Spring element, devices for attaching a mounting rail to a substructure and system with one of the devices

Abstract

Spring element (10) for pre-tensioning a locking bolt (12) of a device (14) for fastening a mounting rail (16) to a substructure, wherein the spring element (10) has a material sheet (18) having a first leg (20) and a second leg (22), each having a recess (24) for the locking bolt (12) to pass through, and wherein the spring element (10) is arranged such that the first leg (20) and the second leg (22) are resiliently movable towards each other.

Description

Background of the invention

[0001] The invention relates to a spring element for pre-tensioning a locking bolt of a device for fastening a mounting rail to a substructure, devices for fastening a mounting rail to a substructure and a system with one of the devices.

[0002] Such spring elements are known from the prior art. For example, EP 2 425 188 B1 discloses a coil spring as part of a device for attaching a support rail to a roof hook. The device comprises a retaining element having a bearing surface for the underside of the support rail and a gripping projection extending from the bearing surface and designed to engage behind a retaining edge of the support rail. In a pre-assembled state, the coil spring pushes the retaining element away from an adjustment section of the roof hook, creating a gap between the retaining element and the adjustment section. The coil spring is supported at one end by the adjustment section and at the other end by the retaining element and is penetrated by a screw. The screw extends through the adjustment section and through an opening in the retaining element.

[0003] A problem with the known coil spring, however, is that it is relatively difficult to handle, especially during the manufacture of the known device. During the manufacturing process, the coil spring must first be placed onto the screw using at least two fingers of a gripping device or a human hand, and then pre-tensioned in order to engage a square nut, which is securely fixed to the holding element, with the screw's thread. Gripping and pre-tensioning the coil spring using the gripping device or a human hand is relatively difficult. Object of the invention

[0004] The object of the invention is to provide a spring element for pre-tensioning a locking bolt of a device for fastening a mounting rail to a substructure, wherein the spring element is improved with regard to its handling. Description of the invention

[0005] This problem is solved according to the invention by the spring element with the features according to claim 1, the device with the features according to claim 7, the device with the features according to claim 12 and a system with the features according to claim 15.

[0006] According to the invention, a spring element is provided. The spring element serves to pre-tension a locking bolt of a device for fastening a mounting rail to a substructure. The spring element comprises a material sheet. The material sheet has a first leg and a second leg. The first leg and the second leg each have a recess for the locking bolt to pass through. The spring element is designed such that the first leg and the second leg, particularly from their rest position or a relaxed position of the spring element, can be moved resiliently towards each other.

[0007] The fact that the spring element according to the invention comprises a sheet of material with a first leg and a second leg improves its handling, particularly during the manufacture of the device in which it is used. The two legs of the spring element can be easily gripped at their free ends using two fingers of a human hand or a gripping device, making it especially easy to pre-tension the spring element. This improves the handling of the spring element.

[0008] In one embodiment, the substructure is designed as a roof substructure, in particular for a sloping roof.

[0009] In a further embodiment, it is provided that the first leg and the second leg of the spring element can be moved towards each other, in particular from their rest or starting position or a relaxed position of the spring element, by means of a human hand and / or without tools.

[0010] In a further embodiment, the material sheet has a third leg at the end of the first leg facing away from the second leg, wherein the angle between the first leg and the second leg is greater than any further angle between the second leg and the third leg, and in particular, wherein the recess of the first leg extends into the third leg. This provides a bearing surface by means of the third leg for at least partial contact of a nut securing the fixing bolt to the fastening part.

[0011] In a further embodiment, the recesses for laterally inserting the locking bolt merge into one another. This allows the spring element to be pre-tensioned onto the nut with the locking bolt even after the nut has been engaged with the threads.

[0012] In a further embodiment, the material sheet has a fourth leg at the end of the second leg facing away from the first leg, and this fourth leg extends away from the first leg. Alternatively or additionally, the second leg may have a lateral extension with a projection at its free end that extends away from the first leg. The fourth leg or the projection allows the spring element to be positioned against the fastening part in a rotationally secure manner. The fourth leg rests against the end face of the fastening part, and / or the projection rests against a narrow side of the fastening part. The fourth leg can extend perpendicularly away from the second leg, and / or the projection can extend perpendicularly away from the extension of the second leg.

[0013] In a further embodiment, at least one recess in the material sheet extends from the first leg to the second leg. This allows the spring stiffness of the spring element to be adjusted for a given material thickness.

[0014] In another embodiment, it is provided that the material sheet has spring steel, in particular consists of spring steel.

[0015] In a further embodiment, the material sheet is provided to have a material thickness of at least 0.2 mm and / or at most 0.8 mm, preferably at least 0.3 mm and / or at most 0.7 mm, and particularly preferably at least 0.4 mm and / or at most 0.6 mm. In particular, the material sheet has a material thickness of approximately 0.5 mm.

[0016] In another embodiment, the spring element is designed as a coil spring.

[0017] The invention also relates to a device for attaching a mounting rail to a substructure, in particular a roof substructure, especially a pitched roof. The device comprises a first connecting element and a fastening element. The first connecting element serves to connect the fastening element to the mounting rail. The first connecting element is arranged at one end of the fastening element. The first connecting element comprises a spring element and a locking bolt. The locking bolt extends through an opening in one end of the fastening element. The locking bolt has a rear engagement element for engaging the mounting rail. The locking bolt is biased towards the fastening element by means of the spring element via its rear engagement element.

