| 摘要 |
A suspension switch, for controlling electric motors, has plural switching positions selected by actuation of a switch slider which rotates a common carrier shaft carrying several cam disks of different cam shapes and fixed to the common shaft. Respective spring biased rollers cooperate with each cam disk and effect reciprocation of respective contact bridges controlling interconnection of respective pairs of fixed contacts. Each cam disk has a cam track formed with contact making and contact breaking surfaces engageable by the associated roller to actuate the respective contact bridges, and roller abutting surfaces, of differing slopes, interconnect the contact making and breaking surfaces. |
