RESIN-MADE IMPACT ABSORBING MEMBER

• Main Authors: OKA KOHEI, ONOE SHUHEI, YAMAJI TADASHI
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2015
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; MOTOR VEHICLES; PERFORMING OPERATIONS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WEAPONS

PROBLEM TO BE SOLVED: To provide a resin-made impact absorbing member which is simple in structure and has stable impact absorption performance.SOLUTION: There is provided a resin-made impact absorbing member which is composed of a fiber-reinforced resin material having a reinforced fiber and a thermal plastic resin, and has a hollow-structure impact absorbing part composed of an outer cylinder part and a hollow part. An average fiber length of the reinforced fiber is 1 to 100 mm, the rupture elongation of the thermal plastic resin is not lower than 10%, a compression elasticity rate of the fiber-reinforced resin material is not lower than 10 GPa, and compression strength is 150 to 500 MPa, and in the impact absorbing part, a maximum value of a ratio L1/t1 of a distance L1 from a gravity center position in a cross shape in a direction orthogonal to an impact absorbing direction up to the outer cylinder part at the same cross section and a thickness t1 of the outer cylinder part is not larger than 40. 【課題】簡易な構造で安定した衝撃吸収性能を持つ樹脂製衝撃吸収部材を提供する。【解決手段】強化繊維と熱可塑性樹脂とを含有する繊維強化樹脂材料からなり、外筒部と中空部とからなる中空構造の衝撃吸収部を有する樹脂製衝撃吸収部材であって、前記強化繊維は平均繊維長が１〜１００ｍｍであり、前記熱可塑性樹脂は破壊伸度が１０％以上であり、前記繊維強化樹脂材料は圧縮弾性率が１０ＧＰａ以上であり、かつ圧縮強度が１５０〜５００ＭＰａであり、前記衝撃吸収部は、衝撃吸収方向に直交する方向の断面形状における重心位置から同一断面における外筒部までの距離Ｌ１と、該外筒部の厚みｔ１との比Ｌ１／ｔ１の最大値が４０以下であることを特徴とする樹脂製衝撃吸収部材を提供する。【選択図】図１