| 摘要 |
<p>The invention relates to a plug cap freely mountable on or removable from an elongated bore 21 for the ignition plug in internal combustion engines or the like. The plug cap is provided with a rain cover portion 27, a sealing portion 12 and a pipe-holding portion 15. The latter is provided, on its internal circular face, with a circular groove 13 and a plurality of protrusions 14 projecting towards the central axis. These grooves and protrusions and subsequent deflection thereof, give an elasticity to the sealing portion 12 and to the pipe-holding portion 15. When the plug cap is pressed into the elongated bore 21 for the ignition plug, there is not curling up of the sealing portion 12 occurring as this was the case heretofore, thereby ensuring a reliable sealing. After insertion, the protrusions 14 of the pipe-holding portion 15, which are formed integrally with the sealing portion 12, are pressed onto the external circular face of the ignition pipe 19, so that the latter can be held more reliably. <IMAGE></p> |