[0018] Because the locking bolt with its rear gripping element is pre-tensioned towards the fastening part by means of the spring element, an angle element and / or the mounting rail into which the locking bolt engages, which passes through the locking bolt, is held in position on the fastening part, even if the locking bolt is not located at the lower end of a slot in the fastening part.

[0019] The term "below" refers to the device in its state mounted on the substructure.

[0020] In one embodiment, it is provided that the rear gripping element is arranged on one broad side of one end region of the fastening part, that the spring element is arranged on the other broad side of one end region of the fastening part, and that one end region is provided on its broad side facing the rear gripping element with engagement elements for engaging with engagement elements of the angle element and / or the mounting rail.

[0021] In a further embodiment, the fastening element, particularly in the form of a roof hook, is designed as a band-shaped retaining bracket with one broad side, the opposite broad side, and two narrow sides. The rear gripping element, pre-tensioned by the spring element, can be pre-tensioned towards one broad side to engage the mounting rail. This side is accordingly defined as the mounting side. The spring element can engage the other broad side of the fastening element.

[0022] The retaining bracket can have a bulge to guide it around roofing elements mounted on the substructure. The retaining bracket can bulge towards its opposite broad side. This bulge can therefore be positioned towards the broad side of the retaining bracket where the spring element engages.

[0023] In another embodiment, the rear gripping element of the locking bolt is designed as a hammerhead.

[0024] In a further embodiment, an angled element with two legs is provided for attaching the mounting rail. In particular, one leg of the two legs has an opening through which the locking bolt of the first connecting device passes. The angled element makes it particularly easy to align and position the mounting rail, especially in relation to the rear gripping element of the locking bolt. The two legs of the angled element can be oriented perpendicular to each other.

[0025] In a further embodiment, one leg of the angle element has a recess in which the opening of that leg is provided and in which the rear gripping element of the locking bolt can be arranged. The recess can extend in a straight line from one side of the leg to the other. The rear gripping element, in a release position, can be arranged in the recess, allowing the mounting rail to come into contact with the leg outside the recess. This simplifies the alignment and positioning of the mounting rail.

[0026] In a further embodiment, the locking bolt, in particular the rear gripping element, is rotatable about its longitudinal axis between a release position and a rear gripping position. A 90-degree rotation can move the locking bolt, in particular the rear gripping element, from its release position to its rear gripping position and vice versa. In the release position, the rear gripping element can be oriented transversely to the longitudinal extent of one end region of the fastening part. In the rear gripping position, the rear gripping element can be oriented in the direction of the longitudinal extent of one end region of the fastening part.

[0027] In a further embodiment, a second connecting device is provided for connecting the fastening part to the substructure, wherein the second connecting device is arranged at the other end region of the fastening part and has a further locking bolt which extends through a further opening in the other end region of the fastening part and which is secured to the fastening part by means of a further rear gripping element.

[0028] In a further embodiment, it is provided that the additional rear gripping element is designed as, in particular, a square-shaped screw nut.

[0029] In a further embodiment, it is provided that the further rear gripping element, in particular in a rotationally secure manner, is inserted into a groove of a base profile rail which has a base plate which has at least one through-opening for a screw to pass through, in particular wherein a contact surface having the groove is inclined to the base plate for contact with the other end area of ​​the fastening part.

[0030] In a further embodiment, one end region is provided on its side facing the rear gripping element with engagement elements for engaging with engagement elements of the angle element and / or the mounting rail. Alternatively or additionally, the other end region may be provided on its side facing the other rear gripping element with engagement elements for engaging with engagement elements of the contact surface of the base profile rail. The engagement elements of one end region may be located on one broad side of the fastening part and / or the engagement elements of the other end region may be located on the opposite broad side of the fastening part.

[0031] In a further embodiment, one leg of the angle element is provided on its side facing the fastening part with engagement elements corresponding to the engagement elements of one end region. Alternatively or additionally, the contact surface of the base profile rail is provided with engagement elements corresponding to the engagement elements of the other end region.

[0032] The interlocking engagement elements of two adjacent components increase the static friction between these components. These engagement elements can be in the form of a toothed connection.

[0033] In another embodiment, the opening in one end region of the fastening part is designed as an elongated hole. This allows the locking bolt, optionally together with the angle element and / or the mounting rail, to be positioned along the elongated hole.

[0034] In a further embodiment, a protective device is provided that protects the spring element from environmental influences, at least when the nut is fully screwed onto the locking bolt, and / or serves to transmit the force of the nut when tightened. The protective device can also prevent misalignment of the angle element. Misalignment of the angle element can occur, for example, if one leg of the angle element is pivoted relative to one end of the fastening part. "Fully screwed onto the locking bolt" means that the nut is screwed on to such an extent that it comes into contact with the protective device while fixing the angle element and / or the mounting rail.

[0035] In another embodiment, it is provided that the angle element is formed in one piece with the spring element and / or the protective device.

[0036] In another embodiment, the opening in the other end area of ​​the fastening part is designed as an elongated hole.

[0037] The respective elongated hole can extend in the longitudinal direction of the fastening part.

[0038] The invention also relates to a device manufactured according to a method comprising the following steps: - Providing a fastening part with an opening in one end region, a fixing bolt with a rear gripping element for engaging the mounting rail and a spring element, wherein the spring element may be the aforementioned spring element; - Passing the locking bolt through the opening of the fastening part; and - Pre-tensioning of the locking bolt with its rear gripping element in the direction of the fastening part by means of the spring element, which is supported on the one hand indirectly or directly on the fastening part and on the other hand indirectly or directly on the locking bolt.

