| 摘要 |
PROBLEM TO BE SOLVED: To prevent breakage of a fulcrum by restraining rolling of a lever and reducing measurement noise. SOLUTION: This electronic force balance has a first movable member 32b having a fulcrum 34A bonded in a space up to a fixed part 12 of a Roverval mechanism 2, one end side of which is displaced for a designated amount according to the movement of one end side interlocking with the movement of a moving part 14 of the R mechanism 2, and a second movable member 32c having a fulcrum 34B bonded in a space up to the fixed part 12, which is displaced for a designated amount interlocking with the displacement of the other end side of the first movable member 32b. A weight member 42 for keeping the balance in the equilibrium condition of the second movable member is fitted to the first movable member 32b. Thus, the lateral vibration generated in the second movable member 32c can be damped and restrained by the weight member 42, so that the measurement noise can be reduced so as to prevent breakage of the fulcrums 34A, 34B.
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