Fastening element for fastening support rail to surface

Abstract

The invention relates to a fastening element (1A-1C) for fastening a support rail (2) to a surface (50), comprising a base body (10) having a fastening region (100) for fastening the fastening element (1A-1C) to the surface (50) and a support rail placement region (101) for placing the support rail (2), and at least one holding section (11), the retaining section is designed to pass through an opening (20) in the support rail (2) and to surround a region (21) of the support rail (2) adjoining the opening (20). According to the invention, the at least one holding section (11) is connected to the base body (10) by means of an elastically bendable springing section (12A-12C).

Description

Technical Field

[0001] The present invention relates to a fixing element for fixing a support rail to a surface, an apparatus having such a fixing element, a switch cabinet having such an apparatus, a method for fixing a support rail to a surface, and a method for manufacturing such a fixing element. Background Technology

[0002] Support rails can be constructed as slender U-shaped or C-shaped profiles and are typically used to accommodate multiple components, such as connection terminals, especially series terminals. Connection terminals can be installed in the switchgear via the support rail. Support rails usually have multiple openings through which they are typically bolted to a surface, particularly the wall of the switchgear. Since the bolts are usually no longer accessible once components are assembled into the support rail, the support rail must first be bolted into the switchgear, and components can only be assembled into it after it is secured to the switchgear wall. Therefore, in prefabricated support rail systems, some components must often be removed from the support rail before it can be secured to the wall, for example, using bolts. Thus, prefabricated support rails can only be expendably assembled into the switchgear. This also makes automated assembly of support rails difficult. Therefore, the installation cost of equipping switchgear with support rails and components is very high.

[0003] DE 10 2020 120 766 A1 describes a fixing device for securing a support rail to a wall. The device has at least one fixing element having a wall fixing section for securing the fixing element to the wall and a support rail fixing section for securing the fixing element to the support rail. The support rail fixing section, in a fixed state, at least partially passes through an opening constructed in the support rail, and the support rail fixing section has a snap-fit ​​portion into which a portion of the support rail is pushed in the fixed state. Furthermore, the fixing device includes a locking element disposed separately from the fixing element. The locking element secures the support rail to the fixing element and can be mounted on the end of the support rail, thus eliminating the need to remove pre-assembled components of the support rail.

[0004] EP 4 009 457 A1 describes a fixing device in which a locking element is provided and the locking element is configured such that a linear movement is made between the fixing element and the support rail by the rotational movement of the locking element, such that the support rail is inserted into the snap-fit ​​portion of the support rail fixing section and is tensioned. Summary of the Invention

[0005] The purpose of this invention is to further improve the fixation of the support rail on the surface.

[0006] This objective is achieved by a subject matter having the features of claim 1.

[0007] Therefore, the fixing element for securing the support rail to the surface includes a base and at least one retaining section. The base has a fixing area for securing the fixing element to the surface and a support rail placement area for placing the support rail. The retaining section is designed to pass through an opening in the support rail and surround the area of ​​the support rail adjacent to the opening. It is specified that at least one retaining section is connected to the base via an elastically bendable spring section.

[0008] This is based on the understanding that support rails may have large manufacturing tolerances, which could compromise a satisfactory tight fit on the surface. Maintaining a flexible, bendable connection in the sections allows for a reliable tight fit even with relatively large tolerances, thanks to force fitting. Furthermore, maintaining a reliable, elastically tight fit via support rails eliminates the need for a separate additional locking element for each individual fixing element, further simplifying the fixing process.

[0009] The elastic section can be connected to the base material on the opposite outer edges, particularly only on the opposite outer edges. Therefore, the retaining section can generate high elastic tensile stress and retain the support track particularly reliably. Furthermore, this design allows for simple manufacturing using a slide-less die-casting method. For example, the elastic section can be separated from the base material by one or two gaps.

[0010] Alternatively, the spring section can be constructed in a U-shape. This allows for particularly large offsets even with materials that have relatively low flexibility. Therefore, it is particularly effective at compensating for large thickness differences in the support track.

[0011] The spring section can have two wings, each pointing toward at least one retaining section that tapers. This enables particularly precise guidance of flexibility, which can also generate high clamping force.

[0012] The fixing element may have an additional, particularly rigid, retaining section connected to the base. This can serve as a stop to prevent excessive deflection of the retaining section of the elastic suspension. This prevents plastic deformation of the elastic section.

