CONNECTION STRUCTURE, AIRBAG DEVICE, AND VEHICLE SEAT

• Main Authors: YAMAZAKI MASAYUKI, FUKUMOTO KENJI, HASHIZUME TOMOKI
• Format: Patent
• Language: English; Japanese
• Published: 13.09.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SEATS SPECIALLY ADAPTED FOR VEHICLES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WEAPONS

To provide a technique capable of making smoothness of rotation compatible with sealability of a fluid in a structure in which two ducts in which the fluid is circulated are connected in such a manner that one flow tube is rotatable with respective to the other flow tube.SOLUTION: A connection structure includes: a first connection part which is formed from one end including an opening of a first tube; and a second connection part which is formed from one end including an opening of a second tube. The first connection part is inserted from the opening of the second tube to the second connection part, and the first connection part and the second connection part are connected in such a manner that the second tube is rotatable at an angle in a predetermined range with respect to the first tube. In a first state where a fluid is not flowing in a channel, a gap is formed between an outer surface of the first connection part and an inner surface of the second connection part and in a second state where the fluid is flowing in the channel, the first connection part is deformed to be expanded outside of the channel by a pressure of the fluid, such that the gap becomes smaller than that in the first state.SELECTED DRAWING: Figure 6 【課題】流体が流通可能な２つの流管を、一方の流管が他方の流管に対して回動可能となるように連結する構造において、回動の円滑性と流体のシール性とを両立することのできる技術を提供する。【解決手段】連結構造は、第１管の開口を含む一端部によって形成された第１連結部と、第２管の開口を含む一端部によって形成された第２連結部と、を含み、第１連結部が第２管の開口から前記第２連結部に挿入されており、第２管が第１管に対して所定範囲の角度で回動可能となるように、第１連結部と第２連結部とが連結されており、流体が流路を流れていない第１の状態では、第１連結部の外面と第２連結部の内面との間に隙間が形成され、且つ、流体が流路を流れている第２の状態では、流体の圧力により第１連結部が流路の外側へ膨らむように変形することで、第１の状態よりも隙間が小さくなるように、構成されている。【選択図】図６