A gear shifting device, by which an axial shift movement of a shift element into a shift position is triggered through interaction of a shift pin with an associated groove-like shift gate that changes in an axial direction. The shift element features the associated shift gate, while the respective shift pin is arranged in a radially displaceable manner on a transmission component adjacent to the shift element.

Synchronizer ring made of deep-drawable sheet metal. The ring includes a ring-shaped sheet metal body having a conical section arranged between a wall and a hub surface. One or more radially outwardly projecting guide elements are defined by radially outwardly projecting tapered indentations integrally formed with the ring-shaped sheet metal body. The wall is located at a largest conical diameter side of the ring-shaped sheet metal body and extends substantially perpendicular to a ring body axis. Gear teeth are arranged on a radially outer end of the wall. The one or more guide elements are configured to provide centering guidance relative to a hollow cylindrical surface of a synchronizer ring hub.

Synchronizer ring made of deep-drawable sheet metal. The ring includes a ring-shaped sheet metal body having a conical section arranged between a wall and a hub surface. One or more radially outwardly projecting guide elements are defined by radially outwardly projecting tapered indentations integrally formed with the ring-shaped sheet metal body. The wall is located at a largest conical diameter side of the ring-shaped sheet metal body and extends substantially perpendicular to a ring body axis. Gear teeth are arranged on a radially outer end of the wall. The one or more guide elements are configured to provide centering guidance relative to a hollow cylindrical surface of a synchronizer ring hub.

An automatic transmission of the present invention is provided with: a plurality of rotating shafts; a plurality of gears; a plurality of synchronizing mechanisms including an output-side synchronizing mechanism; a lubricating oil storage part that stores a lubricating oil which is drawn upward by rotation of the gears; a shift position detection unit that detects which of a plurality of shift positions, including a neutral position, has been selected; and a control unit which, if the neutral position has been detected by the shift position detection unit, causes a synchronizing mechanism other than the output-side synchronizing mechanism to operate, and brings a clutch into a connected state after coupling a rotating shaft other than an output shaft and a gear other than an output-side gear.

An automatic transmission of the present invention is provided with: a plurality of rotating shafts; a plurality of gears; a plurality of synchronizing mechanisms including an output-side synchronizing mechanism; a lubricating oil storage part that stores a lubricating oil which is drawn upward by rotation of the gears; a shift position detection unit that detects which of a plurality of shift positions, including a neutral position, has been selected; and a control unit which, if the neutral position has been detected by the shift position detection unit, causes a synchronizing mechanism other than the output-side synchronizing mechanism to operate, and brings a clutch into a connected state after coupling a rotating shaft other than an output shaft and a gear other than an output-side gear.

A transmission device includes a first rotating member and a ring for synchronizing the first rotating member and a second rotating member relative to each other. The first rotating member is provided with a plurality of first recesses for receiving a plurality of protrusions provided on the synchronizing ring. The first rotating member has one said first recess for each of said protrusions. The first rotating member is provided with one or more second recesses making the total number of first and second recesses exceeding the number of said protrusions.

A transmission device includes a first rotating member and a ring for synchronizing the first rotating member and a second rotating member relative to each other. The first rotating member is provided with a plurality of first recesses for receiving a plurality of protrusions provided on the synchronizing ring. The first rotating member has one said first recess for each of said protrusions. The first rotating member is provided with one or more second recesses making the total number of first and second recesses exceeding the number of said protrusions.

An automatic transmission of the present invention is provided with: a plurality of rotating shafts; a plurality of gears; a plurality of synchronizing mechanisms including an output-side synchronizing mechanism; a lubricating oil storage part that stores a lubricating oil which is drawn upward by rotation of the gears; a shift position detection unit that detects which of a plurality of shift positions, including a neutral position, has been selected; and a control unit which, if the neutral position has been detected by the shift position detection unit, causes a synchronizing mechanism other than the output-side synchronizing mechanism to operate, and brings a clutch into a connected state after coupling a rotating shaft other than an output shaft and a gear other than an output-side gear.

An automatic transmission of the present invention is provided with: a plurality of rotating shafts; a plurality of gears; a plurality of synchronizing mechanisms including an output-side synchronizing mechanism; a lubricating oil storage part that stores a lubricating oil which is drawn upward by rotation of the gears; a shift position detection unit that detects which of a plurality of shift positions, including a neutral position, has been selected; and a control unit which, if the neutral position has been detected by the shift position detection unit, causes a synchronizing mechanism other than the output-side synchronizing mechanism to operate, and brings a clutch into a connected state after coupling a rotating shaft other than an output shaft and a gear other than an output-side gear.

A transmission system for a work vehicle includes a transmission. The transmission includes one or more input shafts, one or more output shafts, and shafts disposed in-between. The transmission includes gear sets disposed on the shafts, wherein the gear sets include intermediate gear sets. The transmission includes clutches disposed along the shafts, wherein each of the clutches is configured to selectively couple a respective gear set of the gear sets corresponding to a respective power flow path of the transmission. The transmission also includes a forward coupler and a reverse coupler each disposed on one of the shafts. The transmission system also includes a controller configured to receive a signal indicative of a shuttle shift, and in response to receiving the signal, instruct the clutches to stop rotation of the intermediate gear sets and subsequently shuttle shift between forward and reverse directions.