HRP970223A2 - Fastening device for two rod-shaped profile members - Google Patents

Description

The invention relates to the construction of a joint with at least two rod profiles according to the features listed in the introductory part of patent claim 1.

From the German patent document DE 31 52 347 Tl according to the international patent application WO 82/01054, such a joint construction is known, which can be used for a skeleton or the like and which contains rod profiles made as tubular supports, and connecting elements in the form of retaining clamps. This profile has a basically square section with four longitudinal grooves or cavities that extend along the entire length, always in the area of the corners of the profile. Between the two longitudinal grooves there is a segment, the walls of which go wedge-shaped towards the middle of the rod profile and thus, seen from the outer surface of the rod profile, they are built with a rear grip. Both retaining clips of the connecting element comprise the segment and protrude with their front ends into both mentioned longitudinal grooves, whereby the ends of the retaining clips with their adjacent surfaces also face the center of the profile. The other ends of the retaining clips protrude into the inner empty space of the next profile, which is arranged vertically to the first profile and is connected to it. The retaining clips have a complex structure, and with the help of a screw connection, the mentioned segment of the first profile is connected on the one hand, and on the other hand, the ends that protrude into the next profile are tightened so that they rest against the inner surface of the next profile when stressed. The manufacture of individual components and the construction of the joint requires imperceptible costs, and handling during assembly and making the joint between the profiles proved to be difficult and time-consuming. The rod profile must be unconditionally made as a hollow profile, and making profile joints without further ado is not feasible at an angle that deviates from the right angle.

From US patent 3 597 858, a building block with pre-made elements for setting up maximally finished buildings in raster scale is known. The elements contain plates on the edges of which are arranged profile segments with a mostly cylindrical outer surface. Furthermore, there are connecting elements made in accordance with the profile segments of the panels and partially covering these profile segments. The profile segments, as well as the connecting elements, are made of plastic and their elasticity enables the insertion of the profile segments into the cylindrical cavities of the connecting elements. The connecting elements include mostly cylindrical outer surfaces of the profile segment with a circumference greater than 180°C. The stability of the structure built from such elements is largely due to the panels themselves. The self-supporting frame construction cannot be produced without difficulty simply with already known plates and connecting elements, because the connecting area between the profile segments and the plates is made relatively narrow, to allow relative movement of the plates in relation to the connecting elements.

Starting from this, the task of the invention was to create a connection structure of the mentioned type, which enables easy handling with a functionally reliable structure. A clear separation of the various assembly procedures, namely positioning, adjustment and fixing, must be achieved.

The construction of the joint according to the invention enables quick assembly and fast connection making without difficulty and with simpler handling. The construction of the joint enables the production of a rod in which the profile according to the invention can be used, made as a floor rod and/or a horizontal cover rod and/or an inclined cover rod and/or a vertical rod and/or a horizontal rod. The construction of the joint allows making arbitrary horizontal joints of the walls in one stick. Furthermore, connections to arbitrarily inclined covers can be made without difficulty. The profile usefully contains in all four corners a tubular cavity with an axially symmetrical cross-section. This axis of symmetry forms the pivot axis of the connecting element, which can be rotated around this axis by a certain angle. The inner surfaces of the respective tubular cavity can be made cylindrical within the framework of the invention or so that they are located at least on the part of the inner surface of the area that lies to the axis of symmetry, on a cylindrical mantle that is coaxial with the axis. Thus, areas farther from the axis can be in the area between the previously mentioned parts. The inner surface can also have furrows, the "tips" of which, right next to the axis, lie on the coaxial surface of the cylindrical mantle. The tubular cavity covers an angular area greater than 180°C, so that the insert of the connecting element is surrounded and secured with the inner surface. Thus, the connecting element can be inserted into the cavity from the axial face and moved to the desired axial position. Furthermore, the cavity can have at least one side opening for inserting the connecting element, which after insertion can be moved to the desired axial position with regard to the length of the profile. Furthermore, within the framework of the invention, the center, that is, the axis and the radius of the cavity in relation to the edges of the profile can be set in such a way that the connecting element can be brought into the tubular cavity by connecting "spring struts" or "pressing connection", for example according to DIN 8593 .

