Patent ID: 6286213
Filing Date: 2001-09-11
Classification: F02M,Y10T

Abstract:
A method of securing intake tubes in an intake manifold comprising the steps of:inserting one end of an intake tube into a corresponding intake tube mounting ring;inserting a tubular jig into insert areas of the intake tube mounting ring and the intake tube through an inner side of the intake tube mounting ring, the jig including separate sections defined by parallel slits which extend to a predetermined length along the axis, and also including a plurality of spot projections and an annular projection, the spot projections being disposed on front portions of outer surfaces of the separate sections and spaced from each other along a circumferential direction of the separate sections, and the annular projection being positioned rearward of the spot projections;inserting a pressing tool into the interior of a tubular body of the jig, the pressing tool comprising a bar with a diameter reduced towards its front end;driving the pressing tool to advance relative to the insert areas using a pressing means so that the spot projections and the annular projection of the jig move radially and causes the outer side of the intake tube to press against the inner side of the intake tube mounting ring so as to have a configuration conforming to the configurations of the spot projections and the annular projection, thereby joining the intake tube to the intake tube mounting ring by its outward plastic deformation to conform to the configurations of the spot projections and the annular projection; andbrazing the intake tube mounting ring and the intake tube by applying a brazing material therebetween, the brazing material being prevented by the annular projection from leaking toward the intake tube mounting ring.