Fixing device, method, assembly and switch cabinet

Abstract

The invention relates to a fastening device (100) for fastening a support rail (200) to a wall (400), comprising a carrier element (110), at least one fastening element (111), which is rotatably mounted on the carrier element (110), the carrier element (110) being fixable to the support rail (200) by means of the at least one fastening element (111), the at least one fastening element (111) having a head section (114), and the head section (114) being rotatably mounted on the carrier element (110). The invention relates to a mounting device (100) for a bearing rail (200), comprising:-a retaining element (120) which can be fixed to a wall (400) and which can pass through an opening (212) formed on the bearing rail (200) in a first position and can be transferred by a rotational movement of at least one fixing element (111) into a second position in which the fixing element (111) is locked in the opening (212) of the bearing rail (200), and-a retaining element (120) which can be fixed to the wall (400) and which can be held in a mounted state in which the retaining element (120) is fixed to the wall (400). The carrier element (110) is held on the holding element together with a support rail (200) fixed on the carrier element (110) by at least one fixing element (111).

Description

Technical Field

[0001] The invention relates to a fastening device for fastening a support rail to a wall, for example a wall of a switch cabinet, and also to a method for fastening a support rail to a wall by means of such a fastening device, as well as to an assembly and a switch cabinet having such a fastening device. Background Art

[0002] The support rail can be designed as an elongated U-shaped or C-shaped profile and is used to accommodate a plurality of terminal blocks, in particular terminal boxes. The terminal blocks can be installed in the switch cabinet via the support rail. The support rail usually has a plurality of openings, through which the support rail can be fixed to the wall of the switch cabinet by means of screws. Since the screws can no longer be touched when the support rail is loaded with terminal blocks, the support rail must first be fixed in the switch cabinet by means of screws, and the terminal blocks can only be loaded on the support rail after the support rail is fixed or installed on the wall of the switch cabinet. Therefore, pre-mass-produced support rails equipped with terminal blocks cannot be installed in the switch cabinet. As a result, the automated assembly of the support rails is also not possible. Therefore, the installation cost of equipping the switch cabinet with terminal blocks and support rails is very high. Summary of the invention

[0003] The object of the invention is to provide a fastening device, a method, an assembly and a switch cabinet in which the installation outlay can be reduced and in particular pre-series-produced support rails with connected terminals can be fastened to a wall.

[0004] According to the invention, this object is achieved by means of the features of the independent claim. Advantageous embodiments and advantageous developments of the invention are specified in the dependent claims.

[0005] The fixing device according to the invention comprises a carrier element and at least one fixing element which is rotatably mounted on the carrier element, wherein the carrier element can be fixed to a support rail by means of the at least one fixing element, wherein the at least one fixing element comprises a head section which can be passed through an opening formed in the support rail in a first position and which can be transferred into a second position by means of a rotational movement of the at least one fixing element, in which second position the fixing element is locked in the opening of the support rail. Furthermore, the fixing device comprises a retaining element which can be fixed to a wall, and on which the carrier element is held together with the support rail fixed to the carrier element by means of the at least one fixing element in the mounted state.

[0006] In order to fix the support rail to a wall, in particular a wall of a switch cabinet, a fixing device is now provided, on which the support rail is first fixed before the support rail is installed and fixed in the switch cabinet by means of the fixing device. Therefore, the support rail is no longer directly fixed to the wall, but the support rail is indirectly fixed to the wall by the fixing device. The fixing device is composed of a plurality of components. The fixing device has a carrier element, which is first fixed to the support rail. When the support rail is already equipped with a terminal, the carrier element can be fixed to the support rail, so that the pre-mass-produced support rail can be connected to the fixing device here. The carrier element can be constructed in a plate-like manner, for example. The carrier element can be fixed on the bottom side of the support rail, so that the carrier element is not fixed on the top side of the support rail, where the terminal is fixed. One or more fixing elements can be rotatably supported on the carrier element. An opening can be constructed on the carrier element, and the fixing element can be rotatably supported in the opening. In order to fix the carrier element on the support rail, each fixing element can pass through an opening constructed on the support rail. Since the fixing element can pass through the opening on the supporting rail from the bottom side of the supporting rail, the fixing element can pass through the opening when the supporting rail is already equipped with a terminal. Inside the opening of the supporting rail, the fixing element can be rotated so that the fixing element can be locked on the supporting rail, wherein, in the locked position, the carrier element is held and fixed on the supporting rail. The fixing elements each have a head section, with which the fixing element can pass through the opening on the supporting rail. Through the rotational movement of the fixing element, the head section of the fixing element can be transferred to a first position and a second position, in which the head section can pass through the opening in the first position and in which the head section is locked on the supporting rail in the second position. The openings on the supporting rail are preferably configured to be elongated, so that their length is greater than the width. The head section of the fixing element can also have an elongated shape, so that the head section also has a length greater than the width. Therefore, the shape or contour of the head section of the fixing element matches the shape or contour of the opening on the supporting rail. In the first position, when the head section passes through the opening on the supporting rail, the head section preferably extends parallel to the length of the opening with its length. In the second position, the head section is preferably rotated in such a way that its length extends transversely to the length of the opening, so that the fixing element can be locked on the support rail. In this mounted state of the carrier element on the support rail, the carrier element can be fixed together with the support rail fixed thereto, which can be provided with connecting terminals, to a retaining element already mounted on the wall. By means of such a fixing device, the support rail already provided with connecting terminals can be fixed to the wall quickly and simply and thus with little assembly effort.

