AT527406B1 - connectors - Google Patents

Abstract

In a connector (1) for detachably connecting two wall elements (2) of a building, wherein a closure part (7) of the connector (1) has an at least partially undercut groove (8) with an open edge on one end face, wherein a first elevation (4) of a first connecting part (3) of the connector (1) and a second elevation (6) of a second connecting part (5) of the connector (1) - in a state of the connecting parts (3, 5) in contact with one another - form a spring (10) with one another, wherein an elevation cross-section of the first and/or the second elevation (4, 6) which is substantially perpendicular to the longitudinal direction (15) of the first and/or the second connecting part (3, 5) widens along the longitudinal direction (15) to the middle (16) of the connecting part (3, 5), it is provided that an axis of symmetry is arranged in the middle (16) of the connecting part (3, 5), wherein the first and/or the second elevation (4, 6) extends symmetrically from the axis of symmetry in the direction of two ends of the connecting part (3, 5).

Description

Description

CONNECTORS

[0001] The invention relates to a connector for detachably connecting two wall elements according to the preamble of patent claim 1.

[0002] It is known to connect wall elements, in particular wall elements for timber frame construction or timber panel construction, to one another by means of connectors. This is usually done by means of angle connectors.

[0003] From FR 1 179 786 A a connector comprising two parts and a connecting part is known, wherein the connecting part is designed to be connected to the two parts, wherein the two parts have rails which form a conical surface when the two parts are in contact with one another.

[0004] From FR 1 377 447 A, a connector for connecting two components with a recess is known. A connecting element, which is a substantially rectangular part having two bevelled rails at the ends, is fastened in the recess and connected to a closure part having a trapezoidal cross-section.

[0005] WO 2020/065123 A1 discloses a system for connecting wall elements to one another, wherein metal frame parts are attached to the side surfaces of the wall elements during the manufacture of the wall elements. The metal frame parts have a box-like end with an extension, whereby a locking extension is formed for a corresponding recess on a connecting element.

[0006] From US 1 919 780 A a connector for a shed is known, wherein two wall elements are arranged abutting against each other and are connected to each other by a connecting part comprising a bent back end and a closure part, which closure part is bent in the opposite direction to the connecting parts.

[0007] From EP 4 067 594 A1 a connecting fitting for connecting two components comprising a groove fitting and a complementary spring fitting is known.

[0008] From DE 295 01 159 U1 a connecting construction for fences, garden sheds or the like is known.

[0009] From EP 0 050 462 A1 a lightweight and inexpensive glazing is known.

[0010] From US 4 430 838 A a type of connection for connecting two wall elements comprising a rectangular first metal plate and a conical locking part is known.

[0011] Door locks are known from US 4 103 949 A and WO 97/21896 A. [0012] A wedge connector for a cabinet is known from DE 408376 C.

[0013] In a timber frame construction, the individual wall elements have a surrounding frame and are independent components. It is known to provide a wooden framework made of vertical and horizontal rods, which take on the vertical load-bearing function, and to form horizontal bracing using plate-shaped wall building materials, embedded struts or diagonally applied boards. The individual wall elements can be prefabricated for a building, so that

These only need to be connected to one another at the building site. The use of prefabricated wall and ceiling elements for a timber frame construction is often also referred to as timber panel construction.

[0014] The disadvantage of using conventional connectors to connect wall elements, particularly for timber frame construction or timber panel construction, is that they protrude beyond the wall element after being attached to the wall element. This means that the wall elements can only be prefabricated to a limited extent, which is why conventional wall elements are usually not provided with a connector after production, but the wall elements are attached using the connectors at the construction site.

[0015] Furthermore, previously known connectors have the disadvantage that often, after two wall elements have been connected, it is no longer possible to check whether the two wall elements have been connected correctly or in accordance with the manufacturer's specifications.

[0016] The object of the invention is therefore to provide a connector of the type mentioned at the outset, with which the disadvantages mentioned can be avoided, with which two wall elements can be connected to one another and also separated again easily and quickly.

[0017] According to the invention, this is achieved by the features of patent claim 1.

