PROFILE RAIL FOR A DOOR GUIDE

Abstract

A profile rail for a door guide of a vehicle, comprises a first profile rail piece with a first end face and with a second end face, and a connecting piece. The connecting piece comprises a first end and a second end. The first end of the connecting piece comprises a first end-face connection region for connecting to the first profile rail piece. The connecting piece is designed as a separate profile rail piece. The connecting piece can be connected via the first end-face connection region to at least one end face of the first profile rail piece by means of a plug-in system. The first end-face connection region is arranged in a first connection plane which has a first angle to a first plane normal to an extension of the connecting piece.

Claims

1. A profile rail for a door guide of a vehicle, comprising: a first profile rail piece with a first end face and with a second end face; and a connecting piece, wherein the connecting piece comprises a first end and a second end, wherein the first end of the connecting piece comprises a first end-face connection region for connecting to the first profile rail piece, wherein the connecting piece is designed as a separate profile rail piece, wherein the connecting piece is connectable via the first end-face connection region to at least one end face of the first profile rail piece by means of a plug-in system, and wherein the first end-face connection region is arranged in a first connection plane which has a first angle to a first plane normal to an extension of the connecting piece.

2. The profile rail according to claim 1, wherein the first angle between the first connection plane and the first normal plane extends between 20° and 70°.

3. The profile rail according to claim 1, wherein the first end-face connection region comprises protrusions formed as plug-in elements and latching elements, and wherein the plug-in elements and the latching elements are arranged perpendicularly with respect to the first normal plane.

4. The profile rail according to claim 1, wherein the connecting piece comprises an upper connecting piece part and a lower connecting piece part, and wherein the upper connecting piece part and the lower connecting piece part is connectable to one another along a connecting line extending, at least in sections, transversely with respect to the first end-face connection region.

5. The profile rail according to claim 1, wherein the first profile rail piece comprises, on a side facing the vehicle, a hollow chamber which is continuous at least in sections, wherein a slot recess is formed in the hollow chamber, and wherein a threaded bolt is insertable with a head piece into the hollow chamber.

6. The profile rail according to claim 1, wherein the connecting piece comprises at least one latching element with a resilient, elastic latching lug, and wherein the latching lug of the connecting piece is lockable and unlockable with a counter latching element formed as a recess in the first profile rail piece.

7. The profile rail according to claim 1, wherein the second end of the connecting piece comprises a second end-face connection region for connecting to a second profile rail piece, wherein the second end-face connection region is arranged in a second connection plane which has a second angle to a second normal plane, and wherein the second connection plane extends at a second angle with respect to the second normal plane of the second end-face connection region of between 20° and 70°.

8. A profile rail for a door guide of a vehicle, comprising: a first profile rail piece with a first end face and with a second end face; and a connecting piece, wherein the connecting piece comprises a first end and a second end, wherein the first end of the connecting piece comprises a first end-face connection region for connecting to the first profile rail piece, wherein the connecting piece is configured as a separate profile rail piece, wherein the connecting piece is connectable via the first end-face connection region to at least one end face of the first profile rail piece by means of a plug-in system, wherein the first profile rail piece comprises, on a side facing the vehicle, a hollow chamber which is continuous at least in sections, wherein a slot recess is formed in the hollow chamber, and wherein a threaded bolt is insertable with a head piece into the hollow chamber.

9. The profile rail according to claim 8, wherein the first end-face connection region is arranged in a first connection plane which has a first angle to a first plane normal to an extension of the connecting piece.

10. The profile rail according to claim 9, wherein the first end-face connection region comprises protrusions formed as plug-in elements and latching elements, and wherein the plug-in elements and the latching elements are arranged perpendicularly with respect to the first normal plane.

11. The profile rail according to claim 9, wherein the first angle between the first connection plane and the first normal plane extends between 20° and 70°.

12. The profile rail according to claim 8, wherein the connecting piece comprises an upper connecting piece part and a lower connecting piece part, and wherein the upper connecting piece part and the lower connecting piece part are connectable to one another along a connecting line extending, at least in sections, transversely with respect to the first end-face connection region.

