DE3734104A1 - Bar connection and furniture constructed therewith - Google Patents

Abstract

The bar connection serves for cross-sectionally equal-legged right-angled bars, the ends of which, in order to form joining surfaces (46), are cut off at angles of 45@ with respect to the bar axis and which are connected, via connecting elements (40), to identical, congruent triangular surfaces. The bars, in the form of triangular prisms, can also be connected, by means of their joining surfaces (46), such that they rest on the cathetus surfaces (36) or hypotenuse surfaces (37) of neighbouring bars. In this manner, furniture frameworks, for example a chair framework having a casing (84) and legs (82.1; 83.1; 83.2), can be formed. <IMAGE>

Description

The invention relates to rod connections with at least two to be connected bars for all types of bars and before especially for furniture and furniture with it.  

There are a wide variety of rod connections for those various purposes, in particular for all rod structures Type, for the creation of frames, structures, separation devices, Holding devices, switching and control devices, Exhibition stands, show stands and above all Furniture, in particular shelves, carcass support elements, tables and seating, such as chairs, stools, benches, armchairs and the like

For all these purposes, the rod connection is also according to the Invention suitable and determined.

With most rod connections you have the goal set to design the rod connections so that the Member axes are in one point in the node areas to cut.

Knot elements are known especially for pipe connections, that of the respective number of those to be connected Corresponding rods at suitable angles of one Node center projecting pegs that have the profile shape of the respective holding area of the rods, which put on or in it. Such rod connection systems are already according to DE-OS 23 34 149, DE-OS 28 38 664 and DE-GM 76 08 821 and many usage variants are known. Many other screw connections, jamming and Plug elements and assemblies by gluing according to the respective profiles are also used.  

Among them, it is also known to use rods that the Cross-section of an isosceles, right-angled Have triangles so that there are two angles of 45 ° and one Result in an angle of 90 °.

However, it has now been shown that the previously known Rod connections only relatively few connection options allow or diverse in the connection areas need special fasteners, depending on how how many rods you connect with each other would like to. There are many, especially for furniture and chairs known compounds not suitable, especially not to in a simple and interesting way Form stacking chairs.

The invention is based, rod connections and thus formed furniture and the like. To design so that at same bar profile through direct connection and / or Interposition of simple connecting elements greatest possible variety of rod connections can be achieved can.

The patent covers a group of inventions that are connected to each other in such a way that they are a realize only general inventive idea that consists mainly of profile angles for rod connections and cutting angle to use the one enable orthogonal rod connection system, which the  Connection of only a few or very many bars in allows multiple spatial directions in a node area, the bar axes of three bars are usually different do not cut and also when connecting two rods cutting the rod axes is often omitted, which is an extraordinarily large, so far not known variety of rod connections results in the preferably chosen design with angles of 45 ° and 90 ° with direct connection and / or the intermediate joining of fasteners to which the same or Supplementary angles, in particular 45 ° and 90 °, like general tetrahedron with unequal sides Triangles as four-flat, octahedron and / or pyramid with corresponding areas, with normal on the areas standing spatial axes, which are under the angles of the system, in particular at 90 ° and / or 45 ° to one another, comes about.

The invention can accordingly be embodied in several ways as follows To be defined.

The main idea of the invention is through a simple triangular profile and a sensible cut direct to form the section pads Connections of bars to each other as well as indirect connections with the help of fasteners that by appropriate location of their pads or on  their surfaces are perpendicular to each other Allow connection in the respective spatial directions. If one waive universal connection possibility or want to prefer special spatial directions, you can from Angle pair deviate 45 ° / 90 °. However, according to the particularly preferred embodiment an orthogonal Rod connection system with diverse Realize connection options of the rods to each other, see above is used both for the cross section of the bar and for the relative position of the section pads to the Rod axes form the angles 45 ° and 90 ° and form the Fasteners. These then result in one general tetrahedron, of whose faces two pairs under are at right angles to each other, that is from four isosceles, but in deviation from the usual, regular, platonic tetrahedra of unequal sides Triangles are limited, but congruent with each other Have surfaces that also match the section pads are congruent and in their angles and Sides the lengths of the edges of the end portions of the Catheter surfaces and the hypotenuse surface of the rods correspond, so that they are also inclined accordingly cut termination can be connected directly. However, since the section pads are at their angles to the rod axis and thus to the hypotenuse surface under 45 ° run, you can also on the section pads anywhere on the catheter surfaces of the neighboring Connect rods without protrusion. If it is the constructive structure makes sense, one can  Place the hypotenuse surfaces directly on top of each other, if necessary under Mediation of a parallel area joining element or a joining material formation in the form of a Joining hardening material material, which however, the angular compliance is guaranteed, for example one in depressions, bores or the like. extending plastic, the sufficient after curing Adhesion and sufficient shear strength as well Has tensile, compressive and flexural strength.

