Cylinder lawn mower and cylinder unit intended therefor

Abstract

A cylinder unit ( 1 ) for a cylinder lawn mower, comprising a fixedly mounted abutment ( 3 ), a cylinder means ( 2 ), which is rotatable about a longitudinal axis (L) and which is provided with at least one knife ( 6 ), and an insertion means ( 7 ). Each knife is ( 6 ) by rotation of the cylinder means ( 2 ) movable to a cutting position (K), in which the knife ( 6 ) cooperates with the abutment ( 3 ) to allow grass cutting, and the insertion means ( 7 ) is by rotation of the cylinder means ( 2 ) arranged for engaging and inserting grass into the abutment ( 3 ). The insertion means ( 7 ) comprises a plurality of discs ( 5 ), which are concentrically arranged about and equidistantly arranged along said longitudinal axis (L).

1 . A cylinder unit for a cylinder lawn mower, comprising 
 a fixedly mounted abutment,    a cylinder means, which is rotatable about a longitudinal axis (L) and which is provided with at least one knife, and    an insertion means,    each knife by rotation of the cylinder means being movable to a cutting position (K), in which the knife cooperates with the abutment to allow grass cutting, and    the insertion means by rotation of the cylinder means being arranged for engaging and inserting grass into the abutment,    wherein the insertion means comprises a plurality of discs, which are concentrically arranged about and equidistantly arranged along said longitudinal axis (L).    
   
   
       2 . The cylinder unit as claimed in  claim 1 , wherein the insertion means is arranged for said engagement and insertion of grass along substantially the entire length of the cylinder means along the longitudinal axis (L) of the cylinder means.  
   
   
       3 . The cylinder unit as claimed in  claim 1 , wherein said discs support the at least one knife.  
   
   
       4 . The cylinder unit as claimed in  claim 1 , wherein the discs have peripheral teeth.  
   
   
       5 . The cylinder unit as claimed in  claim 4 , wherein a number of the teeth on each disc are set.  
   
   
       6 . The cylinder unit as claimed in  claim 5 , wherein the set teeth of each disc are set in two opposite directions.  
   
   
       7 . The cylinder unit as claimed in  claim 4 , wherein the teeth of each disc are located radially on a level with each knife.  
   
   
       8 . The cylinder unit as claimed in  claim 1 , wherein the insertion means is made of a metallic material.  
   
   
       9 . The cylinder unit as claimed in  claim 1 , wherein the insertion means has a wear-resistant surface layer.  
   
   
       10 . The cylinder unit as claimed in  claim 4 , wherein the teeth of each disc are made of a metallic material.  
   
   
       11 . the cylinder unit as claimed in  claim 4 , wherein the teeth of each disc have a wear-resistant surface layer.  
   
   
       12 . The cylinder unit as claimed in  claim 4 , wherein the teeth are replaceable.  
   
   
       13 . The cylinder unit as claimed in  claim 1 , further comprising a second abutment arranged, seen in the direction of rotation (P 1 ) of the cylinder means, after the first abutment, said first abutment being located substantially under the cylinder means.  
   
   
       14 . The cylinder unit as claimed in  claim 13 , wherein a guiding plate is arranged to convey cut grass from the first abutment to the second abutment.  
   
   
       15 . The cylinder unit as claimed in  claim 1 , wherein the cylinder means comprises a stopping means which prevents the abutment from being displaced radially inwards.  
   
   
       16 . The cylinder unit as claimed in  claim 15 , wherein the stopping means comprises at least one circular plate which is supported by a shaft and has a continuous peripheral edge arranged immediately radially inwardly of the abutment.  
   
   
       17 . The cylinder lawn mower as claimed in  claim 1 , further comprising at least one cylinder unit.  
   
   
       18 . The cylinder lawn mower as claimed in  claim 1 , further comprising a first cylinder unit and a second cylinder unit, the second cylinder unit being arranged, seen in the travelling direction (P 2 ) of the cylinder lawn mower, after the first cylinder unit.  
   
   
       19 . The cylinder lawn mower as claimed in  claim 18 , wherein a guiding plate is arranged to convey cut grass from the first cylinder unit to the second cylinder unit.  
   
   
       20 . The cylinder lawn mower as claimed in  claim 19 , wherein the second cylinder unit comprises an abutment, said guiding plate being arranged to convey cut grass to said abutment.  
   
   
       21 . The cylinder lawn mower as claimed in  claim 17 , wherein the cylinder lawn mower is of a ride-on type.