High-pressure cleaning apparatus

Abstract

In a high-pressure cleaning apparatus comprising a housing, a drive unit and a winding device for winding and unwinding leads which are led from stationary terminal connections to movable terminal connections, in order to enable safe and simple winding and unwinding of leads which lead away from the high-pressure cleaning apparatus, it is proposed that the winding device comprise a winding drum, that the winding drum comprise at least two separate winding areas, that an electric connecting cable for making a connection to a terminal connection which is stationary relative to the winding device be windable in the one winding area, that an electric connection cable for making a connection to a terminal connection which is movable relative to the winding device be windable in the other winding area, that an end of the connecting cable on the drum and an end of the connection cable on the drum form a direct connection point, that the connecting cable form a loop, that the winding area of the connecting cable be surrounded by a cable housing, in which also the loop has sufficient space in each wind position of the winding device, and that the other end of the connecting cable be led out of the cable housing through a stationary part of the cable housing and be fixed on the cable housing.

What is claimed is:  
     
         1 . High-pressure cleaning apparatus comprising a housing, a drive unit and a winding device ( 1 ) for winding and unwinding leads, which are led from stationary terminal connections to movable terminal connections, characterized in that the winding device ( 1 ) comprises a winding drum ( 4 ,  5 ,  7 ,  13 ), in that the winding drum ( 4 ,  5 ,  7 ,  13 ) comprises at least two separate winding areas ( 11 ,  16 ), which are only wide enough for single-layer cables to be windable therein lying one above the other in layers, in that an electric connecting cable ( 12 ) for making a connection to a terminal connection which is stationary relative to the winding device ( 1 ) is windable in the one winding area ( 11 ), in that an electric connection cable ( 22 ) for making a connection to a terminal connection which is movable relative to the winding device ( 1 ) is windable in the other winding area ( 16 ), in that an end of the connecting cable ( 12 ) on the drum and an end of the connection cable ( 22 ) on the drum form a direct connection point, in that the connecting cable ( 12 ) forms a loop ( 26 ), in that the winding area ( 11 ) of the connecting cable ( 12 ) is surrounded by a cable housing ( 2 ,  7 ,  9 ,  10 ), in which also the loop ( 26 ) has sufficient space in each wind position of the winding device ( 1 ), and in that the other end of the connecting cable ( 12 ) is led out of the cable housing ( 2 ,  7 ,  9 ,  10 ) through a stationary part ( 24 ) of the cable housing ( 2 ,  7 ,  9 ,  10 ) and is fixed on the cable housing ( 2 ,  7 ,  9 ,  10 ).  
     
     
         2 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the cable housing ( 2 ,  7 ,  9 ,  10 ) delimits the winding area ( 11 ) of the connecting cable ( 12 ) in a radial direction such that the loop ( 26 ) when unwound to a maximum extent abuts on the radial delimitation ( 10 ) of the winding area ( 11 ).  
     
     
         3 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the winding drum ( 4 ,  5 ,  7 ,  13 ) has an essentially radially symmetrical cross section.  
     
     
         4 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the cable housing ( 2 ,  7 ,  9 ,  10 ) has an essentially radially symmetrical cross section.  
     
     
         5 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the winding drum ( 4 ,  5 ,  7 ,  13 ) is surrounded essentially radially symmetrically by the cable housing ( 2 ,  7 ,  9 ,  10 ).  
     
     
         6 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the drum diameter of the winding area ( 16 ) of the connection cable ( 22 ) is greater than the drum diameter of the winding area ( 11 ) which accommodates the connecting cable ( 12 ).  
     
     
         7 . High-pressure cleaning apparatus as defined in    claim 2   , characterized in that the drum diameter of the winding area ( 16 ) of the connection cable ( 22 ) is greater than the drum diameter of the winding area ( 11 ) which accommodates the connecting cable ( 12 ).  
     
     
         8 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the cable housing ( 2 ,  7 ,  9 ,  10 ) is protected against spray water.  
     
     
         9 . High-pressure cleaning apparatus as defined in    claim 2   , characterized in that the cable housing ( 2 ,  7 ,  9 ,  10 ) is protected against spray water.  
     
     
         10 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that in an initial position, the connecting cable ( 12 ) is wound in the same direction as the connection cable ( 22 ) completely on the winding drum ( 4 ,  5 ,  7 ,  13 ), in a middle position is completely unwound, whereby a maximum loop ( 26 ) is formed, and upon further movement of the winding drum ( 4 ,  5 ,  7 ,  13 ) is wound on again completely in the reverse winding direction with the loop ( 26 ) being drawn in.  
     
     
         11 . High-pressure cleaning apparatus as defined in    claim 2   , characterized in that in an initial position, the connecting cable ( 12 ) is wound in the same direction as the connection cable ( 22 ) completely on the winding drum ( 4 ,  5 ,  7 ,  13 ), in a middle position is completely unwound, whereby a maximum loop ( 26 ) is formed, and upon further movement of the winding drum ( 4 ,  5 ,  7 ,  13 ) is wound on again completely in the reverse winding direction with the loop ( 26 ) being drawn in.  
     
     
         12 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the connecting cable ( 12 ) is approximately half the length of the connection cable ( 22 ).  
     
     
         13 . High-pressure cleaning apparatus as defined in    claim 2   , characterized in that the connecting cable ( 12 ) is approximately half the length of the connection cable ( 22 ).  
     
     
         14 . High-pressure cleaning apparatus as defined in    claim 10   , characterized in that the connecting cable ( 12 ) is approximately half the length of the connection cable ( 22 ).  
     
     
         15 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the drum cross section of the winding area ( 11 ) of the connecting cable ( 12 ) has a heart-shaped indentation ( 23 ), and in that one end of the connecting cable ( 12 ) is led via the indentation ( 23 ) to the connection point with the connection cable ( 22 ).  
     
     
         16 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the connecting cable ( 12 ) is formed by a flat ribbon cable.  
     
     
         17 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the connection cable ( 22 ) is formed by a round cable.  
     
     
         18 . High-pressure cleaning apparatus as defined in    claim 16   , characterized in that the connection cable ( 22 ) is formed by a round cable.  
     
     
         19 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the winding drum ( 4 ,  5 ,  7 ,  13 ) is adapted to be held in the initial position relative to the housing ( 2 ) by a clamping device ( 20 ,  21 ).  
     
     
         20 . High-pressure cleaning apparatus as defined in    claim 19   , characterized in that the clamping device is formed by a spiral spring ( 21 ), one end of which is fixed on the winding drum ( 4 ,  5 ,  7 ,  13 ) and the other on the housing ( 2 ).  
     
     
         21 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that a reverse lock ( 25 ) is provided on the winding drum ( 4 ,  5 ,  7 ,  13 ).  
     
     
         22 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that one end of the connecting cable ( 12 ) is connected to the drive unit.  
     
     
         23 . High-pressure cleaning apparatus as defined in    claim 1   , characterized in that the cable housing ( 2 ,  7 ,  9 ,  10 ) is part of the housing.