Inflator pump and one-way piston

Abstract

This application discloses an inflator pump and a one-way piston, including a housing. A cylindrical shell equipped with a drive mechanism is disposed in the housing, and an inclined swing piece, a piston, and a circular plate are disposed in the cylindrical shell. A top of the circular plate is provided with a piston hole, and the piston is disposed in the piston hole. A top of the circular plate is provided with a through hole, and a one-way valve is disposed in the through hole. This solution addresses the issue that most existing inflator pumps only have a single inflation function and lack the dual functionality of both suction and inflation, requiring the user to purchase an additional suction device, thus increasing usage costs.

What is claimed is: 
     
         1 . An inflator pump, comprising a housing, wherein the housing comprises a middle shell, a top of the middle shell is provided with an upper shell, a bottom of the middle shell is provided with a lower shell, the housing is mounted with a drive mechanism therein, the drive mechanism is mounted in a cylindrical shell, an inclined swing piece, a piston, and a circular plate are disposed in the cylindrical shell, a plurality of piston holes are annularly arranged at equal angles to penetrate through a top of the circular plate in a longitudinal direction, the piston is disposed in cooperation with the piston hole, the drive mechanism is configured to drive the inclined swing piece to swing and periodically push and pull the piston to reciprocate, a through hole penetrates through a center position of the top of the circular plate, a one-way valve is mounted in the through hole, a suction nozzle thread port penetrates through a top of the upper shell, and an inflation nozzle thread port penetrates through a bottom of the lower shell. 
     
     
         2 . The inflator pump according to  claim 1 , wherein the upper shell and the lower shell are integrally formed with the middle shell, and the suction nozzle thread port and the inflation nozzle thread port are each connectable to an air nozzle. 
     
     
         3 . The inflator pump according to  claim 2 , wherein the air nozzle comprises a threaded pipe end, the suction nozzle thread port and the inflation nozzle thread port are each in threaded engagement with the threaded pipe end, a top of the threaded pipe end is mounted with an air nozzle end, and the air nozzle end communicates with the threaded pipe end. 
     
     
         4 . The inflator pump according to  claim 3 , wherein a front surface of the middle shell is provided with a control panel, the control panel comprises a power button, an air pressure adjustment button, and a display screen, a controller is mounted in the middle shell, and the drive mechanism and the control panel are both electrically connected to the controller. 
     
     
         5 . The inflator pump according to  claim 4 , wherein a side wall of the middle shell is provided with an interface structure, the interface structure comprises an interface slot, a car charger DC head and a Type-C charging port are disposed in the interface slot, and a dustproof plug is detachably snapped into the interface slot. 
     
     
         6 . The inflator pump according to  claim 5 , wherein an outer wall of the housing is provided with a heat dissipation mechanism, the heat dissipation mechanism comprises a first heat dissipation outlet and a second heat dissipation outlet, the first heat dissipation outlet is disposed on a side wall of the upper shell, and the second heat dissipation outlet is disposed on the side wall of the middle shell. 
     
     
         7 . The inflator pump according to  claim 6 , wherein the drive mechanism comprises a motor, the motor is disposed on a side of a bottom of the cylindrical shell, the cylindrical shell is fixedly disposed in the middle shell, an output end of the motor penetrates through the cylindrical shell and is mounted with an output gear, an eccentric wheel is rotatably disposed in the cylindrical shell, the eccentric wheel meshes with the output gear, an eccentric rod is mounted above the eccentric wheel, the inclined swing piece is mounted above the eccentric rod, a top of the eccentric rod is provided with an eccentric hole, a central axis of the eccentric hole forms an angle with a rotation axis of the eccentric wheel, one end of a drive shaft is inserted into the eccentric hole, the other end of the drive shaft is mounted with the inclined swing piece, and the drive shaft is connected to a center position of the inclined swing piece. 
     
     
         8 . The inflator pump according to  claim 7 , wherein a periphery of the inclined swing piece is uniformly and fixedly provided with a plurality of swing arms, a connection hole penetrates through a top of the swing arm, the circular plate is fixed at an upper end inside the cylindrical shell, a bottom of the piston is fixedly provided with a piston rod, a bottom of the piston rod is fixedly provided with a connecting ball head, and the connecting ball head cooperates with the connection hole to connect the piston and the inclined swing piece. 
     
     
         9 . The inflator pump according to  claim 8 , wherein a bottom of the eccentric wheel is fixedly provided with a rotating rod, the rotating rod is rotatably mounted at a bottom inside the cylindrical shell, a bottom of the circular plate is fixedly provided with an anti-scratch washer, an inner wall of the anti-scratch washer is smooth, and the swing arm is in sliding contact with the anti-scratch washer. 
     