13. The profile rail according to claim 8, wherein the connecting piece comprises at least one latching element with a resilient, elastic latching lug, and wherein the latching lug of the connecting piece is lockable and unlockable with a counter latching element formed as a recess in the first profile rail piece.

14. The profile rail according to claim 8, wherein the second end of the connecting piece comprises a second end-face connection region for connecting to a second profile rail piece, wherein the second end-face connection region is arranged in a second connection plane which has a second angle to a second normal plane, and wherein the second connection plane extends at a second angle with respect to the second normal plane of the second end-face connection region of between 20° and 70°.

15. A profile rail for a door guide of a vehicle, comprising: a first profile rail piece with a first end face and with a second end face; and a connecting piece, wherein the connecting piece comprises a first end and a second end, wherein the first end of the connecting piece comprises a first end-face connection region for connecting to the first profile rail piece, wherein the connecting piece is configured as a separate profile rail piece, wherein the connecting piece is connectable via the first end-face connection region to at least one end face of the first profile rail piece by a plug-in system, wherein the connecting piece comprises at least one latching element with a resilient, elastic latching lug, and wherein the latching lug of the connecting piece lockable and unlockable with a counter latching element formed as a recess in the first profile rail piece.

16. The profile rail according to claim 15, wherein the first profile rail piece comprises, on a side facing the vehicle, a hollow chamber which is continuous at least in sections, wherein a slot recess is formed in the hollow chamber, and wherein a threaded bolt is insertable with a head piece into the hollow chamber.

17. The profile rail according to claim 15, wherein the first end-face connection region is arranged in a first connection plane which has a first angle to a first plane normal to an extension of the connecting piece.

18. The profile rail according to claim 17, wherein the first angle between the first connection plane and the first normal plane extends between 20° and 70°.

19. The profile rail according to claim 15, wherein the connecting piece comprises an upper connecting piece part and a lower connecting piece part, and wherein the upper connecting piece part and the lower connecting piece part are connectable to one another along a connecting line extending, at least in sections, transversely with respect to the first end-face connection region.

20. The profile rail according to claim 15, wherein the second end of the connecting piece comprises a second end-face connection region for connecting to a second profile rail piece, wherein the second end-face connection region is arranged in a second connection plane which has a second angle to a second normal plane, and wherein the second connection plane extends at a second angle with respect to the second normal plane of the second end-face connection region of between 20° and 70°.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Further advantages, properties, features, and developments of the present disclosure emerge from the following description.

[0046] The present disclosure is explained in more detail below with reference to the accompanying drawings.

[0047] FIG. 1 shows a perspective exploded view of a first exemplary embodiment of a profile rail.

[0048] FIG. 2 shows a perspective view of a curved connecting piece of the profile rail of FIG. 1.

[0049] FIG. 3 shows a cross section along the line III-Ill of the first profile rail piece of FIG. 1.

[0050] FIG. 4 shows a perspective view of the profile rail of FIG. 1 in an assembled state.

[0051] FIG. 5 shows the profile rail of FIG. 4 in a view from above.

[0052] FIG. 6 shows a cross section along the line VI-VI of the first profile rail piece of FIG. 5.

[0053] FIG. 7 shows a perspective exploded view of a second exemplary embodiment of the profile rail according to the present disclosure.

[0054] FIG. 8 shows a perspective rear view of the profile rail of FIG. 7.

[0055] FIG. 9 shows a plugged-together profile rail of FIG. 8.

[0056] FIG. 10 shows a plan view of a transition region of the plugged-together profile rail of FIG. 9.

[0057] FIG. 11 shows a perspective view of a curved two-part connecting piece in a plugged-together state of FIG. 10.

[0058] FIG. 12 shows a perspective exploded view of the curved two-part connecting piece of the profile rail of FIG. 11.

[0059] FIG. 13 shows a perspective rear view of the curved two-part connecting piece of the profile rail of FIG. 12.

[0060] FIG. 14 shows an end-face front view of the connecting piece in a plugged-together state of FIG. 13.

