| 摘要 |
Microswitches customarily have a casing assembly housing the switching mechanism, and an actuating button projecting from the casing. For some applications it is desirable to provide a pivotally mounted lever for depressing the button. Such lever has usually been secured in assembly of the casing. To enable levers to be added as required to stocks of assembled switches, the lever 4 is pivotally mounted on a mounting block 5 which can be snap-fitted to the assembled casing 2 of a switch as required. The block comprises a spigot 6 which is received in a socket in the casing. Oppositely-facing knife-edges 10, 12 of the lever engage bearing faces 9, 11 of the block. A key-hole slot 13 allows the lever to be passed over a post 8 of the block, projecting head portions 14 of the post 8 retaining the lever after assembly with the block.
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