Patent ID: 8256811

Claim:
A door gripper for a vehicle comprising: a frame having a tool mounting portion at a center of a rear side to mount a tool changer of a robot; upper clamping units mounted by transverse sliding plates on a transverse guide rail provided transversely at an upper portion of the frame to be transversely slidable by transverse electric cylinders, respectively, and having upper clampers restricting clamping points at both sides of an upper portion of a door with respect to an upper locator, when upper clamping cylinders operate; a lower clamping unit having a longitudinal sliding plate to be movable up/down by a longitudinal electric cylinder disposed longitudinally at a lower portion of the frame, moved forward/rearward by an air brake on the longitudinal sliding plate, and restricting one side of a lower portion of the door with respect to a lower locator by driving a lower clamping cylinder, using a lower clamper; and wherein the upper clamping units further include: the transverse guide rail transversely disposed at the upper portion of the frame; the transverse sliding plates slidably disposed at one side and the other side of the transverse guide rail; the transverse electric cylinders transversely disposed at the upper portion of the frame above and under the transverse guide rail and having operating rods with ends connected to extending ends of the transverse sliding plates; the upper locators disposed forward at the transverse sliding plates; the upper clamping cylinders disposed in the front-rear direction at the upper portions of the upper locators and having rear ends hinged to the upper locators; the upper clampers having sides hinged to ends of the upper locators and other sides hinged to an end of a rod of the upper clamping cylinders.