JOINT DEVICE

• Main Author: HORI KEITA
• Format: Patent
• Language: English; Japanese
• Published: 06.04.2017
• Subjects: BLASTING; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; ENGINEERING ELEMENTS AND UNITS; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; FURNITURE; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HUMAN NECESSITIES; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; RANGES; SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; SPICE MILLS; SUCTION CLEANERS IN GENERAL; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TOILET ACCESSORIES; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide a joint device capable of preventing an engaging member for engaging an outer cylinder part with an inner cylinder part from being pulled out of it.SOLUTION: An outer cylinder part 142 of a returning side arm 14 is formed with an insertion hole 144 passing through it. An inner cylinder part 64 of an outer cylinder body 11 is formed with an engaging groove 644 extending in a circumferential direction. An engaging pin member 7 is arranged over the insertion hole 144 and the engaging groove 644 under a state in which the inner cylinder part 64 is inserted into the outer cylinder part 142, thereby the pulling-out of the returning side arm 14 and the outer cylinder body 11 from each other is prevented and a relative turning between the returning side arm 14 and the outer cylinder body 11 is allowed. The outer cylinder body 11 is provided with a stopper wall 11A. The stopper wall 11A can be relatively displaced between a first position where it is placed near the insertion hole 144 to prevent pulling-out of the engaging pin member 7 and a second position where it is displaced in a circumferential direction in respect to the insertion hole 144 to allow the pulling-out of the engaging pin member 7 by a relative turning of the returning side arm 14 and the outer cylinder body 11.SELECTED DRAWING: Figure 2 【課題】外筒部と内筒部とを係合する係合部材が抜け出すことを防止できる継手装置を提供すること。【解決手段】戻り側アーム１４の外筒部１４２には、挿入孔１４４が貫通形成されている。外部筒体１１の内筒部６４には、周方向に延びる係合溝６４４が形成されている。外筒部１４２に内筒部６４が挿入された状態で、係合ピン部材７が挿入孔１４４と係合溝６４４に跨って配置されることで、戻り側アーム１４と外部筒体１１との互いの抜け出しが防止されかつ、戻り側アーム１４と外部筒体１１との相対回動が許容される。外部筒体１１には抜け止め壁１１Ａが設けられている。抜け止め壁１１Ａは、戻り側アーム１４と外部筒体１１との相対回動によって、挿入孔１４４に臨んで係合ピン部材７の抜け出しを防止する第一位置と、挿入孔１４４に対して周方向へずれて係合ピン部材７の抜け出しを許容する第二位置に相対変位が可能である。【選択図】図２