Abstract:
Incongruity sense of a driver due to dog clunking noise can be reduced with reduction of dog clunking noise. A fifth-speed driving gear (425) and a sixth-speed driving gear (426) are arranged on a driving shaft (41) along an axial direction. A first slider (451) is disposed to be movable in the axial direction between the fifth-speed driving gear (425) and the sixth-speed driving gear (426). The first slider (451) is not rotatable on the driving shaft (41). In the axial direction, the sum of the widths of the fifth-speed driving gear (425) and the sixth-speed driving gear (426) is smaller than the maximum width of the first slider (451).
Abstract:
A gearing arrangement for an electric motor which is improved in terms of ease of use and efficiency. To this end there is proposed a gearing arrangement for an electric motor of a vehicle, including an input interface for coupling to the electric motor and including an output interface, such that a drive torque path runs between the input interface and the output interface; including a first transmission gearing stage with a first transmission ratio (i1), such that the drive torque path in a first gearshift state runs via the first transmission gearing stage; and including a second transmission gearing stage with a second transmission ratio, such that the drive torque path in a second gearshift state runs via the second transmission gearing stage; and including an intermediate transmission gearing stage with a continuously variable transmission ratio (i1 . . . i2), such that the drive torque path in an intermediate gearshift state runs via the intermediate transmission gearing stage.
Abstract:
A shifting device for a transmission unit of a vehicle, in particular a vehicle that is driven by muscle force. The transmission unit has a first shaft, which is formed as a hollow shaft, on which a plurality of free gears is mounted. The free gears are in engagement with a corresponding plurality of gearwheels, which are mounted on a second shaft, wherein the free gears are connectable to the first shaft by selecting devices. The selecting devices can be actuated by a camshaft arranged coaxially in the first shaft, wherein the camshaft is connected to a driving device in order to be rotated relative to the first shaft to actuate the selecting device.
Abstract:
A marine transmission includes a synchronizer on a counter rotating shaft to shift into a high speed gear. The synchronizer includes friction surfaces on both sides of the gear body for the high speed gear. The high speed gear mesh is helical and generates axial force that enhances the torque carrying capacity of synchronizing friction surfaces, thereby enabling the shifting into the high speed gear without torque interrupt.
Abstract:
A synchronization device for a transmission includes a sliding sleeve, a blocking synchronizer ring and a change wheel. In a force flow region between the blocking synchronizer ring and the change wheel, ramps for producing a servo force axial with respect to the shaft are provided on at least one component part.
Abstract:
A shifting device of a motor vehicle transmission having a driveshaft (2) in the form of a hollow shaft with radial bores (5, 6, 7, 8). At least one drive output element (3) is arranged on the driveshaft (2), a shifting element (4) is arranged to move axially within the hollow shaft (2), and coupling elements, in the form of balls (9, 10, 11, 12), move radially within the radial bores (5, 6, 7, 8; 24). The drive output element (3) can be coupled to and decoupled from the driveshaft (2) by axial displacement of the shifting element (4) and radial displacement of the balls (9, 10, 11, 12). The shifting element is in the form of a shifting piston (4) and the hollow shaft (2) is in the form of a shifting cylinder (2aa).
Abstract:
A shifting device for a transmission unit, in particular for a vehicle which is operated by muscle force is disclosed. The shifting device has a first partial transmission and a second partial transmission, which are connected in series for power transmission. The first partial transmission has a shaft, which is formed as a hollow shaft and on which a plurality of loose wheels is mounted which form a corresponding plurality of gearwheels wheel pairs of the first partial transmission. The loose wheels can be connected to the shaft by means of selecting devices in order to form different gear stages of the first partial transmission, wherein the selecting devices can be actuated by a camshaft arranged in the shaft. The selecting devices of the first partial transmission are designed as selectable free-running clutches and the second partial transmission has a plurality of selectable gear stages. The camshaft is designed such that, during shifting from a highest stage of the gear stages of the first partial transmission to a lowest stage of the gear stages of the first partial transmission, the free-running clutches of the two gear stages are actuated simultaneously, and a load change between the corresponding free-running clutches allows a shifting operation of the second partial transmission to a higher stage of the gear stages.
Abstract:
A transmission includes an input shaft for receiving rotation of an engine, an intermediate shaft connected to the input shaft via a damping mechanism, drive gears, driven gears, and an output shaft. Rotation of the input shaft is transmitted to the driven gears, which are inserted into the output shaft to be free to rotate, via the damping mechanism, the intermediate shaft, and the drive gears. A gear shift is performed by fixing one of the driven gears to the output shaft to be incapable of relative rotation using a selector mechanism. An impact generated when the gear is fixed is absorbed and dampened by the damping mechanism, which is interposed between the input shaft and the intermediate shaft.
Abstract:
A gear with an annular member disposed alongside a side wall of an inward protrusion in a manner turnable relative to the side wall. The annular member is formed with abutment projections with inclined surfaces extending in circumferential directions and engaged by engaging pawls. The annular member is urged by return springs in such a manner that the portion of each abutment projection, at least other than the inclined surfaces, overlaps each engaging projection as viewed in axial direction. Each inclined surface of the abutment projection is made up of a bottom-side inclined surface having an inclination angle allowing abutment by the engaging pawls, and a top-side inclined surface having an inclination angle not allowing abutment by the engaging pawls but causing sliding movement of the engaging pawls. The engaging pawls are prevented be imposed with excessive local load when the engaging pawls engage the engaging projections of the gear.
Abstract:
A transmission includes an input shaft, an output shaft and an intermediate shaft, a power transmission mechanism and a control unit. The power transmission mechanism includes a forward travelling lower speed clutch, a forward travelling higher speed clutch, a rearward travelling clutch and a plurality of speed stage switching clutches. The control unit is configured to switch a gear state into a shiftable rearward travelling gear stage by turning off either the forward travelling lower speed clutch or the forward travelling higher speed clutch and by turning on the rearward travelling clutch in executing an operation of switching from forward travelling to rearward travelling, and to switch a gear stage into a shiftable forward travelling gear stage by turning off the rearward travelling clutch and turning on the forward travelling lower speed clutch in executing an operation of switching from rearward travelling to forward travelling.