A multi-directional compliant shifting mechanism for a multi-speed power tool may couple a movable selector to a power transmission system of the tool, for selecting an operational speed of the multi-speed power tool. The complaint shifting mechanism may provide shifting compliance in a first direction in response to movement of the selector in a first direction, and may provide shifting compliance in a second direction in response to movement of the selector in a second direction. In one example, this multi-directional shifting compliance may be provided by interaction of the selector with a camming surface, in combination with a single compression spring. In another example, this multi-directional shifting compliance may be provided by first and second springs, selectively acting to provide compliance in the first and second directions.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

A fork guide groove of a drum member guides a shift fork so that a shifter member is in a reference position not engaged with first and second speed change members when the drum member is placed in a neutral position, is movable between a first speed-change position engaged with the first speed-change member and the reference position when the drum member is placed in a first operational position, and is movable between a second speed-change position engaged with the second speed-change member and the reference position when the drum member is placed in a second operational position. A slider guide groove of the drum member guides a slider member supported by a fork shaft in an axially movable manner so as not to obstruct movement of the shifter member between the reference position and the first speed-change position when the drum member is placed in the first operational position.

A compliant shifting mechanism for a power tool includes a selector, a first shift plate rotatable in response to rotation of the selector, a second shift plate rotatable in response to rotation of the first shift plate, a shift member moveable in response to rotation of the second shift plate to shift between a first mode of operation and a second mode of operation, a first torsion spring coupled to the first shift plate, and a second torsion spring coupled to the second shift plate. In response to rotation of the selector in a first direction, the first torsion spring may bias the first shift plate in the first direction for shifting compliance in the first direction. In response to rotation of the selector in an opposite second direction, the second torsion spring may bias the second shift plate in the second direction for shifting compliance in the second direction.

A device (5) for selective displacement of a shift element (4) towards a first shift position and/or a second shift position includes an actuator (6) and a spring module (7). The spring module (7) includes an actuator-side force-introduction element, a shift element-side force-introduction element, and a spring arrangement. The spring arrangement includes a first spring end and a second spring end. The actuator-side force-introduction element and the shift element-side force-introduction element each include a first support section and a second support section for supporting the spring ends. The first spring end is associated with the first support section of the shift element-side force-introduction element and with the second support section of the actuator-side force-introduction element. The second spring end is associated with the first support section of the actuator-side force-introduction element and with the second support section of the shift element-side force-introduction element.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

A vehicle and a vehicle gear shift system includes a movable shift element configured to shift gears in a multispeed gear system of the vehicle; an energy source; and an energy storage element, wherein the energy source is configured to load or charge the energy storage element with potential energy, and the energy storage element is configured to move the shift element.

A transmission system efficiently performs efficiently and also provides the ability to perform full-power shifts. For example, a secondary clutch actuator, independent of fluid actuation, may eliminate the need for a pump to continuously provide high pressure during regular vehicle operation such that high pressures are only required during a shift event. This eliminates the need for energy at the pump to maintain application of the clutch, thereby allowing such energy to be used of other systems in the EV or to facilitate increased vehicle range.

A shift mechanism having a biasing member that operatively connects a detent linkage to a linkage. The biasing member permits an actuator shaft of an actuator and the detent linkage to rotate about an actuator axis with respect to the linkage when a shift collar is inhibited from moving along the axis.