| 摘要 |
PURPOSE:To facilitate the re-ignition operation by a constitution wherein a push button is returned to its start location when the depressing operation of the push button is released by the starting of the actuation of an igniter. CONSTITUTION:A locking device 10 to stop the push button 8 of a burner at the intermediate location C is equipped with a cam mechanism 18, which detects the depressed location of the push button 8 so as to actuate the locking action only when the push button 8 is depressed further beyond the predetermined ignition location D near the final location B. If the push button 8 is not depressed from the start location A of the push button 8 to the ignition location D or the location in order for an engaging piece 21 to travel beyond the step 19d at the end of a groove part 19a, the engaging piece 21 comes back to a point (a) by reversing its motion in the first groove 19a. Only when the push button 8 is depressed beyond the ignition location D, the locking device 10 is put into actuation. Because an igniter 12 is started its actuation before the ignition location D is reached, when the depressing operation of the push button 8 is released due to the start of the actuation of the igniter 12, the push button 8 returns to the start location A without being stopped at the intermediate location C. |
