Interference connection energy-absorbing type steering transmission down shaft

The device is an overly-communicated and energy-absorbing reversing transmission lower shaft relating to the reversing device of the vehicle; the structure is that the spline shafts are provided with the spacing between; the spline set is pressed with two symmetrical upper and lower flutes; after being deformed, the spline set is overly communicated with the spline shaft to have the absorption effect and eliminate the matching spacing. The utility model is simple in structure and can avoid the abnormal sound when tired and relaxed; the manufacturing cost is low; at the same time, the device can still monitor and control the value of the absorption capacity of the product.