DETAILED DESCRIPTION

[0061] FIG. 1 shows a perspective schematic view of an exploded representation of a first exemplary embodiment of a three-piece profile rail 1, which comprises a first straight profile rail piece 2, a second straight profile rail piece 3 and a curved connecting piece 4 arranged between the two profile rail pieces 2 and 3. The connecting piece 4 is thus designed as a third profile rail piece. The first profile rail piece 2 has a first end face S1 in a direction to the connecting piece 4, wherein the first profile rail piece 2 has a second end face S2 in a direction away from the connecting piece 4. Correspondingly to the first profile rail piece 2, the second profile rail piece 3 has a first end face S3 in a direction to the connecting piece 4, wherein the second profile rail piece 3 has a second end face S4 in a direction away from the connecting piece 4. The connecting piece 4, which is curved in sections, comprises a first end 4a, which faces the first end face S1 of the first profile rail piece 2, and a second end 4b, which faces the first end face S3 of the second profile rail piece 3. On the one hand, the first end 4a of the connecting piece 4 comprises a first end-face connection region 5 for connecting to the first profile rail piece 2 and, on the other hand, the second end 4b of the connecting piece 4 comprises a second end-face connection region 6 for connecting to the second profile rail piece 3. The connecting piece 4 is symmetrical with respect to a bisecting center plane E. The first connection region 5 and the second connection region 6 thus advantageously have the same or a mirror-symmetrical geometry.

[0062] FIG. 2 shows, in an enlarged view, the curved connecting piece 4 with an inner radius R from FIG. 1, wherein the first connection region 5 has a first linear latching element 7a with a first latching lug 7b, a first linear plug-in element 8 and a second linear plug-in element 9. Furthermore, the first connection region 5 of the connecting piece 4 contains a first linear guide element 10 and a second linear guide element 11, which are each designed as flat thin-walled plates. The second connection region 6 of the connecting piece 4 has a first linear latching element 12a with a first latching lug 12b, a first linear plug-in element 13 and a second linear plug-in element 14. Furthermore, the second connection region 6 of the connecting piece 4 contains a first linear guide element 15, which can be seen in FIG. 4, and a second linear guide element 16, which can be seen in FIG. 5. Due to their guiding and holding function, the guide elements 10; 11; 15; 16 prevent a rotation or a change in position in any direction of the connecting piece 4 in an assembled state of the profile rail 1. Overall, the connecting piece 4 with its latching and plug-in elements 7a; 7b; 8; 9; 12a; 12b; 13; 14 and with its guide elements 10; 11; 15; 16 is formed uniformly or from a casting.

[0063] FIG. 3 shows a C-shaped cross section along the line III-Ill of the profile rail piece 2 of FIG. 1. The C-shaped cross section of the profile rail piece 2 has a base 17 designed as a vertical wall with an inner side 18 and an outer side 19. A first guide profile 20a of the profile rail piece 2, in which the guide and support rollers can be displaced, is accordingly located on a side facing the inner side 18. Furthermore, the base 17 has a lower leg 21 and an upper leg 22, wherein a third leg 23 extends from the upper leg 22 at the end face in a direction to the lower leg 21. The lower leg 21 has a first hollow chamber H1 in which a counter latching element 26 is arranged. The upper leg 22 has a second hollow chamber H2 and the third leg 23 has a third hollow chamber H3. The hollow chambers H1, H2; H3 and the counter latching element 26 of the first profile rail piece 2 are provided as female receiving elements for the respective male plug-in and latching elements 7a; 7b; 8; 9 of the connecting piece 4 of FIG. 2. Furthermore, the hollow chambers H1, H2; H3 of the first profile rail piece 2 have rounded corners 24a; 24b; 24c; 24d; 24e; 24f and lead-in chamfers 25a; 25b; 25c. The lead-in chamfers 25a; 25b; 25c are each arranged at an entry into a hollow chamber H1, H2; H3 and completely comprise a circumference of the respective hollow chamber H1, H2; H3 so that the plug-in and latching elements 7a; 7b; 8; 9 of the connecting piece 4 can be inserted smoothly into the corresponding hollow chambers H1, H2; H3 of the first profile rail piece 2. The counter latching element 26, which is arranged in the lower leg 21 of the profile rail piece 2, is designed as a through-hole into which the latching lug 7b of the latching element 7a; 7b of the connecting piece 4 of FIG. 2 can latch in a form-fitting manner when the connecting piece 4 is plugged together with the profile rail piece 2. Moreover, the base 17 comprises a step-like bend 27 so that a lower region 17a of the base 17 and an upper region 17b of the base 17 are arranged offset to one another.

