| 摘要 |
PROBLEM TO BE SOLVED: To improve the rigidity of the lower edge portion and create a collision impact load absorbing mechanism, by providing a reinforcing hollow tube protrusion extending in the vehicle longitudinal direction and facing the vehicle frame side sill, on the inside surface of a synthetic resin door outer panel body formed by gas-assist injection molding. SOLUTION: A vehicle door outer panel P, formed by gas-assist injection molding, comprises non-crystalline synthetic resin, and an Al alloy door frame F is located on the inside surface thereof. Then, on the inside lower portion of a panel body 1, a reinforcing hollow tube protrusion 8 is provided in the forming process using the gas-assist method, extending in the vehicle longitudinal direction facing a side sill 9 of the Al alloy vehicle body frame. The rigidity of the lower edge portion of the door outer panel P is increased by the reinforcing hollow tube protrusion 8. In addition, because the hollow tube protrusion 8 is facing the side sill 9, when collision impact comes from the lateral direction of the vehicle body to the lower edge portion, collision impact load is transmitted to the entire body frame and effectively absorbed.
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