JP6538388B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet, and more particularly to a flush toilet for forming a swirling water flow in a toilet bowl.

  In the flush-type toilet bowl, a washing method is known in which washing water is discharged from one or more water discharge ports into the toilet bowl and the force of the washing water is used to push the waste into the drainage pipe. Hereinafter, the force of pushing out the waste from the inside of the toilet bowl to the drainage pipe will be referred to as "discharge force". In addition, in order to prevent adhesion of dirt on the inner wall surface of the toilet bowl, it is also necessary to wash the inner wall of the toilet bowl in a wide area. Hereinafter, the power to wash the inner wall of the toilet bowl will be referred to as "cleaning power".

  In order to strengthen the cleaning power and discharge power, various studies have been made on the number and positions of discharge ports, the water discharge direction, the water discharge timing, members constituting a water flow passage, and the like. For example, in Patent Document 1, a swirling water flow is formed along the inner wall surface of the toilet bowl from the water outlet provided on the upper left side of the toilet bowl. And the swirling water flow is controlled by changing the width of the shelf which constitutes the water flow path of the swirling water flow.

International Publication WO2004 / 022862 JP 2004-52329 A

  Because the sizes and designs of flush toilets vary, high design skills are required to design an optimal water flow path for each flush toilet. In addition, even when a shelf that serves as a guide rail for the swirling water flow is formed on the inner wall surface of the toilet bowl, it may be difficult to control the water flow sufficiently with the shelf alone.

  The present invention has been made based on the recognition of the above problems, and its main object is to provide a technique for efficiently controlling the swirling water flow in a flush toilet bowl.

  A flush toilet according to an embodiment of the present invention includes a toilet bowl having a water outlet formed on the side, the water outlet spouting water toward the water flow path which turns the inner wall of the toilet bowl in the circumferential direction, and feces The inner wall surface of the front end side half portion of the bowl portion has a first water flow passage on the side where the spout is formed and a second water flow passage on the non-formation side with respect to a central axis extending in the longitudinal direction of the toilet bowl portion Is formed so as to be asymmetric.

  The "front end side half portion" of the toilet bowl means the front side when the inner wall of the toilet bowl is divided into two in the front and back direction. By making the inner wall shape itself of the toilet bowl asymmetrical, in other words, it becomes easier to control the water flow of the swirling water flow substantially by eliminating the premise of making the inner wall shape of the toilet bowl symmetrical. . The first curvature in the first water passage may be smaller than the second curvature in the second water passage, or vice versa.

  An overhang may be formed on the upper end of the toilet bowl to cover the water flow passage in plan view by projecting inward. The inner circumference of the overhang may be symmetrical with respect to a central axis extending in the front-rear direction of the toilet bowl.

  By concealing the inner wall of the left and right asymmetric toilet bowl portion with the left and right symmetrical overhang, the user is less likely to feel discomfort even in terms of design.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to control the turning water flow of a flush toilet bowl.

It is a sectional side view of a flush type toilet. It is a top view of the flush type toilet bowl in 1st Embodiment. It is a top view of the flush type toilet bowl in 2nd Embodiment.

FIG. 1 is a side sectional view of a flush toilet 100. As shown in FIG.
Hereinafter, as shown in FIG. 1 and the like, the direction from the front to the rear of the flush toilet 100 is defined as the X axis, the height direction as the Z axis, and the left and right directions as the Y axis. The Y-axis positive direction is referred to as “left direction”, and the Y-axis negative direction is referred to as “right direction”.
The flush toilet 100 includes a toilet body 102, a toilet seat 104, a water supply tank 106, and functional components 108. The functional component 108 is an electronic device provided with a local cleaning function, a local drying function, a deodorizing function, a toilet seat heating function, and the like. The toilet seat 104 is an annular member in a plan view (z-axis negative direction), and is openably and closably attached to the toilet body 102 via a hinge (not shown). The water supply tank 106 supplies wash water to the functional component 108 and the toilet body 102.

  The toilet body 102 has a toilet bowl 110, a drainage pipe 112, and an outer wall 114. The toilet bowl portion 110 is configured as a container having a bowl-shaped filth receiving surface 130 for receiving filth, and one inner wall surface 126 (side wall surface 126a and shelf surface 126b) forming the water passage 120. The drain pipe 112 is formed at the lower portion of the toilet bowl 110. The outer wall 114 shields internal structures such as the toilet bowl 110 and the drainage pipe 112.

