Electronic balance
AssigneeShimadzu Corporation
InventorAtushi Iiduka
Life of this patent
Estimating the term…
Abstract
Protruding part of a mechanism body is connected to a base frame by screws, and other protruding part is connected to an auxiliary connecting metal fittings by the screws. A machining necessary for connecting is conducted on the protruding portions, the widths of which are wide. Therefore, a sufficiently long distance can be obtained by the protruding portions. As a result, the Roberval's parts 4, 5 are not affected by stress strain, which is caused in the process of connecting, even if a size of an electronic balance in a longitudinal direction is not extended. Accordingly, it is possible to realize the compact electronic balance of high performance in which an accurate measurement can be made even if a load is given to a balance pan being biased.
Claims15
An electronic balance comprising:
- a balance pan for putting an article thereon;
- a movable part fixed to the balance pan;
- and
- a Roberval's mechanism for moving the movable part in parallel in the vertical direction;
- wherein the movable part, Roberval's mechanism, and each connecting part of the moveable part and Roberval's mechanism are formed into an integral construction, said integral construction having a first end and a second end, a length extending in a longitudinal direction between said first end and said second end, and a width extending transverse to the longitudinal direction, at least one of the first and second ends extending beyond said Roberval's mechanism in the length direction;
- a lever mechanism for transmitting a displacement of the movable part to a load sensor;
- a display device for displaying a weight of the article detected by the load sensor;
- a base frame for fixing the integral construction;
- and,
- a protruding portion formed at said at least one of said first and second ends, said at least one of said first and second ends being one of a connecting portion, where the integral construction is fixed to the base frame and an attached portion, where the balance pan is secured to the integral construction, said protruding portion having a width dimension extending in the width direction, said protruding portion width dimension being larger than a width dimension of the Roberval's mechanism,
- wherein at least one of the balance pan and the base frame is connected to the integral construction of the protruding portion.
Dependencies are inferred from the claim text.