대표
청구항
▼
The invention claimed is: 1. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counte...
The invention claimed is: 1. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counter body (5), wherein the roller element (10) comprises drive means, which engage in the roller unit (2) and drive the roller unit (2) relative to the central body (1), and wherein the roller unit (2) is provided for rolling-off on a further body (5, 24), wherein the roller unit (2) and the further body (5) comprise means (64, 66; 37, 55; 87, 55) shaped corresponding to each other and meshing together for the positive interlocking force transmission. 2. The roller element (10) in accordance with claim 1, wherein the drive means (6) comprises protruding drive elements (61), which are designed for engaging in corresponding elements of the roller unit (2) and with this for driving the roller unit (2) relative to the central body (1). 3. The roller element (10) in accordance with claim 2, wherein the protruding drive elements (61) engage between the rollers (3). 4. The roller element (10) in accordance with claim 3, wherein the rollers (3) comprise grooves (36) extending in the circulating direction, which are designed for receiving the protruding elements (61). 5. The roller element (10) in accordance with claim 2, wherein the protruding drive elements engage in driver elements of bearing shafts (31) or in driver elements of chain link plates (4), which connect the bearing shafts 31 with one another. 6. The roller element (10) in accordance with claim 2, wherein the drive means (6) is a gear wheel (62), and several of its teeth engage in the roller unit (2) from the internal side. 7. The roller element (10) in accordance with claim 1, wherein the roller unit (2) comprises means for achieving a minimum spacing between the rollers (3), which prevent that successive rollers (3) come into contact with one another and which enable solely a pushing, not, however, a pulling of a succession of rollers (3). 8. The roller element (10) in accordance with claim 1, wherein the roller unit (2) comprises a flexible and elastic means for achieving constant spacing between the rollers (3), which connects bearing shafts (31) of the rollers (3) with one another. 9. The roller element (10) in accordance with claim 1, wherein the rollers (3) are essentially cylindrical and comprise a toothing (64), and the surfaces opposite the toothing (64) of the rollers (3) on the counter body (5), respectively, on a runner belt (24) or on a creeper chain respectively comprise a corresponding toothing (66). 10. The roller element (10) in accordance with claim 9, wherein also the surfaces opposite the toothing (64) of the rollers (3) on the central body (1) comprise a corresponding toothing (65). 11. A drive unit, comprising a roller element (10) in accordance with claim 9, and a counter body (5), wherein the roller element (10) and the counter body (5) comprise means (64, 66; 37, 55; 87, 55) shaped corresponding to each other and meshing together for the positive interlocking force transmission. 12. The drive unit in accordance with claim 11, wherein the counter body (5) is designed as a rack, which along its main direction of expanse comprises deepened engagement openings (55) for receiving the rollers (3), in particular in a section of grooves (36) of the rollers (3), and wherein the rollers (3) during the rolling-off of the roller element (10) on the counter body (5) come to lie in the engagement openings (55). 13. The drive unit in accordance with claim 11, wherein the counter body (5) is designed as a rack, which along its linear main direction of expanse comprises a toothing, which corresponds to the toothing (64) of the rollers (3) and the toothing (64) of the rollers (3) during the rolling-off of the roller element (10) on the counter body (5) engages toothing (66) of the counter body (5). 14. The drive unit in accordance with claim 11, wherein the counter body (5) is designed as a rack, which along its linear main direction of expanse comprises deepened engagement openings (55) for receiving drivers (87) of the lateral spacer bodies (84) of the roller element (10), and wherein the drivers (87) during the rolling-off of the roller element (10) on the counter body (5) engage in the engagement openings (55). 15. The drive unit in accordance with claim 11, wherein the drive unit comprises a further counter body (5'), which relative to the counter body (5) is arranged opposite the roller element (10) and which also comprises means (64, 66; 37, 55; 87, 55) shaped corresponding to the roller unit (2) and meshing for the positive interlocking force transmission on to the roller element (10). 16. The roller element (10) in accordance with claim 1, wherein the roller unit (2), and in particular lateral spacer bodies (84) or a cage belt (9), comprise radially protruding drivers (87), which are provided for the engaging in an engagement opening (55) of the further body (5). 