| 摘要 |
A miniature switch which has reduced susceptibility to welding of contact elements due to high voltage arcing. The switch has parallel resilient spring like current carrying members each having a contact portion mounted adjacent an end thereof. A selectively actuatable switch plunger is adapted to bend the free end of one of the contact members about its fixed support so that the contact portion thereof contacts the contact portion of the other current carrying member, which in turn bends about its fixed support. Upon removal of the operating force of the plunger, the current carrying members spring back to their normal horizontal positions, breaking the electrical contact between the contact portions. The making and breaking actions are made in a slow manner so that the possibility of bouncing between contact elements and the consequent welding due to high voltage arcing, is greatly reduced. By virtue of the mode of actuation, the contact portions of the current carrying members are moved in different arcuate paths during the switching operation so as to provide a wiping action therebetween at the surfaces of contact, which further resist the formation of welds between the contact elements. Auxiliary resilient spring members also are provided adjacent to the current carrying members, so as to provide a force that constantly opposes proximate contact between the contact elements and prevents prolonged build up of welding action.
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