[0039] Because the locking bolt with its rear gripping element is pre-tensioned towards the fastening part by means of the spring element, the angle element and / or the mounting rail, which is penetrated by the locking bolt and supports the mounting rail, and into which the locking bolt engages, can be releasably locked to the fastening part along the elongated hole, even if the locking bolt is not located at the lower end of the elongated hole in the fastening part.

[0040] In a preferred embodiment, after the locking bolt has been inserted, the spring element is first placed onto the locking bolt by passing the locking bolt through recesses in the spring element or by passing the spring element through a channel. Subsequently, an internal thread of a nut is engaged with an external thread of the locking bolt at its free end, thereby pre-tensioning the locking bolt by means of the spring element. This allows the spring element to be positioned and pre-tensioned on the locking bolt before the nut engages with the locking bolt.

[0041] In a preferred embodiment, after the locking bolt has been inserted, an internal thread of a nut is first engaged with an external thread of the locking bolt at its free end. Subsequently, the spring element is placed on the locking bolt by laterally inserting the locking bolt into overlapping recesses in the spring element, thereby pre-tensioning the locking bolt. This allows the spring element to be placed onto the locking bolt in a pre-tensioned position after the nut has been engaged with the locking bolt.

[0042] Furthermore, the invention relates to a system with the device, wherein the system is manufactured according to a method comprising the following steps: - Providing the device and the mounting rail, which has a groove that is undercut on at least one side; - Aligning and positioning the mounting rail with an opening of the groove centrally in front of the rear gripping element arranged in a release position or by inserting the rear gripping element arranged in the release position into the opening of the groove; - Actuating the locking bolt against its preload and rotating the locking bolt such that the rear-engaging element, arranged in a rear-engaging position, engages at least one groove projection of the groove; and - Securing the mounting rail to the fastening part by, in particular, further or completely tightening the nut onto the fixing bolt.

[0043] By actuating the locking bolt against its preload and turning the locking bolt, the mounting rail can be connected to the device particularly easily, whereby the mounting rail is held in position after the corresponding connection by the spring force of the spring element on the fastening part, without the screw nut having been fully screwed onto the locking bolt.

[0044] In one embodiment, the locking bolt is positioned in the elongated hole of the mounting element by actuating it against its preload before aligning and positioning the mounting rail. Alternatively or additionally, after actuating and rotating the locking bolt, it can be positioned in the elongated hole of the mounting element by actuating it against its preload. This allows the locking bolt, along with the angle bracket and / or the mounting rail, to be positioned along the elongated hole of the mounting element without the nut being fully tightened on the bolt. This makes it particularly easy to align and position the mounting rail relative to multiple mounting elements.

[0045] In another embodiment, the mounting rail is aligned and positioned by contacting at least one leg of the angle bracket. Alternatively, the mounting rail can be aligned and positioned by contacting one end of the fastening element. The angle bracket supporting the mounting rail makes it particularly easy to align and position the mounting rail relative to the fastening element.

[0046] In the device's delivered state, particularly during setup, the nut is initially engaged with the thread of the locking bolt at its free end, with an additional threaded section provided for further tightening of the nut onto the locking bolt. After the mounting rail is secured, the nut is, relative to the device's delivered state, at least further screwed onto the locking bolt, and in particular, completely screwed onto the locking bolt.

[0047] Further advantages of the invention will become apparent from the description, the claims, and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in combination in any suitable way according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples illustrating the invention. Detailed description of the invention and drawing Fig. Figures 1a-1g show a first to seventh embodiment of a spring element according to the invention in a perspective oblique view from above. Fig. Figure 2 shows a perspective oblique view from above of a device for attaching a mounting rail to a substructure, with the spring element made of Fig. 1c. Fig. Figure 3 shows a side view of the device. Fig. 2, wherein a rear gripping element arranged in its release position for engaging in a mounting rail by means of the spring element made of Fig. 1c is pre-tensioned in the direction of a fastening part of the device. Fig. Figure 4 shows a side view of the device. Fig. 2, wherein the rear gripping element, arranged in its rear grip position, engages an undercut groove of the mounting rail and, pre-tensioned by means of the spring element, holds the mounting rail in position on the fastening part. Fig. Figure 5 shows the device in a perspective oblique view from above. Fig. 2, wherein an additional angle element is provided as an alignment and positioning aid for the mounting rail. Fig. Figure 6 shows a side view of the device. Fig. 5, wherein the rear gripping element arranged in its release position holds the angle element in position on the fastening part by means of the spring element due to its preload in the direction of the fastening part. Fig. Figure 7 shows a side view of the device. Fig. 5, wherein the rear gripping element arranged in its rear grip position engages an undercut groove of the mounting rail and, due to its preload by means of the spring element in the direction of the fastening part, holds the angle element and the mounting rail abutting the angle element in position on the fastening part. Fig. Figure 8 shows a perspective exploded view of a part of a device according to the invention with a spring element in the form of a spiral spring. Fig. Figure 9 shows a side view of the device. Fig. 8, wherein the rear gripping element, arranged in its rear grip position, engages an undercut groove of the mounting rail and holds the angle element and the mounting rail adjacent to the angle element in position on the fastening part. Fig. Figure 10 shows, in the form of a flowchart, a method for fixing the mounting rail to the device. Fig. Figure 11 shows different positions of the mounting rail and the angle-free device. Fig. 2, Fig. 3 during the process of attaching the mounting rail to this device. Fig. Figures 12a and 12b show different positions of the mounting rail and the device equipped with an angle element. Fig. 5, Fig. 6 during the process of attaching the mounting rail to this device. Fig. Figure 13 shows, in the form of a flowchart, a method for manufacturing a device for attaching a mounting rail to a substructure. Fig. 14a,b shows assembly steps for manufacturing the device from Fig. 8, Fig. 9.

