| 主权项 |
1. A vehicle wheel comprising:
a rim including two tire engagement portions respectively on two outer sides thereof and spaced from each other in a longitudinal direction; an inflatable tire mounted around the rim, with the inflatable tire being a hollow annular member which is U-shaped in radial cross section and which has an inwardly facing opening, with the inflatable tire including an inner annular bottom wall surrounding the rim and having left and right sides, with the inflatable tire further including two inner annular sidewalls respectively extending radially inwards from the left and right sides of the inner annular bottom wall towards the rim, and with each of the two inner annular sidewalls including an inner side having a lip pressing against one of the two tire engagement portions of the rim; a grounding tire mounted around the inflatable tire, with the grounding tire being a hollow annular member which is U-shaped in radial cross section and which has an inwardly facing opening, with the grounding tire including an outer annular bottom wall surrounding the inner annular bottom wall of the inflatable tire and capable of in rolling contact with a ground, with the outer annular bottom wall having left and right sides, and with the grounding tire further including two outer annular sidewalls respectively extending radially inwards from the left and right sides of the outer annular bottom wall and respectively located beside the two inner annular sidewalls of the inflatable tire; and a safety unit sandwiched between the inflatable tire and the grounding tire to couple the inflatable tire and the grounding tire together, permitting synchronously rotation of the inflatable tire and the grounding tire. |
