Patent ID: 6444934
Filing Date: 2002-09-03
Classification: H01H

Abstract:
A driving force storing device for a switch operating mechanism, comprising:a joint device having a first joint portion on which a first opposing surface is formed, a second joint portion on which a second opposing surface opposing said first opposing surface is formed, and a coupling portion coupling said first joint portion with said second joint portion so that a distance between said first and second opposing surfaces is changeable; a driving shaft portion mechanically connected to an operating portion of the switch operating mechanism, said driving shaft portion being rotatable between a stored position and a released position; a first torsion bar connected between said first joint portion and said driving shaft portion, for storing a driving force by increasing the degree of twisting by rotating said driving shaft portion from said released position to said stored position, and for rotating said driving shaft portion from said stored position to said released position at the time of releasing; a fixed member fixed to a fixed part of the switch operating mechanism; a second torsion bar connected between said second joint portion and said fixed member; and an initial torque adjusting mechanism for adjusting an initial torque applied to said driving shaft portion positioned at said released position by adjusting a distance between said first and second opposing surfaces; wherein a torque is applied to said joint device by said first and second torsion bars in a direction where said first and second opposing surfaces are separated from each other and said first and second joint portions are pushed toward said coupling portion.