[0013] Optionally, the retaining element includes a stop that limits the springback stroke of at least one retaining section. The stop may, for example, be constructed on the retaining section. This also prevents plastic deformation of the springback section.

[0014] At least one retaining section may have a centering pin, which is configured, for example, to engage with an opening in a surface. Such a centering pin is used, for example, to orient multiple individual retaining elements linearly relative to each other. Particularly when tightening, for example, bolts, the corresponding retaining elements can be prevented from rotating by the centering pin. Furthermore, such a centering pin can withstand torsional forces during installation and thus prevent plastic deformation of the retaining section and / or the spring section.

[0015] The fixing element may include zinc. For example, the fixing element may include or be made of a zinc alloy. It may be specified that the fixing element is made in the form of a zinc die casting. This allows for reliable, robust, and long-lasting fixing of the support rail, even when components of considerable weight are mounted on it. Furthermore, the zinc alloy allows the support rail to be electrically connected to a surface, for example, for grounding the support rail. Alternatively, different materials may be used. The fixing element typically includes or is made of one or more metals. For example, the fixing element includes iron, aluminum, or brass (or is made of the same metal).

[0016] At least one retaining section may have a snap-fit ​​portion. The area of ​​the support rail adjacent to the opening can be pushed into the snap-fit ​​portion. This achieves reliable retention. The retaining section may be configured, for example, in a hook shape.

[0017] A recessed surface can be constructed on the support rail placement area relative to an adjacent area. This allows the material of the support rail to be offset, for example, in the case of unfavorable tolerance combinations between the support rail and the fixing element, thereby achieving a reliable tight fit even in cases of manufacturing inaccuracies. The recessed surface is, for example, a plane. The recessed surface, for example, forms a recess in the support rail placement area. The recessed surface can be constructed on the retaining section and / or an additional retaining section. For example, the recessed surface surrounds the (additional) retaining section.

[0018] According to one aspect, a fixing element for securing a support rail to a surface is provided, which may optionally be constructed according to any of the aforementioned design schemes. The fixing element includes a base and at least one retaining section. The base has a fixing region for securing the fixing element to the surface and a support rail placement region for placing the support rail. The retaining section is configured to pass through an opening in the support rail and surround the region of the support rail adjacent to the opening. Here, at least one tool insert formed of the base is provided, on which a support surface is constructed, on which a tool, such as a flathead screwdriver, can be supported to compress, in particular press, the support rail into force-fitted engagement with the at least one retaining section. Thus, the force-fitted retention further improves the fixation of the support rail to the surface, which can be maintained without additional locking elements for each individual fixing element. Therefore, for example, a single locking bolt or the like is sufficient.

[0019] Optionally, the support surface has steps. Therefore, various particularly effective lever angles of the tool can be selected within a wide tolerance range.

[0020] Optionally, at least two tool inserts with oppositely oriented support surfaces are provided. This simplifies both assembly and disassembly.

[0021] According to one aspect, an apparatus is provided that includes a fixing element and a support rail according to any construction described herein. Regarding advantages, refer to the description above.

[0022] At least one retaining section can hold the support rail in a fixed position within the support rail placement area, in a force-fitting manner over the region adjacent to the opening. This ensures the support rail is reliably held after simple assembly.

[0023] According to one aspect, a device is provided that can be optionally constructed according to any of the above-described design schemes, comprising a plurality of fixing elements, each according to any of the design schemes described above. Regarding advantages, refer again to the description above.

[0024] According to one aspect, a switch cabinet with a surface is provided, wherein at least one device according to any design scheme described herein is fixed to the surface. Regarding advantages, refer again to the description above.

[0025] According to one aspect, a method for securing a support rail to a surface is provided. The method includes the steps of: providing at least one fixing element having a base and at least one retaining section, the base having a fixing region for securing the fixing element to the surface and a support rail placement region for placing the support rail, the retaining section being connected to the base via an elastically bendable spring section; securing the at least one fixing element to the surface; placing the support rail onto the support rail placement region, wherein at least one retaining section of the at least one fixing element passes through an opening in the support rail; and moving the support rail relative to the at least one fixing element such that at least one retaining section of the at least one fixing element forcefully surrounds the support rail in a region of the support rail adjacent to the opening. Regarding advantages, refer again to the description above. This method can use fixing elements of any design according to the present invention.