[0018] This results in the advantage that two wall elements can be connected to one another quickly and easily. In order to connect two wall elements to one another, all that is required is to attach the first connecting part to a first wall element and the second connecting part to a second wall element, to arrange the two wall elements in such a way that the two connecting parts are arranged adjacent to one another and to apply the at least one locking part to the spring. This means that the building can be erected at the construction site much more quickly than when using currently known connectors. The connector according to the invention can be used on a large number of different node connections, such as longitudinal and T-joints, whereby different connectors would normally be required. This can improve the prefabrication of wall elements, whereby fastening locations for the connecting parts can be specified at predeterminable positions on the wall elements or connecting parts according to the invention can be attached to the wall elements during production, whereby the wall elements only need to be connected to one another at the construction site using the at least one locking part. Furthermore, the connection between the two wall elements can be quickly released again by simply removing, in particular pulling off, at least one locking part from the spring. In summary, this creates a multifunctional connector that has a high load-bearing capacity in different load directions, is simple and versatile to use and ensures traceable dismantling.

[0019] The invention further relates to a building according to claim 10.

[0020] The invention further relates to a method for detachably connecting two wall elements by means of the connector according to the invention according to patent claim 11.

[0021] The invention therefore has the further object of specifying a method of the type mentioned at the outset, with which the disadvantages mentioned can be avoided, with which two wall elements can be connected to one another and also separated again easily and quickly.

[0022] According to the invention, this is achieved by the features of patent claim 11.

[0023] The advantages of the method correspond to the advantages of the above-mentioned connector. [0024] The subclaims relate to further advantageous embodiments of the invention.

[0025] The invention is described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example.

[0026] Fig. 1 shows a preferred embodiment of a first or a second connecting part in an axonometric view,

[0027] Fig. 2 the connecting part shown in Fig. 1 in plan view,

[0028] Fig. 3 the connecting part shown in Fig. 1 in side view from the right,

[0029] Fig. 4 the connecting part shown in Fig. 1 in front view,

[0030] Fig. 5 the connecting part shown in Fig. 1 in bottom view,

[0031] Fig. 6 shows a preferred embodiment of a closure part in an axonometric view, [0032] Fig. 7 shows the closure part shown in Fig. 1 in plan view,

[0033] Fig. 8 shows the longitudinal section AA shown in Fig. 7,

[0034] Fig. 9 the closure part shown in Fig. 7 in front view,

[0035] Fig. 10 two connecting parts shown in Fig. 1 in a state adjacent to each other

and in plan view,

[0036] Fig. 11 shows a preferred embodiment of the connector according to the invention with two closure parts in a state fastened to two wall elements in plan view.

[0037] Figures 1 to 11 show at least parts of a connector 1 for detachably connecting two wall elements 2, wherein the connector 1 comprises a first connecting part 3 with a first elevation 4, a second connecting part 5 with a second elevation 6 and at least one closure part 7, wherein the closure part 7 has a groove 8 for a tongue-and-groove-like connection of the closure part 7 with the first and second connecting parts 3, 5, wherein the groove 8 is at least partially undercut and is open at the edge on at least one end face 9 of the closure part 7, wherein the first elevation 4 and the second elevation 6 - in a state of the first and second connecting parts 3, 5 in contact with one another - form a tongue 10 for connection to the groove 8 of the at least one closure part 7, wherein the tongue 10 is formed at least in regions opposite to the groove 8 of the at least one closure part 7.

[0038] Furthermore, a building comprising at least two wall elements 2 and the connector 1 according to the invention is provided, wherein the first connecting part 3 is fastened to a first wall element 2 and the second connecting part 5 is fastened to a second wall element 2, and wherein the groove 8 of the at least one closure part 7 at least partially positively engages the formed spring 10 of the first and second connecting parts 3, 5 for connecting the first wall element 2 and the second wall element 2 to one another.

[0039] Furthermore, a method for detachably connecting two wall elements 2 by means of the connector 1 according to the invention is provided, wherein the first connecting part 3 is fastened to a first wall element 2, wherein the second connecting part 5 is fastened to a second wall element 2, wherein the first wall element 2 is arranged facing the second wall element 2 in such a way that

that the spring 10 is formed by the first elevation 4 and the second elevation 6 together, and wherein the groove 8 of the at least one closure part 7 is at least partially positively connected to the spring 10.

