WASHING WATER TANK DEVICE, AND TOILET BOWL SYSTEM INCLUDING THE SAME

• Main Authors: KUROISHI MASAHIRO, HASHIMOTO HIROSHI, KITAURA HIDEKAZU, HATAMA KENJI, HAYASHI NOBUHIRO, SHIMUTA AKIHIRO, SHINOHARA KOKI
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2022
• Subjects: FIXED CONSTRUCTIONS; FLUSHING VALVES THEREFOR; SEWERAGE; WATER SUPPLY; WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES

To provide a washing water tank device capable of easily reducing the pressure of washing water in a pressure chamber, and a toilet bowl system including the same.SOLUTION: A disclosed washing water tank device includes: a water storage tank 10; a drain valve 12; a drain valve hydraulic drive unit 14; a clutch mechanism 22; and a float mechanism 26 that is operated according to the water level in the water storage tank. The drain valve hydraulic drive unit 14 includes: a cylinder 14a into which supplied wash water flows; a piston 14b that is slidably placed in the cylinder partitioning inside the cylinder into the pressure chamber and the back pressure chamber, where the piston 14b is configured to be moved from a first position to a second position due to the pressure of the washing water flowing into the pressure chamber; an outflow part 24b that drains the wash water in the cylinder; and a communication mechanism 46 that communicates between the pressure chamber and the outflow part after turning off the clutch mechanism.SELECTED DRAWING: Figure 3 【課題】圧力室の洗浄水の圧力を低下させやすくできる洗浄水タンク装置、及びそれを備えた水洗便器装置を提供する。【解決手段】本発明の洗浄水タンク装置は、貯水タンク１０と、排水弁１２と、排水弁水圧駆動部１４と、クラッチ機構２２と、貯水タンク内の水位に応じて作動されるフロート機構２６と、を有し、排水弁水圧駆動部１４は、供給された洗浄水が流入するシリンダ１４ａと、シリンダ内に摺動可能に配置されるピストン１４ｂであって、ピストンは、シリンダ内を圧力室と背圧室とに区画し、さらに、ピストンは上記圧力室に流入した洗浄水の圧力により第１の位置から第２の位置に移動される、ピストン１４ｂと、シリンダ内の洗浄水を流出させる流出部２４ｂと、クラッチ機構の切断後に、圧力室と流出部とを連通させる連通機構４６とを備える。【選択図】図３