The connecting element with the aforementioned angles can two elements put together and then results in one not with a special designation in geometry occupied body with congruent pads, however are intended only for connection in a suitable position and which is two surfaces lying side by side in one plane having. It is a mirror symmetric Body.

You can also use two 45 ° / 90 ° tetrahedra with their tips facing each other swept onto a hypotenuse surface or onto a Place the catheter surface and then add further rods accordingly connect.

However, you can also put four tetrahedra together run in one piece so that an octahedron forms has the corresponding pads. It is also enough  for many connections if you only have one pyramid with four provides pads formed according to the system and dimensioned the base so that its edge of width corresponds to the hypotenuse area.

The various aspects of the invention can also be as follows in different combinations of features define that here in the variety of definitions primarily for the purpose of meaningful research for a Late registration and listed for full disclosure are.

A first definition of the invention describes a Rod connection for rod connections of system furniture with at least two rods to be connected with the following features:

• - The bars all have the same cross section or are composed of bars of the same cross-section;
• - The cross section of the bars is a isosceles right triangle;
• - The bars have a hypotenuse surface and two catheter surfaces;
• - The end section connection surfaces are through cuts made at 45 ° to the rod axis;  
• - The section connection surfaces of the rods are on Catheter surfaces and / or hypotenuse surfaces of the adjacent rods and / or on connecting elements connected;
• - The connecting elements are with as multi-surface Pads formed;
• - The pads of the multi-surface are isosceles triangles the size of below 45 ° section connecting surfaces lying to the rod axis;
• - If necessary, there are further bars under a flat direct contact of two hypotenuse surfaces of adjacent bars connected - possibly with the interposition of Lanyards;
• - If necessary, the multi-surface have a square Base with a side length that is the width of the Hypotenuse area is the same (Pyramid with hypotenuse as base edge).

Another meaningful definition of essential to the invention Features describes a Rod connection for triangular prism shaped rods, with isosceles rectangular cross-section, in particular made of wood for furniture racks or the like, at the at least partially cut obliquely End faces at least on individual connections multi-part frame or the like with the help of suitable  shaped, which mediates the stable connection Node and / or intermediate connecting elements are connected to each other is characterized in that the connecting elements are multifaceted, the preferably by cutting the same Bar profile at an angle of 45 ° to the longitudinal axis are formed.

Another advantageous definition of the invention Features describes a Rod connection for triangular prism shaped rods, with an isosceles right-angled cross-section, especially for frames and / or frames of furniture, Equipment and space partitioning racks at end faces cut off at least partially at an angle and / or side faces, at least on some Connections of a multi-part frame with the help of suitably shaped, the stable connection mediating connecting elements with each other are connected and wherein the connecting elements Have pads that are one below the other Include solid angles of 45 ° or 90 °, and where between rod surfaces touching only along lines and / or rod edges of different rods connecting elements (Tetrahedron, octahedron, pyramid) are, their surfaces or their normal solid angle of Include 90 ° or 45 °.  

Another definition of advantageous features of the invention describes one Rod connection for triangular prism shaped rods, with an isosceles right-angled cross-section, especially for frames and / or frames of furniture, Equipment and space partitioning racks at end faces cut off at least partially at an angle and / or side faces, at least on some Connections of a multi-part frame with the help of suitably shaped, the stable connection mediating connecting elements with each other are connected and wherein the connecting elements Have pads that are one below the other Include solid angle of a 90 ° / 45 ° system.

With the rod connection according to at least one of the previous explanations can be provided appropriately, that the edges and / or corners are rounded with curves or broken.