[0007] In order to simplify the installation of the carrier element on the holding element, the holding element can have a receiving cavity into which the carrier element can be pushed. By pushing the carrier element into the receiving cavity of the holding element, the carrier element can be fixed on the holding element without other auxiliary devices. Therefore, the carrier element can be installed on the holding element by pure axial movement. The holding element can have guide devices, in particular guide grooves, by which the carrier element can be guided in a controlled manner when pushed into the receiving cavity of the holding element. One or more guide ribs can be configured on the carrier element, which guide ribs can engage in the guide grooves configured on the holding element. It is also possible to configure guide ribs on the holding element, which guide ribs can be embedded in the guide grooves configured on the carrier element.

[0008] In order to form a defined first position and a second position of the head section, a stop for limiting the rotational movement of the fastening element can be formed on the carrier element. The stop can preferably be formed on the carrier element in such a way that the rotational movement of the fastening element is limited to a rotational movement of an angle α of approximately 90°. The stop can provide the user with clear feedback when the head section has reached the second position, in particular, and thus a reliable lock is formed between the fastening element and the support rail.

[0009] In addition, the fixing device can have at least one screw element, which can cooperate with the at least one fixing element in such a way that the head section of the at least one fixing element can be transferred into the first position and into the second position by the rotational movement of the at least one screw element. The rotational movement of the fixing element can be generated by the rotational movement of the screw element. The rotational movement of the screw element can be transmitted to the fixing element. The user can thus rotate the screw element and thus also rotate the fixing element. This can prevent the user from directly operating the fixing element. Each fixing element preferably corresponds to a screw element. The screw element can be placed in a rotational movement by the user using a screwdriver, whereby the fixing element can also be placed in a rotational movement by the rotational movement of the screw element.

[0010] The at least one fixing element may include a rod section connected to the head section, the rod section may have a threaded hole, and the at least one screw element may engage in the threaded hole. Through the rod section and the threaded hole processed in the rod section, the screw element can engage in the fixing element and be effectively connected with the fixing element.

[0011] The threaded hole in the shank section of the fixing element can be configured so long that after reaching the second position of the head section, the at least one screw element can be screwed further into the threaded hole on the shank section of the at least one fixing element, so that the carrier element can be tensioned together with the at least one fixing element on the support rail. The tensioning scheme can achieve tolerance compensation. During tensioning, it can be achieved that the support rail rests reliably and firmly on the carrier element in the installed state. After reaching the second position of the head section of the fixing element, when the screw element is screwed further into the shank section, the fixing element can be pulled closer to the carrier element with its head section, thereby also pulling the support rail pulled with the head section closer to the carrier element, and thereby the carrier element can be tensioned on the support rail.

[0012] In order to achieve a secure and fixed positioning of the carrier element on the retaining element, a latching element can be formed on the carrier element, which latching element can latch with a counter-latching element formed on the retaining element in the installed state. The latching element can be designed, for example, in the form of a latching tab or a latching nose, which can interact with a counter-latching element designed as an undercut or an opening. It is also possible to form the counter-latching element on the carrier element and the latching element on the retaining element.

