Actuating mechanism for the automatic operation of a gear-shift in a transmission

An actuating device for the automatic operation of a gear change in a standard transmission having a plurality gears corresponding to a plurality of translation ratios, comprising:

• a rotatably and axially movable selector shaft operatively connectable to said transmission for selecting one of the plural gears;
• a first drive operatively connected to said selector shaft via a guide mechanism, said guide mechanism comprising at least one constraint guide corresponding to a shifting path of said selector shaft for effecting a gear change between two of said plural gears;
• and
• a second drive operatively connected to said selector shaft for providing an operating force having a first force component along an axial direction of said selector shaft and a second force component along a circumferential direction of said selector shaft for urging said selector shaft along a movement path determined by an operating position of said guide mechanism,
• said guide mechanism further comprising an input part connected to said first drive and an output part in active connection with said input part, wherein said first drive is operatively connected to said input part of said guide, mechanism via an intermediate connection of a transmitting device, wherein said transmitting device comprises a self-locking mechanism.

An actuating device for the automatic operation of a gear change in a standard transmission having a plurality gears corresponding to a plurality of translation ratios, comprising:

• a rotatably and axially movable selector shaft operatively connectable to said transmission for selecting one of the plural gears;
• a first drive operatively connected to said selector shaft via a guide mechanism, said guide mechanism comprising at least one constraint guide corresponding to a shifting path of said selector shaft for effecting a gear change between two of said plural gears;
• and
• a second drive operatively connected to said selector shaft for providing an operating force having a first force component along an axial direction of said selector shaft and a second force component along a circumferential direction of said selector shaft for urging said selector shaft along a movement path determined by an operating position of said guide mechanism,
• wherein said guide mechanism comprises an input part connected to said first drive and an output part in active connection with said input part, said guide mechanism further comprising a slot and a projection engaged in said slot, said projection engaging said slot comprises a bolt formed as an integral unit with said selector shaft, and said slot comprises a part of said input part of said guide mechanism.

An actuating device for the automatic operation of a gear change in a standard transmission having a plurality gears corresponding to a plurality of translation ratios, comprising:

• a rotatably and axially movable selector shaft operatively connectable to said transmission for selecting one of the plural gears;
• a first drive operatively connected to said selector shaft via a guide mechanism, said guide mechanism comprising at least one constraint guide corresponding to a shifting path of said selector shaft for effecting a gear change between two of said plural gears;
• and
• a second drive operatively connected to said selector shaft for providing an operating force having a first force component along an axial direction of said selector shaft and a second force component along a circumferential direction of said selector shaft for urging said selector shaft along a movement path determined by an operating position of said guide mechanism, wherein at least one of said first drive and said second drive comprises an actuating mechanism drive for producing an operating force applicable to the part to be operated, a supporting spring unit operatively connected for producing a supporting force that supplements said operating force for the part to be operated, and a prestress arrangement operatively connected to said supporting spring for changing a prestress state of said supporting spring unit before production of an operating force of the part to be operated via said actuating mechanism drive.