You can also provide for the rod connections that between the pads dowels and / or other connecting elements and / or spacers are arranged.  

A particularly advantageous application of the basic principle the invention and its design provides a Chair, stool, bench or the like with up to about Height of the seat-reaching front legs, horizontal Cross and longitudinal connections and the like Short-hind legs or continuous ones Back-supporting long-hind legs, being after one of the above definitions Corner connections of straight bar elements under Intermediate insertion of a connecting element are designed such that the hypotenuse surfaces the one next to or at least partially under the seats horizontal side frames on the sides stand vertically and point outwards and that the Catheter surfaces of the legs also on the outside are arranged such that between each Catheter surface of the legs and the outer end of the lateral, horizontal lying, the chair frame forming rods each have at least one connecting element is arranged.  

Other important features of the invention are: Chair, stool, bench or the like with up to about Height of the seat-reaching front legs, horizontal Cross and longitudinal connections and the like Short-hind legs or continuous ones Back-supporting long-hind legs, being after one of the above definitions Corner connections of straight bar elements under Intermediate insertion of a connecting element are trained that the frame-like assembled chair frame with the perpendicular hypotenuse surfaces outside side frames and with the horizontal ones pointing upwards Hypotenuse surfaces arranged front and Rear frame bars is formed and the front and rear frame bars directly with under Cut 45 ° to the bar axis Section pads at the bottom Catheter surfaces of the side frame bars attached are and the legs with outward-facing hypotenuse surfaces and with the ridge lines on the hypotenuse surfaces of the Side frame bars touching or passing with Help of fasteners on the Side frame bars are attached.  

Embodiments of the invention are as follows explained using the drawings.

It shows

Figure 1 is an oblique view of a connecting element and a rod with its cross-sectional area.

Figure 2 is a side view of a roof surface formed by two connecting surfaces of a connecting element which is designed as a 45/90 ° four-surface.

. Fig. 3 is opposite to Fig 2 rotated by 90 ° side view of a connecting element;

Fig. 4-8 side views of bars with different miter cuts, which explain the possibilities for straight sections and inclined connection surfaces, the cross-sectional area is shown on the inside to illustrate the relative position;

Fig. 9 is a view corresponding to Figure 1 of a connecting element in the form of a Achtflächners with the associated rod.

Fig. 10 is an illustration of a connecting element in the form of a pyramid;

FIG. 11 is an exploded view of a connecting element with its normal to the joining surfaces standing spatial axes and the withdrawn joining surfaces shown for the illustration of which may be spatial directions rods connected;

FIG. 12 shows a reduced representation corresponding to FIG. 11 with possibilities of assigned rods;

FIG. 13 shows a representation corresponding to FIG. 12 of an eight-area surface with assigned rods;

Fig. 14 is a representation corresponding to Figure 12 with a different position of the connecting element and on the other array of rods as well as zwischenzufügenden anchors with connecting means.

Figure 15 is a side view of the connection of two with the hypotenuse facing each other lying beams and a fixed with the interposition of spacer discs to the sharp cut-off pads connecting element.

Fig. 16 is a side view of the connection of three bars with interposed spacer discs;

Figure 17 is a perspective view of a chair rack, the rods and the connection elements are drawn out explosively the front right and the rear right corner between the frame and legs to illustrate their position.

FIG. 18 is the chair frame of Figure 17 in a front view.

Fig. 19 the chair frame in rear view;

FIG. 20 is the left side view of the chair rack;

FIG. 21 is a right side view of the chair rack;

FIG. 22 is a plan view of the chair frame;

Fig. 23 is a bottom view of the chair rack;

FIG. 24 is the schematic side view of a plurality of stacked chairs;

Figure 25 is a perspective view of a chair with seat and backrest with use of the chair rack shown in the preceding figure.

FIG. 26 shows a further oblique view of the chair according to FIG. 25;

Fig. 27 is a front view of the padded chair;

Fig. 28 is the right side view of the chair and

Fig. 29 is a bottom view of the chair of Fig. 25 to 28.

Fig. 1 shows the two essential elements of the bar linkage, namely the rod 30 and the connection member 40.

