Anti - leak device in a fan

Abstract

An anti-leakage device in a fan mainly includes a blade assembly, a fan base and a motor section. The fan base is provided with a plurality of lock holes at the bottom of the spindle seat with an oil cap being pressed into a hollow space of the spindle seat of the fan base and a plurality of engaging juts are provided on the oil cap to engage with the lock holes of the spindle seat with an oil ring being placed between the spindle seat and the oil cap. The anti-leakage device has a tight engagement structure to perform prevention of the lubrication oil leakage and the bearing seat and the spindle in the blade hub constitute a joint with a slant angle and an oil resistant groove to avoid the lubrication oil leaking outward the fan via the spindle and the bearing seat.

What is claimed is:  
     
         1 . An anti-leakage device in a fan, comprising: 
 a blade assembly, being provided with a fan blade hub, a spindle being inserted into a bearing;    a fan base, having a hollow spindle seat at a center area thereof for receiving a bearing; and    a motor set, being disposed on the fan base;    characterized in that: 
 a plurality of lock holes are arranged at a bottom of the spindle seat with an oil cap being pressed into a hollow space of the spindle seat and a plurality of engaging juts are provided on the oil cap to engage with the lock hole of the spindle seat with an oil ring being placed between the spindle seat and the oil cap.  
   
     
     
         2 . The anti-leak device as defined in  claim 1 , wherein a bearing seat is form in the fan blade hub and a joint between the bearing seat and the spindle has a slant angle.  
     
     
         3 . The anti-leak device as defined in  claim 1 , wherein an oil resistant groove is located at the fan blade hub.