[0013] Furthermore, the object according to the invention is achieved by means of a method for fixing a supporting rail to a wall by means of a fixing device designed and improved as described above, in which at least one fixing element rotatably supported on a carrier element is guided with its head section through an opening formed on the supporting rail in its first position, the at least one fixing element is rotated so that the head section passing through the opening is transferred to a second position, in which the at least one fixing element is locked in the opening of the supporting rail, and the carrier element is subsequently introduced together with the supporting rail held on the carrier element into a retaining element fixed to the wall.

[0014] Furthermore, the object according to the invention is achieved by means of an assembly having a support rail and at least one fastening device designed and improved as described above, wherein the support rail is fastened to the at least one fastening device in order to fasten the support rail to a wall. Preferably, a plurality of such fastening devices can be arranged along the length of the support rail, so that the support rail can be fastened to the wall with high stability and high reliability. The fastening devices arranged along the length of the support rail are preferably arranged at intervals from one another.

[0015] Furthermore, the object according to the invention is achieved by means of a switch cabinet having at least one component designed and developed as described above, which is fastened to a wall of the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in detail below based on preferred embodiments with reference to the accompanying drawings.

[0017] The accompanying drawings show:

[0018] Figure 1 A schematic diagram showing an assembly according to the invention during installation,

[0019] Figure 2 A schematic diagram showing another assembly according to the invention during installation,

[0020] Figure 3 Shows Figure 2 A schematic diagram of the assembly shown, wherein the head section of the fixing element is in a first position,

[0021] Figure 4 Shows Figure 3 A schematic diagram of the assembly shown in FIG. 1 , looking down at the back side of the assembly,

[0022] Figure 5 Shown in Figure 3 and Figure 4 A schematic cross-sectional view of the components shown in FIG.

[0023] Figure 6 Shows Figure 2 Schematic diagram of the assembly shown, wherein the head section of the fixing element is in the second position,

[0024] Figure 7 Shows Figure 6 A schematic diagram of the assembly shown in FIG. 1 , looking down at the back side of the assembly,

[0025] Figure 8 Shown in Figure 6 and Figure 7 A schematic cross-sectional view of the components shown in FIG.

[0026] Fig. 9 Shows Figure 6 Schematic diagram of the assembly shown in when installed in a retaining element of the assembly,

[0027] Fig.10 shows a schematic diagram of an assembly with a carrier element mounted in a retaining element, and

[0028] Fig.11 Shown is a wall mounted Fig.10 A schematic diagram of the components is shown in FIG. DETAILED DESCRIPTION

[0029] Figure 1 and Figure 2An assembly 300 is shown, the carrier element 110 of the fixing device 100 of which is to be mounted on a support rail 200. The fixing device 100 comprises, in addition to the carrier element 110, at least one fixing element 111, wherein the carrier element 110 is fixed to the support rail 200 via the fixing element 111. Figure 1 In the illustrated construction, a fixing element 111 is provided. Figure 2 In the illustrated configuration, two fixing elements 111 are provided.

[0030] The carrier element 110 is plate-shaped. For each fixing element 111, the carrier element 110 has an opening 112, in which the fixing element 111 is rotatably supported on the carrier element 110. In order to limit the rotational movement of the fixing element 111, a stop 113 is respectively formed on the carrier element 110. The stop 113 is here respectively formed in the region of the opening 112, so that such a stop 113 is formed on each opening 112.

[0031] In the embodiment shown here, the support rail 200 is designed in the form of a U-shaped profile. The support rail 200 has a top side 210, on which a plurality of connecting terminals can be clamped side by side. Opposite the top side 210, the support rail 200 has a bottom side 211. The carrier element 110 of the fixing device 100 is fixed to the support rail 200 at the bottom side 211.

[0032] The support rail 200 has a plurality of openings 212 arranged one behind the other along its length. The fastening device 100 is fastened to the support rail 200 via these openings 212. The openings 212 are elongated, so that their length is greater than their width.

[0033] Each fastening element 111 has a head section 114, via which the fastening element 111 can be passed through one of the openings 212 of the supporting rail 200. The head section 114 is designed to be as elongated as the opening 212 in the supporting rail 200.

[0034] exist Figure 1 and Figure 2 In the drawings, the head sections 114 of the fastening elements 111 are each located at a position in which the length of the head section 114 extends parallel to the length of the opening 212 of the support rail 200 , so that the fastening elements 111 can pass through the opening 212 with their head sections 114 .

[0035] Figure 3 A state is shown in which the fastening element 111 extends with its head section 114 through one of the openings 212 in the supporting rail 200 . In this state, the carrier element 110 is positioned on the underside 211 of the supporting rail 200 .

