String reel for a string trimmer, and string trimmer cutting head equipped with such a string reel or in the form of such a string reel

1. A string reel assembly having a string reel ( 1 ) for being mounted on a cutting head of a string trimmer in a rotatable manner in mowing operation, wherein

the string reel ( 1 ) is constructed as an exchangeable wearing part, onto which a number of mowing string strands ( 2 ) is wound up, two mowing string strands ( 2 ), so that in mowing operation each free thread end is pulled radially outwards by a centrifugal force and a piece of thread pulled outwards by the rotary movement in mowing operation and located at the free thread end can knock off plant stalks, wherein

the mowing string strands ( 2 ) have a greater length than the respective thread piece pulled outwards in mowing operation at the free thread end, so that the number of mowing string strands ( 2 ) can be pulled out at the free thread end after wear of the thread piece, wherein

at least one of the number of mowing string strands ( 2 ) has a different appearance in a normal consumption section ( 3 ) extending starting from the free end of the respective mowing string strand than in a reserve section ( 5 ) which can only subsequently be pulled out and is located closer to a connection point to the string reel ( 1 ), wherein

the at least one of the number of mowing string strands ( 2 ) in a warning section ( 4 ) situated between its normal consumption section ( 3 ) and its reserve section ( 5 ) has a different appearance than in its normal consumption section ( 3 ) and in its reserve section ( 5 ).

2. The string reel ( 1 ) according to claim 1 , wherein each of the number of mowing string strands ( 2 ) has a different appearance in a normal consumption section ( 3 ) extending starting from the free end of the respective mowing string strand than in a reserve section ( 5 ) which can only subsequently be pulled out and is located closer to the connection point to the string reel ( 1 ), wherein each of the number of mowing string strands ( 2 ) in a warning section ( 4 ) situated between its normal consumption section ( 3 ) and its reserve section ( 5 ) has a different appearance than in its normal consumption section ( 3 ) and in its reserve section ( 5 ).

3. The string reel ( 1 ) according to claim 2 , wherein the reserve section ( 5 ) extends in the direction of the free thread end starting from the connecting point to the string reel ( 1 ).

4. The string reel ( 1 ) according to claim 1 , wherein the at least one of the number of mowing string strands ( 2 ) in its reserve section ( 5 ) varies in colour relative to its normal consumption section ( 3 ) and also relative to its warning section ( 4 ).

5. The string reel ( 1 ) according to claim 2 , wherein each of the number of mowing string strands ( 2 ), in its reserve section ( 5 ), varies in colour relative to its normal consumption section ( 3 ) and also relative to its warning section ( 4 ).

6. The string reel ( 1 ) according to claim 5 , wherein each of the number of mowing string strands ( 2 ) is dyed in its reserve section ( 5 ), in its warning section ( 4 ) and in its normal consumption section ( 3 ).

7. The string reel ( 1 ) according to 6 , wherein the reserve portion ( 5 ) of each of the number of mower thread strands ( 2 ) is red.

8. The string reel ( 1 ) according to claim 7 , wherein the normal consumption portion of each of the number of mower thread strands ( 2 ) is green.

9. The string reel ( 1 ) according to claim 8 , wherein the warning portion ( 4 ) of each of the number of mower thread strands ( 2 ) is yellow or orange.

10. The string reel ( 1 ) according to claim 5 , wherein the length of the reserve section ( 5 ) is less than or equal to the length of the normal consumption section ( 3 ).

11. The string reel ( 1 ) according to claim 10 , wherein the length of the reserve section ( 5 ) is between 50 and 100 cm, the length of the warning section ( 4 ) is between 50 and 100 cm and each of the number of mowing string strands ( 2 ) is between 250 and 400 cm long, preferably 300 cm long.

12. The string reel assembly of claim 1 having a cutting head for a string trimmer having a housing and the string reel ( 1 ) contained therein, the housing being in several parts so that the string reel ( 1 ) is accessible for replacement, and the housing having in its peripheral wall at least one thread opening through which a respective mowing string strand ( 2 ) is guided.