[0040] This results in the advantage that two wall elements 2 can be connected to one another easily and quickly. In order to connect two wall elements 2 to one another, all that is required is to attach the first connecting part 3 to a first wall element and the second connecting part 5 to a second wall element, to arrange the two wall elements in such a way that the two connecting parts 3, 5 are arranged adjacent to one another and to apply the at least one locking part 7 to the spring 10. This means that the building can be erected at the construction site much more quickly than when using currently known connectors. The connector 1 according to the invention can be used on a variety of different node connections, such as longitudinal and T-joints, whereby different connectors would normally be required. This makes it possible to improve the prefabrication of wall elements 2, whereby fastening locations of the connecting parts 3, 5 can be specified at predeterminable positions of the wall elements 2 or connecting parts 3, 5 according to the invention can be fastened to the wall elements 2 during production, whereby the wall elements 2 only have to be connected to one another at the installation site using the at least one locking part 7. Furthermore, the connection between the two wall elements 2 can also be quickly released again by simply removing, in particular pulling off, the at least one locking part 7 from the spring 10. In summary, this makes it possible to create a multifunctional connector 1 which has a high load-bearing capacity in different load directions, is simple and versatile to use and ensures traceable dismantling.

[0041] The connector 1 is suitable for connecting two wall elements 2 to one another. The connector 1 has the material-specific properties which are required for connecting the two wall elements 2.

[0042] Preferably, the connector 1 is a wood connector. A wood connector is suitable for connecting two wood components.

[0043] The wall elements 2 are preferably wall elements 2 of a building, in particular a timber structure, a timber frame structure and/or a timber panel structure.

[0044] Preferably, the wall element 2 is a wall-like component, in particular a panel or a wooden panel, and/or a rod-shaped component, in particular a post or a wooden post.

[0045] Preferably, the wall element 2 is a prefabricated part of a building, in particular a prefabricated house. In particular, the wall element 2 is at least part of a wall panel of the building. The wall panel is a well-known term from structural engineering and describes a wall which, as a flat supporting structure, has a panel effect, i.e. is loaded by forces which lie in its plane.

[0046] Preferably, the connector 1 is also suitable for connecting components for a building ceiling, in particular for connecting ceiling panels.

[0047] Preferably, the building is a prefabricated house.

[0048] Preferably, the building is a timber frame construction. Timber frame construction is also known as timber frame construction, timber rib construction or timber frame construction.

[0049] The connector 1 comprises a first connecting part 3 with a first elevation 4 and a second connecting part 5 with a second elevation 6. Various views of a preferred embodiment of the first and/or second connecting part 3, 5 are shown by way of example in FIGS. 1 to 5. Fig. 1 shows an axonometric view, Fig. 2 a top view, Fig. 2 a side view from the right, Fig. 4 a front view and Fig. 5 a bottom view of the connecting part 3, 5.

[0050] Preferably, the first and/or the second connecting part 3, 5 is made of metal, in particular comprising iron and/or aluminum.

[0051] Preferably, the first and/or the second connecting part 3, 5 can be formed from a polymer, in particular from plastic.

[0052] It can be particularly preferably provided that the first and/or the second connecting part 3, 5 has a substantially plate-shaped base body 11 and that the first and/or the second elevation 4, 6 extends from the plate-shaped base body 11. This can be seen by way of example in Figs. 1, 3 and 4. The substantially plate-shaped base body 11 enables a stable fastening of the first and/or second connecting part 3, 5 to a wall element 2 with good contact. The substantially plate-shaped design means that fastening can be carried out, for example, by means of an adhesive, which adhesive is applied to the underside of the plate-shaped base body 11. The underside of the plate-shaped base body 11 can be seen by way of example in Fig. 5. The substantially plate-shaped base body 11 also enables the first and/or the second connecting part 3, 5 to be screwed particularly well to a wall element 2, since sufficient space is formed for fastening openings 12.

[0053] Preferably, the first and/or the second elevation 4, 6 extends away from the substantially plate-shaped base body 11.

