| 主权项 |
1. An improved puncture-proof structure for tires, the improved puncture-proof structure comprising:
two C-shaped holding pieces each having a C-shaped body formed with plural through holes and notches; a C-shaped lining piece having a C-shaped body formed with plural through holes; a fine tuning member having a lengthwise body formed with plural receiving holes and a propping plate extended from an upper edge of the lengthwise body; an adjusting member being a lengthwise piece that has one end formed with one receiving hole and an opposite end formed with plural indentations; a pressing shaft being an axle configured to be received in the through hole of the combining block, having two ends thereof formed with threaded holes, and having a through hole running radially therethrough; a pressing bolt being an axle to pass through the through hole provided on the combining block, having two ends thereof formed with threaded holes, and having a threaded retaining hole running radially therethrough; a pressing screw bolt being provided with plural positioning holes; a combining block being a hollow member that has two lateral sides thereof provided with through holes and with a top thereof formed as an engaging valley, the combining block having two lengthwise ends thereof diagonally formed with projecting portions, and having engaging ribs each formed above one said through hole at the side of the combining block; and a reinforcing plate being a lengthwise piece provided with separated locking holes, wherein the reinforcing plate is able to be made with different intervals between the locking holes for option in practical use; wherein, the C-shaped lining piece is configured to be inserted into the hollow combining block, so that the through holes of the C-shaped lining piece are aligned with the through holes of the combining blocks, respectively, and the two C-shaped holding piece each have the through holes thereof aligned with the through holes at the two sides of the combining blocks, so that screw bolts passing through the through holes of the C-shaped lining piece, the C-shaped holding pieces and the combining blocks hold the C-shaped lining piece, the C-shaped holding pieces and the combining blocks together to form a C-shaped spare tire body, in which the engaging ribs at the two sides of the combining blocks are fittingly received by the notches of the C-shaped lining piece; the engaging valleys of the combining blocks of the spare tire body, being engaged with the hooked portions of the tire, the through holes of the combining blocks at two ends of the spare tire body and the through holes of the C-shaped holding piece and of the C-shaped lining piece being aligned with the receiving holes of the fine tuning member so as to allow screws to pass these holes and hold the combining blocks, the C-shaped holding piece, the C-shaped lining piece and the fine tuning member together, the fine tuning members connecting two ends of the spare tire body having the receiving holes thereof each aligned with a threaded hole of the pressing shaft fixedly held by the through hole of one of the combining block or the threaded hole of the pressing bolt fixedly held by the through hole of the other of the combining block, the through hole of the pressing shaft receiving the pressing screw bolt, and the threaded retaining hole of the pressing bolt being configured to screwedly receive the pressing screw bolt passing through the through hole of the pressing shaft, so that by screwing the pressing screw bolt in or out with respect to the threaded retaining hole, the spare tire body is finely tuned to fittingly engaged with the hooked portions of the tire, the adjusting member, which, together with the two reinforcing plates, straddles on the fine tuning members such that the receiving hole and the indentations of the adjusting member and the locking holes of the reinforcing plate are aligned with the receiving holes of the fine tuning members, which allowing screw bolts to be inserted into the threaded holes of the pressing shaft and the pressing bolt to hold the adjusting member, the two reinforcing plates and the fine tuning member together, so that one of the screw bolts props against the positioning hole of the pressing screw bolt to prevent the pressing screw bolt from loosening and the propping plates of the fine tuning member props against the adjusting member to prevent the adjusting member from loosening; and the plural receiving holes of the fine tuning member and the plural indentations of the adjusting member providing different combined distances for optional use in order to make the spare tire body fittingly engaged with the hooked portion of the tire. |