The rod 30 has as cross-sectional area 31 an isosceles, right-angled triangle 32 with two acute inner angles 33 of 45 ° and a right angle as a ridge angle 34 , which lies on the ridge line 35 of the rod profile. The rod 30 has two identical catheter surfaces 36.1 and 36.2 and a hypotenuse surface 37 . The rod can be made of solid wood, metal, plastic or wood / metal / plastic combinations.

Fig. 1 illustrates an oblique view of connection member 40 and associated rod 30, with the cut pad is marked 45 with its three lying in its surface interior angles of 70 ° and 55 ° outboard again for clarity.

The surface 45 is common to all parts. An essential basis of the invention is based on the congruence of identical surfaces 41 to 46 with these angles and edge lengths.

The connecting element 40 is designed as a four-surface. It is a general tetrahedron, but not a platonic body because it does not have equilateral triangles as boundary surfaces. It is formed in such a way that two pairs of adjacent surfaces adjoining one another with their hypotenuses form right angles with one another, but with the remaining surfaces enclose angles which correspond to the congruence of all triangular surfaces. Accordingly, two of the standards N 1 to N 4 (see FIG. 11) on the connection surfaces 41 to 44 are at right angles to one another in space. The two levels determined from this are at an angle of 45 ° to one another.

The connecting element 40 shown here is formed by cutting a 90 ° / 45 ° profile bar 30 at 45 ° to its axis, namely in accordance with two cuts at an angle of 90 °, that is, in opposite directions at 45 ° to the bar axis. Pages of equal length fall together.

The tetrahedron 40 is thus limited / all their edges coincide and wherein amount of congruent isosceles triangular faces 45 41 to 44, the angle between colliding at the hypotenuse surfaces 90 °.

The same surface 45 is obtained if a rod 30 is cut off at its end, as illustrated in FIGS. 4 to 8, at an angle of 45 ° to the longitudinal axis of the rod. In this case, it is possible according to Fig. 4 shows a hip roof-shaped flat or miter cut according to Fig. 5 create an acute miter cut, so that the terminal surface 46 obliquely across the hypotenuse 37 projects outwards. FIGS. 4 and 5 illustrate that the 30 straight may be an end 48 of the rod. FIGS. 6 and 7 illustrate that both ends of the rod can be cut at an angle 30, in parallel, so that an acute-lying and flat-lying pad 46 yield of FIG. 6, or in opposite directions such that two flat-lying pads 46 result shown in FIG. 7 or in opposite directions, that two opposite pointed pads 46 result in FIG. 8.

Since the height H of the connecting surfaces 41 to 46 of the catheter length KL is the same ( FIGS. 1 and 3), connections with the same connecting surfaces 41 to can be made on the catheter surfaces 36.1 and 36.2 of the rods 30 both in the end region and at any point over the entire length 46 can be made without one part protruding over the other. So you are not bound to make the connections only in the end area and only on end faces and / or only with connecting elements, but can vary the position of the connection surfaces in many ways and still achieve an orthogonal rod system, although the rod axes only intersect in a few cases . You can also connect rods 30 to hypotenuse surfaces at angles of 45 °.

When using the connecting elements 40 or the other connecting elements dealt with below, the rod axes can also be guided past one another in the system's own particular way, which in particular significantly increases and improves the special features and design options both in terms of construction, as well as in terms of appearance, feel and aesthetics.

Instead of a connecting element 40 in the form of a four-surface unit, an eight-surface unit 50 can also be used, as shown in FIG. 9, the eight connecting surfaces 45 of which have the same size and the same angle as in the four-surface unit 40 , with exactly the same length as the four-surface unit 40 .

A pyramid 60 according to FIG. 10 can also be used instead of an eight-surface plane 50 . This then has a base surface 69 with an edge length which corresponds to the hypotenuse length HL of the rod 30 , so that a hypotenuse surface 37 of rods 30 in two mutually perpendicular positions can be connected to this base surface 69 in a suitable manner. This further increases the variety of connection options for bars.

One is not limited to providing only obliquely cut-off pads for direct connection or connection using connecting elements 40, 50 or 60 . It is also possible to connect rods running through very well in an appealing manner on the front with the involvement of pyramids. The pyramids 60 are also particularly well suited for stiffening corners, in which pyramids 60 are arranged between the ridge line 35 of one bar 30 and the hypotenuse surface 37 of the other bar 30 .