[0054] Preferably, the first and/or the second connecting part 3, 5 is formed in one piece. It can preferably be provided that the first and/or the second connecting part 3, 5 is milled from a metal block or that the first and/or the second connecting part 3, 5 is formed as an injection-molded part.

[0055] According to the invention, the first elevation 4 of the first connecting part 3 and the second elevation 6 of the second connecting part 5 form a spring 10 when they are in contact with one another. This can be seen by way of example in Fig. 10. As can be seen, the first elevation 4 forms a first part of the spring 10 and the second elevation 6 forms a second part of the spring 10. The formed spring 10 is designed to connect to the groove 8 of the at least one closure part 7, wherein the spring 10 is designed at least in regions to be opposite to the groove 8 of the at least one closure part 7. This can be seen by way of example in Fig. 3 and Fig. 9, wherein Fig. 3 is a side view from the right of the connecting part 3, 5 shown in Fig. 1 and Fig. 9 shows the closure part 7 shown in Fig. 7 in front view. Fig. 9 shows the front side 9 of the closure part 7, to which front side 9 the reference number 9 points. As can be seen in Fig. 7 and 9, the groove 8 is open at the edge on the front side 9.

[0056] As shown by way of example in Fig. 3, a raised cross-section substantially perpendicular to the longitudinal direction 15 of the first and/or second connecting part 3, 5 can vary along the longitudinal direction 15.

[0057] Particularly preferably, it can be provided that a cross-section of the first and/or second elevation 4, 6 which is substantially perpendicular to the longitudinal direction 15 of the first and/or second connecting part 3, 5 extends along the longitudinal direction 15 to the center 16 of the first and/or

of the second connecting part 3, 5 is widened. This makes it particularly easy to form a force-fitting and form-fitting connection of the at least one closure part 7 to the first and second connecting parts 3, 5 and to connect the at least one closure part 7 to the spring 10. This makes it particularly easy to push the groove 8 of the at least one closure part 7 onto the spring 10 with the open-edged end face 9. The longitudinal direction 15 of the first and/or second connecting part 3, 5 is shown as an example in Fig. 2.

[0058] Preferably, it can be provided that an axis of symmetry is arranged in the center 16 of the first and/or the second connecting part 3, 5, wherein the first and/or the second elevation 4, 6 extends symmetrically from the axis of symmetry in the direction of two ends of the first and/or the second connecting part 3, 5. The center 16 of the first and/or the second connecting part 3, 5 is shown by way of example in Fig. 2.

[0059] The connector 1 further comprises at least one closure part 7.

[0060] Preferably, the at least one closure part 7 is made of metal, in particular comprising iron and/or aluminum.

[0061] Preferably, the at least one closure part 7 can be made of a polymer, in particular of plastic.

[0062] The at least one closure part 7 comprises a groove 8 for a tongue and groove connection of the at least one closure part 7 with the first and second connecting parts 3, 5. For this purpose, the tongue 10 is formed at least partially opposite to the groove 8 of the at least one closure part 7.

[0063] The groove 8 of the at least one closure part 7 is at least partially undercut. Undercut in the sense of the invention means that the at least one closure part 7 cannot be lifted off the spring 10 after being applied to the first and second connecting parts 3, 5.

[0064] Preferably, the at least one closure part 7 can be pushed onto the spring 10 and after pushing on cannot be lifted off the spring 10 without the application of a large amount of force. According to the invention, the at least one closure part 7 is held in a form-fitting manner against lifting off by the undercut in a connected state of the connector 1. The connected state of the connector 1 is the state in which the first connecting part 3 rests against the second connecting part 5, thereby forming the spring 10 and the groove 8 of the at least one closure part 7 is connected to the spring 10.

[0065] Preferably, the groove 8 can be dovetail-shaped.

[0066] Preferably, the undercut can also be formed by milling into a groove side wall, wherein - in a connected state of the connector 1 - an opposite bead of the first and the second elevation 4, 6 engages in a milled groove side wall region.

[0067] Preferably, the at least one closure part 7 for connecting to the first and second connecting parts 3, 5 is pushed onto the formed spring 10 of the first and second connecting parts 3, 5.