[0048] Fig. Figures 1a-1g show a first to seventh embodiment of the spring element 10 according to the invention. In an eighth embodiment, the spring element 10 is designed as a coil spring 11.

[0049] The spring element 10 serves to pre-tension a locking bolt 12. The locking bolt 12 is part of a device 14 for fastening a mounting rail 16 to a substructure (not shown), in particular a roof substructure, especially a pitched roof.

[0050] In the first to seventh embodiments, the spring element 10 is configured as follows: The spring element 10 has an angled material sheet 18. In particular, the spring element 10 consists of the material sheet 18. The material sheet 18 has a first leg 20 and a second leg 22. The first leg 20 and the second leg 22 each have a recess 24 for the locking bolt 12 to pass through. The spring element 10 is designed such that the first leg 20 and the second leg 22 can be moved towards each other from a rest position or relaxed position, in particular without tools and / or by hand.

[0051] In the first embodiment according to Fig. 1a The material sheet 18 transitions into a third leg 26 at an end of the first leg 20 that faces away from the second leg 22. The angle between the first leg 20 and the second leg 22 is larger than any further angle between the second leg 22 and the third leg 26. The recess 24 of the first leg 20 extends into the third leg 26. The material sheet 18 also transitions into a fourth leg 28 at an end of the second leg 22 that faces away from the first leg 20. The fourth leg 28 points away from the first leg 20. The second leg 22 and the fourth leg 28 are perpendicular to each other.

[0052] In the second embodiment according to Fig. 1b The material sheet 18 transitions into a third leg 26 at the end of the first leg 20 facing away from the second leg 22. An angle between the first leg 20 and the second leg 22 is larger than another angle between the second leg 22 and the third leg 26. The recess 24 of the first leg 20 extends into the third leg 26. In addition, the material sheet 18 has two spaced-apart recesses 30, each extending from the first leg 20 into the second leg 22.

[0053] In the third embodiment according to Fig. 1c The material sheet 18 transitions into a third leg 26 at an end of the first leg 20 facing away from the second leg 22. The angle between the first leg 20 and the second leg 22 is larger than any further angle between the second leg 22 and the third leg 26. The recess 24 of the first leg 20 extends into the third leg 26. The material sheet 18 further transitions into a fourth leg 28 at an end of the second leg 22 facing away from the first leg 20. The fourth leg 28 is directed away from the first leg 20. The second leg 22 and the fourth leg 28 can be perpendicular to each other. The material sheet 18 also has two recesses 30, spaced apart from each other, extending from the first leg 20 into the second leg 22.

[0054] In the fourth embodiment according to Fig. 1d The material sheet 18 transitions at an end of the second leg 22 facing away from the first leg 20 into a fourth leg 28, which is directed away from the first leg 20. The second leg 22 and the fourth leg 28 can be oriented perpendicular to each other.

[0055] In the fifth embodiment according to Fig. 1e The material sheet 18 transitions at the end of the second leg 22 facing away from the first leg 20 into a fourth leg 28, which is directed away from the first leg 20. The second leg 22 and the fourth leg 28 can be oriented perpendicular to each other. In addition, the material sheet 18 has two spaced-apart recesses 30, each extending from the first leg 20 into the second leg 22.

[0056] In the sixth embodiment according to Fig. 1f The material sheet 18 transitions into a third leg 26 at an end of the first leg 20 facing away from the second leg 22. An angle between the first leg 20 and the second leg 22 is larger than another angle between the second leg 22 and the third leg 26. The recess 24 of the first leg 20 extends on one side into the third leg 26 and on the other side transitions into the recess 24 of the second leg 22, so that a common overall recess 24 is formed.

[0057] The seventh embodiment according to Fig. 1g exhibits all the features of the sixth embodiment according to Fig. 1f. Additionally, the second leg 22 in the seventh embodiment has according to Fig. 1g has a lateral extension 32. The lateral extension 32 transitions at its free end into a projection 34. The projection 34 is directed away from the first leg 20. The projection 34 can be oriented perpendicular to the second leg 22, in particular to the lateral extension 32.

[0058] In an eighth embodiment, the spring element 10 is designed as a spiral spring 11.

[0059] Fig. Figures 2 to 4 show the device 14 for attaching the mounting rail 16 to the substructure. The device 14 has a fastening part 36 in the form of a roof hook 36, a first connecting device 38 and a second connecting device 40.

[0060] The first connecting device 38 is arranged at one end 42 of the fastening part 36. The first connecting device 38 serves to connect the fastening part 36 to the mounting rail 16, in particular in a releasable manner. The first connecting device 38 comprises the spring element 10, the locking bolt 12, and a nut 44. An opening 46 in the form of an elongated hole 46 extending longitudinally along one end 42 of the fastening part 36 is formed in one end 42 of the fastening part 36. The locking bolt 12 has a rear gripping element 48 in the form of a hammerhead 48 at its head. The rear gripping element 48 engages the mounting rail 16. The locking bolt 12 passes through the opening 46 in one end 42 of the fastening part 36 and is secured to the fastening part 36 by the nut 44 in a captive manner.The length of the locking bolt 12 is chosen such that it corresponds to a multiple of the material thickness of the fastening part 36. The rear grip element 48 is located on one broad side of the fastening part 36, and the screw nut 44 is located on the opposite broad side of the fastening part 36.

