has a wall fastening device, which is designed so that between the guide member and the wall Distance exists to the function of the movable frame parts guarantee.  

The guide part according to claims 2, 3 and 4 can be made of metal, Be made of plastic or other materials.

The energy accumulator is a compression spring that consists of an arc shape or a combination of arc and spiral shape is formed; your Training and arrangement in the setting recess goes from the Claims 5, 6 and 7 emerge.

If the compression spring is made up of a combination of arc and spiral shapes there is, with the same dimensioning Setting recess achieved an increase in the energy storage. The spiral section also creates a kind of axial movement in the abutment, which allows the regulated sequence of the snap movement supported. This arrangement makes it possible to store energy and One-piece guide part, e.g. B. plastic in Injection molding process.

The execution of the energy accumulator can according to claim 7, except for the already mentioned plastic with steel elastic behavior also with spring steel tape or spring steel wire.

The backdrop path arranged in the backdrop recess, which connects between the two force storage end positions, runs in the opening direction of the parting line, the exact course starts claims 8, 9, 10, 11 and 12.  

The one for a locking and parallel to the main plane of the frame Opening movement important guide space is made up of two profile projections formed and can be open at the projection ends or by a web be closed.

If the guide part is prismatic, it can only interact with a section of a profile strip, so that a frameless picture or mirror holder is also possible.

 In this application as a wall bracket the guide part is a plate-shaped fastening device with a recess on the front and rear for the receptacle of the profile last section. Through this training is the mobility of the guide part to the wall and z. B. one Rear mirror surface guaranteed.

Embodiments of the invention are shown in the drawing and are explained in more detail below with reference to FIGS. 1 to 25.

It shows:

Fig. 1 is a perspective view of a connection by means of a bistable spring tightening element with diagonal parting line is opened,

Fig. 2 is a perspective view of a connection by means of a bistable spring tightening element with parallel open parting line,

Fig. 3 is a perspective view of the guide part which is formed as a picture frame rear wall,

Fig. 4 is a front view of a guide member formed as a flat angle with a coulisse recess,

Fig. 5 is a front view of a formed as a flat angle guide part with two sliding recesses and wall mounting,

Fig. 6 shows the front view of a coulisse recess of FIGS. 1, 4 and 14,

Fig. 7 shows the front view of a coulisse recess according to Fig. 2,

Fig. 8 shows the front view of a coulisse recess having an arcuate sliding path,

Fig. 9 is a partial cross section through a change of frames using a flat angle as a guide part,

Fig. 10, the end face of a frame profile with two image receiving chambers,

Fig. 11, the front side of a frame section with an image-receiving chamber and a closed by a web guide space,

Fig. 12, the end face of a frame profile with two image receiving chambers and a closed by a web guide space,

Fig. 13, the end face of a frame profile made of wood with open guide space,

Fig. 14 is a front view of a rectangular frame exchange of FIG. 9 diagonally opposite with open joints at two corners,

Fig. 15 is a front view of a rectangular removable frame with open joints and wall fixtures,

Fig. 16 is a front view of a rectangular removable frame with two open joints, wherein the guide part is formed by the picture frame rear panel,

Fig. 17 is a front view of a removable frame, in which an open parting line is located at each corner, and the guide part is formed by the picture frame rear panel of Fig. 3,

Fig. 18 is a corner of a frameless image carrier, which consists of a portion of a picture frame rear panel of FIG. 3, and an image of a holder portion of the frame profile according to Fig. 9,

Fig. 19 is a perspective view of an image holder which consists of a portion of the frame profile according to Fig. 9,

Fig. 20 is a perspective view of a wall attachment, which is designed as a guide part for the picture holder according to Fig. 19,

Fig. 21 is a front view of an energy accumulator with an arc-shaped portion in which the two ends are formed ösenförmig,

Fig. 22 is a front view of the corner of a frame with a closed parting line and angular design guide part,

Fig. 23 is a front view of a portion of the guide member with an alternate form of the force accumulator,

Fig. 24 is a front view of a corner of the frame of FIG. 14 and inset energy accumulator according to Fig. 25,

Fig. 25 is a front view of a guide portion with a further variant of the energy accumulator.

Fig. 1 shows a perspective view of a frame corner, forming a bistable spring tensioning element 9. Two frame profile strips 1 are connected to one another by a guide part 6 , which consists of a flat angle forming a right angle according to FIG. 4, one profile strip being firmly connected to the associated angle leg by means of glue, rivets or compression, while the other angle leg is part of the bistable Spring tensioning element 9 . The parting line ( 10 ) is open in the diagonal direction and has a parallel guide to the main plane, also called the image plane. An energy store 8 according to FIG. 21 is located in the slot recess 7 , and a connecting pin 13 is also shown in FIG. 1.

Fig. 2 shows a frame corner, which forms a bistable spring tensioning element 9 , which is a variant of Fig. 1; it is formed of the profile strip 27 and a flat angle with one-sided coulisse recess according to Fig. 7, the parting line 10 has an opening direction parallel to the movable frame bar.

A picture frame rear wall serving as a guide part 6 is shown in FIG. 3; the sliding path 16 runs according to claim 11, FIG. 17 shows the front view of such a frame with four opened parting lines 10 .

