Oil pressure braking pump with different braking stages

Abstract

An oil pressure braking pump, comprises a supporting frame having a receiving space; a piston and an adjusting unit being received in the receiving space; a handle being installed to the supporting frame; the handle serving to actuate a piston within the supporting frame; the piston being driven by the handle; an adjusting unit having a plurality of elastic units which has different elastic coefficients so as to push a pneumatic pressure device with different stages. The handle can push the piston; and then the piston pushes the adjusting unit to further drive the pneumatic pressure device with different stages.

1 . An oil pressure braking pump, comprising:
 a supporting frame having a receiving space; a piston and an adjusting unit being received in the receiving space;   a handle being installed to the supporting frame; the handle serving to actuate a piston within the supporting frame;   the piston being driven by the handle;   an adjusting unit having a plurality of elastic units which has different elastic coefficients so as to push a pneumatic pressure device with different stages; and   wherein the handle can push the piston; and then the piston pushes the adjusting unit to further drive the pneumatic pressure device with different stages.   
   
   
       2 . The oil pressure braking pump as claimed in  claim 1 , wherein the handle having a holding end and a push unit; the holding end is interacted with a push unit. 
   
   
       3 . The oil pressure braking pump as claimed in  claim 1 , wherein a bottom of the supporting frame having an installing hole by which the supporting frame can be assembled to a vehicle. 
   
   
       4 . The oil pressure braking pump as claimed in  claim 1 , wherein the adjusting unit includes a first elastic unit and a second elastic unit. 
   
   
       5 . The oil pressure braking pump as claimed in  claim 4 , wherein the adjusting unit further includes a round cover and a pneumatic pressure pushing cover; one end of the second elastic unit is installed to the piston and another end of the second elastic unit is installed to the pneumatic pressure pushing cover; the second elastic unit is longer than the first elastic unit; a diameter of the first elastic unit is greater than that of the second elastic unit; an elastic coefficient of the second elastic unit is smaller than that of the first elastic unit; the round cover has a through hole; the second elastic unit passes through the through hole of the round cover and is received within the first elastic unit; both of the first elastic unit and second elastic unit are assembled to the pneumatic pressure pushing cover. 
   
   
       6 . The oil pressure braking pump as claimed in  claim 1 , wherein the piston has a rod structure. 
   
   
       7 . The oil pressure braking pump as claimed in  claim 4 , wherein the pneumatic pressure pushing cover is interacted with a pneumatic pressure device. 
   
   
       8 . The oil pressure braking pump as claimed in  claim 1 , wherein when the pneumatic pressure pushing cover is pushed, it will push the pneumatic pressure device so as to have the effect of braking.