[0061] In Fig. In section 2, the nut 44 is located in the free end region of the fixing bolt 12, engaging its threads. The spring element 10 is arranged between the other broad side of one end region 42 of the fastening part 36 and the nut 44, with its recesses 24 passing through the fixing bolt 12. The spring element 10 is supported on one side by the other broad side of one end region 42 of the fastening part 36 and on the other side by the nut 44. The second leg 22 of the spring element 10 rests against the other broad side of one end region 42 of the fastening part 36, and the third leg 26 of the spring element 10 rests at least partially against the nut 44. The fourth leg 28 of the spring element 10 rests against one of the narrow sides of the fastening part 36 to prevent the spring element 10 from rotating.The spring element 10 pre-tensions the locking bolt 12 such that the rear-engaging element 48 comes into contact with one broad side of the fastening part 36, thereby holding the locking bolt 12 in position along the elongated hole 46 on the fastening part 36. The fastening part 36 has engagement elements 50 in the form of teeth 50 on the broad side facing the rear-engaging element 48 at one end region 42. These engagement elements 50 serve to engage with correspondingly designed engagement elements 52, 54 in the form of teeth 52, 54 of an angle element 56 or the mounting rail 16.

[0062] The second connecting device 40 serves to connect the fastening part 36 to the substructure, in particular in the form of a batten or a roof beam. The second connecting device 40 is arranged at the other end region 58 of the fastening part 36. The second connecting device 40 has a further locking bolt 60. The further locking bolt 60 extends through a further opening 62 in the form of a further elongated hole 62 in the other end region 58 of the fastening part 36. The further locking bolt 60 is secured to the other end region 58 of the fastening part 36 by means of a further rear gripping element 64. The further rear gripping element 64 is designed as a further nut 66. The further rear gripping element 64 is inserted laterally into a groove 68 in a base profile rail 70.The base profile rail 70 has a base plate 72, which has, in particular, eight through-openings 74 for the insertion of a screw (not shown). A contact surface 76, having a groove 68, for the contact of the other end region 58 of the fastening part 36 is oriented at an angle to the base plate 72. The other end region 58 is provided on its side facing the contact surface 76 with engagement elements 78 in the form of teeth 78 for engagement with correspondingly designed engagement elements 80 in the form of teeth 80 on the contact surface 76.

[0063] In Fig. Figure 3 shows the rear grip element 48 in its release position, whereas the rear grip element 48 in Fig. 4 is arranged in its rear grip position and engages a double-sided undercut groove 82 of the mounting rail 16 into the mounting rail 16.

[0064] In Fig. In addition, the angle element 56 is provided in sections 5 to 7. An opening is formed in one leg 84 of this angle element, which abuts one broad side of one end region 42 of the fastening part 36. The locking bolt 12 passes through this opening. On its broad side facing away from the fastening part 36, one leg 84 of the angle element 56 has a recess 88 extending in a straight line from one narrow side of the leg 84 to the other narrow side of the leg 84. The opening of the leg 84 is provided in this recess, and the rear gripping element 48 of the locking bolt 12 can be arranged in this recess. The other leg 90 of the angle element 56 extends, in particular vertically, away from one end of the leg 84, so that the leg 90 can be oriented perpendicular to one end region 42 of the fastening part 36. Fig. 5 and Fig. Figure 6 shows the rear gripping element 48 arranged in its release position.

[0065] In Fig. 7 The mounting rail 16 is placed onto the angle element 56. The mounting rail 16 is in contact with one leg 84 and the other leg 90 of the angle element 56. Furthermore, the rear-engaging element 48 is in its rear-engaging position and engages the groove projections 92 of the double-undercut groove 82 of the mounting rail 16. The spring force of the spring element 10 is configured such that the spring element 10 exerts a holding force on the locking bolt 12, thereby holding the angle element 56 and / or the mounting rail 16 in position along the elongated hole 46 in one end region 42 of the fastening part 36.

[0066] The device 14 according to Fig. 8 and Fig. 9 differs from device 14 according to Fig. 5 to 7 in such a way that in Fig. 8 and Fig. 9 the spring element 10 is designed as a coil spring 11 and a protective device 93 is provided. The protective device 93 serves to protect the coil spring 11 at least when the nut 44 is fully tightened and / or to protect against misalignment of the angle element 56. In addition, the protective device 93 can serve to transmit force from the nut 44 to the fastening part 36 when tightened.

[0067] The protective device 93 is U-shaped and its base 95 rests against the opposite broad side of one end region 42 of the fastening part. The two side walls 97 of the U-shaped protective device 93 extend from its base 95 at right angles towards the rear gripping element 48, past the narrow sides of the fastening part 36, and laterally over one leg 84 of the angle element 56. The distance between the two side walls 97 of the protective device 93 is slightly greater than the width of the opposite broad side of the fastening part 36. A through-hole 99 is provided centrally in the base 95 of the protective device 93, through which the locking bolt 12 extends.The locking bolt 12 is encompassed by the coil spring 11, which also extends through the opening 99 of the protective device 93 and is supported on one side by the other broad side of the fastening part 36 and on the other side by the nut 44, which is at least partially screwed onto the locking bolt 12. The rear gripping element 48 of the locking bolt 12 is located on one broad side of the fastening part 36 and the nut 44 is located on the other broad side of the fastening part 36.