The flat angle as the guide part 6 in FIG. 5 shows a device for the wall fastening 14 , which is provided with a bore 26 . The two legs of the flat angle each have a link recess 7 , in which the link path 16 runs diagonally to the movable frame strips.

Fig. 6 shows a scenery recess 7 , the scenery path 16 installed in the frame has a diagonal course to the movable frame strips, only in the closed position 15 a, the energy accumulator 8 is in a locking section, the section 17 , which is parallel to the horizontal frame strips having. This configuration of the setting recess 7 ensures that the closed frame corner does not open by itself due to the weight of the plate-shaped object 4 or other vertical tensile forces.

In FIG. 7, the sliding path 16 , installed in the frame, shows a parallel guide to the movable frame strips, as can be seen from FIG. 2.

Due to the extent of the curvature of the link path 16 in FIG. 8, fine tuning of the energy accumulator 8 and the link recess 7 is possible; Therefore, the compression spring can be selected so that a maximum of bias in the closed position is opposed to a minimum of effort in the displacement movement. This makes it possible to keep frame corners closed under load even without the locking section 17 shown in FIG. 6.

The slide path 16 shown in FIGS. 6, 7 and 8 can, depending on the arrangement of the parting line 10 in the frame, be arranged in all angular degrees. The setting recess 7 is then aligned so that the setting path 16 points in the desired opening direction of the parting line.

Force storage 8 according to FIGS. 21, 23 and 25 and link recess according to FIGS. 6, 7 and 8 represent the core of the bistable spring tensioning element 9 .

The force accumulator, in the coulisse recess introduced with the seat of the end 23 a in one of the two power storage end positions 15 a or 15 b and the other end 23 b or 25 in the abutment 19, is guided, upon displacement of the end 23a along the sliding path 16 and is thereby pressurized by reducing the distance to the abutment 19 . After exceeding the minimum distance, end 23 a then snaps into the other end point.

In Fig. 9 is a cross section through the frame section 1. A guide space 12 is formed between the two frame projections 2 and 3 . The guide part 6 is located in this. The plate-shaped object 4 can consist of a glass pane, an image and possibly also the rear wall of the picture frame and is located between the profile projections 2 and 5 , which is why this intermediate space is also referred to as an image chamber 20 .

The frame profile 21 in FIG. 10 has two picture chambers 20 , the glass pane being in the front and the picture with the picture frame rear wall in the rear. With this arrangement, plastic pictures or flat exhibition objects such. B. coins or the like are presented.

The Fig. 11 comprises a frame profile 27 with a closed guide chamber 12. The two profile projections 2 and 3 are connected at the end by a web 22 . For this frame profile the setting recess 7 according to FIG. 7 is used, in which the setting path 16 is in a parallel course to the movable frame strip according to FIG. 2.

Fig. 12 shows, as a variant, a frame profile (34) having a closed guide chamber 12 and two image chambers 20.

In the embodiment of FIG. 13, a frame profile is shown in wood 30, the profile projection 5 is provided with a semi-circular profile.

The exemplary embodiments according to FIGS. 14 to 16 show frames with two diagonally arranged parting lines 10 , which are in an open state.

A frame having four open joints 10 shows the Fig. 17, the opening direction includes a right angle to the movable frame bars on. The guide part 6 is formed by the picture frame rear wall according to FIG. 3.

In the embodiment according to FIG. 18, a section of a profiled strip 1 , which is designed according to FIG. 19, is in an arrangement parallel to the rear frame of the picture frame, the rear wall of the frame functioning as a guide part 6 . The link path 16 has a right angle to the outer edge 32 of the guide part.

Fig. 20 shows a guide member 6 which is constructed as a wall mounting and includes a recess 33 which is provided for receiving a retainer. This mount is shown in FIG. 19 from a portion of the frame profile 1 and is connected by means of a connecting pin 13 to the wall mounting. The wall fastening is fastened to the wall through the bore 35 by means of screws.

According to Fig. 21, the energy accumulator is a compression spiral spring 8 with two lug-shaped ends 23 a u. 23 b and an arcuate central part 24 . When the energy accumulator is pressurized, the central part 24 bends more, thereby absorbing forces which are returned to the predetermined preload after the maximum force has been exceeded.

FIGS. 22 and 24 show frame corners with closed joints 10 and two alternative power memories 8.

The alternative embodiment according to FIG. 23 shows an energy accumulator 8 , which consists of one piece with the guide part 6 , and protrudes spirally from the abutment 19 , swivels towards the central part 24 into an opposing arch shape 24 and at the other end in an eyelet shape 23 a ends.

The force memory 8 of Fig. 25 is up to the connection with the abutment 19 identical to the embodiment in Fig. 23. Instead of the connection to the guide part 6, the force accumulator 8 a shoulder 29 which in an in-abutment 19 groove 31 has its seat.

