Lubricating device for power transmission unit

Claim 1

In a power transmission unit for a motor vehicle comprising: a housing to be secured to a cylinder block of an engine, said housing having upper and lower chambers therein; a power input member located within said housing for connection to a crankshaft of the engine by means of a disengageable coupling arranged within the upper chamber of said housing, the power input member being supported from said housing by a pair of axially spaced bearings; a change-speed gearing means arranged within the lower chamber of said housing and having a mainshaft and a countershaft, each supported from said housing, parallel to said input member, by a respective pair of axially spaced bearings; and an idler shaft arranged between said power input member and said mainshaft and supported from said housing, parallel to said power input member, by a pair of axially spaced bearings, said idler shaft being provided with an idler gear and with a reverse driving gear spaced from said idler gear, said idler gear meshing in a common vertical plane with a driving gear on said power input member and with an input gear on said mainshaft, and said reverse driving gear being adapted to mesh in a common vertical plane with a reverse gear axially spaced from said input gear on said mainshaft by way of a reverse idler gear on a reverse idler shaft; the improvement wherein said housing is provided on the inner wall thereof with a protrusion located above said idler gear and having a vertical guide face to be splashed with lubricating oil pumped up by rotation of said idler gear, and an oil receiver is secured to a bearing boss of said housing, said receiver having a guide portion located above said reverse driving gear and inclined toward the bearing on said idler shaft in the region of said reverse driving gear to receive the oil dropping from said protrusion.