[0068] In Fig. Figure 10 shows, in the form of a flowchart, a method 94 for fixing the mounting rail 16 to the device 14, wherein a system is manufactured according to this method 94. This method 94 is feasible for fixing the mounting rail 16 to the device 14 without the angle element or to the device provided with the angle element 56. Fig. Figure 11 shows different positions 116, 118, 120 of the mounting rail 16 and the device 14 during the fixing of the mounting rail 16 on the angle element-free device 14. Fig. Figures 12 a,b show different positions 122, 124, 126, 128, 130 of the mounting rail 16 and the device 14 during the fixing of the mounting rail 16 on the device 14 provided with the angle element 56, wherein the spring element 10 has a material sheet 18.

[0069] In the case of fixing the mounting rail 16 to the angle-free device 14, the angle-free device 14 and the mounting rail 16 are provided in a first process step 96. In a second process step 98, the mounting rail 16 is aligned and positioned by bringing its contact surface 102, which has the engagement elements 54 and the groove opening 100 of the groove 82, against one broad side of one end region 42 of the fastening part 36 by inserting the rear engagement element 48 into the groove opening 100 of the mounting rail 16. The engagement elements 54 of the mounting rail 16 engage with the engagement elements 50 of one end region 42. In a further step 104, the locking bolt 12 is actuated by applying force to its nut-side end such that the rear engagement element 48 enters the groove 82 of the mounting rail 16.Simultaneously or immediately thereafter, the locking bolt 12 is rotated, in particular by 90°, using a tool not shown in the figures, such that its rear-engaging element 48, in its rear-engaging position, engages the groove projections 92 of the undercut groove 82 of the mounting rail 16. The mounting rail 16 is held in position along the elongated hole 46 in one end region 42 of the fastening part 36 by the spring force of the spring element 10 acting on the locking bolt 12. In a final step 106, the nut 44 is further, in particular completely, screwed onto the locking bolt 12, thereby securely fixing the mounting rail 16 to the fastening part 36.

[0070] In the case of fixing the mounting rail 16 to the device 14 provided with the angle element 56, wherein the spring element 10 has a material sheet 18, the device 14 and the mounting rail 16 are provided in a first process step 96. In a subsequent step 98, the mounting rail 16 is aligned and positioned by placing it onto the angle element 56 and bringing it into contact with both legs 84, 90 of the angle element 56. An opening 100 of the groove 82 of the mounting rail 16 is arranged centrally in front of the rear gripping element 48, which is in a release position. In a subsequent step 104, the locking bolt 12 is actuated by applying force to the end of the locking bolt 12 which is provided with the screw nut 44, such that the rear gripping element 48 extends out of the recess 88 of one leg 84 of the angle element 56, passes through the groove opening 100 and enters the groove 82.Simultaneously or shortly thereafter, the locking bolt 12 is rotated, in particular by 90°, by means of a tool not shown in the figures. This moves the rear-engaging element 48 from its release position to its rear-engaging position, in which it engages the groove projections 92 of the undercut groove 82 of the mounting rail 16. The angle element 56 and the mounting rail 16 are held in position along the elongated hole 46 in one end region 42 of the fastening part 36 by the spring force of the spring element 10 acting on the locking bolt 12. In a final step 106, the nut 44 is screwed further, in particular completely, onto the locking bolt 12, thereby securely fixing the mounting rail 16 to the fastening part 36.

[0071] In the case of fixing the mounting rail 16 to the device 14 provided with the angle element 56 and the spring element 10 designed as a spiral spring, the process steps are carried out as described above for the device 14 with the spring element 10 having the material sheet 18 and the angle element 56. Fig. Figure 9 shows the device 14, equipped with the angle element 56 and the spring element 10 designed as a coil spring, with the mounting rail 16 fixed to the device 14. Additionally, in the final step 106, when the nut 44 is fully tightened, the coil spring 11 is tensioned and arranged in a space bounded by the other broad side of the fastening part 36, the nut 44, and the opening 99 of the protective device 93. This protects the coil spring 11 from dirt. The protective device 93 can serve to transmit the force from the tightened nut 44 to the fastening part 36.

[0072] In all three cases, the locking bolt 12, particularly before aligning and positioning the mounting rail 16 relative to the fastening part 36 and / or after actuating and rotating the locking bolt 12, can be positioned in any position along the elongated hole 46 of one end section 42 of the fastening part 36, with the locking bolt, together with the angle element 56 and / or the mounting rail 16, being held in position by the preload of the spring element 10 on the fastening part 36. For positioning, the engagement elements 54 of the mounting rail 16 and the engagement elements 50 of one end section 42 must be disengaged, for which the locking bolt 12 must be actuated against its preload. This can be done, in particular, by directly acting on the locking bolt 12 and / or by pulling on the mounting rail 16 if the mounting rail is already connected to the device 14.

[0073] Fig. Figure 13 shows, in the form of a flowchart, a method 108 for manufacturing the device 14 for attaching the mounting rail 16 to the substructure, wherein the device 14 is equipped with the spring element 10 comprising the material sheet 18. In a first method step 110, the fastening part 36, the locking bolt 12, and the spring element 10 are provided. In a second method step 112, the locking bolt 12 is passed through the opening 46 of the fastening part 36.

