PROBLEM TO BE SOLVED: To provide a flap valve device capable of surely preventing a pin member from falling off from a bearing hole even before its main body is inserted into a pipe.SOLUTION: A flap valve device 10 includes a main body 20 inserted and disposed in a pipe, a flap-like valve body 50 pivotally supported on the main body 20, a spring member 80 for energizing the valve body 50 in a closing direction toward one end opening of the main body 20, a first bearing hole 35 formed in the main body 20, a second bearing hole 53 formed in the valve body 50, and a pin member 70 inserted into the first bearing hole 35 and the second bearing hole 53. The pin member 70 is formed with an annular recess 73 at a fixed outer peripheral part. The main body 20 is provided with an elastic fitting piece 40 extending toward the pin member 70 and, in a state where the pin member 70 is inserted into the first bearing hole 35 and the second bearing hole 53, elastically fitted to the annular recess 73.SELECTED DRAWING: Figure 1
【課題】配管内に本体挿入前でも、ピン部材が軸受孔から脱落することを確実に防止できるフラップ弁装置を提供する。【解決手段】このフラップ弁装置10は、配管内に挿入配置される本体20と、本体20に軸支されるフラップ状の弁体50と、弁体50を本体20の一端開口部に向けて閉じる方向に付勢するバネ部材80と、本体20に形成された第1軸受孔35と、弁体50に形成された第2軸受孔53と、第1軸受孔35及び第2軸受孔53に挿入されるピン部材70とを有し、ピン部材70は、外周定箇所に環状凹部73が形成され、本体20には、ピン部材70に向けて延び、第1軸受孔35及び第2軸受孔53にピン部材70が挿入された状態で、環状凹部73に弾性的に嵌合する弾性嵌合片40が設けられている。【選択図】図1
FLAP VALVE DEVICE
フラップ弁装置
2017-11-16
Patent
Electronic Resource
Japanese
FLAP VALVE DEVICE AND GAS-LIQUID SEPARATING DEVICE COMPRISING FLAP VALVE DEVICE
European Patent Office | 2020
|Flap valve device and gas liquid separation device provided with flap valve device
European Patent Office | 2018
|