초록 ▼

A transmission for motor vehicles having a conical-disc band transmission placed in a casing, a reduction gear and, if necessary, a differential. In order to achieve an optimum transmission-ratio range for motor vehicles and good efficiency, the reduction gear contains two forward speeds and is conn

A transmission for motor vehicles having a conical-disc band transmission placed in a casing, a reduction gear and, if necessary, a differential. In order to achieve an optimum transmission-ratio range for motor vehicles and good efficiency, the reduction gear contains two forward speeds and is connected to a fixed gear on the power take-off shaft by means of an additional fixed gear. The driving disc pairs of the conical-disc band transmission are located directly on a section of the drive shaft and on the power take-off shaft. The reduction gear and the conical-disc band transmission can be actuated by means of conventional synchronous clutches. The transmission case is longitudinally fitted with a center wall which subdivides the space into two compartments, one of which is closed by a front cover and the other by a rear cover. While one compartment contains the reduction gear and, if necessary, the differential, the other compartment contains the conical-disc band transmission.

대표청구항 ▼

1. A transmission for motor vehicles comprising: a case, a conical-disc band transmission enclosed in said case, said band transmission including an output disc pair and a driving disc pair, a reduction gear having first and second forward speeds enclosed in said case, a drive shaft to which o

1. A transmission for motor vehicles comprising: a case, a conical-disc band transmission enclosed in said case, said band transmission including an output disc pair and a driving disc pair, a reduction gear having first and second forward speeds enclosed in said case, a drive shaft to which one gear of said reduction gear or said driving disc pair of said band transmission can be connected, a power take-off shaft disposed parallel to said drive shaft, said power take-off shaft being connected to said output disc pair, an intermediate shaft including at least one gear, said gear being couplable with gears on said drive shaft and on said power take-off shaft, said reduction gear including a first pair of gears mounted on said drive shaft for the first and second forward speeds, said driving disc pair being mounted on said drive shaft, said intermediate shaft including a second pair of gears for the first and second forward speeds and a fixed gear, said power take-off shaft including a fixed gear engaging said intermediate shaft fixed gear, said power take-off shaft fixed gear transferring mechanical power from said drive shaft to said power take-off shaft when said drive shaft is connected to said reduction gear, a synchronous clutch for shifting said first pair of gears and said second pair of gears for the first and second forward speeds of said reduction gear, a differential integrally built into said case, an intermediate wall positioned in said case and dividing said case into a first compartment and a second compartment, a bearing means for said drive shaft, said intermediate shaft and said power take-off shaft, said intermediate wall supporting said bearing means, a first cover for closing off said first compartment, said first cover supporting said drive shaft and said intermediate shaft, a second cover for closing off said second compartment, said second cover supporting said drive shaft and said power take-off shaft, said disc band transmission being disposed in said second compartment, said differential and said reduction gear being disposed in said first compartment, said intermediate wall including a bulge segment extending into said second compartment, said bulge segment defining a bulge area in said first compartment, said intermediate shaft including a fixed gear disposed in said bulge area, said power take-off shaft including a fixed gear corresponding to said intermediate shaft fixed gear and disposed in said second compartment, and said intermediate shaft fixed gear and said power take-off shaft fixed gear engaging each other through an opening in said bulge segment. 2. The transmission according to claim 1 wherein, said power take-off shaft drives said differential by a drive pinion means. 3. The transmission according to claim 2 wherein, said differential includes a power take-off means positioned at right angles to said drive shaft and to said power take-off shaft, said intermediate shaft is positioned substantially horizontally next to said drive shaft, said differential lies below said intermediate shaft, said differential includes a bevel gear engaging said drive pinion means, and said power take-off shaft, said drive pinion means and said bevel gear are located at a greater horizontal distance from said drive shaft than said intermediate shaft. 4. The transmission according to claim 3 further comprising: said drive shaft including a rear section in the area of said intermediate wall, and said drive shaft and said rear section being telescoped within each other. 5. The transmission according to claim 1 further comprising: said drive shaft including a rear section in the area of said intermediate wall, and said drive shaft and said rear section being telescoped within each other. 