BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagonal view of a key switch embodying this invention.
FIG. 2 is a vertical sectional view of the operating part of the key switch of FIG. 1.
FIG. 3 is a diagonal view of the operating part of FIG. 2 with portions of the head cover and base removed to show the operating unit.
FIG. 4 is a side view of the operating part of FIG. 2 with a portion of the head cover removed.
FIG. 5 is a diagonal view of the driver cam of the operating unit as seen from the left-hand side.
FIG. 6 is a diagonal view of the driver cam of the operating unit as seen from the right-hand side.
FIG. 7 is a diagonal view of the lock cam on the left-hand side of the operating unit as seen from the left-hand side.
FIG. 8 is a diagonal view of the lock cam of FIG. 7 as seen from the right-hand side.
FIG. 9 is a diagonal view of the lock cam on the right-hand side of the operating unit as seen from the right-hand side.
FIG. 10 is a diagonal view of the lock cam of FIG. 9 as seen from the left-hand side.
FIG. 11 is a drawing for explaining the shape of the first and second engaging protrusions on the driver and lock cams.
FIG. 12 is a sectional view of the connecting part of the cam shaft of the lock cam on the left-hand side and the right-hand side.
FIG. 13 is a drawing for showing the engaged condition of the first and second engaging protrusions.
FIG. 14 is a drawing for showing the disengaged condition of the first and second engaging protrusions.
FIG. 15 is a diagonal view of the operating key.
FIG. 16 is a diagonal view of another operating part of the key switch of this invention, characterized as using a spiral spring as means for holding the lock cams, shown with portions of the head cover and the base member removed.
FIG. 17 is a side view of the operating unit of a prior art key switch with a portion of its head cover removed.
FIG. 18 is a front view of the operating unit of FIG. 17.
FIG. 19 is a diagonal view of the operating unit of another prior art key switch.
FIG. 20 is a drawing for showing the locked condition of the driver cam of the operating unit of FIG. 17.
FIG. 21 is a drawing for showing the unlocked condition of the drive cam of the operating unit of FIG. 17.