CORNER PIECE FOR FRAMES

Abstract: Corner piece for frames for joining together frame sides situated adjacent the corner piece, which sides are tubular or profile-shaped and adapted in their inner cavity to receive legs which are angularly arranged on the corner piece (1) and interconnected by means of an intermediate part (4). Each leg consists of two parallel shanks and each shank is shaped so as to be complementary to the cavity of the frame side profile (5, 8) engaging the respective shank so that the shank can be inserted guidingly and with a certain friction in the cavity of the profile. The corner piece is composed of two identical corner parts (2,3) interconnected by fastening means, the legs and the intermediate part of the corner piece (1) having, on one hand, a first symmetry plane coinciding with the frame plane and, on the other hand, a second simmetry plane or bisector plane through the bisector to the angle between the legs of the corner piece (1), said second plane being perpendicular to the first symmetry plane.

Description: CORNER PIECE FOR FRAMES The present invention relates to a corner piece for frames intended for displaying or advertising pur¬ poses, for instance of tne type where a sheet of card¬ board or otner rigid material can be inserted from one side of the frame. Sucn frames are generally used in shops and other places o± sale to give information about goods, prices, news, etc. The frames may either be placed on a counter with tne aid of a foot or be hang up in wires. It is also possible to interconnect seve- ral frames by means of oblong intermediate pieces which also permit angular interconnection of tne frames. It is previously known to manufacture frames of this type by means of extruded profiles which are avail¬ able in metre-lengtn and cut to the desired length in order to constitute the sides of the frames. The pro¬ files are interconnected by means of corner pieces so as to form a complete frame. Frames for advertising and information purposes often are used only once, e.g. in fairs, exhibitions and the like. It is therefore imperative that tne frames be cheap. In this respect extruded profiles constitute an inexpensive element manufactured by means of simple tools wnile, on the other hand, the frame corners are more expensive because, for one thing, tools with mo- bile parts are required and also because the detail pro¬ per will become more homogeneous and requires more ma¬ terial. This invention permits making a cheap frame be¬ cause the corner pieces consist of two corner parts and the tool required for the corner parts can be made up very simply in the form of two stationary tool halves and the corner parts may be formed of a small amount ot " materia.. Moreover, it is easy to assemble and dis¬ assemble the frames and they may be used repeatedly in " various places without requiring much work. According to the invention a corner piece for frames is provided for joining together frame sides situated adjacent the corner piece, which sides are tubular or profile-shaped and adapted in their inner cavity to accommodate legs which are angularly disposed on the corner piece and interconnected by. eans of an interme¬ diate part of the corner piece in that each leg consists of two parallel shanks and that each shank is shaped so as to be complementary to the cavity of the frame side profile engaging the respective shank so that the shank can be inserted guidingly and with a certain friction in the cavity of the frame side. In a preferred embodiment of the invention the cor- ner piece is composed of two identical corner parts in¬ terconnected by fastening means in such a way that the legs and intermediate part of the corner piece will have a first symmetry plane coinciding with the plane of the frame and also a second symmetry plane or bisector plane through the bisector to the angle between the corner piece legs, said second plane being perpendicular to the first symmetry plane. In one embodiment of the invention the corner piece has two legs, the angle between the legs being right, i.e. 9U°. In another embodiment the corner piece has three legs disposed in T-fashion, two of which are aligned with one another while the third leg lies in the bisec¬ tor plane and makes an angle of 90 to each of said first-mentioned legs. In an important embodiment the fastening means of the corner part comprises a cylindrical connection piece which is disposed at right angles to the first symmetry plane and situated in the bisector plane and the axial end of which consists of a supporting edge lying in the first symmetry plane and on one side of the bisector plane, a guide pin projecting above the first symmetry OMPI plane and at right angles thereto, while the connection piece has, under the first symmetry plane and on the other side of the bisector plane, a downwardly directed recess shaped so as to be complementary to the upward- ly projecting guide pin so that the guide pin of one of the interfacing connection pieces will engage the recess of the other connection piece and vice versa when two interfacing corner parts are joined to form a cor¬ ner piece. In one embodiment the fastening means has boundary surfaces lying in tne first symmetry plane and bearing against each other when two corner parts have been joined into a corner piece. In still another embodiment tne interengagmg cor- ner part guide pins are glued together. In a further embodiment the shanks of the legs have inside their outer portions a narrower portion so that a play is obtained in this portion between the shanks and the profile enclosing tne shanks. In another embodiment the guide pin has side faces lying in the bisector plane. The invention will be described more fully below with reference to the accompanying drawings in