PIPE JOINT FOR EXHAUST SYSTEM, MANUFACTURING METHOD THEREFOR, EXHAUST SYSTEM COMPONENT AND MANUFACTURING METHOD THEREFOR

• Main Author: UCHIKAWA YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.04.2018
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To satisfy a desire to provide a compact-shaped pipe joint so as to perform an air-tight connection between the exhaust system components in which influence by heat generated at the time of assembly work or usage can be reduced, and exhaust system components provided with the pipe joint.SOLUTION: A pipe joint 1 for air-tightly connecting between at least a first pipe 61 and a second pipe 70 belonging to an exhaust system comprises a pipe part 2 constituted to have its extremity end protruded toward the second pipe 70; a cylindrical bent-back part 3 that is bent back at least once in an axial direction of the pipe part 2 and connected to a base end part of the pipe part 2 at its one end part; and a flange part 4 connected to the other end part of the bent-back part 3 to extend outward in a radial direction and constituted by a seal part 4a to perform an air-tight seal between the first pipe 61 and the second pipe 70 at its small diameter side and a fastening part 4b to fasten between the first pipe 61 and the second pipe 70 at its larger diameter side.SELECTED DRAWING: Figure 5 【課題】組立時または使用時に発生する熱による影響が低減可能であるコンパクトな形状を備えた、排気系部品の間を気密に連結するための管継手およびそれを備えた排気系部品が望まれる。【解決手段】排気系に属する少なくとも第１管６１および第２管７０の間を気密に連結するための管継手１は、先端部が第２管７０側へ突出するよう構成される管部２、管部２の軸方向に少なくとも一回折り返され、その一端部で管部２の基端部に接続される筒状の折り返し部３、および折り返し部３の他端部に接続されて径方向外方へ延在し、その小径側に第１管６１と第２管７０との間を気密にシールするためのシール部４ａが構成され、その大径側に第１管６１と第２管７０の間を締結する締結部４ｂが構成されるフランジ部４を有する。【選択図】図５