[0026] According to one aspect, a method is provided for manufacturing a fixing element for securing a support rail to a surface. The manufacturing method includes the steps of: forming a substrate and at least one retaining section, the substrate having a fixing region for securing the fixing element to the surface and a support rail placement region for placing the support rail, the retaining section being configured to pass through an opening in the support rail and surround a region of the support rail adjacent to the opening, such that at least one retaining section is connected to the substrate by at least one elastically bendable spring section. Regarding advantages, refer again to the description above. This method can be used to manufacture fixing elements of any design described herein.

[0027] Alternatively, the fastening element can be manufactured using zinc die casting. Alternatively, the fastening element can be made of different materials. For example, the fastening element can be made of iron, aluminum, or brass (or an alloy comprising zinc, iron, aluminum, and / or brass). Furthermore, the fastening element can also be manufactured as a bent sheet. Attached Figure Description

[0028] The ideas based on the present invention are described in detail below with the aid of embodiments shown in the accompanying drawings. Wherein: Figure 1 A view is shown of a fixing element used to secure a support rail on a surface; Figure 2 A view of the supporting rails is shown; Figure 3 It shows a surface and multiple objects fixed on that surface. Figure 1 A view of the switch cabinet with fixed components; Figure 4 It shows that according to Figure 3 A magnified partial view, with according to Figure 2 The support rail is shown fixed to the fixing element; Figure 5It is shown in accordance with Figure 4 A magnified partial view of the support rail on one of the fixed elements; Figure 6 It shows that according to Figure 4 An enlarged cross-sectional view of a support rail fixed to a surface by means of one of the fixing elements; Figure 7 It shows that according to Figure 6 A further magnified view of the portion, where there are no supporting tracks; Figure 8 It shows that according to Figure 7 The view is further magnified in detail, however, with supporting tracks; Figure 9 It shows that according to Figure 8 The view shows the compression area between the area of ​​the support rail and the retaining section of the fixing element; Figure 10 A top view shows the results according to Figure 1 Fixed components; Figure 11 and 12 Additional fixing elements are shown; Figure 13 A stop is shown in the holding section of the fixing element; Figure 14 It shows that according to Figure 12 A cross-sectional view of the fixed component in its assembled state; Figure 15 It shows that according to Figure 12 A cut-out perspective view of the fixing element in the retaining section without supporting rails; Figure 16 It shows that according to Figure 12 The shown fixing element is a cut-out perspective view in the area where the retaining section with the support rail is installed; Figure 17 It shows that according to Figure 12 The fixing element together with the support rail mounted thereon and the tools for installing and removing the support rail from the fixing element; Figure 18 and 19 It shows that according to Figure 12 A cross-sectional view of the fixing element fixed on the surface together with the support rail mounted thereon, and tools for installing and removing the support rail and the fixing element respectively. Figure 20 It shows that according to Figure 12 A cross-sectional view of the fixing element fixed to the surface together with the support rail mounted thereon; and Figure 21-24 A fixing element with a concave surface is shown. Detailed Implementation

[0029] Figure 1 It shows the method for using in the future Figure 2 The support rail 2 shown is fixed to surface 50, as in Figure 3 The wall-mounted fixing element 1A is shown in the figure.

[0030] The fixing element 1A includes a base 10 having a fixing region 100 for securing the fixing element 1A to the surface 50. Typically, the fixing region 100 can be configured to be secured to the surface 50 by bolting, riveting, welding, or other means. In the illustrated embodiment, the fixing region 100 includes a recess 103 having an opening 104 constructed at the bottom of the recess. Here, a bolt or rivet can pass through the opening 104 to secure the fixing element 1A to the surface 50. For example, a bolt is guided through the opening 104 and tightened into a bolt hole in the surface 50.

[0031] The base 10 also has a support rail placement area 101 for placing the support rail 2. In the example shown, the support rail placement area 101 is constructed flat and allows the flat base 22 of the support rail 2 to abut against it planarly (see, for example, [reference needed]). Figure 3 Other shapes may also be considered. The support rail placement area 101 is defined by a plurality of four positioning sections 108. Each positioning section 108 protrudes from the base 10 on the support rail placement area 101. The positioning sections 108 are configured to guide the support rail 2 on the fixing element 1A.

