Shinko Denshi Company Limited

Kazufumi Naito

Naoya Shinozaki

Hiroshi Suzawa

Shinichiro Ishida

A platform scale is provided including a plurality of component force damping devices. The platform scale for weighing an object by supporting a support member that supports the object by a plurality of load detection units includes at least four component force damping devices, each comprising a plurality of needle bearings disposed in parallel and a pair of opposed plates for sandwiching the the needle bearings, so that the pair of plates make a relative movement in a direction of the arrangement of the needle bearings. The four component force damping devices are in contact with the support member at four locations that form a rectangle. Directions of the relative movement of any two component force damping devices located at the same side of the rectangle are different, while directions of the relative movement of any two component force damping devices at diagonal locations of the rectangle are identical.

Component force damping device and platform scale using same

(Problem) To provide a high precision platform scale (Means to Solve the Problem) A platform scale for weighing an object to be weighed by supporting it by a plurality of load detection sections, wherein the load detection section comprises a load sensorhaving a block bodyfor transmitting an applied load to a tuning fork vibratorcoupled to the block bodyby reducing the load, a circuit board having fabricated thereon circuitry for converting a signal from the tuning fork vibrator into a digital signal and a sensor casefor accommodating the load sensor and the circuit board. The sensor caseis made by casting stainless material by a lost wax process and is directly coupled to parallel base framesfor maintaining the distance between the base frames. The sensor case has sufficient mechanical strength and also acts as a structural member for the base frames, thereby reducing the number of components and the height of a weighing table.

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Tokyo, Japan

Kazufumi Naito