| 摘要 |
PURPOSE: A gas time valve is provided to minimize the impact to a middle valve during a mechanical controlling process for the middle valve. CONSTITUTION: A gas time valve comprises a case, a timer(2), a driving part(3), a valve cap(4), and a ratchet gear(5). The timer is composed of a main body, a timer drive gear(22), a gear shaft, and an elastic member. The driving part locates to be contiguous to the timer and contacts with the control lever hole. The valve cap is composed of a main body, a middle valve cap, a stopper, a shaft, and a spring. The middle valve cap is located in the inner side of the main body. The stopper controls the operation of the middle valve cap. The shaft combines the middle valve cap and main body. The spring is combined with the middle valve cap.
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