| 摘要 |
A pull-push switch with a variable resistor in which on one side of a cap-shaped resistor cover is installed a resistor baseplate or an insulating baseplate mounted with a resistor thereon and on the other side thereof is installed an L-shaped metal plate, a bearing mounted on said resistor baseplate supporting a rotary shaft which is movable through said bearing, one end of said rotary shaft being projected through one side of said resistor cover and through a flat portion of said metal plate adjacent to said resistor cover, a switch being installed on the underside of the other portion of said metal plate which is in turn situated under said rotary shaft, an almost channel-shaped synthetic resin switch driver unit being placed on said other portion of said metal plate, a protrusion for operating said switch being fitted into a hole cut in the trunk of said switch driver unit, a couple of U-shaped music wire springs being bridged between said end of said rotary shaft and pockets cut in the inside surfaces of the legs of said switch driver unit opposite to each other.
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