flush toilet

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl capable of preventing washing water flowing in a rim portion from splashing outside the toilet bowl. SOLUTION: The flush toilet bowl 1 includes a bowl part 8 having a bowl-shaped sewerage receiving surface 14, a rim portion 16 formed at the upper edge with its inner peripheral face 17 rising in the almost vertical direction, and a shelf portion 18 formed between the rim portion and the sewerage receiving surface, a rim discharge port 26 for discharging washing water onto the shelf portion of the bowl part to form a swirl flow f1, and a rim headrace 10d for supplying the washing water to the rim discharge port, the rim discharge port being formed near a front end 16a in a front side region F of the rim portion, the rim portion having a rear side region R formed with its curvature radius ρ3 larger than a curvature radius ρ1 at the front end in the front side region F1 of the rim portion and almost constant symmetrically, the rim discharge port serving for discharging water toward the front side to form a swirl flow so that the water flows through the front end in the front side region of the rim portion to the rear side region of the rim portion.

Description

technical field [0001] The present invention relates to a flush toilet, and more particularly relates to a flush toilet that cleans the toilet with flush water supplied from a flush water source and discharges waste. Background technique [0002] Conventionally, as a flush toilet that cleans the toilet and discharges waste, a flush toilet as described in Patent Document 1 is known, in which the inner periphery of the inner edge portion formed on the upper edge of the bowl of the flush toilet is formed It is a vertical or outwardly expanding shape, and the washing water is spouted horizontally from the inner edge water spout formed on the rear side of the inner edge to form a swirling flow, and at the same time, the jet water spout is arranged at the bottom of the basin and the front end to the water. The drain trap spits out water to create a siphon effect that removes waste. [0003] Moreover, there is also known a flush toilet as described in Patent Document 2, in which t...

AI Technical Summary

Problems solved by technology

[0006] However, in the flush toilet described in Patent Document 1, since the inner periphery of the inner edge formed on the upper edge of the basin is formed in a vertical or outwardly expanding shape, the inner periphery of the inner edge Since there are many positions where the radius of curvature of the inner peripheral surface of the rim portion changes, the flush water spouted from the rim spout may flow to the outside of the toilet beyond the rim portion when swirling and flowing along the rim portion. fly out question

[0007] Moreover, in the flush toilet described in the above-mentioned Patent Document 2, since the flushing water flow spouted from the water spout on the rear side of the toilet passes through the arc-shaped front side region of the inner edge, from the linear side to the When the arc-shaped rear side area is transferred, it may not be able to smoothly transfer along the track of the water guide channel at the inner edge part. In addition, in the rear side area of ​​the inner edge part, although it is a shape that rises in a substantially vertical direction, Also, the above-mentioned table turning part is not provided, so there is also a problem that the flush water may fly out to the outside of the toilet.

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