[0064] FIG. 4 shows a profile rail 1 assembled from the separate profile rail pieces 2; 3; 4 of FIG. 1. The profile rail 1 is designed for use in a door guide for a vehicle. The profile rail 1 shown in FIG. 4 serves to guide support and guide means (not shown in greater detail here) of a vehicle sliding door and extends substantially axially along a main sliding direction of the vehicle sliding door. In order to mount the profile rail 1 on a vehicle body, the first profile rail piece 2 and the second profile rail piece 3 each have at least one elongated hole 28a; 28b; 28c; 28d; 28e. The profile rail 1 can be connected to a vehicle body with the aid of force-fitting and form-fitting connecting means, e.g., screws, which pass through the elongated holes 28a; 28b; 28c; 28d; 28e of the first profile rail piece 2 and of the second profile rail piece 3. Furthermore, FIG. 4 shows the guide elements 10; 15 of the connecting piece 4, which are arranged on the inner side 18 of the profile rail 1. Here, the guide element 10 of the connecting piece 4 extends in the longitudinal direction with respect to the first profile rail piece 2 in a direction to the second end face S2 of the first profile rail piece 2. The guide element 15 of the connecting piece 4 extends in the longitudinal direction with respect to the second profile rail piece 3 in a direction to the second end face S4 of the second profile rail piece 3. The first profile rail piece 2 has a first guide profile 20a. The connecting piece 4 has a second guide profile 20b, and the second profile rail piece 3 has a third guide profile 20c. So that corresponding support and guide rollers can be perfectly displaced within the guide profiles 20a; 20b; 20c, the assembled profile rail 1 has a flush and aligned transition between the first profile rail piece 2 and the connecting piece 4 and between the second profile rail piece 3 and the connecting piece 4 so that the guide profiles 20a; 20b; 20c of the first profile rail piece 2, of the second profile rail piece 3 and of the connecting piece 4 form a unit, as a result of which the support and guide rollers can be displaced quietly and with high running smoothness within the assembled profile rail 1. Furthermore, the respective transitions of the profile rail 1 are designed to be virtually gap-free and continuous.

[0065] FIG. 5 shows the assembled profile rail 1 of FIG. 4 in a view from above. In that the connecting piece 4 has a curved portion with an inner radius R, the first profile rail piece 2 and the second profile rail piece 3 are arranged at an angle W to one another due to the connecting piece 4. The angle W here is 120°. Furthermore, the inner radius R of the connecting piece 4 in this exemplary embodiment is 65 millimeters so that a rounded and uniform transition from the first profile rail piece 2 to the second profile rail piece 3 is ensured by the connecting piece 4. Furthermore, the outer side 19 of the profile rail 1 can be seen in FIG. 5 so that the guide elements 11; 16 of the connecting piece 4 can be seen. Here, the guide element 11 of the connecting piece 4 extends in the longitudinal direction with respect to the first profile rail piece 2 in a direction to the second end face S2 of the first profile rail piece 2. The guide element 16 of the connecting piece 4 extends in the longitudinal direction with respect to the second profile rail piece 3 in a direction to the second end face S4 of the second profile rail piece 3.