[0068] Preferably, the at least one closure part 7 is open at the edge on at least one end face 9 of the closure part 7. The end face 9, on which the at least one closure part 7 is open at the edge, can be seen by way of example in Fig. 7 and in the longitudinal section in Fig. 8.

[0069] Preferably, the at least one closure part 7 is formed in one piece. It can preferably be provided that the at least one closure part 7 is milled from a metal block or that the at least one closure part 7 is formed as an injection-molded part.

[0070] Particularly preferably, it can be provided that the first and/or the second connecting part 3, 5 has fastening openings 12 for fastening to a wall element 2. Preferably, the first and/or second connecting part 3, 5 is fastened to a wall element 2 by means of fastening means, such as screws and/or nails, and the fastening openings 12. This allows a simple and firm fastening to a wall element 2 using conventional fastening means, since only the fastening means has to be introduced into the wall element 2 through the fastening opening 12.

[0071] Preferably, the first and/or the second connecting part 3, 5 can have at least two, in particular at least four, preferably at least eight, fastening openings 12.

[0072] Preferably, at least two, in particular four, fastening openings 12 can be formed at an angle to the plate normal. The plate normal is the normal vector to the surface of the base body 11.

[0073] It can be particularly preferably provided that the first and/or the second connecting part 3, 5 has a securing device 13 for securing the at least one closure part 7 in a state in which it encompasses the spring 10. The state in which it encompasses the spring 10 is preferably the state in which the at least one closure part 7 is pushed onto the spring 10. This makes it possible to achieve long-term fixation of the closure part 7 in the state in which it encompasses the spring 10 when the closure part 7 is arranged vertically, with the front side 9 of the groove 8 with the edge-open opening facing upwards. This makes it possible to effectively prevent the at least one closure part 7 from coming loose due to shocks and vibrations.

[0074] The securing device 13 can preferably be an opening into which a fastening means, such as a screw, a pin or a nail, can be introduced to secure the at least one closure part 7 in the state in which it encompasses the spring 10. The fastening means is preferably introduced through the opening into a wall element 2 to such an extent that it protrudes beyond the opening, i.e. does not end flush with the plate-shaped base body 11, and thereby mechanically prevents the closure part 7 from detaching from the spring 10.

[0075] Preferably, the securing device 13 may comprise a securing spring, which securing spring fixes the at least one closure part 7 in the state in which it engages around the spring 10.

[0076] It can be particularly preferably provided that the first connecting part 3 and the second connecting part 5 are designed identically. This results in particular in advantages in the production of the connector 1, since only one type of connecting part 3, 5 has to be formed, as well as in the planning of connection points on prefabricated wall components.

[0077] It can be particularly preferably provided that the first connecting part 3 and the second connecting part 5 each have a flat contact surface 14, and that the two contact surfaces 14 abut one another when the first and second connecting parts 3, 5 are connected. It is provided that the contact surface 14 is a substantially flat surface without tooth-like elevations and depressions. This makes it possible to achieve a flush connection of the connecting part 3, 5 to the wall element 2, which can facilitate the prefabrication of the wall element 2 and the handling during connection.

[0078] It can be particularly preferably provided that the first elevation 4 and/or the second elevation 6 - in the abutting state of the first and second connecting parts 3, 5 - form a continuous spring surface 18. This makes it particularly easy to form a stable spring 10, since the first elevation 4 and the second elevation 6 - in the abutting state - support each other. The spring surface 18 is shown as an example in Fig. 10.

[0079] Preferably, it can be provided that a visible surface of the first and second connecting parts 3, 5 - in the connected state - is larger than a visible surface of the at least one closure part 7. The visible surfaces are the surfaces that can be seen in Fig. 11, for example. The visible surface of the first and second connecting parts 3, 5 results from the surface of the first and second connecting parts 3, 5, as can be seen in Fig. 10, minus the surface of the at least one closure part 7.

