| 摘要 |
PROBLEM TO BE SOLVED: To provide a caulking gun capable of positively pushing out a caulking agent from a cartridge and shortening the whole length. SOLUTION: This caulking gun is provided with a gun body 10 detachably mounted with a cartridge 20 for a caulking agent longitudinally extended and provided with a nozzle 21 at the front end part; an operating lever 38 provided at the gun body 10; a piston 24 inserted in the cartridge 20 to push out the caulking agent from the nozzle 21; and a piston pressing member for pressing to displace the piston 24 from the rear end side to the front end side of the cartridge 20 interlockingly with the operating lever 38 by pulling the operating lever, to discharge the caulking agent 22 from the nozzle 21. The piston pressing member is formed of a coil spring 25 disposed and held movably forward and backward along the gun body, with one end part curved onto the front side at the rear end part of the gun body and held to the piston 24.
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