[0066] FIG. 6 shows a C-shaped cross section along the line VI-VI of the profile rail piece 2 of FIG. 5. In a plugged-together state of the profile rail 1, the guide elements 10; 11 of the connecting piece 4 are respectively arranged in the longitudinal direction of the profile rail piece 2 so as to abut on the inner side 18 and on the outer side 19 of the base 17. Here, the first guide element 10 of the connecting piece 4 is located on the inner side 18 in the lower region 17a of the base 17. The second guide element 11 of the connecting piece 4 is located on the outer side 19 in the upper region 17b of the base 17. As a result, due to this arrangement clamping the base 17, undesired rotation of the connecting piece 4 with respect to the first profile rail piece 2 is prevented. Furthermore, FIG. 6 shows the latching lug 7b of the connecting piece 4 in the lower leg 21 of the first profile rail piece 2, which is in engagement with the counter latching element 26, as a result of which the connecting piece 4 is fixed in the first profile rail piece 2.

[0067] Correspondingly to the first profile rail piece 2, the second profile rail piece 3 has the same cross-sectional profile so that the second profile rail piece 3 can be plugged together with the connecting piece 4 via the connection region 6 at the second end 4b, which is symmetrical with respect to the first end 4a.

[0068] In order to connect the connecting piece 4 to the first profile rail piece 2 in a form-fitting manner, the connecting piece 4 and the first profile rail piece 2 must initially be arranged butt-to-butt so that, for example, the first end 4a of the connecting piece 4 is oriented in parallel to the first end face S1 of the first profile rail piece 2. Moreover, the connecting piece 4 and the first profile rail piece 2 each have a C-shaped cross section so that the first end 4a of the connecting piece 4 and the first end face S1 of the first profile rail piece are oriented congruently with respect to their C-shaped cross section. In this respect, it should also be noted that the plug-in and latching elements 7a; 7b; 8; 9 are each oriented concentrically and coaxially with respect to the hollow chambers H1, H2; H3 of the first end face S1 of the first profile rail piece 2 so that the plug-in and latching elements 7a; 7b; 8; 9 can be inserted into the respective hollow chambers H1, H2; H3, which are located within the end face S1. The latching element 7a with the latching lug 7b is assigned to the first hollow chamber H1 with the counter latching element 26. The plug-in element 8 is assigned to the third hollow chamber H3 and the plug-in element 9 is assigned to the second hollow chamber H2. Furthermore, it should be noted that the guide profile 20a of the first profile rail piece 2 and the guide profile 20b of the connecting piece 4 are arranged so as to be parallel, aligned and flush with one another. As soon as the corresponding orientation of the first profile rail piece 2 and of the connecting piece 4 has been carried out, the connecting piece 4 can be inserted with its plug-in and latching elements 7a; 7b; 8; 9 into the corresponding hollow chambers H1, H2; H3 of the first profile rail piece 2, and thus plugged together, until the latching lug 7b of the connecting piece 4 engages in the counter latching element 26 in the lower leg 21. In this way, a force-fitting and form-fitting plug connection is formed between the connecting piece 4 and the first profile rail piece 2. The counter latching element 26 is arranged in the guide profile 20a of the first profile rail piece 2 in the lower leg 21. Furthermore, the counter latching element 26 is designed as a through-hole in the lower leg 21 of the first profile rail piece 2 so that the latching lug 7b is freely accessible on the underside thereof. By pressing the underside of the latching lug 7b in a direction to the upper leg 22 of the profile rail piece 2, the latching lug 7b can be displaced into a position outside the counter latching element 26 in that the latching lug 7b is displaced upward until the latching lug 7b is disengaged from the counter latching element 26. If the latching lug 7b is located outside the counter latching element 26, it is possible to separate the connecting piece 4 and the first profile rail piece 2 from one another by pulling them apart. In this case, the plug connection between the connecting piece 4 and the first profile rail piece 2 can be separated in a simple manner without using a tool so that the plug-in and latching elements 7a; 7b; 8; 9 of the connecting piece 4 can be pulled out of the respective hollow chambers H1; H2; H3 of the first profile rail piece 2. As a result, two separate profile rail pieces, namely the connecting piece 4 and the first profile rail piece 2, are again obtained.

