Bracket for fixing fire-fighting sprinkler

A bracket for fixing a fire-fighting sprinkler including end brackets mounted to both end portions of a support frame to fix the support frame to a ceiling and a center bracket to fix the fire-fighting sprinkler to the support frame, wherein

• each of the end brackets includes an inner clamp formed with a lower protruding surface at a lower end portion thereof and a support frame insertion hole through which the support frame is fitted, an outer clamp formed with a lower protruding surface at a lower end portion thereof and a support frame insertion hole through which the support frame is fitted, an upper connection plate to connect the inner clamp and the outer clamp with a constant interval between the inner clamp and the outer clamp, a support frame fixing part provided at the upper connection plate in order to pressurize the support frame, and a locking part disposed at a side surface thereof in order to pressurize the inner clamp and the outer clamp,
• wherein the locking part includes a fixing pin inserted through the inner clamp and the outer clamp, a cam protrusion connected to the fixing pin and having an eccentric axis, and a knob extending from the cam protrusion,
• whereby as the knob pivots from up to down, the cam protrusion pivots to pressurize the inner clamp and the outer clamp, and the lower protruding surface of the inner clamp and the lower protruding surface of the outer clamp contact each other,
• wherein the support frame fixing part is provided in a central cut portion of the upper connection plate and is formed with a pin hole, and the inner clamp and the outer clamp are respectively formed with pin holes, and
• wherein a hinge pin is fitted through the pin hole of the support frame fixing part and the pin holes of the inner clamp and the outer clamp so that the support frame fixing part is coupled to each of the end brackets and pivots about the hinge pin, thereby fixing the support frame to the inner clamp and the outer clamp.