Fig. 11 shows in a perspective exploded view of a connection member 40, wherein here indicated in the focal points of the pads 41 to 44 pin holes 71, in order to label them better. The possible connection surfaces for further connecting elements or rods to be connected are indicated on the outside and designated 45 '.

Fig. 12 illustrates a somewhat smaller representation than Fig. 10, but with the individual connection surfaces 45 rods 30.1 to 30.4 are assigned, which explain the various connection options, namely 30.1 with a pointed miter cut, 30.2 with a blunt miter cut, 30.3 with one in the end region 72 a pointedly cut off catheter surface 36 formed connecting surface 46 '' and 30.4 in the end region 73 of a bluntly cut off catheter surface 36 formed connecting surface 46 ''.

FIG. 13 shows how a octahedron 50 on all pads rods 30.1 can be, for example, connected to 30.8.

Naturally, all pads 41 to 46 do not always have to be occupied. The connecting elements 30, 40, 50, 60 also make a good contribution to an interesting design, especially since they are used from different materials compared to the bars or at least in different colors and / or can be used to connect various other components and usage elements.

The connection to the connecting surfaces 41 to 46 serving as joining surfaces can be realized in various conventional ways, for example with glued-in pegs, by surface bonding with high-quality adhesives, but also by special plastic connection methods and / or special dowels used.

FIG. 14 illustrates an example of this, and that anchors 75 are provided for the three pads that a focus lying in the pin with a plurality of peaks 75.1 and 75.2 are formed on each side of planar flat parts. Such components can be prefabricated, or one can incorporate recesses 41 to 46 into the connecting surfaces and insert a suitable material during the production of the rod connection, which material fills the spaces and recesses. The visible pins 75.2 can also be used separately for centering.

The interposition of washers between the pads is for many purposes on the one hand to improve the connection, on the other hand to achieve special design conditions sensible, especially if you Wants to create stacking chairs or the like appropriate game, or if you have corpuses in Want to mount racks and the like  

The Figs. 15 and 16 illustrate side views of node areas where interposed discs 76 are visible. It can also be seen here that the edges of the connecting elements and the rod edges and the end edges are appropriately rounded off with curves 77 . They can also be chamfered. This not only results in special design effects, but also reduces the risk of breakouts and injuries. It is also possible to work without the accumulation of surface treatment agents, such as paints or coatings, while avoiding peak effects.

FIG. 15 illustrates the side view of two rods 30 , which face each other with the hypotenuse surfaces 37 and are at a short distance from one another, between whose upper, pointedly cut-off connecting surfaces 46 , a connecting element 40 designed as a four-surface insert is inserted with the interposition of the washers 76 . It can be connected there in an interesting way, and a stable support with the double profiles is made possible.

FIG. 16 illustrates the view of three rods 30.1, 30.2 and 30.3 , the rod 30.3 being shown in a view of an end face or end connection face. They are all connected to one another without connecting elements, namely the two pointedly cut-off connecting surfaces 46 of the two rods 30.1 and 30.2 are directly connected to one another with the interposition of the disk 76 .

Under their hypotenuse surfaces 37 , with the interposition of disks 76, a third transverse rod 30.3 with its catheter surfaces 36 is directly connected. Similar connections can be designed in a variety of ways.

FIG. 17ff. illustrate an advantageous way of applying the invention to a stacking chair 80 . Only the chair frame is drawn from this.

This chair frame 81 has front legs 82.1 and 82.2 , continuous rear legs 83.1 and 83.2 and a frame frame 84 joined together like a frame, all of which are formed from rectangular isosceles profile bars of the same size and which in the corners 85.1 to 85.4 are partly directly connected to each other at the Ends of the lower catheter surfaces 36 lying connecting surfaces 46 '' or with the interposition of one connecting element 40 in the form of a four-surface connection.

The front frame bar 84.1 and the rear frame bar 84.2 are installed in such a way that the hypotenuse surfaces 37 are horizontal as support surfaces for the seat 86 and point upwards, while the ridge lines 35 of these frame bars 84.1 and 84.2 point downward. The two side frame bars 84.3 and 84.4, however, are installed with the hypotenuse 37 facing outwards, in such a way that the ends of its lower leg surfaces, the connecting surfaces 46 '' for each directly connected, sharp cut-off pads 46 on respective opposite ends of the front Form the frame bar 84.1 and the rear frame bar 84.2 . In this way a stable chair frame 84 is created without the intermediary of connecting elements.