The profile rail is purposefully made as a hollow profile and has high strength with less weight. The profile rail is purposefully made of metal and has a high moment of resistance. In a particularly purposeful design, the profile rail has a rectangular, preferably square section, whereby at least one of the four corner areas is provided with a cavity directed radially inward. In one particular embodiment, the profile rail has a basically square section and in one of the four corner areas there is a cavity directed radially inward. Between the two cavities, which are located in the corner areas, a flat side surface is provided, whereby a total of four side surfaces correspond to one rectangular, preferably square section. By making the profile rail as a profile hollow chamber made of metal in combination with the geometry according to the invention and the arrangement of the cavities and side surfaces, a high moment of resistance is possible with a negligible consumption of material.

The position of the connecting element remains in the tubular cavity without external action, while the position of the connecting element can be changed in the longitudinal direction and/or around its axis by the action of force. According to the invention, a closed connection of the insert in the tubular cavity is possible. This closed joint enables further adjustment of the axial position and angular position of the connecting element according to the profile. The insert, which for the sake of simplicity is referred to as the body for short, has an external shape adapted to the cavity of the profile on the cylindrical shell. Thus, the outer surface of the body of the connecting element can be made at least partially cylindrical, and this with approximately the same radius as the radius of the surface of the cylindrical shell of the tubular cavity. Furthermore, the outer surface of the body can be made so that at least part of the area lies on the surface of the cylindrical shell. The outer surface of the body within the framework of the invention can have grooves or be made as a polygon, the areas furthest from the axis lie on the mentioned cylindrical shell that corresponds to the cavity. The insert is placed at a certain angle to the direction essential for force transmission. Thus, the insert is placed especially at an angle of 45° to both side surfaces, which end in the cavity area. In contrast, the direction relevant to the holding force lies in a plane that is generally parallel to one or the other side surface of the profile. In this way, the insert is pressed with a holding force against the inner surface of the cavity or pulled out with a holding force without or with a very small component in the direction of retraction. This enables functionally reliable closing of the connecting element in the cavity.

The connecting element further contains a part that protrudes from the cavity, and which is again made according to the said body or as a segment, clamp or the like. With this element that protrudes from the cavity, a connection is made with a further profile or with another building element. The connecting element, especially its part that protrudes from the cavity, can be rotated and/or placed continuously, in a certain angular area, in any angular position around the axis of rotation defined by the cavity.

If the assembled rod, from the assembly according to the invention, wherein below the profiles made according to the invention are generally designated as rods, contains, for example, a horizontal rod between two vertical rods fixed in their positions, then it is adjusted in a simple way by translational movement. After adjustment, the horizontal rod can be moved in the vertical direction without difficulty. If the assembled rod contains several horizontal rods in one plane, then the two supporting elements, which are located one above the other in relation to said plane, can be mounted in the same position or in intersecting positions. The bearing elements, which are located between two horizontal rods, adjusted in their positions, can also be easily adjusted and fixed parallel to the longitudinal direction of said rods. Finally, such supporting elements can, after their adjustment, be moved vertically towards the plane where both horizontal rods are located. Furthermore, the fastening of the cladding can be carried out in a simple way with ready-made rod bridges with profiles and connecting elements of the joint construction according to the invention. Profiles can also be made as solid rods, for example from plastic, aluminum or steel, or also as hollow profiles from sheet steel or tubes of a certain wall thickness.

Further embodiments and special constructions of the invention are specified in the subclaims.

In the following, the invention will be explained in more detail using the examples shown in the drawings. Thereby

Figure 1 shows a profile rod with a cylindrical body of a connecting element,

Figure 2 shows the profile rod in its longitudinal direction,

Figure 3 shows an embodiment with a corner connecting element,

Figure 4 shows the special construction of the corner connecting element,

Figure 5 shows a design in which the connecting element has two cylindrical bodies that stand to each other at an angle greater than 90°C,

Figure 6 shows the version with a connecting element between two parallel and horizontally placed profiles,

Fig. 7 shows a design with one connecting element made in the form of a pipe connector, i

Figure 8 shows a design with four profiles interconnected at one connection point.

