Overload prevention mechanism

An overload prevention mechanism comprising:

• a load receiving part comprising
• a support part supporting a weighing dish,
• a side wall continuously provided downward from the support part, and
• a flange continuously provided sideways from a vicinity of a lower end of the side wall, and having three or more ribs on an upper surface thereof;
• a pedestal located below the load receiving part and having a fastening hole at a peripheral edge thereof;
• an elastic body in contact with the load receiving part at one end and with the pedestal at the other end, and biasing the load receiving part and the pedestal in a direction to be apart from each other;
• and
• a connection member having grooves engaging with the ribs on a lower surface thereof, having a through hole in contact with a base of the side wall in the center thereof and having a fastening hole at a building portion,
• the three or more ribs being disposed so as to restrict inclination and rattling of the load receiving part due to a load applied to the load receiving part, and
• the connection member and the pedestal being fixed to each other by fastening between the fastening hole of the connection member and the fastening hole of the pedestal.