[0032] The fixing element 1A also includes (usually at least one, exactly one in this case) a retaining section 11 configured to guide through an opening 20 in the support rail 2 (see Appendix for example). Figure 2 , 4 And 5), and after the support rail 2 moves relative to the fixing element 1A, the region 21 adjacent to the opening 20 surrounding the support rail 2 (see Appendix 5 for example) Figure 5 , 6 (and 8). For this purpose, the retaining section 11 has a locking part 113 into which the region 21 of the support rail 2 adjacent to the opening 20 can be pushed.

[0033] The specification stipulates that the retaining section 11 is connected to the base 10 through the elastically bending section 12A.

[0034] The elastic segment 12A (here only) is connected to the base 10 at two opposing regions. Specifically, the elastic segment 12A is exemplary connected to the base 10 on opposing outer edges 102 of the base 10. Here, the elastic segment 12A is cut out from the base 10 through gaps S, exactly two gaps S in this case.

[0035] The spring section 12A has two wings 120A. A retaining section 11 is arranged between the two wings 120A. In the example shown, the wings 120A taper towards the retaining section 11. This design achieves flexibility in the spring section 12A, allowing the retaining section 11 to move relative to the base 10. Furthermore, the planar structure of the wings 120A and their connection to the base along a line extending parallel to the support track placement area 101 enable movement of the retaining section 11 in a direction perpendicular to the support track placement area 101, while simultaneously resisting rotation of the retaining section 11.

[0036] The fixing element 1A also has one or more tool inserts 105, which are multiple tool inserts 105 formed by the base 10. Each tool insert 105 has a support surface 106, on which the tool 6 can be supported, as shown in the following combination. Figure 17-19 As explained in more detail, this is to compress the support rail 2 into forcefully engaging (or releasing) at least one retaining section 11. In the example shown, four tool inserts 105 are respectively constructed in the corner regions of the base 10. Two additional exemplary tool inserts are respectively disposed between a pair of tool inserts 105. For ease of locking and unlocking, two or more, here three respectively, tool inserts 105 having oppositely oriented support surfaces 106 are provided.

[0037] As specified herein, each tool insert 105 has a step 107. This allows the tool 6 to be placed at an advantageous angle. The steps 107 of the opposing tool inserts 105, which are located along the longitudinal direction of the base 10 (corresponding to the movement of the support rail 2 on the base 10), are oriented opposite to each other.

[0038] Figure 2 The previously mentioned support rail 2 is shown. The support rail 2 has multiple openings 20. Each opening 20 has the same shape. Each opening 20 is formed as an elongated hole. The openings 20 are arranged in a row, or more precisely, along a straight line. These openings are arranged equidistantly from each other. Here, the support rail 2 is elongated and extends longitudinally, and the openings 20 are arranged along the longitudinal extension of the support rail 2.

[0039] The support rail 2 has a base 22 and two legs 23, which are adjacent to the opposing long sides of the base 22 and protrude from the base 22 at an angle. The legs 23 have outwardly curved ends. Therefore, components such as connecting terminals and locking parts can be easily snapped onto the support rail 2. For simplicity, the components snapped onto the support rail 2 are not shown here.

[0040] The support rail 2 can be fixed to the fixing element 1A in a particularly simple manner. Specifically, the support rail 2 is placed on the support rail placement area 101 along a placement direction (e.g., perpendicular to the support rail placement area 101), wherein the retaining section 11 of the fixing element 1A passes through one of the openings 20 of the support rail 2. Then, the support rail 2 is moved relative to the fixing element 1A (in a locking direction parallel to the support rail placement area 101) such that the retaining section 11 of the fixing element 1A forcefully surrounds the support rail 2 in a region 21 adjacent to the opening 20 of the support rail 2. (As can be achieved by means of...) Figure 2 As can be seen, the region 21 of the support rail 2 adjacent to the opening 20 is provided between two adjacent openings 20 of the support rail. The region 21 of the support rail 2 adjacent to the opening 20 here includes a portion of the edge of the respective opening 20.

[0041] Figure 3 It shows multiple bases Figure 1 The device 4 is constructed with fixing elements 1A. The fixing elements 1A are arranged in a row, specifically, along a straight line.

[0042] Here, fixing elements 1A are securely fixed to surface 50. For this purpose, surface 50 has multiple openings 500, 501. As already mentioned, surface 50 is here formed by a wall. The wall is here part of switch cabinet 5, which is shown only schematically with dashed lines. The wall is also constructed only by way of example. For example, the wall has a... Figure 3 The larger height shown, and supports multiple rows of fixed elements 1A arranged parallel to each other.

