Patent ID: 7506845

Claim:
A stock bar and horizontal bar coupling device for mounting a sprinkler, comprising a main body, a mounting part provided on an upper portion of the main body and having an inlet for fitting a stock bar into the mounting part, a fastening member vertically fastened to an upper portion of the mounting part to fasten the stock bar, a U-shaped fitting part provided on a lower portion of the main body so that a locking step of a T-shaped bar is fitted into the fitting part, a first screw hole formed in a front surface of the fitting part so that a screw hole fastening member is inserted into the first screw hole to fasten the T-shaped bar located in the U-shaped fitting part, the main body having an L-shaped projection at a middle portion of a front thereof, and the L-shaped projection extending away from the main body, thus providing a coupling part to be coupled to a locking step of a C-shaped bar, and a second screw hole located under the first screw hole to fasten the screw hole fastening member to a cross bar extending between two T-shaped bars.