| 摘要 |
A switching mechanism has disc cams arranged on a shaft for actuating switches positioned beside the shaft. The disc cams are secured in a particular angular position in conjunction with an annular plastically deformable washer which has an unround aperture seated on a corresponding unround portion of the shaft and thereby locked to the shaft. The disc cam and the element are locked together by bending a region of the washer into a recess on the disc cam.
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