Bang into
Definition 1 of 2
Pro Tip 1/3Physical Impact
Emphasizes an unintentional collision, often with force and noise. 
Rushing to work, I banged into the door.
Pro Tip 2/3Accidental Nature
Use it to describe a sudden or unforeseen event, not a deliberate action. 
She turned the corner and banged into a waiter carrying drinks.
Pro Tip 3/3Visual Blindness
Often implies not seeing the object or person before the collision. 
He was texting while walking and banged into a streetlamp.