Patent ID: 7524130

Claim:
A member-joining device connecting a first member having a pair of opposing walls and a second member having a pair of opposing walls comprising, a first bridge member for spanning between the opposing walls of said first member at a predetermined position of said first member; a second bridge member for spanning between the opposing walls of said second member at a predetermined position of said second member; a drawing means for drawing the first bridge member and the second bridge member in the direction where both are close to each other; wherein said first member and said second member are pressed and connected by a drawing force based on said drawing means, said drawing means draws and tightens said first bridge member and said second bridge member by utilizing screw forwarding mechanisms; wherein the second member adjacent to one end of the first member is connected through the first member; the first member including a pair of slightly beveled contact faces in a downwardly drawing direction; said second member including at least one end face pressed to the contact face of the first member to join the first and the second members; wherein said second member is a pipe member; said first member comprising: a tubular outer member having a cross sectional shape coinciding with said second member; and an inner member projecting outward from each contact face of the outer member and the projection portion of said inner member is inserted into the end portion of the second member to connect the first member and the second member together; and wherein a line connecting between said first bridge member and said second bridge member is not in right angles to said contact face from a side view; a dividing force is generated by the drawing force to slide a contact face and an end face; an outer peripheral face of said inner member and an inner peripheral face of said second member contact closely with the sliding force; and a position of said first member and said second member is determined.