PROBLEM TO BE SOLVED: To provide a drainage device which can make compatible both drainage performance and the prevention of the intrusion of water for a long period of time.SOLUTION: A drainage device 1 includes: a housing 2 having an inlet 5 of water, and a discharge port 6 for discharging water flowing into the housing from the inlet 5 to the outside; a valve body 3 which can take a closed state for regulating circulation between the inlet 5 and the discharge port 6, and an open state for permitting circulation between the inlet 5 and the discharge port 6; and a water expansion rubber body 4 which is arranged between the housing 2 and the valve body 3 in the housing 2, expands by contact with water, displaces the valve body 3, and transits the valve body to the open state from the closed state.SELECTED DRAWING: Figure 1
【課題】排水性と水の浸入の防止とを長期にわたって両立することができる排水装置を提供する。【解決手段】水の入口部5および当該入口部5から内部に流入した水を外部へ排出するための排出口6とを有するハウジング2と、入口部5と排出口6との間の流通を規制する閉状態と、入口部5と排出口6との間を連通させる開状態とを取りうるように構成された弁体3と、ハウジング2の内部においてハウジング2と弁体3との間に設けられ、水の接触によって膨張し、弁体3を変位させて閉状態から開状態に移行させる水膨張ゴム体4とを含む、排水装置1を提供する。【選択図】図1
DRAINAGE DEVICE
排水装置
2017-06-22
Patent
Electronic Resource
Japanese