Abstract: A tire mounting and demounting machine includes a turntable that holds a lower rim portion of a wheel in a detachable state and rotating the wheel about a vertical rotation axial line, a bead guiding member that guides lower and upper bead portions of a tire to fit the lower or upper bead portion to an upper rim portion of the wheel and guides the upper bead portion of the tire, which is fitted to the upper rim portion of the wheel, to be demounted from the upper rim portion, and a bead roller having a pressing surface extending in a direction going away from the rotation axial line, that presses the upper bead portion of the tire mounted on the wheel from above by the pressing surface at a location on a downstream side from the bead guiding member in a rotating direction of the turntable.

Abstract: In order to provide a method of detaching an upper bead portion of a low-profile tire or a ran flat tire easily, a bead detaching arm having an outer groove formed at a distal end portion thereof for allowing engagement of the upper bead portion therewith, and an inner groove formed at a position lower than the outer groove and on the opposite side therefrom and configured to engage with a wheel end edge is provided so as to be movable upward and downward, the bead detaching arm is pressed against a portion of a tire near the upper bead portion and deforms the same to engage an upper tire bead portion with the outer groove, the bead detaching arm is moved upward to engage the inner groove with the end edge of the wheel and, in this state, the upper tire bead portion is detached by turning the wheel.

Abstract: A cylindrical elastic member for connecting an inner cylindrical section attached to an operating axis as an axial center to an outer cylindrical section arranged outside the inner cylindrical section concentrically therewith, so as to be apart from the inner cylindrical section and surround the section, the member comprising a non-foamed elastic body and a foamed elastic body, about which in a contacting-surface of the member with the inner cylindrical section, at least a contacting-surface area with an outer circumferential end-region of the inner cylindrical section comprises the non-foamed elastic body, and in a contacting-surface of the member with the outer cylindrical section, at least contacting-surface areas with both operating-axis-direction inside surfaces of the outer cylindrical section each comprise the foamed elastic body.

Abstract: A bead pressing device of a tire mounting/dismounting apparatus is provided which separates a tire bead from a wheel rim without causing damage to the tire and enhances the efficiency of the work of exchanging the tire. A bead roller and a roller moving section are disposed on one end of a bead pressing arm that is displaced in a direction close to a rotational axis of a turntable and in a direction away from the rotational axis and which is displaced in an upward direction and in a downward direction. While the bead pressing arm is moved down, the bead roller presses a tire bead and the roller moving section displaces the bead roller in a direction close to a wheel rim to press the tire bead to the wheel drop, thereby separating the tire bead from the wheel rim.

Abstract: A mounting press device of a tire mounting/dismounting apparatus is provided which prevents the damage of a tire bead even in the case of a tire having high rigidity and mounts the tire to a wheel easily and speedily. A swing arm is provided with a first arm and a second arm. The first arm is provided with a first pressing member so that the first pressing member is movable along the first arm. The second arm is provided with a second pressing member so that the second pressing member is movable along the second arm 34 and can be moved up and down by a second moving up-and-down section. The swing arm and the first and second arms are coupled to the a moving up-and-down body of a first moving up-and-down section so as to be rotatable around an axis parallel to a rotational axis of a turntable.

Abstract: A tire bead guide device of a tire mounting/dismounting apparatus is provided which separates a tire bead from a wheel rim without causing damage to a tire and improves the efficiency of the operation of exchanging the tire. An expandable arm arranged so as to be close to/away from a rotational axis of a turntable is provided with an insertion member angularly displaced around an angular displacement axis, and an insertion member drive section presses another end of an insertion member body, thereby angularly displacing an insertion part in a direction away from the rotational axis of the turntable, and a spring biasing section angularly displaces the insertion part in a direction close to the rotational axis.

Abstract: A run flat tire support body, a method of manufacturing the run flat tire support body, and a run flat tire on which the run flat tire support body is fixedly mounted. The run flat tire support body (14) enabling a reduction in weight and the suppression of the wear of the outer surface thereof by the sliding thereof on the inner surface of a tire when the tire runs in a run flat state comprises a base material part (13) having an inner diameter allowing the support body to be fitted to a rim (16) and formed of a resin foam body of 0.3 to 0.9 g/cm3 in density, a reinforcement part (15) installed on the inner peripheral part of the base material part (13), and a non-foam resin outer layer (11) covering at least the outer peripheral surface of the base material part (13).

Abstract: An apparatus and method for detaching a bead of a tire, has a tire bead separation shoe (1), which has a wedge portion (12) which engages a rim edge (WR) of a wheel (W) having a tire (T). The rim is mounted on a turntable (R). The wedge portion (12) is between the rim edge and the tire bead (TB) and the tire bead fold-back portion (11), and is arranged above the turntable such that it moves up and down. A thrusting rod (4) having 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. The claw (41) is shoved between the tire bead and the rim edge. A part of the tire bead is squeezed out of the wheel by the claw onto the bead fold back portion (11). The turntable is revolved so as to smoothly detach the whole circumference of the tire bead (TB) from the rim edge of the tire (W).

Abstract: 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.

Abstract: A tire mounting and removing apparatus equipped with a first aid unit for making the tire to fit on the wheel, a second aid unit for preventing the tire from slipping off the wheel, and a centering unit. The tire fitting aid unit comprises a movable push plate having rolls rotatably fixed thereto and a piston-and-cylinder drive for driving the push plate thereby to push one side of the tire while rotating, and the tire slip-off preventing aid unit comprises a movable push plate having an arm swingably fixed thereto, and a piston-and-cylinder drive for driving the push plate to permit the swingable arm to push the tire with its end. These aid units facilitate the mounting and removing of a soft tire such as a tubeless tire from the wheel. The centering unit for determining the rising distance of the tire to the wheel at a predetermined level comprises a slidable upright post having a slider mounted thereto and a pneumatic piston-and-cylinder drive for moving the upright post back and forth.