Vibration damper for vehicle

The utility model provides a vibration damper for automobiles, which comprises a bracket outer cylinder and a damper, wherein the damper comprises an operating cylinder and a piston and connecting rod assembly which is matched with the operating cylinder; the upper end of the operating cylinder is provided with a bottom valve; a piston is provided with a compression compensation valve and a rehabilitation compensation valve; the outer side of the operating cylinder is sheathed and sealed with an outer shell; a hollow cavity between the operating cylinder and the outer shell is communicated with the hollow cavity on the upper part of the among with operating cylinder through the bottom valve to form an airtight hollow pressure cavity; the outer shell can be sheathed on the bracket outer cylinder in sliding; one end of a connecting rod of the piston and connecting rod assembly passes through the outer shell and the operating cylinder, and is fixedly connected to the piston; the other end of the connecting rod of the piston and connecting rod assembly is fixed to the bottom of the inner side of the bracket outer cylinder. The utility model can make the diameter of the outer shell longer (in general 30-40MM), enhances the capacity of a shock absorber to bear a lateral force, and has the advantage of long service life because of a built-in oil seal.