[0043] The switch cabinet 5 includes device 4 (or multiple such devices 4).

[0044] Figure 4 A device 4 is shown having support rails 2 fixed to fixing elements 1A. The retaining section 11 of each fixing element 1A clamps the support rail 2 forcefully toward the corresponding support rail placement area 101. Therefore, the support rail 2 is reliably held on the surface 50 and thus held within the switch cabinet 5. Here, bolts or similar installation is unnecessary after assembling the support rail 2. Instead, reliable fixation of the support rail on the surface 50 is achieved solely by the movement of the support rail relative to the fixing element 1A. Thus, for example, prefabricated, seamlessly assembled support rails 2 can be fixed to the surface 50 in a particularly simple manner.

[0045] In a method for fixing a support rail 2 onto a surface 50, firstly, for example, according to... Figure 1Alternatively, one or more fixing elements according to another embodiment described herein. This or these fixing element elements 1A are fixed to surface 50. Then, the support rail is fixed to (one or more) fixing element 1A as described above.

[0046] Figure 5 The image shows the support rail 2 fixed to one of the fixing elements 1A. Here, the support rail 1A is surrounded on the side by the positioning section 108.

[0047] Furthermore, it can be seen that the opening 20 of the support rail 2 has at least the same width as the retaining section 11 (the same width in this case) and at least the same length as the retaining section 11 (the longer length in this case).

[0048] One or more markings, in the form of two arrows in this case, indicate to the user how far the support rail 2 is pushed into the locking part 113 of the retaining section 11 in order to ensure a reliable locking.

[0049] Figure 6 and Figure 8 The position of the locking mechanism of the support rail 2 on the fixing element 1A is shown. Figure 7 In contrast, the fixing element 1A is shown in the area of ​​the retaining section 11 without the support rail 2. In the locked position, the protrusion 115 of the retaining section 11 overlaps the area 21 of the support rail 2. As can be seen in the cross-sectional view, the retaining section 11 has an inlet ramp 114 on the protrusion 115 facing the support rail placement area 101. If the support rail 2 is pushed into the locking part 113 with area 21, the edge of the opening 20 slides along the inlet ramp 114 and lifts the retaining section 11. Here, the spring section 12A is elastically tensioned, thereby the retaining section 11 applies force to the support rail 2 and thus forcefully holds the support rail fixed.

[0050] Figure 9 The compression region V is shown, in which the support rail 2 occupies a space such that, in the relaxed state without the support rail 2, the protrusion 115 of the retaining segment 11 occupies this space. By inserting the region 21 of the support rail 2, the protrusion 115 of the retaining segment 11, which then protrudes beyond the region 21 of the support rail 2, is compressed perpendicular to the direction of movement. The protrusion 115 is here constructed in a hook shape, although other shapes are also conceivable.

[0051] To prevent plastic deformation of the retaining section 11, a stop is used to limit the maximum offset of the retaining element 11. Here, the springback stroke of the retaining element 11 is limited by a stop 110 rigidly connected to the protrusion 115, which stops the displacement away from the surface 50 at a mating stop 114. In the example shown, the mating stop 140 is constructed by a bolt 14 that screws the retaining element 1A to the surface 50, specifically through the underside of the bolt head of the bolt 14.

[0052] To limit displacement in the opposite direction (towards surface 50), an additional stop 111 is provided, which is also rigidly connected to the protrusion 115. This additional stop 111 is provided to stop on surface 50.

[0053] Figure 6 A centering pin 112 for retaining section 11 is also shown. The centering pin 112 is configured to be inserted into an opening 501 in surface 50. This prevents torsion of retaining section 11, which would release support rail 2. The centering pin 112 transitions into protruding section 115.

[0054] Figure 10 It shows that according to Figure 1 A top view of the fixing element 1A. Figure 11 and 12 In comparison, two other design schemes for fixing elements 1B and 1C are shown.

[0055] Figure 11 The fixing element 1B shown is similar to that according to Figure 10 The fixed element 1A is constructed in a U-shape. In contrast, the spring-loaded section 12B of the fixed element 1B is not connected to the opposing outer edges of the base 10, but rather to a region arranged along the same line. The wings 120B of the spring-loaded section 12B each have a curved portion. The two wings 120B have sections extending parallel to each other from the base 10, transitioning into opposing sections, which then intersect at the retaining section 11. Therefore, the spring-loaded section 12B is constructed in a U-shape.

