Structure for improving dynamic stiffness of inner plate of vehicle door

The utility model discloses a structure for improving the dynamic stiffness of a vehicle door inner plate. The structure comprises the vehicle door inner plate and a reinforcing structure, a through hole is formed in the vehicle door inner plate; the reinforcing structure comprises a reinforcing plate rivet nut and a bolt; mounting holes are formed in the two ends of the reinforcing plate, and the rivet nuts are fixedly arranged on the automobile door inner plate. And the bolt is in threaded connection with the rivet nut, so that the reinforcing plate and the vehicle door inner plate are mounted together. Therefore, the reinforcing plate is fixed on the vehicle door inner plate and can bear impact force during side collision, so that the vehicle door inner plate has enough strength and rigidity, and the safety of vehicle collision is improved. 本实用新型公开了一种提升车门内板动刚度结构，包括：车门内板和加强结构；车门内板上设置有通孔；加强结构包括加强板拉铆螺母、螺栓；加强板的两端均设有安装孔，拉铆螺母固设在车门内板上；螺栓和拉铆螺母螺纹连接，使得加强板和车门内板安装在一起。如此，本实用新型将加强板固定在车门内板上，能够承受侧碰时的冲击力，使得车门内板具有足够的强度和刚度，从