which; Fig. 1 is a perspective view showing the parts in- eluded in a corner prior to mounting of the corner; Fig. 2 is a perspective v ew showing a corner part witn two shanks; Fig. 3 is a cross-section, taken on line III-III in Fig. 2, through the interfacing guide pins of two corner parts, betore the pins have been brought together; Fig. 4 shows the same pins in entering position; Fig. 5 snows the pins completely joined in engage¬ ment with each other; and Fig. 6 is a cross-section on tne first symmetry plane VI-VI in Fig. 5. In Fig. 1 the complete corner piece is designated by 1 and this is composed of two corner parts 2 and 3 which have each one intermediate part 4. Formed on the intermediate part 4 between the corner parts 2 and 3 are guide pins by means of which the corner parts are joined together as will be described in more detail be- low. An extruded hollow profile 5 can be passed over the corresponding shanks of the corner parts 2 and 3. The dimensions are chosen so that shanks and profile m engage each other with a certain deformation or resi- lience so that they cannot slide apart. A groove 6 is made in the profile 5 in order to recieve the edge of a sheet 7 provided with information. The two other shanks of the corner piece, which are directed down to the right in the figure, are adap- ted to receive two identical profiles 8 which face each other so that a slot 9 will be formed between the pro¬ files. The sheet 7 can be passed through the slot 9 in¬ to the frame as finally mounted. The sheet 7 can be taken out of the frame and be exchanged for another sheet with other information, when so desired. Fig. 2 is a perspective view of a corner part 10. The shanks of the corner part are designated by 11 and 12, and 13 is the intermediate part joining the two shanks. The shanks 11 and 12 are equal in length and make an angle of 90 to each other. The shanks are pro¬ vided with thin walls and have rounded end parts 14 and a recessed section 15 between -these end parts and the inner part 16. In this way the profile passed over the shank will bear resiliently against the end part 14 and the inner part 16 so as to provide a certain engagement which gives a satisfactory friction between said parts and satisfactory guidance is also obtained between shanks and profile since they are provided with thin resilient walls. The intermediate part 13 includes a tubular cylind¬ rical connection piece 17. In the case shown the con¬ nection piece is circular-cylindrical with an axis 18 being perpendicular to the plane in which the shanks are situated as well as to the plane of the entire frame. Vertical planes through the shanks 11 and 12 intersect along the axis 18. In the case shown these planes make an angle of 90 . A bisector plane 19 through the axis 18 divides up the angle between the planes through the shanks into two equal parts, i.e. in this case it makes an angle of 45° to these two planes. The tubular connection piece 17 has a supporting edge 20 which is perpendicular to the axis 18 and the surface of which lies in the central plane, i.e. in the first symmetry plane, of the finished frame. A guide pin 21 projects upwards above the supporting edge 20 and is semi-cylindrical. The side faces 22 of the cy- Under, which are parallel with the axis 18, lie in the bisector plane 19. The side faces 22 extend all the way down to the bottom 26 of the connection piece 17. Pro¬ vided between the side faces 22 and .the inner wall of the tubular connection piece 17 is a recess 23 the in- ner contour of which is cylindrical and symmetrical with the outer contour of the guide pin 21 with respect to the bisector plane 19. This involves that it is possible to join two corner parts 10 by turning one corner part (10* below) upside down so that the vertical plane of the shanks 11, 12 coincide with the vertical plane of the shanks 12' and 11', respectively, and the guide pin 21 ' can be passed inwards on the upper part down within the recess 23 of the lower part as will be described in more detail below. Fig. 3 shows a section through the tubular connec¬ tion piece 17 and the guide pin 21 in a lower corner part 10 along the plane designated by III-III in Fig. 2 and passing through the axis 18 at right angles to the bisector plane 19. A corner part is designated by 10' and is turned upside down and placed over the corner part 10 so that the axes 18, the vertical planes of the shanks 11, 12' and 12, 11' respectively and the bisector planes 19 and 19' respectively coincide. Thus, in Fig. 3 the bisector planes- 19, 19' extend at right angles to the plane of the paper through the axis 18. In accordance with the above description the side faces 22 of the corner part 10 and the side faces 22' of the corner part 10' will thus both lie in the common bisector plane 19, 19' but at an axial distance from each other. The supporting edges 20 and 20' and bevels 25, 25' on the respective connection pieces 17 and 17' also appear from the figure. Also the upper part of the guide pins 21, 21' has bevels 24, 24' at the up¬ permost corners of the side faces 22, 22'. The bevels 25, 25', 24, 24' facilitate the entering of the guide pins 21, 21* into the respective recesses 23' and 23. In the figure 23, 23' designate the recesses in the cor¬ ner parts 10 and 10* respectively, while 26, 26' desig¬ nate the bottom portions. Fig. 4 shows how the side faces 22 and 22' have come in contact with each other when the corner parts 10, 10' have been moved towards each other along the common bisector plane 19, 19'. During continued tele¬ scoping movement along the bisector plane the guide pin 21' will enter and pass into the recess 23, which is facilitated by the bevel 25 and to the left of the bi- sector plane the guide pin 21 is passed in the same way into the recess 23', where