Abstract: A shift operation device includes: a shift operation member including: a shaft portion; and an arm portion protruding in a radial direction with respect to a center axis of the shaft portion and being rotated around the center axis to perform shift operation of a gear; and a plurality of shift rail members, each of which includes: a rail portion; a shift fork portion; and a shift lug portion capable of being engaged with the arm portion. An engagement portion of the shift lug portion includes a pair of columnar projections arranged at positions mutually different in the shift direction and the select direction. When the shift lug portion is retained in a neutral position, pressure receiving surfaces of the columnar projections are approximately positioned on a reference orthogonal surface superimposed on the center axis and orthogonal to the rail portion.

Abstract: A dual clutch transmission includes: shift rail members having shift lug portions and performing, by actuating shift fork members, a shifting-in operation and a shifting-out operation; a shift select member having an arm portion and, after selecting the shift lug portion of the shift rail member corresponding to a target forward gear stage by moving the arm portion in a select direction, operating the shift rail member by moving the arm portion to perform the shifting-in operation or the shifting-out operation of the target forward gear stage. A movement direction of the arm portion for the shifting-in operation of a higher forward gear stage next higher than one of the forward gear stages except for the highest gear stage and the lowest gear stage is opposite to a movement direction of the arm portion for the shifting-in operation of a lower forward gear stage next lower than the one of the forward gear stages.

Abstract: A gear change control system of an automatic transmission, includes: a shift member, including a shaft portion having a selection axis oriented in a selecting direction, and a pair of arm portions formed on the shaft portion and projecting therefrom; shift rail members, having rail shaft portions, and having a shift axis oriented in a shifting direction; shift fork portions, formed on the rail shaft portions; shift lug members, formed on the rail shaft portions and including pillar-shaped portions. The arm portions swing about the selection axis to apply a pressure in the shifting direction from one side of the pillar-shaped portion by one of the arm portions to cause the shift fork portion to make a shifting operation, and to apply a pressure in the shifting direction from the other side of the pillar-shaped portion by the other arm portion to make a shift withdrawing operation.

Abstract: A shift operation device includes: a shift operation member including: a shaft portion; and an arm portion protruding in a radial direction with respect to a center axis of the shaft portion and being rotated around the center axis to perform shift operation of a gear; and a plurality of shift rail members, each of which includes: a rail portion; a shift fork portion; and a shift lug portion capable of being engaged with the arm portion. An engagement portion of the shift lug portion includes a pair of columnar projections arranged at positions mutually different in the shift direction and the select direction. When the shift lug portion is retained in a neutral position, pressure receiving surfaces of the columnar projections are approximately positioned on a reference orthogonal surface superimposed on the center axis and orthogonal to the rail portion.

Abstract: A gear change control system of an automatic transmission, include: a shift member, including a shaft portion which is disposed in such a manner that a selection axis thereof is oriented in a selecting direction and including an arm portion; shift fork portions, operable to make gear shifts of gears; shift rail members, connected to the sift fork portions and arranged in such a manner that shift axes thereof are oriented in a shifting direction; and shift lug members, projecting from the shift rail members and including pillar-shaped portions. The arm portion swings about the selection axis to apply a pressure in the shifting direction from one side of the pillar-shaped portion so as to cause the shift fork portion to perform a shift making operation, and to apply a pressure in the shifting direction from the other side of the pillar-shaped portion so as to cause the shift fork portion to perform a shift withdrawing operation.

Abstract: A vehicular transmission, includes: an input shaft; a drive gear, fixed to the input shaft; an output shaft; a driven gear, brought in mesh with the drive gear, and provided at the output shaft; a hub configured to rotate along with the output shaft; a sleeve configured to rotate integrally with the hub, and configured to slide in an axial direction so as to connect the driven gear to the output shaft to drive; a parking gear, integrally formed with the sleeve; a claw member, provided at a vicinity of an outer periphery of the parking gear engageably with and disengageably from the parking gear; and a sleeve restricting member, provided with the claw member, and configured to restrict the sleeve from a movement in the axial direction when the claw member is moved in a direction of being engaged with the parking gear.

Abstract: A transmission, includes: a shift member, adapted to be moved in a shifting direction and a selecting direction; a plurality of shift lugs, each of which has a pair of first claw portions spaced apart from each other in the shifting direction, and which are arranged in the selecting direction; and a plurality of shift forks, connected to the shift lugs via shift rails.

Abstract: A transmission, includes: a plurality of shift members, adapted to be moved in a shifting direction and a selecting direction; a shift lug, having a pair of claw portions spaced apart from each other in the shifting direction; and a shift fork, connected to the shift lug via a shift rail. The shift members are moved by an actuator so that one of the shift members pushes one of the claw portions in the shifting direction to thereby selectively move the shift lug in the shifting direction so as to cause the shift fork to perform a gear shift operation via the shift rail. The shift members are disposed as to be offset from each other in the shifting direction.