Figure 1 shows in perspective the profile 2 made in the form of a rod and the body 4 of the connecting element 5. For the sake of systematicity, the body 4 of the connecting element 5 is shown as a cylindrical body, whereby a similar body, within the scope of the invention, which has at least a partially cylindrical outer surface, is an integral part of differently constructed connecting elements, which will be further explained in detail. Profile 2, shown here with only one part of its total length, has a basically rectangular, especially square cross-section, whereby a tubular cavity 6 is provided in each of the four corner areas, which extends parallel to the longitudinal axis. Those four cavities 6 are made in harmony, and in relation to the axis of symmetry, they have a cylindrical surface of the mantle and primarily a circular section, which does not extend over the entire circumference of 360°. The cavity 6 has a cylindrical inner surface 8, an opening 9 extending in the direction of the axis, through which the body 4 can be inserted into the cavity 6.

The cylindrical inner surface extends over an angle of 180° and ends at two longitudinal edges 10, 11. Profile 2 contains four side surfaces 12, 13 that stand at right angles to each other and which in the shown version end in the area of the mentioned longitudinal edges 10, 11.

The body 4 has a cylindrical outer surface 14 adapted to the cylindrical inner surface 8 of the cavity 6 so that the body 4 can be introduced into the cavity 6. Furthermore, the width of the opening 9, i.e. the distance 16 of the longitudinal edges 10, 11 is adapted to the body 4 so that it can be introduced into the cavity 6. In addition, the body 4 moves in the direction of the arrow 18 and enters through the opening 9 into the cavity 6, preferably by connecting "spring struts" or "pressing connection" (compare DIN 8593). The adjustment of the body 4 on the opposite sides of the cavity 6 is carried out, furthermore, so that the body 4 introduced into the cavity 6 keeps its position in the cavity without external action, while on the other hand it changes due to the action of force. The body 4 can be moved by the action of an external force in the longitudinal direction of the cavity 6, i.e. parallel to the longitudinal axis 22 of the profile 2. Furthermore, the body 4 can be rotated around the axis of the cylinder 24 which, when the body is inserted, coincides with the axis of symmetry 26 of the cavity 6.

Furthermore, within the framework of the invention, the choice of material and/or the shape of the surface, especially the cavity 6, the profile 2 and/or the body 4, as well as their appropriate dimensioning, can satisfy practical requirements. The profile 2 and/or preferably the cylindrical body 4 can be made of metal, as well as plastic. The cylindrical body 4 has purposeful, especially at least partially, such spring elasticity that one person can manually place the at least partially cylindrical body 4 in the described manner in the cavity 6 and, if necessary, move it in the longitudinal direction and/or rotate it in the mentioned manner. Dimensioning and/or determining the material is done in such a way that the position of the at least partially cylindrical body 4, i.e. the connecting element in the cavity, is maintained.

With this, rough alignment of the system of elements or the system of additional elements can be undertaken without difficulty. The element of the system according to the invention, or similar, can be adjusted later by force, especially manually. Furthermore, if necessary, additional means can be used to secure it in the desired position, primarily by adjusting it, whereby it is possible to refer here primarily to supporting elements in combination with a cylindrical body and/or elements that act to close by force or shape.

In the following embodiment, the tubular cavity 6 contains a side opening for insertion 27, which is marked here with dashed lines.

The axial length of the insertion opening is at least equal to the axial length of the body 4. In the region of this insertion opening 27, an inner wall constructed as a cylindrical surface extends only over an angle of the order of 180°, so that the body can be inserted into the cavity without difficulty and can be placed, according to the above considerations, axially in the cavity. In this alternative embodiment, each cavity distributed in the corners of the profile has at least one such side surface. Furthermore, within the framework of the invention, a certain number of such openings, axially spaced across the cavity, can be provided for inserting the body of the connecting element.

Figure 2 shows an enlarged axial section of the square profile 2, in the corners of which there is one of the mentioned four harmoniously made cavities 6. The cylindrical inner wall 8 of each cavity 6 extends over an angle 28 which is greater than 180° and, according to the drawing, is approximately 260°. The distance between the longitudinal edges 10, 11 is smaller than the diameter 30 of the cavity 6. Also shown, the cylindrical body 4 has a diameter 32 which generally corresponds to the diameter 30 of the cavity 6. When the cylindrical body 4 is introduced into the cavity 6, then it with the areas 34, 35 internal of the walls 8, which continue to the longitudinal edges 10, 11, is adjusted and secured against automatic falling out of the cavity 6.

