| 摘要 |
PURPOSE: A cap for injecting air to a tire is provided to inject air to the tire by an air injector without mounting or removing the cap with the opening unit installed in the cap, and to measure the pneumatic pressure of the tire by moving up and down the measuring plate according to pneumatic pressure of the tire and the elastic force of the spring. CONSTITUTION: An air injection cap of a tire is combined with the upper part of an injection part(28) to inject air to the tire. The cap is composed of a body(21) thread-connected to the injection part, an opening hole(22) formed in the upper part of the body, and an opening and closing unit(20) installed in the body to open and close the opening hole. The opening and closing unit is composed of an opening valve(23) opening and closing the opening hole, a spring(24) combined with the lower part of the opening valve, and a measuring unit combined with the other end of the spring to display pneumatic pressure out of the body.
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