| 摘要 |
PURPOSE: To conduct locking automatically at the time of plug-in connection, by forming, into a hollow and cylindrical shape, the interior of an extention part projecting from a lower part or a base of a switch so as to be fitted with a radial cutout adjacent to a clamp spring. CONSTITUTION: At a lower part of a switch 1 having a connection plug for use with a plug-in connection device, a cylindrical extention part 5, whose interior is hollow and which is fitted with a lateral cutout 6, projects from a base 4 on a longitudinal axis line 2a of the plug-in connection device. A rotary or switching shaft 7 of the switch 1, reaching the interior of the extention part 5, has a groove or a lateral recess 8 in a fixed position and this recess is brought in line with the cutout 6 of the extention part 5 by rotation of the switch 1 or rotation of the shaft 7. The switch base 4 is connected to a clamp spring 9 fitted with a lateral cramping projection 10 projecting substantially parallel to the longitudinal axis line 2a, the projection 10 having a clamp surface 11 and an outside inclined slide surface 12, the clamp projection 10 slides on this slide surface 12 along a clamp protrusion part 13 for plug-in connection, and the protrusion part 13 protrudes from a housing side wall 14 of the connection plug 2 into a cutout 15 for use with the extention part 5. |
