| 摘要 |
PURPOSE:To make the stroke necessary for the actuation of a door switch constant at all times without being influenced by the position of the tip of a door arm when a door is open by a structure wherein the door switch to control the power source of the main circuit of a heating apparatus is put into actuation by the can of a door switch lever rotating in response to the opening and closing of a door. CONSTITUTION:A door switch lever 12, the cam 12a of which actuates a door switch 13 to control a main circuit, is pivotally fixed to a hinge block 11. The tip of a door arm 5 passes through a U-shaped groove provided at the tip of the door switch lever. The projection 5a of the door arm 5 and the catching eye 6a are located so as to hold the door switch lever 12 therebetween in order to control the movement of the door switch lever 12 and at the same time to shift the door switch lever in response to the movement of a door when the door is opened and closed. Thus, the cam 12a brings the door switch into actuation. |
