Hopper attachment structure and weighing device comprising same

A hopper attachment structure, wherein

• the hopper attachment structure is configured to allow the hopper to be removably attached to a driving unit, and
• the hopper comprises:
• an outlet in a body thereof;
• and
• a gate driven to open and close by the driving unit,
• the outlet of the hopper being allowed to open and close with the gate,
• the driving unit comprising an boss portion and a support pin,
• the hopper further comprising an attachment bracket extending from the body, the attachment bracket comprising;
• at a distal end thereof, a hook portion engageable with the boss portion, and
• at a portion thereof behind and contiguous with the hook portion, a contact portion configured to contact the support pin,
• the contact portion having an angled part configured to contact the support pin so that the support pin supports the hook portion in two directions, one of the directions being an upper direction and the other being an inner direction toward the driving unit, so that the hopper is laterally positioned in a predetermined direction and angle in which forward, backward and downward movements are prevented,
• the hopper being attachable to the driving unit by having the hook portion of the attachment bracket engaged with the boss portion of the driving unit and by further having the contact portion of the attachment bracket supportably contact the support pin of the driving unit, wherein:
• the boss portion is formed on each of lateral surfaces on both sides of the driving unit,
• the support pin is formed on each of the lateral surfaces,
• a pair of the attachment brackets facing each other are extended from the body,
• the boss portion pivotally and rotatably supports a driving arm used to open and close the gate,
• the boss portion that pivotally and rotatably supports the driving arm is screwed into the one of the lateral surfaces of the driving unit,
• the support pins on the lateral surfaces of the driving unit are protruding more toward the body than the engaging protrusions, and
• the support pins contact the contact portions of the attachment brackets to support the attachment brackets from underneath.