By pressing the body 4 in the direction of the arrow 18, the longitudinal edges 10, 11 are either separated from each other, which is made possible by the spring elasticity of the material, especially the profile 2, or by the spring action of the cylindrical body 4 that is to be adjusted. Additionally or alternatively, the elasticity of the body 4 is used within the scope of the invention if it is made, for example, of plastic or as an open tube of spring steel. Also, the dimensioning of the angle 28 is adapted to the properties of the material for making the profile 2 and/or the body 4. For an elastic connection by pressing, the diameter of the body 4 is made for a certain amount, purposefully in accordance with the norms, larger than the diameter 30 of the cavity 6.

On the lower left in Figure 2, the theoretically extended lateral surfaces 12 and 13 for the complete profile 2 of the square section are marked with a dot-dash line. According to the invention, the tubular cavity 6 is located inside the ideal rectangular, especially square external shape of the profile 2. This allows further additional elements, such as a rod sheath, to be fixed on the side surfaces 12, 13 so that they do not interfere with the connecting element at that point. Thus, the connecting element can have a further element connected to the body, especially in the form of a segment 38. This element, or segment 38, does not go over the side surface 13 of the profile 2, so that a further additional element, such as a plate, can be placed on that side surface without difficulty 40, which is marked here with a dashed line, a covering made of bridges or similar. The plate 40, lining with bridges or the like is connected first of all with additional fastening elements, which are indicated by the dot-dash line 41, and in a particular further embodiment with the profile 2 and/or with the connecting element 5 and/or with its protruding part 38 Screws or rivets can be used particularly conveniently as fastening means. In the area of the above-described side opening 27 for insertion, the inner surface of the cavities extends only over an angular area of the order of 180°, so that the body of the connecting element can be inserted without further ado.

On the upper left in Figure 2, an alternative version of the tubular construction 6 is shown. The inner surface of the cavity 6 is not made closed cylindrical, but contains only parts of the area 42, which are coaxial with the axis 26. Those parts of the area 42 of the inner surface, which is located next to the axis of rotation, they are coaxial with the pivot axis 26, while the other areas 44 are located at a greater distance. The partial areas 42 are segments, the tops or surfaces of which are turned radially inward, within the scope of the invention, in relation to the pivot axis 26 and are located on the cylindrical surface of the mantle.

For all embodiments, it is important that the direction of insertion of the body 4, indicated by arrow 18, is at an angle to the plane in which the relevant holding forces act. The holding forces act in the direction of the part or segment 38 of the connecting element that protrudes from the cavity 6. For the connecting element shown at the bottom left with the segment 38, the relevant holding forces act in a plane that is perpendicular to the plane of the drawing and that runs parallel to the Y coordinate. If, on the contrary, the connecting element is placed in the cavity so that its segment 38 extends parallel to the side surface 12, then the direction of the relevant holding force is located in a plane that is mostly parallel to the side surface 12, i.e. in a plane perpendicular to the plane of the drawing and parallel to the coordinate X. In accordance with the respective direction of insertion of the connecting element 5, the relevant holding forces lie in planes mainly parallel to one or the other side surface, 12 and 13, respectively.

Profile 2 according to the invention, in a particularly purposeful way, in a plane perpendicular to the longitudinal axis, has a cross section symmetrical to the X and Y axes. inventions also include in principle rectangular cross-sectional surfaces, in the corner areas of which there are the described four cavities.