[0074] It may be provided that, after the locking bolt 12 has been inserted, the spring element 10 is first inserted according to one of the embodiments shown. Fig. 1a to 1e, the locking bolt 12 is placed on the locking bolt 12 through the recesses 24 of the spring element 10, and subsequently the screw nut 44 is brought into thread engagement with the locking bolt 12 at its free end area, thereby pre-tensioning the locking bolt 12 by means of the spring element 10 (third step 114).

[0075] Alternatively, it can be provided that, after the locking bolt has been inserted, the screw nut 44 is first brought into thread engagement with the locking bolt 12 at its free end area, and subsequently the spring element 10 is inserted according to one of the embodiments shown. Fig. 1f and Fig. 1g is placed on the locking bolt 12 by laterally inserting the locking bolt 12 into the intersecting recesses 24 of the spring element 10, thereby pre-tensioning the locking bolt 12 by means of the spring element 10 (third step 114).

[0076] The pre-tensioned spring element 10 is supported on one side by the fastening part 36 and on the other side by the screw nut 44, which is in thread engagement with the free end of the locking bolt 12.

[0077] Fig. Figures 14 a,b show assembly steps 132, 134, 136, 138, 140 for manufacturing the device 14 with the angle element 56 and the spring element 10 designed as a spiral spring 11.

[0078] In a first step 110, 132, the fastening part 36, the locking bolt 12, the screw nut 44, the spring element 10, the angle element 56 and the protective device 93 are provided. Then the angle element 56 is positioned with one leg 84 against one broad side of one end region 42 of the fastening part 36 and the protective device 93 is positioned with its base 95 against the other broad side of one end region 42 (assembly steps 134, 136). To manufacture the device 14, the locking bolt 12 is further guided through the openings 46 of the angle element and of one end region 46 of the fastening part 36 (step 112, 138), the coil spring 11 is placed on the locking bolt 12 by passing the locking bolt through the passage of the coil spring 11 (assembly step 138) and the screw nut 44 is brought into initial engagement with the thread of the locking bolt 12 (assembly step 140).This tensions the coil spring 11 and pre-tensions the locking bolt 12 with its rear gripping element 48 towards the fastening part 36 by means of the coil spring 11 (step 114). Since the free ends of the side walls 97 of the U-shaped protective device 93 are arranged on both sides in the area of ​​one leg 84 of the angle element 56, misalignment of the angle element 56 with respect to the fastening part 36 is excluded. Reference symbol list 10 spring element 11 spiral spring 12 fixing bolts 14 Device 16 Mounting rail 18 Material sheet 20 first leg of the material sheet 22 second leg of the material sheet 24 Exclusion of the material sheet 26 third leg of the material sheet 28 fourth leg of the material sheet 30 Recess of the material sheet 32 Extension of the second leg of the material sheet 34 Advantage of the second leg of the material sheet 36 Fastening part 38 first connecting device 40 second connection device 42 an end area of ​​the fastening part 44 Screw nut of the first connecting device 46 Opening / slot of one end area 48 Rear grip element of the locking bolt 50 engagement elements / toothing of one end area of ​​the fastening part 52 Engagement elements / toothing of the angle element 54 Engagement elements / toothing of the mounting rail 56 Angle element 58 other end area of ​​the fastening part 60 additional locking bolts 62 additional openings / additional elongated holes 64 additional rear grip element 66 more screw nuts 68 Groove of the base profile rail 70 Base profile rail 72 Base plate 74 Passage opening 76 Plant area 78 Engagement elements / toothing of the other end area 80 engagement elements / toothing of the contact surface of the base profile rail 82 Groove of the mounting rail 84 one leg of the angle element 88 Recessing of one leg of the angle element 90 other legs of the angle element 92 groove overhang 93 Protective device 94 Method for fixing the mounting rail to the device 95 Basis of the protective device 96 first procedural step 97 Side wall of the protective device 98 second procedural step 99 Implementation of the protective device 100 Groove opening of the mounting rail 102 Mounting surface of the mounting rail 104 third procedural step 106 fourth procedural step 108 Method for manufacturing the device 110 first procedural step 112 second procedural step 114 third procedural step 116 First position for establishing a connection between the angle-free device and the mounting rail 118 second position for establishing a connection between the angle-free device and the mounting rail 120 Third position for establishing a connection between the angle-free device and the mounting rail 122 first position for establishing a connection between the device provided with the angle element and the leaf spring 124 second position for establishing a connection between the device equipped with the angle element and the leaf spring and the mounting rail 126 third position for establishing a connection between the device equipped with the angle element and the leaf spring and the mounting rail 128 fourth position for establishing a connection between the device equipped with the angle element and the leaf spring and the mounting rail 130 fifth position for establishing a connection between the device equipped with the angle element and the leaf spring and the mounting rail 132 First assembly step for manufacturing the device equipped with the angle element and the spiral spring 134 Second assembly step for manufacturing the device equipped with the angle element and the spiral spring 136 Third assembly step for manufacturing the device equipped with the angle element and the spiral spring 138 Fourth assembly step for manufacturing the device equipped with the angle element and the spiral spring 140 fifth assembly step for manufacturing the device equipped with the angle element and the spiral spring QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 2 425 188 B1

[0002]

