| abstract |
A resin shock absorbing member having a simple structure and stable shock absorbing performance is provided. A resin impact absorbing member made of a fiber reinforced resin material containing a reinforcing fiber and a thermoplastic resin, and having a shock absorbing portion having a hollow structure composed of an outer cylindrical portion and a hollow portion, the reinforcing fiber Has an average fiber length of 1 to 100 mm, the thermoplastic resin has a breaking elongation of 10% or more, the fiber reinforced resin material has a compressive elastic modulus of 10 GPa or more, and a compressive strength of 150 to 500 MPa. The shock absorbing portion has a maximum value of a ratio L1 / t1 between the distance L1 from the center of gravity in the cross-sectional shape in the direction orthogonal to the shock absorbing direction to the outer cylindrical portion in the same cross section and the thickness t1 of the outer cylindrical portion. Provided is a resin-made shock absorbing member characterized by being 40 or less. [Selection] Figure 1 |