Figure 3 shows the construction of a connection with two vertical profiles 2, 3. The connecting element 5 is made as an angular element and has two mutually perpendicular cylindrical bodies 4, 4'. As can be seen, the body 4' is already introduced into the cavity 7 of the profile 3, and the second cylindrical body 4 of the connecting element will be introduced in the direction of the arrow 18 into the cavity 6 of the profile 2 in the previously described manner and then the horizontal profile 3 fits closely with its front surface on the front surface 13 of profile 2. During assembly, the horizontal profile 3 can be moved longitudinally in relation to the cylindrical body 4' by force, so that the front surface of profile 3 is brought into close contact with the front surface 13 as shown. of the profile 2 with the tubular cavity 6, then the body 4 is inserted into it, and the body 4' forms an element that according to the invention protrudes from the cavity 6. With this symmetrical construction of the connecting element 5, the same relationship applies inversely in relation to the profile 3, in which the tubular cavity 7 has another cylindrical body 4'. If only one connecting element is provided in the cavities 6 and 7, then the profile 3, after introducing the cylindrical body 4 into the cavity 6 of the profile 2, can be rotated around the pivot or axis of the cylinder 24 in accordance with the arrow 36. The construction of the connection according to the invention enables subsequent connection and the joint of the profile in the respective desired angular position.

Furthermore, within the scope of the invention, in the rear cavity 6' according to Figure 3, there is a further connecting element, which accordingly engages in the lower rear cavity of the horizontal profile. Thus, during assembly, both profiles 2, 3 can first be connected to each other, for example first only with the front connecting element 5 shown here, whereby the described rotation of the connection around the pivot axis 24 can also be performed. After that, the axial front surface of the profile 3 is placed .in abutment on the front surface 13 of profile 2 and in the next step the rear connecting element is then placed. On the basis of this double connection, a special permanent fastening and mutual connection of both profiles 2 and 3 is established.

Figure 4 shows a further construction according to the invention with the connecting segment 50 of the connecting element 5. Both bodies 4 and 4' are not directly connected to each other at an angle as in Figure 3, but end at a certain distance from the theoretical intersection. The connecting segment 50 is made mostly triangular and in relation to both cavities 6 and 7 it is an element that protrudes from them. This form of execution enables simple and at the same time functionally reliable insertion of the connecting element 5.

Figure 5 shows an embodiment with one connecting element, whose cylindrical bodies 4, 4' are placed so that they mutually close an angle greater than 90°, for example 135°. Interconnected profiles 2, 3 therefore have a corresponding mutual angular position. Accordingly, profile 2 in the manufactured rod can be erected vertically and profile 3 can serve as a slanted covering rod.

Figure 6 shows an example of the design according to which profiles 2, 3 are connected to each other in the first vertical plane with coordinates Z and X, and in the second, parallel vertical plane, profiles 2', 3' are connected, always by means of an angular connecting element 5. Between both horizontal profiles 3 and 3', a further connecting element 5' is provided, which has a middle segment 54. At each end of the segment 54, there is at least a partially cylindrical body 4', which engages in the described manner in the corresponding cavities of the mutually parallel profiles 3, 3 '. The surface 52 of the segment 54, facing upwards, is positioned so that it lies in the same horizontal plane as the upper surfaces of the side surfaces of both profiles 3 and 3'. In this way, a panel or covering of bridges or the like can be laid over the side surfaces of both profiles 3 and 3', which according to Figure 6 are turned upwards, without obstructing the way of the connecting segment 5' made in the form of a bridge, which according to the invention has a segment 54 with two parallel bodies at each end.

Fig. 7 shows a further construction, similar to that in Fig. 6, in which the connecting element 5 is made as a suspension coupling with a clamp 56 for the line 40. This connecting element 5, made as a coupling or as a slide, also contains an at least partially cylindrical body 4, which is introduced in the described way into the cavity of profile 3.

Finally, Fig. 8 shows an exemplary embodiment as a place of connection of four mutually perpendicular profiles according to the invention. There are four angled connecting elements 5, whose cylindrical bodies 4, 4' engage in corresponding vertically positioned cavities of adjacent profiles 2, 2', 3, 3'.

The node shown in Figure 8 can be extended to a maximum of six vertical profiles. In addition, for example, the connecting element 5, shown in Figure 8 on the upper right, can be placed rotated by 90° around the axis of the cylinder 24 of the cylindrical body 4, so that the cylindrical body 4' does not enter the profile 3, but stands in front outside the plane of the drawing , which enables the connection with the fifth profile that lies in front of the drawing plane. In the same way, a sixth profile can be placed behind the plane of the drawing, according to Figure 8, where further connecting elements are then accordingly placed there.

