Lubrication structure for a manual transmission

Abstract

A lubrication structure for a manual transmission having a control housing disposed on an upper portion of the transmission case and within which a control shaft is installed. An open portion leading to the control housing is formed in an upper portion of the transmission case, and at least one oil drain hole for discharging oil having entered the control housing through the open portion is formed near the open portion. Therefore, oil in the control housing is discharged to an oil guide through the oil drain hole, and the oil is prevented from being discharged through the air breather, so an efficient lubrication structure can be obtained.

1 . A lubrication structure for a manual transmission having a control housing that is disposed on an upper portion of a transmission case and within which a control shaft is installed, wherein an open portion leading to the control housing is formed in an upper portion of the transmission case, and wherein at least one oil drain hole for discharging oil having entered the control housing through the open portion is formed near the open portion.  
     
     
         2 . The lubrication structure of  claim 1 , wherein an air breather is installed in an upper portion of the control housing.  
     
     
         3 . The lubrication structure of  claim 1 , wherein an oil guide is provided inside the transmission case, and wherein one of the at least one oil drain hole is formed at a position where the oil passing through the oil drain hole is discharge to the oil guide.  
     
     
         4 . The lubrication structure of  claim 1 , wherein the at least one oil drain hole comprises two oil drain holes that are formed respectively on both sides of the open portion.  
     
     
         5 . The lubrication structure of  claim 2 , wherein one of the at least one oil drain hole is formed under the air breather.