Rotation maintaining device

摘要

A rotatable output shaft, a rotatable rotary plate member coupled with the output shaft, rotary weight members supported by the rotary plate member, a guide member fixed in motionless condition having a partially arc shape at a side where the rotary weight members rise, and rotation engagement members pivotally supported by the rotary place member are provided. Each of the rotary weight members includes a circular plate section, and a weight section fixed to the circular plate section to bias a position of the center of gravity of each rotary weight member from the axis of the circular plate section. Each of the rotary weight members is adapted to rotate in one direction when an outer circumference side surface of the circular plate section is driven by the outer circumference side surface of each rotation engagement member.

主权项

1. A rotation maintaining device comprising:
a rotatable output shaft pivotally supported and provided with an axis running along a horizontal direction that is vertical to a direction of force of gravity; a rotatable rotary plate member concentrically coupled with said output shaft; a plurality of rotary weight members pivotally supported by said rotary plate member at positions near a peripheral edge of said rotary plate member, respectively, so as to rotate around pivoted axes in only one direction; a guide member fixed in motionless condition to position coaxial with said output shaft, and provided with a peripheral side surface having a partially arc shape, said peripheral side surface being positioned at a side where said rotary weight members ride when said rotary plate member rotates; and a plurality of rotation engagement members pivotally supported by said rotary plate member so as to rotate around pivoted axes, when outer circumference side surfaces of said rotation engagement members engage with and are guided by the partially arc shaped peripheral side surface of said guide member, each of said rotary weight members including a circular plate section having a rotational axis coaxial with the pivoted axis of each rotary weight member, and a weight section fixed to said circular plate section to bias a position of the center of gravity of each rotary weight member from the axis of said circular plate section, each of said rotary weight members being adapted to rotate in said one direction when an outer circumference side surface of said circular plate section is engaged with and driven by the outer circumference side surface of each rotation engagement member.