[0080] Preferably, it can be provided that the fastening openings 12 are accessible in the connected state. Preferably, it can be provided that the fastening openings 12 are accessible after the connection of the at least one closure part 7 to the spring 10. As a result, the assembly or fastening of the first and/or the second connecting part 3, 5 to the wall element 2 can be checked particularly easily without the connection of the two wall elements 2 having to be released by means of the connector 1.

[0081] Preferably, a length 19 of the first and/or second connecting part 3, 5 can be at least twice, in particular at least three times, preferably at least four times, a width 20 of the first and/or second connecting part 3, 5. The length 19 of the first and/or second connecting part 3, 5 is to be measured along the longitudinal direction 15. The width 20 is to be measured orthogonal to the longitudinal direction 15. The length 19 and the length 20 are shown by way of example in Fig. 2.

[0082] Preferably, the ratio of the length 19 of the first and/or the second connecting part 3, 5 to the width 20 of the first and/or the second connecting part 3, 5 can be substantially 4:1.

[0083] Preferably, the length 19 of the first and/or second connecting part 3, 5 can be at least four times, in particular at least eight times, preferably at least ten times, a height 21 of the first and/or second connecting part 3, 5. The height 21 of the first and/or second connecting part 3, 5 is shown as an example in Fig. 3.

[0084] Preferably, the length 19 of the first and/or the second connecting part 3, 5 can be at least 80 mm, preferably at least 100 mm, preferably at least 140 mm.

[0085] Preferably, the length 19 of the first and/or the second connecting part 3, 5 can be a maximum of 300 mm, particularly preferably a maximum of 250 mm, preferably a maximum of 200 mm.

[0086] Preferably, a length 22 of the at least one closure part 7 can be at least 1.2 times, in particular at least 1.5 times, a width 23 of the at least one closure part 7. The length 22 and the width 23 of the at least one closure part 7 are shown by way of example in Fig. 7.

[0087] Preferably, the length 22 of the at least one closure part 7 can be at least three times, in particular at least four times, preferably at least five times, a height 24 of the at least one closure part 7. The height 24 of the at least one closure part 7 is shown by way of example in Fig. 9.

[0088] Preferably, the length 22 of the at least one closure part 7 can be at least 30 mm, in particular at least 50 mm, preferably at least 60 mm.

[0089] Preferably, the length 22 of the at least one closure part 7 can be a maximum of 100 mm, in particular a maximum of 90 mm, preferably a maximum of 80 mm.

[0090] It can be particularly preferably provided that the connector 1 comprises at least two closure parts 7, each closure part 7 having a groove 8 for the tongue-and-groove-like connection of the respective closure part 7 with the first and second connecting parts 5, each groove 8 being at least partially undercut and open at the edge on at least one end face 9 of the respective closure part 7, and that the tongue 10 is designed at least in some areas to be opposite to the respective groove 8 of the at least two closure parts 7. This allows the connection to be made even stronger than with just one closure part 7. Fig. 11 shows an example of the connection of two wall elements 2 by means of the connector 1 according to the invention, with two closure parts 7 being arranged on the tongue 10 in the connector 1.

[0091] Preferably, it can be provided that the two closure parts 7 are designed identically.

[0092] Preferably, the connector 1 may comprise only the first connecting part 3, the second connecting part 5 and a maximum of two closure parts 7.

[0093] It can be particularly preferably provided that the first wall element 2 and/or the second wall element 2 has a recess on an edge region 17, and that the first and/or the second connecting part 3, 5 is arranged within the recess. The recess is a recessed space in the first and/or the second wall element 2. Preferably, the first and/or the second connecting part 3, 5 is arranged completely within the recess. The first or the second connecting part 3, 5 is arranged within an envelope of the first or the second wall element 2. As a result, no protruding edges are formed by the first or the second connecting part 3, 5, which facilitates the prefabrication of the wall elements 2 and no space is required during transport due to protruding edges of the connector 1.

[0094] The following are principles for understanding and interpreting the present disclosure.

[0095] Characteristics are usually introduced with an indefinite article "a, an, one, one". Unless the context indicates otherwise, "a, an, one, one" is therefore not to be understood as a number.

[0096] A "substantially" in connection with a numerical value includes a tolerance of + 10% around the stated numerical value, unless the context indicates otherwise.