Abstract: A transmission includes: a shift member, adapted to be moved in a shifting direction and a selecting direction; a shift lug, having a pair of claw portions spaced apart from each other in the shifting direction; and a shift fork, connected to the shift lug via a shift rail. The shift member is moved by an actuator to push one of the claw portions in the shifting direction to thereby selectively move the shift lug in the shifting direction so as to cause the shift fork to perform a gear shift operation via the shift rail. The pair of claw portions are disposed so as to be offset from each other in the selecting direction.

Abstract: A gear change control system of an automatic transmission, includes: a shift member, including a shaft portion disposed in such a manner that a selection axis is oriented in a selecting direction, and including a pair of arm portions formed on the shaft portion in such a manner as to project therefrom; shift rail members, having rail shaft portions, and arranged in such a manner that shift axes are oriented in a shifting direction; shift fork portions, formed on the rail shaft portions; shift lug members, formed on the rail shaft portions and including pillar-shaped portions.

Abstract: A gear change control system of an automatic transmission, include: a shift member, including a shaft portion which is s disposed in such a manner that a selection axis thereof is oriented in a selecting direction and including an arm portion; shift fork portions, operable to make gear shifts of gears; shift rail members, connected to the sift fork portions and arranged in such a manner that shift axes thereof are oriented in a shifting direction; and shift lug members, projecting from the shift rail members and including pillar-shaped portions. The arm portion swings about the selection axis to apply a pressure in the shifting direction from one side of the pillar-shaped portion so as to cause the shift fork portion to perform a shift making operation, and to apply a pressure in the shifting direction from the other side of the pillar-shaped portion so as to cause the shift fork portion to perform a shift withdrawing operation.

Abstract: A vehicular transmission, includes: an input shaft; a drive gear, fixed to the input shaft; an output shaft; a driven gear, brought in mesh with the drive gear, and provided at the output shaft; a hub configured to rotate along with the output shaft; a sleeve configured to rotate integrally with the hub, and configured to slide in an axial direction so as to connect the driven gear to the output shaft to drive; a parking gear, integrally formed with the sleeve; a claw member, provided at a vicinity of an outer periphery of the parking gear engageably with and disengageably from the parking gear; and a sleeve restricting member, provided with the claw member, and configured to restrict the sleeve from a movement in the axial direction when the claw member is moved in a direction of being engaged with the parking gear.

Abstract: A transmission, includes: a shift member, adapted to be moved in a shifting direction and a selecting direction; a plurality of shift lugs, each of which has a pair of first claw portions spaced apart from each other in the shifting direction, and which are arranged in the selecting direction; and a plurality of shift forks, connected to the shift lugs via shift rails.

Abstract: A transmission, includes: a plurality of shift members, adapted to be moved in a shifting direction and a selecting direction; a shift lug, having a pair of claw portions spaced apart from each other in the shifting direction; and a shift fork, connected to the shift lug via a shift rail. The shift members are moved by an actuator so that one of the shift members pushes one of the claw portions in the shifting direction to thereby selectively move the shift lug in the shifting direction so as to cause the shift fork to perform a gear shift operation via the shift rail. The shift members are disposed as to be offset from each other in the shifting direction.

Abstract: A transmission includes: a shift member, adapted to be moved in a shifting direction and a selecting direction; a shift lug, having a pair of claw portions spaced apart from each other in the shifting direction; and a shift fork, connected to the shift lug via a shift rail. The shift member is moved by an actuator to push one of the claw portions in the shifting direction to thereby selectively move the shift lug in the shifting direction so as to cause the shift fork to perform a gear shift operation via the shift rail. The pair of claw portions are disposed so as to be offset from each other in the selecting direction.

Abstract: A small swivel type working vehicle includes a running device (4), a swivel base (2) mounted on the running device (4) to be swivelable about a vertical swivel axis (X), a driver's seat (5) mounted on the swivel base (2), a control box (6) mounted upright on a top surface of the swivel base (2) forwardly of the driver's seat (5), a swing bracket (18) supported to be swingable about a vertical pivotal axis (19a) by a flange unit (17) provided at a front end of the swivel base (2), a boom (20) attached to the swing bracket to be swingable about a horizontal shaft (22), and a boom cylinder (21) connected at one end thereof to the swing bracket (18) and at the other end to the boom (20) for swinging the boom (20). The boom cylinder (21) is disposed outside the boom (20) to extend along a rear surface thereof. A walk-through space (100) is defined between the control box (6) and the driver's seat (5).

Abstract: A small swivel type working vehicle includes a running device (4), a swivel base (2) mounted on the running device (4) to be swivelable about a vertical swivel axis (X), a driver's seat (5) mounted on the swivel base (2), a control box (6) mounted upright on a top surface of the swivel base (2) forwardly of the driver's seat (5), a swing bracket (18) supported to be swingable about a vertical pivotal axis (19a) by a flange unit (17) provided at a front end of the swivel base (2), a boom (20) attached to the swing bracket to be swingable about a horizontal shaft (22), and a boom cylinder (21) connected at one end thereof to the swing bracket (18) and at the other end to the boom (20) for swinging the boom (20). The boom cylinder (21) is disposed outside the boom (20) to extend along a rear surface thereof. A walk-through space (100) is defined between the control box (6) and the driver's seat (5).