Intermediate gear device
View Patent ↗An intermediate gear device for a traction drive and/or spur gear drive of an internal combustion engine is provided, having an intermediate gear that has an at least two-track construction with a drive gear and a driven gear, an axle, and a needle bearing by which the intermediate gear is radially mounted on the axle. At least one supporting disk is provided on which the intermediate gear is axially supported, and a duct, that is connectable to the lubricant circuit of the internal combustion engine, to supply lubricant to the needle bearing. The support disk and the axle contact one another at the end faces, the mouth of the lubricant duct that opens toward the needle bearing is formed by one or more recesses on the contact surface of the support disk and/or on the contact surface of the axle.
1. An intermediate gear device for a traction drive and/or spur gear drive of an internal combustion engine, the intermediate gear comprising an at least two-track construction with a drive gear and a driven gear, a flangeless axle, and a needle bearing by which the intermediate gear is radially mounted on the flangeless axle, two support disks on which the intermediate gear is axially supported at both sides thereof, and a duct that is adapted to be connected to a lubricant circuit of the internal combustion engine to supply lubricant to the needle bearing, the support disks contact the flangeless axle at both axial ends of the flangeless axle by respective contact surfaces of the support disks contacting adjacent contact surfaces of the flangeless axle at each of the axial ends, a mouth of the lubricant duct opens toward the needle bearing and is formed by one or more recesses on at least one of the contact surfaces on the support disks or the contact surfaces of the flangeless axle.
2. The intermediate gear device as recited in claim 1 , wherein a supply of lubricant to the needle bearing is provided to both of the axial ends of the flangeless axle.
3. The intermediate gear device as recited in claim 1 , wherein the recesses comprise an annular duct that communicates hydraulically with at least one axial opening and ribs distributed circumferentially, that branch radially outward from the annular duct.
4. The intermediate gear device as recited in claim 3 , wherein the axial opening that extends through the flangeless axle is for a screw that is adapted to fasten the intermediate gear device to the internal combustion engine.
5. The intermediate gear device as recited in claim 1 , wherein the recesses are stamped recesses formed without cutting.