| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy absorbing member capable of preventing increase of production cost by a new die design or addition of plural processes and being manufactured at a low cost without reducing energy absorbing performance.SOLUTION: A cylindrical inner cylinder member 2 is inserted into a cylindrical outer cylinder member 1 made of aluminum alloy, and in this state the outer cylinder member 1 and the inner cylinder 2 are molded by being electromagnetically expanded. Accordingly, the outer cylinder member and the inner cylinder member are adhered with each other at a whole area of a contact surface or a part of the contact area. The energy absorbing member is compressedly deformed in an axial direction to absorb impact energy when impact load is applied in the axial direction. |
