A vehicle transfer includes an input shaft, an output shaft, an output member, a clutch, a motor, a screw mechanism, a transmitting mechanism, a fork shaft, an amplifying link mechanism, a high-low switching mechanism, and a fork. The fork shaft is configured to move in an axial direction of the fork shaft. The amplifying link mechanism is connected to the nut member and the fork shaft. The amplifying link mechanism is configured to amplify an amount of movement of the nut member in the direction of the common axis and transmit the amplified amount of movement to the fork shaft. The fork is connected to the fork shaft. The fork is configured to transmit moving force of the fork shaft to the high-low switching mechanism such that the high-low switching mechanism switches between the high-speed gear and the low-speed gear.

A vehicle transfer includes an input shaft, an output shaft, an output member, a clutch, a motor, a screw mechanism, a transmitting mechanism, a fork shaft, an amplifying link mechanism, a high-low switching mechanism, and a fork. The fork shaft is configured to move in an axial direction of the fork shaft. The amplifying link mechanism is connected to the nut member and the fork shaft. The amplifying link mechanism is configured to amplify an amount of movement of the nut member in the direction of the common axis and transmit the amplified amount of movement to the fork shaft. The fork is connected to the fork shaft. The fork is configured to transmit moving force of the fork shaft to the high-low switching mechanism such that the high-low switching mechanism switches between the high-speed gear and the low-speed gear.

A device and method for preventing inadvertent selection of a parking lock function in a 2-ratio transmission. Here, the shift positions of the transmission and the parking lock function thereof can be selected by way of a shift drum. A mechanically acting apparatus is provided which, in the event of rotation of the shift drum in a first direction of rotation, blocks the selection of a parking lock position of the shift drum, subsequently, in the event of rotation of the shift drum in a second direction of rotation opposite to the first direction of rotation, releases the blocking, and subsequently, in the first direction of rotation opposite to the second direction of rotation, permits selection of the parking lock position. The device does not require a separate parking lock wheel.

A device and method for preventing inadvertent selection of a parking lock function in a 2-ratio transmission. Here, the shift positions of the transmission and the parking lock function thereof can be selected by way of a shift drum. A mechanically acting apparatus is provided which, in the event of rotation of the shift drum in a first direction of rotation, blocks the selection of a parking lock position of the shift drum, subsequently, in the event of rotation of the shift drum in a second direction of rotation opposite to the first direction of rotation, releases the blocking, and subsequently, in the first direction of rotation opposite to the second direction of rotation, permits selection of the parking lock position. The device does not require a separate parking lock wheel.

The invention relates to a device for actuating a clutch-controlled transfer case having a two-stage intermediate gearing and a clutch-controlled transfer case that has a two-stage intermediate gearing and that is equipped with such a device. The device comprises: a rotatably driven selector shaft, a drive for rotating the selector shaft, a clutch cam disk, which can be rotated about a clutch cam disk axis by means of the selector shaft, and at least one scissor lever,
wherein: one end (06) of at least one scissor lever is guided in a gate provided on the clutch cam disk, the gate has a curved path for each scissor lever, in which curved path the end of the scissor lever associated with the curved path is guided, the curved path winds around the clutch cam disk axis by at least 360, the curved path has at least one helical segment having a continuously increasing or decreasing distance from the clutch cam disk axis, along which segment one end of a scissor lever guided therein experiences a continuously increasing or decreasing change in deflection with respect to the clutch cam disk axis during a rotation of the clutch cam disk with increasing angle of rotation, and the clutch cam disk is disposed in such a way that the clutch cam disk can be rotated with respect to the selector shaft between two stops by an angle-of-rotation range such that, by means of rotation of the selector shaft within the angle-of-rotation range situated between said stops, shifting back and forth between the shifting stages of the intermediate gearing occurs, and, by means of rotation of the selector shaft beyond the angle-of-rotation range, the end of the at least one scissor lever experiences a deflection for actuating the clutch while a selected shifting stage is maintained.

A power transfer case transfers drive torque from the input member to the output member. The power transfer case includes a lubrication system, a hydraulically actuated friction clutch assembly, and a hydraulically actuated range shift assembly. An on-demand electric lube pump can supply a fluid under pressure. An accumulator is selectively supplied with fluid under pressure from the on-demand lube pump. A first valve selectively directs fluid under pressure from the on-demand lube pump to the lubrication system when in the first position and to the accumulator when in a second position. A second valve selectively directs fluid under pressure from the accumulator to the range shift assembly when in a first position, to the friction clutch assembly when in a second position, and isolates the accumulator from the range shift assembly and the friction clutch assembly when in a third position.

An improved gear shift mechanism for an auger gear drive which uses a hydraulic cylinder or other linear force means to push on one end of a rocker arm. This moves the rocker arm and the gear train between a first gear set and a second gear set. A biasing means is applied directly to the rocker arm by a spring or other device. The design eliminates adjustable linkages and the need adjustments in the field and allows for use of a simpler hydraulic cylinder than found in the prior art.

An improved gear shift mechanism for an auger gear drive which uses a hydraulic cylinder or other linear force means to push on one end of a rocker arm. This moves the rocker arm and the gear train between a first gear set and a second gear set. A biasing means is applied directly to the rocker arm by a spring or other device. The design eliminates adjustable linkages and the need adjustments in the field and allows for use of a simpler hydraulic cylinder than found in the prior art.

A disconnection mechanism, for engaging or disengaging a fixed component and a movable component arranged on a first shaft extending in a first direction. The disconnection mechanism includes a shift fork, connected to the movable component, and constructed to be able to reciprocate linearly in the first direction, so that the movable component is engaged with or disengaged from the fixed component. An actuator includes an output end which rotates about a rotation axis of the actuator at a distance from the rotation axis. A drive rod has a first end rotatably connected to the output end and a second end rotatably connected to the shift fork, so that the output end, when rotating, is able to drive the shift fork to reciprocate linearly.

A disconnection mechanism, for engaging or disengaging a fixed component and a movable component arranged on a first shaft extending in a first direction. The disconnection mechanism includes a shift fork, connected to the movable component, and constructed to be able to reciprocate linearly in the first direction, so that the movable component is engaged with or disengaged from the fixed component. An actuator includes an output end which rotates about a rotation axis of the actuator at a distance from the rotation axis. A drive rod has a first end rotatably connected to the output end and a second end rotatably connected to the shift fork, so that the output end, when rotating, is able to drive the shift fork to reciprocate linearly.