Abstract: The power transmission device comprises a first shaft and second shaft to which the power of two motors is respectively inputted, an output shaft disposed on a different axis than the first shaft, a first reduction mechanism that transmits the rotation of the first shaft to the output shaft through a plurality of paths, and a second reduction mechanism that transmits the rotation of the second shaft to the output shaft through one path. In the first reduction mechanism, the plurality of paths have different gear ratios, and the gear ratio of the second reduction mechanism is the smallest or largest among all the gear ratios of the reduction mechanisms.

Abstract: A control device for a vehicle is provided with: two drive devices; a first speed reducer that transmits the torque of one drive device to an output shaft; and a second speed reducer that transmits the torque of the other drive device to the output shaft. The control device is provided with a torque control unit that controls, according to a target torque, the torque output by the two drive devices. The torque control unit includes a restriction unit that controls the torque output by the two drive devices when the sign of the target torque is changed from a first sign to a second sign. While outputting torque that reduces the backlash of the first speed reducer or the second speed reducer to one of the drive devices, the restriction unit outputs torque according to the target torque to the other drive device.

Abstract: A sleeve in the shift control device includes a sleeve main body and a first convex section. The first convex section is annular in shape and protruded radially outward from the outer circumferential surface of the sleeve main body. The shift fork includes a fork main body, a second convex section, a ring, and a joining member. The fork main body is annular in shape and disposed radially outside the sleeve main body. The second convex section is annular in shape, axially disposed side by side with the first convex section, and protruded radially inward from the inner circumferential surface of the fork main body. The first convex section is axially sandwiched between the ring and the second convex section. The joining member is disposed in a space that is formed by a first groove formed in the ring and a second groove formed in the fork main body.

Abstract: Provided is a clutch that is able to not only transmit torque smoothly even when an input shaft and an output shaft significantly differ in relative speed and phase, but also reduce an energy loss during torque transmission. The clutch (10) includes a dog clutch (40) for transmitting forward or reverse torque from the input shaft (11) to the output shaft (12), and a friction clutch (20) for transmitting torque from the input shaft (11) to the output shaft (12) and disposed in parallel with the dog clutch (40), and selectively transmits or interrupts torque between the input shaft (11) and the output shaft (12).

Abstract: The transmission includes a first shaft, a second shaft, a third shaft, and a fourth shaft. These shafts are parallel to each other. A first gear couples to the first shaft. A second gear couples to or idles around the first shaft when a first clutch is switched. A third gear meshes with the first gear and couples to the second shaft. A fourth gear couples to or idles around the second shaft when a second clutch is switched. A sixth gear meshes with the first gear and couples to the third shaft. A seventh gear couples to or idles around the third shaft when a fourth clutch is switched. A ninth gear meshes with the second gear, the fourth gear, and the seventh gear, and couples to the fourth shaft.

Abstract: A transmission device includes: a shaft member, in the outer circumferential surface of which is formed a male thread centered about a second axis perpendicular to a first axis of a friction clutch; a screw member has a female thread that meshes with the male thread; an arm reciprocates together with the screw member; a first cam member couples to the arm to regulate the rotation of the screw member and rotates around the first axis; a second cam member has a cam surface that is oriented in the direction of the first axis to oppose a cam surface of the first cam member; and a rolling member is disposed between the two cam surfaces to roll on the two cam surfaces; the first cam member or the second cam member subjects the friction clutch to a force oriented in the direction of the first axis.

Abstract: A sleeve in the shift control device includes a sleeve main body and a first convex section. The first convex section is annular in shape and protruded radially outward from the outer circumferential surface of the sleeve main body. The shift fork includes a fork main body, a second convex section, a ring, and a joining member. The fork main body is annular in shape and disposed radially outside the sleeve main body. The second convex section is annular in shape, axially disposed side by side with the first convex section, and protruded radially inward from the inner circumferential surface of the fork main body. The first convex section is axially sandwiched between the ring and the second convex section. The joining member is disposed in a space that is formed by a first groove formed in the ring and a second groove formed in the fork main body.

Abstract: A transmission device includes: a shaft member, in the outer circumferential surface of which is formed a male thread centered about a second axis perpendicular to a first axis of a friction clutch; a screw member has a female thread that meshes with the male thread; an arm reciprocates together with the screw member; a first cam member couples to the arm to regulate the rotation of the screw member and rotates around the first axis: a second cam member has a cam surface that is oriented in the direction of the first axis to oppose a cam surface of the first cam member; and a rolling member is disposed between the two cam surfaces to roll on the two cam surfaces; the first cam member or the second cam member subjects the friction clutch to a force oriented in the direction of the first axis.

Abstract: A transmission mechanism includes a first gear coaxially fixed to a rotational shaft having a hollow shape, a second gear, and a third gear. The second and third gears are rotatably and coaxially disposed on an outer periphery of the rotational shaft such that the second and third gears are opposed to each other. A gear select clutch is disposed between the second and third gears, and configured to select one of a state in which the second and first gears are coupled and the third and first gears are decoupled, and a state in which the third and first gears are coupled and the second and first gears are decoupled. A clutch operation unit is configured to couple an operation shaft disposed in a hollow part of the rotational shaft to operate the gear select clutch by advancing and retreating the operation shaft in an axial direction.

Abstract: The transmission includes a first shaft, a second shaft, a third shaft, and a fourth shaft. These shafts are parallel to each other. A first gear couples to the first shaft. A second gear couples to or idles around the first shaft when a first clutch is switched. A third gear meshes with the first gear and couples to the second shaft. A fourth gear couples to or idles around the second shaft when a second clutch is switched. A sixth gear meshes with the first gear and couples to the third shaft. A seventh gear couples to or idles around the third shaft when a fourth clutch is switched. A ninth gear meshes with the second gear, the fourth gear, and the seventh gear, and couples to the fourth shaft.

