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US 2014/0076080 A1Published application
Transmission
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorYasuyuki Ukon
Life of this patent
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Abstract
In a transmission, an input shaft connected to a startup clutch includes a first input shaft and a second input shaft. Drive gears are fixed to a first main shaft and a second main shaft, and driven gears are provided on an output shaft to be free to rotate relative thereto. The driven gears are connected to and disconnected from the output shaft by a gear switching mechanism. A shaft switching mechanism that switches a power transmission path between the first main shaft and the second main shaft is provided on the first main shaft, the second main shaft, and the second input shaft. A damping mechanism is provided between the first input shaft and the second input shaft in order to cut spike torque generated when the power transmission path is switched, to a set torque.
Claims14
A transmission comprising:
- an input shaft that is rotated by a driving force of an engine;
- a first main shaft and a second main shaft disposed to be free to rotate relative to the input shaft;
- pluralities of drive gears fixed respectively to the first main shaft and the second main shaft;
- an output shaft disposed parallel to the input shaft, the first main shaft, and the second main shaft,
- driven gears disposed on the output shaft to be free to rotate relative thereto, the driven gears being configured to mesh respectively with the pluralities of drive gears;
- a gear switching mechanism to switch selectively between a connected condition in which a driven gear is connected to the output shaft such that the driven gear rotates integrally with the output shaft, and a disconnected condition in which the output shaft and the driven gears are capable of rotating relatively;
- and
- a shaft switching mechanism to switch a transmission path of a rotary power of the input shaft selectively between the first main shaft and the second main shaft,
- wherein the shaft switching mechanism includes:
- an engagement member provided either on each of the first main shaft and the second main shaft or on the input shaft to be capable of moving in an axial direction of the input shaft;
- and
- a dog provided on the other of each of the first and second main shafts and the input shaft so as to engage with the engagement member when the engagement member moves, thereby causing either one of the first main shaft and the second main shaft to rotate integrally with the input shaft, and
- the input shaft is provided with a damping mechanism that generates a sliding motion when torque variation occurs as a result of the engagement between the engagement member and the dog, thereby cutting the torque variation to a preset set torque.
10 more elements
A transmission comprising:
- an input shaft that is rotated by a driving force of an engine;
- a first main shaft and a second main shaft disposed to be free to rotate relative to the input shaft;
- pluralities of drive gears provided respectively on the first main shaft and the second main shaft to be free to rotate relative thereto;
- a gear switching mechanism to switch selectively between a connected condition in which a drive gear is connected to either one of the first main shaft and the second main shaft such that the drive gear rotates integrally with either one of the first main shaft and the second main shaft, and a disconnected condition in which the drive gears and either one of the first main shaft and the second main shaft are capable of rotating relatively;
- an output shaft disposed parallel to the input shaft, the first main shaft, and the second main shaft;
- driven gears fixed to the output shaft, the driven gears being configured to mesh respectively with the pluralities of drive gears being;
- and
- a shaft switching mechanism to switch a transmission path of a rotary power of the input shaft selectively between the first main shaft and the second main shaft,
- wherein the shaft switching mechanism includes:
- an engagement member provided either on each of the first main shaft and the second main shaft or on the input shaft to be capable of moving in an axial direction of the input shaft;
- and
- a dog provided on the other of each of the first and second main shafts and the input shaft so as to engage with the engagement member when the engagement member moves, thereby causing either one of the first main shaft and the second main shaft to rotate integrally with the input shaft, and
- the input shaft is provided with a damping mechanism that generates a sliding motion when torque variation occurs as a result of the engagement between the engagement member and the dog, thereby cutting the torque variation to a preset set torque.
10 more elements
Dependencies are inferred from the claim text.