Abstract: A first chamber for introducing thereinto the air inside a transmission case from an introduction opening, a second chamber for leading out air from a lead-out hole to a vent valve, and a shielding part for shielding the first and second chambers excluding a ventilation opening so that the first chamber is larger than the second chamber in volume are formed adjacent to a plate member in a first case. The introduction opening is formed by separating side surfaces of the first and second chambers using the plate member.

Abstract: A first chamber for introducing thereinto the air inside a transmission case from an introduction opening, a second chamber for leading out air from a lead-out hole to a vent valve, and a shielding part for shielding the first and second chambers excluding a ventilation opening so that the first chamber is larger than the second chamber in volume are formed adjacent to a plate member in a first case. The introduction opening is formed by separating side surfaces of the first and second chambers using the plate member.

Abstract: Provided with a hollow piping member attached in a casing and a guide member integrally installed on an outer peripheral surface of the piping member. The guide member is structured by a plurality of surfaces including a first surface on which at least part of hydraulic fluid pumped up by a final gear is received and a second surface connected to one end of the first surface extending along a side of the final gear, and fastened to the casing by a fastener. The guide member receives hydraulic fluid pumped up by the final gear, restraining the fluid from reaching a breather mechanism and neighborhoods thereof.

Abstract: Provided with a hollow piping member attached in a casing and a guide member integrally installed on an outer peripheral surface of the piping member. The guide member is structured by a plurality of surfaces including a first surface on which at least part of hydraulic fluid pumped up by a final gear is received and a second surface connected to one end of the first surface extending along a side of the final gear, and fastened to the casing by a fastener. The guide member receives hydraulic fluid pumped up by the final gear, restraining the fluid from reaching a breather mechanism and neighborhoods thereof.

Abstract: A baffle plate support structure supports a baffle plate inside a casing of a transmission. The baffle plate support structure includes a fixing portion and a supporting portion. The fixing portion secures a fixed end of the baffle plate to the casing by tightening bolts. The fixed end is one end of the baffle plate. The supporting portion supports a supported end of the baffle plate with respect to the casing. The supported end is another end of the baffle plate. The supporting portion has protruding ribs formed on an inner surface of the casing. The supporting portion is positioned such that the protruding ribs have a clearance of predetermined distance with respect to the supported end of the baffle plate in a vibrating direction of the supported end.

Abstract: A baffle plate support structure supports a baffle plate inside a casing of a transmission. The baffle plate support structure includes a fixing portion and a supporting portion. The fixing portion secures a fixed end of the baffle plate to the casing by tightening bolts. The fixed end is one end of the baffle plate. The supporting portion supports a supported end of the baffle plate with respect to the casing. The supported end is another end of the baffle plate. The supporting portion has protruding ribs formed on an inner surface of the casing. The supporting portion is positioned such that the protruding ribs have a clearance of predetermined distance with respect to the supported end of the baffle plate in a vibrating direction of the supported end.