CONNECTION BETWEEN TWO ELEMENTS

Abstract: A connection between two elements (10, 11) in furniture or the like. A straight rod (15) extends with the two end portions thereof into a bore in one element and the other, respectively. It is locked, by means of a cross-pin (24) in a transverse bore (18) in one element (10) against withdrawal from this element, and it is locked, by means of a cross-rod (20) which has a considerably greater length than the cross-dimension of the straight rod (15) and is received in a transverse bore (19) in the other element (11), against withdrawal from this element. The cross-rod forms one arm of a rigid angle fitting the other arm of which is formed by the part of the straight rod, extending into said one element (10). The cross-pin (24) is constructed as an eccentric, rendering possible tightening of the elements (10, 11) against one another by means of the straight rod (15).

Description: CONNECTION BETWEEN TWO ELEMENTS The invention relates to a connection between two elements, preferably elements of wood in furniture or the l ike, comprising a straight rod the two end portions of which extend into a bore in one element and the other, respect vely, and which is locked, by means of a cross- -pin in a transverse bore n one element, against with¬ drawal from this element and is locked, by means of a cross-rod in a transverse bore in the other element, against withdrawal from this element. Various types of furniture fitting have been pro¬ posed in an effect to provide connections of this kind in a manner which permits rational manufacture of furni- ture ^ in a factory or which renders it possible for the amateur to assemble easily a piece of furniture which has been del ivered as a mounting set. To provide a firm and play-free connection between the elements, these fittings are usually based on the fact that the necess- ary stability is obtained by the elements being tightened against one another at suitable engagement surfaces, and they often also presuppose that the elements are provided with guide pins and guide holes, respectively, in order to fit together in the correct manner. Connections which are based on assembly of the elements, require readjust¬ ment, however, on changes in temperature and climate, if they are to retain their stability, which is of course a disadvantage when it is a question of furniture in pub¬ l ic places and garden furniture. In order to be able to be fitted discreetly in the furniture without disturbing the appearance thereof, the prior art fittings also are often of a construction which means that the fitting is expensive to manufacture. With the object of prov ding a f m and reliable connection of the kind referred to above, which comprises a particularly simple and easily manufactured and there¬ fore cheap fitting and moreover permits readjustment after the fitting is well and truly in place, such a connection according to the invention has obtained the characteristics appearing from claim 1. Such a connection provides the following advantages over known connections of a similar type: 1. The mounting can easily be carried out by an amateur without using special tools. 2. The fitting included .in the connection replaces glue and a centre pin in all furniture manufacture in the industry, which involves great advantages in storage and provides flexibility as far as manufacturing combina¬ tions and assembly in different dimensions are concerned. 3. The major part of the fitting is hidden in the connection; only end surfaces thereof are visible in a concealed place and moreover can easily be hidden by a suitable member. 4. The fitting consists of simple parts and can therefore be manufactured at a particularly low cost, estimated at only a quarter of the cost of the most simi¬ lar fittings, and the working operations which have to be carried out on the elements to mount the fitting are of the simplest kind imaginable: only the drilling of a few holes is necessary. In order to illustrate the invention this will be described in more detail below with reference to the accompanying drawing in which FIG 1 is a side view of a connection according to the invention with the two elements which are secured together by means of the connection shown in section, FIG 2 is a sect onal view of the connection, taken along l ine 11 - 11 in FIG 1 , FIG 3 is a view corresponding to FIG 2 in a modified embodiment of the connection, FIG 4 is a cross-sectional view taken along line IV- IV in FIG 3, FIG 5 is a side view of an eccentric pin included in the connection, and FIG 6 is an end view of the eccentric pin of FIG 5, seen from the left in the last-mentioned figure. FIG 1 shows two elements 10 and 11 which are con¬ nected to one another by a connection according to the invention and may consist, for example, of a pair of wooden or wood-fibre parts of a piece of furniture. The element 10 has an edge surface which bears against a side surface on the element 11 in a butt joint 12. From the edge surface, a blind hole 13 is drilled perpendicu¬ larly into the element 10, and a blind hole 14 with a corresponding diameter is drilled into the element 11 from the side surface. The ' holes 13 and 14 are located in the respective elements such that the elements have the desired mutual posit on when the openings of the holes are in register and the holes l ie substantially coaxially in l ine, and inserted therein is a rod 15, which may have a circular cross-section and may be cy¬ lindrical , as shown here (see also FIG 2), but which may also have any other cross-sectional shape and can be constructed, for example, as shown in FIGS 3 and 4, according to which the rod, designated 15' in FIGS 3 and 4, has a substantially