  The drainage pipe 112 forms an S-shaped reservoir water portion 116 at the connection portion with the toilet bowl portion 110. The stagnant water is always stored in the reservoir water portion 116, thereby blocking the odor of the drain pipe 112. The filth which has fallen to the reservoir water portion 116 is pushed out by the washing water together with the stagnant water.

At the upper end of the toilet bowl portion 110, an overhang portion 118 which protrudes inward is formed. The upper surface of the overhang portion 118 is flattened to be a support surface of the toilet seat 104. A water passage 120 is formed between the lower surface of the overhang portion 118 and the side wall surface 126a of the toilet bowl portion 110 and the shelf-like surface 126b (inner wall surface connected to the dirt receiving surface 130).
Hereinafter, two embodiments of the first and second embodiments will be described, but when these are collectively referred to, they will be simply referred to as “the present embodiment”. The side sectional view shown in FIG. 1 is common to the first and second embodiments. 2 and 3 each show a shape in which the overhang portion 118 is superimposed on the toilet bowl portion 110 when it is cut along the line A-A in FIG. 1.

First Embodiment
FIG. 2 is a top view of the flush toilet 100 according to the first embodiment.
FIG. 2 shows the relationship between the inner wall surface 126 of the toilet body 102 and the overhang portion 118. As shown in FIG. The first embodiment is a configuration in which the discharging power is more important than the cleaning power.

  On the inner wall surface 126 (side wall surface 126a, shelf-like surface 126b) of the toilet bowl portion 110, a "water flow passage 120 (flow passage of swirling water flow)" of cleaning water is formed in the circumferential direction (ring shape). The upper part of the water passage 120 is covered by the overhang part 118 (see also FIG. 1). The first water discharge port 122 is formed in the upper portion (side wall surface 126 a) of the inner wall surface 126. In the present embodiment, the first water discharge port 122 is formed on the upper left side of the inner wall surface 126.

  The washing water discharged from the first water discharge port 122 (hereinafter, the water flow formed by the washing water discharged from the first water discharge port 122 is referred to as “first water flow S1”) circumferentially extends the upper portion of the toilet bowl 110 The water is spouted, and the water flow path 120 described above (a region surrounded by the lower surface of the overhang portion 118, the side wall surface 126a, and the shelf surface 126b) is swirled. All or part of the first water flow S1 further continues to turn the inner wall surface 126. After swirling the inner wall surface 126, the swirling water flow finally falls into the reservoir portion 116 and is drained from the drainage pipe 112. The first water flow S1 cleans the inner wall surface 126 of the toilet bowl 110 widely by providing cleaning power, and also provides discharge power by the water pressure at the time of the falling water.

  At the rear of the inner wall surface 126, a second outlet 124 is formed. The washing water discharged from the second water discharge port 124 (hereinafter, the water flow formed by the washing water discharged from the second water discharge port 124 is referred to as a "second water flow S2") joins with the first water flow S1 and is discharged. Strengthen power and / or detergency.

  In any of the first embodiment and the second embodiment described later, the inner wall surface 126 of the toilet bowl 110 forming the water passage 120 is left-right asymmetric. The term “left-right asymmetry” as used herein means that the toilet bowl section 110 is asymmetric with respect to a center line m2 (described later) extending in the front-rear direction.

  In the first embodiment, the curvature (first curvature) of the water flow passage 120 (first water flow passage 120a) on the side (left side) where the first water discharge port 122 is formed is the water flow path on the non-formation side (right side) It is larger than the curvature (second curvature) of 120 (second water passage 120b). The curvature is the reciprocal of the radius (curvature radius) of a circle that approximates the degree of local bending. The “curvature” mentioned here means the curvature of the inner wall surface 126 in a plan view (z-axis direction). In the present embodiment, the curvature of the side wall surface 126a (water passage 120) is meant. The steeper the curve, the smaller the circle approximating the degree of curvature of the curve, so the curvature increases.

  First, of the inner wall surface 126 of the toilet body 102, the tangent line extending in the X direction with respect to the leftmost inner wall surface 126 is m1, and the tangent line extending in the X direction with respect to the rightmost inner wall surface 126 is m3. A line extending in the X direction (center line of the toilet bowl 110) is m2. Similarly, a tangent line extending in the Y direction with respect to the foremost inner wall surface 126 is n1, a tangent line extending in the Y direction with respect to the rearmost inner wall surface 126 is n3, and a line extending in the Y direction at the center of n1 and n2 Let n be n2. Let P be the intersection of m2 and n2.

