JPH02150488U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing an automobile exhaust pipe joint having the first configuration of the present invention, Fig. 2 is a plan view of the upstream exhaust pipe, and Fig. 3 shows an automobile having the second configuration of the present invention. FIG. 4 is a vertical cross-sectional view showing another embodiment of the spring receiving member, and FIG. 5 is a vertical cross-sectional view showing a conventional exhaust pipe joint for automobiles. 20: Downstream exhaust pipe, 21: Spherical part, 23: Cylindrical part, 24: Nut, 30: Upstream exhaust pipe, 31
: pipe end, 32: annular flange, 40: seal body, 50, 50': spring receiving member, 52: insertion hole, 60: bolt, 70: coil spring.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an automobile exhaust pipe joint consisting of a downstream exhaust pipe, an upstream exhaust pipe, and a sealing body disposed between them, one exhaust pipe has an end portion of the exhaust pipe. A spherical part with a diameter expanded in the shape of a morning glory and a cylindrical part connected to the spherical part are formed on the cylindrical part, and at least two nuts are fixed to the outer peripheral surface of the end of the cylindrical part, and the other exhaust pipe is fixed to the cylindrical part. An annular flange part is formed on the exhaust pipe side, leaving the pipe end part on the exhaust pipe side, and the pipe end part has a circular hole on the inner surface, a partially convex spherical part on the outer surface, and a large diameter part side of the partially convex spherical part. A seal body having a flat portion fits the circular hole into the outer circumferential surface of the tube end, makes the partially convex spherical surface slide into contact with the concave spherical surface on the inner surface of the spherical portion, and brings the flat portion into contact with the annular flange. A spring receiving member having a through hole with an inner diameter larger than the outer diameter of the other exhaust pipe is fixed to the opening side of the cylindrical part by a bolt screwed into the nut. An exhaust pipe joint for an automobile, characterized in that a coil spring is disposed between an annular flange portion of the exhaust pipe and a spring receiving member. (2) In an automobile exhaust pipe joint consisting of a downstream exhaust pipe, an upstream exhaust pipe, and a sealing body disposed between them, one exhaust pipe has a diameter expanded in the shape of a morning glory at the end of the pipe. A spherical part and a cylindrical part connected to the spherical part are formed, and at least two bolts are fixed to the outer peripheral surface of the end of the cylindrical part with threaded parts protruding toward the opening side of the cylindrical part. The other exhaust pipe is formed with an annular flange part leaving the pipe end on the exhaust pipe side, and the pipe end has a circular hole on the inner surface, a partially convex spherical part on the outer surface, and the partially convex spherical surface. A seal body having a flat part on the large diameter side of the part fits the circular hole into the outer circumferential surface of the tube end, brings the partially convex spherical part into sliding contact with the concave spherical part on the inner surface of the spherical part, and the flat part A spring receiving member is disposed in contact with the annular flange portion, and has a through hole on the opening side of the cylindrical portion with an inner diameter larger than the outer diameter of the other exhaust pipe, and is screwed onto the threaded portion of the bolt. 1. An exhaust pipe joint for an automobile, characterized in that the joint is fixed by a mating nut, and a coil spring is disposed between an annular flange portion of the exhaust pipe and a spring receiving member.