the bevel 25' facilitates the telescoping movement. In Fig. 5 the corner parts 10, 10' have been brought together as far as possible in that the supporting ed- ges 20* and 20 have been moved into contact with the upper edges 25 and 25', respectively,of the tubular con¬ nection pieces 17 and 17' respectively. As the two cor¬ ner parts 10, 10' are identical the supporting edges 20, 20' will thus lie in the centre plane of the corner piece as well as of the entire frame. It should also be pointed out that the corner parts 10, 10' cannot turn relative to each other about the axis 18 since this is CMP- prevented by the engagement between the side faces 22, 22' of the guide pins 21, 21'. One has thus obtained a firm and dimension-stable corner piece which can be used as has been described in conjunction with Fig. 1. To further increase the shape-permanance of the corner piece glue or some other bonding agent may be applied to the surfaces 20, 22, 20', 22*, 25, 25* etc, which lie in contact with each other in the finally mounted position. Fig. 6 shows a section along the frame centre plane VI-VI in Fig. 5 from which it appears how the configura¬ tion of the outer contour of the cut guide pin 21 ' is complementary to the inner contour of the recess 23. Otherwise the same reference numerals as before are used in this figure. It is obvious that anyone skilled in the art can modify the embodiment in various ways within the scope of the invention, such as this is specified in the ap¬ pended claims. Thus, for example, the tubular connec- tion pieces 17 can be given another shape than the cir¬ cular shape, * the shanks can be formed so as not to be symmetrical around its vertical plane, the outer mantle on the intermediate parts 4 can be drawn down to the symmetry plane of the frame so as to bear against each other, the guide pin 21 and the recess 23 can be re¬ placed by several pins and recesses, etc. OMPI Sty , IPO .Λ- J

Claims: AMENDED CLAIMS [received by the International Bureau on 15 October 1984 (15.10.84); original claim 1 amended ] 1. (Amended) Corner piece for frames for joining frame sides situated adjacent the corner piece, which sides are tubular or profile-shaped and adapted in their inner cavity to receive legs which are mutually angular- ly arranged on the corner piece (1) and interconnected by means of an intermediate portion (4) , said legs com¬ prising shanks (11, 12*, 11', 12) rigidly fixed to each other, and being parallel and spaced, c h a r a c t e r i z e d in that each shank ( 1, 11', 12, 12') is shaped so as to be complementary to the cavity of the frame side profile (5, 8) engaging the respective shank so that the shank can be inserted guidingly and with a certain friction in the cavity of the profile. 2. Corner piece as claimed in claim 1, c h a - r a c t e r i'z e d by two identical corner parts (2, 3; 10, 1 ') interconnected by fastening means (17, 17'), the legs (11, 12'; 11', 12) and intermediate part (4; 13, 13') of the corner piece having, on one hand, a first symmetry-plane coinciding with the plane of the frame and, on the other hand, a second symmetry plane or bi¬ sector plane (19) through the bisector to the angle be¬ tween the legs of the corner piece, said second plane being perpendicular to the first symmetry plane. 3. Corner piece as claimed in any of the preceding claims, c h a r a c t e r i z e d by two legs and in that the angle between the legs is right (90°) . 4. Corner piece as claimed in claim 1 or 2, c h a r a c t e r i z e d by three legs arranged in T-fashion, two legs being aligned with one another while the third leg lying in the bisector plane makes an angle of 90 to each of the first-mentioned legs. 5. Corner piece as claimed in any of the preceding claims, c h a r a c t e r i z e d in that the faste- _ ning means of the corner part (10) comprises a cylind¬ rical connection piece (17) arranged in the corner part at right angles to the first symmetry plane and situa¬ ted in the bisector plane (19) and the axial end of which consists of a supporting edge (20) lying in the first symmetry plane and, on one side of the bisector plane (19), a guide pin (21) projecting above the first symmetry plane and at right angles thereto, while the connection piece (17) has, under the first symmetry plane and on the other side of the bisector plane (19), a downwardly directed recess (23) shaped so as to be complementarly to the upwardly projecting guide pin (21) so that the guide pin (21) of one (17) of the interfacing connection pieces (17, 17') will engage the recess (23*) of the other connection piece (17') and vice versa (21' - 23) when two interfacing corner parts (10, 10') are joined together to form a corner piece. 6. Corner piece as claimed in claim 5, c h a ¬ r a c t e r i z e d in that the fastening means have boundary surfaces (20, 25'; 20', 25) lying in the first symmetry plane and adapted to bear against each other when two corner parts (10, 10') have been joined to¬ gether to form a corner piece. 7. Corner piece as claimed in any of the preceding claims, c h a r a c t e r i z e d in that the in- terengaging fastening means of the corner parts (10, 10') are glued together. 8. Corner piece as claimed in any of the preceding claims, c h a r a c t e r i z e d in that the shanks (11, 12) have inside their outer part (14) a narrower section (15) so that a play is obtained in this section between the shanks and the profile enclosing the shanks. 9. Corner piece as claimed in claim 5, c h a ¬ r a c t e r i z e d in that the guide pin (21) has side faces (22) lying in the bisector plane.

Inventors: JOHANSSON GERT ARNE, JOHANSSON, GERT, ARNE
Applicants: JOHANSSON GERT A, JOHANSSON, GERT, ARNE
Application year: 1984
Main classification: F16B7
IPC codes: A47G1, B29C65, E06B3, F16B7, F16B12