Air compressor

Abstract

Disclosed is an air compressor including a cylinder including a recessed compression chamber, and an orbiter including a frame forming a main body and a piston rod protruding from the frame, wherein the piston rod includes a piston rod inner circumferential surface and a piston rod outer circumferential surface, the piston rod having an ending part formed at its end to protrude from the frame, a diameter of an imaginary circle derived from the curvature formed on the ending part formed at the end of the piston rod is larger than a width ranging from the piston rod inner circumferential surface to the piston rod outer circumferential surface, the piston rod is shaped of a transformed ring having a non-continuous portion, the piston rod inner circumferential surface is an inner circumferential surface shaped of the transformed ring, the piston rod outer circumferential surface is an outer circumferential surface shaped of the transformed ring, and the ending part is defined by the non-continuous portion of the transformed ring. Therefore, in compressing the external air due to a contact between the closed surface of the terminal portion of the compression chamber and the ending part of the terminal portion of the piston rod, a contact area is increased, thereby increasing the compressive force of the air compressor.

What is claimed is: 
     
         1 . An air compressor comprising:
 a cylinder including a recessed compression chamber; and   an orbiter including a frame forming a main body and a piston rod protruding from the frame,   wherein the piston rod includes a piston rod inner circumferential surface and a piston rod outer circumferential surface, the piston rod having an ending part formed at its end to protrude from the frame, a diameter of an imaginary circle derived from the curvature formed on the ending part formed at the end of the piston rod is larger than a width ranging from the piston rod inner circumferential surface to the piston rod outer circumferential surface, the piston rod is shaped of a transformed ring having a non-continuous portion, the piston rod inner circumferential surface is an inner circumferential surface shaped of the transformed ring, the piston rod outer circumferential surface is an outer circumferential surface shaped of the transformed ring, and the ending part is defined by the non-continuous portion of the transformed ring.   
     
     
         2 . The air compressor of  claim 1 , wherein the ending part includes a first end and a second end, and the first end and the second end are defined by the non-continuous portion without the piston rod protruding therefrom. 
     
     
         3 . The air compressor of  claim 1 , wherein the compression chamber includes a compression chamber inner circumferential surface and a compression chamber outer circumferential surface, the compression chamber including a closed surface at an end to be recessed inside the cylinder, and a diameter of an imaginary circle derived from the curvature formed on the closed surface at the end of the compression chamber is larger than a width ranging from the compression chamber inner circumferential surface to the compression chamber outer circumferential surface. 
     
     
         4 . The air compressor of  claim 3 , wherein the closed surface includes a first closed surface and a second closed surface, and the first closed surface and the second closed surface are defined by the closed part in which the compression chamber is not recessed. 
     
     
         5 . The air compressor of  claim 4 , wherein the cylinder further includes an air intake formed to penetrate one side of the compression chamber with respect to the closed part and an air outlet formed to penetrate the other side of the compression chamber.