| 摘要 |
A double pole, double throw, lighted push button switch having a switch housing receiving a central support member. A light assembly is provided which can be either independently or dependently connected to an electrical circuit and is mounted on top of the support member. A switch blade assembly is connected to the circuit and mounted within the housing and is movable between a normal position and an unstable position whereby electricity is allowed to flow through a load in the circuit in one position and is allowed to flow through another load when in the other position. An actuator assembly is provided for moving the contact assembly from its normal position to its unstable position. The actuator assembly includes a depressable push button mounted for reciprocal movement, a pawl member, a rotatably mounted ratchet member, and a reciprocally mounted positioner member. The pawl member is associated with the push button for movement therewith. The ratchet member is adapted to be engaged by the pawl member so that the ratchet member rotates a given increment every time the push button is depressed. The ratchet member also includes a cam which rotates with the ratchet member. The positioner member is operably associated between the ratchet cam and the switch blade assembly for moving the switch blade assembly between the normal and unstable positions in response to an incremental rotation of the ratchet member. The pawl member is spring-biased by a means separate from the pawl member to return it to its initial position after every depression of the push button. In addition, double pole switching can be effected by mounting essentially the same elements as described above on the other side of the central support member. |
