The invention relates to a B column on a vehicle and a manufacturing method. The B column comprises a B column main body, wherein the top of the B column main body is provided with an upper fixing part fixed together with a vehicle roof; the bottom of the B column main body is provided with a lower fixing part fixed together with a threshold. The B column is characterized in that the upper part of the B column main body is a first thickness region; the lower part of the B column main body is a second thickness region; the middle of the B column main body is a third thickness region; transition regions are formed among the first thickness region, the second thickness region and the third thickness region; the thicknesses of the first thickness region and the second thickness region are 1.2 millimeters; the thickness of the third thickness region is 2 millimeters; in the transition regions, the thickness of the third thickness region gradually decreases to the thicknesses of the first thickness region and the second thickness region; a reinforcing pipe is arranged in the third thickness region; the reinforcing pipe is a hollow pipe, and is made through a hydraulic forming process. By adopting the hydraulically-formed reinforcing pipe, the section design of the reinforcing pipe can be flexibly changed according to the shape of the B column, so that each section is loaded more uniformly.
B column on vehicle and manufacturing method
2015-04-29
Patent
Electronic Resource
English
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