[0069] In order to connect the second profile rail piece 3 to the second end 4b of the connecting piece 4, the above steps are carried out correspondingly to the connection of the first profile rail piece 2. Separation of the connection between the connecting piece 4 and the second profile rail piece 3 is likewise carried out correspondingly to the first profile rail piece 2 as described above. Due to the fact that the first profile rail piece 2 and the second profile rail piece 3 are connected to the connecting piece 4, a profile rail 1, which is shown in FIG. 4, is assembled in this way and is thus provided for use in a door guide of a vehicle.

[0070] Production of the curved connecting piece 4, which consists of a plastic, takes place by means of an injection molding process since the injection molding process can economically produce any shapes with any wall thicknesses in a large quantity. The material of the first profile rail piece 2 and of the second profile rail piece 3 is an aluminum alloy, wherein the two straight profile rail pieces 2 and 3 are produced by means of an extrusion process. By using aluminum alloys, a required load-bearing capacity and load capacity of the door guide is ensured so that vehicle doors with increased weight can also be reliably used and put into operation.

[0071] Overall, the profile rail 1 has a modular design in that any rail guides can be produced in a versatile manner as a result of a modular plug-in system. As a result of the modular design of the profile rail 1, multiple curved or straight connecting pieces 4 can be plugged together with further profile rail pieces 2 and 3 since the respective end faces S1; S2; S3; S4 of the profile rail pieces 2 and 3 and the ends 4a; 4b as well as the connection regions 5; 6 of the connecting piece 4 are always matched with one another. As a result, it is possible to assemble any individual guide tracks of a profile rail 1. The advantage is that required manufacturing and installation tolerances can always be maintained so that a reproducible assembly on a vehicle is always made possible. This creates standardized individual components of a profile rail 1 for a door guide, which are exactly matched with one another. Furthermore, a basis for robot-assisted automation of the assembly is thus created. The profile rail 1 finally ensures quiet operation and a long service life, whereby a corresponding door guide is characterized by very high quality.

[0072] The plug connection technique of the profile rail 1 explained above comprises a first form-fitting plug connection component which is produced by the latching element 7a; 7b of the connecting piece 4 and of the associated counter latching element 26 of the first profile rail piece 2 as a result of an engagement. The profile rail 1 also comprises a second force-fitting plug connection component in that the plug-in elements 8; 9, a first plug-in region of the latching element 7a and the guide elements 10; 11 of the connecting piece 4 abut in a frictional and clamping manner, in the fashion corresponding to a press fit, in the lower region 17a and in the upper region 17b of the base 17 and in the hollow chambers H1, H2; H3 of the first profile rail piece 2. Furthermore, an alternative plug connection technique of the profile rail 1 could be carried out exclusively via force fit in that no latching elements are provided so that a disassembly of the profile rail 1 into its individual parts 2; 3; 4 can be carried out even more easily and more quickly.

[0073] FIGS. 7 to 10 show a preferred second exemplary embodiment of the profile rail 1 according to the present disclosure. In this case, the second exemplary embodiment of the profile rail 1 has several differences with respect to the first exemplary embodiment.

[0074] One difference is that the connecting piece 4, which is shown enlarged, inter alia, in FIGS. 11 to 14, is now composed of two parts.

[0075] FIGS. 12 and 13 show that the connecting piece 4 curved with a radius R comprises an upper connecting piece part 33 and a lower connecting piece part 34, wherein the upper connecting piece part 33 and the lower connecting piece part 34 can be plugged together in a force-fitting and form-fitting manner, by means of connecting-line plug-in elements 60 and by means of connecting-line latching elements 61, along a connecting line 35 to form a unit. The upper connecting piece part 33 and the lower connecting piece part 34 are thus separate components which, in a plugged-together state, form the connecting piece 4 according to FIGS. 11 and 14. Furthermore, the upper connecting piece part 33 and the lower connecting piece part 34 consist of the same plastic material.

[0076] FIG. 13 shows that the lower connecting piece part 34 has a total of five connecting-line plug-in elements 60 designed as rectangular protrusions, wherein the upper connecting piece part 33 has complementary cutouts 63, which are shown in dashed lines, into which the connecting-line plug-in elements 60 can be inserted in a force-fitting manner.

