Patent ID: 7497321

Claim:
A conveyor system in which a moving body is provided to be travelable along a processing line installed with a processing liquid tank, and a conveyed object held on the moving body is immersed into a processing liquid in the processing liquid tank and processed, wherein the moving body comprises: a suspended supporting apparatus for supporting the conveyed object; a raising and lowering device for raising and lowering the suspended supporting apparatus; and a posture adjustment apparatus for operating the suspended supporting apparatus and adjusting a posture of the conveyed object, the raising and lowering device comprising: a first support axle disposed on one of front and rear sides of the moving body in a travel direction thereof and extending orthogonally to the travel direction; a second support axle disposed on the other of the front and rear sides of the moving body in the travel direction thereof and extending in parallel to the first support axle, the second support axle being movable towards and away from the first support axle; a crank arm rotatably supported at a base end portion thereof by the second support axle and rotatably supporting the suspended supporting apparatus at a free end portion thereof; a swinging arm fixed at a base end portion thereof to the first support axle and coupled at a front end portion thereof to an intermediate position of the crank arm by means of a coupling axle; and an arm drive unit for causing the crank arm to rotate about the second support axle, the suspended supporting apparatus comprising a suspended section parallel link mechanism including an upper frame, a pair of suspended frames, and a linking frame, the upper frame being rotatably supported at a medium section thereof on the free end portion of the crank arm, the pair of suspended frames being rotatably suspended from both ends of the upper frame, the linking frame being rotatably linked between lower sections of the suspended frames and supporting the conveyed object, the support section of the upper frame and the linking sections between the upper frame and the suspended frames being configured to have a positional relationship to form a triangle thereamong, and the upper frame being formed to have an arch-like shape extending downward obliquely with an inclination on both sides from a vicinity of the support section of the crank arm.