Patent ID: 6471434
Filing Date: 2002-10-29
Classification: A47B,F16B,H02B,Y10T

Abstract:
A joint structure, which strengthens steel pipe stability, comprising: a fixture element, which can be slipped into a vertical steel pipe, a joint block, which joins two transversal steel pipes on their inner sides, and a fixture screw, which fastens the joint block and the vertical steel pipe to unite both of the transversal steel pipes and the vertical steel pipe; furthermore, there are punched fixture screw holes on front corners of the vertical steel pipe; also, on both of the inner lateral ends of the transversal steel pipes, there are clip holes, of which adjacent joint ends of the two transversal steel pipes having an arched opening at a location symmetrically matching the fixture screw hole on the vertical steel pipe after connection of the transversal steel pipes thereto; furthermore, on both ends of the joint block, there are two extended panels, of which there are two adjacent insert blocks, which can be exactly inserted into the clip holes on the transversal steel pipes and there is a piercing hole in the center of each insert block; a bottom of the fixture element having a base to fit an inner wall of the vertical steel pipe and the base extrudes upward to hit a right-angle fixture base on four corners of the inner wall of the vertical steel pipe, also, the fixture base having a fixture screw hole, which exactly matches the fixture screw holes on the vertical steel pipe; furthermore, through respectively inserting the insert blocks into the clip holes on two of the transversal steel pipes, both sides of the joint block exactly hit the inner end of the two transversal steel pipes, then applying the fixture screw for fixture to achieve the effect of convenient assembly.