Dual-chamber dual-action air pump and glass-wiping robot having the air pump

Abstract

A dual-chamber dual-action air pump and a glass-wiping robot having the air pump. The air pump comprises a cylinder and, connected to the cylinder, a drive apparatus and a piston. The drive apparatus drives the piston via a transmission apparatus to perform reciprocating movement in the cylinder. A sealing element fixedly connected to the piston rod is arranged within the cylinder. The sealing element partitions the cylinder into a first chamber (A 1 ) and a second chamber (A 2 ). Both the first chamber and the second chamber respectively are provided with a first one-way valve and a second one-way valve. When the piston rod drives the sealing element to perform reciprocating movement, the first chamber and the second chamber simultaneously inhale air and exhaust air. The dual-chamber dual-action air pump is compact in structure, and provides doubled air flow rate and doubled efficiency. The glass-wiping robot having the air pump provides a suction cup with a vacuum suction force via the air pump, and allows for great air evacuation to be ensured for the suction cups even if the suction cup comes in contact with a crack or bump on a glass surface, thus reducing the risks of the damage of the glass-wiping robot due to falling, and eliminating possible security hazards.

1 . A dual-chamber dual-action air pump comprising a cylinder, and a drive apparatus and a piston that are connected with the cylinder, the drive apparatus drives the piston via a transmission apparatus to perform reciprocating movement in the cylinder, characterized in that: a sealing element fixedly connected with the piston rod is provided in the cylinder, the sealing element partitions the cylinder into a first chamber (A 1 ) and a second chamber (A 2 ), the first chamber (A 1 ) and the second chamber (A 2 ) are respectively provided with a first one-way valve and a second one-way valve, and when the piston rod drives the sealing element to perform reciprocating movement, the first chamber (A 1 ) and the second chamber (A 2 ) simultaneously inhale air and exhaust air. 
     
     
         2 . The dual-chamber dual-action air pump according to  claim 1 , characterized in that, the air pump comprises an air pump body ( 10 ), the drive apparatus is connected with the air pump body ( 10 ), and two said cylinders are provided on both sides of the air pump body ( 10 ) in a sealed manner, the cylinders each comprise an air pump end cover ( 31 ), an air pump middle frame cover ( 32 ) and an air pump middle frame ( 37 ) connected in a sealed manner from the outside to inside, the air pump middle frame ( 37 ) is connected with the air pump body ( 10 ) in a sealed manner, the sealing element is provided between the air pump middle frame ( 37 ) and the air pump middle frame cover ( 32 ), the sealing element and the air pump middle frame cover ( 32 ) form the first chamber (A 1 ), the air pump middle frame cover ( 32 ) and the air bump end cover ( 31 ) form the first one-way valve, a soft gum membrane and the air pump middle frame form the second chamber (A 2 ), and the air pump middle frame ( 37 ) and the air pump body ( 10 ) form the second one-way valve. 
     
     
         3 . The dual-chamber dual-action air pump according to  claim 1 , characterized in that, the sealing element is a soft gum membrane, and the soft gum membrane is connected with the piston rod in a sealed manner. 
     
     
         4 . The dual-chamber dual-action air pump according to  claim 3 , characterized in that, the soft gum membrane comprises a support ( 34 ) and a membrane part ( 35 ), the membrane part ( 35 ) has inner sealing rings and outer sealing rings ( 36 ) provided on both sides of the support ( 34 ) and connected via a retractable middle portion, the inner sealing rings and the outer sealing rings ( 36 ) are attached to both sides of the air pump middle frame ( 37 ) in a sealed manner respectively, the outer sealing rings ( 36 ) are fixedly connected with the support ( 34 ), and the support ( 34 ) is fixedly connected with the piston rod ( 33 ). 
     
     
         5 . The dual-chamber dual-action air pump according to  claim 2 , characterized in that, the first one-way valve comprises an inlet room ( 350 ) and an outlet room ( 360 ) provided on the air pump end cover ( 31 ) and an inlet room ( 370 ) and an outlet room ( 380 ) provided on the air pump middle frame cover ( 32 ); when the air pump end cover ( 31 ) and the air pump middle frame cover ( 32 ) are engaged, their inlet rooms and the outlet rooms form closed spaces in each of which sealing pads ( 38 ) are provided; inlet holes ( 311 ,  321 ) are provided on the inlet rooms ( 350 ,  370 ), outlet holes ( 312 ,  322 ) are provided in the outlet rooms ( 360 ,  380 ), and the sealing pads ( 38 ) perform reciprocating movement in the closed spaces under the action of airflow of the inlet holes and the outlet holes; the inlet holes and the outlet holes are arranged symmetrically in an intersecting manner on both sides of the closed spaces, and when the sealing pads ( 38 ) are attached on one of the air pump end cover ( 31 ) side and the air pump middle frame cover ( 32 ) side, air flows through one of the inlet holes or the outlet holes;
 the second one-way valve comprises an inlet room and an outlet room provided on the air pump middle frame ( 37 ) and an inlet room and an outlet room provided on the air pump body ( 10 ); when the air pump middle frame ( 37 ) and the air pump body ( 10 ) are engaged, their inlet rooms and outlet rooms form closed spaces in each of which sealing pads ( 38 ) are provided; inlet holes are provided on the inlet rooms, outlet holes are provided on the outlet rooms, and the sealing pads ( 38 ) perform reciprocating movement in the closed spaces under the action of airflow of the inlet holes and the outlet holes; the inlet holes and the outlet holes are arranged symmetrically in an intersecting manner on both sides of the closed spaces, and when the sealing pads ( 38 ) are attached on one of the air pump middle frame ( 37 ) side and the air pump body ( 10 ) side, air flows through one of the inlet holes or the outlet holes.   
     
