Patent ID: 8919755

Claim:
A clamping apparatus for use in test handlers, wherein the clamping apparatus clamps two or more Hi-Fix boards arranged in a row, the apparatus comprising: at least one first clamping unit installed to simultaneously clamp facing end sides of two adjacent Hi-Fix boards among said two or more Hi-Fix boards; and a plurality of second clamping units each of which is installed to clamp an end side of one of said two or more Hi-Fix boards, wherein the end side does not face other Hi-Fix boards, wherein the first clamping unit includes: a clamper installed to rotate about a fixed rotation point to simultaneously clamp or release the clamping of the facing end sides of said two adjacent Hi-Fix boards, the rotation point being disposed between the facing end sides of said two adjacent Hi-Fix boards; and a driving unit for providing a rotational force to the clamper, wherein the driving unit includes a cylinder which is not disposed between the facing end sides of said two adjacent Hi-Fix boards but disposed in parallel to extended lines of the facing end sides; and wherein the driving unit further includes a connection link and a piston rod moving forward and backward by the cylinder, the connection link having one end rotatably connected to the piston rod and other end rotatably connected to the clamper at a position deviated from the rotation point of the clamper by a preset interval.