| 摘要 |
A lightweight pillar structure having high absorbing effect of impact energy is provided. A center pillar (12) made of a light alloy is formed of a pillar body (20) and a functional part mounting portion (22) integrally formed together. The functional part mounting portion (22) is a cylindrical hollow boss, and a slide rail (126) is mounted to a thread portion formed in an inner periphery of the cylindrical hollow boss. The slide rail (126) is formed so as not to project from an inner side face of a center pillar (12) of a passenger compartment inward of the passenger compartment. Ribs (30) as deformation control means are integrally formed on an upper portion (12D) of the center pillar (12). The ribs (30) control a deformation mode of the center pillar (12) against side impact. |