[0036] Figure 4 Shows Figure 3 , wherein it can be seen here that screw elements 115 are arranged on the carrier element 110 , which interact with the fixing elements 111 . The screw elements 115 are inserted into the openings 112 on the carrier element 110 , just like the fixing elements 111 .

[0037] As in Figure 5 As can be seen in the sectional view of , each fixing element 111 is assigned a screw element 115. The fixing elements 111 each have a shaft section 116 which is integrally connected to a head section 114. With the shaft section 116, the fixing element 111 extends into an opening 112 on the carrier element 110, while the head section 114 is preferably positioned outside the opening 112. A threaded hole 117 is formed on the shaft section 116, into which the screw element 115 engages and is guided.

[0038] When the screw element 115 is rotated, the actuating element 111 follows the rotational movement, so that the head section 114 of the fixing element 111 can be moved from the screw element 115 to the head section 114 of the fixing element 111. Figures 1 to 5 The first position shown in FIG. Figures 6 to 11 and can be returned.

[0039] The screw element 115 can be manipulated by the user with the aid of a screwdriver. The manipulation of the screw element 115 is performed on the back side 118 of the carrier element 110. The head section 114 of the manipulation element 111 is located at the front side 119 of the carrier element 110 opposite to the back side 118. The carrier element 110 is in the installed state with its front side 119 against the bottom side 211 of the support rail 200. The opening 112 on the carrier element 110 extends from the front side 119 of the carrier element 110 to the back side 118. The opening 112 is therefore configured as a through hole on the carrier element 110. The screw element 115 is inserted and installed into the opening 112 from the back side 118 of the carrier element 110. The fixing element 111 is inserted and installed into the opening 112 from the front side 119 of the carrier element 110.

[0040] exist Figure 6 In the view shown, the fastening element 111 is rotated by means of the screw element 115 in such a way that the head section 114 of the fastening element 111 is in the second position, so that the fastening element 111 is locked in the opening 212 of the support rail 200. In this position, the head section 114 of the fastening element 111 extends with its length transversely to the length of the opening 212 of the support rail 200. In order to transfer the head section 114 from the first position to the second position, the head section 114 is rotated by an angle α of 90° until the fastening element 111 strikes the stop 113 and cannot be rotated further.

[0041] The threaded hole 117 in the shank section 116 of the fixing element 111 is designed to be so long that after reaching the second position of the head section 114, the screw element 115 can be screwed further into the threaded hole 117 on the shank section 115 of the fixing element 111, so that the carrier element 110 together with the fixing element 111 can be tensioned on the support rail 200, such as in particular Figure 8 In this tensioned state, the support rail 200 with its bottom side 211 flatly abuts against the front side 119 of the carrier element 110, and the head section 114 abuts against the top side 210 of the support rail 200 and presses the support rail 200 in the direction of the carrier element 110.

[0042] Figure 7 A top view of the screwed-in screw element 115 is shown.

[0043] If the component is in Figures 6 to 8 In the state shown, the carrier element 110 can be inserted into the holding element 120 of the fixing device 100 together with the support rail 200 mounted thereon. The holding element 120 has a receiving cavity 121 into which the carrier element 110 can be pushed by a purely axial movement (as shown by the arrow). Fig.10 Shown in.

[0044] The holding element 120 has two opposite guide grooves 122 in the region of its receiving space 121, which can form a guide device for the carrier element 110. The carrier element 110 has a guide rib 124 on two opposite lateral sides 123, which can respectively engage in one of the two guide grooves 122, such as in particular Fig.10 Visible in.

[0045] Furthermore, the holding element 120 has two guide grooves 125 in the region of its receiving space 121, in which a bulge 126 formed on the back side 118 of the carrier element 110 can be guided, on which bulge one of the screw elements 115 is arranged in each case. The guide grooves 122, 125 can form a targeted and positionally accurate guidance of the carrier element 110 on the holding element 120.

[0046] Furthermore, a latching element 127 is formed on the carrier element 110, which latching element 127 is formed on the carrier element 110. Fig.10 In the mounted state shown, the latch is locked in a counter-latching element 128 formed on the holding element 120. The latching element 127 is designed in the form of a latching tab. The counter-latching element 128 is formed in the form of an opening on the holding element 120, so that in the mounted state the latching tab sinks into the opening, as in Fig.10 Visible in.

