SEAL STRUCTURE

• Main Authors: OITA SHINJI, MURATA SOHEI, AOSHIMA KUNIO
• Format: Patent
• Language: English; Japanese
• Published: 31.07.2023
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; CYLINDERS; 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; PIPES; PISTONS; SEALINGS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a seal structure which facilitates attachment of an annular seal member without impairing sealability to achieve good assemblability.SOLUTION: In a seal structure, a space between a shaft-like member 1 and a connection hole 3 into which the shaft-like member 1 is inserted is sealed in a liquid-tight state by an annular seal material 4 fitted into the outer periphery side of the shaft-like member 1. A shaft end part 6 having an outer diameter which is reduced through a step part 5 is formed at an end part of the shaft-like member 1. The seal material 4 adheres to and is fitted in the outer periphery side of the shaft end part 6. The step part 5 forms a first side wall part 8 which restricts axial movement of the seal material 4 fitted in the shaft end part 6. A second side wall part 10 which faces the first side wall part 8 across the seal material 4 fitted in the shaft end part 6 is formed protruding to the center side of the connection hole 3 at an inner periphery part of the connection hole 3.SELECTED DRAWING: Figure 1 【課題】シール性を損なうことなく環状のシール部材の取り付けを容易にし、ひいては組付け性の良好にシール構造を提供する。【解決手段】軸状部材１と軸状部材１が挿入される接続孔３との間を、軸状部材１の外周側に嵌合させた環状のシール材４によって液密状態に封止するシール構造であって、軸状部材１の端部に、段差部５を介して外径が小さくなっている軸端部６が形成され、シール材４が軸端部６の外周側に密着して嵌合し、段差部５が、軸端部６に嵌合しているシール材４の軸線方向の移動を規制する第１側壁部８を形成し、軸端部６に嵌合しているシール材４を挟んで第１側壁部８と対向する第２側壁部１０が、接続孔３の内周部に接続孔３の中心側に突出して形成されている。【選択図】図１