In itself, one could connect the legs 82 lying flat on the vertically standing, outwardly facing hypotenuse surfaces 37 of the side frame bars 84.3 and 84.4 . However, this advantageous exemplary embodiment now goes a different, interesting and particularly impressive way, designed specifically for stacking, in that the legs 82 are connected with the inwardly pointing ridge lines 35 and outwardly pointing hypotenuse surfaces 37 . This results in a particularly slim and appealing chair frame 81 . You can easily create the necessary stacking game without affecting the appealing design.

In order to make this connection possible, connecting elements 40 in the form of four-faced members are connected to the side frame bars 84.3 and 84.4 , which are cut off at the front, so that they lie in front in the corner and hold the front legs 82.1 and 82.2 cut off with the surface 46 and thereby underlining the special design impression of the stacking chair 80 .

The rear ends of the side frame bars 84.3 and 84.4 are cut pointed forming at angles of 45 ° -Anschlußflächen 46 and wear as connecting elements 40 tetrahedron which are each secured outwardly extending pads 46 on the corresponding leg surface 36 of the continuous hind legs 83.1 and 83.2.

The rear legs 83.1 and 83.2 are cut off at the upper ends and carry connecting elements 40 in the form of quadrilaterals projecting inwards on the catheter surfaces 36 pointing obliquely to the rear of the chair. A backrest can be fastened to these and possibly other rods of the chair frame in a design-interesting manner, as shown in FIGS. 25 to 29.

A backrest 88 matching the design of the rod connection in design is, however, somewhat curved in the face area as a square and is only attached to the connecting elements 40 of the upper ends of the rear legs 83.1 and 83.2 at opposite corners 89.1 and 89.2 .

The appropriately shaped seat 86 lies, for example, as a separately manufactured seat on the front frame bar 84.1 and the rear frame bar 84.2 and projects beyond them in the manner shown in the drawings.

At the bottom, all legs are cut off normal to the rod axis.  

The rod connection is for a wide variety of materials and combinations of materials. It is special intended for a solid wood range that is universal entire area of application of a chair with table, from the multi-purpose chair over the stacking chair to the conference chair covers and all associated furniture such as closets, Cloakroom elements up to the flower box covers. Here a triangular profile is chosen for the construction of the system, which for both the chair family and for the tables all the way to the cabinet furniture range can be. The triangular profile (90 ° / 45 ° / 45 °) can be through two different ones, guided at 45 ° to the rod axis Miter cuts (pointed and blunt) and the smallest possible basic element as a connecting element, the Quadrilateral or tetrahedron, connect infinitely diverse and combine.

The combination of the bars with the miter cuts on Triangular profile with each other and with the connecting elements as a tetrahedron, octahedron or pyramid a construction node that connects every conceivable connection point allowed to solve.  

Above all, the quadrilateral / tetrahedron additionally allows turning and turning the bar profile, thus one Change of direction and side. With that, the Possible combinations with the same connecting surface constructively multiplied. The strength of the Connection system lies in the details in both constructive as well as more technical, aesthetic, optical and haptically.

The triangular profile works with the best static utilization the cross-section is delicate and elegant. Sizing and Change strength depending on the view by using the 90 ° / 45 ° profiles. The profile can be constructed double into a large triangle or one square cross section. The interplay of views depending on the point of view and turning the profile results in a lively design.

So z. B. the frame of a triple bank of a highly padded Reception group with a constant triangular profile be doubled. The connection point can be a pliers construction with double Same attack surface.

The diversity of the rod connection system allows one uniform interior design. The different detailed solutions are characterized by the crystalline character of the spatial geometry optically linked.  

The triangular prism bars can also be used for a cabinet furniture program be used when all four sides of the Profiles should be the same in the view. There is Connection options in six directions. The doubling the profile is possible in four directions.

Due to the simplicity of the elements and the cut result in amazingly diverse, simple and safe Bars to be manufactured.

