| 摘要 |
<p>A tool for assistance in removing tires from wheel rims. The tool has a body with a lateral opening (6) for engaging the flange of a wheel rim. A roller (281) is mounted on one end of the tool body to exert a downward pressure on the tire sidewall, and a handle (102) protrudes on an end opposite the cavity and fulcrum from the roller. The roller displaces the tire bead from its seat against the rim when removing or installing the bead of a tire that is already at least partly on the rim, or supports the second bead of a tire whose first bead is axially outside of the rim relative to the wheel rotation axis. Displacing the bead from its seat opens a radial clearance between the bead and the rim, so that the tire can be displaced eccentrically to relieve tension on the bead due to prying on a diametrically opposite side of the tire. The roller has a rotation axis (240) tangential to the rim, and thus is positioned to facilitate eccentric displacement of the tire on the rim by radial displacement in the area of the roller.
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