Air compressor core

Abstract

The present invention provides an air compressor core, comprising a drive assembly, a transmission assembly and a cylinder assembly, the drive assembly being arranged parallel to the cylinder assembly, the transmission assembly being arranged at a same end as the drive assembly and the cylinder assembly; and the drive assembly comprises a motor and the cylinder assembly comprises a cylinder, the motor being arranged parallel to the cylinder. With the air compressor core provided by the present invention, by the arrangement of the drive assembly parallel to the cylinder assembly and the arrangement of the transmission assembly at a same end as the drive assembly and the cylinder assembly, the utilization of the space structure of the entire core is optimized, without any waste of space. The overall size and volume of the air compressor may be effectively reduced.

What is claimed is: 
     
         1 . An air compressor core, comprising a drive assembly, a transmission assembly and a cylinder assembly, the drive assembly being arranged parallel to the cylinder assembly, the transmission assembly being arranged at a same end as the drive assembly and the cylinder assembly; wherein the drive assembly comprises a motor and the cylinder assembly comprises a cylinder, the motor is arranged parallel to the cylinder. 
     
     
         2 . The air compressor core according to  claim 1 , wherein the transmission assembly comprises a driving gear, a transmission gear, a transition gear and a crank gear, a rotating shaft of the driving gear being perpendicular to a rotating shaft of the transmission gear; the transmission gear has coaxial spur teeth thereon, the driving gear is engaged with the transmission gear, the spur teeth on the transmission gear are engaged with the transition gear, and the transition gear is engaged with the crank gear; the motor drives the driving gear to rotate, the driving gear drives the transmission gear, the spur teeth of the transmission gear drive the transition gear, the transition gear drives the crank gear; and the crank gear is connected to a piston through a connecting rod which drives the piston to move within the cylinder. 
     
     
         3 . The air compressor core according to  claim 2 , wherein a cylinder head is provided at an end, far away from the crank gear, of the cylinder, and a pressure sensor is assembled on the cylinder head. 
     
     
         4 . The air compressor core according to  claim 3 , wherein an exhaust valve is provided between an air outlet and the cylinder head of the cylinder, and an exhaust valve spring is provided on the exhaust valve at an end of the cylinder head. 
     
     
         5 . The air compressor core according to  claim 2 , wherein a wearing ring is assembled at an internal end of the piston, and the position of the wearing ring relative to the piston is fixed; an annular groove is provided at an outer end of the piston, and a plurality of intake grooves uniformly distributed is provided in the periphery of an end surface of the outer end of the piston, with the intake groove and the annular groove being arranged alternately; and a piston seal ring is assembled on the annular groove. 
     
     
         6 . The air compressor core according to  claim 3 , wherein a nozzle seal ring is sleeved on a nozzle of the cylinder head; a threaded female nozzle is assembled to the nozzle seal ring, the threaded female nozzle being a round pipe having threads therein, the inner diameter of the threaded female nozzle being larger than the outer diameter of the nozzle seal ring; and a threaded female nozzle cover is mounted on the cylinder head, the opening diameter of the threaded female nozzle cover being smaller than the outer diameter of the threaded female nozzle. 
     
     
         7 . The air compressor core according to  claim 2 , wherein a piston seal ring and a wearing ring are sleeved on the piston, and the positions of the piston seal ring and the wearing ring relative to the piston are fixed; one end of the piston is connected to the connecting rod through a piston shaft, and a stepped hole is formed on the other end of the piston, with an intake valve, an intake valve spring and an intake valve cover being provided within the stepped hole from inside to outside, successively, the intake valve being a step structure; and the intake valve spring is sleeved on a narrow end of the intake valve, and the intake valve spring is resisted against the intake valve cover. 
     
     
         8 . The air compressor core according to  claim 2 , wherein the driving gear, the transmission gear, the transition gear and the crank gear are all arranged in a gearbox which mainly consists of a upper gearbox and a lower gearbox; and a first ball bearing is provided on each of a upper segment and a lower segment of a transmission gear shaft of the transmission gear, and a second ball bearing is provided on each of a upper segment and a lower segment of a transition gear shaft of the transition gear. 
     
     
         9 . The air compressor core according to  claim 3 , wherein the thickness of a PCB of the pressure sensor ranges from 0.6 mm to 2 mm; a piece of metal support is added outside the PCB, the metal support being secured onto the cylinder head through screws; and there is a pad on the PCB. 
     
     
         10 . The air compressor core according to  claim 1 , wherein the cylinder assembly comprises a double-valve cylinder; a double-valve cylinder head is provided at one end, far away from the transmission assembly, of the double-valve cylinder, with an air inlet opening and an air outlet opening both provided on the double-valve cylinder head; both an air inlet and an air outlet of the double-valve cylinder are provided at one end, far away from the transmission assembly, of the double-valve cylinder; and an intake valve for the double-valve cylinder and an intake valve spring for the double-valve cylinder are successively arranged between the air inlet opening and the air outlet, and an exhaust valve spring for the double-valve cylinder and an exhaust valve for the double-valve cylinder are successively arranged between the air outlet opening and the air outlet.