| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a highly reliable contact mechanism unit that requires no large driving force to disconnect the contact, consumes less power and permits very accurate control.SOLUTION: A contact mechanism unit: engages a driving projection 43 disposed at one end of a slide-shifting card 40 with a free end of a movable contact piece 60; slide-shifts the card 40 to rotate the movable contact piece 60; and brings a movable contact 56, provided on the movable contact piece 60, into contact with or away from a fixed contact 52. In particular, the contact mechanism unit is provided with the driving projection 43 disposed at the one end of the card 40 and a returning resilient tongue 67c disposed toward the free end of the movable contact piece 60 to be able to come into contact with the driving projection 43, and the driving projection 43 and the returning resilient tongue 67c engage with each other in a state in which the movable contact 56 and the fixed contact 52 are in contact with each other.</p> |
