TRANSMISSION
First Claim
1. A transmission comprisinga first input shaft (112) and a second input shaft (113) disposed coaxially with each other,a first clutch (Co) for transmitting the driving force of an engine (E) to the first input shaft (112),a second clutch (Ce) for transmitting the driving force of the engine (E) to the second input shaft (113),an output shaft (115) disposed in parallel to the first and second input shafts (112, 113),reversing means (145:
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164) for transmitting the driving force by reversing the rotational direction between the first input shaft (112) and the second input shaft (113),an input gear (120, 121;
151, 152) provided on one of the first and second input shafts (112, 113), andan output gear (126, 127;
155, 156) provided on the output shaft (115) and always operatively connected to the input gear (120, 121;
151, 152),when establishing a predetermined forward side gear position, the driving force of the engine (E) being transmitted to a driven wheel (W) via one of the first and second clutches (Co, Ce), the input gear (120, 121;
151, 152) provided on one of the first and second input shafts (112, 113), and the output gear (126, 127;
155, 156) provided on the output shaft (115), and when establishing a reverse gear position, the driving force of the engine (E) being transmitted to the driven wheel (W) via the other of the first and second clutches (Co, Ce), the other of the first and second input shafts (112, 113), the reversing means (145;
164), the input gear (120, 121;
151, 152) provided on said on the first and second input shafts (112, 113), and the output gear (126, 127;
155, 156) provided on the output shaft (115),an idle shaft (116) and a countershaft (114) are disposed in parallel to the first and second input shafts (112, 113), said other of the first and second input shafts (112, 113) is always operatively connected to the countershaft (114) via a transmission gear train (117, 119, 118), an intermediate gear (123, 124) provided on the countershaft (114) is always operatively connected to the output gear (126, 127), andwhen establishing a forward side gear position, the driving force of the engine (E) is transmitted to the driven wheel (W) via said other of the first and second clutches (Co, Ce), said other of the first and second input shafts (112, 113), the transmission gear train (117, 119, 118), the intermediate gear (123, 124), and the output gear (126, 127).
1 Assignment
0 Petitions
Accused Products
Abstract
A twin clutch type transmission in which, when establishing a reverse gear position, the driving force of an engine (E) is transmitted to driven wheels (W, W) via the path: even-numbered gear clutch (Ce)→second input shaft (13)→second input shaft gear (22)→idle shaft second gear (42)→idle shaft first gear (41)→first countershaft first gear (23)→first countershaft (14)→first countershaft second gear (24)→third countershaft second gear (34)→first speed-third speed synchronizing device (36)→third countershaft (16)→third countershaft third gear (35)→second output shaft gear (46)→second output shaft (19)→final drive gear (44)→final driven gear (48)→differential gear (47). When establishing a first speed gear position by engaging an odd-numbered gear clutch (Co), the whole of the driving force transmission path on the downstream side of the first countershaft first gear (23) is shared with that when establishing the reverse gear position, thus enabling the weight and dimensions of the transmission to be reduced effectively.
22 Citations
4 Claims
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1. A transmission comprising
a first input shaft (112) and a second input shaft (113) disposed coaxially with each other, a first clutch (Co) for transmitting the driving force of an engine (E) to the first input shaft (112), a second clutch (Ce) for transmitting the driving force of the engine (E) to the second input shaft (113), an output shaft (115) disposed in parallel to the first and second input shafts (112, 113), reversing means (145: -
164) for transmitting the driving force by reversing the rotational direction between the first input shaft (112) and the second input shaft (113),
an input gear (120, 121;
151, 152) provided on one of the first and second input shafts (112, 113), andan output gear (126, 127;
155, 156) provided on the output shaft (115) and always operatively connected to the input gear (120, 121;
151, 152),when establishing a predetermined forward side gear position, the driving force of the engine (E) being transmitted to a driven wheel (W) via one of the first and second clutches (Co, Ce), the input gear (120, 121;
151, 152) provided on one of the first and second input shafts (112, 113), and the output gear (126, 127;
155, 156) provided on the output shaft (115), and when establishing a reverse gear position, the driving force of the engine (E) being transmitted to the driven wheel (W) via the other of the first and second clutches (Co, Ce), the other of the first and second input shafts (112, 113), the reversing means (145;
164), the input gear (120, 121;
151, 152) provided on said on the first and second input shafts (112, 113), and the output gear (126, 127;
155, 156) provided on the output shaft (115),an idle shaft (116) and a countershaft (114) are disposed in parallel to the first and second input shafts (112, 113), said other of the first and second input shafts (112, 113) is always operatively connected to the countershaft (114) via a transmission gear train (117, 119, 118), an intermediate gear (123, 124) provided on the countershaft (114) is always operatively connected to the output gear (126, 127), and when establishing a forward side gear position, the driving force of the engine (E) is transmitted to the driven wheel (W) via said other of the first and second clutches (Co, Ce), said other of the first and second input shafts (112, 113), the transmission gear train (117, 119, 118), the intermediate gear (123, 124), and the output gear (126, 127).
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164) for transmitting the driving force by reversing the rotational direction between the first input shaft (112) and the second input shaft (113),
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2. A transmission comprising
a first input shaft (12) and a second input shaft (13) disposed coaxially with each other, a first clutch (Co) for transmitting the driving force of an engine (E) to the first input shaft (12), a second clutch (Ce) for transmitting the driving force of the engine (E) to the second input shaft (13), a first countershaft (14), a second countershaft (15), and an idle shaft (18) disposed in parallel to the first and second input shafts (12, 13), a first gear pair (21, 23) for transmitting rotation of the first input shaft (12) to the first countershaft (14), a second gear pair (22, 28) for transmitting rotation of the second input shaft (13) to the second countershaft (15), and an idle gear (41, 42) provided on the idle shaft (18) and connecting one gear of the first gear pair (21, 23) to one gear of the second gear pair (22, 28), when establishing an odd-numbered position among a plurality of forward side gear positions, the driving force of the engine (E) being transmitted to a driven wheel (W) via the first clutch (Co), the first input shaft (12), the first gear pair (21, 23), and the first countershaft (14), and when establishing a reverse gear position, the driving force of the engine (E) being transmitted to the driven wheel (W) via the second clutch (Ce), the second input shaft (13), one or both gears of the second gear pair (22, 28), the idle gear (41, 42), one or both gears of the first gear pair (21, 23), and the first countershaft (14).
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4. (canceled)
Specification