Shift device

A shifting system comprising:

• an actuator,
• a shift member for shifting a shift sleeve configured to engage and disengage gears of a transmission, and
• a shift device that comprises:
• a first member axially movably supported on a shaft, the first member comprising a coupling portion for coupling with a coupling mechanism which is in communication with the actuator of the shifting system,
• a second member axially movably supported on the shaft, and
• an elastic member arranged on the shaft and elastically compressible in an axial direction of the shaft;
• wherein the actuator is in communication with the first member the shift device, and
• the shift member is in communication with the second member of the shift device,
• when the actuator is operated, the first member is moved in the axial direction by a specific amount,
• when axial movement of the shift member is not restricted, the axial movement of the first member is transmitted to the second member so that the second member is moved in the axial direction by the specific amount,
• when axial movement of the shift member is restricted, the first member is displaced from an initial position relative to the second member, thereby compressing the elastic member, and
• when restriction on the axial movement of the shift member is released, the elastic member urges the first member to the initial position relative to the one of the first member and the second member, thereby axially moving the shift member by the specific amount so as to perform a shifting operation;
• wherein the shift device further comprises two inner sleeves axially movably supported on the shaft,
• the first member comprises an outer sleeve disposed radially outwardly of the inner sleeves,
• the outer sleeve is axially movably supported on the shaft via the inner sleeves,
• the inner sleeves are axially movable with respect to the outer sleeve, and
• the elastic member is arranged axially between the two inner sleeves.

A shift device, comprising:

• a first member axially movably supported on a shaft, the first member comprising a coupling portion for coupling with a coupling mechanism which is in communication with an actuator of a shifting system;
• a second member axially movably supported on the shaft, and
• an elastic member arranged on the shaft and elastically compressible in an axial direction of the shaft, wherein
• the second member is engaged with the first member such that an axial movement of the first member is transmitted to the second member and vice versa via the elastic member,
• the elastic member, by being compressed, allows relative axial movement in both a first axial direction and an opposite second axial direction between the first member and the second member so that one of the first member and the second member is displaced from an initial position relative to the other of the first member and the second member, and
• the elastic member, in a compressed state, exerts an urging force on the first member and the second member urging the one of the first member and the second member towards the initial position relative to the other of the first member and the second member,
• wherein the shift device further comprises two inner sleeves axially movably supported on the shaft,
• the first member comprises an outer sleeve disposed radially outwardly of the inner sleeves,
• the outer sleeve is axially movably supported on the shaft via the inner sleeves,
• the inner sleeves are axially movable with respect to the outer sleeve, and
• the elastic member is arranged axially between the two inner sleeves
• wherein one of the two inner sleeves is arranged at one axial end of the outer sleeve at least partially inside the outer sleeve,
• the other of the two inner sleeves is arranged at an other axial end of the outer sleeve at least partially inside the outer sleeve,
• the inner sleeves each have an axial end, which is arranged inside the outer sleeve, and an outer abutment projects radially outwardly at the axial end from an outer peripheral surface of the inner sleeve and extends in a circumferential direction of the inner sleeve, and
• the outer sleeve has at each of the axial ends an inner abutment projecting radially inwardly from an inner peripheral surface of the outer sleeve and extending in a circumferential direction of the outer sleeve, and
• the outer abutment of each inner sleeve engages a respective inner abutment of the outer sleeve such that an axial movement of the inner sleeves relative to the outer sleeve is restricted,
• wherein at least one inner sleeve includes an axial protrusion formed on an outer circumferential edge portion of the outer abutment on an axial end side of the inner sleeve, and
• the axial protrusion partially covers an outer peripheral surface of an axial end portion of the elastic member.