Air supply device

Abstract

An air supply device, comprising a motor, a reducer connected to a spindle of the motor, a driving shaft connected to an output shaft of the reducer, and a connecting rod connected to the driving shaft; a cylinder having a piston disposed therein, the connecting rod being sealed inside the cylinder and connected to the piston; a control circuit, the motor being connected to an output end of the control circuit through wires; a storage battery connected to the motor and the control circuit through the wires to supply power thereto; the piston including an adjusting lever penetrated therethrough and being movable with respect to the piston, the adjusting lever having an air supplement hole; the air supply device having advantage of small size, light weight, convenience in use, and power saving.

I claim: 
     
         1 . An air supply device, comprising:
 a motor ( 201 ), a reducer ( 202 ) connected to a spindle of the motor ( 201 ), a driving shaft ( 203 ) connected to an output shaft of the reducer ( 202 ), and a connecting rod ( 204 ) connected to the driving shaft ( 203 );   a cylinder ( 205 ) having a piston ( 206 ) disposed therein, the connecting rod ( 204 ) being sealed inside the cylinder ( 205 ) and connected to the piston ( 206 );   a control circuit ( 207 ), the motor ( 201 ) being connected to an output end of the control circuit ( 207 ) through wires ( 3 );   a storage battery ( 208 ) connected to the motor ( 201 ) and the control circuit ( 207 ) through the wires ( 3 ) to supply power thereto;   the piston ( 206 ) including an adjusting lever ( 211 ) penetrated therethrough and being movable with respect to the piston ( 206 ), the adjusting lever ( 211 ) having an air supplement hole ( 209 ).   
     
     
         2 . The air supply device according to  claim 1 , wherein a surface of the piston ( 206 ) contacting with a cylinder wall is covered with a piston seal ring ( 215 )