Patent ID: 8701328

Claim:
A bidirectional gun bore cleaning device using a manual impact force and configured to be coupled to an end of a cleaning rod for cleaning a bore of a gun barrel, the bidirectional gun bore cleaning device comprising: a hollow tubular body ( 110 ) comprising a cleaning rod coupling portion ( 111 ) at a rear end thereof for coupling with the end of the cleaning rod ( 11 ), and a screw coupling portion ( 112 ) at a front end thereof; a striking hammer body ( 210 ) comprising a rear hammer portion ( 211 ) having threads for coupling with the screw coupling portion ( 112 ) formed on the front end of the tubular body ( 110 ), a front hammer portion ( 212 ) formed in one piece with the rear hammer portion ( 211 ) and protruding forward, and a guide-rod passage hole ( 213 ) formed through center regions of the rear hammer portion ( 211 ) and the front hammer portion ( 212 ); a guide rod ( 310 ) inserted in the striking hammer body ( 210 ) through the guide-rod passage hole ( 213 ) and slidable back and forth therein, the guide rod ( 310 ) comprising a front striking plate coupling portion ( 311 ) which is formed at a front end thereof and protrudes forward from the striking hammer body ( 210 ); an internal rear striking plate ( 410 ) coupled to a rear end of the guide rod ( 310 ) and placed in the tubular body ( 110 ), the internal rear striking plate ( 410 ) functioning as a weight; a front striking plate ( 510 ) comprising a striking face ( 511 ) formed on a rear end thereof and coupled to the front striking plate coupling portion ( 311 ) of the guide rod ( 310 ) for being struck by the front hammer portion ( 212 ) of the striking hammer body ( 210 ), and a cleaning brush coupling portion ( 512 ) formed on a front end thereof; and a cleaning brush ( 610 ) coupled to the cleaning brush coupling portion ( 512 ) of the front striking plate ( 510 ), wherein if the cleaning rod ( 11 ) is pushed forward, the front hammer portion ( 212 ) of the striking hammer body ( 210 ) collides with the striking face ( 511 ) of the front striking plate ( 510 ) so that a striking force is transmitted to the cleaning brush ( 610 ), and if the cleaning rod ( 11 ) is pulled backward, a rear end of the rear hammer portion ( 211 ) of the striking hammer body ( 210 ) collides with the internal rear striking plate ( 410 ) so that a striking force is transmitted to the cleaning brush ( 610 ).