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A platform for research: civil engineering, architecture and urbanism
CHECK VALVE
PROBLEM TO BE SOLVED: To provide a check valve attached to a drain piping in which a flow prevention function can be improved, its installation is facilitated and the flow prevention function can be realized in a stable manner.SOLUTION: A check valve comprises a check valve main body 2 and a segment of pipe to be attached and arranged above the check valve main body 2, and the check valve is attached while an attaching part 21 of the check valve main body 2 is outwardly fitted to the part to be attached. The attaching part 21 at the upper end of the check valve main body 2 is formed while its outer circumference and inner circumference are expanded at their diameters and its shape is flat as seen from its top plan view. In turn, the part to be attached is formed into a circular shape. Accordingly, when the attaching part 21 is outwardly fitted to the attaching part, a short diameter side of the attaching part 21 is substantially expanded and at the same time a stress accompanied with the deformation is applied to an opening or closing part 23, and the stress is added in such a direction as one in which the abutting surfaces of the opening or closing part 23 approach to each other.SELECTED DRAWING: Figure 1
【課題】排水配管に取り付けられる逆止め弁において、逆流防止機能を向上させ。且つ取り付けが容易であって、逆流防止機能が安定して発揮される逆止め弁を提供する。【解決手段】逆止め弁は逆止め弁本体２と、逆止め弁本体２の上方に配置された配管の被取付部より構成され、逆止め弁本体２の取付部２１が被取付部に外嵌めされることによって取り付けられる。取付部２１は逆止め弁本体２の上端において、外周及び内周が拡径して形成され、平面視において扁平形状を成している。一方、被取付部は円形に形成されている。従って、取付部２１を被取付部に外嵌めした際、取付部２１の短径側が大きく変形するとともに、当該変形に伴う応力が開閉部２３へと加わることにより、開閉部２３に対し、当接する面同士が互いに近接する方向に応力が加わる。【選択図】図１
CHECK VALVE
PROBLEM TO BE SOLVED: To provide a check valve attached to a drain piping in which a flow prevention function can be improved, its installation is facilitated and the flow prevention function can be realized in a stable manner.SOLUTION: A check valve comprises a check valve main body 2 and a segment of pipe to be attached and arranged above the check valve main body 2, and the check valve is attached while an attaching part 21 of the check valve main body 2 is outwardly fitted to the part to be attached. The attaching part 21 at the upper end of the check valve main body 2 is formed while its outer circumference and inner circumference are expanded at their diameters and its shape is flat as seen from its top plan view. In turn, the part to be attached is formed into a circular shape. Accordingly, when the attaching part 21 is outwardly fitted to the attaching part, a short diameter side of the attaching part 21 is substantially expanded and at the same time a stress accompanied with the deformation is applied to an opening or closing part 23, and the stress is added in such a direction as one in which the abutting surfaces of the opening or closing part 23 approach to each other.SELECTED DRAWING: Figure 1
【課題】排水配管に取り付けられる逆止め弁において、逆流防止機能を向上させ。且つ取り付けが容易であって、逆流防止機能が安定して発揮される逆止め弁を提供する。【解決手段】逆止め弁は逆止め弁本体２と、逆止め弁本体２の上方に配置された配管の被取付部より構成され、逆止め弁本体２の取付部２１が被取付部に外嵌めされることによって取り付けられる。取付部２１は逆止め弁本体２の上端において、外周及び内周が拡径して形成され、平面視において扁平形状を成している。一方、被取付部は円形に形成されている。従って、取付部２１を被取付部に外嵌めした際、取付部２１の短径側が大きく変形するとともに、当該変形に伴う応力が開閉部２３へと加わることにより、開閉部２３に対し、当接する面同士が互いに近接する方向に応力が加わる。【選択図】図１
CHECK VALVE
逆止め弁
ITO YOSHIHIRO (author) / SASAGAWA TOMOHISA (author)
2016-04-11
Patent
Electronic Resource
Japanese