Electrical switches
AssigneeUnimax Switch Limited
InventorMichael I. Henville
Life of this patent
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Abstract
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.
Claims7
An electrical switch comprising a casing assembly which houses a switching mechanism of the switch, an actuating button which projects from the casing assembly, and an actuating lever which is pivotally mounted on mounting means secured to the casing assembly, for pivotal movement of the lever to depress the button to actuate the switch, the mounting means being in the form of a mounting block comprising an upstanding post and side portions positioned on opposite sides of the post and the post presenting a first bearing face which is oppositely-facing to second bearing faces presented by the side portions, the post projecting through a slot in the lever and comprising laterally projecting head portions which overly the lever to retain the lever on the mounting block for pivotal movements against the bearing faces.
Dependencies are inferred from the claim text.