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US 2002/0162633 A1Published application
Apparatus for detaching a tire from a vehicle wheel and the same method
AssigneeOnodani Kiko Kabushiki Kaisha
InventorYoshio Mimura
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AssigneeOnodani Kiko Kabushiki Kaisha
InventorYoshio Mimura
Estimating the term…
An apparatus and method for detaching a bead of even a tire, the ratio of which sectional height to its sectional width is small and the rigidity of which side portions is high, from the rim edge of the wheel not by manual labor, but by mechanical operation, in a safe and efficient manner. The present invention is characterized in that a tire bead separation shoe (1), which comprises a wedge portion (12) to engage with the rim edge (WR) of the wheel (W) with a tire (T) placed round that is mounted on a turntable (R) so as to shove between the rim edge and the tire bead (TB) and a tire bead fold-back portion (11), is arranged above the turntable such that it moves up and down, and a thrusting rod (4) with a claw (41) provided at its tip end portion is operated when the said wedge portion (12) is shoved between the tire bead (TB) and the rim edge (WR) of the wheel so as to shove said claw (41) between the tire bead and the rim edge and to mount a part of the tire bead as squeezed out of the wheel by the claw onto the bead fold-back portion (11) while the turntable is revolved so as to smoothly detach the whole circumference of the tire bead (TB)from the rim edge of the wheel (W).
An apparatus for detaching a tire (T) from a vehicle wheel (W) comprising a turntable (R) to rotate by means of a driving portion (D) and to detachably fix the wheel (W), round which the tire (T) is placed, thereon;
An apparatus in any one of the preceding claims wherein the boom arrangement (3) is provided with a stopper (34) to constrain the retraction speed of the back-and-forth moving rod (32).
An apparatus in any one of the preceding claims wherein a compression roller (5) is arranged in the diametrically opposite side to the thrusting rod (4).
An apparatus in any one of the preceding claims wherein a groove (12a) to receive the claw (41) of the thrusting rod into is provided on the wedge portion (12) of the tire bead separation shoe (1) so that the claw is guided through the groove upon penetration.
A method for detaching a tire (T) from a vehicle wheel (W) comprising the steps of engaging a tire bead separation shoe (1) with a rim edge (WR) of the wheel by descending an elevating rod (2) with regard to the wheel, round which the tire is placed and which is fixed on a turntable (R) so as to shove a wedge portion (12) between the rim edge and a tire bead (TB);
Dependencies are inferred from the claim text.