The summary printed below is an integral part the disclosure of the invention:

The rod connection is used for isosceles-right-angled rods in cross section, the ends of which are cut off to form connecting surfaces ( 46 ) at angles of 45 ° to the rod axis and which are connected by connecting elements ( 40 ) to the same congruent triangular surfaces. The triangular prism-shaped rods with their connecting surfaces ( 46 ) can also be connected to lie on the catheter surfaces ( 36 ) or hypotenuse surfaces ( 37 ) of adjacent rods. In this way, furniture frames, such as a chair frame with a frame ( 84 ) and legs ( 82.1; 83.1; 83.2 ) can be formed.

Reference symbol list:

30 bar / profile bar
30.1 Bar / profile bar
30.2 Bar / profile bar
30.3 Bar / profile bar
30.4 Bar / profile bar
30.5 rod / profile rod
30.6 Bar / profile bar
30.7 Bar / profile bar
30.8 rod / profile rod
31 cross-sectional area
32 triangle
33 interior angles
34 ridge angle
35 ridge line
36 catheter surface
36.1 Cathet surface
36.2 Catheter area
37 hypotenuse surface
40 connecting element / four-surface
41 pad
42 pad
43 pad
44 pad
45 pad
45 ′ ′ ′ symbol
46 pad
46 '' connecting surface / connecting surface on the catheter surface
48 end of 30
50 connecting element / octagon
60 connecting element / pyramid
69 footprint of 60
71 mortise
72 end of 36
73 end of 36
75 dowels
75.1 top
75.2 cones
76 disc
77 rounding
80 stacking chair
81 chair frame
82 leg
82.1 front leg
82.2 Foreleg
83.1 hind leg
83.2 hind leg
84 chair frame
84.1 Front frame bar
84.2 Rear frame bar
84.3 Side frame bar
84.4 Side frame bar
85.1 corner
85.2 corner
85.3 corner
85.4 corner
86 seat
88 backrest
89.1 corner
89.2 corner
H height
KL catheter length
HL hypotenuse length
N 1 normal
N 2 normals
N 3 normals
N 4 normals

Claims (8)

1. Rod connection for rod connections of system furniture with at least two rods to be connected with the following features:

• - The bars ( 30 ) all have the same cross section ( 31 ) or are composed of bars of the same cross section;
• - The cross section ( 31 ) of the rods ( 30 ) is an isosceles right-angled triangle ( 32 );
• - The rods ( 30 ) have a hypotenuse surface ( 37 ) and two catheter surfaces ( 36.1, 36.2 );
• - Front section connection surfaces ( 46 ) are formed by cuts made at 45 ° to the rod axis;
• - The section connection surfaces ( 46 ) of the rods are connected to catheter surfaces ( 36 ) and / or hypotenuse surfaces ( 37 ) of the adjacent rods and / or to connecting elements ( 40, 50, 60 );
• - The connecting elements ( 40, 50, 60 ) are designed as multi-surface with connection surfaces ( 41 to 46 );
• - The connection surfaces ( 41 to 46 ) of the multi-surface ( 40, 50, 60 ) are isosceles triangles ( 45 ) of the size of the section connection surfaces ( 46 ) lying at 45 ° to the rod axis;
• - If necessary, further rods ( 30 ) are connected under direct direct contact of two hypotenuse surfaces ( 37 ) of adjacent rods ( 30 ) - possibly with the interposition of connecting means ( 75, 76 ');
• - If necessary, the multiple surfaces ( 60 ) have a square base area ( 69 ) with a side length that is equal to the width (HL) of the hypotenuse area (pyramid with hypotenuse as the base edge).