rectangular cross-sectional shape the longitudinal edges being rounded. Adjacent one end, the rod 15 has a through cyl indrical bore 16 which extends perpendicularly through the rod, and ad- jacent the other end a through tapped bore 17 which also extends perpendicularly through the rod. Drilled in the element 10 is a bl ind hole 18 which extends perpendicularly to the bore 13 receiving the rod 15 in this element, and in a corresponding manner a bl ind hole 19 is drilled in the element 11 perpendicularly to the blind hole 14 which receives the rod 15, the bores 16 and 17 in the rod 15 being disposed coaxially with the respective transverse blind holes 18 and 19. A rod 20 is introduced into the blind hole 19 and is screwed, with a threaded portion at one end, into the tapped bore 17 in the rod 15, while the rod 20 can have a screw-driver slit in the other end. Instead of the screw connection between the rods 15 and 20, the bore 17 may be a smooth cylindrical bore and the rod 20 can have an easy slide fit in the bore 17, while, on the other hand, it has a drive fit, preferably an easy drive fit, in the blind hole 19 in the element 11 to be held in the posi¬ tion shown by frictional grip. The length of the rod 20 is several times the cross-dimension (diameter) of the rod 15. In the rod 20 there is a through tapped bore 21 which is located coaxially with a blind hole 22 in the element 11 , and a screw pin 23, which is received in the blind hole 22, is screwed into the bore 21. This screw pin 23 can be dispensed with, however, and it can also be replaced by a smooth pin which is held in position by a drive fit in the bore 21 , which in this case is smooth and cylindrical , or in the blind hole 22. The pin can be constructed as an eccentric p n. Introduced into the blind hole 18 in the element 10 is a pin 24 in the form of an eccentric pin of the con¬ struction seen in FIGS 5 and 6. This eccentric pin has a cylindrical shank 25 and a cylindrical head 26 with a screw-driver slit 27, which is disposed eccentrically in relation to the shank. Extending over approximately half the periphery of the head 26 is a projecting sharp- -edged chaser 28. The shank 25 is received for rotation in the cylindrical bore 16 in the rod 15, and the shank is introduced into the bore with the thicker portion of the head 26 to the right as seen in FIG 1. By turning the eccentric pin 24 in clockwise direction, arrow 29 in OMPI FIG 2, axial displacement of the rod 15 can then be effected towards the right as seen in FIG 1 , and as will easily be realized this means that the two elements 10 and 11 are pressed against one another in the butt joint 5 12. The chaser 28 cuts into the boundary wall of the bl ind hole 18 and so contributes to holding the eccentric pin 24 in position in the element 10. The rods 15 and 20 with the pins 23 and 24 form and angle fitting which is received as a whole in the two 10 elements 10 and 11 connected thereby, and is almost com¬ pletely hidden in these. All that is seen of the fitting is the end surfaces of the rod 20 and the pins 23 and 24, which can easily be caused to melt into the rest of the furniture in an aesthetically pleasing manner, particu- 15 larly if these parts are made of brass or are brown- nodized. If the rod 15' is disposed in the elements 10 and 11 , two rods 20 and two eccentric pins 24 can be arranged in the manner shown in FIG 3. 20 It is clear that the fitting is of the simplest imaginable construction and that the mounting of the fitting can be effected in the simplest manner. After the holes have been drilled in the elements 10 and 11 , the rods 15 and 20 for ing the angle fitting can be 25 placed in position joining the elements 10 and 11 , after which the location of the fitting is effected by means of the pins 23 and 24 and any tightening of the elements 10 and 11 against one another which may be necessary is brought about by turning the eccentric pin 24. 30 The connection according to the invention is well suited for furniture of different kinds, including kit¬ c en fixtu r es, wardrobes and garden furniture, as well = s : ' .leasehold components wh ch can be assembled, tube co st tions for exhibitions and shop fixtures, sports Z Z s '. 3. r, _ s _ ". 2 e l ike. BAD ORIGINAL In the embodiment shown, the cross-rod 20 is screwed into the rod 15; instead, the rod 15 can be screwed or inserted into a cross-bore in the cross-rod 20. If the pin 23 is an eccent ic pin, t can be constructed as shown in FIGS 5 and 6.

Claims: CLAIMS 1. A connection between two elements (10, 11) in furniture or the like, comprising a straight rod (15) the two end portions of which extend into a bore in one element and the other, respectively, and which is locked, by means of a cross-pin (24) in a transverse bore (18) in one element (10) against withdrawal from this element and is locked, by means of a cross-rod (20) in a trans¬ verse bore (19) in the other element (11), against with- drawal from this element, c h a r a c t e r i z e d in that the cross-rod (20) in the other element has a con¬ siderably greater length than the cross-dimension of the straight rod (15) so as to form one arm of a rigid angle fitting, the other arm of which is formed by the part of the straight rod extending into said one element (10), and that the cross-pin (24) is constructed as an eccentric, rendering possible the tightening of the elements (10, 11) against one another by means of the straight rod (15). 2. A connection as claimed in claim 1, c h a r a c - t e r i z e d in that the cross-rod (20) has a screw engagement with the straight rod (15).

Inventors: STOCKUM B
Applicants: STOCKUM B, STOCKUM DESIGN AB
Application year: 1979
Main classification: F16B12
IPC codes: F16B12