Claims (17)

1. A compound of the frame profile strips of presentation facilities, in particular picture frame or image display, in each case two frame profile strips are abutting against each other can be braced by means of resilient clamping elements at its ends, and wherein the frame profile strips have in parallel to the principal plane of the loop inwardly projecting leg for supporting a plate-shaped object in due to the following features:

• a) two projections ( 2 , 3 ) of the frame profile strips ( 1 , 21 , 27 , 30 , 34 ) form a guide space ( 12 ) into which a plate-shaped guide part ( 6 ) engages, which is movable relative to at least one frame profile strip;
• the tensioning element is a bistable spring tensioning element ( 9 ) which has at least one energy accumulator ( 8 );
• c) in the guide part ( 6 ) has at least one closed link recess ( 7 ) with two opposite end positions ( 15 a, 15 b) for the energy accumulator ( 8 ), a link path ( 16 ) connecting these end positions and an essentially one nose ( 18 ) formed abutment ( 19 );
• d) the energy store (8) is so arranged in the coulisse recess (7) that the b one end (23, 25) of the force accumulator (8) is mounted in the abutment (19) and said other end (23 a) of the force accumulator ( 8 ) is assigned to the link path ( 16 ), this end ( 23 a) of the energy store ( 8 ) resting either in one ( 15 a) or the other end position ( 15 b) of the link recess ( 7 );
• e) the energy accumulator ( 8 ) has at the end ( 23 a) facing the link path ( 16 ) a connecting pin ( 13 ) through which the energy accumulator ( 8 ) with the two projections ( 2 , 3 ) of the frame profile strips ( 1 , 21 , 27 , 30 , 34 ) is connected;
• f) the connecting pin ( 13 ) is in the end position ( 15 a) in which the parting line ( 10 ) between abutting frame profile strips ( 1 , 21 , 27 , 30 , 34 ) is closed under a prestress.

2. Connection according to claim 1, characterized in that the guide part ( 6 ) is a flat angle which has at least in one angle leg side a closed slot recess ( 7 ). 3. Connection according to claim 2, characterized in that the guide part ( 6 ) has a wall fastening device ( 14 ). 4. Connection according to claim 1, characterized in that the guide part ( 6 ) is formed from the picture frame rear wall and has at least two closed setting recesses ( 7 ). 5. Connection according to claim 1, characterized in that the energy accumulator ( 8 ) is a compression coil spring which is arcuate ( 24 ) and the two ends ( 23 a, 23 b) of which run out in an eyelet shape ( Fig. 21). 6. Connection according to claim 1, characterized in that the energy accumulator ( 8 ) is a compression spring, consisting of an arcuate section ( 24 ) with an eyelet end ( 23 a) and a spiral end ( 25 ), which with the abutment ( 19th ) is firmly connected, the curvature of the spiral ( 25 ) being opposite to the curvature of the arch ( 24 ). 7. Connection according to claim 1, characterized in that the energy accumulator ( 8 ) is a compression spring, consisting of an arcuate section ( 24 ) with an eyelet end ( 23 a) and a spiral end ( 25 ), which has a protruding shoulder ( 29 ) which engages in a groove ( 31 ) in the abutment ( 19 ), the curvature of the spiral ( 25 ) being opposite to the curvature of the arc ( 24 ). 8. Connection according to one of claims 1 to 4, characterized in that the link path ( 16 ) has an oblique course to the outside ( 36 ) of the associated frame bar. 9. Connection according to claim 8, characterized in that the sliding path ( 16 ), in the closed position ( 15 a) of the parting line ( 10 ) has a section ( 17 ) which has a parallel course to the associated frame bar ( Fig. 6). 10. Connection according to one of claims 1 to 4, characterized in that the link path ( 16 ) has a parallel course to the outside ( 36 ) of the associated frame bar. 11. Connection according to one of claims 1 to 4, characterized in that the link path ( 16 ) forms a right angle to the outside ( 36 ) of the associated frame bar. 12. Connection according to one of claims 1 to 4, characterized in that the link path ( 16 ) has an arcuate course in which the two energy storage end positions ( 15 a, 15 b), in the position to each other obliquely to the outside ( 36 ) of the associated frame bar are arranged ( Fig. 8). 13. Connection according to claim 1, characterized in that the guide space ( 12 ), which is formed from the two profile projections ( 2 , 3 ), is open to the inside of the frame. 14. Connection according to claim 1, characterized in that the guide space ( 12 ), which is formed from the two profile projections ( 2 , 3 ), is closed towards the inside of the frame by a connecting web ( 22 ). 15. Connection according to claim 1, characterized in that the guide part ( 6 ) is prismatic, is provided on the front and rear with a guide groove ( 33 ) and has a bore ( 35 ) at one end. 16. Connection according to one of claims 1 to 5, characterized in that the abutment ( 19 ) is formed by a nose ( 18 ) which surrounds the energy storage end ( 23 b, 25 ) so that between the abutment ( 19 ) and the the remaining recess in the setting, only a wide opening is defined as is required for the axial movement that occurs when the force accumulator ( 8 ) is moved in the abutment ( 19 ). 17. Connection according to one of the preceding claims, characterized in that the abutment ( 19 ) in the link recess ( 7 ) is arranged so that it is located at a greater distance from the two force storage end positions ( 15 a, 15 b) this link path connecting these two end positions ( 16 ).