Balancer mechanism for rotating shaft
OwnerHiroshi Miyazawa, Ichiro Kitaurainventors
Life of this patent
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Abstract
A balancer mechanism is provided that applies a balancing rotary moment to a rotary shaft that at least partly cancels rotary moment applied to the rotary shaft so as to reduce the rotary moment in a simple and reliable manner. A rotary shaft balancer mechanism (8) comprises a gas spring (20), a first coupler (40) that rotatably couples the bottom end of the gas spring (20) to a stationary member (10) on a shaft supporting member (5), and a second coupler (45) that rotatably couples the bottom end of the gas spring (20) to a rotary member (15) fixed to the left end of a rotary shaft (3) at a position offset to the axis (A) of the rotary shaft (3).
Claims5
A rotary shaft balancer mechanism for reducing rotary moment acting on a rotary shaft rotatably supported by a shaft supporting member from one or more members supported by the rotary shaft, comprising:
- a gas spring for applying to the rotary shaft a balancing rotary moment that at least partly cancels the rotary moment;
- a first coupler that rotatably couples one end of the gas spring to a stationary member on the shaft supporting member;
- and
- a second coupler that rotatably couples the other end of the gas spring either to an end of the rotary shaft or to a rotary member fixed to the end of the rotary shaft at a position offset to an axis of the rotary shaft.
A rotary shaft balancer mechanism for reducing rotary moment acting on a rotary shaft rotatably supported by a shaft supporting member from one or more members supported by the rotary shaft, comprising:
- a gas spring for applying a balancing rotary moment to the rotary shaft that at least partly cancels the rotary moment;
- a coupling arm that has the gas spring and is expandable and contractable via the gas spring;
- a first coupler that rotatably couples one end of the coupling arm to a stationary member on the shaft supporting member;
- and
- a second coupler that rotatably couples the other end of the coupling arm either to an end of the rotary shaft or to a rotary member fixed to the end of the rotary shaft at a position offset to the axis of the rotary shaft.
Dependencies are inferred from the claim text.