17. The roller element (10) in accordance with claim 1, wherein the rollers (3) are formed as a single part and in preference out of plastic material. 18. The roller element (10) in accordance with claim 1, wherein the at least one central body (1) comprises means (71, 72) for the holding, at times, of articles to be conveyed. 19. The roller element (10) in accordance with claim 1, wherein the roller unit (2) in itself and/or in its movability relative to the central body (1) comprises play. 20. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counter body (5), wherein the roller element (10) comprises drive means, which engage in the roller unit (2) and drive the roller unit (2) relative to the central body (1), wherein the drive means (6) comprises protruding drive elements (61), which are designed for engaging in corresponding elements of the roller unit (2) and with this for driving the roller unit (2) relative to the central body (1), and wherein the drive means (6) is a chain of drive cams (61), which from inside or from outside engage in the roller unit (2) and drive the roller unit. 21. The roller element (10) in accordance with claim 20, wherein the drive cams (61) at times are not in engagement with the roller unit (2) and, controlled by a radial cam (67), are brought into engagement with the roller unit (2). 22. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counter body (5), wherein the roller element (10) comprises drive means, which engage in the roller unit (2) and drive the roller unit (2) relative to the central body (1), wherein the roller unit (2) comprises means for achieving a minimum spacing between the rollers (3), which prevent that successive rollers (3) come into contact with one another and which enable solely a pushing, not, however, a pulling of a succession of rollers (3), and wherein the roller unit (2), as means for achieving a minimum spacing between the rollers (3), comprises lateral spacer bodies (84), and the rollers (3) on both sides in an axial direction are respectively supported in a lateral spacer body (84) moving along with it, and the lateral spacer bodies (84) in the moving direction are larger than the roller diameter, by means of which the rollers (3) are spaced apart from one another. 23. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counter body (5), wherein the roller element (10) comprises drive means, which engage in the roller unit (2) and drive the roller unit (2) relative to the central body (1), wherein the roller unit (2) comprises a flexible and elastic means for achieving constant spacing between the rollers (3), which connects bearing shafts (31) of the rollers (3) with one another, and wherein the flexible means is a cage belt (9), which comprises ring-like holding zones (91), in which the rollers (3) are inserted, and link zones (92), which flexibly connect the holding zones (91) to one another, wherein the cage belt (9) is manufactured out of a plastic material as a single part. 24. The roller element (10) in accordance with claim 23, wherein the drive means (62) engages in the cage belt (9) and drives the cage belt. 25. The roller element (10) in accordance with claim 23, wherein the drive means (62) engages in a synchronous belt (38), and the synchronous belt (38) in turn engages in the counter body (5), in order to drive the central body (1) relative to the counter body (5). 26. A driven roller element, comprising: a central body (1), as well as a roller unit (2) extending around the central body (1), which roller unit (2) is arranged as extending on a non-circular continuous track around the central body (1) and movable around the central body (1) through the rolling-off of rollers (3) of the roller unit (2) on an internal side of the roller unit (2), and the rollers (3), on an external side of the roller unit (2) on one side of the central body (1), being provided for rolling-off on a rigid counter body (5), wherein the roller element (10) comprises drive means, which engage in the roller unit (2) and drive the roller unit (2) relative to the central body (1), wherein the drive means (6) comprises protruding drive elements (61), which are designed for engaging in corresponding elements of the roller unit (2) and with this for driving the roller unit (2) relative to the central body (1), wherein the protruding drive elements (61) engage between the rollers (3), wherein the rollers (3) comprise grooves (36) extending in the circulating direction, which are designed for receiving the protruding elements (61), and wherein between the roller unit (2) and the counter body (5) a runner belt (24) or a creeper chain is arranged, which extends around the outside of the roller unit (2), and over the whole circumference (23) of the roller unit (2) and sits close to the roller unit. 27. The roller element (10) in accordance with claim 26, wherein the runner belt (24) or the creeper chain comprises a guide bridge (28), which engages in the circumferential guide grooves (36) of the rollers (3).