[0097] For ranges of values, the endpoints are included unless the context indicates otherwise.

Claims (11)

X Ds Nas SS Patent Claims 1. Connector (1) for detachably connecting two wall elements (2) of a building, in particular a timber structure, a timber frame structure and/or a timber panel structure, wherein the connector (1) comprises a first connecting part (3) with a first elevation (4), a second connecting part (5) with a second elevation (6) and at least one closure part (7), wherein the closure part (7) has a groove (8) for a tongue-and-groove-like connection of the closure part (7) with the first and second connecting parts (3, 5), wherein the groove (8) is at least partially undercut and has an open edge on at least one end face (9) of the closure part (7), wherein the first elevation (4) and the second elevation (6) - in a state of the first and second connecting parts (3, 5) in contact with one another - form a tongue (10) for connection to the groove (8) of the at least one closure part (7), wherein the tongue (10) at least in some areas is formed opposite to the groove (8) of the at least one closure part (7), wherein an elevation cross-section of the first and/or second elevation (4, 6) which is substantially perpendicular to the longitudinal direction (15) of the first and/or second connecting part (3, 5) widens along the longitudinal direction (15) to the middle (16) of the first and/or second connecting part (3, 5), characterized in that an axis of symmetry is arranged in the middle (16) of the first and/or second connecting part (3, 5), wherein the first and/or second elevation (4, 6) extends symmetrically from the axis of symmetry in the direction of two ends of the first and/or second connecting part (3, 5). 2. Connector (1) according to claim 1, characterized in that the first and/or the second connecting part (3, 5) has a substantially plate-shaped base body (11) and that the first and/or the second elevation (4, 6) extends from the plate-shaped base body (11). 3. Connector (1) according to claim 1 or 2, characterized in that the first and/or the second connecting part (3, 5) has fastening openings (12) for fastening to a wall element (2). 4. Connector (1) according to one of claims 1 to 3, characterized in that the first and/or the second connecting part (3, 5) has a securing device (13) for securing the at least one closure part (7) in a state in which it engages around the spring (10). 5. Connector (1) according to one of claims 1 to 4, characterized in that the first connecting part (3) and the second connecting part (5) are identical. 6. Connector (1) according to one of claims 1 to 5, characterized in that the first connecting part (3) and the second connecting part (5) each have a flat contact surface (14), and that the two contact surfaces (14) abut one another in a connected state of the first and the second connecting part (3, 5). 7. Connector (1) according to one of claims 1 to 6, characterized in that the first elevation (4) and/or the second elevation (6) - in the abutting state of the first and second connecting parts (3, 5) - form a continuous spring surface (18). 8. Connector (1) according to one of claims 1 to 7, characterized in that the connector (1) comprises at least two closure parts (7), each closure part (7) having a groove (8) for the tongue-and-groove connection of the respective closure part (7) with the first and the second connection part (5), each groove (8) being at least partially undercut and at least an end face (9) of the respective closure part (7) is open at the edge, and that the spring (10) is formed at least in regions opposite to the respective groove (8) of the at least two closure parts (7). 9. Building comprising at least two wall elements (2) and a connector (1) according to one of claims 1 to 8, characterized in that the first connecting part (3) is fastened to a first wall element (2) and the second connecting part (5) is fastened to a second wall element (2), and that the groove (8) of the at least one closure part (7) at least partially positively engages the formed spring (10) of the first and second connecting parts (3, 5) for connecting the first wall element (2) and the second wall element (2) to one another. 10. Building according to claim 9, characterized in that the first wall element (2) and/or the second wall element (2) has a recess at an edge region (17), and that the first and/or the second connecting part (3, 5) is arranged within the recess. 11. Method for detachably connecting two wall elements (2) by means of a connector (1) according to one of claims 1 to 8, characterized in that the first connecting part (3) is fastened to a first wall element (2), that the second connecting part (5) is fastened to a second wall element (2), that the first wall element (2) is arranged facing the second wall element (2) in such a way that the tongue (10) is formed by the first elevation (3) and the second elevation (6) together, and that the groove (8) of the at least one closure part (7) is at least partially positively connected to the tongue (10). 5 sheets of drawings