6. A transmission for motor vehicles comprising: a drive shaft, a first pair of gears mounted on said drive shaft, an intermediate shaft associated with said drive shaft, a second pair of gears attached to said intermediate shaft, a synchronous clutch mechanism for shifting said first pair of gears and said second pair of gears for providing first and second forward speeds, a power take-off shaft disposed parallel to said drive shaft, an intermediate shaft fixed gear attached to said intermediate shaft, an power take-off shaft fixed gear attached to said power take-off shaft and engaging said intermediate shaft fixed gear, a conical-disc band transmission including a driving disc pair mounted to said drive shaft and further including an output disc pair connected to said power take-off shaft and disposed so that said intermediate shaft is positioned between said driving disc pair and said output disc pair, a case enclosing said conical-disc band transmission, a differential integrally built into said case, an intermediate wall positioned in said case and dividing said case into a first compartment and a second compartment, a bearing means supported by said intermediate wall for said drive shaft, said intermediate shaft and said power take-off shaft, a first cover for closing off said first compartment, said first cover supporting said drive shaft and said intermediate shaft, a second cover for closing off said second compartment, said second cover supporting said drive shaft and said power take-off shaft, said conical-disc band transmission being disposed in said second compartment, said differential and said first and second pairs of gears being disposed in said first compartment, said intermediate wall including a bulge segment extending into said second compartment, said bulge segment defining a bulge area in said first compartment, said intermediate shaft fixed gear being disposed in said bulge area, said power take-off shaft fixed gear being disposed in said second compartment, and said intermediate shaft fixed gear and said power take-off shaft fixed gear engaging each other through an opening in said bulge segment. 7. The transmission of claim 6 including, said conical-disc band transmission being disposed generally perpendicular to said drive shaft. 8. The transmission of claim 6 including, a synchronous clutch means mounted on said drive shaft and engaging said driving disc pair of said disc band transmission for shifting said conical-disc band transmission. 9. The transmission of claim 6 including, a differential driven by said power take-off shaft by a drive pinion means, said differential including a power take-off means positioned at right angles to said drive shaft and to said power take-off shaft, said intermediate shaft being positioned substantially horizontally next to said drive shaft, said differential being positioned below said intermediate shaft and including a bevel gear engaging said drive pinion means, and said power take-off shaft, said drive pinion means, and said bevel gear being located at a greater horizontal distance from said drive shaft than said intermediate shaft. 10. The transmission of claim 9 including, a case enclosing said conical-disc band transmission, and said case including at least a first chamber in which said differential, said first pair of gears and said second pair of gears are positioned. 11. A transmission for motor vehicles comprising: a drive shaft rotatable about a first axis, a first pair of gears rotatably fixed with said drive shaft, an intermediate shaft associated with said drive shaft and rotatable about a second axis, a second pair of gears freely rotatable on said intermediate shaft, said first pair of gears rotatably engaging said second pair of gears, a synchronous clutch mechanism mounted on said intermediate shaft for shifting said first pair of gears and said second pair of gears for thereby providing first and second forward speeds, a power output shaft disposed parallel to said first axis and rotatable about a third axis, said second axis being disposed between said first and third axes, an intermediate shaft fixed gear mounted to said intermediate shaft, a power output shaft fixed gear mounted to said power output shaft and engaging said intermediate shaft fixed gear, and a continuously-variable belt-type transmission positioned generally parallel to said first and third axes and including a driving pulley connected to said drive shaft and further including an output pulley positioned on said power output shaft. 12. The transmission of claim 11 including, a synchronous clutch means operatively connected to said continuously-variable belt-type transmission for shifting said continuously-variable belt-type transmission. 13. The transmission of claim 12 including, said synchronous clutch means being mounted on said drive shaft. 14. The transmission of claim 12 including, said synchronous clutch means engaging said driving pulley. 15. The transmission of claim 13 including, said synchronous clutch means engaging said driving pulley. 16. The transmission of claim 11 including, a differential operatively connected to and driven by said power output shaft. 17. The transmission of claim 16 including, a drive pinion means operatively connected to said power output shaft and to said differential for driving said differential. 18. The transmission of claim 17 including, said differential including a bevel gear engaging said drive pinion means. 19. The transmission of claim 17 including, said power output shaft, said drive pinion means and said bevel gear being located at a greater horizontal distance from said drive shaft than said intermediate shaft. 20. The transmission of claim 16 including, said differential including a power take-off means positioned at right angles to said first and third axes. 21. The transmission of claim 16 including, said second axis being positioned substantially horizontally next to said first axis, and said differential being positioned below said second axis. 22. The transmission of claim 11 including, a case enclosing said continuously-variable belt-type transmission, and said case including a first chamber, a differential integrally built into said case, and said differential and said first and second pairs of gears being positioned in said first chamber.