     
         10 . The inflator pump according to  claim 9 , wherein a top of the eccentric wheel is fixedly mounted with a connecting block, a top of the connecting block is fixedly mounted with the eccentric rod, another side of the bottom of the cylindrical shell is mounted with an intake pipe, the intake pipe penetrates through the cylindrical shell, and a penetration region between the intake pipe and the cylindrical shell is sealed. 
     
     
         11 . The inflator pump according to  claim 1 , wherein the piston comprises a cylindrical plug body, a direction in which the plug body compresses and discharges fluid in the cylindrical shell is defined as forward, an opposite direction is defined as backward, a plug rod is connected to a rear side of the plug body along an axial direction, and a flow guide channel is disposed along a periphery of the plug body;
 a sealing ring is provided in the flow guide channel, and a thickness of the sealing ring is less than a front-rear width of the flow guide channel, allowing the sealing ring to move forward and backward in the flow guide channel; an outer diameter of the sealing ring is greater than an outer diameter of the plug body, allowing the sealing ring to protrude from the periphery of the plug body and abut against an inner wall of the cylindrical shell for sealing; an inner diameter of the sealing ring is greater than a bottom radius of the flow guide channel, so as to form a first flow guide channel between the sealing ring and the flow guide channel; and a flow guide hole communicating with the first flow guide channel is disposed at a front end of the plug body; and   when the plug body moves forward, the sealing ring moves backward under friction with the inner wall of the cylindrical shell to tightly abut against a rear side wall of the flow guide channel, preventing fluid on a front side of the plug body from flowing to a rear side of the plug body; and   when the plug body moves backward, the sealing ring moves forward under friction with the inner wall of the cylindrical shell to tightly abut against a front side wall of the flow guide channel, so as to form a second flow guide channel between a rear side wall of the sealing ring and the rear side wall of the flow guide channel, allowing fluid on the rear side of the plug body to flow to the front side of the plug body sequentially through the second flow guide channel, the first flow guide channel, and the flow guide hole, thereby achieving one-way flow guide of the one-way piston.   
     
     
         12 . The inflator pump according to  claim 11 , wherein a force-bearing slot communicating with the flow guide hole is further disposed on a front side of the sealing ring, and when the plug body moves forward to compress and discharge fluid, the fluid on the front side of the plug body presses the force-bearing slot, allowing the sealing ring to move backward to tightly abut against the rear side wall of the flow guide channel. 
     
     
         13 . The inflator pump according to  claim 12 , wherein a plurality of flow guide holes are distributed uniformly and circumferentially on the front side of the plug body. 
     
     
         14 . A one-way piston, wherein the piston comprises a cylindrical plug body, a direction in which the plug body compresses and discharges fluid in a cylindrical shell is defined as forward, an opposite direction is defined as backward, a plug rod is connected to a rear side of the plug body along an axial direction, and a flow guide channel is disposed along a periphery of the plug body;
 a sealing ring is provided in the flow guide channel, and a thickness of the sealing ring is less than a front-rear width of the flow guide channel, allowing the sealing ring to move forward and backward in the flow guide channel; an outer diameter of the sealing ring is greater than an outer diameter of the plug body, allowing the sealing ring to protrude from the periphery of the plug body and abut against an inner wall of the cylindrical shell for sealing; an inner diameter of the sealing ring is greater than a bottom radius of the flow guide channel, so as to form a first flow guide channel between the sealing ring and the flow guide channel; and a flow guide hole communicating with the first flow guide channel is disposed at a front end of the plug body; and   when the plug body moves forward, the sealing ring moves backward under friction with the inner wall of the cylindrical shell to tightly abut against a rear side wall of the flow guide channel, preventing fluid on a front side of the plug body from flowing to a rear side of the plug body; and   when the plug body moves backward, the sealing ring moves forward under friction with the inner wall of the cylindrical shell to tightly abut against a front side wall of the flow guide channel, so as to form a second flow guide channel between a rear side wall of the sealing ring and the rear side wall of the flow guide channel, allowing fluid on the rear side of the plug body to flow to the front side of the plug body sequentially through the second flow guide channel, the first flow guide channel, and the flow guide hole, thereby achieving one-way flow guide of the one-way piston.   
     
     
         15 . The one-way piston according to  claim 14 , wherein a force-bearing slot communicating with the flow guide hole is further disposed on a front side of the sealing ring, and when the plug body moves forward to compress and discharge fluid, the fluid on the front side of the plug body presses the force-bearing slot, allowing the sealing ring to move backward to tightly abut against the rear side wall of the flow guide channel. 
     
     
         16 . The one-way piston according to  claim 14 , wherein a plurality of flow guide holes are distributed uniformly and circumferentially on the front side of the plug body.