Linear movement device with omega drive

A linear movement device comprising:

• a housing;
• and
• a carriage which can move in a longitudinal direction with respect to the housing, wherein:
• the housing has a U-shaped cross-sectional shape and extends in the longitudinal direction, with the result that the housing bounds a guide cavity;
• the guide cavity is covered with a toothed belt which extends in the longitudinal direction;
• the toothed belt is attached at both ends to the housing with the result that said toothed belt defines a toothed belt plane;
• at least one separate guide rail which extends in the longitudinal direction is arranged within the guide cavity, on which guide rail at least one separate guiding carriage is mounted in a longitudinally movable fashion, which guiding carriage is permanently connected to the carriage;
• a first and a second deflection wheel, which deflect the toothed belt out of the toothed belt plane, are rotatably attached to the carriage;
• a rotatable drive wheel, which is in drive-transmitting engagement with the toothed belt, is arranged between the first and the second deflection wheel;
• the carriage has a single-piece carriage base body which extends in the longitudinal direction;
• said carriage base body is configured as a closed tube essentially over its entire length, with the result that it bounds a carriage cavity, wherein the guiding carriage is attached to the outside of the carriage base body;
• the toothed belt is guided through the carriage cavity;
• the first and second deflection wheels and the drive wheel are arranged within the carriage cavity;
• the carriage base body has a continuous bottom wall to which the guiding carriage is attached;
• the bottom wall has a first bottom section and a plurality of second bottom sections;
• the first bottom section is arranged in the region of the drive wheel, while the second bottom sections are arranged in the region of the first and second deflection wheels;
• the thickness of the first bottom section is made so large that the toothed belt plane intersects the first bottom section;
• and
• the thickness of the second bottom sections is made so small that they are arranged completely underneath the toothed belt plane.

A linear movement device comprising:

• a housing;
• and
• a carriage which can move in a longitudinal direction with respect to the housing, wherein:
• the housing has a U-shaped cross-sectional shape and extends in the longitudinal direction, with the result that the housing bounds a guide cavity;
• the guide cavity is covered with a toothed belt which extends in the longitudinal direction;
• the toothed belt is attached at both ends to the housing with the result that said toothed belt defines a toothed belt plane;
• at least one separate guide rail which extends in the longitudinal direction is arranged within the guide cavity, on which guide rail at least one separate guiding carriage is mounted in a longitudinally movable fashion, which guiding carriage is permanently connected to the carriage;
• a first and a second deflection wheel, which deflect the toothed belt out of the toothed belt plane, are rotatably attached to the carriage;
• a rotatable drive wheel, which is in drive-transmitting engagement with the toothed belt, is arranged between the first and the second deflection wheel;
• the carriage has a single-piece carriage base body which extends in the longitudinal direction;
• said carriage base body is configured as a closed tube essentially over its entire length, with the result that it bounds a carriage cavity, wherein the guiding carriage is attached to the outside of the carriage base body;
• the toothed belt is guided through the carriage cavity;
• the first and second deflection wheels and the drive wheel are arranged within the carriage cavity;
• and
• the carriage base body runs parallel to the toothed belt in the region of the drive wheel, at such a short distance that the toothed belt is prevented from jumping over at the drive wheel.