[0077] In this case, the lower connecting piece part 34 has an L-shaped cross section, wherein the L-shaped cross section comprises a first vertical leg 64 facing the vehicle body VB and a second horizontal leg 65 facing away from the vehicle body VB. The connecting-line plug-in elements 60 are arranged on a horizontal surface 64a of the first vertical leg 64 of the lower connecting piece part 34, wherein the connecting-line plug-in elements 60 extend in the longitudinal direction of the lower connecting piece part 34. Furthermore, the connecting-line plug-in elements 60 have different lengths so that the lower connecting piece part 34 has three long and two short connecting-line plug-in elements 60 which follow the curvature of the radius R.

[0078] The upper connecting piece part 33 has a U-shaped cross section rotated by 180°, wherein the U-shaped cross section comprises a first vertical leg 66 facing the vehicle body VB, a second horizontal leg 67 facing away from the vehicle body VB and a third vertical leg 68 protruding from the second leg 67. Here, cutouts 63 are arranged on a horizontal surface 66a of the first vertical leg 66 of the upper connecting piece part 33 and are respectively provided as a complementary receptacle for the connecting-line plug-in elements 60 of the lower connecting piece part 34.

[0079] Furthermore, four equally long vertical connecting-line latching elements 61 protrude from the horizontal surface 66a of the first vertical leg 66 of the upper connecting piece part 33, are arranged flush with a rear side of the first vertical leg 66 and are adapted to the curvature of the radius R.

[0080] Both the connecting-line plug-in elements 60 and the connecting-line latching elements 61 are arranged perpendicularly with respect to an extension direction of the upper connecting piece part 33 or of the lower connecting piece part 34, the latter facing one another.

[0081] In order to plug together the upper connecting piece part 33 with the lower connecting piece part 34, the connecting-line plug-in elements 60 of the lower connecting piece part 34 are arranged so as to be aligned with the cutouts 63 of the upper connecting piece part 33 and are plugged into one another. The different lengths of the connecting-line plug-in elements 60 or of the complementary cutouts 63 support the correct orientation and positioning of the upper connecting piece part 33 and of the lower connecting piece part 34 during assembly. In addition, the four connecting-line latching elements 61 designed as claws engage or latch behind, which are arranged on a side 36 of the lower connecting piece part 34 facing the vehicle body VB, an undercut 62 formed as a rib of the lower connecting piece part 34. The upper connecting piece part 33 and the lower connecting piece part 34 are thus connected to one another in a force-fitting and form-fitting manner, as a result of which a stable connecting piece 4 is provided.

[0082] FIG. 14 shows a front view of the assembled connecting piece 4. It can be clearly seen that the end-face connecting-line plug-in element 60 of the lower connecting piece part 34 is arranged in the end-face cutout 63 of the upper connecting piece part 33, wherein an outward directed side of the end-face cutout 63 is open. Moreover, it can be clearly seen in conjunction with FIG. 12 that the guide elements 42; 45; 49; 52 and the plug-in elements 46; 53 of the upper connecting piece part 33 and of the lower connecting piece part 34 are profiled. Furthermore, the latching lugs 41; 44; 48; 51 of the upper connecting piece part 33 and of the lower connecting piece part 34 have different widths, as a result of which the stability of the connecting piece 4 within the plugged-together profile rail 1 is increased with regard to any torsional forces.

[0083] A further difference is that the first profile rail piece 2 and the second profile rail piece 3, on the side 36 facing the vehicle body VB of the vehicle, now have an upper and a lower hollow chamber 37, which are formed in the longitudinal direction and each have a slot recess 38, as shown in FIG. 8 and in FIG. 9, so that a head piece 40 of a threaded bolt 39 can be inserted into the hollow chamber 37 and can be displaced in the longitudinal direction of the first profile rail piece 2 or of the second profile rail piece 3. The threaded bolt 39 thus protrudes away from the profile rail 1 in the direction of the vehicle body VB, wherein the headpiece 40 of the threaded bolt 39 is displaceably arranged in the hollow chamber 37.

