Crankshaft-type vacuum air pump and glass-wiping apparatus thereof

Abstract

A crankshaft-type vacuum air pump comprising a drive motor ( 1 ), an air pump main body ( 2 ), and piston air pump components ( 3 ) arranged on the air pump main body ( 2 ). A crankshaft unit is arranged within the air pump main body ( 2 ). The top of the crankshaft unit is connected to the air pump main body ( 2 ) via an upper eccentric wheel ( 4 ), while the end is connected to the drive motor ( 1 ) via a lower eccentric wheel ( 5 ). The drive motor ( 1 ) outputs power to rotate the crankshaft unit. The crankshaft unit is connected to the piston air pump components ( 3 ) and drives the piston air pump components into motion, thus completing air intake and air discharge of the piston air pump components ( 3 ). The air pump is structurally simple and compact, the crankshaft per se is centrosymmetric, and one or more crankshaft units are made to serve as a rotary shaft, where the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force. The rotary shaft is subjected to the force of piston rods on two sides that are always symmetric relative to the center of rotation, thus the rotary shaft is subjected to a radial force that is basically zero, the problem of vibration caused by unbalanced stress during rotation is greatly reduced, and a stable working state is allowed.

1 . A crankshaft-type vacuum air pump comprising a drive motor ( 1 ), an air pump main body ( 2 ), and piston air pump components ( 3 ) arranged on the air pump main body, characterized in that, a crankshaft unit is arranged within the air pump main body ( 2 ), the top of the crankshaft unit is connected to the air pump main body via an upper eccentric wheel ( 4 ), while the end is connected to the drive motor via a lower eccentric wheel ( 5 ), the drive motor ( 1 ) outputs power to rotate the crankshaft unit, the crankshaft unit is connected to the piston air pump components ( 3 ) and drives the piston air pump components into motion, thus completing air intake and air discharge of each piston air pump component. 
     
     
         2 . The crankshaft-type vacuum air pump of  claim 1 , characterized in that, the crankshaft unit comprises a crankshaft ( 7 ), an upper piston rod ( 8 ) and a lower piston rod ( 9 ) are respectively sheathed on the upper side and the lower side of the crankshaft ( 7 ), the lower piston rod ( 9 ) and the upper piston rod ( 8 ) are respectively connected to the piston air pump components ( 3 ) arranged on the different sides of the air pump main body ( 2 ). 
     
     
         3 . The crankshaft-type vacuum air pump of  claim 2 , characterized in that, the crankshaft ( 7 ) comprises a crankshaft main body ( 71 ) and two shaft portions, each of which respectively extends upward and downward from the left end and the right end of the crankshaft main body, the shaft portion of the crankshaft comprises a piston rods connection part ( 72 ) on which the piston rods are sheathed via a bearing, and an eccentric wheel connection part ( 73 ) which inserts into an eccentric hole of the eccentric wheel and is fixed therein. 
     
     
         4 . The crankshaft-type vacuum air pump of  claim 3 , characterized in that, the crankshaft is centrosymmetric. 
     
     
         5 . The crankshaft-type vacuum air pump of  claim 3 , characterized in that, the upper eccentric wheel ( 4 ) and the lower eccentric wheel ( 5 ) are structurally the same, which respectively comprises a wheel disk ( 10 ), a wheel shaft ( 11 ) is projected out from one side of the wheel disk, and an eccentric hole ( 12 ) is provided on the other side; the upper eccentric wheel ( 4 ) and the lower eccentric wheel ( 5 ) are symmetrically arranged with respect to the crankshaft unit. 
     
     
         6 . The crankshaft-type vacuum air pump of  claim 4 , characterized in that, one or more crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         7 . The crankshaft-type vacuum air pump of  claim 6 , characterized in that, two or three of the crankshaft units are employed. 
     
     
         8 . A glass-wiping apparatus, comprising a sucking unit and a walking unit, the glass-wiping apparatus being sucked on the surface of the glass via the sucking unit, wherein the sucking unit comprises a sucker and a vacuum air pump which provides vacuum sucking force to the sucker, characterized in that, the vacuum air pump employs the crankshaft type vacuum air pump of  claim 1 . 
     
     
         9 . The crankshaft-type vacuum air pump of  claim 5 , characterized in that, one or more crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         10 . The crankshaft-type vacuum air pump of  claim 5 , characterized in that two or three crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         11 . The glass-wiping apparatus of  claim 8 , characterized in that, the crankshaft unit comprises a crankshaft ( 7 ), an upper piston rod ( 8 ) and a lower piston rod ( 9 ) are respectively sheathed on the upper side and the lower side of the crankshaft ( 7 ), the lower piston rod ( 9 ) and the upper piston rod ( 8 ) are respectively connected to the piston air pump components ( 3 ) arranged on the different sides of the air pump main body ( 2 ). 
     
     
         12 . The glass-wiping apparatus of  claim 11 , characterized in that, the crankshaft ( 7 ) comprises a crankshaft main body ( 71 ) and two shaft portions, each of which respectively extends upward and downward from the left end and the right end of the crankshaft main body, the shaft portion of the crankshaft comprises a piston rods connection part ( 72 ) on which the piston rods are sheathed via a bearing, and an eccentric wheel connection part ( 73 ) which inserts into an eccentric hole of the eccentric wheel and is fixed therein. 
     
     
         13 . The glass-wiping apparatus of  claim 12 , characterized in that, the crankshaft is centrosymmetric. 
     
     
         14 . The glass-wiping apparatus of  claim 12 , characterized in that, the upper eccentric wheel ( 4 ) and the lower eccentric wheel ( 5 ) are structurally the same, which respectively comprises a wheel disk ( 10 ), a wheel shaft ( 11 ) is projected out from one side of the wheel disk, and an eccentric hole ( 12 ) is provided on the other side; the upper eccentric wheel ( 4 ) and the lower eccentric wheel ( 5 ) are symmetrically arranged with respect to the crankshaft unit. 
     
     
         15 . The glass-wiping apparatus of  claim 13 , characterized in that, one or more crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         16 . The glass-wiping apparatus of  claim 14 , characterized in that, one or more crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         17 . The glass-wiping apparatus of  claim 14 , characterized in that, one or more crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk ( 6 ), which comprises a disk body ( 61 ) and two connection seats ( 62 ) respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts ( 7 ) in two neighbouring crankshaft units. 
     
     
         18 . The glass-wiping apparatus of  claim 16 , characterized in that, two or three of the crankshaft units are employed. 
     
     
         19 . The glass-wiping apparatus of  claim 17 , characterized in that, two or three of the crankshaft units are employed.