| 摘要 |
PURPOSE: An automatic air injection system is provided to prevent damage due to an impact and to enable simple manufacture. CONSTITUTION: An automatic air injection system comprises a main body(10), an operating pin, a stroke(50), a spring, a cover(20), a sleeve(80), and a lever(30). A nut(11) is installed on the front side of the main body a spiral and an operation hole are formed on the lower outer side of the main body. A plurality of guide projections for preventing the rotation of the sleeve are formed in the operation hole. The operating pin is inserted in the main body and passes through a cartridge. The operating pin is composed of a pin and a body on which an O-ring is installed on both sides and a coupling projection is formed on the end. The stroke operates the operating pin. The spring elastically supports the stroke and the operating pin. The sleeve is inserted into the main body and supports the stroke. The lever is to manually operate the operating pin.
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