| 摘要 |
The device for fixing a plug in a support (100), with a piston (6) propelled by compressed gas,comprises a cylinder (5) in which the piston (6) is mounted, a combustio n chamber (3), a combustion chamber sleeve (4) intended to close the chamber (3) at the rear with a cylinder head (2) and at the front with the piston (6) and the cylinder (5), a plug guide (8) acting as a probe for placing in abutment and for closing the combustion chamber (3). A pushing surface (30) and an abutment surface (29), which are respectively fixedly attached t o the plug guide (8) and to the sleeve (4), are arranged to be fixedly attached to each other in a rearward translational movement when the plug guide (8) is placed into abutment, in order to close the combustion chamber (3), and to become detached from each other upon recoil o f the device in reaction to firing in order to ensure that the plug guide (8) is kept in abutment against the support (100).
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