Flush toilet

Abstract

A flush toilet includes a toilet bowl part structured to have a bowl-like waste receiving surface, a rim part structured to form an upper end side portion of the toilet bowl part, and a water discharge part structured to discharge flush water into the toilet bowl part to form a swirling flow, wherein one surface part out of a front surface part and a rear surface part of the toilet bowl part is provided with one end part of a front-rear direction of the toilet bowl part, and the flush toilet further comprises an upper guide part structured to be provided on a flush water path from the water discharge part to the one end part and guide at least a part of the flush water upward.

1 . A flush toilet, comprising:
 a toilet bowl part structured to have a bowl-like waste receiving surface;   a rim part structured to form an upper end side portion of the toilet bowl part; and   a water discharge part structured to discharge flush water into the toilet bowl part to form a swirling flow,   wherein a first surface part out of the toilet bowl part is provided with an end part of the toilet bowl part in a front-rear direction, and   the flush toilet further comprises an upper guide part structured to be provided on a flush water path from the water discharge part to the end part and guide at least a part of the flush water upward.   
     
     
         2 . The flush toilet of  claim 1 , wherein the flush water guided upward by the upper guide part forms an induction flow which flows upward and then flows downward on the flush water path. 
     
     
         3 . The flush toilet of  claim 2 , wherein the induction flow joins another water flow while flowing downward, and flows upward by a centrifugal force while running along the first surface part together with the other water flow which the induction flow joins. 
     
     
         4 . The flush toilet of  claim 1 , wherein an inner peripheral surface of the rim part is, on the the first surface part, provided with a continuous surface which is continuous from an upper end inner edge part of the toilet bowl part to an outer peripheral end part of the waste receiving surface without an overhang surface being formed. 
     
     
         5 . The flush toilet of  claim 1 , wherein the water discharge part discharges the flush water into the toilet bowl part through an opening part formed on a side surface part of the toilet bowl part. 
     
     
         6 . The flush toilet of  claim 5 , wherein
 an inner peripheral surface of the rim part is provided with a continuous surface which is continuous from an upper end inner edge part of the toilet bowl part to an outer peripheral end part of the waste receiving surface without the overhang surface being formed, and   the inner peripheral surface of the rim part is provided with the continuous surface in a range over the entire circumference of the toilet bowl part, at a location other than the opening part.   
     
     
         7 . The flush toilet of  claim 1 , further comprising:
 a water conduit through which the flush water is guided to a swirling direction of the swirling flow,   wherein the water conduit has a curved surface part constituting a lower inner corner part of the water conduit,   the curved surface part has an increase section in which a radius of curvature continuously increases as the increase section goes toward the swirling direction, and   the upper guide part is configured by the increase section.   
     
     
         8 . The flush toilet of  claim 7 , wherein the curved surface part has a decrease section which is provided in the swirling direction than the increase section, and in which the radius of curvature continuously decreases as the decrease section goes toward the swirling direction. 
     
     
         9 . The flush toilet of  claim 1 , further comprising:
 an overhang surface which is in contact with the flush water guided upward by the upper guide part.   
     
     
         10 . The flush toilet of  claim 1 , wherein the flush toilet is structured to form an induction flow, which flows upward and then flows downward on the flush water path, by guiding at least a part of the flush water upward on the flush water path. 
     
     
         11 . The flush toilet of  claim 1 , further comprising:
 an inner guide part structured to be provided on a side surface part of the toilet bowl part and guide a part of the flush water colliding with the inner guide part radially inward,   wherein the flush water guided by the inner guide part joins the swirling flow formed in the toilet bowl part radially inward than the inner peripheral surface of the rim part in plan view.   
     
     
         12 . The flush toilet of  claim 11 , wherein the water discharge part discharges the flush water into the toilet bowl part through an opening part formed on a side surface part of the toilet bowl part. 
     
     
         13 . The flush toilet of  claim 12 , wherein the inner peripheral surface of the rim part is, in the range over the entire circumference of the toilet bowl part at the location other than the opening part, provided with the continuous surface which is continuous from the upper end inner edge part of the toilet bowl part to the outer peripheral end part of the waste receiving surface without an overhang surface being formed. 
     
     
         14 . The flush toilet of  claim 11 , further comprising:
 a water conduit through which the flush water is guided to a swirling direction of the swirling flow,   wherein the water conduit has a curved surface part constituting a lower inner corner part of the water conduit,   the curved surface part has an increase section in which a radius of curvature continuously increases as the increase section goes toward the swirling direction, and   the inner guide part is configured by the increase section.   
     
     
         15 . The flush toilet of  claim 11 , wherein the swirling flow is formed by a part of the flush water discharged from the water discharge part. 
     
     
         16 . The flush toilet of  claim 11 , wherein the inner guide part is provided near a water discharge port on a downstream side than the water discharge port of the water discharge part. 
     
     
         17 . The flush toilet of  claim 1 , wherein
 the inner peripheral surface of the rim part has a first surface region provided on a side surface part of the toilet bowl part and a second surface region provided on the first surface part,   each of the first surface region and the second surface region is provided with a continuous surface which is continuous from the upper end inner edge part of the toilet bowl part to an outer peripheral end part of the waste receiving surface without an overhang surface being formed, and   an inclination angle of the second surface region with respect to a vertical surface is gentler than that of the first surface region with respect to the vertical surface.   
     
     
         18 . The flush toilet of  claim 17 , wherein the water discharge part discharges the flush water into the toilet bowl part through an opening part formed on the first surface region. 
     
     
         19 . The flush toilet of  claim 18 , wherein the inner peripheral surface of the rim part is provided with the continuous surface in the range over the entire circumferential of the toilet bowl part at the location other than the opening part. 
     
     
         20 . The flush toilet of  claim 17 , wherein the second surface region includes a first side second surface region provided on the first surface part, and a second side second surface region provided on a second surface part of the toilet bowl part. 
     
     
         21 . The flush toilet of  claim 20 , wherein
 the swirling flow passes through the first side second-surface region and then passes through the second side second surface region, and   the second side second surface region has a gentler inclination angle to the vertical surface than the first side second surface region.   
     
     
         22 . The flush toilet of  claim 17 , further comprising:
 a water conduit through which the flush water is received by a shelf surface and is guided to a swirling direction of the swirling flow,   wherein the inner peripheral end part of the shelf surface is provided at a substantially bilateral symmetrical position.   
     
     
         23 . The flush toilet of  claim 17 , further comprising:
 a water conduit through which the flush water is received by a shelf surface and is guided to a swirling direction of the swirling flow,   wherein the shelf surface is connected to the second surface region in the swirling direction than a front end or a rear end of the toilet bowl part provided on the first surface part.   
     
     
         24 . The flush toilet of  claim 23 , wherein
 the waste receiving surface has a recessed curved surface part provided on a front surface part of the toilet bowl part, and   the recessed curved surface part is continuous from a lower end edge part of the waste receiving surface to an outer peripheral end part of the waste receiving surface at least at a left-right central part of the toilet bowl part.   
     
     
         25 . The flush toilet of  claim 1 , wherein
 the inner peripheral surface of the rim part has a first surface region having a curved surface shape with a radius of curvature within a first range, and a second surface region having a curved surface shape with a radius of curvature smaller than that of the first region in plan view,   each of the first surface region and the second surface region is provided with a continuous surface which is continuous from the upper end inner edge part of the toilet bowl part to an outer peripheral end part of the waste receiving surface without an overhang surface being formed, and   an inclination angle of the second surface region with respect to a vertical surface is gentler than that of the first surface region with respect to the vertical surface.