[0056] This design allows for a greater spring travel, and therefore allows for greater tolerance compensation.

[0057] Figure 12 The fixing element 1C shown is similar to that according to Figure 10The fixing element 1A is constructed in a specific manner. In contrast, the fixing element 1C, in addition to the retaining section 11, has another retaining section 13 rigidly connected to the base 10. Furthermore, the wings 120C of the spring section 12C contract only on one side, rather than on both sides. On one side, the wings 120C extend towards each other in a V-shape. The other sides of the two wings 120C transition straight into each other.

[0058] exist Figure 12 In the fixed element 1C shown, the additional rigid retaining section 13 serves both a retaining function and a stop function, which limits the springing stroke of the spring element 12C. For comparison, in Figure 13 The stop portion of the fixing element 1A is shown again in a magnified view.

[0059] like Figure 14 As shown, the additional retaining section 13 is securely fixed to the surface 50 by bolts 14 (or other fastening devices) that are mounted to the fixed section 100. Therefore, this additional retaining section 13 is immovable relative to the surface 50. The protrusion of the additional retaining section 13 (corresponding to the protrusion 115 of the retaining section 11) is spaced further from the surface 50 than the protrusion 115 of the retaining section 11. Therefore, if the support rail 2 is pushed in, the additional retaining section 13 limits the maximum offset of the retaining section 11.

[0060] In the opposite direction, the spring travel of the retaining section 11 of the retaining element 1C is similar to that defined by the retaining element 1A via a stop 111 rigidly disposed on the retaining section 11, the stop facing the surface 50 and capable of stopping against the surface, see in particular Figure 14 , 15 And 16.

[0061] According to the appendix Figures 17 to 19It can be seen how the support rail 2 can be placed in a position that is reliably fixed relative to the fixing element 1C (and in a corresponding manner relative to the other fixing elements 1A, 1B, 1C). For this purpose, a tool 6, for example in the form of a flathead screwdriver, is inserted into the tool insert 105. The corresponding support surface 106 acts as a support, while the tool 6 acts as a lever and presses against the end edge of the support rail 2. Here, an effective lever angle can always be achieved by means of the step 107. Here, the tool 6 is placed on one side for fixing and on the opposite side of the fixing elements 1A-1C, which are on the same fixing element 1C or located at the other end of the support rail 2, for loosening. Here, the support rail 2 can also be tightened step by step 107. If the support rail 2 extends beyond the fixing element 1C, one of the tool inserts arranged centrally on the base 10 in the width direction can be used, these tool inserts being aligned with the opening 20 of the support rail 2, so that the tool can be guided through one of the open openings 20.

[0062] The fixing elements 1A-1C shown are made of zinc alloy and are made in the form of zinc die castings.

[0063] Because zinc is a low-melting-point metal, zinc die castings are generally prone to creep. Therefore, strain may occur over time under constant load. Since the elastic retaining section 11 is under constant load after the support rail 2 is installed, creep may occur in long-term performance. This can be prevented by the stops 110, 111 and / or an additional retaining section 13 that is rigidly connected.

[0064] In a method for manufacturing fixing elements 1A-1C for fixing support rail 2 to surface 50, the following steps are performed: A base 10 and at least one retaining section 11 are formed. The base has a fixing region 100 for fixing the fixing elements 1A-1C to the surface 50 and a support rail placement region 101 for placing the support rail 2. The retaining section is configured to guide through the opening 20 in the support rail 2 and surround the region 21 of the support rail 2 adjacent to the opening 20, such that at least one retaining section 11 is connected to the base 10 by at least one elastically bendable spring section 12A-12C. The fixing elements 1A-1C are currently manufactured here by means of zinc die casting.

[0065] Optionally, before manufacturing the fixing elements 1A-1C, a tolerance analysis is performed regarding the manufacturing tolerances of the support rail 2 and / or the arrangement of the openings 500, 501 on the surface 50. For example, the hole pattern of the opening 20 of the support rail can be shifted along the length of the support rail 2 by a maximum of + / - 2 mm. The length of the protruding section 115, excluding the guide ramp 114, can then be determined such that, despite significant fluctuations in the position of the elongated hole, the support rail 2 is always positioned below the protruding section, which can also be referred to as the fixing arm.