  Next, four regions R1 to R4 are defined by n1 to n3 and m1 to m3. Region R1 is the upper right region partitioned by n2, n3, m1 and m2, region R2 is the lower right region partitioned by n1, n2, m1 and m2, and region R3 is the area by n1, n2, m2 and m3 The lower left region to be partitioned, region R4, is the upper left region partitioned by n2, n3, m2 and m3.

  The first curvature is the maximum curvature of the inner wall surface 126 in the region R2 on the left side (the side on which the first outlet 122 is formed). In the region R2 shown in FIG. 1, since the first water passage 120a is the steepest at the position T1, the curvature of the position T1 is the first curvature. As shown in FIG. 2, the position T1 is located in front of the first outlet 122 at a corner portion where the left side surface (outer surface) and the front surface (outer surface) of the toilet body 102 intersect.

  The second curvature is the maximum curvature of the inner wall surface 126 (side wall surface 126a) in the region R3 on the right side (the side on which the first outlet 122 is not formed). In the region R3 shown in FIG. 2, at the position T2, the second water passage 120b is the steepest, so the curvature of the position T2 is the second curvature.

  In the case of the general flush toilet 100, since the toilet body 102 is formed symmetrically with respect to the center line m2, the first curvature and the second curvature are equal. However, the toilet bowl portion 110 of the flush-type toilet bowl 100 in the first embodiment has a shape which is intentionally distorted such that the first curvature> the second curvature. In the present embodiment, the inner wall surface 126 has left-right asymmetry in the regions R2 and R3 on the front side of the center line n2. The inner wall surface 126 may be left-right asymmetrical in a region in front of the first outlet 122.

  In the first embodiment, the flush water discharged from the first water discharge port 122 flows at high speed along the first water passage 120a (the water passage 120 in the region R2), but the position T1 has a sharp curve. Most of them collide with the inner wall surface 126 (side wall surface 126a). Since a large amount of water flows into the reservoir 116 with a strong force, the discharge power is increased. The remaining wash water flows through the second water passage 120b of the region R3 as it is as the first water flow S1. Since the second water passage 120b is gently curved, the remaining washing water swirls the water passage 120 with a small amount of falling water to wash the inner wall surface 126 of the regions R3 and R4 firmly, and finally, the second water flow It joins with S2 and drops into the reservoir section 116 also from the rear.

  The overhanging inner circumferential surface 128 of the overhang portion 118 covering the inner wall surface 126 is symmetrical with respect to the center line m2. For this reason, from the view of the user, the left-right asymmetry (distortion) of the inner wall surface 126 of the toilet bowl 110 can be shielded by the left-right symmetrical overhang part 118. It is configured not to give the user a sense of discomfort.

  In the first embodiment, it is also possible to enhance the detergency by adjusting the amount of water, the amount of water, and the first curvature. For example, by increasing the amount of water and the amount of water in the first outlet 122, the amount of water flowing into the region R3 can be increased to enhance the cleaning power. Alternatively, the cleaning power of the region R3 may be enhanced by adjusting the first curvature and flowing the first water flow S1 not in the direction of the reservoir portion 116 but in the direction of the region R3.

Second Embodiment
FIG. 3 is a top view of the flush toilet 100 according to the second embodiment.
Also in FIG. 3, the relationship between the inner wall surface 126 of the toilet body 102 and the overhang portion 118 is shown. The second embodiment has a configuration in which the cleaning power is more important than the discharging power as compared with the first embodiment.

  Also in the second embodiment, the upper portion of the water passage 120 is covered by the overhang portion 118 (see also FIG. 1). The installation locations of the first spout 122 and the second spout are the same as in the first embodiment.

  In the second embodiment, the first curvature of the left water passage 120 (first water passage 120a) where the first water discharge port 122 is formed is the water passage 120 (second water passage) on the non-forming side (right side) It is smaller than the second curvature of 120b).

  In the region R2 shown in FIG. 3, since the first water passage 120a is the steepest at the position T1, the curvature of the position T1 is the first curvature. Further, in the region R3 shown in FIG. 2, at the position T2, the second water passage 120b is the steepest, so the curvature of the position T2 becomes the second curvature. In the flush toilet 100 according to the second embodiment, the second curvature> the first curvature.

