TIP STRUCTURE OF PIPE MATERIAL

• Main Author: KUSHIMA HAJIME
• Format: Patent
• Language: English; Japanese
• Published: 28.04.2023
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To prevent cooling water and other heating media remaining within a pipe material from leaking from a tip opening of the pipe material.SOLUTION: A tip structure of a pipe material to which a tubular member is connected detachably is disclosed. The tip structure includes: an insertion part inserted into the tubular member; a tip opening provided at a tip of the insertion part; and an inner flow passage extending from the tip opening in the insertion part. In the tip opening of the insertion part, a return part rising toward the radial inner side makes a circuit in the circumferential direction, and on the inner peripheral surface of an inner flow passage, a projection projecting toward the radial inner side makes a circuit in the circumferential direction. A tip of the projection is located on the radial inner side of a tip of the return part.SELECTED DRAWING: Figure 2 【課題】パイプ材の内部に残存した冷却水又はその他の熱媒体が、パイプ材の先端開口から漏れ出ることを防止し得る。【解決手段】本明細書は管状部材が着脱可能に接続されるパイプ材の先端構造を開示する。当該先端構造は、管状部材の内部へ挿入される挿入部と、挿入部の先端に設けられた先端開口と、先端開口から挿入部の内部を延びる内部流路と、を備え、挿入部の先端開口には、径方向内側へ立ち上がる返し部が、周方向に沿って一巡しており、内部流路の内周面には、径方向内側へ突出する凸部が、周方向に沿って一巡しており、凸部の先端は、返し部の先端よりも、径方向内側に位置している。【選択図】図２