     
         6 . The dual-chamber dual-action air pump according to  claim 5 , characterized in that, the inlet hole is provided at the center of the inlet room and its number is one, and the outlet holes are provided symmetrically on both sides of the central line of the outlet room and are oppositely located on both sides of the inlet hole; or the inlet holes are provided symmetrically on both sides of the central line of the inlet room and are oppositely located on both sides of the inlet hole, and the outlet hole is provided at the center of the outlet room and its number is one;
 the diameter of the inlet holes and the outlet holes is the same as the width of the sealing pads ( 38 ).   
     
     
         7 . The dual-chamber dual-action air pump according to  claim 2 , characterized in that, an inlet pipe ( 313 ) and an outlet pipe ( 314 ) of the first chamber are provided on the air pump end cover ( 31 ), and an inlet pipe ( 103 ) and an outlet pipe ( 104 ) of the second chamber are provided on the air pump body ( 10 ). 
     
     
         8 . The dual-chamber dual-action air pump according to  claim 2 , characterized in that, the transmission apparatus is an eccentric shaft ( 51 ) fitted over the output shaft, and an end of the piston rod ( 33 ) is fitted over on the eccentric shaft ( 51 ). 
     
     
         9 . The dual-chamber dual-action air pump according to  claim 2 , characterized in that, the transmission apparatus is a crankshaft mechanism connected with an output shaft of the drive apparatus. 
     
     
         10 . The dual-chamber dual-action air pump according to  claim 9 , characterized in that, the crankshaft mechanism comprises lower eccentric wheel, upper eccentric wheel ( 41 ) and a crankshaft ( 43 ), the crankshaft ( 43 ) comprises a crankshaft body and two shaft portions, the two shaft portions extend upward and downward on the left and right sides of the crankshaft body respectively; the shaft portions of the crankshaft comprise connection portions for the piston rods ( 33 ) and connection portions for the eccentric wheels, the piston rods ( 33 ) are fitted over the connection portions for the piston rods via bearings, and the connection portions for the eccentric wheels are inserted into eccentric holes of the eccentric wheels ( 43 ) so as to be fixed. 
     
     
         11 . The dual-chamber dual-action air pump according to  claim 2 , characterized in that, the transmission apparatus is an eccentric wheel mechanism connected with an output shaft of the drive apparatus, the eccentric wheel mechanism comprises an eccentric wheel ( 61 ) fixed on the output shaft, and a ring-shaped limitation groove ( 611 ) is provided on one side surface of the eccentric wheel ( 61 ); the end of the piston rod ( 33 ) of each piston air pump assembly is provided with a roller wheel ( 331 ), the roller wheel ( 331 ) is embedded in the ring-shaped limitation groove ( 611 ), the output shaft drives the eccentric wheel ( 61 ) to rotate, the roller wheel ( 331 ) rolls along the circumference direction of the output shaft in the ring-shaped limitation groove ( 611 ) and drives the piston rod ( 33 ) to perform reciprocating movement. 
     
     
         12 . A glass-wiping robot, comprising a machine body and a suction cup provided on the machine boy, characterized in that, the suction cup is connected with the dual-chamber dual-action air pump according to  claim 1 , and the inlet pipe ( 313 ) of the first chamber and the inlet pipe ( 103 ) of the second chamber are connected with the suction cup respectively. 
     