Abstract: To provide a transfer (10) capable of reducing its length in the axial direction. The transfer (10) comprises: a first device (51) separably couples a first gear (21) to an input shaft (11) or a first output shaft (12) and a second device (52) separably couples a second gear (22) to the input shaft (11) or the first output shaft (12). The first gear (21) and the second gear (22) are disposed axially between the first device (51) and the second device (52).

Abstract: Provided is a transmission which eliminates torque loss during gear shift and with which the processing of components can be simplified. An axial force is generated in a protrusion by means of a first portion during gear shift from a low gear to a high gear, and when a low-speed transmission gear and a clutch ring separate from each other, a high speed transmission gear and the clutch ring interlock. Since relative movement of the protrusion in a neutral direction is suppressed by means of a first retaining portion during coasting, gear disengagement whereby the transmission gears and the clutch ring separate from each other can be suppressed. Since the first retaining portion can be formed in a first wall when providing a groove portion, an increase in the component processing workload can be suppressed.

Abstract: Provided is a power transmission device that can increase a torque that a second motor outputs to an output shaft. The power transmission device includes: a first input shaft and a second input shaft coupled to a first motor and a second motor, respectively, and disposed on the same axis; a first speed reduction mechanism transmitting a rotation of the first input shaft to an output shaft via an intermediate shaft; a second speed reduction mechanism transmitting a rotation of the second input shaft to the output shaft via the intermediate shaft at a speed reduction ratio different from the speed reduction ratio of the first speed reduction mechanism; and a first clutch disconnecting or connecting the power of the first speed reduction mechanism.

Abstract: Provided is a clutch that is able to not only transmit torque smoothly even when an input shaft and an output shaft significantly differ in relative speed and phase, but also reduce an energy loss during torque transmission. The clutch (10) includes a dog clutch (40) for transmitting forward or reverse torque from the input shaft (11) to the output shaft (12), and a friction clutch (20) for transmitting torque from the input shaft (11) to the output shaft (12) and disposed in parallel with the dog clutch (40), and selectively transmits or interrupts torque between the input shaft (11) and the output shaft (12).

Abstract: Provided is a transmission which eliminates torque loss during gear shift and with which the processing of components can be simplified. An axial force is generated in a protrusion by means of a first portion during gear shift from a low gear to a high gear, and when a low-speed transmission gear and a clutch ring separate from each other, a high speed transmission gear and the clutch ring interlock. Since relative movement of the protrusion in a neutral direction is suppressed by means of a first retaining portion during coasting, gear disengagement whereby the transmission gears and the clutch ring separate from each other can be suppressed. Since the first retaining portion can be formed in a first wall when providing a groove portion, an increase in the component processing workload can be suppressed.

Abstract: To provide a transfer (10) capable of reducing its length in the axial direction. The transfer (10) comprises: a first device (51) separably couples a first gear (21) to an input shaft (11) or a first output shaft (12) and a second device (52) separably couples a second gear (22) to the input shaft (11) or the first output shaft (12). The first gear (21) and the second gear (22) are disposed axially between the first device (51) and the second device (52).

Abstract: Provided is a power transmission device that can increase a torque that a second motor outputs to an output shaft. The power transmission device includes: a first input shaft and a second input shaft coupled to a first motor and a second motor, respectively, and disposed on the same axis; a first speed reduction mechanism transmitting a rotation of the first input shaft to an output shaft via an intermediate shaft; a second speed reduction mechanism transmitting a rotation of the second input shaft to the output shaft via the intermediate shaft at a speed reduction ratio different from the speed reduction ratio of the first speed reduction mechanism; and a first clutch disconnecting or connecting the power of the first speed reduction mechanism.

Abstract: Provided is a clutch device capable of reliably transmitting predetermined torque. Power is transmitted from an outer ring to a second gear through a first gear. The teeth of the first gear are formed so that the lines of the teeth are non-parallel to the center axis. The direction of axial force generated by the reaction force of the second gear and acting on the first gear is set to be the same as the direction of movement of the outer ring. When rollers engage with raceway surfaces and power is transmitted from the first gear to the second gear, the reaction force of the second gear promotes the movement of the outer ring in the axial direction. Predetermined torque can be reliably transmitted because axial pull-in force between an inner ring and the outer ring increases.

Abstract: The invention provides a power transmission device in which the switching mechanism and control operation can be simplified. Different directions are established for the relative rotation in which the first sprag engages the inner race and the outer race, and the relative rotation in which the second sprag engages the inner and outer races, whereby the inner retainer and the outer retainer are caused to move relative to each other about an axial center O by a load imparting device, and either the first sprag or the second sprag can be made to engage the inner race and the outer race. The combined retention of the first sprag and the second sprag by the inner retainer and the outer retainer actuates the load imparting device to allow the power transmission direction to be switched all at once, resulting in a simpler switching mechanism and control operation.

Abstract: Provided is a clutch device capable of reliably transmitting predetermined torque. Power is transmitted from an outer ring to a second gear through a first gear. The teeth of the first gear are formed so that the lines of the teeth are non-parallel to the center axis. The direction of axial force generated by the reaction force of the second gear and acting on the first gear is set to be the same as the direction of movement of the outer ring. When rollers engage with raceway surfaces and power is transmitted from the first gear to the second gear, the reaction force of the second gear promotes the movement of the outer ring in the axial direction. Predetermined torque can be reliably transmitted because axial pull-in force between an inner ring and the outer ring increases.