[0066] The tolerance of the material thickness of the support rail 2 can be compensated for by the spring-loaded suspension of the retaining section 11. A force-fit connection is established between the support rail 2 and the fixing elements 1A-1C. To optimize this, the minimum and maximum dimensions of multiple support rails 2 can be determined through tolerance analysis, which is derived from the two components (support rail 2 and fixing elements 1A-1C). For example, the distance from the protrusion 115 of the retaining element 11 to the support rail placement area 101 in a direction perpendicular to surface 50 is equal to the minimum dimension derived from the tolerance analysis. For example, the spring-loaded sections 12A-12C are designed such that they can be offset so far that the support rail can be inserted at its maximum size. Optional stops 110, 111 prevent overload.

[0067] Figures 21 to 24 A fixing element 1C is shown, which is arranged according to Figure 12 The fixed element structure includes a recessed surface 109 on the support rail placement area 101, compared to the previous structure. To form the recessed surface 109, during manufacturing according to... Figure 12 The fixing element 1C is then introduced onto the surface 109, for example, by means of a punch. Alternatively, the fixing element 1C can be originally formed having the surface 109 recessed relative to the adjacent area of ​​the support rail placement area 101.

[0068] Surface 109 is flat in this case. In the example shown, the area of ​​the support rail placement area 101 adjacent to surface 109 is also flat. Surface 109 extends parallel to (and offset from) the adjacent area of ​​the support rail placement area 101. Surface 109 forms a recess in the adjacent area of ​​the support rail placement area 101. Surface 109 is arranged on an additional retaining section 13 in the present case. Specifically, surface 109 surrounds the additional retaining section on three sides. Surface 109 is recessed relative to the adjacent area of ​​the support rail placement area 101 by a step, as particularly... Figure 22 This can be seen in the detailed images.

[0069] exist Figure 23 And especially according to Figure 24As can be seen in the detailed diagram, there is a gap A between the sunken surface 109 and the area 21 of the support track 2 adjacent to the opening 20.

[0070] Therefore, even with unfavorable tolerance combinations between the support rail 2 and the fixing element, the material of the support rail 2 can be shifted into the recess formed by the surface 109. Thus, a reliable tight fit can be achieved even with large manufacturing tolerances.

[0071] The ideas upon which this invention is based are not limited to the foregoing embodiments, but can in principle be implemented in completely different ways.

[0072] Explanation of reference numerals in the attached figures

[0073] 1A-1C Fixing Components

[0074] 10 matrix

[0075] 100 fixed areas

[0076] 101 Support Rail Placement Area

[0077] 102 outer edge

[0078] 103 depression

[0079] 104 opening

[0080] 105 Tool Embedding Section

[0081] 106 support surface

[0082] 107 steps

[0083] 108 positioning section

[0084] 109 surface

[0085] 11 Maintaining Section

[0086] 110, 111 stop section

[0087] 112 Resilience Pin

[0088] 113 Card Connector

[0089] 114 Importing the Inclined Surface

[0090] 115 protrusion

[0091] 12A-12C Bounce Section

[0092] 120A-120C wings

[0093] 13 Other maintenance sections

[0094] 14 bolts

[0095] 140 Matching Stop

[0096] 2 Support Rails

[0097] 20 opening

[0098] Area 21

[0099] 22 bases

[0100] 23 legs

[0101] 4 devices

[0102] 5 switch cabinets

[0103] 50 surface

[0104] 500, 501 opening

[0105] 6 tools

[0106] A Spacing

[0107] S-gap

[0108] V-shaped extrusion area

Claims

1. A fixing element (1A-1C) for fixing a support rail (2) to a surface (50), comprising: The substrate (10) has a fixing area (100) for fixing the fixing elements (1A-1C) to the surface (50) and a support rail placement area (101) for placing the support rail (2). At least one retaining section (11), the retaining section being configured to pass through an opening (20) in the support rail (2) and surround a region (21) of the support rail (2) adjacent to the opening (20), characterized in that, The at least one retaining section (11) is connected to the base (10) through elastically bending sections (12A-12C).

2. The fixing element (1A) according to claim 1, characterized in that, The elastic section (12A) is connected to the base (10) on the opposing outer edges (102) of the base (10).

3. The fixing element (1B) according to claim 1 or 2, characterized in that, The elastic section (12B) has a U-shaped structure.

