B-pillar reinforcer and B-pillar reinforcing structure

The utility model discloses a B column reinforcer and a B column reinforcing structure. The B column reinforcing piece comprises a yin-yang table structure and side inclined walls arranged on the twosides of the yin-yang table structure respectively. The female-male table structure and the side inclined wall extend in parallel along the length direction of the B column reinforcer; the female-maletable structure comprises a first bent portion and a second bent portion which are sequentially connected from top to bottom, the first bent portion protrudes towards the inner side, the second bentportion protrudes towards the outer side, and the bottom face of the first bent portion and the bottom face of the second bent portion are connected to form a middle inclined wall. According to the utility model, through the B-pillar reinforcer in a yin-yang platform structure form, the bending resistance of the B pillar is improved, the deformation of a passenger compartment is reduced, and the safety and riding comfort of