Tensioning rail or guide rail with securing means for retaining bolts

1. A tensioning rail for tensioning or a guide rail for guiding a drive chain ( 6 ), comprising an opening ( 16 ) for receiving a retaining bolt ( 17 ) and a retaining bolt ( 17 ) which can be inserted into the opening ( 16 ), whereby a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) is provided with a lock projection ( 18 , 18 . 1 ) at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position, the retaining bolt ( 17 ) having a insertion section ( 20 ) and a threaded section ( 19 ), both for insertion into the opening ( 16 ), the lock recess ( 21 ) is formed at the outer circumference of the insertion section ( 20 ) and the threaded section slightly projects out of the opening on one side of the tensioning or guide rail ( 7 , 8 ) in the mounting position to provide a threading aid.

2. The tensioning rail or the guide rail according to claim 1 , wherein the lock recess ( 21 ) is formed by a ring groove.

3. The tensioning rail or the guide rail according to claim 1 , wherein the lock projection ( 18 . 1 ) is formed by a ring web or ring bead.

4. The tensioning rail or the guide rail according to claim 1 , wherein the lock projection ( 18 , 18 . 1 ) has a height (H) not more than 10% of the diameter (D) of the opening ( 16 ) and at least 1% of the diameter (D) of the opening ( 16 ).

5. The tensioning rail or the guide rail according to claim 1 , further comprising a second lock recess ( 22 ) arranged at a distance (M) from the first lock recess ( 21 ), said distance (M) corresponding substantially to the distance between the mounting position and the fixing position.

6. A tensioning rail series or a guide rail series comprising a tensioning rail or a guide rail ( 7 , 8 ) of a first overall width (B 1 ), and a tensioning rail or a guide rail of a second overall width (B 2 ), both according to claim 1 , respectively, a retaining bolt ( 17 ) which can be inserted into a respective opening ( 16 ) of both tensioning and/or guide rails ( 7 , 8 ), and a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) and comprising a lock projection at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position.

7. The tensioning rail series or the guide rail series according to claim 6 , wherein a carrier ( 12 , 13 ) of the tensioning or guide rail ( 7 , 8 ) and the retaining bolt ( 17 ) comprise a respective mounting side ( 23 , 24 ) and the mounting side ( 23 ) of the retaining bolt ( 17 ) and the mounting side ( 24 ) of the tensioning or guide rail ( 7 , 8 ) of the first and second overall width (B 1 , B 2 ) have the same distance to each other in the mounting position and in the fixing position, respectively.

8. The tensioning rail or the guide rail according to claim 2 , wherein the lock projection ( 18 . 1 ) is formed by a ring web or ring bead.

9. The tensioning rail or the guide rail according to claim 2 , wherein the lock projection ( 18 , 18 . 1 ) has a height (H) not more than 10%, preferably not more than 5% and at least 1% of the diameter (D) of the opening ( 16 ).

10. The tensioning rail or the guide rail according to claim 3 , wherein the lock projection ( 18 , 18 . 1 ) has a height (H) not more than 10%, preferably not more than 5% and at least 1% of the diameter (D) of the opening ( 16 ).

11. The tensioning rail or the guide rail according to claim 2 , further comprising a second lock recess ( 22 ) arranged at a distance (M) from the first lock recess ( 21 ), said distance (M) corresponding substantially to the distance between the mounting position and the fixing position.

12. The tensioning rail or the guide rail according to claim 3 , further comprising a second lock recess ( 22 ) arranged at a distance (M) from the first lock recess ( 21 ), said distance (M) corresponding substantially to the distance between the mounting position and the fixing position.

13. The tensioning rail or the guide rail according to claim 4 , further comprising a second lock recess ( 22 ) arranged at a distance (M) from the first lock recess ( 21 ), said distance (M) corresponding substantially to the distance between the mounting position and the fixing position.