[0084] In this way, the flexibility of the profile rail 1 to be assembled with the vehicle is advantageously increased in that the position of the threaded bolt 39 can be adjusted in a guided manner in the longitudinal direction of the first profile rail piece 2 or of the second profile rail piece 3, whereby manufacturing tolerances can be easily compensated by a guided displacement of the threaded bolt 39 within the hollow chamber 37. Furthermore, fastening elements for fastening the profile rail 1 to the vehicle body VB are not visible to a person from the outside and a corrosion source is advantageously eliminated.

[0085] FIGS. 7 to 10 show that the first profile rail piece 2 has an upper counter latching element 54 designed as a rectangular through-hole and an opposite lower counter latching element 55 designed as a rectangular through-hole. The second profile rail piece 3 has an upper counter latching element 56 designed as a rectangular through-hole and an opposite lower counter latching element 57 designed as a rectangular through-hole. In this case, only the upper counter latching elements 54; 56 of the first profile rail piece 2 or of the second profile rail piece 3 can be seen in FIGS. 7 to 10.

[0086] A further difference is that the first end-face connection region 5 of the connecting piece 4 is arranged in a first connection plane 29, which can be seen in FIG. 10 and in FIG. 11, wherein the first connection plane 29 extends at a first angle 31 to a first normal plane 32. Furthermore, the second opposite end-face connection region 6 of the connecting piece 4 is arranged in a second connection plane 30, wherein the second connection plane 30 extends at a second angle 58 to a second normal plane 59. Both the first normal plane 32 and the opposite second normal plane 59 are arranged perpendicularly to an extension direction of the connecting piece 4.

[0087] Moreover, the first end-face connection region 5 with the first connection plane 29 and the second end-face connection region 6 with the second connection plane 30 are arranged in parallel to one another, which can be seen in FIG. 10 in a view from above. Furthermore, both the first angle 31 and the second angle 58 are approximately 30°.

[0088] FIGS. 11 to 14 show that the first end-face connection region 5 of the upper connecting piece part 33 has an upper latching element 43 with a latching lug 44, an upper guide element 45 and a plug-in element 46, wherein the upper latching element 43 with the latching lug 44, the upper guide element 45 and the plug-in element 46 are arranged perpendicularly with respect to the first normal plane 32.

[0089] The opposite second end-face connection region 6 of the upper connecting piece part 33 has an upper latching element 50 with a latching lug 51, an upper guide element 52 and a plug-in element 53, wherein the upper latching element 50 with the latching lug 51, the upper guide element 52 and the plug-in element 53 are arranged perpendicularly with respect to the second normal plane 59.

[0090] Furthermore, the first end-face connection region 5 of the lower connecting piece part 34 has a lower latching element 40 with a latching lug 41 and a lower guide element 42, wherein the lower latching element 40 with the latching lug 41 and the lower guide element 42 are arranged perpendicularly with respect to the first normal plane 32.

[0091] The opposite second end-face connection region 6 of the lower connecting piece part 34 has a lower latching element 47 with a latching lug 48 and a lower guide element 49, wherein the lower latching element 47 with the latching lug 48 and the lower guide element 49 are arranged perpendicularly with respect to the second normal plane 59.

[0092] As a result, in an assembled state of the profile rail 1, the respective latching lugs 41; 44; 48; 51 of the connecting piece 4 are in engagement in the corresponding counter latching elements 54; 55; 56; 57 of the two profile rail pieces 2; 3, wherein the first profile rail piece 2 and the second profile rail piece 3 each have end faces S1; S2; S3; S4 which are complementary to the connecting piece 4 for a flush and virtually gap-free plugging-together of the profile rail 1.

[0093] Furthermore, FIG. 9 shows that, in an assembled state of the profile rail 1, the guide elements 49; 52 of the connecting piece 4 are respectively arranged at least in sections in a lower and upper hollow chamber 37 of the second profile rail piece 3. The opposite guide elements 42; 45, which are not visible here, are accordingly arranged in the lower or upper hollow chamber 37 of the first profile rail piece 2.