4. The fixing element (1A; 1C) according to any one of the preceding claims, characterized in that, The spring section (12A; 12C) has two wings (120A; 120C) that retract toward the at least one holding section (11).

5. The fixing element (1C) according to any one of the preceding claims, characterized in that... The additional retaining section (13) is rigidly connected to the substrate (10).

6. The fixing element (1A-1C) according to any one of the preceding claims, characterized in that... Stops (110, 111) define the spring travel of the at least one holding section (12A-12C).

7. The fixing element (1A-1C) according to any one of the preceding claims, characterized in that, The at least one retaining section (11) has a centering pin (112) configured to engage with an opening (501) in the surface (50).

8. The fixing element (1A-1C) according to any one of the preceding claims, characterized in that, The fixing elements (1A-1C) comprise metal, particularly zinc alloy, or are made of metal, particularly zinc alloy, especially manufactured in the form of zinc die castings.

9. The fixing element (1A-1C) according to any one of the preceding claims, characterized in that, The at least one retaining section (11) has a snap-fit ​​portion (113) into which the region (21) of the support rail (2) adjacent to the opening (20) can be inserted.

10. The fixing element (1C) according to any one of the preceding claims, characterized in that, A surface (109) is formed on the support rail placement area (101) that is sunken relative to the adjacent area of ​​the support rail placement area (101).

11. A fixing element (1A-1C) for fixing a support rail (2) to a surface (50), particularly according to any one of the preceding claims, comprising: The substrate (10) has a fixing area (100) for fixing the fixing elements (1A-1C) to the surface (50) and a support rail placement area (101) for placing the support rail (2). At least one retaining section (11), the retaining section being configured to pass through an opening (20) in the support rail (2) and surround a region (21) of the support rail (2) adjacent to the opening (20), characterized in that, The tool is provided with at least one tool insert (105) made of a base (10), on which a support surface (106) is provided, and the tool (6) can be supported on the support surface so as to compress the support rail (2) into force engagement with at least one retaining section (11).

12. The fixing element (1A-1C) according to claim 11, characterized in that, The support surface (106) has a step (107).

13. The fixing element (1A-1C) according to claim 11 or 12, characterized in that, It has at least two tool inserts (105) with oppositely oriented support surfaces (106).

14. An apparatus (4) comprising a fixing element (1A-1C) according to any one of the preceding claims and a support rail (2).

15. The apparatus (4) according to claim 14, wherein, The at least one retaining section (11) holds the support rail (2) in a fixed state in a force-fitting manner on the support rail placement area (101) in the region (21) adjacent to the opening (20).

16. In particular, the device (4) according to any one of claims 14 or 15 includes a plurality of fixing elements (1A-1C) according to any one of claims 1 to 13.

17. A switch cabinet (5) having a surface (50), wherein, At least one device (4) according to any one of claims 14 to 16 is fixed to the surface (50).

18. A method for fixing a support rail (2) to a surface (50), comprising the steps of: At least one fixing element (1A-1C) is provided, the fixing element having a base (10) and at least one retaining section (11), the base having a fixing area (100) for fixing the fixing element (1A-1C) to the surface (50) and a support rail placement area (101) for placing the support rail (2), the retaining section being connected to the base (10) via a spring-loaded section (12A-12C) capable of elastic bending. The at least one fixing element (1A-1C) is fixed to the surface (50). Place the support rail (2) onto the support rail placement area (101), wherein at least one retaining segment (11) of the at least one fixing element (1A-1C) passes through the opening (20) in the support rail (2), and The support rail (2) is moved relative to the at least one fixing element (1A-1C) such that the at least one retaining section (11) of the at least one fixing element (1A-1C) forcefully surrounds the support rail (2) in the region (21) adjacent to the opening (20) of the support rail (2).

19. A method for manufacturing a fixing element (1A-1C) for fixing a support rail (2) to a surface (50), characterized by the following steps: A base (10) and at least one retaining section (11) are formed, the base having a fixing area (100) for fixing the fixing element (1A-1C) to the surface (50) and a support rail placement area (101) for placing the support rail (2), the retaining section being configured to pass through an opening (20) in the support rail (2) and surround a region (21) of the support rail (2) adjacent to the opening (20), such that the at least one retaining section (11) is connected to the base (10) by at least one elastically bendable spring section (12A-12C).

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