As an alternative to the design shown in Figure 8, the rods 3 and 3' can be made as a single passing rod to which the side profile rods 2 and 2' continue using connecting elements in the manner already explained and are connected to them.

Claims (12)

1. Construction of a joint with two rod profiles (2, 3) that has at least one cavity (6, 7) arranged primarily in the corner area, and with a connecting element (5) that engages with both cavities (6, 7) of the profile ( 2, 3), characterized by the fact that the cavities (6, 7) are made tubular, that the cavities (6, 7) have a cross-section related to the axis of symmetry (26) and that the connecting element (5) has a body (4', 4) arranged in the respective cavities (6, 7) coaxially with the axis of symmetry (26), whereby the outer surface (14) of the body (4, 4') lies at least partially on the inner surfaces (8) of the associated cavities (6,7). 2. Construction of the joint according to claim 1, characterized by the fact that at least part of the area (42) of the inner surface (8), which is the least distant from the axis of symmetry (26), is located on a cylindrical shell that is coaxial with the axis of symmetry (26). 3. Construction of the joint according to claim 1 or 2, characterized by the fact that the outer surfaces (14) of the body (4) are at least partially located on a cylindrical shell, the axis (24) of which is coaxial with the axis of symmetry (26) of the cavity (6). 4. Construction of the joint according to one of the claims 1 to 3, characterized in that the body (4) of the connecting element (5) is arranged in the cavity (6), closing the shape, and/or that the cavity (6) includes the body (4) in part angle (28) that is greater than 180°C, and/or that the body (4) of the connecting element (5) is held in the cavity (6) with a certain force so that the axial position and/or angular position can be adjusted in relative to the profile (2). 5. Connection construction according to one of claims 1 to 4, characterized in that the body (4) of the connecting element (4, 5) can be inserted into the cavity (6) by placing a spring support or by pressing and/or so that the connecting element (4, 5) maintains its position in the cavity (6) without external action, while its position can be changed by force. 6. Construction of the connection, especially according to claims 1 to 5, indicated by the fact that the rod profiles (2, 3) have a rectangular, preferably square section, that there are cavities (6, 1) in at least two corners of the relevant profile and that between the cavities (6) , 1) have mostly flat side surfaces (12, 13) . 7. Construction of the connection according to one of the claims 1 to 6, characterized by the fact that the position of the connecting element (5) in the cavity "(6) can be continuously changed in the direction of its axis of symmetry (26) and/or by a certain angle in relation to it axes of symmetry (26). 8. Connection construction according to one of claims 1 to 1, characterized in that the connecting element (5) has a part protruding from the cavity (6), which is made as a segment (38, 54) or as a connector or clamp (56) or as a second body (4' ) that can be inserted into the corresponding cavities of the second profile (3), and/or that both bodies (4, 4' ) are arranged at right angles to each other and are primarily connected to each other with the segment (38, 54) . 9. Construction of the connection according to one of the claims 1 to 8, indicated by the fact that the cavity (6) in relation to the axis of symmetry (26) is distributed in the area of the angle of the profile (2) so that the entire cylindrical shell of the cavity (6) is inside of the shape determined by the side surfaces (12, 13) of profile 2. 10. The construction of the connection according to one of the claims 1 to 9, indicated by the fact that the connecting element (5), especially its part (38) that protrudes from the cavity (6) is located on the same side as the profile (2) in relation to the plane determined by the side surface (12) of the profile (2). 11. Construction of the joint according to one of the claims 1 to 10, characterized in that the inner surfaces (8) of the cavity (6) end at the longitudinal edges (10, 11) where the outer side surfaces (12, 13) of the profile are connected, whereby the longitudinal edges (10, 11) are located at a distance (16) that is smaller than the diameter (30) of the cavity (6) and/or the diameter (32) of the connecting element (5). 12. The joint construction according to one of claims 1 to 11, characterized in that the profile (2) in the plane perpendicular to the longitudinal axis (22), which defines the coordinate Z, has a section symmetrical to the longitudinal axis intersected by the coordinates X and Y.