Dog clutch of vehicle power transmission device

A dog clutch of a vehicle power transmission device, the vehicle power transmission device including a first gear disposed relatively rotatably on a first rotating shaft rotating around an axis,

• a second gear fixed to a second rotating shaft parallel to the first rotating shaft and constantly meshed with the first gear, and
• a shift fork driven to reciprocate along the axis by an actuator driving the dog clutch,
• the dog clutch comprising:
• a sleeve supported movably in a direction of the axis and relatively non-rotatably to the first rotating shaft by the first rotating shaft via a hub disposed relatively non-rotatably to the first rotating shaft on the first rotating shaft and the sleeve including an annular outer circumferential recessed groove formed on the outer circumferential side to be engaged with the shift fork in a slidable manner,
• the dog clutch connecting/disconnecting the first rotating shaft to/from the first gear by moving the sleeve between a neutral position at which inner circumferential teeth formed on the inner circumferential side of the sleeve are not meshed with outer circumferential teeth on the side surface side of the first gear and an engagement position at which the inner circumferential teeth are meshed with the outer circumferential teeth, wherein
• the inner circumferential teeth and the outer circumferential teeth have inclined surfaces tooth thicknesses of which become larger as the inner circumferential teeth and the outer circumferential teeth approach each other, and wherein
• when the sleeve is moved to the engagement position by the shift fork, the sleeve is held in contact with a side surface of the first gear.