Claims

[1] Spring element (10) for pre-tensioning a locking bolt (12) of a device (14) for fastening a mounting rail (16) to a substructure, wherein the spring element (10) has a material sheet (18) having a first leg (20) and a second leg (22), each having a recess (24) for the locking bolt (12) to pass through, and wherein the spring element (10) is arranged such that the first leg (20) and the second leg (22) are resiliently movable towards each other. [2] Spring element (10) according to claim 1, characterized by, that the material sheet (18) has a third leg (26) at an end of the first leg (20) facing away from the second leg (22), wherein an angle between the first leg (20) and the second leg (22) is greater than a further angle between the second leg (22) and the third leg (26), in particular and wherein the recess (24) of the first leg (20) extends into the third leg (26). [3] Spring element (10) according to claim 1 or 2, characterized by , that the recesses (24) for the lateral insertion of the locking bolt (12) into the recesses (24) merge into one another. [4] Spring element (10) according to one of the preceding claims, characterized by , that the material sheet (18) has a fourth leg (28) at an end of the second leg (22) facing away from the first leg (20), which is directed away from the first leg (20). [5] Spring element (10) according to one of the preceding claims, characterized by , that the second leg (22) has a lateral extension (32) which has a projection (34) at its free end, directed away from the first leg (20). [6] Spring element (10) according to one of the preceding claims, characterized by , that at least one recess (30) of the material sheet (18) extends from the first leg (20) to the second leg (22). [7] Device (14) for fastening a mounting rail (16) to a substructure, comprising a first connecting device (38) and a fastening part (36), at one end region (42) of which the first connecting device (38) for connecting the fastening part (36) to the mounting rail (16) is arranged, wherein the first connecting device (38) has a spring element (10), in particular according to one of claims 1 to 6, and a locking bolt (12) which extends through an opening (46) in the one end region (42) of the fastening part (36), which has a rear gripping element (48) for engaging in the mounting rail (16) and which is pre-tensioned with its rear gripping element (48) by means of the spring element (10) in the direction of the fastening part (36). [8] Device (14) according to claim 7, characterized by, that an angle element (56) with two legs (84, 90) is provided for attaching the mounting rail (16), in particular wherein one leg (84) of the two legs (84, 90) has an opening through which the fixing bolt (12) of the first connecting device (38) passes. [9] Device (14) according to claim 8, characterized by , that one leg (84) of the angle element (56) has a recess (88) extending in a straight line from one side of one leg (84) to the other side of one leg (84), in which the opening of one leg (84) is provided and in which the rear grip element (48) of the locking bolt (12) can be arranged. [10] Device (14) according to any one of claims 7 to 9, characterized by , that the opening (46) in one end region (42) of the fastening part (36) is designed as an elongated hole (46). [11] Device (14) according to any one of claims 7 to 10, characterized by, that a protective device (93) is provided which protects the spring element (10) from environmental influences at least when the screw nut (44) is fully screwed onto the fixing bolt (12) and / or which serves to transmit the force of the screw nut (44) to the fastening part (36) in the tightened state. [12] Device (14) manufactured according to a method (108) comprising the following steps: - Providing (110) a fastening part (36) with an opening (46) in one end region (42), a fixing bolt (12) with a rear gripping element (48) for engaging in the mounting rail (16) and a spring element (10), in particular according to one of claims 1 to 6; - Passing (112) the locking bolt (12) through the opening (46) of the fastening part (36); - Preloading (114) of the locking bolt (12) with its rear gripping element (48) in the direction of the fastening part (36) by means of the spring element (10), which is supported on the one hand indirectly or directly on the fastening part (36) and on the other hand indirectly or directly on the locking bolt (12). [13] Device (14) according to claim 12, characterized by , that after passing (112) the locking bolt (12) through, the spring element (10) is first placed on the locking bolt (12) by passing through the locking bolt (12) through recesses (24) of the spring element (10) or by passing the spring element (11) through, and subsequently an internal thread of a screw nut (44) is engaged with an external thread of the locking bolt (12) at its free end area, thereby pre-tensioning the locking bolt (12) by means of the spring element (10). [14] Device (14) according to claim 12, characterized by, that after passing (112) the locking bolt (12) through, first an internal thread of a screw nut (44) is engaged with an external thread of the locking bolt (12) at its free end area, and subsequently the spring element (10) is placed on the locking bolt (12) by laterally inserting the locking bolt (12) into intersecting recesses (24) of the spring element (10), thereby pre-tensioning the locking bolt (12) by means of the spring element (10). [15] System with a device (14) according to one of claims 7 to 11, manufactured according to a method (94) comprising the following steps: - Providing (96) the device (14) and the mounting rail (16) which has a groove (82) that is undercut on at least one side; - Aligning and positioning (98) the mounting rail (16) with an opening (100) of the groove (82) centrally in front of the rear grip element (48) arranged in a release position or by inserting the rear grip element (48) arranged in the release position into the opening (100) of the groove (82); - Actuating (104) the locking bolt (12) against its preload and rotating the locking bolt (12) such that the rear gripping element (48) arranged in a rear gripping position engages at least one groove projection (92) of the groove (82); - Securing (106) the mounting rail (16) to the fastening part (36) by screwing the nut (44) onto the fixing bolt (12). [16] System according to claim 15, characterized by, that, in particular before aligning and positioning (98) the mounting rail (16) and / or after actuating and rotating (104) the locking bolt (12), the locking bolt (12) is positioned in the elongated hole (46) of the fastening part (36) by actuating the locking bolt (12) against its preload. [17] System according to claim 15 or 16, characterized by , that for aligning and positioning (98) the mounting rail (16) the mounting rail (16) comes into contact with at least one leg (84, 90) of the angle element (56) or with one end region (42) of the fastening part (36).

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