14. A tensioning rail series or a guide rail series comprising a tensioning rail or a guide rail ( 7 , 8 ) of a first overall width (B 1 ), and a tensioning rail or a guide rail of a second overall width (B 2 ), both according to claim 2 , respectively, a retaining bolt ( 17 ) which can be inserted into a respective opening ( 16 ) of both tensioning or guide rails ( 7 , 8 ), and a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) and comprising a lock projection at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position.

15. The tensioning rail series or the guide rail series according to claim 14 , wherein a carrier ( 12 , 13 ) of the tensioning or guide rail ( 7 , 8 ) and the retaining bolt ( 17 ) comprise a respective mounting side ( 23 , 24 ) and the mounting side ( 23 ) of the retaining bolt ( 17 ) and the mounting side ( 24 ) of the tensioning or guide rail ( 7 , 8 ) of the first and second overall width (B 1 , B 2 ) have the same distance to each other in the mounting position and in the fixing position, respectively.

16. A tensioning rail series or a guide rail series comprising a tensioning rail or a guide rail ( 7 , 8 ) of a first overall width (B 1 ), and a tensioning rail or a guide rail of a second overall width (B 2 ), both according to claim 3 , respectively, a retaining bolt ( 17 ) which can be inserted into a respective opening ( 16 ) of both tensioning and/or guide rails ( 7 , 8 ), and a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) and comprising a lock projection at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position.

17. The tensioning rail series or the guide rail series according to claim 16 , wherein a carrier ( 12 , 13 ) of the tensioning or guide rail ( 7 , 8 ) and the retaining bolt ( 17 ) comprise a respective mounting side ( 23 , 24 ) and the mounting side ( 23 ) of the retaining bolt ( 17 ) and the mounting side ( 24 ) of the tensioning or guide rail ( 7 , 8 ) of the first and second overall width (B 1 , B 2 ) have the same distance to each other in the mounting position and in the fixing position.

18. A tensioning rail series or a guide rail series comprising a tensioning rail or a guide rail ( 7 , 8 ) of a first overall width (B 1 ), and a tensioning rail or a guide rail of a second overall width (B 2 ), both according to claim 4 , respectively, a retaining bolt ( 17 ) which can be inserted into a respective opening ( 16 ) of both tensioning or guide rails ( 7 , 8 ), and a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) and comprising a lock projection at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position.

19. The tensioning rail series or the guide rail series according to claim 18 , wherein a carrier ( 12 , 13 ) of the tensioning or guide rail ( 7 , 8 ) and the retaining bolt ( 17 ) comprise a respective mounting side ( 23 , 24 ) and the mounting side ( 23 ) of the retaining bolt ( 17 ) and the mounting side ( 24 ) of the tensioning or guide rail ( 7 , 8 ) of the first and second overall width (B 1 , B 2 ) have the same distance to each other in the mounting position and in the fixing position, respectively.

20. A tensioning rail series or a guide rail series comprising a tensioning rail or a guide rail ( 7 , 8 ) of a first overall width (B 1 ), and a tensioning rail or a guide rail of a second overall width (B 2 ), both according to claim 5 , respectively, a retaining bolt ( 17 ) which can be inserted into a respective opening ( 16 ) of both tensioning or guide rails ( 7 , 8 ), and a lock device working between the retaining bolt ( 17 ) and the opening ( 16 ) and comprising a lock projection at the opening ( 16 ) and a lock recess ( 21 ) at the retaining bolt ( 17 ), or vice versa, which lock device secures the retaining bolt ( 17 ) in a mounting position relative to the opening ( 16 ) and at least temporarily releases the retaining bolt ( 17 ) in order to move it to a fixing position.

21. The tensioning rail or the guide rail according to claim 1 , wherein the lock projection ( 18 , 18 . 1 ) has a height (H) not more than 5% of the diameter (D) of the opening ( 16 ) and at least 1% of the diameter (D) of the opening ( 16 ).