| 摘要 |
Provided is a shock absorber for a vehicle, which, when it is crushed, can break and open a part of the wall thereof earlier than the time of the break of an explosion inducing section, to thereby exclude the effect of the air being present inside a hollow portion and exhibit stable shock-absorbing capability and also maintain a satisfactory shock-absorbing capability over a wide range of temperature from a high temperature to a low temperature independently of the temperature of the open air. A shock absorber (1) is a hollow structure integrally molded through blow molding. The shock absorber (1) has at least one explosion inducing section (12). The explosion inducing section (12) comprises a protruded ridge (13) in a notch form formed on the surface of the wall of the shock absorber (1). The shock absorber (1) comprises a thermoplastic polymer alloy of a polyolefin type resin and an amorphous resin.
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