Impact absorbing member and bumper device

摘要

An impact absorbing member is formed by bending one sheet of a metal plate material and then joining adjacent end parts thereof. The impact absorbing member includes the following integrally-connected portions: a fixing plate, an impact absorbing part having two first side wall plates and two second side wall plates, two flange plates, and two bridge plates. The impact absorbing part overall has an approximate square or rectangular tube shape after being bent. Joining parts are provided at each opposing end parts of the first and second side wall plates. The adjacent end parts of the first and second side wall plates overlap and are joined. The end parts of the two flange plates are also joined to the end parts of the two bridge plates.

主权项

1. An impact absorbing member formed entirely from one bent sheet of a metal plate material, comprising:
a fixing plate having an approximate square or rectangular shape for fixing to a reinforcement of a vehicle bumper; an impact absorbing part comprising two first side wall plates each having an approximate square or rectangular shape, both first side wall plates extending towards one side substantially perpendicularly from two opposite sides of the fixing plate, and two second side wall plates each having an approximate square or rectangular shape, both second side wall plates extending towards said one side substantially perpendicularly from a remaining two opposite sides of the fixing plate; two flange plates for fixing to a frame of a vehicle body, the two flange plates respectively extending substantially perpendicularly outwardly from a side of each of the two first side wall plates that is opposite of the fixing plate; and two bridge plates that respectively bridge first and second gaps between opposing end parts of the two flange plates, the two bridge plates respectively extending substantially perpendicularly outwardly from a side of each of the two second side wall plates that is opposite of the fixing plate, wherein the impact absorbing part overall has an approximate square or rectangular tube shape, and further comprises joining parts that join opposite edge parts of the two first side wall plates with respective overlapping, opposing edge parts of the two second side wall plates that are adjacent to the opposite edge parts of the two first side wall plates, and the opposing end parts of the two flange plates are each respectively joined to adjacent end parts of the two bridge plates.