     
         13 . The glass-wiping robot according to  claim 12 , characterized in that, the air pump comprises an air pump body ( 10 ), the drive apparatus is connected with the air pump body ( 10 ), and two said cylinders are provided on both sides of the air pump body ( 10 ) in a sealed manner, the cylinders each comprise an air pump end cover ( 31 ), an air pump middle frame cover ( 32 ) and an air pump middle frame ( 37 ) connected in a sealed manner from the outside to inside, the air pump middle frame ( 37 ) is connected with the air pump body ( 10 ) in a sealed manner, the sealing element is provided between the air pump middle frame ( 37 ) and the air pump middle frame cover ( 32 ), the sealing element and the air pump middle frame cover ( 32 ) form the first chamber (A 1 ), the air pump middle frame cover ( 32 ) and the air bump end cover ( 31 ) form the first one-way valve, a soft gum membrane and the air pump middle frame form the second chamber (A 2 ), and the air pump middle frame ( 37 ) and the air pump body ( 10 ) form the second one-way valve. 
     
     
         14 . The glass-wiping robot according to  claim 12 , characterized in that, the sealing element is a soft gum membrane, and the soft gum membrane is connected with the piston rod in a sealed manner. 
     
     
         15 . The glass-wiping robot according to  claim 14 , characterized in that, the soft gum membrane comprises a support ( 34 ) and a membrane part ( 35 ), the membrane part ( 35 ) has inner sealing rings and outer sealing rings ( 36 ) provided on both sides of the support ( 34 ) and connected via a retractable middle portion, the inner sealing rings and the outer sealing rings ( 36 ) are attached to both sides of the air pump middle frame ( 37 ) in a sealed manner respectively, the outer sealing rings ( 36 ) are fixedly connected with the support ( 34 ), and the support ( 34 ) is fixedly connected with the piston rod ( 33 ). 
     
     
         16 . The glass-wiping robot according to  claim 13 , characterized in that, the first one-way valve comprises an inlet room ( 350 ) and an outlet room ( 360 ) provided on the air pump end cover ( 31 ) and an inlet room ( 370 ) and an outlet room ( 380 ) provided on the air pump middle frame cover ( 32 ); when the air pump end cover ( 31 ) and the air pump middle frame cover ( 32 ) are engaged, their inlet rooms and the outlet rooms form closed spaces in each of which sealing pads ( 38 ) are provided; inlet holes ( 311 ,  321 ) are provided on the inlet rooms ( 350 ,  370 ), outlet holes ( 312 ,  322 ) are provided in the outlet rooms ( 360 ,  380 ), and the sealing pads ( 38 ) perform reciprocating movement in the closed spaces under the action of airflow of the inlet holes and the outlet holes; the inlet holes and the outlet holes are arranged symmetrically in an intersecting manner on both sides of the closed spaces, and when the sealing pads ( 38 ) are attached on one of the air pump end cover ( 31 ) side and the air pump middle frame cover ( 32 ) side, air flows through one of the inlet holes or the outlet holes;
 the second one-way valve comprises an inlet room and an outlet room provided on the air pump middle frame ( 37 ) and an inlet room and an outlet room provided on the air pump body ( 10 ); when the air pump middle frame ( 37 ) and the air pump body ( 10 ) are engaged, their inlet rooms and outlet rooms form closed spaces in each of which sealing pads ( 38 ) are provided; inlet holes are provided on the inlet rooms, outlet holes are provided on the outlet rooms, and the sealing pads ( 38 ) perform reciprocating movement in the closed spaces under the action of airflow of the inlet holes and the outlet holes; the inlet holes and the outlet holes are arranged symmetrically in an intersecting manner on both sides of the closed spaces, and when the sealing pads ( 38 ) are attached on one of the air pump middle frame ( 37 ) side and the air pump body ( 10 ) side, air flows through one of the inlet holes or the outlet holes.   
     
     
         17 . The glass-wiping robot according to  claim 16 , characterized in that, the inlet hole is provided at the center of the inlet room and its number is one, and the outlet holes are provided symmetrically on both sides of the central line of the outlet room and are oppositely located on both sides of the inlet hole; or the inlet holes are provided symmetrically on both sides of the central line of the inlet room and are oppositely located on both sides of the inlet hole, and the outlet hole is provided at the center of the outlet room and its number is one;
 the diameter of the inlet holes and the outlet holes is the same as the width of the sealing pads ( 38 ).   
     
     
         18 . The glass-wiping robot according to  claim 13 , characterized in that, an inlet pipe ( 313 ) and an outlet pipe ( 314 ) of the first chamber are provided on the air pump end cover ( 31 ), and an inlet pipe ( 103 ) and an outlet pipe ( 104 ) of the second chamber are provided on the air pump body ( 10 ) 
     
     
         19 . The glass-wiping robot according to  claim 13 , characterized in that, the transmission apparatus is an eccentric shaft ( 51 ) fitted over the output shaft, and an end of the piston rod ( 33 ) is fitted over on the eccentric shaft ( 51 ) 
     
     
         20 . The glass-wiping robot according to  claim 13 , characterized in that, the transmission apparatus is a crankshaft mechanism connected with an output shaft of the drive apparatus.