When a vehicle involved in a collision, this mechanism helps prevent the steering main shaft from injuring the driver in two ways: by the breaking at the time of the collision (primary shock); and by reducing the secondary shock imposed upon the driver’s body when it hits the steering wheel due to inertia. Impact-absorbing steering columns are classified into the following types.
• Bending bracket type
• Ball type
• Sealed-in pulverized silicon-rubber type
• Mesh type
• Bellows type