Switching device
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorHirofumi Hayashi
Life of this patent
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Abstract
A rod (40) is pivotally provided in a lever (28). The rod (40) is divided into a small-diameter lower rod (37) and a large-diameter upper rod (38). When a knob (45) is pivotally moved, the lower rod (37) and the upper rod (38) are moved in an integrated fashion. A movable contact (31) is slid by means of movement of a pusher (57) of the lower rod (37). In this case, the rigidity of the upper rod (38) is improved, and hence the upper rod (38) becomes less susceptible to deflection induced by the load of the spring (53). Accordingly, inclination of the knob (45) toward the lever (28) is prevented, and hence a clearance between the lever (28) and the knob (45) can be maintained constant by means of a single set consisting of a spring (53) and a moderation ball (54).
Claims5
A switching device comprising:
- a cylindrical rod case opened at opposite ends thereof;
- a rod rotatably provided in the rod case, the rod including,
- a first rod including a control portion for actuating a movable contact, and
- a second rod including a knob for actuating the rod and having a diameter larger than a diameter of the first rod, wherein the first and second rods are engaged with each other within the rod case;
- a moderation surface including a plurality of indentations and provided in the rod case;
- and
- a moderation member and a spring which are provided in the second rod, wherein the moderation member is selectively engaged with any one of the plurality of indentations on the moderation surface under force of a spring according to a pivotal movement of the knob.
Dependencies are inferred from the claim text.