To provide a manufacturing method of a vehicle body having a vehicular collision energy absorption component in which the absorption effect of collision energy is improved when the collision load is input and the axial collapse occurs, and in which the production cost is not increased largely.SOLUTION: A manufacturing method of a vehicle body having a vehicular collision energy absorption component 1 comprises: a component manufacturing step S1 of manufacturing the vehicular collision energy absorption component 1; and a vehicle body assembling step S3 of assembling a vehicle body by attaching the vehicular collision energy absorption component 1. The component manufacturing step S1 comprises: a pre-coating component manufacturing step S1-1 of manufacturing a pre-coating component 2 having a cylindrical member 3 formed by using a hat cross section member and a coating film formation member 5 made of a material with the lower strength than that of the cylindrical member 3 and arranged with a gap 11 equal to or greater than 0.2 mm and equal to or less than 3 mm on the inner surface of a portion including a corner part 7c in the cylindrical member 3; and a coating film formation step S1-2 of forming a coating film 13 with the electrophoretic coating in the gap 11.SELECTED DRAWING: Figure 1
【課題】衝突荷重が入力して軸圧壊する際に、衝突エネルギーの吸収効果が向上し、かつ、生産コストが大きく上昇することのない自動車用衝突エネルギー吸収部品を有する車体の製造方法を提供する。【解決手段】本発明に係る自動車用衝突エネルギー吸収部品1を有する車体の製造方法は、自動車用衝突エネルギー吸収部品1を製造する部品製造工程S1と、自動車用衝突エネルギー吸収部品1を取り付けて車体を組み立てる車体組立工程S3とを備え、部品製造工程S1は、ハット断面部材を用いて形成された筒状部材3と、筒状部材3におけるコーナー部7cを含む部分の内面に0.2mm以上3mm以下の隙間11を空けて配設される筒状部材3より強度の低い材質からなる塗膜形成部材5とを有する塗装前部品2を製造する塗装前部品製造工程S1−1と、隙間11に電着塗装によって塗膜13を形成する塗膜形成工程S1−2とを備えたことを特徴とする。【選択図】 図1
MANUFACTURING METHOD OF VEHICLE BODY HAVING VEHICULAR COLLISION ENERGY ABSORPTION COMPONENT
自動車用衝突エネルギー吸収部品を有する車体の製造方法
2021-06-03
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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