  In the second embodiment, the flush water discharged from the first water discharge port 122 flows at high speed along the first water flow passage 120a, but since the first water flow passage 120a has a gentle curve, most of the water is drained. It flows into the area R3 as it is. Therefore, the cleaning power of the inner wall surface 126, particularly, the inner wall surface 126 of the region R3 can be enhanced. The first water stream S1 finally merges with the second water stream S2 and drops into the reservoir portion 116 also from behind.

  Also in the second embodiment, the overhanging inner circumferential surface 128 of the overhang portion 118 covering the inner wall surface 126 has a left-right symmetrical shape. For this reason, from the view of the user, the left-right asymmetry (distortion) of the inner wall surface 126 of the toilet bowl 110 can be shielded by the left-right symmetrical overhang part 118.

  Also in the second embodiment, it is possible to enhance the discharge power by adjusting the amount of water, the water flow, the first curvature, and the second curvature, and it is also possible to enhance the discharge power rather than the cleaning power. It is.

  Conventionally, the water flow passage 120 of the swirling water flow has been defined by the shape of the shelf formed on the inner wall surface 126 and the adjustment of the position, number, amount of water, water flow, and direction of water discharge. However, such a design method has a high degree of difficulty for pursuing an optimal design. In addition, if a shelf portion having a complicated shape is added on the inner wall surface 126 of the toilet bowl portion 110, there may be a place where it is difficult to sufficiently wash.

  In the present embodiment, the common sense in design that the inner wall surface 126 of the toilet bowl 110 is formed symmetrically is discarded. The first water flow S1 is boldly controlled by defining the water passage 120 by distorting the shape of the inner wall surface 126, so to speak, the basic shape of the toilet bowl portion 110 itself. In addition, structures such as a shelf may be added to finely adjust the water passage 120.

  The present invention has been described above based on several embodiments. It is understood by those skilled in the art that these embodiments are exemplifications, and that various modifications and alterations are possible within the scope of the present invention, and such variations and modifications are also within the scope of the present invention. It is about to be Accordingly, the descriptions and drawings herein are to be considered as illustrative and not restrictive.

  S1 1st water flow, S2 2nd water flow, 100 flush toilet bowl, 102 toilet bowl body, 104 toilet seat, 106 water supply tank, 108 functional parts, 110 toilet bowl section, 112 drainage pipe, 114 outer wall, 116 reservoir water section, 118 overhang Part, 120 water passage, 120a first water passage, 120b second water passage, 122 first water outlet, 124 second water outlet, 126 inner wall surface, 126a side wall surface, 126b shelf surface, 128 overhang inner circumferential surface, 130 Soil receiving surface.

Claims (3)

It has a bowl with a spout formed laterally.
The water discharge port discharges water toward a water flow path which turns in the circumferential direction the inner wall of the toilet bowl,
On the inner wall surface of the front end side half of the toilet bowl, the first water channel on the side where the water discharge port is formed and the second water channel on the non-forming side extend in the front-rear direction of the toilet bowl Formed so as to be asymmetrical to the central axis,
The first curvature of the first water passage is rather smaller than the second curvature in the second water passage,
The flush toilet according to claim 1 , wherein the position of maximum curvature in the second water flow passage is provided at a position separated downstream from the position overlapping the central axis in plan view . It has a bowl with a spout formed laterally.
The water discharge port discharges water toward a water flow path which turns in the circumferential direction the inner wall of the toilet bowl,
On the inner wall surface of the front end side half of the toilet bowl, the first water channel on the side where the water discharge port is formed and the second water channel on the non-forming side extend in the front-rear direction of the toilet bowl Formed so as to be asymmetrical to the central axis,
The first curvature in the first water flow passage is larger than the second curvature in the second water flow passage,
Wherein the first water passage, said in a horizontal section through the upper and the spout of the first water passage, the flights pot portion of the projecting portion and the projecting inwardly relative to the side wall surface of the first water passage The flush toilet according to claim 1, wherein the water discharge port is connected to the second water passage without forming a recess recessed outward of the toilet bowl with respect to a side wall surface of the first water passage. An overhang is formed at the upper end of the toilet bowl to cover the water flow passage in plan view by projecting inward.
The flush toilet according to claim 1 or 2, wherein the inner circumference of the overhang is symmetrical with respect to a central axis extending in the front-rear direction of the toilet bowl.

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