2. Rod connection for triangular prism-shaped rods ( 30 ), with an isosceles right-angled cross-section ( 31; 32 ), in particular made of wood for furniture racks or the like, or at least at individual connections of a multi-part frame or in the at least partially obliquely cut end faces ( 46 ). Like. With the help of suitably shaped, the stable connection mediating node and / or intermediate connection elements are connected to each other, characterized in that the connecting elements ( 40, 50, 60 ) are multi-surface, which preferably by cutting an identical rod profile ( 31, 32 ) are formed at an angle of 45 ° to the longitudinal axis. 3. rod connection for triangular prism-shaped rods ( 30 ), with an isosceles-right-angled cross-section, in particular for frames ( 81 ) and / or frames of furniture ( 80 ), equipment and space partitioning frames, in the at least partially obliquely cut end faces ( 46 ) and / or side surfaces ( 36, 37 ), at least on individual connections of a multi-part frame , are connected to one another with the aid of suitably shaped connecting elements ( 40, 50, 60 ) which mediate the stable connection, and wherein the connecting elements ( 40, 50, 60 ) connecting surfaces ( 41 to 46 ), which include solid angles of 45 ° or 90 ° to each other, and connecting elements (tetrahedra ( 40 ) between rod surfaces ( 37, 36 ) and / or rod edges ( 35 ) of different rods that only touch along lines ( 35 ), Octahedra ( 50 ), pyramid ( 60 )) are provided, whose surfaces or their normals (N 1 to N 4 ) include solid angles of 90 ° or 45 ° with one another. 4. rod connection for triangular prism-shaped rods ( 30 ), with an isosceles right-angled cross-section ( 31, 32 ), in particular for frames ( 81 ) and / or frames of furniture ( 80 ), equipment and partitioning frames, in which at least partially cut obliquely End faces ( 46 ) and / or side surfaces ( 36 ), at least on individual connections of a multi-part frame , are connected to one another with the aid of suitably shaped connecting elements ( 40, 50, 60 ) which provide the stable connection, and the connecting elements connecting surfaces ( 41 to 46 ) have, which include solid angles of a 90 ° / 45 ° system. 5. Rod connection according to at least one of the preceding claims, characterized in that the edges and / or corners are rounded or broken with curves ( 77 ). 6. rod connection according to at least one of the preceding claims, characterized in that between the connecting surfaces ( 41 - 46 ) dowels ( 75 ) and / or other connecting elements and / or spacers ( 76 ) are arranged. 7. Chair ( 80 ), stool, bench or the like. With front legs ( 82.1, 82.2 ) reaching horizontal to the height of the seat ( 86 ) and horizontal transverse and longitudinal connections ( 84 ) and the same short rear legs or continuous long rear legs ( 83.1, 83.2 ) carrying the backrest ( 88 ), wherein according to one of claims 1 to 4 corner connections of straight rod elements ( 30 ) are formed with the interposition of a connecting element ( 40, 50, 60 ) in each case, that the hypotenuse surfaces ( 37 ) of the lateral, horizontal side frame bars ( 84.3, 84.4 ) lying next to or at least partially under the seats ( 86 ) are vertical and point outwards, and that the catheter surfaces ( 36.1, 36.2 ) of the legs ( 82 ) are likewise are arranged on the outside in such a way that between each of a catheter surface ( 36.1, 36.2 ) of the legs ( 82 ) and the outer end of the lateral, horizontal, frame ( 84 ) forming frame rods ( 84.3, 84.4 ) each have at least one connection ngselement ( 40 ) is arranged. 8. Chair ( 80 ), stool, bench or the like. With front legs ( 82.1, 82.2 ) reaching horizontal to the height of the seat ( 86 ) and horizontal transverse and longitudinal connections ( 84 ) and the same short rear legs or continuous long rear legs ( 83.1, 83.2 ) carrying the backrest ( 88 ), wherein according to one of claims 1 to 4 corner connections of straight rod elements ( 30 ) are formed with the interposition of a connecting element ( 40, 50, 60 ) in each case, that the frame-like assembled Stuhlzarge (84) from the perpendicular hypotenuse (37) outwardly facing side Zargenstäben (84.3, 84.4) and to the horizontally disposed, upwardly facing hypotenuse (37) arranged in front and rear-Zargenstäben (84.1 , 84.2 ) is formed and the front and rear frame bars ( 84.1, 84.2 ) directly with section connecting faces ( 46 ) cut at 45 ° to the bar axis on the lower catheter surfaces ( 36 ) of the side frame bars ( 8 4.3, 84.4 ) are fixed and the legs ( 82 ) with outward-facing hypotenuse surfaces ( 37 ) and with the ridge lines ( 35 ) on the hypotenuse surfaces ( 37 ) of the side frame bars ( 84.3, 84.4 ) touching or passing by using connecting elements ( 40 ) are attached to the side frame bars ( 84.3, 84.4 ).