Gear box of an electrical drill

Abstract

A gearbox of an electrical drill is disclosed. The drill has a main shaft and the gear box comprises a torque mechanism having an adjusting element mounted onto the main shaft and a driving element mounted within the housing, a plurality of pegs being slide-mounted onto the adjusting element and the rotating housing linked to the adjusting element to provide a displacement and the plurality of pegs engaged with the driving element to prohibit the driving element from rotating; and a vibration switching mechanism having a switching element mounted onto the main shaft and a pad mounted within the rotating housing inserted with two pegs, and the rotating housing being capable of driving the pad to rotate the switching element, and the switching element matched with the securing peg so that the main shaft has an axial displacement.

1 . A gearbox of an electrical drill having a main shaft and a rotating housing, which comprises 
 a torque mechanism having an adjusting element mounted onto the main shaft and a driving element mounted within the housing, a plurality of pegs being slide-mounted onto the adjusting element and the rotating housing linked to the adjusting element to provide a displacement and the plurality of pegs engaged with the driving element to prohibit the driving element from rotating; and    a vibration switching mechanism having a switching element mounted onto the main shaft and a pad mounted within the rotating housing inserted with two pegs, and the rotating housing being capable of driving the pad to rotate the switching element, and the switching element matched with the securing peg so that the main shaft has an axial displacement.    
   
   
       2 . The gearbox of  claim 1 , wherein the adjusting element is threaded with the rotating housing.  
   
   
       3 . The gearbox of  claim 1 , wherein the surface edge of the driving element is provided with a plurality of engaging slots for securing a plurality of pegs.  
   
   
       4 . The gear box of  claim 1 , wherein the rotating housing is provided with a plurality of protrusions, and the pad is provided with a plurality of engaging slots, and the protrusions are engaged with the engaging slot such that the rotating housing will drive the pad to rotate.  
   
   
       5 . The gear box of  claim 1 , wherein the inner edge of the pad is provided with a plurality of engaging block and the switching element is provided with engaging slot corresponding to the engaging block such that the pad drives the switching element to rotate.  
   
   
       6 . The gear box of  claim 1 , wherein the switching element is formed from a first switching ring and a second switching ring, and the second switching ring is provided with a cavity, thereby when the switching element rotates to an appropriate position, the cavity matches with the securing peg.  
   
   
       7 . The gearbox of  claim 6 , wherein the first switching ring is provided with an engaging slot and the second switching ring is provided with a corresponding engaging block, and the engaging block of the second switching ring is engaged and mounted at the engaging slot of the first switching ring.