| 摘要 |
<p>A miniature switching unit including two fixed contact pieces (15, 16) arranged one above the other and fixed to terminals (6, 8), respectively, and a movable contact piece. Each of the fixed contact pieces (15, 16) is made of springy wire members (15a, 16a) and includes parallel portions (15b, 16b) having equal inner distances, respectively. The movable contact piece (17) in the form of a rod having a thickness slightly larger than the inner distances of the parallel portions (15b, 16b) of the fixed contact pieces (15, 16) and includes an intermediate insulator (17a), an upper conductor (17b) axially, concentrically and integrally connected to the upper end of the intermediate insulator (17a) and a forward conductor (17c) axially, concentrically and integrally connected to the lower end of the intermediate insulator (17a). The movable contact piece (17) is held in a housing so as to be positioned in and contacting the parallel portions (15b, 16b) of the first and second fixed contact pieces (15, 16) and movable in a manner that the intermediate insulator (17a) moves across any one of the first and second fixed contact pieces (15, 16), which are arranged one above the other. <IMAGE></p> |