[0047] The retaining element 120 can be fixed to the wall 400, such as in Fig.11 When the carrier element 110 together with the support rail 200 on which the connecting terminal can be snapped into the holding element 120, the holding element 120 is preferably already fixed to the wall 400. The wall 400 can be, for example, the wall of a switch cabinet.

[0048] The holding element 120 can be fixed to the wall 400, for example, by a force-fitting or material-fitting connection. For example, the holding element 120 can be screwed or adhesively bonded to the wall 400.

[0049] Description of Reference Numerals

[0050] 100 Fixtures

[0051] 110 carrier element

[0052] 111 Fixing elements

[0053] 112 Opening

[0054] 113 Stop

[0055] 114 Header section

[0056] 115 Screw element

[0057] 116 Rod Section

[0058] 117 threaded hole

[0059] 118 back

[0060] 119 front

[0061] 120 Holding element

[0062] 121 Accommodation chamber

[0063] 122 Guide groove

[0064] 123 lateral side

[0065] 124 Guide ribs

[0066] 125 Guide groove

[0067] 126 Arch

[0068] 127 Locking element

[0069] 128 Mating locking elements

[0070] 200 Support rail

[0071] 210 Top side

[0072] 211 bottom side

[0073] 212 Opening

[0074] 300 Components

[0075] 400 wall

[0076] α Angle

Claims

1. A fixing device (100) for fixing a support rail (200) on a wall (400), the fixing device comprising: - a carrier element (110), - a plurality of fixing elements (111) which are rotatably mounted on the carrier element (110), wherein the carrier element (110) can be fixed to the support rail (200) by means of the fixing elements (111), wherein the fixing elements (111) have a head section (114) which in a first position can be passed through an opening (212) formed in the support rail (200) and which can be transferred into a second position by means of a rotational movement of the fixing elements (111), in which the fixing elements (111) are locked in the opening (212) of the support rail (200), and A retaining element (120) which can be fastened to the wall (400) and to which, in the installed state, the carrier element (110) is held together with a support rail (200) fastened to the carrier element (110) via the fastening element (111).

2. The fixing device (100) according to claim 1, characterized in that: The retaining element (120) has a receiving cavity (121) into which the carrier element (110) can be inserted.

3. The fixing device (100) according to claim 1 or 2, characterized in that: A stop (113) is formed on the carrier element (110) for limiting the rotational movement of the fastening element (111).

4. The fixing device (100) according to any one of claims 1 to 3, characterized in that: At least one screw element (115) is provided, which interacts with the fixing element (111) so that a head section (114) of the fixing element (111) can be transferred into a first position and a second position by a rotational movement of the at least one screw element (115).

5. The fixing device (100) according to claim 4, characterized in that: The fastening element (111) has a shaft section (116) connected to the head section (114), wherein the shaft section (116) has a threaded hole (117) in which the at least one screw element (115) engages.

6. The fixing device (100) according to claim 5, characterized in that: The length of the threaded hole (117) is such that after reaching the second position of the head section (114), the at least one screw element (115) can be further screwed into the threaded hole (117) on the rod section (116) of the fixing element (111) in order to tension the carrier element (110) together with the fixing element (111) on the supporting rail (110).

7. The fixing device (100) according to any one of claims 1 to 6, characterized in that: A latching element (127) is formed on the carrier element (110) and, in a mounted state, latches with a counter-latching element (128) formed on the retaining element (120).

8. Method for fastening a support rail (200) to a wall (400) by means of a fastening device (100) according to any one of claims 1 to 7, wherein: A plurality of fixing elements (111) rotatably supported on a carrier element (110) are passed with their head sections (114) in a first position through an opening (212) constructed on a support rail (200), the fixing elements (111) are rotated so that the head sections (114) passing through the opening (212) are transferred to a second position, in which the fixing elements (111) are locked in the opening (212) of the support rail (200), and the carrier element (110) is subsequently introduced together with the support rail (200) held on the carrier element (110) into a retaining element (120) fixed to a wall (400).

9. A component (300) comprising a support rail (200) and at least one fixing device (100) constructed according to any one of claims 1 to 7, wherein the support rail (200) is fixed to the at least one fixing device (100) in order to fix the support rail (200) to a wall (400).

10. A switch cabinet comprising at least one component (300) according to claim 9, which is fastened to a wall (400) of the switch cabinet.

Images