1. Field of the Invention
The present invention relates to a switch such for example as a telephone hook switch or a built-in switch structurally associated with an A.C. power supply receptacle or socket.
2. Prior Art
Heretofore, so-called leaf switches have been used as telephone hook switches and power-supply receptacle switches. The leaf switch comprises at least a pair of resilient leaf contacts secured at one end to a holder, the other end of one of the leaf contacts being reciprocably actuatable by a driver into and out of contact with the other leaf contacts for switching operation. With such a leaf switch, the operation of the driver depends largely on the stroke through which the driver is moved, and hence the force with which the leaf contacts are held in contact with each other varies to a relatively large extent in response to a slight variation in the stroke of travel of the driver. The conventional switch is also disadvantageous in that the adjustment of switching timing is difficult to achieve, and reliability is poor as the contacts tend to deteriorate. Another difficulty with the prior arrangement is that efforts to avoid such contact deterioration normally contemplate using a better material for the contact and electroplating the leaf contacts with silver, both of which are expensive.